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.
18 AC_DEFUN([OVS_ENABLE_WERROR],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
35 AC_SUBST([FLAKE8_WERROR])
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
43 AC_SUBST([SPARSE_WERROR])])
47 dnl Configure linux kernel source tree
48 AC_DEFUN([OVS_CHECK_LINUX], [
50 [AC_HELP_STRING([--with-linux=/path/to/linux],
51 [Specify the Linux kernel build directory])])
52 AC_ARG_WITH([linux-source],
53 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
54 [Specify the Linux kernel source directory
55 (usually figured out automatically from build
58 # Deprecated equivalents to --with-linux, --with-linux-source.
60 AC_ARG_WITH([l26-source])
62 if test X"$with_linux" != X; then
64 elif test X"$with_l26" != X; then
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
71 if test X"$KBUILD" != X; then
72 if test X"$with_linux_source" != X; then
73 KSRC=$with_linux_source
74 elif test X"$with_l26_source" != X; then
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
88 *) KBUILD=`pwd`/$KBUILD ;;
91 # The build directory is what the user provided.
92 # Make sure that it exists.
93 AC_MSG_CHECKING([for Linux build directory])
94 if test -d "$KBUILD"; then
95 AC_MSG_RESULT([$KBUILD])
99 AC_ERROR([source dir $KBUILD doesn't exist])
102 # Debian breaks kernel headers into "source" header and "build" headers.
103 # We want the source headers, but $KBUILD gives us the "build" headers.
104 # Use heuristics to find the source headers.
105 AC_MSG_CHECKING([for Linux source directory])
106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
110 *) KSRC=`pwd`/$KSRC ;;
112 if test ! -e $KSRC/include/linux/kernel.h; then
113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
117 if test ! -e $KSRC/include/linux/kernel.h; then
118 # Debian kernel build Makefiles tend to include a line of the form:
119 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
120 # First try to extract the source directory from this line.
121 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
122 if test ! -e "$KSRC"/include/linux/kernel.h; then
123 # Didn't work. Fall back to name-based heuristics that used to work.
124 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
134 if test ! -e "$KSRC"/include/linux/kernel.h; then
135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
138 AC_MSG_RESULT([$KSRC])
140 AC_MSG_CHECKING([for kernel version])
141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
144 if test X"$version" = X || test X"$patchlevel" = X; then
145 AC_ERROR([cannot determine kernel version])
146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
149 kversion=$version.$patchlevel.$sublevel
151 AC_MSG_RESULT([$kversion])
153 if test "$version" -ge 5; then
154 if test "$version" = 5 && test "$patchlevel" -le 0; then
157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.0.x is not supported (please refer to the FAQ for advice)])
159 elif test "$version" = 4; then
161 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
164 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
166 if (test ! -e "$KBUILD"/include/linux/version.h && \
167 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
168 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
169 test ! -e "$KBUILD"/include/generated/autoconf.h); then
170 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
172 OVS_CHECK_LINUX_COMPAT
174 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
177 dnl OVS_CHECK_LINUX_NETLINK
179 dnl Configure Linux netlink compat.
180 AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [
182 AC_LANG_PROGRAM([#include <linux/netlink.h>], [
183 struct nla_bitfield32 x = { 0 };
185 [AC_DEFINE([HAVE_NLA_BITFIELD32], [1],
186 [Define to 1 if struct nla_bitfield32 is available.])])
189 dnl OVS_CHECK_LINUX_TC
191 dnl Configure Linux tc compat.
192 AC_DEFUN([OVS_CHECK_LINUX_TC], [
194 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
195 int x = TCA_ACT_FLAGS;
197 [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1],
198 [Define to 1 if TCA_ACT_FLAGS is available.])])
