+/.doctrees
/config-devices.*
/config-all-devices.*
/config-all-disas.*
- ${SRC_DIR}/scripts/travis/coverage-summary.sh
+ # We manually include builds which we disable "make check" for
+ - env:
+ - CONFIG="--without-default-devices"
+ - TEST_CMD=""
+
+
# We manually include builds which we disable "make check" for
- env:
- CONFIG="--enable-debug --enable-tcg-interpreter"
--- /dev/null
+# These are "proxy" symbols used to pass config-host.mak values
+# down to Kconfig. See also MINIKCONF_ARGS in the Makefile:
+# these two need to be kept in sync.
+
+config KVM
+ bool
+
+config LINUX
+ bool
+
+config OPENGL
+ bool
+
+config X11
+ bool
+
+config SPICE
+ bool
+
+config IVSHMEM
+ bool
+
+config TPM
+ bool
+
+config VHOST_USER
+ bool
+
+config XEN
+ bool
+
+config VIRTFS
+ bool
M: Daniel P. Berrange <berrange@redhat.com>
S: Odd Fixes
F: scripts/git-submodule.sh
+
+Sphinx documentation configuration and build machinery
+M: Peter Maydell <peter.maydell@linaro.org>
+S: Maintained
+F: docs/conf.py
+F: docs/*/conf.py
include $(SRC_PATH)/rules.mak
+# Create QEMU_PKGVERSION and FULL_VERSION strings
+# If PKGVERSION is set, use that; otherwise get version and -dirty status from git
+QEMU_PKGVERSION := $(if $(PKGVERSION),$(PKGVERSION),$(shell \
+ cd $(SRC_PATH); \
+ if test -e .git; then \
+ git describe --match 'v*' 2>/dev/null | tr -d '\n'; \
+ if ! git diff-index --quiet HEAD &>/dev/null; then \
+ echo "-dirty"; \
+ fi; \
+ fi))
+
+# Either "version (pkgversion)", or just "version" if pkgversion not set
+FULL_VERSION := $(if $(QEMU_PKGVERSION),$(VERSION) ($(QEMU_PKGVERSION)),$(VERSION))
+
GENERATED_FILES = qemu-version.h config-host.h qemu-options.def
GENERATED_QAPI_FILES = qapi/qapi-builtin-types.h qapi/qapi-builtin-types.c
endif
SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory --quiet) BUILD_DIR=$(BUILD_DIR)
-SUBDIR_DEVICES_MAK=$(patsubst %, %/config-devices.mak, $(TARGET_DIRS))
-SUBDIR_DEVICES_MAK_DEP=$(patsubst %, %-config-devices.mak.d, $(TARGET_DIRS))
+SUBDIR_DEVICES_MAK=$(patsubst %, %/config-devices.mak, $(filter %-softmmu, $(TARGET_DIRS)))
+SUBDIR_DEVICES_MAK_DEP=$(patsubst %, %.d, $(SUBDIR_DEVICES_MAK))
ifeq ($(SUBDIR_DEVICES_MAK),)
config-all-devices.mak:
-include $(SUBDIR_DEVICES_MAK_DEP)
-%/config-devices.mak: default-configs/%.mak $(SRC_PATH)/scripts/make_device_config.sh
- $(call quiet-command, \
- $(SHELL) $(SRC_PATH)/scripts/make_device_config.sh $< $*-config-devices.mak.d $@ > $@.tmp,"GEN","$@.tmp")
+# This has to be kept in sync with Kconfig.host.
+MINIKCONF_ARGS = \
+ $(CONFIG_MINIKCONF_MODE) \
+ $@ $*-config.devices.mak.d $< $(MINIKCONF_INPUTS) \
+ CONFIG_KVM=$(CONFIG_KVM) \
+ CONFIG_SPICE=$(CONFIG_SPICE) \
+ CONFIG_IVSHMEM=$(CONFIG_IVSHMEM) \
+ CONFIG_TPM=$(CONFIG_TPM) \
+ CONFIG_XEN=$(CONFIG_XEN) \
+ CONFIG_OPENGL=$(CONFIG_OPENGL) \
+ CONFIG_X11=$(CONFIG_X11) \
+ CONFIG_VHOST_USER=$(CONFIG_VHOST_USER) \
+ CONFIG_VIRTFS=$(CONFIG_VIRTFS) \
+ CONFIG_LINUX=$(CONFIG_LINUX)
+
+MINIKCONF_INPUTS = $(SRC_PATH)/Kconfig.host $(SRC_PATH)/hw/Kconfig
+MINIKCONF = $(PYTHON) $(SRC_PATH)/scripts/minikconf.py \
+
+$(SUBDIR_DEVICES_MAK): %/config-devices.mak: default-configs/%.mak $(MINIKCONF_INPUTS) $(BUILD_DIR)/config-host.mak
+ $(call quiet-command, $(MINIKCONF) $(MINIKCONF_ARGS) > $@.tmp, "GEN", "$@.tmp")
$(call quiet-command, if test -f $@; then \
if cmp -s $@.old $@; then \
mv $@.tmp $@; \
ui-obj-m \
audio-obj-y \
audio-obj-m \
- trace-obj-y \
- slirp-obj-y)
+ trace-obj-y)
include $(SRC_PATH)/tests/Makefile.include
-all: $(DOCS) $(TOOLS) $(HELPERS-y) recurse-all modules
+all: $(DOCS) $(if $(BUILD_DOCS),sphinxdocs) $(TOOLS) $(HELPERS-y) recurse-all modules
qemu-version.h: FORCE
$(call quiet-command, \
- (cd $(SRC_PATH); \
- if test -n "$(PKGVERSION)"; then \
- pkgvers="$(PKGVERSION)"; \
- else \
- if test -d .git; then \
- pkgvers=$$(git describe --match 'v*' 2>/dev/null | tr -d '\n');\
- if ! git diff-index --quiet HEAD &>/dev/null; then \
- pkgvers="$${pkgvers}-dirty"; \
- fi; \
- fi; \
- fi; \
- printf "#define QEMU_PKGVERSION \"$${pkgvers}\"\n"; \
- if test -n "$${pkgvers}"; then \
- printf '#define QEMU_FULL_VERSION QEMU_VERSION " (" QEMU_PKGVERSION ")"\n'; \
- else \
- printf '#define QEMU_FULL_VERSION QEMU_VERSION\n'; \
- fi; \
+ (printf '#define QEMU_PKGVERSION "$(QEMU_PKGVERSION)"\n'; \
+ printf '#define QEMU_FULL_VERSION "$(FULL_VERSION)"\n'; \
) > $@.tmp)
$(call quiet-command, if ! cmp -s $@ $@.tmp; then \
mv $@.tmp $@; \
subdir-capstone: .git-submodule-status
$(call quiet-command,$(MAKE) -C $(SRC_PATH)/capstone CAPSTONE_SHARED=no BUILDDIR="$(BUILD_DIR)/capstone" CC="$(CC)" AR="$(AR)" LD="$(LD)" RANLIB="$(RANLIB)" CFLAGS="$(CAP_CFLAGS)" $(SUBDIR_MAKEFLAGS) $(BUILD_DIR)/capstone/$(LIBCAPSTONE))
-$(SUBDIR_RULES): libqemuutil.a $(common-obj-y) $(chardev-obj-y) $(slirp-obj-y) \
+subdir-slirp: .git-submodule-status
+ $(call quiet-command,$(MAKE) -C $(SRC_PATH)/slirp BUILD_DIR="$(BUILD_DIR)/slirp" CC="$(CC)" AR="$(AR)" LD="$(LD)" RANLIB="$(RANLIB)" CFLAGS="$(QEMU_CFLAGS)")
+
+$(SUBDIR_RULES): libqemuutil.a $(common-obj-y) $(chardev-obj-y) \
$(qom-obj-y) $(crypto-aes-obj-$(CONFIG_USER_ONLY))
ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
qemu-%.tar.bz2:
$(SRC_PATH)/scripts/make-release "$(SRC_PATH)" "$(patsubst qemu-%.tar.bz2,%,$@)"
+# Note that these commands assume that there are no HTML files in
+# the docs subdir in the source tree! If there are then this will
+# blow them away for an in-source-tree 'make clean'.
+define clean-manual =
+rm -rf docs/$1/_static
+rm -f docs/$1/objects.inv docs/$1/searchindex.js docs/$1/*.html
+endef
+
distclean: clean
rm -f config-host.mak config-host.h* config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi qemu-monitor.texi qemu-monitor-info.texi
rm -f config-all-devices.mak config-all-disas.mak config.status
rm -f docs/interop/qemu-qmp-ref.html docs/interop/qemu-ga-ref.html
rm -f docs/qemu-block-drivers.7
rm -f docs/qemu-cpu-models.7
+ rm -f .doctrees
+ $(call clean-manual,devel)
+ $(call clean-manual,interop)
for d in $(TARGET_DIRS); do \
rm -rf $$d || exit 1 ; \
done
BLOBS=
endif
-install-doc: $(DOCS)
+define install-manual =
+for d in $$(cd docs && find $1 -type d); do $(INSTALL_DIR) "$(DESTDIR)$(qemu_docdir)/$$d"; done
+for f in $$(cd docs && find $1 -type f); do $(INSTALL_DATA) "docs/$$f" "$(DESTDIR)$(qemu_docdir)/$$f"; done
+endef
+
+# Note that we deliberately do not install the "devel" manual: it is
+# for QEMU developers, and not interesting to our users.
+.PHONY: install-sphinxdocs
+install-sphinxdocs: sphinxdocs
+ $(call install-manual,interop)
+
+install-doc: $(DOCS) install-sphinxdocs
$(INSTALL_DIR) "$(DESTDIR)$(qemu_docdir)"
$(INSTALL_DATA) qemu-doc.html "$(DESTDIR)$(qemu_docdir)"
$(INSTALL_DATA) qemu-doc.txt "$(DESTDIR)$(qemu_docdir)"
%.pdf: %.texi docs/version.texi
$(call quiet-command,texi2pdf $(TEXI2PDFFLAGS) $< -o $@,"GEN","$@")
+# Sphinx builds all its documentation at once in one invocation
+# and handles "don't rebuild things unless necessary" itself.
+# The '.doctrees' files are cached information to speed this up.
+.PHONY: sphinxdocs
+sphinxdocs: docs/devel/index.html docs/interop/index.html
+
+# Canned command to build a single manual
+build-manual = $(call quiet-command,sphinx-build $(if $(V),,-q) -b html -D version=$(VERSION) -D release="$(FULL_VERSION)" -d .doctrees/$1 $(SRC_PATH)/docs/$1 docs/$1 ,"SPHINX","docs/$1")
+# We assume all RST files in the manual's directory are used in it
+manual-deps = $(wildcard $(SRC_PATH)/docs/$1/*.rst) $(SRC_PATH)/docs/$1/conf.py $(SRC_PATH)/docs/conf.py
+
+docs/devel/index.html: $(call manual-deps,devel)
+ $(call build-manual,devel)
+
+docs/interop/index.html: $(call manual-deps,interop)
+ $(call build-manual,interop)
+
qemu-options.texi: $(SRC_PATH)/qemu-options.hx $(SRC_PATH)/scripts/hxtool
$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -t < $< > $@,"GEN","$@")
docs/qemu-cpu-models.7: docs/qemu-cpu-models.texi
scripts/qemu-trace-stap.1: scripts/qemu-trace-stap.texi
-html: qemu-doc.html docs/interop/qemu-qmp-ref.html docs/interop/qemu-ga-ref.html
+html: qemu-doc.html docs/interop/qemu-qmp-ref.html docs/interop/qemu-ga-ref.html sphinxdocs
info: qemu-doc.info docs/interop/qemu-qmp-ref.info docs/interop/qemu-ga-ref.info
pdf: qemu-doc.pdf docs/interop/qemu-qmp-ref.pdf docs/interop/qemu-ga-ref.pdf
txt: qemu-doc.txt docs/interop/qemu-qmp-ref.txt docs/interop/qemu-ga-ref.txt
util-obj-y = util/ qobject/ qapi/
chardev-obj-y = chardev/
-slirp-obj-$(CONFIG_SLIRP) = slirp/
#######################################################################
# authz-obj-y is code used by both qemu system emulation and qemu-img
include ../config-host.mak
include config-target.mak
-include config-devices.mak
include $(SRC_PATH)/rules.mak
+ifdef CONFIG_SOFTMMU
+include config-devices.mak
+endif
+
$(call set-vpath, $(SRC_PATH):$(BUILD_DIR))
ifdef CONFIG_LINUX
QEMU_CFLAGS += -I../linux-headers
block-obj-y :=
common-obj-y :=
chardev-obj-y :=
-slirp-obj-y :=
include $(SRC_PATH)/Makefile.objs
dummy := $(call unnest-vars,,target-obj-y)
target-obj-y-save := $(target-obj-y)
qom-obj-y \
io-obj-y \
common-obj-y \
- common-obj-m \
- slirp-obj-y)
+ common-obj-m)
target-obj-y := $(target-obj-y-save)
all-obj-y += $(common-obj-y)
all-obj-y += $(target-obj-y)
all-obj-$(CONFIG_USER_ONLY) += $(crypto-aes-obj-y)
all-obj-$(CONFIG_SOFTMMU) += $(crypto-obj-y)
all-obj-$(CONFIG_SOFTMMU) += $(io-obj-y)
-all-obj-$(CONFIG_SOFTMMU) += $(slirp-obj-y)
+ifdef CONFIG_SOFTMMU
$(QEMU_PROG_BUILD): config-devices.mak
+endif
COMMON_LDADDS = ../libqemuutil.a
sysconfdir="\${prefix}/etc"
local_statedir="\${prefix}/var"
confsuffix="/qemu"
-slirp="yes"
+slirp=""
oss_lib=""
bsd="no"
linux="no"
auth_pam=""
vte=""
virglrenderer=""
-tpm="yes"
+tpm=""
libssh2=""
live_block_migration="yes"
numa=""
docker="no"
debug_mutex="no"
libpmem=""
-libudev="no"
+default_devices="yes"
# cross compilers defaults, can be overridden with --cross-cc-ARCH
cross_cc_aarch64="aarch64-linux-gnu-gcc"
;;
--with-trace-file=*) trace_file="$optarg"
;;
+ --with-default-devices) default_devices="yes"
+ ;;
+ --without-default-devices) default_devices="no"
+ ;;
--enable-gprof) gprof="yes"
;;
--enable-gcov) gcov="yes"
;;
--disable-slirp) slirp="no"
;;
+ --enable-slirp=git) slirp="git"
+ ;;
+ --enable-slirp=system) slirp="system"
+ ;;
--disable-vde) vde="no"
;;
--enable-vde) vde="yes"
fi
##########################################
-# TPM passthrough is only on x86 Linux
+# TPM emulation is only on POSIX
-if test "$targetos" = Linux && { test "$cpu" = i386 || test "$cpu" = x86_64; }; then
- tpm_passthrough=$tpm
-else
- tpm_passthrough=no
+if test "$tpm" = ""; then
+ if test "$mingw32" = "yes"; then
+ tpm=no
+ else
+ tpm=yes
+ fi
+elif test "$tpm" = "yes"; then
+ if test "$mingw32" = "yes" ; then
+ error_exit "TPM emulation only available on POSIX systems"
+ fi
fi
-# TPM emulator is for all posix systems
-if test "$mingw32" != "yes"; then
- tpm_emulator=$tpm
-else
- tpm_emulator=no
-fi
##########################################
# attr probe
syncfs=yes
fi
+# Check we have a new enough version of sphinx-build
+has_sphinx_build() {
+ # This is a bit awkward but works: create a trivial document and
+ # try to run it with our configuration file (which enforces a
+ # version requirement). This will fail if either
+ # sphinx-build doesn't exist at all or if it is too old.
+ mkdir -p "$TMPDIR1/sphinx"
+ touch "$TMPDIR1/sphinx/index.rst"
+ sphinx-build -c "$source_path/docs" -b html "$TMPDIR1/sphinx" "$TMPDIR1/sphinx/out" >/dev/null 2>&1
+}
+
# Check if tools are available to build documentation.
if test "$docs" != "no" ; then
- if has makeinfo && has pod2man; then
+ if has makeinfo && has pod2man && has_sphinx_build; then
docs=yes
else
if test "$docs" = "yes" ; then
- feature_not_found "docs" "Install texinfo and Perl/perl-podlators"
+ feature_not_found "docs" "Install texinfo, Perl/perl-podlators and python-sphinx"
fi
docs=no
fi
fi
fi
+##########################################
+# check for slirp
+
+case "$slirp" in
+ "" | yes)
+ if $pkg_config slirp; then
+ slirp=system
+ elif test -e "${source_path}/.git" && test $git_update = 'yes' ; then
+ slirp=git
+ elif test -e "${source_path}/slirp/Makefile" ; then
+ slirp=internal
+ elif test -z "$slirp" ; then
+ slirp=no
+ else
+ feature_not_found "slirp" "Install slirp devel or git submodule"
+ fi
+ ;;
+
+ system)
+ if ! $pkg_config slirp; then
+ feature_not_found "slirp" "Install slirp devel"
+ fi
+ ;;
+esac
+
+case "$slirp" in
+ git | internal)
+ if test "$slirp" = git; then
+ git_submodules="${git_submodules} slirp"
+ fi
+ mkdir -p slirp
+ slirp_cflags="-I\$(SRC_PATH)/slirp/src -I\$(BUILD_DIR)/slirp/src"
+ slirp_libs="-L\$(BUILD_DIR)/slirp -lslirp"
+ ;;
+
+ system)
+ slirp_version=$($pkg_config --modversion slirp 2>/dev/null)
+ slirp_cflags=$($pkg_config --cflags slirp 2>/dev/null)
+ slirp_libs=$($pkg_config --libs slirp 2>/dev/null)
+ ;;
+
+ no)
+ ;;
+ *)
+ error_exit "Unknown state for slirp: $slirp"
+ ;;
+esac
+
+
##########################################
# End of CC checks
# After here, no more $cc or $ld runs
echo "make $make"
echo "install $install"
echo "python $python ($python_version)"
-if test "$slirp" = "yes" ; then
+echo "slirp support $slirp $(echo_version $slirp $slirp_version)"
+if test "$slirp" != "no" ; then
echo "smbd $smbd"
fi
echo "module support $modules"
echo "docker $docker"
echo "libpmem support $libpmem"
echo "libudev $libudev"
+echo "default devices $default_devices"
if test "$supported_cpu" = "no"; then
echo
echo "ARCH=$ARCH" >> $config_host_mak
+if test "$default_devices" = "yes" ; then
+ echo "CONFIG_MINIKCONF_MODE=--defconfig" >> $config_host_mak
+else
+ echo "CONFIG_MINIKCONF_MODE=--allnoconfig" >> $config_host_mak
+fi
if test "$debug_tcg" = "yes" ; then
echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
fi
if test "$profiler" = "yes" ; then
echo "CONFIG_PROFILER=y" >> $config_host_mak
fi
-if test "$slirp" = "yes" ; then
+if test "$slirp" != "no"; then
echo "CONFIG_SLIRP=y" >> $config_host_mak
echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
+ echo "SLIRP_CFLAGS=$slirp_cflags" >> $config_host_mak
+ echo "SLIRP_LIBS=$slirp_libs" >> $config_host_mak
+fi
+if [ "$slirp" = "git" -o "$slirp" = "internal" ]; then
+ echo "config-host.h: subdir-slirp" >> $config_host_mak
fi
if test "$vde" = "yes" ; then
echo "CONFIG_VDE=y" >> $config_host_mak
if supported_xen_target $target; then
echo "CONFIG_XEN=y" >> $config_target_mak
+ echo "$target/config-devices.mak: CONFIG_XEN=y" >> $config_host_mak
if test "$xen_pci_passthrough" = yes; then
echo "CONFIG_XEN_PCI_PASSTHROUGH=y" >> "$config_target_mak"
fi
+else
+ echo "$target/config-devices.mak: CONFIG_XEN=n" >> $config_host_mak
fi
if supported_kvm_target $target; then
echo "CONFIG_KVM=y" >> $config_target_mak
+ echo "$target/config-devices.mak: CONFIG_KVM=y" >> $config_host_mak
+else
+ echo "$target/config-devices.mak: CONFIG_KVM=n" >> $config_host_mak
fi
if supported_hax_target $target; then
echo "CONFIG_HAX=y" >> $config_target_mak
LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
LINKS="$LINKS tests/acceptance tests/data"
LINKS="$LINKS tests/qemu-iotests/check"
+LINKS="$LINKS python"
for bios_file in \
$source_path/pc-bios/*.bin \
$source_path/pc-bios/*.lid \
# Default configuration for alpha-softmmu
-include pci.mak
-include usb.mak
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_I82374=y
-CONFIG_I8254=y
-CONFIG_I8257=y
-CONFIG_PARALLEL=y
-CONFIG_FDC=y
-CONFIG_PCKBD=y
-CONFIG_VGA_CIRRUS=y
-CONFIG_IDE_CORE=y
-CONFIG_IDE_QDEV=y
-CONFIG_VMWARE_VGA=y
-CONFIG_IDE_CMD646=y
-CONFIG_I8259=y
-CONFIG_MC146818RTC=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_SMC37C669=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+#CONFIG_TEST_DEVICES=n
+
+# Boards:
+#
CONFIG_DP264=y
# Default configuration for arm-softmmu
-include pci.mak
-include usb.mak
+CONFIG_PCI=y
+CONFIG_PCI_DEVICES=y
CONFIG_VGA=y
CONFIG_NAND=y
CONFIG_ECC=y
CONFIG_SERIAL=y
-CONFIG_PTIMER=y
-CONFIG_SD=y
CONFIG_MAX7310=y
CONFIG_WM8750=y
CONFIG_TWL92230=y
CONFIG_SII9022=y
CONFIG_ADS7846=y
CONFIG_MAX111X=y
-CONFIG_SSI=y
CONFIG_SSI_SD=y
CONFIG_SSI_M25P80=y
CONFIG_LAN9118=y
CONFIG_PFLASH_CFI01=y
CONFIG_PFLASH_CFI02=y
CONFIG_MICRODRIVE=y
-CONFIG_USB=y
CONFIG_USB_MUSB=y
CONFIG_USB_EHCI_SYSBUS=y
CONFIG_PLATFORM_BUS=y
CONFIG_NETDUINO2=y
CONFIG_ARM_GIC=y
-CONFIG_ARM_GIC_KVM=$(CONFIG_KVM)
CONFIG_ARM_TIMER=y
CONFIG_ARM_MPTIMER=y
CONFIG_A9_GTIMER=y
CONFIG_XGMAC=y
CONFIG_EXYNOS4=y
CONFIG_PXA2XX=y
-CONFIG_I2C=y
CONFIG_BITBANG_I2C=y
CONFIG_FRAMEBUFFER=y
CONFIG_XILINX_SPIPS=y
CONFIG_VERSATILE_PCI=y
CONFIG_VERSATILE_I2C=y
+CONFIG_PCI_EXPRESS=y
CONFIG_PCI_EXPRESS_GENERIC_BRIDGE=y
-CONFIG_VFIO=$(CONFIG_LINUX)
-CONFIG_VFIO_PLATFORM=y
-CONFIG_VFIO_XGMAC=y
-CONFIG_VFIO_AMD_XGBE=y
CONFIG_SDHCI=y
CONFIG_INTEGRATOR=y
CONFIG_STRONGARM=y
CONFIG_HIGHBANK=y
CONFIG_MUSICPAL=y
+
+# for realview and versatilepb
+CONFIG_LSI_SCSI_PCI=y
# Default configuration for cris-softmmu
-CONFIG_ETRAXFS=y
-CONFIG_NAND=y
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI02=y
+# Boards:
+#
CONFIG_AXIS=y
-include pci.mak
-include usb.mak
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_ISA_BUS=y
-CONFIG_I8259=y
-CONFIG_E1000_PCI=y
-CONFIG_IDE_ISA=y
-CONFIG_IDE_CMD646=y
-# CONFIG_IDE_MMIO=y
-CONFIG_VIRTIO_VGA=y
-CONFIG_MC146818RTC=y
+# Default configuration for hppa-softmmu
+
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+
+# Boards:
+#
CONFIG_DINO=y
+++ /dev/null
-CONFIG_HYPERV=$(CONFIG_KVM)
-CONFIG_HYPERV_TESTDEV=y
# Default configuration for i386-softmmu
-include pci.mak
-include sound.mak
-include usb.mak
-include hyperv.mak
-CONFIG_QXL=$(CONFIG_SPICE)
-CONFIG_VGA_ISA=y
-CONFIG_VGA_CIRRUS=y
-CONFIG_VMWARE_VGA=y
-CONFIG_VMXNET3_PCI=y
-CONFIG_VIRTIO_VGA=y
-CONFIG_VMMOUSE=y
-CONFIG_IPMI=y
-CONFIG_IPMI_LOCAL=y
-CONFIG_IPMI_EXTERN=y
-CONFIG_ISA_IPMI_KCS=y
-CONFIG_ISA_IPMI_BT=y
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_PARALLEL=y
-CONFIG_I8254=y
-CONFIG_PCSPK=y
-CONFIG_PCKBD=y
-CONFIG_FDC=y
-CONFIG_ACPI=y
-CONFIG_ACPI_X86=y
-CONFIG_ACPI_X86_ICH=y
-CONFIG_ACPI_MEMORY_HOTPLUG=y
-CONFIG_ACPI_CPU_HOTPLUG=y
-CONFIG_APM=y
-CONFIG_I8257=y
-CONFIG_IDE_ISA=y
-CONFIG_IDE_PIIX=y
-CONFIG_NE2000_ISA=y
-CONFIG_HPET=y
-CONFIG_APPLESMC=y
-CONFIG_I8259=y
-CONFIG_PFLASH_CFI01=y
-CONFIG_TPM_TIS=$(CONFIG_TPM)
-CONFIG_TPM_CRB=$(CONFIG_TPM)
-CONFIG_MC146818RTC=y
-CONFIG_PCI_PIIX=y
-CONFIG_WDT_IB700=y
-CONFIG_ISA_DEBUG=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_VMPORT=y
-CONFIG_SGA=y
-CONFIG_LPC_ICH9=y
-CONFIG_PCI_EXPRESS_Q35=y
-CONFIG_APIC=y
-CONFIG_IOAPIC=y
-CONFIG_PVPANIC=y
-CONFIG_MEM_DEVICE=y
-CONFIG_DIMM=y
-CONFIG_NVDIMM=y
-CONFIG_ACPI_NVDIMM=y
-CONFIG_PCIE_PORT=y
-CONFIG_XIO3130=y
-CONFIG_IOH3420=y
-CONFIG_I82801B11=y
-CONFIG_SMBIOS=y
-CONFIG_PXB=y
-CONFIG_ACPI_VMGENID=y
-CONFIG_ACPI_SMBUS=y
-CONFIG_SMBUS_EEPROM=y
-CONFIG_FW_CFG_DMA=y
-CONFIG_I2C=y
-CONFIG_SEV=$(CONFIG_KVM)
-CONFIG_VTD=y
-CONFIG_AMD_IOMMU=y
-CONFIG_PAM=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_AMD_IOMMU=n
+#CONFIG_APPLESMC=n
+#CONFIG_FDC=n
+#CONFIG_HPET=n
+#CONFIG_HYPERV=n
+#CONFIG_ISA_DEBUG=n
+#CONFIG_ISA_IPMI_BT=n
+#CONFIG_ISA_IPMI_KCS=n
+#CONFIG_PCI_DEVICES=n
+#CONFIG_PVPANIC=n
+#CONFIG_QXL=n
+#CONFIG_SEV=n
+#CONFIG_SGA=n
+#CONFIG_TEST_DEVICES=n
+#CONFIG_TPM_CRB=n
+#CONFIG_TPM_TIS=n
+#CONFIG_VTD=n
+
+# Boards:
+#
+CONFIG_ISAPC=y
CONFIG_I440FX=y
CONFIG_Q35=y
# Default configuration for lm32-softmmu
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_MILKYMIST_TMU2=n # disabling it actually causes compile-time failures
+
+# Boards:
+#
CONFIG_LM32=y
CONFIG_MILKYMIST=y
-CONFIG_MILKYMIST_TMU2=$(call land,$(CONFIG_X11),$(CONFIG_OPENGL))
-CONFIG_FRAMEBUFFER=y
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI01=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_SD=y
# Default configuration for m68k-softmmu
-CONFIG_COLDFIRE=y
-CONFIG_PTIMER=y
+# Boards:
+#
CONFIG_AN5206=y
CONFIG_MCF5208=y
# Default configuration for microblaze-softmmu
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI01=y
-CONFIG_SERIAL=y
-CONFIG_XILINX=y
-CONFIG_XILINX_AXI=y
-CONFIG_XILINX_SPI=y
-CONFIG_XILINX_ETHLITE=y
-CONFIG_SSI=y
-CONFIG_SSI_M25P80=y
-CONFIG_XLNX_ZYNQMP=y
+# Boards:
+#
CONFIG_PETALOGIX_S3ADSP1800=y
CONFIG_PETALOGIX_ML605=y
CONFIG_XLNX_ZYNQMP_PMU=y
# Common mips*-softmmu CONFIG defines
-include pci.mak
-include sound.mak
-include usb.mak
+CONFIG_ISA_BUS=y
+CONFIG_PCI=y
+CONFIG_PCI_DEVICES=y
CONFIG_ESP=y
-CONFIG_SCSI=y
CONFIG_VGA_ISA=y
CONFIG_VGA_ISA_MM=y
CONFIG_VGA_CIRRUS=y
CONFIG_PFLASH_CFI01=y
CONFIG_I8259=y
CONFIG_MC146818RTC=y
-CONFIG_ISA_TESTDEV=y
CONFIG_EMPTY_SLOT=y
CONFIG_MIPS_CPS=y
CONFIG_MIPS_ITU=y
-CONFIG_I2C=y
CONFIG_R4K=y
CONFIG_MALTA=y
CONFIG_MIPSSIM=y
CONFIG_ACPI_SMBUS=y
CONFIG_SMBUS_EEPROM=y
+CONFIG_TEST_DEVICES=y
CONFIG_G364FB=y
CONFIG_JAZZ_LED=y
CONFIG_VT82C686=y
+CONFIG_AHCI=y
CONFIG_MIPS_BOSTON=y
CONFIG_FITLOADER=y
+CONFIG_PCI_EXPRESS=y
CONFIG_PCI_EXPRESS_XILINX=y
# Default configuration for moxie-softmmu
-CONFIG_ISA_BUS=y
-CONFIG_MC146818RTC=y
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_VGA=y
+# Boards:
+#
CONFIG_MOXIESIM=y
# Default configuration for nios2-softmmu
-CONFIG_NIOS2=y
-CONFIG_SERIAL=y
-CONFIG_PTIMER=y
-CONFIG_ALTERA_TIMER=y
+# Boards:
+#
CONFIG_NIOS2_10M50=y
# Default configuration for or1k-softmmu
-CONFIG_SERIAL=y
-CONFIG_OPENCORES_ETH=y
-CONFIG_OMPIC=y
+# Boards:
+#
CONFIG_OR1K_SIM=y
+++ /dev/null
-CONFIG_PCI=y
-# For now, CONFIG_IDE_CORE requires ISA, so we enable it here
-CONFIG_ISA_BUS=y
-CONFIG_VIRTIO_PCI=y
-include virtio.mak
-CONFIG_USB_UHCI=y
-CONFIG_USB_OHCI=y
-CONFIG_USB_EHCI=y
-CONFIG_USB_XHCI=y
-CONFIG_USB_XHCI_NEC=y
-CONFIG_NE2000_PCI=y
-CONFIG_EEPRO100_PCI=y
-CONFIG_PCNET_PCI=y
-CONFIG_PCNET_COMMON=y
-CONFIG_AC97=y
-CONFIG_HDA=y
-CONFIG_ES1370=y
-CONFIG_SCSI=y
-CONFIG_LSI_SCSI_PCI=y
-CONFIG_VMW_PVSCSI_SCSI_PCI=y
-CONFIG_MEGASAS_SCSI_PCI=y
-CONFIG_MPTSAS_SCSI_PCI=y
-CONFIG_RTL8139_PCI=y
-CONFIG_E1000_PCI=y
-CONFIG_E1000E_PCI_EXPRESS=y
-CONFIG_IDE_CORE=y
-CONFIG_IDE_QDEV=y
-CONFIG_IDE_PCI=y
-CONFIG_AHCI=y
-CONFIG_ESP=y
-CONFIG_ESP_PCI=y
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_SERIAL_PCI=y
-CONFIG_CAN_BUS=y
-CONFIG_CAN_SJA1000=y
-CONFIG_CAN_PCI=y
-CONFIG_IPACK=y
-CONFIG_WDT_IB6300ESB=y
-CONFIG_PCI_TESTDEV=y
-CONFIG_NVME_PCI=y
-CONFIG_SD=y
-CONFIG_SDHCI=y
-CONFIG_EDU=y
-CONFIG_VGA=y
-CONFIG_VGA_PCI=y
-CONFIG_BOCHS_DISPLAY=y
-CONFIG_IVSHMEM_DEVICE=$(CONFIG_IVSHMEM)
-CONFIG_ROCKER=y
-CONFIG_VFIO=$(CONFIG_LINUX)
-CONFIG_VFIO_PCI=y
# Default configuration for ppc-softmmu
-include pci.mak
-include sound.mak
-include usb.mak
-
# For embedded PPCs:
-CONFIG_PPC4XX=y
-CONFIG_M48T59=y
-CONFIG_SERIAL=y
-CONFIG_I8257=y
-CONFIG_OPENPIC=y
-CONFIG_PPCE500_PCI=y
-CONFIG_PFLASH_CFI01=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_PTIMER=y
-CONFIG_I8259=y
-CONFIG_XILINX=y
-CONFIG_XILINX_ETHLITE=y
CONFIG_E500=y
-CONFIG_OPENPIC_KVM=$(call land,$(CONFIG_E500),$(CONFIG_KVM))
-CONFIG_PLATFORM_BUS=y
-CONFIG_ETSEC=y
CONFIG_PPC405=y
CONFIG_PPC440=y
CONFIG_VIRTEX=y
# For Sam460ex
CONFIG_SAM460EX=y
-CONFIG_USB_EHCI_SYSBUS=y
-CONFIG_SM501=y
-CONFIG_DDC=y
-CONFIG_IDE_SII3112=y
-CONFIG_I2C=y
-CONFIG_AT24C=y
-CONFIG_BITBANG_I2C=y
-CONFIG_M41T80=y
-CONFIG_VGA_CIRRUS=y
-CONFIG_SMBUS_EEPROM=y
# For Macs
-CONFIG_ESCC=y
-CONFIG_MACIO=y
-CONFIG_MACIO_GPIO=y
-CONFIG_SUNGEM=y
-CONFIG_MOS6522=y
-CONFIG_CUDA=y
-CONFIG_ADB=y
-CONFIG_MAC_NVRAM=y
-CONFIG_MAC_DBDMA=y
-CONFIG_MAC_PMU=y
-CONFIG_HEATHROW_PIC=y
-CONFIG_GRACKLE_PCI=y
-CONFIG_UNIN_PCI=y
-CONFIG_DEC_PCI=y
-CONFIG_IDE_MACIO=y
CONFIG_MAC_OLDWORLD=y
CONFIG_MAC_NEWWORLD=y
# For PReP
CONFIG_PREP=y
-CONFIG_PREP_PCI=y
-CONFIG_SERIAL_ISA=y
-CONFIG_MC146818RTC=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_RS6000_MC=y
-CONFIG_PARALLEL=y
-CONFIG_I82374=y
-CONFIG_I82378=y
-CONFIG_I8254=y
-CONFIG_PCKBD=y
-CONFIG_FDC=y
-CONFIG_NE2000_ISA=y
-CONFIG_PC87312=y
-CONFIG_PCSPK=y
-CONFIG_IDE_ISA=y
-CONFIG_CS4231A=y
# For PowerNV
CONFIG_POWERNV=y
-CONFIG_IPMI=y
-CONFIG_IPMI_LOCAL=y
-CONFIG_IPMI_EXTERN=y
-CONFIG_ISA_IPMI_BT=y
# For pSeries
CONFIG_PSERIES=y
-CONFIG_VIRTIO_VGA=y
-CONFIG_XICS=$(CONFIG_PSERIES)
-CONFIG_XICS_SPAPR=$(CONFIG_PSERIES)
-CONFIG_XICS_KVM=$(call land,$(CONFIG_PSERIES),$(CONFIG_KVM))
-CONFIG_XIVE=$(CONFIG_PSERIES)
-CONFIG_XIVE_SPAPR=$(CONFIG_PSERIES)
-CONFIG_MEM_DEVICE=y
-CONFIG_DIMM=y
-CONFIG_SPAPR_RNG=y
-# Default configuration for riscv-softmmu
+# Default configuration for riscv32-softmmu
-include pci.mak
-include usb.mak
-
-CONFIG_SERIAL=y
-CONFIG_VIRTIO_MMIO=y
-
-CONFIG_CADENCE=y
-
-CONFIG_PCI_EXPRESS_GENERIC_BRIDGE=y
-
-CONFIG_VGA=y
-CONFIG_VGA_PCI=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+# Boards:
+#
CONFIG_SPIKE=y
-CONFIG_HART=y
CONFIG_SIFIVE_E=y
-CONFIG_SIFIVE=y
CONFIG_SIFIVE_U=y
CONFIG_RISCV_VIRT=y
-# Default configuration for riscv-softmmu
+# Default configuration for riscv64-softmmu
-include pci.mak
-include usb.mak
-
-CONFIG_SERIAL=y
-CONFIG_VIRTIO_MMIO=y
-
-CONFIG_CADENCE=y
-
-CONFIG_PCI_EXPRESS_GENERIC_BRIDGE=y
-
-CONFIG_VGA=y
-CONFIG_VGA_PCI=y
-
-CONFIG_SPIKE=y
-CONFIG_HART=y
-CONFIG_SIFIVE_E=y
-CONFIG_SIFIVE=y
-CONFIG_SIFIVE_U=y
-CONFIG_RISCV_VIRT=y
+include riscv32-softmmu.mak
-CONFIG_PCI=y
-CONFIG_VIRTIO_PCI=$(CONFIG_PCI)
-include virtio.mak
-CONFIG_SCLPCONSOLE=y
-CONFIG_TERMINAL3270=y
-CONFIG_S390_FLIC=y
-CONFIG_S390_FLIC_KVM=$(CONFIG_KVM)
-CONFIG_WDT_DIAG288=y
+# Default configuration for s390x-softmmu
+
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_TERMINAL3270=n
+#CONFIG_VFIO_AP=n
+#CONFIG_VFIO_CCW=n
+#CONFIG_VIRTIO_PCI=n
+#CONFIG_WDT_DIAG288=n
+
+# Boards:
+#
CONFIG_S390_CCW_VIRTIO=y
-CONFIG_VFIO=$(CONFIG_LINUX)
-CONFIG_VFIO_CCW=y
-CONFIG_VFIO_AP=y
-# Default configuration for sh4-softmmu
+# Default configuration for sh4eb-softmmu
-include pci.mak
-include usb.mak
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_SH4=y
-CONFIG_IDE_MMIO=y
-CONFIG_SM501=y
-CONFIG_I2C=y
-CONFIG_DDC=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_I82378=y
-CONFIG_I8259=y
-CONFIG_I8254=y
-CONFIG_PCSPK=y
-CONFIG_I82374=y
-CONFIG_I8257=y
-CONFIG_MC146818RTC=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+#CONFIG_TEST_DEVICES=n
+
+# Boards:
+#
CONFIG_R2D=y
CONFIG_SHIX=y
# Default configuration for sh4eb-softmmu
-include pci.mak
-include usb.mak
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_PTIMER=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_SH4=y
-CONFIG_IDE_MMIO=y
-CONFIG_SM501=y
-CONFIG_I2C=y
-CONFIG_DDC=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_I82378=y
-CONFIG_I8259=y
-CONFIG_I8254=y
-CONFIG_PCSPK=y
-CONFIG_I82374=y
-CONFIG_I8257=y
-CONFIG_MC146818RTC=y
-CONFIG_R2D=y
-CONFIG_SHIX=y
+include sh4-softmmu.mak
+++ /dev/null
-CONFIG_SB16=y
-CONFIG_ADLIB=y
-CONFIG_GUS=y
-CONFIG_CS4231A=y
# Default configuration for sparc-softmmu
-CONFIG_ISA_BUS=y
-CONFIG_ECC=y
-CONFIG_SCSI=y
-CONFIG_ESP=y
-CONFIG_ESCC=y
-CONFIG_M48T59=y
-CONFIG_PTIMER=y
-CONFIG_FDC=y
-CONFIG_EMPTY_SLOT=y
-CONFIG_PCNET_COMMON=y
-CONFIG_LANCE=y
-CONFIG_TCX=y
-CONFIG_CG3=y
-CONFIG_SLAVIO=y
-CONFIG_CS4231=y
-CONFIG_GRLIB=y
-CONFIG_STP2000=y
-CONFIG_ECCMEMCTL=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_TCX=n
+#CONFIG_CG3=n
+# Boards:
+#
CONFIG_SUN4M=y
CONFIG_LEON3=y
# Default configuration for sparc64-softmmu
-include pci.mak
-include usb.mak
-CONFIG_M48T59=y
-CONFIG_PTIMER=y
-CONFIG_SERIAL=y
-CONFIG_SERIAL_ISA=y
-CONFIG_PARALLEL=y
-CONFIG_PCKBD=y
-CONFIG_FDC=y
-CONFIG_IDE_ISA=y
-CONFIG_IDE_CMD646=y
-CONFIG_PCI_SABRE=y
-CONFIG_SIMBA=y
-CONFIG_SUNHME=y
-CONFIG_MC146818RTC=y
-CONFIG_ISA_TESTDEV=y
-CONFIG_SUN4V_RTC=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+#CONFIG_SUNHME=n
+#CONFIG_TEST_DEVICES=n
+
+# Boards:
+#
CONFIG_SUN4U=y
CONFIG_NIAGARA=y
# Default configuration for unicore32-softmmu
-CONFIG_ISA_BUS=y
+
+# Boards:
+#
CONFIG_PUV3=y
-CONFIG_PTIMER=y
-CONFIG_PCKBD=y
+++ /dev/null
-CONFIG_USB=y
-CONFIG_USB_TABLET_WACOM=y
-CONFIG_USB_STORAGE_BOT=y
-CONFIG_USB_STORAGE_UAS=y
-CONFIG_USB_STORAGE_MTP=y
-CONFIG_SCSI=y
-CONFIG_USB_SMARTCARD=y
-CONFIG_USB_AUDIO=y
-CONFIG_USB_SERIAL=y
-CONFIG_USB_NETWORK=y
-CONFIG_USB_BLUETOOTH=y
+++ /dev/null
-CONFIG_VHOST_USER_SCSI=$(CONFIG_VHOST_USER)
-CONFIG_VHOST_USER_BLK=$(CONFIG_VHOST_USER)
-CONFIG_VIRTIO=y
-CONFIG_VIRTIO_9P=$(CONFIG_VIRTFS)
-CONFIG_VIRTIO_BALLOON=y
-CONFIG_VIRTIO_BLK=y
-CONFIG_VIRTIO_CRYPTO=y
-CONFIG_VIRTIO_GPU=y
-CONFIG_VIRTIO_INPUT=y
-CONFIG_VIRTIO_NET=y
-CONFIG_VIRTIO_RNG=y
-CONFIG_SCSI=y
-CONFIG_VIRTIO_SCSI=y
-CONFIG_VIRTIO_SERIAL=y
-CONFIG_VIRTIO_INPUT_HOST=$(CONFIG_LINUX)
# Default configuration for Xtensa
-CONFIG_SERIAL=y
-CONFIG_OPENCORES_ETH=y
-CONFIG_PFLASH_CFI01=y
-
+# Boards:
+#
CONFIG_XTENSA_SIM=y
-CONFIG_XTENSA_FPGA=y
+CONFIG_XTENSA_XTFPGA=y
# Default configuration for Xtensa
-CONFIG_SERIAL=y
-CONFIG_OPENCORES_ETH=y
-CONFIG_PFLASH_CFI01=y
-
-CONFIG_XTENSA_SIM=y
-CONFIG_XTENSA_FPGA=y
+include xtensa-softmmu.mak
--- /dev/null
+# -*- coding: utf-8 -*-
+#
+# QEMU documentation build configuration file, created by
+# sphinx-quickstart on Thu Jan 31 16:40:14 2019.
+#
+# This config file can be used in one of two ways:
+# (1) as a common config file which is included by the conf.py
+# for each of QEMU's manuals: in this case sphinx-build is run multiple
+# times, once per subdirectory.
+# (2) as a top level conf file which will result in building all
+# the manuals into a single document: in this case sphinx-build is
+# run once, on the top-level docs directory.
+#
+# QEMU's makefiles take option (1), which allows us to install
+# only the ones the user cares about (in particular we don't want
+# to ship the 'devel' manual to end-users).
+# Third-party sites such as readthedocs.org will take option (2).
+#
+#
+# This file is execfile()d with the current directory set to its
+# containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import os
+import sys
+
+# The per-manual conf.py will set qemu_docdir for a single-manual build;
+# otherwise set it here if this is an entire-manual-set build.
+# This is always the absolute path of the docs/ directory in the source tree.
+try:
+ qemu_docdir
+except NameError:
+ qemu_docdir = os.path.abspath(".")
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use an absolute path starting from qemu_docdir.
+#
+# sys.path.insert(0, os.path.join(qemu_docdir, "my_subdir"))
+
+
+# -- General configuration ------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+# 1.3 is where the 'alabaster' theme was shipped with Sphinx.
+needs_sphinx = '1.3'
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = []
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+# source_suffix = ['.rst', '.md']
+source_suffix = '.rst'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'QEMU'
+copyright = u'2019, The QEMU Project Developers'
+author = u'The QEMU Project Developers'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+
+# Extract this information from the VERSION file, for the benefit of
+# standalone Sphinx runs as used by readthedocs.org. Builds run from
+# the Makefile will pass version and release on the sphinx-build
+# command line, which override this.
+try:
+ extracted_version = None
+ with open(os.path.join(qemu_docdir, '../VERSION')) as f:
+ extracted_version = f.readline().strip()
+except:
+ pass
+finally:
+ if extracted_version:
+ version = release = extracted_version
+ else:
+ version = release = "unknown version"
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = None
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This patterns also effect to html_static_path and html_extra_path
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# If true, `todo` and `todoList` produce output, else they produce nothing.
+todo_include_todos = False
+
+# Sphinx defaults to warning about use of :option: for options not defined
+# with "option::" in the document being processed. Turn that off.
+suppress_warnings = ["ref.option"]
+
+# -- Options for HTML output ----------------------------------------------
+
+# The theme to use for HTML and HTML Help pages. See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'alabaster'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further. For a list of options available for each theme, see the
+# documentation.
+# We initialize this to empty here, so the per-manual conf.py can just
+# add individual key/value entries.
+html_theme_options = {
+}
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+# QEMU doesn't yet have any static files, so comment this out so we don't
+# get a warning about a missing directory.
+# If we do ever add this then it would probably be better to call the
+# subdirectory sphinx_static, as the Linux kernel does.
+# html_static_path = ['_static']
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# This is required for the alabaster theme
+# refs: http://alabaster.readthedocs.io/en/latest/installation.html#sidebars
+html_sidebars = {
+ '**': [
+ 'about.html',
+ 'navigation.html',
+ 'searchbox.html',
+ ]
+}
+
+# Don't copy the rST source files to the HTML output directory,
+# and don't put links to the sources into the output HTML.
+html_copy_source = False
+
+# -- Options for HTMLHelp output ------------------------------------------
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'QEMUdoc'
+
+
+# -- Options for LaTeX output ---------------------------------------------
+
+latex_elements = {
+ # The paper size ('letterpaper' or 'a4paper').
+ #
+ # 'papersize': 'letterpaper',
+
+ # The font size ('10pt', '11pt' or '12pt').
+ #
+ # 'pointsize': '10pt',
+
+ # Additional stuff for the LaTeX preamble.
+ #
+ # 'preamble': '',
+
+ # Latex figure (float) alignment
+ #
+ # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+# author, documentclass [howto, manual, or own class]).
+latex_documents = [
+ (master_doc, 'QEMU.tex', u'QEMU Documentation',
+ u'The QEMU Project Developers', 'manual'),
+]
+
+
+# -- Options for manual page output ---------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+ (master_doc, 'qemu', u'QEMU Documentation',
+ [author], 1)
+]
+
+
+# -- Options for Texinfo output -------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+# dir menu entry, description, category)
+texinfo_documents = [
+ (master_doc, 'QEMU', u'QEMU Documentation',
+ author, 'QEMU', 'One line description of project.',
+ 'Miscellaneous'),
+]
+
+
+
hot-plugged (no "qom-path" member). From its output in step (3), we
can see that ``IvyBridge-IBRS-x86_64-cpu`` is present in socket 0,
while hot-plugging a CPU into socket 1 requires passing the listed
- properties to QMP ``device_add``:
+ properties to QMP ``device_add``::
(QEMU) device_add id=cpu-2 driver=IvyBridge-IBRS-x86_64-cpu socket-id=1 core-id=0 thread-id=0
{
contain a long list of config variable definitions. For example,
default-configs/x86_64-softmmu.mak has:
- include pci.mak
include sound.mak
include usb.mak
CONFIG_QXL=$(CONFIG_SPICE)
--- /dev/null
+# -*- coding: utf-8 -*-
+#
+# QEMU documentation build configuration file for the 'devel' manual.
+#
+# This includes the top level conf file and then makes any necessary tweaks.
+import sys
+import os
+
+qemu_docdir = os.path.abspath("..")
+parent_config = os.path.join(qemu_docdir, "conf.py")
+exec(compile(open(parent_config, "rb").read(), parent_config, 'exec'))
+
+# This slightly misuses the 'description', but is the best way to get
+# the manual title to appear in the sidebar.
+html_theme_options['description'] = u'Developer''s Guide'
--- /dev/null
+.. This is the top level page for the 'devel' manual.
+
+
+QEMU Developer's Guide
+======================
+
+This manual documents various parts of the internals of QEMU.
+You only need to read it if you are interested in reading or
+modifying QEMU's source code.
+
+Contents:
+
+.. toctree::
+ :maxdepth: 2
+
+ kconfig
+ loads-stores
+ memory
+ migration
+ stable-process
+ testing
+
--- /dev/null
+================
+QEMU and Kconfig
+================
+
+QEMU is a very versatile emulator; it can be built for a variety of
+targets, where each target can emulate various boards and at the same
+time different targets can share large amounts of code. For example,
+a POWER and an x86 board can run the same code to emulate a PCI network
+card, even though the boards use different PCI host bridges, and they
+can run the same code to emulate a SCSI disk while using different
+SCSI adapters. ARM, s390 and x86 boards can all present a virtio-blk
+disk to their guests, but with three different virtio guest interfaces.
+
+Each QEMU target enables a subset of the boards, devices and buses that
+are included in QEMU's source code. As a result, each QEMU executable
+only links a small subset of the files that form QEMU's source code;
+anything that is not needed to support a particular target is culled.
+
+QEMU uses a simple domain-specific language to describe the dependencies
+between components. This is useful for two reasons:
+
+* new targets and boards can be added without knowing in detail the
+ architecture of the hardware emulation subsystems. Boards only have
+ to list the components they need, and the compiled executable will
+ include all the required dependencies and all the devices that the
+ user can add to that board;
+
+* users can easily build reduced versions of QEMU that support only a subset
+ of boards or devices. For example, by default most targets will include
+ all emulated PCI devices that QEMU supports, but the build process is
+ configurable and it is easy to drop unnecessary (or otherwise unwanted)
+ code to make a leaner binary.
+
+This domain-specific language is based on the Kconfig language that
+originated in the Linux kernel, though it was heavily simplified and
+the handling of dependencies is stricter in QEMU.
+
+Unlike Linux, there is no user interface to edit the configuration, which
+is instead specified in per-target files under the ``default-configs/``
+directory of the QEMU source tree. This is because, unlike Linux,
+configuration and dependencies can be treated as a black box when building
+QEMU; the default configuration that QEMU ships with should be okay in
+almost all cases.
+
+The Kconfig language
+--------------------
+
+Kconfig defines configurable components in files named ``hw/*/Kconfig``.
+Note that configurable components are _not_ visible in C code as preprocessor
+symbols; they are only visible in the Makefile. Each configurable component
+defines a Makefile variable whose name starts with ``CONFIG_``.
+
+All elements have boolean (true/false) type; truth is written as ``y``, while
+falsehood is written ``n``. They are defined in a Kconfig
+stanza like the following::
+
+ config ARM_VIRT
+ bool
+ imply PCI_DEVICES
+ imply VFIO_AMD_XGBE
+ imply VFIO_XGMAC
+ select A15MPCORE
+ select ACPI
+ select ARM_SMMUV3
+
+The ``config`` keyword introduces a new configuration element. In the example
+above, Makefiles will have access to a variable named ``CONFIG_ARM_VIRT``,
+with value ``y`` or ``n`` (respectively for boolean true and false).
+
+Boolean expressions can be used within the language, whenever ``<expr>``
+is written in the remainder of this section. The ``&&``, ``||`` and
+``!`` operators respectively denote conjunction (AND), disjunction (OR)
+and negation (NOT).
+
+The ``bool`` data type declaration is optional, but it is suggested to
+include it for clarity and future-proofing. After ``bool`` the following
+directives can be included:
+
+**dependencies**: ``depends on <expr>``
+
+ This defines a dependency for this configurable element. Dependencies
+ evaluate an expression and force the value of the variable to false
+ if the expression is false.
+
+**reverse dependencies**: ``select <symbol> [if <expr>]``
+
+ While ``depends on`` can force a symbol to false, reverse dependencies can
+ be used to force another symbol to true. In the following example,
+ ``CONFIG_BAZ`` will be true whenever ``CONFIG_FOO`` is true::
+
+ config FOO
+ select BAZ
+
+ The optional expression will prevent ``select`` from having any effect
+ unless it is true.
+
+ Note that unlike Linux's Kconfig implementation, QEMU will detect
+ contradictions between ``depends on`` and ``select`` statements and prevent
+ you from building such a configuration.
+
+**default value**: ``default <value> [if <expr>]``
+
+ Default values are assigned to the config symbol if no other value was
+ set by the user via ``default-configs/*.mak`` files, and only if
+ ``select`` or ``depends on`` directives do not force the value to true
+ or false respectively. ``<value>`` can be ``y`` or ``n``; it cannot
+ be an arbitrary Boolean expression. However, a condition for applying
+ the default value can be added with ``if``.
+
+ A configuration element can have any number of default values (usually,
+ if more than one default is present, they will have different
+ conditions). If multiple default values satisfy their condition,
+ only the first defined one is active.
+
+**reverse default** (weak reverse dependency): ``imply <symbol> [if <expr>]``
+
+ This is similar to ``select`` as it applies a lower limit of ``y``
+ to another symbol. However, the lower limit is only a default
+ and the "implied" symbol's value may still be set to ``n`` from a
+ ``default-configs/*.mak`` files. The following two examples are
+ equivalent::
+
+ config FOO
+ bool
+ imply BAZ
+
+ config BAZ
+ bool
+ default y if FOO
+
+ The next section explains where to use ``imply`` or ``default y``.
+
+Guidelines for writing Kconfig files
+------------------------------------
+
+Configurable elements in QEMU fall under five broad groups. Each group
+declares its dependencies in different ways:
+
+**subsystems**, of which **buses** are a special case
+
+ Example::
+
+ config SCSI
+ bool
+
+ Subsystems always default to false (they have no ``default`` directive)
+ and are never visible in ``default-configs/*.mak`` files. It's
+ up to other symbols to ``select`` whatever subsystems they require.
+
+ They sometimes have ``select`` directives to bring in other required
+ subsystems or buses. For example, ``AUX`` (the DisplayPort auxiliary
+ channel "bus") selects ``I2C`` because it can act as an I2C master too.
+
+**devices**
+
+ Example::
+
+ config MEGASAS_SCSI_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SCSI
+
+ Devices are the most complex of the five. They can have a variety
+ of directives that cooperate so that a default configuration includes
+ all the devices that can be accessed from QEMU.
+
+ Devices *depend on* the bus that they lie on, for example a PCI
+ device would specify ``depends on PCI``. An MMIO device will likely
+ have no ``depends on`` directive. Devices also *select* the buses
+ that the device provides, for example a SCSI adapter would specify
+ ``select SCSI``. Finally, devices are usually ``default y`` if and
+ only if they have at least one ``depends on``; the default could be
+ conditional on a device group.
+
+ Devices also select any optional subsystem that they use; for example
+ a video card might specify ``select EDID`` if it needs to build EDID
+ information and publish it to the guest.
+
+**device groups**
+
+ Example::
+
+ config PCI_DEVICES
+ bool
+
+ Device groups provide a convenient mechanism to enable/disable many
+ devices in one go. This is useful when a set of devices is likely to
+ be enabled/disabled by several targets. Device groups usually need
+ no directive and are not used in the Makefile either; they only appear
+ as conditions for ``default y`` directives.
+
+ QEMU currently has two device groups, ``PCI_DEVICES`` and
+ ``TEST_DEVICES``. PCI devices usually have a ``default y if
+ PCI_DEVICES`` directive rather than just ``default y``. This lets
+ some boards (notably s390) easily support a subset of PCI devices,
+ for example only VFIO (passthrough) and virtio-pci devices.
+ ``TEST_DEVICES`` instead is used for devices that are rarely used on
+ production virtual machines, but provide useful hooks to test QEMU
+ or KVM.
+
+**boards**
+
+ Example::
+
+ config SUN4M
+ bool
+ imply TCX
+ imply CG3
+ select CS4231
+ select ECCMEMCTL
+ select EMPTY_SLOT
+ select ESCC
+ select ESP
+ select FDC
+ select SLAVIO
+ select LANCE
+ select M48T59
+ select STP2000
+
+ Boards specify their constituent devices using ``imply`` and ``select``
+ directives. A device should be listed under ``select`` if the board
+ cannot be started at all without it. It should be listed under
+ ``imply`` if (depending on the QEMU command line) the board may or
+ may not be started without it. Boards also default to false; they are
+ enabled by the ``default-configs/*.mak`` for the target they apply to.
+
+**internal elements**
+
+ Example::
+
+ config ECCMEMCTL
+ bool
+ select ECC
+
+ Internal elements group code that is useful in several boards or
+ devices. They are usually enabled with ``select`` and in turn select
+ other elements; they are never visible in ``default-configs/*.mak``
+ files, and often not even in the Makefile.
+
+Writing and modifying default configurations
+--------------------------------------------
+
+In addition to the Kconfig files under hw/, each target also includes
+a file called ``default-configs/TARGETNAME-softmmu.mak``. These files
+initialize some Kconfig variables to non-default values and provide the
+starting point to turn on devices and subsystems.
+
+A file in ``default-configs/`` looks like the following example::
+
+ # Default configuration for alpha-softmmu
+
+ # Uncomment the following lines to disable these optional devices:
+ #
+ #CONFIG_PCI_DEVICES=n
+ #CONFIG_TEST_DEVICES=n
+
+ # Boards:
+ #
+ CONFIG_DP264=y
+
+The first part, consisting of commented-out ``=n`` assignments, tells
+the user which devices or device groups are implied by the boards.
+The second part, consisting of ``=y`` assignments, tells the user which
+boards are supported by the target. The user will typically modify
+the default configuration by uncommenting lines in the first group,
+or commenting out lines in the second group.
+
+It is also possible to run QEMU's configure script with the
+``--with-default-devices`` option. When this is done, everything defaults
+to ``n`` unless it is ``select``ed or explicitly switched on in the
+``.mak`` files. In other words, ``default`` and ``imply`` directives
+are disabled. When QEMU is built with this option, the user will probably
+want to change some lines in the first group, for example like this::
+
+ CONFIG_PCI_DEVICES=y
+ #CONFIG_TEST_DEVICES=n
+
+and/or pick a subset of the devices in those device groups. Right now
+there is no single place that lists all the optional devices for
+``CONFIG_PCI_DEVICES`` and ``CONFIG_TEST_DEVICES``. In the future,
+we expect that ``.mak`` files will be automatically generated, so that
+they will include all these symbols and some help text on what they do.
+
+``Kconfig.host``
+----------------
+
+In some special cases, a configurable element depends on host features
+that are detected by QEMU's configure script; for example some devices
+depend on the availability of KVM or on the presence of a library on
+the host.
+
+These symbols should be listed in ``Kconfig.host`` like this::
+
+ config KVM
+ bool
+
+and also listed as follows in the top-level Makefile's ``MINIKCONF_ARGS``
+variable::
+
+ MINIKCONF_ARGS = \
+ $@ $*-config.devices.mak.d $< $(MINIKCONF_INPUTS) \
+ CONFIG_KVM=$(CONFIG_KVM) \
+ CONFIG_SPICE=$(CONFIG_SPICE) \
+ CONFIG_TPM=$(CONFIG_TPM) \
+ ...
--- /dev/null
+==============
+The memory API
+==============
+
+The memory API models the memory and I/O buses and controllers of a QEMU
+machine. It attempts to allow modelling of:
+
+- ordinary RAM
+- memory-mapped I/O (MMIO)
+- memory controllers that can dynamically reroute physical memory regions
+ to different destinations
+
+The memory model provides support for
+
+- tracking RAM changes by the guest
+- setting up coalesced memory for kvm
+- setting up ioeventfd regions for kvm
+
+Memory is modelled as an acyclic graph of MemoryRegion objects. Sinks
+(leaves) are RAM and MMIO regions, while other nodes represent
+buses, memory controllers, and memory regions that have been rerouted.
+
+In addition to MemoryRegion objects, the memory API provides AddressSpace
+objects for every root and possibly for intermediate MemoryRegions too.
+These represent memory as seen from the CPU or a device's viewpoint.
+
+Types of regions
+----------------
+
+There are multiple types of memory regions (all represented by a single C type
+MemoryRegion):
+
+- RAM: a RAM region is simply a range of host memory that can be made available
+ to the guest.
+ You typically initialize these with memory_region_init_ram(). Some special
+ purposes require the variants memory_region_init_resizeable_ram(),
+ memory_region_init_ram_from_file(), or memory_region_init_ram_ptr().
+
+- MMIO: a range of guest memory that is implemented by host callbacks;
+ each read or write causes a callback to be called on the host.
+ You initialize these with memory_region_init_io(), passing it a
+ MemoryRegionOps structure describing the callbacks.
+
+- ROM: a ROM memory region works like RAM for reads (directly accessing
+ a region of host memory), and forbids writes. You initialize these with
+ memory_region_init_rom().
+
+- ROM device: a ROM device memory region works like RAM for reads
+ (directly accessing a region of host memory), but like MMIO for
+ writes (invoking a callback). You initialize these with
+ memory_region_init_rom_device().
+
+- IOMMU region: an IOMMU region translates addresses of accesses made to it
+ and forwards them to some other target memory region. As the name suggests,
+ these are only needed for modelling an IOMMU, not for simple devices.
+ You initialize these with memory_region_init_iommu().
+
+- container: a container simply includes other memory regions, each at
+ a different offset. Containers are useful for grouping several regions
+ into one unit. For example, a PCI BAR may be composed of a RAM region
+ and an MMIO region.
+
+ A container's subregions are usually non-overlapping. In some cases it is
+ useful to have overlapping regions; for example a memory controller that
+ can overlay a subregion of RAM with MMIO or ROM, or a PCI controller
+ that does not prevent card from claiming overlapping BARs.
+
+ You initialize a pure container with memory_region_init().
+
+- alias: a subsection of another region. Aliases allow a region to be
+ split apart into discontiguous regions. Examples of uses are memory banks
+ used when the guest address space is smaller than the amount of RAM
+ addressed, or a memory controller that splits main memory to expose a "PCI
+ hole". Aliases may point to any type of region, including other aliases,
+ but an alias may not point back to itself, directly or indirectly.
+ You initialize these with memory_region_init_alias().
+
+- reservation region: a reservation region is primarily for debugging.
+ It claims I/O space that is not supposed to be handled by QEMU itself.
+ The typical use is to track parts of the address space which will be
+ handled by the host kernel when KVM is enabled. You initialize these
+ by passing a NULL callback parameter to memory_region_init_io().
+
+It is valid to add subregions to a region which is not a pure container
+(that is, to an MMIO, RAM or ROM region). This means that the region
+will act like a container, except that any addresses within the container's
+region which are not claimed by any subregion are handled by the
+container itself (ie by its MMIO callbacks or RAM backing). However
+it is generally possible to achieve the same effect with a pure container
+one of whose subregions is a low priority "background" region covering
+the whole address range; this is often clearer and is preferred.
+Subregions cannot be added to an alias region.
+
+Migration
+---------
+
+Where the memory region is backed by host memory (RAM, ROM and
+ROM device memory region types), this host memory needs to be
+copied to the destination on migration. These APIs which allocate
+the host memory for you will also register the memory so it is
+migrated:
+
+- memory_region_init_ram()
+- memory_region_init_rom()
+- memory_region_init_rom_device()
+
+For most devices and boards this is the correct thing. If you
+have a special case where you need to manage the migration of
+the backing memory yourself, you can call the functions:
+
+- memory_region_init_ram_nomigrate()
+- memory_region_init_rom_nomigrate()
+- memory_region_init_rom_device_nomigrate()
+
+which only initialize the MemoryRegion and leave handling
+migration to the caller.
+
+The functions:
+
+- memory_region_init_resizeable_ram()
+- memory_region_init_ram_from_file()
+- memory_region_init_ram_from_fd()
+- memory_region_init_ram_ptr()
+- memory_region_init_ram_device_ptr()
+
+are for special cases only, and so they do not automatically
+register the backing memory for migration; the caller must
+manage migration if necessary.
+
+Region names
+------------
+
+Regions are assigned names by the constructor. For most regions these are
+only used for debugging purposes, but RAM regions also use the name to identify
+live migration sections. This means that RAM region names need to have ABI
+stability.
+
+Region lifecycle
+----------------
+
+A region is created by one of the memory_region_init*() functions and
+attached to an object, which acts as its owner or parent. QEMU ensures
+that the owner object remains alive as long as the region is visible to
+the guest, or as long as the region is in use by a virtual CPU or another
+device. For example, the owner object will not die between an
+address_space_map operation and the corresponding address_space_unmap.
+
+After creation, a region can be added to an address space or a
+container with memory_region_add_subregion(), and removed using
+memory_region_del_subregion().
+
+Various region attributes (read-only, dirty logging, coalesced mmio,
+ioeventfd) can be changed during the region lifecycle. They take effect
+as soon as the region is made visible. This can be immediately, later,
+or never.
+
+Destruction of a memory region happens automatically when the owner
+object dies.
+
+If however the memory region is part of a dynamically allocated data
+structure, you should call object_unparent() to destroy the memory region
+before the data structure is freed. For an example see VFIOMSIXInfo
+and VFIOQuirk in hw/vfio/pci.c.
+
+You must not destroy a memory region as long as it may be in use by a
+device or CPU. In order to do this, as a general rule do not create or
+destroy memory regions dynamically during a device's lifetime, and only
+call object_unparent() in the memory region owner's instance_finalize
+callback. The dynamically allocated data structure that contains the
+memory region then should obviously be freed in the instance_finalize
+callback as well.
+
+If you break this rule, the following situation can happen:
+
+- the memory region's owner had a reference taken via memory_region_ref
+ (for example by address_space_map)
+
+- the region is unparented, and has no owner anymore
+
+- when address_space_unmap is called, the reference to the memory region's
+ owner is leaked.
+
+
+There is an exception to the above rule: it is okay to call
+object_unparent at any time for an alias or a container region. It is
+therefore also okay to create or destroy alias and container regions
+dynamically during a device's lifetime.
+
+This exceptional usage is valid because aliases and containers only help
+QEMU building the guest's memory map; they are never accessed directly.
+memory_region_ref and memory_region_unref are never called on aliases
+or containers, and the above situation then cannot happen. Exploiting
+this exception is rarely necessary, and therefore it is discouraged,
+but nevertheless it is used in a few places.
+
+For regions that "have no owner" (NULL is passed at creation time), the
+machine object is actually used as the owner. Since instance_finalize is
+never called for the machine object, you must never call object_unparent
+on regions that have no owner, unless they are aliases or containers.
+
+
+Overlapping regions and priority
+--------------------------------
+Usually, regions may not overlap each other; a memory address decodes into
+exactly one target. In some cases it is useful to allow regions to overlap,
+and sometimes to control which of an overlapping regions is visible to the
+guest. This is done with memory_region_add_subregion_overlap(), which
+allows the region to overlap any other region in the same container, and
+specifies a priority that allows the core to decide which of two regions at
+the same address are visible (highest wins).
+Priority values are signed, and the default value is zero. This means that
+you can use memory_region_add_subregion_overlap() both to specify a region
+that must sit 'above' any others (with a positive priority) and also a
+background region that sits 'below' others (with a negative priority).
+
+If the higher priority region in an overlap is a container or alias, then
+the lower priority region will appear in any "holes" that the higher priority
+region has left by not mapping subregions to that area of its address range.
+(This applies recursively -- if the subregions are themselves containers or
+aliases that leave holes then the lower priority region will appear in these
+holes too.)
+
+For example, suppose we have a container A of size 0x8000 with two subregions
+B and C. B is a container mapped at 0x2000, size 0x4000, priority 2; C is
+an MMIO region mapped at 0x0, size 0x6000, priority 1. B currently has two
+of its own subregions: D of size 0x1000 at offset 0 and E of size 0x1000 at
+offset 0x2000. As a diagram::
+
+ 0 1000 2000 3000 4000 5000 6000 7000 8000
+ |------|------|------|------|------|------|------|------|
+ A: [ ]
+ C: [CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC]
+ B: [ ]
+ D: [DDDDD]
+ E: [EEEEE]
+
+The regions that will be seen within this address range then are::
+
+ [CCCCCCCCCCCC][DDDDD][CCCCC][EEEEE][CCCCC]
+
+Since B has higher priority than C, its subregions appear in the flat map
+even where they overlap with C. In ranges where B has not mapped anything
+C's region appears.
+
+If B had provided its own MMIO operations (ie it was not a pure container)
+then these would be used for any addresses in its range not handled by
+D or E, and the result would be::
+
+ [CCCCCCCCCCCC][DDDDD][BBBBB][EEEEE][BBBBB]
+
+Priority values are local to a container, because the priorities of two
+regions are only compared when they are both children of the same container.
+This means that the device in charge of the container (typically modelling
+a bus or a memory controller) can use them to manage the interaction of
+its child regions without any side effects on other parts of the system.
+In the example above, the priorities of D and E are unimportant because
+they do not overlap each other. It is the relative priority of B and C
+that causes D and E to appear on top of C: D and E's priorities are never
+compared against the priority of C.
+
+Visibility
+----------
+The memory core uses the following rules to select a memory region when the
+guest accesses an address:
+
+- all direct subregions of the root region are matched against the address, in
+ descending priority order
+
+ - if the address lies outside the region offset/size, the subregion is
+ discarded
+ - if the subregion is a leaf (RAM or MMIO), the search terminates, returning
+ this leaf region
+ - if the subregion is a container, the same algorithm is used within the
+ subregion (after the address is adjusted by the subregion offset)
+ - if the subregion is an alias, the search is continued at the alias target
+ (after the address is adjusted by the subregion offset and alias offset)
+ - if a recursive search within a container or alias subregion does not
+ find a match (because of a "hole" in the container's coverage of its
+ address range), then if this is a container with its own MMIO or RAM
+ backing the search terminates, returning the container itself. Otherwise
+ we continue with the next subregion in priority order
+
+- if none of the subregions match the address then the search terminates
+ with no match found
+
+Example memory map
+------------------
+
+::
+
+ system_memory: container@0-2^48-1
+ |
+ +---- lomem: alias@0-0xdfffffff ---> #ram (0-0xdfffffff)
+ |
+ +---- himem: alias@0x100000000-0x11fffffff ---> #ram (0xe0000000-0xffffffff)
+ |
+ +---- vga-window: alias@0xa0000-0xbffff ---> #pci (0xa0000-0xbffff)
+ | (prio 1)
+ |
+ +---- pci-hole: alias@0xe0000000-0xffffffff ---> #pci (0xe0000000-0xffffffff)
+
+ pci (0-2^32-1)
+ |
+ +--- vga-area: container@0xa0000-0xbffff
+ | |
+ | +--- alias@0x00000-0x7fff ---> #vram (0x010000-0x017fff)
+ | |
+ | +--- alias@0x08000-0xffff ---> #vram (0x020000-0x027fff)
+ |
+ +---- vram: ram@0xe1000000-0xe1ffffff
+ |
+ +---- vga-mmio: mmio@0xe2000000-0xe200ffff
+
+ ram: ram@0x00000000-0xffffffff
+
+This is a (simplified) PC memory map. The 4GB RAM block is mapped into the
+system address space via two aliases: "lomem" is a 1:1 mapping of the first
+3.5GB; "himem" maps the last 0.5GB at address 4GB. This leaves 0.5GB for the
+so-called PCI hole, that allows a 32-bit PCI bus to exist in a system with
+4GB of memory.
+
+The memory controller diverts addresses in the range 640K-768K to the PCI
+address space. This is modelled using the "vga-window" alias, mapped at a
+higher priority so it obscures the RAM at the same addresses. The vga window
+can be removed by programming the memory controller; this is modelled by
+removing the alias and exposing the RAM underneath.
+
+The pci address space is not a direct child of the system address space, since
+we only want parts of it to be visible (we accomplish this using aliases).
+It has two subregions: vga-area models the legacy vga window and is occupied
+by two 32K memory banks pointing at two sections of the framebuffer.
+In addition the vram is mapped as a BAR at address e1000000, and an additional
+BAR containing MMIO registers is mapped after it.
+
+Note that if the guest maps a BAR outside the PCI hole, it would not be
+visible as the pci-hole alias clips it to a 0.5GB range.
+
+MMIO Operations
+---------------
+
+MMIO regions are provided with ->read() and ->write() callbacks,
+which are sufficient for most devices. Some devices change behaviour
+based on the attributes used for the memory transaction, or need
+to be able to respond that the access should provoke a bus error
+rather than completing successfully; those devices can use the
+->read_with_attrs() and ->write_with_attrs() callbacks instead.
+
+In addition various constraints can be supplied to control how these
+callbacks are called:
+
+- .valid.min_access_size, .valid.max_access_size define the access sizes
+ (in bytes) which the device accepts; accesses outside this range will
+ have device and bus specific behaviour (ignored, or machine check)
+- .valid.unaligned specifies that the *device being modelled* supports
+ unaligned accesses; if false, unaligned accesses will invoke the
+ appropriate bus or CPU specific behaviour.
+- .impl.min_access_size, .impl.max_access_size define the access sizes
+ (in bytes) supported by the *implementation*; other access sizes will be
+ emulated using the ones available. For example a 4-byte write will be
+ emulated using four 1-byte writes, if .impl.max_access_size = 1.
+- .impl.unaligned specifies that the *implementation* supports unaligned
+ accesses; if false, unaligned accesses will be emulated by two aligned
+ accesses.
+++ /dev/null
-The memory API
-==============
-
-The memory API models the memory and I/O buses and controllers of a QEMU
-machine. It attempts to allow modelling of:
-
- - ordinary RAM
- - memory-mapped I/O (MMIO)
- - memory controllers that can dynamically reroute physical memory regions
- to different destinations
-
-The memory model provides support for
-
- - tracking RAM changes by the guest
- - setting up coalesced memory for kvm
- - setting up ioeventfd regions for kvm
-
-Memory is modelled as an acyclic graph of MemoryRegion objects. Sinks
-(leaves) are RAM and MMIO regions, while other nodes represent
-buses, memory controllers, and memory regions that have been rerouted.
-
-In addition to MemoryRegion objects, the memory API provides AddressSpace
-objects for every root and possibly for intermediate MemoryRegions too.
-These represent memory as seen from the CPU or a device's viewpoint.
-
-Types of regions
-----------------
-
-There are multiple types of memory regions (all represented by a single C type
-MemoryRegion):
-
-- RAM: a RAM region is simply a range of host memory that can be made available
- to the guest.
- You typically initialize these with memory_region_init_ram(). Some special
- purposes require the variants memory_region_init_resizeable_ram(),
- memory_region_init_ram_from_file(), or memory_region_init_ram_ptr().
-
-- MMIO: a range of guest memory that is implemented by host callbacks;
- each read or write causes a callback to be called on the host.
- You initialize these with memory_region_init_io(), passing it a
- MemoryRegionOps structure describing the callbacks.
-
-- ROM: a ROM memory region works like RAM for reads (directly accessing
- a region of host memory), and forbids writes. You initialize these with
- memory_region_init_rom().
-
-- ROM device: a ROM device memory region works like RAM for reads
- (directly accessing a region of host memory), but like MMIO for
- writes (invoking a callback). You initialize these with
- memory_region_init_rom_device().
-
-- IOMMU region: an IOMMU region translates addresses of accesses made to it
- and forwards them to some other target memory region. As the name suggests,
- these are only needed for modelling an IOMMU, not for simple devices.
- You initialize these with memory_region_init_iommu().
-
-- container: a container simply includes other memory regions, each at
- a different offset. Containers are useful for grouping several regions
- into one unit. For example, a PCI BAR may be composed of a RAM region
- and an MMIO region.
-
- A container's subregions are usually non-overlapping. In some cases it is
- useful to have overlapping regions; for example a memory controller that
- can overlay a subregion of RAM with MMIO or ROM, or a PCI controller
- that does not prevent card from claiming overlapping BARs.
-
- You initialize a pure container with memory_region_init().
-
-- alias: a subsection of another region. Aliases allow a region to be
- split apart into discontiguous regions. Examples of uses are memory banks
- used when the guest address space is smaller than the amount of RAM
- addressed, or a memory controller that splits main memory to expose a "PCI
- hole". Aliases may point to any type of region, including other aliases,
- but an alias may not point back to itself, directly or indirectly.
- You initialize these with memory_region_init_alias().
-
-- reservation region: a reservation region is primarily for debugging.
- It claims I/O space that is not supposed to be handled by QEMU itself.
- The typical use is to track parts of the address space which will be
- handled by the host kernel when KVM is enabled. You initialize these
- by passing a NULL callback parameter to memory_region_init_io().
-
-It is valid to add subregions to a region which is not a pure container
-(that is, to an MMIO, RAM or ROM region). This means that the region
-will act like a container, except that any addresses within the container's
-region which are not claimed by any subregion are handled by the
-container itself (ie by its MMIO callbacks or RAM backing). However
-it is generally possible to achieve the same effect with a pure container
-one of whose subregions is a low priority "background" region covering
-the whole address range; this is often clearer and is preferred.
-Subregions cannot be added to an alias region.
-
-Migration
----------
-
-Where the memory region is backed by host memory (RAM, ROM and
-ROM device memory region types), this host memory needs to be
-copied to the destination on migration. These APIs which allocate
-the host memory for you will also register the memory so it is
-migrated:
- - memory_region_init_ram()
- - memory_region_init_rom()
- - memory_region_init_rom_device()
-
-For most devices and boards this is the correct thing. If you
-have a special case where you need to manage the migration of
-the backing memory yourself, you can call the functions:
- - memory_region_init_ram_nomigrate()
- - memory_region_init_rom_nomigrate()
- - memory_region_init_rom_device_nomigrate()
-which only initialize the MemoryRegion and leave handling
-migration to the caller.
-
-The functions:
- - memory_region_init_resizeable_ram()
- - memory_region_init_ram_from_file()
- - memory_region_init_ram_from_fd()
- - memory_region_init_ram_ptr()
- - memory_region_init_ram_device_ptr()
-are for special cases only, and so they do not automatically
-register the backing memory for migration; the caller must
-manage migration if necessary.
-
-Region names
-------------
-
-Regions are assigned names by the constructor. For most regions these are
-only used for debugging purposes, but RAM regions also use the name to identify
-live migration sections. This means that RAM region names need to have ABI
-stability.
-
-Region lifecycle
-----------------
-
-A region is created by one of the memory_region_init*() functions and
-attached to an object, which acts as its owner or parent. QEMU ensures
-that the owner object remains alive as long as the region is visible to
-the guest, or as long as the region is in use by a virtual CPU or another
-device. For example, the owner object will not die between an
-address_space_map operation and the corresponding address_space_unmap.
-
-After creation, a region can be added to an address space or a
-container with memory_region_add_subregion(), and removed using
-memory_region_del_subregion().
-
-Various region attributes (read-only, dirty logging, coalesced mmio,
-ioeventfd) can be changed during the region lifecycle. They take effect
-as soon as the region is made visible. This can be immediately, later,
-or never.
-
-Destruction of a memory region happens automatically when the owner
-object dies.
-
-If however the memory region is part of a dynamically allocated data
-structure, you should call object_unparent() to destroy the memory region
-before the data structure is freed. For an example see VFIOMSIXInfo
-and VFIOQuirk in hw/vfio/pci.c.
-
-You must not destroy a memory region as long as it may be in use by a
-device or CPU. In order to do this, as a general rule do not create or
-destroy memory regions dynamically during a device's lifetime, and only
-call object_unparent() in the memory region owner's instance_finalize
-callback. The dynamically allocated data structure that contains the
-memory region then should obviously be freed in the instance_finalize
-callback as well.
-
-If you break this rule, the following situation can happen:
-
-- the memory region's owner had a reference taken via memory_region_ref
- (for example by address_space_map)
-
-- the region is unparented, and has no owner anymore
-
-- when address_space_unmap is called, the reference to the memory region's
- owner is leaked.
-
-
-There is an exception to the above rule: it is okay to call
-object_unparent at any time for an alias or a container region. It is
-therefore also okay to create or destroy alias and container regions
-dynamically during a device's lifetime.
-
-This exceptional usage is valid because aliases and containers only help
-QEMU building the guest's memory map; they are never accessed directly.
-memory_region_ref and memory_region_unref are never called on aliases
-or containers, and the above situation then cannot happen. Exploiting
-this exception is rarely necessary, and therefore it is discouraged,
-but nevertheless it is used in a few places.
-
-For regions that "have no owner" (NULL is passed at creation time), the
-machine object is actually used as the owner. Since instance_finalize is
-never called for the machine object, you must never call object_unparent
-on regions that have no owner, unless they are aliases or containers.
-
-
-Overlapping regions and priority
---------------------------------
-Usually, regions may not overlap each other; a memory address decodes into
-exactly one target. In some cases it is useful to allow regions to overlap,
-and sometimes to control which of an overlapping regions is visible to the
-guest. This is done with memory_region_add_subregion_overlap(), which
-allows the region to overlap any other region in the same container, and
-specifies a priority that allows the core to decide which of two regions at
-the same address are visible (highest wins).
-Priority values are signed, and the default value is zero. This means that
-you can use memory_region_add_subregion_overlap() both to specify a region
-that must sit 'above' any others (with a positive priority) and also a
-background region that sits 'below' others (with a negative priority).
-
-If the higher priority region in an overlap is a container or alias, then
-the lower priority region will appear in any "holes" that the higher priority
-region has left by not mapping subregions to that area of its address range.
-(This applies recursively -- if the subregions are themselves containers or
-aliases that leave holes then the lower priority region will appear in these
-holes too.)
-
-For example, suppose we have a container A of size 0x8000 with two subregions
-B and C. B is a container mapped at 0x2000, size 0x4000, priority 2; C is
-an MMIO region mapped at 0x0, size 0x6000, priority 1. B currently has two
-of its own subregions: D of size 0x1000 at offset 0 and E of size 0x1000 at
-offset 0x2000. As a diagram:
-
- 0 1000 2000 3000 4000 5000 6000 7000 8000
- |------|------|------|------|------|------|------|------|
- A: [ ]
- C: [CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC]
- B: [ ]
- D: [DDDDD]
- E: [EEEEE]
-
-The regions that will be seen within this address range then are:
- [CCCCCCCCCCCC][DDDDD][CCCCC][EEEEE][CCCCC]
-
-Since B has higher priority than C, its subregions appear in the flat map
-even where they overlap with C. In ranges where B has not mapped anything
-C's region appears.
-
-If B had provided its own MMIO operations (ie it was not a pure container)
-then these would be used for any addresses in its range not handled by
-D or E, and the result would be:
- [CCCCCCCCCCCC][DDDDD][BBBBB][EEEEE][BBBBB]
-
-Priority values are local to a container, because the priorities of two
-regions are only compared when they are both children of the same container.
-This means that the device in charge of the container (typically modelling
-a bus or a memory controller) can use them to manage the interaction of
-its child regions without any side effects on other parts of the system.
-In the example above, the priorities of D and E are unimportant because
-they do not overlap each other. It is the relative priority of B and C
-that causes D and E to appear on top of C: D and E's priorities are never
-compared against the priority of C.
-
-Visibility
-----------
-The memory core uses the following rules to select a memory region when the
-guest accesses an address:
-
-- all direct subregions of the root region are matched against the address, in
- descending priority order
- - if the address lies outside the region offset/size, the subregion is
- discarded
- - if the subregion is a leaf (RAM or MMIO), the search terminates, returning
- this leaf region
- - if the subregion is a container, the same algorithm is used within the
- subregion (after the address is adjusted by the subregion offset)
- - if the subregion is an alias, the search is continued at the alias target
- (after the address is adjusted by the subregion offset and alias offset)
- - if a recursive search within a container or alias subregion does not
- find a match (because of a "hole" in the container's coverage of its
- address range), then if this is a container with its own MMIO or RAM
- backing the search terminates, returning the container itself. Otherwise
- we continue with the next subregion in priority order
-- if none of the subregions match the address then the search terminates
- with no match found
-
-Example memory map
-------------------
-
-system_memory: container@0-2^48-1
- |
- +---- lomem: alias@0-0xdfffffff ---> #ram (0-0xdfffffff)
- |
- +---- himem: alias@0x100000000-0x11fffffff ---> #ram (0xe0000000-0xffffffff)
- |
- +---- vga-window: alias@0xa0000-0xbffff ---> #pci (0xa0000-0xbffff)
- | (prio 1)
- |
- +---- pci-hole: alias@0xe0000000-0xffffffff ---> #pci (0xe0000000-0xffffffff)
-
-pci (0-2^32-1)
- |
- +--- vga-area: container@0xa0000-0xbffff
- | |
- | +--- alias@0x00000-0x7fff ---> #vram (0x010000-0x017fff)
- | |
- | +--- alias@0x08000-0xffff ---> #vram (0x020000-0x027fff)
- |
- +---- vram: ram@0xe1000000-0xe1ffffff
- |
- +---- vga-mmio: mmio@0xe2000000-0xe200ffff
-
-ram: ram@0x00000000-0xffffffff
-
-This is a (simplified) PC memory map. The 4GB RAM block is mapped into the
-system address space via two aliases: "lomem" is a 1:1 mapping of the first
-3.5GB; "himem" maps the last 0.5GB at address 4GB. This leaves 0.5GB for the
-so-called PCI hole, that allows a 32-bit PCI bus to exist in a system with
-4GB of memory.
-
-The memory controller diverts addresses in the range 640K-768K to the PCI
-address space. This is modelled using the "vga-window" alias, mapped at a
-higher priority so it obscures the RAM at the same addresses. The vga window
-can be removed by programming the memory controller; this is modelled by
-removing the alias and exposing the RAM underneath.
-
-The pci address space is not a direct child of the system address space, since
-we only want parts of it to be visible (we accomplish this using aliases).
-It has two subregions: vga-area models the legacy vga window and is occupied
-by two 32K memory banks pointing at two sections of the framebuffer.
-In addition the vram is mapped as a BAR at address e1000000, and an additional
-BAR containing MMIO registers is mapped after it.
-
-Note that if the guest maps a BAR outside the PCI hole, it would not be
-visible as the pci-hole alias clips it to a 0.5GB range.
-
-MMIO Operations
----------------
-
-MMIO regions are provided with ->read() and ->write() callbacks,
-which are sufficient for most devices. Some devices change behaviour
-based on the attributes used for the memory transaction, or need
-to be able to respond that the access should provoke a bus error
-rather than completing successfully; those devices can use the
-->read_with_attrs() and ->write_with_attrs() callbacks instead.
-
-In addition various constraints can be supplied to control how these
-callbacks are called:
-
- - .valid.min_access_size, .valid.max_access_size define the access sizes
- (in bytes) which the device accepts; accesses outside this range will
- have device and bus specific behaviour (ignored, or machine check)
- - .valid.unaligned specifies that the *device being modelled* supports
- unaligned accesses; if false, unaligned accesses will invoke the
- appropriate bus or CPU specific behaviour.
- - .impl.min_access_size, .impl.max_access_size define the access sizes
- (in bytes) supported by the *implementation*; other access sizes will be
- emulated using the ones available. For example a 4-byte write will be
- emulated using four 1-byte writes, if .impl.max_access_size = 1.
- - .impl.unaligned specifies that the *implementation* supports unaligned
- accesses; if false, unaligned accesses will be emulated by two aligned
- accesses.
class Version(Test):
"""
- :avocado: enable
:avocado: tags=quick
"""
def test_qmp_human_info_version(self):
QEMU command line, launching the QEMUMachine (by using ``self.vm.launch()``)
is left to the test writer.
-At test "tear down", ``avocado_qemu.Test`` handles the QEMUMachine
+The base test class has also support for tests with more than one
+QEMUMachine. The way to get machines is through the ``self.get_vm()``
+method which will return a QEMUMachine instance. The ``self.get_vm()``
+method accepts arguments that will be passed to the QEMUMachine creation
+and also an optional `name` attribute so you can identify a specific
+machine and get it more than once through the tests methods. A simple
+and hypothetical example follows:
+
+.. code::
+
+ from avocado_qemu import Test
+
+
+ class MultipleMachines(Test):
+ """
+ :avocado: enable
+ """
+ def test_multiple_machines(self):
+ first_machine = self.get_vm()
+ second_machine = self.get_vm()
+ self.get_vm(name='third_machine').launch()
+
+ first_machine.launch()
+ second_machine.launch()
+
+ first_res = first_machine.command(
+ 'human-monitor-command',
+ command_line='info version')
+
+ second_res = second_machine.command(
+ 'human-monitor-command',
+ command_line='info version')
+
+ third_res = self.get_vm(name='third_machine').command(
+ 'human-monitor-command',
+ command_line='info version')
+
+ self.assertEquals(first_res, second_res, third_res)
+
+At test "tear down", ``avocado_qemu.Test`` handles all the QEMUMachines
shutdown.
QEMUMachine
--- /dev/null
+.. QEMU documentation master file, created by
+ sphinx-quickstart on Thu Jan 31 16:40:14 2019.
+ You can adapt this file completely to your liking, but it should at least
+ contain the root `toctree` directive.
+
+Welcome to QEMU's documentation!
+================================
+
+.. toctree::
+ :maxdepth: 2
+ :caption: Contents:
+
+ interop/index
+ devel/index
+
--- /dev/null
+# -*- coding: utf-8 -*-
+#
+# QEMU documentation build configuration file for the 'interop' manual.
+#
+# This includes the top level conf file and then makes any necessary tweaks.
+import sys
+import os
+
+qemu_docdir = os.path.abspath("..")
+parent_config = os.path.join(qemu_docdir, "conf.py")
+exec(compile(open(parent_config, "rb").read(), parent_config, 'exec'))
+
+# This slightly misuses the 'description', but is the best way to get
+# the manual title to appear in the sidebar.
+html_theme_options['description'] = u'System Emulation Management and Interoperability Guide'
--- /dev/null
+.. This is the top level page for the 'interop' manual.
+
+
+QEMU System Emulation Management and Interoperability Guide
+===========================================================
+
+This manual contains documents and specifications that are useful
+for making QEMU interoperate with other software.
+
+Contents:
+
+.. toctree::
+ :maxdepth: 2
+
+ bitmaps
+ live-block-operations
+ pr-helper
+
--- /dev/null
+config VIRTIO_9P
+ bool
+ default y
+ depends on VIRTFS && VIRTIO
-ifeq ($(call lor,$(CONFIG_VIRTIO_9P),$(CONFIG_XEN)),y)
common-obj-y = 9p.o 9p-util.o
common-obj-y += 9p-local.o 9p-xattr.o
common-obj-y += 9p-xattr-user.o 9p-posix-acl.o
common-obj-y += coth.o cofs.o codir.o cofile.o
common-obj-y += coxattr.o 9p-synth.o
common-obj-y += 9p-proxy.o
-endif
common-obj-$(CONFIG_XEN) += xen-9p-backend.o
obj-$(CONFIG_VIRTIO_9P) += virtio-9p-device.o
--- /dev/null
+# devices Kconfig
+source 9pfs/Kconfig
+source acpi/Kconfig
+source adc/Kconfig
+source audio/Kconfig
+source block/Kconfig
+source bt/Kconfig
+source char/Kconfig
+source core/Kconfig
+source display/Kconfig
+source dma/Kconfig
+source gpio/Kconfig
+source hyperv/Kconfig
+source i2c/Kconfig
+source ide/Kconfig
+source input/Kconfig
+source intc/Kconfig
+source ipack/Kconfig
+source ipmi/Kconfig
+source isa/Kconfig
+source mem/Kconfig
+source misc/Kconfig
+source net/Kconfig
+source nvram/Kconfig
+source pci-bridge/Kconfig
+source pci-host/Kconfig
+source pcmcia/Kconfig
+source pci/Kconfig
+source scsi/Kconfig
+source sd/Kconfig
+source smbios/Kconfig
+source ssi/Kconfig
+source timer/Kconfig
+source tpm/Kconfig
+source usb/Kconfig
+source virtio/Kconfig
+source vfio/Kconfig
+source watchdog/Kconfig
+
+# arch Kconfig
+source arm/Kconfig
+source alpha/Kconfig
+source cris/Kconfig
+source hppa/Kconfig
+source i386/Kconfig
+source lm32/Kconfig
+source m68k/Kconfig
+source microblaze/Kconfig
+source mips/Kconfig
+source moxie/Kconfig
+source nios2/Kconfig
+source openrisc/Kconfig
+source ppc/Kconfig
+source riscv/Kconfig
+source s390x/Kconfig
+source sh4/Kconfig
+source sparc/Kconfig
+source sparc64/Kconfig
+source tricore/Kconfig
+source unicore32/Kconfig
+source xtensa/Kconfig
+
+# Symbols used by multiple targets
+config TEST_DEVICES
+ bool
+
+config XILINX
+ bool
+ select PTIMER # for hw/timer/xilinx_timer.c
+
+config XILINX_AXI
+ bool
+ select PTIMER # for hw/dma/xilinx_axidma.c
-devices-dirs-$(call land,$(CONFIG_VIRTFS),$(call lor,$(CONFIG_VIRTIO),$(CONFIG_XEN))) += 9pfs/
+devices-dirs-$(call lor,$(CONFIG_VIRTIO_9P),$(call land,$(CONFIG_VIRTFS),$(CONFIG_XEN))) += 9pfs/
devices-dirs-$(CONFIG_SOFTMMU) += acpi/
devices-dirs-$(CONFIG_SOFTMMU) += adc/
devices-dirs-$(CONFIG_SOFTMMU) += audio/
devices-dirs-$(CONFIG_SOFTMMU) += dma/
devices-dirs-$(CONFIG_SOFTMMU) += gpio/
devices-dirs-$(CONFIG_HYPERV) += hyperv/
-devices-dirs-$(CONFIG_SOFTMMU) += i2c/
+devices-dirs-$(CONFIG_I2C) += i2c/
devices-dirs-$(CONFIG_SOFTMMU) += ide/
devices-dirs-$(CONFIG_SOFTMMU) += input/
devices-dirs-$(CONFIG_SOFTMMU) += intc/
--- /dev/null
+config ACPI
+ bool
+
+config ACPI_X86
+ bool
+ select ACPI
+ select ACPI_NVDIMM
+ select ACPI_CPU_HOTPLUG
+ select ACPI_MEMORY_HOTPLUG
+
+config ACPI_X86_ICH
+ bool
+ select ACPI_X86
+
+config ACPI_CPU_HOTPLUG
+ bool
+
+config ACPI_MEMORY_HOTPLUG
+ bool
+ select MEM_DEVICE
+
+config ACPI_NVDIMM
+ bool
+ depends on ACPI
+
+config ACPI_VMGENID
+ bool
+ default y
+ depends on PC
--- /dev/null
+config STM32F2XX_ADC
+ bool
--- /dev/null
+config DP264
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select I82374
+ select I8254
+ select I8259
+ select IDE_CMD646
+ select MC146818RTC
+ select PCI
+ select PCKBD
+ select SMC37C669
--- /dev/null
+config ARM_VIRT
+ bool
+ imply VFIO_PLATFORM
+
+config DIGIC
+ bool
+ select PTIMER
+
+config EXYNOS4
+ bool
+ select PTIMER
+
+config HIGHBANK
+ bool
+
+config INTEGRATOR
+ bool
+
+config MAINSTONE
+ bool
+
+config MUSICPAL
+ bool
+ select PTIMER
+
+config NETDUINO2
+ bool
+
+config NSERIES
+ bool
+
+config OMAP
+ bool
+
+config PXA2XX
+ bool
+
+config REALVIEW
+ bool
+
+config STELLARIS
+ bool
+
+config STRONGARM
+ bool
+
+config VERSATILE
+ bool
+
+config ZYNQ
+ bool
+
+config ARM_V7M
+ bool
+
+config ALLWINNER_A10
+ bool
+
+config RASPI
+ bool
+
+config STM32F205_SOC
+ bool
+
+config XLNX_ZYNQMP_ARM
+ bool
+
+config XLNX_VERSAL
+ bool
+
+config FSL_IMX25
+ bool
+
+config FSL_IMX31
+ bool
+
+config FSL_IMX6
+ bool
+
+config ASPEED_SOC
+ bool
+
+config MPS2
+ bool
+
+config FSL_IMX7
+ bool
+
+config ARM_SMMUV3
+ bool
+
+config FSL_IMX6UL
+ bool
+
+config NRF51_SOC
+ bool
+
+config MSF2
+ bool
+ select PTIMER
+
+config ZAURUS
+ bool
+
+config A9MPCORE
+ bool
+
+config A15MPCORE
+ bool
+
+config ARM11MPCORE
+ bool
+
+config ARMSSE
+ bool
+
+config ARMSSE_CPUID
+ bool
+
+config ARMSSE_MHU
+ bool
+
+config MUSCA
+ bool
--- /dev/null
+config SB16
+ bool
+ default y
+ depends on ISA_BUS
+
+config ES1370
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config AC97
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config ADLIB
+ bool
+ default y
+ depends on ISA_BUS
+
+config GUS
+ bool
+ default y
+ depends on ISA_BUS
+
+config CS4231A
+ bool
+ default y
+ depends on ISA_BUS
+
+config HDA
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config PCSPK
+ bool
+ default y
+ depends on I8254
+
+config WM8750
+ bool
+ depends on I2C
+
+config PL041
+ bool
+
+config CS4231
+ bool
+
+config MARVELL_88W8618
+ bool
--- /dev/null
+config FDC
+ bool
+ # FIXME: there is no separate file for the MMIO floppy disk controller, so
+ # select ISA_BUS here instead of polluting each board that requires one
+ select ISA_BUS
+
+config SSI_M25P80
+ bool
+
+config NAND
+ bool
+
+config PFLASH_CFI01
+ bool
+
+config PFLASH_CFI02
+ bool
+
+config ECC
+ bool
+
+config ONENAND
+ bool
+
+config NVME_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config VIRTIO_BLK
+ bool
+ default y
+ depends on VIRTIO
+
+config VHOST_USER_BLK
+ bool
+ # Only PCI devices are provided for now
+ default y if VIRTIO_PCI
+ depends on VIRTIO && VHOST_USER && LINUX
obj-$(CONFIG_SH4) += tc58128.o
obj-$(CONFIG_VIRTIO_BLK) += virtio-blk.o
-obj-$(CONFIG_VIRTIO_BLK) += dataplane/
obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o
+
+obj-y += dataplane/
-obj-y += virtio-blk.o
+obj-$(CONFIG_VIRTIO_BLK) += virtio-blk.o
obj-$(CONFIG_XEN) += xen-block.o
--- /dev/null
+config BLUETOOTH
+ bool
--- /dev/null
+config ESCC
+ bool
+
+config PARALLEL
+ bool
+ default y
+ depends on ISA_BUS
+
+config PL011
+ bool
+
+config SERIAL
+ bool
+
+config SERIAL_ISA
+ bool
+ default y
+ depends on ISA_BUS
+ select SERIAL
+
+config SERIAL_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SERIAL
+
+config VIRTIO_SERIAL
+ bool
+ default y
+ depends on VIRTIO
+
+config STM32F2XX_USART
+ bool
+
+config CMSDK_APB_UART
+ bool
+
+config SCLPCONSOLE
+ bool
+
+config TERMINAL3270
+ bool
--- /dev/null
+config EMPTY_SLOT
+ bool
+
+config PTIMER
+ bool
+
+config FITLOADER
+ bool
+
+config PLATFORM_BUS
+ bool
--- /dev/null
+config ARM11MPCORE
+ bool
+
+config A9MPCORE
+ bool
+
+config A15MPCORE
+ bool
--- /dev/null
+config AXIS
+ bool
+ select ETRAXFS
+ select PFLASH_CFI02
+ select NAND
+
+config ETRAXFS
+ bool
+ select PTIMER
--- /dev/null
+config EDID
+ bool
+
+config FW_CFG_DMA
+ bool
+
+config ADS7846
+ bool
+
+config VGA_CIRRUS
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select VGA
+
+config G364FB
+ bool
+
+config JAZZ_LED
+ bool
+
+config PL110
+ bool
+
+config SII9022
+ bool
+ depends on I2C
+
+config SSD0303
+ bool
+ depends on I2C
+
+config SSD0323
+ bool
+
+config VGA_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select VGA
+ select EDID
+
+config VGA_ISA
+ bool
+ depends on ISA_BUS
+ select VGA
+
+config VGA_ISA_MM
+ bool
+ select VGA
+
+config VMWARE_VGA
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select VGA
+
+config BOCHS_DISPLAY
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select VGA
+ select EDID
+
+config BLIZZARD
+ bool
+
+config FRAMEBUFFER
+ bool
+
+config MILKYMIST_TMU2
+ bool
+ depends on OPENGL && X11
+
+config SM501
+ bool
+ select I2C
+ select DDC
+ select SERIAL
+
+config TCX
+ bool
+
+config CG3
+ bool
+
+config VGA
+ bool
+
+config QXL
+ bool
+ depends on SPICE && PCI
+ select VGA
+
+config VIRTIO_GPU
+ bool
+ default y
+ depends on VIRTIO
+ select EDID
+
+config VIRTIO_VGA
+ bool
+ default y if PCI_DEVICES
+ depends on VIRTIO_PCI
+ select VGA
+
+config DPCD
+ bool
-common-obj-y += edid-generate.o
+common-obj-$(CONFIG_EDID) += edid-generate.o edid-region.o
common-obj-$(CONFIG_FW_CFG_DMA) += ramfb.o
common-obj-$(CONFIG_FW_CFG_DMA) += ramfb-standalone.o
common-obj-$(CONFIG_XEN) += xenfb.o
common-obj-$(CONFIG_VGA_PCI) += vga-pci.o
-common-obj-$(CONFIG_VGA_PCI) += edid-region.o
common-obj-$(CONFIG_VGA_ISA) += vga-isa.o
common-obj-$(CONFIG_VGA_ISA_MM) += vga-isa-mm.o
common-obj-$(CONFIG_VMWARE_VGA) += vmware_vga.o
common-obj-$(CONFIG_BOCHS_DISPLAY) += bochs-display.o
-common-obj-$(CONFIG_BOCHS_DISPLAY) += edid-region.o
common-obj-$(CONFIG_BLIZZARD) += blizzard.o
common-obj-$(CONFIG_EXYNOS4) += exynos4210_fimd.o
--- /dev/null
+config RC4030
+ bool
+
+config PL080
+ bool
+
+config PL330
+ bool
+
+config I82374
+ bool
+ select I8257
+
+config I8257
+ bool
+
+config ZYNQ_DEVCFG
+ bool
+
+config STP2000
+ bool
--- /dev/null
+config MAX7310
+ bool
+ depends on I2C
+
+config PL061
+ bool
+
+config GPIO_KEY
+ bool
--- /dev/null
+config DINO
+ bool
+ imply PCI_DEVICES
+ select PCI
+ select SERIAL
+ select ISA_BUS
+ select I8259
+ select IDE_CMD646
+ select MC146818RTC
+ select LSI_SCSI_PCI
--- /dev/null
+config HYPERV
+ bool
+ depends on KVM
+
+config HYPERV_TESTDEV
+ bool
+ default y if TEST_DEVICES
+ depends on HYPERV
--- /dev/null
+config I2C
+ bool
+
+config SMBUS_EEPROM
+ bool
+ depends on I2C
+
+config DDC
+ bool
+ depends on I2C
+ select EDID
+
+config VERSATILE_I2C
+ bool
+ select I2C
+
+config ACPI_SMBUS
+ bool
+ select I2C
+
+config BITBANG_I2C
+ bool
+ select I2C
+
+config IMX_I2C
+ bool
+ select I2C
common-obj-$(CONFIG_SMBUS_EEPROM) += smbus_eeprom.o
common-obj-$(CONFIG_DDC) += i2c-ddc.o
common-obj-$(CONFIG_VERSATILE_I2C) += versatile_i2c.o
-common-obj-$(CONFIG_ACPI_X86) += smbus_ich9.o
+common-obj-$(CONFIG_ACPI_X86_ICH) += smbus_ich9.o
common-obj-$(CONFIG_ACPI_SMBUS) += pm_smbus.o
common-obj-$(CONFIG_BITBANG_I2C) += bitbang_i2c.o
common-obj-$(CONFIG_EXYNOS4) += exynos4210_i2c.o
--- /dev/null
+config SEV
+ bool
+ depends on KVM
+
+config PC
+ bool
+ imply APPLESMC
+ imply HYPERV
+ imply ISA_IPMI_KCS
+ imply ISA_IPMI_BT
+ imply ISA_DEBUG
+ imply PCI_DEVICES
+ imply PVPANIC
+ imply QXL
+ imply SEV
+ imply SGA
+ imply TEST_DEVICES
+ imply TPM_CRB
+ imply TPM_TIS
+ select FDC
+ select I8259
+ select I8254
+ select PCKBD
+ select PCSPK
+ select I82374
+ select I8257
+ select MC146818RTC
+ # Needed by the board code:
+ select PARALLEL
+ # For ACPI builder:
+ select SERIAL_ISA
+ select ACPI_VMGENID
+
+config PC_PCI
+ bool
+ select APIC
+ select IOAPIC
+ select APM
+ select PC
+
+config PC_ACPI
+ bool
+ select ACPI_X86
+ select ACPI_CPU_HOTPLUG
+ select ACPI_MEMORY_HOTPLUG
+ select SMBUS_EEPROM
+ select PFLASH_CFI01
+ depends on ACPI_SMBUS
+
+config I440FX
+ bool
+ select PC_PCI
+ select PC_ACPI
+ select ACPI_SMBUS
+ select PCI_PIIX
+ select IDE_PIIX
+ select DIMM
+ select SMBIOS
+ select VMPORT
+ select VMMOUSE
+ select FW_CFG_DMA
+
+config ISAPC
+ bool
+ select ISA_BUS
+ select PC
+ select IDE_ISA
+ select VGA_ISA
+ # FIXME: it is in the same file as i440fx, and does not compile
+ # if separated
+ depends on I440FX
+
+config Q35
+ bool
+ imply VTD
+ imply AMD_IOMMU
+ select PC_PCI
+ select PC_ACPI
+ select PCI_EXPRESS_Q35
+ select LPC_ICH9
+ select AHCI
+ select DIMM
+ select SMBIOS
+ select VMPORT
+ select VMMOUSE
+ select FW_CFG_DMA
+
+config VTD
+ bool
+
+config AMD_IOMMU
+ bool
+
+config VMPORT
+ bool
+
+config VMMOUSE
+ bool
+ depends on VMPORT
obj-$(CONFIG_I440FX) += pc_piix.o
obj-$(CONFIG_Q35) += pc_q35.o
obj-y += pc_sysfw.o
-obj-$(CONFIG_VTD) += x86-iommu.o intel_iommu.o
-obj-$(CONFIG_AMD_IOMMU) += x86-iommu.o amd_iommu.o
+obj-y += x86-iommu.o
+obj-$(CONFIG_VTD) += intel_iommu.o
+obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o
obj-$(CONFIG_XEN) += ../xenpv/ xen/
obj-$(CONFIG_VMPORT) += vmport.o
obj-$(CONFIG_VMMOUSE) += vmmouse.o
--- /dev/null
+config IDE_CORE
+ bool
+
+config IDE_QDEV
+ bool
+ select IDE_CORE
+
+config IDE_PCI
+ bool
+ depends on PCI
+ select IDE_CORE
+
+config IDE_ISA
+ bool
+ depends on ISA_BUS
+ select IDE_QDEV
+
+config IDE_PIIX
+ bool
+ select IDE_PCI
+ select IDE_QDEV
+
+config IDE_CMD646
+ bool
+ select IDE_PCI
+ select IDE_QDEV
+
+config IDE_MACIO
+ bool
+ select IDE_QDEV
+
+config IDE_MMIO
+ bool
+ select IDE_QDEV
+
+config IDE_VIA
+ bool
+ select IDE_PCI
+ select IDE_QDEV
+
+config MICRODRIVE
+ bool
+ select IDE_QDEV
+
+config AHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select IDE_QDEV
+
+config IDE_SII3112
+ bool
+ select IDE_PCI
+ select IDE_QDEV
--- /dev/null
+config ADB
+ bool
+
+config LM832X
+ bool
+ depends on I2C
+
+config PCKBD
+ bool
+ default y
+ depends on ISA_BUS
+
+config PL050
+ bool
+
+config STELLARIS_INPUT
+ bool
+
+config TSC2005
+ bool
+
+config VIRTIO_INPUT
+ bool
+ default y
+ depends on VIRTIO
+
+config VIRTIO_INPUT_HOST
+ bool
+ default y
+ depends on VIRTIO && LINUX
+
+config TSC210X
+ bool
--- /dev/null
+config HEATHROW_PIC
+ bool
+
+config I8259
+ bool
+
+config PL190
+ bool
+
+config IOAPIC
+ bool
+
+config ARM_GIC
+ bool
+
+config OPENPIC
+ bool
+
+config APIC
+ bool
+
+config ARM_GIC_KVM
+ bool
+ default y
+ depends on ARM_GIC && KVM
+
+config OPENPIC_KVM
+ bool
+ default y
+ depends on OPENPIC && KVM
+
+config XICS
+ bool
+ depends on POWERNV || PSERIES
+
+config XICS_SPAPR
+ bool
+ select XICS
+
+config XICS_KVM
+ bool
+ default y
+ depends on XICS && KVM
+
+config ALLWINNER_A10_PIC
+ bool
+
+config S390_FLIC
+ bool
+
+config S390_FLIC_KVM
+ bool
+ default y
+ depends on S390_FLIC && KVM
+
+config OMPIC
+ bool
--- /dev/null
+config IPACK
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
--- /dev/null
+config IPMI
+ bool
+
+config IPMI_LOCAL
+ bool
+ default y
+ depends on IPMI
+
+config IPMI_EXTERN
+ bool
+ default y
+ depends on IPMI
+
+config ISA_IPMI_KCS
+ bool
+ depends on ISA_BUS
+ select IPMI
+
+config ISA_IPMI_BT
+ bool
+ depends on ISA_BUS
+ select IPMI
--- /dev/null
+config ISA_BUS
+ bool
+
+config APM
+ bool
+
+config I82378
+ bool
+ select ISA_BUS
+ select I8259
+ select I8254
+ select I82374
+ select MC146818RTC
+
+config PC87312
+ bool
+ select ISA_BUS
+ select I8259
+ select I8254
+ select I8257
+ select MC146818RTC
+ select SERIAL_ISA
+ select PARALLEL
+ select FDC
+ select IDE_ISA
+
+config PIIX4
+ bool
+ # For historical reasons, SuperIO devices are created in the board
+ # for PIIX4.
+ select ISA_BUS
+
+config VT82C686
+ bool
+ select ISA_BUS
+ select ACPI_SMBUS
+ select SERIAL_ISA
+ select FDC
+
+config SMC37C669
+ bool
+ select ISA_BUS
+ select SERIAL_ISA
+ select PARALLEL
+ select FDC
+
+config LPC_ICH9
+ bool
+ # For historical reasons, SuperIO devices are created in the board
+ # for ICH9.
+ select ISA_BUS
+ select ACPI_SMBUS
+ select ACPI_X86_ICH
--- /dev/null
+config LM32
+ bool
+ select PTIMER
+ select PFLASH_CFI02
+
+config MILKYMIST
+ bool
+ # FIXME: disabling it results in compile-time errors
+ select MILKYMIST_TMU2 if OPENGL && X11
+ select PTIMER
+ select PFLASH_CFI01
+ select FRAMEBUFFER
+ select SD
--- /dev/null
+config AN5206
+ bool
+ select COLDFIRE
+ select PTIMER
+
+config MCF5208
+ bool
+ select COLDFIRE
+ select PTIMER
--- /dev/null
+config DIMM
+ bool
+ select MEM_DEVICE
+
+config MEM_DEVICE
+ bool
+
+config NVDIMM
+ bool
+ default y
+ depends on PC
--- /dev/null
+config PETALOGIX_S3ADSP1800
+ bool
+ select PFLASH_CFI01
+ select XILINX
+ select XILINX_AXI
+ select XILINX_ETHLITE
+
+config PETALOGIX_ML605
+ bool
+ select PFLASH_CFI01
+ select SERIAL
+ select SSI_M25P80
+ select XILINX
+ select XILINX_AXI
+ select XILINX_ETHLITE
+ select XILINX_SPI
+
+config XLNX_ZYNQMP_PMU
+ bool
+ select XLNX_ZYNQMP
--- /dev/null
+config R4K
+ bool
+
+config MALTA
+ bool
+
+config MIPSSIM
+ bool
+
+config JAZZ
+ bool
+
+config FULONG
+ bool
+
+config MIPS_CPS
+ bool
+ select PTIMER
+
+config MIPS_BOSTON
+ bool
--- /dev/null
+config APPLESMC
+ bool
+ depends on ISA_BUS
+
+config MAX111X
+ bool
+
+config TMP105
+ bool
+ depends on I2C
+
+config TMP421
+ bool
+ depends on I2C
+
+config ISA_DEBUG
+ bool
+ depends on ISA_BUS
+
+config SGA
+ bool
+ depends on ISA_BUS
+
+config ISA_TESTDEV
+ bool
+ default y if TEST_DEVICES
+ depends on ISA_BUS
+
+config PCI_TESTDEV
+ bool
+ default y if TEST_DEVICES
+ depends on PCI
+
+config EDU
+ bool
+ default y if TEST_DEVICES
+ depends on PCI
+
+config PCA9552
+ bool
+ depends on I2C
+
+config PL310
+ bool
+
+config INTEGRATOR_DEBUG
+ bool
+
+config A9SCU
+ bool
+
+config ARM11SCU
+ bool
+
+config MOS6522
+ bool
+
+config MACIO
+ bool
+ select CUDA
+ select ESCC
+ select IDE_MACIO
+ select MAC_DBDMA
+ select MAC_NVRAM
+ select MOS6522
+
+config IVSHMEM_DEVICE
+ bool
+ default y if PCI_DEVICES
+ depends on PCI && LINUX && IVSHMEM
+
+config ECCMEMCTL
+ bool
+ select ECC
+
+config IMX
+ bool
+ select PTIMER
+
+config STM32F2XX_SYSCFG
+ bool
+
+config MIPS_ITU
+ bool
+
+config MPS2_FPGAIO
+ bool
+
+config MPS2_SCC
+ bool
+
+config TZ_MPC
+ bool
+
+config TZ_MSC
+ bool
+
+config TZ_PPC
+ bool
+
+config IOTKIT_SECCTL
+ bool
+
+config IOTKIT_SYSCTL
+ bool
+
+config IOTKIT_SYSINFO
+ bool
+
+config PVPANIC
+ bool
+ depends on ISA_BUS
+
+config AUX
+ bool
+ select I2C
+
+source macio/Kconfig
--- /dev/null
+config CUDA
+ bool
+
+config MAC_PMU
+ bool
+
+config MAC_DBDMA
+ bool
+
+config MACIO_GPIO
+ bool
--- /dev/null
+config MOXIESIM
+ bool
+ select SERIAL
--- /dev/null
+config DP8393X
+ bool
+
+config NE2000_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config EEPRO100_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config PCNET_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select PCNET_COMMON
+
+config PCNET_COMMON
+ bool
+
+config E1000_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config E1000E_PCI_EXPRESS
+ bool
+ default y if PCI_DEVICES
+ depends on PCI_EXPRESS
+
+config RTL8139_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config VMXNET3_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config SMC91C111
+ bool
+
+config LAN9118
+ bool
+ select PTIMER
+
+config NE2000_ISA
+ bool
+ default y
+ depends on ISA_BUS
+ depends on PCI # for NE2000State
+ select NE2000_PCI
+
+config OPENCORES_ETH
+ bool
+
+config XGMAC
+ bool
+
+config MIPSNET
+ bool
+
+config ALLWINNER_EMAC
+ bool
+
+config IMX_FEC
+ bool
+
+config CADENCE
+ bool
+
+config STELLARIS_ENET
+ bool
+
+config LANCE
+ bool
+ select PCNET_COMMON
+
+config SUNHME
+ bool
+
+config FTGMAC100
+ bool
+
+config SUNGEM
+ bool
+ depends on PCI
+
+config COLDFIRE
+ bool
+
+config XILINX_ETHLITE
+ bool
+
+config VIRTIO_NET
+ bool
+ default y
+ depends on VIRTIO
+
+config ETSEC
+ bool
+ select PTIMER
+
+config ROCKER
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config CAN_BUS
+ bool
+
+config CAN_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select CAN_BUS
+
+config CAN_SJA1000
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select CAN_BUS
--- /dev/null
+config NIOS2_10M50
+ bool
+ select NIOS2
+ select SERIAL
+ select ALTERA_TIMER
+
+config NIOS2
+ bool
--- /dev/null
+config DS1225Y
+ bool
+
+config AT24C
+ bool
+ depends on I2C
+
+config MAC_NVRAM
+ bool
--- /dev/null
+config OR1K_SIM
+ bool
+ select SERIAL
+ select OPENCORES_ETH
+ select OMPIC
--- /dev/null
+config PCIE_PORT
+ bool
+ default y if PCI_DEVICES
+ depends on PCI_EXPRESS
+
+config PXB
+ bool
+ default y if Q35
+
+config XIO3130
+ bool
+ default y if PCI_DEVICES
+ depends on PCI_EXPRESS
+
+config IOH3420
+ bool
+ default y if PCI_DEVICES
+ depends on PCI_EXPRESS
+
+config I82801B11
+ bool
+ default y if PCI_DEVICES
+ depends on PCI_EXPRESS
+
+config DEC_PCI
+ bool
+
+config SIMBA
+ bool
--- /dev/null
+config PAM
+ bool
+
+config PREP_PCI
+ select PCI
+ bool
+
+config GRACKLE_PCI
+ select PCI
+ bool
+
+config UNIN_PCI
+ bool
+ select PCI
+ select DEC_PCI
+ select OPENPIC
+
+config PPCE500_PCI
+ select PCI
+ bool
+
+config VERSATILE_PCI
+ select PCI
+ bool
+
+config PCI_SABRE
+ select PCI
+ bool
+
+config PCI_PIIX
+ bool
+ select PCI
+ select PAM
+ select ISA_BUS
+
+config PCI_EXPRESS_Q35
+ bool
+ select PCI_EXPRESS
+ select PAM
+
+config PCI_EXPRESS_GENERIC_BRIDGE
+ bool
+ select PCI_EXPRESS
+
+config PCI_EXPRESS_XILINX
+ bool
+ select PCI_EXPRESS
+
+config PCI_EXPRESS_DESIGNWARE
+ bool
+ select PCI_EXPRESS
--- /dev/null
+config PCI
+ bool
+
+config PCI_EXPRESS
+ bool
+ select PCI
+
+config PCI_DEVICES
+ bool
common-obj-$(CONFIG_PCI) += msix.o msi.o
common-obj-$(CONFIG_PCI) += shpc.o
common-obj-$(CONFIG_PCI) += slotid_cap.o
-common-obj-$(CONFIG_PCI) += pci_host.o pcie_host.o
-common-obj-$(CONFIG_PCI) += pcie.o pcie_aer.o pcie_port.o
+common-obj-$(CONFIG_PCI) += pci_host.o
+
+# The functions in these modules can be used by devices too. Since we
+# allow plugging PCIe devices into PCI buses, include them even if
+# CONFIG_PCI_EXPRESS=n.
+common-obj-$(CONFIG_PCI) += pcie.o pcie_aer.o
+common-obj-$(CONFIG_PCI_EXPRESS) += pcie_port.o pcie_host.o
common-obj-$(call lnot,$(CONFIG_PCI)) += pci-stub.o
common-obj-$(CONFIG_ALL) += pci-stub.o
--- /dev/null
+config PCMCIA
+ bool
--- /dev/null
+config PSERIES
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select DIMM
+ select PCI
+ select SPAPR_VSCSI
+ select VFIO if LINUX # needed by spapr_pci_vfio.c
+ select XICS_SPAPR
+ select XIVE_SPAPR
+
+config SPAPR_RNG
+ bool
+ default y
+ depends on PSERIES
+
+config POWERNV
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select ISA_IPMI_BT
+ select IPMI_LOCAL
+ select ISA_BUS
+ select MC146818RTC
+ select XICS
+ select XIVE
+
+config PPC405
+ bool
+ select M48T59
+ select PFLASH_CFI02
+ select PPC4XX
+ select SERIAL
+
+config PPC440
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select PCI_EXPRESS
+ select PPC4XX
+ select SERIAL
+
+config PPC4XX
+ bool
+ select BITBANG_I2C
+ select PCI
+
+config SAM460EX
+ bool
+ select PFLASH_CFI01
+ select IDE_SII3112
+ select M41T80
+ select PPC440
+ select SERIAL
+ select SM501
+ select SMBUS_EEPROM
+ select USB_EHCI_SYSBUS
+ select USB_OHCI
+
+config PREP
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select CS4231A
+ select PREP_PCI
+ select I82374
+ select I82378
+ select LSI_SCSI_PCI
+ select M48T59
+ select PC87312
+ select RS6000_MC
+
+config RS6000_MC
+ bool
+
+config MAC_OLDWORLD
+ bool
+ imply PCI_DEVICES
+ imply SUNGEM
+ imply TEST_DEVICES
+ select ADB
+ select GRACKLE_PCI
+ select HEATHROW_PIC
+ select MACIO
+
+config MAC_NEWWORLD
+ bool
+ imply PCI_DEVICES
+ imply SUNGEM
+ imply TEST_DEVICES
+ select ADB
+ select MACIO
+ select MACIO_GPIO
+ select MAC_PMU
+ select UNIN_PCI
+
+config E500
+ bool
+ imply AT24C
+ select ETSEC
+ select OPENPIC
+ select PLATFORM_BUS
+ select PPCE500_PCI
+ select SERIAL
+
+config VIRTEX
+ bool
+ select PFLASH_CFI01
+ select SERIAL
+ select XILINX
+ select XILINX_ETHLITE
+
+config XIVE
+ bool
+ depends on POWERNV || PSERIES
+
+config XIVE_SPAPR
+ bool
+ default y
+ depends on PSERIES
+ select XIVE
--- /dev/null
+config HTIF
+ bool
+
+config HART
+ bool
+
+config SIFIVE
+ bool
+
+config SIFIVE_E
+ bool
+ select HART
+ select SIFIVE
+
+config SIFIVE_U
+ bool
+ select CADENCE
+ select HART
+ select SIFIVE
+
+config SPIKE
+ bool
+ select HART
+ select HTIF
+ select SIFIVE
+
+config RISCV_VIRT
+ bool
+ select HART
+ select SERIAL
+ select VIRTIO_MMIO
+ select PCI_EXPRESS_GENERIC_BRIDGE
+ select SIFIVE
--- /dev/null
+config S390_CCW_VIRTIO
+ bool
+ imply VIRTIO_PCI
+ imply TERMINAL3270
+ imply VFIO_AP
+ imply VFIO_CCW
+ imply WDT_DIAG288
+ select PCI
+ select S390_FLIC
+ select SCLPCONSOLE
+ select VIRTIO_CCW
obj-y += ipl.o
obj-y += css.o
obj-$(CONFIG_S390_CCW_VIRTIO) += s390-virtio-ccw.o
-obj-y += 3270-ccw.o
+obj-$(CONFIG_TERMINAL3270) += 3270-ccw.o
+ifeq ($(CONFIG_VIRTIO_CCW),y)
obj-y += virtio-ccw.o
obj-$(CONFIG_VIRTIO_SERIAL) += virtio-ccw-serial.o
obj-$(CONFIG_VIRTIO_BALLOON) += virtio-ccw-balloon.o
obj-$(CONFIG_VIRTIO_BLK) += virtio-ccw-blk.o
obj-$(call land,$(CONFIG_VIRTIO_9P),$(CONFIG_VIRTFS)) += virtio-ccw-9p.o
obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock-ccw.o
+endif
obj-y += css-bridge.o
obj-y += ccw-device.o
obj-y += s390-pci-bus.o s390-pci-inst.o
--- /dev/null
+config SCSI
+ bool
+
+config LSI_SCSI_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SCSI
+
+config MPTSAS_SCSI_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SCSI
+
+config MEGASAS_SCSI_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SCSI
+
+config VMW_PVSCSI_SCSI_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SCSI
+
+config ESP
+ bool
+ select SCSI
+
+config ESP_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select ESP
+
+config SPAPR_VSCSI
+ bool
+ default y
+ depends on PSERIES
+ select SCSI
+
+config VIRTIO_SCSI
+ bool
+ default y
+ depends on VIRTIO
+ select SCSI
+
+config VHOST_USER_SCSI
+ bool
+ # Only PCI devices are provided for now
+ default y if VIRTIO_PCI
+ depends on VIRTIO && VHOST_USER && LINUX
common-obj-$(CONFIG_VMW_PVSCSI_SCSI_PCI) += vmw_pvscsi.o
common-obj-$(CONFIG_ESP) += esp.o
common-obj-$(CONFIG_ESP_PCI) += esp-pci.o
-obj-$(CONFIG_PSERIES) += spapr_vscsi.o
+obj-$(CONFIG_SPAPR_VSCSI) += spapr_vscsi.o
ifeq ($(CONFIG_VIRTIO_SCSI),y)
obj-y += virtio-scsi.o virtio-scsi-dataplane.o
--- /dev/null
+config PL181
+ bool
+ select SD
+
+config SSI_SD
+ bool
+ depends on SSI
+ select SD
+
+config SD
+ bool
+
+config SDHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select SD
--- /dev/null
+config R2D
+ bool
+ imply PCI_DEVICES
+ imply TEST_DEVICES
+ select I82378 if TEST_DEVICES
+ select IDE_MMIO
+ select PFLASH_CFI02
+ select USB_OHCI
+ select PCI
+ select SM501
+ select SH4
+
+config SHIX
+ bool
+ select SH7750
+ select SH4
+
+config SH7750
+ bool
+
+config SH4
+ bool
+ select PTIMER
--- /dev/null
+config SMBIOS
+ bool
--- /dev/null
+config SUN4M
+ bool
+ imply TCX
+ imply CG3
+ select CS4231
+ select ECCMEMCTL
+ select EMPTY_SLOT
+ select ESCC
+ select ESP
+ select FDC
+ select SLAVIO
+ select LANCE
+ select M48T59
+ select STP2000
+
+config LEON3
+ bool
+ select GRLIB
+
+config GRLIB
+ bool
+ select PTIMER
+
+config SLAVIO
+ bool
+ select PTIMER
--- /dev/null
+config SUN4U
+ bool
+ imply PCI_DEVICES
+ imply SUNHME
+ imply TEST_DEVICES
+ select M48T59
+ select ISA_BUS
+ select FDC
+ select SERIAL_ISA
+ select PCI_SABRE
+ select IDE_CMD646
+ select PARALLEL
+ select PCKBD
+ select SIMBA
+
+config NIAGARA
+ bool
+ select EMPTY_SLOT
+ select SUN4V_RTC
--- /dev/null
+config PL022
+ bool
+ select SSI
+
+config SSI
+ bool
+
+config XILINX_SPI
+ bool
+ select SSI
+
+config XILINX_SPIPS
+ bool
+ select SSI
+
+config STM32F2XX_SPI
+ bool
+ select SSI
--- /dev/null
+config ARM_TIMER
+ bool
+ select PTIMER
+
+config ARM_MPTIMER
+ bool
+ select PTIMER
+
+config A9_GTIMER
+ bool
+
+config DS1338
+ bool
+ depends on I2C
+
+config HPET
+ bool
+ default y if PC
+
+config I8254
+ bool
+
+config M41T80
+ bool
+ depends on I2C
+
+config M48T59
+ bool
+
+config PL031
+ bool
+
+config TWL92230
+ bool
+ depends on I2C
+
+config XLNX_ZYNQMP
+ bool
+
+config ALTERA_TIMER
+ bool
+ select PTIMER
+
+config MC146818RTC
+ bool
+
+config ALLWINNER_A10_PIT
+ bool
+ select PTIMER
+
+config STM32F2XX_TIMER
+ bool
+
+config SUN4V_RTC
+ bool
+
+config CMSDK_APB_TIMER
+ bool
+ select PTIMER
+
+config CMSDK_APB_DUALTIMER
+ bool
+ select PTIMER
--- /dev/null
+config TPMDEV
+ bool
+ depends on TPM
+
+config TPM_TIS
+ bool
+ depends on TPM && ISA_BUS
+ select TPMDEV
+
+config TPM_CRB
+ bool
+ depends on TPM && PC
+ select TPMDEV
+
+config TPM_PASSTHROUGH
+ bool
+ default y
+ # FIXME: should check for x86 host as well
+ depends on TPMDEV && LINUX
+
+config TPM_EMULATOR
+ bool
+ default y
+ depends on TPMDEV
--- /dev/null
+config TRICORE
+ bool
--- /dev/null
+config PUV3
+ bool
+ select ISA_BUS
+ select PCKBD
+ select PTIMER
--- /dev/null
+config USB
+ bool
+
+config USB_UHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select USB
+
+config USB_OHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select USB
+
+config USB_EHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select USB
+
+config USB_EHCI_SYSBUS
+ bool
+ select USB
+
+config USB_XHCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select USB
+
+config USB_XHCI_NEC
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select USB
+
+config USB_MUSB
+ bool
+ select USB
+
+config TUSB6010
+ bool
+ select USB_MUSB
+
+config USB_TABLET_WACOM
+ bool
+ default y
+ depends on USB
+
+config USB_STORAGE_BOT
+ bool
+ default y
+ depends on USB
+ select SCSI
+
+config USB_STORAGE_UAS
+ bool
+ default y
+ depends on USB
+ select SCSI
+
+config USB_AUDIO
+ bool
+ default y
+ depends on USB
+
+config USB_SERIAL
+ bool
+ default y
+ depends on USB
+
+config USB_NETWORK
+ bool
+ default y
+ depends on USB
+
+config USB_BLUETOOTH
+ bool
+ default y
+ depends on USB
+
+config USB_SMARTCARD
+ bool
+ default y
+ depends on USB
+
+config USB_STORAGE_MTP
+ bool
+ default y
+ depends on USB
common-obj-$(CONFIG_USB_UHCI) += hcd-uhci.o
common-obj-$(CONFIG_USB_OHCI) += hcd-ohci.o
common-obj-$(CONFIG_USB_EHCI) += hcd-ehci.o hcd-ehci-pci.o
-common-obj-$(CONFIG_USB_EHCI_SYSBUS) += hcd-ehci-sysbus.o
+common-obj-$(CONFIG_USB_EHCI_SYSBUS) += hcd-ehci.o hcd-ehci-sysbus.o
common-obj-$(CONFIG_USB_XHCI) += hcd-xhci.o
common-obj-$(CONFIG_USB_XHCI_NEC) += hcd-xhci-nec.o
common-obj-$(CONFIG_USB_MUSB) += hcd-musb.o
--- /dev/null
+config VFIO
+ bool
+ depends on LINUX
+
+config VFIO_PCI
+ bool
+ select VFIO
+ depends on LINUX
+
+config VFIO_CCW
+ bool
+ default y
+ select VFIO
+ depends on LINUX && S390_CCW_VIRTIO
+
+config VFIO_PLATFORM
+ bool
+ default y
+ select VFIO
+ depends on LINUX && PLATFORM_BUS
+
+config VFIO_XGMAC
+ bool
+ default y
+ depends on VFIO_PLATFORM
+
+config VFIO_AMD_XGBE
+ bool
+ default y
+ depends on VFIO_PLATFORM
+
+config VFIO_AP
+ bool
+ default y
+ select VFIO
+ depends on LINUX && S390_CCW_VIRTIO
--- /dev/null
+config VIRTIO
+ bool
+
+config VIRTIO_RNG
+ bool
+ default y
+ depends on VIRTIO
+
+config VIRTIO_PCI
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+ select VIRTIO
+
+config VIRTIO_MMIO
+ bool
+ select VIRTIO
+
+config VIRTIO_CCW
+ bool
+ select VIRTIO
+
+config VIRTIO_BALLOON
+ bool
+ default y
+ depends on VIRTIO
+
+config VIRTIO_CRYPTO
+ bool
+ default y
+ depends on VIRTIO
obj-$(CONFIG_VIRTIO_NET) += virtio-net-pci.o
obj-$(CONFIG_VIRTIO_SERIAL) += virtio-serial-pci.o
endif
+else
+common-obj-y += vhost-stub.o
endif
common-obj-$(CONFIG_ALL) += vhost-stub.o
--- /dev/null
+config CMSDK_APB_WATCHDOG
+ bool
+ select PTIMER
+
+config WDT_IB6300ESB
+ bool
+ default y if PCI_DEVICES
+ depends on PCI
+
+config WDT_IB700
+ bool
+ default y
+ depends on ISA_BUS
+
+config WDT_DIAG288
+ bool
--- /dev/null
+config XTENSA_SIM
+ bool
+
+config XTENSA_XTFPGA
+ bool
+ select OPENCORES_ETH
+ select PFLASH_CFI01
+ select SERIAL
obj-y += pic_cpu.o
obj-y += xtensa_memory.o
obj-$(CONFIG_XTENSA_SIM) += sim.o
-obj-$(CONFIG_XTENSA_FPGA) += xtfpga.o
+obj-$(CONFIG_XTENSA_XTFPGA) += xtfpga.o
#ifndef QEMU_FILE_H
#define QEMU_FILE_H
+int qemu_file_get_error(QEMUFile *f);
+
void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, size_t size);
void qemu_put_byte(QEMUFile *f, int v);
#undef GET_FEATURE
#undef GET_FEATURE_ID
+#define ELF_PLATFORM get_elf_platform()
+
+static const char *get_elf_platform(void)
+{
+ CPUARMState *env = thread_cpu->env_ptr;
+
+#ifdef TARGET_WORDS_BIGENDIAN
+# define END "b"
+#else
+# define END "l"
+#endif
+
+ if (arm_feature(env, ARM_FEATURE_V8)) {
+ return "v8" END;
+ } else if (arm_feature(env, ARM_FEATURE_V7)) {
+ if (arm_feature(env, ARM_FEATURE_M)) {
+ return "v7m" END;
+ } else {
+ return "v7" END;
+ }
+ } else if (arm_feature(env, ARM_FEATURE_V6)) {
+ return "v6" END;
+ } else if (arm_feature(env, ARM_FEATURE_V5)) {
+ return "v5" END;
+ } else {
+ return "v4" END;
+ }
+
+#undef END
+}
+
#else
/* 64 bit ARM definitions */
#define ELF_START_MMAP 0x80000000
#define ELF_ARCH EM_AARCH64
#define ELF_CLASS ELFCLASS64
-#define ELF_PLATFORM "aarch64"
+#ifdef TARGET_WORDS_BIGENDIAN
+# define ELF_PLATFORM "aarch64_be"
+#else
+# define ELF_PLATFORM "aarch64"
+#endif
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
QEMU_IFLA_BR_MCAST_STATS_ENABLED,
QEMU_IFLA_BR_MCAST_IGMP_VERSION,
QEMU_IFLA_BR_MCAST_MLD_VERSION,
+ QEMU_IFLA_BR_VLAN_STATS_PER_PORT,
+ QEMU_IFLA_BR_MULTI_BOOLOPT,
QEMU___IFLA_BR_MAX,
};
case QEMU_IFLA_BR_MCAST_STATS_ENABLED:
case QEMU_IFLA_BR_MCAST_IGMP_VERSION:
case QEMU_IFLA_BR_MCAST_MLD_VERSION:
+ case QEMU_IFLA_BR_VLAN_STATS_PER_PORT:
break;
/* uint16_t */
case QEMU_IFLA_BR_PRIORITY:
case QEMU_IFLA_BRPORT_ROOT_ID:
case QEMU_IFLA_BRPORT_BRIDGE_ID:
break;
+ /* br_boolopt_multi { uint32_t, uint32_t } */
+ case QEMU_IFLA_BR_MULTI_BOOLOPT:
+ u32 = NLA_DATA(nlattr);
+ u32[0] = tswap32(u32[0]); /* optval */
+ u32[1] = tswap32(u32[1]); /* optmask */
+ break;
default:
gemu_log("Unknown QEMU_IFLA_BRPORT type %d\n", nlattr->nla_type);
break;
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
break;
}
+ case EXCP_DEBUG:
+ info.si_signo = TARGET_SIGTRAP;
+ info.si_errno = 0;
+ info.si_code = TARGET_TRAP_BRKPT;
+ queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ break;
case 0xaa:
switch (env->regs[R_PC]) {
/*case 0x1000:*/ /* TODO:__kuser_helper_version */
}
#endif
+#ifdef TARGET_NR_chroot
+static void
+print_chroot(const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ print_syscall_prologue(name);
+ print_string(arg0, 1);
+ print_syscall_epilogue(name);
+}
+#endif
+
#ifdef TARGET_NR_chmod
static void
print_chmod(const struct syscallname *name,
{ TARGET_NR_chown32, "chown32" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_chroot
-{ TARGET_NR_chroot, "chroot" , NULL, NULL, NULL },
+{ TARGET_NR_chroot, "chroot" , NULL, print_chroot, NULL },
#endif
#ifdef TARGET_NR_clock_adjtime
{ TARGET_NR_clock_adjtime, "clock_adjtime" , NULL, print_clock_adjtime, NULL },
}
if (!is_error(ret)) {
msgp->msg_namelen = tswap32(msg.msg_namelen);
+ msgp->msg_flags = tswap32(msg.msg_flags);
if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
msg.msg_name, msg.msg_namelen);
static abi_long do_accept4(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr, int flags)
{
- socklen_t addrlen;
+ socklen_t addrlen, ret_addrlen;
void *addr;
abi_long ret;
int host_flags;
addr = alloca(addrlen);
- ret = get_errno(safe_accept4(fd, addr, &addrlen, host_flags));
+ ret_addrlen = addrlen;
+ ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
if (!is_error(ret)) {
- host_to_target_sockaddr(target_addr, addr, addrlen);
- if (put_user_u32(addrlen, target_addrlen_addr))
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
ret = -TARGET_EFAULT;
+ }
}
return ret;
}
static abi_long do_getpeername(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr)
{
- socklen_t addrlen;
+ socklen_t addrlen, ret_addrlen;
void *addr;
abi_long ret;
addr = alloca(addrlen);
- ret = get_errno(getpeername(fd, addr, &addrlen));
+ ret_addrlen = addrlen;
+ ret = get_errno(getpeername(fd, addr, &ret_addrlen));
if (!is_error(ret)) {
- host_to_target_sockaddr(target_addr, addr, addrlen);
- if (put_user_u32(addrlen, target_addrlen_addr))
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
ret = -TARGET_EFAULT;
+ }
}
return ret;
}
static abi_long do_getsockname(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr)
{
- socklen_t addrlen;
+ socklen_t addrlen, ret_addrlen;
void *addr;
abi_long ret;
addr = alloca(addrlen);
- ret = get_errno(getsockname(fd, addr, &addrlen));
+ ret_addrlen = addrlen;
+ ret = get_errno(getsockname(fd, addr, &ret_addrlen));
if (!is_error(ret)) {
- host_to_target_sockaddr(target_addr, addr, addrlen);
- if (put_user_u32(addrlen, target_addrlen_addr))
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
ret = -TARGET_EFAULT;
+ }
}
return ret;
}
abi_ulong target_addr,
abi_ulong target_addrlen)
{
- socklen_t addrlen;
+ socklen_t addrlen, ret_addrlen;
void *addr;
void *host_msg;
abi_long ret;
goto fail;
}
addr = alloca(addrlen);
+ ret_addrlen = addrlen;
ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
- addr, &addrlen));
+ addr, &ret_addrlen));
} else {
addr = NULL; /* To keep compiler quiet. */
+ addrlen = 0; /* To keep compiler quiet. */
ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
}
if (!is_error(ret)) {
}
}
if (target_addr) {
- host_to_target_sockaddr(target_addr, addr, addrlen);
- if (put_user_u32(addrlen, target_addrlen)) {
+ host_to_target_sockaddr(target_addr, addr,
+ MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen)) {
ret = -TARGET_EFAULT;
goto fail;
}
const int *dst_offsets, *src_offsets;
int target_size;
void *argptr;
- abi_ulong *target_rt_dev_ptr;
- unsigned long *host_rt_dev_ptr;
+ abi_ulong *target_rt_dev_ptr = NULL;
+ unsigned long *host_rt_dev_ptr = NULL;
abi_long ret;
int i;
unlock_user(argptr, arg, 0);
ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+
+ assert(host_rt_dev_ptr != NULL);
+ assert(target_rt_dev_ptr != NULL);
if (*host_rt_dev_ptr != 0) {
unlock_user((void *)*host_rt_dev_ptr,
*target_rt_dev_ptr, 0);
_exit(arg1);
return 0; /* avoid warning */
case TARGET_NR_read:
- if (arg3 == 0) {
- return 0;
+ if (arg2 == 0 && arg3 == 0) {
+ return get_errno(safe_read(arg1, 0, 0));
} else {
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
return -TARGET_EFAULT;
void qemu_file_reset_rate_limit(QEMUFile *f);
void qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate);
int64_t qemu_file_get_rate_limit(QEMUFile *f);
-int qemu_file_get_error(QEMUFile *f);
void qemu_file_set_error(QEMUFile *f, int ret);
int qemu_file_shutdown(QEMUFile *f);
QEMUFile *qemu_file_get_return_path(QEMUFile *f);
common-obj-$(call land,$(call lnot,$(CONFIG_VIRTIO_NET)),$(CONFIG_VHOST_NET_USER)) += vhost-user-stub.o
common-obj-$(CONFIG_ALL) += vhost-user-stub.o
common-obj-$(CONFIG_SLIRP) += slirp.o
+slirp.o-cflags := $(SLIRP_CFLAGS)
+slirp.o-libs := $(SLIRP_LIBS)
common-obj-$(CONFIG_VDE) += vde.o
common-obj-$(CONFIG_NETMAP) += netmap.o
common-obj-y += filter.o
#include "monitor/monitor.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
-#include "slirp/libslirp.h"
+#include <libslirp.h>
#include "chardev/char-fe.h"
#include "sysemu/sysemu.h"
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "util.h"
+#include "migration/register.h"
+#include "migration/qemu-file-types.h"
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
{
g_slist_free_full(s->fwd, slirp_free_fwd);
main_loop_poll_remove_notifier(&s->poll_notifier);
+ unregister_savevm(NULL, "slirp", s->slirp);
slirp_cleanup(s->slirp);
if (s->exit_notifier.notify) {
qemu_remove_exit_notifier(&s->exit_notifier);
}
}
+static ssize_t
+net_slirp_stream_read(void *buf, size_t size, void *opaque)
+{
+ QEMUFile *f = opaque;
+
+ return qemu_get_buffer(f, buf, size);
+}
+
+static ssize_t
+net_slirp_stream_write(const void *buf, size_t size, void *opaque)
+{
+ QEMUFile *f = opaque;
+
+ qemu_put_buffer(f, buf, size);
+ if (qemu_file_get_error(f)) {
+ return -1;
+ }
+
+ return size;
+}
+
+static int net_slirp_state_load(QEMUFile *f, void *opaque, int version_id)
+{
+ Slirp *slirp = opaque;
+
+ return slirp_state_load(slirp, version_id, net_slirp_stream_read, f);
+}
+
+static void net_slirp_state_save(QEMUFile *f, void *opaque)
+{
+ Slirp *slirp = opaque;
+
+ slirp_state_save(slirp, net_slirp_stream_write, f);
+}
+
+static SaveVMHandlers savevm_slirp_state = {
+ .save_state = net_slirp_state_save,
+ .load_state = net_slirp_state_load,
+};
+
static int net_slirp_init(NetClientState *peer, const char *model,
const char *name, int restricted,
bool ipv4, const char *vnetwork, const char *vhost,
&slirp_cb, s);
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
+ /*
+ * Make sure the current bitstream version of slirp is 4, to avoid
+ * QEMU migration incompatibilities, if upstream slirp bumped the
+ * version.
