3 # Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 Nicira, Inc.
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at:
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 dnl Set OVS DPCLS Autovalidator as default subtable search at compile time?
18 dnl This enables automatically running all unit tests with all DPCLS
20 AC_DEFUN([OVS_CHECK_DPCLS_AUTOVALIDATOR], [
21 AC_ARG_ENABLE([autovalidator],
22 [AC_HELP_STRING([--enable-autovalidator], [Enable DPCLS autovalidator as default subtable search implementation.])],
23 [autovalidator=yes],[autovalidator=no])
24 AC_MSG_CHECKING([whether DPCLS Autovalidator is default implementation])
25 if test "$autovalidator" != yes; then
28 OVS_CFLAGS="$OVS_CFLAGS -DDPCLS_AUTOVALIDATOR_DEFAULT"
34 AC_DEFUN([OVS_ENABLE_WERROR],
37 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
38 [], [enable_Werror=no])
39 AC_CONFIG_COMMANDS_PRE(
40 [if test "X$enable_Werror" = Xyes; then
41 OVS_CFLAGS="$OVS_CFLAGS -Werror"
44 # Unless --enable-Werror is specified, report but do not fail the build
45 # for errors reported by flake8.
46 if test "X$enable_Werror" = Xyes; then
51 AC_SUBST([FLAKE8_WERROR])
53 # If --enable-Werror is specified, fail the build on sparse warnings.
54 if test "X$enable_Werror" = Xyes; then
55 SPARSE_WERROR=-Wsparse-error
59 AC_SUBST([SPARSE_WERROR])])
63 dnl Configure linux kernel source tree
64 AC_DEFUN([OVS_CHECK_LINUX], [
66 [AC_HELP_STRING([--with-linux=/path/to/linux],
67 [Specify the Linux kernel build directory])])
68 AC_ARG_WITH([linux-source],
69 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
70 [Specify the Linux kernel source directory
71 (usually figured out automatically from build
74 # Deprecated equivalents to --with-linux, --with-linux-source.
76 AC_ARG_WITH([l26-source])
78 if test X"$with_linux" != X; then
80 elif test X"$with_l26" != X; then
82 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
87 if test X"$KBUILD" != X; then
88 if test X"$with_linux_source" != X; then
89 KSRC=$with_linux_source
90 elif test X"$with_l26_source" != X; then
92 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
96 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
97 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
100 if test -n "$KBUILD"; then
101 KBUILD=`eval echo "$KBUILD"`
104 *) KBUILD=`pwd`/$KBUILD ;;
107 # The build directory is what the user provided.
108 # Make sure that it exists.
109 AC_MSG_CHECKING([for Linux build directory])
110 if test -d "$KBUILD"; then
111 AC_MSG_RESULT([$KBUILD])
115 AC_ERROR([source dir $KBUILD doesn't exist])
118 # Debian breaks kernel headers into "source" header and "build" headers.
119 # We want the source headers, but $KBUILD gives us the "build" headers.
120 # Use heuristics to find the source headers.
121 AC_MSG_CHECKING([for Linux source directory])
122 if test -n "$KSRC"; then
123 KSRC=`eval echo "$KSRC"`
126 *) KSRC=`pwd`/$KSRC ;;
128 if test ! -e $KSRC/include/linux/kernel.h; then
129 AC_MSG_ERROR([$KSRC is not a kernel source directory])
133 if test ! -e $KSRC/include/linux/kernel.h; then
134 # Debian kernel build Makefiles tend to include a line of the form:
135 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
136 # First try to extract the source directory from this line.
137 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
138 if test ! -e "$KSRC"/include/linux/kernel.h; then
139 # Didn't work. Fall back to name-based heuristics that used to work.