200 AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>])
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
204 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
206 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
207 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
211 int x = TCA_MPLS_TTL;
213 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
214 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
217 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
218 int x = TCA_TUNNEL_KEY_ENC_TTL;
220 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
221 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
224 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
225 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
227 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
228 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
231 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
232 int x = TCA_SKBEDIT_FLAGS;
234 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
235 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
238 dnl OVS_CHECK_LINUX_SCTP_CT
240 dnl Checks for kernels which need additional SCTP state
241 AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
243 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
244 #include <linux/netfilter/nfnetlink_conntrack.h>
245 #include <linux/netfilter/nf_conntrack_common.h>
246 #include <linux/netfilter/nf_conntrack_sctp.h>], [
247 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
249 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
250 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
253 dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
255 dnl Check for a function in a library list.
256 AC_DEFUN([OVS_FIND_DEPENDENCY], [
257 AC_SEARCH_LIBS([$1], [$2], [], [
258 AC_MSG_ERROR([unable to find $3, install the dependency package])
262 dnl OVS_CHECK_LINUX_AF_XDP
264 dnl Check both Linux kernel AF_XDP and libbpf support
265 AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
266 AC_ARG_ENABLE([afxdp],
267 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
268 [], [enable_afxdp=no])
269 AC_MSG_CHECKING([whether AF_XDP is enabled])
270 if test "$enable_afxdp" != yes; then
277 AC_CHECK_HEADER([bpf/libbpf.h], [],
278 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
280 AC_CHECK_HEADER([linux/if_xdp.h], [],
281 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
283 AC_CHECK_HEADER([bpf/xsk.h], [],
284 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
286 AC_CHECK_FUNCS([pthread_spin_lock], [],
287 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
289 AC_DEFINE([HAVE_AF_XDP], [1],
290 [Define to 1 if AF_XDP support is available and enabled.])
291 LIBBPF_LDADD=" -lbpf -lelf"
292 AC_SUBST([LIBBPF_LDADD])
294 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
295 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
296 [XDP need wakeup support detected in xsk.h.])
297 ], [], [[#include <bpf/xsk.h>]])
299 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
304 dnl Configure DPDK source tree
305 AC_DEFUN([OVS_CHECK_DPDK], [
307 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
308 [Specify the DPDK build directory])],
311 AC_MSG_CHECKING([whether dpdk is enabled])
312 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
319 DPDK_AUTO_DISCOVER="true"
320 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
321 DPDK_INCLUDE="$DPDK_CFLAGS"
322 DPDK_LIB="$DPDK_LIBS"], [
323 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
327 DPDK_AUTO_DISCOVER="false"
328 DPDK_INCLUDE_PATH="$with_dpdk/include"
329 # If 'with_dpdk' is passed install directory, point to headers
330 # installed in $DESTDIR/$prefix/include/dpdk
331 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
332 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
333 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
334 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
336 DPDK_LIB_DIR="$with_dpdk/lib"
341 ovs_save_CFLAGS="$CFLAGS"
342 ovs_save_LDFLAGS="$LDFLAGS"
343 CFLAGS="$CFLAGS $DPDK_INCLUDE"
344 if test "$DPDK_AUTO_DISCOVER" = "false"; then
345 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
348 AC_CHECK_HEADERS([rte_config.h], [], [
349 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
350 ], [AC_INCLUDES_DEFAULT])
352 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
353 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
354 ], [], [[#include <rte_config.h>]])
356 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
357 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
358 ], [], [[#include <rte_config.h>]])
360 AC_MSG_CHECKING([whether DPDK pdump support is enabled])
363 [AC_HELP_STRING([--enable-dpdk-pdump],
364 [Enable DPDK pdump packet capture support])],
365 [AC_MSG_RESULT([yes])
366 AC_MSG_WARN([DPDK pdump is deprecated, consider using ovs-tcpdump instead])
367 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
368 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
369 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
370 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
372 AC_MSG_ERROR([RTE_LIBRTE_PDUMP is not defined in rte_config.h])
373 ], [[#include <rte_config.h>]])
375 AC_MSG_ERROR([RTE_LIBRTE_PMD_PCAP is not defined in rte_config.h])
376 ], [[#include <rte_config.h>]])],
377 [AC_MSG_RESULT([no])])
379 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
380 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
381 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
382 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
383 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
384 ], [[#include <rte_config.h>]])
385 ], [], [[#include <rte_config.h>]])
387 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
388 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
389 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
390 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
391 ], [[#include <rte_config.h>]])
392 ], [], [[#include <rte_config.h>]])
394 # DPDK uses dlopen to load plugins.