+ *
+ * FIXME: use bitfields of features? teach libslirp to save with
+ * specific version?
+ */
+ g_assert(slirp_state_version() == 4);
+ register_savevm_live(NULL, "slirp", 0, slirp_state_version(),
+ &savevm_slirp_state, s->slirp);
+
s->poll_notifier.notify = net_slirp_poll_notify;
main_loop_poll_add_notifier(&s->poll_notifier);
static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp)
{
+ /* TODO: IPv6 */
struct in_addr server = { .s_addr = 0 };
struct GuestFwd *fwd;
const char *p;
--- /dev/null
+# QEMU library
+#
+# Copyright (C) 2015-2016 Red Hat Inc.
+# Copyright (C) 2012 IBM Corp.
+#
+# Authors:
+# Fam Zheng <famz@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+#
+# Based on qmp.py.
+#
+
+import errno
+import logging
+import os
+import subprocess
+import re
+import shutil
+import socket
+import tempfile
+
+from . import qmp
+
+
+LOG = logging.getLogger(__name__)
+
+# Mapping host architecture to any additional architectures it can
+# support which often includes its 32 bit cousin.
+ADDITIONAL_ARCHES = {
+ "x86_64" : "i386",
+ "aarch64" : "armhf"
+}
+
+def kvm_available(target_arch=None):
+ host_arch = os.uname()[4]
+ if target_arch and target_arch != host_arch:
+ if target_arch != ADDITIONAL_ARCHES.get(host_arch):
+ return False
+ return os.access("/dev/kvm", os.R_OK | os.W_OK)
+
+
+#: Maps machine types to the preferred console device types
+CONSOLE_DEV_TYPES = {
+ r'^clipper$': 'isa-serial',
+ r'^malta': 'isa-serial',
+ r'^(pc.*|q35.*|isapc)$': 'isa-serial',
+ r'^(40p|powernv|prep)$': 'isa-serial',
+ r'^pseries.*': 'spapr-vty',
+ r'^s390-ccw-virtio.*': 'sclpconsole',
+ }
+
+
+class QEMUMachineError(Exception):
+ """
+ Exception called when an error in QEMUMachine happens.
+ """
+
+
+class QEMUMachineAddDeviceError(QEMUMachineError):
+ """
+ Exception raised when a request to add a device can not be fulfilled
+
+ The failures are caused by limitations, lack of information or conflicting
+ requests on the QEMUMachine methods. This exception does not represent
+ failures reported by the QEMU binary itself.
+ """
+
+class MonitorResponseError(qmp.QMPError):
+ """
+ Represents erroneous QMP monitor reply
+ """
+ def __init__(self, reply):
+ try:
+ desc = reply["error"]["desc"]
+ except KeyError:
+ desc = reply
+ super(MonitorResponseError, self).__init__(desc)
+ self.reply = reply
+
+
+class QEMUMachine(object):
+ """
+ A QEMU VM
+
+ Use this object as a context manager to ensure the QEMU process terminates::
+
+ with VM(binary) as vm:
+ ...
+ # vm is guaranteed to be shut down here
+ """
+
+ def __init__(self, binary, args=None, wrapper=None, name=None,
+ test_dir="/var/tmp", monitor_address=None,
+ socket_scm_helper=None):
+ '''
+ Initialize a QEMUMachine
+
+ @param binary: path to the qemu binary
+ @param args: list of extra arguments
+ @param wrapper: list of arguments used as prefix to qemu binary
+ @param name: prefix for socket and log file names (default: qemu-PID)
+ @param test_dir: where to create socket and log file
+ @param monitor_address: address for QMP monitor
+ @param socket_scm_helper: helper program, required for send_fd_scm()
+ @note: Qemu process is not started until launch() is used.
+ '''
+ if args is None:
+ args = []
+ if wrapper is None:
+ wrapper = []
+ if name is None:
+ name = "qemu-%d" % os.getpid()
+ self._name = name
+ self._monitor_address = monitor_address
+ self._vm_monitor = None
+ self._qemu_log_path = None
+ self._qemu_log_file = None
+ self._popen = None
+ self._binary = binary
+ self._args = list(args) # Force copy args in case we modify them
+ self._wrapper = wrapper
+ self._events = []
+ self._iolog = None
+ self._socket_scm_helper = socket_scm_helper
+ self._qmp = None
+ self._qemu_full_args = None
+ self._test_dir = test_dir
+ self._temp_dir = None
+ self._launched = False
+ self._machine = None
+ self._console_device_type = None
+ self._console_address = None
+ self._console_socket = None
+
+ # just in case logging wasn't configured by the main script:
+ logging.basicConfig()
+
+ def __enter__(self):
+ return self
+
+ def __exit__(self, exc_type, exc_val, exc_tb):
+ self.shutdown()
+ return False
+
+ # This can be used to add an unused monitor instance.
+ def add_monitor_null(self):
+ self._args.append('-monitor')
+ self._args.append('null')
+
+ def add_fd(self, fd, fdset, opaque, opts=''):
+ """
+ Pass a file descriptor to the VM
+ """
+ options = ['fd=%d' % fd,
+ 'set=%d' % fdset,
+ 'opaque=%s' % opaque]
+ if opts:
+ options.append(opts)
+
+ # This did not exist before 3.4, but since then it is
+ # mandatory for our purpose
+ if hasattr(os, 'set_inheritable'):
+ os.set_inheritable(fd, True)
+
+ self._args.append('-add-fd')
+ self._args.append(','.join(options))
+ return self
+
+ # Exactly one of fd and file_path must be given.
+ # (If it is file_path, the helper will open that file and pass its
+ # own fd)
+ def send_fd_scm(self, fd=None, file_path=None):
+ # In iotest.py, the qmp should always use unix socket.
+ assert self._qmp.is_scm_available()
+ if self._socket_scm_helper is None:
+ raise QEMUMachineError("No path to socket_scm_helper set")
+ if not os.path.exists(self._socket_scm_helper):
+ raise QEMUMachineError("%s does not exist" %
+ self._socket_scm_helper)
+
+ # This did not exist before 3.4, but since then it is
+ # mandatory for our purpose
+ if hasattr(os, 'set_inheritable'):
+ os.set_inheritable(self._qmp.get_sock_fd(), True)
+ if fd is not None:
+ os.set_inheritable(fd, True)
+
+ fd_param = ["%s" % self._socket_scm_helper,
+ "%d" % self._qmp.get_sock_fd()]
+
+ if file_path is not None:
+ assert fd is None
+ fd_param.append(file_path)
+ else:
+ assert fd is not None
+ fd_param.append(str(fd))
+
+ devnull = open(os.path.devnull, 'rb')
+ proc = subprocess.Popen(fd_param, stdin=devnull, stdout=subprocess.PIPE,
+ stderr=subprocess.STDOUT, close_fds=False)
+ output = proc.communicate()[0]
+ if output:
+ LOG.debug(output)
+
+ return proc.returncode
+
+ @staticmethod
+ def _remove_if_exists(path):
+ """
+ Remove file object at path if it exists
+ """
+ try:
+ os.remove(path)
+ except OSError as exception:
+ if exception.errno == errno.ENOENT:
+ return
+ raise
+
+ def is_running(self):
+ return self._popen is not None and self._popen.poll() is None
+
+ def exitcode(self):
+ if self._popen is None:
+ return None
+ return self._popen.poll()
+
+ def get_pid(self):
+ if not self.is_running():
+ return None
+ return self._popen.pid
+
+ def _load_io_log(self):
+ if self._qemu_log_path is not None:
+ with open(self._qemu_log_path, "r") as iolog:
+ self._iolog = iolog.read()
+
+ def _base_args(self):
+ if isinstance(self._monitor_address, tuple):
+ moncdev = "socket,id=mon,host=%s,port=%s" % (
+ self._monitor_address[0],
+ self._monitor_address[1])
+ else:
+ moncdev = 'socket,id=mon,path=%s' % self._vm_monitor
+ args = ['-chardev', moncdev,
+ '-mon', 'chardev=mon,mode=control',
+ '-display', 'none', '-vga', 'none']
+ if self._machine is not None:
+ args.extend(['-machine', self._machine])
+ if self._console_device_type is not None:
+ self._console_address = os.path.join(self._temp_dir,
+ self._name + "-console.sock")
+ chardev = ('socket,id=console,path=%s,server,nowait' %
+ self._console_address)
+ device = '%s,chardev=console' % self._console_device_type
+ args.extend(['-chardev', chardev, '-device', device])
+ return args
+
+ def _pre_launch(self):
+ self._temp_dir = tempfile.mkdtemp(dir=self._test_dir)
+ if self._monitor_address is not None:
+ self._vm_monitor = self._monitor_address
+ else:
+ self._vm_monitor = os.path.join(self._temp_dir,
+ self._name + "-monitor.sock")
+ self._qemu_log_path = os.path.join(self._temp_dir, self._name + ".log")
+ self._qemu_log_file = open(self._qemu_log_path, 'wb')
+
+ self._qmp = qmp.QEMUMonitorProtocol(self._vm_monitor,
+ server=True)
+
+ def _post_launch(self):
+ self._qmp.accept()
+
+ def _post_shutdown(self):
+ if self._qemu_log_file is not None:
+ self._qemu_log_file.close()
+ self._qemu_log_file = None
+
+ self._qemu_log_path = None
+
+ if self._console_socket is not None:
+ self._console_socket.close()
+ self._console_socket = None
+
+ if self._temp_dir is not None:
+ shutil.rmtree(self._temp_dir)
+ self._temp_dir = None
+
+ def launch(self):
+ """
+ Launch the VM and make sure we cleanup and expose the
+ command line/output in case of exception
+ """
+
+ if self._launched:
+ raise QEMUMachineError('VM already launched')
+
+ self._iolog = None
+ self._qemu_full_args = None
+ try:
+ self._launch()
+ self._launched = True
+ except:
+ self.shutdown()
+
+ LOG.debug('Error launching VM')
+ if self._qemu_full_args:
+ LOG.debug('Command: %r', ' '.join(self._qemu_full_args))
+ if self._iolog:
+ LOG.debug('Output: %r', self._iolog)
+ raise
+
+ def _launch(self):
+ """
+ Launch the VM and establish a QMP connection
+ """
+ devnull = open(os.path.devnull, 'rb')
+ self._pre_launch()
+ self._qemu_full_args = (self._wrapper + [self._binary] +
+ self._base_args() + self._args)
+ LOG.debug('VM launch command: %r', ' '.join(self._qemu_full_args))
+ self._popen = subprocess.Popen(self._qemu_full_args,
+ stdin=devnull,
+ stdout=self._qemu_log_file,
+ stderr=subprocess.STDOUT,
+ shell=False,
+ close_fds=False)
+ self._post_launch()
+
+ def wait(self):
+ """
+ Wait for the VM to power off
+ """
+ self._popen.wait()
+ self._qmp.close()
+ self._load_io_log()
+ self._post_shutdown()
+
+ def shutdown(self):
+ """
+ Terminate the VM and clean up
+ """
+ if self.is_running():
+ try:
+ self._qmp.cmd('quit')
+ self._qmp.close()
+ except:
+ self._popen.kill()
+ self._popen.wait()
+
+ self._load_io_log()
+ self._post_shutdown()
+
+ exitcode = self.exitcode()
+ if exitcode is not None and exitcode < 0:
+ msg = 'qemu received signal %i: %s'
+ if self._qemu_full_args:
+ command = ' '.join(self._qemu_full_args)
+ else:
+ command = ''
+ LOG.warn(msg, -exitcode, command)
+
+ self._launched = False
+
+ def qmp(self, cmd, conv_keys=True, **args):
+ """
+ Invoke a QMP command and return the response dict
+ """
+ qmp_args = dict()
+ for key, value in args.items():
+ if conv_keys:
+ qmp_args[key.replace('_', '-')] = value
+ else:
+ qmp_args[key] = value
+
+ return self._qmp.cmd(cmd, args=qmp_args)
+
+ def command(self, cmd, conv_keys=True, **args):
+ """
+ Invoke a QMP command.
+ On success return the response dict.
+ On failure raise an exception.
+ """
+ reply = self.qmp(cmd, conv_keys, **args)
+ if reply is None:
+ raise qmp.QMPError("Monitor is closed")
+ if "error" in reply:
+ raise MonitorResponseError(reply)
+ return reply["return"]
+
+ def get_qmp_event(self, wait=False):
+ """
+ Poll for one queued QMP events and return it
+ """
+ if len(self._events) > 0:
+ return self._events.pop(0)
+ return self._qmp.pull_event(wait=wait)
+
+ def get_qmp_events(self, wait=False):
+ """
+ Poll for queued QMP events and return a list of dicts
+ """
+ events = self._qmp.get_events(wait=wait)
+ events.extend(self._events)
+ del self._events[:]
+ self._qmp.clear_events()
+ return events
+
+ def event_wait(self, name, timeout=60.0, match=None):
+ """
+ Wait for specified timeout on named event in QMP; optionally filter
+ results by match.
+
+ The 'match' is checked to be a recursive subset of the 'event'; skips
+ branch processing on match's value None
+ {"foo": {"bar": 1}} matches {"foo": None}
+ {"foo": {"bar": 1}} does not matches {"foo": {"baz": None}}
+ """
+ def event_match(event, match=None):
+ if match is None:
+ return True
+
+ for key in match:
+ if key in event:
+ if isinstance(event[key], dict):
+ if not event_match(event[key], match[key]):
+ return False
+ elif event[key] != match[key]:
+ return False
+ else:
+ return False
+
+ return True
+
+ # Search cached events
+ for event in self._events:
+ if (event['event'] == name) and event_match(event, match):
+ self._events.remove(event)
+ return event
+
+ # Poll for new events
+ while True:
+ event = self._qmp.pull_event(wait=timeout)
+ if (event['event'] == name) and event_match(event, match):
+ return event
+ self._events.append(event)
+
+ return None
+
+ def get_log(self):
+ """
+ After self.shutdown or failed qemu execution, this returns the output
+ of the qemu process.
+ """
+ return self._iolog
+
+ def add_args(self, *args):
+ """
+ Adds to the list of extra arguments to be given to the QEMU binary
+ """
+ self._args.extend(args)
+
+ def set_machine(self, machine_type):
+ """
+ Sets the machine type
+
+ If set, the machine type will be added to the base arguments
+ of the resulting QEMU command line.
+ """
+ self._machine = machine_type
+
+ def set_console(self, device_type=None):
+ """
+ Sets the device type for a console device
+
+ If set, the console device and a backing character device will
+ be added to the base arguments of the resulting QEMU command
+ line.
+
+ This is a convenience method that will either use the provided
+ device type, of if not given, it will used the device type set
+ on CONSOLE_DEV_TYPES.
+
+ The actual setting of command line arguments will be be done at
+ machine launch time, as it depends on the temporary directory
+ to be created.
+
+ @param device_type: the device type, such as "isa-serial"
+ @raises: QEMUMachineAddDeviceError if the device type is not given
+ and can not be determined.
+ """
+ if device_type is None:
+ if self._machine is None:
+ raise QEMUMachineAddDeviceError("Can not add a console device:"
+ " QEMU instance without a "
+ "defined machine type")
+ for regex, device in CONSOLE_DEV_TYPES.items():
+ if re.match(regex, self._machine):
+ device_type = device
+ break
+ if device_type is None:
+ raise QEMUMachineAddDeviceError("Can not add a console device:"
+ " no matching console device "
+ "type definition")
+ self._console_device_type = device_type
+
+ @property
+ def console_socket(self):
+ """
+ Returns a socket connected to the console
+ """
+ if self._console_socket is None:
+ self._console_socket = socket.socket(socket.AF_UNIX,
+ socket.SOCK_STREAM)
+ self._console_socket.connect(self._console_address)
+ return self._console_socket
--- /dev/null
+# QEMU Monitor Protocol Python class
+#
+# Copyright (C) 2009, 2010 Red Hat Inc.
+#
+# Authors:
+# Luiz Capitulino <lcapitulino@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+
+import json
+import errno
+import socket
+import logging
+
+
+class QMPError(Exception):
+ pass
+
+
+class QMPConnectError(QMPError):
+ pass
+
+
+class QMPCapabilitiesError(QMPError):
+ pass
+
+
+class QMPTimeoutError(QMPError):
+ pass
+
+
+class QEMUMonitorProtocol(object):
+
+ #: Logger object for debugging messages
+ logger = logging.getLogger('QMP')
+ #: Socket's error class
+ error = socket.error
+ #: Socket's timeout
+ timeout = socket.timeout
+
+ def __init__(self, address, server=False):
+ """
+ Create a QEMUMonitorProtocol class.
+
+ @param address: QEMU address, can be either a unix socket path (string)
+ or a tuple in the form ( address, port ) for a TCP
+ connection
+ @param server: server mode listens on the socket (bool)
+ @raise socket.error on socket connection errors
+ @note No connection is established, this is done by the connect() or
+ accept() methods
+ """
+ self.__events = []
+ self.__address = address
+ self.__sock = self.__get_sock()
+ self.__sockfile = None
+ if server:
+ self.__sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+ self.__sock.bind(self.__address)
+ self.__sock.listen(1)
+
+ def __get_sock(self):
+ if isinstance(self.__address, tuple):
+ family = socket.AF_INET
+ else:
+ family = socket.AF_UNIX
+ return socket.socket(family, socket.SOCK_STREAM)
+
+ def __negotiate_capabilities(self):
+ greeting = self.__json_read()
+ if greeting is None or "QMP" not in greeting:
+ raise QMPConnectError
+ # Greeting seems ok, negotiate capabilities
+ resp = self.cmd('qmp_capabilities')
+ if "return" in resp:
+ return greeting
+ raise QMPCapabilitiesError
+
+ def __json_read(self, only_event=False):
+ while True:
+ data = self.__sockfile.readline()
+ if not data:
+ return
+ resp = json.loads(data)
+ if 'event' in resp:
+ self.logger.debug("<<< %s", resp)
+ self.__events.append(resp)
+ if not only_event:
+ continue
+ return resp
+
+ def __get_events(self, wait=False):
+ """
+ Check for new events in the stream and cache them in __events.
+
+ @param wait (bool): block until an event is available.
+ @param wait (float): If wait is a float, treat it as a timeout value.
+
+ @raise QMPTimeoutError: If a timeout float is provided and the timeout
+ period elapses.
+ @raise QMPConnectError: If wait is True but no events could be
+ retrieved or if some other error occurred.
+ """
+
+ # Check for new events regardless and pull them into the cache:
+ self.__sock.setblocking(0)
+ try:
+ self.__json_read()
+ except socket.error as err:
+ if err[0] == errno.EAGAIN:
+ # No data available
+ pass
+ self.__sock.setblocking(1)
+
+ # Wait for new events, if needed.
+ # if wait is 0.0, this means "no wait" and is also implicitly false.
+ if not self.__events and wait:
+ if isinstance(wait, float):
+ self.__sock.settimeout(wait)
+ try:
+ ret = self.__json_read(only_event=True)
+ except socket.timeout:
+ raise QMPTimeoutError("Timeout waiting for event")
+ except:
+ raise QMPConnectError("Error while reading from socket")
+ if ret is None:
+ raise QMPConnectError("Error while reading from socket")
+ self.__sock.settimeout(None)
+
+ def connect(self, negotiate=True):
+ """
+ Connect to the QMP Monitor and perform capabilities negotiation.
+
+ @return QMP greeting dict
+ @raise socket.error on socket connection errors
+ @raise QMPConnectError if the greeting is not received
+ @raise QMPCapabilitiesError if fails to negotiate capabilities
+ """
+ self.__sock.connect(self.__address)
+ self.__sockfile = self.__sock.makefile()
+ if negotiate:
+ return self.__negotiate_capabilities()
+
+ def accept(self):
+ """
+ Await connection from QMP Monitor and perform capabilities negotiation.
+
+ @return QMP greeting dict
+ @raise socket.error on socket connection errors
+ @raise QMPConnectError if the greeting is not received
+ @raise QMPCapabilitiesError if fails to negotiate capabilities
+ """
+ self.__sock.settimeout(15)
+ self.__sock, _ = self.__sock.accept()
+ self.__sockfile = self.__sock.makefile()
+ return self.__negotiate_capabilities()
+
+ def cmd_obj(self, qmp_cmd):
+ """
+ Send a QMP command to the QMP Monitor.
+
+ @param qmp_cmd: QMP command to be sent as a Python dict
+ @return QMP response as a Python dict or None if the connection has
+ been closed
+ """
+ self.logger.debug(">>> %s", qmp_cmd)
+ try:
+ self.__sock.sendall(json.dumps(qmp_cmd).encode('utf-8'))
+ except socket.error as err:
+ if err[0] == errno.EPIPE:
+ return
+ raise socket.error(err)
+ resp = self.__json_read()
+ self.logger.debug("<<< %s", resp)
+ return resp
+
+ def cmd(self, name, args=None, cmd_id=None):
+ """
+ Build a QMP command and send it to the QMP Monitor.
+
+ @param name: command name (string)
+ @param args: command arguments (dict)
+ @param cmd_id: command id (dict, list, string or int)
+ """
+ qmp_cmd = {'execute': name}
+ if args:
+ qmp_cmd['arguments'] = args
+ if cmd_id:
+ qmp_cmd['id'] = cmd_id
+ return self.cmd_obj(qmp_cmd)
+
+ def command(self, cmd, **kwds):
+ """
+ Build and send a QMP command to the monitor, report errors if any
+ """
+ ret = self.cmd(cmd, kwds)
+ if "error" in ret:
+ raise Exception(ret['error']['desc'])
+ return ret['return']
+
+ def pull_event(self, wait=False):
+ """
+ Pulls a single event.
+
+ @param wait (bool): block until an event is available.
+ @param wait (float): If wait is a float, treat it as a timeout value.
+
+ @raise QMPTimeoutError: If a timeout float is provided and the timeout
+ period elapses.
+ @raise QMPConnectError: If wait is True but no events could be
+ retrieved or if some other error occurred.
+
+ @return The first available QMP event, or None.
+ """
+ self.__get_events(wait)
+
+ if self.__events:
+ return self.__events.pop(0)
+ return None
+
+ def get_events(self, wait=False):
+ """
+ Get a list of available QMP events.
+
+ @param wait (bool): block until an event is available.
+ @param wait (float): If wait is a float, treat it as a timeout value.
+
+ @raise QMPTimeoutError: If a timeout float is provided and the timeout
+ period elapses.
+ @raise QMPConnectError: If wait is True but no events could be
+ retrieved or if some other error occurred.
+
+ @return The list of available QMP events.
+ """
+ self.__get_events(wait)
+ return self.__events
+
+ def clear_events(self):
+ """
+ Clear current list of pending events.
+ """
+ self.__events = []
+
+ def close(self):
+ self.__sock.close()
+ self.__sockfile.close()
+
+ def settimeout(self, timeout):
+ self.__sock.settimeout(timeout)
+
+ def get_sock_fd(self):
+ return self.__sock.fileno()
+
+ def is_scm_available(self):
+ return self.__sock.family == socket.AF_UNIX
--- /dev/null
+# QEMU qtest library
+#
+# Copyright (C) 2015 Red Hat Inc.
+#
+# Authors:
+# Fam Zheng <famz@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+#
+# Based on qmp.py.
+#
+
+import socket
+import os
+
+from . import QEMUMachine
+
+
+class QEMUQtestProtocol(object):
+ def __init__(self, address, server=False):
+ """
+ Create a QEMUQtestProtocol object.
+
+ @param address: QEMU address, can be either a unix socket path (string)
+ or a tuple in the form ( address, port ) for a TCP
+ connection
+ @param server: server mode, listens on the socket (bool)
+ @raise socket.error on socket connection errors
+ @note No connection is established, this is done by the connect() or
+ accept() methods
+ """
+ self._address = address
+ self._sock = self._get_sock()
+ self._sockfile = None
+ if server:
+ self._sock.bind(self._address)
+ self._sock.listen(1)
+
+ def _get_sock(self):
+ if isinstance(self._address, tuple):
+ family = socket.AF_INET
+ else:
+ family = socket.AF_UNIX
+ return socket.socket(family, socket.SOCK_STREAM)
+
+ def connect(self):
+ """
+ Connect to the qtest socket.
+
+ @raise socket.error on socket connection errors
+ """
+ self._sock.connect(self._address)
+ self._sockfile = self._sock.makefile()
+
+ def accept(self):
+ """
+ Await connection from QEMU.
+
+ @raise socket.error on socket connection errors
+ """
+ self._sock, _ = self._sock.accept()
+ self._sockfile = self._sock.makefile()
+
+ def cmd(self, qtest_cmd):
+ """
+ Send a qtest command on the wire.
+
+ @param qtest_cmd: qtest command text to be sent
+ """
+ self._sock.sendall((qtest_cmd + "\n").encode('utf-8'))
+ resp = self._sockfile.readline()
+ return resp
+
+ def close(self):
+ self._sock.close()
+ self._sockfile.close()
+
+ def settimeout(self, timeout):
+ self._sock.settimeout(timeout)
+
+
+class QEMUQtestMachine(QEMUMachine):
+ '''A QEMU VM'''
+
+ def __init__(self, binary, args=None, name=None, test_dir="/var/tmp",
+ socket_scm_helper=None):
+ if name is None:
+ name = "qemu-%d" % os.getpid()
+ super(QEMUQtestMachine,
+ self).__init__(binary, args, name=name, test_dir=test_dir,
+ socket_scm_helper=socket_scm_helper)
+ self._qtest = None
+ self._qtest_path = os.path.join(test_dir, name + "-qtest.sock")
+
+ def _base_args(self):
+ args = super(QEMUQtestMachine, self)._base_args()
+ args.extend(['-qtest', 'unix:path=' + self._qtest_path,
+ '-machine', 'accel=qtest'])
+ return args
+
+ def _pre_launch(self):
+ super(QEMUQtestMachine, self)._pre_launch()
+ self._qtest = QEMUQtestProtocol(self._qtest_path, server=True)
+
+ def _post_launch(self):
+ super(QEMUQtestMachine, self)._post_launch()
+ self._qtest.accept()
+
+ def _post_shutdown(self):
+ super(QEMUQtestMachine, self)._post_shutdown()
+ self._remove_if_exists(self._qtest_path)
+
+ def qtest(self, cmd):
+ '''Send a qtest command to guest'''
+ return self._qtest.cmd(cmd)
cc-c-option = $(if $(shell $(CC) $1 $2 -c -o /dev/null -xc /dev/null \
>/dev/null 2>&1 && echo OK), $2, $3)
-VPATH_SUFFIXES = %.c %.h %.S %.cc %.cpp %.m %.mak %.texi %.sh %.rc
+VPATH_SUFFIXES = %.c %.h %.S %.cc %.cpp %.m %.mak %.texi %.sh %.rc Kconfig%
set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
# install-prog list, dir
"""
from __future__ import print_function
+import os
import sys
import glob
import logging
import argparse
from itertools import chain
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'python'))
from qemu import QEMUMachine
logger = logging.getLogger('device-crash-test')
+++ /dev/null
-#! /bin/sh
-# Writes a target device config file to stdout, from a default and from
-# include directives therein. Also emits Makefile dependencies.
-#
-# Usage: make_device_config.sh SRC DEPFILE-NAME DEPFILE-TARGET > DEST
-
-src=$1
-dep=$2
-target=$3
-src_dir=$(dirname $src)
-all_includes=
-
-process_includes () {
- cat $1 | grep '^include' | \
- while read include file ; do
- all_includes="$all_includes $src_dir/$file"
- process_includes $src_dir/$file
- done
-}
-
-f=$src
-while [ -n "$f" ] ; do
- f=$(cat $f | tr -d '\r' | awk '/^include / {printf "'$src_dir'/%s ", $2}')
- [ $? = 0 ] || exit 1
- all_includes="$all_includes $f"
-done
-process_includes $src
-
-cat $src $all_includes | grep -v '^include'
-echo "$target: $all_includes" > $dep
--- /dev/null
+#
+# Mini-Kconfig parser
+#
+# Copyright (c) 2015 Red Hat Inc.
+#
+# Authors:
+# Paolo Bonzini <pbonzini@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2
+# or, at your option, any later version. See the COPYING file in
+# the top-level directory.
+
+from __future__ import print_function
+import os
+import sys
+import re
+import random
+
+__all__ = [ 'KconfigDataError', 'KconfigParserError',
+ 'KconfigData', 'KconfigParser' ,
+ 'defconfig', 'allyesconfig', 'allnoconfig', 'randconfig' ]
+
+def debug_print(*args):
+ #print('# ' + (' '.join(str(x) for x in args)))
+ pass
+
+# -------------------------------------------
+# KconfigData implements the Kconfig semantics. For now it can only
+# detect undefined symbols, i.e. symbols that were referenced in
+# assignments or dependencies but were not declared with "config FOO".
+#
+# Semantic actions are represented by methods called do_*. The do_var
+# method return the semantic value of a variable (which right now is
+# just its name).
+# -------------------------------------------
+
+class KconfigDataError(Exception):
+ def __init__(self, msg):
+ self.msg = msg
+
+ def __str__(self):
+ return self.msg
+
+allyesconfig = lambda x: True
+allnoconfig = lambda x: False
+defconfig = lambda x: x
+randconfig = lambda x: random.randint(0, 1) == 1
+
+class KconfigData:
+ class Expr:
+ def __and__(self, rhs):
+ return KconfigData.AND(self, rhs)
+ def __or__(self, rhs):
+ return KconfigData.OR(self, rhs)
+ def __invert__(self):
+ return KconfigData.NOT(self)
+
+ # Abstract methods
+ def add_edges_to(self, var):
+ pass
+ def evaluate(self):
+ assert False
+
+ class AND(Expr):
+ def __init__(self, lhs, rhs):
+ self.lhs = lhs
+ self.rhs = rhs
+ def __str__(self):
+ return "(%s && %s)" % (self.lhs, self.rhs)
+
+ def add_edges_to(self, var):
+ self.lhs.add_edges_to(var)
+ self.rhs.add_edges_to(var)
+ def evaluate(self):
+ return self.lhs.evaluate() and self.rhs.evaluate()
+
+ class OR(Expr):
+ def __init__(self, lhs, rhs):
+ self.lhs = lhs
+ self.rhs = rhs
+ def __str__(self):
+ return "(%s || %s)" % (self.lhs, self.rhs)
+
+ def add_edges_to(self, var):
+ self.lhs.add_edges_to(var)
+ self.rhs.add_edges_to(var)
+ def evaluate(self):
+ return self.lhs.evaluate() or self.rhs.evaluate()
+
+ class NOT(Expr):
+ def __init__(self, lhs):
+ self.lhs = lhs
+ def __str__(self):
+ return "!%s" % (self.lhs)
+
+ def add_edges_to(self, var):
+ self.lhs.add_edges_to(var)
+ def evaluate(self):
+ return not self.lhs.evaluate()
+
+ class Var(Expr):
+ def __init__(self, name):
+ self.name = name
+ self.value = None
+ self.outgoing = set()
+ self.clauses_for_var = list()
+ def __str__(self):
+ return self.name
+
+ def has_value(self):
+ return not (self.value is None)
+ def set_value(self, val, clause):
+ self.clauses_for_var.append(clause)
+ if self.has_value() and self.value != val:
+ print("The following clauses were found for " + self.name)
+ for i in self.clauses_for_var:
+ print(" " + str(i), file=sys.stderr)
+ raise KconfigDataError('contradiction between clauses when setting %s' % self)
+ debug_print("=> %s is now %s" % (self.name, val))
+ self.value = val
+
+ # depth first search of the dependency graph
+ def dfs(self, visited, f):
+ if self in visited:
+ return
+ visited.add(self)
+ for v in self.outgoing:
+ v.dfs(visited, f)
+ f(self)
+
+ def add_edges_to(self, var):
+ self.outgoing.add(var)
+ def evaluate(self):
+ if not self.has_value():
+ raise KconfigDataError('cycle found including %s' % self)
+ return self.value
+
+ class Clause:
+ def __init__(self, dest):
+ self.dest = dest
+ def priority(self):
+ return 0
+ def process(self):
+ pass
+
+ class AssignmentClause(Clause):
+ def __init__(self, dest, value):
+ KconfigData.Clause.__init__(self, dest)
+ self.value = value
+ def __str__(self):
+ return "CONFIG_%s=%s" % (self.dest, 'y' if self.value else 'n')
+
+ def process(self):
+ self.dest.set_value(self.value, self)
+
+ class DefaultClause(Clause):
+ def __init__(self, dest, value, cond=None):
+ KconfigData.Clause.__init__(self, dest)
+ self.value = value
+ self.cond = cond
+ if not (self.cond is None):
+ self.cond.add_edges_to(self.dest)
+ def __str__(self):
+ value = 'y' if self.value else 'n'
+ if self.cond is None:
+ return "config %s default %s" % (self.dest, value)
+ else:
+ return "config %s default %s if %s" % (self.dest, value, self.cond)
+
+ def priority(self):
+ # Defaults are processed just before leaving the variable
+ return -1
+ def process(self):
+ if not self.dest.has_value() and \
+ (self.cond is None or self.cond.evaluate()):
+ self.dest.set_value(self.value, self)
+
+ class DependsOnClause(Clause):
+ def __init__(self, dest, expr):
+ KconfigData.Clause.__init__(self, dest)
+ self.expr = expr
+ self.expr.add_edges_to(self.dest)
+ def __str__(self):
+ return "config %s depends on %s" % (self.dest, self.expr)
+
+ def process(self):
+ if not self.expr.evaluate():
+ self.dest.set_value(False, self)
+
+ class SelectClause(Clause):
+ def __init__(self, dest, cond):
+ KconfigData.Clause.__init__(self, dest)
+ self.cond = cond
+ self.cond.add_edges_to(self.dest)
+ def __str__(self):
+ return "select %s if %s" % (self.dest, self.cond)
+
+ def process(self):
+ if self.cond.evaluate():
+ self.dest.set_value(True, self)
+
+ def __init__(self, value_mangler=defconfig):
+ self.value_mangler = value_mangler
+ self.previously_included = []
+ self.incl_info = None
+ self.defined_vars = set()
+ self.referenced_vars = dict()
+ self.clauses = list()
+
+ # semantic analysis -------------
+
+ def check_undefined(self):
+ undef = False
+ for i in self.referenced_vars:
+ if not (i in self.defined_vars):
+ print("undefined symbol %s" % (i), file=sys.stderr)
+ undef = True
+ return undef
+
+ def compute_config(self):
+ if self.check_undefined():
+ raise KconfigDataError("there were undefined symbols")
+ return None
+
+ debug_print("Input:")
+ for clause in self.clauses:
+ debug_print(clause)
+
+ debug_print("\nDependency graph:")
+ for i in self.referenced_vars:
+ debug_print(i, "->", [str(x) for x in self.referenced_vars[i].outgoing])
+
+ # The reverse of the depth-first order is the topological sort
+ dfo = dict()
+ visited = set()
+ debug_print("\n")
+ def visit_fn(var):
+ debug_print(var, "has DFS number", len(dfo))
+ dfo[var] = len(dfo)
+
+ for name, v in self.referenced_vars.items():
+ self.do_default(v, False)
+ v.dfs(visited, visit_fn)
+
+ # Put higher DFS numbers and higher priorities first. This
+ # places the clauses in topological order and places defaults
+ # after assignments and dependencies.
+ self.clauses.sort(key=lambda x: (-dfo[x.dest], -x.priority()))
+
+ debug_print("\nSorted clauses:")
+ for clause in self.clauses:
+ debug_print(clause)
+ clause.process()
+
+ debug_print("")
+ values = dict()
+ for name, v in self.referenced_vars.items():
+ debug_print("Evaluating", name)
+ values[name] = v.evaluate()
+
+ return values
+
+ # semantic actions -------------
+
+ def do_declaration(self, var):
+ if (var in self.defined_vars):
+ raise KconfigDataError('variable "' + var + '" defined twice')
+
+ self.defined_vars.add(var.name)
+
+ # var is a string with the variable's name.
+ def do_var(self, var):
+ if (var in self.referenced_vars):
+ return self.referenced_vars[var]
+
+ var_obj = self.referenced_vars[var] = KconfigData.Var(var)
+ return var_obj
+
+ def do_assignment(self, var, val):
+ self.clauses.append(KconfigData.AssignmentClause(var, val))
+
+ def do_default(self, var, val, cond=None):
+ val = self.value_mangler(val)
+ self.clauses.append(KconfigData.DefaultClause(var, val, cond))
+
+ def do_depends_on(self, var, expr):
+ self.clauses.append(KconfigData.DependsOnClause(var, expr))
+
+ def do_select(self, var, symbol, cond=None):
+ cond = (cond & var) if cond is not None else var
+ self.clauses.append(KconfigData.SelectClause(symbol, cond))
+
+ def do_imply(self, var, symbol, cond=None):
+ # "config X imply Y [if COND]" is the same as
+ # "config Y default y if X [&& COND]"
+ cond = (cond & var) if cond is not None else var
+ self.do_default(symbol, True, cond)
+
+# -------------------------------------------
+# KconfigParser implements a recursive descent parser for (simplified)
+# Kconfig syntax.
+# -------------------------------------------
+
+# tokens table
+TOKENS = {}
+TOK_NONE = -1
+TOK_LPAREN = 0; TOKENS[TOK_LPAREN] = '"("';
+TOK_RPAREN = 1; TOKENS[TOK_RPAREN] = '")"';
+TOK_EQUAL = 2; TOKENS[TOK_EQUAL] = '"="';
+TOK_AND = 3; TOKENS[TOK_AND] = '"&&"';
+TOK_OR = 4; TOKENS[TOK_OR] = '"||"';
+TOK_NOT = 5; TOKENS[TOK_NOT] = '"!"';
+TOK_DEPENDS = 6; TOKENS[TOK_DEPENDS] = '"depends"';
+TOK_ON = 7; TOKENS[TOK_ON] = '"on"';
+TOK_SELECT = 8; TOKENS[TOK_SELECT] = '"select"';
+TOK_IMPLY = 9; TOKENS[TOK_IMPLY] = '"imply"';
+TOK_CONFIG = 10; TOKENS[TOK_CONFIG] = '"config"';
+TOK_DEFAULT = 11; TOKENS[TOK_DEFAULT] = '"default"';
+TOK_Y = 12; TOKENS[TOK_Y] = '"y"';
+TOK_N = 13; TOKENS[TOK_N] = '"n"';
+TOK_SOURCE = 14; TOKENS[TOK_SOURCE] = '"source"';
+TOK_BOOL = 15; TOKENS[TOK_BOOL] = '"bool"';
+TOK_IF = 16; TOKENS[TOK_IF] = '"if"';
+TOK_ID = 17; TOKENS[TOK_ID] = 'identifier';
+TOK_EOF = 18; TOKENS[TOK_EOF] = 'end of file';
+
+class KconfigParserError(Exception):
+ def __init__(self, parser, msg, tok=None):
+ self.loc = parser.location()
+ tok = tok or parser.tok
+ if tok != TOK_NONE:
+ location = TOKENS.get(tok, None) or ('"%s"' % tok)
+ msg = '%s before %s' % (msg, location)
+ self.msg = msg
+
+ def __str__(self):
+ return "%s: %s" % (self.loc, self.msg)
+
+class KconfigParser:
+
+ @classmethod
+ def parse(self, fp, mode=None):
+ data = KconfigData(mode or KconfigParser.defconfig)
+ parser = KconfigParser(data)
+ parser.parse_file(fp)
+ return data
+
+ def __init__(self, data):
+ self.data = data
+
+ def parse_file(self, fp):
+ self.abs_fname = os.path.abspath(fp.name)
+ self.fname = fp.name
+ self.data.previously_included.append(self.abs_fname)
+ self.src = fp.read()
+ if self.src == '' or self.src[-1] != '\n':
+ self.src += '\n'
+ self.cursor = 0
+ self.line = 1
+ self.line_pos = 0
+ self.get_token()
+ self.parse_config()
+
+ def do_assignment(self, var, val):
+ if not var.startswith("CONFIG_"):
+ raise Error('assigned variable should start with CONFIG_')
+ var = self.data.do_var(var[7:])
+ self.data.do_assignment(var, val)
+
+ # file management -----
+
+ def error_path(self):
+ inf = self.data.incl_info
+ res = ""
+ while inf:
+ res = ("In file included from %s:%d:\n" % (inf['file'],
+ inf['line'])) + res
+ inf = inf['parent']
+ return res
+
+ def location(self):
+ col = 1
+ for ch in self.src[self.line_pos:self.pos]:
+ if ch == '\t':
+ col += 8 - ((col - 1) % 8)
+ else:
+ col += 1
+ return '%s%s:%d:%d' %(self.error_path(), self.fname, self.line, col)
+
+ def do_include(self, include):
+ incl_abs_fname = os.path.join(os.path.dirname(self.abs_fname),
+ include)
+ # catch inclusion cycle
+ inf = self.data.incl_info
+ while inf:
+ if incl_abs_fname == os.path.abspath(inf['file']):
+ raise KconfigParserError(self, "Inclusion loop for %s"
+ % include)
+ inf = inf['parent']
+
+ # skip multiple include of the same file
+ if incl_abs_fname in self.data.previously_included:
+ return
+ try:
+ fp = open(incl_abs_fname, 'r')
+ except IOError as e:
+ raise KconfigParserError(self,
+ '%s: %s' % (e.strerror, include))
+
+ inf = self.data.incl_info
+ self.data.incl_info = { 'file': self.fname, 'line': self.line,
+ 'parent': inf }
+ KconfigParser(self.data).parse_file(fp)
+ self.data.incl_info = inf
+
+ # recursive descent parser -----
+
+ # y_or_n: Y | N
+ def parse_y_or_n(self):
+ if self.tok == TOK_Y:
+ self.get_token()
+ return True
+ if self.tok == TOK_N:
+ self.get_token()
+ return False
+ raise KconfigParserError(self, 'Expected "y" or "n"')
+
+ # var: ID
+ def parse_var(self):
+ if self.tok == TOK_ID:
+ val = self.val
+ self.get_token()
+ return self.data.do_var(val)
+ else:
+ raise KconfigParserError(self, 'Expected identifier')
+
+ # assignment_var: ID (starting with "CONFIG_")
+ def parse_assignment_var(self):
+ if self.tok == TOK_ID:
+ val = self.val
+ if not val.startswith("CONFIG_"):
+ raise KconfigParserError(self,
+ 'Expected identifier starting with "CONFIG_"', TOK_NONE)
+ self.get_token()
+ return self.data.do_var(val[7:])
+ else:
+ raise KconfigParserError(self, 'Expected identifier')
+
+ # assignment: var EQUAL y_or_n
+ def parse_assignment(self):
+ var = self.parse_assignment_var()
+ if self.tok != TOK_EQUAL:
+ raise KconfigParserError(self, 'Expected "="')
+ self.get_token()
+ self.data.do_assignment(var, self.parse_y_or_n())
+
+ # primary: NOT primary
+ # | LPAREN expr RPAREN
+ # | var
+ def parse_primary(self):
+ if self.tok == TOK_NOT:
+ self.get_token()
+ val = ~self.parse_primary()
+ elif self.tok == TOK_LPAREN:
+ self.get_token()
+ val = self.parse_expr()
+ if self.tok != TOK_RPAREN:
+ raise KconfigParserError(self, 'Expected ")"')
+ self.get_token()
+ elif self.tok == TOK_ID:
+ val = self.parse_var()
+ else:
+ raise KconfigParserError(self, 'Expected "!" or "(" or identifier')
+ return val
+
+ # disj: primary (OR primary)*
+ def parse_disj(self):
+ lhs = self.parse_primary()
+ while self.tok == TOK_OR:
+ self.get_token()
+ lhs = lhs | self.parse_primary()
+ return lhs
+
+ # expr: disj (AND disj)*
+ def parse_expr(self):
+ lhs = self.parse_disj()
+ while self.tok == TOK_AND:
+ self.get_token()
+ lhs = lhs & self.parse_disj()
+ return lhs
+
+ # condition: IF expr
+ # | empty
+ def parse_condition(self):
+ if self.tok == TOK_IF:
+ self.get_token()
+ return self.parse_expr()
+ else:
+ return None
+
+ # property: DEFAULT y_or_n condition
+ # | DEPENDS ON expr
+ # | SELECT var condition
+ # | BOOL
+ def parse_property(self, var):
+ if self.tok == TOK_DEFAULT:
+ self.get_token()
+ val = self.parse_y_or_n()
+ cond = self.parse_condition()
+ self.data.do_default(var, val, cond)
+ elif self.tok == TOK_DEPENDS:
+ self.get_token()
+ if self.tok != TOK_ON:
+ raise KconfigParserError(self, 'Expected "on"')
+ self.get_token()
+ self.data.do_depends_on(var, self.parse_expr())
+ elif self.tok == TOK_SELECT:
+ self.get_token()
+ symbol = self.parse_var()
+ cond = self.parse_condition()
+ self.data.do_select(var, symbol, cond)
+ elif self.tok == TOK_IMPLY:
+ self.get_token()
+ symbol = self.parse_var()
+ cond = self.parse_condition()
+ self.data.do_imply(var, symbol, cond)
+ elif self.tok == TOK_BOOL:
+ self.get_token()
+ else:
+ raise KconfigParserError(self, 'Error in recursive descent?')
+
+ # properties: properties property
+ # | /* empty */
+ def parse_properties(self, var):
+ had_default = False
+ while self.tok == TOK_DEFAULT or self.tok == TOK_DEPENDS or \
+ self.tok == TOK_SELECT or self.tok == TOK_BOOL or \
+ self.tok == TOK_IMPLY:
+ self.parse_property(var)
+
+ # for nicer error message
+ if self.tok != TOK_SOURCE and self.tok != TOK_CONFIG and \
+ self.tok != TOK_ID and self.tok != TOK_EOF:
+ raise KconfigParserError(self, 'expected "source", "config", identifier, '
+ + '"default", "depends on", "imply" or "select"')
+
+ # declaration: config var properties
+ def parse_declaration(self):
+ if self.tok == TOK_CONFIG:
+ self.get_token()
+ var = self.parse_var()
+ self.data.do_declaration(var)
+ self.parse_properties(var)
+ else:
+ raise KconfigParserError(self, 'Error in recursive descent?')
+
+ # clause: SOURCE
+ # | declaration
+ # | assignment
+ def parse_clause(self):
+ if self.tok == TOK_SOURCE:
+ val = self.val
+ self.get_token()
+ self.do_include(val)
+ elif self.tok == TOK_CONFIG:
+ self.parse_declaration()
+ elif self.tok == TOK_ID:
+ self.parse_assignment()
+ else:
+ raise KconfigParserError(self, 'expected "source", "config" or identifier')
+
+ # config: clause+ EOF
+ def parse_config(self):
+ while self.tok != TOK_EOF:
+ self.parse_clause()
+ return self.data
+
+ # scanner -----
+
+ def get_token(self):
+ while True:
+ self.tok = self.src[self.cursor]
+ self.pos = self.cursor
+ self.cursor += 1
+
+ self.val = None
+ self.tok = self.scan_token()
+ if self.tok is not None:
+ return
+
+ def check_keyword(self, rest):
+ if not self.src.startswith(rest, self.cursor):
+ return False
+ length = len(rest)
+ if self.src[self.cursor + length].isalnum() or self.src[self.cursor + length] == '|':
+ return False
+ self.cursor += length
+ return True
+
+ def scan_token(self):
+ if self.tok == '#':
+ self.cursor = self.src.find('\n', self.cursor)
+ return None
+ elif self.tok == '=':
+ return TOK_EQUAL
+ elif self.tok == '(':
+ return TOK_LPAREN
+ elif self.tok == ')':
+ return TOK_RPAREN
+ elif self.tok == '&' and self.src[self.pos+1] == '&':
+ self.cursor += 1
+ return TOK_AND
+ elif self.tok == '|' and self.src[self.pos+1] == '|':
+ self.cursor += 1
+ return TOK_OR
+ elif self.tok == '!':
+ return TOK_NOT
+ elif self.tok == 'd' and self.check_keyword("epends"):
+ return TOK_DEPENDS
+ elif self.tok == 'o' and self.check_keyword("n"):
+ return TOK_ON
+ elif self.tok == 's' and self.check_keyword("elect"):
+ return TOK_SELECT
+ elif self.tok == 'i' and self.check_keyword("mply"):
+ return TOK_IMPLY
+ elif self.tok == 'c' and self.check_keyword("onfig"):
+ return TOK_CONFIG
+ elif self.tok == 'd' and self.check_keyword("efault"):
+ return TOK_DEFAULT
+ elif self.tok == 'b' and self.check_keyword("ool"):
+ return TOK_BOOL
+ elif self.tok == 'i' and self.check_keyword("f"):
+ return TOK_IF
+ elif self.tok == 'y' and self.check_keyword(""):
+ return TOK_Y
+ elif self.tok == 'n' and self.check_keyword(""):
+ return TOK_N
+ elif (self.tok == 's' and self.check_keyword("ource")) or \
+ self.tok == 'i' and self.check_keyword("nclude"):
+ # source FILENAME
+ # include FILENAME
+ while self.src[self.cursor].isspace():
+ self.cursor += 1
+ start = self.cursor
+ self.cursor = self.src.find('\n', self.cursor)
+ self.val = self.src[start:self.cursor]
+ return TOK_SOURCE
+ elif self.tok.isalpha():
+ # identifier
+ while self.src[self.cursor].isalnum() or self.src[self.cursor] == '_':
+ self.cursor += 1
+ self.val = self.src[self.pos:self.cursor]
+ return TOK_ID
+ elif self.tok == '\n':
+ if self.cursor == len(self.src):
+ return TOK_EOF
+ self.line += 1
+ self.line_pos = self.cursor
+ elif not self.tok.isspace():
+ raise KconfigParserError(self, 'invalid input')
+
+ return None
+
+if __name__ == '__main__':
+ argv = sys.argv
+ mode = defconfig
+ if len(sys.argv) > 1:
+ if argv[1] == '--defconfig':
+ del argv[1]
+ elif argv[1] == '--randconfig':
+ random.seed()
+ mode = randconfig
+ del argv[1]
+ elif argv[1] == '--allyesconfig':
+ mode = allyesconfig
+ del argv[1]
+ elif argv[1] == '--allnoconfig':
+ mode = allnoconfig
+ del argv[1]
+
+ if len(argv) == 1:
+ print ("%s: at least one argument is required" % argv[0], file=sys.stderr)
+ sys.exit(1)
+
+ if argv[1].startswith('-'):
+ print ("%s: invalid option %s" % (argv[0], argv[1]), file=sys.stderr)
+ sys.exit(1)
+
+ data = KconfigData(mode)
+ parser = KconfigParser(data)
+ for arg in argv[3:]:
+ m = re.match(r'^(CONFIG_[A-Z0-9_]+)=([yn]?)$', arg)
+ if m is not None:
+ name, value = m.groups()
+ parser.do_assignment(name, value == 'y')
+ else:
+ fp = open(arg, 'r')
+ parser.parse_file(fp)
+ fp.close()
+
+ config = data.compute_config()
+ for key in sorted(config.keys()):
+ print ('CONFIG_%s=%s' % (key, ('y' if config[key] else 'n')))
+
+ deps = open(argv[2], 'w')
+ for fname in data.previously_included:
+ print ('%s: %s' % (argv[1], fname), file=deps)
+ deps.close()
+++ /dev/null
-# QEMU library
-#
-# Copyright (C) 2015-2016 Red Hat Inc.
-# Copyright (C) 2012 IBM Corp.
-#
-# Authors:
-# Fam Zheng <famz@redhat.com>
-#
-# This work is licensed under the terms of the GNU GPL, version 2. See
-# the COPYING file in the top-level directory.
-#
-# Based on qmp.py.
-#
-
-import errno
-import logging
-import os
-import subprocess
-import qmp.qmp
-import re
-import shutil
-import socket
-import tempfile
-
-
-LOG = logging.getLogger(__name__)
-
-# Mapping host architecture to any additional architectures it can
-# support which often includes its 32 bit cousin.
-ADDITIONAL_ARCHES = {
- "x86_64" : "i386",
- "aarch64" : "armhf"
-}
-
-def kvm_available(target_arch=None):
- host_arch = os.uname()[4]
- if target_arch and target_arch != host_arch:
- if target_arch != ADDITIONAL_ARCHES.get(host_arch):
- return False
- return os.access("/dev/kvm", os.R_OK | os.W_OK)
-
-
-#: Maps machine types to the preferred console device types
-CONSOLE_DEV_TYPES = {
- r'^clipper$': 'isa-serial',
- r'^malta': 'isa-serial',
- r'^(pc.*|q35.*|isapc)$': 'isa-serial',
- r'^(40p|powernv|prep)$': 'isa-serial',
- r'^pseries.*': 'spapr-vty',
- r'^s390-ccw-virtio.*': 'sclpconsole',
- }
-
-
-class QEMUMachineError(Exception):
- """
- Exception called when an error in QEMUMachine happens.
- """
-
-
-class QEMUMachineAddDeviceError(QEMUMachineError):
- """
- Exception raised when a request to add a device can not be fulfilled
-
- The failures are caused by limitations, lack of information or conflicting
- requests on the QEMUMachine methods. This exception does not represent
- failures reported by the QEMU binary itself.
- """
-
-class MonitorResponseError(qmp.qmp.QMPError):
- """
- Represents erroneous QMP monitor reply
- """
- def __init__(self, reply):
- try:
- desc = reply["error"]["desc"]
- except KeyError:
- desc = reply
- super(MonitorResponseError, self).__init__(desc)
- self.reply = reply
-
-
-class QEMUMachine(object):
- """
- A QEMU VM
-
- Use this object as a context manager to ensure the QEMU process terminates::
-
- with VM(binary) as vm:
- ...
- # vm is guaranteed to be shut down here
- """
-
- def __init__(self, binary, args=None, wrapper=None, name=None,
- test_dir="/var/tmp", monitor_address=None,
- socket_scm_helper=None):
- '''
- Initialize a QEMUMachine
-
- @param binary: path to the qemu binary
- @param args: list of extra arguments
- @param wrapper: list of arguments used as prefix to qemu binary
- @param name: prefix for socket and log file names (default: qemu-PID)
- @param test_dir: where to create socket and log file
- @param monitor_address: address for QMP monitor
- @param socket_scm_helper: helper program, required for send_fd_scm()
- @note: Qemu process is not started until launch() is used.
- '''
- if args is None:
- args = []
- if wrapper is None:
- wrapper = []
- if name is None:
- name = "qemu-%d" % os.getpid()
- self._name = name
- self._monitor_address = monitor_address
- self._vm_monitor = None
- self._qemu_log_path = None
- self._qemu_log_file = None
- self._popen = None
- self._binary = binary
- self._args = list(args) # Force copy args in case we modify them
- self._wrapper = wrapper
- self._events = []
- self._iolog = None
- self._socket_scm_helper = socket_scm_helper
- self._qmp = None
- self._qemu_full_args = None
- self._test_dir = test_dir
- self._temp_dir = None
- self._launched = False
- self._machine = None
- self._console_device_type = None
- self._console_address = None
- self._console_socket = None
-
- # just in case logging wasn't configured by the main script:
- logging.basicConfig()
-
- def __enter__(self):
- return self
-
- def __exit__(self, exc_type, exc_val, exc_tb):
- self.shutdown()
- return False
-
- # This can be used to add an unused monitor instance.
- def add_monitor_null(self):
- self._args.append('-monitor')
- self._args.append('null')
-
- def add_fd(self, fd, fdset, opaque, opts=''):
- """
- Pass a file descriptor to the VM
- """
- options = ['fd=%d' % fd,
- 'set=%d' % fdset,
- 'opaque=%s' % opaque]
- if opts:
- options.append(opts)
-
- # This did not exist before 3.4, but since then it is
- # mandatory for our purpose
- if hasattr(os, 'set_inheritable'):
- os.set_inheritable(fd, True)
-
- self._args.append('-add-fd')
- self._args.append(','.join(options))
- return self
-
- # Exactly one of fd and file_path must be given.
- # (If it is file_path, the helper will open that file and pass its
- # own fd)
- def send_fd_scm(self, fd=None, file_path=None):
- # In iotest.py, the qmp should always use unix socket.
- assert self._qmp.is_scm_available()
- if self._socket_scm_helper is None:
- raise QEMUMachineError("No path to socket_scm_helper set")
- if not os.path.exists(self._socket_scm_helper):
- raise QEMUMachineError("%s does not exist" %
- self._socket_scm_helper)
-
- # This did not exist before 3.4, but since then it is
- # mandatory for our purpose
- if hasattr(os, 'set_inheritable'):
- os.set_inheritable(self._qmp.get_sock_fd(), True)
- if fd is not None:
- os.set_inheritable(fd, True)
-
- fd_param = ["%s" % self._socket_scm_helper,
- "%d" % self._qmp.get_sock_fd()]
-
- if file_path is not None:
- assert fd is None
- fd_param.append(file_path)
- else:
- assert fd is not None
- fd_param.append(str(fd))
-
- devnull = open(os.path.devnull, 'rb')
- proc = subprocess.Popen(fd_param, stdin=devnull, stdout=subprocess.PIPE,
- stderr=subprocess.STDOUT, close_fds=False)
- output = proc.communicate()[0]
- if output:
- LOG.debug(output)
-
- return proc.returncode
-
- @staticmethod
- def _remove_if_exists(path):
- """
- Remove file object at path if it exists
- """
- try:
- os.remove(path)
- except OSError as exception:
- if exception.errno == errno.ENOENT:
- return
- raise
-
- def is_running(self):
- return self._popen is not None and self._popen.poll() is None
-
- def exitcode(self):
- if self._popen is None:
- return None
- return self._popen.poll()
-
- def get_pid(self):
- if not self.is_running():
- return None
- return self._popen.pid
-
- def _load_io_log(self):
- if self._qemu_log_path is not None:
- with open(self._qemu_log_path, "r") as iolog:
- self._iolog = iolog.read()
-
- def _base_args(self):
- if isinstance(self._monitor_address, tuple):
- moncdev = "socket,id=mon,host=%s,port=%s" % (
- self._monitor_address[0],
- self._monitor_address[1])
- else:
- moncdev = 'socket,id=mon,path=%s' % self._vm_monitor
- args = ['-chardev', moncdev,
- '-mon', 'chardev=mon,mode=control',
- '-display', 'none', '-vga', 'none']
- if self._machine is not None:
- args.extend(['-machine', self._machine])
- if self._console_device_type is not None:
- self._console_address = os.path.join(self._temp_dir,
- self._name + "-console.sock")
- chardev = ('socket,id=console,path=%s,server,nowait' %
- self._console_address)
- device = '%s,chardev=console' % self._console_device_type
- args.extend(['-chardev', chardev, '-device', device])
- return args
-
- def _pre_launch(self):
- self._temp_dir = tempfile.mkdtemp(dir=self._test_dir)
- if self._monitor_address is not None:
- self._vm_monitor = self._monitor_address
- else:
- self._vm_monitor = os.path.join(self._temp_dir,
- self._name + "-monitor.sock")
- self._qemu_log_path = os.path.join(self._temp_dir, self._name + ".log")
- self._qemu_log_file = open(self._qemu_log_path, 'wb')
-
- self._qmp = qmp.qmp.QEMUMonitorProtocol(self._vm_monitor,
- server=True)
-
- def _post_launch(self):
- self._qmp.accept()
-
- def _post_shutdown(self):
- if self._qemu_log_file is not None:
- self._qemu_log_file.close()
- self._qemu_log_file = None
-
- self._qemu_log_path = None
-
- if self._console_socket is not None:
- self._console_socket.close()
- self._console_socket = None
-
- if self._temp_dir is not None:
- shutil.rmtree(self._temp_dir)
- self._temp_dir = None
-
- def launch(self):
- """
- Launch the VM and make sure we cleanup and expose the
- command line/output in case of exception
- """
-
- if self._launched:
- raise QEMUMachineError('VM already launched')
-
- self._iolog = None
- self._qemu_full_args = None
- try:
- self._launch()
- self._launched = True
- except:
- self.shutdown()
-
- LOG.debug('Error launching VM')
- if self._qemu_full_args:
- LOG.debug('Command: %r', ' '.join(self._qemu_full_args))
- if self._iolog:
- LOG.debug('Output: %r', self._iolog)
- raise
-
- def _launch(self):
- """
- Launch the VM and establish a QMP connection
- """
- devnull = open(os.path.devnull, 'rb')
- self._pre_launch()
- self._qemu_full_args = (self._wrapper + [self._binary] +
- self._base_args() + self._args)
- self._popen = subprocess.Popen(self._qemu_full_args,
- stdin=devnull,
- stdout=self._qemu_log_file,
- stderr=subprocess.STDOUT,
- shell=False,
- close_fds=False)
- self._post_launch()
-
- def wait(self):
- """
- Wait for the VM to power off
- """
- self._popen.wait()
- self._qmp.close()
- self._load_io_log()
- self._post_shutdown()
-
- def shutdown(self):
- """
- Terminate the VM and clean up
- """
- if self.is_running():
- try:
- self._qmp.cmd('quit')
- self._qmp.close()
- except:
- self._popen.kill()
- self._popen.wait()
-
- self._load_io_log()
- self._post_shutdown()
-
- exitcode = self.exitcode()
- if exitcode is not None and exitcode < 0:
- msg = 'qemu received signal %i: %s'
- if self._qemu_full_args:
- command = ' '.join(self._qemu_full_args)
- else:
- command = ''
- LOG.warn(msg, -exitcode, command)
-
- self._launched = False
-
- def qmp(self, cmd, conv_keys=True, **args):
- """
- Invoke a QMP command and return the response dict
- """
- qmp_args = dict()
- for key, value in args.items():
- if conv_keys:
- qmp_args[key.replace('_', '-')] = value
- else:
- qmp_args[key] = value
-
- return self._qmp.cmd(cmd, args=qmp_args)
-
- def command(self, cmd, conv_keys=True, **args):
- """
- Invoke a QMP command.
- On success return the response dict.
- On failure raise an exception.
- """
- reply = self.qmp(cmd, conv_keys, **args)
- if reply is None:
- raise qmp.qmp.QMPError("Monitor is closed")
- if "error" in reply:
- raise MonitorResponseError(reply)
- return reply["return"]
-
- def get_qmp_event(self, wait=False):
- """
- Poll for one queued QMP events and return it
- """
- if len(self._events) > 0:
- return self._events.pop(0)
- return self._qmp.pull_event(wait=wait)
-
- def get_qmp_events(self, wait=False):
- """
- Poll for queued QMP events and return a list of dicts
- """
- events = self._qmp.get_events(wait=wait)
- events.extend(self._events)
- del self._events[:]
- self._qmp.clear_events()
- return events
-
- def event_wait(self, name, timeout=60.0, match=None):
- """
- Wait for specified timeout on named event in QMP; optionally filter
- results by match.
-
- The 'match' is checked to be a recursive subset of the 'event'; skips
- branch processing on match's value None
- {"foo": {"bar": 1}} matches {"foo": None}
- {"foo": {"bar": 1}} does not matches {"foo": {"baz": None}}
- """
- def event_match(event, match=None):
- if match is None:
- return True
-
- for key in match:
- if key in event:
- if isinstance(event[key], dict):
- if not event_match(event[key], match[key]):
- return False
- elif event[key] != match[key]:
- return False
- else:
- return False
-
- return True
-
- # Search cached events
- for event in self._events:
- if (event['event'] == name) and event_match(event, match):
- self._events.remove(event)
- return event
-
- # Poll for new events
- while True:
- event = self._qmp.pull_event(wait=timeout)
- if (event['event'] == name) and event_match(event, match):
- return event
- self._events.append(event)
-
- return None
-
- def get_log(self):
- """
- After self.shutdown or failed qemu execution, this returns the output
- of the qemu process.
- """
- return self._iolog
-
- def add_args(self, *args):
- """
- Adds to the list of extra arguments to be given to the QEMU binary
- """
- self._args.extend(args)
-
- def set_machine(self, machine_type):
- """
- Sets the machine type
-
- If set, the machine type will be added to the base arguments
- of the resulting QEMU command line.
- """
- self._machine = machine_type
-
- def set_console(self, device_type=None):
- """
- Sets the device type for a console device
-
- If set, the console device and a backing character device will
- be added to the base arguments of the resulting QEMU command
- line.
-
- This is a convenience method that will either use the provided
- device type, of if not given, it will used the device type set
- on CONSOLE_DEV_TYPES.
-
- The actual setting of command line arguments will be be done at
- machine launch time, as it depends on the temporary directory
- to be created.
-
- @param device_type: the device type, such as "isa-serial"
- @raises: QEMUMachineAddDeviceError if the device type is not given
- and can not be determined.
- """
- if device_type is None:
- if self._machine is None:
- raise QEMUMachineAddDeviceError("Can not add a console device:"
- " QEMU instance without a "
- "defined machine type")
- for regex, device in CONSOLE_DEV_TYPES.items():
- if re.match(regex, self._machine):
- device_type = device
- break
- if device_type is None:
- raise QEMUMachineAddDeviceError("Can not add a console device:"
- " no matching console device "
- "type definition")
- self._console_device_type = device_type
-
- @property
- def console_socket(self):
- """
- Returns a socket connected to the console
- """
- if self._console_socket is None:
- self._console_socket = socket.socket(socket.AF_UNIX,
- socket.SOCK_STREAM)
- self._console_socket.connect(self._console_address)
- return self._console_socket
#
from __future__ import print_function
+import os
+import sys
import base64
import random
-import qmp
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
+from qemu import qmp
class QemuGuestAgent(qmp.QEMUMonitorProtocol):
# sent to QEMU, which is useful for debugging and documentation generation.
from __future__ import print_function
-import qmp
import json
import ast
import readline
import atexit
import shlex
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
+from qemu import qmp
+
class QMPCompleter(list):
def complete(self, text, state):
for cmd in self:
+++ /dev/null
-# QEMU Monitor Protocol Python class
-#
-# Copyright (C) 2009, 2010 Red Hat Inc.
-#
-# Authors:
-# Luiz Capitulino <lcapitulino@redhat.com>
-#
-# This work is licensed under the terms of the GNU GPL, version 2. See
-# the COPYING file in the top-level directory.
-
-import json
-import errno
-import socket
-import logging
-
-
-class QMPError(Exception):
- pass
-
-
-class QMPConnectError(QMPError):
- pass
-
-
-class QMPCapabilitiesError(QMPError):
- pass
-
-
-class QMPTimeoutError(QMPError):
- pass
-
-
-class QEMUMonitorProtocol(object):
-
- #: Logger object for debugging messages
- logger = logging.getLogger('QMP')
- #: Socket's error class
- error = socket.error
- #: Socket's timeout
- timeout = socket.timeout
-
- def __init__(self, address, server=False):
- """
- Create a QEMUMonitorProtocol class.
-
- @param address: QEMU address, can be either a unix socket path (string)
- or a tuple in the form ( address, port ) for a TCP
- connection
- @param server: server mode listens on the socket (bool)
- @raise socket.error on socket connection errors
- @note No connection is established, this is done by the connect() or
- accept() methods
- """
- self.__events = []
- self.__address = address
- self.__sock = self.__get_sock()
- self.__sockfile = None
- if server:
- self.__sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
- self.__sock.bind(self.__address)
- self.__sock.listen(1)
-
- def __get_sock(self):
- if isinstance(self.__address, tuple):
- family = socket.AF_INET
- else:
- family = socket.AF_UNIX
- return socket.socket(family, socket.SOCK_STREAM)
-
- def __negotiate_capabilities(self):
- greeting = self.__json_read()
- if greeting is None or "QMP" not in greeting:
- raise QMPConnectError
- # Greeting seems ok, negotiate capabilities
- resp = self.cmd('qmp_capabilities')
- if "return" in resp:
- return greeting
- raise QMPCapabilitiesError
-
- def __json_read(self, only_event=False):
- while True:
- data = self.__sockfile.readline()
- if not data:
- return
- resp = json.loads(data)
- if 'event' in resp:
- self.logger.debug("<<< %s", resp)
- self.__events.append(resp)
- if not only_event:
- continue
- return resp
-
- def __get_events(self, wait=False):
- """
- Check for new events in the stream and cache them in __events.
-
- @param wait (bool): block until an event is available.
- @param wait (float): If wait is a float, treat it as a timeout value.
-
- @raise QMPTimeoutError: If a timeout float is provided and the timeout
- period elapses.
- @raise QMPConnectError: If wait is True but no events could be
- retrieved or if some other error occurred.
- """
-
- # Check for new events regardless and pull them into the cache:
- self.__sock.setblocking(0)
- try:
- self.__json_read()
- except socket.error as err:
- if err[0] == errno.EAGAIN:
- # No data available
- pass
- self.__sock.setblocking(1)
-
- # Wait for new events, if needed.
- # if wait is 0.0, this means "no wait" and is also implicitly false.
- if not self.__events and wait:
- if isinstance(wait, float):
- self.__sock.settimeout(wait)
- try:
- ret = self.__json_read(only_event=True)
- except socket.timeout:
- raise QMPTimeoutError("Timeout waiting for event")
- except:
- raise QMPConnectError("Error while reading from socket")
- if ret is None:
- raise QMPConnectError("Error while reading from socket")
- self.__sock.settimeout(None)
-
- def connect(self, negotiate=True):
- """
- Connect to the QMP Monitor and perform capabilities negotiation.
-
- @return QMP greeting dict
- @raise socket.error on socket connection errors
- @raise QMPConnectError if the greeting is not received
- @raise QMPCapabilitiesError if fails to negotiate capabilities
- """
- self.__sock.connect(self.__address)
- self.__sockfile = self.__sock.makefile()
- if negotiate:
- return self.__negotiate_capabilities()
-
- def accept(self):
- """
- Await connection from QMP Monitor and perform capabilities negotiation.
-
- @return QMP greeting dict
- @raise socket.error on socket connection errors
- @raise QMPConnectError if the greeting is not received
- @raise QMPCapabilitiesError if fails to negotiate capabilities
- """
- self.__sock.settimeout(15)
- self.__sock, _ = self.__sock.accept()
- self.__sockfile = self.__sock.makefile()
- return self.__negotiate_capabilities()
-
- def cmd_obj(self, qmp_cmd):
- """
- Send a QMP command to the QMP Monitor.
-
- @param qmp_cmd: QMP command to be sent as a Python dict
- @return QMP response as a Python dict or None if the connection has
- been closed
- """
- self.logger.debug(">>> %s", qmp_cmd)
- try:
- self.__sock.sendall(json.dumps(qmp_cmd).encode('utf-8'))
- except socket.error as err:
- if err[0] == errno.EPIPE:
- return
- raise socket.error(err)
- resp = self.__json_read()
- self.logger.debug("<<< %s", resp)
- return resp
-
- def cmd(self, name, args=None, cmd_id=None):
- """
- Build a QMP command and send it to the QMP Monitor.
-
- @param name: command name (string)
- @param args: command arguments (dict)
- @param cmd_id: command id (dict, list, string or int)
- """
- qmp_cmd = {'execute': name}
- if args:
- qmp_cmd['arguments'] = args
- if cmd_id:
- qmp_cmd['id'] = cmd_id
- return self.cmd_obj(qmp_cmd)
-
- def command(self, cmd, **kwds):
- """
- Build and send a QMP command to the monitor, report errors if any
- """
- ret = self.cmd(cmd, kwds)
- if "error" in ret:
- raise Exception(ret['error']['desc'])
- return ret['return']
-
- def pull_event(self, wait=False):
- """
- Pulls a single event.
-
- @param wait (bool): block until an event is available.
- @param wait (float): If wait is a float, treat it as a timeout value.
-
- @raise QMPTimeoutError: If a timeout float is provided and the timeout
- period elapses.
- @raise QMPConnectError: If wait is True but no events could be
- retrieved or if some other error occurred.
-
- @return The first available QMP event, or None.
- """
- self.__get_events(wait)
-
- if self.__events:
- return self.__events.pop(0)
- return None
-
- def get_events(self, wait=False):
- """
- Get a list of available QMP events.
-
- @param wait (bool): block until an event is available.
- @param wait (float): If wait is a float, treat it as a timeout value.
-
- @raise QMPTimeoutError: If a timeout float is provided and the timeout
- period elapses.
- @raise QMPConnectError: If wait is True but no events could be
- retrieved or if some other error occurred.
-
- @return The list of available QMP events.
- """
- self.__get_events(wait)
- return self.__events
-
- def clear_events(self):
- """
- Clear current list of pending events.
- """
- self.__events = []
-
- def close(self):
- self.__sock.close()
- self.__sockfile.close()
-
- def settimeout(self, timeout):
- self.__sock.settimeout(timeout)
-
- def get_sock_fd(self):
- return self.__sock.fileno()
-
- def is_scm_available(self):
- return self.__sock.family == socket.AF_UNIX
+++ /dev/null
-# QEMU qtest library
-#
-# Copyright (C) 2015 Red Hat Inc.
-#
-# Authors:
-# Fam Zheng <famz@redhat.com>
-#
-# This work is licensed under the terms of the GNU GPL, version 2. See
-# the COPYING file in the top-level directory.
-#
-# Based on qmp.py.
-#
-
-import socket
-import os
-import qemu
-
-
-class QEMUQtestProtocol(object):
- def __init__(self, address, server=False):
- """
- Create a QEMUQtestProtocol object.
-
- @param address: QEMU address, can be either a unix socket path (string)
- or a tuple in the form ( address, port ) for a TCP
- connection
- @param server: server mode, listens on the socket (bool)
- @raise socket.error on socket connection errors
- @note No connection is established, this is done by the connect() or
- accept() methods
- """
- self._address = address
- self._sock = self._get_sock()
- self._sockfile = None
- if server:
- self._sock.bind(self._address)
- self._sock.listen(1)
-
- def _get_sock(self):
- if isinstance(self._address, tuple):
- family = socket.AF_INET
- else:
- family = socket.AF_UNIX
- return socket.socket(family, socket.SOCK_STREAM)
-
- def connect(self):
- """
- Connect to the qtest socket.
-
- @raise socket.error on socket connection errors
- """
- self._sock.connect(self._address)
- self._sockfile = self._sock.makefile()
-
- def accept(self):
- """
- Await connection from QEMU.
-
- @raise socket.error on socket connection errors
- """
- self._sock, _ = self._sock.accept()
- self._sockfile = self._sock.makefile()
-
- def cmd(self, qtest_cmd):
- """
- Send a qtest command on the wire.
-
- @param qtest_cmd: qtest command text to be sent
- """
- self._sock.sendall((qtest_cmd + "\n").encode('utf-8'))
- resp = self._sockfile.readline()
- return resp
-
- def close(self):
- self._sock.close()
- self._sockfile.close()
-
- def settimeout(self, timeout):
- self._sock.settimeout(timeout)
-
-
-class QEMUQtestMachine(qemu.QEMUMachine):
- '''A QEMU VM'''
-
- def __init__(self, binary, args=None, name=None, test_dir="/var/tmp",
- socket_scm_helper=None):
- if name is None:
- name = "qemu-%d" % os.getpid()
- super(QEMUQtestMachine,
- self).__init__(binary, args, name=name, test_dir=test_dir,
- socket_scm_helper=socket_scm_helper)
- self._qtest = None
- self._qtest_path = os.path.join(test_dir, name + "-qtest.sock")
-
- def _base_args(self):
- args = super(QEMUQtestMachine, self)._base_args()
- args.extend(['-qtest', 'unix:path=' + self._qtest_path,
- '-machine', 'accel=qtest'])
- return args
-
- def _pre_launch(self):
- super(QEMUQtestMachine, self)._pre_launch()
- self._qtest = QEMUQtestProtocol(self._qtest_path, server=True)
-
- def _post_launch(self):
- super(QEMUQtestMachine, self)._post_launch()
- self._qtest.accept()
-
- def _post_shutdown(self):
- super(QEMUQtestMachine, self)._post_shutdown()
- self._remove_if_exists(self._qtest_path)
-
- def qtest(self, cmd):
- '''Send a qtest command to guest'''
- return self._qtest.cmd(cmd)
import subprocess
import json
from graphviz import Digraph
+
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'python'))
from qemu import MonitorResponseError
--- /dev/null
+ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+BUILD_DIR ?= .
+
+LIBSLIRP = $(BUILD_DIR)/libslirp.a
+
+all: $(LIBSLIRP)
+
+SRCS := $(wildcard src/*.c)
+OBJS := $(SRCS:%.c=$(BUILD_DIR)/%.o)
+DEPS := $(OBJS:%.o=%.d)
+
+INC_DIRS := $(BUILD_DIR)/src
+INC_FLAGS := $(addprefix -I,$(INC_DIRS))
+
+override CFLAGS += \
+ -DG_LOG_DOMAIN='"Slirp"' \
+ $(shell $(PKG_CONFIG) --cflags glib-2.0) \
+ $(INC_FLAGS) \
+ -MMD -MP
+override LDFLAGS += $(shell $(PKG_CONFIG) --libs glib-2.0)
+
+$(LIBSLIRP): $(OBJS)
+
+.PHONY: clean
+
+clean:
+ rm -r $(OBJS) $(DEPS) $(LIBSLIRP)
+
+$(BUILD_DIR)/src/%.o: $(ROOT_DIR)/src/%.c
+ @$(MKDIR_P) $(dir $@)
+ $(call quiet-command,$(CC) $(CFLAGS) -c -o $@ $<,"CC","$@")
+
+%.a:
+ $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"AR","$@")
+
+PKG_CONFIG ?= pkg-config
+MKDIR_P ?= mkdir -p
+quiet-command-run = $(if $(V),,$(if $2,printf " %-7s %s\n" $2 $3 && ))$1
+quiet-@ = $(if $(V),,@)
+quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3)
+
+print-%:
+ @echo '$*=$($*)'
+
+.SUFFIXES:
+
+-include $(DEPS)
+++ /dev/null
-slirp-obj-y = slirp.mo
-
-slirp.mo-objs = \
- arp_table.o \
- bootp.o \
- cksum.o \
- dhcpv6.o \
- dnssearch.o \
- if.o \
- ip6_icmp.o \
- ip6_input.o \
- ip6_output.o \
- ip_icmp.o \
- ip_input.o \
- ip_output.o \
- mbuf.o \
- misc.o \
- ncsi.o \
- ndp_table.o \
- sbuf.o \
- slirp.o \
- socket.o \
- state.o \
- tcp_input.o \
- tcp_output.o \
- tcp_subr.o \
- tcp_timer.o \
- tftp.o \
- udp.o \
- udp6.o \
- util.o \
- $(NULL)
-
-slirp.mo-cflags = -DG_LOG_DOMAIN=\"Slirp\" -DWITH_QEMU
+++ /dev/null
-/*
- * ARP table
- *
- * Copyright (c) 2011 AdaCore
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "slirp.h"
-
-#include <string.h>
-
-void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN])
-{
- const uint32_t broadcast_addr =
- ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr;
- ArpTable *arptbl = &slirp->arp_table;
- int i;
-
- DEBUG_CALL("arp_table_add");
- DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr}));
- DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
- ethaddr[0], ethaddr[1], ethaddr[2],
- ethaddr[3], ethaddr[4], ethaddr[5]);
-
- if (ip_addr == 0 || ip_addr == 0xffffffff || ip_addr == broadcast_addr) {
- /* Do not register broadcast addresses */
- return;
- }
-
- /* Search for an entry */
- for (i = 0; i < ARP_TABLE_SIZE; i++) {
- if (arptbl->table[i].ar_sip == ip_addr) {
- /* Update the entry */
- memcpy(arptbl->table[i].ar_sha, ethaddr, ETH_ALEN);
- return;
- }
- }
-
- /* No entry found, create a new one */
- arptbl->table[arptbl->next_victim].ar_sip = ip_addr;
- memcpy(arptbl->table[arptbl->next_victim].ar_sha, ethaddr, ETH_ALEN);
- arptbl->next_victim = (arptbl->next_victim + 1) % ARP_TABLE_SIZE;
-}
-
-bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
- uint8_t out_ethaddr[ETH_ALEN])
-{
- const uint32_t broadcast_addr =
- ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr;
- ArpTable *arptbl = &slirp->arp_table;
- int i;
-
- DEBUG_CALL("arp_table_search");
- DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr}));
-
- /* If broadcast address */
- if (ip_addr == 0xffffffff || ip_addr == broadcast_addr) {
- /* return Ethernet broadcast address */
- memset(out_ethaddr, 0xff, ETH_ALEN);
- return 1;
- }
-
- for (i = 0; i < ARP_TABLE_SIZE; i++) {
- if (arptbl->table[i].ar_sip == ip_addr) {
- memcpy(out_ethaddr, arptbl->table[i].ar_sha, ETH_ALEN);
- DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
- out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
- out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
- return 1;
- }
- }
-
- return 0;
-}
+++ /dev/null
-/*
- * QEMU BOOTP/DHCP server
- *
- * Copyright (c) 2004 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "slirp.h"
-
-#if defined(_WIN32)
-/* Windows ntohl() returns an u_long value.
- * Add a type cast to match the format strings. */
-# define ntohl(n) ((uint32_t)ntohl(n))
-#endif
-
-/* XXX: only DHCP is supported */
-
-#define LEASE_TIME (24 * 3600)
-
-static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
-
-#define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__)
-
-static BOOTPClient *get_new_addr(Slirp *slirp, struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
- bc = &slirp->bootp_clients[i];
- if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
- goto found;
- }
- return NULL;
- found:
- bc = &slirp->bootp_clients[i];
- bc->allocated = 1;
- paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
- return bc;
-}
-
-static BOOTPClient *request_addr(Slirp *slirp, const struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- uint32_t req_addr = ntohl(paddr->s_addr);
- uint32_t dhcp_addr = ntohl(slirp->vdhcp_startaddr.s_addr);
- BOOTPClient *bc;
-
- if (req_addr >= dhcp_addr &&
- req_addr < (dhcp_addr + NB_BOOTP_CLIENTS)) {
- bc = &slirp->bootp_clients[req_addr - dhcp_addr];
- if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) {
- bc->allocated = 1;
- return bc;
- }
- }
- return NULL;
-}
-
-static BOOTPClient *find_addr(Slirp *slirp, struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
- if (!memcmp(macaddr, slirp->bootp_clients[i].macaddr, 6))
- goto found;
- }
- return NULL;
- found:
- bc = &slirp->bootp_clients[i];
- bc->allocated = 1;
- paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
- return bc;
-}
-
-static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
- struct in_addr *preq_addr)
-{
- const uint8_t *p, *p_end;
- int len, tag;
-
- *pmsg_type = 0;
- preq_addr->s_addr = htonl(0L);
-
- p = bp->bp_vend;
- p_end = p + DHCP_OPT_LEN;
- if (memcmp(p, rfc1533_cookie, 4) != 0)
- return;
- p += 4;
- while (p < p_end) {
- tag = p[0];
- if (tag == RFC1533_PAD) {
- p++;
- } else if (tag == RFC1533_END) {
- break;
- } else {
- p++;
- if (p >= p_end)
- break;
- len = *p++;
- if (p + len > p_end) {
- break;
- }
- DPRINTF("dhcp: tag=%d len=%d\n", tag, len);
-
- switch(tag) {
- case RFC2132_MSG_TYPE:
- if (len >= 1)
- *pmsg_type = p[0];
- break;
- case RFC2132_REQ_ADDR:
- if (len >= 4) {
- memcpy(&(preq_addr->s_addr), p, 4);
- }
- break;
- default:
- break;
- }
- p += len;
- }
- }
- if (*pmsg_type == DHCPREQUEST && preq_addr->s_addr == htonl(0L) &&
- bp->bp_ciaddr.s_addr) {
- memcpy(&(preq_addr->s_addr), &bp->bp_ciaddr, 4);
- }
-}
-
-static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
-{
- BOOTPClient *bc = NULL;
- struct mbuf *m;
- struct bootp_t *rbp;
- struct sockaddr_in saddr, daddr;
- struct in_addr preq_addr;
- int dhcp_msg_type, val;
- uint8_t *q;
- uint8_t *end;
- uint8_t client_ethaddr[ETH_ALEN];
-
- /* extract exact DHCP msg type */
- dhcp_decode(bp, &dhcp_msg_type, &preq_addr);
- DPRINTF("bootp packet op=%d msgtype=%d", bp->bp_op, dhcp_msg_type);
- if (preq_addr.s_addr != htonl(0L))
- DPRINTF(" req_addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
- else {
- DPRINTF("\n");
- }
-
- if (dhcp_msg_type == 0)
- dhcp_msg_type = DHCPREQUEST; /* Force reply for old BOOTP clients */
-
- if (dhcp_msg_type != DHCPDISCOVER &&
- dhcp_msg_type != DHCPREQUEST)
- return;
-
- /* Get client's hardware address from bootp request */
- memcpy(client_ethaddr, bp->bp_hwaddr, ETH_ALEN);
-
- m = m_get(slirp);
- if (!m) {
- return;
- }
- m->m_data += IF_MAXLINKHDR;
- rbp = (struct bootp_t *)m->m_data;
- m->m_data += sizeof(struct udpiphdr);
- memset(rbp, 0, sizeof(struct bootp_t));
-
- if (dhcp_msg_type == DHCPDISCOVER) {
- if (preq_addr.s_addr != htonl(0L)) {
- bc = request_addr(slirp, &preq_addr, client_ethaddr);
- if (bc) {
- daddr.sin_addr = preq_addr;
- }
- }
- if (!bc) {
- new_addr:
- bc = get_new_addr(slirp, &daddr.sin_addr, client_ethaddr);
- if (!bc) {
- DPRINTF("no address left\n");
- return;
- }
- }
- memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
- } else if (preq_addr.s_addr != htonl(0L)) {
- bc = request_addr(slirp, &preq_addr, client_ethaddr);
- if (bc) {
- daddr.sin_addr = preq_addr;
- memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
- } else {
- /* DHCPNAKs should be sent to broadcast */
- daddr.sin_addr.s_addr = 0xffffffff;
- }
- } else {
- bc = find_addr(slirp, &daddr.sin_addr, bp->bp_hwaddr);
- if (!bc) {
- /* if never assigned, behaves as if it was already
- assigned (windows fix because it remembers its address) */
- goto new_addr;
- }
- }
-
- /* Update ARP table for this IP address */
- arp_table_add(slirp, daddr.sin_addr.s_addr, client_ethaddr);
-
- saddr.sin_addr = slirp->vhost_addr;
- saddr.sin_port = htons(BOOTP_SERVER);
-
- daddr.sin_port = htons(BOOTP_CLIENT);
-
- rbp->bp_op = BOOTP_REPLY;
- rbp->bp_xid = bp->bp_xid;
- rbp->bp_htype = 1;
- rbp->bp_hlen = 6;
- memcpy(rbp->bp_hwaddr, bp->bp_hwaddr, ETH_ALEN);
-
- rbp->bp_yiaddr = daddr.sin_addr; /* Client IP address */
- rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */
-
- q = rbp->bp_vend;
- end = (uint8_t *)&rbp[1];
- memcpy(q, rfc1533_cookie, 4);
- q += 4;
-
- if (bc) {
- DPRINTF("%s addr=%08" PRIx32 "\n",
- (dhcp_msg_type == DHCPDISCOVER) ? "offered" : "ack'ed",
- ntohl(daddr.sin_addr.s_addr));
-
- if (dhcp_msg_type == DHCPDISCOVER) {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPOFFER;
- } else /* DHCPREQUEST */ {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPACK;
- }
-
- if (slirp->bootp_filename)
- snprintf((char *)rbp->bp_file, sizeof(rbp->bp_file), "%s",
- slirp->bootp_filename);
-
- *q++ = RFC2132_SRV_ID;
- *q++ = 4;
- memcpy(q, &saddr.sin_addr, 4);
- q += 4;
-
- *q++ = RFC1533_NETMASK;
- *q++ = 4;
- memcpy(q, &slirp->vnetwork_mask, 4);
- q += 4;
-
- if (!slirp->restricted) {
- *q++ = RFC1533_GATEWAY;
- *q++ = 4;
- memcpy(q, &saddr.sin_addr, 4);
- q += 4;
-
- *q++ = RFC1533_DNS;
- *q++ = 4;
- memcpy(q, &slirp->vnameserver_addr, 4);
- q += 4;
- }
-
- *q++ = RFC2132_LEASE_TIME;
- *q++ = 4;
- val = htonl(LEASE_TIME);
- memcpy(q, &val, 4);
- q += 4;
-
- if (*slirp->client_hostname) {
- val = strlen(slirp->client_hostname);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting host name option.");
- } else {
- *q++ = RFC1533_HOSTNAME;
- *q++ = val;
- memcpy(q, slirp->client_hostname, val);
- q += val;
- }
- }
-
- if (slirp->vdomainname) {
- val = strlen(slirp->vdomainname);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting domain name option.");
- } else {
- *q++ = RFC1533_DOMAINNAME;
- *q++ = val;
- memcpy(q, slirp->vdomainname, val);
- q += val;
- }
- }
-
- if (slirp->tftp_server_name) {
- val = strlen(slirp->tftp_server_name);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting tftp-server-name option.");
- } else {
- *q++ = RFC2132_TFTP_SERVER_NAME;
- *q++ = val;
- memcpy(q, slirp->tftp_server_name, val);
- q += val;
- }
- }
-
- if (slirp->vdnssearch) {
- val = slirp->vdnssearch_len;
- if (q + val >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting domain-search option.");
- } else {
- memcpy(q, slirp->vdnssearch, val);
- q += val;
- }
- }
- } else {
- static const char nak_msg[] = "requested address not available";
-
- DPRINTF("nak'ed addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
-
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPNAK;
-
- *q++ = RFC2132_MESSAGE;
- *q++ = sizeof(nak_msg) - 1;
- memcpy(q, nak_msg, sizeof(nak_msg) - 1);
- q += sizeof(nak_msg) - 1;
- }
- assert(q < end);
- *q = RFC1533_END;
-
- daddr.sin_addr.s_addr = 0xffffffffu;
-
- m->m_len = sizeof(struct bootp_t) -
- sizeof(struct ip) - sizeof(struct udphdr);
- udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
-}
-
-void bootp_input(struct mbuf *m)
-{
- struct bootp_t *bp = mtod(m, struct bootp_t *);
-
- if (bp->bp_op == BOOTP_REQUEST) {
- bootp_reply(m->slirp, bp);
- }
-}
+++ /dev/null
-/* bootp/dhcp defines */
-
-#ifndef SLIRP_BOOTP_H
-#define SLIRP_BOOTP_H
-
-#define BOOTP_SERVER 67
-#define BOOTP_CLIENT 68
-
-#define BOOTP_REQUEST 1
-#define BOOTP_REPLY 2
-
-#define RFC1533_COOKIE 99, 130, 83, 99
-#define RFC1533_PAD 0
-#define RFC1533_NETMASK 1
-#define RFC1533_TIMEOFFSET 2
-#define RFC1533_GATEWAY 3
-#define RFC1533_TIMESERVER 4
-#define RFC1533_IEN116NS 5
-#define RFC1533_DNS 6
-#define RFC1533_LOGSERVER 7
-#define RFC1533_COOKIESERVER 8
-#define RFC1533_LPRSERVER 9
-#define RFC1533_IMPRESSSERVER 10
-#define RFC1533_RESOURCESERVER 11
-#define RFC1533_HOSTNAME 12
-#define RFC1533_BOOTFILESIZE 13
-#define RFC1533_MERITDUMPFILE 14
-#define RFC1533_DOMAINNAME 15
-#define RFC1533_SWAPSERVER 16
-#define RFC1533_ROOTPATH 17
-#define RFC1533_EXTENSIONPATH 18
-#define RFC1533_IPFORWARDING 19
-#define RFC1533_IPSOURCEROUTING 20
-#define RFC1533_IPPOLICYFILTER 21
-#define RFC1533_IPMAXREASSEMBLY 22
-#define RFC1533_IPTTL 23
-#define RFC1533_IPMTU 24
-#define RFC1533_IPMTUPLATEAU 25
-#define RFC1533_INTMTU 26
-#define RFC1533_INTLOCALSUBNETS 27
-#define RFC1533_INTBROADCAST 28
-#define RFC1533_INTICMPDISCOVER 29
-#define RFC1533_INTICMPRESPOND 30
-#define RFC1533_INTROUTEDISCOVER 31
-#define RFC1533_INTROUTESOLICIT 32
-#define RFC1533_INTSTATICROUTES 33
-#define RFC1533_LLTRAILERENCAP 34
-#define RFC1533_LLARPCACHETMO 35
-#define RFC1533_LLETHERNETENCAP 36
-#define RFC1533_TCPTTL 37
-#define RFC1533_TCPKEEPALIVETMO 38
-#define RFC1533_TCPKEEPALIVEGB 39
-#define RFC1533_NISDOMAIN 40
-#define RFC1533_NISSERVER 41
-#define RFC1533_NTPSERVER 42
-#define RFC1533_VENDOR 43
-#define RFC1533_NBNS 44
-#define RFC1533_NBDD 45
-#define RFC1533_NBNT 46
-#define RFC1533_NBSCOPE 47
-#define RFC1533_XFS 48
-#define RFC1533_XDM 49
-
-#define RFC2132_REQ_ADDR 50
-#define RFC2132_LEASE_TIME 51
-#define RFC2132_MSG_TYPE 53
-#define RFC2132_SRV_ID 54
-#define RFC2132_PARAM_LIST 55
-#define RFC2132_MESSAGE 56
-#define RFC2132_MAX_SIZE 57
-#define RFC2132_RENEWAL_TIME 58
-#define RFC2132_REBIND_TIME 59
-#define RFC2132_TFTP_SERVER_NAME 66
-
-#define DHCPDISCOVER 1
-#define DHCPOFFER 2
-#define DHCPREQUEST 3
-#define DHCPACK 5
-#define DHCPNAK 6
-
-#define RFC1533_VENDOR_MAJOR 0
-#define RFC1533_VENDOR_MINOR 0
-
-#define RFC1533_VENDOR_MAGIC 128
-#define RFC1533_VENDOR_ADDPARM 129
-#define RFC1533_VENDOR_ETHDEV 130
-#define RFC1533_VENDOR_HOWTO 132
-#define RFC1533_VENDOR_MNUOPTS 160
-#define RFC1533_VENDOR_SELECTION 176
-#define RFC1533_VENDOR_MOTD 184
-#define RFC1533_VENDOR_NUMOFMOTD 8
-#define RFC1533_VENDOR_IMG 192
-#define RFC1533_VENDOR_NUMOFIMG 16
-
-#define RFC1533_END 255
-#define BOOTP_VENDOR_LEN 64
-#define DHCP_OPT_LEN 312
-
-struct bootp_t {
- struct ip ip;
- struct udphdr udp;
- uint8_t bp_op;
- uint8_t bp_htype;
- uint8_t bp_hlen;
- uint8_t bp_hops;
- uint32_t bp_xid;
- uint16_t bp_secs;
- uint16_t unused;
- struct in_addr bp_ciaddr;
- struct in_addr bp_yiaddr;
- struct in_addr bp_siaddr;
- struct in_addr bp_giaddr;
- uint8_t bp_hwaddr[16];
- uint8_t bp_sname[64];
- uint8_t bp_file[128];
- uint8_t bp_vend[DHCP_OPT_LEN];
-};
-
-typedef struct {
- uint16_t allocated;
- uint8_t macaddr[6];
-} BOOTPClient;
-
-#define NB_BOOTP_CLIENTS 16
-
-void bootp_input(struct mbuf *m);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1988, 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)in_cksum.c 8.1 (Berkeley) 6/10/93
- * in_cksum.c,v 1.2 1994/08/02 07:48:16 davidg Exp
- */
-
-#include "slirp.h"
-
-/*
- * Checksum routine for Internet Protocol family headers (Portable Version).
- *
- * This routine is very heavily used in the network
- * code and should be modified for each CPU to be as fast as possible.
- *
- * XXX Since we will never span more than 1 mbuf, we can optimise this
- */
-
-#define ADDCARRY(x) (x > 65535 ? x -= 65535 : x)
-#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; \
- (void)ADDCARRY(sum);}
-
-int cksum(struct mbuf *m, int len)
-{
- register uint16_t *w;
- register int sum = 0;
- register int mlen = 0;
- int byte_swapped = 0;
-
- union {
- uint8_t c[2];
- uint16_t s;
- } s_util;
- union {
- uint16_t s[2];
- uint32_t l;
- } l_util;
-
- if (m->m_len == 0)
- goto cont;
- w = mtod(m, uint16_t *);
-
- mlen = m->m_len;
-
- if (len < mlen)
- mlen = len;
- len -= mlen;
- /*
- * Force to even boundary.
- */
- if ((1 & (uintptr_t)w) && (mlen > 0)) {
- REDUCE;
- sum <<= 8;
- s_util.c[0] = *(uint8_t *)w;
- w = (uint16_t *)((int8_t *)w + 1);
- mlen--;
- byte_swapped = 1;
- }
- /*
- * Unroll the loop to make overhead from
- * branches &c small.
- */
- while ((mlen -= 32) >= 0) {
- sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
- sum += w[4]; sum += w[5]; sum += w[6]; sum += w[7];
- sum += w[8]; sum += w[9]; sum += w[10]; sum += w[11];
- sum += w[12]; sum += w[13]; sum += w[14]; sum += w[15];
- w += 16;
- }
- mlen += 32;
- while ((mlen -= 8) >= 0) {
- sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
- w += 4;
- }
- mlen += 8;
- if (mlen == 0 && byte_swapped == 0)
- goto cont;
- REDUCE;
- while ((mlen -= 2) >= 0) {
- sum += *w++;
- }
-
- if (byte_swapped) {
- REDUCE;
- sum <<= 8;
- if (mlen == -1) {
- s_util.c[1] = *(uint8_t *)w;
- sum += s_util.s;
- mlen = 0;
- } else
-
- mlen = -1;
- } else if (mlen == -1)
- s_util.c[0] = *(uint8_t *)w;
-
-cont:
- if (len) {
- DEBUG_ERROR("cksum: out of data");
- DEBUG_ERROR(" len = %d", len);
- }
- if (mlen == -1) {
- /* The last mbuf has odd # of bytes. Follow the
- standard (the odd byte may be shifted left by 8 bits
- or not as determined by endian-ness of the machine) */
- s_util.c[1] = 0;
- sum += s_util.s;
- }
- REDUCE;
- return (~sum & 0xffff);
-}
-
-int ip6_cksum(struct mbuf *m)
-{
- /* TODO: Optimize this by being able to pass the ip6_pseudohdr to cksum
- * separately from the mbuf */
- struct ip6 save_ip, *ip = mtod(m, struct ip6 *);
- struct ip6_pseudohdr *ih = mtod(m, struct ip6_pseudohdr *);
- int sum;
-
- save_ip = *ip;
-
- ih->ih_src = save_ip.ip_src;
- ih->ih_dst = save_ip.ip_dst;
- ih->ih_pl = htonl((uint32_t)ntohs(save_ip.ip_pl));
- ih->ih_zero_hi = 0;
- ih->ih_zero_lo = 0;
- ih->ih_nh = save_ip.ip_nh;
-
- sum = cksum(m, ((int)sizeof(struct ip6_pseudohdr))
- + ntohl(ih->ih_pl));
-
- *ip = save_ip;
-
- return sum;
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef DEBUG_H_
-#define DEBUG_H_
-
-#define DBG_CALL (1 << 0)
-#define DBG_MISC (1 << 1)
-#define DBG_ERROR (1 << 2)
-#define DBG_TFTP (1 << 3)
-
-extern int slirp_debug;
-
-#define DEBUG_CALL(fmt, ...) do { \
- if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \
- g_debug(fmt "...", ##__VA_ARGS__); \
- } \
-} while (0)
-
-#define DEBUG_ARG(fmt, ...) do { \
- if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \
- g_debug(" " fmt, ##__VA_ARGS__); \
- } \
-} while (0)
-
-#define DEBUG_MISC(fmt, ...) do { \
- if (G_UNLIKELY(slirp_debug & DBG_MISC)) { \
- g_debug(fmt, ##__VA_ARGS__); \
- } \
-} while (0)
-
-#define DEBUG_ERROR(fmt, ...) do { \
- if (G_UNLIKELY(slirp_debug & DBG_ERROR)) { \
- g_debug(fmt, ##__VA_ARGS__); \
- } \
-} while (0)
-
-#define DEBUG_TFTP(fmt, ...) do { \
- if (G_UNLIKELY(slirp_debug & DBG_TFTP)) { \
- g_debug(fmt, ##__VA_ARGS__); \
- } \
-} while (0)
-
-#endif /* DEBUG_H_ */
+++ /dev/null
-/*
- * SLIRP stateless DHCPv6
- *
- * We only support stateless DHCPv6, e.g. for network booting.
- * See RFC 3315, RFC 3736, RFC 3646 and RFC 5970 for details.
- *
- * Copyright 2016 Thomas Huth, Red Hat Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License,
- * or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "slirp.h"
-#include "dhcpv6.h"
-
-/* DHCPv6 message types */
-#define MSGTYPE_REPLY 7
-#define MSGTYPE_INFO_REQUEST 11
-
-/* DHCPv6 option types */
-#define OPTION_CLIENTID 1
-#define OPTION_IAADDR 5
-#define OPTION_ORO 6
-#define OPTION_DNS_SERVERS 23
-#define OPTION_BOOTFILE_URL 59
-
-struct requested_infos {
- uint8_t *client_id;
- int client_id_len;
- bool want_dns;
- bool want_boot_url;
-};
-
-/**
- * Analyze the info request message sent by the client to see what data it
- * provided and what it wants to have. The information is gathered in the
- * "requested_infos" struct. Note that client_id (if provided) points into
- * the odata region, thus the caller must keep odata valid as long as it
- * needs to access the requested_infos struct.
- */
-static int dhcpv6_parse_info_request(Slirp *slirp, uint8_t *odata, int olen,
- struct requested_infos *ri)
-{
- int i, req_opt;
-
- while (olen > 4) {
- /* Parse one option */
- int option = odata[0] << 8 | odata[1];
- int len = odata[2] << 8 | odata[3];
-
- if (len + 4 > olen) {
- slirp->cb->guest_error("Guest sent bad DHCPv6 packet!", slirp->opaque);
- return -E2BIG;
- }
-
- switch (option) {
- case OPTION_IAADDR:
- /* According to RFC3315, we must discard requests with IA option */
- return -EINVAL;
- case OPTION_CLIENTID:
- if (len > 256) {
- /* Avoid very long IDs which could cause problems later */
- return -E2BIG;
- }
- ri->client_id = odata + 4;
- ri->client_id_len = len;
- break;
- case OPTION_ORO: /* Option request option */
- if (len & 1) {
- return -EINVAL;
- }
- /* Check which options the client wants to have */
- for (i = 0; i < len; i += 2) {
- req_opt = odata[4 + i] << 8 | odata[4 + i + 1];
- switch (req_opt) {
- case OPTION_DNS_SERVERS:
- ri->want_dns = true;
- break;
- case OPTION_BOOTFILE_URL:
- ri->want_boot_url = true;
- break;
- default:
- DEBUG_MISC("dhcpv6: Unsupported option request %d",
- req_opt);
- }
- }
- break;
- default:
- DEBUG_MISC("dhcpv6 info req: Unsupported option %d, len=%d",
- option, len);
- }
-
- odata += len + 4;
- olen -= len + 4;
- }
-
- return 0;
-}
-
-
-/**
- * Handle information request messages
- */
-static void dhcpv6_info_request(Slirp *slirp, struct sockaddr_in6 *srcsas,
- uint32_t xid, uint8_t *odata, int olen)
-{
- struct requested_infos ri = { NULL };
- struct sockaddr_in6 sa6, da6;
- struct mbuf *m;
- uint8_t *resp;
-
- if (dhcpv6_parse_info_request(slirp, odata, olen, &ri) < 0) {
- return;
- }
-
- m = m_get(slirp);
- if (!m) {
- return;
- }
- memset(m->m_data, 0, m->m_size);
- m->m_data += IF_MAXLINKHDR;
- resp = (uint8_t *)m->m_data + sizeof(struct ip6) + sizeof(struct udphdr);
-
- /* Fill in response */
- *resp++ = MSGTYPE_REPLY;
- *resp++ = (uint8_t)(xid >> 16);
- *resp++ = (uint8_t)(xid >> 8);
- *resp++ = (uint8_t)xid;
-
- if (ri.client_id) {
- *resp++ = OPTION_CLIENTID >> 8; /* option-code high byte */
- *resp++ = OPTION_CLIENTID; /* option-code low byte */
- *resp++ = ri.client_id_len >> 8; /* option-len high byte */
- *resp++ = ri.client_id_len; /* option-len low byte */
- memcpy(resp, ri.client_id, ri.client_id_len);
- resp += ri.client_id_len;
- }
- if (ri.want_dns) {
- *resp++ = OPTION_DNS_SERVERS >> 8; /* option-code high byte */
- *resp++ = OPTION_DNS_SERVERS; /* option-code low byte */
- *resp++ = 0; /* option-len high byte */
- *resp++ = 16; /* option-len low byte */
- memcpy(resp, &slirp->vnameserver_addr6, 16);
- resp += 16;
- }
- if (ri.want_boot_url) {
- uint8_t *sa = slirp->vhost_addr6.s6_addr;
- int slen, smaxlen;
-
- *resp++ = OPTION_BOOTFILE_URL >> 8; /* option-code high byte */
- *resp++ = OPTION_BOOTFILE_URL; /* option-code low byte */
- smaxlen = (uint8_t *)m->m_data + IF_MTU - (resp + 2);
- slen = snprintf((char *)resp + 2, smaxlen,
- "tftp://[%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
- "%02x%02x:%02x%02x:%02x%02x:%02x%02x]/%s",
- sa[0], sa[1], sa[2], sa[3], sa[4], sa[5], sa[6], sa[7],
- sa[8], sa[9], sa[10], sa[11], sa[12], sa[13], sa[14],
- sa[15], slirp->bootp_filename);
- slen = MIN(slen, smaxlen);
- *resp++ = slen >> 8; /* option-len high byte */
- *resp++ = slen; /* option-len low byte */
- resp += slen;
- }
-
- sa6.sin6_addr = slirp->vhost_addr6;
- sa6.sin6_port = DHCPV6_SERVER_PORT;
- da6.sin6_addr = srcsas->sin6_addr;
- da6.sin6_port = srcsas->sin6_port;
- m->m_data += sizeof(struct ip6) + sizeof(struct udphdr);
- m->m_len = resp - (uint8_t *)m->m_data;
- udp6_output(NULL, m, &sa6, &da6);
-}
-
-/**
- * Handle DHCPv6 messages sent by the client
- */
-void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m)
-{
- uint8_t *data = (uint8_t *)m->m_data + sizeof(struct udphdr);
- int data_len = m->m_len - sizeof(struct udphdr);
- uint32_t xid;
-
- if (data_len < 4) {
- return;
- }
-
- xid = ntohl(*(uint32_t *)data) & 0xffffff;
-
- switch (data[0]) {
- case MSGTYPE_INFO_REQUEST:
- dhcpv6_info_request(m->slirp, srcsas, xid, &data[4], data_len - 4);
- break;
- default:
- DEBUG_MISC("dhcpv6_input: Unsupported message type 0x%x", data[0]);
- }
-}
+++ /dev/null
-/*
- * Definitions and prototypes for SLIRP stateless DHCPv6
- *
- * Copyright 2016 Thomas Huth, Red Hat Inc.
- *
- * This work is licensed under the terms of the GNU GPL, version 2
- * or later. See the COPYING file in the top-level directory.
- */
-#ifndef SLIRP_DHCPV6_H
-#define SLIRP_DHCPV6_H
-
-#define DHCPV6_SERVER_PORT 547
-
-#define ALLDHCP_MULTICAST { .s6_addr = \
- { 0xff, 0x02, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x01, 0x00, 0x02 } }
-
-#define in6_dhcp_multicast(a)\
- in6_equal(a, &(struct in6_addr)ALLDHCP_MULTICAST)
-
-void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m);
-
-#endif
+++ /dev/null
-/*
- * Domain search option for DHCP (RFC 3397)
- *
- * Copyright (c) 2012 Klaus Stengel
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "slirp.h"
-
-static const uint8_t RFC3397_OPT_DOMAIN_SEARCH = 119;
-static const uint8_t MAX_OPT_LEN = 255;
-static const uint8_t OPT_HEADER_LEN = 2;
-static const uint8_t REFERENCE_LEN = 2;
-
-struct compact_domain;
-
-typedef struct compact_domain {
- struct compact_domain *self;
- struct compact_domain *refdom;
- uint8_t *labels;
- size_t len;
- size_t common_octets;
-} CompactDomain;
-
-static size_t
-domain_suffix_diffoff(const CompactDomain *a, const CompactDomain *b)
-{
- size_t la = a->len, lb = b->len;
- uint8_t *da = a->labels + la, *db = b->labels + lb;
- size_t i, lm = (la < lb) ? la : lb;
-
- for (i = 0; i < lm; i++) {
- da--; db--;
- if (*da != *db) {
- break;
- }
- }
- return i;
-}
-
-static int domain_suffix_ord(const void *cva, const void *cvb)
-{
- const CompactDomain *a = cva, *b = cvb;
- size_t la = a->len, lb = b->len;
- size_t doff = domain_suffix_diffoff(a, b);
- uint8_t ca = a->labels[la - doff];
- uint8_t cb = b->labels[lb - doff];
-
- if (ca < cb) {
- return -1;
- }
- if (ca > cb) {
- return 1;
- }
- if (la < lb) {
- return -1;
- }
- if (la > lb) {
- return 1;
- }
- return 0;
-}
-
-static size_t domain_common_label(CompactDomain *a, CompactDomain *b)
-{
- size_t res, doff = domain_suffix_diffoff(a, b);
- uint8_t *first_eq_pos = a->labels + (a->len - doff);
- uint8_t *label = a->labels;
-
- while (*label && label < first_eq_pos) {
- label += *label + 1;
- }
- res = a->len - (label - a->labels);
- /* only report if it can help to reduce the packet size */
- return (res > REFERENCE_LEN) ? res : 0;
-}
-
-static void domain_fixup_order(CompactDomain *cd, size_t n)
-{
- size_t i;
-
- for (i = 0; i < n; i++) {
- CompactDomain *cur = cd + i, *next = cd[i].self;
-
- while (!cur->common_octets) {
- CompactDomain *tmp = next->self; /* backup target value */
-
- next->self = cur;
- cur->common_octets++;
-
- cur = next;
- next = tmp;
- }
- }
-}
-
-static void domain_mklabels(CompactDomain *cd, const char *input)
-{
- uint8_t *len_marker = cd->labels;
- uint8_t *output = len_marker; /* pre-incremented */
- const char *in = input;
- char cur_chr;
- size_t len = 0;
-
- if (cd->len == 0) {
- goto fail;
- }
- cd->len++;
-
- do {
- cur_chr = *in++;
- if (cur_chr == '.' || cur_chr == '\0') {
- len = output - len_marker;
- if ((len == 0 && cur_chr == '.') || len >= 64) {
- goto fail;
- }
- *len_marker = len;
-
- output++;
- len_marker = output;
- } else {
- output++;
- *output = cur_chr;
- }
- } while (cur_chr != '\0');
-
- /* ensure proper zero-termination */
- if (len != 0) {
- *len_marker = 0;
- cd->len++;
- }
- return;
-
-fail:
- g_warning("failed to parse domain name '%s'\n", input);
- cd->len = 0;
-}
-
-static void
-domain_mkxrefs(CompactDomain *doms, CompactDomain *last, size_t depth)
-{
- CompactDomain *i = doms, *target = doms;
-
- do {
- if (i->labels < target->labels) {
- target = i;
- }
- } while (i++ != last);
-
- for (i = doms; i != last; i++) {
- CompactDomain *group_last;
- size_t next_depth;
-
- if (i->common_octets == depth) {
- continue;
- }
-
- next_depth = -1;
- for (group_last = i; group_last != last; group_last++) {
- size_t co = group_last->common_octets;
- if (co <= depth) {
- break;
- }
- if (co < next_depth) {
- next_depth = co;
- }
- }
- domain_mkxrefs(i, group_last, next_depth);
-
- i = group_last;
- if (i == last) {
- break;
- }
- }
-
- if (depth == 0) {
- return;
- }
-
- i = doms;
- do {
- if (i != target && i->refdom == NULL) {
- i->refdom = target;
- i->common_octets = depth;
- }
- } while (i++ != last);
-}
-
-static size_t domain_compactify(CompactDomain *domains, size_t n)
-{
- uint8_t *start = domains->self->labels, *outptr = start;
- size_t i;
-
- for (i = 0; i < n; i++) {
- CompactDomain *cd = domains[i].self;
- CompactDomain *rd = cd->refdom;
-
- if (rd != NULL) {
- size_t moff = (rd->labels - start)
- + (rd->len - cd->common_octets);
- if (moff < 0x3FFFu) {
- cd->len -= cd->common_octets - 2;
- cd->labels[cd->len - 1] = moff & 0xFFu;
- cd->labels[cd->len - 2] = 0xC0u | (moff >> 8);
- }
- }
-
- if (cd->labels != outptr) {
- memmove(outptr, cd->labels, cd->len);
- cd->labels = outptr;
- }
- outptr += cd->len;
- }
- return outptr - start;
-}
-
-int translate_dnssearch(Slirp *s, const char **names)
-{
- size_t blocks, bsrc_start, bsrc_end, bdst_start;
- size_t i, num_domains, memreq = 0;
- uint8_t *result = NULL, *outptr;
- CompactDomain *domains = NULL;
- const char **nameptr = names;
-
- while (*nameptr != NULL) {
- nameptr++;
- }
-
- num_domains = nameptr - names;
- if (num_domains == 0) {
- return -2;
- }
-
- domains = g_malloc(num_domains * sizeof(*domains));
-
- for (i = 0; i < num_domains; i++) {
- size_t nlen = strlen(names[i]);
- memreq += nlen + 2; /* 1 zero octet + 1 label length octet */
- domains[i].self = domains + i;
- domains[i].len = nlen;
- domains[i].common_octets = 0;
- domains[i].refdom = NULL;
- }
-
- /* reserve extra 2 header bytes for each 255 bytes of output */
- memreq += DIV_ROUND_UP(memreq, MAX_OPT_LEN) * OPT_HEADER_LEN;
- result = g_malloc(memreq * sizeof(*result));
-
- outptr = result;
- for (i = 0; i < num_domains; i++) {
- domains[i].labels = outptr;
- domain_mklabels(domains + i, names[i]);
- outptr += domains[i].len;
- }
-
- if (outptr == result) {
- g_free(domains);
- g_free(result);
- return -1;
- }
-
- qsort(domains, num_domains, sizeof(*domains), domain_suffix_ord);
- domain_fixup_order(domains, num_domains);
-
- for (i = 1; i < num_domains; i++) {
- size_t cl = domain_common_label(domains + i - 1, domains + i);
- domains[i - 1].common_octets = cl;
- }
-
- domain_mkxrefs(domains, domains + num_domains - 1, 0);
- memreq = domain_compactify(domains, num_domains);
-
- blocks = DIV_ROUND_UP(memreq, MAX_OPT_LEN);
- bsrc_end = memreq;
- bsrc_start = (blocks - 1) * MAX_OPT_LEN;
- bdst_start = bsrc_start + blocks * OPT_HEADER_LEN;
- memreq += blocks * OPT_HEADER_LEN;
-
- while (blocks--) {
- size_t len = bsrc_end - bsrc_start;
- memmove(result + bdst_start, result + bsrc_start, len);
- result[bdst_start - 2] = RFC3397_OPT_DOMAIN_SEARCH;
- result[bdst_start - 1] = len;
- bsrc_end = bsrc_start;
- bsrc_start -= MAX_OPT_LEN;
- bdst_start -= MAX_OPT_LEN + OPT_HEADER_LEN;
- }
-
- g_free(domains);
- s->vdnssearch = result;
- s->vdnssearch_len = memreq;
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-static void
-ifs_insque(struct mbuf *ifm, struct mbuf *ifmhead)
-{
- ifm->ifs_next = ifmhead->ifs_next;
- ifmhead->ifs_next = ifm;
- ifm->ifs_prev = ifmhead;
- ifm->ifs_next->ifs_prev = ifm;
-}
-
-static void
-ifs_remque(struct mbuf *ifm)
-{
- ifm->ifs_prev->ifs_next = ifm->ifs_next;
- ifm->ifs_next->ifs_prev = ifm->ifs_prev;
-}
-
-void
-if_init(Slirp *slirp)
-{
- slirp->if_fastq.qh_link = slirp->if_fastq.qh_rlink = &slirp->if_fastq;
- slirp->if_batchq.qh_link = slirp->if_batchq.qh_rlink = &slirp->if_batchq;
-}
-
-/*
- * if_output: Queue packet into an output queue.
- * There are 2 output queue's, if_fastq and if_batchq.
- * Each output queue is a doubly linked list of double linked lists
- * of mbufs, each list belonging to one "session" (socket). This
- * way, we can output packets fairly by sending one packet from each
- * session, instead of all the packets from one session, then all packets
- * from the next session, etc. Packets on the if_fastq get absolute
- * priority, but if one session hogs the link, it gets "downgraded"
- * to the batchq until it runs out of packets, then it'll return
- * to the fastq (eg. if the user does an ls -alR in a telnet session,
- * it'll temporarily get downgraded to the batchq)
- */
-void
-if_output(struct socket *so, struct mbuf *ifm)
-{
- Slirp *slirp = ifm->slirp;
- struct mbuf *ifq;
- int on_fastq = 1;
-
- DEBUG_CALL("if_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("ifm = %p", ifm);
-
- /*
- * First remove the mbuf from m_usedlist,
- * since we're gonna use m_next and m_prev ourselves
- * XXX Shouldn't need this, gotta change dtom() etc.
- */
- if (ifm->m_flags & M_USEDLIST) {
- remque(ifm);
- ifm->m_flags &= ~M_USEDLIST;
- }
-
- /*
- * See if there's already a batchq list for this session.
- * This can include an interactive session, which should go on fastq,
- * but gets too greedy... hence it'll be downgraded from fastq to batchq.
- * We mustn't put this packet back on the fastq (or we'll send it out of order)
- * XXX add cache here?
- */
- if (so) {
- for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
- (struct quehead *) ifq != &slirp->if_batchq;
- ifq = ifq->ifq_prev) {
- if (so == ifq->ifq_so) {
- /* A match! */
- ifm->ifq_so = so;
- ifs_insque(ifm, ifq->ifs_prev);
- goto diddit;
- }
- }
- }
-
- /* No match, check which queue to put it on */
- if (so && (so->so_iptos & IPTOS_LOWDELAY)) {
- ifq = (struct mbuf *) slirp->if_fastq.qh_rlink;
- on_fastq = 1;
- /*
- * Check if this packet is a part of the last
- * packet's session
- */
- if (ifq->ifq_so == so) {
- ifm->ifq_so = so;
- ifs_insque(ifm, ifq->ifs_prev);
- goto diddit;
- }
- } else {
- ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
- }
-
- /* Create a new doubly linked list for this session */
- ifm->ifq_so = so;
- ifs_init(ifm);
- insque(ifm, ifq);
-
-diddit:
- if (so) {
- /* Update *_queued */
- so->so_queued++;
- so->so_nqueued++;
- /*
- * Check if the interactive session should be downgraded to
- * the batchq. A session is downgraded if it has queued 6
- * packets without pausing, and at least 3 of those packets
- * have been sent over the link
- * (XXX These are arbitrary numbers, probably not optimal..)
- */
- if (on_fastq && ((so->so_nqueued >= 6) &&
- (so->so_nqueued - so->so_queued) >= 3)) {
-
- /* Remove from current queue... */
- remque(ifm->ifs_next);
-
- /* ...And insert in the new. That'll teach ya! */
- insque(ifm->ifs_next, &slirp->if_batchq);
- }
- }
-
- /*
- * This prevents us from malloc()ing too many mbufs
- */
- if_start(ifm->slirp);
-}
-
-/*
- * Send one packet from each session.
- * If there are packets on the fastq, they are sent FIFO, before
- * everything else. Then we choose the first packet from each
- * batchq session (socket) and send it.
- * For example, if there are 3 ftp sessions fighting for bandwidth,
- * one packet will be sent from the first session, then one packet
- * from the second session, then one packet from the third.
- */
-void if_start(Slirp *slirp)
-{
- uint64_t now = slirp->cb->clock_get_ns(slirp->opaque);
- bool from_batchq = false;
- struct mbuf *ifm, *ifm_next, *ifqt;
-
- DEBUG_CALL("if_start");
-
- if (slirp->if_start_busy) {
- return;
- }
- slirp->if_start_busy = true;
-
- struct mbuf *batch_head = NULL;
- if (slirp->if_batchq.qh_link != &slirp->if_batchq) {
- batch_head = (struct mbuf *) slirp->if_batchq.qh_link;
- }
-
- if (slirp->if_fastq.qh_link != &slirp->if_fastq) {
- ifm_next = (struct mbuf *) slirp->if_fastq.qh_link;
- } else if (batch_head) {
- /* Nothing on fastq, pick up from batchq */
- ifm_next = batch_head;
- from_batchq = true;
- } else {
- ifm_next = NULL;
- }
-
- while (ifm_next) {
- ifm = ifm_next;
-
- ifm_next = ifm->ifq_next;
- if ((struct quehead *) ifm_next == &slirp->if_fastq) {
- /* No more packets in fastq, switch to batchq */
- ifm_next = batch_head;
- from_batchq = true;
- }
- if ((struct quehead *) ifm_next == &slirp->if_batchq) {
- /* end of batchq */
- ifm_next = NULL;
- }
-
- /* Try to send packet unless it already expired */
- if (ifm->expiration_date >= now && !if_encap(slirp, ifm)) {
- /* Packet is delayed due to pending ARP or NDP resolution */
- continue;
- }
-
- /* Remove it from the queue */
- ifqt = ifm->ifq_prev;
- remque(ifm);
-
- /* If there are more packets for this session, re-queue them */
- if (ifm->ifs_next != ifm) {
- struct mbuf *next = ifm->ifs_next;
-
- insque(next, ifqt);
- ifs_remque(ifm);
- if (!from_batchq) {
- ifm_next = next;
- }
- }
-
- /* Update so_queued */
- if (ifm->ifq_so && --ifm->ifq_so->so_queued == 0) {
- /* If there's no more queued, reset nqueued */
- ifm->ifq_so->so_nqueued = 0;
- }
-
- m_free(ifm);
- }
-
- slirp->if_start_busy = false;
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef IF_H
-#define IF_H
-
-#define IF_COMPRESS 0x01 /* We want compression */
-#define IF_NOCOMPRESS 0x02 /* Do not do compression */
-#define IF_AUTOCOMP 0x04 /* Autodetect (default) */
-#define IF_NOCIDCOMP 0x08 /* CID compression */
-
-#define IF_MTU 1500
-#define IF_MRU 1500
-#define IF_COMP IF_AUTOCOMP /* Flags for compression */
-
-/* 2 for alignment, 14 for ethernet */
-#define IF_MAXLINKHDR (2 + ETH_HLEN)
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip.h 8.1 (Berkeley) 6/10/93
- * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
- */
-
-#ifndef IP_H
-#define IP_H
-
-#include <glib.h>
-
-#if G_BYTE_ORDER == G_BIG_ENDIAN
-# undef NTOHL
-# undef NTOHS
-# undef HTONL
-# undef HTONS
-# define NTOHL(d)
-# define NTOHS(d)
-# define HTONL(d)
-# define HTONS(d)
-#else
-# ifndef NTOHL
-# define NTOHL(d) ((d) = ntohl((d)))
-# endif
-# ifndef NTOHS
-# define NTOHS(d) ((d) = ntohs((uint16_t)(d)))
-# endif
-# ifndef HTONL
-# define HTONL(d) ((d) = htonl((d)))
-# endif
-# ifndef HTONS
-# define HTONS(d) ((d) = htons((uint16_t)(d)))
-# endif
-#endif
-
-typedef uint32_t n_long; /* long as received from the net */
-
-/*
- * Definitions for internet protocol version 4.
- * Per RFC 791, September 1981.
- */
-#define IPVERSION 4
-
-/*
- * Structure of an internet header, naked of options.
- */
-struct ip {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint8_t ip_v:4, /* version */
- ip_hl:4; /* header length */
-#else
- uint8_t ip_hl:4, /* header length */
- ip_v:4; /* version */
-#endif
- uint8_t ip_tos; /* type of service */
- uint16_t ip_len; /* total length */
- uint16_t ip_id; /* identification */
- uint16_t ip_off; /* fragment offset field */
-#define IP_DF 0x4000 /* don't fragment flag */
-#define IP_MF 0x2000 /* more fragments flag */
-#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
- uint8_t ip_ttl; /* time to live */
- uint8_t ip_p; /* protocol */
- uint16_t ip_sum; /* checksum */
- struct in_addr ip_src,ip_dst; /* source and dest address */
-} SLIRP_PACKED;
-
-#define IP_MAXPACKET 65535 /* maximum packet size */
-
-/*
- * Definitions for IP type of service (ip_tos)
- */
-#define IPTOS_LOWDELAY 0x10
-#define IPTOS_THROUGHPUT 0x08
-#define IPTOS_RELIABILITY 0x04
-
-/*
- * Definitions for options.
- */
-#define IPOPT_COPIED(o) ((o)&0x80)
-#define IPOPT_CLASS(o) ((o)&0x60)
-#define IPOPT_NUMBER(o) ((o)&0x1f)
-
-#define IPOPT_CONTROL 0x00
-#define IPOPT_RESERVED1 0x20
-#define IPOPT_DEBMEAS 0x40
-#define IPOPT_RESERVED2 0x60
-
-#define IPOPT_EOL 0 /* end of option list */
-#define IPOPT_NOP 1 /* no operation */
-
-#define IPOPT_RR 7 /* record packet route */
-#define IPOPT_TS 68 /* timestamp */
-#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
-#define IPOPT_LSRR 131 /* loose source route */
-#define IPOPT_SATID 136 /* satnet id */
-#define IPOPT_SSRR 137 /* strict source route */
-
-/*
- * Offsets to fields in options other than EOL and NOP.
- */
-#define IPOPT_OPTVAL 0 /* option ID */
-#define IPOPT_OLEN 1 /* option length */
-#define IPOPT_OFFSET 2 /* offset within option */
-#define IPOPT_MINOFF 4 /* min value of above */
-
-/*
- * Time stamp option structure.
- */
-struct ip_timestamp {
- uint8_t ipt_code; /* IPOPT_TS */
- uint8_t ipt_len; /* size of structure (variable) */
- uint8_t ipt_ptr; /* index of current entry */
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint8_t ipt_oflw:4, /* overflow counter */
- ipt_flg:4; /* flags, see below */
-#else
- uint8_t ipt_flg:4, /* flags, see below */
- ipt_oflw:4; /* overflow counter */
-#endif
- union ipt_timestamp {
- n_long ipt_time[1];
- struct ipt_ta {
- struct in_addr ipt_addr;
- n_long ipt_time;
- } ipt_ta[1];
- } ipt_timestamp;
-} SLIRP_PACKED;
-
-/* flag bits for ipt_flg */
-#define IPOPT_TS_TSONLY 0 /* timestamps only */
-#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
-#define IPOPT_TS_PRESPEC 3 /* specified modules only */
-
-/* bits for security (not byte swapped) */
-#define IPOPT_SECUR_UNCLASS 0x0000
-#define IPOPT_SECUR_CONFID 0xf135
-#define IPOPT_SECUR_EFTO 0x789a
-#define IPOPT_SECUR_MMMM 0xbc4d
-#define IPOPT_SECUR_RESTR 0xaf13
-#define IPOPT_SECUR_SECRET 0xd788
-#define IPOPT_SECUR_TOPSECRET 0x6bc5
-
-/*
- * Internet implementation parameters.
- */
-#define MAXTTL 255 /* maximum time to live (seconds) */
-#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
-#define IPFRAGTTL 60 /* time to live for frags, slowhz */
-#define IPTTLDEC 1 /* subtracted when forwarding */
-
-#define IP_MSS 576 /* default maximum segment size */
-
-#if GLIB_SIZEOF_VOID_P == 4
-struct mbuf_ptr {
- struct mbuf *mptr;
- uint32_t dummy;
-} SLIRP_PACKED;
-#else
-struct mbuf_ptr {
- struct mbuf *mptr;
-} SLIRP_PACKED;
-#endif
-struct qlink {
- void *next, *prev;
-};
-
-/*
- * Overlay for ip header used by other protocols (tcp, udp).
- */
-struct ipovly {
- struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
- uint8_t ih_x1; /* (unused) */
- uint8_t ih_pr; /* protocol */
- uint16_t ih_len; /* protocol length */
- struct in_addr ih_src; /* source internet address */
- struct in_addr ih_dst; /* destination internet address */
-} SLIRP_PACKED;
-
-/*
- * Ip reassembly queue structure. Each fragment
- * being reassembled is attached to one of these structures.
- * They are timed out after ipq_ttl drops to 0, and may also
- * be reclaimed if memory becomes tight.
- * size 28 bytes
- */
-struct ipq {
- struct qlink frag_link; /* to ip headers of fragments */
- struct qlink ip_link; /* to other reass headers */
- uint8_t ipq_ttl; /* time for reass q to live */
- uint8_t ipq_p; /* protocol of this fragment */
- uint16_t ipq_id; /* sequence id for reassembly */
- struct in_addr ipq_src,ipq_dst;
-};
-
-/*
- * Ip header, when holding a fragment.
- *
- * Note: ipf_link must be at same offset as frag_link above
- */
-struct ipasfrag {
- struct qlink ipf_link;
- struct ip ipf_ip;
-};
-
-G_STATIC_ASSERT(offsetof(struct ipq, frag_link) ==
- offsetof(struct ipasfrag, ipf_link));
-
-#define ipf_off ipf_ip.ip_off
-#define ipf_tos ipf_ip.ip_tos
-#define ipf_len ipf_ip.ip_len
-#define ipf_next ipf_link.next
-#define ipf_prev ipf_link.prev
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#ifndef SLIRP_IP6_H
-#define SLIRP_IP6_H
-
-#include <glib.h>
-#include <string.h>
-
-#define ALLNODES_MULTICAST { .s6_addr = \
- { 0xff, 0x02, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x01 } }
-
-#define SOLICITED_NODE_PREFIX { .s6_addr = \
- { 0xff, 0x02, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x01,\
- 0xff, 0x00, 0x00, 0x00 } }
-
-#define LINKLOCAL_ADDR { .s6_addr = \
- { 0xfe, 0x80, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x02 } }
-
-#define ZERO_ADDR { .s6_addr = \
- { 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00 } }
-
-static inline bool in6_equal(const struct in6_addr *a, const struct in6_addr *b)
-{
- return memcmp(a, b, sizeof(*a)) == 0;
-}
-
-static inline bool in6_equal_net(const struct in6_addr *a,
- const struct in6_addr *b,
- int prefix_len)
-{
- if (memcmp(a, b, prefix_len / 8) != 0) {
- return 0;
- }
-
- if (prefix_len % 8 == 0) {
- return 1;
- }
-
- return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8))
- == b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8));
-}
-
-static inline bool in6_equal_mach(const struct in6_addr *a,
- const struct in6_addr *b,
- int prefix_len)
-{
- if (memcmp(&(a->s6_addr[DIV_ROUND_UP(prefix_len, 8)]),
- &(b->s6_addr[DIV_ROUND_UP(prefix_len, 8)]),
- 16 - DIV_ROUND_UP(prefix_len, 8)) != 0) {
- return 0;
- }
-
- if (prefix_len % 8 == 0) {
- return 1;
- }
-
- return (a->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1))
- == (b->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1));
-}
-
-
-#define in6_equal_router(a)\
- ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\
- && in6_equal_mach(a, &slirp->vhost_addr6, slirp->vprefix_len))\
- || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\
- && in6_equal_mach(a, &slirp->vhost_addr6, 64)))
-
-#define in6_equal_dns(a)\
- ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\
- && in6_equal_mach(a, &slirp->vnameserver_addr6, slirp->vprefix_len))\
- || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\
- && in6_equal_mach(a, &slirp->vnameserver_addr6, 64)))
-
-#define in6_equal_host(a)\
- (in6_equal_router(a) || in6_equal_dns(a))
-
-#define in6_solicitednode_multicast(a)\
- (in6_equal_net(a, &(struct in6_addr)SOLICITED_NODE_PREFIX, 104))
-
-#define in6_zero(a)\
- (in6_equal(a, &(struct in6_addr)ZERO_ADDR))
-
-/* Compute emulated host MAC address from its ipv6 address */
-static inline void in6_compute_ethaddr(struct in6_addr ip,
- uint8_t eth[ETH_ALEN])
-{
- eth[0] = 0x52;
- eth[1] = 0x56;
- memcpy(ð[2], &ip.s6_addr[16 - (ETH_ALEN - 2)], ETH_ALEN - 2);
-}
-
-/*
- * Definitions for internet protocol version 6.
- * Per RFC 2460, December 1998.
- */
-#define IP6VERSION 6
-#define IP6_HOP_LIMIT 255
-
-/*
- * Structure of an internet header, naked of options.
- */
-struct ip6 {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint32_t
- ip_v:4, /* version */
- ip_tc_hi:4, /* traffic class */
- ip_tc_lo:4,
- ip_fl_hi:4, /* flow label */
- ip_fl_lo:16;
-#else
- uint32_t
- ip_tc_hi:4,
- ip_v:4,
- ip_fl_hi:4,
- ip_tc_lo:4,
- ip_fl_lo:16;
-#endif
- uint16_t ip_pl; /* payload length */
- uint8_t ip_nh; /* next header */
- uint8_t ip_hl; /* hop limit */
- struct in6_addr ip_src, ip_dst; /* source and dest address */
-};
-
-/*
- * IPv6 pseudo-header used by upper-layer protocols
- */
-struct ip6_pseudohdr {
- struct in6_addr ih_src; /* source internet address */
- struct in6_addr ih_dst; /* destination internet address */
- uint32_t ih_pl; /* upper-layer packet length */
- uint16_t ih_zero_hi; /* zero */
- uint8_t ih_zero_lo; /* zero */
- uint8_t ih_nh; /* next header */
-};
-
-/*
- * We don't want to mark these ip6 structs as packed as they are naturally
- * correctly aligned; instead assert that there is no stray padding.