140 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
142 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
145 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
150 if test ! -e "$KSRC"/include/linux/kernel.h; then
151 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
154 AC_MSG_RESULT([$KSRC])
156 AC_MSG_CHECKING([for kernel version])
157 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
158 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
159 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
160 if test X"$version" = X || test X"$patchlevel" = X; then
161 AC_ERROR([cannot determine kernel version])
162 elif test X"$sublevel" = X; then
163 kversion=$version.$patchlevel
165 kversion=$version.$patchlevel.$sublevel
167 AC_MSG_RESULT([$kversion])
169 if test "$version" -ge 5; then
170 if test "$version" = 5 && test "$patchlevel" -le 8; then
173 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.8.x is not supported (please refer to the FAQ for advice)])
175 elif test "$version" = 4; then
177 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
180 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
182 if (test ! -e "$KBUILD"/include/linux/version.h && \
183 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
184 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
185 test ! -e "$KBUILD"/include/generated/autoconf.h); then
186 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
188 OVS_CHECK_LINUX_COMPAT
190 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
193 dnl OVS_CHECK_LINUX_NETLINK
195 dnl Configure Linux netlink compat.
196 AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [
198 AC_LANG_PROGRAM([#include <linux/netlink.h>], [
199 struct nla_bitfield32 x = { 0 };
201 [AC_DEFINE([HAVE_NLA_BITFIELD32], [1],
202 [Define to 1 if struct nla_bitfield32 is available.])])
205 dnl OVS_CHECK_LINUX_TC
207 dnl Configure Linux tc compat.
208 AC_DEFUN([OVS_CHECK_LINUX_TC], [
210 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
211 int x = TCA_ACT_FLAGS;
213 [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1],
214 [Define to 1 if TCA_ACT_FLAGS is available.])])
216 AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>])
219 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
220 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
222 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
223 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
226 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
227 int x = TCA_MPLS_TTL;
229 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
230 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
233 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
234 int x = TCA_TUNNEL_KEY_ENC_TTL;
236 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
237 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
240 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
241 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
243 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
244 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
247 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
248 int x = TCA_SKBEDIT_FLAGS;
250 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
251 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
254 dnl OVS_CHECK_LINUX_SCTP_CT
256 dnl Checks for kernels which need additional SCTP state
257 AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
259 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
260 #include <linux/netfilter/nfnetlink_conntrack.h>
261 #include <linux/netfilter/nf_conntrack_common.h>
262 #include <linux/netfilter/nf_conntrack_sctp.h>], [
263 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
265 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
266 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
269 dnl OVS_CHECK_LINUX_VIRTIO_TYPES
271 dnl Checks for kernels that need virtio_types definition.
272 AC_DEFUN([OVS_CHECK_LINUX_VIRTIO_TYPES], [
274 AC_LANG_PROGRAM([#include <linux/virtio_types.h>], [
277 [AC_DEFINE([HAVE_VIRTIO_TYPES], [1],
278 [Define to 1 if __virtio16 is available.])])
281 dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
283 dnl Check for a function in a library list.
284 AC_DEFUN([OVS_FIND_DEPENDENCY], [
285 AC_SEARCH_LIBS([$1], [$2], [], [
286 AC_MSG_ERROR([unable to find $3, install the dependency package])
290 dnl OVS_CHECK_LINUX_AF_XDP
292 dnl Check both Linux kernel AF_XDP and libbpf support
293 AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
294 AC_ARG_ENABLE([afxdp],
295 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
296 [], [enable_afxdp=no])
297 AC_MSG_CHECKING([whether AF_XDP is enabled])
298 if test "$enable_afxdp" != yes; then
305 AC_CHECK_HEADER([bpf/libbpf.h], [],
306 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
308 AC_CHECK_HEADER([linux/if_xdp.h], [],
309 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
311 AC_CHECK_HEADER([bpf/xsk.h], [],
312 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
314 AC_CHECK_FUNCS([pthread_spin_lock], [],
315 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
317 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
319 AC_DEFINE([HAVE_AF_XDP], [1],
320 [Define to 1 if AF_XDP support is available and enabled.])
