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 5; then
173 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.5.x is not supported (please refer to the FAQ for advice)])
175 elif test "$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([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
633 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
635 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
636 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
638 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
639 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
640 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
641 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
642 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
643 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
645 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
646 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
647 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
648 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
649 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
650 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
652 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
653 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
654 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
655 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
656 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
657 [ip_do_fragment], [net],
658 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
659 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
660 [ip_local_out], [net],
661 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
663 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
665 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
666 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
667 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
668 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
669 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
670 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
671 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
672 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
673 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
674 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
676 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
678 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
680 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
681 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
682 [sub_frag_mem_limit], [struct.netns_frags],
683 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
684 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
685 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
686 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
687 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
689 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
690 dnl OVS does not really need ipv6 label field, but its presence signifies that
691 dnl the stack has all required ipv6 support.
692 dnl OVS also does not need dst_cache But this dependency allows us to write
693 dnl much cleaner code.
695 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
697 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
698 [iptunnel_pull_offloads],
699 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
700 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
701 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
703 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
704 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
705 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
706 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
707 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
708 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
709 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
710 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
711 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
712 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
713 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
714 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
715 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
716 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
717 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
718 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
719 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
720 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
721 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
722 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
723 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
724 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
725 dnl So check type of tstats.
726 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
727 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
728 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
729 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
730 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
731 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
732 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
733 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
734 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
735 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
736 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
738 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
739 [netdev_master_upper_dev_link], [upper_priv],
740 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
741 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
742 [netdev_master_upper_dev_link_rh],
743 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
745 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
747 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
748 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
749 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
750 [dev_change_flags], [extack],
751 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
753 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
754 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
755 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
756 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
757 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
758 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
759 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
760 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
761 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
762 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
763 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
764 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
767 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
768 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
770 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
771 [nf_conn], [struct timer_list[[ \t]]*timeout],
772 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
773 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
774 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
776 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
777 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
778 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
779 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
780 [nf_ct_get_tuplepr], [struct.net],
781 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
782 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
784 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
785 [nf_ct_is_untracked])
786 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
787 [nf_ct_invert_tuplepr])
788 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
790 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
792 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
794 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
795 [nf_connlabels_get], [int bit],
796 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
797 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
798 [nf_conn_labels], [words])
799 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
800 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
801 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
802 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
803 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
804 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
805 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
806 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
807 [int nf_conncount_add],
808 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
809 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
810 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
811 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
812 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
813 [\(*nf_ct_timeout_find_get_hook\)], [net],
814 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
816 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
818 [OVS_DEFINE([HAVE_PRANDOM_U32])])
819 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
821 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
822 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
823 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
824 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
825 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
827 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
828 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
829 [rcu_read_lock_held])])
830 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
831 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
832 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
833 [rtnl_create_link], [extack],
834 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
835 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
837 # Check for the proto_data_valid member in struct sk_buff. The [^@]
838 # is necessary because some versions of this header remove the
839 # member but retain the kerneldoc comment that describes it (which
840 # starts with @). The brackets must be doubled because of m4
842 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
843 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
844 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
845 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
846 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
847 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
848 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
849 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
850 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
851 [OVS_DEFINE([HAVE_U16_RXHASH])])
852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
853 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
854 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
855 [skb_copy_from_linear_data_offset])
856 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
857 [skb_reset_tail_pointer])
858 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
859 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
860 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
861 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
862 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
864 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
865 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
866 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
867 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
868 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
869 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
870 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
871 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
872 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
873 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
874 [OVS_DEFINE([HAVE_L4_RXHASH])])
875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
876 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
877 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
878 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
879 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
880 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
881 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
882 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
885 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
886 [OVS_DEFINE([HAVE_CSUM_TYPES])])
887 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
888 [OVS_DEFINE([HAVE_CSUM_TYPES])])
890 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
891 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
893 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
894 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
896 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
897 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
898 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
899 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
900 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
901 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
902 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
903 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
904 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
905 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
906 [genl_notify], [net],
907 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
910 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
911 [genl_multicast_group], [id])
912 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