- * If we marked the struct as packed then we would be unable to take
- * the address of any of the fields in it.
- */
-G_STATIC_ASSERT(sizeof(struct ip6) == 40);
-G_STATIC_ASSERT(sizeof(struct ip6_pseudohdr) == 40);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#include "slirp.h"
-#include "ip6_icmp.h"
-
-#define NDP_Interval g_rand_int_range(slirp->grand, \
- NDP_MinRtrAdvInterval, NDP_MaxRtrAdvInterval)
-
-static void ra_timer_handler(void *opaque)
-{
- Slirp *slirp = opaque;
-
- slirp->cb->timer_mod(slirp->ra_timer,
- slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval,
- slirp->opaque);
- ndp_send_ra(slirp);
-}
-
-void icmp6_init(Slirp *slirp)
-{
- if (!slirp->in6_enabled) {
- return;
- }
-
- slirp->ra_timer = slirp->cb->timer_new(ra_timer_handler, slirp, slirp->opaque);
- slirp->cb->timer_mod(slirp->ra_timer,
- slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval,
- slirp->opaque);
-}
-
-void icmp6_cleanup(Slirp *slirp)
-{
- if (!slirp->in6_enabled) {
- return;
- }
-
- slirp->cb->timer_free(slirp->ra_timer, slirp->opaque);
-}
-
-static void icmp6_send_echoreply(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
- struct icmp6 *icmp)
-{
- struct mbuf *t = m_get(slirp);
- t->m_len = sizeof(struct ip6) + ntohs(ip->ip_pl);
- memcpy(t->m_data, m->m_data, t->m_len);
-
- /* IPv6 Packet */
- struct ip6 *rip = mtod(t, struct ip6 *);
- rip->ip_dst = ip->ip_src;
- rip->ip_src = ip->ip_dst;
-
- /* ICMPv6 packet */
- t->m_data += sizeof(struct ip6);
- struct icmp6 *ricmp = mtod(t, struct icmp6 *);
- ricmp->icmp6_type = ICMP6_ECHO_REPLY;
- ricmp->icmp6_cksum = 0;
-
- /* Checksum */
- t->m_data -= sizeof(struct ip6);
- ricmp->icmp6_cksum = ip6_cksum(t);
-
- ip6_output(NULL, t, 0);
-}
-
-void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code)
-{
- Slirp *slirp = m->slirp;
- struct mbuf *t;
- struct ip6 *ip = mtod(m, struct ip6 *);
- char addrstr[INET6_ADDRSTRLEN];
-
- DEBUG_CALL("icmp6_send_error");
- DEBUG_ARG("type = %d, code = %d", type, code);
-
- if (IN6_IS_ADDR_MULTICAST(&ip->ip_src) ||
- in6_zero(&ip->ip_src)) {
- /* TODO icmp error? */
- return;
- }
-
- t = m_get(slirp);
-
- /* IPv6 packet */
- struct ip6 *rip = mtod(t, struct ip6 *);
- rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR;
- rip->ip_dst = ip->ip_src;
- inet_ntop(AF_INET6, &rip->ip_dst, addrstr, INET6_ADDRSTRLEN);
- DEBUG_ARG("target = %s", addrstr);
-
- rip->ip_nh = IPPROTO_ICMPV6;
- const int error_data_len = MIN(m->m_len,
- IF_MTU - (sizeof(struct ip6) + ICMP6_ERROR_MINLEN));
- rip->ip_pl = htons(ICMP6_ERROR_MINLEN + error_data_len);
- t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
-
- /* ICMPv6 packet */
- t->m_data += sizeof(struct ip6);
- struct icmp6 *ricmp = mtod(t, struct icmp6 *);
- ricmp->icmp6_type = type;
- ricmp->icmp6_code = code;
- ricmp->icmp6_cksum = 0;
-
- switch (type) {
- case ICMP6_UNREACH:
- case ICMP6_TIMXCEED:
- ricmp->icmp6_err.unused = 0;
- break;
- case ICMP6_TOOBIG:
- ricmp->icmp6_err.mtu = htonl(IF_MTU);
- break;
- case ICMP6_PARAMPROB:
- /* TODO: Handle this case */
- break;
- default:
- g_assert_not_reached();
- break;
- }
- t->m_data += ICMP6_ERROR_MINLEN;
- memcpy(t->m_data, m->m_data, error_data_len);
-
- /* Checksum */
- t->m_data -= ICMP6_ERROR_MINLEN;
- t->m_data -= sizeof(struct ip6);
- ricmp->icmp6_cksum = ip6_cksum(t);
-
- ip6_output(NULL, t, 0);
-}
-
-/*
- * Send NDP Router Advertisement
- */
-void ndp_send_ra(Slirp *slirp)
-{
- DEBUG_CALL("ndp_send_ra");
-
- /* Build IPv6 packet */
- struct mbuf *t = m_get(slirp);
- struct ip6 *rip = mtod(t, struct ip6 *);
- size_t pl_size = 0;
- struct in6_addr addr;
- uint32_t scope_id;
-
- rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR;
- rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST;
- rip->ip_nh = IPPROTO_ICMPV6;
-
- /* Build ICMPv6 packet */
- t->m_data += sizeof(struct ip6);
- struct icmp6 *ricmp = mtod(t, struct icmp6 *);
- ricmp->icmp6_type = ICMP6_NDP_RA;
- ricmp->icmp6_code = 0;
- ricmp->icmp6_cksum = 0;
-
- /* NDP */
- ricmp->icmp6_nra.chl = NDP_AdvCurHopLimit;
- ricmp->icmp6_nra.M = NDP_AdvManagedFlag;
- ricmp->icmp6_nra.O = NDP_AdvOtherConfigFlag;
- ricmp->icmp6_nra.reserved = 0;
- ricmp->icmp6_nra.lifetime = htons(NDP_AdvDefaultLifetime);
- ricmp->icmp6_nra.reach_time = htonl(NDP_AdvReachableTime);
- ricmp->icmp6_nra.retrans_time = htonl(NDP_AdvRetransTime);
- t->m_data += ICMP6_NDP_RA_MINLEN;
- pl_size += ICMP6_NDP_RA_MINLEN;
-
- /* Source link-layer address (NDP option) */
- struct ndpopt *opt = mtod(t, struct ndpopt *);
- opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE;
- opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
- in6_compute_ethaddr(rip->ip_src, opt->ndpopt_linklayer);
- t->m_data += NDPOPT_LINKLAYER_LEN;
- pl_size += NDPOPT_LINKLAYER_LEN;
-
- /* Prefix information (NDP option) */
- struct ndpopt *opt2 = mtod(t, struct ndpopt *);
- opt2->ndpopt_type = NDPOPT_PREFIX_INFO;
- opt2->ndpopt_len = NDPOPT_PREFIXINFO_LEN / 8;
- opt2->ndpopt_prefixinfo.prefix_length = slirp->vprefix_len;
- opt2->ndpopt_prefixinfo.L = 1;
- opt2->ndpopt_prefixinfo.A = 1;
- opt2->ndpopt_prefixinfo.reserved1 = 0;
- opt2->ndpopt_prefixinfo.valid_lt = htonl(NDP_AdvValidLifetime);
- opt2->ndpopt_prefixinfo.pref_lt = htonl(NDP_AdvPrefLifetime);
- opt2->ndpopt_prefixinfo.reserved2 = 0;
- opt2->ndpopt_prefixinfo.prefix = slirp->vprefix_addr6;
- t->m_data += NDPOPT_PREFIXINFO_LEN;
- pl_size += NDPOPT_PREFIXINFO_LEN;
-
- /* Prefix information (NDP option) */
- if (get_dns6_addr(&addr, &scope_id) >= 0) {
- /* Host system does have an IPv6 DNS server, announce our proxy. */
- struct ndpopt *opt3 = mtod(t, struct ndpopt *);
- opt3->ndpopt_type = NDPOPT_RDNSS;
- opt3->ndpopt_len = NDPOPT_RDNSS_LEN / 8;
- opt3->ndpopt_rdnss.reserved = 0;
- opt3->ndpopt_rdnss.lifetime = htonl(2 * NDP_MaxRtrAdvInterval);
- opt3->ndpopt_rdnss.addr = slirp->vnameserver_addr6;
- t->m_data += NDPOPT_RDNSS_LEN;
- pl_size += NDPOPT_RDNSS_LEN;
- }
-
- rip->ip_pl = htons(pl_size);
- t->m_data -= sizeof(struct ip6) + pl_size;
- t->m_len = sizeof(struct ip6) + pl_size;
-
- /* ICMPv6 Checksum */
- ricmp->icmp6_cksum = ip6_cksum(t);
-
- ip6_output(NULL, t, 0);
-}
-
-/*
- * Send NDP Neighbor Solitication
- */
-void ndp_send_ns(Slirp *slirp, struct in6_addr addr)
-{
- char addrstr[INET6_ADDRSTRLEN];
-
- inet_ntop(AF_INET6, &addr, addrstr, INET6_ADDRSTRLEN);
-
- DEBUG_CALL("ndp_send_ns");
- DEBUG_ARG("target = %s", addrstr);
-
- /* Build IPv6 packet */
- struct mbuf *t = m_get(slirp);
- struct ip6 *rip = mtod(t, struct ip6 *);
- rip->ip_src = slirp->vhost_addr6;
- rip->ip_dst = (struct in6_addr)SOLICITED_NODE_PREFIX;
- memcpy(&rip->ip_dst.s6_addr[13], &addr.s6_addr[13], 3);
- rip->ip_nh = IPPROTO_ICMPV6;
- rip->ip_pl = htons(ICMP6_NDP_NS_MINLEN + NDPOPT_LINKLAYER_LEN);
- t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
-
- /* Build ICMPv6 packet */
- t->m_data += sizeof(struct ip6);
- struct icmp6 *ricmp = mtod(t, struct icmp6 *);
- ricmp->icmp6_type = ICMP6_NDP_NS;
- ricmp->icmp6_code = 0;
- ricmp->icmp6_cksum = 0;
-
- /* NDP */
- ricmp->icmp6_nns.reserved = 0;
- ricmp->icmp6_nns.target = addr;
-
- /* Build NDP option */
- t->m_data += ICMP6_NDP_NS_MINLEN;
- struct ndpopt *opt = mtod(t, struct ndpopt *);
- opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE;
- opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
- in6_compute_ethaddr(slirp->vhost_addr6, opt->ndpopt_linklayer);
-
- /* ICMPv6 Checksum */
- t->m_data -= ICMP6_NDP_NA_MINLEN;
- t->m_data -= sizeof(struct ip6);
- ricmp->icmp6_cksum = ip6_cksum(t);
-
- ip6_output(NULL, t, 1);
-}
-
-/*
- * Send NDP Neighbor Advertisement
- */
-static void ndp_send_na(Slirp *slirp, struct ip6 *ip, struct icmp6 *icmp)
-{
- /* Build IPv6 packet */
- struct mbuf *t = m_get(slirp);
- struct ip6 *rip = mtod(t, struct ip6 *);
- rip->ip_src = icmp->icmp6_nns.target;
- if (in6_zero(&ip->ip_src)) {
- rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST;
- } else {
- rip->ip_dst = ip->ip_src;
- }
- rip->ip_nh = IPPROTO_ICMPV6;
- rip->ip_pl = htons(ICMP6_NDP_NA_MINLEN
- + NDPOPT_LINKLAYER_LEN);
- t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
-
- /* Build ICMPv6 packet */
- t->m_data += sizeof(struct ip6);
- struct icmp6 *ricmp = mtod(t, struct icmp6 *);
- ricmp->icmp6_type = ICMP6_NDP_NA;
- ricmp->icmp6_code = 0;
- ricmp->icmp6_cksum = 0;
-
- /* NDP */
- ricmp->icmp6_nna.R = NDP_IsRouter;
- ricmp->icmp6_nna.S = !IN6_IS_ADDR_MULTICAST(&rip->ip_dst);
- ricmp->icmp6_nna.O = 1;
- ricmp->icmp6_nna.reserved_hi = 0;
- ricmp->icmp6_nna.reserved_lo = 0;
- ricmp->icmp6_nna.target = icmp->icmp6_nns.target;
-
- /* Build NDP option */
- t->m_data += ICMP6_NDP_NA_MINLEN;
- struct ndpopt *opt = mtod(t, struct ndpopt *);
- opt->ndpopt_type = NDPOPT_LINKLAYER_TARGET;
- opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
- in6_compute_ethaddr(ricmp->icmp6_nna.target,
- opt->ndpopt_linklayer);
-
- /* ICMPv6 Checksum */
- t->m_data -= ICMP6_NDP_NA_MINLEN;
- t->m_data -= sizeof(struct ip6);
- ricmp->icmp6_cksum = ip6_cksum(t);
-
- ip6_output(NULL, t, 0);
-}
-
-/*
- * Process a NDP message
- */
-static void ndp_input(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
- struct icmp6 *icmp)
-{
- m->m_len += ETH_HLEN;
- m->m_data -= ETH_HLEN;
- struct ethhdr *eth = mtod(m, struct ethhdr *);
- m->m_len -= ETH_HLEN;
- m->m_data += ETH_HLEN;
-
- switch (icmp->icmp6_type) {
- case ICMP6_NDP_RS:
- DEBUG_CALL(" type = Router Solicitation");
- if (ip->ip_hl == 255
- && icmp->icmp6_code == 0
- && ntohs(ip->ip_pl) >= ICMP6_NDP_RS_MINLEN) {
- /* Gratuitous NDP */
- ndp_table_add(slirp, ip->ip_src, eth->h_source);
-
- ndp_send_ra(slirp);
- }
- break;
-
- case ICMP6_NDP_RA:
- DEBUG_CALL(" type = Router Advertisement");
- slirp->cb->guest_error("Warning: guest sent NDP RA, but shouldn't",
- slirp->opaque);
- break;
-
- case ICMP6_NDP_NS:
- DEBUG_CALL(" type = Neighbor Solicitation");
- if (ip->ip_hl == 255
- && icmp->icmp6_code == 0
- && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nns.target)
- && ntohs(ip->ip_pl) >= ICMP6_NDP_NS_MINLEN
- && (!in6_zero(&ip->ip_src)
- || in6_solicitednode_multicast(&ip->ip_dst))) {
- if (in6_equal_host(&icmp->icmp6_nns.target)) {
- /* Gratuitous NDP */
- ndp_table_add(slirp, ip->ip_src, eth->h_source);
- ndp_send_na(slirp, ip, icmp);
- }
- }
- break;
-
- case ICMP6_NDP_NA:
- DEBUG_CALL(" type = Neighbor Advertisement");
- if (ip->ip_hl == 255
- && icmp->icmp6_code == 0
- && ntohs(ip->ip_pl) >= ICMP6_NDP_NA_MINLEN
- && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nna.target)
- && (!IN6_IS_ADDR_MULTICAST(&ip->ip_dst)
- || icmp->icmp6_nna.S == 0)) {
- ndp_table_add(slirp, ip->ip_src, eth->h_source);
- }
- break;
-
- case ICMP6_NDP_REDIRECT:
- DEBUG_CALL(" type = Redirect");
- slirp->cb->guest_error(
- "Warning: guest sent NDP REDIRECT, but shouldn't", slirp->opaque);
- break;
- }
-}
-
-/*
- * Process a received ICMPv6 message.
- */
-void icmp6_input(struct mbuf *m)
-{
- struct icmp6 *icmp;
- struct ip6 *ip = mtod(m, struct ip6 *);
- Slirp *slirp = m->slirp;
- int hlen = sizeof(struct ip6);
-
- DEBUG_CALL("icmp6_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("m_len = %d", m->m_len);
-
- if (ntohs(ip->ip_pl) < ICMP6_MINLEN) {
- goto end;
- }
-
- if (ip6_cksum(m)) {
- goto end;
- }
-
- m->m_len -= hlen;
- m->m_data += hlen;
- icmp = mtod(m, struct icmp6 *);
- m->m_len += hlen;
- m->m_data -= hlen;
-
- DEBUG_ARG("icmp6_type = %d", icmp->icmp6_type);
- switch (icmp->icmp6_type) {
- case ICMP6_ECHO_REQUEST:
- if (in6_equal_host(&ip->ip_dst)) {
- icmp6_send_echoreply(m, slirp, ip, icmp);
- } else {
- /* TODO */
- g_critical("external icmpv6 not supported yet");
- }
- break;
-
- case ICMP6_NDP_RS:
- case ICMP6_NDP_RA:
- case ICMP6_NDP_NS:
- case ICMP6_NDP_NA:
- case ICMP6_NDP_REDIRECT:
- ndp_input(m, slirp, ip, icmp);
- break;
-
- case ICMP6_UNREACH:
- case ICMP6_TOOBIG:
- case ICMP6_TIMXCEED:
- case ICMP6_PARAMPROB:
- /* XXX? report error? close socket? */
- default:
- break;
- }
-
-end:
- m_free(m);
-}
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#ifndef SLIRP_IP6_ICMP_H
-#define SLIRP_IP6_ICMP_H
-
-/*
- * Interface Control Message Protocol version 6 Definitions.
- * Per RFC 4443, March 2006.
- *
- * Network Discover Protocol Definitions.
- * Per RFC 4861, September 2007.
- */
-
-struct icmp6_echo { /* Echo Messages */
- uint16_t id;
- uint16_t seq_num;
-};
-
-union icmp6_error_body {
- uint32_t unused;
- uint32_t pointer;
- uint32_t mtu;
-};
-
-/*
- * NDP Messages
- */
-struct ndp_rs { /* Router Solicitation Message */
- uint32_t reserved;
-};
-
-struct ndp_ra { /* Router Advertisement Message */
- uint8_t chl; /* Cur Hop Limit */
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint8_t
- M:1,
- O:1,
- reserved:6;
-#else
- uint8_t
- reserved:6,
- O:1,
- M:1;
-#endif
- uint16_t lifetime; /* Router Lifetime */
- uint32_t reach_time; /* Reachable Time */
- uint32_t retrans_time; /* Retrans Timer */
-};
-
-G_STATIC_ASSERT(sizeof(struct ndp_ra) == 12);
-
-struct ndp_ns { /* Neighbor Solicitation Message */
- uint32_t reserved;
- struct in6_addr target; /* Target Address */
-};
-
-G_STATIC_ASSERT(sizeof(struct ndp_ns) == 20);
-
-struct ndp_na { /* Neighbor Advertisement Message */
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint32_t
- R:1, /* Router Flag */
- S:1, /* Solicited Flag */
- O:1, /* Override Flag */
- reserved_hi:5,
- reserved_lo:24;
-#else
- uint32_t
- reserved_hi:5,
- O:1,
- S:1,
- R:1,
- reserved_lo:24;
-#endif
- struct in6_addr target; /* Target Address */
-};
-
-G_STATIC_ASSERT(sizeof(struct ndp_na) == 20);
-
-struct ndp_redirect {
- uint32_t reserved;
- struct in6_addr target; /* Target Address */
- struct in6_addr dest; /* Destination Address */
-};
-
-G_STATIC_ASSERT(sizeof(struct ndp_redirect) == 36);
-
-/*
- * Structure of an icmpv6 header.
- */
-struct icmp6 {
- uint8_t icmp6_type; /* type of message, see below */
- uint8_t icmp6_code; /* type sub code */
- uint16_t icmp6_cksum; /* ones complement cksum of struct */
- union {
- union icmp6_error_body error_body;
- struct icmp6_echo echo;
- struct ndp_rs ndp_rs;
- struct ndp_ra ndp_ra;
- struct ndp_ns ndp_ns;
- struct ndp_na ndp_na;
- struct ndp_redirect ndp_redirect;
- } icmp6_body;
-#define icmp6_err icmp6_body.error_body
-#define icmp6_echo icmp6_body.echo
-#define icmp6_nrs icmp6_body.ndp_rs
-#define icmp6_nra icmp6_body.ndp_ra
-#define icmp6_nns icmp6_body.ndp_ns
-#define icmp6_nna icmp6_body.ndp_na
-#define icmp6_redirect icmp6_body.ndp_redirect
-};
-
-G_STATIC_ASSERT(sizeof(struct icmp6) == 40);
-
-#define ICMP6_MINLEN 4
-#define ICMP6_ERROR_MINLEN 8
-#define ICMP6_ECHO_MINLEN 8
-#define ICMP6_NDP_RS_MINLEN 8
-#define ICMP6_NDP_RA_MINLEN 16
-#define ICMP6_NDP_NS_MINLEN 24
-#define ICMP6_NDP_NA_MINLEN 24
-#define ICMP6_NDP_REDIRECT_MINLEN 40
-
-/*
- * NDP Options
- */
-struct ndpopt {
- uint8_t ndpopt_type; /* Option type */
- uint8_t ndpopt_len; /* /!\ In units of 8 octets */
- union {
- unsigned char linklayer_addr[6]; /* Source/Target Link-layer */
-#define ndpopt_linklayer ndpopt_body.linklayer_addr
- struct prefixinfo { /* Prefix Information */
- uint8_t prefix_length;
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint8_t L:1, A:1, reserved1:6;
-#else
- uint8_t reserved1:6, A:1, L:1;
-#endif
- uint32_t valid_lt; /* Valid Lifetime */
- uint32_t pref_lt; /* Preferred Lifetime */
- uint32_t reserved2;
- struct in6_addr prefix;
- } SLIRP_PACKED prefixinfo;
-#define ndpopt_prefixinfo ndpopt_body.prefixinfo
- struct rdnss {
- uint16_t reserved;
- uint32_t lifetime;
- struct in6_addr addr;
- } SLIRP_PACKED rdnss;
-#define ndpopt_rdnss ndpopt_body.rdnss
- } ndpopt_body;
-} SLIRP_PACKED;
-
-/* NDP options type */
-#define NDPOPT_LINKLAYER_SOURCE 1 /* Source Link-Layer Address */
-#define NDPOPT_LINKLAYER_TARGET 2 /* Target Link-Layer Address */
-#define NDPOPT_PREFIX_INFO 3 /* Prefix Information */
-#define NDPOPT_RDNSS 25 /* Recursive DNS Server Address */
-
-/* NDP options size, in octets. */
-#define NDPOPT_LINKLAYER_LEN 8
-#define NDPOPT_PREFIXINFO_LEN 32
-#define NDPOPT_RDNSS_LEN 24
-
-/*
- * Definition of type and code field values.
- * Per https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xml
- * Last Updated 2012-11-12
- */
-
-/* Errors */
-#define ICMP6_UNREACH 1 /* Destination Unreachable */
-#define ICMP6_UNREACH_NO_ROUTE 0 /* no route to dest */
-#define ICMP6_UNREACH_DEST_PROHIB 1 /* com with dest prohibited */
-#define ICMP6_UNREACH_SCOPE 2 /* beyond scope of src addr */
-#define ICMP6_UNREACH_ADDRESS 3 /* address unreachable */
-#define ICMP6_UNREACH_PORT 4 /* port unreachable */
-#define ICMP6_UNREACH_SRC_FAIL 5 /* src addr failed */
-#define ICMP6_UNREACH_REJECT_ROUTE 6 /* reject route to dest */
-#define ICMP6_UNREACH_SRC_HDR_ERROR 7 /* error in src routing header */
-#define ICMP6_TOOBIG 2 /* Packet Too Big */
-#define ICMP6_TIMXCEED 3 /* Time Exceeded */
-#define ICMP6_TIMXCEED_INTRANS 0 /* hop limit exceeded in transit */
-#define ICMP6_TIMXCEED_REASS 1 /* ttl=0 in reass */
-#define ICMP6_PARAMPROB 4 /* Parameter Problem */
-#define ICMP6_PARAMPROB_HDR_FIELD 0 /* err header field */
-#define ICMP6_PARAMPROB_NXTHDR_TYPE 1 /* unrecognized Next Header type */
-#define ICMP6_PARAMPROB_IPV6_OPT 2 /* unrecognized IPv6 option */
-
-/* Informational Messages */
-#define ICMP6_ECHO_REQUEST 128 /* Echo Request */
-#define ICMP6_ECHO_REPLY 129 /* Echo Reply */
-#define ICMP6_NDP_RS 133 /* Router Solicitation (NDP) */
-#define ICMP6_NDP_RA 134 /* Router Advertisement (NDP) */
-#define ICMP6_NDP_NS 135 /* Neighbor Solicitation (NDP) */
-#define ICMP6_NDP_NA 136 /* Neighbor Advertisement (NDP) */
-#define ICMP6_NDP_REDIRECT 137 /* Redirect Message (NDP) */
-
-/*
- * Router Configuration Variables (rfc4861#section-6)
- */
-#define NDP_IsRouter 1
-#define NDP_AdvSendAdvertisements 1
-#define NDP_MaxRtrAdvInterval 600000
-#define NDP_MinRtrAdvInterval ((NDP_MaxRtrAdvInterval >= 9) ? \
- NDP_MaxRtrAdvInterval / 3 : \
- NDP_MaxRtrAdvInterval)
-#define NDP_AdvManagedFlag 0
-#define NDP_AdvOtherConfigFlag 0
-#define NDP_AdvLinkMTU 0
-#define NDP_AdvReachableTime 0
-#define NDP_AdvRetransTime 0
-#define NDP_AdvCurHopLimit 64
-#define NDP_AdvDefaultLifetime ((3 * NDP_MaxRtrAdvInterval) / 1000)
-#define NDP_AdvValidLifetime 86400
-#define NDP_AdvOnLinkFlag 1
-#define NDP_AdvPrefLifetime 14400
-#define NDP_AdvAutonomousFlag 1
-
-void icmp6_init(Slirp *slirp);
-void icmp6_cleanup(Slirp *slirp);
-void icmp6_input(struct mbuf *);
-void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code);
-void ndp_send_ra(Slirp *slirp);
-void ndp_send_ns(Slirp *slirp, struct in6_addr addr);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#include "slirp.h"
-#include "ip6_icmp.h"
-
-/*
- * IP initialization: fill in IP protocol switch table.
- * All protocols not implemented in kernel go to raw IP protocol handler.
- */
-void ip6_init(Slirp *slirp)
-{
- icmp6_init(slirp);
-}
-
-void ip6_cleanup(Slirp *slirp)
-{
- icmp6_cleanup(slirp);
-}
-
-void ip6_input(struct mbuf *m)
-{
- struct ip6 *ip6;
- Slirp *slirp = m->slirp;
-
- if (!slirp->in6_enabled) {
- goto bad;
- }
-
- DEBUG_CALL("ip6_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("m_len = %d", m->m_len);
-
- if (m->m_len < sizeof(struct ip6)) {
- goto bad;
- }
-
- ip6 = mtod(m, struct ip6 *);
-
- if (ip6->ip_v != IP6VERSION) {
- goto bad;
- }
-
- if (ntohs(ip6->ip_pl) > IF_MTU) {
- icmp6_send_error(m, ICMP6_TOOBIG, 0);
- goto bad;
- }
-
- /* check ip_ttl for a correct ICMP reply */
- if (ip6->ip_hl == 0) {
- icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
- goto bad;
- }
-
- /*
- * Switch out to protocol's input routine.
- */
- switch (ip6->ip_nh) {
- case IPPROTO_TCP:
- NTOHS(ip6->ip_pl);
- tcp_input(m, sizeof(struct ip6), (struct socket *)NULL, AF_INET6);
- break;
- case IPPROTO_UDP:
- udp6_input(m);
- break;
- case IPPROTO_ICMPV6:
- icmp6_input(m);
- break;
- default:
- m_free(m);
- }
- return;
-bad:
- m_free(m);
-}
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#include "slirp.h"
-
-/* Number of packets queued before we start sending
- * (to prevent allocing too many mbufs) */
-#define IF6_THRESH 10
-
-/*
- * IPv6 output. The packet in mbuf chain m contains a IP header
- */
-int ip6_output(struct socket *so, struct mbuf *m, int fast)
-{
- struct ip6 *ip = mtod(m, struct ip6 *);
-
- DEBUG_CALL("ip6_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
-
- /* Fill IPv6 header */
- ip->ip_v = IP6VERSION;
- ip->ip_hl = IP6_HOP_LIMIT;
- ip->ip_tc_hi = 0;
- ip->ip_tc_lo = 0;
- ip->ip_fl_hi = 0;
- ip->ip_fl_lo = 0;
-
- if (fast) {
- if_encap(m->slirp, m);
- } else {
- if_output(so, m);
- }
-
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94
- * ip_icmp.c,v 1.7 1995/05/30 08:09:42 rgrimes Exp
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-
-#ifndef WITH_ICMP_ERROR_MSG
-#define WITH_ICMP_ERROR_MSG 0
-#endif
-
-/* The message sent when emulating PING */
-/* Be nice and tell them it's just a pseudo-ping packet */
-static const char icmp_ping_msg[] = "This is a pseudo-PING packet used by Slirp to emulate ICMP ECHO-REQUEST packets.\n";
-
-/* list of actions for icmp_send_error() on RX of an icmp message */
-static const int icmp_flush[19] = {
-/* ECHO REPLY (0) */ 0,
- 1,
- 1,
-/* DEST UNREACH (3) */ 1,
-/* SOURCE QUENCH (4)*/ 1,
-/* REDIRECT (5) */ 1,
- 1,
- 1,
-/* ECHO (8) */ 0,
-/* ROUTERADVERT (9) */ 1,
-/* ROUTERSOLICIT (10) */ 1,
-/* TIME EXCEEDED (11) */ 1,
-/* PARAMETER PROBLEM (12) */ 1,
-/* TIMESTAMP (13) */ 0,
-/* TIMESTAMP REPLY (14) */ 0,
-/* INFO (15) */ 0,
-/* INFO REPLY (16) */ 0,
-/* ADDR MASK (17) */ 0,
-/* ADDR MASK REPLY (18) */ 0
-};
-
-void icmp_init(Slirp *slirp)
-{
- slirp->icmp.so_next = slirp->icmp.so_prev = &slirp->icmp;
- slirp->icmp_last_so = &slirp->icmp;
-}
-
-void icmp_cleanup(Slirp *slirp)
-{
- while (slirp->icmp.so_next != &slirp->icmp) {
- icmp_detach(slirp->icmp.so_next);
- }
-}
-
-static int icmp_send(struct socket *so, struct mbuf *m, int hlen)
-{
- struct ip *ip = mtod(m, struct ip *);
- struct sockaddr_in addr;
-
- so->s = slirp_socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP);
- if (so->s == -1) {
- return -1;
- }
-
- so->so_m = m;
- so->so_faddr = ip->ip_dst;
- so->so_laddr = ip->ip_src;
- so->so_iptos = ip->ip_tos;
- so->so_type = IPPROTO_ICMP;
- so->so_state = SS_ISFCONNECTED;
- so->so_expire = curtime + SO_EXPIRE;
-
- addr.sin_family = AF_INET;
- addr.sin_addr = so->so_faddr;
-
- insque(so, &so->slirp->icmp);
-
- if (sendto(so->s, m->m_data + hlen, m->m_len - hlen, 0,
- (struct sockaddr *)&addr, sizeof(addr)) == -1) {
- DEBUG_MISC("icmp_input icmp sendto tx errno = %d-%s",
- errno, strerror(errno));
- icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
- icmp_detach(so);
- }
-
- return 0;
-}
-
-void icmp_detach(struct socket *so)
-{
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
- sofree(so);
-}
-
-/*
- * Process a received ICMP message.
- */
-void
-icmp_input(struct mbuf *m, int hlen)
-{
- register struct icmp *icp;
- register struct ip *ip=mtod(m, struct ip *);
- int icmplen=ip->ip_len;
- Slirp *slirp = m->slirp;
-
- DEBUG_CALL("icmp_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("m_len = %d", m->m_len);
-
- /*
- * Locate icmp structure in mbuf, and check
- * that its not corrupted and of at least minimum length.
- */
- if (icmplen < ICMP_MINLEN) { /* min 8 bytes payload */
- freeit:
- m_free(m);
- goto end_error;
- }
-
- m->m_len -= hlen;
- m->m_data += hlen;
- icp = mtod(m, struct icmp *);
- if (cksum(m, icmplen)) {
- goto freeit;
- }
- m->m_len += hlen;
- m->m_data -= hlen;
-
- DEBUG_ARG("icmp_type = %d", icp->icmp_type);
- switch (icp->icmp_type) {
- case ICMP_ECHO:
- ip->ip_len += hlen; /* since ip_input subtracts this */
- if (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
- ip->ip_dst.s_addr == slirp->vnameserver_addr.s_addr) {
- icmp_reflect(m);
- } else if (slirp->restricted) {
- goto freeit;
- } else {
- struct socket *so;
- struct sockaddr_storage addr;
- so = socreate(slirp);
- if (icmp_send(so, m, hlen) == 0) {
- return;
- }
- if (udp_attach(so, AF_INET) == -1) {
- DEBUG_MISC("icmp_input udp_attach errno = %d-%s",
- errno,strerror(errno));
- sofree(so);
- m_free(m);
- goto end_error;
- }
- so->so_m = m;
- so->so_ffamily = AF_INET;
- so->so_faddr = ip->ip_dst;
- so->so_fport = htons(7);
- so->so_lfamily = AF_INET;
- so->so_laddr = ip->ip_src;
- so->so_lport = htons(9);
- so->so_iptos = ip->ip_tos;
- so->so_type = IPPROTO_ICMP;
- so->so_state = SS_ISFCONNECTED;
-
- /* Send the packet */
- addr = so->fhost.ss;
- sotranslate_out(so, &addr);
-
- if(sendto(so->s, icmp_ping_msg, strlen(icmp_ping_msg), 0,
- (struct sockaddr *)&addr, sockaddr_size(&addr)) == -1) {
- DEBUG_MISC("icmp_input udp sendto tx errno = %d-%s",
- errno,strerror(errno));
- icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
- udp_detach(so);
- }
- } /* if ip->ip_dst.s_addr == alias_addr.s_addr */
- break;
- case ICMP_UNREACH:
- /* XXX? report error? close socket? */
- case ICMP_TIMXCEED:
- case ICMP_PARAMPROB:
- case ICMP_SOURCEQUENCH:
- case ICMP_TSTAMP:
- case ICMP_MASKREQ:
- case ICMP_REDIRECT:
- m_free(m);
- break;
-
- default:
- m_free(m);
- } /* swith */
-
-end_error:
- /* m is m_free()'d xor put in a socket xor or given to ip_send */
- return;
-}
-
-
-/*
- * Send an ICMP message in response to a situation
- *
- * RFC 1122: 3.2.2 MUST send at least the IP header and 8 bytes of header. MAY send more (we do).
- * MUST NOT change this header information.
- * MUST NOT reply to a multicast/broadcast IP address.
- * MUST NOT reply to a multicast/broadcast MAC address.
- * MUST reply to only the first fragment.
- */
-/*
- * Send ICMP_UNREACH back to the source regarding msrc.
- * mbuf *msrc is used as a template, but is NOT m_free()'d.
- * It is reported as the bad ip packet. The header should
- * be fully correct and in host byte order.
- * ICMP fragmentation is illegal. All machines must accept 576 bytes in one
- * packet. The maximum payload is 576-20(ip hdr)-8(icmp hdr)=548
- */
-
-#define ICMP_MAXDATALEN (IP_MSS-28)
-void
-icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize,
- const char *message)
-{
- unsigned hlen, shlen, s_ip_len;
- register struct ip *ip;
- register struct icmp *icp;
- register struct mbuf *m;
-
- DEBUG_CALL("icmp_send_error");
- DEBUG_ARG("msrc = %p", msrc);
- DEBUG_ARG("msrc_len = %d", msrc->m_len);
-
- if(type!=ICMP_UNREACH && type!=ICMP_TIMXCEED) goto end_error;
-
- /* check msrc */
- if(!msrc) goto end_error;
- ip = mtod(msrc, struct ip *);
- if (slirp_debug & DBG_MISC) {
- char bufa[20], bufb[20];
- strcpy(bufa, inet_ntoa(ip->ip_src));
- strcpy(bufb, inet_ntoa(ip->ip_dst));
- DEBUG_MISC(" %.16s to %.16s", bufa, bufb);
- }
- if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */
-
- /* Do not reply to source-only IPs */
- if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) {
- goto end_error;
- }
-
- shlen=ip->ip_hl << 2;
- s_ip_len=ip->ip_len;
- if(ip->ip_p == IPPROTO_ICMP) {
- icp = (struct icmp *)((char *)ip + shlen);
- /*
- * Assume any unknown ICMP type is an error. This isn't
- * specified by the RFC, but think about it..
- */
- if(icp->icmp_type>18 || icmp_flush[icp->icmp_type]) goto end_error;
- }
-
- /* make a copy */
- m = m_get(msrc->slirp);
- if (!m) {
- goto end_error;
- }
-
- { int new_m_size;
- new_m_size=sizeof(struct ip )+ICMP_MINLEN+msrc->m_len+ICMP_MAXDATALEN;
- if(new_m_size>m->m_size) m_inc(m, new_m_size);
- }
- memcpy(m->m_data, msrc->m_data, msrc->m_len);
- m->m_len = msrc->m_len; /* copy msrc to m */
-
- /* make the header of the reply packet */
- ip = mtod(m, struct ip *);
- hlen= sizeof(struct ip ); /* no options in reply */
-
- /* fill in icmp */
- m->m_data += hlen;
- m->m_len -= hlen;
-
- icp = mtod(m, struct icmp *);
-
- if(minsize) s_ip_len=shlen+ICMP_MINLEN; /* return header+8b only */
- else if(s_ip_len>ICMP_MAXDATALEN) /* maximum size */
- s_ip_len=ICMP_MAXDATALEN;
-
- m->m_len=ICMP_MINLEN+s_ip_len; /* 8 bytes ICMP header */
-
- /* min. size = 8+sizeof(struct ip)+8 */
-
- icp->icmp_type = type;
- icp->icmp_code = code;
- icp->icmp_id = 0;
- icp->icmp_seq = 0;
-
- memcpy(&icp->icmp_ip, msrc->m_data, s_ip_len); /* report the ip packet */
- HTONS(icp->icmp_ip.ip_len);
- HTONS(icp->icmp_ip.ip_id);
- HTONS(icp->icmp_ip.ip_off);
-
- if (message && WITH_ICMP_ERROR_MSG) { /* append message to ICMP packet */
- int message_len;
- char *cpnt;
- message_len=strlen(message);
- if(message_len>ICMP_MAXDATALEN) message_len=ICMP_MAXDATALEN;
- cpnt=(char *)m->m_data+m->m_len;
- memcpy(cpnt, message, message_len);
- m->m_len+=message_len;
- }
-
- icp->icmp_cksum = 0;
- icp->icmp_cksum = cksum(m, m->m_len);
-
- m->m_data -= hlen;
- m->m_len += hlen;
-
- /* fill in ip */
- ip->ip_hl = hlen >> 2;
- ip->ip_len = m->m_len;
-
- ip->ip_tos=((ip->ip_tos & 0x1E) | 0xC0); /* high priority for errors */
-
- ip->ip_ttl = MAXTTL;
- ip->ip_p = IPPROTO_ICMP;
- ip->ip_dst = ip->ip_src; /* ip addresses */
- ip->ip_src = m->slirp->vhost_addr;
-
- (void ) ip_output((struct socket *)NULL, m);
-
-end_error:
- return;
-}
-#undef ICMP_MAXDATALEN
-
-/*
- * Reflect the ip packet back to the source
- */
-void
-icmp_reflect(struct mbuf *m)
-{
- register struct ip *ip = mtod(m, struct ip *);
- int hlen = ip->ip_hl << 2;
- int optlen = hlen - sizeof(struct ip );
- register struct icmp *icp;
-
- /*
- * Send an icmp packet back to the ip level,
- * after supplying a checksum.
- */
- m->m_data += hlen;
- m->m_len -= hlen;
- icp = mtod(m, struct icmp *);
-
- icp->icmp_type = ICMP_ECHOREPLY;
- icp->icmp_cksum = 0;
- icp->icmp_cksum = cksum(m, ip->ip_len - hlen);
-
- m->m_data -= hlen;
- m->m_len += hlen;
-
- /* fill in ip */
- if (optlen > 0) {
- /*
- * Strip out original options by copying rest of first
- * mbuf's data back, and adjust the IP length.
- */
- memmove((char *)(ip + 1), (char *)ip + hlen,
- (unsigned )(m->m_len - hlen));
- hlen -= optlen;
- ip->ip_hl = hlen >> 2;
- ip->ip_len -= optlen;
- m->m_len -= optlen;
- }
-
- ip->ip_ttl = MAXTTL;
- { /* swap */
- struct in_addr icmp_dst;
- icmp_dst = ip->ip_dst;
- ip->ip_dst = ip->ip_src;
- ip->ip_src = icmp_dst;
- }
-
- (void ) ip_output((struct socket *)NULL, m);
-}
-
-void icmp_receive(struct socket *so)
-{
- struct mbuf *m = so->so_m;
- struct ip *ip = mtod(m, struct ip *);
- int hlen = ip->ip_hl << 2;
- uint8_t error_code;
- struct icmp *icp;
- int id, len;
-
- m->m_data += hlen;
- m->m_len -= hlen;
- icp = mtod(m, struct icmp *);
-
- id = icp->icmp_id;
- len = recv(so->s, icp, M_ROOM(m), 0);
- /*
- * The behavior of reading SOCK_DGRAM+IPPROTO_ICMP sockets is inconsistent
- * between host OSes. On Linux, only the ICMP header and payload is
- * included. On macOS/Darwin, the socket acts like a raw socket and
- * includes the IP header as well. On other BSDs, SOCK_DGRAM+IPPROTO_ICMP
- * sockets aren't supported at all, so we treat them like raw sockets. It
- * isn't possible to detect this difference at runtime, so we must use an
- * #ifdef to determine if we need to remove the IP header.
- */
-#ifdef CONFIG_BSD
- if (len >= sizeof(struct ip)) {
- struct ip *inner_ip = mtod(m, struct ip *);
- int inner_hlen = inner_ip->ip_hl << 2;
- if (inner_hlen > len) {
- len = -1;
- errno = -EINVAL;
- } else {
- len -= inner_hlen;
- memmove(icp, (unsigned char *)icp + inner_hlen, len);
- }
- } else {
- len = -1;
- errno = -EINVAL;
- }
-#endif
- icp->icmp_id = id;
-
- m->m_data -= hlen;
- m->m_len += hlen;
-
- if (len == -1 || len == 0) {
- if (errno == ENETUNREACH) {
- error_code = ICMP_UNREACH_NET;
- } else {
- error_code = ICMP_UNREACH_HOST;
- }
- DEBUG_MISC(" udp icmp rx errno = %d-%s", errno,
- strerror(errno));
- icmp_send_error(so->so_m, ICMP_UNREACH, error_code, 0, strerror(errno));
- } else {
- icmp_reflect(so->so_m);
- so->so_m = NULL; /* Don't m_free() it again! */
- }
- icmp_detach(so);
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
- * ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp
- */
-
-#ifndef NETINET_IP_ICMP_H
-#define NETINET_IP_ICMP_H
-
-/*
- * Interface Control Message Protocol Definitions.
- * Per RFC 792, September 1981.
- */
-
-typedef uint32_t n_time;
-
-/*
- * Structure of an icmp header.
- */
-struct icmp {
- uint8_t icmp_type; /* type of message, see below */
- uint8_t icmp_code; /* type sub code */
- uint16_t icmp_cksum; /* ones complement cksum of struct */
- union {
- uint8_t ih_pptr; /* ICMP_PARAMPROB */
- struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
- struct ih_idseq {
- uint16_t icd_id;
- uint16_t icd_seq;
- } ih_idseq;
- int ih_void;
-
- /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
- struct ih_pmtu {
- uint16_t ipm_void;
- uint16_t ipm_nextmtu;
- } ih_pmtu;
- } icmp_hun;
-#define icmp_pptr icmp_hun.ih_pptr
-#define icmp_gwaddr icmp_hun.ih_gwaddr
-#define icmp_id icmp_hun.ih_idseq.icd_id
-#define icmp_seq icmp_hun.ih_idseq.icd_seq
-#define icmp_void icmp_hun.ih_void
-#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
-#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
- union {
- struct id_ts {
- n_time its_otime;
- n_time its_rtime;
- n_time its_ttime;
- } id_ts;
- struct id_ip {
- struct ip idi_ip;
- /* options and then 64 bits of data */
- } id_ip;
- uint32_t id_mask;
- char id_data[1];
- } icmp_dun;
-#define icmp_otime icmp_dun.id_ts.its_otime
-#define icmp_rtime icmp_dun.id_ts.its_rtime
-#define icmp_ttime icmp_dun.id_ts.its_ttime
-#define icmp_ip icmp_dun.id_ip.idi_ip
-#define icmp_mask icmp_dun.id_mask
-#define icmp_data icmp_dun.id_data
-};
-
-/*
- * Lower bounds on packet lengths for various types.
- * For the error advice packets must first ensure that the
- * packet is large enough to contain the returned ip header.
- * Only then can we do the check to see if 64 bits of packet
- * data have been returned, since we need to check the returned
- * ip header length.
- */
-#define ICMP_MINLEN 8 /* abs minimum */
-#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
-#define ICMP_MASKLEN 12 /* address mask */
-#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
-#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
- /* N.B.: must separately check that ip_hl >= 5 */
-
-/*
- * Definition of type and code field values.
- */
-#define ICMP_ECHOREPLY 0 /* echo reply */
-#define ICMP_UNREACH 3 /* dest unreachable, codes: */
-#define ICMP_UNREACH_NET 0 /* bad net */
-#define ICMP_UNREACH_HOST 1 /* bad host */
-#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
-#define ICMP_UNREACH_PORT 3 /* bad port */
-#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
-#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
-#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
-#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
-#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
-#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
-#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
-#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
-#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
-#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
-#define ICMP_REDIRECT 5 /* shorter route, codes: */
-#define ICMP_REDIRECT_NET 0 /* for network */
-#define ICMP_REDIRECT_HOST 1 /* for host */
-#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
-#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
-#define ICMP_ECHO 8 /* echo service */
-#define ICMP_ROUTERADVERT 9 /* router advertisement */
-#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
-#define ICMP_TIMXCEED 11 /* time exceeded, code: */
-#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
-#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
-#define ICMP_PARAMPROB 12 /* ip header bad */
-#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
-#define ICMP_TSTAMP 13 /* timestamp request */
-#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
-#define ICMP_IREQ 15 /* information request */
-#define ICMP_IREQREPLY 16 /* information reply */
-#define ICMP_MASKREQ 17 /* address mask request */
-#define ICMP_MASKREPLY 18 /* address mask reply */
-
-#define ICMP_MAXTYPE 18
-
-#define ICMP_INFOTYPE(type) \
- ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
- (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
- (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
- (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
- (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
-
-void icmp_init(Slirp *slirp);
-void icmp_cleanup(Slirp *slirp);
-void icmp_input(struct mbuf *, int);
-void icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize,
- const char *message);
-void icmp_reflect(struct mbuf *);
-void icmp_receive(struct socket *so);
-void icmp_detach(struct socket *so);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip_input.c 8.2 (Berkeley) 1/4/94
- * ip_input.c,v 1.11 1994/11/16 10:17:08 jkh Exp
- */
-
-/*
- * Changes and additions relating to SLiRP are
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-
-static struct ip *ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp);
-static void ip_freef(Slirp *slirp, struct ipq *fp);
-static void ip_enq(register struct ipasfrag *p,
- register struct ipasfrag *prev);
-static void ip_deq(register struct ipasfrag *p);
-
-/*
- * IP initialization: fill in IP protocol switch table.
- * All protocols not implemented in kernel go to raw IP protocol handler.
- */
-void
-ip_init(Slirp *slirp)
-{
- slirp->ipq.ip_link.next = slirp->ipq.ip_link.prev = &slirp->ipq.ip_link;
- udp_init(slirp);
- tcp_init(slirp);
- icmp_init(slirp);
-}
-
-void ip_cleanup(Slirp *slirp)
-{
- udp_cleanup(slirp);
- tcp_cleanup(slirp);
- icmp_cleanup(slirp);
-}
-
-/*
- * Ip input routine. Checksum and byte swap header. If fragmented
- * try to reassemble. Process options. Pass to next level.
- */
-void
-ip_input(struct mbuf *m)
-{
- Slirp *slirp = m->slirp;
- register struct ip *ip;
- int hlen;
-
- if (!slirp->in_enabled) {
- goto bad;
- }
-
- DEBUG_CALL("ip_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("m_len = %d", m->m_len);
-
- if (m->m_len < sizeof (struct ip)) {
- goto bad;
- }
-
- ip = mtod(m, struct ip *);
-
- if (ip->ip_v != IPVERSION) {
- goto bad;
- }
-
- hlen = ip->ip_hl << 2;
- if (hlen<sizeof(struct ip ) || hlen>m->m_len) {/* min header length */
- goto bad; /* or packet too short */
- }
-
- /* keep ip header intact for ICMP reply
- * ip->ip_sum = cksum(m, hlen);
- * if (ip->ip_sum) {
- */
- if(cksum(m,hlen)) {
- goto bad;
- }
-
- /*
- * Convert fields to host representation.
- */
- NTOHS(ip->ip_len);
- if (ip->ip_len < hlen) {
- goto bad;
- }
- NTOHS(ip->ip_id);
- NTOHS(ip->ip_off);
-
- /*
- * Check that the amount of data in the buffers
- * is as at least much as the IP header would have us expect.
- * Trim mbufs if longer than we expect.
- * Drop packet if shorter than we expect.
- */
- if (m->m_len < ip->ip_len) {
- goto bad;
- }
-
- /* Should drop packet if mbuf too long? hmmm... */
- if (m->m_len > ip->ip_len)
- m_adj(m, ip->ip_len - m->m_len);
-
- /* check ip_ttl for a correct ICMP reply */
- if (ip->ip_ttl == 0) {
- icmp_send_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, 0, "ttl");
- goto bad;
- }
-
- /*
- * If offset or IP_MF are set, must reassemble.
- * Otherwise, nothing need be done.
- * (We could look in the reassembly queue to see
- * if the packet was previously fragmented,
- * but it's not worth the time; just let them time out.)
- *
- * XXX This should fail, don't fragment yet
- */
- if (ip->ip_off &~ IP_DF) {
- register struct ipq *fp;
- struct qlink *l;
- /*
- * Look for queue of fragments
- * of this datagram.
- */
- for (l = slirp->ipq.ip_link.next; l != &slirp->ipq.ip_link;
- l = l->next) {
- fp = container_of(l, struct ipq, ip_link);
- if (ip->ip_id == fp->ipq_id &&
- ip->ip_src.s_addr == fp->ipq_src.s_addr &&
- ip->ip_dst.s_addr == fp->ipq_dst.s_addr &&
- ip->ip_p == fp->ipq_p)
- goto found;
- }
- fp = NULL;
- found:
-
- /*
- * Adjust ip_len to not reflect header,
- * set ip_mff if more fragments are expected,
- * convert offset of this to bytes.
- */
- ip->ip_len -= hlen;
- if (ip->ip_off & IP_MF)
- ip->ip_tos |= 1;
- else
- ip->ip_tos &= ~1;
-
- ip->ip_off <<= 3;
-
- /*
- * If datagram marked as having more fragments
- * or if this is not the first fragment,
- * attempt reassembly; if it succeeds, proceed.
- */
- if (ip->ip_tos & 1 || ip->ip_off) {
- ip = ip_reass(slirp, ip, fp);
- if (ip == NULL)
- return;
- m = dtom(slirp, ip);
- } else
- if (fp)
- ip_freef(slirp, fp);
-
- } else
- ip->ip_len -= hlen;
-
- /*
- * Switch out to protocol's input routine.
- */
- switch (ip->ip_p) {
- case IPPROTO_TCP:
- tcp_input(m, hlen, (struct socket *)NULL, AF_INET);
- break;
- case IPPROTO_UDP:
- udp_input(m, hlen);
- break;
- case IPPROTO_ICMP:
- icmp_input(m, hlen);
- break;
- default:
- m_free(m);
- }
- return;
-bad:
- m_free(m);
-}
-
-#define iptofrag(P) ((struct ipasfrag *)(((char*)(P)) - sizeof(struct qlink)))
-#define fragtoip(P) ((struct ip*)(((char*)(P)) + sizeof(struct qlink)))
-/*
- * Take incoming datagram fragment and try to
- * reassemble it into whole datagram. If a chain for
- * reassembly of this datagram already exists, then it
- * is given as fp; otherwise have to make a chain.
- */
-static struct ip *
-ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp)
-{
- register struct mbuf *m = dtom(slirp, ip);
- register struct ipasfrag *q;
- int hlen = ip->ip_hl << 2;
- int i, next;
-
- DEBUG_CALL("ip_reass");
- DEBUG_ARG("ip = %p", ip);
- DEBUG_ARG("fp = %p", fp);
- DEBUG_ARG("m = %p", m);
-
- /*
- * Presence of header sizes in mbufs
- * would confuse code below.
- * Fragment m_data is concatenated.
- */
- m->m_data += hlen;
- m->m_len -= hlen;
-
- /*
- * If first fragment to arrive, create a reassembly queue.
- */
- if (fp == NULL) {
- struct mbuf *t = m_get(slirp);
-
- if (t == NULL) {
- goto dropfrag;
- }
- fp = mtod(t, struct ipq *);
- insque(&fp->ip_link, &slirp->ipq.ip_link);
- fp->ipq_ttl = IPFRAGTTL;
- fp->ipq_p = ip->ip_p;
- fp->ipq_id = ip->ip_id;
- fp->frag_link.next = fp->frag_link.prev = &fp->frag_link;
- fp->ipq_src = ip->ip_src;
- fp->ipq_dst = ip->ip_dst;
- q = (struct ipasfrag *)fp;
- goto insert;
- }
-
- /*
- * Find a segment which begins after this one does.
- */
- for (q = fp->frag_link.next; q != (struct ipasfrag *)&fp->frag_link;
- q = q->ipf_next)
- if (q->ipf_off > ip->ip_off)
- break;
-
- /*
- * If there is a preceding segment, it may provide some of
- * our data already. If so, drop the data from the incoming
- * segment. If it provides all of our data, drop us.
- */
- if (q->ipf_prev != &fp->frag_link) {
- struct ipasfrag *pq = q->ipf_prev;
- i = pq->ipf_off + pq->ipf_len - ip->ip_off;
- if (i > 0) {
- if (i >= ip->ip_len)
- goto dropfrag;
- m_adj(dtom(slirp, ip), i);
- ip->ip_off += i;
- ip->ip_len -= i;
- }
- }
-
- /*
- * While we overlap succeeding segments trim them or,
- * if they are completely covered, dequeue them.
- */
- while (q != (struct ipasfrag*)&fp->frag_link &&
- ip->ip_off + ip->ip_len > q->ipf_off) {
- i = (ip->ip_off + ip->ip_len) - q->ipf_off;
- if (i < q->ipf_len) {
- q->ipf_len -= i;
- q->ipf_off += i;
- m_adj(dtom(slirp, q), i);
- break;
- }
- q = q->ipf_next;
- m_free(dtom(slirp, q->ipf_prev));
- ip_deq(q->ipf_prev);
- }
-
-insert:
- /*
- * Stick new segment in its place;
- * check for complete reassembly.
- */
- ip_enq(iptofrag(ip), q->ipf_prev);
- next = 0;
- for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link;
- q = q->ipf_next) {
- if (q->ipf_off != next)
- return NULL;
- next += q->ipf_len;
- }
- if (((struct ipasfrag *)(q->ipf_prev))->ipf_tos & 1)
- return NULL;
-
- /*
- * Reassembly is complete; concatenate fragments.
- */
- q = fp->frag_link.next;
- m = dtom(slirp, q);
-
- q = (struct ipasfrag *) q->ipf_next;
- while (q != (struct ipasfrag*)&fp->frag_link) {
- struct mbuf *t = dtom(slirp, q);
- q = (struct ipasfrag *) q->ipf_next;
- m_cat(m, t);
- }
-
- /*
- * Create header for new ip packet by
- * modifying header of first packet;
- * dequeue and discard fragment reassembly header.
- * Make header visible.
- */
- q = fp->frag_link.next;
-
- /*
- * If the fragments concatenated to an mbuf that's
- * bigger than the total size of the fragment, then and
- * m_ext buffer was alloced. But fp->ipq_next points to
- * the old buffer (in the mbuf), so we must point ip
- * into the new buffer.
- */
- if (m->m_flags & M_EXT) {
- int delta = (char *)q - m->m_dat;
- q = (struct ipasfrag *)(m->m_ext + delta);
- }
-
- ip = fragtoip(q);
- ip->ip_len = next;
- ip->ip_tos &= ~1;
- ip->ip_src = fp->ipq_src;
- ip->ip_dst = fp->ipq_dst;
- remque(&fp->ip_link);
- (void) m_free(dtom(slirp, fp));
- m->m_len += (ip->ip_hl << 2);
- m->m_data -= (ip->ip_hl << 2);
-
- return ip;
-
-dropfrag:
- m_free(m);
- return NULL;
-}
-
-/*
- * Free a fragment reassembly header and all
- * associated datagrams.
- */
-static void
-ip_freef(Slirp *slirp, struct ipq *fp)
-{
- register struct ipasfrag *q, *p;
-
- for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link; q = p) {
- p = q->ipf_next;
- ip_deq(q);
- m_free(dtom(slirp, q));
- }
- remque(&fp->ip_link);
- (void) m_free(dtom(slirp, fp));
-}
-
-/*
- * Put an ip fragment on a reassembly chain.
- * Like insque, but pointers in middle of structure.
- */
-static void
-ip_enq(register struct ipasfrag *p, register struct ipasfrag *prev)
-{
- DEBUG_CALL("ip_enq");
- DEBUG_ARG("prev = %p", prev);
- p->ipf_prev = prev;
- p->ipf_next = prev->ipf_next;
- ((struct ipasfrag *)(prev->ipf_next))->ipf_prev = p;
- prev->ipf_next = p;
-}
-
-/*
- * To ip_enq as remque is to insque.
- */
-static void
-ip_deq(register struct ipasfrag *p)
-{
- ((struct ipasfrag *)(p->ipf_prev))->ipf_next = p->ipf_next;
- ((struct ipasfrag *)(p->ipf_next))->ipf_prev = p->ipf_prev;
-}
-
-/*
- * IP timer processing;
- * if a timer expires on a reassembly
- * queue, discard it.
- */
-void
-ip_slowtimo(Slirp *slirp)
-{
- struct qlink *l;
-
- DEBUG_CALL("ip_slowtimo");
-
- l = slirp->ipq.ip_link.next;
-
- if (l == NULL)
- return;
-
- while (l != &slirp->ipq.ip_link) {
- struct ipq *fp = container_of(l, struct ipq, ip_link);
- l = l->next;
- if (--fp->ipq_ttl == 0) {
- ip_freef(slirp, fp);
- }
- }
-}
-
-/*
- * Strip out IP options, at higher
- * level protocol in the kernel.
- * Second argument is buffer to which options
- * will be moved, and return value is their length.
- * (XXX) should be deleted; last arg currently ignored.
- */
-void
-ip_stripoptions(register struct mbuf *m, struct mbuf *mopt)
-{
- register int i;
- struct ip *ip = mtod(m, struct ip *);
- register char *opts;
- int olen;
-
- olen = (ip->ip_hl<<2) - sizeof (struct ip);
- opts = (char *)(ip + 1);
- i = m->m_len - (sizeof (struct ip) + olen);
- memcpy(opts, opts + olen, (unsigned)i);
- m->m_len -= olen;
-
- ip->ip_hl = sizeof(struct ip) >> 2;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip_output.c 8.3 (Berkeley) 1/21/94
- * ip_output.c,v 1.9 1994/11/16 10:17:10 jkh Exp
- */
-
-/*
- * Changes and additions relating to SLiRP are
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-/* Number of packets queued before we start sending
- * (to prevent allocing too many mbufs) */
-#define IF_THRESH 10
-
-/*
- * IP output. The packet in mbuf chain m contains a skeletal IP
- * header (with len, off, ttl, proto, tos, src, dst).
- * The mbuf chain containing the packet will be freed.
- * The mbuf opt, if present, will not be freed.
- */
-int
-ip_output(struct socket *so, struct mbuf *m0)
-{
- Slirp *slirp = m0->slirp;
- register struct ip *ip;
- register struct mbuf *m = m0;
- register int hlen = sizeof(struct ip );
- int len, off, error = 0;
-
- DEBUG_CALL("ip_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m0 = %p", m0);
-
- ip = mtod(m, struct ip *);
- /*
- * Fill in IP header.
- */
- ip->ip_v = IPVERSION;
- ip->ip_off &= IP_DF;
- ip->ip_id = htons(slirp->ip_id++);
- ip->ip_hl = hlen >> 2;
-
- /*
- * If small enough for interface, can just send directly.
- */
- if ((uint16_t)ip->ip_len <= IF_MTU) {
- ip->ip_len = htons((uint16_t)ip->ip_len);
- ip->ip_off = htons((uint16_t)ip->ip_off);
- ip->ip_sum = 0;
- ip->ip_sum = cksum(m, hlen);
-
- if_output(so, m);
- goto done;
- }
-
- /*
- * Too large for interface; fragment if possible.
- * Must be able to put at least 8 bytes per fragment.
- */
- if (ip->ip_off & IP_DF) {
- error = -1;
- goto bad;
- }
-
- len = (IF_MTU - hlen) &~ 7; /* ip databytes per packet */
- if (len < 8) {
- error = -1;
- goto bad;
- }
-
- {
- int mhlen, firstlen = len;
- struct mbuf **mnext = &m->m_nextpkt;
-
- /*
- * Loop through length of segment after first fragment,
- * make new header and copy data of each part and link onto chain.
- */
- m0 = m;
- mhlen = sizeof (struct ip);
- for (off = hlen + len; off < (uint16_t)ip->ip_len; off += len) {
- register struct ip *mhip;
- m = m_get(slirp);
- if (m == NULL) {
- error = -1;
- goto sendorfree;
- }
- m->m_data += IF_MAXLINKHDR;
- mhip = mtod(m, struct ip *);
- *mhip = *ip;
-
- m->m_len = mhlen;
- mhip->ip_off = ((off - hlen) >> 3) + (ip->ip_off & ~IP_MF);
- if (ip->ip_off & IP_MF)
- mhip->ip_off |= IP_MF;
- if (off + len >= (uint16_t)ip->ip_len)
- len = (uint16_t)ip->ip_len - off;
- else
- mhip->ip_off |= IP_MF;
- mhip->ip_len = htons((uint16_t)(len + mhlen));
-
- if (m_copy(m, m0, off, len) < 0) {
- error = -1;
- goto sendorfree;
- }
-
- mhip->ip_off = htons((uint16_t)mhip->ip_off);
- mhip->ip_sum = 0;
- mhip->ip_sum = cksum(m, mhlen);
- *mnext = m;
- mnext = &m->m_nextpkt;
- }
- /*
- * Update first fragment by trimming what's been copied out
- * and updating header, then send each fragment (in order).
- */
- m = m0;
- m_adj(m, hlen + firstlen - (uint16_t)ip->ip_len);
- ip->ip_len = htons((uint16_t)m->m_len);
- ip->ip_off = htons((uint16_t)(ip->ip_off | IP_MF));
- ip->ip_sum = 0;
- ip->ip_sum = cksum(m, hlen);
-sendorfree:
- for (m = m0; m; m = m0) {
- m0 = m->m_nextpkt;
- m->m_nextpkt = NULL;
- if (error == 0)
- if_output(so, m);
- else
- m_free(m);
- }
- }
-
-done:
- return (error);
-
-bad:
- m_free(m0);
- goto done;
-}
+++ /dev/null
-#ifndef LIBSLIRP_H
-#define LIBSLIRP_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-#ifdef _WIN32
-#include <winsock2.h>
-#include <in6addr.h>
-#else
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct Slirp Slirp;
-
-enum {
- SLIRP_POLL_IN = 1 << 0,
- SLIRP_POLL_OUT = 1 << 1,
- SLIRP_POLL_PRI = 1 << 2,
- SLIRP_POLL_ERR = 1 << 3,
- SLIRP_POLL_HUP = 1 << 4,
-};
-
-typedef ssize_t (*SlirpWriteCb)(const void *buf, size_t len, void *opaque);
-typedef void (*SlirpTimerCb)(void *opaque);
-typedef int (*SlirpAddPollCb)(int fd, int events, void *opaque);
-typedef int (*SlirpGetREventsCb)(int idx, void *opaque);
-
-/*
- * Callbacks from slirp
- */
-typedef struct SlirpCb {
- /*
- * Send an ethernet frame to the guest network. The opaque
- * parameter is the one given to slirp_init(). The function
- * doesn't need to send all the data and may return <len (no
- * buffering is done on libslirp side, so the data will be dropped
- * in this case). <0 reports an IO error.
- */
- SlirpWriteCb send_packet;
- /* Print a message for an error due to guest misbehavior. */
- void (*guest_error)(const char *msg, void *opaque);
- /* Return the virtual clock value in nanoseconds */
- int64_t (*clock_get_ns)(void *opaque);
- /* Create a new timer with the given callback and opaque data */
- void *(*timer_new)(SlirpTimerCb cb, void *cb_opaque, void *opaque);
- /* Remove and free a timer */
- void (*timer_free)(void *timer, void *opaque);
- /* Modify a timer to expire at @expire_time */
- void (*timer_mod)(void *timer, int64_t expire_time, void *opaque);
- /* Register a fd for future polling */
- void (*register_poll_fd)(int fd, void *opaque);
- /* Unregister a fd */
- void (*unregister_poll_fd)(int fd, void *opaque);
- /* Kick the io-thread, to signal that new events may be processed */
- void (*notify)(void *opaque);
-} SlirpCb;
-
-
-Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
- struct in_addr vnetmask, struct in_addr vhost,
- bool in6_enabled,
- struct in6_addr vprefix_addr6, uint8_t vprefix_len,
- struct in6_addr vhost6, const char *vhostname,
- const char *tftp_server_name,
- const char *tftp_path, const char *bootfile,
- struct in_addr vdhcp_start, struct in_addr vnameserver,
- struct in6_addr vnameserver6, const char **vdnssearch,
- const char *vdomainname,
- const SlirpCb *callbacks,
- void *opaque);
-void slirp_cleanup(Slirp *slirp);
-
-void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout,
- SlirpAddPollCb add_poll, void *opaque);
-
-void slirp_pollfds_poll(Slirp *slirp, int select_error,
- SlirpGetREventsCb get_revents, void *opaque);
-
-void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
-
-int slirp_add_hostfwd(Slirp *slirp, int is_udp,
- struct in_addr host_addr, int host_port,
- struct in_addr guest_addr, int guest_port);
-int slirp_remove_hostfwd(Slirp *slirp, int is_udp,
- struct in_addr host_addr, int host_port);
-int slirp_add_exec(Slirp *slirp, const char *cmdline,
- struct in_addr *guest_addr, int guest_port);
-int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque,
- struct in_addr *guest_addr, int guest_port);
-
-char *slirp_connection_info(Slirp *slirp);
-
-void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr,
- int guest_port, const uint8_t *buf, int size);
-size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
- int guest_port);
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* LIBSLIRP_H */
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef SLIRP_MAIN_H
-#define SLIRP_MAIN_H
-
-extern unsigned curtime;
-extern struct in_addr loopback_addr;
-extern unsigned long loopback_mask;
-
-int if_encap(Slirp *slirp, struct mbuf *ifm);
-ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-/*
- * mbuf's in SLiRP are much simpler than the real mbufs in
- * FreeBSD. They are fixed size, determined by the MTU,
- * so that one whole packet can fit. Mbuf's cannot be
- * chained together. If there's more data than the mbuf
- * could hold, an external g_malloced buffer is pointed to
- * by m_ext (and the data pointers) and M_EXT is set in
- * the flags
- */
-
-#include "slirp.h"
-
-#define MBUF_THRESH 30
-
-/*
- * Find a nice value for msize
- */
-#define SLIRP_MSIZE\
- (offsetof(struct mbuf, m_dat) + IF_MAXLINKHDR + TCPIPHDR_DELTA + IF_MTU)
-
-void
-m_init(Slirp *slirp)
-{
- slirp->m_freelist.qh_link = slirp->m_freelist.qh_rlink = &slirp->m_freelist;
- slirp->m_usedlist.qh_link = slirp->m_usedlist.qh_rlink = &slirp->m_usedlist;
-}
-
-void m_cleanup(Slirp *slirp)
-{
- struct mbuf *m, *next;
-
- m = (struct mbuf *) slirp->m_usedlist.qh_link;
- while ((struct quehead *) m != &slirp->m_usedlist) {
- next = m->m_next;
- if (m->m_flags & M_EXT) {
- g_free(m->m_ext);
- }
- g_free(m);
- m = next;
- }
- m = (struct mbuf *) slirp->m_freelist.qh_link;
- while ((struct quehead *) m != &slirp->m_freelist) {
- next = m->m_next;
- g_free(m);
- m = next;
- }
-}
-
-/*
- * Get an mbuf from the free list, if there are none
- * allocate one
- *
- * Because fragmentation can occur if we alloc new mbufs and
- * free old mbufs, we mark all mbufs above mbuf_thresh as M_DOFREE,
- * which tells m_free to actually g_free() it
- */
-struct mbuf *
-m_get(Slirp *slirp)
-{
- register struct mbuf *m;
- int flags = 0;
-
- DEBUG_CALL("m_get");
-
- if (slirp->m_freelist.qh_link == &slirp->m_freelist) {
- m = g_malloc(SLIRP_MSIZE);
- slirp->mbuf_alloced++;
- if (slirp->mbuf_alloced > MBUF_THRESH)
- flags = M_DOFREE;
- m->slirp = slirp;
- } else {
- m = (struct mbuf *) slirp->m_freelist.qh_link;
- remque(m);
- }
-
- /* Insert it in the used list */
- insque(m,&slirp->m_usedlist);
- m->m_flags = (flags | M_USEDLIST);
-
- /* Initialise it */
- m->m_size = SLIRP_MSIZE - offsetof(struct mbuf, m_dat);
- m->m_data = m->m_dat;
- m->m_len = 0;
- m->m_nextpkt = NULL;
- m->m_prevpkt = NULL;
- m->resolution_requested = false;
- m->expiration_date = (uint64_t)-1;
- DEBUG_ARG("m = %p", m);
- return m;
-}
-
-void
-m_free(struct mbuf *m)
-{
-
- DEBUG_CALL("m_free");
- DEBUG_ARG("m = %p", m);
-
- if(m) {
- /* Remove from m_usedlist */
- if (m->m_flags & M_USEDLIST)
- remque(m);
-
- /* If it's M_EXT, free() it */
- if (m->m_flags & M_EXT) {
- g_free(m->m_ext);
- }
- /*
- * Either free() it or put it on the free list
- */
- if (m->m_flags & M_DOFREE) {
- m->slirp->mbuf_alloced--;
- g_free(m);
- } else if ((m->m_flags & M_FREELIST) == 0) {
- insque(m,&m->slirp->m_freelist);
- m->m_flags = M_FREELIST; /* Clobber other flags */
- }
- } /* if(m) */
-}
-
-/*
- * Copy data from one mbuf to the end of
- * the other.. if result is too big for one mbuf, allocate
- * an M_EXT data segment
- */
-void
-m_cat(struct mbuf *m, struct mbuf *n)
-{
- /*
- * If there's no room, realloc
- */
- if (M_FREEROOM(m) < n->m_len)
- m_inc(m, m->m_len + n->m_len);
-
- memcpy(m->m_data+m->m_len, n->m_data, n->m_len);
- m->m_len += n->m_len;
-
- m_free(n);
-}
-
-
-/* make m 'size' bytes large from m_data */
-void
-m_inc(struct mbuf *m, int size)
-{
- int gapsize;
-
- /* some compilers throw up on gotos. This one we can fake. */
- if (M_ROOM(m) > size) {
- return;
- }
-
- if (m->m_flags & M_EXT) {
- gapsize = m->m_data - m->m_ext;
- m->m_ext = g_realloc(m->m_ext, size + gapsize);
- } else {
- gapsize = m->m_data - m->m_dat;
- m->m_ext = g_malloc(size + gapsize);
- memcpy(m->m_ext, m->m_dat, m->m_size);
- m->m_flags |= M_EXT;
- }
-
- m->m_data = m->m_ext + gapsize;
- m->m_size = size + gapsize;
-}
-
-
-
-void
-m_adj(struct mbuf *m, int len)
-{
- if (m == NULL)
- return;
- if (len >= 0) {
- /* Trim from head */
- m->m_data += len;
- m->m_len -= len;
- } else {
- /* Trim from tail */
- len = -len;
- m->m_len -= len;
- }
-}
-
-
-/*
- * Copy len bytes from m, starting off bytes into n
- */
-int
-m_copy(struct mbuf *n, struct mbuf *m, int off, int len)
-{
- if (len > M_FREEROOM(n))
- return -1;
-
- memcpy((n->m_data + n->m_len), (m->m_data + off), len);
- n->m_len += len;
- return 0;
-}
-
-
-/*
- * Given a pointer into an mbuf, return the mbuf
- * XXX This is a kludge, I should eliminate the need for it
- * Fortunately, it's not used often
- */
-struct mbuf *
-dtom(Slirp *slirp, void *dat)
-{
- struct mbuf *m;
-
- DEBUG_CALL("dtom");
- DEBUG_ARG("dat = %p", dat);
-
- /* bug corrected for M_EXT buffers */
- for (m = (struct mbuf *) slirp->m_usedlist.qh_link;
- (struct quehead *) m != &slirp->m_usedlist;
- m = m->m_next) {
- if (m->m_flags & M_EXT) {
- if( (char *)dat>=m->m_ext && (char *)dat<(m->m_ext + m->m_size) )
- return m;
- } else {
- if( (char *)dat >= m->m_dat && (char *)dat<(m->m_dat + m->m_size) )
- return m;
- }
- }
-
- DEBUG_ERROR("dtom failed");
-
- return (struct mbuf *)0;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)mbuf.h 8.3 (Berkeley) 1/21/94
- * mbuf.h,v 1.9 1994/11/14 13:54:20 bde Exp
- */
-
-#ifndef MBUF_H
-#define MBUF_H
-
-/*
- * Macros for type conversion
- * mtod(m,t) - convert mbuf pointer to data pointer of correct type
- */
-#define mtod(m,t) ((t)(m)->m_data)
-
-/* XXX About mbufs for slirp:
- * Only one mbuf is ever used in a chain, for each "cell" of data.
- * m_nextpkt points to the next packet, if fragmented.
- * If the data is too large, the M_EXT is used, and a larger block
- * is alloced. Therefore, m_free[m] must check for M_EXT and if set
- * free the m_ext. This is inefficient memory-wise, but who cares.
- */
-
-/*
- * mbufs allow to have a gap between the start of the allocated buffer (m_ext if
- * M_EXT is set, m_dat otherwise) and the in-use data:
- *
- * |--gapsize----->|---m_len------->
- * |----------m_size------------------------------>
- * |----M_ROOM-------------------->
- * |-M_FREEROOM-->
- *
- * ^ ^ ^
- * m_dat/m_ext m_data end of buffer
- */
-
-/*
- * How much room is in the mbuf, from m_data to the end of the mbuf
- */
-#define M_ROOM(m) ((m->m_flags & M_EXT)? \
- (((m)->m_ext + (m)->m_size) - (m)->m_data) \
- : \
- (((m)->m_dat + (m)->m_size) - (m)->m_data))
-
-/*
- * How much free room there is
- */
-#define M_FREEROOM(m) (M_ROOM(m) - (m)->m_len)
-
-struct mbuf {
- /* XXX should union some of these! */
- /* header at beginning of each mbuf: */
- struct mbuf *m_next; /* Linked list of mbufs */
- struct mbuf *m_prev;
- struct mbuf *m_nextpkt; /* Next packet in queue/record */
- struct mbuf *m_prevpkt; /* Flags aren't used in the output queue */
- int m_flags; /* Misc flags */
-
- int m_size; /* Size of mbuf, from m_dat or m_ext */
- struct socket *m_so;
-
- char *m_data; /* Current location of data */
- int m_len; /* Amount of data in this mbuf, from m_data */
-
- Slirp *slirp;
- bool resolution_requested;
- uint64_t expiration_date;
- char *m_ext;
- /* start of dynamic buffer area, must be last element */
- char m_dat[];
-};
-
-#define ifq_prev m_prev
-#define ifq_next m_next
-#define ifs_prev m_prevpkt
-#define ifs_next m_nextpkt
-#define ifq_so m_so
-
-#define M_EXT 0x01 /* m_ext points to more (malloced) data */
-#define M_FREELIST 0x02 /* mbuf is on free list */
-#define M_USEDLIST 0x04 /* XXX mbuf is on used list (for dtom()) */
-#define M_DOFREE 0x08 /* when m_free is called on the mbuf, free()
- * it rather than putting it on the free list */
-
-void m_init(Slirp *);
-void m_cleanup(Slirp *slirp);
-struct mbuf * m_get(Slirp *);
-void m_free(struct mbuf *);
-void m_cat(register struct mbuf *, register struct mbuf *);
-void m_inc(struct mbuf *, int);
-void m_adj(struct mbuf *, int);
-int m_copy(struct mbuf *, struct mbuf *, int, int);
-struct mbuf * dtom(Slirp *, void *);
-
-static inline void ifs_init(struct mbuf *ifm)
-{
- ifm->ifs_next = ifm->ifs_prev = ifm;
-}
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-inline void
-insque(void *a, void *b)
-{
- register struct quehead *element = (struct quehead *) a;
- register struct quehead *head = (struct quehead *) b;
- element->qh_link = head->qh_link;
- head->qh_link = (struct quehead *)element;
- element->qh_rlink = (struct quehead *)head;
- ((struct quehead *)(element->qh_link))->qh_rlink
- = (struct quehead *)element;
-}
-
-inline void
-remque(void *a)
-{
- register struct quehead *element = (struct quehead *) a;
- ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
- ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
- element->qh_rlink = NULL;
-}
-
-struct gfwd_list *
-add_guestfwd(struct gfwd_list **ex_ptr,
- SlirpWriteCb write_cb, void *opaque,
- struct in_addr addr, int port)
-{
- struct gfwd_list *f = g_new0(struct gfwd_list, 1);
-
- f->write_cb = write_cb;
- f->opaque = opaque;
- f->ex_fport = port;
- f->ex_addr = addr;
- f->ex_next = *ex_ptr;
- *ex_ptr = f;
-
- return f;
-}
-
-struct gfwd_list *
-add_exec(struct gfwd_list **ex_ptr, const char *cmdline,
- struct in_addr addr, int port)
-{
- struct gfwd_list *f = add_guestfwd(ex_ptr, NULL, NULL, addr, port);
-
- f->ex_exec = g_strdup(cmdline);
-
- return f;
-}
-
-static int
-slirp_socketpair_with_oob(int sv[2])
-{
- struct sockaddr_in addr = {
- .sin_family = AF_INET,
- .sin_port = 0,
- .sin_addr.s_addr = INADDR_ANY,
- };
- socklen_t addrlen = sizeof(addr);
- int ret, s;
-
- sv[1] = -1;
- s = slirp_socket(AF_INET, SOCK_STREAM, 0);
- if (s < 0 || bind(s, (struct sockaddr *)&addr, addrlen) < 0 ||
- listen(s, 1) < 0 ||
- getsockname(s, (struct sockaddr *)&addr, &addrlen) < 0) {
- goto err;
- }
-
- sv[1] = slirp_socket(AF_INET, SOCK_STREAM, 0);
- if (sv[1] < 0) {
- goto err;
- }
- /*
- * This connect won't block because we've already listen()ed on
- * the server end (even though we won't accept() the connection
- * until later on).
- */
- do {
- ret = connect(sv[1], (struct sockaddr *)&addr, addrlen);
- } while (ret < 0 && errno == EINTR);
- if (ret < 0) {
- goto err;
- }
-
- do {
- sv[0] = accept(s, (struct sockaddr *)&addr, &addrlen);
- } while (sv[0] < 0 && errno == EINTR);
- if (sv[0] < 0) {
- goto err;
- }
-
- closesocket(s);
- return 0;
-
-err:
- g_critical("slirp_socketpair(): %s", strerror(errno));
- if (s >= 0) {
- closesocket(s);
- }
- if (sv[1] >= 0) {
- closesocket(sv[1]);
- }
- return -1;
-}
-
-static void
-fork_exec_child_setup(gpointer data)
-{
-#ifndef _WIN32
- setsid();
-#endif
-}
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-
-#if !GLIB_CHECK_VERSION(2, 58, 0)
-typedef struct SlirpGSpawnFds {
- GSpawnChildSetupFunc child_setup;
- gpointer user_data;
- gint stdin_fd;
- gint stdout_fd;
- gint stderr_fd;
-} SlirpGSpawnFds;
-
-static inline void
-slirp_gspawn_fds_setup(gpointer user_data)
-{
- SlirpGSpawnFds *q = (SlirpGSpawnFds *)user_data;
-
- dup2(q->stdin_fd, 0);
- dup2(q->stdout_fd, 1);
- dup2(q->stderr_fd, 2);
- q->child_setup(q->user_data);
-}
-#endif
-
-static inline gboolean
-g_spawn_async_with_fds_slirp(const gchar *working_directory,
- gchar **argv,
- gchar **envp,
- GSpawnFlags flags,
- GSpawnChildSetupFunc child_setup,
- gpointer user_data,
- GPid *child_pid,
- gint stdin_fd,
- gint stdout_fd,
- gint stderr_fd,
- GError **error)
-{
-#if GLIB_CHECK_VERSION(2, 58, 0)
- return g_spawn_async_with_fds(working_directory, argv, envp, flags,
- child_setup, user_data,
- child_pid, stdin_fd, stdout_fd, stderr_fd,
- error);
-#else
- SlirpGSpawnFds setup = {
- .child_setup = child_setup,
- .user_data = user_data,
- .stdin_fd = stdin_fd,
- .stdout_fd = stdout_fd,
- .stderr_fd = stderr_fd,
- };
-
- return g_spawn_async(working_directory, argv, envp, flags,
- slirp_gspawn_fds_setup, &setup,
- child_pid, error);
-#endif
-}
-
-#define g_spawn_async_with_fds(wd, argv, env, f, c, d, p, ifd, ofd, efd, err) \
- g_spawn_async_with_fds_slirp(wd, argv, env, f, c, d, p, ifd, ofd, efd, err)
-
-#pragma GCC diagnostic pop
-
-int
-fork_exec(struct socket *so, const char *ex)
-{
- GError *err = NULL;
- char **argv;
- int opt, sp[2];
-
- DEBUG_CALL("fork_exec");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("ex = %p", ex);
-
- if (slirp_socketpair_with_oob(sp) < 0) {
- return 0;
- }
-
- argv = g_strsplit(ex, " ", -1);
- g_spawn_async_with_fds(NULL /* cwd */,
- argv,
- NULL /* env */,
- G_SPAWN_SEARCH_PATH,
- fork_exec_child_setup, NULL /* data */,
- NULL /* child_pid */,
- sp[1], sp[1], sp[1],
- &err);
- g_strfreev(argv);
-
- if (err) {
- g_critical("fork_exec: %s", err->message);
- g_error_free(err);
- closesocket(sp[0]);
- closesocket(sp[1]);
- return 0;
- }
-
- so->s = sp[0];
- closesocket(sp[1]);
- slirp_socket_set_fast_reuse(so->s);
- opt = 1;
- setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
- slirp_set_nonblock(so->s);
- so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
- return 1;
-}
-
-char *slirp_connection_info(Slirp *slirp)
-{
- GString *str = g_string_new(NULL);
- const char * const tcpstates[] = {
- [TCPS_CLOSED] = "CLOSED",
- [TCPS_LISTEN] = "LISTEN",
- [TCPS_SYN_SENT] = "SYN_SENT",
- [TCPS_SYN_RECEIVED] = "SYN_RCVD",
- [TCPS_ESTABLISHED] = "ESTABLISHED",
- [TCPS_CLOSE_WAIT] = "CLOSE_WAIT",
- [TCPS_FIN_WAIT_1] = "FIN_WAIT_1",
- [TCPS_CLOSING] = "CLOSING",
- [TCPS_LAST_ACK] = "LAST_ACK",
- [TCPS_FIN_WAIT_2] = "FIN_WAIT_2",
- [TCPS_TIME_WAIT] = "TIME_WAIT",
- };
- struct in_addr dst_addr;
- struct sockaddr_in src;
- socklen_t src_len;
- uint16_t dst_port;
- struct socket *so;
- const char *state;
- char buf[20];
-
- g_string_append_printf(str,
- " Protocol[State] FD Source Address Port "
- "Dest. Address Port RecvQ SendQ\n");
-
- for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
- if (so->so_state & SS_HOSTFWD) {
- state = "HOST_FORWARD";
- } else if (so->so_tcpcb) {
- state = tcpstates[so->so_tcpcb->t_state];
- } else {
- state = "NONE";
- }
- if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) {
- src_len = sizeof(src);
- getsockname(so->s, (struct sockaddr *)&src, &src_len);
- dst_addr = so->so_laddr;
- dst_port = so->so_lport;
- } else {
- src.sin_addr = so->so_laddr;
- src.sin_port = so->so_lport;
- dst_addr = so->so_faddr;
- dst_port = so->so_fport;
- }
- snprintf(buf, sizeof(buf), " TCP[%s]", state);
- g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
- ntohs(src.sin_port));
- g_string_append_printf(str, "%15s %5d %5d %5d\n",
- inet_ntoa(dst_addr), ntohs(dst_port),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
- }
-
- for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
- if (so->so_state & SS_HOSTFWD) {
- snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
- src_len = sizeof(src);
- getsockname(so->s, (struct sockaddr *)&src, &src_len);
- dst_addr = so->so_laddr;
- dst_port = so->so_lport;
- } else {
- snprintf(buf, sizeof(buf), " UDP[%d sec]",
- (so->so_expire - curtime) / 1000);
- src.sin_addr = so->so_laddr;
- src.sin_port = so->so_lport;
- dst_addr = so->so_faddr;
- dst_port = so->so_fport;
- }
- g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
- ntohs(src.sin_port));
- g_string_append_printf(str, "%15s %5d %5d %5d\n",
- inet_ntoa(dst_addr), ntohs(dst_port),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
- }
-
- for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
- snprintf(buf, sizeof(buf), " ICMP[%d sec]",
- (so->so_expire - curtime) / 1000);
- src.sin_addr = so->so_laddr;
- dst_addr = so->so_faddr;
- g_string_append_printf(str, "%-19s %3d %15s - ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
- g_string_append_printf(str, "%15s - %5d %5d\n", inet_ntoa(dst_addr),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
- }
-
- return g_string_free(str, FALSE);
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef MISC_H
-#define MISC_H
-
-#include "libslirp.h"
-
-struct gfwd_list {
- SlirpWriteCb write_cb;
- void *opaque;
- struct in_addr ex_addr; /* Server address */
- int ex_fport; /* Port to telnet to */
- char *ex_exec; /* Command line of what to exec */
- struct gfwd_list *ex_next;
-};
-
-#define EMU_NONE 0x0
-
-/* TCP emulations */
-#define EMU_CTL 0x1
-#define EMU_FTP 0x2
-#define EMU_KSH 0x3
-#define EMU_IRC 0x4
-#define EMU_REALAUDIO 0x5
-#define EMU_RLOGIN 0x6
-#define EMU_IDENT 0x7
-
-#define EMU_NOCONNECT 0x10 /* Don't connect */
-
-struct tos_t {
- uint16_t lport;
- uint16_t fport;
- uint8_t tos;
- uint8_t emu;
-};
-
-struct emu_t {
- uint16_t lport;
- uint16_t fport;
- uint8_t tos;
- uint8_t emu;
- struct emu_t *next;
-};
-
-struct slirp_quehead {
- struct slirp_quehead *qh_link;
- struct slirp_quehead *qh_rlink;
-};
-
-void slirp_insque(void *, void *);
-void slirp_remque(void *);
-int fork_exec(struct socket *so, const char *ex);
-
-struct gfwd_list *
-add_guestfwd(struct gfwd_list **ex_ptr,
- SlirpWriteCb write_cb, void *opaque,
- struct in_addr addr, int port);
-
-struct gfwd_list *
-add_exec(struct gfwd_list **ex_ptr, const char *cmdline,
- struct in_addr addr, int port);
-
-#endif
+++ /dev/null
-/*
- * Copyright Gavin Shan, IBM Corporation 2016.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef NCSI_PKT_H
-#define NCSI_PKT_H
-
-/* from linux/net/ncsi/ncsi-pkt.h */
-#define __be32 uint32_t
-#define __be16 uint16_t
-
-struct ncsi_pkt_hdr {
- unsigned char mc_id; /* Management controller ID */
- unsigned char revision; /* NCSI version - 0x01 */
- unsigned char reserved; /* Reserved */
- unsigned char id; /* Packet sequence number */
- unsigned char type; /* Packet type */
- unsigned char channel; /* Network controller ID */
- __be16 length; /* Payload length */
- __be32 reserved1[2]; /* Reserved */
-};
-
-struct ncsi_cmd_pkt_hdr {
- struct ncsi_pkt_hdr common; /* Common NCSI packet header */
-};
-
-struct ncsi_rsp_pkt_hdr {
- struct ncsi_pkt_hdr common; /* Common NCSI packet header */
- __be16 code; /* Response code */
- __be16 reason; /* Response reason */
-};
-
-struct ncsi_aen_pkt_hdr {
- struct ncsi_pkt_hdr common; /* Common NCSI packet header */
- unsigned char reserved2[3]; /* Reserved */
- unsigned char type; /* AEN packet type */
-};
-
-/* NCSI common command packet */
-struct ncsi_cmd_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be32 checksum; /* Checksum */
- unsigned char pad[26];
-};
-
-struct ncsi_rsp_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Select Package */
-struct ncsi_cmd_sp_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char reserved[3]; /* Reserved */
- unsigned char hw_arbitration; /* HW arbitration */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Disable Channel */
-struct ncsi_cmd_dc_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char reserved[3]; /* Reserved */
- unsigned char ald; /* Allow link down */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Reset Channel */
-struct ncsi_cmd_rc_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be32 reserved; /* Reserved */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* AEN Enable */
-struct ncsi_cmd_ae_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char reserved[3]; /* Reserved */
- unsigned char mc_id; /* MC ID */
- __be32 mode; /* AEN working mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[18];
-};
-
-/* Set Link */
-struct ncsi_cmd_sl_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be32 mode; /* Link working mode */
- __be32 oem_mode; /* OEM link mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[18];
-};
-
-/* Set VLAN Filter */
-struct ncsi_cmd_svf_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be16 reserved; /* Reserved */
- __be16 vlan; /* VLAN ID */
- __be16 reserved1; /* Reserved */
- unsigned char index; /* VLAN table index */
- unsigned char enable; /* Enable or disable */
- __be32 checksum; /* Checksum */
- unsigned char pad[14];
-};
-
-/* Enable VLAN */
-struct ncsi_cmd_ev_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char reserved[3]; /* Reserved */
- unsigned char mode; /* VLAN filter mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Set MAC Address */
-struct ncsi_cmd_sma_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char mac[6]; /* MAC address */
- unsigned char index; /* MAC table index */
- unsigned char at_e; /* Addr type and operation */
- __be32 checksum; /* Checksum */
- unsigned char pad[18];
-};
-
-/* Enable Broadcast Filter */
-struct ncsi_cmd_ebf_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be32 mode; /* Filter mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Enable Global Multicast Filter */
-struct ncsi_cmd_egmf_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- __be32 mode; /* Global MC mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Set NCSI Flow Control */
-struct ncsi_cmd_snfc_pkt {
- struct ncsi_cmd_pkt_hdr cmd; /* Command header */
- unsigned char reserved[3]; /* Reserved */
- unsigned char mode; /* Flow control mode */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* Get Link Status */
-struct ncsi_rsp_gls_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 status; /* Link status */
- __be32 other; /* Other indications */
- __be32 oem_status; /* OEM link status */
- __be32 checksum;
- unsigned char pad[10];
-};
-
-/* Get Version ID */
-struct ncsi_rsp_gvi_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 ncsi_version; /* NCSI version */
- unsigned char reserved[3]; /* Reserved */
- unsigned char alpha2; /* NCSI version */
- unsigned char fw_name[12]; /* f/w name string */
- __be32 fw_version; /* f/w version */
- __be16 pci_ids[4]; /* PCI IDs */
- __be32 mf_id; /* Manufacture ID */
- __be32 checksum;
-};
-
-/* Get Capabilities */
-struct ncsi_rsp_gc_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 cap; /* Capabilities */
- __be32 bc_cap; /* Broadcast cap */
- __be32 mc_cap; /* Multicast cap */
- __be32 buf_cap; /* Buffering cap */
- __be32 aen_cap; /* AEN cap */
- unsigned char vlan_cnt; /* VLAN filter count */
- unsigned char mixed_cnt; /* Mix filter count */
- unsigned char mc_cnt; /* MC filter count */
- unsigned char uc_cnt; /* UC filter count */
- unsigned char reserved[2]; /* Reserved */
- unsigned char vlan_mode; /* VLAN mode */
- unsigned char channel_cnt; /* Channel count */
- __be32 checksum; /* Checksum */
-};
-
-/* Get Parameters */
-struct ncsi_rsp_gp_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- unsigned char mac_cnt; /* Number of MAC addr */
- unsigned char reserved[2]; /* Reserved */
- unsigned char mac_enable; /* MAC addr enable flags */
- unsigned char vlan_cnt; /* VLAN tag count */
- unsigned char reserved1; /* Reserved */
- __be16 vlan_enable; /* VLAN tag enable flags */
- __be32 link_mode; /* Link setting */
- __be32 bc_mode; /* BC filter mode */
- __be32 valid_modes; /* Valid mode parameters */
- unsigned char vlan_mode; /* VLAN mode */
- unsigned char fc_mode; /* Flow control mode */
- unsigned char reserved2[2]; /* Reserved */
- __be32 aen_mode; /* AEN mode */
- unsigned char mac[6]; /* Supported MAC addr */
- __be16 vlan; /* Supported VLAN tags */
- __be32 checksum; /* Checksum */
-};
-
-/* Get Controller Packet Statistics */
-struct ncsi_rsp_gcps_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 cnt_hi; /* Counter cleared */
- __be32 cnt_lo; /* Counter cleared */
- __be32 rx_bytes; /* Rx bytes */
- __be32 tx_bytes; /* Tx bytes */
- __be32 rx_uc_pkts; /* Rx UC packets */
- __be32 rx_mc_pkts; /* Rx MC packets */
- __be32 rx_bc_pkts; /* Rx BC packets */
- __be32 tx_uc_pkts; /* Tx UC packets */
- __be32 tx_mc_pkts; /* Tx MC packets */
- __be32 tx_bc_pkts; /* Tx BC packets */
- __be32 fcs_err; /* FCS errors */
- __be32 align_err; /* Alignment errors */
- __be32 false_carrier; /* False carrier detection */
- __be32 runt_pkts; /* Rx runt packets */
- __be32 jabber_pkts; /* Rx jabber packets */
- __be32 rx_pause_xon; /* Rx pause XON frames */
- __be32 rx_pause_xoff; /* Rx XOFF frames */
- __be32 tx_pause_xon; /* Tx XON frames */
- __be32 tx_pause_xoff; /* Tx XOFF frames */
- __be32 tx_s_collision; /* Single collision frames */
- __be32 tx_m_collision; /* Multiple collision frames */
- __be32 l_collision; /* Late collision frames */
- __be32 e_collision; /* Excessive collision frames */
- __be32 rx_ctl_frames; /* Rx control frames */
- __be32 rx_64_frames; /* Rx 64-bytes frames */
- __be32 rx_127_frames; /* Rx 65-127 bytes frames */
- __be32 rx_255_frames; /* Rx 128-255 bytes frames */
- __be32 rx_511_frames; /* Rx 256-511 bytes frames */
- __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */
- __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */
- __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */
- __be32 tx_64_frames; /* Tx 64-bytes frames */
- __be32 tx_127_frames; /* Tx 65-127 bytes frames */
- __be32 tx_255_frames; /* Tx 128-255 bytes frames */
- __be32 tx_511_frames; /* Tx 256-511 bytes frames */
- __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */
- __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */
- __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */
- __be32 rx_valid_bytes; /* Rx valid bytes */
- __be32 rx_runt_pkts; /* Rx error runt packets */
- __be32 rx_jabber_pkts; /* Rx error jabber packets */
- __be32 checksum; /* Checksum */
-};
-
-/* Get NCSI Statistics */
-struct ncsi_rsp_gns_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 rx_cmds; /* Rx NCSI commands */
- __be32 dropped_cmds; /* Dropped commands */
- __be32 cmd_type_errs; /* Command type errors */
- __be32 cmd_csum_errs; /* Command checksum errors */
- __be32 rx_pkts; /* Rx NCSI packets */
- __be32 tx_pkts; /* Tx NCSI packets */
- __be32 tx_aen_pkts; /* Tx AEN packets */
- __be32 checksum; /* Checksum */
-};
-
-/* Get NCSI Pass-through Statistics */
-struct ncsi_rsp_gnpts_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 tx_pkts; /* Tx packets */
- __be32 tx_dropped; /* Tx dropped packets */
- __be32 tx_channel_err; /* Tx channel errors */
- __be32 tx_us_err; /* Tx undersize errors */
- __be32 rx_pkts; /* Rx packets */
- __be32 rx_dropped; /* Rx dropped packets */
- __be32 rx_channel_err; /* Rx channel errors */
- __be32 rx_us_err; /* Rx undersize errors */
- __be32 rx_os_err; /* Rx oversize errors */
- __be32 checksum; /* Checksum */
-};
-
-/* Get package status */
-struct ncsi_rsp_gps_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- __be32 status; /* Hardware arbitration status */
- __be32 checksum;
-};
-
-/* Get package UUID */
-struct ncsi_rsp_gpuuid_pkt {
- struct ncsi_rsp_pkt_hdr rsp; /* Response header */
- unsigned char uuid[16]; /* UUID */
- __be32 checksum;
-};
-
-/* AEN: Link State Change */
-struct ncsi_aen_lsc_pkt {
- struct ncsi_aen_pkt_hdr aen; /* AEN header */
- __be32 status; /* Link status */
- __be32 oem_status; /* OEM link status */
- __be32 checksum; /* Checksum */
- unsigned char pad[14];
-};
-
-/* AEN: Configuration Required */
-struct ncsi_aen_cr_pkt {
- struct ncsi_aen_pkt_hdr aen; /* AEN header */
- __be32 checksum; /* Checksum */
- unsigned char pad[22];
-};
-
-/* AEN: Host Network Controller Driver Status Change */
-struct ncsi_aen_hncdsc_pkt {
- struct ncsi_aen_pkt_hdr aen; /* AEN header */
- __be32 status; /* Status */
- __be32 checksum; /* Checksum */
- unsigned char pad[18];
-};
-
-/* NCSI packet revision */
-#define NCSI_PKT_REVISION 0x01
-
-/* NCSI packet commands */
-#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */
-#define NCSI_PKT_CMD_SP 0x01 /* Select Package */
-#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */
-#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */
-#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */
-#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */
-#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */
-#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */
-#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */
-#define NCSI_PKT_CMD_SL 0x09 /* Set Link */
-#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */
-#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */
-#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */
-#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */
-#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */
-#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */
-#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */
-#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */
-#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */
-#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */
-#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */
-#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */
-#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */
-#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */
-#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */
-#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */
-#define NCSI_PKT_CMD_GPS 0x1b /* Get package status */
-#define NCSI_PKT_CMD_OEM 0x50 /* OEM */
-#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */
-#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */
-
-/* NCSI packet responses */
-#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80)
-#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80)
-#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80)
-#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80)
-#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80)
-#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80)
-#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80)
-#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80)
-#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80)
-#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80)
-#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80)
-#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80)
-#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80)
-#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80)
-#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80)
-#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80)
-#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80)
-#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80)
-#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80)
-#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80)
-#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80)
-#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80)
-#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80)
-#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80)
-#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80)
-#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80)
-#define NCSI_PKT_RSP_GPS (NCSI_PKT_CMD_GPS + 0x80)
-#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80)
-#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80)
-#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 0x80)
-
-/* NCSI response code/reason */
-#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */
-#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */
-#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */
-#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */
-#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */
-#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */
-#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */
-#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */
-#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */
-#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */
-#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */
-
-/* NCSI AEN packet type */
-#define NCSI_PKT_AEN 0xFF /* AEN Packet */
-#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */
-#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */
-#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */
-
-#endif /* NCSI_PKT_H */
+++ /dev/null
-/*
- * NC-SI (Network Controller Sideband Interface) "echo" model
- *
- * Copyright (C) 2016-2018 IBM Corp.
- *
- * This code is licensed under the GPL version 2 or later. See the
- * COPYING file in the top-level directory.
- */
-#include "slirp.h"
-
-#include "ncsi-pkt.h"
-
-static uint32_t ncsi_calculate_checksum(uint16_t *data, int len)
-{
- uint32_t checksum = 0;
- int i;
-
- /*
- * 32-bit unsigned sum of the NC-SI packet header and NC-SI packet
- * payload interpreted as a series of 16-bit unsigned integer values.
- */
- for (i = 0; i < len; i++) {
- checksum += htons(data[i]);
- }
-
- checksum = (~checksum + 1);
- return checksum;
-}
-
-/* Get Capabilities */
-static int ncsi_rsp_handler_gc(struct ncsi_rsp_pkt_hdr *rnh)
-{
- struct ncsi_rsp_gc_pkt *rsp = (struct ncsi_rsp_gc_pkt *) rnh;
-
- rsp->cap = htonl(~0);
- rsp->bc_cap = htonl(~0);
- rsp->mc_cap = htonl(~0);
- rsp->buf_cap = htonl(~0);
- rsp->aen_cap = htonl(~0);
- rsp->vlan_mode = 0xff;
- rsp->uc_cnt = 2;
- return 0;
-}
-
-/* Get Link status */
-static int ncsi_rsp_handler_gls(struct ncsi_rsp_pkt_hdr *rnh)
-{
- struct ncsi_rsp_gls_pkt *rsp = (struct ncsi_rsp_gls_pkt *) rnh;
-
- rsp->status = htonl(0x1);
- return 0;
-}
-
-/* Get Parameters */
-static int ncsi_rsp_handler_gp(struct ncsi_rsp_pkt_hdr *rnh)
-{
- struct ncsi_rsp_gp_pkt *rsp = (struct ncsi_rsp_gp_pkt *) rnh;
-
- /* no MAC address filters or VLAN filters on the channel */
- rsp->mac_cnt = 0;
- rsp->mac_enable = 0;
- rsp->vlan_cnt = 0;
- rsp->vlan_enable = 0;
-
- return 0;
-}
-
-static const struct ncsi_rsp_handler {
- unsigned char type;
- int payload;
- int (*handler)(struct ncsi_rsp_pkt_hdr *rnh);
-} ncsi_rsp_handlers[] = {
- { NCSI_PKT_RSP_CIS, 4, NULL },
- { NCSI_PKT_RSP_SP, 4, NULL },
- { NCSI_PKT_RSP_DP, 4, NULL },
- { NCSI_PKT_RSP_EC, 4, NULL },
- { NCSI_PKT_RSP_DC, 4, NULL },
- { NCSI_PKT_RSP_RC, 4, NULL },
- { NCSI_PKT_RSP_ECNT, 4, NULL },
- { NCSI_PKT_RSP_DCNT, 4, NULL },
- { NCSI_PKT_RSP_AE, 4, NULL },
- { NCSI_PKT_RSP_SL, 4, NULL },
- { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
- { NCSI_PKT_RSP_SVF, 4, NULL },
- { NCSI_PKT_RSP_EV, 4, NULL },
- { NCSI_PKT_RSP_DV, 4, NULL },
- { NCSI_PKT_RSP_SMA, 4, NULL },
- { NCSI_PKT_RSP_EBF, 4, NULL },
- { NCSI_PKT_RSP_DBF, 4, NULL },
- { NCSI_PKT_RSP_EGMF, 4, NULL },
- { NCSI_PKT_RSP_DGMF, 4, NULL },
- { NCSI_PKT_RSP_SNFC, 4, NULL },
- { NCSI_PKT_RSP_GVI, 40, NULL },
- { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
- { NCSI_PKT_RSP_GP, 40, ncsi_rsp_handler_gp },
- { NCSI_PKT_RSP_GCPS, 172, NULL },
- { NCSI_PKT_RSP_GNS, 172, NULL },
- { NCSI_PKT_RSP_GNPTS, 172, NULL },
- { NCSI_PKT_RSP_GPS, 8, NULL },
- { NCSI_PKT_RSP_OEM, 0, NULL },
- { NCSI_PKT_RSP_PLDM, 0, NULL },
- { NCSI_PKT_RSP_GPUUID, 20, NULL }
-};
-
-/*
- * packet format : ncsi header + payload + checksum
- */
-#define NCSI_MAX_PAYLOAD 172
-#define NCSI_MAX_LEN (sizeof(struct ncsi_pkt_hdr) + NCSI_MAX_PAYLOAD + 4)
-
-void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
-{
- struct ncsi_pkt_hdr *nh = (struct ncsi_pkt_hdr *)(pkt + ETH_HLEN);
- uint8_t ncsi_reply[ETH_HLEN + NCSI_MAX_LEN];
- struct ethhdr *reh = (struct ethhdr *)ncsi_reply;
- struct ncsi_rsp_pkt_hdr *rnh = (struct ncsi_rsp_pkt_hdr *)
- (ncsi_reply + ETH_HLEN);
- const struct ncsi_rsp_handler *handler = NULL;
- int i;
- int ncsi_rsp_len = sizeof(*nh);
- uint32_t checksum;
- uint32_t *pchecksum;
-
- memset(ncsi_reply, 0, sizeof(ncsi_reply));
-
- memset(reh->h_dest, 0xff, ETH_ALEN);
- memset(reh->h_source, 0xff, ETH_ALEN);
- reh->h_proto = htons(ETH_P_NCSI);
-
- for (i = 0; i < G_N_ELEMENTS(ncsi_rsp_handlers); i++) {
- if (ncsi_rsp_handlers[i].type == nh->type + 0x80) {
- handler = &ncsi_rsp_handlers[i];
- break;
- }
- }
-
- rnh->common.mc_id = nh->mc_id;
- rnh->common.revision = NCSI_PKT_REVISION;
- rnh->common.id = nh->id;
- rnh->common.type = nh->type + 0x80;
- rnh->common.channel = nh->channel;
-
- if (handler) {
- rnh->common.length = htons(handler->payload);
- rnh->code = htons(NCSI_PKT_RSP_C_COMPLETED);
- rnh->reason = htons(NCSI_PKT_RSP_R_NO_ERROR);
-
- if (handler->handler) {
- /* TODO: handle errors */
- handler->handler(rnh);
- }
- ncsi_rsp_len += handler->payload;
- } else {
- rnh->common.length = 0;
- rnh->code = htons(NCSI_PKT_RSP_C_UNAVAILABLE);
- rnh->reason = htons(NCSI_PKT_RSP_R_UNKNOWN);
- }
-
- /* Add the optional checksum at the end of the frame. */
- checksum = ncsi_calculate_checksum((uint16_t *) rnh, ncsi_rsp_len);
- pchecksum = (uint32_t *)((void *) rnh + ncsi_rsp_len);
- *pchecksum = htonl(checksum);
- ncsi_rsp_len += 4;
-
- slirp_send_packet_all(slirp, ncsi_reply, ETH_HLEN + ncsi_rsp_len);
-}
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
- */
-
-#include "slirp.h"
-
-void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
- uint8_t ethaddr[ETH_ALEN])
-{
- char addrstr[INET6_ADDRSTRLEN];
- NdpTable *ndp_table = &slirp->ndp_table;
- int i;
-
- inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
-
- DEBUG_CALL("ndp_table_add");
- DEBUG_ARG("ip = %s", addrstr);
- DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
- ethaddr[0], ethaddr[1], ethaddr[2],
- ethaddr[3], ethaddr[4], ethaddr[5]);
-
- if (IN6_IS_ADDR_MULTICAST(&ip_addr) || in6_zero(&ip_addr)) {
- /* Do not register multicast or unspecified addresses */
- DEBUG_CALL(" abort: do not register multicast or unspecified address");
- return;
- }
-
- /* Search for an entry */
- for (i = 0; i < NDP_TABLE_SIZE; i++) {
- if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
- DEBUG_CALL(" already in table: update the entry");
- /* Update the entry */
- memcpy(ndp_table->table[i].eth_addr, ethaddr, ETH_ALEN);
- return;
- }
- }
-
- /* No entry found, create a new one */
- DEBUG_CALL(" create new entry");
- ndp_table->table[ndp_table->next_victim].ip_addr = ip_addr;
- memcpy(ndp_table->table[ndp_table->next_victim].eth_addr,
- ethaddr, ETH_ALEN);
- ndp_table->next_victim = (ndp_table->next_victim + 1) % NDP_TABLE_SIZE;
-}
-
-bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
- uint8_t out_ethaddr[ETH_ALEN])
-{
- char addrstr[INET6_ADDRSTRLEN];
- NdpTable *ndp_table = &slirp->ndp_table;
- int i;
-
- inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
-
- DEBUG_CALL("ndp_table_search");
- DEBUG_ARG("ip = %s", addrstr);
-
- assert(!in6_zero(&ip_addr));
-
- /* Multicast address: fec0::abcd:efgh/8 -> 33:33:ab:cd:ef:gh */
- if (IN6_IS_ADDR_MULTICAST(&ip_addr)) {
- out_ethaddr[0] = 0x33; out_ethaddr[1] = 0x33;
- out_ethaddr[2] = ip_addr.s6_addr[12];
- out_ethaddr[3] = ip_addr.s6_addr[13];
- out_ethaddr[4] = ip_addr.s6_addr[14];
- out_ethaddr[5] = ip_addr.s6_addr[15];
- DEBUG_ARG("multicast addr = %02x:%02x:%02x:%02x:%02x:%02x",
- out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
- out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
- return 1;
- }
-
- for (i = 0; i < NDP_TABLE_SIZE; i++) {
- if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
- memcpy(out_ethaddr, ndp_table->table[i].eth_addr, ETH_ALEN);
- DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
- out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
- out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
- return 1;
- }
- }
-
- DEBUG_CALL(" ip not found in table");
- return 0;
-}
+++ /dev/null
-/* $NetBSD: queue.h,v 1.52 2009/04/20 09:56:08 mschuett Exp $ */
-
-/*
- * slirp version: Copy from QEMU, removed all but tail queues.
- */
-
-/*
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)queue.h 8.5 (Berkeley) 8/20/94
- */
-
-#ifndef QTAILQ_H
-#define QTAILQ_H
-
-/*
- * A tail queue is headed by a pair of pointers, one to the head of the
- * list and the other to the tail of the list. The elements are doubly
- * linked so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before or
- * after an existing element, at the head of the list, or at the end of
- * the list. A tail queue may be traversed in either direction.
- */
-typedef struct QTailQLink {
- void *tql_next;
- struct QTailQLink *tql_prev;
-} QTailQLink;
-
-/*
- * Tail queue definitions. The union acts as a poor man template, as if
- * it were QTailQLink<type>.
- */
-#define QTAILQ_HEAD(name, type) \
- union name { \
- struct type *tqh_first; /* first element */ \
- QTailQLink tqh_circ; /* link for circular backwards list */ \
- }
-
-#define QTAILQ_HEAD_INITIALIZER(head) \
- { .tqh_circ = { NULL, &(head).tqh_circ } }
-
-#define QTAILQ_ENTRY(type) \
- union { \
- struct type *tqe_next; /* next element */ \
- QTailQLink tqe_circ; /* link for circular backwards list */ \
- }
-
-#define QTAILQ_INIT(head) do { \
- (head)->tqh_first = NULL; \
- (head)->tqh_circ.tql_prev = &(head)->tqh_circ; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
- (head)->tqh_first->field.tqe_circ.tql_prev = \
- &(elm)->field.tqe_circ; \
- else \
- (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
- (head)->tqh_first = (elm); \
- (elm)->field.tqe_circ.tql_prev = &(head)->tqh_circ; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_INSERT_TAIL(head, elm, field) do { \
- (elm)->field.tqe_next = NULL; \
- (elm)->field.tqe_circ.tql_prev = (head)->tqh_circ.tql_prev; \
- (head)->tqh_circ.tql_prev->tql_next = (elm); \
- (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
- if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
- (elm)->field.tqe_next->field.tqe_circ.tql_prev = \
- &(elm)->field.tqe_circ; \
- else \
- (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
- (listelm)->field.tqe_next = (elm); \
- (elm)->field.tqe_circ.tql_prev = &(listelm)->field.tqe_circ; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_INSERT_BEFORE(listelm, elm, field) do { \
- (elm)->field.tqe_circ.tql_prev = (listelm)->field.tqe_circ.tql_prev; \
- (elm)->field.tqe_next = (listelm); \
- (listelm)->field.tqe_circ.tql_prev->tql_next = (elm); \
- (listelm)->field.tqe_circ.tql_prev = &(elm)->field.tqe_circ; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_REMOVE(head, elm, field) do { \
- if (((elm)->field.tqe_next) != NULL) \
- (elm)->field.tqe_next->field.tqe_circ.tql_prev = \
- (elm)->field.tqe_circ.tql_prev; \
- else \
- (head)->tqh_circ.tql_prev = (elm)->field.tqe_circ.tql_prev; \
- (elm)->field.tqe_circ.tql_prev->tql_next = (elm)->field.tqe_next; \
- (elm)->field.tqe_circ.tql_prev = NULL; \
-} while (/*CONSTCOND*/0)
-
-#define QTAILQ_FOREACH(var, head, field) \
- for ((var) = ((head)->tqh_first); \
- (var); \
- (var) = ((var)->field.tqe_next))
-
-#define QTAILQ_FOREACH_SAFE(var, head, field, next_var) \
- for ((var) = ((head)->tqh_first); \
- (var) && ((next_var) = ((var)->field.tqe_next), 1); \
- (var) = (next_var))
-
-#define QTAILQ_FOREACH_REVERSE(var, head, field) \
- for ((var) = QTAILQ_LAST(head); \
- (var); \
- (var) = QTAILQ_PREV(var, field))
-
-#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, field, prev_var) \
- for ((var) = QTAILQ_LAST(head); \
- (var) && ((prev_var) = QTAILQ_PREV(var, field)); \
- (var) = (prev_var))
-
-/*
- * Tail queue access methods.
- */
-#define QTAILQ_EMPTY(head) ((head)->tqh_first == NULL)
-#define QTAILQ_FIRST(head) ((head)->tqh_first)
-#define QTAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
-#define QTAILQ_IN_USE(elm, field) ((elm)->field.tqe_circ.tql_prev != NULL)
-
-#define QTAILQ_LINK_PREV(link) \
- ((link).tql_prev->tql_prev->tql_next)
-#define QTAILQ_LAST(head) \
- ((typeof((head)->tqh_first)) QTAILQ_LINK_PREV((head)->tqh_circ))
-#define QTAILQ_PREV(elm, field) \
- ((typeof((elm)->field.tqe_next)) QTAILQ_LINK_PREV((elm)->field.tqe_circ))
-
-#define field_at_offset(base, offset, type) \
- ((type *) (((char *) (base)) + (offset)))
-
-/*
- * Raw access of elements of a tail queue head. Offsets are all zero
- * because it's a union.
- */
-#define QTAILQ_RAW_FIRST(head) \
- field_at_offset(head, 0, void *)
-#define QTAILQ_RAW_TQH_CIRC(head) \
- field_at_offset(head, 0, QTailQLink)
-
-/*
- * Raw access of elements of a tail entry
- */
-#define QTAILQ_RAW_NEXT(elm, entry) \
- field_at_offset(elm, entry, void *)
-#define QTAILQ_RAW_TQE_CIRC(elm, entry) \
- field_at_offset(elm, entry, QTailQLink)
-/*
- * Tail queue traversal using pointer arithmetic.
- */
-#define QTAILQ_RAW_FOREACH(elm, head, entry) \
- for ((elm) = *QTAILQ_RAW_FIRST(head); \
- (elm); \
- (elm) = *QTAILQ_RAW_NEXT(elm, entry))
-/*
- * Tail queue insertion using pointer arithmetic.
- */
-#define QTAILQ_RAW_INSERT_TAIL(head, elm, entry) do { \
- *QTAILQ_RAW_NEXT(elm, entry) = NULL; \
- QTAILQ_RAW_TQE_CIRC(elm, entry)->tql_prev = QTAILQ_RAW_TQH_CIRC(head)->tql_prev; \
- QTAILQ_RAW_TQH_CIRC(head)->tql_prev->tql_next = (elm); \
- QTAILQ_RAW_TQH_CIRC(head)->tql_prev = QTAILQ_RAW_TQE_CIRC(elm, entry); \
-} while (/*CONSTCOND*/0)
-
-#endif /* QTAILQ_H */
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-static void sbappendsb(struct sbuf *sb, struct mbuf *m);
-
-void
-sbfree(struct sbuf *sb)
-{
- free(sb->sb_data);
-}
-
-bool
-sbdrop(struct sbuf *sb, int num)
-{
- int limit = sb->sb_datalen / 2;
-
- /*
- * We can only drop how much we have
- * This should never succeed
- */
- if(num > sb->sb_cc)
- num = sb->sb_cc;
- sb->sb_cc -= num;
- sb->sb_rptr += num;
- if(sb->sb_rptr >= sb->sb_data + sb->sb_datalen)
- sb->sb_rptr -= sb->sb_datalen;
-
- if (sb->sb_cc < limit && sb->sb_cc + num >= limit) {
- return true;
- }
-
- return false;
-}
-
-void
-sbreserve(struct sbuf *sb, int size)
-{
- if (sb->sb_data) {
- /* Already alloced, realloc if necessary */
- if (sb->sb_datalen != size) {
- sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)realloc(sb->sb_data, size);
- sb->sb_cc = 0;
- if (sb->sb_wptr)
- sb->sb_datalen = size;
- else
- sb->sb_datalen = 0;
- }
- } else {
- sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)malloc(size);
- sb->sb_cc = 0;
- if (sb->sb_wptr)
- sb->sb_datalen = size;
- else
- sb->sb_datalen = 0;
- }
-}
-
-/*
- * Try and write() to the socket, whatever doesn't get written
- * append to the buffer... for a host with a fast net connection,
- * this prevents an unnecessary copy of the data
- * (the socket is non-blocking, so we won't hang)
- */
-void
-sbappend(struct socket *so, struct mbuf *m)
-{
- int ret = 0;
-
- DEBUG_CALL("sbappend");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("m->m_len = %d", m->m_len);
-
- /* Shouldn't happen, but... e.g. foreign host closes connection */
- if (m->m_len <= 0) {
- m_free(m);
- return;
- }
-
- /*
- * If there is urgent data, call sosendoob
- * if not all was sent, sowrite will take care of the rest
- * (The rest of this function is just an optimisation)
- */
- if (so->so_urgc) {
- sbappendsb(&so->so_rcv, m);
- m_free(m);
- (void)sosendoob(so);
- return;
- }
-
- /*
- * We only write if there's nothing in the buffer,
- * ottherwise it'll arrive out of order, and hence corrupt
- */
- if (!so->so_rcv.sb_cc)
- ret = slirp_send(so, m->m_data, m->m_len, 0);
-
- if (ret <= 0) {
- /*
- * Nothing was written
- * It's possible that the socket has closed, but
- * we don't need to check because if it has closed,
- * it will be detected in the normal way by soread()
- */
- sbappendsb(&so->so_rcv, m);
- } else if (ret != m->m_len) {
- /*
- * Something was written, but not everything..
- * sbappendsb the rest
- */
- m->m_len -= ret;
- m->m_data += ret;
- sbappendsb(&so->so_rcv, m);
- } /* else */
- /* Whatever happened, we free the mbuf */
- m_free(m);
-}
-
-/*
- * Copy the data from m into sb
- * The caller is responsible to make sure there's enough room
- */
-static void
-sbappendsb(struct sbuf *sb, struct mbuf *m)
-{
- int len, n, nn;
-
- len = m->m_len;
-
- if (sb->sb_wptr < sb->sb_rptr) {
- n = sb->sb_rptr - sb->sb_wptr;
- if (n > len) n = len;
- memcpy(sb->sb_wptr, m->m_data, n);
- } else {
- /* Do the right edge first */
- n = sb->sb_data + sb->sb_datalen - sb->sb_wptr;
- if (n > len) n = len;
- memcpy(sb->sb_wptr, m->m_data, n);
- len -= n;
- if (len) {
- /* Now the left edge */
- nn = sb->sb_rptr - sb->sb_data;
- if (nn > len) nn = len;
- memcpy(sb->sb_data,m->m_data+n,nn);
- n += nn;
- }
- }
-
- sb->sb_cc += n;
- sb->sb_wptr += n;
- if (sb->sb_wptr >= sb->sb_data + sb->sb_datalen)
- sb->sb_wptr -= sb->sb_datalen;
-}
-
-/*
- * Copy data from sbuf to a normal, straight buffer
- * Don't update the sbuf rptr, this will be
- * done in sbdrop when the data is acked
- */
-void
-sbcopy(struct sbuf *sb, int off, int len, char *to)
-{
- char *from;
-
- from = sb->sb_rptr + off;
- if (from >= sb->sb_data + sb->sb_datalen)
- from -= sb->sb_datalen;
-
- if (from < sb->sb_wptr) {
- if (len > sb->sb_cc) len = sb->sb_cc;
- memcpy(to,from,len);
- } else {
- /* re-use off */
- off = (sb->sb_data + sb->sb_datalen) - from;
- if (off > len) off = len;
- memcpy(to,from,off);
- len -= off;
- if (len)
- memcpy(to+off,sb->sb_data,len);
- }
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef SBUF_H
-#define SBUF_H
-
-#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
-
-struct sbuf {
- uint32_t sb_cc; /* actual chars in buffer */
- uint32_t sb_datalen; /* Length of data */
- char *sb_wptr; /* write pointer. points to where the next
- * bytes should be written in the sbuf */
- char *sb_rptr; /* read pointer. points to where the next
- * byte should be read from the sbuf */
- char *sb_data; /* Actual data */
-};
-
-void sbfree(struct sbuf *);
-bool sbdrop(struct sbuf *, int);
-void sbreserve(struct sbuf *, int);
-void sbappend(struct socket *, struct mbuf *);
-void sbcopy(struct sbuf *, int, int, char *);
-
-#endif
+++ /dev/null
-/*
- * libslirp glue
- *
- * Copyright (c) 2004-2008 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "slirp.h"
-
-#ifdef WITH_QEMU
-#include "state.h"
-#endif
-
-#ifndef _WIN32
-#include <net/if.h>
-#endif
-
-int slirp_debug;
-
-/* Define to 1 if you want KEEPALIVE timers */
-bool slirp_do_keepalive;
-
-/* host loopback address */
-struct in_addr loopback_addr;
-/* host loopback network mask */
-unsigned long loopback_mask;
-
-/* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */
-static const uint8_t special_ethaddr[ETH_ALEN] = {
- 0x52, 0x55, 0x00, 0x00, 0x00, 0x00
-};
-
-unsigned curtime;
-
-static struct in_addr dns_addr;
-#ifndef _WIN32
-static struct in6_addr dns6_addr;
-#endif
-static unsigned dns_addr_time;
-#ifndef _WIN32
-static unsigned dns6_addr_time;
-#endif
-
-#define TIMEOUT_FAST 2 /* milliseconds */
-#define TIMEOUT_SLOW 499 /* milliseconds */
-/* for the aging of certain requests like DNS */
-#define TIMEOUT_DEFAULT 1000 /* milliseconds */
-
-#ifdef _WIN32
-
-int get_dns_addr(struct in_addr *pdns_addr)
-{
- FIXED_INFO *FixedInfo=NULL;
- ULONG BufLen;
- DWORD ret;
- IP_ADDR_STRING *pIPAddr;
- struct in_addr tmp_addr;
-
- if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < TIMEOUT_DEFAULT) {
- *pdns_addr = dns_addr;
- return 0;
- }
-
- FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO));
- BufLen = sizeof(FIXED_INFO);
-
- if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) {
- if (FixedInfo) {
- GlobalFree(FixedInfo);
- FixedInfo = NULL;
- }
- FixedInfo = GlobalAlloc(GPTR, BufLen);
- }
-
- if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) {
- printf("GetNetworkParams failed. ret = %08x\n", (unsigned)ret );
- if (FixedInfo) {
- GlobalFree(FixedInfo);
- FixedInfo = NULL;
- }
- return -1;
- }
-
- pIPAddr = &(FixedInfo->DnsServerList);
- inet_aton(pIPAddr->IpAddress.String, &tmp_addr);
- *pdns_addr = tmp_addr;
- dns_addr = tmp_addr;
- dns_addr_time = curtime;
- if (FixedInfo) {
- GlobalFree(FixedInfo);
- FixedInfo = NULL;
- }
- return 0;
-}
-
-int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
-{
- return -1;
-}
-
-static void winsock_cleanup(void)
-{
- WSACleanup();
-}
-
-#else
-
-static int get_dns_addr_cached(void *pdns_addr, void *cached_addr,
- socklen_t addrlen,
- struct stat *cached_stat, unsigned *cached_time)
-{
- struct stat old_stat;
- if (curtime - *cached_time < TIMEOUT_DEFAULT) {
- memcpy(pdns_addr, cached_addr, addrlen);
- return 0;
- }
- old_stat = *cached_stat;
- if (stat("/etc/resolv.conf", cached_stat) != 0) {
- return -1;
- }
- if (cached_stat->st_dev == old_stat.st_dev
- && cached_stat->st_ino == old_stat.st_ino
- && cached_stat->st_size == old_stat.st_size
- && cached_stat->st_mtime == old_stat.st_mtime) {
- memcpy(pdns_addr, cached_addr, addrlen);
- return 0;
- }
- return 1;
-}
-
-static int get_dns_addr_resolv_conf(int af, void *pdns_addr, void *cached_addr,
- socklen_t addrlen, uint32_t *scope_id,
- unsigned *cached_time)
-{
- char buff[512];
- char buff2[257];
- FILE *f;
- int found = 0;
- void *tmp_addr = alloca(addrlen);
- unsigned if_index;
-
- f = fopen("/etc/resolv.conf", "r");
- if (!f)
- return -1;
-
- DEBUG_MISC("IP address of your DNS(s):");
- while (fgets(buff, 512, f) != NULL) {
- if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) {
- char *c = strchr(buff2, '%');
- if (c) {
- if_index = if_nametoindex(c + 1);
- *c = '\0';
- } else {
- if_index = 0;
- }
-
- if (!inet_pton(af, buff2, tmp_addr)) {
- continue;
- }
- /* If it's the first one, set it to dns_addr */
- if (!found) {
- memcpy(pdns_addr, tmp_addr, addrlen);
- memcpy(cached_addr, tmp_addr, addrlen);
- if (scope_id) {
- *scope_id = if_index;
- }
- *cached_time = curtime;
- }
-
- if (++found > 3) {
- DEBUG_MISC(" (more)");
- break;
- } else if (slirp_debug & DBG_MISC) {
- char s[INET6_ADDRSTRLEN];
- const char *res = inet_ntop(af, tmp_addr, s, sizeof(s));
- if (!res) {
- res = " (string conversion error)";
- }
- DEBUG_MISC(" %s", res);
- }
- }
- }
- fclose(f);
- if (!found)
- return -1;
- return 0;
-}
-
-int get_dns_addr(struct in_addr *pdns_addr)
-{
- static struct stat dns_addr_stat;
-
- if (dns_addr.s_addr != 0) {
- int ret;
- ret = get_dns_addr_cached(pdns_addr, &dns_addr, sizeof(dns_addr),
- &dns_addr_stat, &dns_addr_time);
- if (ret <= 0) {
- return ret;
- }
- }
- return get_dns_addr_resolv_conf(AF_INET, pdns_addr, &dns_addr,
- sizeof(dns_addr), NULL, &dns_addr_time);
-}
-
-int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
-{
- static struct stat dns6_addr_stat;
-
- if (!in6_zero(&dns6_addr)) {
- int ret;
- ret = get_dns_addr_cached(pdns6_addr, &dns6_addr, sizeof(dns6_addr),
- &dns6_addr_stat, &dns6_addr_time);
- if (ret <= 0) {
- return ret;
- }
- }
- return get_dns_addr_resolv_conf(AF_INET6, pdns6_addr, &dns6_addr,
- sizeof(dns6_addr),
- scope_id, &dns6_addr_time);
-}
-
-#endif
-
-static void slirp_init_once(void)
-{
- static int initialized;
- const char *debug;
-#ifdef _WIN32
- WSADATA Data;
-#endif
-
- if (initialized) {
- return;
- }
- initialized = 1;
-
-#ifdef _WIN32
- WSAStartup(MAKEWORD(2,0), &Data);
- atexit(winsock_cleanup);
-#endif
-
- loopback_addr.s_addr = htonl(INADDR_LOOPBACK);
- loopback_mask = htonl(IN_CLASSA_NET);
-
- debug = g_getenv("SLIRP_DEBUG");
- if (debug) {
- const GDebugKey keys[] = {
- { "call", DBG_CALL },
- { "misc", DBG_MISC },
- { "error", DBG_ERROR },
- { "tftp", DBG_TFTP },
- };
- slirp_debug = g_parse_debug_string(debug, keys, G_N_ELEMENTS(keys));
- }
-
-
-}
-
-Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
- struct in_addr vnetmask, struct in_addr vhost,
- bool in6_enabled,
- struct in6_addr vprefix_addr6, uint8_t vprefix_len,
- struct in6_addr vhost6, const char *vhostname,
- const char *tftp_server_name,
- const char *tftp_path, const char *bootfile,
- struct in_addr vdhcp_start, struct in_addr vnameserver,
- struct in6_addr vnameserver6, const char **vdnssearch,
- const char *vdomainname,
- const SlirpCb *callbacks,
- void *opaque)
-{
- Slirp *slirp = g_malloc0(sizeof(Slirp));
-
- slirp_init_once();
-
- slirp->opaque = opaque;
- slirp->cb = callbacks;
- slirp->grand = g_rand_new();
- slirp->restricted = restricted;
-
- slirp->in_enabled = in_enabled;
- slirp->in6_enabled = in6_enabled;
-
- if_init(slirp);
- ip_init(slirp);
- ip6_init(slirp);
-
- /* Initialise mbufs *after* setting the MTU */
- m_init(slirp);
-
- slirp->vnetwork_addr = vnetwork;
- slirp->vnetwork_mask = vnetmask;
- slirp->vhost_addr = vhost;
- slirp->vprefix_addr6 = vprefix_addr6;
- slirp->vprefix_len = vprefix_len;
- slirp->vhost_addr6 = vhost6;
- if (vhostname) {
- slirp_pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname),
- vhostname);
- }
- slirp->tftp_prefix = g_strdup(tftp_path);
- slirp->bootp_filename = g_strdup(bootfile);
- slirp->vdomainname = g_strdup(vdomainname);
- slirp->vdhcp_startaddr = vdhcp_start;
- slirp->vnameserver_addr = vnameserver;
- slirp->vnameserver_addr6 = vnameserver6;
- slirp->tftp_server_name = g_strdup(tftp_server_name);
-
- if (vdnssearch) {
- translate_dnssearch(slirp, vdnssearch);
- }
-
-#ifdef WITH_QEMU
- slirp_state_register(slirp);
-#endif
- return slirp;
-}
-
-void slirp_cleanup(Slirp *slirp)
-{
- struct gfwd_list *e, *next;
-
- for (e = slirp->guestfwd_list; e; e = next) {
- next = e->ex_next;
- g_free(e->ex_exec);
- g_free(e);
- }
-
-#ifdef WITH_QEMU
- slirp_state_unregister(slirp);
-#endif
- ip_cleanup(slirp);
- ip6_cleanup(slirp);
- m_cleanup(slirp);
-
- g_rand_free(slirp->grand);
-
- g_free(slirp->vdnssearch);
- g_free(slirp->tftp_prefix);
- g_free(slirp->bootp_filename);
- g_free(slirp->vdomainname);
- g_free(slirp);
-}
-
-#define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
-#define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
-
-static void slirp_update_timeout(Slirp *slirp, uint32_t *timeout)
-{
- uint32_t t;
-
- if (*timeout <= TIMEOUT_FAST) {
- return;
- }
-
- t = MIN(1000, *timeout);
-
- /* If we have tcp timeout with slirp, then we will fill @timeout with
- * more precise value.
- */
- if (slirp->time_fasttimo) {
- *timeout = TIMEOUT_FAST;
- return;
- }
- if (slirp->do_slowtimo) {
- t = MIN(TIMEOUT_SLOW, t);
- }
- *timeout = t;
-}
-
-void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout,
- SlirpAddPollCb add_poll, void *opaque)
-{
- struct socket *so, *so_next;
-
- /*
- * First, TCP sockets
- */
-
- /*
- * *_slowtimo needs calling if there are IP fragments
- * in the fragment queue, or there are TCP connections active
- */
- slirp->do_slowtimo = ((slirp->tcb.so_next != &slirp->tcb) ||
- (&slirp->ipq.ip_link != slirp->ipq.ip_link.next));
-
- for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so_next) {
- int events = 0;
-
- so_next = so->so_next;
-
- so->pollfds_idx = -1;
-
- /*
- * See if we need a tcp_fasttimo
- */
- if (slirp->time_fasttimo == 0 &&
- so->so_tcpcb->t_flags & TF_DELACK) {
- slirp->time_fasttimo = curtime; /* Flag when want a fasttimo */
- }
-
- /*
- * NOFDREF can include still connecting to local-host,
- * newly socreated() sockets etc. Don't want to select these.
- */
- if (so->so_state & SS_NOFDREF || so->s == -1) {
- continue;
- }
-
- /*
- * Set for reading sockets which are accepting
- */
- if (so->so_state & SS_FACCEPTCONN) {
- so->pollfds_idx = add_poll(so->s,
- SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
- continue;
- }
-
- /*
- * Set for writing sockets which are connecting
- */
- if (so->so_state & SS_ISFCONNECTING) {
- so->pollfds_idx = add_poll(so->s,
- SLIRP_POLL_OUT | SLIRP_POLL_ERR, opaque);
- continue;
- }
-
- /*
- * Set for writing if we are connected, can send more, and
- * we have something to send
- */
- if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) {
- events |= SLIRP_POLL_OUT | SLIRP_POLL_ERR;
- }
-
- /*
- * Set for reading (and urgent data) if we are connected, can
- * receive more, and we have room for it XXX /2 ?
- */
- if (CONN_CANFRCV(so) &&
- (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) {
- events |= SLIRP_POLL_IN | SLIRP_POLL_HUP |
- SLIRP_POLL_ERR | SLIRP_POLL_PRI;
- }
-
- if (events) {
- so->pollfds_idx = add_poll(so->s, events, opaque);
- }
- }
-
- /*
- * UDP sockets
- */
- for (so = slirp->udb.so_next; so != &slirp->udb; so = so_next) {
- so_next = so->so_next;
-
- so->pollfds_idx = -1;
-
- /*
- * See if it's timed out
- */
- if (so->so_expire) {
- if (so->so_expire <= curtime) {
- udp_detach(so);
- continue;
- } else {
- slirp->do_slowtimo = true; /* Let socket expire */
- }
- }
-
- /*
- * When UDP packets are received from over the
- * link, they're sendto()'d straight away, so
- * no need for setting for writing
- * Limit the number of packets queued by this session
- * to 4. Note that even though we try and limit this
- * to 4 packets, the session could have more queued
- * if the packets needed to be fragmented
- * (XXX <= 4 ?)
- */
- if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) {
- so->pollfds_idx = add_poll(so->s,
- SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
- }
- }
-
- /*
- * ICMP sockets
- */
- for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so_next) {
- so_next = so->so_next;
-
- so->pollfds_idx = -1;
-
- /*
- * See if it's timed out
- */
- if (so->so_expire) {
- if (so->so_expire <= curtime) {
- icmp_detach(so);
- continue;
- } else {
- slirp->do_slowtimo = true; /* Let socket expire */
- }
- }
-
- if (so->so_state & SS_ISFCONNECTED) {
- so->pollfds_idx = add_poll(so->s,
- SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
- }
- }
-
- slirp_update_timeout(slirp, timeout);
-}
-
-void slirp_pollfds_poll(Slirp *slirp, int select_error,
- SlirpGetREventsCb get_revents, void *opaque)
-{
- struct socket *so, *so_next;
- int ret;
-
- curtime = slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS;
-
- /*
- * See if anything has timed out
- */
- if (slirp->time_fasttimo &&
- ((curtime - slirp->time_fasttimo) >= TIMEOUT_FAST)) {
- tcp_fasttimo(slirp);
- slirp->time_fasttimo = 0;
- }
- if (slirp->do_slowtimo &&
- ((curtime - slirp->last_slowtimo) >= TIMEOUT_SLOW)) {
- ip_slowtimo(slirp);
- tcp_slowtimo(slirp);
- slirp->last_slowtimo = curtime;
- }
-
- /*
- * Check sockets
- */
- if (!select_error) {
- /*
- * Check TCP sockets
- */
- for (so = slirp->tcb.so_next; so != &slirp->tcb;
- so = so_next) {
- int revents;
-
- so_next = so->so_next;
-
- revents = 0;
- if (so->pollfds_idx != -1) {
- revents = get_revents(so->pollfds_idx, opaque);
- }
-
- if (so->so_state & SS_NOFDREF || so->s == -1) {
- continue;
- }
-
- /*
- * Check for URG data
- * This will soread as well, so no need to
- * test for SLIRP_POLL_IN below if this succeeds
- */
- if (revents & SLIRP_POLL_PRI) {
- ret = sorecvoob(so);
- if (ret < 0) {
- /* Socket error might have resulted in the socket being
- * removed, do not try to do anything more with it. */
- continue;
- }
- }
- /*
- * Check sockets for reading
- */
- else if (revents &
- (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR)) {
- /*
- * Check for incoming connections
- */
- if (so->so_state & SS_FACCEPTCONN) {
- tcp_connect(so);
- continue;
- } /* else */
- ret = soread(so);
-
- /* Output it if we read something */
- if (ret > 0) {
- tcp_output(sototcpcb(so));
- }
- if (ret < 0) {
- /* Socket error might have resulted in the socket being
- * removed, do not try to do anything more with it. */
- continue;
- }
- }
-
- /*
- * Check sockets for writing
- */
- if (!(so->so_state & SS_NOFDREF) &&
- (revents & (SLIRP_POLL_OUT | SLIRP_POLL_ERR))) {
- /*
- * Check for non-blocking, still-connecting sockets
- */
- if (so->so_state & SS_ISFCONNECTING) {
- /* Connected */
- so->so_state &= ~SS_ISFCONNECTING;
-
- ret = send(so->s, (const void *) &ret, 0, 0);
- if (ret < 0) {
- /* XXXXX Must fix, zero bytes is a NOP */
- if (errno == EAGAIN || errno == EWOULDBLOCK ||
- errno == EINPROGRESS || errno == ENOTCONN) {
- continue;
- }
-
- /* else failed */
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF;
- }
- /* else so->so_state &= ~SS_ISFCONNECTING; */
-
- /*
- * Continue tcp_input
- */
- tcp_input((struct mbuf *)NULL, sizeof(struct ip), so,
- so->so_ffamily);
- /* continue; */
- } else {
- ret = sowrite(so);
- if (ret > 0) {
- /* Call tcp_output in case we need to send a window
- * update to the guest, otherwise it will be stuck
- * until it sends a window probe. */
- tcp_output(sototcpcb(so));
- }
- }
- }
- }
-
- /*
- * Now UDP sockets.