321 LIBBPF_LDADD=" -lbpf -lelf"
322 AC_SUBST([LIBBPF_LDADD])
324 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
325 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
326 [XDP need wakeup support detected in xsk.h.])
327 ], [], [[#include <bpf/xsk.h>]])
329 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
334 dnl Configure DPDK source tree
335 AC_DEFUN([OVS_CHECK_DPDK], [
337 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
338 [Specify the DPDK build directory])],
341 AC_MSG_CHECKING([whether dpdk is enabled])
342 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
349 DPDK_AUTO_DISCOVER="true"
350 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
351 DPDK_INCLUDE="$DPDK_CFLAGS"
352 DPDK_LIB="$DPDK_LIBS"], [
353 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
357 DPDK_AUTO_DISCOVER="false"
358 DPDK_INCLUDE_PATH="$with_dpdk/include"
359 # If 'with_dpdk' is passed install directory, point to headers
360 # installed in $DESTDIR/$prefix/include/dpdk
361 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
362 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
363 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
364 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
366 DPDK_LIB_DIR="$with_dpdk/lib"
371 ovs_save_CFLAGS="$CFLAGS"
372 ovs_save_LDFLAGS="$LDFLAGS"
373 CFLAGS="$CFLAGS $DPDK_INCLUDE"
374 if test "$DPDK_AUTO_DISCOVER" = "false"; then
375 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
378 AC_CHECK_HEADERS([rte_config.h], [], [
379 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
380 ], [AC_INCLUDES_DEFAULT])
382 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
383 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
384 ], [], [[#include <rte_config.h>]])
386 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
387 OVS_FIND_DEPENDENCY([pcap_dump_close], [pcap], [libpcap])
388 ], [], [[#include <rte_config.h>]])
390 AC_CHECK_DECL([RTE_LIBRTE_PMD_AF_XDP], [
392 ], [], [[#include <rte_config.h>]])
394 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
395 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
396 ], [], [[#include <rte_config.h>]])
398 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
399 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
400 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
401 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
402 ], [[#include <rte_config.h>]])
403 ], [], [[#include <rte_config.h>]])
405 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
406 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
407 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
408 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
409 ], [[#include <rte_config.h>]])
410 ], [], [[#include <rte_config.h>]])
412 # DPDK uses dlopen to load plugins.
413 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
415 AC_MSG_CHECKING([whether linking with dpdk works])
416 LIBS="$DPDK_LIB $LIBS"
418 [AC_LANG_PROGRAM([#include <rte_config.h>
419 #include <rte_eal.h>],
420 [int rte_argc; char ** rte_argv;
421 rte_eal_init(rte_argc, rte_argv);])],
422 [AC_MSG_RESULT([yes])
425 if test "$DPDK_AUTO_DISCOVER" = "true"; then
426 AC_MSG_ERROR(m4_normalize([
427 Could not find DPDK library in default search path, Use --with-dpdk
428 to specify the DPDK library installed in non-standard location]))
430 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
434 CFLAGS="$ovs_save_CFLAGS"
435 LDFLAGS="$ovs_save_LDFLAGS"
436 if test "$DPDK_AUTO_DISCOVER" = "false"; then
437 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
439 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
440 OVS_ENABLE_OPTION([-mssse3])
442 # DPDK pmd drivers are not linked unless --whole-archive is used.
444 # This happens because the rest of the DPDK code doesn't use any symbol in
445 # the pmd driver objects, and the drivers register themselves using an
446 # __attribute__((constructor)) function.
448 # These options are specified inside a single -Wl directive to prevent
449 # autotools from reordering them.
451 # OTOH newer versions of dpdk pkg-config (generated with Meson)
452 # will already have flagged just the right set of libs with
453 # --whole-archive - in those cases do not wrap it once more.
455 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
456 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
458 AC_SUBST([DPDK_vswitchd_LDFLAGS])
459 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
462 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
465 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
467 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
468 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
469 dnl <REGEX> translated to uppercase.