914 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
915 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
916 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
917 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
918 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
919 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
920 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
921 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
922 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
924 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
925 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
926 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
927 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
928 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
929 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
930 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
931 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
932 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
933 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
934 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
935 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
936 [nla_parse], [netlink_ext_ack],
937 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
939 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
941 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
942 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
943 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
944 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
945 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
947 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
948 [metadata_dst_alloc], [metadata_type])
950 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
952 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
953 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
954 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
955 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
956 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
957 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
958 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
959 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
960 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
961 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
964 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
965 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
966 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
967 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
969 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
970 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
971 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
972 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
973 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
974 [udp_add_offload], [net],
975 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
976 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
977 [nf_defrag_ipv6_enable], [net],
978 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
979 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
980 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
981 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
983 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
984 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
985 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
986 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
987 [nf_conntrack_helper_put],
988 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
989 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
990 [nf_nat_helper_try_module_get])
991 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
993 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
994 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
995 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
996 [OVS_DEFINE([HAVE_DST_NOCACHE])])
997 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
999 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
1000 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
1002 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
1003 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
1005 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
1006 [netdev_master_upper_dev_link], [extack],
1007 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
1008 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
1009 [__LINUX_COMPILER_TYPES_H],
1010 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
1011 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1013 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
1014 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
1015 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
1016 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1017 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1019 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
1020 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
1021 frag_percpu_counter_batch[],
1022 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
1023 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1024 [null_compute_pseudo],
1025 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
1026 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1027 [__skb_checksum_convert],
1028 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
1029 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
1031 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
1032 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
1034 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
1035 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1037 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
1038 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
1039 [ip6_make_flowlabel], [fl6],
1040 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1041 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1043 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1044 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1046 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1047 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1049 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1050 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1051 [skb_set_inner_ipproto],
1052 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1053 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1054 [tunnel_encap_types],
1055 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1056 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1057 [IFLA_IPTUN_ENCAP_TYPE],
1058 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1059 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1060 [IFLA_IPTUN_COLLECT_METADATA],
1061 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
1062 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1063 [IFLA_GRE_ENCAP_DPORT])
1064 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1065 [IFLA_GRE_COLLECT_METADATA])
1066 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1067 [IFLA_GRE_IGNORE_DF])
1068 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1070 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1071 [IFLA_GRE_ERSPAN_INDEX])
1072 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1073 [IFLA_GRE_ERSPAN_HWID])
1074 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1075 [IFLA_IPTUN_FWMARK])
1076 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1078 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
1079 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1081 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
1082 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1083 [skb_checksum_simple_validate])
1084 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1085 [void.*ndo_get_stats64],
1086 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
1087 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1088 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
1089 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1090 [ip_tunnel_info_opts_set], [flags],
1091 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
1092 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1094 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
1095 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1096 [OVS_DEFINE([HAVE_OVERFLOW_H])])
1097 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1098 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
1099 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1100 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1101 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1102 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
1103 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1104 [nf_conntrack_l3proto],
1105 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
1106 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1107 [nf_conntrack_in], [nf_hook_state],
1108 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
1109 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1110 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1111 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1112 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1113 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1114 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1115 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1116 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1117 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1118 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1119 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
1120 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1121 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
1122 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1123 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
1124 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1126 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
1127 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1128 [nla_parse_deprecated_strict],
1129 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
1130 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1131 [validate], [extack],
1132 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
1133 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1135 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [sw_hash])
1136 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash_raw])
1138 if cmp -s datapath/linux/kcompat.h.new \
1139 datapath/linux/kcompat.h >/dev/null 2>&1; then
1140 rm datapath/linux/kcompat.h.new
1142 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1146 dnl Checks for net/if_dl.h.
1148 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1150 AC_DEFUN([OVS_CHECK_IF_DL],
1151 [AC_CHECK_HEADER([net/if_dl.h],
1154 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1155 if test "$HAVE_IF_DL" = yes; then
1156 AC_DEFINE([HAVE_IF_DL], [1],
1157 [Define to 1 if net/if_dl.h is available.])
1159 # On these platforms we use libpcap to access network devices.
1160 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1163 dnl Checks for buggy strtok_r.
1165 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1166 dnl with optimization that can cause segfaults:
1168 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1169 AC_DEFUN([OVS_CHECK_STRTOK_R],
1171 [whether strtok_r macro segfaults on some inputs],
1172 [ovs_cv_strtok_r_bug],
1174 [AC_LANG_PROGRAM([#include <stdio.h>
1177 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1178 /* Assume bug is present, because relatively minor
1179 changes in compiler settings (e.g. optimization
1180 level) can make it crop up. */
1183 char string[] = ":::";
1184 char *save_ptr = (char *) 0xc0ffee;
1185 char *token1, *token2;
1186 token1 = strtok_r(string, ":", &save_ptr);
1187 token2 = strtok_r(NULL, ":", &save_ptr);
1188 freopen ("/dev/null", "w", stdout);
1189 printf ("%s %s\n", token1, token2);
1193 [ovs_cv_strtok_r_bug=no],
1194 [ovs_cv_strtok_r_bug=yes],
1195 [ovs_cv_strtok_r_bug=yes])])
1196 if test $ovs_cv_strtok_r_bug = yes; then
1197 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1198 [Define if strtok_r macro segfaults on some inputs])
1202 dnl ----------------------------------------------------------------------
1203 dnl These macros are from GNU PSPP, with the following original license:
1204 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1205 dnl This file is free software; the Free Software Foundation
1206 dnl gives unlimited permission to copy and/or distribute it,
1207 dnl with or without modifications, as long as this notice is preserved.
1209 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1210 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1211 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1212 [ovs_save_CFLAGS="$CFLAGS"
1213 dnl Include -Werror in the compiler options, because without -Werror
1214 dnl clang's GCC-compatible compiler driver does not return a failure
1215 dnl exit status even though it complains about options it does not
1218 dnl Also, check stderr as gcc exits with status 0 for options
1219 dnl rejected at getopt level.
1220 dnl % touch /tmp/a.c
1221 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1222 dnl gcc: unrecognized option '-Qunused-arguments'
1226 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1227 dnl it does not understand, unless it has another error to report, so
1228 dnl instead of testing for -Wno-<foo>, test for the positive version.