- * Incoming packets are sent straight away, they're not buffered.
- * Incoming UDP data isn't buffered either.
- */
- for (so = slirp->udb.so_next; so != &slirp->udb;
- so = so_next) {
- int revents;
-
- so_next = so->so_next;
-
- revents = 0;
- if (so->pollfds_idx != -1) {
- revents = get_revents(so->pollfds_idx, opaque);
- }
-
- if (so->s != -1 &&
- (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) {
- sorecvfrom(so);
- }
- }
-
- /*
- * Check incoming ICMP relies.
- */
- for (so = slirp->icmp.so_next; so != &slirp->icmp;
- so = so_next) {
- int revents;
-
- so_next = so->so_next;
-
- revents = 0;
- if (so->pollfds_idx != -1) {
- revents = get_revents(so->pollfds_idx, opaque);
- }
-
- if (so->s != -1 &&
- (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) {
- icmp_receive(so);
- }
- }
- }
-
- if_start(slirp);
-}
-
-static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
-{
- struct slirp_arphdr *ah = (struct slirp_arphdr *)(pkt + ETH_HLEN);
- uint8_t arp_reply[MAX(ETH_HLEN + sizeof(struct slirp_arphdr), 64)];
- struct ethhdr *reh = (struct ethhdr *)arp_reply;
- struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_reply + ETH_HLEN);
- int ar_op;
- struct gfwd_list *ex_ptr;
-
- if (!slirp->in_enabled) {
- return;
- }
-
- ar_op = ntohs(ah->ar_op);
- switch(ar_op) {
- case ARPOP_REQUEST:
- if (ah->ar_tip == ah->ar_sip) {
- /* Gratuitous ARP */
- arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
- return;
- }
-
- if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- if (ah->ar_tip == slirp->vnameserver_addr.s_addr ||
- ah->ar_tip == slirp->vhost_addr.s_addr)
- goto arp_ok;
- for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
- if (ex_ptr->ex_addr.s_addr == ah->ar_tip)
- goto arp_ok;
- }
- return;
- arp_ok:
- memset(arp_reply, 0, sizeof(arp_reply));
-
- arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
-
- /* ARP request for alias/dns mac address */
- memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN);
- memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
- memcpy(&reh->h_source[2], &ah->ar_tip, 4);
- reh->h_proto = htons(ETH_P_ARP);
-
- rah->ar_hrd = htons(1);
- rah->ar_pro = htons(ETH_P_IP);
- rah->ar_hln = ETH_ALEN;
- rah->ar_pln = 4;
- rah->ar_op = htons(ARPOP_REPLY);
- memcpy(rah->ar_sha, reh->h_source, ETH_ALEN);
- rah->ar_sip = ah->ar_tip;
- memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN);
- rah->ar_tip = ah->ar_sip;
- slirp_send_packet_all(slirp, arp_reply, sizeof(arp_reply));
- }
- break;
- case ARPOP_REPLY:
- arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
- break;
- default:
- break;
- }
-}
-
-void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
-{
- struct mbuf *m;
- int proto;
-
- if (pkt_len < ETH_HLEN)
- return;
-
- proto = (((uint16_t) pkt[12]) << 8) + pkt[13];
- switch(proto) {
- case ETH_P_ARP:
- arp_input(slirp, pkt, pkt_len);
- break;
- case ETH_P_IP:
- case ETH_P_IPV6:
- m = m_get(slirp);
- if (!m)
- return;
- /* Note: we add 2 to align the IP header on 4 bytes,
- * and add the margin for the tcpiphdr overhead */
- if (M_FREEROOM(m) < pkt_len + TCPIPHDR_DELTA + 2) {
- m_inc(m, pkt_len + TCPIPHDR_DELTA + 2);
- }
- m->m_len = pkt_len + TCPIPHDR_DELTA + 2;
- memcpy(m->m_data + TCPIPHDR_DELTA + 2, pkt, pkt_len);
-
- m->m_data += TCPIPHDR_DELTA + 2 + ETH_HLEN;
- m->m_len -= TCPIPHDR_DELTA + 2 + ETH_HLEN;
-
- if (proto == ETH_P_IP) {
- ip_input(m);
- } else if (proto == ETH_P_IPV6) {
- ip6_input(m);
- }
- break;
-
- case ETH_P_NCSI:
- ncsi_input(slirp, pkt, pkt_len);
- break;
-
- default:
- break;
- }
-}
-
-/* Prepare the IPv4 packet to be sent to the ethernet device. Returns 1 if no
- * packet should be sent, 0 if the packet must be re-queued, 2 if the packet
- * is ready to go.
- */
-static int if_encap4(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh,
- uint8_t ethaddr[ETH_ALEN])
-{
- const struct ip *iph = (const struct ip *)ifm->m_data;
-
- if (iph->ip_dst.s_addr == 0) {
- /* 0.0.0.0 can not be a destination address, something went wrong,
- * avoid making it worse */
- return 1;
- }
- if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) {
- uint8_t arp_req[ETH_HLEN + sizeof(struct slirp_arphdr)];
- struct ethhdr *reh = (struct ethhdr *)arp_req;
- struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_req + ETH_HLEN);
-
- if (!ifm->resolution_requested) {
- /* If the client addr is not known, send an ARP request */
- memset(reh->h_dest, 0xff, ETH_ALEN);
- memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
- memcpy(&reh->h_source[2], &slirp->vhost_addr, 4);
- reh->h_proto = htons(ETH_P_ARP);
- rah->ar_hrd = htons(1);
- rah->ar_pro = htons(ETH_P_IP);
- rah->ar_hln = ETH_ALEN;
- rah->ar_pln = 4;
- rah->ar_op = htons(ARPOP_REQUEST);
-
- /* source hw addr */
- memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4);
- memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4);
-
- /* source IP */
- rah->ar_sip = slirp->vhost_addr.s_addr;
-
- /* target hw addr (none) */
- memset(rah->ar_tha, 0, ETH_ALEN);
-
- /* target IP */
- rah->ar_tip = iph->ip_dst.s_addr;
- slirp->client_ipaddr = iph->ip_dst;
- slirp_send_packet_all(slirp, arp_req, sizeof(arp_req));
- ifm->resolution_requested = true;
-
- /* Expire request and drop outgoing packet after 1 second */
- ifm->expiration_date =
- slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL;
- }
- return 0;
- } else {
- memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4);
- /* XXX: not correct */
- memcpy(&eh->h_source[2], &slirp->vhost_addr, 4);
- eh->h_proto = htons(ETH_P_IP);
-
- /* Send this */
- return 2;
- }
-}
-
-/* Prepare the IPv6 packet to be sent to the ethernet device. Returns 1 if no
- * packet should be sent, 0 if the packet must be re-queued, 2 if the packet
- * is ready to go.
- */
-static int if_encap6(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh,
- uint8_t ethaddr[ETH_ALEN])
-{
- const struct ip6 *ip6h = mtod(ifm, const struct ip6 *);
- if (!ndp_table_search(slirp, ip6h->ip_dst, ethaddr)) {
- if (!ifm->resolution_requested) {
- ndp_send_ns(slirp, ip6h->ip_dst);
- ifm->resolution_requested = true;
- ifm->expiration_date = slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL;
- }
- return 0;
- } else {
- eh->h_proto = htons(ETH_P_IPV6);
- in6_compute_ethaddr(ip6h->ip_src, eh->h_source);
-
- /* Send this */
- return 2;
- }
-}
-
-/* Output the IP packet to the ethernet device. Returns 0 if the packet must be
- * re-queued.
- */
-int if_encap(Slirp *slirp, struct mbuf *ifm)
-{
- uint8_t buf[1600];
- struct ethhdr *eh = (struct ethhdr *)buf;
- uint8_t ethaddr[ETH_ALEN];
- const struct ip *iph = (const struct ip *)ifm->m_data;
- int ret;
-
- if (ifm->m_len + ETH_HLEN > sizeof(buf)) {
- return 1;
- }
-
- switch (iph->ip_v) {
- case IPVERSION:
- ret = if_encap4(slirp, ifm, eh, ethaddr);
- if (ret < 2) {
- return ret;
- }
- break;
-
- case IP6VERSION:
- ret = if_encap6(slirp, ifm, eh, ethaddr);
- if (ret < 2) {
- return ret;
- }
- break;
-
- default:
- g_assert_not_reached();
- break;
- }
-
- memcpy(eh->h_dest, ethaddr, ETH_ALEN);
- DEBUG_ARG("src = %02x:%02x:%02x:%02x:%02x:%02x",
- eh->h_source[0], eh->h_source[1], eh->h_source[2],
- eh->h_source[3], eh->h_source[4], eh->h_source[5]);
- DEBUG_ARG("dst = %02x:%02x:%02x:%02x:%02x:%02x",
- eh->h_dest[0], eh->h_dest[1], eh->h_dest[2],
- eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]);
- memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len);
- slirp_send_packet_all(slirp, buf, ifm->m_len + ETH_HLEN);
- return 1;
-}
-
-/* Drop host forwarding rule, return 0 if found. */
-int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
- int host_port)
-{
- struct socket *so;
- struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb);
- struct sockaddr_in addr;
- int port = htons(host_port);
- socklen_t addr_len;
-
- for (so = head->so_next; so != head; so = so->so_next) {
- addr_len = sizeof(addr);
- if ((so->so_state & SS_HOSTFWD) &&
- getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 &&
- addr.sin_addr.s_addr == host_addr.s_addr &&
- addr.sin_port == port) {
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
- sofree(so);
- return 0;
- }
- }
-
- return -1;
-}
-
-int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
- int host_port, struct in_addr guest_addr, int guest_port)
-{
- if (!guest_addr.s_addr) {
- guest_addr = slirp->vdhcp_startaddr;
- }
- if (is_udp) {
- if (!udp_listen(slirp, host_addr.s_addr, htons(host_port),
- guest_addr.s_addr, htons(guest_port), SS_HOSTFWD))
- return -1;
- } else {
- if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port),
- guest_addr.s_addr, htons(guest_port), SS_HOSTFWD))
- return -1;
- }
- return 0;
-}
-
-static bool
-check_guestfwd(Slirp *slirp, struct in_addr *guest_addr, int guest_port)
-{
- struct gfwd_list *tmp_ptr;
-
- if (!guest_addr->s_addr) {
- guest_addr->s_addr = slirp->vnetwork_addr.s_addr |
- (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr);
- }
- if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) !=
- slirp->vnetwork_addr.s_addr ||
- guest_addr->s_addr == slirp->vhost_addr.s_addr ||
- guest_addr->s_addr == slirp->vnameserver_addr.s_addr) {
- return false;
- }
-
- /* check if the port is "bound" */
- for (tmp_ptr = slirp->guestfwd_list; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
- if (guest_port == tmp_ptr->ex_fport &&
- guest_addr->s_addr == tmp_ptr->ex_addr.s_addr)
- return false;
- }
-
- return true;
-}
-
-int slirp_add_exec(Slirp *slirp, const char *cmdline,
- struct in_addr *guest_addr, int guest_port)
-{
- if (!check_guestfwd(slirp, guest_addr, guest_port)) {
- return -1;
- }
-
- add_exec(&slirp->guestfwd_list, cmdline, *guest_addr, htons(guest_port));
- return 0;
-}
-
-int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque,
- struct in_addr *guest_addr, int guest_port)
-{
- if (!check_guestfwd(slirp, guest_addr, guest_port)) {
- return -1;
- }
-
- add_guestfwd(&slirp->guestfwd_list, write_cb, opaque,
- *guest_addr, htons(guest_port));
- return 0;
-}
-
-ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags)
-{
- if (so->s == -1 && so->guestfwd) {
- /* XXX this blocks entire thread. Rewrite to use
- * qemu_chr_fe_write and background I/O callbacks */
- so->guestfwd->write_cb(buf, len, so->guestfwd->opaque);
- return len;
- }
-
- if (so->s == -1) {
- /*
- * This should in theory not happen but it is hard to be
- * sure because some code paths will end up with so->s == -1
- * on a failure but don't dispose of the struct socket.
- * Check specifically, so we don't pass -1 to send().
- */
- errno = EBADF;
- return -1;
- }
-
- return send(so->s, buf, len, flags);
-}
-
-struct socket *
-slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port)
-{
- struct socket *so;
-
- for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
- if (so->so_faddr.s_addr == guest_addr.s_addr &&
- htons(so->so_fport) == guest_port) {
- return so;
- }
- }
- return NULL;
-}
-
-size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
- int guest_port)
-{
- struct iovec iov[2];
- struct socket *so;
-
- so = slirp_find_ctl_socket(slirp, guest_addr, guest_port);
-
- if (!so || so->so_state & SS_NOFDREF) {
- return 0;
- }
-
- if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) {
- return 0;
- }
-
- return sopreprbuf(so, iov, NULL);
-}
-
-void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port,
- const uint8_t *buf, int size)
-{
- int ret;
- struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port);
-
- if (!so)
- return;
-
- ret = soreadbuf(so, (const char *)buf, size);
-
- if (ret > 0)
- tcp_output(sototcpcb(so));
-}
-
-void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len)
-{
- ssize_t ret = slirp->cb->send_packet(buf, len, slirp->opaque);
-
- if (ret < 0) {
- g_critical("Failed to send packet, ret: %ld", (long) ret);
- } else if (ret < len) {
- DEBUG_ERROR("send_packet() didn't send all data: %ld < %lu",
- (long) ret, (unsigned long) len);
- }
-}
+++ /dev/null
-#ifndef SLIRP_H
-#define SLIRP_H
-
-#ifdef _WIN32
-
-/* as defined in sdkddkver.h */
-#ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600 /* Vista */
-#endif
-/* reduces the number of implicitly included headers */
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-
-# include <winsock2.h>
-# include <windows.h>
-# include <ws2tcpip.h>
-# include <sys/timeb.h>
-# include <iphlpapi.h>
-
-#else
-# if !defined(__HAIKU__)
-# define O_BINARY 0
-# endif
-#endif
-
-#ifndef _WIN32
-#include <sys/uio.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#endif
-
-#ifdef __APPLE__
-# include <sys/filio.h>
-#endif
-
-/* Avoid conflicting with the libc insque() and remque(), which
- have different prototypes. */
-#define insque slirp_insque
-#define remque slirp_remque
-#define quehead slirp_quehead
-
-#include "debug.h"
-#include "util.h"
-#include "qtailq.h"
-
-#include "libslirp.h"
-#include "ip.h"
-#include "ip6.h"
-#include "tcp.h"
-#include "tcp_timer.h"
-#include "tcp_var.h"
-#include "tcpip.h"
-#include "udp.h"
-#include "ip_icmp.h"
-#include "ip6_icmp.h"
-#include "mbuf.h"
-#include "sbuf.h"
-#include "socket.h"
-#include "if.h"
-#include "main.h"
-#include "misc.h"
-
-#include "bootp.h"
-#include "tftp.h"
-
-#define ARPOP_REQUEST 1 /* ARP request */
-#define ARPOP_REPLY 2 /* ARP reply */
-
-struct ethhdr {
- unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
- unsigned char h_source[ETH_ALEN]; /* source ether addr */
- unsigned short h_proto; /* packet type ID field */
-};
-
-struct slirp_arphdr {
- unsigned short ar_hrd; /* format of hardware address */
- unsigned short ar_pro; /* format of protocol address */
- unsigned char ar_hln; /* length of hardware address */
- unsigned char ar_pln; /* length of protocol address */
- unsigned short ar_op; /* ARP opcode (command) */
-
- /*
- * Ethernet looks like this : This bit is variable sized however...
- */
- unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
- uint32_t ar_sip; /* sender IP address */
- unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
- uint32_t ar_tip; /* target IP address */
-} SLIRP_PACKED;
-
-#define ARP_TABLE_SIZE 16
-
-typedef struct ArpTable {
- struct slirp_arphdr table[ARP_TABLE_SIZE];
- int next_victim;
-} ArpTable;
-
-void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
-
-bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
- uint8_t out_ethaddr[ETH_ALEN]);
-
-struct ndpentry {
- unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */
- struct in6_addr ip_addr; /* sender IP address */
-} SLIRP_PACKED;
-
-#define NDP_TABLE_SIZE 16
-
-typedef struct NdpTable {
- struct ndpentry table[NDP_TABLE_SIZE];
- int next_victim;
-} NdpTable;
-
-void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
- uint8_t ethaddr[ETH_ALEN]);
-bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
- uint8_t out_ethaddr[ETH_ALEN]);
-
-struct Slirp {
- QTAILQ_ENTRY(Slirp) entry;
- unsigned time_fasttimo;
- unsigned last_slowtimo;
- bool do_slowtimo;
-
- bool in_enabled, in6_enabled;
-
- /* virtual network configuration */
- struct in_addr vnetwork_addr;
- struct in_addr vnetwork_mask;
- struct in_addr vhost_addr;
- struct in6_addr vprefix_addr6;
- uint8_t vprefix_len;
- struct in6_addr vhost_addr6;
- struct in_addr vdhcp_startaddr;
- struct in_addr vnameserver_addr;
- struct in6_addr vnameserver_addr6;
-
- struct in_addr client_ipaddr;
- char client_hostname[33];
-
- int restricted;
- struct gfwd_list *guestfwd_list;
-
- /* mbuf states */
- struct quehead m_freelist;
- struct quehead m_usedlist;
- int mbuf_alloced;
-
- /* if states */
- struct quehead if_fastq; /* fast queue (for interactive data) */
- struct quehead if_batchq; /* queue for non-interactive data */
- bool if_start_busy; /* avoid if_start recursion */
-
- /* ip states */
- struct ipq ipq; /* ip reass. queue */
- uint16_t ip_id; /* ip packet ctr, for ids */
-
- /* bootp/dhcp states */
- BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
- char *bootp_filename;
- size_t vdnssearch_len;
- uint8_t *vdnssearch;
- char *vdomainname;
-
- /* tcp states */
- struct socket tcb;
- struct socket *tcp_last_so;
- tcp_seq tcp_iss; /* tcp initial send seq # */
- uint32_t tcp_now; /* for RFC 1323 timestamps */
-
- /* udp states */
- struct socket udb;
- struct socket *udp_last_so;
-
- /* icmp states */
- struct socket icmp;
- struct socket *icmp_last_so;
-
- /* tftp states */
- char *tftp_prefix;
- struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
- char *tftp_server_name;
-
- ArpTable arp_table;
- NdpTable ndp_table;
-
- GRand *grand;
- void *ra_timer;
-
- const SlirpCb *cb;
- void *opaque;
-};
-
-void if_start(Slirp *);
-
-int get_dns_addr(struct in_addr *pdns_addr);
-int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id);
-
-/* ncsi.c */
-void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
-
-#ifndef _WIN32
-#include <netdb.h>
-#endif
-
-
-extern bool slirp_do_keepalive;
-
-#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
-
-/* dnssearch.c */
-int translate_dnssearch(Slirp *s, const char ** names);
-
-/* cksum.c */
-int cksum(struct mbuf *m, int len);
-int ip6_cksum(struct mbuf *m);
-
-/* if.c */
-void if_init(Slirp *);
-void if_output(struct socket *, struct mbuf *);
-
-/* ip_input.c */
-void ip_init(Slirp *);
-void ip_cleanup(Slirp *);
-void ip_input(struct mbuf *);
-void ip_slowtimo(Slirp *);
-void ip_stripoptions(register struct mbuf *, struct mbuf *);
-
-/* ip_output.c */
-int ip_output(struct socket *, struct mbuf *);
-
-/* ip6_input.c */
-void ip6_init(Slirp *);
-void ip6_cleanup(Slirp *);
-void ip6_input(struct mbuf *);
-
-/* ip6_output */
-int ip6_output(struct socket *, struct mbuf *, int fast);
-
-/* tcp_input.c */
-void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
-int tcp_mss(register struct tcpcb *, unsigned);
-
-/* tcp_output.c */
-int tcp_output(register struct tcpcb *);
-void tcp_setpersist(register struct tcpcb *);
-
-/* tcp_subr.c */
-void tcp_init(Slirp *);
-void tcp_cleanup(Slirp *);
-void tcp_template(struct tcpcb *);
-void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
- register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
-struct tcpcb * tcp_newtcpcb(struct socket *);
-struct tcpcb * tcp_close(register struct tcpcb *);
-void tcp_sockclosed(struct tcpcb *);
-int tcp_fconnect(struct socket *, unsigned short af);
-void tcp_connect(struct socket *);
-int tcp_attach(struct socket *);
-uint8_t tcp_tos(struct socket *);
-int tcp_emu(struct socket *, struct mbuf *);
-int tcp_ctl(struct socket *);
-struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
-
-struct socket *
-slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port);
-
-void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-#ifdef __sun__
-#include <sys/filio.h>
-#endif
-
-static void sofcantrcvmore(struct socket *so);
-static void sofcantsendmore(struct socket *so);
-
-struct socket *solookup(struct socket **last, struct socket *head,
- struct sockaddr_storage *lhost, struct sockaddr_storage *fhost)
-{
- struct socket *so = *last;
-
- /* Optimisation */
- if (so != head && sockaddr_equal(&(so->lhost.ss), lhost)
- && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
- return so;
- }
-
- for (so = head->so_next; so != head; so = so->so_next) {
- if (sockaddr_equal(&(so->lhost.ss), lhost)
- && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
- *last = so;
- return so;
- }
- }
-
- return (struct socket *)NULL;
-}
-
-/*
- * Create a new socket, initialise the fields
- * It is the responsibility of the caller to
- * insque() it into the correct linked-list
- */
-struct socket *
-socreate(Slirp *slirp)
-{
- struct socket *so = g_new(struct socket, 1);
-
- memset(so, 0, sizeof(struct socket));
- so->so_state = SS_NOFDREF;
- so->s = -1;
- so->slirp = slirp;
- so->pollfds_idx = -1;
-
- return so;
-}
-
-/*
- * Remove references to so from the given message queue.
- */
-static void
-soqfree(struct socket *so, struct quehead *qh)
-{
- struct mbuf *ifq;
-
- for (ifq = (struct mbuf *) qh->qh_link;
- (struct quehead *) ifq != qh;
- ifq = ifq->ifq_next) {
- if (ifq->ifq_so == so) {
- struct mbuf *ifm;
- ifq->ifq_so = NULL;
- for (ifm = ifq->ifs_next; ifm != ifq; ifm = ifm->ifs_next) {
- ifm->ifq_so = NULL;
- }
- }
- }
-}
-
-/*
- * remque and free a socket, clobber cache
- */
-void
-sofree(struct socket *so)
-{
- Slirp *slirp = so->slirp;
-
- soqfree(so, &slirp->if_fastq);
- soqfree(so, &slirp->if_batchq);
-
- if (so == slirp->tcp_last_so) {
- slirp->tcp_last_so = &slirp->tcb;
- } else if (so == slirp->udp_last_so) {
- slirp->udp_last_so = &slirp->udb;
- } else if (so == slirp->icmp_last_so) {
- slirp->icmp_last_so = &slirp->icmp;
- }
- m_free(so->so_m);
-
- if(so->so_next && so->so_prev)
- remque(so); /* crashes if so is not in a queue */
-
- if (so->so_tcpcb) {
- free(so->so_tcpcb);
- }
- g_free(so);
-}
-
-size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np)
-{
- int n, lss, total;
- struct sbuf *sb = &so->so_snd;
- int len = sb->sb_datalen - sb->sb_cc;
- int mss = so->so_tcpcb->t_maxseg;
-
- DEBUG_CALL("sopreprbuf");
- DEBUG_ARG("so = %p", so);
-
- if (len <= 0)
- return 0;
-
- iov[0].iov_base = sb->sb_wptr;
- iov[1].iov_base = NULL;
- iov[1].iov_len = 0;
- if (sb->sb_wptr < sb->sb_rptr) {
- iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len)
- iov[0].iov_len = len;
- if (iov[0].iov_len > mss)
- iov[0].iov_len -= iov[0].iov_len%mss;
- n = 1;
- } else {
- iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- len -= iov[0].iov_len;
- if (len) {
- iov[1].iov_base = sb->sb_data;
- iov[1].iov_len = sb->sb_rptr - sb->sb_data;
- if(iov[1].iov_len > len)
- iov[1].iov_len = len;
- total = iov[0].iov_len + iov[1].iov_len;
- if (total > mss) {
- lss = total%mss;
- if (iov[1].iov_len > lss) {
- iov[1].iov_len -= lss;
- n = 2;
- } else {
- lss -= iov[1].iov_len;
- iov[0].iov_len -= lss;
- n = 1;
- }
- } else
- n = 2;
- } else {
- if (iov[0].iov_len > mss)
- iov[0].iov_len -= iov[0].iov_len%mss;
- n = 1;
- }
- }
- if (np)
- *np = n;
-
- return iov[0].iov_len + (n - 1) * iov[1].iov_len;
-}
-
-/*
- * Read from so's socket into sb_snd, updating all relevant sbuf fields
- * NOTE: This will only be called if it is select()ed for reading, so
- * a read() of 0 (or less) means it's disconnected
- */
-int
-soread(struct socket *so)
-{
- int n, nn;
- struct sbuf *sb = &so->so_snd;
- struct iovec iov[2];
-
- DEBUG_CALL("soread");
- DEBUG_ARG("so = %p", so);
-
- /*
- * No need to check if there's enough room to read.
- * soread wouldn't have been called if there weren't
- */
- sopreprbuf(so, iov, &n);
-
- nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0);
- if (nn <= 0) {
- if (nn < 0 && (errno == EINTR || errno == EAGAIN))
- return 0;
- else {
- int err;
- socklen_t elen = sizeof err;
- struct sockaddr_storage addr;
- struct sockaddr *paddr = (struct sockaddr *) &addr;
- socklen_t alen = sizeof addr;
-
- err = errno;
- if (nn == 0) {
- if (getpeername(so->s, paddr, &alen) < 0) {
- err = errno;
- } else {
- getsockopt(so->s, SOL_SOCKET, SO_ERROR,
- &err, &elen);
- }
- }
-
- DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s",
- nn, errno,strerror(errno));
- sofcantrcvmore(so);
-
- if (err == ECONNRESET || err == ECONNREFUSED
- || err == ENOTCONN || err == EPIPE) {
- tcp_drop(sototcpcb(so), err);
- } else {
- tcp_sockclosed(sototcpcb(so));
- }
- return -1;
- }
- }
-
- /*
- * If there was no error, try and read the second time round
- * We read again if n = 2 (ie, there's another part of the buffer)
- * and we read as much as we could in the first read
- * We don't test for <= 0 this time, because there legitimately
- * might not be any more data (since the socket is non-blocking),
- * a close will be detected on next iteration.
- * A return of -1 won't (shouldn't) happen, since it didn't happen above
- */
- if (n == 2 && nn == iov[0].iov_len) {
- int ret;
- ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0);
- if (ret > 0)
- nn += ret;
- }
-
- DEBUG_MISC(" ... read nn = %d bytes", nn);
-
- /* Update fields */
- sb->sb_cc += nn;
- sb->sb_wptr += nn;
- if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_wptr -= sb->sb_datalen;
- return nn;
-}
-
-int soreadbuf(struct socket *so, const char *buf, int size)
-{
- int n, nn, copy = size;
- struct sbuf *sb = &so->so_snd;
- struct iovec iov[2];
-
- DEBUG_CALL("soreadbuf");
- DEBUG_ARG("so = %p", so);
-
- /*
- * No need to check if there's enough room to read.
- * soread wouldn't have been called if there weren't
- */
- if (sopreprbuf(so, iov, &n) < size)
- goto err;
-
- nn = MIN(iov[0].iov_len, copy);
- memcpy(iov[0].iov_base, buf, nn);
-
- copy -= nn;
- buf += nn;
-
- if (copy == 0)
- goto done;
-
- memcpy(iov[1].iov_base, buf, copy);
-
-done:
- /* Update fields */
- sb->sb_cc += size;
- sb->sb_wptr += size;
- if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_wptr -= sb->sb_datalen;
- return size;
-err:
-
- sofcantrcvmore(so);
- tcp_sockclosed(sototcpcb(so));
- g_critical("soreadbuf buffer too small");
- return -1;
-}
-
-/*
- * Get urgent data
- *
- * When the socket is created, we set it SO_OOBINLINE,
- * so when OOB data arrives, we soread() it and everything
- * in the send buffer is sent as urgent data
- */
-int
-sorecvoob(struct socket *so)
-{
- struct tcpcb *tp = sototcpcb(so);
- int ret;
-
- DEBUG_CALL("sorecvoob");
- DEBUG_ARG("so = %p", so);
-
- /*
- * We take a guess at how much urgent data has arrived.
- * In most situations, when urgent data arrives, the next
- * read() should get all the urgent data. This guess will
- * be wrong however if more data arrives just after the
- * urgent data, or the read() doesn't return all the
- * urgent data.
- */
- ret = soread(so);
- if (ret > 0) {
- tp->snd_up = tp->snd_una + so->so_snd.sb_cc;
- tp->t_force = 1;
- tcp_output(tp);
- tp->t_force = 0;
- }
-
- return ret;
-}
-
-/*
- * Send urgent data
- * There's a lot duplicated code here, but...
- */
-int
-sosendoob(struct socket *so)
-{
- struct sbuf *sb = &so->so_rcv;
- char buff[2048]; /* XXX Shouldn't be sending more oob data than this */
-
- int n;
-
- DEBUG_CALL("sosendoob");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
-
- if (so->so_urgc > 2048)
- so->so_urgc = 2048; /* XXXX */
-
- if (sb->sb_rptr < sb->sb_wptr) {
- /* We can send it directly */
- n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
- } else {
- /*
- * Since there's no sendv or sendtov like writev,
- * we must copy all data to a linear buffer then
- * send it all
- */
- uint32_t urgc = so->so_urgc;
- int len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
- if (len > urgc) {
- len = urgc;
- }
- memcpy(buff, sb->sb_rptr, len);
- urgc -= len;
- if (urgc) {
- n = sb->sb_wptr - sb->sb_data;
- if (n > urgc) {
- n = urgc;
- }
- memcpy((buff + len), sb->sb_data, n);
- len += n;
- }
- n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
-#ifdef DEBUG
- if (n != len) {
- DEBUG_ERROR("Didn't send all data urgently XXXXX");
- }
-#endif
- }
-
- if (n < 0) {
- return n;
- }
- so->so_urgc -= n;
- DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left", n, so->so_urgc);
-
- sb->sb_cc -= n;
- sb->sb_rptr += n;
- if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_rptr -= sb->sb_datalen;
-
- return n;
-}
-
-/*
- * Write data from so_rcv to so's socket,
- * updating all sbuf field as necessary
- */
-int
-sowrite(struct socket *so)
-{
- int n,nn;
- struct sbuf *sb = &so->so_rcv;
- int len = sb->sb_cc;
- struct iovec iov[2];
-
- DEBUG_CALL("sowrite");
- DEBUG_ARG("so = %p", so);
-
- if (so->so_urgc) {
- uint32_t expected = so->so_urgc;
- if (sosendoob(so) < expected) {
- /* Treat a short write as a fatal error too,
- * rather than continuing on and sending the urgent
- * data as if it were non-urgent and leaving the
- * so_urgc count wrong.
- */
- goto err_disconnected;
- }
- if (sb->sb_cc == 0)
- return 0;
- }
-
- /*
- * No need to check if there's something to write,
- * sowrite wouldn't have been called otherwise
- */
-
- iov[0].iov_base = sb->sb_rptr;
- iov[1].iov_base = NULL;
- iov[1].iov_len = 0;
- if (sb->sb_rptr < sb->sb_wptr) {
- iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
- /* Should never succeed, but... */
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- n = 1;
- } else {
- iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
- if (iov[0].iov_len > len) iov[0].iov_len = len;
- len -= iov[0].iov_len;
- if (len) {
- iov[1].iov_base = sb->sb_data;
- iov[1].iov_len = sb->sb_wptr - sb->sb_data;
- if (iov[1].iov_len > len) iov[1].iov_len = len;
- n = 2;
- } else
- n = 1;
- }
- /* Check if there's urgent data to send, and if so, send it */
-
- nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0);
- /* This should never happen, but people tell me it does *shrug* */
- if (nn < 0 && (errno == EAGAIN || errno == EINTR))
- return 0;
-
- if (nn <= 0) {
- goto err_disconnected;
- }
-
- if (n == 2 && nn == iov[0].iov_len) {
- int ret;
- ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0);
- if (ret > 0)
- nn += ret;
- }
- DEBUG_MISC(" ... wrote nn = %d bytes", nn);
-
- /* Update sbuf */
- sb->sb_cc -= nn;
- sb->sb_rptr += nn;
- if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
- sb->sb_rptr -= sb->sb_datalen;
-
- /*
- * If in DRAIN mode, and there's no more data, set
- * it CANTSENDMORE
- */
- if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0)
- sofcantsendmore(so);
-
- return nn;
-
-err_disconnected:
- DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d",
- so->so_state, errno);
- sofcantsendmore(so);
- tcp_sockclosed(sototcpcb(so));
- return -1;
-}
-
-/*
- * recvfrom() a UDP socket
- */
-void
-sorecvfrom(struct socket *so)
-{
- struct sockaddr_storage addr;
- struct sockaddr_storage saddr, daddr;
- socklen_t addrlen = sizeof(struct sockaddr_storage);
-
- DEBUG_CALL("sorecvfrom");
- DEBUG_ARG("so = %p", so);
-
- if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */
- char buff[256];
- int len;
-
- len = recvfrom(so->s, buff, 256, 0,
- (struct sockaddr *)&addr, &addrlen);
- /* XXX Check if reply is "correct"? */
-
- if(len == -1 || len == 0) {
- uint8_t code=ICMP_UNREACH_PORT;
-
- if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
- else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
-
- DEBUG_MISC(" udp icmp rx errno = %d-%s",
- errno,strerror(errno));
- icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
- } else {
- icmp_reflect(so->so_m);
- so->so_m = NULL; /* Don't m_free() it again! */
- }
- /* No need for this socket anymore, udp_detach it */
- udp_detach(so);
- } else { /* A "normal" UDP packet */
- struct mbuf *m;
- int len;
-#ifdef _WIN32
- unsigned long n;
-#else
- int n;
-#endif
-
- m = m_get(so->slirp);
- if (!m) {
- return;
- }
- switch (so->so_ffamily) {
- case AF_INET:
- m->m_data += IF_MAXLINKHDR + sizeof(struct udpiphdr);
- break;
- case AF_INET6:
- m->m_data += IF_MAXLINKHDR + sizeof(struct ip6)
- + sizeof(struct udphdr);
- break;
- default:
- g_assert_not_reached();
- break;
- }
-
- /*
- * XXX Shouldn't FIONREAD packets destined for port 53,
- * but I don't know the max packet size for DNS lookups
- */
- len = M_FREEROOM(m);
- /* if (so->so_fport != htons(53)) { */
- ioctlsocket(so->s, FIONREAD, &n);
-
- if (n > len) {
- n = (m->m_data - m->m_dat) + m->m_len + n + 1;
- m_inc(m, n);
- len = M_FREEROOM(m);
- }
- /* } */
-
- m->m_len = recvfrom(so->s, m->m_data, len, 0,
- (struct sockaddr *)&addr, &addrlen);
- DEBUG_MISC(" did recvfrom %d, errno = %d-%s",
- m->m_len, errno,strerror(errno));
- if(m->m_len<0) {
- /* Report error as ICMP */
- switch (so->so_lfamily) {
- uint8_t code;
- case AF_INET:
- code = ICMP_UNREACH_PORT;
-
- if (errno == EHOSTUNREACH) {
- code = ICMP_UNREACH_HOST;
- } else if (errno == ENETUNREACH) {
- code = ICMP_UNREACH_NET;
- }
-
- DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i", code);
- icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
- break;
- case AF_INET6:
- code = ICMP6_UNREACH_PORT;
-
- if (errno == EHOSTUNREACH) {
- code = ICMP6_UNREACH_ADDRESS;
- } else if (errno == ENETUNREACH) {
- code = ICMP6_UNREACH_NO_ROUTE;
- }
-
- DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i", code);
- icmp6_send_error(so->so_m, ICMP6_UNREACH, code);
- break;
- default:
- g_assert_not_reached();
- break;
- }
- m_free(m);
- } else {
- /*
- * Hack: domain name lookup will be used the most for UDP,
- * and since they'll only be used once there's no need
- * for the 4 minute (or whatever) timeout... So we time them
- * out much quicker (10 seconds for now...)
- */
- if (so->so_expire) {
- if (so->so_fport == htons(53))
- so->so_expire = curtime + SO_EXPIREFAST;
- else
- so->so_expire = curtime + SO_EXPIRE;
- }
-
- /*
- * If this packet was destined for CTL_ADDR,
- * make it look like that's where it came from
- */
- saddr = addr;
- sotranslate_in(so, &saddr);
- daddr = so->lhost.ss;
-
- switch (so->so_ffamily) {
- case AF_INET:
- udp_output(so, m, (struct sockaddr_in *) &saddr,
- (struct sockaddr_in *) &daddr,
- so->so_iptos);
- break;
- case AF_INET6:
- udp6_output(so, m, (struct sockaddr_in6 *) &saddr,
- (struct sockaddr_in6 *) &daddr);
- break;
- default:
- g_assert_not_reached();
- break;
- }
- } /* rx error */
- } /* if ping packet */
-}
-
-/*
- * sendto() a socket
- */
-int
-sosendto(struct socket *so, struct mbuf *m)
-{
- int ret;
- struct sockaddr_storage addr;
-
- DEBUG_CALL("sosendto");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
-
- addr = so->fhost.ss;
- DEBUG_CALL(" sendto()ing)");
- sotranslate_out(so, &addr);
-
- /* Don't care what port we get */
- ret = sendto(so->s, m->m_data, m->m_len, 0,
- (struct sockaddr *)&addr, sockaddr_size(&addr));
- if (ret < 0)
- return -1;
-
- /*
- * Kill the socket if there's no reply in 4 minutes,
- * but only if it's an expirable socket
- */
- if (so->so_expire)
- so->so_expire = curtime + SO_EXPIRE;
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
- return 0;
-}
-
-/*
- * Listen for incoming TCP connections
- */
-struct socket *
-tcp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
- unsigned lport, int flags)
-{
- struct sockaddr_in addr;
- struct socket *so;
- int s, opt = 1;
- socklen_t addrlen = sizeof(addr);
- memset(&addr, 0, addrlen);
-
- DEBUG_CALL("tcp_listen");
- DEBUG_ARG("haddr = %s", inet_ntoa((struct in_addr){.s_addr = haddr}));
- DEBUG_ARG("hport = %d", ntohs(hport));
- DEBUG_ARG("laddr = %s", inet_ntoa((struct in_addr){.s_addr = laddr}));
- DEBUG_ARG("lport = %d", ntohs(lport));
- DEBUG_ARG("flags = %x", flags);
-
- so = socreate(slirp);
-
- /* Don't tcp_attach... we don't need so_snd nor so_rcv */
- if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) {
- g_free(so);
- return NULL;
- }
- insque(so, &slirp->tcb);
-
- /*
- * SS_FACCEPTONCE sockets must time out.
- */
- if (flags & SS_FACCEPTONCE)
- so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
-
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= (SS_FACCEPTCONN | flags);
- so->so_lfamily = AF_INET;
- so->so_lport = lport; /* Kept in network format */
- so->so_laddr.s_addr = laddr; /* Ditto */
-
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = haddr;
- addr.sin_port = hport;
-
- if (((s = slirp_socket(AF_INET,SOCK_STREAM,0)) < 0) ||
- (slirp_socket_set_fast_reuse(s) < 0) ||
- (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) ||
- (listen(s,1) < 0)) {
- int tmperrno = errno; /* Don't clobber the real reason we failed */
-
- if (s >= 0) {
- closesocket(s);
- }
- sofree(so);
- /* Restore the real errno */
-#ifdef _WIN32
- WSASetLastError(tmperrno);
-#else
- errno = tmperrno;
-#endif
- return NULL;
- }
- setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
- opt = 1;
- setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(int));
-
- getsockname(s,(struct sockaddr *)&addr,&addrlen);
- so->so_ffamily = AF_INET;
- so->so_fport = addr.sin_port;
- if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
- so->so_faddr = slirp->vhost_addr;
- else
- so->so_faddr = addr.sin_addr;
-
- so->s = s;
- return so;
-}
-
-/*
- * Various session state calls
- * XXX Should be #define's
- * The socket state stuff needs work, these often get call 2 or 3
- * times each when only 1 was needed
- */
-void
-soisfconnecting(struct socket *so)
-{
- so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE|
- SS_FCANTSENDMORE|SS_FWDRAIN);
- so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
-}
-
-void
-soisfconnected(struct socket *so)
-{
- so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF);
- so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
-}
-
-static void
-sofcantrcvmore(struct socket *so)
-{
- if ((so->so_state & SS_NOFDREF) == 0) {
- shutdown(so->s,0);
- }
- so->so_state &= ~(SS_ISFCONNECTING);
- if (so->so_state & SS_FCANTSENDMORE) {
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF; /* Don't select it */
- } else {
- so->so_state |= SS_FCANTRCVMORE;
- }
-}
-
-static void
-sofcantsendmore(struct socket *so)
-{
- if ((so->so_state & SS_NOFDREF) == 0) {
- shutdown(so->s,1); /* send FIN to fhost */
- }
- so->so_state &= ~(SS_ISFCONNECTING);
- if (so->so_state & SS_FCANTRCVMORE) {
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF; /* as above */
- } else {
- so->so_state |= SS_FCANTSENDMORE;
- }
-}
-
-/*
- * Set write drain mode
- * Set CANTSENDMORE once all data has been write()n
- */
-void
-sofwdrain(struct socket *so)
-{
- if (so->so_rcv.sb_cc)
- so->so_state |= SS_FWDRAIN;
- else
- sofcantsendmore(so);
-}
-
-/*
- * Translate addr in host addr when it is a virtual address
- */
-void sotranslate_out(struct socket *so, struct sockaddr_storage *addr)
-{
- Slirp *slirp = so->slirp;
- struct sockaddr_in *sin = (struct sockaddr_in *)addr;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
-
- switch (addr->ss_family) {
- case AF_INET:
- if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- /* It's an alias */
- if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
- if (get_dns_addr(&sin->sin_addr) < 0) {
- sin->sin_addr = loopback_addr;
- }
- } else {
- sin->sin_addr = loopback_addr;
- }
- }
-
- DEBUG_MISC(" addr.sin_port=%d, addr.sin_addr.s_addr=%.16s",
- ntohs(sin->sin_port), inet_ntoa(sin->sin_addr));
- break;
-
- case AF_INET6:
- if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
- slirp->vprefix_len)) {
- if (in6_equal(&so->so_faddr6, &slirp->vnameserver_addr6)) {
- uint32_t scope_id;
- if (get_dns6_addr(&sin6->sin6_addr, &scope_id) >= 0) {
- sin6->sin6_scope_id = scope_id;
- } else {
- sin6->sin6_addr = in6addr_loopback;
- }
- } else {
- sin6->sin6_addr = in6addr_loopback;
- }
- }
- break;
-
- default:
- break;
- }
-}
-
-void sotranslate_in(struct socket *so, struct sockaddr_storage *addr)
-{
- Slirp *slirp = so->slirp;
- struct sockaddr_in *sin = (struct sockaddr_in *)addr;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
-
- switch (addr->ss_family) {
- case AF_INET:
- if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- uint32_t inv_mask = ~slirp->vnetwork_mask.s_addr;
-
- if ((so->so_faddr.s_addr & inv_mask) == inv_mask) {
- sin->sin_addr = slirp->vhost_addr;
- } else if (sin->sin_addr.s_addr == loopback_addr.s_addr ||
- so->so_faddr.s_addr != slirp->vhost_addr.s_addr) {
- sin->sin_addr = so->so_faddr;
- }
- }
- break;
-
- case AF_INET6:
- if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
- slirp->vprefix_len)) {
- if (in6_equal(&sin6->sin6_addr, &in6addr_loopback)
- || !in6_equal(&so->so_faddr6, &slirp->vhost_addr6)) {
- sin6->sin6_addr = so->so_faddr6;
- }
- }
- break;
-
- default:
- break;
- }
-}
-
-/*
- * Translate connections from localhost to the real hostname
- */
-void sotranslate_accept(struct socket *so)
-{
- Slirp *slirp = so->slirp;
-
- switch (so->so_ffamily) {
- case AF_INET:
- if (so->so_faddr.s_addr == INADDR_ANY ||
- (so->so_faddr.s_addr & loopback_mask) ==
- (loopback_addr.s_addr & loopback_mask)) {
- so->so_faddr = slirp->vhost_addr;
- }
- break;
-
- case AF_INET6:
- if (in6_equal(&so->so_faddr6, &in6addr_any) ||
- in6_equal(&so->so_faddr6, &in6addr_loopback)) {
- so->so_faddr6 = slirp->vhost_addr6;
- }
- break;
-
- default:
- break;
- }
-}
-
-void sodrop(struct socket *s, int num)
-{
- if (sbdrop(&s->so_snd, num)) {
- s->slirp->cb->notify(s->slirp->opaque);
- }
-}
+++ /dev/null
-/*
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#ifndef SLIRP_SOCKET_H
-#define SLIRP_SOCKET_H
-
-#include "misc.h"
-
-#define SO_EXPIRE 240000
-#define SO_EXPIREFAST 10000
-
-/*
- * Our socket structure
- */
-
-union slirp_sockaddr {
- struct sockaddr_storage ss;
- struct sockaddr_in sin;
- struct sockaddr_in6 sin6;
-};
-
-struct socket {
- struct socket *so_next,*so_prev; /* For a linked list of sockets */
-
- int s; /* The actual socket */
- struct gfwd_list *guestfwd;
-
- int pollfds_idx; /* GPollFD GArray index */
-
- Slirp *slirp; /* managing slirp instance */
-
- /* XXX union these with not-yet-used sbuf params */
- struct mbuf *so_m; /* Pointer to the original SYN packet,
- * for non-blocking connect()'s, and
- * PING reply's */
- struct tcpiphdr *so_ti; /* Pointer to the original ti within
- * so_mconn, for non-blocking connections */
- uint32_t so_urgc;
- union slirp_sockaddr fhost; /* Foreign host */
-#define so_faddr fhost.sin.sin_addr
-#define so_fport fhost.sin.sin_port
-#define so_faddr6 fhost.sin6.sin6_addr
-#define so_fport6 fhost.sin6.sin6_port
-#define so_ffamily fhost.ss.ss_family
-
- union slirp_sockaddr lhost; /* Local host */
-#define so_laddr lhost.sin.sin_addr
-#define so_lport lhost.sin.sin_port
-#define so_laddr6 lhost.sin6.sin6_addr
-#define so_lport6 lhost.sin6.sin6_port
-#define so_lfamily lhost.ss.ss_family
-
- uint8_t so_iptos; /* Type of service */
- uint8_t so_emu; /* Is the socket emulated? */
-
- uint8_t so_type; /* Type of socket, UDP or TCP */
- int32_t so_state; /* internal state flags SS_*, below */
-
- struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
- unsigned so_expire; /* When the socket will expire */
-
- int so_queued; /* Number of packets queued from this socket */
- int so_nqueued; /* Number of packets queued in a row
- * Used to determine when to "downgrade" a session
- * from fastq to batchq */
-
- struct sbuf so_rcv; /* Receive buffer */
- struct sbuf so_snd; /* Send buffer */
-};
-
-
-/*
- * Socket state bits. (peer means the host on the Internet,
- * local host means the host on the other end of the modem)
- */
-#define SS_NOFDREF 0x001 /* No fd reference */
-
-#define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
-#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
-#define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */
-#define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */
-#define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
-
-#define SS_CTL 0x080
-#define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
-#define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
-
-#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
-#define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
-#define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */
-
-static inline int sockaddr_equal(struct sockaddr_storage *a,
- struct sockaddr_storage *b)
-{
- if (a->ss_family != b->ss_family) {
- return 0;
- }
-
- switch (a->ss_family) {
- case AF_INET:
- {
- struct sockaddr_in *a4 = (struct sockaddr_in *) a;
- struct sockaddr_in *b4 = (struct sockaddr_in *) b;
- return a4->sin_addr.s_addr == b4->sin_addr.s_addr
- && a4->sin_port == b4->sin_port;
- }
- case AF_INET6:
- {
- struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) a;
- struct sockaddr_in6 *b6 = (struct sockaddr_in6 *) b;
- return (in6_equal(&a6->sin6_addr, &b6->sin6_addr)
- && a6->sin6_port == b6->sin6_port);
- }
- default:
- g_assert_not_reached();
- }
-
- return 0;
-}
-
-static inline socklen_t sockaddr_size(struct sockaddr_storage *a)
-{
- switch (a->ss_family) {
- case AF_INET:
- return sizeof(struct sockaddr_in);
- case AF_INET6:
- return sizeof(struct sockaddr_in6);
- default:
- g_assert_not_reached();
- }
-}
-
-struct socket *solookup(struct socket **, struct socket *,
- struct sockaddr_storage *, struct sockaddr_storage *);
-struct socket *socreate(Slirp *);
-void sofree(struct socket *);
-int soread(struct socket *);
-int sorecvoob(struct socket *);
-int sosendoob(struct socket *);
-int sowrite(struct socket *);
-void sorecvfrom(struct socket *);
-int sosendto(struct socket *, struct mbuf *);
-struct socket * tcp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned,
- int);
-void soisfconnecting(register struct socket *);
-void soisfconnected(register struct socket *);
-void sofwdrain(struct socket *);
-struct iovec; /* For win32 */
-size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
-int soreadbuf(struct socket *so, const char *buf, int size);
-
-void sotranslate_out(struct socket *, struct sockaddr_storage *);
-void sotranslate_in(struct socket *, struct sockaddr_storage *);
-void sotranslate_accept(struct socket *);
-void sodrop(struct socket *, int num);
-
-
-#endif /* SLIRP_SOCKET_H */
--- /dev/null
+/*
+ * ARP table
+ *
+ * Copyright (c) 2011 AdaCore
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "slirp.h"
+
+#include <string.h>
+
+void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN])
+{
+ const uint32_t broadcast_addr =
+ ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr;
+ ArpTable *arptbl = &slirp->arp_table;
+ int i;
+
+ DEBUG_CALL("arp_table_add");
+ DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr}));
+ DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
+ ethaddr[0], ethaddr[1], ethaddr[2],
+ ethaddr[3], ethaddr[4], ethaddr[5]);
+
+ if (ip_addr == 0 || ip_addr == 0xffffffff || ip_addr == broadcast_addr) {
+ /* Do not register broadcast addresses */
+ return;
+ }
+
+ /* Search for an entry */
+ for (i = 0; i < ARP_TABLE_SIZE; i++) {
+ if (arptbl->table[i].ar_sip == ip_addr) {
+ /* Update the entry */
+ memcpy(arptbl->table[i].ar_sha, ethaddr, ETH_ALEN);
+ return;
+ }
+ }
+
+ /* No entry found, create a new one */
+ arptbl->table[arptbl->next_victim].ar_sip = ip_addr;
+ memcpy(arptbl->table[arptbl->next_victim].ar_sha, ethaddr, ETH_ALEN);
+ arptbl->next_victim = (arptbl->next_victim + 1) % ARP_TABLE_SIZE;
+}
+
+bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
+ uint8_t out_ethaddr[ETH_ALEN])
+{
+ const uint32_t broadcast_addr =
+ ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr;
+ ArpTable *arptbl = &slirp->arp_table;
+ int i;
+
+ DEBUG_CALL("arp_table_search");
+ DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr}));
+
+ /* If broadcast address */
+ if (ip_addr == 0xffffffff || ip_addr == broadcast_addr) {
+ /* return Ethernet broadcast address */
+ memset(out_ethaddr, 0xff, ETH_ALEN);
+ return 1;
+ }
+
+ for (i = 0; i < ARP_TABLE_SIZE; i++) {
+ if (arptbl->table[i].ar_sip == ip_addr) {
+ memcpy(out_ethaddr, arptbl->table[i].ar_sha, ETH_ALEN);
+ DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
+ out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
+ out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
+ return 1;
+ }
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * QEMU BOOTP/DHCP server
+ *
+ * Copyright (c) 2004 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "slirp.h"
+
+#if defined(_WIN32)
+/* Windows ntohl() returns an u_long value.
+ * Add a type cast to match the format strings. */
+# define ntohl(n) ((uint32_t)ntohl(n))
+#endif
+
+/* XXX: only DHCP is supported */
+
+#define LEASE_TIME (24 * 3600)
+
+static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
+
+#define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__)
+
+static BOOTPClient *get_new_addr(Slirp *slirp, struct in_addr *paddr,
+ const uint8_t *macaddr)
+{
+ BOOTPClient *bc;
+ int i;
+
+ for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
+ bc = &slirp->bootp_clients[i];
+ if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
+ goto found;
+ }
+ return NULL;
+ found:
+ bc = &slirp->bootp_clients[i];
+ bc->allocated = 1;
+ paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
+ return bc;
+}
+
+static BOOTPClient *request_addr(Slirp *slirp, const struct in_addr *paddr,
+ const uint8_t *macaddr)
+{
+ uint32_t req_addr = ntohl(paddr->s_addr);
+ uint32_t dhcp_addr = ntohl(slirp->vdhcp_startaddr.s_addr);
+ BOOTPClient *bc;
+
+ if (req_addr >= dhcp_addr &&
+ req_addr < (dhcp_addr + NB_BOOTP_CLIENTS)) {
+ bc = &slirp->bootp_clients[req_addr - dhcp_addr];
+ if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) {
+ bc->allocated = 1;
+ return bc;
+ }
+ }
+ return NULL;
+}
+
+static BOOTPClient *find_addr(Slirp *slirp, struct in_addr *paddr,
+ const uint8_t *macaddr)
+{
+ BOOTPClient *bc;
+ int i;
+
+ for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
+ if (!memcmp(macaddr, slirp->bootp_clients[i].macaddr, 6))
+ goto found;
+ }
+ return NULL;
+ found:
+ bc = &slirp->bootp_clients[i];
+ bc->allocated = 1;
+ paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
+ return bc;
+}
+
+static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
+ struct in_addr *preq_addr)
+{
+ const uint8_t *p, *p_end;
+ int len, tag;
+
+ *pmsg_type = 0;
+ preq_addr->s_addr = htonl(0L);
+
+ p = bp->bp_vend;
+ p_end = p + DHCP_OPT_LEN;
+ if (memcmp(p, rfc1533_cookie, 4) != 0)
+ return;
+ p += 4;
+ while (p < p_end) {
+ tag = p[0];
+ if (tag == RFC1533_PAD) {
+ p++;
+ } else if (tag == RFC1533_END) {
+ break;
+ } else {
+ p++;
+ if (p >= p_end)
+ break;
+ len = *p++;
+ if (p + len > p_end) {
+ break;
+ }
+ DPRINTF("dhcp: tag=%d len=%d\n", tag, len);
+
+ switch(tag) {
+ case RFC2132_MSG_TYPE:
+ if (len >= 1)
+ *pmsg_type = p[0];
+ break;
+ case RFC2132_REQ_ADDR:
+ if (len >= 4) {
+ memcpy(&(preq_addr->s_addr), p, 4);
+ }
+ break;
+ default:
+ break;
+ }
+ p += len;
+ }
+ }
+ if (*pmsg_type == DHCPREQUEST && preq_addr->s_addr == htonl(0L) &&
+ bp->bp_ciaddr.s_addr) {
+ memcpy(&(preq_addr->s_addr), &bp->bp_ciaddr, 4);
+ }
+}
+
+static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
+{
+ BOOTPClient *bc = NULL;
+ struct mbuf *m;
+ struct bootp_t *rbp;
+ struct sockaddr_in saddr, daddr;
+ struct in_addr preq_addr;
+ int dhcp_msg_type, val;
+ uint8_t *q;
+ uint8_t *end;
+ uint8_t client_ethaddr[ETH_ALEN];
+
+ /* extract exact DHCP msg type */
+ dhcp_decode(bp, &dhcp_msg_type, &preq_addr);
+ DPRINTF("bootp packet op=%d msgtype=%d", bp->bp_op, dhcp_msg_type);
+ if (preq_addr.s_addr != htonl(0L))
+ DPRINTF(" req_addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
+ else {
+ DPRINTF("\n");
+ }
+
+ if (dhcp_msg_type == 0)
+ dhcp_msg_type = DHCPREQUEST; /* Force reply for old BOOTP clients */
+
+ if (dhcp_msg_type != DHCPDISCOVER &&
+ dhcp_msg_type != DHCPREQUEST)
+ return;
+
+ /* Get client's hardware address from bootp request */
+ memcpy(client_ethaddr, bp->bp_hwaddr, ETH_ALEN);
+
+ m = m_get(slirp);
+ if (!m) {
+ return;
+ }
+ m->m_data += IF_MAXLINKHDR;
+ rbp = (struct bootp_t *)m->m_data;
+ m->m_data += sizeof(struct udpiphdr);
+ memset(rbp, 0, sizeof(struct bootp_t));
+
+ if (dhcp_msg_type == DHCPDISCOVER) {
+ if (preq_addr.s_addr != htonl(0L)) {
+ bc = request_addr(slirp, &preq_addr, client_ethaddr);
+ if (bc) {
+ daddr.sin_addr = preq_addr;
+ }
+ }
+ if (!bc) {
+ new_addr:
+ bc = get_new_addr(slirp, &daddr.sin_addr, client_ethaddr);
+ if (!bc) {
+ DPRINTF("no address left\n");
+ return;
+ }
+ }
+ memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
+ } else if (preq_addr.s_addr != htonl(0L)) {
+ bc = request_addr(slirp, &preq_addr, client_ethaddr);
+ if (bc) {
+ daddr.sin_addr = preq_addr;
+ memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
+ } else {
+ /* DHCPNAKs should be sent to broadcast */
+ daddr.sin_addr.s_addr = 0xffffffff;
+ }
+ } else {
+ bc = find_addr(slirp, &daddr.sin_addr, bp->bp_hwaddr);
+ if (!bc) {
+ /* if never assigned, behaves as if it was already
+ assigned (windows fix because it remembers its address) */
+ goto new_addr;
+ }
+ }
+
+ /* Update ARP table for this IP address */
+ arp_table_add(slirp, daddr.sin_addr.s_addr, client_ethaddr);
+
+ saddr.sin_addr = slirp->vhost_addr;
+ saddr.sin_port = htons(BOOTP_SERVER);
+
+ daddr.sin_port = htons(BOOTP_CLIENT);
+
+ rbp->bp_op = BOOTP_REPLY;
+ rbp->bp_xid = bp->bp_xid;
+ rbp->bp_htype = 1;
+ rbp->bp_hlen = 6;
+ memcpy(rbp->bp_hwaddr, bp->bp_hwaddr, ETH_ALEN);
+
+ rbp->bp_yiaddr = daddr.sin_addr; /* Client IP address */
+ rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */
+
+ q = rbp->bp_vend;
+ end = (uint8_t *)&rbp[1];
+ memcpy(q, rfc1533_cookie, 4);
+ q += 4;
+
+ if (bc) {
+ DPRINTF("%s addr=%08" PRIx32 "\n",
+ (dhcp_msg_type == DHCPDISCOVER) ? "offered" : "ack'ed",
+ ntohl(daddr.sin_addr.s_addr));
+
+ if (dhcp_msg_type == DHCPDISCOVER) {
+ *q++ = RFC2132_MSG_TYPE;
+ *q++ = 1;
+ *q++ = DHCPOFFER;
+ } else /* DHCPREQUEST */ {
+ *q++ = RFC2132_MSG_TYPE;
+ *q++ = 1;
+ *q++ = DHCPACK;
+ }
+
+ if (slirp->bootp_filename)
+ snprintf((char *)rbp->bp_file, sizeof(rbp->bp_file), "%s",
+ slirp->bootp_filename);
+
+ *q++ = RFC2132_SRV_ID;
+ *q++ = 4;
+ memcpy(q, &saddr.sin_addr, 4);
+ q += 4;
+
+ *q++ = RFC1533_NETMASK;
+ *q++ = 4;
+ memcpy(q, &slirp->vnetwork_mask, 4);
+ q += 4;
+
+ if (!slirp->restricted) {
+ *q++ = RFC1533_GATEWAY;
+ *q++ = 4;
+ memcpy(q, &saddr.sin_addr, 4);
+ q += 4;
+
+ *q++ = RFC1533_DNS;
+ *q++ = 4;
+ memcpy(q, &slirp->vnameserver_addr, 4);
+ q += 4;
+ }
+
+ *q++ = RFC2132_LEASE_TIME;
+ *q++ = 4;
+ val = htonl(LEASE_TIME);
+ memcpy(q, &val, 4);
+ q += 4;
+
+ if (*slirp->client_hostname) {
+ val = strlen(slirp->client_hostname);
+ if (q + val + 2 >= end) {
+ g_warning("DHCP packet size exceeded, "
+ "omitting host name option.");
+ } else {
+ *q++ = RFC1533_HOSTNAME;
+ *q++ = val;
+ memcpy(q, slirp->client_hostname, val);
+ q += val;
+ }
+ }
+
+ if (slirp->vdomainname) {
+ val = strlen(slirp->vdomainname);
+ if (q + val + 2 >= end) {
+ g_warning("DHCP packet size exceeded, "
+ "omitting domain name option.");
+ } else {
+ *q++ = RFC1533_DOMAINNAME;
+ *q++ = val;
+ memcpy(q, slirp->vdomainname, val);
+ q += val;
+ }
+ }
+
+ if (slirp->tftp_server_name) {
+ val = strlen(slirp->tftp_server_name);
+ if (q + val + 2 >= end) {
+ g_warning("DHCP packet size exceeded, "
+ "omitting tftp-server-name option.");
+ } else {
+ *q++ = RFC2132_TFTP_SERVER_NAME;
+ *q++ = val;
+ memcpy(q, slirp->tftp_server_name, val);
+ q += val;
+ }
+ }
+
+ if (slirp->vdnssearch) {
+ val = slirp->vdnssearch_len;
+ if (q + val >= end) {
+ g_warning("DHCP packet size exceeded, "
+ "omitting domain-search option.");
+ } else {
+ memcpy(q, slirp->vdnssearch, val);
+ q += val;
+ }
+ }
+ } else {
+ static const char nak_msg[] = "requested address not available";
+
+ DPRINTF("nak'ed addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
+
+ *q++ = RFC2132_MSG_TYPE;
+ *q++ = 1;
+ *q++ = DHCPNAK;
+
+ *q++ = RFC2132_MESSAGE;
+ *q++ = sizeof(nak_msg) - 1;
+ memcpy(q, nak_msg, sizeof(nak_msg) - 1);
+ q += sizeof(nak_msg) - 1;
+ }
+ assert(q < end);
+ *q = RFC1533_END;
+
+ daddr.sin_addr.s_addr = 0xffffffffu;
+
+ m->m_len = sizeof(struct bootp_t) -
+ sizeof(struct ip) - sizeof(struct udphdr);
+ udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
+}
+
+void bootp_input(struct mbuf *m)
+{
+ struct bootp_t *bp = mtod(m, struct bootp_t *);
+
+ if (bp->bp_op == BOOTP_REQUEST) {
+ bootp_reply(m->slirp, bp);
+ }
+}
--- /dev/null
+/* bootp/dhcp defines */
+
+#ifndef SLIRP_BOOTP_H
+#define SLIRP_BOOTP_H
+
+#define BOOTP_SERVER 67
+#define BOOTP_CLIENT 68
+
+#define BOOTP_REQUEST 1
+#define BOOTP_REPLY 2
+
+#define RFC1533_COOKIE 99, 130, 83, 99
+#define RFC1533_PAD 0
+#define RFC1533_NETMASK 1
+#define RFC1533_TIMEOFFSET 2
+#define RFC1533_GATEWAY 3
+#define RFC1533_TIMESERVER 4
+#define RFC1533_IEN116NS 5
+#define RFC1533_DNS 6
+#define RFC1533_LOGSERVER 7
+#define RFC1533_COOKIESERVER 8
+#define RFC1533_LPRSERVER 9
+#define RFC1533_IMPRESSSERVER 10
+#define RFC1533_RESOURCESERVER 11
+#define RFC1533_HOSTNAME 12
+#define RFC1533_BOOTFILESIZE 13
+#define RFC1533_MERITDUMPFILE 14
+#define RFC1533_DOMAINNAME 15
+#define RFC1533_SWAPSERVER 16
+#define RFC1533_ROOTPATH 17
+#define RFC1533_EXTENSIONPATH 18
+#define RFC1533_IPFORWARDING 19
+#define RFC1533_IPSOURCEROUTING 20
+#define RFC1533_IPPOLICYFILTER 21
+#define RFC1533_IPMAXREASSEMBLY 22
+#define RFC1533_IPTTL 23
+#define RFC1533_IPMTU 24
+#define RFC1533_IPMTUPLATEAU 25
+#define RFC1533_INTMTU 26
+#define RFC1533_INTLOCALSUBNETS 27
+#define RFC1533_INTBROADCAST 28
+#define RFC1533_INTICMPDISCOVER 29
+#define RFC1533_INTICMPRESPOND 30
+#define RFC1533_INTROUTEDISCOVER 31
+#define RFC1533_INTROUTESOLICIT 32
+#define RFC1533_INTSTATICROUTES 33
+#define RFC1533_LLTRAILERENCAP 34
+#define RFC1533_LLARPCACHETMO 35
+#define RFC1533_LLETHERNETENCAP 36
+#define RFC1533_TCPTTL 37
+#define RFC1533_TCPKEEPALIVETMO 38
+#define RFC1533_TCPKEEPALIVEGB 39
+#define RFC1533_NISDOMAIN 40
+#define RFC1533_NISSERVER 41
+#define RFC1533_NTPSERVER 42
+#define RFC1533_VENDOR 43
+#define RFC1533_NBNS 44
+#define RFC1533_NBDD 45
+#define RFC1533_NBNT 46
+#define RFC1533_NBSCOPE 47
+#define RFC1533_XFS 48
+#define RFC1533_XDM 49
+
+#define RFC2132_REQ_ADDR 50
+#define RFC2132_LEASE_TIME 51
+#define RFC2132_MSG_TYPE 53
+#define RFC2132_SRV_ID 54
+#define RFC2132_PARAM_LIST 55
+#define RFC2132_MESSAGE 56
+#define RFC2132_MAX_SIZE 57
+#define RFC2132_RENEWAL_TIME 58
+#define RFC2132_REBIND_TIME 59
+#define RFC2132_TFTP_SERVER_NAME 66
+
+#define DHCPDISCOVER 1
+#define DHCPOFFER 2
+#define DHCPREQUEST 3
+#define DHCPACK 5
+#define DHCPNAK 6
+
+#define RFC1533_VENDOR_MAJOR 0
+#define RFC1533_VENDOR_MINOR 0
+
+#define RFC1533_VENDOR_MAGIC 128
+#define RFC1533_VENDOR_ADDPARM 129
+#define RFC1533_VENDOR_ETHDEV 130
+#define RFC1533_VENDOR_HOWTO 132
+#define RFC1533_VENDOR_MNUOPTS 160
+#define RFC1533_VENDOR_SELECTION 176
+#define RFC1533_VENDOR_MOTD 184
+#define RFC1533_VENDOR_NUMOFMOTD 8
+#define RFC1533_VENDOR_IMG 192
+#define RFC1533_VENDOR_NUMOFIMG 16
+
+#define RFC1533_END 255
+#define BOOTP_VENDOR_LEN 64
+#define DHCP_OPT_LEN 312
+
+struct bootp_t {
+ struct ip ip;
+ struct udphdr udp;
+ uint8_t bp_op;
+ uint8_t bp_htype;
+ uint8_t bp_hlen;
+ uint8_t bp_hops;
+ uint32_t bp_xid;
+ uint16_t bp_secs;
+ uint16_t unused;
+ struct in_addr bp_ciaddr;
+ struct in_addr bp_yiaddr;
+ struct in_addr bp_siaddr;
+ struct in_addr bp_giaddr;
+ uint8_t bp_hwaddr[16];
+ uint8_t bp_sname[64];
+ uint8_t bp_file[128];
+ uint8_t bp_vend[DHCP_OPT_LEN];
+};
+
+typedef struct {
+ uint16_t allocated;
+ uint8_t macaddr[6];
+} BOOTPClient;
+
+#define NB_BOOTP_CLIENTS 16
+
+void bootp_input(struct mbuf *m);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1988, 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)in_cksum.c 8.1 (Berkeley) 6/10/93
+ * in_cksum.c,v 1.2 1994/08/02 07:48:16 davidg Exp
+ */
+
+#include "slirp.h"
+
+/*
+ * Checksum routine for Internet Protocol family headers (Portable Version).
+ *
+ * This routine is very heavily used in the network
+ * code and should be modified for each CPU to be as fast as possible.
+ *
+ * XXX Since we will never span more than 1 mbuf, we can optimise this
+ */
+
+#define ADDCARRY(x) (x > 65535 ? x -= 65535 : x)
+#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; \
+ (void)ADDCARRY(sum);}
+
+int cksum(struct mbuf *m, int len)
+{
+ register uint16_t *w;
+ register int sum = 0;
+ register int mlen = 0;
+ int byte_swapped = 0;
+
+ union {
+ uint8_t c[2];
+ uint16_t s;
+ } s_util;
+ union {
+ uint16_t s[2];
+ uint32_t l;
+ } l_util;
+
+ if (m->m_len == 0)
+ goto cont;
+ w = mtod(m, uint16_t *);
+
+ mlen = m->m_len;
+
+ if (len < mlen)
+ mlen = len;
+ len -= mlen;
+ /*
+ * Force to even boundary.
+ */
+ if ((1 & (uintptr_t)w) && (mlen > 0)) {
+ REDUCE;
+ sum <<= 8;
+ s_util.c[0] = *(uint8_t *)w;
+ w = (uint16_t *)((int8_t *)w + 1);
+ mlen--;
+ byte_swapped = 1;
+ }
+ /*
+ * Unroll the loop to make overhead from
+ * branches &c small.
+ */
+ while ((mlen -= 32) >= 0) {
+ sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
+ sum += w[4]; sum += w[5]; sum += w[6]; sum += w[7];
+ sum += w[8]; sum += w[9]; sum += w[10]; sum += w[11];
+ sum += w[12]; sum += w[13]; sum += w[14]; sum += w[15];
+ w += 16;
+ }
+ mlen += 32;
+ while ((mlen -= 8) >= 0) {
+ sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3];
+ w += 4;
+ }
+ mlen += 8;
+ if (mlen == 0 && byte_swapped == 0)
+ goto cont;
+ REDUCE;
+ while ((mlen -= 2) >= 0) {
+ sum += *w++;
+ }
+
+ if (byte_swapped) {
+ REDUCE;
+ sum <<= 8;
+ if (mlen == -1) {
+ s_util.c[1] = *(uint8_t *)w;
+ sum += s_util.s;
+ mlen = 0;
+ } else
+
+ mlen = -1;
+ } else if (mlen == -1)
+ s_util.c[0] = *(uint8_t *)w;
+
+cont:
+ if (len) {
+ DEBUG_ERROR("cksum: out of data");
+ DEBUG_ERROR(" len = %d", len);
+ }
+ if (mlen == -1) {
+ /* The last mbuf has odd # of bytes. Follow the
+ standard (the odd byte may be shifted left by 8 bits
+ or not as determined by endian-ness of the machine) */
+ s_util.c[1] = 0;
+ sum += s_util.s;
+ }
+ REDUCE;
+ return (~sum & 0xffff);
+}
+
+int ip6_cksum(struct mbuf *m)
+{
+ /* TODO: Optimize this by being able to pass the ip6_pseudohdr to cksum
+ * separately from the mbuf */
+ struct ip6 save_ip, *ip = mtod(m, struct ip6 *);
+ struct ip6_pseudohdr *ih = mtod(m, struct ip6_pseudohdr *);
+ int sum;
+
+ save_ip = *ip;
+
+ ih->ih_src = save_ip.ip_src;
+ ih->ih_dst = save_ip.ip_dst;
+ ih->ih_pl = htonl((uint32_t)ntohs(save_ip.ip_pl));
+ ih->ih_zero_hi = 0;
+ ih->ih_zero_lo = 0;
+ ih->ih_nh = save_ip.ip_nh;
+
+ sum = cksum(m, ((int)sizeof(struct ip6_pseudohdr))
+ + ntohl(ih->ih_pl));
+
+ *ip = save_ip;
+
+ return sum;
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef DEBUG_H_
+#define DEBUG_H_
+
+#define DBG_CALL (1 << 0)
+#define DBG_MISC (1 << 1)
+#define DBG_ERROR (1 << 2)
+#define DBG_TFTP (1 << 3)
+
+extern int slirp_debug;
+
+#define DEBUG_CALL(fmt, ...) do { \
+ if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \
+ g_debug(fmt "...", ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#define DEBUG_ARG(fmt, ...) do { \
+ if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \
+ g_debug(" " fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#define DEBUG_MISC(fmt, ...) do { \
+ if (G_UNLIKELY(slirp_debug & DBG_MISC)) { \
+ g_debug(fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#define DEBUG_ERROR(fmt, ...) do { \
+ if (G_UNLIKELY(slirp_debug & DBG_ERROR)) { \
+ g_debug(fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#define DEBUG_TFTP(fmt, ...) do { \
+ if (G_UNLIKELY(slirp_debug & DBG_TFTP)) { \
+ g_debug(fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#endif /* DEBUG_H_ */
--- /dev/null
+/*
+ * SLIRP stateless DHCPv6
+ *
+ * We only support stateless DHCPv6, e.g. for network booting.
+ * See RFC 3315, RFC 3736, RFC 3646 and RFC 5970 for details.
+ *
+ * Copyright 2016 Thomas Huth, Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "slirp.h"
+#include "dhcpv6.h"
+
+/* DHCPv6 message types */
+#define MSGTYPE_REPLY 7
+#define MSGTYPE_INFO_REQUEST 11
+
+/* DHCPv6 option types */
+#define OPTION_CLIENTID 1
+#define OPTION_IAADDR 5
+#define OPTION_ORO 6
+#define OPTION_DNS_SERVERS 23
+#define OPTION_BOOTFILE_URL 59
+
+struct requested_infos {
+ uint8_t *client_id;
+ int client_id_len;
+ bool want_dns;
+ bool want_boot_url;
+};
+
+/**
+ * Analyze the info request message sent by the client to see what data it
+ * provided and what it wants to have. The information is gathered in the
+ * "requested_infos" struct. Note that client_id (if provided) points into
+ * the odata region, thus the caller must keep odata valid as long as it
+ * needs to access the requested_infos struct.
+ */
+static int dhcpv6_parse_info_request(Slirp *slirp, uint8_t *odata, int olen,
+ struct requested_infos *ri)
+{
+ int i, req_opt;
+
+ while (olen > 4) {
+ /* Parse one option */
+ int option = odata[0] << 8 | odata[1];
+ int len = odata[2] << 8 | odata[3];
+
+ if (len + 4 > olen) {
+ slirp->cb->guest_error("Guest sent bad DHCPv6 packet!", slirp->opaque);
+ return -E2BIG;
+ }
+
+ switch (option) {
+ case OPTION_IAADDR:
+ /* According to RFC3315, we must discard requests with IA option */
+ return -EINVAL;
+ case OPTION_CLIENTID:
+ if (len > 256) {
+ /* Avoid very long IDs which could cause problems later */
+ return -E2BIG;
+ }
+ ri->client_id = odata + 4;
+ ri->client_id_len = len;
+ break;
+ case OPTION_ORO: /* Option request option */
+ if (len & 1) {
+ return -EINVAL;
+ }
+ /* Check which options the client wants to have */
+ for (i = 0; i < len; i += 2) {
+ req_opt = odata[4 + i] << 8 | odata[4 + i + 1];
+ switch (req_opt) {
+ case OPTION_DNS_SERVERS:
+ ri->want_dns = true;
+ break;
+ case OPTION_BOOTFILE_URL:
+ ri->want_boot_url = true;
+ break;
+ default:
+ DEBUG_MISC("dhcpv6: Unsupported option request %d",
+ req_opt);
+ }
+ }
+ break;
+ default:
+ DEBUG_MISC("dhcpv6 info req: Unsupported option %d, len=%d",
+ option, len);
+ }
+
+ odata += len + 4;
+ olen -= len + 4;
+ }
+
+ return 0;
+}
+
+
+/**
+ * Handle information request messages
+ */
+static void dhcpv6_info_request(Slirp *slirp, struct sockaddr_in6 *srcsas,
+ uint32_t xid, uint8_t *odata, int olen)
+{
+ struct requested_infos ri = { NULL };
+ struct sockaddr_in6 sa6, da6;
+ struct mbuf *m;
+ uint8_t *resp;
+
+ if (dhcpv6_parse_info_request(slirp, odata, olen, &ri) < 0) {
+ return;
+ }
+
+ m = m_get(slirp);
+ if (!m) {
+ return;
+ }
+ memset(m->m_data, 0, m->m_size);
+ m->m_data += IF_MAXLINKHDR;
+ resp = (uint8_t *)m->m_data + sizeof(struct ip6) + sizeof(struct udphdr);
+
+ /* Fill in response */
+ *resp++ = MSGTYPE_REPLY;
+ *resp++ = (uint8_t)(xid >> 16);
+ *resp++ = (uint8_t)(xid >> 8);
+ *resp++ = (uint8_t)xid;
+
+ if (ri.client_id) {
+ *resp++ = OPTION_CLIENTID >> 8; /* option-code high byte */
+ *resp++ = OPTION_CLIENTID; /* option-code low byte */
+ *resp++ = ri.client_id_len >> 8; /* option-len high byte */
+ *resp++ = ri.client_id_len; /* option-len low byte */
+ memcpy(resp, ri.client_id, ri.client_id_len);
+ resp += ri.client_id_len;
+ }
+ if (ri.want_dns) {
+ *resp++ = OPTION_DNS_SERVERS >> 8; /* option-code high byte */
+ *resp++ = OPTION_DNS_SERVERS; /* option-code low byte */
+ *resp++ = 0; /* option-len high byte */
+ *resp++ = 16; /* option-len low byte */
+ memcpy(resp, &slirp->vnameserver_addr6, 16);
+ resp += 16;
+ }
+ if (ri.want_boot_url) {
+ uint8_t *sa = slirp->vhost_addr6.s6_addr;
+ int slen, smaxlen;
+
+ *resp++ = OPTION_BOOTFILE_URL >> 8; /* option-code high byte */
+ *resp++ = OPTION_BOOTFILE_URL; /* option-code low byte */
+ smaxlen = (uint8_t *)m->m_data + IF_MTU - (resp + 2);
+ slen = snprintf((char *)resp + 2, smaxlen,
+ "tftp://[%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
+ "%02x%02x:%02x%02x:%02x%02x:%02x%02x]/%s",
+ sa[0], sa[1], sa[2], sa[3], sa[4], sa[5], sa[6], sa[7],
+ sa[8], sa[9], sa[10], sa[11], sa[12], sa[13], sa[14],
+ sa[15], slirp->bootp_filename);
+ slen = MIN(slen, smaxlen);
+ *resp++ = slen >> 8; /* option-len high byte */
+ *resp++ = slen; /* option-len low byte */
+ resp += slen;
+ }
+
+ sa6.sin6_addr = slirp->vhost_addr6;
+ sa6.sin6_port = DHCPV6_SERVER_PORT;
+ da6.sin6_addr = srcsas->sin6_addr;
+ da6.sin6_port = srcsas->sin6_port;
+ m->m_data += sizeof(struct ip6) + sizeof(struct udphdr);
+ m->m_len = resp - (uint8_t *)m->m_data;
+ udp6_output(NULL, m, &sa6, &da6);
+}
+
+/**
+ * Handle DHCPv6 messages sent by the client
+ */
+void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m)
+{
+ uint8_t *data = (uint8_t *)m->m_data + sizeof(struct udphdr);
+ int data_len = m->m_len - sizeof(struct udphdr);
+ uint32_t xid;
+
+ if (data_len < 4) {
+ return;
+ }
+
+ xid = ntohl(*(uint32_t *)data) & 0xffffff;
+
+ switch (data[0]) {
+ case MSGTYPE_INFO_REQUEST:
+ dhcpv6_info_request(m->slirp, srcsas, xid, &data[4], data_len - 4);
+ break;
+ default:
+ DEBUG_MISC("dhcpv6_input: Unsupported message type 0x%x", data[0]);
+ }
+}
--- /dev/null
+/*
+ * Definitions and prototypes for SLIRP stateless DHCPv6
+ *
+ * Copyright 2016 Thomas Huth, Red Hat Inc.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2
+ * or later. See the COPYING file in the top-level directory.
+ */
+#ifndef SLIRP_DHCPV6_H
+#define SLIRP_DHCPV6_H
+
+#define DHCPV6_SERVER_PORT 547
+
+#define ALLDHCP_MULTICAST { .s6_addr = \
+ { 0xff, 0x02, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x01, 0x00, 0x02 } }
+
+#define in6_dhcp_multicast(a)\
+ in6_equal(a, &(struct in6_addr)ALLDHCP_MULTICAST)
+
+void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m);
+
+#endif
--- /dev/null
+/*
+ * Domain search option for DHCP (RFC 3397)
+ *
+ * Copyright (c) 2012 Klaus Stengel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "slirp.h"
+
+static const uint8_t RFC3397_OPT_DOMAIN_SEARCH = 119;
+static const uint8_t MAX_OPT_LEN = 255;
+static const uint8_t OPT_HEADER_LEN = 2;
+static const uint8_t REFERENCE_LEN = 2;
+
+struct compact_domain;
+
+typedef struct compact_domain {
+ struct compact_domain *self;
+ struct compact_domain *refdom;
+ uint8_t *labels;
+ size_t len;
+ size_t common_octets;
+} CompactDomain;
+
+static size_t
+domain_suffix_diffoff(const CompactDomain *a, const CompactDomain *b)
+{
+ size_t la = a->len, lb = b->len;
+ uint8_t *da = a->labels + la, *db = b->labels + lb;
+ size_t i, lm = (la < lb) ? la : lb;
+
+ for (i = 0; i < lm; i++) {
+ da--; db--;
+ if (*da != *db) {
+ break;
+ }
+ }
+ return i;
+}
+
+static int domain_suffix_ord(const void *cva, const void *cvb)
+{
+ const CompactDomain *a = cva, *b = cvb;
+ size_t la = a->len, lb = b->len;
+ size_t doff = domain_suffix_diffoff(a, b);
+ uint8_t ca = a->labels[la - doff];
+ uint8_t cb = b->labels[lb - doff];
+
+ if (ca < cb) {
+ return -1;
+ }
+ if (ca > cb) {
+ return 1;
+ }
+ if (la < lb) {
+ return -1;
+ }
+ if (la > lb) {
+ return 1;
+ }
+ return 0;
+}
+
+static size_t domain_common_label(CompactDomain *a, CompactDomain *b)
+{
+ size_t res, doff = domain_suffix_diffoff(a, b);
+ uint8_t *first_eq_pos = a->labels + (a->len - doff);
+ uint8_t *label = a->labels;
+
+ while (*label && label < first_eq_pos) {
+ label += *label + 1;
+ }
+ res = a->len - (label - a->labels);
+ /* only report if it can help to reduce the packet size */
+ return (res > REFERENCE_LEN) ? res : 0;
+}
+
+static void domain_fixup_order(CompactDomain *cd, size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ CompactDomain *cur = cd + i, *next = cd[i].self;
+
+ while (!cur->common_octets) {
+ CompactDomain *tmp = next->self; /* backup target value */
+
+ next->self = cur;
+ cur->common_octets++;
+
+ cur = next;
+ next = tmp;
+ }
+ }
+}
+
+static void domain_mklabels(CompactDomain *cd, const char *input)
+{
+ uint8_t *len_marker = cd->labels;
+ uint8_t *output = len_marker; /* pre-incremented */
+ const char *in = input;
+ char cur_chr;
+ size_t len = 0;
+
+ if (cd->len == 0) {
+ goto fail;
+ }
+ cd->len++;
+
+ do {
+ cur_chr = *in++;
+ if (cur_chr == '.' || cur_chr == '\0') {
+ len = output - len_marker;
+ if ((len == 0 && cur_chr == '.') || len >= 64) {
+ goto fail;
+ }
+ *len_marker = len;
+
+ output++;
+ len_marker = output;
+ } else {
+ output++;
+ *output = cur_chr;
+ }
+ } while (cur_chr != '\0');
+
+ /* ensure proper zero-termination */
+ if (len != 0) {
+ *len_marker = 0;
+ cd->len++;
+ }
+ return;
+
+fail:
+ g_warning("failed to parse domain name '%s'\n", input);
+ cd->len = 0;
+}
+
+static void
+domain_mkxrefs(CompactDomain *doms, CompactDomain *last, size_t depth)
+{
+ CompactDomain *i = doms, *target = doms;
+
+ do {
+ if (i->labels < target->labels) {
+ target = i;
+ }
+ } while (i++ != last);
+
+ for (i = doms; i != last; i++) {
+ CompactDomain *group_last;
+ size_t next_depth;
+
+ if (i->common_octets == depth) {
+ continue;
+ }
+
+ next_depth = -1;
+ for (group_last = i; group_last != last; group_last++) {
+ size_t co = group_last->common_octets;
+ if (co <= depth) {
+ break;
+ }
+ if (co < next_depth) {
+ next_depth = co;
+ }
+ }
+ domain_mkxrefs(i, group_last, next_depth);
+
+ i = group_last;
+ if (i == last) {
+ break;
+ }
+ }
+
+ if (depth == 0) {
+ return;
+ }
+
+ i = doms;
+ do {
+ if (i != target && i->refdom == NULL) {
+ i->refdom = target;
+ i->common_octets = depth;
+ }
+ } while (i++ != last);
+}
+
+static size_t domain_compactify(CompactDomain *domains, size_t n)
+{
+ uint8_t *start = domains->self->labels, *outptr = start;
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ CompactDomain *cd = domains[i].self;
+ CompactDomain *rd = cd->refdom;
+
+ if (rd != NULL) {
+ size_t moff = (rd->labels - start)
+ + (rd->len - cd->common_octets);
+ if (moff < 0x3FFFu) {
+ cd->len -= cd->common_octets - 2;
+ cd->labels[cd->len - 1] = moff & 0xFFu;
+ cd->labels[cd->len - 2] = 0xC0u | (moff >> 8);
+ }
+ }
+
+ if (cd->labels != outptr) {
+ memmove(outptr, cd->labels, cd->len);
+ cd->labels = outptr;
+ }
+ outptr += cd->len;
+ }
+ return outptr - start;
+}
+
+int translate_dnssearch(Slirp *s, const char **names)
+{
+ size_t blocks, bsrc_start, bsrc_end, bdst_start;
+ size_t i, num_domains, memreq = 0;
+ uint8_t *result = NULL, *outptr;
+ CompactDomain *domains = NULL;
+ const char **nameptr = names;
+
+ while (*nameptr != NULL) {
+ nameptr++;
+ }
+
+ num_domains = nameptr - names;
+ if (num_domains == 0) {
+ return -2;
+ }
+
+ domains = g_malloc(num_domains * sizeof(*domains));
+
+ for (i = 0; i < num_domains; i++) {
+ size_t nlen = strlen(names[i]);
+ memreq += nlen + 2; /* 1 zero octet + 1 label length octet */
+ domains[i].self = domains + i;
+ domains[i].len = nlen;
+ domains[i].common_octets = 0;
+ domains[i].refdom = NULL;
+ }
+
+ /* reserve extra 2 header bytes for each 255 bytes of output */
+ memreq += DIV_ROUND_UP(memreq, MAX_OPT_LEN) * OPT_HEADER_LEN;
+ result = g_malloc(memreq * sizeof(*result));
+
+ outptr = result;
+ for (i = 0; i < num_domains; i++) {
+ domains[i].labels = outptr;
+ domain_mklabels(domains + i, names[i]);
+ outptr += domains[i].len;
+ }
+
+ if (outptr == result) {
+ g_free(domains);
+ g_free(result);
+ return -1;
+ }
+
+ qsort(domains, num_domains, sizeof(*domains), domain_suffix_ord);
+ domain_fixup_order(domains, num_domains);
+
+ for (i = 1; i < num_domains; i++) {
+ size_t cl = domain_common_label(domains + i - 1, domains + i);
+ domains[i - 1].common_octets = cl;
+ }
+
+ domain_mkxrefs(domains, domains + num_domains - 1, 0);
+ memreq = domain_compactify(domains, num_domains);
+
+ blocks = DIV_ROUND_UP(memreq, MAX_OPT_LEN);
+ bsrc_end = memreq;
+ bsrc_start = (blocks - 1) * MAX_OPT_LEN;
+ bdst_start = bsrc_start + blocks * OPT_HEADER_LEN;
+ memreq += blocks * OPT_HEADER_LEN;
+
+ while (blocks--) {
+ size_t len = bsrc_end - bsrc_start;
+ memmove(result + bdst_start, result + bsrc_start, len);
+ result[bdst_start - 2] = RFC3397_OPT_DOMAIN_SEARCH;
+ result[bdst_start - 1] = len;
+ bsrc_end = bsrc_start;
+ bsrc_start -= MAX_OPT_LEN;
+ bdst_start -= MAX_OPT_LEN + OPT_HEADER_LEN;
+ }
+
+ g_free(domains);
+ s->vdnssearch = result;
+ s->vdnssearch_len = memreq;
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+static void
+ifs_insque(struct mbuf *ifm, struct mbuf *ifmhead)
+{
+ ifm->ifs_next = ifmhead->ifs_next;
+ ifmhead->ifs_next = ifm;
+ ifm->ifs_prev = ifmhead;
+ ifm->ifs_next->ifs_prev = ifm;
+}
+
+static void
+ifs_remque(struct mbuf *ifm)
+{
+ ifm->ifs_prev->ifs_next = ifm->ifs_next;
+ ifm->ifs_next->ifs_prev = ifm->ifs_prev;
+}
+
+void
+if_init(Slirp *slirp)
+{
+ slirp->if_fastq.qh_link = slirp->if_fastq.qh_rlink = &slirp->if_fastq;
+ slirp->if_batchq.qh_link = slirp->if_batchq.qh_rlink = &slirp->if_batchq;
+}
+
+/*
+ * if_output: Queue packet into an output queue.
+ * There are 2 output queue's, if_fastq and if_batchq.
+ * Each output queue is a doubly linked list of double linked lists
+ * of mbufs, each list belonging to one "session" (socket). This
+ * way, we can output packets fairly by sending one packet from each
+ * session, instead of all the packets from one session, then all packets
+ * from the next session, etc. Packets on the if_fastq get absolute
+ * priority, but if one session hogs the link, it gets "downgraded"
+ * to the batchq until it runs out of packets, then it'll return
+ * to the fastq (eg. if the user does an ls -alR in a telnet session,
+ * it'll temporarily get downgraded to the batchq)
+ */
+void
+if_output(struct socket *so, struct mbuf *ifm)
+{
+ Slirp *slirp = ifm->slirp;
+ struct mbuf *ifq;
+ int on_fastq = 1;
+
+ DEBUG_CALL("if_output");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("ifm = %p", ifm);
+
+ /*
+ * First remove the mbuf from m_usedlist,
+ * since we're gonna use m_next and m_prev ourselves
+ * XXX Shouldn't need this, gotta change dtom() etc.
+ */
+ if (ifm->m_flags & M_USEDLIST) {
+ remque(ifm);
+ ifm->m_flags &= ~M_USEDLIST;
+ }
+
+ /*
+ * See if there's already a batchq list for this session.
+ * This can include an interactive session, which should go on fastq,
+ * but gets too greedy... hence it'll be downgraded from fastq to batchq.
+ * We mustn't put this packet back on the fastq (or we'll send it out of order)
+ * XXX add cache here?
+ */
+ if (so) {
+ for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
+ (struct quehead *) ifq != &slirp->if_batchq;
+ ifq = ifq->ifq_prev) {
+ if (so == ifq->ifq_so) {
+ /* A match! */
+ ifm->ifq_so = so;
+ ifs_insque(ifm, ifq->ifs_prev);
+ goto diddit;
+ }
+ }
+ }
+
+ /* No match, check which queue to put it on */
+ if (so && (so->so_iptos & IPTOS_LOWDELAY)) {
+ ifq = (struct mbuf *) slirp->if_fastq.qh_rlink;
+ on_fastq = 1;
+ /*
+ * Check if this packet is a part of the last
+ * packet's session
+ */
+ if (ifq->ifq_so == so) {
+ ifm->ifq_so = so;
+ ifs_insque(ifm, ifq->ifs_prev);
+ goto diddit;
+ }
+ } else {
+ ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
+ }
+
+ /* Create a new doubly linked list for this session */
+ ifm->ifq_so = so;
+ ifs_init(ifm);
+ insque(ifm, ifq);
+
+diddit:
+ if (so) {
+ /* Update *_queued */
+ so->so_queued++;
+ so->so_nqueued++;
+ /*
+ * Check if the interactive session should be downgraded to
+ * the batchq. A session is downgraded if it has queued 6
+ * packets without pausing, and at least 3 of those packets
+ * have been sent over the link
+ * (XXX These are arbitrary numbers, probably not optimal..)
+ */
+ if (on_fastq && ((so->so_nqueued >= 6) &&
+ (so->so_nqueued - so->so_queued) >= 3)) {
+
+ /* Remove from current queue... */
+ remque(ifm->ifs_next);
+
+ /* ...And insert in the new. That'll teach ya! */
+ insque(ifm->ifs_next, &slirp->if_batchq);
+ }
+ }
+
+ /*
+ * This prevents us from malloc()ing too many mbufs
+ */
+ if_start(ifm->slirp);
+}
+
+/*
+ * Send one packet from each session.
+ * If there are packets on the fastq, they are sent FIFO, before
+ * everything else. Then we choose the first packet from each
+ * batchq session (socket) and send it.
+ * For example, if there are 3 ftp sessions fighting for bandwidth,
+ * one packet will be sent from the first session, then one packet
+ * from the second session, then one packet from the third.
+ */
+void if_start(Slirp *slirp)
+{
+ uint64_t now = slirp->cb->clock_get_ns(slirp->opaque);
+ bool from_batchq = false;
+ struct mbuf *ifm, *ifm_next, *ifqt;
+
+ DEBUG_CALL("if_start");
+
+ if (slirp->if_start_busy) {
+ return;
+ }
+ slirp->if_start_busy = true;
+
+ struct mbuf *batch_head = NULL;
+ if (slirp->if_batchq.qh_link != &slirp->if_batchq) {
+ batch_head = (struct mbuf *) slirp->if_batchq.qh_link;
+ }
+
+ if (slirp->if_fastq.qh_link != &slirp->if_fastq) {
+ ifm_next = (struct mbuf *) slirp->if_fastq.qh_link;
+ } else if (batch_head) {
+ /* Nothing on fastq, pick up from batchq */
+ ifm_next = batch_head;
+ from_batchq = true;
+ } else {
+ ifm_next = NULL;
+ }
+
+ while (ifm_next) {
+ ifm = ifm_next;
+
+ ifm_next = ifm->ifq_next;
+ if ((struct quehead *) ifm_next == &slirp->if_fastq) {
+ /* No more packets in fastq, switch to batchq */
+ ifm_next = batch_head;
+ from_batchq = true;
+ }
+ if ((struct quehead *) ifm_next == &slirp->if_batchq) {
+ /* end of batchq */
+ ifm_next = NULL;
+ }
+
+ /* Try to send packet unless it already expired */
+ if (ifm->expiration_date >= now && !if_encap(slirp, ifm)) {
+ /* Packet is delayed due to pending ARP or NDP resolution */
+ continue;
+ }
+
+ /* Remove it from the queue */
+ ifqt = ifm->ifq_prev;
+ remque(ifm);
+
+ /* If there are more packets for this session, re-queue them */
+ if (ifm->ifs_next != ifm) {
+ struct mbuf *next = ifm->ifs_next;
+
+ insque(next, ifqt);
+ ifs_remque(ifm);
+ if (!from_batchq) {
+ ifm_next = next;
+ }
+ }
+
+ /* Update so_queued */
+ if (ifm->ifq_so && --ifm->ifq_so->so_queued == 0) {
+ /* If there's no more queued, reset nqueued */
+ ifm->ifq_so->so_nqueued = 0;
+ }
+
+ m_free(ifm);
+ }
+
+ slirp->if_start_busy = false;
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef IF_H
+#define IF_H
+
+#define IF_COMPRESS 0x01 /* We want compression */
+#define IF_NOCOMPRESS 0x02 /* Do not do compression */
+#define IF_AUTOCOMP 0x04 /* Autodetect (default) */
+#define IF_NOCIDCOMP 0x08 /* CID compression */
+
+#define IF_MTU 1500
+#define IF_MRU 1500
+#define IF_COMP IF_AUTOCOMP /* Flags for compression */
+
+/* 2 for alignment, 14 for ethernet */
+#define IF_MAXLINKHDR (2 + ETH_HLEN)
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ip.h 8.1 (Berkeley) 6/10/93
+ * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
+ */
+
+#ifndef IP_H
+#define IP_H
+
+#include <glib.h>
+
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+# undef NTOHL
+# undef NTOHS
+# undef HTONL
+# undef HTONS
+# define NTOHL(d)
+# define NTOHS(d)
+# define HTONL(d)
+# define HTONS(d)
+#else
+# ifndef NTOHL
+# define NTOHL(d) ((d) = ntohl((d)))
+# endif
+# ifndef NTOHS
+# define NTOHS(d) ((d) = ntohs((uint16_t)(d)))
+# endif
+# ifndef HTONL
+# define HTONL(d) ((d) = htonl((d)))
+# endif
+# ifndef HTONS
+# define HTONS(d) ((d) = htons((uint16_t)(d)))
+# endif
+#endif
+
+typedef uint32_t n_long; /* long as received from the net */
+
+/*
+ * Definitions for internet protocol version 4.
+ * Per RFC 791, September 1981.
+ */
+#define IPVERSION 4
+
+/*
+ * Structure of an internet header, naked of options.
+ */
+struct ip {
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint8_t ip_v:4, /* version */
+ ip_hl:4; /* header length */
+#else
+ uint8_t ip_hl:4, /* header length */
+ ip_v:4; /* version */
+#endif
+ uint8_t ip_tos; /* type of service */
+ uint16_t ip_len; /* total length */
+ uint16_t ip_id; /* identification */
+ uint16_t ip_off; /* fragment offset field */
+#define IP_DF 0x4000 /* don't fragment flag */
+#define IP_MF 0x2000 /* more fragments flag */
+#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
+ uint8_t ip_ttl; /* time to live */
+ uint8_t ip_p; /* protocol */
+ uint16_t ip_sum; /* checksum */
+ struct in_addr ip_src,ip_dst; /* source and dest address */
+} SLIRP_PACKED;
+
+#define IP_MAXPACKET 65535 /* maximum packet size */
+
+/*
+ * Definitions for IP type of service (ip_tos)
+ */
+#define IPTOS_LOWDELAY 0x10
+#define IPTOS_THROUGHPUT 0x08
+#define IPTOS_RELIABILITY 0x04
+
+/*
+ * Definitions for options.
+ */
+#define IPOPT_COPIED(o) ((o)&0x80)
+#define IPOPT_CLASS(o) ((o)&0x60)
+#define IPOPT_NUMBER(o) ((o)&0x1f)
+
+#define IPOPT_CONTROL 0x00
+#define IPOPT_RESERVED1 0x20
+#define IPOPT_DEBMEAS 0x40
+#define IPOPT_RESERVED2 0x60
+
+#define IPOPT_EOL 0 /* end of option list */
+#define IPOPT_NOP 1 /* no operation */
+
+#define IPOPT_RR 7 /* record packet route */
+#define IPOPT_TS 68 /* timestamp */
+#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
+#define IPOPT_LSRR 131 /* loose source route */
+#define IPOPT_SATID 136 /* satnet id */
+#define IPOPT_SSRR 137 /* strict source route */
+
+/*
+ * Offsets to fields in options other than EOL and NOP.
+ */
+#define IPOPT_OPTVAL 0 /* option ID */
+#define IPOPT_OLEN 1 /* option length */
+#define IPOPT_OFFSET 2 /* offset within option */
+#define IPOPT_MINOFF 4 /* min value of above */
+
+/*
+ * Time stamp option structure.
+ */
+struct ip_timestamp {
+ uint8_t ipt_code; /* IPOPT_TS */
+ uint8_t ipt_len; /* size of structure (variable) */
+ uint8_t ipt_ptr; /* index of current entry */
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint8_t ipt_oflw:4, /* overflow counter */
+ ipt_flg:4; /* flags, see below */
+#else
+ uint8_t ipt_flg:4, /* flags, see below */
+ ipt_oflw:4; /* overflow counter */
+#endif
+ union ipt_timestamp {
+ n_long ipt_time[1];
+ struct ipt_ta {
+ struct in_addr ipt_addr;
+ n_long ipt_time;
+ } ipt_ta[1];
+ } ipt_timestamp;
+} SLIRP_PACKED;
+
+/* flag bits for ipt_flg */
+#define IPOPT_TS_TSONLY 0 /* timestamps only */
+#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
+#define IPOPT_TS_PRESPEC 3 /* specified modules only */
+
+/* bits for security (not byte swapped) */
+#define IPOPT_SECUR_UNCLASS 0x0000
+#define IPOPT_SECUR_CONFID 0xf135
+#define IPOPT_SECUR_EFTO 0x789a
+#define IPOPT_SECUR_MMMM 0xbc4d
+#define IPOPT_SECUR_RESTR 0xaf13
+#define IPOPT_SECUR_SECRET 0xd788
+#define IPOPT_SECUR_TOPSECRET 0x6bc5
+
+/*
+ * Internet implementation parameters.
+ */
+#define MAXTTL 255 /* maximum time to live (seconds) */
+#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
+#define IPFRAGTTL 60 /* time to live for frags, slowhz */
+#define IPTTLDEC 1 /* subtracted when forwarding */
+
+#define IP_MSS 576 /* default maximum segment size */
+
+#if GLIB_SIZEOF_VOID_P == 4
+struct mbuf_ptr {
+ struct mbuf *mptr;
+ uint32_t dummy;
+} SLIRP_PACKED;
+#else
+struct mbuf_ptr {
+ struct mbuf *mptr;
+} SLIRP_PACKED;
+#endif
+struct qlink {
+ void *next, *prev;
+};
+
+/*
+ * Overlay for ip header used by other protocols (tcp, udp).
+ */
+struct ipovly {
+ struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
+ uint8_t ih_x1; /* (unused) */
+ uint8_t ih_pr; /* protocol */
+ uint16_t ih_len; /* protocol length */
+ struct in_addr ih_src; /* source internet address */
+ struct in_addr ih_dst; /* destination internet address */
+} SLIRP_PACKED;
+
+/*
+ * Ip reassembly queue structure. Each fragment
+ * being reassembled is attached to one of these structures.
+ * They are timed out after ipq_ttl drops to 0, and may also
+ * be reclaimed if memory becomes tight.
+ * size 28 bytes
+ */
+struct ipq {
+ struct qlink frag_link; /* to ip headers of fragments */
+ struct qlink ip_link; /* to other reass headers */
+ uint8_t ipq_ttl; /* time for reass q to live */
+ uint8_t ipq_p; /* protocol of this fragment */
+ uint16_t ipq_id; /* sequence id for reassembly */
+ struct in_addr ipq_src,ipq_dst;
+};
+
+/*
+ * Ip header, when holding a fragment.
+ *
+ * Note: ipf_link must be at same offset as frag_link above
+ */
+struct ipasfrag {
+ struct qlink ipf_link;
+ struct ip ipf_ip;
+};
+
+G_STATIC_ASSERT(offsetof(struct ipq, frag_link) ==
+ offsetof(struct ipasfrag, ipf_link));
+
+#define ipf_off ipf_ip.ip_off
+#define ipf_tos ipf_ip.ip_tos
+#define ipf_len ipf_ip.ip_len
+#define ipf_next ipf_link.next
+#define ipf_prev ipf_link.prev
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#ifndef SLIRP_IP6_H
+#define SLIRP_IP6_H
+
+#include <glib.h>
+#include <string.h>
+
+#define ALLNODES_MULTICAST { .s6_addr = \
+ { 0xff, 0x02, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x01 } }
+
+#define SOLICITED_NODE_PREFIX { .s6_addr = \
+ { 0xff, 0x02, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x01,\
+ 0xff, 0x00, 0x00, 0x00 } }
+
+#define LINKLOCAL_ADDR { .s6_addr = \
+ { 0xfe, 0x80, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x02 } }
+
+#define ZERO_ADDR { .s6_addr = \
+ { 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00 } }
+
+static inline bool in6_equal(const struct in6_addr *a, const struct in6_addr *b)
+{
+ return memcmp(a, b, sizeof(*a)) == 0;
+}
+
+static inline bool in6_equal_net(const struct in6_addr *a,
+ const struct in6_addr *b,
+ int prefix_len)
+{
+ if (memcmp(a, b, prefix_len / 8) != 0) {
+ return 0;
+ }
+
+ if (prefix_len % 8 == 0) {
+ return 1;
+ }
+
+ return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8))
+ == b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8));
+}
+
+static inline bool in6_equal_mach(const struct in6_addr *a,
+ const struct in6_addr *b,
+ int prefix_len)
+{
+ if (memcmp(&(a->s6_addr[DIV_ROUND_UP(prefix_len, 8)]),
+ &(b->s6_addr[DIV_ROUND_UP(prefix_len, 8)]),
+ 16 - DIV_ROUND_UP(prefix_len, 8)) != 0) {
+ return 0;
+ }
+
+ if (prefix_len % 8 == 0) {
+ return 1;
+ }
+
+ return (a->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1))
+ == (b->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1));
+}
+
+
+#define in6_equal_router(a)\
+ ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\
+ && in6_equal_mach(a, &slirp->vhost_addr6, slirp->vprefix_len))\
+ || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\
+ && in6_equal_mach(a, &slirp->vhost_addr6, 64)))
+
+#define in6_equal_dns(a)\
+ ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\
+ && in6_equal_mach(a, &slirp->vnameserver_addr6, slirp->vprefix_len))\
+ || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\
+ && in6_equal_mach(a, &slirp->vnameserver_addr6, 64)))
+
+#define in6_equal_host(a)\
+ (in6_equal_router(a) || in6_equal_dns(a))
+
+#define in6_solicitednode_multicast(a)\
+ (in6_equal_net(a, &(struct in6_addr)SOLICITED_NODE_PREFIX, 104))
+
+#define in6_zero(a)\
+ (in6_equal(a, &(struct in6_addr)ZERO_ADDR))
+
+/* Compute emulated host MAC address from its ipv6 address */
+static inline void in6_compute_ethaddr(struct in6_addr ip,
+ uint8_t eth[ETH_ALEN])
+{
+ eth[0] = 0x52;
+ eth[1] = 0x56;
+ memcpy(ð[2], &ip.s6_addr[16 - (ETH_ALEN - 2)], ETH_ALEN - 2);
+}
+
+/*
+ * Definitions for internet protocol version 6.
+ * Per RFC 2460, December 1998.
+ */
+#define IP6VERSION 6
+#define IP6_HOP_LIMIT 255
+
+/*
+ * Structure of an internet header, naked of options.
+ */
+struct ip6 {
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint32_t
+ ip_v:4, /* version */
+ ip_tc_hi:4, /* traffic class */
+ ip_tc_lo:4,
+ ip_fl_hi:4, /* flow label */
+ ip_fl_lo:16;
+#else
+ uint32_t
+ ip_tc_hi:4,
+ ip_v:4,
+ ip_fl_hi:4,
+ ip_tc_lo:4,
+ ip_fl_lo:16;
+#endif
+ uint16_t ip_pl; /* payload length */
+ uint8_t ip_nh; /* next header */
+ uint8_t ip_hl; /* hop limit */
+ struct in6_addr ip_src, ip_dst; /* source and dest address */
+};
+
+/*
+ * IPv6 pseudo-header used by upper-layer protocols
+ */
+struct ip6_pseudohdr {
+ struct in6_addr ih_src; /* source internet address */
+ struct in6_addr ih_dst; /* destination internet address */
+ uint32_t ih_pl; /* upper-layer packet length */
+ uint16_t ih_zero_hi; /* zero */
+ uint8_t ih_zero_lo; /* zero */
+ uint8_t ih_nh; /* next header */
+};
+
+/*
+ * We don't want to mark these ip6 structs as packed as they are naturally
+ * correctly aligned; instead assert that there is no stray padding.
+ * If we marked the struct as packed then we would be unable to take
+ * the address of any of the fields in it.
+ */
+G_STATIC_ASSERT(sizeof(struct ip6) == 40);
+G_STATIC_ASSERT(sizeof(struct ip6_pseudohdr) == 40);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#include "slirp.h"
+#include "ip6_icmp.h"
+
+#define NDP_Interval g_rand_int_range(slirp->grand, \
+ NDP_MinRtrAdvInterval, NDP_MaxRtrAdvInterval)
+
+static void ra_timer_handler(void *opaque)
+{
+ Slirp *slirp = opaque;
+
+ slirp->cb->timer_mod(slirp->ra_timer,
+ slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval,
+ slirp->opaque);
+ ndp_send_ra(slirp);
+}
+
+void icmp6_init(Slirp *slirp)
+{
+ if (!slirp->in6_enabled) {
+ return;
+ }
+
+ slirp->ra_timer = slirp->cb->timer_new(ra_timer_handler, slirp, slirp->opaque);
+ slirp->cb->timer_mod(slirp->ra_timer,
+ slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval,
+ slirp->opaque);
+}
+
+void icmp6_cleanup(Slirp *slirp)
+{
+ if (!slirp->in6_enabled) {
+ return;
+ }
+
+ slirp->cb->timer_free(slirp->ra_timer, slirp->opaque);
+}
+
+static void icmp6_send_echoreply(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
+ struct icmp6 *icmp)
+{
+ struct mbuf *t = m_get(slirp);
+ t->m_len = sizeof(struct ip6) + ntohs(ip->ip_pl);
+ memcpy(t->m_data, m->m_data, t->m_len);
+
+ /* IPv6 Packet */
+ struct ip6 *rip = mtod(t, struct ip6 *);
+ rip->ip_dst = ip->ip_src;
+ rip->ip_src = ip->ip_dst;
+
+ /* ICMPv6 packet */
+ t->m_data += sizeof(struct ip6);
+ struct icmp6 *ricmp = mtod(t, struct icmp6 *);
+ ricmp->icmp6_type = ICMP6_ECHO_REPLY;
+ ricmp->icmp6_cksum = 0;
+
+ /* Checksum */
+ t->m_data -= sizeof(struct ip6);
+ ricmp->icmp6_cksum = ip6_cksum(t);
+
+ ip6_output(NULL, t, 0);
+}
+
+void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code)
+{
+ Slirp *slirp = m->slirp;
+ struct mbuf *t;
+ struct ip6 *ip = mtod(m, struct ip6 *);
+ char addrstr[INET6_ADDRSTRLEN];
+
+ DEBUG_CALL("icmp6_send_error");
+ DEBUG_ARG("type = %d, code = %d", type, code);
+
+ if (IN6_IS_ADDR_MULTICAST(&ip->ip_src) ||
+ in6_zero(&ip->ip_src)) {
+ /* TODO icmp error? */
+ return;
+ }
+
+ t = m_get(slirp);
+
+ /* IPv6 packet */
+ struct ip6 *rip = mtod(t, struct ip6 *);
+ rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR;
+ rip->ip_dst = ip->ip_src;
+ inet_ntop(AF_INET6, &rip->ip_dst, addrstr, INET6_ADDRSTRLEN);
+ DEBUG_ARG("target = %s", addrstr);
+
+ rip->ip_nh = IPPROTO_ICMPV6;
+ const int error_data_len = MIN(m->m_len,
+ IF_MTU - (sizeof(struct ip6) + ICMP6_ERROR_MINLEN));
+ rip->ip_pl = htons(ICMP6_ERROR_MINLEN + error_data_len);
+ t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
+
+ /* ICMPv6 packet */
+ t->m_data += sizeof(struct ip6);
+ struct icmp6 *ricmp = mtod(t, struct icmp6 *);
+ ricmp->icmp6_type = type;
+ ricmp->icmp6_code = code;
+ ricmp->icmp6_cksum = 0;
+
+ switch (type) {
+ case ICMP6_UNREACH:
+ case ICMP6_TIMXCEED:
+ ricmp->icmp6_err.unused = 0;
+ break;
+ case ICMP6_TOOBIG:
+ ricmp->icmp6_err.mtu = htonl(IF_MTU);
+ break;
+ case ICMP6_PARAMPROB:
+ /* TODO: Handle this case */
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+ t->m_data += ICMP6_ERROR_MINLEN;
+ memcpy(t->m_data, m->m_data, error_data_len);
+
+ /* Checksum */
+ t->m_data -= ICMP6_ERROR_MINLEN;
+ t->m_data -= sizeof(struct ip6);
+ ricmp->icmp6_cksum = ip6_cksum(t);
+
+ ip6_output(NULL, t, 0);
+}
+
+/*
+ * Send NDP Router Advertisement
+ */
+void ndp_send_ra(Slirp *slirp)
+{
+ DEBUG_CALL("ndp_send_ra");
+
+ /* Build IPv6 packet */
+ struct mbuf *t = m_get(slirp);
+ struct ip6 *rip = mtod(t, struct ip6 *);
+ size_t pl_size = 0;
+ struct in6_addr addr;
+ uint32_t scope_id;
+
+ rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR;
+ rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST;
+ rip->ip_nh = IPPROTO_ICMPV6;
+
+ /* Build ICMPv6 packet */
+ t->m_data += sizeof(struct ip6);
+ struct icmp6 *ricmp = mtod(t, struct icmp6 *);
+ ricmp->icmp6_type = ICMP6_NDP_RA;
+ ricmp->icmp6_code = 0;
+ ricmp->icmp6_cksum = 0;
+
+ /* NDP */
+ ricmp->icmp6_nra.chl = NDP_AdvCurHopLimit;
+ ricmp->icmp6_nra.M = NDP_AdvManagedFlag;
+ ricmp->icmp6_nra.O = NDP_AdvOtherConfigFlag;
+ ricmp->icmp6_nra.reserved = 0;
+ ricmp->icmp6_nra.lifetime = htons(NDP_AdvDefaultLifetime);
+ ricmp->icmp6_nra.reach_time = htonl(NDP_AdvReachableTime);
+ ricmp->icmp6_nra.retrans_time = htonl(NDP_AdvRetransTime);
+ t->m_data += ICMP6_NDP_RA_MINLEN;
+ pl_size += ICMP6_NDP_RA_MINLEN;
+
+ /* Source link-layer address (NDP option) */
+ struct ndpopt *opt = mtod(t, struct ndpopt *);
+ opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE;
+ opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
+ in6_compute_ethaddr(rip->ip_src, opt->ndpopt_linklayer);
+ t->m_data += NDPOPT_LINKLAYER_LEN;
+ pl_size += NDPOPT_LINKLAYER_LEN;
+
+ /* Prefix information (NDP option) */
+ struct ndpopt *opt2 = mtod(t, struct ndpopt *);
+ opt2->ndpopt_type = NDPOPT_PREFIX_INFO;
+ opt2->ndpopt_len = NDPOPT_PREFIXINFO_LEN / 8;
+ opt2->ndpopt_prefixinfo.prefix_length = slirp->vprefix_len;
+ opt2->ndpopt_prefixinfo.L = 1;
+ opt2->ndpopt_prefixinfo.A = 1;
+ opt2->ndpopt_prefixinfo.reserved1 = 0;
+ opt2->ndpopt_prefixinfo.valid_lt = htonl(NDP_AdvValidLifetime);
+ opt2->ndpopt_prefixinfo.pref_lt = htonl(NDP_AdvPrefLifetime);
+ opt2->ndpopt_prefixinfo.reserved2 = 0;
+ opt2->ndpopt_prefixinfo.prefix = slirp->vprefix_addr6;
+ t->m_data += NDPOPT_PREFIXINFO_LEN;
+ pl_size += NDPOPT_PREFIXINFO_LEN;
+
+ /* Prefix information (NDP option) */
+ if (get_dns6_addr(&addr, &scope_id) >= 0) {
+ /* Host system does have an IPv6 DNS server, announce our proxy. */
+ struct ndpopt *opt3 = mtod(t, struct ndpopt *);
+ opt3->ndpopt_type = NDPOPT_RDNSS;
+ opt3->ndpopt_len = NDPOPT_RDNSS_LEN / 8;
+ opt3->ndpopt_rdnss.reserved = 0;
+ opt3->ndpopt_rdnss.lifetime = htonl(2 * NDP_MaxRtrAdvInterval);
+ opt3->ndpopt_rdnss.addr = slirp->vnameserver_addr6;
+ t->m_data += NDPOPT_RDNSS_LEN;
+ pl_size += NDPOPT_RDNSS_LEN;
+ }
+
+ rip->ip_pl = htons(pl_size);
+ t->m_data -= sizeof(struct ip6) + pl_size;
+ t->m_len = sizeof(struct ip6) + pl_size;
+
+ /* ICMPv6 Checksum */
+ ricmp->icmp6_cksum = ip6_cksum(t);
+
+ ip6_output(NULL, t, 0);
+}
+
+/*
+ * Send NDP Neighbor Solitication
+ */
+void ndp_send_ns(Slirp *slirp, struct in6_addr addr)
+{
+ char addrstr[INET6_ADDRSTRLEN];
+
+ inet_ntop(AF_INET6, &addr, addrstr, INET6_ADDRSTRLEN);
+
+ DEBUG_CALL("ndp_send_ns");
+ DEBUG_ARG("target = %s", addrstr);
+
+ /* Build IPv6 packet */
+ struct mbuf *t = m_get(slirp);
+ struct ip6 *rip = mtod(t, struct ip6 *);
+ rip->ip_src = slirp->vhost_addr6;
+ rip->ip_dst = (struct in6_addr)SOLICITED_NODE_PREFIX;
+ memcpy(&rip->ip_dst.s6_addr[13], &addr.s6_addr[13], 3);
+ rip->ip_nh = IPPROTO_ICMPV6;
+ rip->ip_pl = htons(ICMP6_NDP_NS_MINLEN + NDPOPT_LINKLAYER_LEN);
+ t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
+
+ /* Build ICMPv6 packet */
+ t->m_data += sizeof(struct ip6);
+ struct icmp6 *ricmp = mtod(t, struct icmp6 *);
+ ricmp->icmp6_type = ICMP6_NDP_NS;
+ ricmp->icmp6_code = 0;
+ ricmp->icmp6_cksum = 0;
+
+ /* NDP */
+ ricmp->icmp6_nns.reserved = 0;
+ ricmp->icmp6_nns.target = addr;
+
+ /* Build NDP option */
+ t->m_data += ICMP6_NDP_NS_MINLEN;
+ struct ndpopt *opt = mtod(t, struct ndpopt *);
+ opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE;
+ opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
+ in6_compute_ethaddr(slirp->vhost_addr6, opt->ndpopt_linklayer);
+
+ /* ICMPv6 Checksum */
+ t->m_data -= ICMP6_NDP_NA_MINLEN;
+ t->m_data -= sizeof(struct ip6);
+ ricmp->icmp6_cksum = ip6_cksum(t);
+
+ ip6_output(NULL, t, 1);
+}
+
+/*
+ * Send NDP Neighbor Advertisement
+ */
+static void ndp_send_na(Slirp *slirp, struct ip6 *ip, struct icmp6 *icmp)
+{
+ /* Build IPv6 packet */
+ struct mbuf *t = m_get(slirp);
+ struct ip6 *rip = mtod(t, struct ip6 *);
+ rip->ip_src = icmp->icmp6_nns.target;
+ if (in6_zero(&ip->ip_src)) {
+ rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST;
+ } else {
+ rip->ip_dst = ip->ip_src;
+ }
+ rip->ip_nh = IPPROTO_ICMPV6;
+ rip->ip_pl = htons(ICMP6_NDP_NA_MINLEN
+ + NDPOPT_LINKLAYER_LEN);
+ t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl);
+
+ /* Build ICMPv6 packet */
+ t->m_data += sizeof(struct ip6);
+ struct icmp6 *ricmp = mtod(t, struct icmp6 *);
+ ricmp->icmp6_type = ICMP6_NDP_NA;
+ ricmp->icmp6_code = 0;
+ ricmp->icmp6_cksum = 0;
+
+ /* NDP */
+ ricmp->icmp6_nna.R = NDP_IsRouter;
+ ricmp->icmp6_nna.S = !IN6_IS_ADDR_MULTICAST(&rip->ip_dst);
+ ricmp->icmp6_nna.O = 1;
+ ricmp->icmp6_nna.reserved_hi = 0;
+ ricmp->icmp6_nna.reserved_lo = 0;
+ ricmp->icmp6_nna.target = icmp->icmp6_nns.target;
+
+ /* Build NDP option */
+ t->m_data += ICMP6_NDP_NA_MINLEN;
+ struct ndpopt *opt = mtod(t, struct ndpopt *);
+ opt->ndpopt_type = NDPOPT_LINKLAYER_TARGET;
+ opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8;
+ in6_compute_ethaddr(ricmp->icmp6_nna.target,
+ opt->ndpopt_linklayer);
+
+ /* ICMPv6 Checksum */
+ t->m_data -= ICMP6_NDP_NA_MINLEN;
+ t->m_data -= sizeof(struct ip6);
+ ricmp->icmp6_cksum = ip6_cksum(t);
+
+ ip6_output(NULL, t, 0);
+}
+
+/*
+ * Process a NDP message
+ */
+static void ndp_input(struct mbuf *m, Slirp *slirp, struct ip6 *ip,
+ struct icmp6 *icmp)
+{
+ m->m_len += ETH_HLEN;
+ m->m_data -= ETH_HLEN;
+ struct ethhdr *eth = mtod(m, struct ethhdr *);
+ m->m_len -= ETH_HLEN;
+ m->m_data += ETH_HLEN;
+
+ switch (icmp->icmp6_type) {
+ case ICMP6_NDP_RS:
+ DEBUG_CALL(" type = Router Solicitation");
+ if (ip->ip_hl == 255
+ && icmp->icmp6_code == 0
+ && ntohs(ip->ip_pl) >= ICMP6_NDP_RS_MINLEN) {
+ /* Gratuitous NDP */
+ ndp_table_add(slirp, ip->ip_src, eth->h_source);
+
+ ndp_send_ra(slirp);
+ }
+ break;
+
+ case ICMP6_NDP_RA:
+ DEBUG_CALL(" type = Router Advertisement");
+ slirp->cb->guest_error("Warning: guest sent NDP RA, but shouldn't",
+ slirp->opaque);
+ break;
+
+ case ICMP6_NDP_NS:
+ DEBUG_CALL(" type = Neighbor Solicitation");
+ if (ip->ip_hl == 255
+ && icmp->icmp6_code == 0
+ && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nns.target)
+ && ntohs(ip->ip_pl) >= ICMP6_NDP_NS_MINLEN
+ && (!in6_zero(&ip->ip_src)
+ || in6_solicitednode_multicast(&ip->ip_dst))) {
+ if (in6_equal_host(&icmp->icmp6_nns.target)) {
+ /* Gratuitous NDP */
+ ndp_table_add(slirp, ip->ip_src, eth->h_source);
+ ndp_send_na(slirp, ip, icmp);
+ }
+ }
+ break;
+
+ case ICMP6_NDP_NA:
+ DEBUG_CALL(" type = Neighbor Advertisement");
+ if (ip->ip_hl == 255
+ && icmp->icmp6_code == 0
+ && ntohs(ip->ip_pl) >= ICMP6_NDP_NA_MINLEN
+ && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nna.target)
+ && (!IN6_IS_ADDR_MULTICAST(&ip->ip_dst)
+ || icmp->icmp6_nna.S == 0)) {
+ ndp_table_add(slirp, ip->ip_src, eth->h_source);
+ }
+ break;
+
+ case ICMP6_NDP_REDIRECT:
+ DEBUG_CALL(" type = Redirect");
+ slirp->cb->guest_error(
+ "Warning: guest sent NDP REDIRECT, but shouldn't", slirp->opaque);
+ break;
+ }
+}
+
+/*
+ * Process a received ICMPv6 message.
+ */
+void icmp6_input(struct mbuf *m)
+{
+ struct icmp6 *icmp;
+ struct ip6 *ip = mtod(m, struct ip6 *);
+ Slirp *slirp = m->slirp;
+ int hlen = sizeof(struct ip6);
+
+ DEBUG_CALL("icmp6_input");
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("m_len = %d", m->m_len);
+
+ if (ntohs(ip->ip_pl) < ICMP6_MINLEN) {
+ goto end;
+ }
+
+ if (ip6_cksum(m)) {
+ goto end;
+ }
+
+ m->m_len -= hlen;
+ m->m_data += hlen;
+ icmp = mtod(m, struct icmp6 *);
+ m->m_len += hlen;
+ m->m_data -= hlen;
+
+ DEBUG_ARG("icmp6_type = %d", icmp->icmp6_type);
+ switch (icmp->icmp6_type) {
+ case ICMP6_ECHO_REQUEST:
+ if (in6_equal_host(&ip->ip_dst)) {
+ icmp6_send_echoreply(m, slirp, ip, icmp);
+ } else {
+ /* TODO */
+ g_critical("external icmpv6 not supported yet");
+ }
+ break;
+
+ case ICMP6_NDP_RS:
+ case ICMP6_NDP_RA:
+ case ICMP6_NDP_NS:
+ case ICMP6_NDP_NA:
+ case ICMP6_NDP_REDIRECT:
+ ndp_input(m, slirp, ip, icmp);
+ break;
+
+ case ICMP6_UNREACH:
+ case ICMP6_TOOBIG:
+ case ICMP6_TIMXCEED:
+ case ICMP6_PARAMPROB:
+ /* XXX? report error? close socket? */
+ default:
+ break;
+ }
+
+end:
+ m_free(m);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#ifndef SLIRP_IP6_ICMP_H
+#define SLIRP_IP6_ICMP_H
+
+/*
+ * Interface Control Message Protocol version 6 Definitions.
+ * Per RFC 4443, March 2006.
+ *
+ * Network Discover Protocol Definitions.
+ * Per RFC 4861, September 2007.
+ */
+
+struct icmp6_echo { /* Echo Messages */
+ uint16_t id;
+ uint16_t seq_num;
+};
+
+union icmp6_error_body {
+ uint32_t unused;
+ uint32_t pointer;
+ uint32_t mtu;
+};
+
+/*
+ * NDP Messages
+ */
+struct ndp_rs { /* Router Solicitation Message */
+ uint32_t reserved;
+};
+
+struct ndp_ra { /* Router Advertisement Message */
+ uint8_t chl; /* Cur Hop Limit */
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint8_t
+ M:1,
+ O:1,
+ reserved:6;
+#else
+ uint8_t
+ reserved:6,
+ O:1,
+ M:1;
+#endif
+ uint16_t lifetime; /* Router Lifetime */
+ uint32_t reach_time; /* Reachable Time */
+ uint32_t retrans_time; /* Retrans Timer */
+};
+
+G_STATIC_ASSERT(sizeof(struct ndp_ra) == 12);
+
+struct ndp_ns { /* Neighbor Solicitation Message */
+ uint32_t reserved;
+ struct in6_addr target; /* Target Address */
+};
+
+G_STATIC_ASSERT(sizeof(struct ndp_ns) == 20);
+
+struct ndp_na { /* Neighbor Advertisement Message */
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint32_t
+ R:1, /* Router Flag */
+ S:1, /* Solicited Flag */
+ O:1, /* Override Flag */
+ reserved_hi:5,
+ reserved_lo:24;
+#else
+ uint32_t
+ reserved_hi:5,
+ O:1,
+ S:1,
+ R:1,
+ reserved_lo:24;
+#endif
+ struct in6_addr target; /* Target Address */
+};
+
+G_STATIC_ASSERT(sizeof(struct ndp_na) == 20);
+
+struct ndp_redirect {
+ uint32_t reserved;
+ struct in6_addr target; /* Target Address */
+ struct in6_addr dest; /* Destination Address */
+};
+
+G_STATIC_ASSERT(sizeof(struct ndp_redirect) == 36);
+
+/*
+ * Structure of an icmpv6 header.
+ */
+struct icmp6 {
+ uint8_t icmp6_type; /* type of message, see below */
+ uint8_t icmp6_code; /* type sub code */
+ uint16_t icmp6_cksum; /* ones complement cksum of struct */
+ union {
+ union icmp6_error_body error_body;
+ struct icmp6_echo echo;
+ struct ndp_rs ndp_rs;
+ struct ndp_ra ndp_ra;
+ struct ndp_ns ndp_ns;
+ struct ndp_na ndp_na;
+ struct ndp_redirect ndp_redirect;
+ } icmp6_body;
+#define icmp6_err icmp6_body.error_body
+#define icmp6_echo icmp6_body.echo
+#define icmp6_nrs icmp6_body.ndp_rs
+#define icmp6_nra icmp6_body.ndp_ra
+#define icmp6_nns icmp6_body.ndp_ns
+#define icmp6_nna icmp6_body.ndp_na
+#define icmp6_redirect icmp6_body.ndp_redirect
+};
+
+G_STATIC_ASSERT(sizeof(struct icmp6) == 40);
+
+#define ICMP6_MINLEN 4
+#define ICMP6_ERROR_MINLEN 8
+#define ICMP6_ECHO_MINLEN 8
+#define ICMP6_NDP_RS_MINLEN 8
+#define ICMP6_NDP_RA_MINLEN 16
+#define ICMP6_NDP_NS_MINLEN 24
+#define ICMP6_NDP_NA_MINLEN 24
+#define ICMP6_NDP_REDIRECT_MINLEN 40
+
+/*
+ * NDP Options
+ */
+struct ndpopt {
+ uint8_t ndpopt_type; /* Option type */
+ uint8_t ndpopt_len; /* /!\ In units of 8 octets */
+ union {
+ unsigned char linklayer_addr[6]; /* Source/Target Link-layer */
+#define ndpopt_linklayer ndpopt_body.linklayer_addr
+ struct prefixinfo { /* Prefix Information */
+ uint8_t prefix_length;
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint8_t L:1, A:1, reserved1:6;
+#else
+ uint8_t reserved1:6, A:1, L:1;
+#endif
+ uint32_t valid_lt; /* Valid Lifetime */
+ uint32_t pref_lt; /* Preferred Lifetime */
+ uint32_t reserved2;
+ struct in6_addr prefix;
+ } SLIRP_PACKED prefixinfo;
+#define ndpopt_prefixinfo ndpopt_body.prefixinfo
+ struct rdnss {
+ uint16_t reserved;
+ uint32_t lifetime;
+ struct in6_addr addr;
+ } SLIRP_PACKED rdnss;
+#define ndpopt_rdnss ndpopt_body.rdnss
+ } ndpopt_body;
+} SLIRP_PACKED;
+
+/* NDP options type */
+#define NDPOPT_LINKLAYER_SOURCE 1 /* Source Link-Layer Address */
+#define NDPOPT_LINKLAYER_TARGET 2 /* Target Link-Layer Address */
+#define NDPOPT_PREFIX_INFO 3 /* Prefix Information */
+#define NDPOPT_RDNSS 25 /* Recursive DNS Server Address */
+
+/* NDP options size, in octets. */
+#define NDPOPT_LINKLAYER_LEN 8
+#define NDPOPT_PREFIXINFO_LEN 32
+#define NDPOPT_RDNSS_LEN 24
+
+/*
+ * Definition of type and code field values.
+ * Per https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xml
+ * Last Updated 2012-11-12
+ */
+
+/* Errors */
+#define ICMP6_UNREACH 1 /* Destination Unreachable */
+#define ICMP6_UNREACH_NO_ROUTE 0 /* no route to dest */
+#define ICMP6_UNREACH_DEST_PROHIB 1 /* com with dest prohibited */
+#define ICMP6_UNREACH_SCOPE 2 /* beyond scope of src addr */
+#define ICMP6_UNREACH_ADDRESS 3 /* address unreachable */
+#define ICMP6_UNREACH_PORT 4 /* port unreachable */
+#define ICMP6_UNREACH_SRC_FAIL 5 /* src addr failed */
+#define ICMP6_UNREACH_REJECT_ROUTE 6 /* reject route to dest */
+#define ICMP6_UNREACH_SRC_HDR_ERROR 7 /* error in src routing header */
+#define ICMP6_TOOBIG 2 /* Packet Too Big */
+#define ICMP6_TIMXCEED 3 /* Time Exceeded */
+#define ICMP6_TIMXCEED_INTRANS 0 /* hop limit exceeded in transit */
+#define ICMP6_TIMXCEED_REASS 1 /* ttl=0 in reass */
+#define ICMP6_PARAMPROB 4 /* Parameter Problem */
+#define ICMP6_PARAMPROB_HDR_FIELD 0 /* err header field */
+#define ICMP6_PARAMPROB_NXTHDR_TYPE 1 /* unrecognized Next Header type */
+#define ICMP6_PARAMPROB_IPV6_OPT 2 /* unrecognized IPv6 option */
+
+/* Informational Messages */
+#define ICMP6_ECHO_REQUEST 128 /* Echo Request */
+#define ICMP6_ECHO_REPLY 129 /* Echo Reply */
+#define ICMP6_NDP_RS 133 /* Router Solicitation (NDP) */
+#define ICMP6_NDP_RA 134 /* Router Advertisement (NDP) */
+#define ICMP6_NDP_NS 135 /* Neighbor Solicitation (NDP) */
+#define ICMP6_NDP_NA 136 /* Neighbor Advertisement (NDP) */
+#define ICMP6_NDP_REDIRECT 137 /* Redirect Message (NDP) */
+
+/*
+ * Router Configuration Variables (rfc4861#section-6)
+ */
+#define NDP_IsRouter 1
+#define NDP_AdvSendAdvertisements 1
+#define NDP_MaxRtrAdvInterval 600000
+#define NDP_MinRtrAdvInterval ((NDP_MaxRtrAdvInterval >= 9) ? \
+ NDP_MaxRtrAdvInterval / 3 : \
+ NDP_MaxRtrAdvInterval)
+#define NDP_AdvManagedFlag 0
+#define NDP_AdvOtherConfigFlag 0
+#define NDP_AdvLinkMTU 0
+#define NDP_AdvReachableTime 0
+#define NDP_AdvRetransTime 0
+#define NDP_AdvCurHopLimit 64
+#define NDP_AdvDefaultLifetime ((3 * NDP_MaxRtrAdvInterval) / 1000)
+#define NDP_AdvValidLifetime 86400
+#define NDP_AdvOnLinkFlag 1
+#define NDP_AdvPrefLifetime 14400
+#define NDP_AdvAutonomousFlag 1
+
+void icmp6_init(Slirp *slirp);
+void icmp6_cleanup(Slirp *slirp);
+void icmp6_input(struct mbuf *);
+void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code);
+void ndp_send_ra(Slirp *slirp);
+void ndp_send_ns(Slirp *slirp, struct in6_addr addr);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#include "slirp.h"
+#include "ip6_icmp.h"
+
+/*
+ * IP initialization: fill in IP protocol switch table.
+ * All protocols not implemented in kernel go to raw IP protocol handler.
+ */
+void ip6_init(Slirp *slirp)
+{
+ icmp6_init(slirp);
+}
+
+void ip6_cleanup(Slirp *slirp)
+{
+ icmp6_cleanup(slirp);
+}
+
+void ip6_input(struct mbuf *m)
+{
+ struct ip6 *ip6;
+ Slirp *slirp = m->slirp;
+
+ if (!slirp->in6_enabled) {
+ goto bad;
+ }
+
+ DEBUG_CALL("ip6_input");
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("m_len = %d", m->m_len);
+
+ if (m->m_len < sizeof(struct ip6)) {
+ goto bad;
+ }
+
+ ip6 = mtod(m, struct ip6 *);
+
+ if (ip6->ip_v != IP6VERSION) {
+ goto bad;
+ }
+
+ if (ntohs(ip6->ip_pl) > IF_MTU) {
+ icmp6_send_error(m, ICMP6_TOOBIG, 0);
+ goto bad;
+ }
+
+ /* check ip_ttl for a correct ICMP reply */
+ if (ip6->ip_hl == 0) {
+ icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
+ goto bad;
+ }
+
+ /*
+ * Switch out to protocol's input routine.
+ */
+ switch (ip6->ip_nh) {
+ case IPPROTO_TCP:
+ NTOHS(ip6->ip_pl);
+ tcp_input(m, sizeof(struct ip6), (struct socket *)NULL, AF_INET6);
+ break;
+ case IPPROTO_UDP:
+ udp6_input(m);
+ break;
+ case IPPROTO_ICMPV6:
+ icmp6_input(m);
+ break;
+ default:
+ m_free(m);
+ }
+ return;
+bad:
+ m_free(m);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#include "slirp.h"
+
+/* Number of packets queued before we start sending
+ * (to prevent allocing too many mbufs) */
+#define IF6_THRESH 10
+
+/*
+ * IPv6 output. The packet in mbuf chain m contains a IP header
+ */
+int ip6_output(struct socket *so, struct mbuf *m, int fast)
+{
+ struct ip6 *ip = mtod(m, struct ip6 *);
+
+ DEBUG_CALL("ip6_output");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+
+ /* Fill IPv6 header */
+ ip->ip_v = IP6VERSION;
+ ip->ip_hl = IP6_HOP_LIMIT;
+ ip->ip_tc_hi = 0;
+ ip->ip_tc_lo = 0;
+ ip->ip_fl_hi = 0;
+ ip->ip_fl_lo = 0;
+
+ if (fast) {
+ if_encap(m->slirp, m);
+ } else {
+ if_output(so, m);
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94
+ * ip_icmp.c,v 1.7 1995/05/30 08:09:42 rgrimes Exp
+ */
+
+#include "slirp.h"
+#include "ip_icmp.h"
+
+#ifndef WITH_ICMP_ERROR_MSG
+#define WITH_ICMP_ERROR_MSG 0
+#endif
+
+/* The message sent when emulating PING */
+/* Be nice and tell them it's just a pseudo-ping packet */
+static const char icmp_ping_msg[] = "This is a pseudo-PING packet used by Slirp to emulate ICMP ECHO-REQUEST packets.\n";
+
+/* list of actions for icmp_send_error() on RX of an icmp message */
+static const int icmp_flush[19] = {
+/* ECHO REPLY (0) */ 0,
+ 1,
+ 1,
+/* DEST UNREACH (3) */ 1,
+/* SOURCE QUENCH (4)*/ 1,
+/* REDIRECT (5) */ 1,
+ 1,
+ 1,
+/* ECHO (8) */ 0,
+/* ROUTERADVERT (9) */ 1,
+/* ROUTERSOLICIT (10) */ 1,
+/* TIME EXCEEDED (11) */ 1,
+/* PARAMETER PROBLEM (12) */ 1,
+/* TIMESTAMP (13) */ 0,
+/* TIMESTAMP REPLY (14) */ 0,
+/* INFO (15) */ 0,
+/* INFO REPLY (16) */ 0,
+/* ADDR MASK (17) */ 0,
+/* ADDR MASK REPLY (18) */ 0
+};
+
+void icmp_init(Slirp *slirp)
+{
+ slirp->icmp.so_next = slirp->icmp.so_prev = &slirp->icmp;
+ slirp->icmp_last_so = &slirp->icmp;
+}
+
+void icmp_cleanup(Slirp *slirp)
+{
+ while (slirp->icmp.so_next != &slirp->icmp) {
+ icmp_detach(slirp->icmp.so_next);
+ }
+}
+
+static int icmp_send(struct socket *so, struct mbuf *m, int hlen)
+{
+ struct ip *ip = mtod(m, struct ip *);
+ struct sockaddr_in addr;
+
+ so->s = slirp_socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP);
+ if (so->s == -1) {
+ return -1;
+ }
+
+ so->so_m = m;
+ so->so_faddr = ip->ip_dst;
+ so->so_laddr = ip->ip_src;
+ so->so_iptos = ip->ip_tos;
+ so->so_type = IPPROTO_ICMP;
+ so->so_state = SS_ISFCONNECTED;
+ so->so_expire = curtime + SO_EXPIRE;
+
+ addr.sin_family = AF_INET;
+ addr.sin_addr = so->so_faddr;
+
+ insque(so, &so->slirp->icmp);
+
+ if (sendto(so->s, m->m_data + hlen, m->m_len - hlen, 0,
+ (struct sockaddr *)&addr, sizeof(addr)) == -1) {
+ DEBUG_MISC("icmp_input icmp sendto tx errno = %d-%s",
+ errno, strerror(errno));
+ icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
+ icmp_detach(so);
+ }
+
+ return 0;
+}
+
+void icmp_detach(struct socket *so)
+{
+ so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
+ closesocket(so->s);
+ sofree(so);
+}
+
+/*
+ * Process a received ICMP message.