470 AC_DEFUN([OVS_GREP_IFELSE], [
471 AC_MSG_CHECKING([whether $2 matches in $1])
473 grep '$2' $1 >/dev/null 2>&1
478 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
485 AC_MSG_ERROR([grep exited with status $status])
489 AC_MSG_RESULT([file not found])
494 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
496 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
497 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
498 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
499 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
500 dnl translated to uppercase.
501 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
502 AC_MSG_CHECKING([whether $2 has member $3 in $1])
504 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
509 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
516 AC_MSG_ERROR([grep exited with status $status])
520 AC_MSG_RESULT([file not found])
525 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
527 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
528 dnl the function signature starting from the line matching FUNCTION
529 dnl and ending with the line containing the closing parenthesis. If
530 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
531 dnl IF-MATCH is empty then it defines to
532 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
533 dnl <REGEX> translated to uppercase.
534 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
535 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
537 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
542 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
549 AC_MSG_ERROR([grep exited with status $status])
553 AC_MSG_RESULT([file not found])
558 dnl OVS_FIND_OP_PARAM_IFELSE(FILE, OP, REGEX, [IF-MATCH], [IF-NO-MATCH])
560 dnl Looks for OP in FILE. If it is found, greps for REGEX within the
561 dnl OP definition. If this is successful, runs IF-MATCH, otherwise
562 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
563 dnl OVS_DEFINE(HAVE_<OP>_WITH_<REGEX>), with <OP> and <REGEX>
564 dnl translated to uppercase.
565 AC_DEFUN([OVS_FIND_OP_PARAM_IFELSE], [
566 AC_MSG_CHECKING([whether $2 has member $3 in $1])
568 awk '/$2[[ \t\n]]*\)\(/,/;/' $1 2>/dev/null | grep '$3' >/dev/null
573 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
580 AC_MSG_ERROR([grep exited with status $status])
584 AC_MSG_RESULT([file not found])
591 dnl Defines NAME to 1 in kcompat.h.
592 AC_DEFUN([OVS_DEFINE], [
593 echo '#define $1 1' >> datapath/linux/kcompat.h.new
596 dnl OVS_CHECK_LINUX_COMPAT
598 dnl Runs various Autoconf checks on the Linux kernel source in
599 dnl the directory in $KBUILD.
600 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
601 rm -f datapath/linux/kcompat.h.new
602 mkdir -p datapath/linux
603 : > datapath/linux/kcompat.h.new
605 echo '#include <linux/version.h>
606 #ifndef RHEL_RELEASE_CODE
607 #define RHEL_RELEASE_CODE 0
608 #define RHEL_RELEASE_VERSION(a, b) 0
609 #endif' >> datapath/linux/kcompat.h.new
611 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
612 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
614 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
615 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
617 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub],
619 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
620 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
621 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow.*net],
622 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_FLOW_NET])])
623 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
624 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow])
626 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
627 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
628 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
630 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
631 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
632 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
633 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
634 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h],
635 [DECLARE_STATIC_KEY_FALSE],
636 [OVS_DEFINE([HAVE_DECLARE_STATIC_KEY])])
638 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
639 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
641 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
642 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
643 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
644 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
645 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
646 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
648 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
649 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
650 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
651 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
652 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
653 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
655 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
656 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
657 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
658 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
659 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
660 [ip_do_fragment], [net],
661 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
662 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
663 [ip_local_out], [net],
664 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
666 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
668 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
669 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
670 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
671 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
672 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
673 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
674 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
675 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
676 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
677 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
679 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
681 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
683 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
684 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
685 [sub_frag_mem_limit], [struct.netns_frags],
686 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
687 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
688 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
689 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
690 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
692 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
693 dnl OVS does not really need ipv6 label field, but its presence signifies that
694 dnl the stack has all required ipv6 support.