1229 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1231 [AC_LANG_SOURCE([int x;])],
1232 [if test -s conftest.err && grep "unrecognized option" conftest.err
1239 CFLAGS="$ovs_save_CFLAGS"])
1240 if test $ovs_cv_name = yes; then
1241 m4_if([$2], [], [:], [$2])
1243 m4_if([$3], [], [:], [$3])
1247 dnl OVS_CHECK_WERROR
1249 dnl Check whether the C compiler accepts -Werror.
1250 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1251 AC_DEFUN([OVS_CHECK_WERROR],
1253 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1255 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1256 dnl Check whether the given C compiler OPTION is accepted.
1257 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1258 AC_DEFUN([OVS_CHECK_CC_OPTION],
1259 [AC_REQUIRE([OVS_CHECK_WERROR])
1260 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1262 dnl OVS_ENABLE_OPTION([OPTION])
1263 dnl Check whether the given C compiler OPTION is accepted.
1264 dnl If so, add it to WARNING_FLAGS.
1265 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1266 AC_DEFUN([OVS_ENABLE_OPTION],
1267 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1268 AC_SUBST([WARNING_FLAGS])])
1270 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1271 dnl Check whether the given C compiler OPTION is accepted.
1272 dnl If so, enable the given Automake CONDITIONAL.
1274 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1275 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1276 [OVS_CHECK_CC_OPTION(
1277 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1278 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1279 dnl ----------------------------------------------------------------------
1281 dnl Check for too-old XenServer.
1282 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1283 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1284 [if test -e /etc/redhat-release; then
1285 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1287 if test -z "$ovs_cv_xsversion"; then
1288 ovs_cv_xsversion=none
1290 case $ovs_cv_xsversion in
1294 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1295 [[6-9]]* | dnl XenServer 6 or later
1296 5.[[7-9]]* | dnl XenServer 5.7 or later
1297 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1298 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1299 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1303 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1307 dnl OVS_CHECK_SPARSE_TARGET
1309 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1310 dnl target for which the code is being built. This helps it out.
1311 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1313 [target hint for cgcc],
1314 [ac_cv_sparse_target],
1315 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1316 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1317 [x86_64-*], [ac_cv_sparse_target=x86_64],
1318 [ac_cv_sparse_target=other])])
1319 AS_CASE([$ac_cv_sparse_target],
1320 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1321 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1322 [SPARSEFLAGS= CGCCFLAGS=])
1324 dnl Get the default defines for vector instructions from compiler to
1325 dnl allow "sparse" correctly check the same code that will be built.
1326 dnl Required for checking DPDK headers.
1327 AC_MSG_CHECKING([vector options for cgcc])
1328 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1329 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1330 AC_MSG_RESULT([$VECTOR])
1331 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1333 AC_SUBST([SPARSEFLAGS])
1334 AC_SUBST([CGCCFLAGS])])
1336 dnl OVS_SPARSE_EXTRA_INCLUDES
1338 dnl The cgcc script from "sparse" does not search gcc's default
1339 dnl search path. Get the default search path from GCC and pass
1341 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1342 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1343 [`$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 ' ' `] ))
1345 dnl OVS_ENABLE_SPARSE
1346 AC_DEFUN([OVS_ENABLE_SPARSE],
1347 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1348 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1351 AC_CONFIG_COMMANDS_PRE(
1352 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1356 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1357 [], [enable_sparse=no])
1358 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1360 dnl OVS_CTAGS_IDENTIFIERS
1362 dnl ctags ignores symbols with extras identifiers. This is a list of
1363 dnl specially handled identifiers to be ignored. [ctags(1) -I <list>].
1364 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1365 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1366 ["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+"]))
1368 dnl OVS_PTHREAD_SET_NAME
1370 dnl This checks for three known variants of pthreads functions for setting
1371 dnl the name of the current thread:
1373 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1374 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1375 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1377 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1378 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1381 dnl This macro defines:
1383 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1384 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1385 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1386 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1387 [AC_CHECK_FUNCS([pthread_set_name_np])
1388 if test $ac_cv_func_pthread_set_name_np != yes; then
1390 [for pthread_setname_np() variant],
1391 [ovs_cv_pthread_setname_np],
1393 [AC_LANG_PROGRAM([#include <pthread.h>
1394 ], [pthread_setname_np(pthread_self(), "name");])],
1395 [ovs_cv_pthread_setname_np=glibc],
1397 [AC_LANG_PROGRAM([#include <pthread.h>
1398 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1399 [ovs_cv_pthread_setname_np=netbsd],
1400 [ovs_cv_pthread_setname_np=none])])])
1401 case $ovs_cv_pthread_setname_np in # (
1404 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1405 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1409 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1410 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1415 dnl OVS_CHECK_LINUX_HOST.
1417 dnl Checks whether we're building for a Linux host, based on the presence of
1418 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1419 dnl LINUX based on the result.
1420 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1422 [whether __linux__ is defined],
1425 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1426 [ovs_cv_linux=true],
1427 [ovs_cv_linux=false])])
1428 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])