+ */
+void
+icmp_input(struct mbuf *m, int hlen)
+{
+ register struct icmp *icp;
+ register struct ip *ip=mtod(m, struct ip *);
+ int icmplen=ip->ip_len;
+ Slirp *slirp = m->slirp;
+
+ DEBUG_CALL("icmp_input");
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("m_len = %d", m->m_len);
+
+ /*
+ * Locate icmp structure in mbuf, and check
+ * that its not corrupted and of at least minimum length.
+ */
+ if (icmplen < ICMP_MINLEN) { /* min 8 bytes payload */
+ freeit:
+ m_free(m);
+ goto end_error;
+ }
+
+ m->m_len -= hlen;
+ m->m_data += hlen;
+ icp = mtod(m, struct icmp *);
+ if (cksum(m, icmplen)) {
+ goto freeit;
+ }
+ m->m_len += hlen;
+ m->m_data -= hlen;
+
+ DEBUG_ARG("icmp_type = %d", icp->icmp_type);
+ switch (icp->icmp_type) {
+ case ICMP_ECHO:
+ ip->ip_len += hlen; /* since ip_input subtracts this */
+ if (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
+ ip->ip_dst.s_addr == slirp->vnameserver_addr.s_addr) {
+ icmp_reflect(m);
+ } else if (slirp->restricted) {
+ goto freeit;
+ } else {
+ struct socket *so;
+ struct sockaddr_storage addr;
+ so = socreate(slirp);
+ if (icmp_send(so, m, hlen) == 0) {
+ return;
+ }
+ if (udp_attach(so, AF_INET) == -1) {
+ DEBUG_MISC("icmp_input udp_attach errno = %d-%s",
+ errno,strerror(errno));
+ sofree(so);
+ m_free(m);
+ goto end_error;
+ }
+ so->so_m = m;
+ so->so_ffamily = AF_INET;
+ so->so_faddr = ip->ip_dst;
+ so->so_fport = htons(7);
+ so->so_lfamily = AF_INET;
+ so->so_laddr = ip->ip_src;
+ so->so_lport = htons(9);
+ so->so_iptos = ip->ip_tos;
+ so->so_type = IPPROTO_ICMP;
+ so->so_state = SS_ISFCONNECTED;
+
+ /* Send the packet */
+ addr = so->fhost.ss;
+ sotranslate_out(so, &addr);
+
+ if(sendto(so->s, icmp_ping_msg, strlen(icmp_ping_msg), 0,
+ (struct sockaddr *)&addr, sockaddr_size(&addr)) == -1) {
+ DEBUG_MISC("icmp_input udp sendto tx errno = %d-%s",
+ errno,strerror(errno));
+ icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
+ udp_detach(so);
+ }
+ } /* if ip->ip_dst.s_addr == alias_addr.s_addr */
+ break;
+ case ICMP_UNREACH:
+ /* XXX? report error? close socket? */
+ case ICMP_TIMXCEED:
+ case ICMP_PARAMPROB:
+ case ICMP_SOURCEQUENCH:
+ case ICMP_TSTAMP:
+ case ICMP_MASKREQ:
+ case ICMP_REDIRECT:
+ m_free(m);
+ break;
+
+ default:
+ m_free(m);
+ } /* swith */
+
+end_error:
+ /* m is m_free()'d xor put in a socket xor or given to ip_send */
+ return;
+}
+
+
+/*
+ * Send an ICMP message in response to a situation
+ *
+ * RFC 1122: 3.2.2 MUST send at least the IP header and 8 bytes of header. MAY send more (we do).
+ * MUST NOT change this header information.
+ * MUST NOT reply to a multicast/broadcast IP address.
+ * MUST NOT reply to a multicast/broadcast MAC address.
+ * MUST reply to only the first fragment.
+ */
+/*
+ * Send ICMP_UNREACH back to the source regarding msrc.
+ * mbuf *msrc is used as a template, but is NOT m_free()'d.
+ * It is reported as the bad ip packet. The header should
+ * be fully correct and in host byte order.
+ * ICMP fragmentation is illegal. All machines must accept 576 bytes in one
+ * packet. The maximum payload is 576-20(ip hdr)-8(icmp hdr)=548
+ */
+
+#define ICMP_MAXDATALEN (IP_MSS-28)
+void
+icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize,
+ const char *message)
+{
+ unsigned hlen, shlen, s_ip_len;
+ register struct ip *ip;
+ register struct icmp *icp;
+ register struct mbuf *m;
+
+ DEBUG_CALL("icmp_send_error");
+ DEBUG_ARG("msrc = %p", msrc);
+ DEBUG_ARG("msrc_len = %d", msrc->m_len);
+
+ if(type!=ICMP_UNREACH && type!=ICMP_TIMXCEED) goto end_error;
+
+ /* check msrc */
+ if(!msrc) goto end_error;
+ ip = mtod(msrc, struct ip *);
+ if (slirp_debug & DBG_MISC) {
+ char bufa[20], bufb[20];
+ strcpy(bufa, inet_ntoa(ip->ip_src));
+ strcpy(bufb, inet_ntoa(ip->ip_dst));
+ DEBUG_MISC(" %.16s to %.16s", bufa, bufb);
+ }
+ if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */
+
+ /* Do not reply to source-only IPs */
+ if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) {
+ goto end_error;
+ }
+
+ shlen=ip->ip_hl << 2;
+ s_ip_len=ip->ip_len;
+ if(ip->ip_p == IPPROTO_ICMP) {
+ icp = (struct icmp *)((char *)ip + shlen);
+ /*
+ * Assume any unknown ICMP type is an error. This isn't
+ * specified by the RFC, but think about it..
+ */
+ if(icp->icmp_type>18 || icmp_flush[icp->icmp_type]) goto end_error;
+ }
+
+ /* make a copy */
+ m = m_get(msrc->slirp);
+ if (!m) {
+ goto end_error;
+ }
+
+ { int new_m_size;
+ new_m_size=sizeof(struct ip )+ICMP_MINLEN+msrc->m_len+ICMP_MAXDATALEN;
+ if(new_m_size>m->m_size) m_inc(m, new_m_size);
+ }
+ memcpy(m->m_data, msrc->m_data, msrc->m_len);
+ m->m_len = msrc->m_len; /* copy msrc to m */
+
+ /* make the header of the reply packet */
+ ip = mtod(m, struct ip *);
+ hlen= sizeof(struct ip ); /* no options in reply */
+
+ /* fill in icmp */
+ m->m_data += hlen;
+ m->m_len -= hlen;
+
+ icp = mtod(m, struct icmp *);
+
+ if(minsize) s_ip_len=shlen+ICMP_MINLEN; /* return header+8b only */
+ else if(s_ip_len>ICMP_MAXDATALEN) /* maximum size */
+ s_ip_len=ICMP_MAXDATALEN;
+
+ m->m_len=ICMP_MINLEN+s_ip_len; /* 8 bytes ICMP header */
+
+ /* min. size = 8+sizeof(struct ip)+8 */
+
+ icp->icmp_type = type;
+ icp->icmp_code = code;
+ icp->icmp_id = 0;
+ icp->icmp_seq = 0;
+
+ memcpy(&icp->icmp_ip, msrc->m_data, s_ip_len); /* report the ip packet */
+ HTONS(icp->icmp_ip.ip_len);
+ HTONS(icp->icmp_ip.ip_id);
+ HTONS(icp->icmp_ip.ip_off);
+
+ if (message && WITH_ICMP_ERROR_MSG) { /* append message to ICMP packet */
+ int message_len;
+ char *cpnt;
+ message_len=strlen(message);
+ if(message_len>ICMP_MAXDATALEN) message_len=ICMP_MAXDATALEN;
+ cpnt=(char *)m->m_data+m->m_len;
+ memcpy(cpnt, message, message_len);
+ m->m_len+=message_len;
+ }
+
+ icp->icmp_cksum = 0;
+ icp->icmp_cksum = cksum(m, m->m_len);
+
+ m->m_data -= hlen;
+ m->m_len += hlen;
+
+ /* fill in ip */
+ ip->ip_hl = hlen >> 2;
+ ip->ip_len = m->m_len;
+
+ ip->ip_tos=((ip->ip_tos & 0x1E) | 0xC0); /* high priority for errors */
+
+ ip->ip_ttl = MAXTTL;
+ ip->ip_p = IPPROTO_ICMP;
+ ip->ip_dst = ip->ip_src; /* ip addresses */
+ ip->ip_src = m->slirp->vhost_addr;
+
+ (void ) ip_output((struct socket *)NULL, m);
+
+end_error:
+ return;
+}
+#undef ICMP_MAXDATALEN
+
+/*
+ * Reflect the ip packet back to the source
+ */
+void
+icmp_reflect(struct mbuf *m)
+{
+ register struct ip *ip = mtod(m, struct ip *);
+ int hlen = ip->ip_hl << 2;
+ int optlen = hlen - sizeof(struct ip );
+ register struct icmp *icp;
+
+ /*
+ * Send an icmp packet back to the ip level,
+ * after supplying a checksum.
+ */
+ m->m_data += hlen;
+ m->m_len -= hlen;
+ icp = mtod(m, struct icmp *);
+
+ icp->icmp_type = ICMP_ECHOREPLY;
+ icp->icmp_cksum = 0;
+ icp->icmp_cksum = cksum(m, ip->ip_len - hlen);
+
+ m->m_data -= hlen;
+ m->m_len += hlen;
+
+ /* fill in ip */
+ if (optlen > 0) {
+ /*
+ * Strip out original options by copying rest of first
+ * mbuf's data back, and adjust the IP length.
+ */
+ memmove((char *)(ip + 1), (char *)ip + hlen,
+ (unsigned )(m->m_len - hlen));
+ hlen -= optlen;
+ ip->ip_hl = hlen >> 2;
+ ip->ip_len -= optlen;
+ m->m_len -= optlen;
+ }
+
+ ip->ip_ttl = MAXTTL;
+ { /* swap */
+ struct in_addr icmp_dst;
+ icmp_dst = ip->ip_dst;
+ ip->ip_dst = ip->ip_src;
+ ip->ip_src = icmp_dst;
+ }
+
+ (void ) ip_output((struct socket *)NULL, m);
+}
+
+void icmp_receive(struct socket *so)
+{
+ struct mbuf *m = so->so_m;
+ struct ip *ip = mtod(m, struct ip *);
+ int hlen = ip->ip_hl << 2;
+ uint8_t error_code;
+ struct icmp *icp;
+ int id, len;
+
+ m->m_data += hlen;
+ m->m_len -= hlen;
+ icp = mtod(m, struct icmp *);
+
+ id = icp->icmp_id;
+ len = recv(so->s, icp, M_ROOM(m), 0);
+ /*
+ * The behavior of reading SOCK_DGRAM+IPPROTO_ICMP sockets is inconsistent
+ * between host OSes. On Linux, only the ICMP header and payload is
+ * included. On macOS/Darwin, the socket acts like a raw socket and
+ * includes the IP header as well. On other BSDs, SOCK_DGRAM+IPPROTO_ICMP
+ * sockets aren't supported at all, so we treat them like raw sockets. It
+ * isn't possible to detect this difference at runtime, so we must use an
+ * #ifdef to determine if we need to remove the IP header.
+ */
+#ifdef CONFIG_BSD
+ if (len >= sizeof(struct ip)) {
+ struct ip *inner_ip = mtod(m, struct ip *);
+ int inner_hlen = inner_ip->ip_hl << 2;
+ if (inner_hlen > len) {
+ len = -1;
+ errno = -EINVAL;
+ } else {
+ len -= inner_hlen;
+ memmove(icp, (unsigned char *)icp + inner_hlen, len);
+ }
+ } else {
+ len = -1;
+ errno = -EINVAL;
+ }
+#endif
+ icp->icmp_id = id;
+
+ m->m_data -= hlen;
+ m->m_len += hlen;
+
+ if (len == -1 || len == 0) {
+ if (errno == ENETUNREACH) {
+ error_code = ICMP_UNREACH_NET;
+ } else {
+ error_code = ICMP_UNREACH_HOST;
+ }
+ DEBUG_MISC(" udp icmp rx errno = %d-%s", errno,
+ strerror(errno));
+ icmp_send_error(so->so_m, ICMP_UNREACH, error_code, 0, strerror(errno));
+ } else {
+ icmp_reflect(so->so_m);
+ so->so_m = NULL; /* Don't m_free() it again! */
+ }
+ icmp_detach(so);
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
+ * ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp
+ */
+
+#ifndef NETINET_IP_ICMP_H
+#define NETINET_IP_ICMP_H
+
+/*
+ * Interface Control Message Protocol Definitions.
+ * Per RFC 792, September 1981.
+ */
+
+typedef uint32_t n_time;
+
+/*
+ * Structure of an icmp header.
+ */
+struct icmp {
+ uint8_t icmp_type; /* type of message, see below */
+ uint8_t icmp_code; /* type sub code */
+ uint16_t icmp_cksum; /* ones complement cksum of struct */
+ union {
+ uint8_t ih_pptr; /* ICMP_PARAMPROB */
+ struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
+ struct ih_idseq {
+ uint16_t icd_id;
+ uint16_t icd_seq;
+ } ih_idseq;
+ int ih_void;
+
+ /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
+ struct ih_pmtu {
+ uint16_t ipm_void;
+ uint16_t ipm_nextmtu;
+ } ih_pmtu;
+ } icmp_hun;
+#define icmp_pptr icmp_hun.ih_pptr
+#define icmp_gwaddr icmp_hun.ih_gwaddr
+#define icmp_id icmp_hun.ih_idseq.icd_id
+#define icmp_seq icmp_hun.ih_idseq.icd_seq
+#define icmp_void icmp_hun.ih_void
+#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
+#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
+ union {
+ struct id_ts {
+ n_time its_otime;
+ n_time its_rtime;
+ n_time its_ttime;
+ } id_ts;
+ struct id_ip {
+ struct ip idi_ip;
+ /* options and then 64 bits of data */
+ } id_ip;
+ uint32_t id_mask;
+ char id_data[1];
+ } icmp_dun;
+#define icmp_otime icmp_dun.id_ts.its_otime
+#define icmp_rtime icmp_dun.id_ts.its_rtime
+#define icmp_ttime icmp_dun.id_ts.its_ttime
+#define icmp_ip icmp_dun.id_ip.idi_ip
+#define icmp_mask icmp_dun.id_mask
+#define icmp_data icmp_dun.id_data
+};
+
+/*
+ * Lower bounds on packet lengths for various types.
+ * For the error advice packets must first ensure that the
+ * packet is large enough to contain the returned ip header.
+ * Only then can we do the check to see if 64 bits of packet
+ * data have been returned, since we need to check the returned
+ * ip header length.
+ */
+#define ICMP_MINLEN 8 /* abs minimum */
+#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
+#define ICMP_MASKLEN 12 /* address mask */
+#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
+#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
+ /* N.B.: must separately check that ip_hl >= 5 */
+
+/*
+ * Definition of type and code field values.
+ */
+#define ICMP_ECHOREPLY 0 /* echo reply */
+#define ICMP_UNREACH 3 /* dest unreachable, codes: */
+#define ICMP_UNREACH_NET 0 /* bad net */
+#define ICMP_UNREACH_HOST 1 /* bad host */
+#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
+#define ICMP_UNREACH_PORT 3 /* bad port */
+#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
+#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
+#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
+#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
+#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
+#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
+#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
+#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
+#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
+#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
+#define ICMP_REDIRECT 5 /* shorter route, codes: */
+#define ICMP_REDIRECT_NET 0 /* for network */
+#define ICMP_REDIRECT_HOST 1 /* for host */
+#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
+#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
+#define ICMP_ECHO 8 /* echo service */
+#define ICMP_ROUTERADVERT 9 /* router advertisement */
+#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
+#define ICMP_TIMXCEED 11 /* time exceeded, code: */
+#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
+#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
+#define ICMP_PARAMPROB 12 /* ip header bad */
+#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
+#define ICMP_TSTAMP 13 /* timestamp request */
+#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
+#define ICMP_IREQ 15 /* information request */
+#define ICMP_IREQREPLY 16 /* information reply */
+#define ICMP_MASKREQ 17 /* address mask request */
+#define ICMP_MASKREPLY 18 /* address mask reply */
+
+#define ICMP_MAXTYPE 18
+
+#define ICMP_INFOTYPE(type) \
+ ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
+ (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
+ (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
+ (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
+ (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
+
+void icmp_init(Slirp *slirp);
+void icmp_cleanup(Slirp *slirp);
+void icmp_input(struct mbuf *, int);
+void icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize,
+ const char *message);
+void icmp_reflect(struct mbuf *);
+void icmp_receive(struct socket *so);
+void icmp_detach(struct socket *so);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ip_input.c 8.2 (Berkeley) 1/4/94
+ * ip_input.c,v 1.11 1994/11/16 10:17:08 jkh Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP are
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+#include "ip_icmp.h"
+
+static struct ip *ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp);
+static void ip_freef(Slirp *slirp, struct ipq *fp);
+static void ip_enq(register struct ipasfrag *p,
+ register struct ipasfrag *prev);
+static void ip_deq(register struct ipasfrag *p);
+
+/*
+ * IP initialization: fill in IP protocol switch table.
+ * All protocols not implemented in kernel go to raw IP protocol handler.
+ */
+void
+ip_init(Slirp *slirp)
+{
+ slirp->ipq.ip_link.next = slirp->ipq.ip_link.prev = &slirp->ipq.ip_link;
+ udp_init(slirp);
+ tcp_init(slirp);
+ icmp_init(slirp);
+}
+
+void ip_cleanup(Slirp *slirp)
+{
+ udp_cleanup(slirp);
+ tcp_cleanup(slirp);
+ icmp_cleanup(slirp);
+}
+
+/*
+ * Ip input routine. Checksum and byte swap header. If fragmented
+ * try to reassemble. Process options. Pass to next level.
+ */
+void
+ip_input(struct mbuf *m)
+{
+ Slirp *slirp = m->slirp;
+ register struct ip *ip;
+ int hlen;
+
+ if (!slirp->in_enabled) {
+ goto bad;
+ }
+
+ DEBUG_CALL("ip_input");
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("m_len = %d", m->m_len);
+
+ if (m->m_len < sizeof (struct ip)) {
+ goto bad;
+ }
+
+ ip = mtod(m, struct ip *);
+
+ if (ip->ip_v != IPVERSION) {
+ goto bad;
+ }
+
+ hlen = ip->ip_hl << 2;
+ if (hlen<sizeof(struct ip ) || hlen>m->m_len) {/* min header length */
+ goto bad; /* or packet too short */
+ }
+
+ /* keep ip header intact for ICMP reply
+ * ip->ip_sum = cksum(m, hlen);
+ * if (ip->ip_sum) {
+ */
+ if(cksum(m,hlen)) {
+ goto bad;
+ }
+
+ /*
+ * Convert fields to host representation.
+ */
+ NTOHS(ip->ip_len);
+ if (ip->ip_len < hlen) {
+ goto bad;
+ }
+ NTOHS(ip->ip_id);
+ NTOHS(ip->ip_off);
+
+ /*
+ * Check that the amount of data in the buffers
+ * is as at least much as the IP header would have us expect.
+ * Trim mbufs if longer than we expect.
+ * Drop packet if shorter than we expect.
+ */
+ if (m->m_len < ip->ip_len) {
+ goto bad;
+ }
+
+ /* Should drop packet if mbuf too long? hmmm... */
+ if (m->m_len > ip->ip_len)
+ m_adj(m, ip->ip_len - m->m_len);
+
+ /* check ip_ttl for a correct ICMP reply */
+ if (ip->ip_ttl == 0) {
+ icmp_send_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, 0, "ttl");
+ goto bad;
+ }
+
+ /*
+ * If offset or IP_MF are set, must reassemble.
+ * Otherwise, nothing need be done.
+ * (We could look in the reassembly queue to see
+ * if the packet was previously fragmented,
+ * but it's not worth the time; just let them time out.)
+ *
+ * XXX This should fail, don't fragment yet
+ */
+ if (ip->ip_off &~ IP_DF) {
+ register struct ipq *fp;
+ struct qlink *l;
+ /*
+ * Look for queue of fragments
+ * of this datagram.
+ */
+ for (l = slirp->ipq.ip_link.next; l != &slirp->ipq.ip_link;
+ l = l->next) {
+ fp = container_of(l, struct ipq, ip_link);
+ if (ip->ip_id == fp->ipq_id &&
+ ip->ip_src.s_addr == fp->ipq_src.s_addr &&
+ ip->ip_dst.s_addr == fp->ipq_dst.s_addr &&
+ ip->ip_p == fp->ipq_p)
+ goto found;
+ }
+ fp = NULL;
+ found:
+
+ /*
+ * Adjust ip_len to not reflect header,
+ * set ip_mff if more fragments are expected,
+ * convert offset of this to bytes.
+ */
+ ip->ip_len -= hlen;
+ if (ip->ip_off & IP_MF)
+ ip->ip_tos |= 1;
+ else
+ ip->ip_tos &= ~1;
+
+ ip->ip_off <<= 3;
+
+ /*
+ * If datagram marked as having more fragments
+ * or if this is not the first fragment,
+ * attempt reassembly; if it succeeds, proceed.
+ */
+ if (ip->ip_tos & 1 || ip->ip_off) {
+ ip = ip_reass(slirp, ip, fp);
+ if (ip == NULL)
+ return;
+ m = dtom(slirp, ip);
+ } else
+ if (fp)
+ ip_freef(slirp, fp);
+
+ } else
+ ip->ip_len -= hlen;
+
+ /*
+ * Switch out to protocol's input routine.
+ */
+ switch (ip->ip_p) {
+ case IPPROTO_TCP:
+ tcp_input(m, hlen, (struct socket *)NULL, AF_INET);
+ break;
+ case IPPROTO_UDP:
+ udp_input(m, hlen);
+ break;
+ case IPPROTO_ICMP:
+ icmp_input(m, hlen);
+ break;
+ default:
+ m_free(m);
+ }
+ return;
+bad:
+ m_free(m);
+}
+
+#define iptofrag(P) ((struct ipasfrag *)(((char*)(P)) - sizeof(struct qlink)))
+#define fragtoip(P) ((struct ip*)(((char*)(P)) + sizeof(struct qlink)))
+/*
+ * Take incoming datagram fragment and try to
+ * reassemble it into whole datagram. If a chain for
+ * reassembly of this datagram already exists, then it
+ * is given as fp; otherwise have to make a chain.
+ */
+static struct ip *
+ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp)
+{
+ register struct mbuf *m = dtom(slirp, ip);
+ register struct ipasfrag *q;
+ int hlen = ip->ip_hl << 2;
+ int i, next;
+
+ DEBUG_CALL("ip_reass");
+ DEBUG_ARG("ip = %p", ip);
+ DEBUG_ARG("fp = %p", fp);
+ DEBUG_ARG("m = %p", m);
+
+ /*
+ * Presence of header sizes in mbufs
+ * would confuse code below.
+ * Fragment m_data is concatenated.
+ */
+ m->m_data += hlen;
+ m->m_len -= hlen;
+
+ /*
+ * If first fragment to arrive, create a reassembly queue.
+ */
+ if (fp == NULL) {
+ struct mbuf *t = m_get(slirp);
+
+ if (t == NULL) {
+ goto dropfrag;
+ }
+ fp = mtod(t, struct ipq *);
+ insque(&fp->ip_link, &slirp->ipq.ip_link);
+ fp->ipq_ttl = IPFRAGTTL;
+ fp->ipq_p = ip->ip_p;
+ fp->ipq_id = ip->ip_id;
+ fp->frag_link.next = fp->frag_link.prev = &fp->frag_link;
+ fp->ipq_src = ip->ip_src;
+ fp->ipq_dst = ip->ip_dst;
+ q = (struct ipasfrag *)fp;
+ goto insert;
+ }
+
+ /*
+ * Find a segment which begins after this one does.
+ */
+ for (q = fp->frag_link.next; q != (struct ipasfrag *)&fp->frag_link;
+ q = q->ipf_next)
+ if (q->ipf_off > ip->ip_off)
+ break;
+
+ /*
+ * If there is a preceding segment, it may provide some of
+ * our data already. If so, drop the data from the incoming
+ * segment. If it provides all of our data, drop us.
+ */
+ if (q->ipf_prev != &fp->frag_link) {
+ struct ipasfrag *pq = q->ipf_prev;
+ i = pq->ipf_off + pq->ipf_len - ip->ip_off;
+ if (i > 0) {
+ if (i >= ip->ip_len)
+ goto dropfrag;
+ m_adj(dtom(slirp, ip), i);
+ ip->ip_off += i;
+ ip->ip_len -= i;
+ }
+ }
+
+ /*
+ * While we overlap succeeding segments trim them or,
+ * if they are completely covered, dequeue them.
+ */
+ while (q != (struct ipasfrag*)&fp->frag_link &&
+ ip->ip_off + ip->ip_len > q->ipf_off) {
+ i = (ip->ip_off + ip->ip_len) - q->ipf_off;
+ if (i < q->ipf_len) {
+ q->ipf_len -= i;
+ q->ipf_off += i;
+ m_adj(dtom(slirp, q), i);
+ break;
+ }
+ q = q->ipf_next;
+ m_free(dtom(slirp, q->ipf_prev));
+ ip_deq(q->ipf_prev);
+ }
+
+insert:
+ /*
+ * Stick new segment in its place;
+ * check for complete reassembly.
+ */
+ ip_enq(iptofrag(ip), q->ipf_prev);
+ next = 0;
+ for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link;
+ q = q->ipf_next) {
+ if (q->ipf_off != next)
+ return NULL;
+ next += q->ipf_len;
+ }
+ if (((struct ipasfrag *)(q->ipf_prev))->ipf_tos & 1)
+ return NULL;
+
+ /*
+ * Reassembly is complete; concatenate fragments.
+ */
+ q = fp->frag_link.next;
+ m = dtom(slirp, q);
+
+ q = (struct ipasfrag *) q->ipf_next;
+ while (q != (struct ipasfrag*)&fp->frag_link) {
+ struct mbuf *t = dtom(slirp, q);
+ q = (struct ipasfrag *) q->ipf_next;
+ m_cat(m, t);
+ }
+
+ /*
+ * Create header for new ip packet by
+ * modifying header of first packet;
+ * dequeue and discard fragment reassembly header.
+ * Make header visible.
+ */
+ q = fp->frag_link.next;
+
+ /*
+ * If the fragments concatenated to an mbuf that's
+ * bigger than the total size of the fragment, then and
+ * m_ext buffer was alloced. But fp->ipq_next points to
+ * the old buffer (in the mbuf), so we must point ip
+ * into the new buffer.
+ */
+ if (m->m_flags & M_EXT) {
+ int delta = (char *)q - m->m_dat;
+ q = (struct ipasfrag *)(m->m_ext + delta);
+ }
+
+ ip = fragtoip(q);
+ ip->ip_len = next;
+ ip->ip_tos &= ~1;
+ ip->ip_src = fp->ipq_src;
+ ip->ip_dst = fp->ipq_dst;
+ remque(&fp->ip_link);
+ (void) m_free(dtom(slirp, fp));
+ m->m_len += (ip->ip_hl << 2);
+ m->m_data -= (ip->ip_hl << 2);
+
+ return ip;
+
+dropfrag:
+ m_free(m);
+ return NULL;
+}
+
+/*
+ * Free a fragment reassembly header and all
+ * associated datagrams.
+ */
+static void
+ip_freef(Slirp *slirp, struct ipq *fp)
+{
+ register struct ipasfrag *q, *p;
+
+ for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link; q = p) {
+ p = q->ipf_next;
+ ip_deq(q);
+ m_free(dtom(slirp, q));
+ }
+ remque(&fp->ip_link);
+ (void) m_free(dtom(slirp, fp));
+}
+
+/*
+ * Put an ip fragment on a reassembly chain.
+ * Like insque, but pointers in middle of structure.
+ */
+static void
+ip_enq(register struct ipasfrag *p, register struct ipasfrag *prev)
+{
+ DEBUG_CALL("ip_enq");
+ DEBUG_ARG("prev = %p", prev);
+ p->ipf_prev = prev;
+ p->ipf_next = prev->ipf_next;
+ ((struct ipasfrag *)(prev->ipf_next))->ipf_prev = p;
+ prev->ipf_next = p;
+}
+
+/*
+ * To ip_enq as remque is to insque.
+ */
+static void
+ip_deq(register struct ipasfrag *p)
+{
+ ((struct ipasfrag *)(p->ipf_prev))->ipf_next = p->ipf_next;
+ ((struct ipasfrag *)(p->ipf_next))->ipf_prev = p->ipf_prev;
+}
+
+/*
+ * IP timer processing;
+ * if a timer expires on a reassembly
+ * queue, discard it.
+ */
+void
+ip_slowtimo(Slirp *slirp)
+{
+ struct qlink *l;
+
+ DEBUG_CALL("ip_slowtimo");
+
+ l = slirp->ipq.ip_link.next;
+
+ if (l == NULL)
+ return;
+
+ while (l != &slirp->ipq.ip_link) {
+ struct ipq *fp = container_of(l, struct ipq, ip_link);
+ l = l->next;
+ if (--fp->ipq_ttl == 0) {
+ ip_freef(slirp, fp);
+ }
+ }
+}
+
+/*
+ * Strip out IP options, at higher
+ * level protocol in the kernel.
+ * Second argument is buffer to which options
+ * will be moved, and return value is their length.
+ * (XXX) should be deleted; last arg currently ignored.
+ */
+void
+ip_stripoptions(register struct mbuf *m, struct mbuf *mopt)
+{
+ register int i;
+ struct ip *ip = mtod(m, struct ip *);
+ register char *opts;
+ int olen;
+
+ olen = (ip->ip_hl<<2) - sizeof (struct ip);
+ opts = (char *)(ip + 1);
+ i = m->m_len - (sizeof (struct ip) + olen);
+ memcpy(opts, opts + olen, (unsigned)i);
+ m->m_len -= olen;
+
+ ip->ip_hl = sizeof(struct ip) >> 2;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ip_output.c 8.3 (Berkeley) 1/21/94
+ * ip_output.c,v 1.9 1994/11/16 10:17:10 jkh Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP are
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+/* Number of packets queued before we start sending
+ * (to prevent allocing too many mbufs) */
+#define IF_THRESH 10
+
+/*
+ * IP output. The packet in mbuf chain m contains a skeletal IP
+ * header (with len, off, ttl, proto, tos, src, dst).
+ * The mbuf chain containing the packet will be freed.
+ * The mbuf opt, if present, will not be freed.
+ */
+int
+ip_output(struct socket *so, struct mbuf *m0)
+{
+ Slirp *slirp = m0->slirp;
+ register struct ip *ip;
+ register struct mbuf *m = m0;
+ register int hlen = sizeof(struct ip );
+ int len, off, error = 0;
+
+ DEBUG_CALL("ip_output");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m0 = %p", m0);
+
+ ip = mtod(m, struct ip *);
+ /*
+ * Fill in IP header.
+ */
+ ip->ip_v = IPVERSION;
+ ip->ip_off &= IP_DF;
+ ip->ip_id = htons(slirp->ip_id++);
+ ip->ip_hl = hlen >> 2;
+
+ /*
+ * If small enough for interface, can just send directly.
+ */
+ if ((uint16_t)ip->ip_len <= IF_MTU) {
+ ip->ip_len = htons((uint16_t)ip->ip_len);
+ ip->ip_off = htons((uint16_t)ip->ip_off);
+ ip->ip_sum = 0;
+ ip->ip_sum = cksum(m, hlen);
+
+ if_output(so, m);
+ goto done;
+ }
+
+ /*
+ * Too large for interface; fragment if possible.
+ * Must be able to put at least 8 bytes per fragment.
+ */
+ if (ip->ip_off & IP_DF) {
+ error = -1;
+ goto bad;
+ }
+
+ len = (IF_MTU - hlen) &~ 7; /* ip databytes per packet */
+ if (len < 8) {
+ error = -1;
+ goto bad;
+ }
+
+ {
+ int mhlen, firstlen = len;
+ struct mbuf **mnext = &m->m_nextpkt;
+
+ /*
+ * Loop through length of segment after first fragment,
+ * make new header and copy data of each part and link onto chain.
+ */
+ m0 = m;
+ mhlen = sizeof (struct ip);
+ for (off = hlen + len; off < (uint16_t)ip->ip_len; off += len) {
+ register struct ip *mhip;
+ m = m_get(slirp);
+ if (m == NULL) {
+ error = -1;
+ goto sendorfree;
+ }
+ m->m_data += IF_MAXLINKHDR;
+ mhip = mtod(m, struct ip *);
+ *mhip = *ip;
+
+ m->m_len = mhlen;
+ mhip->ip_off = ((off - hlen) >> 3) + (ip->ip_off & ~IP_MF);
+ if (ip->ip_off & IP_MF)
+ mhip->ip_off |= IP_MF;
+ if (off + len >= (uint16_t)ip->ip_len)
+ len = (uint16_t)ip->ip_len - off;
+ else
+ mhip->ip_off |= IP_MF;
+ mhip->ip_len = htons((uint16_t)(len + mhlen));
+
+ if (m_copy(m, m0, off, len) < 0) {
+ error = -1;
+ goto sendorfree;
+ }
+
+ mhip->ip_off = htons((uint16_t)mhip->ip_off);
+ mhip->ip_sum = 0;
+ mhip->ip_sum = cksum(m, mhlen);
+ *mnext = m;
+ mnext = &m->m_nextpkt;
+ }
+ /*
+ * Update first fragment by trimming what's been copied out
+ * and updating header, then send each fragment (in order).
+ */
+ m = m0;
+ m_adj(m, hlen + firstlen - (uint16_t)ip->ip_len);
+ ip->ip_len = htons((uint16_t)m->m_len);
+ ip->ip_off = htons((uint16_t)(ip->ip_off | IP_MF));
+ ip->ip_sum = 0;
+ ip->ip_sum = cksum(m, hlen);
+sendorfree:
+ for (m = m0; m; m = m0) {
+ m0 = m->m_nextpkt;
+ m->m_nextpkt = NULL;
+ if (error == 0)
+ if_output(so, m);
+ else
+ m_free(m);
+ }
+ }
+
+done:
+ return (error);
+
+bad:
+ m_free(m0);
+ goto done;
+}
--- /dev/null
+#ifndef LIBSLIRP_H
+#define LIBSLIRP_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <sys/types.h>
+
+#ifdef _WIN32
+#include <winsock2.h>
+#include <in6addr.h>
+#else
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Slirp Slirp;
+
+enum {
+ SLIRP_POLL_IN = 1 << 0,
+ SLIRP_POLL_OUT = 1 << 1,
+ SLIRP_POLL_PRI = 1 << 2,
+ SLIRP_POLL_ERR = 1 << 3,
+ SLIRP_POLL_HUP = 1 << 4,
+};
+
+typedef ssize_t (*SlirpReadCb)(void *buf, size_t len, void *opaque);
+typedef ssize_t (*SlirpWriteCb)(const void *buf, size_t len, void *opaque);
+typedef void (*SlirpTimerCb)(void *opaque);
+typedef int (*SlirpAddPollCb)(int fd, int events, void *opaque);
+typedef int (*SlirpGetREventsCb)(int idx, void *opaque);
+
+/*
+ * Callbacks from slirp
+ */
+typedef struct SlirpCb {
+ /*
+ * Send an ethernet frame to the guest network. The opaque
+ * parameter is the one given to slirp_init(). The function
+ * doesn't need to send all the data and may return <len (no
+ * buffering is done on libslirp side, so the data will be dropped
+ * in this case). <0 reports an IO error.
+ */
+ SlirpWriteCb send_packet;
+ /* Print a message for an error due to guest misbehavior. */
+ void (*guest_error)(const char *msg, void *opaque);
+ /* Return the virtual clock value in nanoseconds */
+ int64_t (*clock_get_ns)(void *opaque);
+ /* Create a new timer with the given callback and opaque data */
+ void *(*timer_new)(SlirpTimerCb cb, void *cb_opaque, void *opaque);
+ /* Remove and free a timer */
+ void (*timer_free)(void *timer, void *opaque);
+ /* Modify a timer to expire at @expire_time */
+ void (*timer_mod)(void *timer, int64_t expire_time, void *opaque);
+ /* Register a fd for future polling */
+ void (*register_poll_fd)(int fd, void *opaque);
+ /* Unregister a fd */
+ void (*unregister_poll_fd)(int fd, void *opaque);
+ /* Kick the io-thread, to signal that new events may be processed */
+ void (*notify)(void *opaque);
+} SlirpCb;
+
+
+Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
+ struct in_addr vnetmask, struct in_addr vhost,
+ bool in6_enabled,
+ struct in6_addr vprefix_addr6, uint8_t vprefix_len,
+ struct in6_addr vhost6, const char *vhostname,
+ const char *tftp_server_name,
+ const char *tftp_path, const char *bootfile,
+ struct in_addr vdhcp_start, struct in_addr vnameserver,
+ struct in6_addr vnameserver6, const char **vdnssearch,
+ const char *vdomainname,
+ const SlirpCb *callbacks,
+ void *opaque);
+void slirp_cleanup(Slirp *slirp);
+
+void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout,
+ SlirpAddPollCb add_poll, void *opaque);
+
+void slirp_pollfds_poll(Slirp *slirp, int select_error,
+ SlirpGetREventsCb get_revents, void *opaque);
+
+void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
+
+int slirp_add_hostfwd(Slirp *slirp, int is_udp,
+ struct in_addr host_addr, int host_port,
+ struct in_addr guest_addr, int guest_port);
+int slirp_remove_hostfwd(Slirp *slirp, int is_udp,
+ struct in_addr host_addr, int host_port);
+int slirp_add_exec(Slirp *slirp, const char *cmdline,
+ struct in_addr *guest_addr, int guest_port);
+int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque,
+ struct in_addr *guest_addr, int guest_port);
+
+char *slirp_connection_info(Slirp *slirp);
+
+void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr,
+ int guest_port, const uint8_t *buf, int size);
+size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
+ int guest_port);
+
+void slirp_state_save(Slirp *s, SlirpWriteCb write_cb, void *opaque);
+
+int slirp_state_load(Slirp *s, int version_id,
+ SlirpReadCb read_cb, void *opaque);
+
+int slirp_state_version(void);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* LIBSLIRP_H */
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef SLIRP_MAIN_H
+#define SLIRP_MAIN_H
+
+extern unsigned curtime;
+extern struct in_addr loopback_addr;
+extern unsigned long loopback_mask;
+
+int if_encap(Slirp *slirp, struct mbuf *ifm);
+ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+/*
+ * mbuf's in SLiRP are much simpler than the real mbufs in
+ * FreeBSD. They are fixed size, determined by the MTU,
+ * so that one whole packet can fit. Mbuf's cannot be
+ * chained together. If there's more data than the mbuf
+ * could hold, an external g_malloced buffer is pointed to
+ * by m_ext (and the data pointers) and M_EXT is set in
+ * the flags
+ */
+
+#include "slirp.h"
+
+#define MBUF_THRESH 30
+
+/*
+ * Find a nice value for msize
+ */
+#define SLIRP_MSIZE\
+ (offsetof(struct mbuf, m_dat) + IF_MAXLINKHDR + TCPIPHDR_DELTA + IF_MTU)
+
+void
+m_init(Slirp *slirp)
+{
+ slirp->m_freelist.qh_link = slirp->m_freelist.qh_rlink = &slirp->m_freelist;
+ slirp->m_usedlist.qh_link = slirp->m_usedlist.qh_rlink = &slirp->m_usedlist;
+}
+
+void m_cleanup(Slirp *slirp)
+{
+ struct mbuf *m, *next;
+
+ m = (struct mbuf *) slirp->m_usedlist.qh_link;
+ while ((struct quehead *) m != &slirp->m_usedlist) {
+ next = m->m_next;
+ if (m->m_flags & M_EXT) {
+ g_free(m->m_ext);
+ }
+ g_free(m);
+ m = next;
+ }
+ m = (struct mbuf *) slirp->m_freelist.qh_link;
+ while ((struct quehead *) m != &slirp->m_freelist) {
+ next = m->m_next;
+ g_free(m);
+ m = next;
+ }
+}
+
+/*
+ * Get an mbuf from the free list, if there are none
+ * allocate one
+ *
+ * Because fragmentation can occur if we alloc new mbufs and
+ * free old mbufs, we mark all mbufs above mbuf_thresh as M_DOFREE,
+ * which tells m_free to actually g_free() it
+ */
+struct mbuf *
+m_get(Slirp *slirp)
+{
+ register struct mbuf *m;
+ int flags = 0;
+
+ DEBUG_CALL("m_get");
+
+ if (slirp->m_freelist.qh_link == &slirp->m_freelist) {
+ m = g_malloc(SLIRP_MSIZE);
+ slirp->mbuf_alloced++;
+ if (slirp->mbuf_alloced > MBUF_THRESH)
+ flags = M_DOFREE;
+ m->slirp = slirp;
+ } else {
+ m = (struct mbuf *) slirp->m_freelist.qh_link;
+ remque(m);
+ }
+
+ /* Insert it in the used list */
+ insque(m,&slirp->m_usedlist);
+ m->m_flags = (flags | M_USEDLIST);
+
+ /* Initialise it */
+ m->m_size = SLIRP_MSIZE - offsetof(struct mbuf, m_dat);
+ m->m_data = m->m_dat;
+ m->m_len = 0;
+ m->m_nextpkt = NULL;
+ m->m_prevpkt = NULL;
+ m->resolution_requested = false;
+ m->expiration_date = (uint64_t)-1;
+ DEBUG_ARG("m = %p", m);
+ return m;
+}
+
+void
+m_free(struct mbuf *m)
+{
+
+ DEBUG_CALL("m_free");
+ DEBUG_ARG("m = %p", m);
+
+ if(m) {
+ /* Remove from m_usedlist */
+ if (m->m_flags & M_USEDLIST)
+ remque(m);
+
+ /* If it's M_EXT, free() it */
+ if (m->m_flags & M_EXT) {
+ g_free(m->m_ext);
+ }
+ /*
+ * Either free() it or put it on the free list
+ */
+ if (m->m_flags & M_DOFREE) {
+ m->slirp->mbuf_alloced--;
+ g_free(m);
+ } else if ((m->m_flags & M_FREELIST) == 0) {
+ insque(m,&m->slirp->m_freelist);
+ m->m_flags = M_FREELIST; /* Clobber other flags */
+ }
+ } /* if(m) */
+}
+
+/*
+ * Copy data from one mbuf to the end of
+ * the other.. if result is too big for one mbuf, allocate
+ * an M_EXT data segment
+ */
+void
+m_cat(struct mbuf *m, struct mbuf *n)
+{
+ /*
+ * If there's no room, realloc
+ */
+ if (M_FREEROOM(m) < n->m_len)
+ m_inc(m, m->m_len + n->m_len);
+
+ memcpy(m->m_data+m->m_len, n->m_data, n->m_len);
+ m->m_len += n->m_len;
+
+ m_free(n);
+}
+
+
+/* make m 'size' bytes large from m_data */
+void
+m_inc(struct mbuf *m, int size)
+{
+ int gapsize;
+
+ /* some compilers throw up on gotos. This one we can fake. */
+ if (M_ROOM(m) > size) {
+ return;
+ }
+
+ if (m->m_flags & M_EXT) {
+ gapsize = m->m_data - m->m_ext;
+ m->m_ext = g_realloc(m->m_ext, size + gapsize);
+ } else {
+ gapsize = m->m_data - m->m_dat;
+ m->m_ext = g_malloc(size + gapsize);
+ memcpy(m->m_ext, m->m_dat, m->m_size);
+ m->m_flags |= M_EXT;
+ }
+
+ m->m_data = m->m_ext + gapsize;
+ m->m_size = size + gapsize;
+}
+
+
+
+void
+m_adj(struct mbuf *m, int len)
+{
+ if (m == NULL)
+ return;
+ if (len >= 0) {
+ /* Trim from head */
+ m->m_data += len;
+ m->m_len -= len;
+ } else {
+ /* Trim from tail */
+ len = -len;
+ m->m_len -= len;
+ }
+}
+
+
+/*
+ * Copy len bytes from m, starting off bytes into n
+ */
+int
+m_copy(struct mbuf *n, struct mbuf *m, int off, int len)
+{
+ if (len > M_FREEROOM(n))
+ return -1;
+
+ memcpy((n->m_data + n->m_len), (m->m_data + off), len);
+ n->m_len += len;
+ return 0;
+}
+
+
+/*
+ * Given a pointer into an mbuf, return the mbuf
+ * XXX This is a kludge, I should eliminate the need for it
+ * Fortunately, it's not used often
+ */
+struct mbuf *
+dtom(Slirp *slirp, void *dat)
+{
+ struct mbuf *m;
+
+ DEBUG_CALL("dtom");
+ DEBUG_ARG("dat = %p", dat);
+
+ /* bug corrected for M_EXT buffers */
+ for (m = (struct mbuf *) slirp->m_usedlist.qh_link;
+ (struct quehead *) m != &slirp->m_usedlist;
+ m = m->m_next) {
+ if (m->m_flags & M_EXT) {
+ if( (char *)dat>=m->m_ext && (char *)dat<(m->m_ext + m->m_size) )
+ return m;
+ } else {
+ if( (char *)dat >= m->m_dat && (char *)dat<(m->m_dat + m->m_size) )
+ return m;
+ }
+ }
+
+ DEBUG_ERROR("dtom failed");
+
+ return (struct mbuf *)0;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)mbuf.h 8.3 (Berkeley) 1/21/94
+ * mbuf.h,v 1.9 1994/11/14 13:54:20 bde Exp
+ */
+
+#ifndef MBUF_H
+#define MBUF_H
+
+/*
+ * Macros for type conversion
+ * mtod(m,t) - convert mbuf pointer to data pointer of correct type
+ */
+#define mtod(m,t) ((t)(m)->m_data)
+
+/* XXX About mbufs for slirp:
+ * Only one mbuf is ever used in a chain, for each "cell" of data.
+ * m_nextpkt points to the next packet, if fragmented.
+ * If the data is too large, the M_EXT is used, and a larger block
+ * is alloced. Therefore, m_free[m] must check for M_EXT and if set
+ * free the m_ext. This is inefficient memory-wise, but who cares.
+ */
+
+/*
+ * mbufs allow to have a gap between the start of the allocated buffer (m_ext if
+ * M_EXT is set, m_dat otherwise) and the in-use data:
+ *
+ * |--gapsize----->|---m_len------->
+ * |----------m_size------------------------------>
+ * |----M_ROOM-------------------->
+ * |-M_FREEROOM-->
+ *
+ * ^ ^ ^
+ * m_dat/m_ext m_data end of buffer
+ */
+
+/*
+ * How much room is in the mbuf, from m_data to the end of the mbuf
+ */
+#define M_ROOM(m) ((m->m_flags & M_EXT)? \
+ (((m)->m_ext + (m)->m_size) - (m)->m_data) \
+ : \
+ (((m)->m_dat + (m)->m_size) - (m)->m_data))
+
+/*
+ * How much free room there is
+ */
+#define M_FREEROOM(m) (M_ROOM(m) - (m)->m_len)
+
+struct mbuf {
+ /* XXX should union some of these! */
+ /* header at beginning of each mbuf: */
+ struct mbuf *m_next; /* Linked list of mbufs */
+ struct mbuf *m_prev;
+ struct mbuf *m_nextpkt; /* Next packet in queue/record */
+ struct mbuf *m_prevpkt; /* Flags aren't used in the output queue */
+ int m_flags; /* Misc flags */
+
+ int m_size; /* Size of mbuf, from m_dat or m_ext */
+ struct socket *m_so;
+
+ char *m_data; /* Current location of data */
+ int m_len; /* Amount of data in this mbuf, from m_data */
+
+ Slirp *slirp;
+ bool resolution_requested;
+ uint64_t expiration_date;
+ char *m_ext;
+ /* start of dynamic buffer area, must be last element */
+ char m_dat[];
+};
+
+#define ifq_prev m_prev
+#define ifq_next m_next
+#define ifs_prev m_prevpkt
+#define ifs_next m_nextpkt
+#define ifq_so m_so
+
+#define M_EXT 0x01 /* m_ext points to more (malloced) data */
+#define M_FREELIST 0x02 /* mbuf is on free list */
+#define M_USEDLIST 0x04 /* XXX mbuf is on used list (for dtom()) */
+#define M_DOFREE 0x08 /* when m_free is called on the mbuf, free()
+ * it rather than putting it on the free list */
+
+void m_init(Slirp *);
+void m_cleanup(Slirp *slirp);
+struct mbuf * m_get(Slirp *);
+void m_free(struct mbuf *);
+void m_cat(register struct mbuf *, register struct mbuf *);
+void m_inc(struct mbuf *, int);
+void m_adj(struct mbuf *, int);
+int m_copy(struct mbuf *, struct mbuf *, int, int);
+struct mbuf * dtom(Slirp *, void *);
+
+static inline void ifs_init(struct mbuf *ifm)
+{
+ ifm->ifs_next = ifm->ifs_prev = ifm;
+}
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+inline void
+insque(void *a, void *b)
+{
+ register struct quehead *element = (struct quehead *) a;
+ register struct quehead *head = (struct quehead *) b;
+ element->qh_link = head->qh_link;
+ head->qh_link = (struct quehead *)element;
+ element->qh_rlink = (struct quehead *)head;
+ ((struct quehead *)(element->qh_link))->qh_rlink
+ = (struct quehead *)element;
+}
+
+inline void
+remque(void *a)
+{
+ register struct quehead *element = (struct quehead *) a;
+ ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
+ ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
+ element->qh_rlink = NULL;
+}
+
+/* TODO: IPv6 */
+struct gfwd_list *
+add_guestfwd(struct gfwd_list **ex_ptr,
+ SlirpWriteCb write_cb, void *opaque,
+ struct in_addr addr, int port)
+{
+ struct gfwd_list *f = g_new0(struct gfwd_list, 1);
+
+ f->write_cb = write_cb;
+ f->opaque = opaque;
+ f->ex_fport = port;
+ f->ex_addr = addr;
+ f->ex_next = *ex_ptr;
+ *ex_ptr = f;
+
+ return f;
+}
+
+struct gfwd_list *
+add_exec(struct gfwd_list **ex_ptr, const char *cmdline,
+ struct in_addr addr, int port)
+{
+ struct gfwd_list *f = add_guestfwd(ex_ptr, NULL, NULL, addr, port);
+
+ f->ex_exec = g_strdup(cmdline);
+
+ return f;
+}
+
+static int
+slirp_socketpair_with_oob(int sv[2])
+{
+ struct sockaddr_in addr = {
+ .sin_family = AF_INET,
+ .sin_port = 0,
+ .sin_addr.s_addr = INADDR_ANY,
+ };
+ socklen_t addrlen = sizeof(addr);
+ int ret, s;
+
+ sv[1] = -1;
+ s = slirp_socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0 || bind(s, (struct sockaddr *)&addr, addrlen) < 0 ||
+ listen(s, 1) < 0 ||
+ getsockname(s, (struct sockaddr *)&addr, &addrlen) < 0) {
+ goto err;
+ }
+
+ sv[1] = slirp_socket(AF_INET, SOCK_STREAM, 0);
+ if (sv[1] < 0) {
+ goto err;
+ }
+ /*
+ * This connect won't block because we've already listen()ed on
+ * the server end (even though we won't accept() the connection
+ * until later on).
+ */
+ do {
+ ret = connect(sv[1], (struct sockaddr *)&addr, addrlen);
+ } while (ret < 0 && errno == EINTR);
+ if (ret < 0) {
+ goto err;
+ }
+
+ do {
+ sv[0] = accept(s, (struct sockaddr *)&addr, &addrlen);
+ } while (sv[0] < 0 && errno == EINTR);
+ if (sv[0] < 0) {
+ goto err;
+ }
+
+ closesocket(s);
+ return 0;
+
+err:
+ g_critical("slirp_socketpair(): %s", strerror(errno));
+ if (s >= 0) {
+ closesocket(s);
+ }
+ if (sv[1] >= 0) {
+ closesocket(sv[1]);
+ }
+ return -1;
+}
+
+static void
+fork_exec_child_setup(gpointer data)
+{
+#ifndef _WIN32
+ setsid();
+#endif
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+
+#if !GLIB_CHECK_VERSION(2, 58, 0)
+typedef struct SlirpGSpawnFds {
+ GSpawnChildSetupFunc child_setup;
+ gpointer user_data;
+ gint stdin_fd;
+ gint stdout_fd;
+ gint stderr_fd;
+} SlirpGSpawnFds;
+
+static inline void
+slirp_gspawn_fds_setup(gpointer user_data)
+{
+ SlirpGSpawnFds *q = (SlirpGSpawnFds *)user_data;
+
+ dup2(q->stdin_fd, 0);
+ dup2(q->stdout_fd, 1);
+ dup2(q->stderr_fd, 2);
+ q->child_setup(q->user_data);
+}
+#endif
+
+static inline gboolean
+g_spawn_async_with_fds_slirp(const gchar *working_directory,
+ gchar **argv,
+ gchar **envp,
+ GSpawnFlags flags,
+ GSpawnChildSetupFunc child_setup,
+ gpointer user_data,
+ GPid *child_pid,
+ gint stdin_fd,
+ gint stdout_fd,
+ gint stderr_fd,
+ GError **error)
+{
+#if GLIB_CHECK_VERSION(2, 58, 0)
+ return g_spawn_async_with_fds(working_directory, argv, envp, flags,
+ child_setup, user_data,
+ child_pid, stdin_fd, stdout_fd, stderr_fd,
+ error);
+#else
+ SlirpGSpawnFds setup = {
+ .child_setup = child_setup,
+ .user_data = user_data,
+ .stdin_fd = stdin_fd,
+ .stdout_fd = stdout_fd,
+ .stderr_fd = stderr_fd,
+ };
+
+ return g_spawn_async(working_directory, argv, envp, flags,
+ slirp_gspawn_fds_setup, &setup,
+ child_pid, error);
+#endif
+}
+
+#define g_spawn_async_with_fds(wd, argv, env, f, c, d, p, ifd, ofd, efd, err) \
+ g_spawn_async_with_fds_slirp(wd, argv, env, f, c, d, p, ifd, ofd, efd, err)
+
+#pragma GCC diagnostic pop
+
+int
+fork_exec(struct socket *so, const char *ex)
+{
+ GError *err = NULL;
+ char **argv;
+ int opt, sp[2];
+
+ DEBUG_CALL("fork_exec");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("ex = %p", ex);
+
+ if (slirp_socketpair_with_oob(sp) < 0) {
+ return 0;
+ }
+
+ argv = g_strsplit(ex, " ", -1);
+ g_spawn_async_with_fds(NULL /* cwd */,
+ argv,
+ NULL /* env */,
+ G_SPAWN_SEARCH_PATH,
+ fork_exec_child_setup, NULL /* data */,
+ NULL /* child_pid */,
+ sp[1], sp[1], sp[1],
+ &err);
+ g_strfreev(argv);
+
+ if (err) {
+ g_critical("fork_exec: %s", err->message);
+ g_error_free(err);
+ closesocket(sp[0]);
+ closesocket(sp[1]);
+ return 0;
+ }
+
+ so->s = sp[0];
+ closesocket(sp[1]);
+ slirp_socket_set_fast_reuse(so->s);
+ opt = 1;
+ setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
+ slirp_set_nonblock(so->s);
+ so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
+ return 1;
+}
+
+char *slirp_connection_info(Slirp *slirp)
+{
+ GString *str = g_string_new(NULL);
+ const char * const tcpstates[] = {
+ [TCPS_CLOSED] = "CLOSED",
+ [TCPS_LISTEN] = "LISTEN",
+ [TCPS_SYN_SENT] = "SYN_SENT",
+ [TCPS_SYN_RECEIVED] = "SYN_RCVD",
+ [TCPS_ESTABLISHED] = "ESTABLISHED",
+ [TCPS_CLOSE_WAIT] = "CLOSE_WAIT",
+ [TCPS_FIN_WAIT_1] = "FIN_WAIT_1",
+ [TCPS_CLOSING] = "CLOSING",
+ [TCPS_LAST_ACK] = "LAST_ACK",
+ [TCPS_FIN_WAIT_2] = "FIN_WAIT_2",
+ [TCPS_TIME_WAIT] = "TIME_WAIT",
+ };
+ struct in_addr dst_addr;
+ struct sockaddr_in src;
+ socklen_t src_len;
+ uint16_t dst_port;
+ struct socket *so;
+ const char *state;
+ char buf[20];
+
+ g_string_append_printf(str,
+ " Protocol[State] FD Source Address Port "
+ "Dest. Address Port RecvQ SendQ\n");
+
+ /* TODO: IPv6 */
+
+ for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
+ if (so->so_state & SS_HOSTFWD) {
+ state = "HOST_FORWARD";
+ } else if (so->so_tcpcb) {
+ state = tcpstates[so->so_tcpcb->t_state];
+ } else {
+ state = "NONE";
+ }
+ if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) {
+ src_len = sizeof(src);
+ getsockname(so->s, (struct sockaddr *)&src, &src_len);
+ dst_addr = so->so_laddr;
+ dst_port = so->so_lport;
+ } else {
+ src.sin_addr = so->so_laddr;
+ src.sin_port = so->so_lport;
+ dst_addr = so->so_faddr;
+ dst_port = so->so_fport;
+ }
+ snprintf(buf, sizeof(buf), " TCP[%s]", state);
+ g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s,
+ src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
+ ntohs(src.sin_port));
+ g_string_append_printf(str, "%15s %5d %5d %5d\n",
+ inet_ntoa(dst_addr), ntohs(dst_port),
+ so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ }
+
+ for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
+ if (so->so_state & SS_HOSTFWD) {
+ snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
+ src_len = sizeof(src);
+ getsockname(so->s, (struct sockaddr *)&src, &src_len);
+ dst_addr = so->so_laddr;
+ dst_port = so->so_lport;
+ } else {
+ snprintf(buf, sizeof(buf), " UDP[%d sec]",
+ (so->so_expire - curtime) / 1000);
+ src.sin_addr = so->so_laddr;
+ src.sin_port = so->so_lport;
+ dst_addr = so->so_faddr;
+ dst_port = so->so_fport;
+ }
+ g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s,
+ src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
+ ntohs(src.sin_port));
+ g_string_append_printf(str, "%15s %5d %5d %5d\n",
+ inet_ntoa(dst_addr), ntohs(dst_port),
+ so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ }
+
+ for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
+ snprintf(buf, sizeof(buf), " ICMP[%d sec]",
+ (so->so_expire - curtime) / 1000);
+ src.sin_addr = so->so_laddr;
+ dst_addr = so->so_faddr;
+ g_string_append_printf(str, "%-19s %3d %15s - ", buf, so->s,
+ src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
+ g_string_append_printf(str, "%15s - %5d %5d\n", inet_ntoa(dst_addr),
+ so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ }
+
+ return g_string_free(str, FALSE);
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef MISC_H
+#define MISC_H
+
+#include "libslirp.h"
+
+struct gfwd_list {
+ SlirpWriteCb write_cb;
+ void *opaque;
+ struct in_addr ex_addr; /* Server address */
+ int ex_fport; /* Port to telnet to */
+ char *ex_exec; /* Command line of what to exec */
+ struct gfwd_list *ex_next;
+};
+
+#define EMU_NONE 0x0
+
+/* TCP emulations */
+#define EMU_CTL 0x1
+#define EMU_FTP 0x2
+#define EMU_KSH 0x3
+#define EMU_IRC 0x4
+#define EMU_REALAUDIO 0x5
+#define EMU_RLOGIN 0x6
+#define EMU_IDENT 0x7
+
+#define EMU_NOCONNECT 0x10 /* Don't connect */
+
+struct tos_t {
+ uint16_t lport;
+ uint16_t fport;
+ uint8_t tos;
+ uint8_t emu;
+};
+
+struct emu_t {
+ uint16_t lport;
+ uint16_t fport;
+ uint8_t tos;
+ uint8_t emu;
+ struct emu_t *next;
+};
+
+struct slirp_quehead {
+ struct slirp_quehead *qh_link;
+ struct slirp_quehead *qh_rlink;
+};
+
+void slirp_insque(void *, void *);
+void slirp_remque(void *);
+int fork_exec(struct socket *so, const char *ex);
+
+struct gfwd_list *
+add_guestfwd(struct gfwd_list **ex_ptr,
+ SlirpWriteCb write_cb, void *opaque,
+ struct in_addr addr, int port);
+
+struct gfwd_list *
+add_exec(struct gfwd_list **ex_ptr, const char *cmdline,
+ struct in_addr addr, int port);
+
+#endif
--- /dev/null
+/*
+ * Copyright Gavin Shan, IBM Corporation 2016.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef NCSI_PKT_H
+#define NCSI_PKT_H
+
+/* from linux/net/ncsi/ncsi-pkt.h */
+#define __be32 uint32_t
+#define __be16 uint16_t
+
+struct ncsi_pkt_hdr {
+ unsigned char mc_id; /* Management controller ID */
+ unsigned char revision; /* NCSI version - 0x01 */
+ unsigned char reserved; /* Reserved */
+ unsigned char id; /* Packet sequence number */
+ unsigned char type; /* Packet type */
+ unsigned char channel; /* Network controller ID */
+ __be16 length; /* Payload length */
+ __be32 reserved1[2]; /* Reserved */
+};
+
+struct ncsi_cmd_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+};
+
+struct ncsi_rsp_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ __be16 code; /* Response code */
+ __be16 reason; /* Response reason */
+};
+
+struct ncsi_aen_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ unsigned char reserved2[3]; /* Reserved */
+ unsigned char type; /* AEN packet type */
+};
+
+/* NCSI common command packet */
+struct ncsi_cmd_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[26];
+};
+
+struct ncsi_rsp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Select Package */
+struct ncsi_cmd_sp_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char hw_arbitration; /* HW arbitration */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Disable Channel */
+struct ncsi_cmd_dc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char ald; /* Allow link down */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Reset Channel */
+struct ncsi_cmd_rc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 reserved; /* Reserved */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN Enable */
+struct ncsi_cmd_ae_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mc_id; /* MC ID */
+ __be32 mode; /* AEN working mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Set Link */
+struct ncsi_cmd_sl_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Link working mode */
+ __be32 oem_mode; /* OEM link mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Set VLAN Filter */
+struct ncsi_cmd_svf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be16 reserved; /* Reserved */
+ __be16 vlan; /* VLAN ID */
+ __be16 reserved1; /* Reserved */
+ unsigned char index; /* VLAN table index */
+ unsigned char enable; /* Enable or disable */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[14];
+};
+
+/* Enable VLAN */
+struct ncsi_cmd_ev_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* VLAN filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set MAC Address */
+struct ncsi_cmd_sma_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char mac[6]; /* MAC address */
+ unsigned char index; /* MAC table index */
+ unsigned char at_e; /* Addr type and operation */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Enable Broadcast Filter */
+struct ncsi_cmd_ebf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Enable Global Multicast Filter */
+struct ncsi_cmd_egmf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Global MC mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set NCSI Flow Control */
+struct ncsi_cmd_snfc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* Flow control mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Get Link Status */
+struct ncsi_rsp_gls_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 status; /* Link status */
+ __be32 other; /* Other indications */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum;
+ unsigned char pad[10];
+};
+
+/* Get Version ID */
+struct ncsi_rsp_gvi_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 ncsi_version; /* NCSI version */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char alpha2; /* NCSI version */
+ unsigned char fw_name[12]; /* f/w name string */
+ __be32 fw_version; /* f/w version */
+ __be16 pci_ids[4]; /* PCI IDs */
+ __be32 mf_id; /* Manufacture ID */
+ __be32 checksum;
+};
+
+/* Get Capabilities */
+struct ncsi_rsp_gc_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cap; /* Capabilities */
+ __be32 bc_cap; /* Broadcast cap */
+ __be32 mc_cap; /* Multicast cap */
+ __be32 buf_cap; /* Buffering cap */
+ __be32 aen_cap; /* AEN cap */
+ unsigned char vlan_cnt; /* VLAN filter count */
+ unsigned char mixed_cnt; /* Mix filter count */
+ unsigned char mc_cnt; /* MC filter count */
+ unsigned char uc_cnt; /* UC filter count */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char channel_cnt; /* Channel count */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Parameters */
+struct ncsi_rsp_gp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ unsigned char mac_cnt; /* Number of MAC addr */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char mac_enable; /* MAC addr enable flags */
+ unsigned char vlan_cnt; /* VLAN tag count */
+ unsigned char reserved1; /* Reserved */
+ __be16 vlan_enable; /* VLAN tag enable flags */
+ __be32 link_mode; /* Link setting */
+ __be32 bc_mode; /* BC filter mode */
+ __be32 valid_modes; /* Valid mode parameters */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char fc_mode; /* Flow control mode */
+ unsigned char reserved2[2]; /* Reserved */
+ __be32 aen_mode; /* AEN mode */
+ unsigned char mac[6]; /* Supported MAC addr */
+ __be16 vlan; /* Supported VLAN tags */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Controller Packet Statistics */
+struct ncsi_rsp_gcps_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cnt_hi; /* Counter cleared */
+ __be32 cnt_lo; /* Counter cleared */
+ __be32 rx_bytes; /* Rx bytes */
+ __be32 tx_bytes; /* Tx bytes */
+ __be32 rx_uc_pkts; /* Rx UC packets */
+ __be32 rx_mc_pkts; /* Rx MC packets */
+ __be32 rx_bc_pkts; /* Rx BC packets */
+ __be32 tx_uc_pkts; /* Tx UC packets */
+ __be32 tx_mc_pkts; /* Tx MC packets */
+ __be32 tx_bc_pkts; /* Tx BC packets */
+ __be32 fcs_err; /* FCS errors */
+ __be32 align_err; /* Alignment errors */
+ __be32 false_carrier; /* False carrier detection */
+ __be32 runt_pkts; /* Rx runt packets */
+ __be32 jabber_pkts; /* Rx jabber packets */
+ __be32 rx_pause_xon; /* Rx pause XON frames */
+ __be32 rx_pause_xoff; /* Rx XOFF frames */
+ __be32 tx_pause_xon; /* Tx XON frames */
+ __be32 tx_pause_xoff; /* Tx XOFF frames */
+ __be32 tx_s_collision; /* Single collision frames */
+ __be32 tx_m_collision; /* Multiple collision frames */
+ __be32 l_collision; /* Late collision frames */
+ __be32 e_collision; /* Excessive collision frames */
+ __be32 rx_ctl_frames; /* Rx control frames */
+ __be32 rx_64_frames; /* Rx 64-bytes frames */
+ __be32 rx_127_frames; /* Rx 65-127 bytes frames */
+ __be32 rx_255_frames; /* Rx 128-255 bytes frames */
+ __be32 rx_511_frames; /* Rx 256-511 bytes frames */
+ __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */
+ __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */
+ __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */
+ __be32 tx_64_frames; /* Tx 64-bytes frames */
+ __be32 tx_127_frames; /* Tx 65-127 bytes frames */
+ __be32 tx_255_frames; /* Tx 128-255 bytes frames */
+ __be32 tx_511_frames; /* Tx 256-511 bytes frames */
+ __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */
+ __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */
+ __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */
+ __be32 rx_valid_bytes; /* Rx valid bytes */
+ __be32 rx_runt_pkts; /* Rx error runt packets */
+ __be32 rx_jabber_pkts; /* Rx error jabber packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Statistics */
+struct ncsi_rsp_gns_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 rx_cmds; /* Rx NCSI commands */
+ __be32 dropped_cmds; /* Dropped commands */
+ __be32 cmd_type_errs; /* Command type errors */
+ __be32 cmd_csum_errs; /* Command checksum errors */
+ __be32 rx_pkts; /* Rx NCSI packets */
+ __be32 tx_pkts; /* Tx NCSI packets */
+ __be32 tx_aen_pkts; /* Tx AEN packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Pass-through Statistics */
+struct ncsi_rsp_gnpts_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 tx_pkts; /* Tx packets */
+ __be32 tx_dropped; /* Tx dropped packets */
+ __be32 tx_channel_err; /* Tx channel errors */
+ __be32 tx_us_err; /* Tx undersize errors */
+ __be32 rx_pkts; /* Rx packets */
+ __be32 rx_dropped; /* Rx dropped packets */
+ __be32 rx_channel_err; /* Rx channel errors */
+ __be32 rx_us_err; /* Rx undersize errors */
+ __be32 rx_os_err; /* Rx oversize errors */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get package status */
+struct ncsi_rsp_gps_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 status; /* Hardware arbitration status */
+ __be32 checksum;
+};
+
+/* Get package UUID */
+struct ncsi_rsp_gpuuid_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ unsigned char uuid[16]; /* UUID */
+ __be32 checksum;
+};
+
+/* AEN: Link State Change */
+struct ncsi_aen_lsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Link status */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[14];
+};
+
+/* AEN: Configuration Required */
+struct ncsi_aen_cr_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN: Host Network Controller Driver Status Change */
+struct ncsi_aen_hncdsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* NCSI packet revision */
+#define NCSI_PKT_REVISION 0x01
+
+/* NCSI packet commands */
+#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */
+#define NCSI_PKT_CMD_SP 0x01 /* Select Package */
+#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */
+#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */
+#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */
+#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */
+#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */
+#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */
+#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */
+#define NCSI_PKT_CMD_SL 0x09 /* Set Link */
+#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */
+#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */
+#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */
+#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */
+#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */
+#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */
+#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */
+#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */
+#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */
+#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */
+#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */
+#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */
+#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */
+#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */
+#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */
+#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */
+#define NCSI_PKT_CMD_GPS 0x1b /* Get package status */
+#define NCSI_PKT_CMD_OEM 0x50 /* OEM */
+#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */
+#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */
+
+/* NCSI packet responses */
+#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80)
+#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80)
+#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80)
+#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80)
+#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80)
+#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80)
+#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80)
+#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80)
+#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80)
+#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80)
+#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80)
+#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80)
+#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80)
+#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80)
+#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80)
+#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80)
+#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80)
+#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80)
+#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80)
+#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80)
+#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80)
+#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80)
+#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80)
+#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80)
+#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80)
+#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80)
+#define NCSI_PKT_RSP_GPS (NCSI_PKT_CMD_GPS + 0x80)
+#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80)
+#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80)
+#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 0x80)
+
+/* NCSI response code/reason */
+#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */
+#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */
+#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */
+#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */
+#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */
+#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */
+#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */
+#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */
+#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */
+#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */
+#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */
+
+/* NCSI AEN packet type */
+#define NCSI_PKT_AEN 0xFF /* AEN Packet */
+#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */
+#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */
+#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */
+
+#endif /* NCSI_PKT_H */
--- /dev/null
+/*
+ * NC-SI (Network Controller Sideband Interface) "echo" model
+ *
+ * Copyright (C) 2016-2018 IBM Corp.
+ *
+ * This code is licensed under the GPL version 2 or later. See the
+ * COPYING file in the top-level directory.
+ */
+#include "slirp.h"
+
+#include "ncsi-pkt.h"
+
+static uint32_t ncsi_calculate_checksum(uint16_t *data, int len)
+{
+ uint32_t checksum = 0;
+ int i;
+
+ /*
+ * 32-bit unsigned sum of the NC-SI packet header and NC-SI packet
+ * payload interpreted as a series of 16-bit unsigned integer values.
+ */
+ for (i = 0; i < len; i++) {
+ checksum += htons(data[i]);
+ }
+
+ checksum = (~checksum + 1);
+ return checksum;
+}
+
+/* Get Capabilities */
+static int ncsi_rsp_handler_gc(struct ncsi_rsp_pkt_hdr *rnh)
+{
+ struct ncsi_rsp_gc_pkt *rsp = (struct ncsi_rsp_gc_pkt *) rnh;
+
+ rsp->cap = htonl(~0);
+ rsp->bc_cap = htonl(~0);
+ rsp->mc_cap = htonl(~0);
+ rsp->buf_cap = htonl(~0);
+ rsp->aen_cap = htonl(~0);
+ rsp->vlan_mode = 0xff;
+ rsp->uc_cnt = 2;
+ return 0;
+}
+
+/* Get Link status */
+static int ncsi_rsp_handler_gls(struct ncsi_rsp_pkt_hdr *rnh)
+{
+ struct ncsi_rsp_gls_pkt *rsp = (struct ncsi_rsp_gls_pkt *) rnh;
+
+ rsp->status = htonl(0x1);
+ return 0;
+}
+
+/* Get Parameters */
+static int ncsi_rsp_handler_gp(struct ncsi_rsp_pkt_hdr *rnh)
+{
+ struct ncsi_rsp_gp_pkt *rsp = (struct ncsi_rsp_gp_pkt *) rnh;
+
+ /* no MAC address filters or VLAN filters on the channel */
+ rsp->mac_cnt = 0;
+ rsp->mac_enable = 0;
+ rsp->vlan_cnt = 0;
+ rsp->vlan_enable = 0;
+
+ return 0;
+}
+
+static const struct ncsi_rsp_handler {
+ unsigned char type;
+ int payload;
+ int (*handler)(struct ncsi_rsp_pkt_hdr *rnh);
+} ncsi_rsp_handlers[] = {
+ { NCSI_PKT_RSP_CIS, 4, NULL },
+ { NCSI_PKT_RSP_SP, 4, NULL },
+ { NCSI_PKT_RSP_DP, 4, NULL },
+ { NCSI_PKT_RSP_EC, 4, NULL },
+ { NCSI_PKT_RSP_DC, 4, NULL },
+ { NCSI_PKT_RSP_RC, 4, NULL },
+ { NCSI_PKT_RSP_ECNT, 4, NULL },
+ { NCSI_PKT_RSP_DCNT, 4, NULL },
+ { NCSI_PKT_RSP_AE, 4, NULL },
+ { NCSI_PKT_RSP_SL, 4, NULL },
+ { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls },
+ { NCSI_PKT_RSP_SVF, 4, NULL },
+ { NCSI_PKT_RSP_EV, 4, NULL },
+ { NCSI_PKT_RSP_DV, 4, NULL },
+ { NCSI_PKT_RSP_SMA, 4, NULL },
+ { NCSI_PKT_RSP_EBF, 4, NULL },
+ { NCSI_PKT_RSP_DBF, 4, NULL },
+ { NCSI_PKT_RSP_EGMF, 4, NULL },
+ { NCSI_PKT_RSP_DGMF, 4, NULL },
+ { NCSI_PKT_RSP_SNFC, 4, NULL },
+ { NCSI_PKT_RSP_GVI, 40, NULL },
+ { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc },
+ { NCSI_PKT_RSP_GP, 40, ncsi_rsp_handler_gp },
+ { NCSI_PKT_RSP_GCPS, 172, NULL },
+ { NCSI_PKT_RSP_GNS, 172, NULL },
+ { NCSI_PKT_RSP_GNPTS, 172, NULL },
+ { NCSI_PKT_RSP_GPS, 8, NULL },
+ { NCSI_PKT_RSP_OEM, 0, NULL },
+ { NCSI_PKT_RSP_PLDM, 0, NULL },
+ { NCSI_PKT_RSP_GPUUID, 20, NULL }
+};
+
+/*
+ * packet format : ncsi header + payload + checksum
+ */
+#define NCSI_MAX_PAYLOAD 172
+#define NCSI_MAX_LEN (sizeof(struct ncsi_pkt_hdr) + NCSI_MAX_PAYLOAD + 4)
+
+void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
+{
+ struct ncsi_pkt_hdr *nh = (struct ncsi_pkt_hdr *)(pkt + ETH_HLEN);
+ uint8_t ncsi_reply[ETH_HLEN + NCSI_MAX_LEN];
+ struct ethhdr *reh = (struct ethhdr *)ncsi_reply;
+ struct ncsi_rsp_pkt_hdr *rnh = (struct ncsi_rsp_pkt_hdr *)
+ (ncsi_reply + ETH_HLEN);
+ const struct ncsi_rsp_handler *handler = NULL;
+ int i;
+ int ncsi_rsp_len = sizeof(*nh);
+ uint32_t checksum;
+ uint32_t *pchecksum;
+
+ memset(ncsi_reply, 0, sizeof(ncsi_reply));
+
+ memset(reh->h_dest, 0xff, ETH_ALEN);
+ memset(reh->h_source, 0xff, ETH_ALEN);
+ reh->h_proto = htons(ETH_P_NCSI);
+
+ for (i = 0; i < G_N_ELEMENTS(ncsi_rsp_handlers); i++) {
+ if (ncsi_rsp_handlers[i].type == nh->type + 0x80) {
+ handler = &ncsi_rsp_handlers[i];
+ break;
+ }
+ }
+
+ rnh->common.mc_id = nh->mc_id;
+ rnh->common.revision = NCSI_PKT_REVISION;
+ rnh->common.id = nh->id;
+ rnh->common.type = nh->type + 0x80;
+ rnh->common.channel = nh->channel;
+
+ if (handler) {
+ rnh->common.length = htons(handler->payload);
+ rnh->code = htons(NCSI_PKT_RSP_C_COMPLETED);
+ rnh->reason = htons(NCSI_PKT_RSP_R_NO_ERROR);
+
+ if (handler->handler) {
+ /* TODO: handle errors */
+ handler->handler(rnh);
+ }
+ ncsi_rsp_len += handler->payload;
+ } else {
+ rnh->common.length = 0;
+ rnh->code = htons(NCSI_PKT_RSP_C_UNAVAILABLE);
+ rnh->reason = htons(NCSI_PKT_RSP_R_UNKNOWN);
+ }
+
+ /* Add the optional checksum at the end of the frame. */
+ checksum = ncsi_calculate_checksum((uint16_t *) rnh, ncsi_rsp_len);
+ pchecksum = (uint32_t *)((void *) rnh + ncsi_rsp_len);
+ *pchecksum = htonl(checksum);
+ ncsi_rsp_len += 4;
+
+ slirp_send_packet_all(slirp, ncsi_reply, ETH_HLEN + ncsi_rsp_len);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
+ */
+
+#include "slirp.h"
+
+void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
+ uint8_t ethaddr[ETH_ALEN])
+{
+ char addrstr[INET6_ADDRSTRLEN];
+ NdpTable *ndp_table = &slirp->ndp_table;
+ int i;
+
+ inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
+
+ DEBUG_CALL("ndp_table_add");
+ DEBUG_ARG("ip = %s", addrstr);
+ DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
+ ethaddr[0], ethaddr[1], ethaddr[2],
+ ethaddr[3], ethaddr[4], ethaddr[5]);
+
+ if (IN6_IS_ADDR_MULTICAST(&ip_addr) || in6_zero(&ip_addr)) {
+ /* Do not register multicast or unspecified addresses */
+ DEBUG_CALL(" abort: do not register multicast or unspecified address");
+ return;
+ }
+
+ /* Search for an entry */
+ for (i = 0; i < NDP_TABLE_SIZE; i++) {
+ if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
+ DEBUG_CALL(" already in table: update the entry");
+ /* Update the entry */
+ memcpy(ndp_table->table[i].eth_addr, ethaddr, ETH_ALEN);
+ return;
+ }
+ }
+
+ /* No entry found, create a new one */
+ DEBUG_CALL(" create new entry");
+ ndp_table->table[ndp_table->next_victim].ip_addr = ip_addr;
+ memcpy(ndp_table->table[ndp_table->next_victim].eth_addr,
+ ethaddr, ETH_ALEN);
+ ndp_table->next_victim = (ndp_table->next_victim + 1) % NDP_TABLE_SIZE;
+}
+
+bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
+ uint8_t out_ethaddr[ETH_ALEN])
+{
+ char addrstr[INET6_ADDRSTRLEN];
+ NdpTable *ndp_table = &slirp->ndp_table;
+ int i;
+
+ inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
+
+ DEBUG_CALL("ndp_table_search");
+ DEBUG_ARG("ip = %s", addrstr);
+
+ assert(!in6_zero(&ip_addr));
+
+ /* Multicast address: fec0::abcd:efgh/8 -> 33:33:ab:cd:ef:gh */
+ if (IN6_IS_ADDR_MULTICAST(&ip_addr)) {
+ out_ethaddr[0] = 0x33; out_ethaddr[1] = 0x33;
+ out_ethaddr[2] = ip_addr.s6_addr[12];
+ out_ethaddr[3] = ip_addr.s6_addr[13];
+ out_ethaddr[4] = ip_addr.s6_addr[14];
+ out_ethaddr[5] = ip_addr.s6_addr[15];
+ DEBUG_ARG("multicast addr = %02x:%02x:%02x:%02x:%02x:%02x",
+ out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
+ out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
+ return 1;
+ }
+
+ for (i = 0; i < NDP_TABLE_SIZE; i++) {
+ if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
+ memcpy(out_ethaddr, ndp_table->table[i].eth_addr, ETH_ALEN);
+ DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x",
+ out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
+ out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
+ return 1;
+ }
+ }
+
+ DEBUG_CALL(" ip not found in table");
+ return 0;
+}
--- /dev/null
+/* $NetBSD: queue.h,v 1.52 2009/04/20 09:56:08 mschuett Exp $ */
+
+/*
+ * slirp version: Copy from QEMU, removed all but tail queues.
+ */
+
+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)queue.h 8.5 (Berkeley) 8/20/94
+ */
+
+#ifndef QTAILQ_H
+#define QTAILQ_H
+
+/*
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ */
+typedef struct QTailQLink {
+ void *tql_next;
+ struct QTailQLink *tql_prev;
+} QTailQLink;
+
+/*
+ * Tail queue definitions. The union acts as a poor man template, as if
+ * it were QTailQLink<type>.
+ */
+#define QTAILQ_HEAD(name, type) \
+ union name { \
+ struct type *tqh_first; /* first element */ \
+ QTailQLink tqh_circ; /* link for circular backwards list */ \
+ }
+
+#define QTAILQ_HEAD_INITIALIZER(head) \
+ { .tqh_circ = { NULL, &(head).tqh_circ } }
+
+#define QTAILQ_ENTRY(type) \
+ union { \
+ struct type *tqe_next; /* next element */ \
+ QTailQLink tqe_circ; /* link for circular backwards list */ \
+ }
+
+#define QTAILQ_INIT(head) do { \
+ (head)->tqh_first = NULL; \
+ (head)->tqh_circ.tql_prev = &(head)->tqh_circ; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_INSERT_HEAD(head, elm, field) do { \
+ if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
+ (head)->tqh_first->field.tqe_circ.tql_prev = \
+ &(elm)->field.tqe_circ; \
+ else \
+ (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
+ (head)->tqh_first = (elm); \
+ (elm)->field.tqe_circ.tql_prev = &(head)->tqh_circ; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_INSERT_TAIL(head, elm, field) do { \
+ (elm)->field.tqe_next = NULL; \
+ (elm)->field.tqe_circ.tql_prev = (head)->tqh_circ.tql_prev; \
+ (head)->tqh_circ.tql_prev->tql_next = (elm); \
+ (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
+ if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
+ (elm)->field.tqe_next->field.tqe_circ.tql_prev = \
+ &(elm)->field.tqe_circ; \
+ else \
+ (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \
+ (listelm)->field.tqe_next = (elm); \
+ (elm)->field.tqe_circ.tql_prev = &(listelm)->field.tqe_circ; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_INSERT_BEFORE(listelm, elm, field) do { \
+ (elm)->field.tqe_circ.tql_prev = (listelm)->field.tqe_circ.tql_prev; \
+ (elm)->field.tqe_next = (listelm); \
+ (listelm)->field.tqe_circ.tql_prev->tql_next = (elm); \
+ (listelm)->field.tqe_circ.tql_prev = &(elm)->field.tqe_circ; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_REMOVE(head, elm, field) do { \
+ if (((elm)->field.tqe_next) != NULL) \
+ (elm)->field.tqe_next->field.tqe_circ.tql_prev = \
+ (elm)->field.tqe_circ.tql_prev; \
+ else \
+ (head)->tqh_circ.tql_prev = (elm)->field.tqe_circ.tql_prev; \
+ (elm)->field.tqe_circ.tql_prev->tql_next = (elm)->field.tqe_next; \
+ (elm)->field.tqe_circ.tql_prev = NULL; \
+} while (/*CONSTCOND*/0)
+
+#define QTAILQ_FOREACH(var, head, field) \
+ for ((var) = ((head)->tqh_first); \
+ (var); \
+ (var) = ((var)->field.tqe_next))
+
+#define QTAILQ_FOREACH_SAFE(var, head, field, next_var) \
+ for ((var) = ((head)->tqh_first); \
+ (var) && ((next_var) = ((var)->field.tqe_next), 1); \
+ (var) = (next_var))
+
+#define QTAILQ_FOREACH_REVERSE(var, head, field) \
+ for ((var) = QTAILQ_LAST(head); \
+ (var); \
+ (var) = QTAILQ_PREV(var, field))
+
+#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, field, prev_var) \
+ for ((var) = QTAILQ_LAST(head); \
+ (var) && ((prev_var) = QTAILQ_PREV(var, field)); \
+ (var) = (prev_var))
+
+/*
+ * Tail queue access methods.
+ */
+#define QTAILQ_EMPTY(head) ((head)->tqh_first == NULL)
+#define QTAILQ_FIRST(head) ((head)->tqh_first)
+#define QTAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
+#define QTAILQ_IN_USE(elm, field) ((elm)->field.tqe_circ.tql_prev != NULL)
+
+#define QTAILQ_LINK_PREV(link) \
+ ((link).tql_prev->tql_prev->tql_next)
+#define QTAILQ_LAST(head) \
+ ((typeof((head)->tqh_first)) QTAILQ_LINK_PREV((head)->tqh_circ))
+#define QTAILQ_PREV(elm, field) \
+ ((typeof((elm)->field.tqe_next)) QTAILQ_LINK_PREV((elm)->field.tqe_circ))
+
+#define field_at_offset(base, offset, type) \
+ ((type *) (((char *) (base)) + (offset)))
+
+/*
+ * Raw access of elements of a tail queue head. Offsets are all zero
+ * because it's a union.
+ */
+#define QTAILQ_RAW_FIRST(head) \
+ field_at_offset(head, 0, void *)
+#define QTAILQ_RAW_TQH_CIRC(head) \
+ field_at_offset(head, 0, QTailQLink)
+
+/*
+ * Raw access of elements of a tail entry
+ */
+#define QTAILQ_RAW_NEXT(elm, entry) \
+ field_at_offset(elm, entry, void *)
+#define QTAILQ_RAW_TQE_CIRC(elm, entry) \
+ field_at_offset(elm, entry, QTailQLink)
+/*
+ * Tail queue traversal using pointer arithmetic.
+ */
+#define QTAILQ_RAW_FOREACH(elm, head, entry) \
+ for ((elm) = *QTAILQ_RAW_FIRST(head); \
+ (elm); \
+ (elm) = *QTAILQ_RAW_NEXT(elm, entry))
+/*
+ * Tail queue insertion using pointer arithmetic.
+ */
+#define QTAILQ_RAW_INSERT_TAIL(head, elm, entry) do { \
+ *QTAILQ_RAW_NEXT(elm, entry) = NULL; \
+ QTAILQ_RAW_TQE_CIRC(elm, entry)->tql_prev = QTAILQ_RAW_TQH_CIRC(head)->tql_prev; \
+ QTAILQ_RAW_TQH_CIRC(head)->tql_prev->tql_next = (elm); \
+ QTAILQ_RAW_TQH_CIRC(head)->tql_prev = QTAILQ_RAW_TQE_CIRC(elm, entry); \
+} while (/*CONSTCOND*/0)
+
+#endif /* QTAILQ_H */
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+static void sbappendsb(struct sbuf *sb, struct mbuf *m);
+
+void
+sbfree(struct sbuf *sb)
+{
+ free(sb->sb_data);
+}
+
+bool
+sbdrop(struct sbuf *sb, int num)
+{
+ int limit = sb->sb_datalen / 2;
+
+ /*
+ * We can only drop how much we have
+ * This should never succeed
+ */
+ if(num > sb->sb_cc)
+ num = sb->sb_cc;
+ sb->sb_cc -= num;
+ sb->sb_rptr += num;
+ if(sb->sb_rptr >= sb->sb_data + sb->sb_datalen)
+ sb->sb_rptr -= sb->sb_datalen;
+
+ if (sb->sb_cc < limit && sb->sb_cc + num >= limit) {
+ return true;
+ }
+
+ return false;
+}
+
+void
+sbreserve(struct sbuf *sb, int size)
+{
+ if (sb->sb_data) {
+ /* Already alloced, realloc if necessary */
+ if (sb->sb_datalen != size) {
+ sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)realloc(sb->sb_data, size);
+ sb->sb_cc = 0;
+ if (sb->sb_wptr)
+ sb->sb_datalen = size;
+ else
+ sb->sb_datalen = 0;
+ }
+ } else {
+ sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)malloc(size);
+ sb->sb_cc = 0;
+ if (sb->sb_wptr)
+ sb->sb_datalen = size;
+ else
+ sb->sb_datalen = 0;
+ }
+}
+
+/*
+ * Try and write() to the socket, whatever doesn't get written
+ * append to the buffer... for a host with a fast net connection,
+ * this prevents an unnecessary copy of the data
+ * (the socket is non-blocking, so we won't hang)
+ */
+void
+sbappend(struct socket *so, struct mbuf *m)
+{
+ int ret = 0;
+
+ DEBUG_CALL("sbappend");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("m->m_len = %d", m->m_len);
+
+ /* Shouldn't happen, but... e.g. foreign host closes connection */
+ if (m->m_len <= 0) {
+ m_free(m);
+ return;
+ }
+
+ /*
+ * If there is urgent data, call sosendoob
+ * if not all was sent, sowrite will take care of the rest
+ * (The rest of this function is just an optimisation)
+ */
+ if (so->so_urgc) {
+ sbappendsb(&so->so_rcv, m);
+ m_free(m);
+ (void)sosendoob(so);
+ return;
+ }
+
+ /*
+ * We only write if there's nothing in the buffer,
+ * ottherwise it'll arrive out of order, and hence corrupt
+ */
+ if (!so->so_rcv.sb_cc)
+ ret = slirp_send(so, m->m_data, m->m_len, 0);
+
+ if (ret <= 0) {
+ /*
+ * Nothing was written
+ * It's possible that the socket has closed, but
+ * we don't need to check because if it has closed,
+ * it will be detected in the normal way by soread()
+ */
+ sbappendsb(&so->so_rcv, m);
+ } else if (ret != m->m_len) {
+ /*
+ * Something was written, but not everything..
+ * sbappendsb the rest
+ */
+ m->m_len -= ret;
+ m->m_data += ret;
+ sbappendsb(&so->so_rcv, m);
+ } /* else */
+ /* Whatever happened, we free the mbuf */
+ m_free(m);
+}
+
+/*
+ * Copy the data from m into sb
+ * The caller is responsible to make sure there's enough room
+ */
+static void
+sbappendsb(struct sbuf *sb, struct mbuf *m)
+{
+ int len, n, nn;
+
+ len = m->m_len;
+
+ if (sb->sb_wptr < sb->sb_rptr) {
+ n = sb->sb_rptr - sb->sb_wptr;
+ if (n > len) n = len;
+ memcpy(sb->sb_wptr, m->m_data, n);
+ } else {
+ /* Do the right edge first */
+ n = sb->sb_data + sb->sb_datalen - sb->sb_wptr;
+ if (n > len) n = len;
+ memcpy(sb->sb_wptr, m->m_data, n);
+ len -= n;
+ if (len) {
+ /* Now the left edge */
+ nn = sb->sb_rptr - sb->sb_data;
+ if (nn > len) nn = len;
+ memcpy(sb->sb_data,m->m_data+n,nn);
+ n += nn;
+ }
+ }
+
+ sb->sb_cc += n;
+ sb->sb_wptr += n;
+ if (sb->sb_wptr >= sb->sb_data + sb->sb_datalen)
+ sb->sb_wptr -= sb->sb_datalen;
+}
+
+/*
+ * Copy data from sbuf to a normal, straight buffer
+ * Don't update the sbuf rptr, this will be
+ * done in sbdrop when the data is acked
+ */
+void
+sbcopy(struct sbuf *sb, int off, int len, char *to)
+{
+ char *from;
+
+ from = sb->sb_rptr + off;
+ if (from >= sb->sb_data + sb->sb_datalen)
+ from -= sb->sb_datalen;
+
+ if (from < sb->sb_wptr) {
+ if (len > sb->sb_cc) len = sb->sb_cc;
+ memcpy(to,from,len);
+ } else {
+ /* re-use off */
+ off = (sb->sb_data + sb->sb_datalen) - from;
+ if (off > len) off = len;
+ memcpy(to,from,off);
+ len -= off;
+ if (len)
+ memcpy(to+off,sb->sb_data,len);
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef SBUF_H
+#define SBUF_H
+
+#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
+
+struct sbuf {
+ uint32_t sb_cc; /* actual chars in buffer */
+ uint32_t sb_datalen; /* Length of data */
+ char *sb_wptr; /* write pointer. points to where the next
+ * bytes should be written in the sbuf */
+ char *sb_rptr; /* read pointer. points to where the next
+ * byte should be read from the sbuf */
+ char *sb_data; /* Actual data */
+};
+
+void sbfree(struct sbuf *);
+bool sbdrop(struct sbuf *, int);
+void sbreserve(struct sbuf *, int);
+void sbappend(struct socket *, struct mbuf *);
+void sbcopy(struct sbuf *, int, int, char *);
+
+#endif
--- /dev/null
+/*
+ * libslirp glue
+ *
+ * Copyright (c) 2004-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "slirp.h"
+
+
+#ifndef _WIN32
+#include <net/if.h>
+#endif
+
+int slirp_debug;
+
+/* Define to 1 if you want KEEPALIVE timers */
+bool slirp_do_keepalive;
+
+/* host loopback address */
+struct in_addr loopback_addr;
+/* host loopback network mask */
+unsigned long loopback_mask;
+
+/* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */
+static const uint8_t special_ethaddr[ETH_ALEN] = {
+ 0x52, 0x55, 0x00, 0x00, 0x00, 0x00
+};
+
+unsigned curtime;
+
+static struct in_addr dns_addr;
+#ifndef _WIN32
+static struct in6_addr dns6_addr;
+#endif
+static unsigned dns_addr_time;
+#ifndef _WIN32
+static unsigned dns6_addr_time;
+#endif
+
+#define TIMEOUT_FAST 2 /* milliseconds */
+#define TIMEOUT_SLOW 499 /* milliseconds */
+/* for the aging of certain requests like DNS */
+#define TIMEOUT_DEFAULT 1000 /* milliseconds */
+
+#ifdef _WIN32
+
+int get_dns_addr(struct in_addr *pdns_addr)
+{
+ FIXED_INFO *FixedInfo=NULL;
+ ULONG BufLen;
+ DWORD ret;
+ IP_ADDR_STRING *pIPAddr;
+ struct in_addr tmp_addr;
+
+ if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < TIMEOUT_DEFAULT) {
+ *pdns_addr = dns_addr;
+ return 0;
+ }
+
+ FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO));
+ BufLen = sizeof(FIXED_INFO);
+
+ if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) {
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ FixedInfo = GlobalAlloc(GPTR, BufLen);
+ }
+
+ if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) {
+ printf("GetNetworkParams failed. ret = %08x\n", (unsigned)ret );
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ return -1;
+ }
+
+ pIPAddr = &(FixedInfo->DnsServerList);
+ inet_aton(pIPAddr->IpAddress.String, &tmp_addr);
+ *pdns_addr = tmp_addr;
+ dns_addr = tmp_addr;
+ dns_addr_time = curtime;
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ return 0;
+}
+
+int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
+{
+ return -1;
+}
+
+static void winsock_cleanup(void)
+{
+ WSACleanup();
+}
+
+#else
+
+static int get_dns_addr_cached(void *pdns_addr, void *cached_addr,
+ socklen_t addrlen,
+ struct stat *cached_stat, unsigned *cached_time)
+{
+ struct stat old_stat;
+ if (curtime - *cached_time < TIMEOUT_DEFAULT) {
+ memcpy(pdns_addr, cached_addr, addrlen);
+ return 0;
+ }
+ old_stat = *cached_stat;
+ if (stat("/etc/resolv.conf", cached_stat) != 0) {
+ return -1;
+ }
+ if (cached_stat->st_dev == old_stat.st_dev
+ && cached_stat->st_ino == old_stat.st_ino
+ && cached_stat->st_size == old_stat.st_size
+ && cached_stat->st_mtime == old_stat.st_mtime) {
+ memcpy(pdns_addr, cached_addr, addrlen);
+ return 0;
+ }
+ return 1;
+}
+
+static int get_dns_addr_resolv_conf(int af, void *pdns_addr, void *cached_addr,
+ socklen_t addrlen, uint32_t *scope_id,
+ unsigned *cached_time)
+{
+ char buff[512];
+ char buff2[257];
+ FILE *f;
+ int found = 0;
+ void *tmp_addr = alloca(addrlen);
+ unsigned if_index;
+
+ f = fopen("/etc/resolv.conf", "r");
+ if (!f)
+ return -1;
+
+ DEBUG_MISC("IP address of your DNS(s):");
+ while (fgets(buff, 512, f) != NULL) {
+ if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) {
+ char *c = strchr(buff2, '%');
+ if (c) {
+ if_index = if_nametoindex(c + 1);
+ *c = '\0';
+ } else {
+ if_index = 0;
+ }
+
+ if (!inet_pton(af, buff2, tmp_addr)) {
+ continue;
+ }
+ /* If it's the first one, set it to dns_addr */
+ if (!found) {
+ memcpy(pdns_addr, tmp_addr, addrlen);
+ memcpy(cached_addr, tmp_addr, addrlen);
+ if (scope_id) {
+ *scope_id = if_index;
+ }
+ *cached_time = curtime;
+ }
+
+ if (++found > 3) {
+ DEBUG_MISC(" (more)");
+ break;
+ } else if (slirp_debug & DBG_MISC) {
+ char s[INET6_ADDRSTRLEN];
+ const char *res = inet_ntop(af, tmp_addr, s, sizeof(s));
+ if (!res) {
+ res = " (string conversion error)";
+ }
+ DEBUG_MISC(" %s", res);
+ }
+ }
+ }
+ fclose(f);
+ if (!found)
+ return -1;
+ return 0;
+}
+
+int get_dns_addr(struct in_addr *pdns_addr)
+{
+ static struct stat dns_addr_stat;
+
+ if (dns_addr.s_addr != 0) {
+ int ret;
+ ret = get_dns_addr_cached(pdns_addr, &dns_addr, sizeof(dns_addr),
+ &dns_addr_stat, &dns_addr_time);
+ if (ret <= 0) {
+ return ret;
+ }
+ }
+ return get_dns_addr_resolv_conf(AF_INET, pdns_addr, &dns_addr,
+ sizeof(dns_addr), NULL, &dns_addr_time);
+}
+
+int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id)
+{
+ static struct stat dns6_addr_stat;
+
+ if (!in6_zero(&dns6_addr)) {
+ int ret;
+ ret = get_dns_addr_cached(pdns6_addr, &dns6_addr, sizeof(dns6_addr),
+ &dns6_addr_stat, &dns6_addr_time);
+ if (ret <= 0) {
+ return ret;
+ }
+ }
+ return get_dns_addr_resolv_conf(AF_INET6, pdns6_addr, &dns6_addr,
+ sizeof(dns6_addr),
+ scope_id, &dns6_addr_time);
+}
+
+#endif
+
+static void slirp_init_once(void)
+{
+ static int initialized;
+ const char *debug;
+#ifdef _WIN32
+ WSADATA Data;
+#endif
+
+ if (initialized) {
+ return;
+ }
+ initialized = 1;
+
+#ifdef _WIN32
+ WSAStartup(MAKEWORD(2,0), &Data);
+ atexit(winsock_cleanup);
+#endif
+
+ loopback_addr.s_addr = htonl(INADDR_LOOPBACK);
+ loopback_mask = htonl(IN_CLASSA_NET);
+
+ debug = g_getenv("SLIRP_DEBUG");
+ if (debug) {
+ const GDebugKey keys[] = {
+ { "call", DBG_CALL },
+ { "misc", DBG_MISC },
+ { "error", DBG_ERROR },
+ { "tftp", DBG_TFTP },
+ };
+ slirp_debug = g_parse_debug_string(debug, keys, G_N_ELEMENTS(keys));
+ }
+
+
+}
+
+Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
+ struct in_addr vnetmask, struct in_addr vhost,
+ bool in6_enabled,
+ struct in6_addr vprefix_addr6, uint8_t vprefix_len,
+ struct in6_addr vhost6, const char *vhostname,
+ const char *tftp_server_name,
+ const char *tftp_path, const char *bootfile,
+ struct in_addr vdhcp_start, struct in_addr vnameserver,
+ struct in6_addr vnameserver6, const char **vdnssearch,
+ const char *vdomainname,
+ const SlirpCb *callbacks,
+ void *opaque)
+{
+ Slirp *slirp = g_malloc0(sizeof(Slirp));
+
+ slirp_init_once();
+
+ slirp->opaque = opaque;
+ slirp->cb = callbacks;
+ slirp->grand = g_rand_new();
+ slirp->restricted = restricted;
+
+ slirp->in_enabled = in_enabled;
+ slirp->in6_enabled = in6_enabled;
+
+ if_init(slirp);
+ ip_init(slirp);
+ ip6_init(slirp);
+
+ /* Initialise mbufs *after* setting the MTU */
+ m_init(slirp);
+
+ slirp->vnetwork_addr = vnetwork;
+ slirp->vnetwork_mask = vnetmask;
+ slirp->vhost_addr = vhost;
+ slirp->vprefix_addr6 = vprefix_addr6;
+ slirp->vprefix_len = vprefix_len;
+ slirp->vhost_addr6 = vhost6;
+ if (vhostname) {
+ slirp_pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname),
+ vhostname);
+ }
+ slirp->tftp_prefix = g_strdup(tftp_path);
+ slirp->bootp_filename = g_strdup(bootfile);
+ slirp->vdomainname = g_strdup(vdomainname);
+ slirp->vdhcp_startaddr = vdhcp_start;
+ slirp->vnameserver_addr = vnameserver;
+ slirp->vnameserver_addr6 = vnameserver6;
+ slirp->tftp_server_name = g_strdup(tftp_server_name);
+
+ if (vdnssearch) {
+ translate_dnssearch(slirp, vdnssearch);
+ }
+
+ return slirp;
+}
+
+void slirp_cleanup(Slirp *slirp)
+{
+ struct gfwd_list *e, *next;
+
+ for (e = slirp->guestfwd_list; e; e = next) {
+ next = e->ex_next;
+ g_free(e->ex_exec);
+ g_free(e);
+ }
+
+ ip_cleanup(slirp);
+ ip6_cleanup(slirp);
+ m_cleanup(slirp);
+
+ g_rand_free(slirp->grand);
+
+ g_free(slirp->vdnssearch);
+ g_free(slirp->tftp_prefix);
+ g_free(slirp->bootp_filename);
+ g_free(slirp->vdomainname);
+ g_free(slirp);
+}
+
+#define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
+#define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
+
+static void slirp_update_timeout(Slirp *slirp, uint32_t *timeout)
+{
+ uint32_t t;
+
+ if (*timeout <= TIMEOUT_FAST) {
+ return;
+ }
+
+ t = MIN(1000, *timeout);
+
+ /* If we have tcp timeout with slirp, then we will fill @timeout with
+ * more precise value.
+ */
+ if (slirp->time_fasttimo) {
+ *timeout = TIMEOUT_FAST;
+ return;
+ }
+ if (slirp->do_slowtimo) {
+ t = MIN(TIMEOUT_SLOW, t);
+ }
+ *timeout = t;
+}
+
+void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout,
+ SlirpAddPollCb add_poll, void *opaque)
+{
+ struct socket *so, *so_next;
+
+ /*
+ * First, TCP sockets
+ */
+
+ /*
+ * *_slowtimo needs calling if there are IP fragments
+ * in the fragment queue, or there are TCP connections active
+ */
+ slirp->do_slowtimo = ((slirp->tcb.so_next != &slirp->tcb) ||
+ (&slirp->ipq.ip_link != slirp->ipq.ip_link.next));
+
+ for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so_next) {
+ int events = 0;
+
+ so_next = so->so_next;
+
+ so->pollfds_idx = -1;
+
+ /*
+ * See if we need a tcp_fasttimo
+ */
+ if (slirp->time_fasttimo == 0 &&
+ so->so_tcpcb->t_flags & TF_DELACK) {
+ slirp->time_fasttimo = curtime; /* Flag when want a fasttimo */
+ }
+
+ /*
+ * NOFDREF can include still connecting to local-host,
+ * newly socreated() sockets etc. Don't want to select these.
+ */
+ if (so->so_state & SS_NOFDREF || so->s == -1) {
+ continue;
+ }
+
+ /*
+ * Set for reading sockets which are accepting
+ */
+ if (so->so_state & SS_FACCEPTCONN) {
+ so->pollfds_idx = add_poll(so->s,
+ SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
+ continue;
+ }
+
+ /*
+ * Set for writing sockets which are connecting
+ */
+ if (so->so_state & SS_ISFCONNECTING) {
+ so->pollfds_idx = add_poll(so->s,
+ SLIRP_POLL_OUT | SLIRP_POLL_ERR, opaque);
+ continue;
+ }
+
+ /*
+ * Set for writing if we are connected, can send more, and
+ * we have something to send
+ */
+ if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) {
+ events |= SLIRP_POLL_OUT | SLIRP_POLL_ERR;
+ }
+
+ /*
+ * Set for reading (and urgent data) if we are connected, can
+ * receive more, and we have room for it XXX /2 ?
+ */
+ if (CONN_CANFRCV(so) &&
+ (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) {
+ events |= SLIRP_POLL_IN | SLIRP_POLL_HUP |
+ SLIRP_POLL_ERR | SLIRP_POLL_PRI;
+ }
+
+ if (events) {
+ so->pollfds_idx = add_poll(so->s, events, opaque);
+ }
+ }
+
+ /*
+ * UDP sockets
+ */
+ for (so = slirp->udb.so_next; so != &slirp->udb; so = so_next) {
+ so_next = so->so_next;
+
+ so->pollfds_idx = -1;
+
+ /*
+ * See if it's timed out
+ */
+ if (so->so_expire) {
+ if (so->so_expire <= curtime) {
+ udp_detach(so);
+ continue;
+ } else {
+ slirp->do_slowtimo = true; /* Let socket expire */
+ }
+ }
+
+ /*
+ * When UDP packets are received from over the
+ * link, they're sendto()'d straight away, so
+ * no need for setting for writing
+ * Limit the number of packets queued by this session
+ * to 4. Note that even though we try and limit this
+ * to 4 packets, the session could have more queued
+ * if the packets needed to be fragmented
+ * (XXX <= 4 ?)
+ */
+ if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) {
+ so->pollfds_idx = add_poll(so->s,
+ SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
+ }
+ }
+
+ /*
+ * ICMP sockets
+ */
+ for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so_next) {
+ so_next = so->so_next;
+
+ so->pollfds_idx = -1;
+
+ /*
+ * See if it's timed out
+ */
+ if (so->so_expire) {
+ if (so->so_expire <= curtime) {
+ icmp_detach(so);
+ continue;
+ } else {
+ slirp->do_slowtimo = true; /* Let socket expire */
+ }
+ }
+
+ if (so->so_state & SS_ISFCONNECTED) {
+ so->pollfds_idx = add_poll(so->s,
+ SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque);
+ }
+ }
+
+ slirp_update_timeout(slirp, timeout);
+}
+
+void slirp_pollfds_poll(Slirp *slirp, int select_error,
+ SlirpGetREventsCb get_revents, void *opaque)
+{
+ struct socket *so, *so_next;
+ int ret;
+
+ curtime = slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS;
+
+ /*
+ * See if anything has timed out
+ */
+ if (slirp->time_fasttimo &&
+ ((curtime - slirp->time_fasttimo) >= TIMEOUT_FAST)) {
+ tcp_fasttimo(slirp);
+ slirp->time_fasttimo = 0;
+ }
+ if (slirp->do_slowtimo &&
+ ((curtime - slirp->last_slowtimo) >= TIMEOUT_SLOW)) {
+ ip_slowtimo(slirp);
+ tcp_slowtimo(slirp);
+ slirp->last_slowtimo = curtime;
+ }
+
+ /*
+ * Check sockets
+ */
+ if (!select_error) {
+ /*
+ * Check TCP sockets
+ */
+ for (so = slirp->tcb.so_next; so != &slirp->tcb;
+ so = so_next) {
+ int revents;
+
+ so_next = so->so_next;
+
+ revents = 0;
+ if (so->pollfds_idx != -1) {
+ revents = get_revents(so->pollfds_idx, opaque);
+ }
+
+ if (so->so_state & SS_NOFDREF || so->s == -1) {
+ continue;
+ }
+
+ /*
+ * Check for URG data
+ * This will soread as well, so no need to
+ * test for SLIRP_POLL_IN below if this succeeds
+ */
+ if (revents & SLIRP_POLL_PRI) {
+ ret = sorecvoob(so);
+ if (ret < 0) {
+ /* Socket error might have resulted in the socket being
+ * removed, do not try to do anything more with it. */
+ continue;
+ }
+ }
+ /*
+ * Check sockets for reading
+ */
+ else if (revents &
+ (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR)) {
+ /*
+ * Check for incoming connections
+ */
+ if (so->so_state & SS_FACCEPTCONN) {
+ tcp_connect(so);
+ continue;
+ } /* else */
+ ret = soread(so);
+
+ /* Output it if we read something */
+ if (ret > 0) {
+ tcp_output(sototcpcb(so));
+ }
+ if (ret < 0) {
+ /* Socket error might have resulted in the socket being
+ * removed, do not try to do anything more with it. */
+ continue;
+ }
+ }
+
+ /*
+ * Check sockets for writing
+ */
+ if (!(so->so_state & SS_NOFDREF) &&
+ (revents & (SLIRP_POLL_OUT | SLIRP_POLL_ERR))) {
+ /*
+ * Check for non-blocking, still-connecting sockets
+ */
+ if (so->so_state & SS_ISFCONNECTING) {
+ /* Connected */
+ so->so_state &= ~SS_ISFCONNECTING;
+
+ ret = send(so->s, (const void *) &ret, 0, 0);
+ if (ret < 0) {
+ /* XXXXX Must fix, zero bytes is a NOP */
+ if (errno == EAGAIN || errno == EWOULDBLOCK ||
+ errno == EINPROGRESS || errno == ENOTCONN) {
+ continue;
+ }
+
+ /* else failed */
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_NOFDREF;
+ }
+ /* else so->so_state &= ~SS_ISFCONNECTING; */
+
+ /*
+ * Continue tcp_input
+ */
+ tcp_input((struct mbuf *)NULL, sizeof(struct ip), so,
+ so->so_ffamily);
+ /* continue; */
+ } else {
+ ret = sowrite(so);
+ if (ret > 0) {
+ /* Call tcp_output in case we need to send a window
+ * update to the guest, otherwise it will be stuck
+ * until it sends a window probe. */
+ tcp_output(sototcpcb(so));
+ }
+ }
+ }
+ }
+
+ /*
+ * Now UDP sockets.
+ * Incoming packets are sent straight away, they're not buffered.
+ * Incoming UDP data isn't buffered either.
+ */
+ for (so = slirp->udb.so_next; so != &slirp->udb;
+ so = so_next) {
+ int revents;
+
+ so_next = so->so_next;
+
+ revents = 0;
+ if (so->pollfds_idx != -1) {
+ revents = get_revents(so->pollfds_idx, opaque);
+ }
+
+ if (so->s != -1 &&
+ (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) {
+ sorecvfrom(so);
+ }
+ }
+
+ /*
+ * Check incoming ICMP relies.
+ */
+ for (so = slirp->icmp.so_next; so != &slirp->icmp;
+ so = so_next) {
+ int revents;
+
+ so_next = so->so_next;
+
+ revents = 0;
+ if (so->pollfds_idx != -1) {
+ revents = get_revents(so->pollfds_idx, opaque);
+ }
+
+ if (so->s != -1 &&
+ (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) {
+ icmp_receive(so);
+ }
+ }
+ }
+
+ if_start(slirp);
+}
+
+static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
+{
+ struct slirp_arphdr *ah = (struct slirp_arphdr *)(pkt + ETH_HLEN);
+ uint8_t arp_reply[MAX(ETH_HLEN + sizeof(struct slirp_arphdr), 64)];
+ struct ethhdr *reh = (struct ethhdr *)arp_reply;
+ struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_reply + ETH_HLEN);
+ int ar_op;
+ struct gfwd_list *ex_ptr;
+
+ if (!slirp->in_enabled) {
+ return;
+ }
+
+ ar_op = ntohs(ah->ar_op);
+ switch(ar_op) {
+ case ARPOP_REQUEST:
+ if (ah->ar_tip == ah->ar_sip) {
+ /* Gratuitous ARP */
+ arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
+ return;
+ }
+
+ if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) ==
+ slirp->vnetwork_addr.s_addr) {
+ if (ah->ar_tip == slirp->vnameserver_addr.s_addr ||
+ ah->ar_tip == slirp->vhost_addr.s_addr)
+ goto arp_ok;
+ /* TODO: IPv6 */
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
+ if (ex_ptr->ex_addr.s_addr == ah->ar_tip)
+ goto arp_ok;
+ }
+ return;
+ arp_ok:
+ memset(arp_reply, 0, sizeof(arp_reply));
+
+ arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
+
+ /* ARP request for alias/dns mac address */
+ memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN);
+ memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
+ memcpy(&reh->h_source[2], &ah->ar_tip, 4);
+ reh->h_proto = htons(ETH_P_ARP);
+
+ rah->ar_hrd = htons(1);
+ rah->ar_pro = htons(ETH_P_IP);
+ rah->ar_hln = ETH_ALEN;
+ rah->ar_pln = 4;
+ rah->ar_op = htons(ARPOP_REPLY);
+ memcpy(rah->ar_sha, reh->h_source, ETH_ALEN);
+ rah->ar_sip = ah->ar_tip;
+ memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN);
+ rah->ar_tip = ah->ar_sip;
+ slirp_send_packet_all(slirp, arp_reply, sizeof(arp_reply));
+ }
+ break;
+ case ARPOP_REPLY:
+ arp_table_add(slirp, ah->ar_sip, ah->ar_sha);
+ break;
+ default:
+ break;
+ }
+}
+
+void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
+{
+ struct mbuf *m;
+ int proto;
+
+ if (pkt_len < ETH_HLEN)
+ return;
+
+ proto = (((uint16_t) pkt[12]) << 8) + pkt[13];
+ switch(proto) {
+ case ETH_P_ARP:
+ arp_input(slirp, pkt, pkt_len);
+ break;
+ case ETH_P_IP:
+ case ETH_P_IPV6:
+ m = m_get(slirp);
+ if (!m)
+ return;
+ /* Note: we add 2 to align the IP header on 4 bytes,
+ * and add the margin for the tcpiphdr overhead */
+ if (M_FREEROOM(m) < pkt_len + TCPIPHDR_DELTA + 2) {
+ m_inc(m, pkt_len + TCPIPHDR_DELTA + 2);
+ }
+ m->m_len = pkt_len + TCPIPHDR_DELTA + 2;
+ memcpy(m->m_data + TCPIPHDR_DELTA + 2, pkt, pkt_len);
+
+ m->m_data += TCPIPHDR_DELTA + 2 + ETH_HLEN;
+ m->m_len -= TCPIPHDR_DELTA + 2 + ETH_HLEN;
+
+ if (proto == ETH_P_IP) {
+ ip_input(m);
+ } else if (proto == ETH_P_IPV6) {
+ ip6_input(m);
+ }
+ break;
+
+ case ETH_P_NCSI:
+ ncsi_input(slirp, pkt, pkt_len);
+ break;
+
+ default:
+ break;
+ }
+}
+
+/* Prepare the IPv4 packet to be sent to the ethernet device. Returns 1 if no
+ * packet should be sent, 0 if the packet must be re-queued, 2 if the packet
+ * is ready to go.
+ */
+static int if_encap4(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh,
+ uint8_t ethaddr[ETH_ALEN])
+{
+ const struct ip *iph = (const struct ip *)ifm->m_data;
+
+ if (iph->ip_dst.s_addr == 0) {
+ /* 0.0.0.0 can not be a destination address, something went wrong,
+ * avoid making it worse */
+ return 1;
+ }
+ if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) {
+ uint8_t arp_req[ETH_HLEN + sizeof(struct slirp_arphdr)];
+ struct ethhdr *reh = (struct ethhdr *)arp_req;
+ struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_req + ETH_HLEN);
+
+ if (!ifm->resolution_requested) {
+ /* If the client addr is not known, send an ARP request */
+ memset(reh->h_dest, 0xff, ETH_ALEN);
+ memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
+ memcpy(&reh->h_source[2], &slirp->vhost_addr, 4);
+ reh->h_proto = htons(ETH_P_ARP);
+ rah->ar_hrd = htons(1);
+ rah->ar_pro = htons(ETH_P_IP);
+ rah->ar_hln = ETH_ALEN;
+ rah->ar_pln = 4;
+ rah->ar_op = htons(ARPOP_REQUEST);
+
+ /* source hw addr */
+ memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4);
+ memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4);
+
+ /* source IP */
+ rah->ar_sip = slirp->vhost_addr.s_addr;
+
+ /* target hw addr (none) */
+ memset(rah->ar_tha, 0, ETH_ALEN);
+
+ /* target IP */
+ rah->ar_tip = iph->ip_dst.s_addr;
+ slirp->client_ipaddr = iph->ip_dst;
+ slirp_send_packet_all(slirp, arp_req, sizeof(arp_req));
+ ifm->resolution_requested = true;
+
+ /* Expire request and drop outgoing packet after 1 second */
+ ifm->expiration_date =
+ slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL;
+ }
+ return 0;
+ } else {
+ memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4);
+ /* XXX: not correct */
+ memcpy(&eh->h_source[2], &slirp->vhost_addr, 4);
+ eh->h_proto = htons(ETH_P_IP);
+
+ /* Send this */
+ return 2;
+ }
+}
+
+/* Prepare the IPv6 packet to be sent to the ethernet device. Returns 1 if no
+ * packet should be sent, 0 if the packet must be re-queued, 2 if the packet
+ * is ready to go.
+ */
+static int if_encap6(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh,
+ uint8_t ethaddr[ETH_ALEN])
+{
+ const struct ip6 *ip6h = mtod(ifm, const struct ip6 *);
+ if (!ndp_table_search(slirp, ip6h->ip_dst, ethaddr)) {
+ if (!ifm->resolution_requested) {
+ ndp_send_ns(slirp, ip6h->ip_dst);
+ ifm->resolution_requested = true;
+ ifm->expiration_date = slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL;
+ }
+ return 0;
+ } else {
+ eh->h_proto = htons(ETH_P_IPV6);
+ in6_compute_ethaddr(ip6h->ip_src, eh->h_source);
+
+ /* Send this */
+ return 2;
+ }
+}
+
+/* Output the IP packet to the ethernet device. Returns 0 if the packet must be
+ * re-queued.
+ */
+int if_encap(Slirp *slirp, struct mbuf *ifm)
+{
+ uint8_t buf[1600];
+ struct ethhdr *eh = (struct ethhdr *)buf;
+ uint8_t ethaddr[ETH_ALEN];
+ const struct ip *iph = (const struct ip *)ifm->m_data;
+ int ret;
+
+ if (ifm->m_len + ETH_HLEN > sizeof(buf)) {
+ return 1;
+ }
+
+ switch (iph->ip_v) {
+ case IPVERSION:
+ ret = if_encap4(slirp, ifm, eh, ethaddr);
+ if (ret < 2) {
+ return ret;
+ }
+ break;
+
+ case IP6VERSION:
+ ret = if_encap6(slirp, ifm, eh, ethaddr);
+ if (ret < 2) {
+ return ret;
+ }
+ break;
+
+ default:
+ g_assert_not_reached();
+ break;
+ }
+
+ memcpy(eh->h_dest, ethaddr, ETH_ALEN);
+ DEBUG_ARG("src = %02x:%02x:%02x:%02x:%02x:%02x",
+ eh->h_source[0], eh->h_source[1], eh->h_source[2],
+ eh->h_source[3], eh->h_source[4], eh->h_source[5]);
+ DEBUG_ARG("dst = %02x:%02x:%02x:%02x:%02x:%02x",
+ eh->h_dest[0], eh->h_dest[1], eh->h_dest[2],
+ eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]);
+ memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len);
+ slirp_send_packet_all(slirp, buf, ifm->m_len + ETH_HLEN);
+ return 1;
+}
+
+/* Drop host forwarding rule, return 0 if found. */
+/* TODO: IPv6 */
+int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
+ int host_port)
+{
+ struct socket *so;
+ struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb);
+ struct sockaddr_in addr;
+ int port = htons(host_port);
+ socklen_t addr_len;
+
+ for (so = head->so_next; so != head; so = so->so_next) {
+ addr_len = sizeof(addr);
+ if ((so->so_state & SS_HOSTFWD) &&
+ getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 &&
+ addr.sin_addr.s_addr == host_addr.s_addr &&
+ addr.sin_port == port) {
+ so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
+ closesocket(so->s);
+ sofree(so);
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+/* TODO: IPv6 */
+int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
+ int host_port, struct in_addr guest_addr, int guest_port)
+{
+ if (!guest_addr.s_addr) {
+ guest_addr = slirp->vdhcp_startaddr;
+ }
+ if (is_udp) {
+ if (!udp_listen(slirp, host_addr.s_addr, htons(host_port),
+ guest_addr.s_addr, htons(guest_port), SS_HOSTFWD))
+ return -1;
+ } else {
+ if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port),
+ guest_addr.s_addr, htons(guest_port), SS_HOSTFWD))
+ return -1;
+ }
+ return 0;
+}
+
+/* TODO: IPv6 */
+static bool
+check_guestfwd(Slirp *slirp, struct in_addr *guest_addr, int guest_port)
+{
+ struct gfwd_list *tmp_ptr;
+
+ if (!guest_addr->s_addr) {
+ guest_addr->s_addr = slirp->vnetwork_addr.s_addr |
+ (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr);
+ }
+ if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) !=
+ slirp->vnetwork_addr.s_addr ||
+ guest_addr->s_addr == slirp->vhost_addr.s_addr ||
+ guest_addr->s_addr == slirp->vnameserver_addr.s_addr) {
+ return false;
+ }
+
+ /* check if the port is "bound" */
+ for (tmp_ptr = slirp->guestfwd_list; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
+ if (guest_port == tmp_ptr->ex_fport &&
+ guest_addr->s_addr == tmp_ptr->ex_addr.s_addr)
+ return false;
+ }
+
+ return true;
+}
+
+int slirp_add_exec(Slirp *slirp, const char *cmdline,
+ struct in_addr *guest_addr, int guest_port)
+{
+ if (!check_guestfwd(slirp, guest_addr, guest_port)) {
+ return -1;
+ }
+
+ add_exec(&slirp->guestfwd_list, cmdline, *guest_addr, htons(guest_port));
+ return 0;
+}
+
+int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque,
+ struct in_addr *guest_addr, int guest_port)
+{
+ if (!check_guestfwd(slirp, guest_addr, guest_port)) {
+ return -1;
+ }
+
+ add_guestfwd(&slirp->guestfwd_list, write_cb, opaque,
+ *guest_addr, htons(guest_port));
+ return 0;
+}
+
+ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags)
+{
+ if (so->s == -1 && so->guestfwd) {
+ /* XXX this blocks entire thread. Rewrite to use
+ * qemu_chr_fe_write and background I/O callbacks */
+ so->guestfwd->write_cb(buf, len, so->guestfwd->opaque);
+ return len;
+ }
+
+ if (so->s == -1) {
+ /*
+ * This should in theory not happen but it is hard to be
+ * sure because some code paths will end up with so->s == -1
+ * on a failure but don't dispose of the struct socket.
+ * Check specifically, so we don't pass -1 to send().
+ */
+ errno = EBADF;
+ return -1;
+ }
+
+ return send(so->s, buf, len, flags);
+}
+
+struct socket *
+slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port)
+{
+ struct socket *so;
+
+ /* TODO: IPv6 */
+ for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
+ if (so->so_faddr.s_addr == guest_addr.s_addr &&
+ htons(so->so_fport) == guest_port) {
+ return so;
+ }
+ }
+ return NULL;
+}
+
+size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
+ int guest_port)
+{
+ struct iovec iov[2];
+ struct socket *so;
+
+ so = slirp_find_ctl_socket(slirp, guest_addr, guest_port);
+
+ if (!so || so->so_state & SS_NOFDREF) {
+ return 0;
+ }
+
+ if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) {
+ return 0;
+ }
+
+ return sopreprbuf(so, iov, NULL);
+}
+
+void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port,
+ const uint8_t *buf, int size)
+{
+ int ret;
+ struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port);
+
+ if (!so)
+ return;
+
+ ret = soreadbuf(so, (const char *)buf, size);
+
+ if (ret > 0)
+ tcp_output(sototcpcb(so));
+}
+
+void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len)
+{
+ ssize_t ret = slirp->cb->send_packet(buf, len, slirp->opaque);
+
+ if (ret < 0) {
+ g_critical("Failed to send packet, ret: %ld", (long) ret);
+ } else if (ret < len) {
+ DEBUG_ERROR("send_packet() didn't send all data: %ld < %lu",
+ (long) ret, (unsigned long) len);
+ }
+}
--- /dev/null
+#ifndef SLIRP_H
+#define SLIRP_H
+
+#ifdef _WIN32
+
+/* as defined in sdkddkver.h */
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT 0x0600 /* Vista */
+#endif
+/* reduces the number of implicitly included headers */
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
+# include <winsock2.h>
+# include <windows.h>
+# include <ws2tcpip.h>
+# include <sys/timeb.h>
+# include <iphlpapi.h>
+
+#else
+# if !defined(__HAIKU__)
+# define O_BINARY 0
+# endif
+#endif
+
+#ifndef _WIN32
+#include <sys/uio.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#endif
+
+#ifdef __APPLE__
+# include <sys/filio.h>
+#endif
+
+/* Avoid conflicting with the libc insque() and remque(), which
+ have different prototypes. */
+#define insque slirp_insque
+#define remque slirp_remque
+#define quehead slirp_quehead
+
+#include "debug.h"
+#include "util.h"
+#include "qtailq.h"
+
+#include "libslirp.h"
+#include "ip.h"
+#include "ip6.h"
+#include "tcp.h"
+#include "tcp_timer.h"
+#include "tcp_var.h"
+#include "tcpip.h"
+#include "udp.h"
+#include "ip_icmp.h"
+#include "ip6_icmp.h"
+#include "mbuf.h"
+#include "sbuf.h"
+#include "socket.h"
+#include "if.h"
+#include "main.h"
+#include "misc.h"
+
+#include "bootp.h"
+#include "tftp.h"
+
+#define ARPOP_REQUEST 1 /* ARP request */
+#define ARPOP_REPLY 2 /* ARP reply */
+
+struct ethhdr {
+ unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
+ unsigned char h_source[ETH_ALEN]; /* source ether addr */
+ unsigned short h_proto; /* packet type ID field */
+};
+
+struct slirp_arphdr {
+ unsigned short ar_hrd; /* format of hardware address */
+ unsigned short ar_pro; /* format of protocol address */
+ unsigned char ar_hln; /* length of hardware address */
+ unsigned char ar_pln; /* length of protocol address */
+ unsigned short ar_op; /* ARP opcode (command) */
+
+ /*
+ * Ethernet looks like this : This bit is variable sized however...
+ */
+ unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
+ uint32_t ar_sip; /* sender IP address */
+ unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
+ uint32_t ar_tip; /* target IP address */
+} SLIRP_PACKED;
+
+#define ARP_TABLE_SIZE 16
+
+typedef struct ArpTable {
+ struct slirp_arphdr table[ARP_TABLE_SIZE];
+ int next_victim;
+} ArpTable;
+
+void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
+
+bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
+ uint8_t out_ethaddr[ETH_ALEN]);
+
+struct ndpentry {
+ unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */
+ struct in6_addr ip_addr; /* sender IP address */
+};
+
+#define NDP_TABLE_SIZE 16
+
+typedef struct NdpTable {
+ struct ndpentry table[NDP_TABLE_SIZE];
+ int next_victim;
+} NdpTable;
+
+void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
+ uint8_t ethaddr[ETH_ALEN]);
+bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
+ uint8_t out_ethaddr[ETH_ALEN]);
+
+struct Slirp {
+ QTAILQ_ENTRY(Slirp) entry;
+ unsigned time_fasttimo;
+ unsigned last_slowtimo;
+ bool do_slowtimo;
+
+ bool in_enabled, in6_enabled;
+
+ /* virtual network configuration */
+ struct in_addr vnetwork_addr;
+ struct in_addr vnetwork_mask;
+ struct in_addr vhost_addr;
+ struct in6_addr vprefix_addr6;
+ uint8_t vprefix_len;
+ struct in6_addr vhost_addr6;
+ struct in_addr vdhcp_startaddr;
+ struct in_addr vnameserver_addr;
+ struct in6_addr vnameserver_addr6;
+
+ struct in_addr client_ipaddr;
+ char client_hostname[33];
+
+ int restricted;
+ struct gfwd_list *guestfwd_list;
+
+ /* mbuf states */
+ struct quehead m_freelist;
+ struct quehead m_usedlist;
+ int mbuf_alloced;
+
+ /* if states */
+ struct quehead if_fastq; /* fast queue (for interactive data) */
+ struct quehead if_batchq; /* queue for non-interactive data */
+ bool if_start_busy; /* avoid if_start recursion */
+
+ /* ip states */
+ struct ipq ipq; /* ip reass. queue */
+ uint16_t ip_id; /* ip packet ctr, for ids */
+
+ /* bootp/dhcp states */
+ BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
+ char *bootp_filename;
+ size_t vdnssearch_len;
+ uint8_t *vdnssearch;
+ char *vdomainname;
+
+ /* tcp states */
+ struct socket tcb;
+ struct socket *tcp_last_so;
+ tcp_seq tcp_iss; /* tcp initial send seq # */
+ uint32_t tcp_now; /* for RFC 1323 timestamps */
+
+ /* udp states */
+ struct socket udb;
+ struct socket *udp_last_so;
+
+ /* icmp states */
+ struct socket icmp;
+ struct socket *icmp_last_so;
+
+ /* tftp states */
+ char *tftp_prefix;
+ struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
+ char *tftp_server_name;
+
+ ArpTable arp_table;
+ NdpTable ndp_table;
+
+ GRand *grand;
+ void *ra_timer;
+
+ const SlirpCb *cb;
+ void *opaque;
+};
+
+void if_start(Slirp *);
+
+int get_dns_addr(struct in_addr *pdns_addr);
+int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id);
+
+/* ncsi.c */
+void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
+
+#ifndef _WIN32
+#include <netdb.h>
+#endif
+
+
+extern bool slirp_do_keepalive;
+
+#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
+
+/* dnssearch.c */
+int translate_dnssearch(Slirp *s, const char ** names);
+
+/* cksum.c */
+int cksum(struct mbuf *m, int len);
+int ip6_cksum(struct mbuf *m);
+
+/* if.c */
+void if_init(Slirp *);
+void if_output(struct socket *, struct mbuf *);
+
+/* ip_input.c */
+void ip_init(Slirp *);
+void ip_cleanup(Slirp *);
+void ip_input(struct mbuf *);
+void ip_slowtimo(Slirp *);
+void ip_stripoptions(register struct mbuf *, struct mbuf *);
+
+/* ip_output.c */
+int ip_output(struct socket *, struct mbuf *);
+
+/* ip6_input.c */
+void ip6_init(Slirp *);
+void ip6_cleanup(Slirp *);
+void ip6_input(struct mbuf *);
+
+/* ip6_output */
+int ip6_output(struct socket *, struct mbuf *, int fast);
+
+/* tcp_input.c */
+void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
+int tcp_mss(register struct tcpcb *, unsigned);
+
+/* tcp_output.c */
+int tcp_output(register struct tcpcb *);
+void tcp_setpersist(register struct tcpcb *);
+
+/* tcp_subr.c */
+void tcp_init(Slirp *);
+void tcp_cleanup(Slirp *);
+void tcp_template(struct tcpcb *);
+void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
+ register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
+struct tcpcb * tcp_newtcpcb(struct socket *);
+struct tcpcb * tcp_close(register struct tcpcb *);
+void tcp_sockclosed(struct tcpcb *);
+int tcp_fconnect(struct socket *, unsigned short af);
+void tcp_connect(struct socket *);
+int tcp_attach(struct socket *);
+uint8_t tcp_tos(struct socket *);
+int tcp_emu(struct socket *, struct mbuf *);
+int tcp_ctl(struct socket *);
+struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
+
+struct socket *
+slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port);
+
+void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+#include "ip_icmp.h"
+#ifdef __sun__
+#include <sys/filio.h>
+#endif
+
+static void sofcantrcvmore(struct socket *so);
+static void sofcantsendmore(struct socket *so);
+
+struct socket *solookup(struct socket **last, struct socket *head,
+ struct sockaddr_storage *lhost, struct sockaddr_storage *fhost)
+{
+ struct socket *so = *last;
+
+ /* Optimisation */
+ if (so != head && sockaddr_equal(&(so->lhost.ss), lhost)
+ && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
+ return so;
+ }
+
+ for (so = head->so_next; so != head; so = so->so_next) {
+ if (sockaddr_equal(&(so->lhost.ss), lhost)
+ && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) {
+ *last = so;
+ return so;
+ }
+ }
+
+ return (struct socket *)NULL;
+}
+
+/*
+ * Create a new socket, initialise the fields
+ * It is the responsibility of the caller to
+ * insque() it into the correct linked-list
+ */
+struct socket *
+socreate(Slirp *slirp)
+{
+ struct socket *so = g_new(struct socket, 1);
+
+ memset(so, 0, sizeof(struct socket));
+ so->so_state = SS_NOFDREF;
+ so->s = -1;
+ so->slirp = slirp;
+ so->pollfds_idx = -1;
+
+ return so;
+}
+
+/*
+ * Remove references to so from the given message queue.
+ */
+static void
+soqfree(struct socket *so, struct quehead *qh)
+{
+ struct mbuf *ifq;
+
+ for (ifq = (struct mbuf *) qh->qh_link;
+ (struct quehead *) ifq != qh;
+ ifq = ifq->ifq_next) {
+ if (ifq->ifq_so == so) {
+ struct mbuf *ifm;
+ ifq->ifq_so = NULL;
+ for (ifm = ifq->ifs_next; ifm != ifq; ifm = ifm->ifs_next) {
+ ifm->ifq_so = NULL;
+ }
+ }
+ }
+}
+
+/*
+ * remque and free a socket, clobber cache
+ */
+void
+sofree(struct socket *so)
+{
+ Slirp *slirp = so->slirp;
+
+ soqfree(so, &slirp->if_fastq);
+ soqfree(so, &slirp->if_batchq);
+
+ if (so == slirp->tcp_last_so) {
+ slirp->tcp_last_so = &slirp->tcb;
+ } else if (so == slirp->udp_last_so) {
+ slirp->udp_last_so = &slirp->udb;
+ } else if (so == slirp->icmp_last_so) {
+ slirp->icmp_last_so = &slirp->icmp;
+ }
+ m_free(so->so_m);
+
+ if(so->so_next && so->so_prev)
+ remque(so); /* crashes if so is not in a queue */
+
+ if (so->so_tcpcb) {
+ free(so->so_tcpcb);
+ }
+ g_free(so);
+}
+
+size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np)
+{
+ int n, lss, total;
+ struct sbuf *sb = &so->so_snd;
+ int len = sb->sb_datalen - sb->sb_cc;
+ int mss = so->so_tcpcb->t_maxseg;
+
+ DEBUG_CALL("sopreprbuf");
+ DEBUG_ARG("so = %p", so);
+
+ if (len <= 0)
+ return 0;
+
+ iov[0].iov_base = sb->sb_wptr;
+ iov[1].iov_base = NULL;
+ iov[1].iov_len = 0;
+ if (sb->sb_wptr < sb->sb_rptr) {
+ iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
+ /* Should never succeed, but... */
+ if (iov[0].iov_len > len)
+ iov[0].iov_len = len;
+ if (iov[0].iov_len > mss)
+ iov[0].iov_len -= iov[0].iov_len%mss;
+ n = 1;
+ } else {
+ iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
+ /* Should never succeed, but... */
+ if (iov[0].iov_len > len) iov[0].iov_len = len;
+ len -= iov[0].iov_len;
+ if (len) {
+ iov[1].iov_base = sb->sb_data;
+ iov[1].iov_len = sb->sb_rptr - sb->sb_data;
+ if(iov[1].iov_len > len)
+ iov[1].iov_len = len;
+ total = iov[0].iov_len + iov[1].iov_len;
+ if (total > mss) {
+ lss = total%mss;
+ if (iov[1].iov_len > lss) {
+ iov[1].iov_len -= lss;
+ n = 2;
+ } else {
+ lss -= iov[1].iov_len;
+ iov[0].iov_len -= lss;
+ n = 1;
+ }
+ } else
+ n = 2;
+ } else {
+ if (iov[0].iov_len > mss)
+ iov[0].iov_len -= iov[0].iov_len%mss;
+ n = 1;
+ }
+ }
+ if (np)
+ *np = n;
+
+ return iov[0].iov_len + (n - 1) * iov[1].iov_len;
+}
+
+/*
+ * Read from so's socket into sb_snd, updating all relevant sbuf fields
+ * NOTE: This will only be called if it is select()ed for reading, so
+ * a read() of 0 (or less) means it's disconnected
+ */
+int
+soread(struct socket *so)
+{
+ int n, nn;
+ struct sbuf *sb = &so->so_snd;
+ struct iovec iov[2];
+
+ DEBUG_CALL("soread");
+ DEBUG_ARG("so = %p", so);
+
+ /*
+ * No need to check if there's enough room to read.