695 dnl OVS also does not need dst_cache But this dependency allows us to write
696 dnl much cleaner code.
698 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
700 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
701 [iptunnel_pull_offloads],
702 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
703 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
704 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
706 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
707 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
708 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
709 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
710 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
711 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
712 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
713 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
714 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
715 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
716 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
717 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
718 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
719 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
720 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
721 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
722 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
723 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
724 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
725 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
726 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
727 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
728 dnl So check type of tstats.
729 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
730 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
731 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
732 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
733 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
734 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
735 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
736 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
737 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
738 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
739 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
741 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
742 [netdev_master_upper_dev_link], [upper_priv],
743 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
744 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
745 [netdev_master_upper_dev_link_rh],
746 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
748 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
750 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
751 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
752 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
753 [dev_change_flags], [extack],
754 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
756 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
757 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
758 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
759 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
760 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
761 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
762 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
763 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
764 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
765 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
766 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
767 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
770 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
771 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
773 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
774 [nf_conn], [struct timer_list[[ \t]]*timeout],
775 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
776 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
777 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
779 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
780 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
781 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
782 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
783 [nf_ct_get_tuplepr], [struct.net],
784 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
785 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
787 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
788 [nf_ct_is_untracked])
789 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
790 [nf_ct_invert_tuplepr])
791 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
793 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
795 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
797 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
798 [nf_connlabels_get], [int bit],
799 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
800 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
801 [nf_conn_labels], [words])
802 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
803 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
804 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
805 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
806 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
807 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
808 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
809 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
810 [int nf_conncount_add],
811 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
812 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
813 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
814 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
815 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
816 [\(*nf_ct_timeout_find_get_hook\)], [net],
817 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
819 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
821 [OVS_DEFINE([HAVE_PRANDOM_U32])])
822 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
823 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h],
825 [OVS_DEFINE([HAVE_PRANDOM_U32])])
826 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h], [prandom_u32_max])
828 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
829 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
830 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
831 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
832 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
834 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
835 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
836 [rcu_read_lock_held])])
837 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
838 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
839 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
840 [rtnl_create_link], [extack],
841 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
842 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
844 # Check for the proto_data_valid member in struct sk_buff. The [^@]
845 # is necessary because some versions of this header remove the
846 # member but retain the kerneldoc comment that describes it (which
847 # starts with @). The brackets must be doubled because of m4
849 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
850 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
851 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
853 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
854 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
855 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
856 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
857 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
858 [OVS_DEFINE([HAVE_U16_RXHASH])])
859 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
860 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
861 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
862 [skb_copy_from_linear_data_offset])
863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
864 [skb_reset_tail_pointer])
865 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
866 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
867 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
868 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
869 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
870 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
871 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
872 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
873 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
874 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
876 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
877 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
878 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
879 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
880 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
881 [OVS_DEFINE([HAVE_L4_RXHASH])])
882 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
884 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
885 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
886 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
887 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
888 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
889 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
890 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
892 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
893 [OVS_DEFINE([HAVE_CSUM_TYPES])])
894 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
895 [OVS_DEFINE([HAVE_CSUM_TYPES])])
897 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
898 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
900 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
901 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
903 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
904 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
905 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
906 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
907 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
908 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
909 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
910 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
911 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
912 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
913 [genl_notify], [net],
914 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
917 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
918 [genl_multicast_group], [id])
919 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
921 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
922 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
923 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
924 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
925 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