+ * soread wouldn't have been called if there weren't
+ */
+ sopreprbuf(so, iov, &n);
+
+ nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0);
+ if (nn <= 0) {
+ if (nn < 0 && (errno == EINTR || errno == EAGAIN))
+ return 0;
+ else {
+ int err;
+ socklen_t elen = sizeof err;
+ struct sockaddr_storage addr;
+ struct sockaddr *paddr = (struct sockaddr *) &addr;
+ socklen_t alen = sizeof addr;
+
+ err = errno;
+ if (nn == 0) {
+ if (getpeername(so->s, paddr, &alen) < 0) {
+ err = errno;
+ } else {
+ getsockopt(so->s, SOL_SOCKET, SO_ERROR,
+ &err, &elen);
+ }
+ }
+
+ DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s",
+ nn, errno,strerror(errno));
+ sofcantrcvmore(so);
+
+ if (err == ECONNRESET || err == ECONNREFUSED
+ || err == ENOTCONN || err == EPIPE) {
+ tcp_drop(sototcpcb(so), err);
+ } else {
+ tcp_sockclosed(sototcpcb(so));
+ }
+ return -1;
+ }
+ }
+
+ /*
+ * If there was no error, try and read the second time round
+ * We read again if n = 2 (ie, there's another part of the buffer)
+ * and we read as much as we could in the first read
+ * We don't test for <= 0 this time, because there legitimately
+ * might not be any more data (since the socket is non-blocking),
+ * a close will be detected on next iteration.
+ * A return of -1 won't (shouldn't) happen, since it didn't happen above
+ */
+ if (n == 2 && nn == iov[0].iov_len) {
+ int ret;
+ ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0);
+ if (ret > 0)
+ nn += ret;
+ }
+
+ DEBUG_MISC(" ... read nn = %d bytes", nn);
+
+ /* Update fields */
+ sb->sb_cc += nn;
+ sb->sb_wptr += nn;
+ if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
+ sb->sb_wptr -= sb->sb_datalen;
+ return nn;
+}
+
+int soreadbuf(struct socket *so, const char *buf, int size)
+{
+ int n, nn, copy = size;
+ struct sbuf *sb = &so->so_snd;
+ struct iovec iov[2];
+
+ DEBUG_CALL("soreadbuf");
+ DEBUG_ARG("so = %p", so);
+
+ /*
+ * No need to check if there's enough room to read.
+ * soread wouldn't have been called if there weren't
+ */
+ if (sopreprbuf(so, iov, &n) < size)
+ goto err;
+
+ nn = MIN(iov[0].iov_len, copy);
+ memcpy(iov[0].iov_base, buf, nn);
+
+ copy -= nn;
+ buf += nn;
+
+ if (copy == 0)
+ goto done;
+
+ memcpy(iov[1].iov_base, buf, copy);
+
+done:
+ /* Update fields */
+ sb->sb_cc += size;
+ sb->sb_wptr += size;
+ if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
+ sb->sb_wptr -= sb->sb_datalen;
+ return size;
+err:
+
+ sofcantrcvmore(so);
+ tcp_sockclosed(sototcpcb(so));
+ g_critical("soreadbuf buffer too small");
+ return -1;
+}
+
+/*
+ * Get urgent data
+ *
+ * When the socket is created, we set it SO_OOBINLINE,
+ * so when OOB data arrives, we soread() it and everything
+ * in the send buffer is sent as urgent data
+ */
+int
+sorecvoob(struct socket *so)
+{
+ struct tcpcb *tp = sototcpcb(so);
+ int ret;
+
+ DEBUG_CALL("sorecvoob");
+ DEBUG_ARG("so = %p", so);
+
+ /*
+ * We take a guess at how much urgent data has arrived.
+ * In most situations, when urgent data arrives, the next
+ * read() should get all the urgent data. This guess will
+ * be wrong however if more data arrives just after the
+ * urgent data, or the read() doesn't return all the
+ * urgent data.
+ */
+ ret = soread(so);
+ if (ret > 0) {
+ tp->snd_up = tp->snd_una + so->so_snd.sb_cc;
+ tp->t_force = 1;
+ tcp_output(tp);
+ tp->t_force = 0;
+ }
+
+ return ret;
+}
+
+/*
+ * Send urgent data
+ * There's a lot duplicated code here, but...
+ */
+int
+sosendoob(struct socket *so)
+{
+ struct sbuf *sb = &so->so_rcv;
+ char buff[2048]; /* XXX Shouldn't be sending more oob data than this */
+
+ int n;
+
+ DEBUG_CALL("sosendoob");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
+
+ if (so->so_urgc > 2048)
+ so->so_urgc = 2048; /* XXXX */
+
+ if (sb->sb_rptr < sb->sb_wptr) {
+ /* We can send it directly */
+ n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
+ } else {
+ /*
+ * Since there's no sendv or sendtov like writev,
+ * we must copy all data to a linear buffer then
+ * send it all
+ */
+ uint32_t urgc = so->so_urgc;
+ int len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
+ if (len > urgc) {
+ len = urgc;
+ }
+ memcpy(buff, sb->sb_rptr, len);
+ urgc -= len;
+ if (urgc) {
+ n = sb->sb_wptr - sb->sb_data;
+ if (n > urgc) {
+ n = urgc;
+ }
+ memcpy((buff + len), sb->sb_data, n);
+ len += n;
+ }
+ n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
+#ifdef DEBUG
+ if (n != len) {
+ DEBUG_ERROR("Didn't send all data urgently XXXXX");
+ }
+#endif
+ }
+
+ if (n < 0) {
+ return n;
+ }
+ so->so_urgc -= n;
+ DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left", n, so->so_urgc);
+
+ sb->sb_cc -= n;
+ sb->sb_rptr += n;
+ if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
+ sb->sb_rptr -= sb->sb_datalen;
+
+ return n;
+}
+
+/*
+ * Write data from so_rcv to so's socket,
+ * updating all sbuf field as necessary
+ */
+int
+sowrite(struct socket *so)
+{
+ int n,nn;
+ struct sbuf *sb = &so->so_rcv;
+ int len = sb->sb_cc;
+ struct iovec iov[2];
+
+ DEBUG_CALL("sowrite");
+ DEBUG_ARG("so = %p", so);
+
+ if (so->so_urgc) {
+ uint32_t expected = so->so_urgc;
+ if (sosendoob(so) < expected) {
+ /* Treat a short write as a fatal error too,
+ * rather than continuing on and sending the urgent
+ * data as if it were non-urgent and leaving the
+ * so_urgc count wrong.
+ */
+ goto err_disconnected;
+ }
+ if (sb->sb_cc == 0)
+ return 0;
+ }
+
+ /*
+ * No need to check if there's something to write,
+ * sowrite wouldn't have been called otherwise
+ */
+
+ iov[0].iov_base = sb->sb_rptr;
+ iov[1].iov_base = NULL;
+ iov[1].iov_len = 0;
+ if (sb->sb_rptr < sb->sb_wptr) {
+ iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
+ /* Should never succeed, but... */
+ if (iov[0].iov_len > len) iov[0].iov_len = len;
+ n = 1;
+ } else {
+ iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
+ if (iov[0].iov_len > len) iov[0].iov_len = len;
+ len -= iov[0].iov_len;
+ if (len) {
+ iov[1].iov_base = sb->sb_data;
+ iov[1].iov_len = sb->sb_wptr - sb->sb_data;
+ if (iov[1].iov_len > len) iov[1].iov_len = len;
+ n = 2;
+ } else
+ n = 1;
+ }
+ /* Check if there's urgent data to send, and if so, send it */
+
+ nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0);
+ /* This should never happen, but people tell me it does *shrug* */
+ if (nn < 0 && (errno == EAGAIN || errno == EINTR))
+ return 0;
+
+ if (nn <= 0) {
+ goto err_disconnected;
+ }
+
+ if (n == 2 && nn == iov[0].iov_len) {
+ int ret;
+ ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0);
+ if (ret > 0)
+ nn += ret;
+ }
+ DEBUG_MISC(" ... wrote nn = %d bytes", nn);
+
+ /* Update sbuf */
+ sb->sb_cc -= nn;
+ sb->sb_rptr += nn;
+ if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
+ sb->sb_rptr -= sb->sb_datalen;
+
+ /*
+ * If in DRAIN mode, and there's no more data, set
+ * it CANTSENDMORE
+ */
+ if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0)
+ sofcantsendmore(so);
+
+ return nn;
+
+err_disconnected:
+ DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d",
+ so->so_state, errno);
+ sofcantsendmore(so);
+ tcp_sockclosed(sototcpcb(so));
+ return -1;
+}
+
+/*
+ * recvfrom() a UDP socket
+ */
+void
+sorecvfrom(struct socket *so)
+{
+ struct sockaddr_storage addr;
+ struct sockaddr_storage saddr, daddr;
+ socklen_t addrlen = sizeof(struct sockaddr_storage);
+
+ DEBUG_CALL("sorecvfrom");
+ DEBUG_ARG("so = %p", so);
+
+ if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */
+ char buff[256];
+ int len;
+
+ len = recvfrom(so->s, buff, 256, 0,
+ (struct sockaddr *)&addr, &addrlen);
+ /* XXX Check if reply is "correct"? */
+
+ if(len == -1 || len == 0) {
+ uint8_t code=ICMP_UNREACH_PORT;
+
+ if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
+ else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
+
+ DEBUG_MISC(" udp icmp rx errno = %d-%s",
+ errno,strerror(errno));
+ icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
+ } else {
+ icmp_reflect(so->so_m);
+ so->so_m = NULL; /* Don't m_free() it again! */
+ }
+ /* No need for this socket anymore, udp_detach it */
+ udp_detach(so);
+ } else { /* A "normal" UDP packet */
+ struct mbuf *m;
+ int len;
+#ifdef _WIN32
+ unsigned long n;
+#else
+ int n;
+#endif
+
+ if (ioctlsocket(so->s, FIONREAD, &n) != 0) {
+ DEBUG_MISC(" ioctlsocket errno = %d-%s\n",
+ errno,strerror(errno));
+ return;
+ }
+ if (n == 0) {
+ return;
+ }
+
+ m = m_get(so->slirp);
+ if (!m) {
+ return;
+ }
+ switch (so->so_ffamily) {
+ case AF_INET:
+ m->m_data += IF_MAXLINKHDR + sizeof(struct udpiphdr);
+ break;
+ case AF_INET6:
+ m->m_data += IF_MAXLINKHDR + sizeof(struct ip6)
+ + sizeof(struct udphdr);
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+
+ /*
+ * XXX Shouldn't FIONREAD packets destined for port 53,
+ * but I don't know the max packet size for DNS lookups
+ */
+ len = M_FREEROOM(m);
+ /* if (so->so_fport != htons(53)) { */
+
+ if (n > len) {
+ n = (m->m_data - m->m_dat) + m->m_len + n + 1;
+ m_inc(m, n);
+ len = M_FREEROOM(m);
+ }
+ /* } */
+
+ m->m_len = recvfrom(so->s, m->m_data, len, 0,
+ (struct sockaddr *)&addr, &addrlen);
+ DEBUG_MISC(" did recvfrom %d, errno = %d-%s",
+ m->m_len, errno,strerror(errno));
+ if(m->m_len<0) {
+ /* Report error as ICMP */
+ switch (so->so_lfamily) {
+ uint8_t code;
+ case AF_INET:
+ code = ICMP_UNREACH_PORT;
+
+ if (errno == EHOSTUNREACH) {
+ code = ICMP_UNREACH_HOST;
+ } else if (errno == ENETUNREACH) {
+ code = ICMP_UNREACH_NET;
+ }
+
+ DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i", code);
+ icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
+ break;
+ case AF_INET6:
+ code = ICMP6_UNREACH_PORT;
+
+ if (errno == EHOSTUNREACH) {
+ code = ICMP6_UNREACH_ADDRESS;
+ } else if (errno == ENETUNREACH) {
+ code = ICMP6_UNREACH_NO_ROUTE;
+ }
+
+ DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i", code);
+ icmp6_send_error(so->so_m, ICMP6_UNREACH, code);
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+ m_free(m);
+ } else {
+ /*
+ * Hack: domain name lookup will be used the most for UDP,
+ * and since they'll only be used once there's no need
+ * for the 4 minute (or whatever) timeout... So we time them
+ * out much quicker (10 seconds for now...)
+ */
+ if (so->so_expire) {
+ if (so->so_fport == htons(53))
+ so->so_expire = curtime + SO_EXPIREFAST;
+ else
+ so->so_expire = curtime + SO_EXPIRE;
+ }
+
+ /*
+ * If this packet was destined for CTL_ADDR,
+ * make it look like that's where it came from
+ */
+ saddr = addr;
+ sotranslate_in(so, &saddr);
+ daddr = so->lhost.ss;
+
+ switch (so->so_ffamily) {
+ case AF_INET:
+ udp_output(so, m, (struct sockaddr_in *) &saddr,
+ (struct sockaddr_in *) &daddr,
+ so->so_iptos);
+ break;
+ case AF_INET6:
+ udp6_output(so, m, (struct sockaddr_in6 *) &saddr,
+ (struct sockaddr_in6 *) &daddr);
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+ } /* rx error */
+ } /* if ping packet */
+}
+
+/*
+ * sendto() a socket
+ */
+int
+sosendto(struct socket *so, struct mbuf *m)
+{
+ int ret;
+ struct sockaddr_storage addr;
+
+ DEBUG_CALL("sosendto");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+
+ addr = so->fhost.ss;
+ DEBUG_CALL(" sendto()ing)");
+ sotranslate_out(so, &addr);
+
+ /* Don't care what port we get */
+ ret = sendto(so->s, m->m_data, m->m_len, 0,
+ (struct sockaddr *)&addr, sockaddr_size(&addr));
+ if (ret < 0)
+ return -1;
+
+ /*
+ * Kill the socket if there's no reply in 4 minutes,
+ * but only if it's an expirable socket
+ */
+ if (so->so_expire)
+ so->so_expire = curtime + SO_EXPIRE;
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
+ return 0;
+}
+
+/*
+ * Listen for incoming TCP connections
+ */
+struct socket *
+tcp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
+ unsigned lport, int flags)
+{
+ /* TODO: IPv6 */
+ struct sockaddr_in addr;
+ struct socket *so;
+ int s, opt = 1;
+ socklen_t addrlen = sizeof(addr);
+ memset(&addr, 0, addrlen);
+
+ DEBUG_CALL("tcp_listen");
+ DEBUG_ARG("haddr = %s", inet_ntoa((struct in_addr){.s_addr = haddr}));
+ DEBUG_ARG("hport = %d", ntohs(hport));
+ DEBUG_ARG("laddr = %s", inet_ntoa((struct in_addr){.s_addr = laddr}));
+ DEBUG_ARG("lport = %d", ntohs(lport));
+ DEBUG_ARG("flags = %x", flags);
+
+ so = socreate(slirp);
+
+ /* Don't tcp_attach... we don't need so_snd nor so_rcv */
+ if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) {
+ g_free(so);
+ return NULL;
+ }
+ insque(so, &slirp->tcb);
+
+ /*
+ * SS_FACCEPTONCE sockets must time out.
+ */
+ if (flags & SS_FACCEPTONCE)
+ so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
+
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= (SS_FACCEPTCONN | flags);
+ so->so_lfamily = AF_INET;
+ so->so_lport = lport; /* Kept in network format */
+ so->so_laddr.s_addr = laddr; /* Ditto */
+
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = haddr;
+ addr.sin_port = hport;
+
+ if (((s = slirp_socket(AF_INET,SOCK_STREAM,0)) < 0) ||
+ (slirp_socket_set_fast_reuse(s) < 0) ||
+ (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) ||
+ (listen(s,1) < 0)) {
+ int tmperrno = errno; /* Don't clobber the real reason we failed */
+
+ if (s >= 0) {
+ closesocket(s);
+ }
+ sofree(so);
+ /* Restore the real errno */
+#ifdef _WIN32
+ WSASetLastError(tmperrno);
+#else
+ errno = tmperrno;
+#endif
+ return NULL;
+ }
+ setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
+ opt = 1;
+ setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(int));
+
+ getsockname(s,(struct sockaddr *)&addr,&addrlen);
+ so->so_ffamily = AF_INET;
+ so->so_fport = addr.sin_port;
+ if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
+ so->so_faddr = slirp->vhost_addr;
+ else
+ so->so_faddr = addr.sin_addr;
+
+ so->s = s;
+ return so;
+}
+
+/*
+ * Various session state calls
+ * XXX Should be #define's
+ * The socket state stuff needs work, these often get call 2 or 3
+ * times each when only 1 was needed
+ */
+void
+soisfconnecting(struct socket *so)
+{
+ so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE|
+ SS_FCANTSENDMORE|SS_FWDRAIN);
+ so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
+}
+
+void
+soisfconnected(struct socket *so)
+{
+ so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF);
+ so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
+}
+
+static void
+sofcantrcvmore(struct socket *so)
+{
+ if ((so->so_state & SS_NOFDREF) == 0) {
+ shutdown(so->s,0);
+ }
+ so->so_state &= ~(SS_ISFCONNECTING);
+ if (so->so_state & SS_FCANTSENDMORE) {
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_NOFDREF; /* Don't select it */
+ } else {
+ so->so_state |= SS_FCANTRCVMORE;
+ }
+}
+
+static void
+sofcantsendmore(struct socket *so)
+{
+ if ((so->so_state & SS_NOFDREF) == 0) {
+ shutdown(so->s,1); /* send FIN to fhost */
+ }
+ so->so_state &= ~(SS_ISFCONNECTING);
+ if (so->so_state & SS_FCANTRCVMORE) {
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_NOFDREF; /* as above */
+ } else {
+ so->so_state |= SS_FCANTSENDMORE;
+ }
+}
+
+/*
+ * Set write drain mode
+ * Set CANTSENDMORE once all data has been write()n
+ */
+void
+sofwdrain(struct socket *so)
+{
+ if (so->so_rcv.sb_cc)
+ so->so_state |= SS_FWDRAIN;
+ else
+ sofcantsendmore(so);
+}
+
+/*
+ * Translate addr in host addr when it is a virtual address
+ */
+void sotranslate_out(struct socket *so, struct sockaddr_storage *addr)
+{
+ Slirp *slirp = so->slirp;
+ struct sockaddr_in *sin = (struct sockaddr_in *)addr;
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
+
+ switch (addr->ss_family) {
+ case AF_INET:
+ if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
+ slirp->vnetwork_addr.s_addr) {
+ /* It's an alias */
+ if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
+ if (get_dns_addr(&sin->sin_addr) < 0) {
+ sin->sin_addr = loopback_addr;
+ }
+ } else {
+ sin->sin_addr = loopback_addr;
+ }
+ }
+
+ DEBUG_MISC(" addr.sin_port=%d, addr.sin_addr.s_addr=%.16s",
+ ntohs(sin->sin_port), inet_ntoa(sin->sin_addr));
+ break;
+
+ case AF_INET6:
+ if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
+ slirp->vprefix_len)) {
+ if (in6_equal(&so->so_faddr6, &slirp->vnameserver_addr6)) {
+ uint32_t scope_id;
+ if (get_dns6_addr(&sin6->sin6_addr, &scope_id) >= 0) {
+ sin6->sin6_scope_id = scope_id;
+ } else {
+ sin6->sin6_addr = in6addr_loopback;
+ }
+ } else {
+ sin6->sin6_addr = in6addr_loopback;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+}
+
+void sotranslate_in(struct socket *so, struct sockaddr_storage *addr)
+{
+ Slirp *slirp = so->slirp;
+ struct sockaddr_in *sin = (struct sockaddr_in *)addr;
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
+
+ switch (addr->ss_family) {
+ case AF_INET:
+ if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
+ slirp->vnetwork_addr.s_addr) {
+ uint32_t inv_mask = ~slirp->vnetwork_mask.s_addr;
+
+ if ((so->so_faddr.s_addr & inv_mask) == inv_mask) {
+ sin->sin_addr = slirp->vhost_addr;
+ } else if (sin->sin_addr.s_addr == loopback_addr.s_addr ||
+ so->so_faddr.s_addr != slirp->vhost_addr.s_addr) {
+ sin->sin_addr = so->so_faddr;
+ }
+ }
+ break;
+
+ case AF_INET6:
+ if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6,
+ slirp->vprefix_len)) {
+ if (in6_equal(&sin6->sin6_addr, &in6addr_loopback)
+ || !in6_equal(&so->so_faddr6, &slirp->vhost_addr6)) {
+ sin6->sin6_addr = so->so_faddr6;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+}
+
+/*
+ * Translate connections from localhost to the real hostname
+ */
+void sotranslate_accept(struct socket *so)
+{
+ Slirp *slirp = so->slirp;
+
+ switch (so->so_ffamily) {
+ case AF_INET:
+ if (so->so_faddr.s_addr == INADDR_ANY ||
+ (so->so_faddr.s_addr & loopback_mask) ==
+ (loopback_addr.s_addr & loopback_mask)) {
+ so->so_faddr = slirp->vhost_addr;
+ }
+ break;
+
+ case AF_INET6:
+ if (in6_equal(&so->so_faddr6, &in6addr_any) ||
+ in6_equal(&so->so_faddr6, &in6addr_loopback)) {
+ so->so_faddr6 = slirp->vhost_addr6;
+ }
+ break;
+
+ default:
+ break;
+ }
+}
+
+void sodrop(struct socket *s, int num)
+{
+ if (sbdrop(&s->so_snd, num)) {
+ s->slirp->cb->notify(s->slirp->opaque);
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#ifndef SLIRP_SOCKET_H
+#define SLIRP_SOCKET_H
+
+#include "misc.h"
+
+#define SO_EXPIRE 240000
+#define SO_EXPIREFAST 10000
+
+/*
+ * Our socket structure
+ */
+
+union slirp_sockaddr {
+ struct sockaddr_storage ss;
+ struct sockaddr_in sin;
+ struct sockaddr_in6 sin6;
+};
+
+struct socket {
+ struct socket *so_next,*so_prev; /* For a linked list of sockets */
+
+ int s; /* The actual socket */
+ struct gfwd_list *guestfwd;
+
+ int pollfds_idx; /* GPollFD GArray index */
+
+ Slirp *slirp; /* managing slirp instance */
+
+ /* XXX union these with not-yet-used sbuf params */
+ struct mbuf *so_m; /* Pointer to the original SYN packet,
+ * for non-blocking connect()'s, and
+ * PING reply's */
+ struct tcpiphdr *so_ti; /* Pointer to the original ti within
+ * so_mconn, for non-blocking connections */
+ uint32_t so_urgc;
+ union slirp_sockaddr fhost; /* Foreign host */
+#define so_faddr fhost.sin.sin_addr
+#define so_fport fhost.sin.sin_port
+#define so_faddr6 fhost.sin6.sin6_addr
+#define so_fport6 fhost.sin6.sin6_port
+#define so_ffamily fhost.ss.ss_family
+
+ union slirp_sockaddr lhost; /* Local host */
+#define so_laddr lhost.sin.sin_addr
+#define so_lport lhost.sin.sin_port
+#define so_laddr6 lhost.sin6.sin6_addr
+#define so_lport6 lhost.sin6.sin6_port
+#define so_lfamily lhost.ss.ss_family
+
+ uint8_t so_iptos; /* Type of service */
+ uint8_t so_emu; /* Is the socket emulated? */
+
+ uint8_t so_type; /* Type of socket, UDP or TCP */
+ int32_t so_state; /* internal state flags SS_*, below */
+
+ struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
+ unsigned so_expire; /* When the socket will expire */
+
+ int so_queued; /* Number of packets queued from this socket */
+ int so_nqueued; /* Number of packets queued in a row
+ * Used to determine when to "downgrade" a session
+ * from fastq to batchq */
+
+ struct sbuf so_rcv; /* Receive buffer */
+ struct sbuf so_snd; /* Send buffer */
+};
+
+
+/*
+ * Socket state bits. (peer means the host on the Internet,
+ * local host means the host on the other end of the modem)
+ */
+#define SS_NOFDREF 0x001 /* No fd reference */
+
+#define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
+#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
+#define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */
+#define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */
+#define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
+
+#define SS_CTL 0x080
+#define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
+#define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
+
+#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
+#define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
+#define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */
+
+static inline int sockaddr_equal(struct sockaddr_storage *a,
+ struct sockaddr_storage *b)
+{
+ if (a->ss_family != b->ss_family) {
+ return 0;
+ }
+
+ switch (a->ss_family) {
+ case AF_INET:
+ {
+ struct sockaddr_in *a4 = (struct sockaddr_in *) a;
+ struct sockaddr_in *b4 = (struct sockaddr_in *) b;
+ return a4->sin_addr.s_addr == b4->sin_addr.s_addr
+ && a4->sin_port == b4->sin_port;
+ }
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) a;
+ struct sockaddr_in6 *b6 = (struct sockaddr_in6 *) b;
+ return (in6_equal(&a6->sin6_addr, &b6->sin6_addr)
+ && a6->sin6_port == b6->sin6_port);
+ }
+ default:
+ g_assert_not_reached();
+ }
+
+ return 0;
+}
+
+static inline socklen_t sockaddr_size(struct sockaddr_storage *a)
+{
+ switch (a->ss_family) {
+ case AF_INET:
+ return sizeof(struct sockaddr_in);
+ case AF_INET6:
+ return sizeof(struct sockaddr_in6);
+ default:
+ g_assert_not_reached();
+ }
+}
+
+struct socket *solookup(struct socket **, struct socket *,
+ struct sockaddr_storage *, struct sockaddr_storage *);
+struct socket *socreate(Slirp *);
+void sofree(struct socket *);
+int soread(struct socket *);
+int sorecvoob(struct socket *);
+int sosendoob(struct socket *);
+int sowrite(struct socket *);
+void sorecvfrom(struct socket *);
+int sosendto(struct socket *, struct mbuf *);
+struct socket * tcp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned,
+ int);
+void soisfconnecting(register struct socket *);
+void soisfconnected(register struct socket *);
+void sofwdrain(struct socket *);
+struct iovec; /* For win32 */
+size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
+int soreadbuf(struct socket *so, const char *buf, int size);
+
+void sotranslate_out(struct socket *, struct sockaddr_storage *);
+void sotranslate_in(struct socket *, struct sockaddr_storage *);
+void sotranslate_accept(struct socket *);
+void sodrop(struct socket *, int num);
+
+
+#endif /* SLIRP_SOCKET_H */
--- /dev/null
+/*
+ * libslirp
+ *
+ * Copyright (c) 2004-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "slirp.h"
+#include "vmstate.h"
+#include "state.h"
+#include "stream.h"
+
+static int slirp_tcp_post_load(void *opaque, int version)
+{
+ tcp_template((struct tcpcb *)opaque);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_slirp_tcp = {
+ .name = "slirp-tcp",
+ .version_id = 0,
+ .post_load = slirp_tcp_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_INT16(t_state, struct tcpcb),
+ VMSTATE_INT16_ARRAY(t_timer, struct tcpcb, TCPT_NTIMERS),
+ VMSTATE_INT16(t_rxtshift, struct tcpcb),
+ VMSTATE_INT16(t_rxtcur, struct tcpcb),
+ VMSTATE_INT16(t_dupacks, struct tcpcb),
+ VMSTATE_UINT16(t_maxseg, struct tcpcb),
+ VMSTATE_UINT8(t_force, struct tcpcb),
+ VMSTATE_UINT16(t_flags, struct tcpcb),
+ VMSTATE_UINT32(snd_una, struct tcpcb),
+ VMSTATE_UINT32(snd_nxt, struct tcpcb),
+ VMSTATE_UINT32(snd_up, struct tcpcb),
+ VMSTATE_UINT32(snd_wl1, struct tcpcb),
+ VMSTATE_UINT32(snd_wl2, struct tcpcb),
+ VMSTATE_UINT32(iss, struct tcpcb),
+ VMSTATE_UINT32(snd_wnd, struct tcpcb),
+ VMSTATE_UINT32(rcv_wnd, struct tcpcb),
+ VMSTATE_UINT32(rcv_nxt, struct tcpcb),
+ VMSTATE_UINT32(rcv_up, struct tcpcb),
+ VMSTATE_UINT32(irs, struct tcpcb),
+ VMSTATE_UINT32(rcv_adv, struct tcpcb),
+ VMSTATE_UINT32(snd_max, struct tcpcb),
+ VMSTATE_UINT32(snd_cwnd, struct tcpcb),
+ VMSTATE_UINT32(snd_ssthresh, struct tcpcb),
+ VMSTATE_INT16(t_idle, struct tcpcb),
+ VMSTATE_INT16(t_rtt, struct tcpcb),
+ VMSTATE_UINT32(t_rtseq, struct tcpcb),
+ VMSTATE_INT16(t_srtt, struct tcpcb),
+ VMSTATE_INT16(t_rttvar, struct tcpcb),
+ VMSTATE_UINT16(t_rttmin, struct tcpcb),
+ VMSTATE_UINT32(max_sndwnd, struct tcpcb),
+ VMSTATE_UINT8(t_oobflags, struct tcpcb),
+ VMSTATE_UINT8(t_iobc, struct tcpcb),
+ VMSTATE_INT16(t_softerror, struct tcpcb),
+ VMSTATE_UINT8(snd_scale, struct tcpcb),
+ VMSTATE_UINT8(rcv_scale, struct tcpcb),
+ VMSTATE_UINT8(request_r_scale, struct tcpcb),
+ VMSTATE_UINT8(requested_s_scale, struct tcpcb),
+ VMSTATE_UINT32(ts_recent, struct tcpcb),
+ VMSTATE_UINT32(ts_recent_age, struct tcpcb),
+ VMSTATE_UINT32(last_ack_sent, struct tcpcb),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+/* The sbuf has a pair of pointers that are migrated as offsets;
+ * we calculate the offsets and restore the pointers using
+ * pre_save/post_load on a tmp structure.
+ */
+struct sbuf_tmp {
+ struct sbuf *parent;
+ uint32_t roff, woff;
+};
+
+static int sbuf_tmp_pre_save(void *opaque)
+{
+ struct sbuf_tmp *tmp = opaque;
+ tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data;
+ tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data;
+
+ return 0;
+}
+
+static int sbuf_tmp_post_load(void *opaque, int version)
+{
+ struct sbuf_tmp *tmp = opaque;
+ uint32_t requested_len = tmp->parent->sb_datalen;
+
+ /* Allocate the buffer space used by the field after the tmp */
+ sbreserve(tmp->parent, tmp->parent->sb_datalen);
+
+ if (tmp->parent->sb_datalen != requested_len) {
+ return -ENOMEM;
+ }
+ if (tmp->woff >= requested_len ||
+ tmp->roff >= requested_len) {
+ g_critical("invalid sbuf offsets r/w=%u/%u len=%u",
+ tmp->roff, tmp->woff, requested_len);
+ return -EINVAL;
+ }
+
+ tmp->parent->sb_wptr = tmp->parent->sb_data + tmp->woff;
+ tmp->parent->sb_rptr = tmp->parent->sb_data + tmp->roff;
+
+ return 0;
+}
+
+
+static const VMStateDescription vmstate_slirp_sbuf_tmp = {
+ .name = "slirp-sbuf-tmp",
+ .post_load = sbuf_tmp_post_load,
+ .pre_save = sbuf_tmp_pre_save,
+ .version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(woff, struct sbuf_tmp),
+ VMSTATE_UINT32(roff, struct sbuf_tmp),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_slirp_sbuf = {
+ .name = "slirp-sbuf",
+ .version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(sb_cc, struct sbuf),
+ VMSTATE_UINT32(sb_datalen, struct sbuf),
+ VMSTATE_WITH_TMP(struct sbuf, struct sbuf_tmp, vmstate_slirp_sbuf_tmp),
+ VMSTATE_VBUFFER_UINT32(sb_data, struct sbuf, 0, NULL, sb_datalen),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static bool slirp_older_than_v4(void *opaque, int version_id)
+{
+ return version_id < 4;
+}
+
+static bool slirp_family_inet(void *opaque, int version_id)
+{
+ union slirp_sockaddr *ssa = (union slirp_sockaddr *)opaque;
+ return ssa->ss.ss_family == AF_INET;
+}
+
+static int slirp_socket_pre_load(void *opaque)
+{
+ struct socket *so = opaque;
+ if (tcp_attach(so) < 0) {
+ return -ENOMEM;
+ }
+ /* Older versions don't load these fields */
+ so->so_ffamily = AF_INET;
+ so->so_lfamily = AF_INET;
+ return 0;
+}
+
+#ifndef _WIN32
+#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_UINT32_TEST(f, s, t)
+#else
+/* Win uses u_long rather than uint32_t - but it's still 32bits long */
+#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_SINGLE_TEST(f, s, t, 0, \
+ slirp_vmstate_info_uint32, u_long)
+#endif
+
+/* The OS provided ss_family field isn't that portable; it's size
+ * and type varies (16/8 bit, signed, unsigned)
+ * and the values it contains aren't fully portable.
+ */
+typedef struct SS_FamilyTmpStruct {
+ union slirp_sockaddr *parent;
+ uint16_t portable_family;
+} SS_FamilyTmpStruct;
+
+#define SS_FAMILY_MIG_IPV4 2 /* Linux, BSD, Win... */
+#define SS_FAMILY_MIG_IPV6 10 /* Linux */
+#define SS_FAMILY_MIG_OTHER 0xffff
+
+static int ss_family_pre_save(void *opaque)
+{
+ SS_FamilyTmpStruct *tss = opaque;
+
+ tss->portable_family = SS_FAMILY_MIG_OTHER;
+
+ if (tss->parent->ss.ss_family == AF_INET) {
+ tss->portable_family = SS_FAMILY_MIG_IPV4;
+ } else if (tss->parent->ss.ss_family == AF_INET6) {
+ tss->portable_family = SS_FAMILY_MIG_IPV6;
+ }
+
+ return 0;
+}
+
+static int ss_family_post_load(void *opaque, int version_id)
+{
+ SS_FamilyTmpStruct *tss = opaque;
+
+ switch (tss->portable_family) {
+ case SS_FAMILY_MIG_IPV4:
+ tss->parent->ss.ss_family = AF_INET;
+ break;
+ case SS_FAMILY_MIG_IPV6:
+ case 23: /* compatibility: AF_INET6 from mingw */
+ case 28: /* compatibility: AF_INET6 from FreeBSD sys/socket.h */
+ tss->parent->ss.ss_family = AF_INET6;
+ break;
+ default:
+ g_critical("invalid ss_family type %x", tss->portable_family);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_slirp_ss_family = {
+ .name = "slirp-socket-addr/ss_family",
+ .pre_save = ss_family_pre_save,
+ .post_load = ss_family_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(portable_family, SS_FamilyTmpStruct),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_slirp_socket_addr = {
+ .name = "slirp-socket-addr",
+ .version_id = 4,
+ .fields = (VMStateField[]) {
+ VMSTATE_WITH_TMP(union slirp_sockaddr, SS_FamilyTmpStruct,
+ vmstate_slirp_ss_family),
+ VMSTATE_SIN4_ADDR(sin.sin_addr.s_addr, union slirp_sockaddr,
+ slirp_family_inet),
+ VMSTATE_UINT16_TEST(sin.sin_port, union slirp_sockaddr,
+ slirp_family_inet),
+
+#if 0
+ /* Untested: Needs checking by someone with IPv6 test */
+ VMSTATE_BUFFER_TEST(sin6.sin6_addr, union slirp_sockaddr,
+ slirp_family_inet6),
+ VMSTATE_UINT16_TEST(sin6.sin6_port, union slirp_sockaddr,
+ slirp_family_inet6),
+ VMSTATE_UINT32_TEST(sin6.sin6_flowinfo, union slirp_sockaddr,
+ slirp_family_inet6),
+ VMSTATE_UINT32_TEST(sin6.sin6_scope_id, union slirp_sockaddr,
+ slirp_family_inet6),
+#endif
+
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_slirp_socket = {
+ .name = "slirp-socket",
+ .version_id = 4,
+ .pre_load = slirp_socket_pre_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(so_urgc, struct socket),
+ /* Pre-v4 versions */
+ VMSTATE_SIN4_ADDR(so_faddr.s_addr, struct socket,
+ slirp_older_than_v4),
+ VMSTATE_SIN4_ADDR(so_laddr.s_addr, struct socket,
+ slirp_older_than_v4),
+ VMSTATE_UINT16_TEST(so_fport, struct socket, slirp_older_than_v4),
+ VMSTATE_UINT16_TEST(so_lport, struct socket, slirp_older_than_v4),
+ /* v4 and newer */
+ VMSTATE_STRUCT(fhost, struct socket, 4, vmstate_slirp_socket_addr,
+ union slirp_sockaddr),
+ VMSTATE_STRUCT(lhost, struct socket, 4, vmstate_slirp_socket_addr,
+ union slirp_sockaddr),
+
+ VMSTATE_UINT8(so_iptos, struct socket),
+ VMSTATE_UINT8(so_emu, struct socket),
+ VMSTATE_UINT8(so_type, struct socket),
+ VMSTATE_INT32(so_state, struct socket),
+ VMSTATE_STRUCT(so_rcv, struct socket, 0, vmstate_slirp_sbuf,
+ struct sbuf),
+ VMSTATE_STRUCT(so_snd, struct socket, 0, vmstate_slirp_sbuf,
+ struct sbuf),
+ VMSTATE_STRUCT_POINTER(so_tcpcb, struct socket, vmstate_slirp_tcp,
+ struct tcpcb),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_slirp_bootp_client = {
+ .name = "slirp_bootpclient",
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(allocated, BOOTPClient),
+ VMSTATE_BUFFER(macaddr, BOOTPClient),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_slirp = {
+ .name = "slirp",
+ .version_id = 4,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16_V(ip_id, Slirp, 2),
+ VMSTATE_STRUCT_ARRAY(bootp_clients, Slirp, NB_BOOTP_CLIENTS, 3,
+ vmstate_slirp_bootp_client, BOOTPClient),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+void slirp_state_save(Slirp *slirp, SlirpWriteCb write_cb, void *opaque)
+{
+ struct gfwd_list *ex_ptr;
+ SlirpOStream f = {
+ .write_cb = write_cb,
+ .opaque = opaque,
+ };
+
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
+ if (ex_ptr->write_cb) {
+ struct socket *so;
+ so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr,
+ ntohs(ex_ptr->ex_fport));
+ if (!so) {
+ continue;
+ }
+
+ slirp_ostream_write_u8(&f, 42);
+ slirp_vmstate_save_state(&f, &vmstate_slirp_socket, so);
+ }
+ slirp_ostream_write_u8(&f, 0);
+
+ slirp_vmstate_save_state(&f, &vmstate_slirp, slirp);
+}
+
+
+int slirp_state_load(Slirp *slirp, int version_id,
+ SlirpReadCb read_cb, void *opaque)
+{
+ struct gfwd_list *ex_ptr;
+ SlirpIStream f = {
+ .read_cb = read_cb,
+ .opaque = opaque,
+ };
+
+ while (slirp_istream_read_u8(&f)) {
+ int ret;
+ struct socket *so = socreate(slirp);
+
+ ret = slirp_vmstate_load_state(&f, &vmstate_slirp_socket, so, version_id);
+ if (ret < 0) {
+ return ret;
+ }
+
+ if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) !=
+ slirp->vnetwork_addr.s_addr) {
+ return -EINVAL;
+ }
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
+ if (ex_ptr->write_cb &&
+ so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr &&
+ so->so_fport == ex_ptr->ex_fport) {
+ break;
+ }
+ }
+ if (!ex_ptr) {
+ return -EINVAL;
+ }
+ }
+
+ return slirp_vmstate_load_state(&f, &vmstate_slirp, slirp, version_id);
+}
+
+int slirp_state_version(void)
+{
+ return 4;
+}
--- /dev/null
+/*
+ * libslirp io streams
+ *
+ * Copyright (c) 2018 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "stream.h"
+#include <glib.h>
+
+bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size)
+{
+ return f->read_cb(buf, size, f->opaque) == size;
+}
+
+bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size)
+{
+ return f->write_cb(buf, size, f->opaque) == size;
+}
+
+uint8_t slirp_istream_read_u8(SlirpIStream *f)
+{
+ uint8_t b;
+
+ if (slirp_istream_read(f, &b, sizeof(b))) {
+ return b;
+ }
+
+ return 0;
+}
+
+bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b)
+{
+ return slirp_ostream_write(f, &b, sizeof(b));
+}
+
+uint16_t slirp_istream_read_u16(SlirpIStream *f)
+{
+ uint16_t b;
+
+ if (slirp_istream_read(f, &b, sizeof(b))) {
+ return GUINT16_FROM_BE(b);
+ }
+
+ return 0;
+}
+
+bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b)
+{
+ b = GUINT16_TO_BE(b);
+ return slirp_ostream_write(f, &b, sizeof(b));
+}
+
+uint32_t slirp_istream_read_u32(SlirpIStream *f)
+{
+ uint32_t b;
+
+ if (slirp_istream_read(f, &b, sizeof(b))) {
+ return GUINT32_FROM_BE(b);
+ }
+
+ return 0;
+}
+
+bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b)
+{
+ b = GUINT32_TO_BE(b);
+ return slirp_ostream_write(f, &b, sizeof(b));
+}
+
+int16_t slirp_istream_read_i16(SlirpIStream *f)
+{
+ int16_t b;
+
+ if (slirp_istream_read(f, &b, sizeof(b))) {
+ return GINT16_FROM_BE(b);
+ }
+
+ return 0;
+}
+
+bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b)
+{
+ b = GINT16_TO_BE(b);
+ return slirp_ostream_write(f, &b, sizeof(b));
+}
+
+int32_t slirp_istream_read_i32(SlirpIStream *f)
+{
+ int32_t b;
+
+ if (slirp_istream_read(f, &b, sizeof(b))) {
+ return GINT32_FROM_BE(b);
+ }
+
+ return 0;
+}
+
+bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b)
+{
+ b = GINT32_TO_BE(b);
+ return slirp_ostream_write(f, &b, sizeof(b));
+}
--- /dev/null
+#ifndef STREAM_H_
+#define STREAM_H_
+
+#include "libslirp.h"
+
+typedef struct SlirpIStream {
+ SlirpReadCb read_cb;
+ void *opaque;
+} SlirpIStream;
+
+typedef struct SlirpOStream {
+ SlirpWriteCb write_cb;
+ void *opaque;
+} SlirpOStream;
+
+bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size);
+bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size);
+
+uint8_t slirp_istream_read_u8(SlirpIStream *f);
+bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b);
+
+uint16_t slirp_istream_read_u16(SlirpIStream *f);
+bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b);
+
+uint32_t slirp_istream_read_u32(SlirpIStream *f);
+bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b);
+
+int16_t slirp_istream_read_i16(SlirpIStream *f);
+bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b);
+
+int32_t slirp_istream_read_i32(SlirpIStream *f);
+bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b);
+
+#endif /* STREAM_H_ */
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp.h 8.1 (Berkeley) 6/10/93
+ * tcp.h,v 1.3 1994/08/21 05:27:34 paul Exp
+ */
+
+#ifndef TCP_H
+#define TCP_H
+
+#include <glib.h>
+
+typedef uint32_t tcp_seq;
+
+#define PR_SLOWHZ 2 /* 2 slow timeouts per second (approx) */
+#define PR_FASTHZ 5 /* 5 fast timeouts per second (not important) */
+
+#define TCP_SNDSPACE 8192
+#define TCP_RCVSPACE 8192
+
+/*
+ * TCP header.
+ * Per RFC 793, September, 1981.
+ */
+#define tcphdr slirp_tcphdr
+struct tcphdr {
+ uint16_t th_sport; /* source port */
+ uint16_t th_dport; /* destination port */
+ tcp_seq th_seq; /* sequence number */
+ tcp_seq th_ack; /* acknowledgement number */
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ uint8_t th_off:4, /* data offset */
+ th_x2:4; /* (unused) */
+#else
+ uint8_t th_x2:4, /* (unused) */
+ th_off:4; /* data offset */
+#endif
+ uint8_t th_flags;
+ uint16_t th_win; /* window */
+ uint16_t th_sum; /* checksum */
+ uint16_t th_urp; /* urgent pointer */
+};
+
+#include "tcp_var.h"
+
+#ifndef TH_FIN
+#define TH_FIN 0x01
+#define TH_SYN 0x02
+#define TH_RST 0x04
+#define TH_PUSH 0x08
+#define TH_ACK 0x10
+#define TH_URG 0x20
+#endif
+
+#ifndef TCPOPT_EOL
+#define TCPOPT_EOL 0
+#define TCPOPT_NOP 1
+#define TCPOPT_MAXSEG 2
+#define TCPOPT_WINDOW 3
+#define TCPOPT_SACK_PERMITTED 4 /* Experimental */
+#define TCPOPT_SACK 5 /* Experimental */
+#define TCPOPT_TIMESTAMP 8
+
+#define TCPOPT_TSTAMP_HDR \
+ (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
+#endif
+
+#ifndef TCPOLEN_MAXSEG
+#define TCPOLEN_MAXSEG 4
+#define TCPOLEN_WINDOW 3
+#define TCPOLEN_SACK_PERMITTED 2
+#define TCPOLEN_TIMESTAMP 10
+#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
+#endif
+
+/*
+ * Default maximum segment size for TCP.
+ * With an IP MSS of 576, this is 536,
+ * but 512 is probably more convenient.
+ * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
+ *
+ * We make this 1460 because we only care about Ethernet in the qemu context.
+ */
+#undef TCP_MSS
+#define TCP_MSS 1460
+#undef TCP6_MSS
+#define TCP6_MSS 1440
+
+#undef TCP_MAXWIN
+#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */
+
+#undef TCP_MAX_WINSHIFT
+#define TCP_MAX_WINSHIFT 14 /* maximum window shift */
+
+/*
+ * User-settable options (used with setsockopt).
+ *
+ * We don't use the system headers on unix because we have conflicting
+ * local structures. We can't avoid the system definitions on Windows,
+ * so we undefine them.
+ */
+#undef TCP_NODELAY
+#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
+#undef TCP_MAXSEG
+
+/*
+ * TCP FSM state definitions.
+ * Per RFC793, September, 1981.
+ */
+
+#define TCP_NSTATES 11
+
+#define TCPS_CLOSED 0 /* closed */
+#define TCPS_LISTEN 1 /* listening for connection */
+#define TCPS_SYN_SENT 2 /* active, have sent syn */
+#define TCPS_SYN_RECEIVED 3 /* have send and received syn */
+/* states < TCPS_ESTABLISHED are those where connections not established */
+#define TCPS_ESTABLISHED 4 /* established */
+#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
+/* states > TCPS_CLOSE_WAIT are those where user has closed */
+#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
+#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
+#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
+/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
+#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
+#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
+
+#define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
+#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
+#define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
+
+/*
+ * TCP sequence numbers are 32 bit integers operated
+ * on with modular arithmetic. These macros can be
+ * used to compare such integers.
+ */
+#define SEQ_LT(a,b) ((int)((a)-(b)) < 0)
+#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
+#define SEQ_GT(a,b) ((int)((a)-(b)) > 0)
+#define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0)
+
+/*
+ * Macros to initialize tcp sequence numbers for
+ * send and receive from initial send and receive
+ * sequence numbers.
+ */
+#define tcp_rcvseqinit(tp) \
+ (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1
+
+#define tcp_sendseqinit(tp) \
+ (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = (tp)->iss
+
+#define TCP_ISSINCR (125*1024) /* increment for tcp_iss each second */
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_input.c 8.5 (Berkeley) 4/10/94
+ * tcp_input.c,v 1.10 1994/10/13 18:36:32 wollman Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+#include "ip_icmp.h"
+
+#define TCPREXMTTHRESH 3
+
+#define TCP_PAWS_IDLE (24 * 24 * 60 * 60 * PR_SLOWHZ)
+
+/* for modulo comparisons of timestamps */
+#define TSTMP_LT(a,b) ((int)((a)-(b)) < 0)
+#define TSTMP_GEQ(a,b) ((int)((a)-(b)) >= 0)
+
+/*
+ * Insert segment ti into reassembly queue of tcp with
+ * control block tp. Return TH_FIN if reassembly now includes
+ * a segment with FIN. The macro form does the common case inline
+ * (segment is the next to be received on an established connection,
+ * and the queue is empty), avoiding linkage into and removal
+ * from the queue and repetition of various conversions.
+ * Set DELACK for segments received in order, but ack immediately
+ * when segments are out of order (so fast retransmit can work).
+ */
+#define TCP_REASS(tp, ti, m, so, flags) { \
+ if ((ti)->ti_seq == (tp)->rcv_nxt && \
+ tcpfrag_list_empty(tp) && \
+ (tp)->t_state == TCPS_ESTABLISHED) { \
+ tp->t_flags |= TF_DELACK; \
+ (tp)->rcv_nxt += (ti)->ti_len; \
+ flags = (ti)->ti_flags & TH_FIN; \
+ if (so->so_emu) { \
+ if (tcp_emu((so),(m))) sbappend(so, (m)); \
+ } else \
+ sbappend((so), (m)); \
+ } else { \
+ (flags) = tcp_reass((tp), (ti), (m)); \
+ tp->t_flags |= TF_ACKNOW; \
+ } \
+}
+
+static void tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt,
+ struct tcpiphdr *ti);
+static void tcp_xmit_timer(register struct tcpcb *tp, int rtt);
+
+static int
+tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti,
+ struct mbuf *m)
+{
+ register struct tcpiphdr *q;
+ struct socket *so = tp->t_socket;
+ int flags;
+
+ /*
+ * Call with ti==NULL after become established to
+ * force pre-ESTABLISHED data up to user socket.
+ */
+ if (ti == NULL)
+ goto present;
+
+ /*
+ * Find a segment which begins after this one does.
+ */
+ for (q = tcpfrag_list_first(tp); !tcpfrag_list_end(q, tp);
+ q = tcpiphdr_next(q))
+ if (SEQ_GT(q->ti_seq, ti->ti_seq))
+ break;
+
+ /*
+ * If there is a preceding segment, it may provide some of
+ * our data already. If so, drop the data from the incoming
+ * segment. If it provides all of our data, drop us.
+ */
+ if (!tcpfrag_list_end(tcpiphdr_prev(q), tp)) {
+ register int i;
+ q = tcpiphdr_prev(q);
+ /* conversion to int (in i) handles seq wraparound */
+ i = q->ti_seq + q->ti_len - ti->ti_seq;
+ if (i > 0) {
+ if (i >= ti->ti_len) {
+ m_free(m);
+ /*
+ * Try to present any queued data
+ * at the left window edge to the user.
+ * This is needed after the 3-WHS
+ * completes.
+ */
+ goto present; /* ??? */
+ }
+ m_adj(m, i);
+ ti->ti_len -= i;
+ ti->ti_seq += i;
+ }
+ q = tcpiphdr_next(q);
+ }
+ ti->ti_mbuf = m;
+
+ /*
+ * While we overlap succeeding segments trim them or,
+ * if they are completely covered, dequeue them.
+ */
+ while (!tcpfrag_list_end(q, tp)) {
+ register int i = (ti->ti_seq + ti->ti_len) - q->ti_seq;
+ if (i <= 0)
+ break;
+ if (i < q->ti_len) {
+ q->ti_seq += i;
+ q->ti_len -= i;
+ m_adj(q->ti_mbuf, i);
+ break;
+ }
+ q = tcpiphdr_next(q);
+ m = tcpiphdr_prev(q)->ti_mbuf;
+ remque(tcpiphdr2qlink(tcpiphdr_prev(q)));
+ m_free(m);
+ }
+
+ /*
+ * Stick new segment in its place.
+ */
+ insque(tcpiphdr2qlink(ti), tcpiphdr2qlink(tcpiphdr_prev(q)));
+
+present:
+ /*
+ * Present data to user, advancing rcv_nxt through
+ * completed sequence space.
+ */
+ if (!TCPS_HAVEESTABLISHED(tp->t_state))
+ return (0);
+ ti = tcpfrag_list_first(tp);
+ if (tcpfrag_list_end(ti, tp) || ti->ti_seq != tp->rcv_nxt)
+ return (0);
+ if (tp->t_state == TCPS_SYN_RECEIVED && ti->ti_len)
+ return (0);
+ do {
+ tp->rcv_nxt += ti->ti_len;
+ flags = ti->ti_flags & TH_FIN;
+ remque(tcpiphdr2qlink(ti));
+ m = ti->ti_mbuf;
+ ti = tcpiphdr_next(ti);
+ if (so->so_state & SS_FCANTSENDMORE)
+ m_free(m);
+ else {
+ if (so->so_emu) {
+ if (tcp_emu(so,m)) sbappend(so, m);
+ } else
+ sbappend(so, m);
+ }
+ } while (ti != (struct tcpiphdr *)tp && ti->ti_seq == tp->rcv_nxt);
+ return (flags);
+}
+
+/*
+ * TCP input routine, follows pages 65-76 of the
+ * protocol specification dated September, 1981 very closely.
+ */
+void
+tcp_input(struct mbuf *m, int iphlen, struct socket *inso, unsigned short af)
+{
+ struct ip save_ip, *ip;
+ struct ip6 save_ip6, *ip6;
+ register struct tcpiphdr *ti;
+ char *optp = NULL;
+ int optlen = 0;
+ int len, tlen, off;
+ register struct tcpcb *tp = NULL;
+ register int tiflags;
+ struct socket *so = NULL;
+ int todrop, acked, ourfinisacked, needoutput = 0;
+ int iss = 0;
+ uint32_t tiwin;
+ int ret;
+ struct sockaddr_storage lhost, fhost;
+ struct sockaddr_in *lhost4, *fhost4;
+ struct sockaddr_in6 *lhost6, *fhost6;
+ struct gfwd_list *ex_ptr;
+ Slirp *slirp;
+
+ DEBUG_CALL("tcp_input");
+ DEBUG_ARG("m = %p iphlen = %2d inso = %p",
+ m, iphlen, inso);
+
+ /*
+ * If called with m == 0, then we're continuing the connect
+ */
+ if (m == NULL) {
+ so = inso;
+ slirp = so->slirp;
+
+ /* Re-set a few variables */
+ tp = sototcpcb(so);
+ m = so->so_m;
+ so->so_m = NULL;
+ ti = so->so_ti;
+ tiwin = ti->ti_win;
+ tiflags = ti->ti_flags;
+
+ goto cont_conn;
+ }
+ slirp = m->slirp;
+
+ ip = mtod(m, struct ip *);
+ ip6 = mtod(m, struct ip6 *);
+
+ switch (af) {
+ case AF_INET:
+ if (iphlen > sizeof(struct ip)) {
+ ip_stripoptions(m, (struct mbuf *)0);
+ iphlen = sizeof(struct ip);
+ }
+ /* XXX Check if too short */
+
+
+ /*
+ * Save a copy of the IP header in case we want restore it
+ * for sending an ICMP error message in response.
+ */
+ save_ip = *ip;
+ save_ip.ip_len += iphlen;
+
+ /*
+ * Get IP and TCP header together in first mbuf.
+ * Note: IP leaves IP header in first mbuf.
+ */
+ m->m_data -= sizeof(struct tcpiphdr) - sizeof(struct ip)
+ - sizeof(struct tcphdr);
+ m->m_len += sizeof(struct tcpiphdr) - sizeof(struct ip)
+ - sizeof(struct tcphdr);
+ ti = mtod(m, struct tcpiphdr *);
+
+ /*
+ * Checksum extended TCP header and data.
+ */
+ tlen = ip->ip_len;
+ tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL;
+ memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr));
+ memset(&ti->ti, 0, sizeof(ti->ti));
+ ti->ti_x0 = 0;
+ ti->ti_src = save_ip.ip_src;
+ ti->ti_dst = save_ip.ip_dst;
+ ti->ti_pr = save_ip.ip_p;
+ ti->ti_len = htons((uint16_t)tlen);
+ break;
+
+ case AF_INET6:
+ /*
+ * Save a copy of the IP header in case we want restore it
+ * for sending an ICMP error message in response.
+ */
+ save_ip6 = *ip6;
+ /*
+ * Get IP and TCP header together in first mbuf.
+ * Note: IP leaves IP header in first mbuf.
+ */
+ m->m_data -= sizeof(struct tcpiphdr) - (sizeof(struct ip6)
+ + sizeof(struct tcphdr));
+ m->m_len += sizeof(struct tcpiphdr) - (sizeof(struct ip6)
+ + sizeof(struct tcphdr));
+ ti = mtod(m, struct tcpiphdr *);
+
+ tlen = ip6->ip_pl;
+ tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL;
+ memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr));
+ memset(&ti->ti, 0, sizeof(ti->ti));
+ ti->ti_x0 = 0;
+ ti->ti_src6 = save_ip6.ip_src;
+ ti->ti_dst6 = save_ip6.ip_dst;
+ ti->ti_nh6 = save_ip6.ip_nh;
+ ti->ti_len = htons((uint16_t)tlen);
+ break;
+
+ default:
+ g_assert_not_reached();
+ }
+
+ len = ((sizeof(struct tcpiphdr) - sizeof(struct tcphdr)) + tlen);
+ if (cksum(m, len)) {
+ goto drop;
+ }
+
+ /*
+ * Check that TCP offset makes sense,
+ * pull out TCP options and adjust length. XXX
+ */
+ off = ti->ti_off << 2;
+ if (off < sizeof (struct tcphdr) || off > tlen) {
+ goto drop;
+ }
+ tlen -= off;
+ ti->ti_len = tlen;
+ if (off > sizeof (struct tcphdr)) {
+ optlen = off - sizeof (struct tcphdr);
+ optp = mtod(m, char *) + sizeof (struct tcpiphdr);
+ }
+ tiflags = ti->ti_flags;
+
+ /*
+ * Convert TCP protocol specific fields to host format.
+ */
+ NTOHL(ti->ti_seq);
+ NTOHL(ti->ti_ack);
+ NTOHS(ti->ti_win);
+ NTOHS(ti->ti_urp);
+
+ /*
+ * Drop TCP, IP headers and TCP options.
+ */
+ m->m_data += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
+ m->m_len -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
+
+ /*
+ * Locate pcb for segment.
+ */
+findso:
+ lhost.ss_family = af;
+ fhost.ss_family = af;
+ switch (af) {
+ case AF_INET:
+ lhost4 = (struct sockaddr_in *) &lhost;
+ lhost4->sin_addr = ti->ti_src;
+ lhost4->sin_port = ti->ti_sport;
+ fhost4 = (struct sockaddr_in *) &fhost;
+ fhost4->sin_addr = ti->ti_dst;
+ fhost4->sin_port = ti->ti_dport;
+ break;
+ case AF_INET6:
+ lhost6 = (struct sockaddr_in6 *) &lhost;
+ lhost6->sin6_addr = ti->ti_src6;
+ lhost6->sin6_port = ti->ti_sport;
+ fhost6 = (struct sockaddr_in6 *) &fhost;
+ fhost6->sin6_addr = ti->ti_dst6;
+ fhost6->sin6_port = ti->ti_dport;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ so = solookup(&slirp->tcp_last_so, &slirp->tcb, &lhost, &fhost);
+
+ /*
+ * If the state is CLOSED (i.e., TCB does not exist) then
+ * all data in the incoming segment is discarded.
+ * If the TCB exists but is in CLOSED state, it is embryonic,
+ * but should either do a listen or a connect soon.
+ *
+ * state == CLOSED means we've done socreate() but haven't
+ * attached it to a protocol yet...
+ *
+ * XXX If a TCB does not exist, and the TH_SYN flag is
+ * the only flag set, then create a session, mark it
+ * as if it was LISTENING, and continue...
+ */
+ if (so == NULL) {
+ /* TODO: IPv6 */
+ if (slirp->restricted) {
+ /* Any hostfwds will have an existing socket, so we only get here
+ * for non-hostfwd connections. These should be dropped, unless it
+ * happens to be a guestfwd.
+ */
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
+ if (ex_ptr->ex_fport == ti->ti_dport &&
+ ti->ti_dst.s_addr == ex_ptr->ex_addr.s_addr) {
+ break;
+ }
+ }
+ if (!ex_ptr) {
+ goto dropwithreset;
+ }
+ }
+
+ if ((tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) != TH_SYN)
+ goto dropwithreset;
+
+ so = socreate(slirp);
+ if (tcp_attach(so) < 0) {
+ g_free(so); /* Not sofree (if it failed, it's not insqued) */
+ goto dropwithreset;
+ }
+
+ sbreserve(&so->so_snd, TCP_SNDSPACE);
+ sbreserve(&so->so_rcv, TCP_RCVSPACE);
+
+ so->lhost.ss = lhost;
+ so->fhost.ss = fhost;
+
+ so->so_iptos = tcp_tos(so);
+ if (so->so_iptos == 0) {
+ switch (af) {
+ case AF_INET:
+ so->so_iptos = ((struct ip *)ti)->ip_tos;
+ break;
+ case AF_INET6:
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ tp = sototcpcb(so);
+ tp->t_state = TCPS_LISTEN;
+ }
+
+ /*
+ * If this is a still-connecting socket, this probably
+ * a retransmit of the SYN. Whether it's a retransmit SYN
+ * or something else, we nuke it.
+ */
+ if (so->so_state & SS_ISFCONNECTING)
+ goto drop;
+
+ tp = sototcpcb(so);
+
+ /* XXX Should never fail */
+ if (tp == NULL)
+ goto dropwithreset;
+ if (tp->t_state == TCPS_CLOSED)
+ goto drop;
+
+ tiwin = ti->ti_win;
+
+ /*
+ * Segment received on connection.
+ * Reset idle time and keep-alive timer.
+ */
+ tp->t_idle = 0;
+ if (slirp_do_keepalive)
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL;
+ else
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE;
+
+ /*
+ * Process options if not in LISTEN state,
+ * else do it below (after getting remote address).
+ */
+ if (optp && tp->t_state != TCPS_LISTEN)
+ tcp_dooptions(tp, (uint8_t *)optp, optlen, ti);
+
+ /*
+ * Header prediction: check for the two common cases
+ * of a uni-directional data xfer. If the packet has
+ * no control flags, is in-sequence, the window didn't
+ * change and we're not retransmitting, it's a
+ * candidate. If the length is zero and the ack moved
+ * forward, we're the sender side of the xfer. Just
+ * free the data acked & wake any higher level process
+ * that was blocked waiting for space. If the length
+ * is non-zero and the ack didn't move, we're the
+ * receiver side. If we're getting packets in-order
+ * (the reassembly queue is empty), add the data to
+ * the socket buffer and note that we need a delayed ack.
+ *
+ * XXX Some of these tests are not needed
+ * eg: the tiwin == tp->snd_wnd prevents many more
+ * predictions.. with no *real* advantage..
+ */
+ if (tp->t_state == TCPS_ESTABLISHED &&
+ (tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) == TH_ACK &&
+ ti->ti_seq == tp->rcv_nxt &&
+ tiwin && tiwin == tp->snd_wnd &&
+ tp->snd_nxt == tp->snd_max) {
+ if (ti->ti_len == 0) {
+ if (SEQ_GT(ti->ti_ack, tp->snd_una) &&
+ SEQ_LEQ(ti->ti_ack, tp->snd_max) &&
+ tp->snd_cwnd >= tp->snd_wnd) {
+ /*
+ * this is a pure ack for outstanding data.
+ */
+ if (tp->t_rtt &&
+ SEQ_GT(ti->ti_ack, tp->t_rtseq))
+ tcp_xmit_timer(tp, tp->t_rtt);
+ acked = ti->ti_ack - tp->snd_una;
+ sodrop(so, acked);
+ tp->snd_una = ti->ti_ack;
+ m_free(m);
+
+ /*
+ * If all outstanding data are acked, stop
+ * retransmit timer, otherwise restart timer
+ * using current (possibly backed-off) value.
+ * If process is waiting for space,
+ * wakeup/selwakeup/signal. If data
+ * are ready to send, let tcp_output
+ * decide between more output or persist.
+ */
+ if (tp->snd_una == tp->snd_max)
+ tp->t_timer[TCPT_REXMT] = 0;
+ else if (tp->t_timer[TCPT_PERSIST] == 0)
+ tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
+
+ /*
+ * This is called because sowwakeup might have
+ * put data into so_snd. Since we don't so sowwakeup,
+ * we don't need this.. XXX???
+ */
+ if (so->so_snd.sb_cc)
+ (void) tcp_output(tp);
+
+ return;
+ }
+ } else if (ti->ti_ack == tp->snd_una &&
+ tcpfrag_list_empty(tp) &&
+ ti->ti_len <= sbspace(&so->so_rcv)) {
+ /*
+ * this is a pure, in-sequence data packet
+ * with nothing on the reassembly queue and
+ * we have enough buffer space to take it.
+ */
+ tp->rcv_nxt += ti->ti_len;
+ /*
+ * Add data to socket buffer.
+ */
+ if (so->so_emu) {
+ if (tcp_emu(so,m)) sbappend(so, m);
+ } else
+ sbappend(so, m);
+
+ /*
+ * If this is a short packet, then ACK now - with Nagel
+ * congestion avoidance sender won't send more until
+ * he gets an ACK.
+ *
+ * It is better to not delay acks at all to maximize
+ * TCP throughput. See RFC 2581.
+ */
+ tp->t_flags |= TF_ACKNOW;
+ tcp_output(tp);
+ return;
+ }
+ } /* header prediction */
+ /*
+ * Calculate amount of space in receive window,
+ * and then do TCP input processing.
+ * Receive window is amount of space in rcv queue,
+ * but not less than advertised window.
+ */
+ { int win;
+ win = sbspace(&so->so_rcv);
+ if (win < 0)
+ win = 0;
+ tp->rcv_wnd = MAX(win, (int)(tp->rcv_adv - tp->rcv_nxt));
+ }
+
+ switch (tp->t_state) {
+
+ /*
+ * If the state is LISTEN then ignore segment if it contains an RST.
+ * If the segment contains an ACK then it is bad and send a RST.
+ * If it does not contain a SYN then it is not interesting; drop it.
+ * Don't bother responding if the destination was a broadcast.
+ * Otherwise initialize tp->rcv_nxt, and tp->irs, select an initial
+ * tp->iss, and send a segment:
+ * <SEQ=ISS><ACK=RCV_NXT><CTL=SYN,ACK>
+ * Also initialize tp->snd_nxt to tp->iss+1 and tp->snd_una to tp->iss.
+ * Fill in remote peer address fields if not previously specified.
+ * Enter SYN_RECEIVED state, and process any other fields of this
+ * segment in this state.
+ */
+ case TCPS_LISTEN: {
+
+ if (tiflags & TH_RST)
+ goto drop;
+ if (tiflags & TH_ACK)
+ goto dropwithreset;
+ if ((tiflags & TH_SYN) == 0)
+ goto drop;
+
+ /*
+ * This has way too many gotos...
+ * But a bit of spaghetti code never hurt anybody :)
+ */
+
+ /*
+ * If this is destined for the control address, then flag to
+ * tcp_ctl once connected, otherwise connect
+ */
+ /* TODO: IPv6 */
+ if (af == AF_INET &&
+ (so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
+ slirp->vnetwork_addr.s_addr) {
+ if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr &&
+ so->so_faddr.s_addr != slirp->vnameserver_addr.s_addr) {
+ /* May be an add exec */
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr;
+ ex_ptr = ex_ptr->ex_next) {
+ if(ex_ptr->ex_fport == so->so_fport &&
+ so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) {
+ so->so_state |= SS_CTL;
+ break;
+ }
+ }
+ if (so->so_state & SS_CTL) {
+ goto cont_input;
+ }
+ }
+ /* CTL_ALIAS: Do nothing, tcp_fconnect will be called on it */
+ }
+
+ if (so->so_emu & EMU_NOCONNECT) {
+ so->so_emu &= ~EMU_NOCONNECT;
+ goto cont_input;
+ }
+
+ if ((tcp_fconnect(so, so->so_ffamily) == -1) &&
+ (errno != EAGAIN) &&
+ (errno != EINPROGRESS) && (errno != EWOULDBLOCK)
+ ) {
+ uint8_t code;
+ DEBUG_MISC(" tcp fconnect errno = %d-%s", errno, strerror(errno));
+ if(errno == ECONNREFUSED) {
+ /* ACK the SYN, send RST to refuse the connection */
+ tcp_respond(tp, ti, m, ti->ti_seq + 1, (tcp_seq) 0,
+ TH_RST | TH_ACK, af);
+ } else {
+ switch (af) {
+ case AF_INET:
+ code = ICMP_UNREACH_NET;
+ if (errno == EHOSTUNREACH) {
+ code = ICMP_UNREACH_HOST;
+ }
+ break;
+ case AF_INET6:
+ code = ICMP6_UNREACH_NO_ROUTE;
+ if (errno == EHOSTUNREACH) {
+ code = ICMP6_UNREACH_ADDRESS;
+ }
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ HTONL(ti->ti_seq); /* restore tcp header */
+ HTONL(ti->ti_ack);
+ HTONS(ti->ti_win);
+ HTONS(ti->ti_urp);
+ m->m_data -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
+ m->m_len += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
+ switch (af) {
+ case AF_INET:
+ m->m_data += sizeof(struct tcpiphdr) - sizeof(struct ip)
+ - sizeof(struct tcphdr);
+ m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct ip)
+ - sizeof(struct tcphdr);
+ *ip = save_ip;
+ icmp_send_error(m, ICMP_UNREACH, code, 0, strerror(errno));
+ break;
+ case AF_INET6:
+ m->m_data += sizeof(struct tcpiphdr) - (sizeof(struct ip6)
+ + sizeof(struct tcphdr));
+ m->m_len -= sizeof(struct tcpiphdr) - (sizeof(struct ip6)
+ + sizeof(struct tcphdr));
+ *ip6 = save_ip6;
+ icmp6_send_error(m, ICMP6_UNREACH, code);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+ tcp_close(tp);
+ m_free(m);
+ } else {
+ /*
+ * Haven't connected yet, save the current mbuf
+ * and ti, and return
+ * XXX Some OS's don't tell us whether the connect()
+ * succeeded or not. So we must time it out.
+ */
+ so->so_m = m;
+ so->so_ti = ti;
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
+ tp->t_state = TCPS_SYN_RECEIVED;
+ /*
+ * Initialize receive sequence numbers now so that we can send a
+ * valid RST if the remote end rejects our connection.
+ */
+ tp->irs = ti->ti_seq;
+ tcp_rcvseqinit(tp);
+ tcp_template(tp);
+ }
+ return;
+
+ cont_conn:
+ /* m==NULL
+ * Check if the connect succeeded
+ */
+ if (so->so_state & SS_NOFDREF) {
+ tp = tcp_close(tp);
+ goto dropwithreset;
+ }
+ cont_input:
+ tcp_template(tp);
+
+ if (optp)
+ tcp_dooptions(tp, (uint8_t *)optp, optlen, ti);
+
+ if (iss)
+ tp->iss = iss;
+ else
+ tp->iss = slirp->tcp_iss;
+ slirp->tcp_iss += TCP_ISSINCR/2;
+ tp->irs = ti->ti_seq;
+ tcp_sendseqinit(tp);
+ tcp_rcvseqinit(tp);
+ tp->t_flags |= TF_ACKNOW;
+ tp->t_state = TCPS_SYN_RECEIVED;
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
+ goto trimthenstep6;
+ } /* case TCPS_LISTEN */
+
+ /*
+ * If the state is SYN_SENT:
+ * if seg contains an ACK, but not for our SYN, drop the input.
+ * if seg contains a RST, then drop the connection.
+ * if seg does not contain SYN, then drop it.
+ * Otherwise this is an acceptable SYN segment
+ * initialize tp->rcv_nxt and tp->irs
+ * if seg contains ack then advance tp->snd_una
+ * if SYN has been acked change to ESTABLISHED else SYN_RCVD state
+ * arrange for segment to be acked (eventually)
+ * continue processing rest of data/controls, beginning with URG
+ */
+ case TCPS_SYN_SENT:
+ if ((tiflags & TH_ACK) &&
+ (SEQ_LEQ(ti->ti_ack, tp->iss) ||
+ SEQ_GT(ti->ti_ack, tp->snd_max)))
+ goto dropwithreset;
+
+ if (tiflags & TH_RST) {
+ if (tiflags & TH_ACK) {
+ tcp_drop(tp, 0); /* XXX Check t_softerror! */
+ }
+ goto drop;
+ }
+
+ if ((tiflags & TH_SYN) == 0)
+ goto drop;
+ if (tiflags & TH_ACK) {
+ tp->snd_una = ti->ti_ack;
+ if (SEQ_LT(tp->snd_nxt, tp->snd_una))
+ tp->snd_nxt = tp->snd_una;
+ }
+
+ tp->t_timer[TCPT_REXMT] = 0;
+ tp->irs = ti->ti_seq;
+ tcp_rcvseqinit(tp);
+ tp->t_flags |= TF_ACKNOW;
+ if (tiflags & TH_ACK && SEQ_GT(tp->snd_una, tp->iss)) {
+ soisfconnected(so);
+ tp->t_state = TCPS_ESTABLISHED;
+
+ (void) tcp_reass(tp, (struct tcpiphdr *)0,
+ (struct mbuf *)0);
+ /*
+ * if we didn't have to retransmit the SYN,
+ * use its rtt as our initial srtt & rtt var.
+ */
+ if (tp->t_rtt)
+ tcp_xmit_timer(tp, tp->t_rtt);
+ } else
+ tp->t_state = TCPS_SYN_RECEIVED;
+
+trimthenstep6:
+ /*
+ * Advance ti->ti_seq to correspond to first data byte.
+ * If data, trim to stay within window,
+ * dropping FIN if necessary.
+ */
+ ti->ti_seq++;
+ if (ti->ti_len > tp->rcv_wnd) {
+ todrop = ti->ti_len - tp->rcv_wnd;
+ m_adj(m, -todrop);
+ ti->ti_len = tp->rcv_wnd;
+ tiflags &= ~TH_FIN;
+ }
+ tp->snd_wl1 = ti->ti_seq - 1;
+ tp->rcv_up = ti->ti_seq;
+ goto step6;
+ } /* switch tp->t_state */
+ /*
+ * States other than LISTEN or SYN_SENT.
+ * Check that at least some bytes of segment are within
+ * receive window. If segment begins before rcv_nxt,
+ * drop leading data (and SYN); if nothing left, just ack.
+ */
+ todrop = tp->rcv_nxt - ti->ti_seq;
+ if (todrop > 0) {
+ if (tiflags & TH_SYN) {
+ tiflags &= ~TH_SYN;
+ ti->ti_seq++;
+ if (ti->ti_urp > 1)
+ ti->ti_urp--;
+ else
+ tiflags &= ~TH_URG;
+ todrop--;
+ }
+ /*
+ * Following if statement from Stevens, vol. 2, p. 960.
+ */
+ if (todrop > ti->ti_len
+ || (todrop == ti->ti_len && (tiflags & TH_FIN) == 0)) {
+ /*
+ * Any valid FIN must be to the left of the window.
+ * At this point the FIN must be a duplicate or out
+ * of sequence; drop it.
+ */
+ tiflags &= ~TH_FIN;
+
+ /*
+ * Send an ACK to resynchronize and drop any data.
+ * But keep on processing for RST or ACK.
+ */
+ tp->t_flags |= TF_ACKNOW;
+ todrop = ti->ti_len;
+ }
+ m_adj(m, todrop);
+ ti->ti_seq += todrop;
+ ti->ti_len -= todrop;
+ if (ti->ti_urp > todrop)
+ ti->ti_urp -= todrop;
+ else {
+ tiflags &= ~TH_URG;
+ ti->ti_urp = 0;
+ }
+ }
+ /*
+ * If new data are received on a connection after the
+ * user processes are gone, then RST the other end.
+ */
+ if ((so->so_state & SS_NOFDREF) &&
+ tp->t_state > TCPS_CLOSE_WAIT && ti->ti_len) {
+ tp = tcp_close(tp);
+ goto dropwithreset;
+ }
+
+ /*
+ * If segment ends after window, drop trailing data
+ * (and PUSH and FIN); if nothing left, just ACK.
+ */
+ todrop = (ti->ti_seq+ti->ti_len) - (tp->rcv_nxt+tp->rcv_wnd);
+ if (todrop > 0) {
+ if (todrop >= ti->ti_len) {
+ /*
+ * If a new connection request is received
+ * while in TIME_WAIT, drop the old connection
+ * and start over if the sequence numbers
+ * are above the previous ones.
+ */
+ if (tiflags & TH_SYN &&
+ tp->t_state == TCPS_TIME_WAIT &&
+ SEQ_GT(ti->ti_seq, tp->rcv_nxt)) {
+ iss = tp->rcv_nxt + TCP_ISSINCR;
+ tp = tcp_close(tp);
+ goto findso;
+ }
+ /*
+ * If window is closed can only take segments at
+ * window edge, and have to drop data and PUSH from
+ * incoming segments. Continue processing, but
+ * remember to ack. Otherwise, drop segment
+ * and ack.
+ */
+ if (tp->rcv_wnd == 0 && ti->ti_seq == tp->rcv_nxt) {
+ tp->t_flags |= TF_ACKNOW;
+ } else {
+ goto dropafterack;
+ }
+ }
+ m_adj(m, -todrop);
+ ti->ti_len -= todrop;
+ tiflags &= ~(TH_PUSH|TH_FIN);
+ }
+
+ /*
+ * If the RST bit is set examine the state:
+ * SYN_RECEIVED STATE:
+ * If passive open, return to LISTEN state.
+ * If active open, inform user that connection was refused.
+ * ESTABLISHED, FIN_WAIT_1, FIN_WAIT2, CLOSE_WAIT STATES:
+ * Inform user that connection was reset, and close tcb.
+ * CLOSING, LAST_ACK, TIME_WAIT STATES
+ * Close the tcb.
+ */
+ if (tiflags&TH_RST) switch (tp->t_state) {
+
+ case TCPS_SYN_RECEIVED:
+ case TCPS_ESTABLISHED:
+ case TCPS_FIN_WAIT_1:
+ case TCPS_FIN_WAIT_2:
+ case TCPS_CLOSE_WAIT:
+ tp->t_state = TCPS_CLOSED;
+ tcp_close(tp);
+ goto drop;
+
+ case TCPS_CLOSING:
+ case TCPS_LAST_ACK:
+ case TCPS_TIME_WAIT:
+ tcp_close(tp);
+ goto drop;
+ }
+
+ /*
+ * If a SYN is in the window, then this is an
+ * error and we send an RST and drop the connection.
+ */
+ if (tiflags & TH_SYN) {
+ tp = tcp_drop(tp,0);
+ goto dropwithreset;
+ }
+
+ /*
+ * If the ACK bit is off we drop the segment and return.
+ */
+ if ((tiflags & TH_ACK) == 0) goto drop;
+
+ /*
+ * Ack processing.
+ */
+ switch (tp->t_state) {
+ /*
+ * In SYN_RECEIVED state if the ack ACKs our SYN then enter
+ * ESTABLISHED state and continue processing, otherwise
+ * send an RST. una<=ack<=max
+ */
+ case TCPS_SYN_RECEIVED:
+
+ if (SEQ_GT(tp->snd_una, ti->ti_ack) ||
+ SEQ_GT(ti->ti_ack, tp->snd_max))
+ goto dropwithreset;
+ tp->t_state = TCPS_ESTABLISHED;
+ /*
+ * The sent SYN is ack'ed with our sequence number +1
+ * The first data byte already in the buffer will get
+ * lost if no correction is made. This is only needed for
+ * SS_CTL since the buffer is empty otherwise.
+ * tp->snd_una++; or:
+ */
+ tp->snd_una=ti->ti_ack;
+ if (so->so_state & SS_CTL) {
+ /* So tcp_ctl reports the right state */
+ ret = tcp_ctl(so);
+ if (ret == 1) {
+ soisfconnected(so);
+ so->so_state &= ~SS_CTL; /* success XXX */
+ } else if (ret == 2) {
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_NOFDREF; /* CTL_CMD */
+ } else {
+ needoutput = 1;
+ tp->t_state = TCPS_FIN_WAIT_1;
+ }
+ } else {
+ soisfconnected(so);
+ }
+
+ (void) tcp_reass(tp, (struct tcpiphdr *)0, (struct mbuf *)0);
+ tp->snd_wl1 = ti->ti_seq - 1;
+ /* Avoid ack processing; snd_una==ti_ack => dup ack */
+ goto synrx_to_est;
+ /* fall into ... */
+
+ /*
+ * In ESTABLISHED state: drop duplicate ACKs; ACK out of range
+ * ACKs. If the ack is in the range
+ * tp->snd_una < ti->ti_ack <= tp->snd_max
+ * then advance tp->snd_una to ti->ti_ack and drop
+ * data from the retransmission queue. If this ACK reflects
+ * more up to date window information we update our window information.
+ */
+ case TCPS_ESTABLISHED:
+ case TCPS_FIN_WAIT_1:
+ case TCPS_FIN_WAIT_2:
+ case TCPS_CLOSE_WAIT:
+ case TCPS_CLOSING:
+ case TCPS_LAST_ACK:
+ case TCPS_TIME_WAIT:
+
+ if (SEQ_LEQ(ti->ti_ack, tp->snd_una)) {
+ if (ti->ti_len == 0 && tiwin == tp->snd_wnd) {
+ DEBUG_MISC(" dup ack m = %p so = %p", m, so);
+ /*
+ * If we have outstanding data (other than
+ * a window probe), this is a completely
+ * duplicate ack (ie, window info didn't
+ * change), the ack is the biggest we've
+ * seen and we've seen exactly our rexmt
+ * threshold of them, assume a packet
+ * has been dropped and retransmit it.
+ * Kludge snd_nxt & the congestion
+ * window so we send only this one
+ * packet.
+ *
+ * We know we're losing at the current
+ * window size so do congestion avoidance
+ * (set ssthresh to half the current window
+ * and pull our congestion window back to
+ * the new ssthresh).
+ *
+ * Dup acks mean that packets have left the
+ * network (they're now cached at the receiver)
+ * so bump cwnd by the amount in the receiver
+ * to keep a constant cwnd packets in the
+ * network.
+ */
+ if (tp->t_timer[TCPT_REXMT] == 0 ||
+ ti->ti_ack != tp->snd_una)
+ tp->t_dupacks = 0;
+ else if (++tp->t_dupacks == TCPREXMTTHRESH) {
+ tcp_seq onxt = tp->snd_nxt;
+ unsigned win =
+ MIN(tp->snd_wnd, tp->snd_cwnd) /
+ 2 / tp->t_maxseg;
+
+ if (win < 2)
+ win = 2;
+ tp->snd_ssthresh = win * tp->t_maxseg;
+ tp->t_timer[TCPT_REXMT] = 0;
+ tp->t_rtt = 0;
+ tp->snd_nxt = ti->ti_ack;
+ tp->snd_cwnd = tp->t_maxseg;
+ (void) tcp_output(tp);
+ tp->snd_cwnd = tp->snd_ssthresh +
+ tp->t_maxseg * tp->t_dupacks;
+ if (SEQ_GT(onxt, tp->snd_nxt))
+ tp->snd_nxt = onxt;
+ goto drop;
+ } else if (tp->t_dupacks > TCPREXMTTHRESH) {
+ tp->snd_cwnd += tp->t_maxseg;
+ (void) tcp_output(tp);
+ goto drop;
+ }
+ } else
+ tp->t_dupacks = 0;
+ break;
+ }
+ synrx_to_est:
+ /*
+ * If the congestion window was inflated to account
+ * for the other side's cached packets, retract it.
+ */
+ if (tp->t_dupacks > TCPREXMTTHRESH &&
+ tp->snd_cwnd > tp->snd_ssthresh)
+ tp->snd_cwnd = tp->snd_ssthresh;
+ tp->t_dupacks = 0;
+ if (SEQ_GT(ti->ti_ack, tp->snd_max)) {
+ goto dropafterack;
+ }
+ acked = ti->ti_ack - tp->snd_una;
+
+ /*
+ * If transmit timer is running and timed sequence
+ * number was acked, update smoothed round trip time.
+ * Since we now have an rtt measurement, cancel the
+ * timer backoff (cf., Phil Karn's retransmit alg.).
+ * Recompute the initial retransmit timer.
+ */
+ if (tp->t_rtt && SEQ_GT(ti->ti_ack, tp->t_rtseq))
+ tcp_xmit_timer(tp,tp->t_rtt);
+
+ /*
+ * If all outstanding data is acked, stop retransmit
+ * timer and remember to restart (more output or persist).
+ * If there is more data to be acked, restart retransmit
+ * timer, using current (possibly backed-off) value.
+ */
+ if (ti->ti_ack == tp->snd_max) {
+ tp->t_timer[TCPT_REXMT] = 0;
+ needoutput = 1;
+ } else if (tp->t_timer[TCPT_PERSIST] == 0)
+ tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
+ /*
+ * When new data is acked, open the congestion window.
+ * If the window gives us less than ssthresh packets
+ * in flight, open exponentially (maxseg per packet).
+ * Otherwise open linearly: maxseg per window
+ * (maxseg^2 / cwnd per packet).
+ */
+ {
+ register unsigned cw = tp->snd_cwnd;
+ register unsigned incr = tp->t_maxseg;
+
+ if (cw > tp->snd_ssthresh)
+ incr = incr * incr / cw;
+ tp->snd_cwnd = MIN(cw + incr, TCP_MAXWIN << tp->snd_scale);
+ }
+ if (acked > so->so_snd.sb_cc) {
+ tp->snd_wnd -= so->so_snd.sb_cc;
+ sodrop(so, (int)so->so_snd.sb_cc);
+ ourfinisacked = 1;
+ } else {
+ sodrop(so, acked);
+ tp->snd_wnd -= acked;
+ ourfinisacked = 0;
+ }
+ tp->snd_una = ti->ti_ack;
+ if (SEQ_LT(tp->snd_nxt, tp->snd_una))
+ tp->snd_nxt = tp->snd_una;
+
+ switch (tp->t_state) {
+
+ /*
+ * In FIN_WAIT_1 STATE in addition to the processing
+ * for the ESTABLISHED state if our FIN is now acknowledged
+ * then enter FIN_WAIT_2.
+ */
+ case TCPS_FIN_WAIT_1:
+ if (ourfinisacked) {
+ /*
+ * If we can't receive any more
+ * data, then closing user can proceed.
+ * Starting the timer is contrary to the
+ * specification, but if we don't get a FIN
+ * we'll hang forever.
+ */
+ if (so->so_state & SS_FCANTRCVMORE) {
+ tp->t_timer[TCPT_2MSL] = TCP_MAXIDLE;
+ }
+ tp->t_state = TCPS_FIN_WAIT_2;
+ }
+ break;
+
+ /*
+ * In CLOSING STATE in addition to the processing for
+ * the ESTABLISHED state if the ACK acknowledges our FIN
+ * then enter the TIME-WAIT state, otherwise ignore
+ * the segment.
+ */
+ case TCPS_CLOSING:
+ if (ourfinisacked) {
+ tp->t_state = TCPS_TIME_WAIT;
+ tcp_canceltimers(tp);
+ tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
+ }
+ break;
+
+ /*
+ * In LAST_ACK, we may still be waiting for data to drain
+ * and/or to be acked, as well as for the ack of our FIN.
+ * If our FIN is now acknowledged, delete the TCB,
+ * enter the closed state and return.
+ */
+ case TCPS_LAST_ACK:
+ if (ourfinisacked) {
+ tcp_close(tp);
+ goto drop;
+ }
+ break;
+
+ /*
+ * In TIME_WAIT state the only thing that should arrive
+ * is a retransmission of the remote FIN. Acknowledge
+ * it and restart the finack timer.
+ */
+ case TCPS_TIME_WAIT:
+ tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
+ goto dropafterack;
+ }
+ } /* switch(tp->t_state) */
+
+step6:
+ /*
+ * Update window information.
+ * Don't look at window if no ACK: TAC's send garbage on first SYN.
+ */
+ if ((tiflags & TH_ACK) &&
+ (SEQ_LT(tp->snd_wl1, ti->ti_seq) ||
+ (tp->snd_wl1 == ti->ti_seq && (SEQ_LT(tp->snd_wl2, ti->ti_ack) ||
+ (tp->snd_wl2 == ti->ti_ack && tiwin > tp->snd_wnd))))) {
+ tp->snd_wnd = tiwin;
+ tp->snd_wl1 = ti->ti_seq;
+ tp->snd_wl2 = ti->ti_ack;
+ if (tp->snd_wnd > tp->max_sndwnd)
+ tp->max_sndwnd = tp->snd_wnd;
+ needoutput = 1;
+ }
+
+ /*
+ * Process segments with URG.
+ */
+ if ((tiflags & TH_URG) && ti->ti_urp &&
+ TCPS_HAVERCVDFIN(tp->t_state) == 0) {
+ /*
+ * This is a kludge, but if we receive and accept
+ * random urgent pointers, we'll crash in
+ * soreceive. It's hard to imagine someone
+ * actually wanting to send this much urgent data.
+ */
+ if (ti->ti_urp + so->so_rcv.sb_cc > so->so_rcv.sb_datalen) {
+ ti->ti_urp = 0;
+ tiflags &= ~TH_URG;
+ goto dodata;
+ }
+ /*
+ * If this segment advances the known urgent pointer,
+ * then mark the data stream. This should not happen
+ * in CLOSE_WAIT, CLOSING, LAST_ACK or TIME_WAIT STATES since
+ * a FIN has been received from the remote side.
+ * In these states we ignore the URG.
+ *
+ * According to RFC961 (Assigned Protocols),
+ * the urgent pointer points to the last octet
+ * of urgent data. We continue, however,
+ * to consider it to indicate the first octet
+ * of data past the urgent section as the original
+ * spec states (in one of two places).
+ */
+ if (SEQ_GT(ti->ti_seq+ti->ti_urp, tp->rcv_up)) {
+ tp->rcv_up = ti->ti_seq + ti->ti_urp;
+ so->so_urgc = so->so_rcv.sb_cc +
+ (tp->rcv_up - tp->rcv_nxt); /* -1; */
+ tp->rcv_up = ti->ti_seq + ti->ti_urp;
+
+ }
+ } else
+ /*
+ * If no out of band data is expected,
+ * pull receive urgent pointer along
+ * with the receive window.
+ */
+ if (SEQ_GT(tp->rcv_nxt, tp->rcv_up))
+ tp->rcv_up = tp->rcv_nxt;
+dodata:
+
+ /*
+ * If this is a small packet, then ACK now - with Nagel
+ * congestion avoidance sender won't send more until
+ * he gets an ACK.
+ */
+ if (ti->ti_len && (unsigned)ti->ti_len <= 5 &&
+ ((struct tcpiphdr_2 *)ti)->first_char == (char)27) {
+ tp->t_flags |= TF_ACKNOW;
+ }
+
+ /*
+ * Process the segment text, merging it into the TCP sequencing queue,
+ * and arranging for acknowledgment of receipt if necessary.
+ * This process logically involves adjusting tp->rcv_wnd as data
+ * is presented to the user (this happens in tcp_usrreq.c,
+ * case PRU_RCVD). If a FIN has already been received on this
+ * connection then we just ignore the text.
+ */
+ if ((ti->ti_len || (tiflags&TH_FIN)) &&
+ TCPS_HAVERCVDFIN(tp->t_state) == 0) {
+ TCP_REASS(tp, ti, m, so, tiflags);
+ } else {
+ m_free(m);
+ tiflags &= ~TH_FIN;
+ }
+
+ /*
+ * If FIN is received ACK the FIN and let the user know
+ * that the connection is closing.
+ */
+ if (tiflags & TH_FIN) {
+ if (TCPS_HAVERCVDFIN(tp->t_state) == 0) {
+ /*
+ * If we receive a FIN we can't send more data,
+ * set it SS_FDRAIN
+ * Shutdown the socket if there is no rx data in the
+ * buffer.
+ * soread() is called on completion of shutdown() and
+ * will got to TCPS_LAST_ACK, and use tcp_output()
+ * to send the FIN.
+ */
+ sofwdrain(so);
+
+ tp->t_flags |= TF_ACKNOW;
+ tp->rcv_nxt++;
+ }
+ switch (tp->t_state) {
+
+ /*
+ * In SYN_RECEIVED and ESTABLISHED STATES
+ * enter the CLOSE_WAIT state.
+ */
+ case TCPS_SYN_RECEIVED:
+ case TCPS_ESTABLISHED:
+ if(so->so_emu == EMU_CTL) /* no shutdown on socket */
+ tp->t_state = TCPS_LAST_ACK;
+ else
+ tp->t_state = TCPS_CLOSE_WAIT;
+ break;
+
+ /*
+ * If still in FIN_WAIT_1 STATE FIN has not been acked so
+ * enter the CLOSING state.
+ */
+ case TCPS_FIN_WAIT_1:
+ tp->t_state = TCPS_CLOSING;
+ break;
+
+ /*
+ * In FIN_WAIT_2 state enter the TIME_WAIT state,
+ * starting the time-wait timer, turning off the other
+ * standard timers.
+ */
+ case TCPS_FIN_WAIT_2:
+ tp->t_state = TCPS_TIME_WAIT;
+ tcp_canceltimers(tp);
+ tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
+ break;
+
+ /*
+ * In TIME_WAIT state restart the 2 MSL time_wait timer.
+ */
+ case TCPS_TIME_WAIT:
+ tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
+ break;
+ }
+ }
+
+ /*
+ * Return any desired output.
+ */
+ if (needoutput || (tp->t_flags & TF_ACKNOW)) {
+ (void) tcp_output(tp);
+ }
+ return;
+
+dropafterack:
+ /*
+ * Generate an ACK dropping incoming segment if it occupies
+ * sequence space, where the ACK reflects our state.
+ */
+ if (tiflags & TH_RST)
+ goto drop;
+ m_free(m);
+ tp->t_flags |= TF_ACKNOW;
+ (void) tcp_output(tp);
+ return;
+
+dropwithreset:
+ /* reuses m if m!=NULL, m_free() unnecessary */
+ if (tiflags & TH_ACK)
+ tcp_respond(tp, ti, m, (tcp_seq)0, ti->ti_ack, TH_RST, af);
+ else {
+ if (tiflags & TH_SYN) ti->ti_len++;
+ tcp_respond(tp, ti, m, ti->ti_seq + ti->ti_len, (tcp_seq) 0,
+ TH_RST | TH_ACK, af);
+ }
+
+ return;
+
+drop:
+ /*
+ * Drop space held by incoming segment and return.
+ */
+ m_free(m);
+}
+
+static void
+tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt, struct tcpiphdr *ti)
+{
+ uint16_t mss;
+ int opt, optlen;
+
+ DEBUG_CALL("tcp_dooptions");
+ DEBUG_ARG("tp = %p cnt=%i", tp, cnt);
+
+ for (; cnt > 0; cnt -= optlen, cp += optlen) {
+ opt = cp[0];
+ if (opt == TCPOPT_EOL)
+ break;
+ if (opt == TCPOPT_NOP)
+ optlen = 1;
+ else {
+ optlen = cp[1];
+ if (optlen <= 0)
+ break;
+ }
+ switch (opt) {
+
+ default:
+ continue;
+
+ case TCPOPT_MAXSEG:
+ if (optlen != TCPOLEN_MAXSEG)
+ continue;
+ if (!(ti->ti_flags & TH_SYN))
+ continue;
+ memcpy((char *) &mss, (char *) cp + 2, sizeof(mss));
+ NTOHS(mss);
+ (void) tcp_mss(tp, mss); /* sets t_maxseg */
+ break;
+ }
+ }
+}
+
+/*
+ * Collect new round-trip time estimate
+ * and update averages and current timeout.
+ */
+
+static void
+tcp_xmit_timer(register struct tcpcb *tp, int rtt)
+{
+ register short delta;
+
+ DEBUG_CALL("tcp_xmit_timer");
+ DEBUG_ARG("tp = %p", tp);
+ DEBUG_ARG("rtt = %d", rtt);
+
+ if (tp->t_srtt != 0) {
+ /*
+ * srtt is stored as fixed point with 3 bits after the
+ * binary point (i.e., scaled by 8). The following magic
+ * is equivalent to the smoothing algorithm in rfc793 with
+ * an alpha of .875 (srtt = rtt/8 + srtt*7/8 in fixed
+ * point). Adjust rtt to origin 0.
+ */
+ delta = rtt - 1 - (tp->t_srtt >> TCP_RTT_SHIFT);
+ if ((tp->t_srtt += delta) <= 0)
+ tp->t_srtt = 1;
+ /*
+ * We accumulate a smoothed rtt variance (actually, a
+ * smoothed mean difference), then set the retransmit
+ * timer to smoothed rtt + 4 times the smoothed variance.
+ * rttvar is stored as fixed point with 2 bits after the
+ * binary point (scaled by 4). The following is
+ * equivalent to rfc793 smoothing with an alpha of .75
+ * (rttvar = rttvar*3/4 + |delta| / 4). This replaces
+ * rfc793's wired-in beta.
+ */
+ if (delta < 0)
+ delta = -delta;
+ delta -= (tp->t_rttvar >> TCP_RTTVAR_SHIFT);
+ if ((tp->t_rttvar += delta) <= 0)
+ tp->t_rttvar = 1;
+ } else {
+ /*
+ * No rtt measurement yet - use the unsmoothed rtt.
+ * Set the variance to half the rtt (so our first
+ * retransmit happens at 3*rtt).
+ */
+ tp->t_srtt = rtt << TCP_RTT_SHIFT;
+ tp->t_rttvar = rtt << (TCP_RTTVAR_SHIFT - 1);
+ }
+ tp->t_rtt = 0;
+ tp->t_rxtshift = 0;
+
+ /*
+ * the retransmit should happen at rtt + 4 * rttvar.
+ * Because of the way we do the smoothing, srtt and rttvar
+ * will each average +1/2 tick of bias. When we compute
+ * the retransmit timer, we want 1/2 tick of rounding and
+ * 1 extra tick because of +-1/2 tick uncertainty in the
+ * firing of the timer. The bias will give us exactly the
+ * 1.5 tick we need. But, because the bias is
+ * statistical, we have to test that we don't drop below
+ * the minimum feasible timer (which is 2 ticks).
+ */
+ TCPT_RANGESET(tp->t_rxtcur, TCP_REXMTVAL(tp),
+ (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */
+
+ /*
+ * We received an ack for a packet that wasn't retransmitted;
+ * it is probably safe to discard any error indications we've
+ * received recently. This isn't quite right, but close enough
+ * for now (a route might have failed after we sent a segment,
+ * and the return path might not be symmetrical).
+ */
+ tp->t_softerror = 0;
+}
+
+/*
+ * Determine a reasonable value for maxseg size.
+ * If the route is known, check route for mtu.
+ * If none, use an mss that can be handled on the outgoing
+ * interface without forcing IP to fragment; if bigger than
+ * an mbuf cluster (MCLBYTES), round down to nearest multiple of MCLBYTES
+ * to utilize large mbufs. If no route is found, route has no mtu,
+ * or the destination isn't local, use a default, hopefully conservative
+ * size (usually 512 or the default IP max size, but no more than the mtu
+ * of the interface), as we can't discover anything about intervening
+ * gateways or networks. We also initialize the congestion/slow start
+ * window to be a single segment if the destination isn't local.
+ * While looking at the routing entry, we also initialize other path-dependent
+ * parameters from pre-set or cached values in the routing entry.
+ */
+
+int
+tcp_mss(struct tcpcb *tp, unsigned offer)
+{
+ struct socket *so = tp->t_socket;
+ int mss;
+
+ DEBUG_CALL("tcp_mss");
+ DEBUG_ARG("tp = %p", tp);
+ DEBUG_ARG("offer = %d", offer);
+
+ switch (so->so_ffamily) {
+ case AF_INET:
+ mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr)
+ - sizeof(struct ip);
+ break;
+ case AF_INET6:
+ mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr)
+ - sizeof(struct ip6);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ if (offer)
+ mss = MIN(mss, offer);
+ mss = MAX(mss, 32);
+ if (mss < tp->t_maxseg || offer != 0)
+ tp->t_maxseg = mss;
+
+ tp->snd_cwnd = mss;
+
+ sbreserve(&so->so_snd, TCP_SNDSPACE + ((TCP_SNDSPACE % mss) ?
+ (mss - (TCP_SNDSPACE % mss)) :
+ 0));
+ sbreserve(&so->so_rcv, TCP_RCVSPACE + ((TCP_RCVSPACE % mss) ?
+ (mss - (TCP_RCVSPACE % mss)) :
+ 0));
+
+ DEBUG_MISC(" returning mss = %d", mss);
+
+ return mss;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_output.c 8.3 (Berkeley) 12/30/93
+ * tcp_output.c,v 1.3 1994/09/15 10:36:55 davidg Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+static const uint8_t tcp_outflags[TCP_NSTATES] = {
+ TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK,
+ TH_ACK, TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK,
+ TH_FIN|TH_ACK, TH_ACK, TH_ACK,
+};
+
+
+#undef MAX_TCPOPTLEN
+#define MAX_TCPOPTLEN 32 /* max # bytes that go in options */
+
+/*
+ * Tcp output routine: figure out what should be sent and send it.
+ */
+int
+tcp_output(struct tcpcb *tp)
+{
+ register struct socket *so = tp->t_socket;
+ register long len, win;
+ int off, flags, error;
+ register struct mbuf *m;
+ register struct tcpiphdr *ti, tcpiph_save;
+ struct ip *ip;
+ struct ip6 *ip6;
+ uint8_t opt[MAX_TCPOPTLEN];
+ unsigned optlen, hdrlen;
+ int idle, sendalot;
+
+ DEBUG_CALL("tcp_output");
+ DEBUG_ARG("tp = %p", tp);
+
+ /*
+ * Determine length of data that should be transmitted,
+ * and flags that will be used.
+ * If there is some data or critical controls (SYN, RST)
+ * to send, then transmit; otherwise, investigate further.
+ */
+ idle = (tp->snd_max == tp->snd_una);
+ if (idle && tp->t_idle >= tp->t_rxtcur)
+ /*
+ * We have been idle for "a while" and no acks are
+ * expected to clock out any data we send --
+ * slow start to get ack "clock" running again.
+ */
+ tp->snd_cwnd = tp->t_maxseg;
+again:
+ sendalot = 0;
+ off = tp->snd_nxt - tp->snd_una;
+ win = MIN(tp->snd_wnd, tp->snd_cwnd);
+
+ flags = tcp_outflags[tp->t_state];
+
+ DEBUG_MISC(" --- tcp_output flags = 0x%x", flags);
+
+ /*
+ * If in persist timeout with window of 0, send 1 byte.
+ * Otherwise, if window is small but nonzero
+ * and timer expired, we will send what we can
+ * and go to transmit state.
+ */
+ if (tp->t_force) {
+ if (win == 0) {
+ /*
+ * If we still have some data to send, then
+ * clear the FIN bit. Usually this would
+ * happen below when it realizes that we
+ * aren't sending all the data. However,
+ * if we have exactly 1 byte of unset data,
+ * then it won't clear the FIN bit below,
+ * and if we are in persist state, we wind
+ * up sending the packet without recording
+ * that we sent the FIN bit.
+ *
+ * We can't just blindly clear the FIN bit,
+ * because if we don't have any more data
+ * to send then the probe will be the FIN
+ * itself.
+ */
+ if (off < so->so_snd.sb_cc)
+ flags &= ~TH_FIN;
+ win = 1;
+ } else {
+ tp->t_timer[TCPT_PERSIST] = 0;
+ tp->t_rxtshift = 0;
+ }
+ }
+
+ len = MIN(so->so_snd.sb_cc, win) - off;
+
+ if (len < 0) {
+ /*
+ * If FIN has been sent but not acked,
+ * but we haven't been called to retransmit,
+ * len will be -1. Otherwise, window shrank
+ * after we sent into it. If window shrank to 0,
+ * cancel pending retransmit and pull snd_nxt
+ * back to (closed) window. We will enter persist
+ * state below. If the window didn't close completely,
+ * just wait for an ACK.
+ */
+ len = 0;
+ if (win == 0) {
+ tp->t_timer[TCPT_REXMT] = 0;
+ tp->snd_nxt = tp->snd_una;
+ }
+ }
+
+ if (len > tp->t_maxseg) {
+ len = tp->t_maxseg;
+ sendalot = 1;
+ }
+ if (SEQ_LT(tp->snd_nxt + len, tp->snd_una + so->so_snd.sb_cc))
+ flags &= ~TH_FIN;
+
+ win = sbspace(&so->so_rcv);
+
+ /*
+ * Sender silly window avoidance. If connection is idle
+ * and can send all data, a maximum segment,
+ * at least a maximum default-size segment do it,
+ * or are forced, do it; otherwise don't bother.
+ * If peer's buffer is tiny, then send
+ * when window is at least half open.
+ * If retransmitting (possibly after persist timer forced us
+ * to send into a small window), then must resend.
+ */
+ if (len) {
+ if (len == tp->t_maxseg)
+ goto send;
+ if ((1 || idle || tp->t_flags & TF_NODELAY) &&
+ len + off >= so->so_snd.sb_cc)
+ goto send;
+ if (tp->t_force)
+ goto send;
+ if (len >= tp->max_sndwnd / 2 && tp->max_sndwnd > 0)
+ goto send;
+ if (SEQ_LT(tp->snd_nxt, tp->snd_max))
+ goto send;
+ }
+
+ /*
+ * Compare available window to amount of window
+ * known to peer (as advertised window less
+ * next expected input). If the difference is at least two
+ * max size segments, or at least 50% of the maximum possible
+ * window, then want to send a window update to peer.
+ */
+ if (win > 0) {
+ /*
+ * "adv" is the amount we can increase the window,
+ * taking into account that we are limited by
+ * TCP_MAXWIN << tp->rcv_scale.
+ */
+ long adv = MIN(win, (long)TCP_MAXWIN << tp->rcv_scale) -
+ (tp->rcv_adv - tp->rcv_nxt);
+
+ if (adv >= (long) (2 * tp->t_maxseg))
+ goto send;
+ if (2 * adv >= (long) so->so_rcv.sb_datalen)
+ goto send;
+ }
+
+ /*
+ * Send if we owe peer an ACK.
+ */
+ if (tp->t_flags & TF_ACKNOW)
+ goto send;
+ if (flags & (TH_SYN|TH_RST))
+ goto send;
+ if (SEQ_GT(tp->snd_up, tp->snd_una))
+ goto send;
+ /*
+ * If our state indicates that FIN should be sent
+ * and we have not yet done so, or we're retransmitting the FIN,
+ * then we need to send.
+ */
+ if (flags & TH_FIN &&
+ ((tp->t_flags & TF_SENTFIN) == 0 || tp->snd_nxt == tp->snd_una))
+ goto send;
+
+ /*
+ * TCP window updates are not reliable, rather a polling protocol
+ * using ``persist'' packets is used to insure receipt of window
+ * updates. The three ``states'' for the output side are:
+ * idle not doing retransmits or persists
+ * persisting to move a small or zero window
+ * (re)transmitting and thereby not persisting
+ *
+ * tp->t_timer[TCPT_PERSIST]
+ * is set when we are in persist state.
+ * tp->t_force
+ * is set when we are called to send a persist packet.
+ * tp->t_timer[TCPT_REXMT]
+ * is set when we are retransmitting
+ * The output side is idle when both timers are zero.
+ *
+ * If send window is too small, there is data to transmit, and no
+ * retransmit or persist is pending, then go to persist state.
+ * If nothing happens soon, send when timer expires:
+ * if window is nonzero, transmit what we can,
+ * otherwise force out a byte.
+ */
+ if (so->so_snd.sb_cc && tp->t_timer[TCPT_REXMT] == 0 &&
+ tp->t_timer[TCPT_PERSIST] == 0) {
+ tp->t_rxtshift = 0;
+ tcp_setpersist(tp);
+ }
+
+ /*
+ * No reason to send a segment, just return.
+ */
+ return (0);
+
+send:
+ /*
+ * Before ESTABLISHED, force sending of initial options
+ * unless TCP set not to do any options.
+ * NOTE: we assume that the IP/TCP header plus TCP options
+ * always fit in a single mbuf, leaving room for a maximum
+ * link header, i.e.
+ * max_linkhdr + sizeof (struct tcpiphdr) + optlen <= MHLEN
+ */
+ optlen = 0;
+ hdrlen = sizeof (struct tcpiphdr);
+ if (flags & TH_SYN) {
+ tp->snd_nxt = tp->iss;
+ if ((tp->t_flags & TF_NOOPT) == 0) {
+ uint16_t mss;
+
+ opt[0] = TCPOPT_MAXSEG;
+ opt[1] = 4;
+ mss = htons((uint16_t) tcp_mss(tp, 0));
+ memcpy((char *)(opt + 2), (char *)&mss, sizeof(mss));
+ optlen = 4;
+ }
+ }
+
+ hdrlen += optlen;
+
+ /*
+ * Adjust data length if insertion of options will
+ * bump the packet length beyond the t_maxseg length.
+ */
+ if (len > tp->t_maxseg - optlen) {
+ len = tp->t_maxseg - optlen;
+ sendalot = 1;
+ }
+
+ /*
+ * Grab a header mbuf, attaching a copy of data to
+ * be transmitted, and initialize the header from
+ * the template for sends on this connection.
+ */
+ if (len) {
+ m = m_get(so->slirp);
+ if (m == NULL) {
+ error = 1;
+ goto out;
+ }
+ m->m_data += IF_MAXLINKHDR;
+ m->m_len = hdrlen;
+
+ sbcopy(&so->so_snd, off, (int) len, mtod(m, char *) + hdrlen);
+ m->m_len += len;
+
+ /*
+ * If we're sending everything we've got, set PUSH.
+ * (This will keep happy those implementations which only
+ * give data to the user when a buffer fills or
+ * a PUSH comes in.)
+ */
+ if (off + len == so->so_snd.sb_cc)
+ flags |= TH_PUSH;
+ } else {
+ m = m_get(so->slirp);
+ if (m == NULL) {
+ error = 1;
+ goto out;
+ }
+ m->m_data += IF_MAXLINKHDR;
+ m->m_len = hdrlen;
+ }
+
+ ti = mtod(m, struct tcpiphdr *);
+
+ memcpy((char *)ti, &tp->t_template, sizeof (struct tcpiphdr));
+
+ /*
+ * Fill in fields, remembering maximum advertised
+ * window for use in delaying messages about window sizes.
+ * If resending a FIN, be sure not to use a new sequence number.
+ */
+ if (flags & TH_FIN && tp->t_flags & TF_SENTFIN &&
+ tp->snd_nxt == tp->snd_max)
+ tp->snd_nxt--;
+ /*
+ * If we are doing retransmissions, then snd_nxt will
+ * not reflect the first unsent octet. For ACK only
+ * packets, we do not want the sequence number of the
+ * retransmitted packet, we want the sequence number
+ * of the next unsent octet. So, if there is no data
+ * (and no SYN or FIN), use snd_max instead of snd_nxt
+ * when filling in ti_seq. But if we are in persist
+ * state, snd_max might reflect one byte beyond the
+ * right edge of the window, so use snd_nxt in that
+ * case, since we know we aren't doing a retransmission.
+ * (retransmit and persist are mutually exclusive...)
+ */
+ if (len || (flags & (TH_SYN|TH_FIN)) || tp->t_timer[TCPT_PERSIST])
+ ti->ti_seq = htonl(tp->snd_nxt);
+ else
+ ti->ti_seq = htonl(tp->snd_max);
+ ti->ti_ack = htonl(tp->rcv_nxt);
+ if (optlen) {
+ memcpy((char *)(ti + 1), (char *)opt, optlen);
+ ti->ti_off = (sizeof (struct tcphdr) + optlen) >> 2;
+ }
+ ti->ti_flags = flags;
+ /*
+ * Calculate receive window. Don't shrink window,
+ * but avoid silly window syndrome.
+ */
+ if (win < (long)(so->so_rcv.sb_datalen / 4) && win < (long)tp->t_maxseg)
+ win = 0;
+ if (win > (long)TCP_MAXWIN << tp->rcv_scale)
+ win = (long)TCP_MAXWIN << tp->rcv_scale;
+ if (win < (long)(tp->rcv_adv - tp->rcv_nxt))
+ win = (long)(tp->rcv_adv - tp->rcv_nxt);
+ ti->ti_win = htons((uint16_t) (win>>tp->rcv_scale));
+
+ if (SEQ_GT(tp->snd_up, tp->snd_una)) {
+ ti->ti_urp = htons((uint16_t)(tp->snd_up - ntohl(ti->ti_seq)));
+ ti->ti_flags |= TH_URG;
+ } else
+ /*
+ * If no urgent pointer to send, then we pull
+ * the urgent pointer to the left edge of the send window
+ * so that it doesn't drift into the send window on sequence
+ * number wraparound.
+ */
+ tp->snd_up = tp->snd_una; /* drag it along */
+
+ /*
+ * Put TCP length in extended header, and then
+ * checksum extended header and data.
+ */
+ if (len + optlen)
+ ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) +
+ optlen + len));
+ ti->ti_sum = cksum(m, (int)(hdrlen + len));
+
+ /*
+ * In transmit state, time the transmission and arrange for
+ * the retransmit. In persist state, just set snd_max.
+ */
+ if (tp->t_force == 0 || tp->t_timer[TCPT_PERSIST] == 0) {
+ tcp_seq startseq = tp->snd_nxt;
+
+ /*
+ * Advance snd_nxt over sequence space of this segment.
+ */
+ if (flags & (TH_SYN|TH_FIN)) {
+ if (flags & TH_SYN)
+ tp->snd_nxt++;
+ if (flags & TH_FIN) {
+ tp->snd_nxt++;
+ tp->t_flags |= TF_SENTFIN;
+ }
+ }
+ tp->snd_nxt += len;
+ if (SEQ_GT(tp->snd_nxt, tp->snd_max)) {
+ tp->snd_max = tp->snd_nxt;
+ /*
+ * Time this transmission if not a retransmission and
+ * not currently timing anything.
+ */
+ if (tp->t_rtt == 0) {
+ tp->t_rtt = 1;
+ tp->t_rtseq = startseq;
+ }
+ }
+
+ /*
+ * Set retransmit timer if not currently set,
+ * and not doing an ack or a keep-alive probe.
+ * Initial value for retransmit timer is smoothed
+ * round-trip time + 2 * round-trip time variance.
+ * Initialize shift counter which is used for backoff
+ * of retransmit time.
+ */
+ if (tp->t_timer[TCPT_REXMT] == 0 &&
+ tp->snd_nxt != tp->snd_una) {
+ tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
+ if (tp->t_timer[TCPT_PERSIST]) {
+ tp->t_timer[TCPT_PERSIST] = 0;
+ tp->t_rxtshift = 0;
+ }
+ }
+ } else
+ if (SEQ_GT(tp->snd_nxt + len, tp->snd_max))
+ tp->snd_max = tp->snd_nxt + len;
+
+ /*
+ * Fill in IP length and desired time to live and
+ * send to IP level. There should be a better way
+ * to handle ttl and tos; we could keep them in
+ * the template, but need a way to checksum without them.
+ */
+ m->m_len = hdrlen + len; /* XXX Needed? m_len should be correct */
+ tcpiph_save = *mtod(m, struct tcpiphdr *);
+
+ switch (so->so_ffamily) {
+ case AF_INET:
+ m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip);
+ m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip);
+ ip = mtod(m, struct ip *);
+
+ ip->ip_len = m->m_len;
+ ip->ip_dst = tcpiph_save.ti_dst;
+ ip->ip_src = tcpiph_save.ti_src;
+ ip->ip_p = tcpiph_save.ti_pr;
+
+ ip->ip_ttl = IPDEFTTL;
+ ip->ip_tos = so->so_iptos;
+ error = ip_output(so, m);
+ break;
+
+ case AF_INET6:
+ m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip6);
+ m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip6);
+ ip6 = mtod(m, struct ip6 *);
+
+ ip6->ip_pl = tcpiph_save.ti_len;
+ ip6->ip_dst = tcpiph_save.ti_dst6;
+ ip6->ip_src = tcpiph_save.ti_src6;
+ ip6->ip_nh = tcpiph_save.ti_nh6;
+
+ error = ip6_output(so, m, 0);
+ break;
+
+ default:
+ g_assert_not_reached();
+ }
+
+ if (error) {
+out:
+ return (error);
+ }
+
+ /*
+ * Data sent (as far as we can tell).
+ * If this advertises a larger window than any other segment,
+ * then remember the size of the advertised window.
+ * Any pending ACK has now been sent.
+ */
+ if (win > 0 && SEQ_GT(tp->rcv_nxt+win, tp->rcv_adv))
+ tp->rcv_adv = tp->rcv_nxt + win;
+ tp->last_ack_sent = tp->rcv_nxt;
+ tp->t_flags &= ~(TF_ACKNOW|TF_DELACK);
+ if (sendalot)
+ goto again;
+
+ return (0);
+}
+
+void
+tcp_setpersist(struct tcpcb *tp)
+{
+ int t = ((tp->t_srtt >> 2) + tp->t_rttvar) >> 1;
+
+ /*
+ * Start/restart persistence timer.
+ */
+ TCPT_RANGESET(tp->t_timer[TCPT_PERSIST],
+ t * tcp_backoff[tp->t_rxtshift],
+ TCPTV_PERSMIN, TCPTV_PERSMAX);
+ if (tp->t_rxtshift < TCP_MAXRXTSHIFT)
+ tp->t_rxtshift++;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_subr.c 8.1 (Berkeley) 6/10/93
+ * tcp_subr.c,v 1.5 1994/10/08 22:39:58 phk Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+
+/* patchable/settable parameters for tcp */
+/* Don't do rfc1323 performance enhancements */
+#define TCP_DO_RFC1323 0
+
+/*
+ * Tcp initialization
+ */
+void
+tcp_init(Slirp *slirp)
+{
+ slirp->tcp_iss = 1; /* wrong */
+ slirp->tcb.so_next = slirp->tcb.so_prev = &slirp->tcb;
+ slirp->tcp_last_so = &slirp->tcb;
+}
+
+void tcp_cleanup(Slirp *slirp)
+{
+ while (slirp->tcb.so_next != &slirp->tcb) {
+ tcp_close(sototcpcb(slirp->tcb.so_next));
+ }
+}
+
+/*
+ * Create template to be used to send tcp packets on a connection.
+ * Call after host entry created, fills
+ * in a skeletal tcp/ip header, minimizing the amount of work
+ * necessary when the connection is used.
+ */
+void
+tcp_template(struct tcpcb *tp)
+{
+ struct socket *so = tp->t_socket;
+ register struct tcpiphdr *n = &tp->t_template;
+
+ n->ti_mbuf = NULL;
+ memset(&n->ti, 0, sizeof(n->ti));
+ n->ti_x0 = 0;
+ switch (so->so_ffamily) {
+ case AF_INET:
+ n->ti_pr = IPPROTO_TCP;
+ n->ti_len = htons(sizeof(struct tcphdr));
+ n->ti_src = so->so_faddr;
+ n->ti_dst = so->so_laddr;
+ n->ti_sport = so->so_fport;
+ n->ti_dport = so->so_lport;
+ break;
+
+ case AF_INET6:
+ n->ti_nh6 = IPPROTO_TCP;
+ n->ti_len = htons(sizeof(struct tcphdr));
+ n->ti_src6 = so->so_faddr6;
+ n->ti_dst6 = so->so_laddr6;
+ n->ti_sport = so->so_fport6;
+ n->ti_dport = so->so_lport6;
+ break;
+
+ default:
+ g_assert_not_reached();
+ }
+
+ n->ti_seq = 0;
+ n->ti_ack = 0;
+ n->ti_x2 = 0;
+ n->ti_off = 5;
+ n->ti_flags = 0;
+ n->ti_win = 0;
+ n->ti_sum = 0;
+ n->ti_urp = 0;
+}
+
+/*
+ * Send a single message to the TCP at address specified by
+ * the given TCP/IP header. If m == 0, then we make a copy
+ * of the tcpiphdr at ti and send directly to the addressed host.
+ * This is used to force keep alive messages out using the TCP
+ * template for a connection tp->t_template. If flags are given
+ * then we send a message back to the TCP which originated the
+ * segment ti, and discard the mbuf containing it and any other
+ * attached mbufs.
+ *
+ * In any case the ack and sequence number of the transmitted
+ * segment are as specified by the parameters.
+ */
+void
+tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
+ tcp_seq ack, tcp_seq seq, int flags, unsigned short af)
+{
+ register int tlen;
+ int win = 0;
+
+ DEBUG_CALL("tcp_respond");
+ DEBUG_ARG("tp = %p", tp);
+ DEBUG_ARG("ti = %p", ti);
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("ack = %u", ack);
+ DEBUG_ARG("seq = %u", seq);
+ DEBUG_ARG("flags = %x", flags);
+
+ if (tp)
+ win = sbspace(&tp->t_socket->so_rcv);
+ if (m == NULL) {
+ if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL)
+ return;
+ tlen = 0;
+ m->m_data += IF_MAXLINKHDR;
+ *mtod(m, struct tcpiphdr *) = *ti;
+ ti = mtod(m, struct tcpiphdr *);
+ switch (af) {
+ case AF_INET:
+ ti->ti.ti_i4.ih_x1 = 0;
+ break;
+ case AF_INET6:
+ ti->ti.ti_i6.ih_x1 = 0;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ flags = TH_ACK;
+ } else {
+ /*
+ * ti points into m so the next line is just making
+ * the mbuf point to ti
+ */
+ m->m_data = (char *)ti;
+
+ m->m_len = sizeof (struct tcpiphdr);
+ tlen = 0;
+#define xchg(a,b,type) { type t; t=a; a=b; b=t; }
+ switch (af) {
+ case AF_INET:
+ xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, uint32_t);
+ xchg(ti->ti_dport, ti->ti_sport, uint16_t);
+ break;
+ case AF_INET6:
+ xchg(ti->ti_dst6, ti->ti_src6, struct in6_addr);
+ xchg(ti->ti_dport, ti->ti_sport, uint16_t);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+#undef xchg
+ }
+ ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) + tlen));
+ tlen += sizeof (struct tcpiphdr);
+ m->m_len = tlen;
+
+ ti->ti_mbuf = NULL;
+ ti->ti_x0 = 0;
+ ti->ti_seq = htonl(seq);
+ ti->ti_ack = htonl(ack);
+ ti->ti_x2 = 0;
+ ti->ti_off = sizeof (struct tcphdr) >> 2;
+ ti->ti_flags = flags;
+ if (tp)
+ ti->ti_win = htons((uint16_t) (win >> tp->rcv_scale));
+ else
+ ti->ti_win = htons((uint16_t)win);
+ ti->ti_urp = 0;
+ ti->ti_sum = 0;
+ ti->ti_sum = cksum(m, tlen);
+
+ struct tcpiphdr tcpiph_save = *(mtod(m, struct tcpiphdr *));
+ struct ip *ip;
+ struct ip6 *ip6;
+
+ switch (af) {
+ case AF_INET:
+ m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip);
+ m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip);
+ ip = mtod(m, struct ip *);
+ ip->ip_len = m->m_len;
+ ip->ip_dst = tcpiph_save.ti_dst;
+ ip->ip_src = tcpiph_save.ti_src;
+ ip->ip_p = tcpiph_save.ti_pr;
+
+ if (flags & TH_RST) {
+ ip->ip_ttl = MAXTTL;
+ } else {
+ ip->ip_ttl = IPDEFTTL;
+ }
+
+ ip_output(NULL, m);
+ break;
+
+ case AF_INET6:
+ m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip6);
+ m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
+ - sizeof(struct ip6);
+ ip6 = mtod(m, struct ip6 *);
+ ip6->ip_pl = tcpiph_save.ti_len;
+ ip6->ip_dst = tcpiph_save.ti_dst6;
+ ip6->ip_src = tcpiph_save.ti_src6;
+ ip6->ip_nh = tcpiph_save.ti_nh6;
+
+ ip6_output(NULL, m, 0);
+ break;
+
+ default:
+ g_assert_not_reached();
+ }
+}
+
+/*
+ * Create a new TCP control block, making an
+ * empty reassembly queue and hooking it to the argument
+ * protocol control block.
+ */
+struct tcpcb *
+tcp_newtcpcb(struct socket *so)
+{
+ register struct tcpcb *tp;
+
+ tp = (struct tcpcb *)malloc(sizeof(*tp));
+ if (tp == NULL)
+ return ((struct tcpcb *)0);
+
+ memset((char *) tp, 0, sizeof(struct tcpcb));
+ tp->seg_next = tp->seg_prev = (struct tcpiphdr*)tp;
+ tp->t_maxseg = (so->so_ffamily == AF_INET) ? TCP_MSS : TCP6_MSS;
+
+ tp->t_flags = TCP_DO_RFC1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0;
+ tp->t_socket = so;
+
+ /*
+ * Init srtt to TCPTV_SRTTBASE (0), so we can tell that we have no
+ * rtt estimate. Set rttvar so that srtt + 2 * rttvar gives
+ * reasonable initial retransmit time.
+ */
+ tp->t_srtt = TCPTV_SRTTBASE;
+ tp->t_rttvar = TCPTV_SRTTDFLT << 2;
+ tp->t_rttmin = TCPTV_MIN;
+
+ TCPT_RANGESET(tp->t_rxtcur,
+ ((TCPTV_SRTTBASE >> 2) + (TCPTV_SRTTDFLT << 2)) >> 1,
+ TCPTV_MIN, TCPTV_REXMTMAX);
+
+ tp->snd_cwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT;
+ tp->snd_ssthresh = TCP_MAXWIN << TCP_MAX_WINSHIFT;
+ tp->t_state = TCPS_CLOSED;
+
+ so->so_tcpcb = tp;
+
+ return (tp);
+}
+
+/*
+ * Drop a TCP connection, reporting
+ * the specified error. If connection is synchronized,
+ * then send a RST to peer.
+ */
+struct tcpcb *tcp_drop(struct tcpcb *tp, int err)
+{
+ DEBUG_CALL("tcp_drop");
+ DEBUG_ARG("tp = %p", tp);
+ DEBUG_ARG("errno = %d", errno);
+
+ if (TCPS_HAVERCVDSYN(tp->t_state)) {
+ tp->t_state = TCPS_CLOSED;
+ (void) tcp_output(tp);
+ }
+ return (tcp_close(tp));
+}
+
+/*
+ * Close a TCP control block:
+ * discard all space held by the tcp
+ * discard internet protocol block
+ * wake up any sleepers
+ */
+struct tcpcb *
+tcp_close(struct tcpcb *tp)
+{
+ register struct tcpiphdr *t;
+ struct socket *so = tp->t_socket;
+ Slirp *slirp = so->slirp;
+ register struct mbuf *m;
+
+ DEBUG_CALL("tcp_close");
+ DEBUG_ARG("tp = %p", tp);
+
+ /* free the reassembly queue, if any */
+ t = tcpfrag_list_first(tp);
+ while (!tcpfrag_list_end(t, tp)) {
+ t = tcpiphdr_next(t);
+ m = tcpiphdr_prev(t)->ti_mbuf;
+ remque(tcpiphdr2qlink(tcpiphdr_prev(t)));
+ m_free(m);
+ }
+ free(tp);
+ so->so_tcpcb = NULL;
+ /* clobber input socket cache if we're closing the cached connection */
+ if (so == slirp->tcp_last_so)
+ slirp->tcp_last_so = &slirp->tcb;
+ so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
+ closesocket(so->s);
+ sbfree(&so->so_rcv);
+ sbfree(&so->so_snd);
+ sofree(so);
+ return ((struct tcpcb *)0);
+}
+
+/*
+ * TCP protocol interface to socket abstraction.
+ */
+
+/*
+ * User issued close, and wish to trail through shutdown states:
+ * if never received SYN, just forget it. If got a SYN from peer,
+ * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN.
+ * If already got a FIN from peer, then almost done; go to LAST_ACK
+ * state. In all other cases, have already sent FIN to peer (e.g.
+ * after PRU_SHUTDOWN), and just have to play tedious game waiting
+ * for peer to send FIN or not respond to keep-alives, etc.
+ * We can let the user exit from the close as soon as the FIN is acked.
+ */
+void
+tcp_sockclosed(struct tcpcb *tp)
+{
+
+ DEBUG_CALL("tcp_sockclosed");
+ DEBUG_ARG("tp = %p", tp);
+
+ if (!tp) {
+ return;
+ }
+
+ switch (tp->t_state) {
+
+ case TCPS_CLOSED:
+ case TCPS_LISTEN:
+ case TCPS_SYN_SENT:
+ tp->t_state = TCPS_CLOSED;
+ tp = tcp_close(tp);
+ break;
+
+ case TCPS_SYN_RECEIVED:
+ case TCPS_ESTABLISHED:
+ tp->t_state = TCPS_FIN_WAIT_1;
+ break;
+
+ case TCPS_CLOSE_WAIT:
+ tp->t_state = TCPS_LAST_ACK;
+ break;
+ }
+ tcp_output(tp);
+}
+
+/*
+ * Connect to a host on the Internet
+ * Called by tcp_input
+ * Only do a connect, the tcp fields will be set in tcp_input
+ * return 0 if there's a result of the connect,
+ * else return -1 means we're still connecting
+ * The return value is almost always -1 since the socket is
+ * nonblocking. Connect returns after the SYN is sent, and does
+ * not wait for ACK+SYN.
+ */
+int tcp_fconnect(struct socket *so, unsigned short af)
+{
+ int ret=0;
+
+ DEBUG_CALL("tcp_fconnect");
+ DEBUG_ARG("so = %p", so);
+
+ ret = so->s = slirp_socket(af, SOCK_STREAM, 0);
+ if (ret >= 0) {
+ int opt, s=so->s;
+ struct sockaddr_storage addr;
+
+ slirp_set_nonblock(s);
+ so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
+ slirp_socket_set_fast_reuse(s);
+ opt = 1;
+ setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt));
+ opt = 1;
+ setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt));
+
+ addr = so->fhost.ss;
+ DEBUG_CALL(" connect()ing");
+ sotranslate_out(so, &addr);
+
+ /* We don't care what port we get */
+ ret = connect(s, (struct sockaddr *)&addr, sockaddr_size(&addr));
+
+ /*
+ * If it's not in progress, it failed, so we just return 0,
+ * without clearing SS_NOFDREF
+ */
+ soisfconnecting(so);
+ }
+
+ return(ret);
+}
+
+/*
+ * Accept the socket and connect to the local-host
+ *
+ * We have a problem. The correct thing to do would be
+ * to first connect to the local-host, and only if the
+ * connection is accepted, then do an accept() here.
+ * But, a) we need to know who's trying to connect
+ * to the socket to be able to SYN the local-host, and
+ * b) we are already connected to the foreign host by
+ * the time it gets to accept(), so... We simply accept
+ * here and SYN the local-host.
+ */
+void tcp_connect(struct socket *inso)
+{
+ Slirp *slirp = inso->slirp;
+ struct socket *so;
+ struct sockaddr_storage addr;
+ socklen_t addrlen = sizeof(struct sockaddr_storage);
+ struct tcpcb *tp;
+ int s, opt;
+
+ DEBUG_CALL("tcp_connect");
+ DEBUG_ARG("inso = %p", inso);
+
+ /*
+ * If it's an SS_ACCEPTONCE socket, no need to socreate()
+ * another socket, just use the accept() socket.
+ */
+ if (inso->so_state & SS_FACCEPTONCE) {
+ /* FACCEPTONCE already have a tcpcb */
+ so = inso;
+ } else {
+ so = socreate(slirp);
+ if (tcp_attach(so) < 0) {
+ g_free(so); /* NOT sofree */
+ return;
+ }
+ so->lhost = inso->lhost;
+ so->so_ffamily = inso->so_ffamily;
+ }
+
+ tcp_mss(sototcpcb(so), 0);
+
+ s = accept(inso->s, (struct sockaddr *)&addr, &addrlen);
+ if (s < 0) {
+ tcp_close(sototcpcb(so)); /* This will sofree() as well */
+ return;
+ }
+ slirp_set_nonblock(s);
+ so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
+ slirp_socket_set_fast_reuse(s);
+ opt = 1;
+ setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
+ slirp_socket_set_nodelay(s);
+
+ so->fhost.ss = addr;
+ sotranslate_accept(so);
+
+ /* Close the accept() socket, set right state */
+ if (inso->so_state & SS_FACCEPTONCE) {
+ /* If we only accept once, close the accept() socket */
+ so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
+ closesocket(so->s);
+
+ /* Don't select it yet, even though we have an FD */
+ /* if it's not FACCEPTONCE, it's already NOFDREF */
+ so->so_state = SS_NOFDREF;
+ }
+ so->s = s;
+ so->so_state |= SS_INCOMING;
+
+ so->so_iptos = tcp_tos(so);
+ tp = sototcpcb(so);
+
+ tcp_template(tp);
+
+ tp->t_state = TCPS_SYN_SENT;
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
+ tp->iss = slirp->tcp_iss;
+ slirp->tcp_iss += TCP_ISSINCR/2;
+ tcp_sendseqinit(tp);
+ tcp_output(tp);
+}
+
+/*
+ * Attach a TCPCB to a socket.
+ */
+int
+tcp_attach(struct socket *so)
+{
+ if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL)
+ return -1;
+
+ insque(so, &so->slirp->tcb);
+
+ return 0;
+}
+
+/*
+ * Set the socket's type of service field
+ */
+static const struct tos_t tcptos[] = {
+ {0, 20, IPTOS_THROUGHPUT, 0}, /* ftp data */
+ {21, 21, IPTOS_LOWDELAY, EMU_FTP}, /* ftp control */
+ {0, 23, IPTOS_LOWDELAY, 0}, /* telnet */
+ {0, 80, IPTOS_THROUGHPUT, 0}, /* WWW */
+ {0, 513, IPTOS_LOWDELAY, EMU_RLOGIN|EMU_NOCONNECT}, /* rlogin */
+ {0, 544, IPTOS_LOWDELAY, EMU_KSH}, /* kshell */
+ {0, 543, IPTOS_LOWDELAY, 0}, /* klogin */
+ {0, 6667, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC */
+ {0, 6668, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC undernet */
+ {0, 7070, IPTOS_LOWDELAY, EMU_REALAUDIO }, /* RealAudio control */
+ {0, 113, IPTOS_LOWDELAY, EMU_IDENT }, /* identd protocol */
+ {0, 0, 0, 0}
+};
+
+static struct emu_t *tcpemu = NULL;
+
+/*
+ * Return TOS according to the above table
+ */
+uint8_t
+tcp_tos(struct socket *so)
+{
+ int i = 0;
+ struct emu_t *emup;
+
+ while(tcptos[i].tos) {
+ if ((tcptos[i].fport && (ntohs(so->so_fport) == tcptos[i].fport)) ||
+ (tcptos[i].lport && (ntohs(so->so_lport) == tcptos[i].lport))) {
+ so->so_emu = tcptos[i].emu;
+ return tcptos[i].tos;
+ }
+ i++;
+ }
+
+ /* Nope, lets see if there's a user-added one */
+ for (emup = tcpemu; emup; emup = emup->next) {
+ if ((emup->fport && (ntohs(so->so_fport) == emup->fport)) ||
+ (emup->lport && (ntohs(so->so_lport) == emup->lport))) {
+ so->so_emu = emup->emu;
+ return emup->tos;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Emulate programs that try and connect to us
+ * This includes ftp (the data connection is
+ * initiated by the server) and IRC (DCC CHAT and
+ * DCC SEND) for now
+ *
+ * NOTE: It's possible to crash SLiRP by sending it
+ * unstandard strings to emulate... if this is a problem,
+ * more checks are needed here
+ *
+ * XXX Assumes the whole command came in one packet
+ *
+ * XXX Some ftp clients will have their TOS set to
+ * LOWDELAY and so Nagel will kick in. Because of this,
+ * we'll get the first letter, followed by the rest, so
+ * we simply scan for ORT instead of PORT...
+ * DCC doesn't have this problem because there's other stuff
+ * in the packet before the DCC command.
+ *
+ * Return 1 if the mbuf m is still valid and should be
+ * sbappend()ed
+ *
+ * NOTE: if you return 0 you MUST m_free() the mbuf!
+ */
+int
+tcp_emu(struct socket *so, struct mbuf *m)
+{
+ Slirp *slirp = so->slirp;
+ unsigned n1, n2, n3, n4, n5, n6;
+ char buff[257];
+ uint32_t laddr;
+ unsigned lport;
+ char *bptr;
+
+ DEBUG_CALL("tcp_emu");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+
+ switch(so->so_emu) {
+ int x, i;
+
+ /* TODO: IPv6 */
+ case EMU_IDENT:
+ /*
+ * Identification protocol as per rfc-1413
+ */
+
+ {
+ struct socket *tmpso;
+ struct sockaddr_in addr;
+ socklen_t addrlen = sizeof(struct sockaddr_in);
+ struct sbuf *so_rcv = &so->so_rcv;
+
+ if (m->m_len > so_rcv->sb_datalen
+ - (so_rcv->sb_wptr - so_rcv->sb_data)) {
+ return 1;
+ }
+
+ memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
+ so_rcv->sb_wptr += m->m_len;
+ so_rcv->sb_rptr += m->m_len;
+ m->m_data[m->m_len] = 0; /* NULL terminate */
+ if (strchr(m->m_data, '\r') || strchr(m->m_data, '\n')) {
+ if (sscanf(so_rcv->sb_data, "%u%*[ ,]%u", &n1, &n2) == 2) {
+ HTONS(n1);
+ HTONS(n2);
+ /* n2 is the one on our host */
+ for (tmpso = slirp->tcb.so_next;
+ tmpso != &slirp->tcb;
+ tmpso = tmpso->so_next) {
+ if (tmpso->so_laddr.s_addr == so->so_laddr.s_addr &&
+ tmpso->so_lport == n2 &&
+ tmpso->so_faddr.s_addr == so->so_faddr.s_addr &&
+ tmpso->so_fport == n1) {
+ if (getsockname(tmpso->s,
+ (struct sockaddr *)&addr, &addrlen) == 0)
+ n2 = addr.sin_port;
+ break;
+ }
+ }
+ NTOHS(n1);
+ NTOHS(n2);
+ so_rcv->sb_cc = snprintf(so_rcv->sb_data,
+ so_rcv->sb_datalen,
+ "%d,%d\r\n", n1, n2);
+ so_rcv->sb_rptr = so_rcv->sb_data;
+ so_rcv->sb_wptr = so_rcv->sb_data + so_rcv->sb_cc;
+ }
+ }
+ m_free(m);
+ return 0;
+ }
+
+ case EMU_FTP: /* ftp */
+ *(m->m_data+m->m_len) = 0; /* NUL terminate for strstr */
+ if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) {
+ /*
+ * Need to emulate the PORT command
+ */
+ x = sscanf(bptr, "ORT %u,%u,%u,%u,%u,%u\r\n%256[^\177]",
+ &n1, &n2, &n3, &n4, &n5, &n6, buff);
+ if (x < 6)
+ return 1;
+
+ laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
+ lport = htons((n5 << 8) | (n6));
+
+ if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr,
+ lport, SS_FACCEPTONCE)) == NULL) {
+ return 1;
+ }
+ n6 = ntohs(so->so_fport);
+
+ n5 = (n6 >> 8) & 0xff;
+ n6 &= 0xff;
+
+ laddr = ntohl(so->so_faddr.s_addr);
+
+ n1 = ((laddr >> 24) & 0xff);
+ n2 = ((laddr >> 16) & 0xff);
+ n3 = ((laddr >> 8) & 0xff);
+ n4 = (laddr & 0xff);
+
+ m->m_len = bptr - m->m_data; /* Adjust length */
+ m->m_len += snprintf(bptr, m->m_size - m->m_len,
+ "ORT %d,%d,%d,%d,%d,%d\r\n%s",
+ n1, n2, n3, n4, n5, n6, x==7?buff:"");
+ return 1;
+ } else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) {
+ /*
+ * Need to emulate the PASV response
+ */
+ x = sscanf(bptr, "27 Entering Passive Mode (%u,%u,%u,%u,%u,%u)\r\n%256[^\177]",
+ &n1, &n2, &n3, &n4, &n5, &n6, buff);
+ if (x < 6)
+ return 1;
+
+ laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
+ lport = htons((n5 << 8) | (n6));
+
+ if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr,
+ lport, SS_FACCEPTONCE)) == NULL) {
+ return 1;
+ }
+ n6 = ntohs(so->so_fport);
+
+ n5 = (n6 >> 8) & 0xff;
+ n6 &= 0xff;
+
+ laddr = ntohl(so->so_faddr.s_addr);
+
+ n1 = ((laddr >> 24) & 0xff);
+ n2 = ((laddr >> 16) & 0xff);
+ n3 = ((laddr >> 8) & 0xff);
+ n4 = (laddr & 0xff);
+
+ m->m_len = bptr - m->m_data; /* Adjust length */
+ m->m_len += snprintf(bptr, m->m_size - m->m_len,
+ "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
+ n1, n2, n3, n4, n5, n6, x==7?buff:"");
+
+ return 1;
+ }
+
+ return 1;
+
+ case EMU_KSH:
+ /*
+ * The kshell (Kerberos rsh) and shell services both pass
+ * a local port port number to carry signals to the server
+ * and stderr to the client. It is passed at the beginning
+ * of the connection as a NUL-terminated decimal ASCII string.
+ */
+ so->so_emu = 0;
+ for (lport = 0, i = 0; i < m->m_len-1; ++i) {
+ if (m->m_data[i] < '0' || m->m_data[i] > '9')
+ return 1; /* invalid number */
+ lport *= 10;
+ lport += m->m_data[i] - '0';
+ }
+ if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
+ (so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
+ htons(lport), SS_FACCEPTONCE)) != NULL)
+ m->m_len = snprintf(m->m_data, m->m_size, "%d",
+ ntohs(so->so_fport)) + 1;
+ return 1;
+
+ case EMU_IRC:
+ /*
+ * Need to emulate DCC CHAT, DCC SEND and DCC MOVE
+ */
+ *(m->m_data+m->m_len) = 0; /* NULL terminate the string for strstr */
+ if ((bptr = (char *)strstr(m->m_data, "DCC")) == NULL)
+ return 1;
+
+ /* The %256s is for the broken mIRC */
+ if (sscanf(bptr, "DCC CHAT %256s %u %u", buff, &laddr, &lport) == 3) {
+ if ((so = tcp_listen(slirp, INADDR_ANY, 0,
+ htonl(laddr), htons(lport),
+ SS_FACCEPTONCE)) == NULL) {
+ return 1;
+ }
+ m->m_len = bptr - m->m_data; /* Adjust length */
+ m->m_len += snprintf(bptr, m->m_size,
+ "DCC CHAT chat %lu %u%c\n",
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), 1);
+ } else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
+ if ((so = tcp_listen(slirp, INADDR_ANY, 0,
+ htonl(laddr), htons(lport),
+ SS_FACCEPTONCE)) == NULL) {
+ return 1;
+ }
+ m->m_len = bptr - m->m_data; /* Adjust length */
+ m->m_len += snprintf(bptr, m->m_size,
+ "DCC SEND %s %lu %u %u%c\n", buff,
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), n1, 1);
+ } else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
+ if ((so = tcp_listen(slirp, INADDR_ANY, 0,
+ htonl(laddr), htons(lport),
+ SS_FACCEPTONCE)) == NULL) {
+ return 1;
+ }
+ m->m_len = bptr - m->m_data; /* Adjust length */
+ m->m_len += snprintf(bptr, m->m_size,
+ "DCC MOVE %s %lu %u %u%c\n", buff,
+ (unsigned long)ntohl(so->so_faddr.s_addr),
+ ntohs(so->so_fport), n1, 1);
+ }
+ return 1;
+
+ case EMU_REALAUDIO:
+ /*
+ * RealAudio emulation - JP. We must try to parse the incoming
+ * data and try to find the two characters that contain the
+ * port number. Then we redirect an udp port and replace the
+ * number with the real port we got.
+ *
+ * The 1.0 beta versions of the player are not supported
+ * any more.
+ *
+ * A typical packet for player version 1.0 (release version):
+ *
+ * 0000:50 4E 41 00 05
+ * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 ........g.l.c..P
+ * 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH
+ * 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v
+ * 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB
+ *
+ * Now the port number 0x1BD7 is found at offset 0x04 of the
+ * Now the port number 0x1BD7 is found at offset 0x04 of the
+ * second packet. This time we received five bytes first and
+ * then the rest. You never know how many bytes you get.
+ *
+ * A typical packet for player version 2.0 (beta):
+ *
+ * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA.............
+ * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .gux.c..Win2.0.0
+ * 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/
+ * 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas
+ * 0040:65 2E 72 61 79 53 00 00 06 36 42 e.rayS...6B
+ *
+ * Port number 0x1BC1 is found at offset 0x0d.
+ *
+ * This is just a horrible switch statement. Variable ra tells
+ * us where we're going.
+ */
+
+ bptr = m->m_data;
+ while (bptr < m->m_data + m->m_len) {
+ uint16_t p;
+ static int ra = 0;
+ char ra_tbl[4];
+
+ ra_tbl[0] = 0x50;
+ ra_tbl[1] = 0x4e;
+ ra_tbl[2] = 0x41;
+ ra_tbl[3] = 0;
+
+ switch (ra) {
+ case 0:
+ case 2:
+ case 3:
+ if (*bptr++ != ra_tbl[ra]) {
+ ra = 0;
+ continue;
+ }
+ break;
+
+ case 1:
+ /*
+ * We may get 0x50 several times, ignore them
+ */
+ if (*bptr == 0x50) {
+ ra = 1;
+ bptr++;
+ continue;
+ } else if (*bptr++ != ra_tbl[ra]) {
+ ra = 0;
+ continue;
+ }
+ break;
+
+ case 4:
+ /*
+ * skip version number
+ */
+ bptr++;
+ break;
+
+ case 5:
+ /*
+ * The difference between versions 1.0 and
+ * 2.0 is here. For future versions of
+ * the player this may need to be modified.
+ */
+ if (*(bptr + 1) == 0x02)
+ bptr += 8;
+ else
+ bptr += 4;
+ break;
+
+ case 6:
+ /* This is the field containing the port
+ * number that RA-player is listening to.
+ */
+ lport = (((uint8_t*)bptr)[0] << 8)
+ + ((uint8_t *)bptr)[1];
+ if (lport < 6970)
+ lport += 256; /* don't know why */
+ if (lport < 6970 || lport > 7170)
+ return 1; /* failed */
+
+ /* try to get udp port between 6970 - 7170 */
+ for (p = 6970; p < 7071; p++) {
+ if (udp_listen(slirp, INADDR_ANY,
+ htons(p),
+ so->so_laddr.s_addr,
+ htons(lport),
+ SS_FACCEPTONCE)) {
+ break;
+ }
+ }
+ if (p == 7071)
+ p = 0;
+ *(uint8_t *)bptr++ = (p >> 8) & 0xff;
+ *(uint8_t *)bptr = p & 0xff;
+ ra = 0;
+ return 1; /* port redirected, we're done */
+ break;
+
+ default:
+ ra = 0;
+ }
+ ra++;
+ }
+ return 1;
+
+ default:
+ /* Ooops, not emulated, won't call tcp_emu again */
+ so->so_emu = 0;
+ return 1;
+ }
+}
+
+/*
+ * Do misc. config of SLiRP while its running.
+ * Return 0 if this connections is to be closed, 1 otherwise,
+ * return 2 if this is a command-line connection
+ */
+int tcp_ctl(struct socket *so)
+{
+ Slirp *slirp = so->slirp;
+ struct sbuf *sb = &so->so_snd;
+ struct gfwd_list *ex_ptr;
+
+ DEBUG_CALL("tcp_ctl");
+ DEBUG_ARG("so = %p", so);
+
+ /* TODO: IPv6 */
+ if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr) {
+ /* Check if it's pty_exec */
+ for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
+ if (ex_ptr->ex_fport == so->so_fport &&
+ so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) {
+ if (ex_ptr->write_cb) {
+ so->s = -1;
+ so->guestfwd = ex_ptr;
+ return 1;
+ }
+ DEBUG_MISC(" executing %s", ex_ptr->ex_exec);
+ return fork_exec(so, ex_ptr->ex_exec);
+ }
+ }
+ }
+ sb->sb_cc =
+ snprintf(sb->sb_wptr, sb->sb_datalen - (sb->sb_wptr - sb->sb_data),
+ "Error: No application configured.\r\n");
+ sb->sb_wptr += sb->sb_cc;
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_timer.c 8.1 (Berkeley) 6/10/93
+ * tcp_timer.c,v 1.2 1994/08/02 07:49:10 davidg Exp
+ */
+
+#include "slirp.h"
+
+static struct tcpcb *tcp_timers(register struct tcpcb *tp, int timer);
+
+/*
+ * Fast timeout routine for processing delayed acks
+ */
+void
+tcp_fasttimo(Slirp *slirp)
+{
+ register struct socket *so;
+ register struct tcpcb *tp;
+
+ DEBUG_CALL("tcp_fasttimo");
+
+ so = slirp->tcb.so_next;
+ if (so)
+ for (; so != &slirp->tcb; so = so->so_next)
+ if ((tp = (struct tcpcb *)so->so_tcpcb) &&
+ (tp->t_flags & TF_DELACK)) {
+ tp->t_flags &= ~TF_DELACK;
+ tp->t_flags |= TF_ACKNOW;
+ (void) tcp_output(tp);
+ }
+}
+
+/*
+ * Tcp protocol timeout routine called every 500 ms.
+ * Updates the timers in all active tcb's and
+ * causes finite state machine actions if timers expire.
+ */
+void
+tcp_slowtimo(Slirp *slirp)
+{
+ register struct socket *ip, *ipnxt;
+ register struct tcpcb *tp;
+ register int i;
+
+ DEBUG_CALL("tcp_slowtimo");
+
+ /*
+ * Search through tcb's and update active timers.
+ */
+ ip = slirp->tcb.so_next;
+ if (ip == NULL) {
+ return;
+ }
+ for (; ip != &slirp->tcb; ip = ipnxt) {
+ ipnxt = ip->so_next;
+ tp = sototcpcb(ip);
+ if (tp == NULL) {
+ continue;
+ }
+ for (i = 0; i < TCPT_NTIMERS; i++) {
+ if (tp->t_timer[i] && --tp->t_timer[i] == 0) {
+ tcp_timers(tp,i);
+ if (ipnxt->so_prev != ip)
+ goto tpgone;
+ }
+ }
+ tp->t_idle++;
+ if (tp->t_rtt)
+ tp->t_rtt++;
+tpgone:
+ ;
+ }
+ slirp->tcp_iss += TCP_ISSINCR/PR_SLOWHZ; /* increment iss */
+ slirp->tcp_now++; /* for timestamps */
+}
+
+/*
+ * Cancel all timers for TCP tp.
+ */
+void
+tcp_canceltimers(struct tcpcb *tp)
+{
+ register int i;
+
+ for (i = 0; i < TCPT_NTIMERS; i++)
+ tp->t_timer[i] = 0;
+}
+
+const int tcp_backoff[TCP_MAXRXTSHIFT + 1] =
+ { 1, 2, 4, 8, 16, 32, 64, 64, 64, 64, 64, 64, 64 };
+
+/*
+ * TCP timer processing.
+ */
+static struct tcpcb *
+tcp_timers(register struct tcpcb *tp, int timer)
+{
+ register int rexmt;
+
+ DEBUG_CALL("tcp_timers");
+
+ switch (timer) {
+
+ /*
+ * 2 MSL timeout in shutdown went off. If we're closed but
+ * still waiting for peer to close and connection has been idle
+ * too long, or if 2MSL time is up from TIME_WAIT, delete connection
+ * control block. Otherwise, check again in a bit.
+ */
+ case TCPT_2MSL:
+ if (tp->t_state != TCPS_TIME_WAIT &&
+ tp->t_idle <= TCP_MAXIDLE)
+ tp->t_timer[TCPT_2MSL] = TCPTV_KEEPINTVL;
+ else
+ tp = tcp_close(tp);
+ break;
+
+ /*
+ * Retransmission timer went off. Message has not
+ * been acked within retransmit interval. Back off
+ * to a longer retransmit interval and retransmit one segment.
+ */
+ case TCPT_REXMT:
+
+ /*
+ * XXXXX If a packet has timed out, then remove all the queued
+ * packets for that session.
+ */
+
+ if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) {
+ /*
+ * This is a hack to suit our terminal server here at the uni of canberra
+ * since they have trouble with zeroes... It usually lets them through
+ * unharmed, but under some conditions, it'll eat the zeros. If we
+ * keep retransmitting it, it'll keep eating the zeroes, so we keep
+ * retransmitting, and eventually the connection dies...
+ * (this only happens on incoming data)
+ *
+ * So, if we were gonna drop the connection from too many retransmits,
+ * don't... instead halve the t_maxseg, which might break up the NULLs and
+ * let them through
+ *
+ * *sigh*
+ */
+
+ tp->t_maxseg >>= 1;
+ if (tp->t_maxseg < 32) {
+ /*
+ * We tried our best, now the connection must die!
+ */
+ tp->t_rxtshift = TCP_MAXRXTSHIFT;
+ tp = tcp_drop(tp, tp->t_softerror);
+ /* tp->t_softerror : ETIMEDOUT); */ /* XXX */
+ return (tp); /* XXX */
+ }
+
+ /*
+ * Set rxtshift to 6, which is still at the maximum
+ * backoff time
+ */
+ tp->t_rxtshift = 6;
+ }
+ rexmt = TCP_REXMTVAL(tp) * tcp_backoff[tp->t_rxtshift];
+ TCPT_RANGESET(tp->t_rxtcur, rexmt,
+ (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */
+ tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
+ /*
+ * If losing, let the lower level know and try for
+ * a better route. Also, if we backed off this far,
+ * our srtt estimate is probably bogus. Clobber it
+ * so we'll take the next rtt measurement as our srtt;
+ * move the current srtt into rttvar to keep the current
+ * retransmit times until then.
+ */
+ if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) {
+ tp->t_rttvar += (tp->t_srtt >> TCP_RTT_SHIFT);
+ tp->t_srtt = 0;
+ }
+ tp->snd_nxt = tp->snd_una;
+ /*
+ * If timing a segment in this window, stop the timer.
+ */
+ tp->t_rtt = 0;
+ /*
+ * Close the congestion window down to one segment
+ * (we'll open it by one segment for each ack we get).
+ * Since we probably have a window's worth of unacked
+ * data accumulated, this "slow start" keeps us from
+ * dumping all that data as back-to-back packets (which
+ * might overwhelm an intermediate gateway).
+ *
+ * There are two phases to the opening: Initially we
+ * open by one mss on each ack. This makes the window
+ * size increase exponentially with time. If the
+ * window is larger than the path can handle, this
+ * exponential growth results in dropped packet(s)
+ * almost immediately. To get more time between
+ * drops but still "push" the network to take advantage
+ * of improving conditions, we switch from exponential
+ * to linear window opening at some threshold size.
+ * For a threshold, we use half the current window
+ * size, truncated to a multiple of the mss.
+ *
+ * (the minimum cwnd that will give us exponential
+ * growth is 2 mss. We don't allow the threshold
+ * to go below this.)
+ */
+ {
+ unsigned win = MIN(tp->snd_wnd, tp->snd_cwnd) / 2 / tp->t_maxseg;
+ if (win < 2)
+ win = 2;
+ tp->snd_cwnd = tp->t_maxseg;
+ tp->snd_ssthresh = win * tp->t_maxseg;
+ tp->t_dupacks = 0;
+ }
+ (void) tcp_output(tp);
+ break;
+
+ /*
+ * Persistence timer into zero window.
+ * Force a byte to be output, if possible.
+ */
+ case TCPT_PERSIST:
+ tcp_setpersist(tp);
+ tp->t_force = 1;
+ (void) tcp_output(tp);
+ tp->t_force = 0;
+ break;
+
+ /*
+ * Keep-alive timer went off; send something
+ * or drop connection if idle for too long.
+ */
+ case TCPT_KEEP:
+ if (tp->t_state < TCPS_ESTABLISHED)
+ goto dropit;
+
+ if (slirp_do_keepalive && tp->t_state <= TCPS_CLOSE_WAIT) {
+ if (tp->t_idle >= TCPTV_KEEP_IDLE + TCP_MAXIDLE)
+ goto dropit;
+ /*
+ * Send a packet designed to force a response
+ * if the peer is up and reachable:
+ * either an ACK if the connection is still alive,
+ * or an RST if the peer has closed the connection
+ * due to timeout or reboot.
+ * Using sequence number tp->snd_una-1
+ * causes the transmitted zero-length segment
+ * to lie outside the receive window;
+ * by the protocol spec, this requires the
+ * correspondent TCP to respond.
+ */
+ tcp_respond(tp, &tp->t_template, (struct mbuf *)NULL,
+ tp->rcv_nxt, tp->snd_una - 1, 0,
+ tp->t_socket->so_ffamily);
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL;
+ } else
+ tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE;
+ break;
+
+ dropit:
+ tp = tcp_drop(tp, 0);
+ break;
+ }
+
+ return (tp);
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93
+ * tcp_timer.h,v 1.4 1994/08/21 05:27:38 paul Exp
+ */
+
+#ifndef TCP_TIMER_H
+#define TCP_TIMER_H
+
+/*
+ * Definitions of the TCP timers. These timers are counted
+ * down PR_SLOWHZ times a second.
+ */
+#define TCPT_NTIMERS 4
+
+#define TCPT_REXMT 0 /* retransmit */
+#define TCPT_PERSIST 1 /* retransmit persistence */
+#define TCPT_KEEP 2 /* keep alive */
+#define TCPT_2MSL 3 /* 2*msl quiet time timer */
+
+/*
+ * The TCPT_REXMT timer is used to force retransmissions.
+ * The TCP has the TCPT_REXMT timer set whenever segments
+ * have been sent for which ACKs are expected but not yet
+ * received. If an ACK is received which advances tp->snd_una,
+ * then the retransmit timer is cleared (if there are no more
+ * outstanding segments) or reset to the base value (if there
+ * are more ACKs expected). Whenever the retransmit timer goes off,
+ * we retransmit one unacknowledged segment, and do a backoff
+ * on the retransmit timer.
+ *
+ * The TCPT_PERSIST timer is used to keep window size information
+ * flowing even if the window goes shut. If all previous transmissions
+ * have been acknowledged (so that there are no retransmissions in progress),
+ * and the window is too small to bother sending anything, then we start
+ * the TCPT_PERSIST timer. When it expires, if the window is nonzero,
+ * we go to transmit state. Otherwise, at intervals send a single byte
+ * into the peer's window to force him to update our window information.
+ * We do this at most as often as TCPT_PERSMIN time intervals,
+ * but no more frequently than the current estimate of round-trip
+ * packet time. The TCPT_PERSIST timer is cleared whenever we receive
+ * a window update from the peer.
+ *
+ * The TCPT_KEEP timer is used to keep connections alive. If an
+ * connection is idle (no segments received) for TCPTV_KEEP_INIT amount of time,
+ * but not yet established, then we drop the connection. Once the connection
+ * is established, if the connection is idle for TCPTV_KEEP_IDLE time
+ * (and keepalives have been enabled on the socket), we begin to probe
+ * the connection. We force the peer to send us a segment by sending:
+ * <SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK>
+ * This segment is (deliberately) outside the window, and should elicit
+ * an ack segment in response from the peer. If, despite the TCPT_KEEP
+ * initiated segments we cannot elicit a response from a peer in TCPT_MAXIDLE
+ * amount of time probing, then we drop the connection.
+ */
+
+/*
+ * Time constants.
+ */
+#define TCPTV_MSL ( 5*PR_SLOWHZ) /* max seg lifetime (hah!) */
+
+#define TCPTV_SRTTBASE 0 /* base roundtrip time;
+ if 0, no idea yet */
+#define TCPTV_SRTTDFLT ( 3*PR_SLOWHZ) /* assumed RTT if no info */
+
+#define TCPTV_PERSMIN ( 5*PR_SLOWHZ) /* retransmit persistence */
+#define TCPTV_PERSMAX ( 60*PR_SLOWHZ) /* maximum persist interval */
+
+#define TCPTV_KEEP_INIT ( 75*PR_SLOWHZ) /* initial connect keep alive */
+#define TCPTV_KEEP_IDLE (120*60*PR_SLOWHZ) /* dflt time before probing */
+#define TCPTV_KEEPINTVL ( 75*PR_SLOWHZ) /* default probe interval */
+#define TCPTV_KEEPCNT 8 /* max probes before drop */
+
+#define TCPTV_MIN ( 1*PR_SLOWHZ) /* minimum allowable value */
+#define TCPTV_REXMTMAX ( 12*PR_SLOWHZ) /* max allowable REXMT value */
+
+#define TCP_LINGERTIME 120 /* linger at most 2 minutes */
+
+#define TCP_MAXRXTSHIFT 12 /* maximum retransmits */
+
+
+/*
+ * Force a time value to be in a certain range.
+ */
+#define TCPT_RANGESET(tv, value, tvmin, tvmax) { \
+ (tv) = (value); \
+ if ((tv) < (tvmin)) \
+ (tv) = (tvmin); \
+ else if ((tv) > (tvmax)) \
+ (tv) = (tvmax); \
+}
+
+extern const int tcp_backoff[];
+
+struct tcpcb;
+
+void tcp_fasttimo(Slirp *);
+void tcp_slowtimo(Slirp *);
+void tcp_canceltimers(struct tcpcb *);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcp_var.h 8.3 (Berkeley) 4/10/94
+ * tcp_var.h,v 1.3 1994/08/21 05:27:39 paul Exp
+ */
+
+#ifndef TCP_VAR_H
+#define TCP_VAR_H
+
+#include "tcpip.h"
+#include "tcp_timer.h"
+
+/*
+ * Tcp control block, one per tcp; fields:
+ */
+struct tcpcb {
+ struct tcpiphdr *seg_next; /* sequencing queue */
+ struct tcpiphdr *seg_prev;
+ short t_state; /* state of this connection */
+ short t_timer[TCPT_NTIMERS]; /* tcp timers */
+ short t_rxtshift; /* log(2) of rexmt exp. backoff */
+ short t_rxtcur; /* current retransmit value */
+ short t_dupacks; /* consecutive dup acks recd */
+ uint16_t t_maxseg; /* maximum segment size */
+ uint8_t t_force; /* 1 if forcing out a byte */
+ uint16_t t_flags;
+#define TF_ACKNOW 0x0001 /* ack peer immediately */
+#define TF_DELACK 0x0002 /* ack, but try to delay it */
+#define TF_NODELAY 0x0004 /* don't delay packets to coalesce */
+#define TF_NOOPT 0x0008 /* don't use tcp options */
+#define TF_SENTFIN 0x0010 /* have sent FIN */
+#define TF_REQ_SCALE 0x0020 /* have/will request window scaling */
+#define TF_RCVD_SCALE 0x0040 /* other side has requested scaling */
+#define TF_REQ_TSTMP 0x0080 /* have/will request timestamps */
+#define TF_RCVD_TSTMP 0x0100 /* a timestamp was received in SYN */
+#define TF_SACK_PERMIT 0x0200 /* other side said I could SACK */
+
+ struct tcpiphdr t_template; /* static skeletal packet for xmit */
+
+ struct socket *t_socket; /* back pointer to socket */
+/*
+ * The following fields are used as in the protocol specification.
+ * See RFC783, Dec. 1981, page 21.
+ */
+/* send sequence variables */
+ tcp_seq snd_una; /* send unacknowledged */
+ tcp_seq snd_nxt; /* send next */
+ tcp_seq snd_up; /* send urgent pointer */
+ tcp_seq snd_wl1; /* window update seg seq number */
+ tcp_seq snd_wl2; /* window update seg ack number */
+ tcp_seq iss; /* initial send sequence number */
+ uint32_t snd_wnd; /* send window */
+/* receive sequence variables */
+ uint32_t rcv_wnd; /* receive window */
+ tcp_seq rcv_nxt; /* receive next */
+ tcp_seq rcv_up; /* receive urgent pointer */
+ tcp_seq irs; /* initial receive sequence number */
+/*
+ * Additional variables for this implementation.
+ */
+/* receive variables */
+ tcp_seq rcv_adv; /* advertised window */
+/* retransmit variables */
+ tcp_seq snd_max; /* highest sequence number sent;
+ * used to recognize retransmits
+ */
+/* congestion control (for slow start, source quench, retransmit after loss) */
+ uint32_t snd_cwnd; /* congestion-controlled window */
+ uint32_t snd_ssthresh; /* snd_cwnd size threshold for
+ * for slow start exponential to
+ * linear switch
+ */
+/*
+ * transmit timing stuff. See below for scale of srtt and rttvar.
+ * "Variance" is actually smoothed difference.
+ */
+ short t_idle; /* inactivity time */
+ short t_rtt; /* round trip time */
+ tcp_seq t_rtseq; /* sequence number being timed */
+ short t_srtt; /* smoothed round-trip time */
+ short t_rttvar; /* variance in round-trip time */
+ uint16_t t_rttmin; /* minimum rtt allowed */
+ uint32_t max_sndwnd; /* largest window peer has offered */
+
+/* out-of-band data */
+ uint8_t t_oobflags; /* have some */
+ uint8_t t_iobc; /* input character */
+#define TCPOOB_HAVEDATA 0x01
+#define TCPOOB_HADDATA 0x02
+ short t_softerror; /* possible error not yet reported */
+
+/* RFC 1323 variables */
+ uint8_t snd_scale; /* window scaling for send window */
+ uint8_t rcv_scale; /* window scaling for recv window */
+ uint8_t request_r_scale; /* pending window scaling */
+ uint8_t requested_s_scale;
+ uint32_t ts_recent; /* timestamp echo data */
+ uint32_t ts_recent_age; /* when last updated */
+ tcp_seq last_ack_sent;
+
+};
+
+#define sototcpcb(so) ((so)->so_tcpcb)
+
+/*
+ * The smoothed round-trip time and estimated variance
+ * are stored as fixed point numbers scaled by the values below.
+ * For convenience, these scales are also used in smoothing the average
+ * (smoothed = (1/scale)sample + ((scale-1)/scale)smoothed).
+ * With these scales, srtt has 3 bits to the right of the binary point,
+ * and thus an "ALPHA" of 0.875. rttvar has 2 bits to the right of the
+ * binary point, and is smoothed with an ALPHA of 0.75.
+ */
+#define TCP_RTT_SCALE 8 /* multiplier for srtt; 3 bits frac. */
+#define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */
+#define TCP_RTTVAR_SCALE 4 /* multiplier for rttvar; 2 bits */
+#define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */
+
+/*
+ * The initial retransmission should happen at rtt + 4 * rttvar.
+ * Because of the way we do the smoothing, srtt and rttvar
+ * will each average +1/2 tick of bias. When we compute
+ * the retransmit timer, we want 1/2 tick of rounding and
+ * 1 extra tick because of +-1/2 tick uncertainty in the
+ * firing of the timer. The bias will give us exactly the
+ * 1.5 tick we need. But, because the bias is
+ * statistical, we have to test that we don't drop below
+ * the minimum feasible timer (which is 2 ticks).
+ * This macro assumes that the value of TCP_RTTVAR_SCALE
+ * is the same as the multiplier for rttvar.
+ */
+#define TCP_REXMTVAL(tp) \
+ (((tp)->t_srtt >> TCP_RTT_SHIFT) + (tp)->t_rttvar)
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tcpip.h 8.1 (Berkeley) 6/10/93
+ * tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp
+ */
+
+#ifndef TCPIP_H
+#define TCPIP_H
+
+/*
+ * Tcp+ip header, after ip options removed.
+ */
+struct tcpiphdr {
+ struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
+ union {
+ struct {
+ struct in_addr ih_src; /* source internet address */
+ struct in_addr ih_dst; /* destination internet address */
+ uint8_t ih_x1; /* (unused) */
+ uint8_t ih_pr; /* protocol */
+ } ti_i4;
+ struct {
+ struct in6_addr ih_src;
+ struct in6_addr ih_dst;
+ uint8_t ih_x1;
+ uint8_t ih_nh;
+ } ti_i6;
+ } ti;
+ uint16_t ti_x0;
+ uint16_t ti_len; /* protocol length */
+ struct tcphdr ti_t; /* tcp header */
+};
+#define ti_mbuf ih_mbuf.mptr
+#define ti_pr ti.ti_i4.ih_pr
+#define ti_src ti.ti_i4.ih_src
+#define ti_dst ti.ti_i4.ih_dst
+#define ti_src6 ti.ti_i6.ih_src
+#define ti_dst6 ti.ti_i6.ih_dst
+#define ti_nh6 ti.ti_i6.ih_nh
+#define ti_sport ti_t.th_sport
+#define ti_dport ti_t.th_dport
+#define ti_seq ti_t.th_seq
+#define ti_ack ti_t.th_ack
+#define ti_x2 ti_t.th_x2
+#define ti_off ti_t.th_off
+#define ti_flags ti_t.th_flags
+#define ti_win ti_t.th_win
+#define ti_sum ti_t.th_sum
+#define ti_urp ti_t.th_urp
+
+#define tcpiphdr2qlink(T) ((struct qlink*)(((char*)(T)) - sizeof(struct qlink)))
+#define qlink2tcpiphdr(Q) ((struct tcpiphdr*)(((char*)(Q)) + sizeof(struct qlink)))
+#define tcpiphdr_next(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->next)
+#define tcpiphdr_prev(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->prev)
+#define tcpfrag_list_first(T) qlink2tcpiphdr((T)->seg_next)
+#define tcpfrag_list_end(F, T) (tcpiphdr2qlink(F) == (struct qlink*)(T))
+#define tcpfrag_list_empty(T) ((T)->seg_next == (struct tcpiphdr*)(T))
+
+/* This is the difference between the size of a tcpiphdr structure, and the
+ * size of actual ip+tcp headers, rounded up since we need to align data. */
+#define TCPIPHDR_DELTA\
+ (MAX(0,\
+ (sizeof(struct tcpiphdr)\
+ - sizeof(struct ip) - sizeof(struct tcphdr) + 3) & ~3))
+
+/*
+ * Just a clean way to get to the first byte
+ * of the packet
+ */
+struct tcpiphdr_2 {
+ struct tcpiphdr dummy;
+ char first_char;
+};
+
+#endif
--- /dev/null
+/*
+ * tftp.c - a simple, read-only tftp server for qemu
+ *
+ * Copyright (c) 2004 Magnus Damm <damm@opensource.se>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "slirp.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+static inline int tftp_session_in_use(struct tftp_session *spt)
+{
+ return (spt->slirp != NULL);
+}
+
+static inline void tftp_session_update(struct tftp_session *spt)
+{
+ spt->timestamp = curtime;
+}
+
+static void tftp_session_terminate(struct tftp_session *spt)
+{
+ if (spt->fd >= 0) {
+ close(spt->fd);
+ spt->fd = -1;
+ }
+ g_free(spt->filename);
+ spt->slirp = NULL;
+}
+
+static int tftp_session_allocate(Slirp *slirp, struct sockaddr_storage *srcsas,
+ struct tftp_t *tp)
+{
+ struct tftp_session *spt;
+ int k;
+
+ for (k = 0; k < TFTP_SESSIONS_MAX; k++) {
+ spt = &slirp->tftp_sessions[k];
+
+ if (!tftp_session_in_use(spt))
+ goto found;
+
+ /* sessions time out after 5 inactive seconds */
+ if ((int)(curtime - spt->timestamp) > 5000) {
+ tftp_session_terminate(spt);
+ goto found;
+ }
+ }
+
+ return -1;
+
+ found:
+ memset(spt, 0, sizeof(*spt));
+ memcpy(&spt->client_addr, srcsas, sockaddr_size(srcsas));
+ spt->fd = -1;
+ spt->block_size = 512;
+ spt->client_port = tp->udp.uh_sport;
+ spt->slirp = slirp;
+
+ tftp_session_update(spt);
+
+ return k;
+}
+
+static int tftp_session_find(Slirp *slirp, struct sockaddr_storage *srcsas,
+ struct tftp_t *tp)
+{
+ struct tftp_session *spt;
+ int k;
+
+ for (k = 0; k < TFTP_SESSIONS_MAX; k++) {
+ spt = &slirp->tftp_sessions[k];
+
+ if (tftp_session_in_use(spt)) {
+ if (sockaddr_equal(&spt->client_addr, srcsas)) {
+ if (spt->client_port == tp->udp.uh_sport) {
+ return k;
+ }
+ }
+ }
+ }
+
+ return -1;
+}
+
+static int tftp_read_data(struct tftp_session *spt, uint32_t block_nr,
+ uint8_t *buf, int len)
+{
+ int bytes_read = 0;
+
+ if (spt->fd < 0) {
+ spt->fd = open(spt->filename, O_RDONLY | O_BINARY);
+ }
+
+ if (spt->fd < 0) {
+ return -1;
+ }
+
+ if (len) {
+ lseek(spt->fd, block_nr * spt->block_size, SEEK_SET);
+
+ bytes_read = read(spt->fd, buf, len);
+ }
+
+ return bytes_read;
+}
+
+static struct tftp_t *tftp_prep_mbuf_data(struct tftp_session *spt,
+ struct mbuf *m)
+{
+ struct tftp_t *tp;
+
+ memset(m->m_data, 0, m->m_size);
+
+ m->m_data += IF_MAXLINKHDR;
+ if (spt->client_addr.ss_family == AF_INET6) {
+ m->m_data += sizeof(struct ip6);
+ } else {
+ m->m_data += sizeof(struct ip);
+ }
+ tp = (void *)m->m_data;
+ m->m_data += sizeof(struct udphdr);
+
+ return tp;
+}
+
+static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m,
+ struct tftp_t *recv_tp)
+{
+ if (spt->client_addr.ss_family == AF_INET6) {
+ struct sockaddr_in6 sa6, da6;
+
+ sa6.sin6_addr = spt->slirp->vhost_addr6;
+ sa6.sin6_port = recv_tp->udp.uh_dport;
+ da6.sin6_addr = ((struct sockaddr_in6 *)&spt->client_addr)->sin6_addr;
+ da6.sin6_port = spt->client_port;
+
+ udp6_output(NULL, m, &sa6, &da6);
+ } else {
+ struct sockaddr_in sa4, da4;
+
+ sa4.sin_addr = spt->slirp->vhost_addr;
+ sa4.sin_port = recv_tp->udp.uh_dport;
+ da4.sin_addr = ((struct sockaddr_in *)&spt->client_addr)->sin_addr;
+ da4.sin_port = spt->client_port;
+
+ udp_output(NULL, m, &sa4, &da4, IPTOS_LOWDELAY);
+ }
+}
+
+static int tftp_send_oack(struct tftp_session *spt,
+ const char *keys[], uint32_t values[], int nb,
+ struct tftp_t *recv_tp)
+{
+ struct mbuf *m;
+ struct tftp_t *tp;
+ int i, n = 0;
+
+ m = m_get(spt->slirp);
+
+ if (!m)
+ return -1;
+
+ tp = tftp_prep_mbuf_data(spt, m);
+
+ tp->tp_op = htons(TFTP_OACK);
+ for (i = 0; i < nb; i++) {
+ n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",
+ keys[i]) + 1;
+ n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u",
+ values[i]) + 1;
+ }
+
+ m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + n
+ - sizeof(struct udphdr);
+ tftp_udp_output(spt, m, recv_tp);
+
+ return 0;
+}
+
+static void tftp_send_error(struct tftp_session *spt,
+ uint16_t errorcode, const char *msg,
+ struct tftp_t *recv_tp)
+{
+ struct mbuf *m;
+ struct tftp_t *tp;
+
+ DEBUG_TFTP("tftp error msg: %s", msg);
+
+ m = m_get(spt->slirp);
+
+ if (!m) {
+ goto out;
+ }
+
+ tp = tftp_prep_mbuf_data(spt, m);
+
+ tp->tp_op = htons(TFTP_ERROR);
+ tp->x.tp_error.tp_error_code = htons(errorcode);
+ slirp_pstrcpy((char *)tp->x.tp_error.tp_msg, sizeof(tp->x.tp_error.tp_msg), msg);
+
+ m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + 3 + strlen(msg)
+ - sizeof(struct udphdr);
+ tftp_udp_output(spt, m, recv_tp);
+
+out:
+ tftp_session_terminate(spt);
+}
+
+static void tftp_send_next_block(struct tftp_session *spt,
+ struct tftp_t *recv_tp)
+{
+ struct mbuf *m;
+ struct tftp_t *tp;
+ int nobytes;
+
+ m = m_get(spt->slirp);
+
+ if (!m) {
+ return;
+ }
+
+ tp = tftp_prep_mbuf_data(spt, m);
+
+ tp->tp_op = htons(TFTP_DATA);
+ tp->x.tp_data.tp_block_nr = htons((spt->block_nr + 1) & 0xffff);
+
+ nobytes = tftp_read_data(spt, spt->block_nr, tp->x.tp_data.tp_buf,
+ spt->block_size);
+
+ if (nobytes < 0) {
+ m_free(m);
+
+ /* send "file not found" error back */
+
+ tftp_send_error(spt, 1, "File not found", tp);
+
+ return;
+ }
+
+ m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX - nobytes)
+ - sizeof(struct udphdr);
+ tftp_udp_output(spt, m, recv_tp);
+
+ if (nobytes == spt->block_size) {
+ tftp_session_update(spt);
+ }
+ else {
+ tftp_session_terminate(spt);
+ }
+
+ spt->block_nr++;
+}
+
+static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas,
+ struct tftp_t *tp, int pktlen)
+{
+ struct tftp_session *spt;
+ int s, k;
+ size_t prefix_len;
+ char *req_fname;
+ const char *option_name[2];
+ uint32_t option_value[2];
+ int nb_options = 0;
+
+ /* check if a session already exists and if so terminate it */
+ s = tftp_session_find(slirp, srcsas, tp);
+ if (s >= 0) {
+ tftp_session_terminate(&slirp->tftp_sessions[s]);
+ }
+
+ s = tftp_session_allocate(slirp, srcsas, tp);
+
+ if (s < 0) {
+ return;
+ }
+
+ spt = &slirp->tftp_sessions[s];
+
+ /* unspecified prefix means service disabled */
+ if (!slirp->tftp_prefix) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+
+ /* skip header fields */
+ k = 0;
+ pktlen -= offsetof(struct tftp_t, x.tp_buf);
+
+ /* prepend tftp_prefix */
+ prefix_len = strlen(slirp->tftp_prefix);
+ spt->filename = g_malloc(prefix_len + TFTP_FILENAME_MAX + 2);
+ memcpy(spt->filename, slirp->tftp_prefix, prefix_len);
+ spt->filename[prefix_len] = '/';
+
+ /* get name */
+ req_fname = spt->filename + prefix_len + 1;
+
+ while (1) {
+ if (k >= TFTP_FILENAME_MAX || k >= pktlen) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+ req_fname[k] = tp->x.tp_buf[k];
+ if (req_fname[k++] == '\0') {
+ break;
+ }
+ }
+
+ DEBUG_TFTP("tftp rrq file: %s", req_fname);
+
+ /* check mode */
+ if ((pktlen - k) < 6) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+
+ if (strcasecmp(&tp->x.tp_buf[k], "octet") != 0) {
+ tftp_send_error(spt, 4, "Unsupported transfer mode", tp);
+ return;
+ }
+
+ k += 6; /* skipping octet */
+
+ /* do sanity checks on the filename */
+ if (!strncmp(req_fname, "../", 3) ||
+ req_fname[strlen(req_fname) - 1] == '/' ||
+ strstr(req_fname, "/../")) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+
+ /* check if the file exists */
+ if (tftp_read_data(spt, 0, NULL, 0) < 0) {
+ tftp_send_error(spt, 1, "File not found", tp);
+ return;
+ }
+
+ if (tp->x.tp_buf[pktlen - 1] != 0) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+
+ while (k < pktlen && nb_options < G_N_ELEMENTS(option_name)) {
+ const char *key, *value;
+
+ key = &tp->x.tp_buf[k];
+ k += strlen(key) + 1;
+
+ if (k >= pktlen) {
+ tftp_send_error(spt, 2, "Access violation", tp);
+ return;
+ }
+
+ value = &tp->x.tp_buf[k];
+ k += strlen(value) + 1;
+
+ if (strcasecmp(key, "tsize") == 0) {
+ int tsize = atoi(value);
+ struct stat stat_p;
+
+ if (tsize == 0) {
+ if (stat(spt->filename, &stat_p) == 0)
+ tsize = stat_p.st_size;
+ else {
+ tftp_send_error(spt, 1, "File not found", tp);
+ return;
+ }
+ }
+
+ option_name[nb_options] = "tsize";
+ option_value[nb_options] = tsize;
+ nb_options++;
+ } else if (strcasecmp(key, "blksize") == 0) {
+ int blksize = atoi(value);
+
+ /* Accept blksize up to our maximum size */
+ if (blksize > 0) {
+ spt->block_size = MIN(blksize, TFTP_BLOCKSIZE_MAX);
+ option_name[nb_options] = "blksize";
+ option_value[nb_options] = spt->block_size;
+ nb_options++;
+ }
+ }
+ }
+
+ if (nb_options > 0) {
+ assert(nb_options <= G_N_ELEMENTS(option_name));
+ tftp_send_oack(spt, option_name, option_value, nb_options, tp);
+ return;
+ }
+
+ spt->block_nr = 0;
+ tftp_send_next_block(spt, tp);
+}
+
+static void tftp_handle_ack(Slirp *slirp, struct sockaddr_storage *srcsas,
+ struct tftp_t *tp, int pktlen)
+{
+ int s;
+
+ s = tftp_session_find(slirp, srcsas, tp);
+
+ if (s < 0) {
+ return;
+ }
+
+ tftp_send_next_block(&slirp->tftp_sessions[s], tp);
+}
+
+static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas,
+ struct tftp_t *tp, int pktlen)
+{
+ int s;
+
+ s = tftp_session_find(slirp, srcsas, tp);
+
+ if (s < 0) {
+ return;
+ }
+
+ tftp_session_terminate(&slirp->tftp_sessions[s]);
+}
+
+void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m)
+{
+ struct tftp_t *tp = (struct tftp_t *)m->m_data;
+
+ switch(ntohs(tp->tp_op)) {
+ case TFTP_RRQ:
+ tftp_handle_rrq(m->slirp, srcsas, tp, m->m_len);
+ break;
+
+ case TFTP_ACK:
+ tftp_handle_ack(m->slirp, srcsas, tp, m->m_len);
+ break;
+
+ case TFTP_ERROR:
+ tftp_handle_error(m->slirp, srcsas, tp, m->m_len);
+ break;
+ }
+}
--- /dev/null
+/* tftp defines */
+
+#ifndef SLIRP_TFTP_H
+#define SLIRP_TFTP_H
+
+#define TFTP_SESSIONS_MAX 20
+
+#define TFTP_SERVER 69
+
+#define TFTP_RRQ 1
+#define TFTP_WRQ 2
+#define TFTP_DATA 3
+#define TFTP_ACK 4
+#define TFTP_ERROR 5
+#define TFTP_OACK 6
+
+#define TFTP_FILENAME_MAX 512
+#define TFTP_BLOCKSIZE_MAX 1428
+
+struct tftp_t {
+ struct udphdr udp;
+ uint16_t tp_op;
+ union {
+ struct {
+ uint16_t tp_block_nr;
+ uint8_t tp_buf[TFTP_BLOCKSIZE_MAX];
+ } tp_data;
+ struct {
+ uint16_t tp_error_code;
+ uint8_t tp_msg[TFTP_BLOCKSIZE_MAX];
+ } tp_error;
+ char tp_buf[TFTP_BLOCKSIZE_MAX + 2];
+ } x;
+} __attribute__((packed));
+
+struct tftp_session {
+ Slirp *slirp;
+ char *filename;
+ int fd;
+ uint16_t block_size;
+
+ struct sockaddr_storage client_addr;
+ uint16_t client_port;
+ uint32_t block_nr;
+
+ int timestamp;
+};
+
+void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
+ * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
+ */
+
+/*
+ * Changes and additions relating to SLiRP
+ * Copyright (c) 1995 Danny Gasparovski.
+ *
+ * Please read the file COPYRIGHT for the
+ * terms and conditions of the copyright.
+ */
+
+#include "slirp.h"
+#include "ip_icmp.h"
+
+static uint8_t udp_tos(struct socket *so);
+
+void
+udp_init(Slirp *slirp)
+{
+ slirp->udb.so_next = slirp->udb.so_prev = &slirp->udb;
+ slirp->udp_last_so = &slirp->udb;
+}
+
+void udp_cleanup(Slirp *slirp)
+{
+ while (slirp->udb.so_next != &slirp->udb) {
+ udp_detach(slirp->udb.so_next);
+ }
+}
+
+/* m->m_data points at ip packet header
+ * m->m_len length ip packet
+ * ip->ip_len length data (IPDU)
+ */
+void
+udp_input(register struct mbuf *m, int iphlen)
+{
+ Slirp *slirp = m->slirp;
+ register struct ip *ip;
+ register struct udphdr *uh;
+ int len;
+ struct ip save_ip;
+ struct socket *so;
+ struct sockaddr_storage lhost;
+ struct sockaddr_in *lhost4;
+
+ DEBUG_CALL("udp_input");
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("iphlen = %d", iphlen);
+
+ /*
+ * Strip IP options, if any; should skip this,
+ * make available to user, and use on returned packets,
+ * but we don't yet have a way to check the checksum
+ * with options still present.
+ */
+ if(iphlen > sizeof(struct ip)) {
+ ip_stripoptions(m, (struct mbuf *)0);
+ iphlen = sizeof(struct ip);
+ }
+
+ /*
+ * Get IP and UDP header together in first mbuf.
+ */
+ ip = mtod(m, struct ip *);
+ uh = (struct udphdr *)((char *)ip + iphlen);
+
+ /*
+ * Make mbuf data length reflect UDP length.
+ * If not enough data to reflect UDP length, drop.
+ */
+ len = ntohs((uint16_t)uh->uh_ulen);
+
+ if (ip->ip_len != len) {
+ if (len > ip->ip_len) {
+ goto bad;
+ }
+ m_adj(m, len - ip->ip_len);
+ ip->ip_len = len;
+ }
+
+ /*
+ * Save a copy of the IP header in case we want restore it
+ * for sending an ICMP error message in response.
+ */
+ save_ip = *ip;
+ save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
+
+ /*
+ * Checksum extended UDP header and data.
+ */
+ if (uh->uh_sum) {
+ memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr));
+ ((struct ipovly *)ip)->ih_x1 = 0;
+ ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
+ if(cksum(m, len + sizeof(struct ip))) {
+ goto bad;
+ }
+ }
+
+ lhost.ss_family = AF_INET;
+ lhost4 = (struct sockaddr_in *) &lhost;
+ lhost4->sin_addr = ip->ip_src;
+ lhost4->sin_port = uh->uh_sport;
+
+ /*
+ * handle DHCP/BOOTP
+ */
+ if (ntohs(uh->uh_dport) == BOOTP_SERVER &&
+ (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
+ ip->ip_dst.s_addr == 0xffffffff)) {
+ bootp_input(m);
+ goto bad;
+ }
+
+ /*
+ * handle TFTP
+ */
+ if (ntohs(uh->uh_dport) == TFTP_SERVER &&
+ ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) {
+ m->m_data += iphlen;
+ m->m_len -= iphlen;
+ tftp_input(&lhost, m);
+ m->m_data -= iphlen;
+ m->m_len += iphlen;
+ goto bad;
+ }
+
+ if (slirp->restricted) {
+ goto bad;
+ }
+
+ /*
+ * Locate pcb for datagram.
+ */
+ so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL);
+
+ if (so == NULL) {
+ /*
+ * If there's no socket for this packet,
+ * create one
+ */
+ so = socreate(slirp);
+ if (udp_attach(so, AF_INET) == -1) {
+ DEBUG_MISC(" udp_attach errno = %d-%s", errno, strerror(errno));
+ sofree(so);
+ goto bad;
+ }
+
+ /*
+ * Setup fields
+ */
+ so->so_lfamily = AF_INET;
+ so->so_laddr = ip->ip_src;
+ so->so_lport = uh->uh_sport;
+
+ if ((so->so_iptos = udp_tos(so)) == 0)
+ so->so_iptos = ip->ip_tos;
+
+ /*
+ * XXXXX Here, check if it's in udpexec_list,
+ * and if it is, do the fork_exec() etc.
+ */
+ }
+
+ so->so_ffamily = AF_INET;
+ so->so_faddr = ip->ip_dst; /* XXX */
+ so->so_fport = uh->uh_dport; /* XXX */
+
+ iphlen += sizeof(struct udphdr);
+ m->m_len -= iphlen;
+ m->m_data += iphlen;
+
+ /*
+ * Now we sendto() the packet.
+ */
+ if(sosendto(so,m) == -1) {
+ m->m_len += iphlen;
+ m->m_data -= iphlen;
+ *ip=save_ip;
+ DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno));
+ icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0,
+ strerror(errno));
+ goto bad;
+ }
+
+ m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
+
+ /* restore the orig mbuf packet */
+ m->m_len += iphlen;
+ m->m_data -= iphlen;
+ *ip=save_ip;
+ so->so_m=m; /* ICMP backup */
+
+ return;
+bad:
+ m_free(m);
+}
+
+int udp_output(struct socket *so, struct mbuf *m,
+ struct sockaddr_in *saddr, struct sockaddr_in *daddr,
+ int iptos)
+{
+ register struct udpiphdr *ui;
+ int error = 0;
+
+ DEBUG_CALL("udp_output");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+ DEBUG_ARG("saddr = %s", inet_ntoa(saddr->sin_addr));
+ DEBUG_ARG("daddr = %s", inet_ntoa(daddr->sin_addr));
+
+ /*
+ * Adjust for header
+ */
+ m->m_data -= sizeof(struct udpiphdr);
+ m->m_len += sizeof(struct udpiphdr);
+
+ /*
+ * Fill in mbuf with extended UDP header
+ * and addresses and length put into network format.
+ */
+ ui = mtod(m, struct udpiphdr *);
+ memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr));
+ ui->ui_x1 = 0;
+ ui->ui_pr = IPPROTO_UDP;
+ ui->ui_len = htons(m->m_len - sizeof(struct ip));
+ /* XXXXX Check for from-one-location sockets, or from-any-location sockets */
+ ui->ui_src = saddr->sin_addr;
+ ui->ui_dst = daddr->sin_addr;
+ ui->ui_sport = saddr->sin_port;
+ ui->ui_dport = daddr->sin_port;
+ ui->ui_ulen = ui->ui_len;
+
+ /*
+ * Stuff checksum and output datagram.
+ */
+ ui->ui_sum = 0;
+ if ((ui->ui_sum = cksum(m, m->m_len)) == 0)
+ ui->ui_sum = 0xffff;
+ ((struct ip *)ui)->ip_len = m->m_len;
+
+ ((struct ip *)ui)->ip_ttl = IPDEFTTL;
+ ((struct ip *)ui)->ip_tos = iptos;
+
+ error = ip_output(so, m);
+
+ return (error);
+}
+
+int
+udp_attach(struct socket *so, unsigned short af)
+{
+ so->s = slirp_socket(af, SOCK_DGRAM, 0);
+ if (so->s != -1) {
+ so->so_expire = curtime + SO_EXPIRE;
+ insque(so, &so->slirp->udb);
+ }
+ return(so->s);
+}
+
+void
+udp_detach(struct socket *so)
+{
+ so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
+ closesocket(so->s);
+ sofree(so);
+}
+
+static const struct tos_t udptos[] = {
+ {0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
+ {0, 0, 0, 0}
+};
+
+static uint8_t
+udp_tos(struct socket *so)
+{
+ int i = 0;
+
+ while(udptos[i].tos) {
+ if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) ||
+ (udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) {
+ so->so_emu = udptos[i].emu;
+ return udptos[i].tos;
+ }
+ i++;
+ }
+
+ return 0;
+}
+
+struct socket *
+udp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
+ unsigned lport, int flags)
+{
+ /* TODO: IPv6 */
+ struct sockaddr_in addr;
+ struct socket *so;
+ socklen_t addrlen = sizeof(struct sockaddr_in);
+
+ so = socreate(slirp);
+ so->s = slirp_socket(AF_INET,SOCK_DGRAM,0);
+ if (so->s < 0) {
+ sofree(so);
+ return NULL;
+ }
+ so->so_expire = curtime + SO_EXPIRE;
+ insque(so, &slirp->udb);
+
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = haddr;
+ addr.sin_port = hport;
+
+ if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) {
+ udp_detach(so);
+ return NULL;
+ }
+ slirp_socket_set_fast_reuse(so->s);
+
+ getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
+ so->fhost.sin = addr;
+ sotranslate_accept(so);
+ so->so_lfamily = AF_INET;
+ so->so_lport = lport;
+ so->so_laddr.s_addr = laddr;
+ if (flags != SS_FACCEPTONCE)
+ so->so_expire = 0;
+
+ so->so_state &= SS_PERSISTENT_MASK;
+ so->so_state |= SS_ISFCONNECTED | flags;
+
+ return so;
+}
--- /dev/null
+/*
+ * Copyright (c) 1982, 1986, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)udp.h 8.1 (Berkeley) 6/10/93
+ * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
+ */
+
+#ifndef UDP_H
+#define UDP_H
+
+#define UDP_TTL 0x60
+#define UDP_UDPDATALEN 16192
+
+/*
+ * Udp protocol header.
+ * Per RFC 768, September, 1981.
+ */
+struct udphdr {
+ uint16_t uh_sport; /* source port */
+ uint16_t uh_dport; /* destination port */
+ int16_t uh_ulen; /* udp length */
+ uint16_t uh_sum; /* udp checksum */
+};
+
+/*
+ * UDP kernel structures and variables.
+ */
+struct udpiphdr {
+ struct ipovly ui_i; /* overlaid ip structure */
+ struct udphdr ui_u; /* udp header */
+};
+#define ui_mbuf ui_i.ih_mbuf.mptr
+#define ui_x1 ui_i.ih_x1
+#define ui_pr ui_i.ih_pr
+#define ui_len ui_i.ih_len
+#define ui_src ui_i.ih_src
+#define ui_dst ui_i.ih_dst
+#define ui_sport ui_u.uh_sport
+#define ui_dport ui_u.uh_dport
+#define ui_ulen ui_u.uh_ulen
+#define ui_sum ui_u.uh_sum
+
+/*
+ * Names for UDP sysctl objects
+ */
+#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
+#define UDPCTL_MAXID 2
+
+struct mbuf;
+
+void udp_init(Slirp *);
+void udp_cleanup(Slirp *);
+void udp_input(register struct mbuf *, int);
+int udp_attach(struct socket *, unsigned short af);
+void udp_detach(struct socket *);
+struct socket * udp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned,
+ int);
+int udp_output(struct socket *so, struct mbuf *m,
+ struct sockaddr_in *saddr, struct sockaddr_in *daddr,
+ int iptos);
+
+void udp6_input(register struct mbuf *);
+int udp6_output(struct socket *so, struct mbuf *m,
+ struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2013
+ * Guillaume Subiron
+ */
+
+#include "slirp.h"
+#include "udp.h"
+#include "dhcpv6.h"
+
+void udp6_input(struct mbuf *m)
+{
+ Slirp *slirp = m->slirp;
+ struct ip6 *ip, save_ip;
+ struct udphdr *uh;
+ int iphlen = sizeof(struct ip6);
+ int len;
+ struct socket *so;
+ struct sockaddr_in6 lhost;
+
+ DEBUG_CALL("udp6_input");
+ DEBUG_ARG("m = %p", m);
+
+ if (slirp->restricted) {
+ goto bad;
+ }
+
+ ip = mtod(m, struct ip6 *);
+ m->m_len -= iphlen;
+ m->m_data += iphlen;
+ uh = mtod(m, struct udphdr *);
+ m->m_len += iphlen;
+ m->m_data -= iphlen;
+
+ if (ip6_cksum(m)) {
+ goto bad;
+ }
+
+ len = ntohs((uint16_t)uh->uh_ulen);
+
+ /*
+ * Make mbuf data length reflect UDP length.
+ * If not enough data to reflect UDP length, drop.
+ */
+ if (ntohs(ip->ip_pl) != len) {
+ if (len > ntohs(ip->ip_pl)) {
+ goto bad;
+ }
+ m_adj(m, len - ntohs(ip->ip_pl));
+ ip->ip_pl = htons(len);
+ }
+
+ /*
+ * Save a copy of the IP header in case we want restore it
+ * for sending an ICMP error message in response.
+ */
+ save_ip = *ip;
+
+ /* Locate pcb for datagram. */
+ lhost.sin6_family = AF_INET6;
+ lhost.sin6_addr = ip->ip_src;
+ lhost.sin6_port = uh->uh_sport;
+
+ /* handle DHCPv6 */
+ if (ntohs(uh->uh_dport) == DHCPV6_SERVER_PORT &&
+ (in6_equal(&ip->ip_dst, &slirp->vhost_addr6) ||
+ in6_dhcp_multicast(&ip->ip_dst))) {
+ m->m_data += iphlen;
+ m->m_len -= iphlen;
+ dhcpv6_input(&lhost, m);
+ m->m_data -= iphlen;
+ m->m_len += iphlen;
+ goto bad;
+ }
+
+ /* handle TFTP */
+ if (ntohs(uh->uh_dport) == TFTP_SERVER &&
+ !memcmp(ip->ip_dst.s6_addr, slirp->vhost_addr6.s6_addr, 16)) {
+ m->m_data += iphlen;
+ m->m_len -= iphlen;
+ tftp_input((struct sockaddr_storage *)&lhost, m);
+ m->m_data -= iphlen;
+ m->m_len += iphlen;
+ goto bad;
+ }
+
+ so = solookup(&slirp->udp_last_so, &slirp->udb,
+ (struct sockaddr_storage *) &lhost, NULL);
+
+ if (so == NULL) {
+ /* If there's no socket for this packet, create one. */
+ so = socreate(slirp);
+ if (udp_attach(so, AF_INET6) == -1) {
+ DEBUG_MISC(" udp6_attach errno = %d-%s", errno, strerror(errno));
+ sofree(so);
+ goto bad;
+ }
+
+ /* Setup fields */
+ so->so_lfamily = AF_INET6;
+ so->so_laddr6 = ip->ip_src;
+ so->so_lport6 = uh->uh_sport;
+ }
+
+ so->so_ffamily = AF_INET6;
+ so->so_faddr6 = ip->ip_dst; /* XXX */
+ so->so_fport6 = uh->uh_dport; /* XXX */
+
+ iphlen += sizeof(struct udphdr);
+ m->m_len -= iphlen;
+ m->m_data += iphlen;
+
+ /*
+ * Now we sendto() the packet.
+ */
+ if (sosendto(so, m) == -1) {
+ m->m_len += iphlen;
+ m->m_data -= iphlen;
+ *ip = save_ip;
+ DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno));
+ icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE);
+ goto bad;
+ }
+
+ m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
+
+ /* restore the orig mbuf packet */
+ m->m_len += iphlen;
+ m->m_data -= iphlen;
+ *ip = save_ip;
+ so->so_m = m;
+
+ return;
+bad:
+ m_free(m);
+}
+
+int udp6_output(struct socket *so, struct mbuf *m,
+ struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr)
+{
+ struct ip6 *ip;
+ struct udphdr *uh;
+
+ DEBUG_CALL("udp6_output");
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("m = %p", m);
+
+ /* adjust for header */
+ m->m_data -= sizeof(struct udphdr);
+ m->m_len += sizeof(struct udphdr);
+ uh = mtod(m, struct udphdr *);
+ m->m_data -= sizeof(struct ip6);
+ m->m_len += sizeof(struct ip6);
+ ip = mtod(m, struct ip6 *);
+
+ /* Build IP header */
+ ip->ip_pl = htons(m->m_len - sizeof(struct ip6));
+ ip->ip_nh = IPPROTO_UDP;
+ ip->ip_src = saddr->sin6_addr;
+ ip->ip_dst = daddr->sin6_addr;
+
+ /* Build UDP header */
+ uh->uh_sport = saddr->sin6_port;
+ uh->uh_dport = daddr->sin6_port;
+ uh->uh_ulen = ip->ip_pl;
+ uh->uh_sum = 0;
+ uh->uh_sum = ip6_cksum(m);
+ if (uh->uh_sum == 0) {
+ uh->uh_sum = 0xffff;
+ }
+
+ return ip6_output(so, m, 0);
+}
--- /dev/null
+/*
+ * util.c (mostly based on QEMU os-win32.c)
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2010-2016 Red Hat, Inc.
+ *
+ * QEMU library functions for win32 which are shared between QEMU and
+ * the QEMU tools.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "util.h"
+
+#include <glib.h>
+#include <fcntl.h>
+#include <stdint.h>
+
+#if defined(_WIN32)
+int slirp_inet_aton(const char *cp, struct in_addr *ia)
+{
+ uint32_t addr = inet_addr(cp);
+ if (addr == 0xffffffff) {
+ return 0;
+ }
+ ia->s_addr = addr;
+ return 1;
+}
+#endif
+
+void slirp_set_nonblock(int fd)
+{
+#ifndef _WIN32
+ int f;
+ f = fcntl(fd, F_GETFL);
+ assert(f != -1);
+ f = fcntl(fd, F_SETFL, f | O_NONBLOCK);
+ assert(f != -1);
+#else
+ unsigned long opt = 1;
+ ioctlsocket(fd, FIONBIO, &opt);
+#endif
+}
+
+static void slirp_set_cloexec(int fd)
+{
+#ifndef _WIN32
+ int f;
+ f = fcntl(fd, F_GETFD);
+ assert(f != -1);
+ f = fcntl(fd, F_SETFD, f | FD_CLOEXEC);
+ assert(f != -1);
+#endif
+}
+
+/*
+ * Opens a socket with FD_CLOEXEC set
+ */
+int slirp_socket(int domain, int type, int protocol)
+{
+ int ret;
+
+#ifdef SOCK_CLOEXEC
+ ret = socket(domain, type | SOCK_CLOEXEC, protocol);
+ if (ret != -1 || errno != EINVAL) {
+ return ret;
+ }
+#endif
+ ret = socket(domain, type, protocol);
+ if (ret >= 0) {
+ slirp_set_cloexec(ret);
+ }
+
+ return ret;
+}
+
+#ifdef _WIN32
+static int socket_error(void)
+{
+ switch (WSAGetLastError()) {
+ case 0:
+ return 0;
+ case WSAEINTR:
+ return EINTR;
+ case WSAEINVAL:
+ return EINVAL;
+ case WSA_INVALID_HANDLE:
+ return EBADF;
+ case WSA_NOT_ENOUGH_MEMORY:
+ return ENOMEM;
+ case WSA_INVALID_PARAMETER:
+ return EINVAL;
+ case WSAENAMETOOLONG:
+ return ENAMETOOLONG;
+ case WSAENOTEMPTY:
+ return ENOTEMPTY;
+ case WSAEWOULDBLOCK:
+ /* not using EWOULDBLOCK as we don't want code to have
+ * to check both EWOULDBLOCK and EAGAIN */
+ return EAGAIN;
+ case WSAEINPROGRESS:
+ return EINPROGRESS;
+ case WSAEALREADY:
+ return EALREADY;
+ case WSAENOTSOCK:
+ return ENOTSOCK;
+ case WSAEDESTADDRREQ:
+ return EDESTADDRREQ;
+ case WSAEMSGSIZE:
+ return EMSGSIZE;
+ case WSAEPROTOTYPE:
+ return EPROTOTYPE;
+ case WSAENOPROTOOPT:
+ return ENOPROTOOPT;
+ case WSAEPROTONOSUPPORT:
+ return EPROTONOSUPPORT;
+ case WSAEOPNOTSUPP:
+ return EOPNOTSUPP;
+ case WSAEAFNOSUPPORT:
+ return EAFNOSUPPORT;
+ case WSAEADDRINUSE:
+ return EADDRINUSE;
+ case WSAEADDRNOTAVAIL:
+ return EADDRNOTAVAIL;
+ case WSAENETDOWN:
+ return ENETDOWN;
+ case WSAENETUNREACH:
+ return ENETUNREACH;
+ case WSAENETRESET:
+ return ENETRESET;
+ case WSAECONNABORTED:
+ return ECONNABORTED;
+ case WSAECONNRESET:
+ return ECONNRESET;
+ case WSAENOBUFS:
+ return ENOBUFS;
+ case WSAEISCONN:
+ return EISCONN;
+ case WSAENOTCONN:
+ return ENOTCONN;
+ case WSAETIMEDOUT:
+ return ETIMEDOUT;
+ case WSAECONNREFUSED:
+ return ECONNREFUSED;
+ case WSAELOOP:
+ return ELOOP;
+ case WSAEHOSTUNREACH:
+ return EHOSTUNREACH;
+ default:
+ return EIO;
+ }
+}
+
+#undef ioctlsocket
+int slirp_ioctlsocket_wrap(int fd, int req, void *val)
+{
+ int ret;
+ ret = ioctlsocket(fd, req, val);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef closesocket
+int slirp_closesocket_wrap(int fd)
+{
+ int ret;
+ ret = closesocket(fd);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef connect
+int slirp_connect_wrap(int sockfd, const struct sockaddr *addr, int addrlen)
+{
+ int ret;
+ ret = connect(sockfd, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef listen
+int slirp_listen_wrap(int sockfd, int backlog)
+{
+ int ret;
+ ret = listen(sockfd, backlog);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef bind
+int slirp_bind_wrap(int sockfd, const struct sockaddr *addr, int addrlen)
+{
+ int ret;
+ ret = bind(sockfd, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef socket
+int slirp_socket_wrap(int domain, int type, int protocol)
+{
+ int ret;
+ ret = socket(domain, type, protocol);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef accept
+int slirp_accept_wrap(int sockfd, struct sockaddr *addr, int *addrlen)
+{
+ int ret;
+ ret = accept(sockfd, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef shutdown
+int slirp_shutdown_wrap(int sockfd, int how)
+{
+ int ret;
+ ret = shutdown(sockfd, how);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef getsockopt
+int slirp_getsockopt_wrap(int sockfd, int level, int optname,
+ void *optval, int *optlen)
+{
+ int ret;
+ ret = getsockopt(sockfd, level, optname, optval, optlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef setsockopt
+int slirp_setsockopt_wrap(int sockfd, int level, int optname,
+ const void *optval, int optlen)
+{
+ int ret;
+ ret = setsockopt(sockfd, level, optname, optval, optlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef getpeername
+int slirp_getpeername_wrap(int sockfd, struct sockaddr *addr,
+ int *addrlen)
+{
+ int ret;
+ ret = getpeername(sockfd, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef getsockname
+int slirp_getsockname_wrap(int sockfd, struct sockaddr *addr,
+ int *addrlen)
+{
+ int ret;
+ ret = getsockname(sockfd, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef send
+ssize_t slirp_send_wrap(int sockfd, const void *buf, size_t len, int flags)
+{
+ int ret;
+ ret = send(sockfd, buf, len, flags);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef sendto
+ssize_t slirp_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
+ const struct sockaddr *addr, int addrlen)
+{
+ int ret;
+ ret = sendto(sockfd, buf, len, flags, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef recv
+ssize_t slirp_recv_wrap(int sockfd, void *buf, size_t len, int flags)
+{
+ int ret;
+ ret = recv(sockfd, buf, len, flags);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+
+#undef recvfrom
+ssize_t slirp_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
+ struct sockaddr *addr, int *addrlen)
+{
+ int ret;
+ ret = recvfrom(sockfd, buf, len, flags, addr, addrlen);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ return ret;
+}
+#endif /* WIN32 */
+
+void slirp_pstrcpy(char *buf, int buf_size, const char *str)
+{
+ int c;
+ char *q = buf;
+
+ if (buf_size <= 0)
+ return;
+
+ for(;;) {
+ c = *str++;
+ if (c == 0 || q >= buf + buf_size - 1)
+ break;
+ *q++ = c;
+ }
+ *q = '\0';
+}
--- /dev/null
+/*
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2010-2019 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef UTIL_H_
+#define UTIL_H_
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <inttypes.h>
+
+#ifdef _WIN32
+#include <winsock2.h>
+#include <windows.h>
+#else
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+#endif
+
+#if defined(_WIN32)
+# define SLIRP_PACKED __attribute__((gcc_struct, packed))
+#else
+# define SLIRP_PACKED __attribute__((packed))
+#endif
+
+#ifndef DIV_ROUND_UP
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+#endif
+
+#ifndef container_of
+#define container_of(ptr, type, member) __extension__ ({ \
+ void *__mptr = (void *)(ptr); \
+ ((type *)(__mptr - offsetof(type, member))); })
+#endif
+
+#if defined(_WIN32) /* CONFIG_IOVEC */
+# if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */
+struct iovec {
+ void *iov_base;
+ size_t iov_len;
+};
+# endif
+#else
+#include <sys/uio.h>
+#endif
+
+#define SCALE_MS 1000000
+
+#define ETH_ALEN 6
+#define ETH_HLEN 14
+#define ETH_P_IP (0x0800) /* Internet Protocol packet */
+#define ETH_P_ARP (0x0806) /* Address Resolution packet */
+#define ETH_P_IPV6 (0x86dd)
+#define ETH_P_VLAN (0x8100)
+#define ETH_P_DVLAN (0x88a8)
+#define ETH_P_NCSI (0x88f8)
+#define ETH_P_UNKNOWN (0xffff)
+
+/* FIXME: remove me when made standalone */
+#ifdef _WIN32
+#undef accept
+#undef bind
+#undef closesocket
+#undef connect
+#undef getpeername
+#undef getsockname
+#undef getsockopt
+#undef ioctlsocket
+#undef listen
+#undef recv
+#undef recvfrom
+#undef send
+#undef sendto
+#undef setsockopt
+#undef shutdown
+#undef socket
+#endif
+
+#ifdef _WIN32
+#define connect slirp_connect_wrap
+int slirp_connect_wrap(int fd, const struct sockaddr *addr, int addrlen);
+#define listen slirp_listen_wrap
+int slirp_listen_wrap(int fd, int backlog);
+#define bind slirp_bind_wrap
+int slirp_bind_wrap(int fd, const struct sockaddr *addr, int addrlen);
+#define socket slirp_socket_wrap
+int slirp_socket_wrap(int domain, int type, int protocol);
+#define accept slirp_accept_wrap
+int slirp_accept_wrap(int fd, struct sockaddr *addr, int *addrlen);
+#define shutdown slirp_shutdown_wrap
+int slirp_shutdown_wrap(int fd, int how);
+#define getpeername slirp_getpeername_wrap
+int slirp_getpeername_wrap(int fd, struct sockaddr *addr, int *addrlen);
+#define getsockname slirp_getsockname_wrap
+int slirp_getsockname_wrap(int fd, struct sockaddr *addr, int *addrlen);
+#define send slirp_send_wrap
+ssize_t slirp_send_wrap(int fd, const void *buf, size_t len, int flags);
+#define sendto slirp_sendto_wrap
+ssize_t slirp_sendto_wrap(int fd, const void *buf, size_t len, int flags,
+ const struct sockaddr *dest_addr, int addrlen);
+#define recv slirp_recv_wrap
+ssize_t slirp_recv_wrap(int fd, void *buf, size_t len, int flags);
+#define recvfrom slirp_recvfrom_wrap
+ssize_t slirp_recvfrom_wrap(int fd, void *buf, size_t len, int flags,
+ struct sockaddr *src_addr, int *addrlen);
+#define closesocket slirp_closesocket_wrap
+int slirp_closesocket_wrap(int fd);
+#define ioctlsocket slirp_ioctlsocket_wrap
+int slirp_ioctlsocket_wrap(int fd, int req, void *val);
+#define getsockopt slirp_getsockopt_wrap
+int slirp_getsockopt_wrap(int sockfd, int level, int optname,
+ void *optval, int *optlen);
+#define setsockopt slirp_setsockopt_wrap
+int slirp_setsockopt_wrap(int sockfd, int level, int optname,
+ const void *optval, int optlen);
+#define inet_aton slirp_inet_aton
+int slirp_inet_aton(const char *cp, struct in_addr *ia);
+#else
+#define closesocket(s) close(s)
+#define ioctlsocket(s, r, v) ioctl(s, r, v)
+#endif
+
+int slirp_socket(int domain, int type, int protocol);
+void slirp_set_nonblock(int fd);
+
+static inline int slirp_socket_set_nodelay(int fd)
+{
+ int v = 1;
+ return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
+}
+
+static inline int slirp_socket_set_fast_reuse(int fd)
+{
+#ifndef _WIN32
+ int v = 1;
+ return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v));
+#else
+ /* Enabling the reuse of an endpoint that was used by a socket still in
+ * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
+ * fast reuse is the default and SO_REUSEADDR does strange things. So we
+ * don't have to do anything here. More info can be found at:
+ * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
+ return 0;
+#endif
+}
+
+void slirp_pstrcpy(char *buf, int buf_size, const char *str);
+
+#endif
--- /dev/null
+/*
+ * VMState interpreter
+ *
+ * Copyright (c) 2009-2018 Red Hat Inc
+ *
+ * Authors:
+ * Juan Quintela <quintela@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <glib.h>
+
+#include "stream.h"
+#include "vmstate.h"
+
+static int get_nullptr(SlirpIStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ if (slirp_istream_read_u8(f) == VMS_NULLPTR_MARKER) {
+ return 0;
+ }
+ g_warning("vmstate: get_nullptr expected VMS_NULLPTR_MARKER");
+ return -EINVAL;
+}
+
+static int put_nullptr(SlirpOStream *f, void *pv, size_t size,
+ const VMStateField *field)
+
+{
+ if (pv == NULL) {
+ slirp_ostream_write_u8(f, VMS_NULLPTR_MARKER);
+ return 0;
+ }
+ g_warning("vmstate: put_nullptr must be called with pv == NULL");
+ return -EINVAL;
+}
+
+const VMStateInfo slirp_vmstate_info_nullptr = {
+ .name = "uint64",
+ .get = get_nullptr,
+ .put = put_nullptr,
+};
+
+/* 8 bit unsigned int */
+
+static int get_uint8(SlirpIStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ uint8_t *v = pv;
+ *v = slirp_istream_read_u8(f);
+ return 0;
+}
+
+static int put_uint8(SlirpOStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ uint8_t *v = pv;
+ slirp_ostream_write_u8(f, *v);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_uint8 = {
+ .name = "uint8",
+ .get = get_uint8,
+ .put = put_uint8,
+};
+
+/* 16 bit unsigned int */
+
+static int get_uint16(SlirpIStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ uint16_t *v = pv;
+ *v = slirp_istream_read_u16(f);
+ return 0;
+}
+
+static int put_uint16(SlirpOStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ uint16_t *v = pv;
+ slirp_ostream_write_u16(f, *v);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_uint16 = {
+ .name = "uint16",
+ .get = get_uint16,
+ .put = put_uint16,
+};
+
+/* 32 bit unsigned int */
+
+static int get_uint32(SlirpIStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ uint32_t *v = pv;
+ *v = slirp_istream_read_u32(f);
+ return 0;
+}
+
+static int put_uint32(SlirpOStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ uint32_t *v = pv;
+ slirp_ostream_write_u32(f, *v);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_uint32 = {
+ .name = "uint32",
+ .get = get_uint32,
+ .put = put_uint32,
+};
+
+/* 16 bit int */
+
+static int get_int16(SlirpIStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ int16_t *v = pv;
+ *v = slirp_istream_read_i16(f);
+ return 0;
+}
+
+static int put_int16(SlirpOStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ int16_t *v = pv;
+ slirp_ostream_write_i16(f, *v);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_int16 = {
+ .name = "int16",
+ .get = get_int16,
+ .put = put_int16,
+};
+
+/* 32 bit int */
+
+static int get_int32(SlirpIStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ int32_t *v = pv;
+ *v = slirp_istream_read_i32(f);
+ return 0;
+}
+
+static int put_int32(SlirpOStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ int32_t *v = pv;
+ slirp_ostream_write_i32(f, *v);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_int32 = {
+ .name = "int32",
+ .get = get_int32,
+ .put = put_int32,
+};
+
+/* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate
+ * a temporary buffer and the pre_load/pre_save methods in the child vmsd
+ * copy stuff from the parent into the child and do calculations to fill
+ * in fields that don't really exist in the parent but need to be in the
+ * stream.
+ */
+static int get_tmp(SlirpIStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ int ret;
+ const VMStateDescription *vmsd = field->vmsd;
+ int version_id = field->version_id;
+ void *tmp = g_malloc(size);
+
+ /* Writes the parent field which is at the start of the tmp */
+ *(void **)tmp = pv;
+ ret = slirp_vmstate_load_state(f, vmsd, tmp, version_id);
+ g_free(tmp);
+ return ret;
+}
+
+static int put_tmp(SlirpOStream *f, void *pv, size_t size, const VMStateField *field)
+{
+ const VMStateDescription *vmsd = field->vmsd;
+ void *tmp = g_malloc(size);
+ int ret;
+
+ /* Writes the parent field which is at the start of the tmp */
+ *(void **)tmp = pv;
+ ret = slirp_vmstate_save_state(f, vmsd, tmp);
+ g_free(tmp);
+
+ return ret;
+}
+
+const VMStateInfo slirp_vmstate_info_tmp = {
+ .name = "tmp",
+ .get = get_tmp,
+ .put = put_tmp,
+};
+
+/* uint8_t buffers */
+
+static int get_buffer(SlirpIStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ slirp_istream_read(f, pv, size);
+ return 0;
+}
+
+static int put_buffer(SlirpOStream *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ slirp_ostream_write(f, pv, size);
+ return 0;
+}
+
+const VMStateInfo slirp_vmstate_info_buffer = {
+ .name = "buffer",
+ .get = get_buffer,
+ .put = put_buffer,
+};
+
+static int vmstate_n_elems(void *opaque, const VMStateField *field)
+{
+ int n_elems = 1;
+
+ if (field->flags & VMS_ARRAY) {
+ n_elems = field->num;
+ } else if (field->flags & VMS_VARRAY_INT32) {
+ n_elems = *(int32_t *)(opaque + field->num_offset);
+ } else if (field->flags & VMS_VARRAY_UINT32) {
+ n_elems = *(uint32_t *)(opaque + field->num_offset);
+ } else if (field->flags & VMS_VARRAY_UINT16) {
+ n_elems = *(uint16_t *)(opaque + field->num_offset);
+ } else if (field->flags & VMS_VARRAY_UINT8) {
+ n_elems = *(uint8_t *)(opaque + field->num_offset);
+ }
+
+ if (field->flags & VMS_MULTIPLY_ELEMENTS) {
+ n_elems *= field->num;
+ }
+
+ return n_elems;
+}
+
+static int vmstate_size(void *opaque, const VMStateField *field)
+{
+ int size = field->size;
+
+ if (field->flags & VMS_VBUFFER) {
+ size = *(int32_t *)(opaque + field->size_offset);
+ if (field->flags & VMS_MULTIPLY) {
+ size *= field->size;
+ }
+ }
+
+ return size;
+}
+
+static int
+vmstate_save_state_v(SlirpOStream *f, const VMStateDescription *vmsd,
+ void *opaque, int version_id)
+{
+ int ret = 0;
+ const VMStateField *field = vmsd->fields;
+
+ if (vmsd->pre_save) {
+ ret = vmsd->pre_save(opaque);
+ if (ret) {
+ g_warning("pre-save failed: %s", vmsd->name);
+ return ret;
+ }
+ }
+
+ while (field->name) {
+ if ((field->field_exists &&
+ field->field_exists(opaque, version_id)) ||
+ (!field->field_exists &&
+ field->version_id <= version_id)) {
+ void *first_elem = opaque + field->offset;
+ int i, n_elems = vmstate_n_elems(opaque, field);
+ int size = vmstate_size(opaque, field);
+
+ if (field->flags & VMS_POINTER) {
+ first_elem = *(void **)first_elem;
+ assert(first_elem || !n_elems || !size);
+ }
+ for (i = 0; i < n_elems; i++) {
+ void *curr_elem = first_elem + size * i;
+ ret = 0;
+
+ if (field->flags & VMS_ARRAY_OF_POINTER) {
+ assert(curr_elem);
+ curr_elem = *(void **)curr_elem;
+ }
+ if (!curr_elem && size) {
+ /* if null pointer write placeholder and do not follow */
+ assert(field->flags & VMS_ARRAY_OF_POINTER);
+ ret = slirp_vmstate_info_nullptr.put(f, curr_elem, size, NULL);
+ } else if (field->flags & VMS_STRUCT) {
+ ret = slirp_vmstate_save_state(f, field->vmsd, curr_elem);
+ } else if (field->flags & VMS_VSTRUCT) {
+ ret = vmstate_save_state_v(f, field->vmsd, curr_elem,
+ field->struct_version_id);
+ } else {
+ ret = field->info->put(f, curr_elem, size, field);
+ }
+ if (ret) {
+ g_warning("Save of field %s/%s failed",
+ vmsd->name, field->name);
+ return ret;
+ }
+ }
+ } else {
+ if (field->flags & VMS_MUST_EXIST) {
+ g_warning("Output state validation failed: %s/%s",
+ vmsd->name, field->name);
+ assert(!(field->flags & VMS_MUST_EXIST));
+ }
+ }
+ field++;
+ }
+
+ return 0;
+}
+
+int slirp_vmstate_save_state(SlirpOStream *f, const VMStateDescription *vmsd,
+ void *opaque)
+{
+ return vmstate_save_state_v(f, vmsd, opaque, vmsd->version_id);
+}
+
+static void vmstate_handle_alloc(void *ptr, VMStateField *field, void *opaque)
+{
+ if (field->flags & VMS_POINTER && field->flags & VMS_ALLOC) {
+ size_t size = vmstate_size(opaque, field);
+ size *= vmstate_n_elems(opaque, field);
+ if (size) {
+ *(void **)ptr = g_malloc(size);
+ }
+ }
+}
+
+int slirp_vmstate_load_state(SlirpIStream *f, const VMStateDescription *vmsd,
+ void *opaque, int version_id)
+{
+ VMStateField *field = vmsd->fields;
+ int ret = 0;
+
+ if (version_id > vmsd->version_id) {
+ g_warning("%s: incoming version_id %d is too new "
+ "for local version_id %d",
+ vmsd->name, version_id, vmsd->version_id);
+ return -EINVAL;
+ }
+ if (vmsd->pre_load) {
+ int ret = vmsd->pre_load(opaque);
+ if (ret) {
+ return ret;
+ }
+ }
+ while (field->name) {
+ if ((field->field_exists &&
+ field->field_exists(opaque, version_id)) ||
+ (!field->field_exists &&
+ field->version_id <= version_id)) {
+ void *first_elem = opaque + field->offset;
+ int i, n_elems = vmstate_n_elems(opaque, field);
+ int size = vmstate_size(opaque, field);
+
+ vmstate_handle_alloc(first_elem, field, opaque);
+ if (field->flags & VMS_POINTER) {
+ first_elem = *(void **)first_elem;
+ assert(first_elem || !n_elems || !size);
+ }
+ for (i = 0; i < n_elems; i++) {
+ void *curr_elem = first_elem + size * i;
+
+ if (field->flags & VMS_ARRAY_OF_POINTER) {
+ curr_elem = *(void **)curr_elem;
+ }
+ if (!curr_elem && size) {
+ /* if null pointer check placeholder and do not follow */
+ assert(field->flags & VMS_ARRAY_OF_POINTER);
+ ret = slirp_vmstate_info_nullptr.get(f, curr_elem, size, NULL);
+ } else if (field->flags & VMS_STRUCT) {
+ ret = slirp_vmstate_load_state(f, field->vmsd, curr_elem,
+ field->vmsd->version_id);
+ } else if (field->flags & VMS_VSTRUCT) {
+ ret = slirp_vmstate_load_state(f, field->vmsd, curr_elem,
+ field->struct_version_id);
+ } else {
+ ret = field->info->get(f, curr_elem, size, field);
+ }
+ if (ret < 0) {
+ g_warning("Failed to load %s:%s", vmsd->name,
+ field->name);
+ return ret;
+ }
+ }
+ } else if (field->flags & VMS_MUST_EXIST) {
+ g_warning("Input validation failed: %s/%s",
+ vmsd->name, field->name);
+ return -1;
+ }
+ field++;
+ }
+ if (vmsd->post_load) {
+ ret = vmsd->post_load(opaque, version_id);
+ }
+ return ret;
+}
--- /dev/null
+/*
+ * QEMU migration/snapshot declarations
+ *
+ * Copyright (c) 2009-2011 Red Hat, Inc.
+ *
+ * Original author: Juan Quintela <quintela@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef VMSTATE_H_
+#define VMSTATE_H_
+
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include "slirp.h"
+#include "stream.h"
+
+#define stringify(s) tostring(s)
+#define tostring(s) #s
+
+typedef struct VMStateInfo VMStateInfo;
+typedef struct VMStateDescription VMStateDescription;
+typedef struct VMStateField VMStateField;
+
+int slirp_vmstate_save_state(SlirpOStream *f, const VMStateDescription *vmsd,
+ void *opaque);
+int slirp_vmstate_load_state(SlirpIStream *f, const VMStateDescription *vmsd,
+ void *opaque, int version_id);
+
+/* VMStateInfo allows customized migration of objects that don't fit in
+ * any category in VMStateFlags. Additional information is always passed
+ * into get and put in terms of field and vmdesc parameters. However
+ * these two parameters should only be used in cases when customized
+ * handling is needed, such as QTAILQ. For primitive data types such as
+ * integer, field and vmdesc parameters should be ignored inside get/put.
+ */
+struct VMStateInfo {
+ const char *name;
+ int (*get)(SlirpIStream *f, void *pv, size_t size, const VMStateField *field);
+ int (*put)(SlirpOStream *f, void *pv, size_t size, const VMStateField *field);
+};
+
+enum VMStateFlags {
+ /* Ignored */
+ VMS_SINGLE = 0x001,
+
+ /* The struct member at opaque + VMStateField.offset is a pointer
+ * to the actual field (e.g. struct a { uint8_t *b;
+ * }). Dereference the pointer before using it as basis for
+ * further pointer arithmetic (see e.g. VMS_ARRAY). Does not
+ * affect the meaning of VMStateField.num_offset or
+ * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for
+ * those. */
+ VMS_POINTER = 0x002,
+
+ /* The field is an array of fixed size. VMStateField.num contains
+ * the number of entries in the array. The size of each entry is
+ * given by VMStateField.size and / or opaque +
+ * VMStateField.size_offset; see VMS_VBUFFER and
+ * VMS_MULTIPLY. Each array entry will be processed individually
+ * (VMStateField.info.get()/put() if VMS_STRUCT is not set,
+ * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not
+ * be combined with VMS_VARRAY*. */
+ VMS_ARRAY = 0x004,
+
+ /* The field is itself a struct, containing one or more
+ * fields. Recurse into VMStateField.vmsd. Most useful in
+ * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each
+ * array entry. */
+ VMS_STRUCT = 0x008,
+
+ /* The field is an array of variable size. The int32_t at opaque +
+ * VMStateField.num_offset contains the number of entries in the
+ * array. See the VMS_ARRAY description regarding array handling
+ * in general. May not be combined with VMS_ARRAY or any other
+ * VMS_VARRAY*. */
+ VMS_VARRAY_INT32 = 0x010,
+
+ /* Ignored */
+ VMS_BUFFER = 0x020,
+
+ /* The field is a (fixed-size or variable-size) array of pointers
+ * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry
+ * before using it. Note: Does not imply any one of VMS_ARRAY /
+ * VMS_VARRAY*; these need to be set explicitly. */
+ VMS_ARRAY_OF_POINTER = 0x040,
+
+ /* The field is an array of variable size. The uint16_t at opaque
+ * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT16 = 0x080,
+
+ /* The size of the individual entries (a single array entry if
+ * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if
+ * neither is set) is variable (i.e. not known at compile-time),
+ * but the same for all entries. Use the int32_t at opaque +
+ * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine
+ * the size of each (and every) entry. */
+ VMS_VBUFFER = 0x100,
+
+ /* Multiply the entry size given by the int32_t at opaque +
+ * VMStateField.size_offset (see VMS_VBUFFER description) with
+ * VMStateField.size to determine the number of bytes to be
+ * allocated. Only valid in combination with VMS_VBUFFER. */
+ VMS_MULTIPLY = 0x200,
+
+ /* The field is an array of variable size. The uint8_t at opaque +
+ * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT8 = 0x400,
+
+ /* The field is an array of variable size. The uint32_t at opaque
+ * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
+ * contains the number of entries in the array. See the VMS_ARRAY
+ * description regarding array handling in general. May not be
+ * combined with VMS_ARRAY or any other VMS_VARRAY*. */
+ VMS_VARRAY_UINT32 = 0x800,
+
+ /* Fail loading the serialised VM state if this field is missing
+ * from the input. */
+ VMS_MUST_EXIST = 0x1000,
+
+ /* When loading serialised VM state, allocate memory for the
+ * (entire) field. Only valid in combination with
+ * VMS_POINTER. Note: Not all combinations with other flags are
+ * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't
+ * cause the individual entries to be allocated. */
+ VMS_ALLOC = 0x2000,
+
+ /* Multiply the number of entries given by the integer at opaque +
+ * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num
+ * to determine the number of entries in the array. Only valid in
+ * combination with one of VMS_VARRAY*. */
+ VMS_MULTIPLY_ELEMENTS = 0x4000,
+
+ /* A structure field that is like VMS_STRUCT, but uses
+ * VMStateField.struct_version_id to tell which version of the
+ * structure we are referencing to use. */
+ VMS_VSTRUCT = 0x8000,
+};
+
+struct VMStateField {
+ const char *name;
+ size_t offset;
+ size_t size;
+ size_t start;
+ int num;
+ size_t num_offset;
+ size_t size_offset;
+ const VMStateInfo *info;
+ enum VMStateFlags flags;
+ const VMStateDescription *vmsd;
+ int version_id;
+ int struct_version_id;
+ bool (*field_exists)(void *opaque, int version_id);
+};
+
+struct VMStateDescription {
+ const char *name;
+ int version_id;
+ int (*pre_load)(void *opaque);
+ int (*post_load)(void *opaque, int version_id);
+ int (*pre_save)(void *opaque);
+ VMStateField *fields;
+};
+
+
+extern const VMStateInfo slirp_vmstate_info_int16;
+extern const VMStateInfo slirp_vmstate_info_int32;
+extern const VMStateInfo slirp_vmstate_info_uint8;
+extern const VMStateInfo slirp_vmstate_info_uint16;
+extern const VMStateInfo slirp_vmstate_info_uint32;
+
+/** Put this in the stream when migrating a null pointer.*/
+#define VMS_NULLPTR_MARKER (0x30U) /* '0' */
+extern const VMStateInfo slirp_vmstate_info_nullptr;
+
+extern const VMStateInfo slirp_vmstate_info_buffer;
+extern const VMStateInfo slirp_vmstate_info_tmp;
+
+#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
+#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
+#define typeof_field(type, field) typeof(((type *)0)->field)
+#define type_check(t1,t2) ((t1*)0 - (t2*)0)
+
+#define vmstate_offset_value(_state, _field, _type) \
+ (offsetof(_state, _field) + \
+ type_check(_type, typeof_field(_state, _field)))
+
+#define vmstate_offset_pointer(_state, _field, _type) \
+ (offsetof(_state, _field) + \
+ type_check_pointer(_type, typeof_field(_state, _field)))
+
+#define vmstate_offset_array(_state, _field, _type, _num) \
+ (offsetof(_state, _field) + \
+ type_check_array(_type, typeof_field(_state, _field), _num))
+
+#define vmstate_offset_buffer(_state, _field) \
+ vmstate_offset_array(_state, _field, uint8_t, \
+ sizeof(typeof_field(_state, _field)))
+
+/* In the macros below, if there is a _version, that means the macro's
+ * field will be processed only if the version being received is >=
+ * the _version specified. In general, if you add a new field, you
+ * would increment the structure's version and put that version
+ * number into the new field so it would only be processed with the
+ * new version.
+ *
+ * In particular, for VMSTATE_STRUCT() and friends the _version does
+ * *NOT* pick the version of the sub-structure. It works just as
+ * specified above. The version of the top-level structure received
+ * is passed down to all sub-structures. This means that the
+ * sub-structures must have version that are compatible with all the
+ * structures that use them.
+ *
+ * If you want to specify the version of the sub-structure, use
+ * VMSTATE_VSTRUCT(), which allows the specific sub-structure version
+ * to be directly specified.
+ */
+
+#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .field_exists = (_test), \
+ .size = sizeof(_type), \
+ .info = &(_info), \
+ .flags = VMS_SINGLE, \
+ .offset = vmstate_offset_value(_state, _field, _type), \
+}
+
+#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .num = (_num), \
+ .info = &(_info), \
+ .size = sizeof(_type), \
+ .flags = VMS_ARRAY, \
+ .offset = vmstate_offset_array(_state, _field, _type, _num), \
+}
+
+#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .field_exists = (_test), \
+ .vmsd = &(_vmsd), \
+ .size = sizeof(_type), \
+ .flags = VMS_STRUCT, \
+ .offset = vmstate_offset_value(_state, _field, _type), \
+}
+
+#define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .vmsd = &(_vmsd), \
+ .size = sizeof(_type *), \
+ .flags = VMS_STRUCT|VMS_POINTER, \
+ .offset = vmstate_offset_pointer(_state, _field, _type), \
+}
+
+#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
+ .name = (stringify(_field)), \
+ .num = (_num), \
+ .field_exists = (_test), \
+ .version_id = (_version), \
+ .vmsd = &(_vmsd), \
+ .size = sizeof(_type), \
+ .flags = VMS_STRUCT|VMS_ARRAY, \
+ .offset = vmstate_offset_array(_state, _field, _type, _num),\
+}
+
+#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .field_exists = (_test), \
+ .size = (_size - _start), \
+ .info = &slirp_vmstate_info_buffer, \
+ .flags = VMS_BUFFER, \
+ .offset = vmstate_offset_buffer(_state, _field) + _start, \
+}
+
+#define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _field_size) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .field_exists = (_test), \
+ .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
+ .info = &slirp_vmstate_info_buffer, \
+ .flags = VMS_VBUFFER|VMS_POINTER, \
+ .offset = offsetof(_state, _field), \
+}
+
+#define QEMU_BUILD_BUG_ON_STRUCT(x) \
+ struct { \
+ int:(x) ? -1 : 1; \
+ }
+
+#define QEMU_BUILD_BUG_ON_ZERO(x) (sizeof(QEMU_BUILD_BUG_ON_STRUCT(x)) - \
+ sizeof(QEMU_BUILD_BUG_ON_STRUCT(x)))
+
+/* Allocate a temporary of type 'tmp_type', set tmp->parent to _state
+ * and execute the vmsd on the temporary. Note that we're working with
+ * the whole of _state here, not a field within it.
+ * We compile time check that:
+ * That _tmp_type contains a 'parent' member that's a pointer to the
+ * '_state' type
+ * That the pointer is right at the start of _tmp_type.
+ */
+#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \
+ .name = "tmp", \
+ .size = sizeof(_tmp_type) + \
+ QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \
+ type_check_pointer(_state, \
+ typeof_field(_tmp_type, parent)), \
+ .vmsd = &(_vmsd), \
+ .info = &slirp_vmstate_info_tmp, \
+}
+
+#define VMSTATE_SINGLE(_field, _state, _version, _info, _type) \
+ VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
+
+#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) \
+ VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
+
+#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type) \
+ VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type)
+
+#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
+ VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version, \
+ _vmsd, _type)
+
+#define VMSTATE_INT16_V(_f, _s, _v) \
+ VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_int16, int16_t)
+#define VMSTATE_INT32_V(_f, _s, _v) \
+ VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_int32, int32_t)
+
+#define VMSTATE_UINT8_V(_f, _s, _v) \
+ VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint8, uint8_t)
+#define VMSTATE_UINT16_V(_f, _s, _v) \
+ VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint16, uint16_t)
+#define VMSTATE_UINT32_V(_f, _s, _v) \
+ VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint32, uint32_t)
+
+#define VMSTATE_INT16(_f, _s) \
+ VMSTATE_INT16_V(_f, _s, 0)
+#define VMSTATE_INT32(_f, _s) \
+ VMSTATE_INT32_V(_f, _s, 0)
+
+#define VMSTATE_UINT8(_f, _s) \
+ VMSTATE_UINT8_V(_f, _s, 0)
+#define VMSTATE_UINT16(_f, _s) \
+ VMSTATE_UINT16_V(_f, _s, 0)
+#define VMSTATE_UINT32(_f, _s) \
+ VMSTATE_UINT32_V(_f, _s, 0)
+
+#define VMSTATE_UINT16_TEST(_f, _s, _t) \
+ VMSTATE_SINGLE_TEST(_f, _s, _t, 0, slirp_vmstate_info_uint16, uint16_t)
+
+#define VMSTATE_UINT32_TEST(_f, _s, _t) \
+ VMSTATE_SINGLE_TEST(_f, _s, _t, 0, slirp_vmstate_info_uint32, uint32_t)
+
+#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v) \
+ VMSTATE_ARRAY(_f, _s, _n, _v, slirp_vmstate_info_int16, int16_t)
+
+#define VMSTATE_INT16_ARRAY(_f, _s, _n) \
+ VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_BUFFER_V(_f, _s, _v) \
+ VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
+
+#define VMSTATE_BUFFER(_f, _s) \
+ VMSTATE_BUFFER_V(_f, _s, 0)
+
+#define VMSTATE_END_OF_LIST() \
+ {}
+
+#endif
+++ /dev/null
-/*
- * libslirp
- *
- * Copyright (c) 2004-2008 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu/osdep.h"
-
-#include "slirp.h"
-#include "state.h"
-#include "migration/vmstate.h"
-#include "migration/qemu-file-types.h"
-#include "migration/register.h"
-
-static int slirp_tcp_post_load(void *opaque, int version)
-{
- tcp_template((struct tcpcb *)opaque);
-
- return 0;
-}
-
-static const VMStateDescription vmstate_slirp_tcp = {
- .name = "slirp-tcp",
- .version_id = 0,
- .post_load = slirp_tcp_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_INT16(t_state, struct tcpcb),
- VMSTATE_INT16_ARRAY(t_timer, struct tcpcb, TCPT_NTIMERS),
- VMSTATE_INT16(t_rxtshift, struct tcpcb),
- VMSTATE_INT16(t_rxtcur, struct tcpcb),
- VMSTATE_INT16(t_dupacks, struct tcpcb),
- VMSTATE_UINT16(t_maxseg, struct tcpcb),
- VMSTATE_UINT8(t_force, struct tcpcb),
- VMSTATE_UINT16(t_flags, struct tcpcb),
- VMSTATE_UINT32(snd_una, struct tcpcb),
- VMSTATE_UINT32(snd_nxt, struct tcpcb),
- VMSTATE_UINT32(snd_up, struct tcpcb),
- VMSTATE_UINT32(snd_wl1, struct tcpcb),
- VMSTATE_UINT32(snd_wl2, struct tcpcb),
- VMSTATE_UINT32(iss, struct tcpcb),
- VMSTATE_UINT32(snd_wnd, struct tcpcb),
- VMSTATE_UINT32(rcv_wnd, struct tcpcb),
- VMSTATE_UINT32(rcv_nxt, struct tcpcb),
- VMSTATE_UINT32(rcv_up, struct tcpcb),
- VMSTATE_UINT32(irs, struct tcpcb),
- VMSTATE_UINT32(rcv_adv, struct tcpcb),
- VMSTATE_UINT32(snd_max, struct tcpcb),
- VMSTATE_UINT32(snd_cwnd, struct tcpcb),
- VMSTATE_UINT32(snd_ssthresh, struct tcpcb),
- VMSTATE_INT16(t_idle, struct tcpcb),
- VMSTATE_INT16(t_rtt, struct tcpcb),
- VMSTATE_UINT32(t_rtseq, struct tcpcb),
- VMSTATE_INT16(t_srtt, struct tcpcb),
- VMSTATE_INT16(t_rttvar, struct tcpcb),
- VMSTATE_UINT16(t_rttmin, struct tcpcb),
- VMSTATE_UINT32(max_sndwnd, struct tcpcb),
- VMSTATE_UINT8(t_oobflags, struct tcpcb),
- VMSTATE_UINT8(t_iobc, struct tcpcb),
- VMSTATE_INT16(t_softerror, struct tcpcb),
- VMSTATE_UINT8(snd_scale, struct tcpcb),
- VMSTATE_UINT8(rcv_scale, struct tcpcb),
- VMSTATE_UINT8(request_r_scale, struct tcpcb),
- VMSTATE_UINT8(requested_s_scale, struct tcpcb),
- VMSTATE_UINT32(ts_recent, struct tcpcb),
- VMSTATE_UINT32(ts_recent_age, struct tcpcb),
- VMSTATE_UINT32(last_ack_sent, struct tcpcb),
- VMSTATE_END_OF_LIST()
- }
-};
-
-/* The sbuf has a pair of pointers that are migrated as offsets;
- * we calculate the offsets and restore the pointers using
- * pre_save/post_load on a tmp structure.
- */
-struct sbuf_tmp {
- struct sbuf *parent;
- uint32_t roff, woff;
-};
-
-static int sbuf_tmp_pre_save(void *opaque)
-{
- struct sbuf_tmp *tmp = opaque;
- tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data;
- tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data;
-
- return 0;
-}
-
-static int sbuf_tmp_post_load(void *opaque, int version)
-{
- struct sbuf_tmp *tmp = opaque;
- uint32_t requested_len = tmp->parent->sb_datalen;
-
- /* Allocate the buffer space used by the field after the tmp */
- sbreserve(tmp->parent, tmp->parent->sb_datalen);
-
- if (tmp->parent->sb_datalen != requested_len) {
- return -ENOMEM;
- }
- if (tmp->woff >= requested_len ||
- tmp->roff >= requested_len) {
- g_critical("invalid sbuf offsets r/w=%u/%u len=%u",
- tmp->roff, tmp->woff, requested_len);
- return -EINVAL;
- }
-
- tmp->parent->sb_wptr = tmp->parent->sb_data + tmp->woff;
- tmp->parent->sb_rptr = tmp->parent->sb_data + tmp->roff;
-
- return 0;
-}
-
-
-static const VMStateDescription vmstate_slirp_sbuf_tmp = {
- .name = "slirp-sbuf-tmp",
- .post_load = sbuf_tmp_post_load,
- .pre_save = sbuf_tmp_pre_save,
- .version_id = 0,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32(woff, struct sbuf_tmp),
- VMSTATE_UINT32(roff, struct sbuf_tmp),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slirp_sbuf = {
- .name = "slirp-sbuf",
- .version_id = 0,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32(sb_cc, struct sbuf),
- VMSTATE_UINT32(sb_datalen, struct sbuf),
- VMSTATE_WITH_TMP(struct sbuf, struct sbuf_tmp, vmstate_slirp_sbuf_tmp),
- VMSTATE_VBUFFER_UINT32(sb_data, struct sbuf, 0, NULL, sb_datalen),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static bool slirp_older_than_v4(void *opaque, int version_id)
-{
- return version_id < 4;
-}
-
-static bool slirp_family_inet(void *opaque, int version_id)
-{
- union slirp_sockaddr *ssa = (union slirp_sockaddr *)opaque;
- return ssa->ss.ss_family == AF_INET;
-}
-
-static int slirp_socket_pre_load(void *opaque)
-{
- struct socket *so = opaque;
- if (tcp_attach(so) < 0) {
- return -ENOMEM;
- }
- /* Older versions don't load these fields */
- so->so_ffamily = AF_INET;
- so->so_lfamily = AF_INET;
- return 0;
-}
-
-#ifndef _WIN32
-#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_UINT32_TEST(f, s, t)
-#else
-/* Win uses u_long rather than uint32_t - but it's still 32bits long */
-#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_SINGLE_TEST(f, s, t, 0, \
- vmstate_info_uint32, u_long)
-#endif
-
-/* The OS provided ss_family field isn't that portable; it's size
- * and type varies (16/8 bit, signed, unsigned)
- * and the values it contains aren't fully portable.
- */
-typedef struct SS_FamilyTmpStruct {
- union slirp_sockaddr *parent;
- uint16_t portable_family;
-} SS_FamilyTmpStruct;
-
-#define SS_FAMILY_MIG_IPV4 2 /* Linux, BSD, Win... */
-#define SS_FAMILY_MIG_IPV6 10 /* Linux */
-#define SS_FAMILY_MIG_OTHER 0xffff
-
-static int ss_family_pre_save(void *opaque)
-{
- SS_FamilyTmpStruct *tss = opaque;
-
- tss->portable_family = SS_FAMILY_MIG_OTHER;
-
- if (tss->parent->ss.ss_family == AF_INET) {
- tss->portable_family = SS_FAMILY_MIG_IPV4;
- } else if (tss->parent->ss.ss_family == AF_INET6) {
- tss->portable_family = SS_FAMILY_MIG_IPV6;
- }
-
- return 0;
-}
-
-static int ss_family_post_load(void *opaque, int version_id)
-{
- SS_FamilyTmpStruct *tss = opaque;
-
- switch (tss->portable_family) {
- case SS_FAMILY_MIG_IPV4:
- tss->parent->ss.ss_family = AF_INET;
- break;
- case SS_FAMILY_MIG_IPV6:
- case 23: /* compatibility: AF_INET6 from mingw */
- case 28: /* compatibility: AF_INET6 from FreeBSD sys/socket.h */
- tss->parent->ss.ss_family = AF_INET6;
- break;
- default:
- g_critical("invalid ss_family type %x", tss->portable_family);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static const VMStateDescription vmstate_slirp_ss_family = {
- .name = "slirp-socket-addr/ss_family",
- .pre_save = ss_family_pre_save,
- .post_load = ss_family_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_UINT16(portable_family, SS_FamilyTmpStruct),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slirp_socket_addr = {
- .name = "slirp-socket-addr",
- .version_id = 4,
- .fields = (VMStateField[]) {
- VMSTATE_WITH_TMP(union slirp_sockaddr, SS_FamilyTmpStruct,
- vmstate_slirp_ss_family),
- VMSTATE_SIN4_ADDR(sin.sin_addr.s_addr, union slirp_sockaddr,
- slirp_family_inet),
- VMSTATE_UINT16_TEST(sin.sin_port, union slirp_sockaddr,
- slirp_family_inet),
-
-#if 0
- /* Untested: Needs checking by someone with IPv6 test */
- VMSTATE_BUFFER_TEST(sin6.sin6_addr, union slirp_sockaddr,
- slirp_family_inet6),
- VMSTATE_UINT16_TEST(sin6.sin6_port, union slirp_sockaddr,
- slirp_family_inet6),
- VMSTATE_UINT32_TEST(sin6.sin6_flowinfo, union slirp_sockaddr,
- slirp_family_inet6),
- VMSTATE_UINT32_TEST(sin6.sin6_scope_id, union slirp_sockaddr,
- slirp_family_inet6),
-#endif
-
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slirp_socket = {
- .name = "slirp-socket",
- .version_id = 4,
- .pre_load = slirp_socket_pre_load,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32(so_urgc, struct socket),
- /* Pre-v4 versions */
- VMSTATE_SIN4_ADDR(so_faddr.s_addr, struct socket,
- slirp_older_than_v4),
- VMSTATE_SIN4_ADDR(so_laddr.s_addr, struct socket,
- slirp_older_than_v4),
- VMSTATE_UINT16_TEST(so_fport, struct socket, slirp_older_than_v4),
- VMSTATE_UINT16_TEST(so_lport, struct socket, slirp_older_than_v4),
- /* v4 and newer */
- VMSTATE_STRUCT(fhost, struct socket, 4, vmstate_slirp_socket_addr,
- union slirp_sockaddr),
- VMSTATE_STRUCT(lhost, struct socket, 4, vmstate_slirp_socket_addr,
- union slirp_sockaddr),
-
- VMSTATE_UINT8(so_iptos, struct socket),
- VMSTATE_UINT8(so_emu, struct socket),
- VMSTATE_UINT8(so_type, struct socket),
- VMSTATE_INT32(so_state, struct socket),
- VMSTATE_STRUCT(so_rcv, struct socket, 0, vmstate_slirp_sbuf,
- struct sbuf),
- VMSTATE_STRUCT(so_snd, struct socket, 0, vmstate_slirp_sbuf,
- struct sbuf),
- VMSTATE_STRUCT_POINTER(so_tcpcb, struct socket, vmstate_slirp_tcp,
- struct tcpcb),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slirp_bootp_client = {
- .name = "slirp_bootpclient",
- .fields = (VMStateField[]) {
- VMSTATE_UINT16(allocated, BOOTPClient),
- VMSTATE_BUFFER(macaddr, BOOTPClient),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slirp = {
- .name = "slirp",
- .version_id = 4,
- .fields = (VMStateField[]) {
- VMSTATE_UINT16_V(ip_id, Slirp, 2),
- VMSTATE_STRUCT_ARRAY(bootp_clients, Slirp, NB_BOOTP_CLIENTS, 3,
- vmstate_slirp_bootp_client, BOOTPClient),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void slirp_state_save(QEMUFile *f, void *opaque)
-{
- Slirp *slirp = opaque;
- struct gfwd_list *ex_ptr;
-
- for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
- if (ex_ptr->write_cb) {
- struct socket *so;
- so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr,
- ntohs(ex_ptr->ex_fport));
- if (!so) {
- continue;
- }
-
- qemu_put_byte(f, 42);
- vmstate_save_state(f, &vmstate_slirp_socket, so, NULL);
- }
- qemu_put_byte(f, 0);
-
- vmstate_save_state(f, &vmstate_slirp, slirp, NULL);
-}
-
-
-static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
-{
- Slirp *slirp = opaque;
- struct gfwd_list *ex_ptr;
-
- while (qemu_get_byte(f)) {
- int ret;
- struct socket *so = socreate(slirp);
-
- ret = vmstate_load_state(f, &vmstate_slirp_socket, so, version_id);
- if (ret < 0) {
- return ret;
- }
-
- if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) !=
- slirp->vnetwork_addr.s_addr) {
- return -EINVAL;
- }
- for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
- if (ex_ptr->write_cb &&
- so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr &&
- so->so_fport == ex_ptr->ex_fport) {
- break;
- }
- }
- if (!ex_ptr) {
- return -EINVAL;
- }
- }
-
- return vmstate_load_state(f, &vmstate_slirp, slirp, version_id);
-}
-
-void slirp_state_register(Slirp *slirp)
-{
- static SaveVMHandlers savevm_slirp_state = {
- .save_state = slirp_state_save,
- .load_state = slirp_state_load,
- };
-
- register_savevm_live(NULL, "slirp", 0, 4, &savevm_slirp_state, slirp);
-}
-
-void slirp_state_unregister(Slirp *slirp)
-{
- unregister_savevm(NULL, "slirp", slirp);
-}
+++ /dev/null
-#ifndef SLIRP_STATE_H_
-#define SLIRP_STATE_H_
-
-#include "libslirp.h"
-
-void slirp_state_register(Slirp *slirp);
-void slirp_state_unregister(Slirp *slirp);
-
-#endif /* SLIRP_STATE_H_ */
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp.h 8.1 (Berkeley) 6/10/93
- * tcp.h,v 1.3 1994/08/21 05:27:34 paul Exp
- */
-
-#ifndef TCP_H
-#define TCP_H
-
-#include <glib.h>
-
-typedef uint32_t tcp_seq;
-
-#define PR_SLOWHZ 2 /* 2 slow timeouts per second (approx) */
-#define PR_FASTHZ 5 /* 5 fast timeouts per second (not important) */
-
-#define TCP_SNDSPACE 8192
-#define TCP_RCVSPACE 8192
-
-/*
- * TCP header.
- * Per RFC 793, September, 1981.
- */
-#define tcphdr slirp_tcphdr
-struct tcphdr {
- uint16_t th_sport; /* source port */
- uint16_t th_dport; /* destination port */
- tcp_seq th_seq; /* sequence number */
- tcp_seq th_ack; /* acknowledgement number */
-#if G_BYTE_ORDER == G_BIG_ENDIAN
- uint8_t th_off:4, /* data offset */
- th_x2:4; /* (unused) */
-#else
- uint8_t th_x2:4, /* (unused) */
- th_off:4; /* data offset */
-#endif
- uint8_t th_flags;
- uint16_t th_win; /* window */
- uint16_t th_sum; /* checksum */
- uint16_t th_urp; /* urgent pointer */
-};
-
-#include "tcp_var.h"
-
-#ifndef TH_FIN
-#define TH_FIN 0x01
-#define TH_SYN 0x02
-#define TH_RST 0x04
-#define TH_PUSH 0x08
-#define TH_ACK 0x10
-#define TH_URG 0x20
-#endif
-
-#ifndef TCPOPT_EOL
-#define TCPOPT_EOL 0
-#define TCPOPT_NOP 1
-#define TCPOPT_MAXSEG 2
-#define TCPOPT_WINDOW 3
-#define TCPOPT_SACK_PERMITTED 4 /* Experimental */
-#define TCPOPT_SACK 5 /* Experimental */
-#define TCPOPT_TIMESTAMP 8
-
-#define TCPOPT_TSTAMP_HDR \
- (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
-#endif
-
-#ifndef TCPOLEN_MAXSEG
-#define TCPOLEN_MAXSEG 4
-#define TCPOLEN_WINDOW 3
-#define TCPOLEN_SACK_PERMITTED 2
-#define TCPOLEN_TIMESTAMP 10
-#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
-#endif
-
-/*
- * Default maximum segment size for TCP.
- * With an IP MSS of 576, this is 536,
- * but 512 is probably more convenient.
- * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
- *
- * We make this 1460 because we only care about Ethernet in the qemu context.
- */
-#undef TCP_MSS
-#define TCP_MSS 1460
-#undef TCP6_MSS
-#define TCP6_MSS 1440
-
-#undef TCP_MAXWIN
-#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */
-
-#undef TCP_MAX_WINSHIFT
-#define TCP_MAX_WINSHIFT 14 /* maximum window shift */
-
-/*
- * User-settable options (used with setsockopt).
- *
- * We don't use the system headers on unix because we have conflicting
- * local structures. We can't avoid the system definitions on Windows,
- * so we undefine them.
- */
-#undef TCP_NODELAY
-#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
-#undef TCP_MAXSEG
-
-/*
- * TCP FSM state definitions.
- * Per RFC793, September, 1981.
- */
-
-#define TCP_NSTATES 11
-
-#define TCPS_CLOSED 0 /* closed */
-#define TCPS_LISTEN 1 /* listening for connection */
-#define TCPS_SYN_SENT 2 /* active, have sent syn */
-#define TCPS_SYN_RECEIVED 3 /* have send and received syn */
-/* states < TCPS_ESTABLISHED are those where connections not established */
-#define TCPS_ESTABLISHED 4 /* established */
-#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
-/* states > TCPS_CLOSE_WAIT are those where user has closed */
-#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
-#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
-#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
-/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
-#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
-#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
-
-#define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
-#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
-#define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
-
-/*
- * TCP sequence numbers are 32 bit integers operated
- * on with modular arithmetic. These macros can be
- * used to compare such integers.
- */
-#define SEQ_LT(a,b) ((int)((a)-(b)) < 0)
-#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
-#define SEQ_GT(a,b) ((int)((a)-(b)) > 0)
-#define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0)
-
-/*
- * Macros to initialize tcp sequence numbers for
- * send and receive from initial send and receive
- * sequence numbers.
- */
-#define tcp_rcvseqinit(tp) \
- (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1
-
-#define tcp_sendseqinit(tp) \
- (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = (tp)->iss
-
-#define TCP_ISSINCR (125*1024) /* increment for tcp_iss each second */
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_input.c 8.5 (Berkeley) 4/10/94
- * tcp_input.c,v 1.10 1994/10/13 18:36:32 wollman Exp
- */
-
-/*
- * Changes and additions relating to SLiRP
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-
-#define TCPREXMTTHRESH 3
-
-#define TCP_PAWS_IDLE (24 * 24 * 60 * 60 * PR_SLOWHZ)
-
-/* for modulo comparisons of timestamps */
-#define TSTMP_LT(a,b) ((int)((a)-(b)) < 0)
-#define TSTMP_GEQ(a,b) ((int)((a)-(b)) >= 0)
-
-/*
- * Insert segment ti into reassembly queue of tcp with
- * control block tp. Return TH_FIN if reassembly now includes
- * a segment with FIN. The macro form does the common case inline
- * (segment is the next to be received on an established connection,
- * and the queue is empty), avoiding linkage into and removal
- * from the queue and repetition of various conversions.
- * Set DELACK for segments received in order, but ack immediately
- * when segments are out of order (so fast retransmit can work).
- */
-#define TCP_REASS(tp, ti, m, so, flags) { \
- if ((ti)->ti_seq == (tp)->rcv_nxt && \
- tcpfrag_list_empty(tp) && \
- (tp)->t_state == TCPS_ESTABLISHED) { \
- tp->t_flags |= TF_DELACK; \
- (tp)->rcv_nxt += (ti)->ti_len; \
- flags = (ti)->ti_flags & TH_FIN; \
- if (so->so_emu) { \
- if (tcp_emu((so),(m))) sbappend(so, (m)); \
- } else \
- sbappend((so), (m)); \
- } else { \
- (flags) = tcp_reass((tp), (ti), (m)); \
- tp->t_flags |= TF_ACKNOW; \
- } \
-}
-
-static void tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt,
- struct tcpiphdr *ti);
-static void tcp_xmit_timer(register struct tcpcb *tp, int rtt);
-
-static int
-tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti,
- struct mbuf *m)
-{
- register struct tcpiphdr *q;
- struct socket *so = tp->t_socket;
- int flags;
-
- /*
- * Call with ti==NULL after become established to
- * force pre-ESTABLISHED data up to user socket.
- */
- if (ti == NULL)
- goto present;
-
- /*
- * Find a segment which begins after this one does.
- */
- for (q = tcpfrag_list_first(tp); !tcpfrag_list_end(q, tp);
- q = tcpiphdr_next(q))
- if (SEQ_GT(q->ti_seq, ti->ti_seq))
- break;
-
- /*
- * If there is a preceding segment, it may provide some of
- * our data already. If so, drop the data from the incoming
- * segment. If it provides all of our data, drop us.
- */
- if (!tcpfrag_list_end(tcpiphdr_prev(q), tp)) {
- register int i;
- q = tcpiphdr_prev(q);
- /* conversion to int (in i) handles seq wraparound */
- i = q->ti_seq + q->ti_len - ti->ti_seq;
- if (i > 0) {
- if (i >= ti->ti_len) {
- m_free(m);
- /*
- * Try to present any queued data
- * at the left window edge to the user.
- * This is needed after the 3-WHS
- * completes.
- */
- goto present; /* ??? */
- }
- m_adj(m, i);
- ti->ti_len -= i;
- ti->ti_seq += i;
- }
- q = tcpiphdr_next(q);
- }
- ti->ti_mbuf = m;
-
- /*
- * While we overlap succeeding segments trim them or,
- * if they are completely covered, dequeue them.
- */
- while (!tcpfrag_list_end(q, tp)) {
- register int i = (ti->ti_seq + ti->ti_len) - q->ti_seq;
- if (i <= 0)
- break;
- if (i < q->ti_len) {
- q->ti_seq += i;
- q->ti_len -= i;
- m_adj(q->ti_mbuf, i);
- break;
- }
- q = tcpiphdr_next(q);
- m = tcpiphdr_prev(q)->ti_mbuf;
- remque(tcpiphdr2qlink(tcpiphdr_prev(q)));
- m_free(m);
- }
-
- /*
- * Stick new segment in its place.
- */
- insque(tcpiphdr2qlink(ti), tcpiphdr2qlink(tcpiphdr_prev(q)));
-
-present:
- /*
- * Present data to user, advancing rcv_nxt through
- * completed sequence space.
- */
- if (!TCPS_HAVEESTABLISHED(tp->t_state))
- return (0);
- ti = tcpfrag_list_first(tp);
- if (tcpfrag_list_end(ti, tp) || ti->ti_seq != tp->rcv_nxt)
- return (0);
- if (tp->t_state == TCPS_SYN_RECEIVED && ti->ti_len)
- return (0);
- do {
- tp->rcv_nxt += ti->ti_len;
- flags = ti->ti_flags & TH_FIN;
- remque(tcpiphdr2qlink(ti));
- m = ti->ti_mbuf;
- ti = tcpiphdr_next(ti);
- if (so->so_state & SS_FCANTSENDMORE)
- m_free(m);
- else {
- if (so->so_emu) {
- if (tcp_emu(so,m)) sbappend(so, m);
- } else
- sbappend(so, m);
- }
- } while (ti != (struct tcpiphdr *)tp && ti->ti_seq == tp->rcv_nxt);
- return (flags);
-}
-
-/*
- * TCP input routine, follows pages 65-76 of the
- * protocol specification dated September, 1981 very closely.
- */
-void
-tcp_input(struct mbuf *m, int iphlen, struct socket *inso, unsigned short af)
-{
- struct ip save_ip, *ip;
- struct ip6 save_ip6, *ip6;
- register struct tcpiphdr *ti;
- char *optp = NULL;
- int optlen = 0;
- int len, tlen, off;
- register struct tcpcb *tp = NULL;
- register int tiflags;
- struct socket *so = NULL;
- int todrop, acked, ourfinisacked, needoutput = 0;
- int iss = 0;
- uint32_t tiwin;
- int ret;
- struct sockaddr_storage lhost, fhost;
- struct sockaddr_in *lhost4, *fhost4;
- struct sockaddr_in6 *lhost6, *fhost6;
- struct gfwd_list *ex_ptr;
- Slirp *slirp;
-
- DEBUG_CALL("tcp_input");
- DEBUG_ARG("m = %p iphlen = %2d inso = %p",
- m, iphlen, inso);
-
- /*
- * If called with m == 0, then we're continuing the connect
- */
- if (m == NULL) {
- so = inso;
- slirp = so->slirp;
-
- /* Re-set a few variables */
- tp = sototcpcb(so);
- m = so->so_m;
- so->so_m = NULL;
- ti = so->so_ti;
- tiwin = ti->ti_win;
- tiflags = ti->ti_flags;
-
- goto cont_conn;
- }
- slirp = m->slirp;
-
- ip = mtod(m, struct ip *);
- ip6 = mtod(m, struct ip6 *);
-
- switch (af) {
- case AF_INET:
- if (iphlen > sizeof(struct ip)) {
- ip_stripoptions(m, (struct mbuf *)0);
- iphlen = sizeof(struct ip);
- }
- /* XXX Check if too short */
-
-
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip = *ip;
- save_ip.ip_len += iphlen;
-
- /*
- * Get IP and TCP header together in first mbuf.
- * Note: IP leaves IP header in first mbuf.
- */
- m->m_data -= sizeof(struct tcpiphdr) - sizeof(struct ip)
- - sizeof(struct tcphdr);
- m->m_len += sizeof(struct tcpiphdr) - sizeof(struct ip)
- - sizeof(struct tcphdr);
- ti = mtod(m, struct tcpiphdr *);
-
- /*
- * Checksum extended TCP header and data.
- */
- tlen = ip->ip_len;
- tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL;
- memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr));
- memset(&ti->ti, 0, sizeof(ti->ti));
- ti->ti_x0 = 0;
- ti->ti_src = save_ip.ip_src;
- ti->ti_dst = save_ip.ip_dst;
- ti->ti_pr = save_ip.ip_p;
- ti->ti_len = htons((uint16_t)tlen);
- break;
-
- case AF_INET6:
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip6 = *ip6;
- /*
- * Get IP and TCP header together in first mbuf.
- * Note: IP leaves IP header in first mbuf.
- */
- m->m_data -= sizeof(struct tcpiphdr) - (sizeof(struct ip6)
- + sizeof(struct tcphdr));
- m->m_len += sizeof(struct tcpiphdr) - (sizeof(struct ip6)
- + sizeof(struct tcphdr));
- ti = mtod(m, struct tcpiphdr *);
-
- tlen = ip6->ip_pl;
- tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL;
- memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr));
- memset(&ti->ti, 0, sizeof(ti->ti));
- ti->ti_x0 = 0;
- ti->ti_src6 = save_ip6.ip_src;
- ti->ti_dst6 = save_ip6.ip_dst;
- ti->ti_nh6 = save_ip6.ip_nh;
- ti->ti_len = htons((uint16_t)tlen);
- break;
-
- default:
- g_assert_not_reached();
- }
-
- len = ((sizeof(struct tcpiphdr) - sizeof(struct tcphdr)) + tlen);
- if (cksum(m, len)) {
- goto drop;
- }
-
- /*
- * Check that TCP offset makes sense,
- * pull out TCP options and adjust length. XXX
- */
- off = ti->ti_off << 2;
- if (off < sizeof (struct tcphdr) || off > tlen) {
- goto drop;
- }
- tlen -= off;
- ti->ti_len = tlen;
- if (off > sizeof (struct tcphdr)) {
- optlen = off - sizeof (struct tcphdr);
- optp = mtod(m, char *) + sizeof (struct tcpiphdr);
- }
- tiflags = ti->ti_flags;
-
- /*
- * Convert TCP protocol specific fields to host format.
- */
- NTOHL(ti->ti_seq);
- NTOHL(ti->ti_ack);
- NTOHS(ti->ti_win);
- NTOHS(ti->ti_urp);
-
- /*
- * Drop TCP, IP headers and TCP options.
- */
- m->m_data += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
- m->m_len -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
-
- /*
- * Locate pcb for segment.
- */
-findso:
- lhost.ss_family = af;
- fhost.ss_family = af;
- switch (af) {
- case AF_INET:
- lhost4 = (struct sockaddr_in *) &lhost;
- lhost4->sin_addr = ti->ti_src;
- lhost4->sin_port = ti->ti_sport;
- fhost4 = (struct sockaddr_in *) &fhost;
- fhost4->sin_addr = ti->ti_dst;
- fhost4->sin_port = ti->ti_dport;
- break;
- case AF_INET6:
- lhost6 = (struct sockaddr_in6 *) &lhost;
- lhost6->sin6_addr = ti->ti_src6;
- lhost6->sin6_port = ti->ti_sport;
- fhost6 = (struct sockaddr_in6 *) &fhost;
- fhost6->sin6_addr = ti->ti_dst6;
- fhost6->sin6_port = ti->ti_dport;
- break;
- default:
- g_assert_not_reached();
- }
-
- so = solookup(&slirp->tcp_last_so, &slirp->tcb, &lhost, &fhost);
-
- /*
- * If the state is CLOSED (i.e., TCB does not exist) then
- * all data in the incoming segment is discarded.
- * If the TCB exists but is in CLOSED state, it is embryonic,
- * but should either do a listen or a connect soon.
- *
- * state == CLOSED means we've done socreate() but haven't
- * attached it to a protocol yet...
- *
- * XXX If a TCB does not exist, and the TH_SYN flag is
- * the only flag set, then create a session, mark it
- * as if it was LISTENING, and continue...
- */
- if (so == NULL) {
- if (slirp->restricted) {
- /* Any hostfwds will have an existing socket, so we only get here
- * for non-hostfwd connections. These should be dropped, unless it
- * happens to be a guestfwd.
- */
- for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
- if (ex_ptr->ex_fport == ti->ti_dport &&
- ti->ti_dst.s_addr == ex_ptr->ex_addr.s_addr) {
- break;
- }
- }
- if (!ex_ptr) {
- goto dropwithreset;
- }
- }
-
- if ((tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) != TH_SYN)
- goto dropwithreset;
-
- so = socreate(slirp);
- if (tcp_attach(so) < 0) {
- g_free(so); /* Not sofree (if it failed, it's not insqued) */
- goto dropwithreset;
- }
-
- sbreserve(&so->so_snd, TCP_SNDSPACE);
- sbreserve(&so->so_rcv, TCP_RCVSPACE);
-
- so->lhost.ss = lhost;
- so->fhost.ss = fhost;
-
- so->so_iptos = tcp_tos(so);
- if (so->so_iptos == 0) {
- switch (af) {
- case AF_INET:
- so->so_iptos = ((struct ip *)ti)->ip_tos;
- break;
- case AF_INET6:
- break;
- default:
- g_assert_not_reached();
- }
- }
-
- tp = sototcpcb(so);
- tp->t_state = TCPS_LISTEN;
- }
-
- /*
- * If this is a still-connecting socket, this probably
- * a retransmit of the SYN. Whether it's a retransmit SYN
- * or something else, we nuke it.
- */
- if (so->so_state & SS_ISFCONNECTING)
- goto drop;
-
- tp = sototcpcb(so);
-
- /* XXX Should never fail */
- if (tp == NULL)
- goto dropwithreset;
- if (tp->t_state == TCPS_CLOSED)
- goto drop;
-
- tiwin = ti->ti_win;
-
- /*
- * Segment received on connection.
- * Reset idle time and keep-alive timer.
- */
- tp->t_idle = 0;
- if (slirp_do_keepalive)
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL;
- else
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE;
-
- /*
- * Process options if not in LISTEN state,
- * else do it below (after getting remote address).
- */
- if (optp && tp->t_state != TCPS_LISTEN)
- tcp_dooptions(tp, (uint8_t *)optp, optlen, ti);
-
- /*
- * Header prediction: check for the two common cases
- * of a uni-directional data xfer. If the packet has
- * no control flags, is in-sequence, the window didn't
- * change and we're not retransmitting, it's a
- * candidate. If the length is zero and the ack moved
- * forward, we're the sender side of the xfer. Just
- * free the data acked & wake any higher level process
- * that was blocked waiting for space. If the length
- * is non-zero and the ack didn't move, we're the
- * receiver side. If we're getting packets in-order
- * (the reassembly queue is empty), add the data to
- * the socket buffer and note that we need a delayed ack.
- *
- * XXX Some of these tests are not needed
- * eg: the tiwin == tp->snd_wnd prevents many more
- * predictions.. with no *real* advantage..
- */
- if (tp->t_state == TCPS_ESTABLISHED &&
- (tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) == TH_ACK &&
- ti->ti_seq == tp->rcv_nxt &&
- tiwin && tiwin == tp->snd_wnd &&
- tp->snd_nxt == tp->snd_max) {
- if (ti->ti_len == 0) {
- if (SEQ_GT(ti->ti_ack, tp->snd_una) &&
- SEQ_LEQ(ti->ti_ack, tp->snd_max) &&
- tp->snd_cwnd >= tp->snd_wnd) {
- /*
- * this is a pure ack for outstanding data.
- */
- if (tp->t_rtt &&
- SEQ_GT(ti->ti_ack, tp->t_rtseq))
- tcp_xmit_timer(tp, tp->t_rtt);
- acked = ti->ti_ack - tp->snd_una;
- sodrop(so, acked);
- tp->snd_una = ti->ti_ack;
- m_free(m);
-
- /*
- * If all outstanding data are acked, stop
- * retransmit timer, otherwise restart timer
- * using current (possibly backed-off) value.
- * If process is waiting for space,
- * wakeup/selwakeup/signal. If data
- * are ready to send, let tcp_output
- * decide between more output or persist.
- */
- if (tp->snd_una == tp->snd_max)
- tp->t_timer[TCPT_REXMT] = 0;
- else if (tp->t_timer[TCPT_PERSIST] == 0)
- tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
-
- /*
- * This is called because sowwakeup might have
- * put data into so_snd. Since we don't so sowwakeup,
- * we don't need this.. XXX???
- */
- if (so->so_snd.sb_cc)
- (void) tcp_output(tp);
-
- return;
- }
- } else if (ti->ti_ack == tp->snd_una &&
- tcpfrag_list_empty(tp) &&
- ti->ti_len <= sbspace(&so->so_rcv)) {
- /*
- * this is a pure, in-sequence data packet
- * with nothing on the reassembly queue and
- * we have enough buffer space to take it.
- */
- tp->rcv_nxt += ti->ti_len;
- /*
- * Add data to socket buffer.
- */
- if (so->so_emu) {
- if (tcp_emu(so,m)) sbappend(so, m);
- } else
- sbappend(so, m);
-
- /*
- * If this is a short packet, then ACK now - with Nagel
- * congestion avoidance sender won't send more until
- * he gets an ACK.
- *
- * It is better to not delay acks at all to maximize
- * TCP throughput. See RFC 2581.
- */
- tp->t_flags |= TF_ACKNOW;
- tcp_output(tp);
- return;
- }
- } /* header prediction */
- /*
- * Calculate amount of space in receive window,
- * and then do TCP input processing.
- * Receive window is amount of space in rcv queue,
- * but not less than advertised window.
- */
- { int win;
- win = sbspace(&so->so_rcv);
- if (win < 0)
- win = 0;
- tp->rcv_wnd = MAX(win, (int)(tp->rcv_adv - tp->rcv_nxt));
- }
-
- switch (tp->t_state) {
-
- /*
- * If the state is LISTEN then ignore segment if it contains an RST.
- * If the segment contains an ACK then it is bad and send a RST.
- * If it does not contain a SYN then it is not interesting; drop it.
- * Don't bother responding if the destination was a broadcast.
- * Otherwise initialize tp->rcv_nxt, and tp->irs, select an initial
- * tp->iss, and send a segment:
- * <SEQ=ISS><ACK=RCV_NXT><CTL=SYN,ACK>
- * Also initialize tp->snd_nxt to tp->iss+1 and tp->snd_una to tp->iss.
- * Fill in remote peer address fields if not previously specified.
- * Enter SYN_RECEIVED state, and process any other fields of this
- * segment in this state.
- */
- case TCPS_LISTEN: {
-
- if (tiflags & TH_RST)
- goto drop;
- if (tiflags & TH_ACK)
- goto dropwithreset;
- if ((tiflags & TH_SYN) == 0)
- goto drop;
-
- /*
- * This has way too many gotos...
- * But a bit of spaghetti code never hurt anybody :)
- */
-
- /*
- * If this is destined for the control address, then flag to
- * tcp_ctl once connected, otherwise connect
- */
- if (af == AF_INET &&
- (so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
- slirp->vnetwork_addr.s_addr) {
- if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr &&
- so->so_faddr.s_addr != slirp->vnameserver_addr.s_addr) {
- /* May be an add exec */
- for (ex_ptr = slirp->guestfwd_list; ex_ptr;
- ex_ptr = ex_ptr->ex_next) {
- if(ex_ptr->ex_fport == so->so_fport &&
- so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) {
- so->so_state |= SS_CTL;
- break;
- }
- }
- if (so->so_state & SS_CTL) {
- goto cont_input;
- }
- }
- /* CTL_ALIAS: Do nothing, tcp_fconnect will be called on it */
- }
-
- if (so->so_emu & EMU_NOCONNECT) {
- so->so_emu &= ~EMU_NOCONNECT;
- goto cont_input;
- }
-
- if ((tcp_fconnect(so, so->so_ffamily) == -1) &&
- (errno != EAGAIN) &&
- (errno != EINPROGRESS) && (errno != EWOULDBLOCK)
- ) {
- uint8_t code;
- DEBUG_MISC(" tcp fconnect errno = %d-%s", errno, strerror(errno));
- if(errno == ECONNREFUSED) {
- /* ACK the SYN, send RST to refuse the connection */
- tcp_respond(tp, ti, m, ti->ti_seq + 1, (tcp_seq) 0,
- TH_RST | TH_ACK, af);
- } else {
- switch (af) {
- case AF_INET:
- code = ICMP_UNREACH_NET;
- if (errno == EHOSTUNREACH) {
- code = ICMP_UNREACH_HOST;
- }
- break;
- case AF_INET6:
- code = ICMP6_UNREACH_NO_ROUTE;
- if (errno == EHOSTUNREACH) {
- code = ICMP6_UNREACH_ADDRESS;
- }
- break;
- default:
- g_assert_not_reached();
- }
- HTONL(ti->ti_seq); /* restore tcp header */
- HTONL(ti->ti_ack);
- HTONS(ti->ti_win);
- HTONS(ti->ti_urp);
- m->m_data -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
- m->m_len += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr);
- switch (af) {
- case AF_INET:
- m->m_data += sizeof(struct tcpiphdr) - sizeof(struct ip)
- - sizeof(struct tcphdr);
- m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct ip)
- - sizeof(struct tcphdr);
- *ip = save_ip;
- icmp_send_error(m, ICMP_UNREACH, code, 0, strerror(errno));
- break;
- case AF_INET6:
- m->m_data += sizeof(struct tcpiphdr) - (sizeof(struct ip6)
- + sizeof(struct tcphdr));
- m->m_len -= sizeof(struct tcpiphdr) - (sizeof(struct ip6)
- + sizeof(struct tcphdr));
- *ip6 = save_ip6;
- icmp6_send_error(m, ICMP6_UNREACH, code);
- break;
- default:
- g_assert_not_reached();
- }
- }
- tcp_close(tp);
- m_free(m);
- } else {
- /*
- * Haven't connected yet, save the current mbuf
- * and ti, and return
- * XXX Some OS's don't tell us whether the connect()
- * succeeded or not. So we must time it out.
- */
- so->so_m = m;
- so->so_ti = ti;
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
- tp->t_state = TCPS_SYN_RECEIVED;
- /*
- * Initialize receive sequence numbers now so that we can send a
- * valid RST if the remote end rejects our connection.
- */
- tp->irs = ti->ti_seq;
- tcp_rcvseqinit(tp);
- tcp_template(tp);
- }
- return;
-
- cont_conn:
- /* m==NULL
- * Check if the connect succeeded
- */
- if (so->so_state & SS_NOFDREF) {
- tp = tcp_close(tp);
- goto dropwithreset;
- }
- cont_input:
- tcp_template(tp);
-
- if (optp)
- tcp_dooptions(tp, (uint8_t *)optp, optlen, ti);
-
- if (iss)
- tp->iss = iss;
- else
- tp->iss = slirp->tcp_iss;
- slirp->tcp_iss += TCP_ISSINCR/2;
- tp->irs = ti->ti_seq;
- tcp_sendseqinit(tp);
- tcp_rcvseqinit(tp);
- tp->t_flags |= TF_ACKNOW;
- tp->t_state = TCPS_SYN_RECEIVED;
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
- goto trimthenstep6;
- } /* case TCPS_LISTEN */
-
- /*
- * If the state is SYN_SENT:
- * if seg contains an ACK, but not for our SYN, drop the input.
- * if seg contains a RST, then drop the connection.
- * if seg does not contain SYN, then drop it.
- * Otherwise this is an acceptable SYN segment
- * initialize tp->rcv_nxt and tp->irs
- * if seg contains ack then advance tp->snd_una
- * if SYN has been acked change to ESTABLISHED else SYN_RCVD state
- * arrange for segment to be acked (eventually)
- * continue processing rest of data/controls, beginning with URG
- */
- case TCPS_SYN_SENT:
- if ((tiflags & TH_ACK) &&
- (SEQ_LEQ(ti->ti_ack, tp->iss) ||
- SEQ_GT(ti->ti_ack, tp->snd_max)))
- goto dropwithreset;
-
- if (tiflags & TH_RST) {
- if (tiflags & TH_ACK) {
- tcp_drop(tp, 0); /* XXX Check t_softerror! */
- }
- goto drop;
- }
-
- if ((tiflags & TH_SYN) == 0)
- goto drop;
- if (tiflags & TH_ACK) {
- tp->snd_una = ti->ti_ack;
- if (SEQ_LT(tp->snd_nxt, tp->snd_una))
- tp->snd_nxt = tp->snd_una;
- }
-
- tp->t_timer[TCPT_REXMT] = 0;
- tp->irs = ti->ti_seq;
- tcp_rcvseqinit(tp);
- tp->t_flags |= TF_ACKNOW;
- if (tiflags & TH_ACK && SEQ_GT(tp->snd_una, tp->iss)) {
- soisfconnected(so);
- tp->t_state = TCPS_ESTABLISHED;
-
- (void) tcp_reass(tp, (struct tcpiphdr *)0,
- (struct mbuf *)0);
- /*
- * if we didn't have to retransmit the SYN,
- * use its rtt as our initial srtt & rtt var.
- */
- if (tp->t_rtt)
- tcp_xmit_timer(tp, tp->t_rtt);
- } else
- tp->t_state = TCPS_SYN_RECEIVED;
-
-trimthenstep6:
- /*
- * Advance ti->ti_seq to correspond to first data byte.
- * If data, trim to stay within window,
- * dropping FIN if necessary.