926 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
927 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
928 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
929 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
931 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
932 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
933 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
934 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
935 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
936 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
937 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
938 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
939 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
940 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
941 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
942 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
943 [nla_parse], [netlink_ext_ack],
944 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
946 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
948 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
949 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
950 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
951 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
952 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
954 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
955 [metadata_dst_alloc], [metadata_type])
957 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
959 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
960 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
961 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
962 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
963 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
964 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
965 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
966 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
967 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
968 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
971 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
972 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
973 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
974 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
976 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
977 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
978 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
979 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
980 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
981 [udp_add_offload], [net],
982 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
983 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
984 [nf_defrag_ipv6_enable], [net],
985 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
986 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
987 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
988 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
990 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
991 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
992 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
993 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
994 [nf_conntrack_helper_put],
995 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
996 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
997 [nf_nat_helper_try_module_get])
998 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1000 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
1001 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
1002 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
1003 [OVS_DEFINE([HAVE_DST_NOCACHE])])
1004 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
1006 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
1007 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
1009 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
1010 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
1012 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
1013 [netdev_master_upper_dev_link], [extack],
1014 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
1015 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
1016 [__LINUX_COMPILER_TYPES_H],
1017 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
1018 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1020 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
1021 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
1022 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
1023 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1024 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1026 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
1027 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
1028 frag_percpu_counter_batch[],
1029 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
1030 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1031 [null_compute_pseudo],
1032 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
1033 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1034 [__skb_checksum_convert],
1035 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
1036 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
1038 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
1039 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
1041 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
1042 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1044 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
1045 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
1046 [ip6_make_flowlabel], [fl6],
1047 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1048 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1050 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1051 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1053 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1054 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1056 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1057 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1058 [skb_set_inner_ipproto],
1059 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1060 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1061 [tunnel_encap_types],
1062 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1063 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1064 [IFLA_IPTUN_ENCAP_TYPE],
1065 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1066 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1067 [IFLA_IPTUN_COLLECT_METADATA],
1068 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
1069 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1070 [IFLA_GRE_ENCAP_DPORT])
1071 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1072 [IFLA_GRE_COLLECT_METADATA])
1073 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1074 [IFLA_GRE_IGNORE_DF])
1075 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1077 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1078 [IFLA_GRE_ERSPAN_INDEX])
1079 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1080 [IFLA_GRE_ERSPAN_HWID])
1081 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1082 [IFLA_IPTUN_FWMARK])
1083 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1085 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
1086 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1088 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
1089 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1090 [skb_checksum_simple_validate])
1091 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1092 [void.*ndo_get_stats64],
1093 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
1094 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1095 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
1096 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1097 [ip_tunnel_info_opts_set], [flags],
1098 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
1099 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1101 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
1102 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1103 [OVS_DEFINE([HAVE_OVERFLOW_H])])
1104 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1105 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
1106 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1107 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1108 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1109 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
1110 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1111 [nf_conntrack_l3proto],
1112 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
1113 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1114 [nf_conntrack_in], [nf_hook_state],
1115 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
1116 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1117 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1118 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1119 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1120 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1121 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1122 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1123 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1124 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1125 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1126 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
1127 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1128 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
1129 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1130 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
1131 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1133 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
1134 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1135 [nla_parse_deprecated_strict],
1136 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
1137 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1138 [validate], [extack],
1139 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
1140 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1142 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [sw_hash])
1143 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash_raw])
1145 if cmp -s datapath/linux/kcompat.h.new \
1146 datapath/linux/kcompat.h >/dev/null 2>&1; then
1147 rm datapath/linux/kcompat.h.new
1149 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1153 dnl Checks for net/if_dl.h.
1155 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1157 AC_DEFUN([OVS_CHECK_IF_DL],
1158 [AC_CHECK_HEADER([net/if_dl.h],
1161 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1162 if test "$HAVE_IF_DL" = yes; then
1163 AC_DEFINE([HAVE_IF_DL], [1],
1164 [Define to 1 if net/if_dl.h is available.])
1166 # On these platforms we use libpcap to access network devices.
1167 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1170 dnl Checks for buggy strtok_r.