- */
- ti->ti_seq++;
- if (ti->ti_len > tp->rcv_wnd) {
- todrop = ti->ti_len - tp->rcv_wnd;
- m_adj(m, -todrop);
- ti->ti_len = tp->rcv_wnd;
- tiflags &= ~TH_FIN;
- }
- tp->snd_wl1 = ti->ti_seq - 1;
- tp->rcv_up = ti->ti_seq;
- goto step6;
- } /* switch tp->t_state */
- /*
- * States other than LISTEN or SYN_SENT.
- * Check that at least some bytes of segment are within
- * receive window. If segment begins before rcv_nxt,
- * drop leading data (and SYN); if nothing left, just ack.
- */
- todrop = tp->rcv_nxt - ti->ti_seq;
- if (todrop > 0) {
- if (tiflags & TH_SYN) {
- tiflags &= ~TH_SYN;
- ti->ti_seq++;
- if (ti->ti_urp > 1)
- ti->ti_urp--;
- else
- tiflags &= ~TH_URG;
- todrop--;
- }
- /*
- * Following if statement from Stevens, vol. 2, p. 960.
- */
- if (todrop > ti->ti_len
- || (todrop == ti->ti_len && (tiflags & TH_FIN) == 0)) {
- /*
- * Any valid FIN must be to the left of the window.
- * At this point the FIN must be a duplicate or out
- * of sequence; drop it.
- */
- tiflags &= ~TH_FIN;
-
- /*
- * Send an ACK to resynchronize and drop any data.
- * But keep on processing for RST or ACK.
- */
- tp->t_flags |= TF_ACKNOW;
- todrop = ti->ti_len;
- }
- m_adj(m, todrop);
- ti->ti_seq += todrop;
- ti->ti_len -= todrop;
- if (ti->ti_urp > todrop)
- ti->ti_urp -= todrop;
- else {
- tiflags &= ~TH_URG;
- ti->ti_urp = 0;
- }
- }
- /*
- * If new data are received on a connection after the
- * user processes are gone, then RST the other end.
- */
- if ((so->so_state & SS_NOFDREF) &&
- tp->t_state > TCPS_CLOSE_WAIT && ti->ti_len) {
- tp = tcp_close(tp);
- goto dropwithreset;
- }
-
- /*
- * If segment ends after window, drop trailing data
- * (and PUSH and FIN); if nothing left, just ACK.
- */
- todrop = (ti->ti_seq+ti->ti_len) - (tp->rcv_nxt+tp->rcv_wnd);
- if (todrop > 0) {
- if (todrop >= ti->ti_len) {
- /*
- * If a new connection request is received
- * while in TIME_WAIT, drop the old connection
- * and start over if the sequence numbers
- * are above the previous ones.
- */
- if (tiflags & TH_SYN &&
- tp->t_state == TCPS_TIME_WAIT &&
- SEQ_GT(ti->ti_seq, tp->rcv_nxt)) {
- iss = tp->rcv_nxt + TCP_ISSINCR;
- tp = tcp_close(tp);
- goto findso;
- }
- /*
- * If window is closed can only take segments at
- * window edge, and have to drop data and PUSH from
- * incoming segments. Continue processing, but
- * remember to ack. Otherwise, drop segment
- * and ack.
- */
- if (tp->rcv_wnd == 0 && ti->ti_seq == tp->rcv_nxt) {
- tp->t_flags |= TF_ACKNOW;
- } else {
- goto dropafterack;
- }
- }
- m_adj(m, -todrop);
- ti->ti_len -= todrop;
- tiflags &= ~(TH_PUSH|TH_FIN);
- }
-
- /*
- * If the RST bit is set examine the state:
- * SYN_RECEIVED STATE:
- * If passive open, return to LISTEN state.
- * If active open, inform user that connection was refused.
- * ESTABLISHED, FIN_WAIT_1, FIN_WAIT2, CLOSE_WAIT STATES:
- * Inform user that connection was reset, and close tcb.
- * CLOSING, LAST_ACK, TIME_WAIT STATES
- * Close the tcb.
- */
- if (tiflags&TH_RST) switch (tp->t_state) {
-
- case TCPS_SYN_RECEIVED:
- case TCPS_ESTABLISHED:
- case TCPS_FIN_WAIT_1:
- case TCPS_FIN_WAIT_2:
- case TCPS_CLOSE_WAIT:
- tp->t_state = TCPS_CLOSED;
- tcp_close(tp);
- goto drop;
-
- case TCPS_CLOSING:
- case TCPS_LAST_ACK:
- case TCPS_TIME_WAIT:
- tcp_close(tp);
- goto drop;
- }
-
- /*
- * If a SYN is in the window, then this is an
- * error and we send an RST and drop the connection.
- */
- if (tiflags & TH_SYN) {
- tp = tcp_drop(tp,0);
- goto dropwithreset;
- }
-
- /*
- * If the ACK bit is off we drop the segment and return.
- */
- if ((tiflags & TH_ACK) == 0) goto drop;
-
- /*
- * Ack processing.
- */
- switch (tp->t_state) {
- /*
- * In SYN_RECEIVED state if the ack ACKs our SYN then enter
- * ESTABLISHED state and continue processing, otherwise
- * send an RST. una<=ack<=max
- */
- case TCPS_SYN_RECEIVED:
-
- if (SEQ_GT(tp->snd_una, ti->ti_ack) ||
- SEQ_GT(ti->ti_ack, tp->snd_max))
- goto dropwithreset;
- tp->t_state = TCPS_ESTABLISHED;
- /*
- * The sent SYN is ack'ed with our sequence number +1
- * The first data byte already in the buffer will get
- * lost if no correction is made. This is only needed for
- * SS_CTL since the buffer is empty otherwise.
- * tp->snd_una++; or:
- */
- tp->snd_una=ti->ti_ack;
- if (so->so_state & SS_CTL) {
- /* So tcp_ctl reports the right state */
- ret = tcp_ctl(so);
- if (ret == 1) {
- soisfconnected(so);
- so->so_state &= ~SS_CTL; /* success XXX */
- } else if (ret == 2) {
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_NOFDREF; /* CTL_CMD */
- } else {
- needoutput = 1;
- tp->t_state = TCPS_FIN_WAIT_1;
- }
- } else {
- soisfconnected(so);
- }
-
- (void) tcp_reass(tp, (struct tcpiphdr *)0, (struct mbuf *)0);
- tp->snd_wl1 = ti->ti_seq - 1;
- /* Avoid ack processing; snd_una==ti_ack => dup ack */
- goto synrx_to_est;
- /* fall into ... */
-
- /*
- * In ESTABLISHED state: drop duplicate ACKs; ACK out of range
- * ACKs. If the ack is in the range
- * tp->snd_una < ti->ti_ack <= tp->snd_max
- * then advance tp->snd_una to ti->ti_ack and drop
- * data from the retransmission queue. If this ACK reflects
- * more up to date window information we update our window information.
- */
- case TCPS_ESTABLISHED:
- case TCPS_FIN_WAIT_1:
- case TCPS_FIN_WAIT_2:
- case TCPS_CLOSE_WAIT:
- case TCPS_CLOSING:
- case TCPS_LAST_ACK:
- case TCPS_TIME_WAIT:
-
- if (SEQ_LEQ(ti->ti_ack, tp->snd_una)) {
- if (ti->ti_len == 0 && tiwin == tp->snd_wnd) {
- DEBUG_MISC(" dup ack m = %p so = %p", m, so);
- /*
- * If we have outstanding data (other than
- * a window probe), this is a completely
- * duplicate ack (ie, window info didn't
- * change), the ack is the biggest we've
- * seen and we've seen exactly our rexmt
- * threshold of them, assume a packet
- * has been dropped and retransmit it.
- * Kludge snd_nxt & the congestion
- * window so we send only this one
- * packet.
- *
- * We know we're losing at the current
- * window size so do congestion avoidance
- * (set ssthresh to half the current window
- * and pull our congestion window back to
- * the new ssthresh).
- *
- * Dup acks mean that packets have left the
- * network (they're now cached at the receiver)
- * so bump cwnd by the amount in the receiver
- * to keep a constant cwnd packets in the
- * network.
- */
- if (tp->t_timer[TCPT_REXMT] == 0 ||
- ti->ti_ack != tp->snd_una)
- tp->t_dupacks = 0;
- else if (++tp->t_dupacks == TCPREXMTTHRESH) {
- tcp_seq onxt = tp->snd_nxt;
- unsigned win =
- MIN(tp->snd_wnd, tp->snd_cwnd) /
- 2 / tp->t_maxseg;
-
- if (win < 2)
- win = 2;
- tp->snd_ssthresh = win * tp->t_maxseg;
- tp->t_timer[TCPT_REXMT] = 0;
- tp->t_rtt = 0;
- tp->snd_nxt = ti->ti_ack;
- tp->snd_cwnd = tp->t_maxseg;
- (void) tcp_output(tp);
- tp->snd_cwnd = tp->snd_ssthresh +
- tp->t_maxseg * tp->t_dupacks;
- if (SEQ_GT(onxt, tp->snd_nxt))
- tp->snd_nxt = onxt;
- goto drop;
- } else if (tp->t_dupacks > TCPREXMTTHRESH) {
- tp->snd_cwnd += tp->t_maxseg;
- (void) tcp_output(tp);
- goto drop;
- }
- } else
- tp->t_dupacks = 0;
- break;
- }
- synrx_to_est:
- /*
- * If the congestion window was inflated to account
- * for the other side's cached packets, retract it.
- */
- if (tp->t_dupacks > TCPREXMTTHRESH &&
- tp->snd_cwnd > tp->snd_ssthresh)
- tp->snd_cwnd = tp->snd_ssthresh;
- tp->t_dupacks = 0;
- if (SEQ_GT(ti->ti_ack, tp->snd_max)) {
- goto dropafterack;
- }
- acked = ti->ti_ack - tp->snd_una;
-
- /*
- * If transmit timer is running and timed sequence
- * number was acked, update smoothed round trip time.
- * Since we now have an rtt measurement, cancel the
- * timer backoff (cf., Phil Karn's retransmit alg.).
- * Recompute the initial retransmit timer.
- */
- if (tp->t_rtt && SEQ_GT(ti->ti_ack, tp->t_rtseq))
- tcp_xmit_timer(tp,tp->t_rtt);
-
- /*
- * If all outstanding data is acked, stop retransmit
- * timer and remember to restart (more output or persist).
- * If there is more data to be acked, restart retransmit
- * timer, using current (possibly backed-off) value.
- */
- if (ti->ti_ack == tp->snd_max) {
- tp->t_timer[TCPT_REXMT] = 0;
- needoutput = 1;
- } else if (tp->t_timer[TCPT_PERSIST] == 0)
- tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
- /*
- * When new data is acked, open the congestion window.
- * If the window gives us less than ssthresh packets
- * in flight, open exponentially (maxseg per packet).
- * Otherwise open linearly: maxseg per window
- * (maxseg^2 / cwnd per packet).
- */
- {
- register unsigned cw = tp->snd_cwnd;
- register unsigned incr = tp->t_maxseg;
-
- if (cw > tp->snd_ssthresh)
- incr = incr * incr / cw;
- tp->snd_cwnd = MIN(cw + incr, TCP_MAXWIN << tp->snd_scale);
- }
- if (acked > so->so_snd.sb_cc) {
- tp->snd_wnd -= so->so_snd.sb_cc;
- sodrop(so, (int)so->so_snd.sb_cc);
- ourfinisacked = 1;
- } else {
- sodrop(so, acked);
- tp->snd_wnd -= acked;
- ourfinisacked = 0;
- }
- tp->snd_una = ti->ti_ack;
- if (SEQ_LT(tp->snd_nxt, tp->snd_una))
- tp->snd_nxt = tp->snd_una;
-
- switch (tp->t_state) {
-
- /*
- * In FIN_WAIT_1 STATE in addition to the processing
- * for the ESTABLISHED state if our FIN is now acknowledged
- * then enter FIN_WAIT_2.
- */
- case TCPS_FIN_WAIT_1:
- if (ourfinisacked) {
- /*
- * If we can't receive any more
- * data, then closing user can proceed.
- * Starting the timer is contrary to the
- * specification, but if we don't get a FIN
- * we'll hang forever.
- */
- if (so->so_state & SS_FCANTRCVMORE) {
- tp->t_timer[TCPT_2MSL] = TCP_MAXIDLE;
- }
- tp->t_state = TCPS_FIN_WAIT_2;
- }
- break;
-
- /*
- * In CLOSING STATE in addition to the processing for
- * the ESTABLISHED state if the ACK acknowledges our FIN
- * then enter the TIME-WAIT state, otherwise ignore
- * the segment.
- */
- case TCPS_CLOSING:
- if (ourfinisacked) {
- tp->t_state = TCPS_TIME_WAIT;
- tcp_canceltimers(tp);
- tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
- }
- break;
-
- /*
- * In LAST_ACK, we may still be waiting for data to drain
- * and/or to be acked, as well as for the ack of our FIN.
- * If our FIN is now acknowledged, delete the TCB,
- * enter the closed state and return.
- */
- case TCPS_LAST_ACK:
- if (ourfinisacked) {
- tcp_close(tp);
- goto drop;
- }
- break;
-
- /*
- * In TIME_WAIT state the only thing that should arrive
- * is a retransmission of the remote FIN. Acknowledge
- * it and restart the finack timer.
- */
- case TCPS_TIME_WAIT:
- tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
- goto dropafterack;
- }
- } /* switch(tp->t_state) */
-
-step6:
- /*
- * Update window information.
- * Don't look at window if no ACK: TAC's send garbage on first SYN.
- */
- if ((tiflags & TH_ACK) &&
- (SEQ_LT(tp->snd_wl1, ti->ti_seq) ||
- (tp->snd_wl1 == ti->ti_seq && (SEQ_LT(tp->snd_wl2, ti->ti_ack) ||
- (tp->snd_wl2 == ti->ti_ack && tiwin > tp->snd_wnd))))) {
- tp->snd_wnd = tiwin;
- tp->snd_wl1 = ti->ti_seq;
- tp->snd_wl2 = ti->ti_ack;
- if (tp->snd_wnd > tp->max_sndwnd)
- tp->max_sndwnd = tp->snd_wnd;
- needoutput = 1;
- }
-
- /*
- * Process segments with URG.
- */
- if ((tiflags & TH_URG) && ti->ti_urp &&
- TCPS_HAVERCVDFIN(tp->t_state) == 0) {
- /*
- * This is a kludge, but if we receive and accept
- * random urgent pointers, we'll crash in
- * soreceive. It's hard to imagine someone
- * actually wanting to send this much urgent data.
- */
- if (ti->ti_urp + so->so_rcv.sb_cc > so->so_rcv.sb_datalen) {
- ti->ti_urp = 0;
- tiflags &= ~TH_URG;
- goto dodata;
- }
- /*
- * If this segment advances the known urgent pointer,
- * then mark the data stream. This should not happen
- * in CLOSE_WAIT, CLOSING, LAST_ACK or TIME_WAIT STATES since
- * a FIN has been received from the remote side.
- * In these states we ignore the URG.
- *
- * According to RFC961 (Assigned Protocols),
- * the urgent pointer points to the last octet
- * of urgent data. We continue, however,
- * to consider it to indicate the first octet
- * of data past the urgent section as the original
- * spec states (in one of two places).
- */
- if (SEQ_GT(ti->ti_seq+ti->ti_urp, tp->rcv_up)) {
- tp->rcv_up = ti->ti_seq + ti->ti_urp;
- so->so_urgc = so->so_rcv.sb_cc +
- (tp->rcv_up - tp->rcv_nxt); /* -1; */
- tp->rcv_up = ti->ti_seq + ti->ti_urp;
-
- }
- } else
- /*
- * If no out of band data is expected,
- * pull receive urgent pointer along
- * with the receive window.
- */
- if (SEQ_GT(tp->rcv_nxt, tp->rcv_up))
- tp->rcv_up = tp->rcv_nxt;
-dodata:
-
- /*
- * If this is a small packet, then ACK now - with Nagel
- * congestion avoidance sender won't send more until
- * he gets an ACK.
- */
- if (ti->ti_len && (unsigned)ti->ti_len <= 5 &&
- ((struct tcpiphdr_2 *)ti)->first_char == (char)27) {
- tp->t_flags |= TF_ACKNOW;
- }
-
- /*
- * Process the segment text, merging it into the TCP sequencing queue,
- * and arranging for acknowledgment of receipt if necessary.
- * This process logically involves adjusting tp->rcv_wnd as data
- * is presented to the user (this happens in tcp_usrreq.c,
- * case PRU_RCVD). If a FIN has already been received on this
- * connection then we just ignore the text.
- */
- if ((ti->ti_len || (tiflags&TH_FIN)) &&
- TCPS_HAVERCVDFIN(tp->t_state) == 0) {
- TCP_REASS(tp, ti, m, so, tiflags);
- } else {
- m_free(m);
- tiflags &= ~TH_FIN;
- }
-
- /*
- * If FIN is received ACK the FIN and let the user know
- * that the connection is closing.
- */
- if (tiflags & TH_FIN) {
- if (TCPS_HAVERCVDFIN(tp->t_state) == 0) {
- /*
- * If we receive a FIN we can't send more data,
- * set it SS_FDRAIN
- * Shutdown the socket if there is no rx data in the
- * buffer.
- * soread() is called on completion of shutdown() and
- * will got to TCPS_LAST_ACK, and use tcp_output()
- * to send the FIN.
- */
- sofwdrain(so);
-
- tp->t_flags |= TF_ACKNOW;
- tp->rcv_nxt++;
- }
- switch (tp->t_state) {
-
- /*
- * In SYN_RECEIVED and ESTABLISHED STATES
- * enter the CLOSE_WAIT state.
- */
- case TCPS_SYN_RECEIVED:
- case TCPS_ESTABLISHED:
- if(so->so_emu == EMU_CTL) /* no shutdown on socket */
- tp->t_state = TCPS_LAST_ACK;
- else
- tp->t_state = TCPS_CLOSE_WAIT;
- break;
-
- /*
- * If still in FIN_WAIT_1 STATE FIN has not been acked so
- * enter the CLOSING state.
- */
- case TCPS_FIN_WAIT_1:
- tp->t_state = TCPS_CLOSING;
- break;
-
- /*
- * In FIN_WAIT_2 state enter the TIME_WAIT state,
- * starting the time-wait timer, turning off the other
- * standard timers.
- */
- case TCPS_FIN_WAIT_2:
- tp->t_state = TCPS_TIME_WAIT;
- tcp_canceltimers(tp);
- tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
- break;
-
- /*
- * In TIME_WAIT state restart the 2 MSL time_wait timer.
- */
- case TCPS_TIME_WAIT:
- tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL;
- break;
- }
- }
-
- /*
- * Return any desired output.
- */
- if (needoutput || (tp->t_flags & TF_ACKNOW)) {
- (void) tcp_output(tp);
- }
- return;
-
-dropafterack:
- /*
- * Generate an ACK dropping incoming segment if it occupies
- * sequence space, where the ACK reflects our state.
- */
- if (tiflags & TH_RST)
- goto drop;
- m_free(m);
- tp->t_flags |= TF_ACKNOW;
- (void) tcp_output(tp);
- return;
-
-dropwithreset:
- /* reuses m if m!=NULL, m_free() unnecessary */
- if (tiflags & TH_ACK)
- tcp_respond(tp, ti, m, (tcp_seq)0, ti->ti_ack, TH_RST, af);
- else {
- if (tiflags & TH_SYN) ti->ti_len++;
- tcp_respond(tp, ti, m, ti->ti_seq + ti->ti_len, (tcp_seq) 0,
- TH_RST | TH_ACK, af);
- }
-
- return;
-
-drop:
- /*
- * Drop space held by incoming segment and return.
- */
- m_free(m);
-}
-
-static void
-tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt, struct tcpiphdr *ti)
-{
- uint16_t mss;
- int opt, optlen;
-
- DEBUG_CALL("tcp_dooptions");
- DEBUG_ARG("tp = %p cnt=%i", tp, cnt);
-
- for (; cnt > 0; cnt -= optlen, cp += optlen) {
- opt = cp[0];
- if (opt == TCPOPT_EOL)
- break;
- if (opt == TCPOPT_NOP)
- optlen = 1;
- else {
- optlen = cp[1];
- if (optlen <= 0)
- break;
- }
- switch (opt) {
-
- default:
- continue;
-
- case TCPOPT_MAXSEG:
- if (optlen != TCPOLEN_MAXSEG)
- continue;
- if (!(ti->ti_flags & TH_SYN))
- continue;
- memcpy((char *) &mss, (char *) cp + 2, sizeof(mss));
- NTOHS(mss);
- (void) tcp_mss(tp, mss); /* sets t_maxseg */
- break;
- }
- }
-}
-
-/*
- * Collect new round-trip time estimate
- * and update averages and current timeout.
- */
-
-static void
-tcp_xmit_timer(register struct tcpcb *tp, int rtt)
-{
- register short delta;
-
- DEBUG_CALL("tcp_xmit_timer");
- DEBUG_ARG("tp = %p", tp);
- DEBUG_ARG("rtt = %d", rtt);
-
- if (tp->t_srtt != 0) {
- /*
- * srtt is stored as fixed point with 3 bits after the
- * binary point (i.e., scaled by 8). The following magic
- * is equivalent to the smoothing algorithm in rfc793 with
- * an alpha of .875 (srtt = rtt/8 + srtt*7/8 in fixed
- * point). Adjust rtt to origin 0.
- */
- delta = rtt - 1 - (tp->t_srtt >> TCP_RTT_SHIFT);
- if ((tp->t_srtt += delta) <= 0)
- tp->t_srtt = 1;
- /*
- * We accumulate a smoothed rtt variance (actually, a
- * smoothed mean difference), then set the retransmit
- * timer to smoothed rtt + 4 times the smoothed variance.
- * rttvar is stored as fixed point with 2 bits after the
- * binary point (scaled by 4). The following is
- * equivalent to rfc793 smoothing with an alpha of .75
- * (rttvar = rttvar*3/4 + |delta| / 4). This replaces
- * rfc793's wired-in beta.
- */
- if (delta < 0)
- delta = -delta;
- delta -= (tp->t_rttvar >> TCP_RTTVAR_SHIFT);
- if ((tp->t_rttvar += delta) <= 0)
- tp->t_rttvar = 1;
- } else {
- /*
- * No rtt measurement yet - use the unsmoothed rtt.
- * Set the variance to half the rtt (so our first
- * retransmit happens at 3*rtt).
- */
- tp->t_srtt = rtt << TCP_RTT_SHIFT;
- tp->t_rttvar = rtt << (TCP_RTTVAR_SHIFT - 1);
- }
- tp->t_rtt = 0;
- tp->t_rxtshift = 0;
-
- /*
- * the retransmit should happen at rtt + 4 * rttvar.
- * Because of the way we do the smoothing, srtt and rttvar
- * will each average +1/2 tick of bias. When we compute
- * the retransmit timer, we want 1/2 tick of rounding and
- * 1 extra tick because of +-1/2 tick uncertainty in the
- * firing of the timer. The bias will give us exactly the
- * 1.5 tick we need. But, because the bias is
- * statistical, we have to test that we don't drop below
- * the minimum feasible timer (which is 2 ticks).
- */
- TCPT_RANGESET(tp->t_rxtcur, TCP_REXMTVAL(tp),
- (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */
-
- /*
- * We received an ack for a packet that wasn't retransmitted;
- * it is probably safe to discard any error indications we've
- * received recently. This isn't quite right, but close enough
- * for now (a route might have failed after we sent a segment,
- * and the return path might not be symmetrical).
- */
- tp->t_softerror = 0;
-}
-
-/*
- * Determine a reasonable value for maxseg size.
- * If the route is known, check route for mtu.
- * If none, use an mss that can be handled on the outgoing
- * interface without forcing IP to fragment; if bigger than
- * an mbuf cluster (MCLBYTES), round down to nearest multiple of MCLBYTES
- * to utilize large mbufs. If no route is found, route has no mtu,
- * or the destination isn't local, use a default, hopefully conservative
- * size (usually 512 or the default IP max size, but no more than the mtu
- * of the interface), as we can't discover anything about intervening
- * gateways or networks. We also initialize the congestion/slow start
- * window to be a single segment if the destination isn't local.
- * While looking at the routing entry, we also initialize other path-dependent
- * parameters from pre-set or cached values in the routing entry.
- */
-
-int
-tcp_mss(struct tcpcb *tp, unsigned offer)
-{
- struct socket *so = tp->t_socket;
- int mss;
-
- DEBUG_CALL("tcp_mss");
- DEBUG_ARG("tp = %p", tp);
- DEBUG_ARG("offer = %d", offer);
-
- switch (so->so_ffamily) {
- case AF_INET:
- mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr)
- - sizeof(struct ip);
- break;
- case AF_INET6:
- mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr)
- - sizeof(struct ip6);
- break;
- default:
- g_assert_not_reached();
- }
-
- if (offer)
- mss = MIN(mss, offer);
- mss = MAX(mss, 32);
- if (mss < tp->t_maxseg || offer != 0)
- tp->t_maxseg = mss;
-
- tp->snd_cwnd = mss;
-
- sbreserve(&so->so_snd, TCP_SNDSPACE + ((TCP_SNDSPACE % mss) ?
- (mss - (TCP_SNDSPACE % mss)) :
- 0));
- sbreserve(&so->so_rcv, TCP_RCVSPACE + ((TCP_RCVSPACE % mss) ?
- (mss - (TCP_RCVSPACE % mss)) :
- 0));
-
- DEBUG_MISC(" returning mss = %d", mss);
-
- return mss;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_output.c 8.3 (Berkeley) 12/30/93
- * tcp_output.c,v 1.3 1994/09/15 10:36:55 davidg Exp
- */
-
-/*
- * Changes and additions relating to SLiRP
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-static const uint8_t tcp_outflags[TCP_NSTATES] = {
- TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK,
- TH_ACK, TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK,
- TH_FIN|TH_ACK, TH_ACK, TH_ACK,
-};
-
-
-#undef MAX_TCPOPTLEN
-#define MAX_TCPOPTLEN 32 /* max # bytes that go in options */
-
-/*
- * Tcp output routine: figure out what should be sent and send it.
- */
-int
-tcp_output(struct tcpcb *tp)
-{
- register struct socket *so = tp->t_socket;
- register long len, win;
- int off, flags, error;
- register struct mbuf *m;
- register struct tcpiphdr *ti, tcpiph_save;
- struct ip *ip;
- struct ip6 *ip6;
- uint8_t opt[MAX_TCPOPTLEN];
- unsigned optlen, hdrlen;
- int idle, sendalot;
-
- DEBUG_CALL("tcp_output");
- DEBUG_ARG("tp = %p", tp);
-
- /*
- * Determine length of data that should be transmitted,
- * and flags that will be used.
- * If there is some data or critical controls (SYN, RST)
- * to send, then transmit; otherwise, investigate further.
- */
- idle = (tp->snd_max == tp->snd_una);
- if (idle && tp->t_idle >= tp->t_rxtcur)
- /*
- * We have been idle for "a while" and no acks are
- * expected to clock out any data we send --
- * slow start to get ack "clock" running again.
- */
- tp->snd_cwnd = tp->t_maxseg;
-again:
- sendalot = 0;
- off = tp->snd_nxt - tp->snd_una;
- win = MIN(tp->snd_wnd, tp->snd_cwnd);
-
- flags = tcp_outflags[tp->t_state];
-
- DEBUG_MISC(" --- tcp_output flags = 0x%x", flags);
-
- /*
- * If in persist timeout with window of 0, send 1 byte.
- * Otherwise, if window is small but nonzero
- * and timer expired, we will send what we can
- * and go to transmit state.
- */
- if (tp->t_force) {
- if (win == 0) {
- /*
- * If we still have some data to send, then
- * clear the FIN bit. Usually this would
- * happen below when it realizes that we
- * aren't sending all the data. However,
- * if we have exactly 1 byte of unset data,
- * then it won't clear the FIN bit below,
- * and if we are in persist state, we wind
- * up sending the packet without recording
- * that we sent the FIN bit.
- *
- * We can't just blindly clear the FIN bit,
- * because if we don't have any more data
- * to send then the probe will be the FIN
- * itself.
- */
- if (off < so->so_snd.sb_cc)
- flags &= ~TH_FIN;
- win = 1;
- } else {
- tp->t_timer[TCPT_PERSIST] = 0;
- tp->t_rxtshift = 0;
- }
- }
-
- len = MIN(so->so_snd.sb_cc, win) - off;
-
- if (len < 0) {
- /*
- * If FIN has been sent but not acked,
- * but we haven't been called to retransmit,
- * len will be -1. Otherwise, window shrank
- * after we sent into it. If window shrank to 0,
- * cancel pending retransmit and pull snd_nxt
- * back to (closed) window. We will enter persist
- * state below. If the window didn't close completely,
- * just wait for an ACK.
- */
- len = 0;
- if (win == 0) {
- tp->t_timer[TCPT_REXMT] = 0;
- tp->snd_nxt = tp->snd_una;
- }
- }
-
- if (len > tp->t_maxseg) {
- len = tp->t_maxseg;
- sendalot = 1;
- }
- if (SEQ_LT(tp->snd_nxt + len, tp->snd_una + so->so_snd.sb_cc))
- flags &= ~TH_FIN;
-
- win = sbspace(&so->so_rcv);
-
- /*
- * Sender silly window avoidance. If connection is idle
- * and can send all data, a maximum segment,
- * at least a maximum default-size segment do it,
- * or are forced, do it; otherwise don't bother.
- * If peer's buffer is tiny, then send
- * when window is at least half open.
- * If retransmitting (possibly after persist timer forced us
- * to send into a small window), then must resend.
- */
- if (len) {
- if (len == tp->t_maxseg)
- goto send;
- if ((1 || idle || tp->t_flags & TF_NODELAY) &&
- len + off >= so->so_snd.sb_cc)
- goto send;
- if (tp->t_force)
- goto send;
- if (len >= tp->max_sndwnd / 2 && tp->max_sndwnd > 0)
- goto send;
- if (SEQ_LT(tp->snd_nxt, tp->snd_max))
- goto send;
- }
-
- /*
- * Compare available window to amount of window
- * known to peer (as advertised window less
- * next expected input). If the difference is at least two
- * max size segments, or at least 50% of the maximum possible
- * window, then want to send a window update to peer.
- */
- if (win > 0) {
- /*
- * "adv" is the amount we can increase the window,
- * taking into account that we are limited by
- * TCP_MAXWIN << tp->rcv_scale.
- */
- long adv = MIN(win, (long)TCP_MAXWIN << tp->rcv_scale) -
- (tp->rcv_adv - tp->rcv_nxt);
-
- if (adv >= (long) (2 * tp->t_maxseg))
- goto send;
- if (2 * adv >= (long) so->so_rcv.sb_datalen)
- goto send;
- }
-
- /*
- * Send if we owe peer an ACK.
- */
- if (tp->t_flags & TF_ACKNOW)
- goto send;
- if (flags & (TH_SYN|TH_RST))
- goto send;
- if (SEQ_GT(tp->snd_up, tp->snd_una))
- goto send;
- /*
- * If our state indicates that FIN should be sent
- * and we have not yet done so, or we're retransmitting the FIN,
- * then we need to send.
- */
- if (flags & TH_FIN &&
- ((tp->t_flags & TF_SENTFIN) == 0 || tp->snd_nxt == tp->snd_una))
- goto send;
-
- /*
- * TCP window updates are not reliable, rather a polling protocol
- * using ``persist'' packets is used to insure receipt of window
- * updates. The three ``states'' for the output side are:
- * idle not doing retransmits or persists
- * persisting to move a small or zero window
- * (re)transmitting and thereby not persisting
- *
- * tp->t_timer[TCPT_PERSIST]
- * is set when we are in persist state.
- * tp->t_force
- * is set when we are called to send a persist packet.
- * tp->t_timer[TCPT_REXMT]
- * is set when we are retransmitting
- * The output side is idle when both timers are zero.
- *
- * If send window is too small, there is data to transmit, and no
- * retransmit or persist is pending, then go to persist state.
- * If nothing happens soon, send when timer expires:
- * if window is nonzero, transmit what we can,
- * otherwise force out a byte.
- */
- if (so->so_snd.sb_cc && tp->t_timer[TCPT_REXMT] == 0 &&
- tp->t_timer[TCPT_PERSIST] == 0) {
- tp->t_rxtshift = 0;
- tcp_setpersist(tp);
- }
-
- /*
- * No reason to send a segment, just return.
- */
- return (0);
-
-send:
- /*
- * Before ESTABLISHED, force sending of initial options
- * unless TCP set not to do any options.
- * NOTE: we assume that the IP/TCP header plus TCP options
- * always fit in a single mbuf, leaving room for a maximum
- * link header, i.e.
- * max_linkhdr + sizeof (struct tcpiphdr) + optlen <= MHLEN
- */
- optlen = 0;
- hdrlen = sizeof (struct tcpiphdr);
- if (flags & TH_SYN) {
- tp->snd_nxt = tp->iss;
- if ((tp->t_flags & TF_NOOPT) == 0) {
- uint16_t mss;
-
- opt[0] = TCPOPT_MAXSEG;
- opt[1] = 4;
- mss = htons((uint16_t) tcp_mss(tp, 0));
- memcpy((char *)(opt + 2), (char *)&mss, sizeof(mss));
- optlen = 4;
- }
- }
-
- hdrlen += optlen;
-
- /*
- * Adjust data length if insertion of options will
- * bump the packet length beyond the t_maxseg length.
- */
- if (len > tp->t_maxseg - optlen) {
- len = tp->t_maxseg - optlen;
- sendalot = 1;
- }
-
- /*
- * Grab a header mbuf, attaching a copy of data to
- * be transmitted, and initialize the header from
- * the template for sends on this connection.
- */
- if (len) {
- m = m_get(so->slirp);
- if (m == NULL) {
- error = 1;
- goto out;
- }
- m->m_data += IF_MAXLINKHDR;
- m->m_len = hdrlen;
-
- sbcopy(&so->so_snd, off, (int) len, mtod(m, char *) + hdrlen);
- m->m_len += len;
-
- /*
- * If we're sending everything we've got, set PUSH.
- * (This will keep happy those implementations which only
- * give data to the user when a buffer fills or
- * a PUSH comes in.)
- */
- if (off + len == so->so_snd.sb_cc)
- flags |= TH_PUSH;
- } else {
- m = m_get(so->slirp);
- if (m == NULL) {
- error = 1;
- goto out;
- }
- m->m_data += IF_MAXLINKHDR;
- m->m_len = hdrlen;
- }
-
- ti = mtod(m, struct tcpiphdr *);
-
- memcpy((char *)ti, &tp->t_template, sizeof (struct tcpiphdr));
-
- /*
- * Fill in fields, remembering maximum advertised
- * window for use in delaying messages about window sizes.
- * If resending a FIN, be sure not to use a new sequence number.
- */
- if (flags & TH_FIN && tp->t_flags & TF_SENTFIN &&
- tp->snd_nxt == tp->snd_max)
- tp->snd_nxt--;
- /*
- * If we are doing retransmissions, then snd_nxt will
- * not reflect the first unsent octet. For ACK only
- * packets, we do not want the sequence number of the
- * retransmitted packet, we want the sequence number
- * of the next unsent octet. So, if there is no data
- * (and no SYN or FIN), use snd_max instead of snd_nxt
- * when filling in ti_seq. But if we are in persist
- * state, snd_max might reflect one byte beyond the
- * right edge of the window, so use snd_nxt in that
- * case, since we know we aren't doing a retransmission.
- * (retransmit and persist are mutually exclusive...)
- */
- if (len || (flags & (TH_SYN|TH_FIN)) || tp->t_timer[TCPT_PERSIST])
- ti->ti_seq = htonl(tp->snd_nxt);
- else
- ti->ti_seq = htonl(tp->snd_max);
- ti->ti_ack = htonl(tp->rcv_nxt);
- if (optlen) {
- memcpy((char *)(ti + 1), (char *)opt, optlen);
- ti->ti_off = (sizeof (struct tcphdr) + optlen) >> 2;
- }
- ti->ti_flags = flags;
- /*
- * Calculate receive window. Don't shrink window,
- * but avoid silly window syndrome.
- */
- if (win < (long)(so->so_rcv.sb_datalen / 4) && win < (long)tp->t_maxseg)
- win = 0;
- if (win > (long)TCP_MAXWIN << tp->rcv_scale)
- win = (long)TCP_MAXWIN << tp->rcv_scale;
- if (win < (long)(tp->rcv_adv - tp->rcv_nxt))
- win = (long)(tp->rcv_adv - tp->rcv_nxt);
- ti->ti_win = htons((uint16_t) (win>>tp->rcv_scale));
-
- if (SEQ_GT(tp->snd_up, tp->snd_una)) {
- ti->ti_urp = htons((uint16_t)(tp->snd_up - ntohl(ti->ti_seq)));
- ti->ti_flags |= TH_URG;
- } else
- /*
- * If no urgent pointer to send, then we pull
- * the urgent pointer to the left edge of the send window
- * so that it doesn't drift into the send window on sequence
- * number wraparound.
- */
- tp->snd_up = tp->snd_una; /* drag it along */
-
- /*
- * Put TCP length in extended header, and then
- * checksum extended header and data.
- */
- if (len + optlen)
- ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) +
- optlen + len));
- ti->ti_sum = cksum(m, (int)(hdrlen + len));
-
- /*
- * In transmit state, time the transmission and arrange for
- * the retransmit. In persist state, just set snd_max.
- */
- if (tp->t_force == 0 || tp->t_timer[TCPT_PERSIST] == 0) {
- tcp_seq startseq = tp->snd_nxt;
-
- /*
- * Advance snd_nxt over sequence space of this segment.
- */
- if (flags & (TH_SYN|TH_FIN)) {
- if (flags & TH_SYN)
- tp->snd_nxt++;
- if (flags & TH_FIN) {
- tp->snd_nxt++;
- tp->t_flags |= TF_SENTFIN;
- }
- }
- tp->snd_nxt += len;
- if (SEQ_GT(tp->snd_nxt, tp->snd_max)) {
- tp->snd_max = tp->snd_nxt;
- /*
- * Time this transmission if not a retransmission and
- * not currently timing anything.
- */
- if (tp->t_rtt == 0) {
- tp->t_rtt = 1;
- tp->t_rtseq = startseq;
- }
- }
-
- /*
- * Set retransmit timer if not currently set,
- * and not doing an ack or a keep-alive probe.
- * Initial value for retransmit timer is smoothed
- * round-trip time + 2 * round-trip time variance.
- * Initialize shift counter which is used for backoff
- * of retransmit time.
- */
- if (tp->t_timer[TCPT_REXMT] == 0 &&
- tp->snd_nxt != tp->snd_una) {
- tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
- if (tp->t_timer[TCPT_PERSIST]) {
- tp->t_timer[TCPT_PERSIST] = 0;
- tp->t_rxtshift = 0;
- }
- }
- } else
- if (SEQ_GT(tp->snd_nxt + len, tp->snd_max))
- tp->snd_max = tp->snd_nxt + len;
-
- /*
- * Fill in IP length and desired time to live and
- * send to IP level. There should be a better way
- * to handle ttl and tos; we could keep them in
- * the template, but need a way to checksum without them.
- */
- m->m_len = hdrlen + len; /* XXX Needed? m_len should be correct */
- tcpiph_save = *mtod(m, struct tcpiphdr *);
-
- switch (so->so_ffamily) {
- case AF_INET:
- m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip);
- m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip);
- ip = mtod(m, struct ip *);
-
- ip->ip_len = m->m_len;
- ip->ip_dst = tcpiph_save.ti_dst;
- ip->ip_src = tcpiph_save.ti_src;
- ip->ip_p = tcpiph_save.ti_pr;
-
- ip->ip_ttl = IPDEFTTL;
- ip->ip_tos = so->so_iptos;
- error = ip_output(so, m);
- break;
-
- case AF_INET6:
- m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip6);
- m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip6);
- ip6 = mtod(m, struct ip6 *);
-
- ip6->ip_pl = tcpiph_save.ti_len;
- ip6->ip_dst = tcpiph_save.ti_dst6;
- ip6->ip_src = tcpiph_save.ti_src6;
- ip6->ip_nh = tcpiph_save.ti_nh6;
-
- error = ip6_output(so, m, 0);
- break;
-
- default:
- g_assert_not_reached();
- }
-
- if (error) {
-out:
- return (error);
- }
-
- /*
- * Data sent (as far as we can tell).
- * If this advertises a larger window than any other segment,
- * then remember the size of the advertised window.
- * Any pending ACK has now been sent.
- */
- if (win > 0 && SEQ_GT(tp->rcv_nxt+win, tp->rcv_adv))
- tp->rcv_adv = tp->rcv_nxt + win;
- tp->last_ack_sent = tp->rcv_nxt;
- tp->t_flags &= ~(TF_ACKNOW|TF_DELACK);
- if (sendalot)
- goto again;
-
- return (0);
-}
-
-void
-tcp_setpersist(struct tcpcb *tp)
-{
- int t = ((tp->t_srtt >> 2) + tp->t_rttvar) >> 1;
-
- /*
- * Start/restart persistence timer.
- */
- TCPT_RANGESET(tp->t_timer[TCPT_PERSIST],
- t * tcp_backoff[tp->t_rxtshift],
- TCPTV_PERSMIN, TCPTV_PERSMAX);
- if (tp->t_rxtshift < TCP_MAXRXTSHIFT)
- tp->t_rxtshift++;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_subr.c 8.1 (Berkeley) 6/10/93
- * tcp_subr.c,v 1.5 1994/10/08 22:39:58 phk Exp
- */
-
-/*
- * Changes and additions relating to SLiRP
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-
-/* patchable/settable parameters for tcp */
-/* Don't do rfc1323 performance enhancements */
-#define TCP_DO_RFC1323 0
-
-/*
- * Tcp initialization
- */
-void
-tcp_init(Slirp *slirp)
-{
- slirp->tcp_iss = 1; /* wrong */
- slirp->tcb.so_next = slirp->tcb.so_prev = &slirp->tcb;
- slirp->tcp_last_so = &slirp->tcb;
-}
-
-void tcp_cleanup(Slirp *slirp)
-{
- while (slirp->tcb.so_next != &slirp->tcb) {
- tcp_close(sototcpcb(slirp->tcb.so_next));
- }
-}
-
-/*
- * Create template to be used to send tcp packets on a connection.
- * Call after host entry created, fills
- * in a skeletal tcp/ip header, minimizing the amount of work
- * necessary when the connection is used.
- */
-void
-tcp_template(struct tcpcb *tp)
-{
- struct socket *so = tp->t_socket;
- register struct tcpiphdr *n = &tp->t_template;
-
- n->ti_mbuf = NULL;
- memset(&n->ti, 0, sizeof(n->ti));
- n->ti_x0 = 0;
- switch (so->so_ffamily) {
- case AF_INET:
- n->ti_pr = IPPROTO_TCP;
- n->ti_len = htons(sizeof(struct tcphdr));
- n->ti_src = so->so_faddr;
- n->ti_dst = so->so_laddr;
- n->ti_sport = so->so_fport;
- n->ti_dport = so->so_lport;
- break;
-
- case AF_INET6:
- n->ti_nh6 = IPPROTO_TCP;
- n->ti_len = htons(sizeof(struct tcphdr));
- n->ti_src6 = so->so_faddr6;
- n->ti_dst6 = so->so_laddr6;
- n->ti_sport = so->so_fport6;
- n->ti_dport = so->so_lport6;
- break;
-
- default:
- g_assert_not_reached();
- }
-
- n->ti_seq = 0;
- n->ti_ack = 0;
- n->ti_x2 = 0;
- n->ti_off = 5;
- n->ti_flags = 0;
- n->ti_win = 0;
- n->ti_sum = 0;
- n->ti_urp = 0;
-}
-
-/*
- * Send a single message to the TCP at address specified by
- * the given TCP/IP header. If m == 0, then we make a copy
- * of the tcpiphdr at ti and send directly to the addressed host.
- * This is used to force keep alive messages out using the TCP
- * template for a connection tp->t_template. If flags are given
- * then we send a message back to the TCP which originated the
- * segment ti, and discard the mbuf containing it and any other
- * attached mbufs.
- *
- * In any case the ack and sequence number of the transmitted
- * segment are as specified by the parameters.
- */
-void
-tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
- tcp_seq ack, tcp_seq seq, int flags, unsigned short af)
-{
- register int tlen;
- int win = 0;
-
- DEBUG_CALL("tcp_respond");
- DEBUG_ARG("tp = %p", tp);
- DEBUG_ARG("ti = %p", ti);
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("ack = %u", ack);
- DEBUG_ARG("seq = %u", seq);
- DEBUG_ARG("flags = %x", flags);
-
- if (tp)
- win = sbspace(&tp->t_socket->so_rcv);
- if (m == NULL) {
- if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL)
- return;
- tlen = 0;
- m->m_data += IF_MAXLINKHDR;
- *mtod(m, struct tcpiphdr *) = *ti;
- ti = mtod(m, struct tcpiphdr *);
- switch (af) {
- case AF_INET:
- ti->ti.ti_i4.ih_x1 = 0;
- break;
- case AF_INET6:
- ti->ti.ti_i6.ih_x1 = 0;
- break;
- default:
- g_assert_not_reached();
- }
- flags = TH_ACK;
- } else {
- /*
- * ti points into m so the next line is just making
- * the mbuf point to ti
- */
- m->m_data = (char *)ti;
-
- m->m_len = sizeof (struct tcpiphdr);
- tlen = 0;
-#define xchg(a,b,type) { type t; t=a; a=b; b=t; }
- switch (af) {
- case AF_INET:
- xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, uint32_t);
- xchg(ti->ti_dport, ti->ti_sport, uint16_t);
- break;
- case AF_INET6:
- xchg(ti->ti_dst6, ti->ti_src6, struct in6_addr);
- xchg(ti->ti_dport, ti->ti_sport, uint16_t);
- break;
- default:
- g_assert_not_reached();
- }
-#undef xchg
- }
- ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) + tlen));
- tlen += sizeof (struct tcpiphdr);
- m->m_len = tlen;
-
- ti->ti_mbuf = NULL;
- ti->ti_x0 = 0;
- ti->ti_seq = htonl(seq);
- ti->ti_ack = htonl(ack);
- ti->ti_x2 = 0;
- ti->ti_off = sizeof (struct tcphdr) >> 2;
- ti->ti_flags = flags;
- if (tp)
- ti->ti_win = htons((uint16_t) (win >> tp->rcv_scale));
- else
- ti->ti_win = htons((uint16_t)win);
- ti->ti_urp = 0;
- ti->ti_sum = 0;
- ti->ti_sum = cksum(m, tlen);
-
- struct tcpiphdr tcpiph_save = *(mtod(m, struct tcpiphdr *));
- struct ip *ip;
- struct ip6 *ip6;
-
- switch (af) {
- case AF_INET:
- m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip);
- m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip);
- ip = mtod(m, struct ip *);
- ip->ip_len = m->m_len;
- ip->ip_dst = tcpiph_save.ti_dst;
- ip->ip_src = tcpiph_save.ti_src;
- ip->ip_p = tcpiph_save.ti_pr;
-
- if (flags & TH_RST) {
- ip->ip_ttl = MAXTTL;
- } else {
- ip->ip_ttl = IPDEFTTL;
- }
-
- ip_output(NULL, m);
- break;
-
- case AF_INET6:
- m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip6);
- m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr)
- - sizeof(struct ip6);
- ip6 = mtod(m, struct ip6 *);
- ip6->ip_pl = tcpiph_save.ti_len;
- ip6->ip_dst = tcpiph_save.ti_dst6;
- ip6->ip_src = tcpiph_save.ti_src6;
- ip6->ip_nh = tcpiph_save.ti_nh6;
-
- ip6_output(NULL, m, 0);
- break;
-
- default:
- g_assert_not_reached();
- }
-}
-
-/*
- * Create a new TCP control block, making an
- * empty reassembly queue and hooking it to the argument
- * protocol control block.
- */
-struct tcpcb *
-tcp_newtcpcb(struct socket *so)
-{
- register struct tcpcb *tp;
-
- tp = (struct tcpcb *)malloc(sizeof(*tp));
- if (tp == NULL)
- return ((struct tcpcb *)0);
-
- memset((char *) tp, 0, sizeof(struct tcpcb));
- tp->seg_next = tp->seg_prev = (struct tcpiphdr*)tp;
- tp->t_maxseg = (so->so_ffamily == AF_INET) ? TCP_MSS : TCP6_MSS;
-
- tp->t_flags = TCP_DO_RFC1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0;
- tp->t_socket = so;
-
- /*
- * Init srtt to TCPTV_SRTTBASE (0), so we can tell that we have no
- * rtt estimate. Set rttvar so that srtt + 2 * rttvar gives
- * reasonable initial retransmit time.
- */
- tp->t_srtt = TCPTV_SRTTBASE;
- tp->t_rttvar = TCPTV_SRTTDFLT << 2;
- tp->t_rttmin = TCPTV_MIN;
-
- TCPT_RANGESET(tp->t_rxtcur,
- ((TCPTV_SRTTBASE >> 2) + (TCPTV_SRTTDFLT << 2)) >> 1,
- TCPTV_MIN, TCPTV_REXMTMAX);
-
- tp->snd_cwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT;
- tp->snd_ssthresh = TCP_MAXWIN << TCP_MAX_WINSHIFT;
- tp->t_state = TCPS_CLOSED;
-
- so->so_tcpcb = tp;
-
- return (tp);
-}
-
-/*
- * Drop a TCP connection, reporting
- * the specified error. If connection is synchronized,
- * then send a RST to peer.
- */
-struct tcpcb *tcp_drop(struct tcpcb *tp, int err)
-{
- DEBUG_CALL("tcp_drop");
- DEBUG_ARG("tp = %p", tp);
- DEBUG_ARG("errno = %d", errno);
-
- if (TCPS_HAVERCVDSYN(tp->t_state)) {
- tp->t_state = TCPS_CLOSED;
- (void) tcp_output(tp);
- }
- return (tcp_close(tp));
-}
-
-/*
- * Close a TCP control block:
- * discard all space held by the tcp
- * discard internet protocol block
- * wake up any sleepers
- */
-struct tcpcb *
-tcp_close(struct tcpcb *tp)
-{
- register struct tcpiphdr *t;
- struct socket *so = tp->t_socket;
- Slirp *slirp = so->slirp;
- register struct mbuf *m;
-
- DEBUG_CALL("tcp_close");
- DEBUG_ARG("tp = %p", tp);
-
- /* free the reassembly queue, if any */
- t = tcpfrag_list_first(tp);
- while (!tcpfrag_list_end(t, tp)) {
- t = tcpiphdr_next(t);
- m = tcpiphdr_prev(t)->ti_mbuf;
- remque(tcpiphdr2qlink(tcpiphdr_prev(t)));
- m_free(m);
- }
- free(tp);
- so->so_tcpcb = NULL;
- /* clobber input socket cache if we're closing the cached connection */
- if (so == slirp->tcp_last_so)
- slirp->tcp_last_so = &slirp->tcb;
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
- sbfree(&so->so_rcv);
- sbfree(&so->so_snd);
- sofree(so);
- return ((struct tcpcb *)0);
-}
-
-/*
- * TCP protocol interface to socket abstraction.
- */
-
-/*
- * User issued close, and wish to trail through shutdown states:
- * if never received SYN, just forget it. If got a SYN from peer,
- * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN.
- * If already got a FIN from peer, then almost done; go to LAST_ACK
- * state. In all other cases, have already sent FIN to peer (e.g.
- * after PRU_SHUTDOWN), and just have to play tedious game waiting
- * for peer to send FIN or not respond to keep-alives, etc.
- * We can let the user exit from the close as soon as the FIN is acked.
- */
-void
-tcp_sockclosed(struct tcpcb *tp)
-{
-
- DEBUG_CALL("tcp_sockclosed");
- DEBUG_ARG("tp = %p", tp);
-
- if (!tp) {
- return;
- }
-
- switch (tp->t_state) {
-
- case TCPS_CLOSED:
- case TCPS_LISTEN:
- case TCPS_SYN_SENT:
- tp->t_state = TCPS_CLOSED;
- tp = tcp_close(tp);
- break;
-
- case TCPS_SYN_RECEIVED:
- case TCPS_ESTABLISHED:
- tp->t_state = TCPS_FIN_WAIT_1;
- break;
-
- case TCPS_CLOSE_WAIT:
- tp->t_state = TCPS_LAST_ACK;
- break;
- }
- tcp_output(tp);
-}
-
-/*
- * Connect to a host on the Internet
- * Called by tcp_input
- * Only do a connect, the tcp fields will be set in tcp_input
- * return 0 if there's a result of the connect,
- * else return -1 means we're still connecting
- * The return value is almost always -1 since the socket is
- * nonblocking. Connect returns after the SYN is sent, and does
- * not wait for ACK+SYN.
- */
-int tcp_fconnect(struct socket *so, unsigned short af)
-{
- int ret=0;
-
- DEBUG_CALL("tcp_fconnect");
- DEBUG_ARG("so = %p", so);
-
- ret = so->s = slirp_socket(af, SOCK_STREAM, 0);
- if (ret >= 0) {
- int opt, s=so->s;
- struct sockaddr_storage addr;
-
- slirp_set_nonblock(s);
- so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
- slirp_socket_set_fast_reuse(s);
- opt = 1;
- setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt));
- opt = 1;
- setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt));
-
- addr = so->fhost.ss;
- DEBUG_CALL(" connect()ing");
- sotranslate_out(so, &addr);
-
- /* We don't care what port we get */
- ret = connect(s, (struct sockaddr *)&addr, sockaddr_size(&addr));
-
- /*
- * If it's not in progress, it failed, so we just return 0,
- * without clearing SS_NOFDREF
- */
- soisfconnecting(so);
- }
-
- return(ret);
-}
-
-/*
- * Accept the socket and connect to the local-host
- *
- * We have a problem. The correct thing to do would be
- * to first connect to the local-host, and only if the
- * connection is accepted, then do an accept() here.
- * But, a) we need to know who's trying to connect
- * to the socket to be able to SYN the local-host, and
- * b) we are already connected to the foreign host by
- * the time it gets to accept(), so... We simply accept
- * here and SYN the local-host.
- */
-void tcp_connect(struct socket *inso)
-{
- Slirp *slirp = inso->slirp;
- struct socket *so;
- struct sockaddr_storage addr;
- socklen_t addrlen = sizeof(struct sockaddr_storage);
- struct tcpcb *tp;
- int s, opt;
-
- DEBUG_CALL("tcp_connect");
- DEBUG_ARG("inso = %p", inso);
-
- /*
- * If it's an SS_ACCEPTONCE socket, no need to socreate()
- * another socket, just use the accept() socket.
- */
- if (inso->so_state & SS_FACCEPTONCE) {
- /* FACCEPTONCE already have a tcpcb */
- so = inso;
- } else {
- so = socreate(slirp);
- if (tcp_attach(so) < 0) {
- g_free(so); /* NOT sofree */
- return;
- }
- so->lhost = inso->lhost;
- so->so_ffamily = inso->so_ffamily;
- }
-
- tcp_mss(sototcpcb(so), 0);
-
- s = accept(inso->s, (struct sockaddr *)&addr, &addrlen);
- if (s < 0) {
- tcp_close(sototcpcb(so)); /* This will sofree() as well */
- return;
- }
- slirp_set_nonblock(s);
- so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque);
- slirp_socket_set_fast_reuse(s);
- opt = 1;
- setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
- slirp_socket_set_nodelay(s);
-
- so->fhost.ss = addr;
- sotranslate_accept(so);
-
- /* Close the accept() socket, set right state */
- if (inso->so_state & SS_FACCEPTONCE) {
- /* If we only accept once, close the accept() socket */
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
-
- /* Don't select it yet, even though we have an FD */
- /* if it's not FACCEPTONCE, it's already NOFDREF */
- so->so_state = SS_NOFDREF;
- }
- so->s = s;
- so->so_state |= SS_INCOMING;
-
- so->so_iptos = tcp_tos(so);
- tp = sototcpcb(so);
-
- tcp_template(tp);
-
- tp->t_state = TCPS_SYN_SENT;
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
- tp->iss = slirp->tcp_iss;
- slirp->tcp_iss += TCP_ISSINCR/2;
- tcp_sendseqinit(tp);
- tcp_output(tp);
-}
-
-/*
- * Attach a TCPCB to a socket.
- */
-int
-tcp_attach(struct socket *so)
-{
- if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL)
- return -1;
-
- insque(so, &so->slirp->tcb);
-
- return 0;
-}
-
-/*
- * Set the socket's type of service field
- */
-static const struct tos_t tcptos[] = {
- {0, 20, IPTOS_THROUGHPUT, 0}, /* ftp data */
- {21, 21, IPTOS_LOWDELAY, EMU_FTP}, /* ftp control */
- {0, 23, IPTOS_LOWDELAY, 0}, /* telnet */
- {0, 80, IPTOS_THROUGHPUT, 0}, /* WWW */
- {0, 513, IPTOS_LOWDELAY, EMU_RLOGIN|EMU_NOCONNECT}, /* rlogin */
- {0, 544, IPTOS_LOWDELAY, EMU_KSH}, /* kshell */
- {0, 543, IPTOS_LOWDELAY, 0}, /* klogin */
- {0, 6667, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC */
- {0, 6668, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC undernet */
- {0, 7070, IPTOS_LOWDELAY, EMU_REALAUDIO }, /* RealAudio control */
- {0, 113, IPTOS_LOWDELAY, EMU_IDENT }, /* identd protocol */
- {0, 0, 0, 0}
-};
-
-static struct emu_t *tcpemu = NULL;
-
-/*
- * Return TOS according to the above table
- */
-uint8_t
-tcp_tos(struct socket *so)
-{
- int i = 0;
- struct emu_t *emup;
-
- while(tcptos[i].tos) {
- if ((tcptos[i].fport && (ntohs(so->so_fport) == tcptos[i].fport)) ||
- (tcptos[i].lport && (ntohs(so->so_lport) == tcptos[i].lport))) {
- so->so_emu = tcptos[i].emu;
- return tcptos[i].tos;
- }
- i++;
- }
-
- /* Nope, lets see if there's a user-added one */
- for (emup = tcpemu; emup; emup = emup->next) {
- if ((emup->fport && (ntohs(so->so_fport) == emup->fport)) ||
- (emup->lport && (ntohs(so->so_lport) == emup->lport))) {
- so->so_emu = emup->emu;
- return emup->tos;
- }
- }
-
- return 0;
-}
-
-/*
- * Emulate programs that try and connect to us
- * This includes ftp (the data connection is
- * initiated by the server) and IRC (DCC CHAT and
- * DCC SEND) for now
- *
- * NOTE: It's possible to crash SLiRP by sending it
- * unstandard strings to emulate... if this is a problem,
- * more checks are needed here
- *
- * XXX Assumes the whole command came in one packet
- *
- * XXX Some ftp clients will have their TOS set to
- * LOWDELAY and so Nagel will kick in. Because of this,
- * we'll get the first letter, followed by the rest, so
- * we simply scan for ORT instead of PORT...
- * DCC doesn't have this problem because there's other stuff
- * in the packet before the DCC command.
- *
- * Return 1 if the mbuf m is still valid and should be
- * sbappend()ed
- *
- * NOTE: if you return 0 you MUST m_free() the mbuf!
- */
-int
-tcp_emu(struct socket *so, struct mbuf *m)
-{
- Slirp *slirp = so->slirp;
- unsigned n1, n2, n3, n4, n5, n6;
- char buff[257];
- uint32_t laddr;
- unsigned lport;
- char *bptr;
-
- DEBUG_CALL("tcp_emu");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
-
- switch(so->so_emu) {
- int x, i;
-
- case EMU_IDENT:
- /*
- * Identification protocol as per rfc-1413
- */
-
- {
- struct socket *tmpso;
- struct sockaddr_in addr;
- socklen_t addrlen = sizeof(struct sockaddr_in);
- struct sbuf *so_rcv = &so->so_rcv;
-
- if (m->m_len > so_rcv->sb_datalen
- - (so_rcv->sb_wptr - so_rcv->sb_data)) {
- return 1;
- }
-
- memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
- so_rcv->sb_wptr += m->m_len;
- so_rcv->sb_rptr += m->m_len;
- m->m_data[m->m_len] = 0; /* NULL terminate */
- if (strchr(m->m_data, '\r') || strchr(m->m_data, '\n')) {
- if (sscanf(so_rcv->sb_data, "%u%*[ ,]%u", &n1, &n2) == 2) {
- HTONS(n1);
- HTONS(n2);
- /* n2 is the one on our host */
- for (tmpso = slirp->tcb.so_next;
- tmpso != &slirp->tcb;
- tmpso = tmpso->so_next) {
- if (tmpso->so_laddr.s_addr == so->so_laddr.s_addr &&
- tmpso->so_lport == n2 &&
- tmpso->so_faddr.s_addr == so->so_faddr.s_addr &&
- tmpso->so_fport == n1) {
- if (getsockname(tmpso->s,
- (struct sockaddr *)&addr, &addrlen) == 0)
- n2 = ntohs(addr.sin_port);
- break;
- }
- }
- }
- so_rcv->sb_cc = snprintf(so_rcv->sb_data,
- so_rcv->sb_datalen,
- "%d,%d\r\n", n1, n2);
- so_rcv->sb_rptr = so_rcv->sb_data;
- so_rcv->sb_wptr = so_rcv->sb_data + so_rcv->sb_cc;
- }
- m_free(m);
- return 0;
- }
-
- case EMU_FTP: /* ftp */
- *(m->m_data+m->m_len) = 0; /* NUL terminate for strstr */
- if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) {
- /*
- * Need to emulate the PORT command
- */
- x = sscanf(bptr, "ORT %u,%u,%u,%u,%u,%u\r\n%256[^\177]",
- &n1, &n2, &n3, &n4, &n5, &n6, buff);
- if (x < 6)
- return 1;
-
- laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
- lport = htons((n5 << 8) | (n6));
-
- if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr,
- lport, SS_FACCEPTONCE)) == NULL) {
- return 1;
- }
- n6 = ntohs(so->so_fport);
-
- n5 = (n6 >> 8) & 0xff;
- n6 &= 0xff;
-
- laddr = ntohl(so->so_faddr.s_addr);
-
- n1 = ((laddr >> 24) & 0xff);
- n2 = ((laddr >> 16) & 0xff);
- n3 = ((laddr >> 8) & 0xff);
- n4 = (laddr & 0xff);
-
- m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
- "ORT %d,%d,%d,%d,%d,%d\r\n%s",
- n1, n2, n3, n4, n5, n6, x==7?buff:"");
- return 1;
- } else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) {
- /*
- * Need to emulate the PASV response
- */
- x = sscanf(bptr, "27 Entering Passive Mode (%u,%u,%u,%u,%u,%u)\r\n%256[^\177]",
- &n1, &n2, &n3, &n4, &n5, &n6, buff);
- if (x < 6)
- return 1;
-
- laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4));
- lport = htons((n5 << 8) | (n6));
-
- if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr,
- lport, SS_FACCEPTONCE)) == NULL) {
- return 1;
- }
- n6 = ntohs(so->so_fport);
-
- n5 = (n6 >> 8) & 0xff;
- n6 &= 0xff;
-
- laddr = ntohl(so->so_faddr.s_addr);
-
- n1 = ((laddr >> 24) & 0xff);
- n2 = ((laddr >> 16) & 0xff);
- n3 = ((laddr >> 8) & 0xff);
- n4 = (laddr & 0xff);
-
- m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
- "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
- n1, n2, n3, n4, n5, n6, x==7?buff:"");
-
- return 1;
- }
-
- return 1;
-
- case EMU_KSH:
- /*
- * The kshell (Kerberos rsh) and shell services both pass
- * a local port port number to carry signals to the server
- * and stderr to the client. It is passed at the beginning
- * of the connection as a NUL-terminated decimal ASCII string.
- */
- so->so_emu = 0;
- for (lport = 0, i = 0; i < m->m_len-1; ++i) {
- if (m->m_data[i] < '0' || m->m_data[i] > '9')
- return 1; /* invalid number */
- lport *= 10;
- lport += m->m_data[i] - '0';
- }
- if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
- (so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
- htons(lport), SS_FACCEPTONCE)) != NULL)
- m->m_len = snprintf(m->m_data, m->m_size, "%d",
- ntohs(so->so_fport)) + 1;
- return 1;
-
- case EMU_IRC:
- /*
- * Need to emulate DCC CHAT, DCC SEND and DCC MOVE
- */
- *(m->m_data+m->m_len) = 0; /* NULL terminate the string for strstr */
- if ((bptr = (char *)strstr(m->m_data, "DCC")) == NULL)
- return 1;
-
- /* The %256s is for the broken mIRC */
- if (sscanf(bptr, "DCC CHAT %256s %u %u", buff, &laddr, &lport) == 3) {
- if ((so = tcp_listen(slirp, INADDR_ANY, 0,
- htonl(laddr), htons(lport),
- SS_FACCEPTONCE)) == NULL) {
- return 1;
- }
- m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
- "DCC CHAT chat %lu %u%c\n",
- (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), 1);
- } else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
- if ((so = tcp_listen(slirp, INADDR_ANY, 0,
- htonl(laddr), htons(lport),
- SS_FACCEPTONCE)) == NULL) {
- return 1;
- }
- m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
- "DCC SEND %s %lu %u %u%c\n", buff,
- (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), n1, 1);
- } else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) {
- if ((so = tcp_listen(slirp, INADDR_ANY, 0,
- htonl(laddr), htons(lport),
- SS_FACCEPTONCE)) == NULL) {
- return 1;
- }
- m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
- "DCC MOVE %s %lu %u %u%c\n", buff,
- (unsigned long)ntohl(so->so_faddr.s_addr),
- ntohs(so->so_fport), n1, 1);
- }
- return 1;
-
- case EMU_REALAUDIO:
- /*
- * RealAudio emulation - JP. We must try to parse the incoming
- * data and try to find the two characters that contain the
- * port number. Then we redirect an udp port and replace the
- * number with the real port we got.
- *
- * The 1.0 beta versions of the player are not supported
- * any more.
- *
- * A typical packet for player version 1.0 (release version):
- *
- * 0000:50 4E 41 00 05
- * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 ........g.l.c..P
- * 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH
- * 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v
- * 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB
- *
- * Now the port number 0x1BD7 is found at offset 0x04 of the
- * Now the port number 0x1BD7 is found at offset 0x04 of the
- * second packet. This time we received five bytes first and
- * then the rest. You never know how many bytes you get.
- *
- * A typical packet for player version 2.0 (beta):
- *
- * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA.............
- * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .gux.c..Win2.0.0
- * 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/
- * 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas
- * 0040:65 2E 72 61 79 53 00 00 06 36 42 e.rayS...6B
- *
- * Port number 0x1BC1 is found at offset 0x0d.
- *
- * This is just a horrible switch statement. Variable ra tells
- * us where we're going.
- */
-
- bptr = m->m_data;
- while (bptr < m->m_data + m->m_len) {
- uint16_t p;
- static int ra = 0;
- char ra_tbl[4];
-
- ra_tbl[0] = 0x50;
- ra_tbl[1] = 0x4e;
- ra_tbl[2] = 0x41;
- ra_tbl[3] = 0;
-
- switch (ra) {
- case 0:
- case 2:
- case 3:
- if (*bptr++ != ra_tbl[ra]) {
- ra = 0;
- continue;
- }
- break;
-
- case 1:
- /*
- * We may get 0x50 several times, ignore them
- */
- if (*bptr == 0x50) {
- ra = 1;
- bptr++;
- continue;
- } else if (*bptr++ != ra_tbl[ra]) {
- ra = 0;
- continue;
- }
- break;
-
- case 4:
- /*
- * skip version number
- */
- bptr++;
- break;
-
- case 5:
- /*
- * The difference between versions 1.0 and
- * 2.0 is here. For future versions of
- * the player this may need to be modified.
- */
- if (*(bptr + 1) == 0x02)
- bptr += 8;
- else
- bptr += 4;
- break;
-
- case 6:
- /* This is the field containing the port
- * number that RA-player is listening to.
- */
- lport = (((uint8_t*)bptr)[0] << 8)
- + ((uint8_t *)bptr)[1];
- if (lport < 6970)
- lport += 256; /* don't know why */
- if (lport < 6970 || lport > 7170)
- return 1; /* failed */
-
- /* try to get udp port between 6970 - 7170 */
- for (p = 6970; p < 7071; p++) {
- if (udp_listen(slirp, INADDR_ANY,
- htons(p),
- so->so_laddr.s_addr,
- htons(lport),
- SS_FACCEPTONCE)) {
- break;
- }
- }
- if (p == 7071)
- p = 0;
- *(uint8_t *)bptr++ = (p >> 8) & 0xff;
- *(uint8_t *)bptr = p & 0xff;
- ra = 0;
- return 1; /* port redirected, we're done */
- break;
-
- default:
- ra = 0;
- }
- ra++;
- }
- return 1;
-
- default:
- /* Ooops, not emulated, won't call tcp_emu again */
- so->so_emu = 0;
- return 1;
- }
-}
-
-/*
- * Do misc. config of SLiRP while its running.
- * Return 0 if this connections is to be closed, 1 otherwise,
- * return 2 if this is a command-line connection
- */
-int tcp_ctl(struct socket *so)
-{
- Slirp *slirp = so->slirp;
- struct sbuf *sb = &so->so_snd;
- struct gfwd_list *ex_ptr;
-
- DEBUG_CALL("tcp_ctl");
- DEBUG_ARG("so = %p", so);
-
- if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr) {
- /* Check if it's pty_exec */
- for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
- if (ex_ptr->ex_fport == so->so_fport &&
- so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) {
- if (ex_ptr->write_cb) {
- so->s = -1;
- so->guestfwd = ex_ptr;
- return 1;
- }
- DEBUG_MISC(" executing %s", ex_ptr->ex_exec);
- return fork_exec(so, ex_ptr->ex_exec);
- }
- }
- }
- sb->sb_cc =
- snprintf(sb->sb_wptr, sb->sb_datalen - (sb->sb_wptr - sb->sb_data),
- "Error: No application configured.\r\n");
- sb->sb_wptr += sb->sb_cc;
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_timer.c 8.1 (Berkeley) 6/10/93
- * tcp_timer.c,v 1.2 1994/08/02 07:49:10 davidg Exp
- */
-
-#include "slirp.h"
-
-static struct tcpcb *tcp_timers(register struct tcpcb *tp, int timer);
-
-/*
- * Fast timeout routine for processing delayed acks
- */
-void
-tcp_fasttimo(Slirp *slirp)
-{
- register struct socket *so;
- register struct tcpcb *tp;
-
- DEBUG_CALL("tcp_fasttimo");
-
- so = slirp->tcb.so_next;
- if (so)
- for (; so != &slirp->tcb; so = so->so_next)
- if ((tp = (struct tcpcb *)so->so_tcpcb) &&
- (tp->t_flags & TF_DELACK)) {
- tp->t_flags &= ~TF_DELACK;
- tp->t_flags |= TF_ACKNOW;
- (void) tcp_output(tp);
- }
-}
-
-/*
- * Tcp protocol timeout routine called every 500 ms.
- * Updates the timers in all active tcb's and
- * causes finite state machine actions if timers expire.
- */
-void
-tcp_slowtimo(Slirp *slirp)
-{
- register struct socket *ip, *ipnxt;
- register struct tcpcb *tp;
- register int i;
-
- DEBUG_CALL("tcp_slowtimo");
-
- /*
- * Search through tcb's and update active timers.
- */
- ip = slirp->tcb.so_next;
- if (ip == NULL) {
- return;
- }
- for (; ip != &slirp->tcb; ip = ipnxt) {
- ipnxt = ip->so_next;
- tp = sototcpcb(ip);
- if (tp == NULL) {
- continue;
- }
- for (i = 0; i < TCPT_NTIMERS; i++) {
- if (tp->t_timer[i] && --tp->t_timer[i] == 0) {
- tcp_timers(tp,i);
- if (ipnxt->so_prev != ip)
- goto tpgone;
- }
- }
- tp->t_idle++;
- if (tp->t_rtt)
- tp->t_rtt++;
-tpgone:
- ;
- }
- slirp->tcp_iss += TCP_ISSINCR/PR_SLOWHZ; /* increment iss */
- slirp->tcp_now++; /* for timestamps */
-}
-
-/*
- * Cancel all timers for TCP tp.
- */
-void
-tcp_canceltimers(struct tcpcb *tp)
-{
- register int i;
-
- for (i = 0; i < TCPT_NTIMERS; i++)
- tp->t_timer[i] = 0;
-}
-
-const int tcp_backoff[TCP_MAXRXTSHIFT + 1] =
- { 1, 2, 4, 8, 16, 32, 64, 64, 64, 64, 64, 64, 64 };
-
-/*
- * TCP timer processing.
- */
-static struct tcpcb *
-tcp_timers(register struct tcpcb *tp, int timer)
-{
- register int rexmt;
-
- DEBUG_CALL("tcp_timers");
-
- switch (timer) {
-
- /*
- * 2 MSL timeout in shutdown went off. If we're closed but
- * still waiting for peer to close and connection has been idle
- * too long, or if 2MSL time is up from TIME_WAIT, delete connection
- * control block. Otherwise, check again in a bit.
- */
- case TCPT_2MSL:
- if (tp->t_state != TCPS_TIME_WAIT &&
- tp->t_idle <= TCP_MAXIDLE)
- tp->t_timer[TCPT_2MSL] = TCPTV_KEEPINTVL;
- else
- tp = tcp_close(tp);
- break;
-
- /*
- * Retransmission timer went off. Message has not
- * been acked within retransmit interval. Back off
- * to a longer retransmit interval and retransmit one segment.
- */
- case TCPT_REXMT:
-
- /*
- * XXXXX If a packet has timed out, then remove all the queued
- * packets for that session.
- */
-
- if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) {
- /*
- * This is a hack to suit our terminal server here at the uni of canberra
- * since they have trouble with zeroes... It usually lets them through
- * unharmed, but under some conditions, it'll eat the zeros. If we
- * keep retransmitting it, it'll keep eating the zeroes, so we keep
- * retransmitting, and eventually the connection dies...
- * (this only happens on incoming data)
- *
- * So, if we were gonna drop the connection from too many retransmits,
- * don't... instead halve the t_maxseg, which might break up the NULLs and
- * let them through
- *
- * *sigh*
- */
-
- tp->t_maxseg >>= 1;
- if (tp->t_maxseg < 32) {
- /*
- * We tried our best, now the connection must die!
- */
- tp->t_rxtshift = TCP_MAXRXTSHIFT;
- tp = tcp_drop(tp, tp->t_softerror);
- /* tp->t_softerror : ETIMEDOUT); */ /* XXX */
- return (tp); /* XXX */
- }
-
- /*
- * Set rxtshift to 6, which is still at the maximum
- * backoff time
- */
- tp->t_rxtshift = 6;
- }
- rexmt = TCP_REXMTVAL(tp) * tcp_backoff[tp->t_rxtshift];
- TCPT_RANGESET(tp->t_rxtcur, rexmt,
- (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */
- tp->t_timer[TCPT_REXMT] = tp->t_rxtcur;
- /*
- * If losing, let the lower level know and try for
- * a better route. Also, if we backed off this far,
- * our srtt estimate is probably bogus. Clobber it
- * so we'll take the next rtt measurement as our srtt;
- * move the current srtt into rttvar to keep the current
- * retransmit times until then.
- */
- if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) {
- tp->t_rttvar += (tp->t_srtt >> TCP_RTT_SHIFT);
- tp->t_srtt = 0;
- }
- tp->snd_nxt = tp->snd_una;
- /*
- * If timing a segment in this window, stop the timer.
- */
- tp->t_rtt = 0;
- /*
- * Close the congestion window down to one segment
- * (we'll open it by one segment for each ack we get).
- * Since we probably have a window's worth of unacked
- * data accumulated, this "slow start" keeps us from
- * dumping all that data as back-to-back packets (which
- * might overwhelm an intermediate gateway).
- *
- * There are two phases to the opening: Initially we
- * open by one mss on each ack. This makes the window
- * size increase exponentially with time. If the
- * window is larger than the path can handle, this
- * exponential growth results in dropped packet(s)
- * almost immediately. To get more time between
- * drops but still "push" the network to take advantage
- * of improving conditions, we switch from exponential
- * to linear window opening at some threshold size.
- * For a threshold, we use half the current window
- * size, truncated to a multiple of the mss.
- *
- * (the minimum cwnd that will give us exponential
- * growth is 2 mss. We don't allow the threshold
- * to go below this.)
- */
- {
- unsigned win = MIN(tp->snd_wnd, tp->snd_cwnd) / 2 / tp->t_maxseg;
- if (win < 2)
- win = 2;
- tp->snd_cwnd = tp->t_maxseg;
- tp->snd_ssthresh = win * tp->t_maxseg;
- tp->t_dupacks = 0;
- }
- (void) tcp_output(tp);
- break;
-
- /*
- * Persistence timer into zero window.
- * Force a byte to be output, if possible.
- */
- case TCPT_PERSIST:
- tcp_setpersist(tp);
- tp->t_force = 1;
- (void) tcp_output(tp);
- tp->t_force = 0;
- break;
-
- /*
- * Keep-alive timer went off; send something
- * or drop connection if idle for too long.
- */
- case TCPT_KEEP:
- if (tp->t_state < TCPS_ESTABLISHED)
- goto dropit;
-
- if (slirp_do_keepalive && tp->t_state <= TCPS_CLOSE_WAIT) {
- if (tp->t_idle >= TCPTV_KEEP_IDLE + TCP_MAXIDLE)
- goto dropit;
- /*
- * Send a packet designed to force a response
- * if the peer is up and reachable:
- * either an ACK if the connection is still alive,
- * or an RST if the peer has closed the connection
- * due to timeout or reboot.
- * Using sequence number tp->snd_una-1
- * causes the transmitted zero-length segment
- * to lie outside the receive window;
- * by the protocol spec, this requires the
- * correspondent TCP to respond.
- */
- tcp_respond(tp, &tp->t_template, (struct mbuf *)NULL,
- tp->rcv_nxt, tp->snd_una - 1, 0,
- tp->t_socket->so_ffamily);
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL;
- } else
- tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE;
- break;
-
- dropit:
- tp = tcp_drop(tp, 0);
- break;
- }
-
- return (tp);
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93
- * tcp_timer.h,v 1.4 1994/08/21 05:27:38 paul Exp
- */
-
-#ifndef TCP_TIMER_H
-#define TCP_TIMER_H
-
-/*
- * Definitions of the TCP timers. These timers are counted
- * down PR_SLOWHZ times a second.
- */
-#define TCPT_NTIMERS 4
-
-#define TCPT_REXMT 0 /* retransmit */
-#define TCPT_PERSIST 1 /* retransmit persistence */
-#define TCPT_KEEP 2 /* keep alive */
-#define TCPT_2MSL 3 /* 2*msl quiet time timer */
-
-/*
- * The TCPT_REXMT timer is used to force retransmissions.
- * The TCP has the TCPT_REXMT timer set whenever segments
- * have been sent for which ACKs are expected but not yet
- * received. If an ACK is received which advances tp->snd_una,
- * then the retransmit timer is cleared (if there are no more
- * outstanding segments) or reset to the base value (if there
- * are more ACKs expected). Whenever the retransmit timer goes off,
- * we retransmit one unacknowledged segment, and do a backoff
- * on the retransmit timer.
- *
- * The TCPT_PERSIST timer is used to keep window size information
- * flowing even if the window goes shut. If all previous transmissions
- * have been acknowledged (so that there are no retransmissions in progress),
- * and the window is too small to bother sending anything, then we start
- * the TCPT_PERSIST timer. When it expires, if the window is nonzero,
- * we go to transmit state. Otherwise, at intervals send a single byte
- * into the peer's window to force him to update our window information.
- * We do this at most as often as TCPT_PERSMIN time intervals,
- * but no more frequently than the current estimate of round-trip
- * packet time. The TCPT_PERSIST timer is cleared whenever we receive
- * a window update from the peer.
- *
- * The TCPT_KEEP timer is used to keep connections alive. If an
- * connection is idle (no segments received) for TCPTV_KEEP_INIT amount of time,
- * but not yet established, then we drop the connection. Once the connection
- * is established, if the connection is idle for TCPTV_KEEP_IDLE time
- * (and keepalives have been enabled on the socket), we begin to probe
- * the connection. We force the peer to send us a segment by sending:
- * <SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK>
- * This segment is (deliberately) outside the window, and should elicit
- * an ack segment in response from the peer. If, despite the TCPT_KEEP
- * initiated segments we cannot elicit a response from a peer in TCPT_MAXIDLE
- * amount of time probing, then we drop the connection.
- */
-
-/*
- * Time constants.
- */
-#define TCPTV_MSL ( 5*PR_SLOWHZ) /* max seg lifetime (hah!) */
-
-#define TCPTV_SRTTBASE 0 /* base roundtrip time;
- if 0, no idea yet */
-#define TCPTV_SRTTDFLT ( 3*PR_SLOWHZ) /* assumed RTT if no info */
-
-#define TCPTV_PERSMIN ( 5*PR_SLOWHZ) /* retransmit persistence */
-#define TCPTV_PERSMAX ( 60*PR_SLOWHZ) /* maximum persist interval */
-
-#define TCPTV_KEEP_INIT ( 75*PR_SLOWHZ) /* initial connect keep alive */
-#define TCPTV_KEEP_IDLE (120*60*PR_SLOWHZ) /* dflt time before probing */
-#define TCPTV_KEEPINTVL ( 75*PR_SLOWHZ) /* default probe interval */
-#define TCPTV_KEEPCNT 8 /* max probes before drop */
-
-#define TCPTV_MIN ( 1*PR_SLOWHZ) /* minimum allowable value */
-#define TCPTV_REXMTMAX ( 12*PR_SLOWHZ) /* max allowable REXMT value */
-
-#define TCP_LINGERTIME 120 /* linger at most 2 minutes */
-
-#define TCP_MAXRXTSHIFT 12 /* maximum retransmits */
-
-
-/*
- * Force a time value to be in a certain range.
- */
-#define TCPT_RANGESET(tv, value, tvmin, tvmax) { \
- (tv) = (value); \
- if ((tv) < (tvmin)) \
- (tv) = (tvmin); \
- else if ((tv) > (tvmax)) \
- (tv) = (tvmax); \
-}
-
-extern const int tcp_backoff[];
-
-struct tcpcb;
-
-void tcp_fasttimo(Slirp *);
-void tcp_slowtimo(Slirp *);
-void tcp_canceltimers(struct tcpcb *);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcp_var.h 8.3 (Berkeley) 4/10/94
- * tcp_var.h,v 1.3 1994/08/21 05:27:39 paul Exp
- */
-
-#ifndef TCP_VAR_H
-#define TCP_VAR_H
-
-#include "tcpip.h"
-#include "tcp_timer.h"
-
-/*
- * Tcp control block, one per tcp; fields:
- */
-struct tcpcb {
- struct tcpiphdr *seg_next; /* sequencing queue */
- struct tcpiphdr *seg_prev;
- short t_state; /* state of this connection */
- short t_timer[TCPT_NTIMERS]; /* tcp timers */
- short t_rxtshift; /* log(2) of rexmt exp. backoff */
- short t_rxtcur; /* current retransmit value */
- short t_dupacks; /* consecutive dup acks recd */
- uint16_t t_maxseg; /* maximum segment size */
- uint8_t t_force; /* 1 if forcing out a byte */
- uint16_t t_flags;
-#define TF_ACKNOW 0x0001 /* ack peer immediately */
-#define TF_DELACK 0x0002 /* ack, but try to delay it */
-#define TF_NODELAY 0x0004 /* don't delay packets to coalesce */
-#define TF_NOOPT 0x0008 /* don't use tcp options */
-#define TF_SENTFIN 0x0010 /* have sent FIN */
-#define TF_REQ_SCALE 0x0020 /* have/will request window scaling */
-#define TF_RCVD_SCALE 0x0040 /* other side has requested scaling */
-#define TF_REQ_TSTMP 0x0080 /* have/will request timestamps */
-#define TF_RCVD_TSTMP 0x0100 /* a timestamp was received in SYN */
-#define TF_SACK_PERMIT 0x0200 /* other side said I could SACK */
-
- struct tcpiphdr t_template; /* static skeletal packet for xmit */
-
- struct socket *t_socket; /* back pointer to socket */
-/*
- * The following fields are used as in the protocol specification.
- * See RFC783, Dec. 1981, page 21.
- */
-/* send sequence variables */
- tcp_seq snd_una; /* send unacknowledged */
- tcp_seq snd_nxt; /* send next */
- tcp_seq snd_up; /* send urgent pointer */
- tcp_seq snd_wl1; /* window update seg seq number */
- tcp_seq snd_wl2; /* window update seg ack number */
- tcp_seq iss; /* initial send sequence number */
- uint32_t snd_wnd; /* send window */
-/* receive sequence variables */
- uint32_t rcv_wnd; /* receive window */
- tcp_seq rcv_nxt; /* receive next */
- tcp_seq rcv_up; /* receive urgent pointer */
- tcp_seq irs; /* initial receive sequence number */
-/*
- * Additional variables for this implementation.
- */
-/* receive variables */
- tcp_seq rcv_adv; /* advertised window */
-/* retransmit variables */
- tcp_seq snd_max; /* highest sequence number sent;
- * used to recognize retransmits
- */
-/* congestion control (for slow start, source quench, retransmit after loss) */
- uint32_t snd_cwnd; /* congestion-controlled window */
- uint32_t snd_ssthresh; /* snd_cwnd size threshold for
- * for slow start exponential to
- * linear switch
- */
-/*
- * transmit timing stuff. See below for scale of srtt and rttvar.
- * "Variance" is actually smoothed difference.
- */
- short t_idle; /* inactivity time */
- short t_rtt; /* round trip time */
- tcp_seq t_rtseq; /* sequence number being timed */
- short t_srtt; /* smoothed round-trip time */
- short t_rttvar; /* variance in round-trip time */
- uint16_t t_rttmin; /* minimum rtt allowed */
- uint32_t max_sndwnd; /* largest window peer has offered */
-
-/* out-of-band data */
- uint8_t t_oobflags; /* have some */
- uint8_t t_iobc; /* input character */
-#define TCPOOB_HAVEDATA 0x01
-#define TCPOOB_HADDATA 0x02
- short t_softerror; /* possible error not yet reported */
-
-/* RFC 1323 variables */
- uint8_t snd_scale; /* window scaling for send window */
- uint8_t rcv_scale; /* window scaling for recv window */
- uint8_t request_r_scale; /* pending window scaling */
- uint8_t requested_s_scale;
- uint32_t ts_recent; /* timestamp echo data */
- uint32_t ts_recent_age; /* when last updated */
- tcp_seq last_ack_sent;
-
-};
-
-#define sototcpcb(so) ((so)->so_tcpcb)
-
-/*
- * The smoothed round-trip time and estimated variance
- * are stored as fixed point numbers scaled by the values below.
- * For convenience, these scales are also used in smoothing the average
- * (smoothed = (1/scale)sample + ((scale-1)/scale)smoothed).
- * With these scales, srtt has 3 bits to the right of the binary point,
- * and thus an "ALPHA" of 0.875. rttvar has 2 bits to the right of the
- * binary point, and is smoothed with an ALPHA of 0.75.
- */
-#define TCP_RTT_SCALE 8 /* multiplier for srtt; 3 bits frac. */
-#define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */
-#define TCP_RTTVAR_SCALE 4 /* multiplier for rttvar; 2 bits */
-#define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */
-
-/*
- * The initial retransmission should happen at rtt + 4 * rttvar.
- * Because of the way we do the smoothing, srtt and rttvar
- * will each average +1/2 tick of bias. When we compute
- * the retransmit timer, we want 1/2 tick of rounding and
- * 1 extra tick because of +-1/2 tick uncertainty in the
- * firing of the timer. The bias will give us exactly the
- * 1.5 tick we need. But, because the bias is
- * statistical, we have to test that we don't drop below
- * the minimum feasible timer (which is 2 ticks).
- * This macro assumes that the value of TCP_RTTVAR_SCALE
- * is the same as the multiplier for rttvar.
- */
-#define TCP_REXMTVAL(tp) \
- (((tp)->t_srtt >> TCP_RTT_SHIFT) + (tp)->t_rttvar)
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)tcpip.h 8.1 (Berkeley) 6/10/93
- * tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp
- */
-
-#ifndef TCPIP_H
-#define TCPIP_H
-
-/*
- * Tcp+ip header, after ip options removed.
- */
-struct tcpiphdr {
- struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */
- union {
- struct {
- struct in_addr ih_src; /* source internet address */
- struct in_addr ih_dst; /* destination internet address */
- uint8_t ih_x1; /* (unused) */
- uint8_t ih_pr; /* protocol */
- } ti_i4;
- struct {
- struct in6_addr ih_src;
- struct in6_addr ih_dst;
- uint8_t ih_x1;
- uint8_t ih_nh;
- } ti_i6;
- } ti;
- uint16_t ti_x0;
- uint16_t ti_len; /* protocol length */
- struct tcphdr ti_t; /* tcp header */
-};
-#define ti_mbuf ih_mbuf.mptr
-#define ti_pr ti.ti_i4.ih_pr
-#define ti_src ti.ti_i4.ih_src
-#define ti_dst ti.ti_i4.ih_dst
-#define ti_src6 ti.ti_i6.ih_src
-#define ti_dst6 ti.ti_i6.ih_dst
-#define ti_nh6 ti.ti_i6.ih_nh
-#define ti_sport ti_t.th_sport
-#define ti_dport ti_t.th_dport
-#define ti_seq ti_t.th_seq
-#define ti_ack ti_t.th_ack
-#define ti_x2 ti_t.th_x2
-#define ti_off ti_t.th_off
-#define ti_flags ti_t.th_flags
-#define ti_win ti_t.th_win
-#define ti_sum ti_t.th_sum
-#define ti_urp ti_t.th_urp
-
-#define tcpiphdr2qlink(T) ((struct qlink*)(((char*)(T)) - sizeof(struct qlink)))
-#define qlink2tcpiphdr(Q) ((struct tcpiphdr*)(((char*)(Q)) + sizeof(struct qlink)))
-#define tcpiphdr_next(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->next)
-#define tcpiphdr_prev(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->prev)
-#define tcpfrag_list_first(T) qlink2tcpiphdr((T)->seg_next)
-#define tcpfrag_list_end(F, T) (tcpiphdr2qlink(F) == (struct qlink*)(T))
-#define tcpfrag_list_empty(T) ((T)->seg_next == (struct tcpiphdr*)(T))
-
-/* This is the difference between the size of a tcpiphdr structure, and the
- * size of actual ip+tcp headers, rounded up since we need to align data. */
-#define TCPIPHDR_DELTA\
- (MAX(0,\
- (sizeof(struct tcpiphdr)\
- - sizeof(struct ip) - sizeof(struct tcphdr) + 3) & ~3))
-
-/*
- * Just a clean way to get to the first byte
- * of the packet
- */
-struct tcpiphdr_2 {
- struct tcpiphdr dummy;
- char first_char;
-};
-
-#endif
+++ /dev/null
-/*
- * tftp.c - a simple, read-only tftp server for qemu
- *
- * Copyright (c) 2004 Magnus Damm <damm@opensource.se>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "slirp.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-static inline int tftp_session_in_use(struct tftp_session *spt)
-{
- return (spt->slirp != NULL);
-}
-
-static inline void tftp_session_update(struct tftp_session *spt)
-{
- spt->timestamp = curtime;
-}
-
-static void tftp_session_terminate(struct tftp_session *spt)
-{
- if (spt->fd >= 0) {
- close(spt->fd);
- spt->fd = -1;
- }
- g_free(spt->filename);
- spt->slirp = NULL;
-}
-
-static int tftp_session_allocate(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp)
-{
- struct tftp_session *spt;
- int k;
-
- for (k = 0; k < TFTP_SESSIONS_MAX; k++) {
- spt = &slirp->tftp_sessions[k];
-
- if (!tftp_session_in_use(spt))
- goto found;
-
- /* sessions time out after 5 inactive seconds */
- if ((int)(curtime - spt->timestamp) > 5000) {
- tftp_session_terminate(spt);
- goto found;
- }
- }
-
- return -1;
-
- found:
- memset(spt, 0, sizeof(*spt));
- memcpy(&spt->client_addr, srcsas, sockaddr_size(srcsas));
- spt->fd = -1;
- spt->block_size = 512;
- spt->client_port = tp->udp.uh_sport;
- spt->slirp = slirp;
-
- tftp_session_update(spt);
-
- return k;
-}
-
-static int tftp_session_find(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp)
-{
- struct tftp_session *spt;
- int k;
-
- for (k = 0; k < TFTP_SESSIONS_MAX; k++) {
- spt = &slirp->tftp_sessions[k];
-
- if (tftp_session_in_use(spt)) {
- if (sockaddr_equal(&spt->client_addr, srcsas)) {
- if (spt->client_port == tp->udp.uh_sport) {
- return k;
- }
- }
- }
- }
-
- return -1;
-}
-
-static int tftp_read_data(struct tftp_session *spt, uint32_t block_nr,
- uint8_t *buf, int len)
-{
- int bytes_read = 0;
-
- if (spt->fd < 0) {
- spt->fd = open(spt->filename, O_RDONLY | O_BINARY);
- }
-
- if (spt->fd < 0) {
- return -1;
- }
-
- if (len) {
- lseek(spt->fd, block_nr * spt->block_size, SEEK_SET);
-
- bytes_read = read(spt->fd, buf, len);
- }
-
- return bytes_read;
-}
-
-static struct tftp_t *tftp_prep_mbuf_data(struct tftp_session *spt,
- struct mbuf *m)
-{
- struct tftp_t *tp;
-
- memset(m->m_data, 0, m->m_size);
-
- m->m_data += IF_MAXLINKHDR;
- if (spt->client_addr.ss_family == AF_INET6) {
- m->m_data += sizeof(struct ip6);
- } else {
- m->m_data += sizeof(struct ip);
- }
- tp = (void *)m->m_data;
- m->m_data += sizeof(struct udphdr);
-
- return tp;
-}
-
-static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m,
- struct tftp_t *recv_tp)
-{
- if (spt->client_addr.ss_family == AF_INET6) {
- struct sockaddr_in6 sa6, da6;
-
- sa6.sin6_addr = spt->slirp->vhost_addr6;
- sa6.sin6_port = recv_tp->udp.uh_dport;
- da6.sin6_addr = ((struct sockaddr_in6 *)&spt->client_addr)->sin6_addr;
- da6.sin6_port = spt->client_port;
-
- udp6_output(NULL, m, &sa6, &da6);
- } else {
- struct sockaddr_in sa4, da4;
-
- sa4.sin_addr = spt->slirp->vhost_addr;
- sa4.sin_port = recv_tp->udp.uh_dport;
- da4.sin_addr = ((struct sockaddr_in *)&spt->client_addr)->sin_addr;
- da4.sin_port = spt->client_port;
-
- udp_output(NULL, m, &sa4, &da4, IPTOS_LOWDELAY);
- }
-}
-
-static int tftp_send_oack(struct tftp_session *spt,
- const char *keys[], uint32_t values[], int nb,
- struct tftp_t *recv_tp)
-{
- struct mbuf *m;
- struct tftp_t *tp;
- int i, n = 0;
-
- m = m_get(spt->slirp);
-
- if (!m)
- return -1;
-
- tp = tftp_prep_mbuf_data(spt, m);
-
- tp->tp_op = htons(TFTP_OACK);
- for (i = 0; i < nb; i++) {
- n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",
- keys[i]) + 1;
- n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u",
- values[i]) + 1;
- }
-
- m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + n
- - sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
-
- return 0;
-}
-
-static void tftp_send_error(struct tftp_session *spt,
- uint16_t errorcode, const char *msg,
- struct tftp_t *recv_tp)
-{
- struct mbuf *m;
- struct tftp_t *tp;
-
- DEBUG_TFTP("tftp error msg: %s", msg);
-
- m = m_get(spt->slirp);
-
- if (!m) {
- goto out;
- }
-
- tp = tftp_prep_mbuf_data(spt, m);
-
- tp->tp_op = htons(TFTP_ERROR);
- tp->x.tp_error.tp_error_code = htons(errorcode);
- slirp_pstrcpy((char *)tp->x.tp_error.tp_msg, sizeof(tp->x.tp_error.tp_msg), msg);
-
- m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + 3 + strlen(msg)
- - sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
-
-out:
- tftp_session_terminate(spt);
-}
-
-static void tftp_send_next_block(struct tftp_session *spt,
- struct tftp_t *recv_tp)
-{
- struct mbuf *m;
- struct tftp_t *tp;
- int nobytes;
-
- m = m_get(spt->slirp);
-
- if (!m) {
- return;
- }
-
- tp = tftp_prep_mbuf_data(spt, m);
-
- tp->tp_op = htons(TFTP_DATA);
- tp->x.tp_data.tp_block_nr = htons((spt->block_nr + 1) & 0xffff);
-
- nobytes = tftp_read_data(spt, spt->block_nr, tp->x.tp_data.tp_buf,
- spt->block_size);
-
- if (nobytes < 0) {
- m_free(m);
-
- /* send "file not found" error back */
-
- tftp_send_error(spt, 1, "File not found", tp);
-
- return;
- }
-
- m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX - nobytes)
- - sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
-
- if (nobytes == spt->block_size) {
- tftp_session_update(spt);
- }
- else {
- tftp_session_terminate(spt);
- }
-
- spt->block_nr++;
-}
-
-static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp, int pktlen)
-{
- struct tftp_session *spt;
- int s, k;
- size_t prefix_len;
- char *req_fname;
- const char *option_name[2];
- uint32_t option_value[2];
- int nb_options = 0;
-
- /* check if a session already exists and if so terminate it */
- s = tftp_session_find(slirp, srcsas, tp);
- if (s >= 0) {
- tftp_session_terminate(&slirp->tftp_sessions[s]);
- }
-
- s = tftp_session_allocate(slirp, srcsas, tp);
-
- if (s < 0) {
- return;
- }
-
- spt = &slirp->tftp_sessions[s];
-
- /* unspecified prefix means service disabled */
- if (!slirp->tftp_prefix) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
-
- /* skip header fields */
- k = 0;
- pktlen -= offsetof(struct tftp_t, x.tp_buf);
-
- /* prepend tftp_prefix */
- prefix_len = strlen(slirp->tftp_prefix);
- spt->filename = g_malloc(prefix_len + TFTP_FILENAME_MAX + 2);
- memcpy(spt->filename, slirp->tftp_prefix, prefix_len);
- spt->filename[prefix_len] = '/';
-
- /* get name */
- req_fname = spt->filename + prefix_len + 1;
-
- while (1) {
- if (k >= TFTP_FILENAME_MAX || k >= pktlen) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
- req_fname[k] = tp->x.tp_buf[k];
- if (req_fname[k++] == '\0') {
- break;
- }
- }
-
- DEBUG_TFTP("tftp rrq file: %s", req_fname);
-
- /* check mode */
- if ((pktlen - k) < 6) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
-
- if (strcasecmp(&tp->x.tp_buf[k], "octet") != 0) {
- tftp_send_error(spt, 4, "Unsupported transfer mode", tp);
- return;
- }
-
- k += 6; /* skipping octet */
-
- /* do sanity checks on the filename */
- if (!strncmp(req_fname, "../", 3) ||
- req_fname[strlen(req_fname) - 1] == '/' ||
- strstr(req_fname, "/../")) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
-
- /* check if the file exists */
- if (tftp_read_data(spt, 0, NULL, 0) < 0) {
- tftp_send_error(spt, 1, "File not found", tp);
- return;
- }
-
- if (tp->x.tp_buf[pktlen - 1] != 0) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
-
- while (k < pktlen && nb_options < G_N_ELEMENTS(option_name)) {
- const char *key, *value;
-
- key = &tp->x.tp_buf[k];
- k += strlen(key) + 1;
-
- if (k >= pktlen) {
- tftp_send_error(spt, 2, "Access violation", tp);
- return;
- }
-
- value = &tp->x.tp_buf[k];
- k += strlen(value) + 1;
-
- if (strcasecmp(key, "tsize") == 0) {
- int tsize = atoi(value);
- struct stat stat_p;
-
- if (tsize == 0) {
- if (stat(spt->filename, &stat_p) == 0)
- tsize = stat_p.st_size;
- else {
- tftp_send_error(spt, 1, "File not found", tp);
- return;
- }
- }
-
- option_name[nb_options] = "tsize";
- option_value[nb_options] = tsize;
- nb_options++;
- } else if (strcasecmp(key, "blksize") == 0) {
- int blksize = atoi(value);
-
- /* Accept blksize up to our maximum size */
- if (blksize > 0) {
- spt->block_size = MIN(blksize, TFTP_BLOCKSIZE_MAX);
- option_name[nb_options] = "blksize";
- option_value[nb_options] = spt->block_size;
- nb_options++;
- }
- }
- }
-
- if (nb_options > 0) {
- assert(nb_options <= G_N_ELEMENTS(option_name));
- tftp_send_oack(spt, option_name, option_value, nb_options, tp);
- return;
- }
-
- spt->block_nr = 0;
- tftp_send_next_block(spt, tp);
-}
-
-static void tftp_handle_ack(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp, int pktlen)
-{
- int s;
-
- s = tftp_session_find(slirp, srcsas, tp);
-
- if (s < 0) {
- return;
- }
-
- tftp_send_next_block(&slirp->tftp_sessions[s], tp);
-}
-
-static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp, int pktlen)
-{
- int s;
-
- s = tftp_session_find(slirp, srcsas, tp);
-
- if (s < 0) {
- return;
- }
-
- tftp_session_terminate(&slirp->tftp_sessions[s]);
-}
-
-void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m)
-{
- struct tftp_t *tp = (struct tftp_t *)m->m_data;
-
- switch(ntohs(tp->tp_op)) {
- case TFTP_RRQ:
- tftp_handle_rrq(m->slirp, srcsas, tp, m->m_len);
- break;
-
- case TFTP_ACK:
- tftp_handle_ack(m->slirp, srcsas, tp, m->m_len);
- break;
-
- case TFTP_ERROR:
- tftp_handle_error(m->slirp, srcsas, tp, m->m_len);
- break;
- }
-}
+++ /dev/null
-/* tftp defines */
-
-#ifndef SLIRP_TFTP_H
-#define SLIRP_TFTP_H
-
-#define TFTP_SESSIONS_MAX 20
-
-#define TFTP_SERVER 69
-
-#define TFTP_RRQ 1
-#define TFTP_WRQ 2
-#define TFTP_DATA 3
-#define TFTP_ACK 4
-#define TFTP_ERROR 5
-#define TFTP_OACK 6
-
-#define TFTP_FILENAME_MAX 512
-#define TFTP_BLOCKSIZE_MAX 1428
-
-struct tftp_t {
- struct udphdr udp;
- uint16_t tp_op;
- union {
- struct {
- uint16_t tp_block_nr;
- uint8_t tp_buf[TFTP_BLOCKSIZE_MAX];
- } tp_data;
- struct {
- uint16_t tp_error_code;
- uint8_t tp_msg[TFTP_BLOCKSIZE_MAX];
- } tp_error;
- char tp_buf[TFTP_BLOCKSIZE_MAX + 2];
- } x;
-} __attribute__((packed));
-
-struct tftp_session {
- Slirp *slirp;
- char *filename;
- int fd;
- uint16_t block_size;
-
- struct sockaddr_storage client_addr;
- uint16_t client_port;
- uint32_t block_nr;
-
- int timestamp;
-};
-
-void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1988, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
- * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
- */
-
-/*
- * Changes and additions relating to SLiRP
- * Copyright (c) 1995 Danny Gasparovski.
- *
- * Please read the file COPYRIGHT for the
- * terms and conditions of the copyright.
- */
-
-#include "slirp.h"
-#include "ip_icmp.h"
-
-static uint8_t udp_tos(struct socket *so);
-
-void
-udp_init(Slirp *slirp)
-{
- slirp->udb.so_next = slirp->udb.so_prev = &slirp->udb;
- slirp->udp_last_so = &slirp->udb;
-}
-
-void udp_cleanup(Slirp *slirp)
-{
- while (slirp->udb.so_next != &slirp->udb) {
- udp_detach(slirp->udb.so_next);
- }
-}
-
-/* m->m_data points at ip packet header
- * m->m_len length ip packet
- * ip->ip_len length data (IPDU)
- */
-void
-udp_input(register struct mbuf *m, int iphlen)
-{
- Slirp *slirp = m->slirp;
- register struct ip *ip;
- register struct udphdr *uh;
- int len;
- struct ip save_ip;
- struct socket *so;
- struct sockaddr_storage lhost;
- struct sockaddr_in *lhost4;
-
- DEBUG_CALL("udp_input");
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("iphlen = %d", iphlen);
-
- /*
- * Strip IP options, if any; should skip this,
- * make available to user, and use on returned packets,
- * but we don't yet have a way to check the checksum
- * with options still present.
- */
- if(iphlen > sizeof(struct ip)) {
- ip_stripoptions(m, (struct mbuf *)0);
- iphlen = sizeof(struct ip);
- }
-
- /*
- * Get IP and UDP header together in first mbuf.
- */
- ip = mtod(m, struct ip *);
- uh = (struct udphdr *)((char *)ip + iphlen);
-
- /*
- * Make mbuf data length reflect UDP length.
- * If not enough data to reflect UDP length, drop.
- */
- len = ntohs((uint16_t)uh->uh_ulen);
-
- if (ip->ip_len != len) {
- if (len > ip->ip_len) {
- goto bad;
- }
- m_adj(m, len - ip->ip_len);
- ip->ip_len = len;
- }
-
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip = *ip;
- save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
-
- /*
- * Checksum extended UDP header and data.
- */
- if (uh->uh_sum) {
- memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr));
- ((struct ipovly *)ip)->ih_x1 = 0;
- ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
- if(cksum(m, len + sizeof(struct ip))) {
- goto bad;
- }
- }
-
- lhost.ss_family = AF_INET;
- lhost4 = (struct sockaddr_in *) &lhost;
- lhost4->sin_addr = ip->ip_src;
- lhost4->sin_port = uh->uh_sport;
-
- /*
- * handle DHCP/BOOTP
- */
- if (ntohs(uh->uh_dport) == BOOTP_SERVER &&
- (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
- ip->ip_dst.s_addr == 0xffffffff)) {
- bootp_input(m);
- goto bad;
- }
-
- /*
- * handle TFTP
- */
- if (ntohs(uh->uh_dport) == TFTP_SERVER &&
- ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) {
- m->m_data += iphlen;
- m->m_len -= iphlen;
- tftp_input(&lhost, m);
- m->m_data -= iphlen;
- m->m_len += iphlen;
- goto bad;
- }
-
- if (slirp->restricted) {
- goto bad;
- }
-
- /*
- * Locate pcb for datagram.
- */
- so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL);
-
- if (so == NULL) {
- /*
- * If there's no socket for this packet,
- * create one
- */
- so = socreate(slirp);
- if (udp_attach(so, AF_INET) == -1) {
- DEBUG_MISC(" udp_attach errno = %d-%s", errno, strerror(errno));
- sofree(so);
- goto bad;
- }
-
- /*
- * Setup fields
- */
- so->so_lfamily = AF_INET;
- so->so_laddr = ip->ip_src;
- so->so_lport = uh->uh_sport;
-
- if ((so->so_iptos = udp_tos(so)) == 0)
- so->so_iptos = ip->ip_tos;
-
- /*
- * XXXXX Here, check if it's in udpexec_list,
- * and if it is, do the fork_exec() etc.
- */
- }
-
- so->so_ffamily = AF_INET;
- so->so_faddr = ip->ip_dst; /* XXX */
- so->so_fport = uh->uh_dport; /* XXX */
-
- iphlen += sizeof(struct udphdr);
- m->m_len -= iphlen;
- m->m_data += iphlen;
-
- /*
- * Now we sendto() the packet.
- */
- if(sosendto(so,m) == -1) {
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip=save_ip;
- DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno));
- icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0,
- strerror(errno));
- goto bad;
- }
-
- m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
-
- /* restore the orig mbuf packet */
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip=save_ip;
- so->so_m=m; /* ICMP backup */
-
- return;
-bad:
- m_free(m);
-}
-
-int udp_output(struct socket *so, struct mbuf *m,
- struct sockaddr_in *saddr, struct sockaddr_in *daddr,
- int iptos)
-{
- register struct udpiphdr *ui;
- int error = 0;
-
- DEBUG_CALL("udp_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
- DEBUG_ARG("saddr = %s", inet_ntoa(saddr->sin_addr));
- DEBUG_ARG("daddr = %s", inet_ntoa(daddr->sin_addr));
-
- /*
- * Adjust for header
- */
- m->m_data -= sizeof(struct udpiphdr);
- m->m_len += sizeof(struct udpiphdr);
-
- /*
- * Fill in mbuf with extended UDP header
- * and addresses and length put into network format.
- */
- ui = mtod(m, struct udpiphdr *);
- memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr));
- ui->ui_x1 = 0;
- ui->ui_pr = IPPROTO_UDP;
- ui->ui_len = htons(m->m_len - sizeof(struct ip));
- /* XXXXX Check for from-one-location sockets, or from-any-location sockets */
- ui->ui_src = saddr->sin_addr;
- ui->ui_dst = daddr->sin_addr;
- ui->ui_sport = saddr->sin_port;
- ui->ui_dport = daddr->sin_port;
- ui->ui_ulen = ui->ui_len;
-
- /*
- * Stuff checksum and output datagram.
- */
- ui->ui_sum = 0;
- if ((ui->ui_sum = cksum(m, m->m_len)) == 0)
- ui->ui_sum = 0xffff;
- ((struct ip *)ui)->ip_len = m->m_len;
-
- ((struct ip *)ui)->ip_ttl = IPDEFTTL;
- ((struct ip *)ui)->ip_tos = iptos;
-
- error = ip_output(so, m);
-
- return (error);
-}
-
-int
-udp_attach(struct socket *so, unsigned short af)
-{
- so->s = slirp_socket(af, SOCK_DGRAM, 0);
- if (so->s != -1) {
- so->so_expire = curtime + SO_EXPIRE;
- insque(so, &so->slirp->udb);
- }
- return(so->s);
-}
-
-void
-udp_detach(struct socket *so)
-{
- so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque);
- closesocket(so->s);
- sofree(so);
-}
-
-static const struct tos_t udptos[] = {
- {0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
- {0, 0, 0, 0}
-};
-
-static uint8_t
-udp_tos(struct socket *so)
-{
- int i = 0;
-
- while(udptos[i].tos) {
- if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) ||
- (udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) {
- so->so_emu = udptos[i].emu;
- return udptos[i].tos;
- }
- i++;
- }
-
- return 0;
-}
-
-struct socket *
-udp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr,
- unsigned lport, int flags)
-{
- struct sockaddr_in addr;
- struct socket *so;
- socklen_t addrlen = sizeof(struct sockaddr_in);
-
- so = socreate(slirp);
- so->s = slirp_socket(AF_INET,SOCK_DGRAM,0);
- if (so->s < 0) {
- sofree(so);
- return NULL;
- }
- so->so_expire = curtime + SO_EXPIRE;
- insque(so, &slirp->udb);
-
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = haddr;
- addr.sin_port = hport;
-
- if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) {
- udp_detach(so);
- return NULL;
- }
- slirp_socket_set_fast_reuse(so->s);
-
- getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
- so->fhost.sin = addr;
- sotranslate_accept(so);
- so->so_lfamily = AF_INET;
- so->so_lport = lport;
- so->so_laddr.s_addr = laddr;
- if (flags != SS_FACCEPTONCE)
- so->so_expire = 0;
-
- so->so_state &= SS_PERSISTENT_MASK;
- so->so_state |= SS_ISFCONNECTED | flags;
-
- return so;
-}
+++ /dev/null
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)udp.h 8.1 (Berkeley) 6/10/93
- * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
- */
-
-#ifndef UDP_H
-#define UDP_H
-
-#define UDP_TTL 0x60
-#define UDP_UDPDATALEN 16192
-
-/*
- * Udp protocol header.
- * Per RFC 768, September, 1981.
- */
-struct udphdr {
- uint16_t uh_sport; /* source port */
- uint16_t uh_dport; /* destination port */
- int16_t uh_ulen; /* udp length */
- uint16_t uh_sum; /* udp checksum */
-};
-
-/*
- * UDP kernel structures and variables.
- */
-struct udpiphdr {
- struct ipovly ui_i; /* overlaid ip structure */
- struct udphdr ui_u; /* udp header */
-};
-#define ui_mbuf ui_i.ih_mbuf.mptr
-#define ui_x1 ui_i.ih_x1
-#define ui_pr ui_i.ih_pr
-#define ui_len ui_i.ih_len
-#define ui_src ui_i.ih_src
-#define ui_dst ui_i.ih_dst
-#define ui_sport ui_u.uh_sport
-#define ui_dport ui_u.uh_dport
-#define ui_ulen ui_u.uh_ulen
-#define ui_sum ui_u.uh_sum
-
-/*
- * Names for UDP sysctl objects
- */
-#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
-#define UDPCTL_MAXID 2
-
-struct mbuf;
-
-void udp_init(Slirp *);
-void udp_cleanup(Slirp *);
-void udp_input(register struct mbuf *, int);
-int udp_attach(struct socket *, unsigned short af);
-void udp_detach(struct socket *);
-struct socket * udp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned,
- int);
-int udp_output(struct socket *so, struct mbuf *m,
- struct sockaddr_in *saddr, struct sockaddr_in *daddr,
- int iptos);
-
-void udp6_input(register struct mbuf *);
-int udp6_output(struct socket *so, struct mbuf *m,
- struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr);
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2013
- * Guillaume Subiron
- */
-
-#include "slirp.h"
-#include "udp.h"
-#include "dhcpv6.h"
-
-void udp6_input(struct mbuf *m)
-{
- Slirp *slirp = m->slirp;
- struct ip6 *ip, save_ip;
- struct udphdr *uh;
- int iphlen = sizeof(struct ip6);
- int len;
- struct socket *so;
- struct sockaddr_in6 lhost;
-
- DEBUG_CALL("udp6_input");
- DEBUG_ARG("m = %p", m);
-
- if (slirp->restricted) {
- goto bad;
- }
-
- ip = mtod(m, struct ip6 *);
- m->m_len -= iphlen;
- m->m_data += iphlen;
- uh = mtod(m, struct udphdr *);
- m->m_len += iphlen;
- m->m_data -= iphlen;
-
- if (ip6_cksum(m)) {
- goto bad;
- }
-
- len = ntohs((uint16_t)uh->uh_ulen);
-
- /*
- * Make mbuf data length reflect UDP length.
- * If not enough data to reflect UDP length, drop.
- */
- if (ntohs(ip->ip_pl) != len) {
- if (len > ntohs(ip->ip_pl)) {
- goto bad;
- }
- m_adj(m, len - ntohs(ip->ip_pl));
- ip->ip_pl = htons(len);
- }
-
- /*
- * Save a copy of the IP header in case we want restore it
- * for sending an ICMP error message in response.
- */
- save_ip = *ip;
-
- /* Locate pcb for datagram. */
- lhost.sin6_family = AF_INET6;
- lhost.sin6_addr = ip->ip_src;
- lhost.sin6_port = uh->uh_sport;
-
- /* handle DHCPv6 */
- if (ntohs(uh->uh_dport) == DHCPV6_SERVER_PORT &&
- (in6_equal(&ip->ip_dst, &slirp->vhost_addr6) ||
- in6_dhcp_multicast(&ip->ip_dst))) {
- m->m_data += iphlen;
- m->m_len -= iphlen;
- dhcpv6_input(&lhost, m);
- m->m_data -= iphlen;
- m->m_len += iphlen;
- goto bad;
- }
-
- /* handle TFTP */
- if (ntohs(uh->uh_dport) == TFTP_SERVER &&
- !memcmp(ip->ip_dst.s6_addr, slirp->vhost_addr6.s6_addr, 16)) {
- m->m_data += iphlen;
- m->m_len -= iphlen;
- tftp_input((struct sockaddr_storage *)&lhost, m);
- m->m_data -= iphlen;
- m->m_len += iphlen;
- goto bad;
- }
-
- so = solookup(&slirp->udp_last_so, &slirp->udb,
- (struct sockaddr_storage *) &lhost, NULL);
-
- if (so == NULL) {
- /* If there's no socket for this packet, create one. */
- so = socreate(slirp);
- if (udp_attach(so, AF_INET6) == -1) {
- DEBUG_MISC(" udp6_attach errno = %d-%s", errno, strerror(errno));
- sofree(so);
- goto bad;
- }
-
- /* Setup fields */
- so->so_lfamily = AF_INET6;
- so->so_laddr6 = ip->ip_src;
- so->so_lport6 = uh->uh_sport;
- }
-
- so->so_ffamily = AF_INET6;
- so->so_faddr6 = ip->ip_dst; /* XXX */
- so->so_fport6 = uh->uh_dport; /* XXX */
-
- iphlen += sizeof(struct udphdr);
- m->m_len -= iphlen;
- m->m_data += iphlen;
-
- /*
- * Now we sendto() the packet.
- */
- if (sosendto(so, m) == -1) {
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip = save_ip;
- DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno));
- icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE);
- goto bad;
- }
-
- m_free(so->so_m); /* used for ICMP if error on sorecvfrom */
-
- /* restore the orig mbuf packet */
- m->m_len += iphlen;
- m->m_data -= iphlen;
- *ip = save_ip;
- so->so_m = m;
-
- return;
-bad:
- m_free(m);
-}
-
-int udp6_output(struct socket *so, struct mbuf *m,
- struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr)
-{
- struct ip6 *ip;
- struct udphdr *uh;
-
- DEBUG_CALL("udp6_output");
- DEBUG_ARG("so = %p", so);
- DEBUG_ARG("m = %p", m);
-
- /* adjust for header */
- m->m_data -= sizeof(struct udphdr);
- m->m_len += sizeof(struct udphdr);
- uh = mtod(m, struct udphdr *);
- m->m_data -= sizeof(struct ip6);
- m->m_len += sizeof(struct ip6);
- ip = mtod(m, struct ip6 *);
-
- /* Build IP header */
- ip->ip_pl = htons(m->m_len - sizeof(struct ip6));
- ip->ip_nh = IPPROTO_UDP;
- ip->ip_src = saddr->sin6_addr;
- ip->ip_dst = daddr->sin6_addr;
-
- /* Build UDP header */
- uh->uh_sport = saddr->sin6_port;
- uh->uh_dport = daddr->sin6_port;
- uh->uh_ulen = ip->ip_pl;
- uh->uh_sum = 0;
- uh->uh_sum = ip6_cksum(m);
- if (uh->uh_sum == 0) {
- uh->uh_sum = 0xffff;
- }
-
- return ip6_output(so, m, 0);
-}
+++ /dev/null
-/*
- * util.c (mostly based on QEMU os-win32.c)
- *
- * Copyright (c) 2003-2008 Fabrice Bellard
- * Copyright (c) 2010-2016 Red Hat, Inc.
- *
- * QEMU library functions for win32 which are shared between QEMU and
- * the QEMU tools.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "util.h"
-
-#include <glib.h>
-#include <fcntl.h>
-#include <stdint.h>
-
-#if defined(_WIN32) && !defined(WITH_QEMU)
-int inet_aton(const char *cp, struct in_addr *ia)
-{
- uint32_t addr = inet_addr(cp);
- if (addr == 0xffffffff) {
- return 0;
- }
- ia->s_addr = addr;
- return 1;
-}
-#endif
-
-void slirp_set_nonblock(int fd)
-{
-#ifndef _WIN32
- int f;
- f = fcntl(fd, F_GETFL);
- assert(f != -1);
- f = fcntl(fd, F_SETFL, f | O_NONBLOCK);
- assert(f != -1);
-#else
- unsigned long opt = 1;
- ioctlsocket(fd, FIONBIO, &opt);
-#endif
-}
-
-static void slirp_set_cloexec(int fd)
-{
-#ifndef _WIN32
- int f;
- f = fcntl(fd, F_GETFD);
- assert(f != -1);
- f = fcntl(fd, F_SETFD, f | FD_CLOEXEC);
- assert(f != -1);
-#endif
-}
-
-/*
- * Opens a socket with FD_CLOEXEC set
- */
-int slirp_socket(int domain, int type, int protocol)
-{
- int ret;
-
-#ifdef SOCK_CLOEXEC
- ret = socket(domain, type | SOCK_CLOEXEC, protocol);
- if (ret != -1 || errno != EINVAL) {
- return ret;
- }
-#endif
- ret = socket(domain, type, protocol);
- if (ret >= 0) {
- slirp_set_cloexec(ret);
- }
-
- return ret;
-}
-
-#ifdef _WIN32
-static int socket_error(void)
-{
- switch (WSAGetLastError()) {
- case 0:
- return 0;
- case WSAEINTR:
- return EINTR;
- case WSAEINVAL:
- return EINVAL;
- case WSA_INVALID_HANDLE:
- return EBADF;
- case WSA_NOT_ENOUGH_MEMORY:
- return ENOMEM;
- case WSA_INVALID_PARAMETER:
- return EINVAL;
- case WSAENAMETOOLONG:
- return ENAMETOOLONG;
- case WSAENOTEMPTY:
- return ENOTEMPTY;
- case WSAEWOULDBLOCK:
- /* not using EWOULDBLOCK as we don't want code to have
- * to check both EWOULDBLOCK and EAGAIN */
- return EAGAIN;
- case WSAEINPROGRESS:
- return EINPROGRESS;
- case WSAEALREADY:
- return EALREADY;
- case WSAENOTSOCK:
- return ENOTSOCK;
- case WSAEDESTADDRREQ:
- return EDESTADDRREQ;
- case WSAEMSGSIZE:
- return EMSGSIZE;
- case WSAEPROTOTYPE:
- return EPROTOTYPE;
- case WSAENOPROTOOPT:
- return ENOPROTOOPT;
- case WSAEPROTONOSUPPORT:
- return EPROTONOSUPPORT;
- case WSAEOPNOTSUPP:
- return EOPNOTSUPP;
- case WSAEAFNOSUPPORT:
- return EAFNOSUPPORT;
- case WSAEADDRINUSE:
- return EADDRINUSE;
- case WSAEADDRNOTAVAIL:
- return EADDRNOTAVAIL;
- case WSAENETDOWN:
- return ENETDOWN;
- case WSAENETUNREACH:
- return ENETUNREACH;
- case WSAENETRESET:
- return ENETRESET;
- case WSAECONNABORTED:
- return ECONNABORTED;
- case WSAECONNRESET:
- return ECONNRESET;
- case WSAENOBUFS:
- return ENOBUFS;
- case WSAEISCONN:
- return EISCONN;
- case WSAENOTCONN:
- return ENOTCONN;
- case WSAETIMEDOUT:
- return ETIMEDOUT;
- case WSAECONNREFUSED:
- return ECONNREFUSED;
- case WSAELOOP:
- return ELOOP;
- case WSAEHOSTUNREACH:
- return EHOSTUNREACH;
- default:
- return EIO;
- }
-}
-
-#undef ioctlsocket
-int slirp_ioctlsocket_wrap(int fd, int req, void *val)
-{
- int ret;
- ret = ioctlsocket(fd, req, val);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef closesocket
-int slirp_closesocket_wrap(int fd)
-{
- int ret;
- ret = closesocket(fd);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef connect
-int slirp_connect_wrap(int sockfd, const struct sockaddr *addr, int addrlen)
-{
- int ret;
- ret = connect(sockfd, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef listen
-int slirp_listen_wrap(int sockfd, int backlog)
-{
- int ret;
- ret = listen(sockfd, backlog);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef bind
-int slirp_bind_wrap(int sockfd, const struct sockaddr *addr, int addrlen)
-{
- int ret;
- ret = bind(sockfd, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef socket
-int slirp_socket_wrap(int domain, int type, int protocol)
-{
- int ret;
- ret = socket(domain, type, protocol);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef accept
-int slirp_accept_wrap(int sockfd, struct sockaddr *addr, int *addrlen)
-{
- int ret;
- ret = accept(sockfd, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef shutdown
-int slirp_shutdown_wrap(int sockfd, int how)
-{
- int ret;
- ret = shutdown(sockfd, how);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef getsockopt
-int slirp_getsockopt_wrap(int sockfd, int level, int optname,
- void *optval, int *optlen)
-{
- int ret;
- ret = getsockopt(sockfd, level, optname, optval, optlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef setsockopt
-int slirp_setsockopt_wrap(int sockfd, int level, int optname,
- const void *optval, int optlen)
-{
- int ret;
- ret = setsockopt(sockfd, level, optname, optval, optlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef getpeername
-int slirp_getpeername_wrap(int sockfd, struct sockaddr *addr,
- int *addrlen)
-{
- int ret;
- ret = getpeername(sockfd, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef getsockname
-int slirp_getsockname_wrap(int sockfd, struct sockaddr *addr,
- int *addrlen)
-{
- int ret;
- ret = getsockname(sockfd, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef send
-ssize_t slirp_send_wrap(int sockfd, const void *buf, size_t len, int flags)
-{
- int ret;
- ret = send(sockfd, buf, len, flags);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef sendto
-ssize_t slirp_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
- const struct sockaddr *addr, int addrlen)
-{
- int ret;
- ret = sendto(sockfd, buf, len, flags, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef recv
-ssize_t slirp_recv_wrap(int sockfd, void *buf, size_t len, int flags)
-{
- int ret;
- ret = recv(sockfd, buf, len, flags);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-
-#undef recvfrom
-ssize_t slirp_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
- struct sockaddr *addr, int *addrlen)
-{
- int ret;
- ret = recvfrom(sockfd, buf, len, flags, addr, addrlen);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
-#endif /* WIN32 */
-
-void slirp_pstrcpy(char *buf, int buf_size, const char *str)
-{
- int c;
- char *q = buf;
-
- if (buf_size <= 0)
- return;
-
- for(;;) {
- c = *str++;
- if (c == 0 || q >= buf + buf_size - 1)
- break;
- *q++ = c;
- }
- *q = '\0';
-}
+++ /dev/null
-/*
- * Copyright (c) 2003-2008 Fabrice Bellard
- * Copyright (c) 2010-2019 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#ifndef UTIL_H_
-#define UTIL_H_
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <assert.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <inttypes.h>
-
-#ifdef _WIN32
-#include <winsock2.h>
-#include <windows.h>
-#else
-#include <sys/socket.h>
-#include <netinet/tcp.h>
-#include <netinet/in.h>
-#endif
-
-#if defined(_WIN32)
-# define SLIRP_PACKED __attribute__((gcc_struct, packed))
-#else
-# define SLIRP_PACKED __attribute__((packed))
-#endif
-
-#ifndef DIV_ROUND_UP
-#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
-#endif
-
-#ifndef container_of
-#define container_of(ptr, type, member) __extension__ ({ \
- void *__mptr = (void *)(ptr); \
- ((type *)(__mptr - offsetof(type, member))); })
-#endif
-
-#if defined(_WIN32) /* CONFIG_IOVEC */
-# if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */
-struct iovec {
- void *iov_base;
- size_t iov_len;
-};
-# endif
-#else
-#include <sys/uio.h>
-#endif
-
-#define SCALE_MS 1000000
-
-#define ETH_ALEN 6
-#define ETH_HLEN 14
-#define ETH_P_IP (0x0800) /* Internet Protocol packet */
-#define ETH_P_ARP (0x0806) /* Address Resolution packet */
-#define ETH_P_IPV6 (0x86dd)
-#define ETH_P_VLAN (0x8100)
-#define ETH_P_DVLAN (0x88a8)
-#define ETH_P_NCSI (0x88f8)
-#define ETH_P_UNKNOWN (0xffff)
-
-/* FIXME: remove me when made standalone */
-#ifdef _WIN32
-#undef accept
-#undef bind
-#undef closesocket
-#undef connect
-#undef getpeername
-#undef getsockname
-#undef getsockopt
-#undef ioctlsocket
-#undef listen
-#undef recv
-#undef recvfrom
-#undef send
-#undef sendto
-#undef setsockopt
-#undef shutdown
-#undef socket
-#endif
-
-#ifdef _WIN32
-#define connect slirp_connect_wrap
-int slirp_connect_wrap(int fd, const struct sockaddr *addr, int addrlen);
-#define listen slirp_listen_wrap
-int slirp_listen_wrap(int fd, int backlog);
-#define bind slirp_bind_wrap
-int slirp_bind_wrap(int fd, const struct sockaddr *addr, int addrlen);
-#define socket slirp_socket_wrap
-int slirp_socket_wrap(int domain, int type, int protocol);
-#define accept slirp_accept_wrap
-int slirp_accept_wrap(int fd, struct sockaddr *addr, int *addrlen);
-#define shutdown slirp_shutdown_wrap
-int slirp_shutdown_wrap(int fd, int how);
-#define getpeername slirp_getpeername_wrap
-int slirp_getpeername_wrap(int fd, struct sockaddr *addr, int *addrlen);
-#define getsockname slirp_getsockname_wrap
-int slirp_getsockname_wrap(int fd, struct sockaddr *addr, int *addrlen);
-#define send slirp_send_wrap
-ssize_t slirp_send_wrap(int fd, const void *buf, size_t len, int flags);
-#define sendto slirp_sendto_wrap
-ssize_t slirp_sendto_wrap(int fd, const void *buf, size_t len, int flags,
- const struct sockaddr *dest_addr, int addrlen);
-#define recv slirp_recv_wrap
-ssize_t slirp_recv_wrap(int fd, void *buf, size_t len, int flags);
-#define recvfrom slirp_recvfrom_wrap
-ssize_t slirp_recvfrom_wrap(int fd, void *buf, size_t len, int flags,
- struct sockaddr *src_addr, int *addrlen);
-#define closesocket slirp_closesocket_wrap
-int slirp_closesocket_wrap(int fd);
-#define ioctlsocket slirp_ioctlsocket_wrap
-int slirp_ioctlsocket_wrap(int fd, int req, void *val);
-#define getsockopt slirp_getsockopt_wrap
-int slirp_getsockopt_wrap(int sockfd, int level, int optname,
- void *optval, int *optlen);
-#define setsockopt slirp_setsockopt_wrap
-int slirp_setsockopt_wrap(int sockfd, int level, int optname,
- const void *optval, int optlen);
-
-int inet_aton(const char *cp, struct in_addr *ia);
-#else
-#define closesocket(s) close(s)
-#define ioctlsocket(s, r, v) ioctl(s, r, v)
-#endif
-
-int slirp_socket(int domain, int type, int protocol);
-void slirp_set_nonblock(int fd);
-
-static inline int slirp_socket_set_nodelay(int fd)
-{
- int v = 1;
- return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
-}
-
-static inline int slirp_socket_set_fast_reuse(int fd)
-{
-#ifndef _WIN32
- int v = 1;
- return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v));
-#else
- /* Enabling the reuse of an endpoint that was used by a socket still in
- * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
- * fast reuse is the default and SO_REUSEADDR does strange things. So we
- * don't have to do anything here. More info can be found at:
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
- return 0;
-#endif
-}
-
-void slirp_pstrcpy(char *buf, int buf_size, const char *str);
-
-#endif
import os
import sys
+import uuid
import avocado
-SRC_ROOT_DIR = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
-SRC_ROOT_DIR = os.path.abspath(os.path.dirname(SRC_ROOT_DIR))
-sys.path.append(os.path.join(SRC_ROOT_DIR, 'scripts'))
+SRC_ROOT_DIR = os.path.join(os.path.dirname(__file__), '..', '..', '..')
+sys.path.append(os.path.join(SRC_ROOT_DIR, 'python'))
from qemu import QEMUMachine
class Test(avocado.Test):
def setUp(self):
- self.vm = None
+ self._vms = {}
self.qemu_bin = self.params.get('qemu_bin',
default=pick_default_qemu_bin())
if self.qemu_bin is None:
self.cancel("No QEMU binary defined or found in the source tree")
- self.vm = QEMUMachine(self.qemu_bin)
+
+ def _new_vm(self, *args):
+ vm = QEMUMachine(self.qemu_bin)
+ if args:
+ vm.add_args(*args)
+ return vm
+
+ @property
+ def vm(self):
+ return self.get_vm(name='default')
+
+ def get_vm(self, *args, name=None):
+ if not name:
+ name = str(uuid.uuid4())
+ if self._vms.get(name) is None:
+ self._vms[name] = self._new_vm(*args)
+ return self._vms[name]
def tearDown(self):
- if self.vm is not None:
- self.vm.shutdown()
+ for vm in self._vms.values():
+ vm.shutdown()
Boots a x86_64 Linux kernel and checks that the console is operational
and the kernel command line is properly passed from QEMU to the kernel
- :avocado: enable
:avocado: tags=x86_64
"""
# This work is licensed under the terms of the GNU GPL, version 2 or
# later. See the COPYING file in the top-level directory.
+import logging
import tempfile
from avocado.utils.process import run
"""
Checks QEMU evaluates correctly the initrd file passed as -initrd option.
- :avocado: enable
:avocado: tags=x86_64
"""
- timeout = 60
+ timeout = 300
- def test_with_2gib_file_should_exit_error_msg(self):
+ def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
"""
Pretends to boot QEMU with an initrd file with size of 2GiB
and expect it exits with error message.
+ Fedora-18 shipped with linux-3.6 which have not supported xloadflags
+ cannot support more than 2GiB initrd.
"""
- kernel_url = ('https://mirrors.kernel.org/fedora/releases/28/'
- 'Everything/x86_64/os/images/pxeboot/vmlinuz')
- kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
+ kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
+ 'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
+ kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
max_size = 2 * (1024 ** 3) - 1
initrd.seek(max_size)
initrd.write(b'\0')
initrd.flush()
- cmd = "%s -kernel %s -initrd %s" % (self.qemu_bin, kernel_path,
- initrd.name)
+ cmd = "%s -kernel %s -initrd %s -m 4096" % (
+ self.qemu_bin, kernel_path, initrd.name)
res = run(cmd, ignore_status=True)
self.assertEqual(res.exit_status, 1)
expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
max_size + 1)
self.assertRegex(res.stderr_text, expected_msg)
+
+ def test_with_2gib_file_should_work_with_linux_v4_16(self):
+ """
+ QEMU has supported up to 4 GiB initrd for recent kernel
+ Expect guest can reach 'Unpacking initramfs...'
+ """
+ kernel_url = ('https://mirrors.kernel.org/fedora/releases/28/'
+ 'Everything/x86_64/os/images/pxeboot/vmlinuz')
+ kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
+ kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
+ max_size = 2 * (1024 ** 3) + 1
+
+ with tempfile.NamedTemporaryFile() as initrd:
+ initrd.seek(max_size)
+ initrd.write(b'\0')
+ initrd.flush()
+
+ self.vm.set_machine('pc')
+ self.vm.set_console()
+ kernel_command_line = 'console=ttyS0'
+ self.vm.add_args('-kernel', kernel_path,
+ '-append', kernel_command_line,
+ '-initrd', initrd.name,
+ '-m', '5120')
+ self.vm.launch()
+ console = self.vm.console_socket.makefile()
+ console_logger = logging.getLogger('console')
+ while True:
+ msg = console.readline()
+ console_logger.debug(msg.strip())
+ if 'Unpacking initramfs...' in msg:
+ break
+ if 'Kernel panic - not syncing' in msg:
+ self.fail("Kernel panic reached")
--- /dev/null
+# Migration test
+#
+# Copyright (c) 2019 Red Hat, Inc.
+#
+# Authors:
+# Cleber Rosa <crosa@redhat.com>
+# Caio Carrara <ccarrara@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later. See the COPYING file in the top-level directory.
+
+
+from avocado_qemu import Test
+
+from avocado.utils import network
+from avocado.utils import wait
+
+
+class Migration(Test):
+ """
+ :avocado: enable
+ """
+
+ timeout = 10
+
+ @staticmethod
+ def migration_finished(vm):
+ return vm.command('query-migrate')['status'] in ('completed', 'failed')
+
+ def _get_free_port(self):
+ port = network.find_free_port()
+ if port is None:
+ self.cancel('Failed to find a free port')
+ return port
+
+
+ def test_migration_with_tcp_localhost(self):
+ source_vm = self.get_vm()
+ dest_uri = 'tcp:localhost:%u' % self._get_free_port()
+ dest_vm = self.get_vm('-incoming', dest_uri)
+ dest_vm.launch()
+ source_vm.launch()
+ source_vm.qmp('migrate', uri=dest_uri)
+ wait.wait_for(
+ self.migration_finished,
+ timeout=self.timeout,
+ step=0.1,
+ args=(source_vm,)
+ )
+ self.assertEqual(dest_vm.command('query-migrate')['status'], 'completed')
+ self.assertEqual(source_vm.command('query-migrate')['status'], 'completed')
+ self.assertEqual(dest_vm.command('query-status')['status'], 'running')
+ self.assertEqual(source_vm.command('query-status')['status'], 'postmigrate')
class Version(Test):
"""
- :avocado: enable
:avocado: tags=quick
"""
def test_qmp_human_info_version(self):
import sys
import os
-sys.path.append(os.path.join(os.path.dirname(__file__), "..", "..", "scripts"))
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
from qemu import QEMUMachine
from avocado_qemu import Test
same device tree created by `disable-modern` and
`disable-legacy`.
- :avocado: enable
:avocado: tags=x86_64
"""
class Vnc(Test):
"""
- :avocado: enable
:avocado: tags=vnc,quick
"""
def test_no_vnc(self):
import sys
import time
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'scripts'))
-import qemu
-import qmp.qmp
from guestperf.progress import Progress, ProgressStats
from guestperf.report import Report
from guestperf.timings import TimingRecord, Timings
+sys.path.append(os.path.join(os.path.dirname(__file__),
+ '..', '..', '..', 'python'))
+import qemu
+
class Engine(object):
import iotests
from iotests import qemu_img_create, qemu_io, file_path, log
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
from qemu import QEMUMachine
import iotests
from iotests import log
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
from qemu import QEMUMachine
import io
from collections import OrderedDict
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
-import qtest
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
+from qemu import qtest
# This will not work if arguments contain spaces but is necessary if we
# Add Python module requirements, one per line, to be installed
# in the tests/venv Python virtual environment. For more info,
# refer to: https://pip.pypa.io/en/stable/user_guide/#id1
-avocado-framework==65.0
+avocado-framework==68.0
import logging
import time
import datetime
-sys.path.append(os.path.join(os.path.dirname(__file__), "..", "..", "scripts"))
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
from qemu import QEMUMachine, kvm_available
import subprocess
import hashlib
util-obj-y += lockcnt.o
util-obj-y += aiocb.o async.o aio-wait.o thread-pool.o qemu-timer.o
util-obj-y += main-loop.o iohandler.o
+main-loop.o-cflags := $(SLIRP_CFLAGS)
util-obj-$(call lnot,$(CONFIG_ATOMIC64)) += atomic64.o
util-obj-$(CONFIG_POSIX) += aio-posix.o
util-obj-$(CONFIG_POSIX) += compatfd.o
#include "qapi/error.h"
#include "qemu/cutils.h"
#include "qemu/timer.h"
-#include "qemu/sockets.h" // struct in_addr needed for libslirp.h
#include "sysemu/qtest.h"
#include "sysemu/cpus.h"
#include "sysemu/replay.h"
-#include "slirp/libslirp.h"
#include "qemu/main-loop.h"
#include "block/aio.h"
#include "qemu/error-report.h"
#include "disas/disas.h"
-
-#include "slirp/libslirp.h"
-
#include "trace-root.h"
#include "trace/control.h"
#include "qemu/queue.h"
projects / mirror_qemu.git / commitdiff