1172 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1173 dnl with optimization that can cause segfaults:
1175 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1176 AC_DEFUN([OVS_CHECK_STRTOK_R],
1178 [whether strtok_r macro segfaults on some inputs],
1179 [ovs_cv_strtok_r_bug],
1181 [AC_LANG_PROGRAM([#include <stdio.h>
1184 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1185 /* Assume bug is present, because relatively minor
1186 changes in compiler settings (e.g. optimization
1187 level) can make it crop up. */
1190 char string[] = ":::";
1191 char *save_ptr = (char *) 0xc0ffee;
1192 char *token1, *token2;
1193 token1 = strtok_r(string, ":", &save_ptr);
1194 token2 = strtok_r(NULL, ":", &save_ptr);
1195 freopen ("/dev/null", "w", stdout);
1196 printf ("%s %s\n", token1, token2);
1200 [ovs_cv_strtok_r_bug=no],
1201 [ovs_cv_strtok_r_bug=yes],
1202 [ovs_cv_strtok_r_bug=yes])])
1203 if test $ovs_cv_strtok_r_bug = yes; then
1204 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1205 [Define if strtok_r macro segfaults on some inputs])
1209 dnl ----------------------------------------------------------------------
1210 dnl These macros are from GNU PSPP, with the following original license:
1211 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1212 dnl This file is free software; the Free Software Foundation
1213 dnl gives unlimited permission to copy and/or distribute it,
1214 dnl with or without modifications, as long as this notice is preserved.
1216 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1217 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1218 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1219 [ovs_save_CFLAGS="$CFLAGS"
1220 dnl Include -Werror in the compiler options, because without -Werror
1221 dnl clang's GCC-compatible compiler driver does not return a failure
1222 dnl exit status even though it complains about options it does not
1225 dnl Also, check stderr as gcc exits with status 0 for options
1226 dnl rejected at getopt level.
1227 dnl % touch /tmp/a.c
1228 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1229 dnl gcc: unrecognized option '-Qunused-arguments'
1233 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1234 dnl it does not understand, unless it has another error to report, so
1235 dnl instead of testing for -Wno-<foo>, test for the positive version.
1236 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1238 [AC_LANG_SOURCE([int x;])],
1239 [if test -s conftest.err && grep "unrecognized option" conftest.err
1246 CFLAGS="$ovs_save_CFLAGS"])
1247 if test $ovs_cv_name = yes; then
1248 m4_if([$2], [], [:], [$2])
1250 m4_if([$3], [], [:], [$3])
1254 dnl OVS_CHECK_WERROR
1256 dnl Check whether the C compiler accepts -Werror.
1257 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1258 AC_DEFUN([OVS_CHECK_WERROR],
1260 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1262 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1263 dnl Check whether the given C compiler OPTION is accepted.
1264 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1265 AC_DEFUN([OVS_CHECK_CC_OPTION],
1266 [AC_REQUIRE([OVS_CHECK_WERROR])
1267 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1269 dnl OVS_ENABLE_OPTION([OPTION])
1270 dnl Check whether the given C compiler OPTION is accepted.
1271 dnl If so, add it to WARNING_FLAGS.
1272 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1273 AC_DEFUN([OVS_ENABLE_OPTION],
1274 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1275 AC_SUBST([WARNING_FLAGS])])
1277 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1278 dnl Check whether the given C compiler OPTION is accepted.
1279 dnl If so, enable the given Automake CONDITIONAL.
1281 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1282 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1283 [OVS_CHECK_CC_OPTION(
1284 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1285 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1286 dnl ----------------------------------------------------------------------
1288 dnl Check for too-old XenServer.
1289 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1290 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1291 [if test -e /etc/redhat-release; then
1292 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1294 if test -z "$ovs_cv_xsversion"; then
1295 ovs_cv_xsversion=none
1297 case $ovs_cv_xsversion in
1301 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1302 [[6-9]]* | dnl XenServer 6 or later
1303 5.[[7-9]]* | dnl XenServer 5.7 or later
1304 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1305 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1306 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1310 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1314 dnl OVS_CHECK_SPARSE_TARGET
1316 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1317 dnl target for which the code is being built. This helps it out.
1318 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1320 [target hint for cgcc],
1321 [ac_cv_sparse_target],
1322 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1323 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1324 [x86_64-*], [ac_cv_sparse_target=x86_64],
1325 [ac_cv_sparse_target=other])])
1326 AS_CASE([$ac_cv_sparse_target],
1327 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1328 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1329 [SPARSEFLAGS= CGCCFLAGS=])
1331 dnl Get the default defines for vector instructions from compiler to
1332 dnl allow "sparse" correctly check the same code that will be built.
1333 dnl Required for checking DPDK headers.
1334 AC_MSG_CHECKING([vector options for cgcc])
1335 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1336 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1337 AC_MSG_RESULT([$VECTOR])
1338 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1340 AC_SUBST([SPARSEFLAGS])
1341 AC_SUBST([CGCCFLAGS])])
1343 dnl OVS_SPARSE_EXTRA_INCLUDES
1345 dnl The cgcc script from "sparse" does not search gcc's default
1346 dnl search path. Get the default search path from GCC and pass
1348 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1349 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1350 [`$CC -v -E - </dev/null 2>&1 >/dev/null | sed -n -e '/^#include.*search.*starts.*here:/,/^End.*of.*search.*list\./s/^ \(.*\)/-I \1/p' |grep -v /usr/lib | grep -x -v '\-I /usr/include' | tr \\\n ' ' `] ))
1352 dnl OVS_ENABLE_SPARSE
1353 AC_DEFUN([OVS_ENABLE_SPARSE],
1354 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1355 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1358 AC_CONFIG_COMMANDS_PRE(
1359 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1363 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1364 [], [enable_sparse=no])
1365 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1367 dnl OVS_CTAGS_IDENTIFIERS
1369 dnl ctags ignores symbols with extras identifiers. This is a list of
1370 dnl specially handled identifiers to be ignored. [ctags(1) -I <list>].
1371 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1372 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1373 ["OVS_LOCKABLE OVS_NO_THREAD_SAFETY_ANALYSIS OVS_REQ_RDLOCK+ OVS_ACQ_RDLOCK+ OVS_REQ_WRLOCK+ OVS_ACQ_WRLOCK+ OVS_REQUIRES+ OVS_ACQUIRES+ OVS_TRY_WRLOCK+ OVS_TRY_RDLOCK+ OVS_TRY_LOCK+ OVS_GUARDED_BY+ OVS_EXCLUDED+ OVS_RELEASES+ OVS_ACQ_BEFORE+ OVS_ACQ_AFTER+"]))
1375 dnl OVS_PTHREAD_SET_NAME
1377 dnl This checks for three known variants of pthreads functions for setting
1378 dnl the name of the current thread:
1380 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1381 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1382 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1384 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1385 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1388 dnl This macro defines:
1390 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1391 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1392 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1393 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1394 [AC_CHECK_FUNCS([pthread_set_name_np])
1395 if test $ac_cv_func_pthread_set_name_np != yes; then
1397 [for pthread_setname_np() variant],
1398 [ovs_cv_pthread_setname_np],
1400 [AC_LANG_PROGRAM([#include <pthread.h>
1401 ], [pthread_setname_np(pthread_self(), "name");])],
1402 [ovs_cv_pthread_setname_np=glibc],
1404 [AC_LANG_PROGRAM([#include <pthread.h>
1405 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1406 [ovs_cv_pthread_setname_np=netbsd],
1407 [ovs_cv_pthread_setname_np=none])])])
1408 case $ovs_cv_pthread_setname_np in # (
1411 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1412 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1416 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1417 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1422 dnl OVS_CHECK_LINUX_HOST.
1424 dnl Checks whether we're building for a Linux host, based on the presence of
1425 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1426 dnl LINUX based on the result.
1427 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1429 [whether __linux__ is defined],
1432 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1433 [ovs_cv_linux=true],
1434 [ovs_cv_linux=false])])
1435 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])