395 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
397 AC_MSG_CHECKING([whether linking with dpdk works])
398 LIBS="$DPDK_LIB $LIBS"
400 [AC_LANG_PROGRAM([#include <rte_config.h>
401 #include <rte_eal.h>],
402 [int rte_argc; char ** rte_argv;
403 rte_eal_init(rte_argc, rte_argv);])],
404 [AC_MSG_RESULT([yes])
407 if test "$DPDK_AUTO_DISCOVER" = "true"; then
408 AC_MSG_ERROR(m4_normalize([
409 Could not find DPDK library in default search path, Use --with-dpdk
410 to specify the DPDK library installed in non-standard location]))
412 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
416 CFLAGS="$ovs_save_CFLAGS"
417 LDFLAGS="$ovs_save_LDFLAGS"
418 if test "$DPDK_AUTO_DISCOVER" = "false"; then
419 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
421 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
422 OVS_ENABLE_OPTION([-mssse3])
424 # DPDK pmd drivers are not linked unless --whole-archive is used.
426 # This happens because the rest of the DPDK code doesn't use any symbol in
427 # the pmd driver objects, and the drivers register themselves using an
428 # __attribute__((constructor)) function.
430 # These options are specified inside a single -Wl directive to prevent
431 # autotools from reordering them.
433 # OTOH newer versions of dpdk pkg-config (generated with Meson)
434 # will already have flagged just the right set of libs with
435 # --whole-archive - in those cases do not wrap it once more.
437 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
438 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
440 AC_SUBST([DPDK_vswitchd_LDFLAGS])
441 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
444 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
447 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
449 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
450 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
451 dnl <REGEX> translated to uppercase.
452 AC_DEFUN([OVS_GREP_IFELSE], [
453 AC_MSG_CHECKING([whether $2 matches in $1])
455 grep '$2' $1 >/dev/null 2>&1
460 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
467 AC_MSG_ERROR([grep exited with status $status])
471 AC_MSG_RESULT([file not found])
476 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
478 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
479 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
480 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
481 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
482 dnl translated to uppercase.
483 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
484 AC_MSG_CHECKING([whether $2 has member $3 in $1])
486 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
491 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
498 AC_MSG_ERROR([grep exited with status $status])
502 AC_MSG_RESULT([file not found])
507 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
509 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
510 dnl the function signature starting from the line matching FUNCTION
511 dnl and ending with the line containing the closing parenthesis. If
512 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
513 dnl IF-MATCH is empty then it defines to
514 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
515 dnl <REGEX> translated to uppercase.
516 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
517 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
519 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
524 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
531 AC_MSG_ERROR([grep exited with status $status])
535 AC_MSG_RESULT([file not found])
542 dnl Defines NAME to 1 in kcompat.h.
543 AC_DEFUN([OVS_DEFINE], [
544 echo '#define $1 1' >> datapath/linux/kcompat.h.new
547 dnl OVS_CHECK_LINUX_COMPAT
549 dnl Runs various Autoconf checks on the Linux kernel source in
550 dnl the directory in $KBUILD.
551 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
552 rm -f datapath/linux/kcompat.h.new
553 mkdir -p datapath/linux
554 : > datapath/linux/kcompat.h.new
556 echo '#include <linux/version.h>
557 #ifndef RHEL_RELEASE_CODE
558 #define RHEL_RELEASE_CODE 0
559 #define RHEL_RELEASE_VERSION(a, b) 0
560 #endif' >> datapath/linux/kcompat.h.new
562 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
563 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
565 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
566 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
568 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
569 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
570 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
572 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
573 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
574 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
576 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
577 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
578 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
579 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
581 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
582 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
584 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
585 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
586 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
587 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
588 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
589 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
591 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
592 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
593 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
594 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
595 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
596 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
598 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
599 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
600 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
601 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
602 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
603 [ip_do_fragment], [net],
604 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
605 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
606 [ip_local_out], [net],
607 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
609 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
611 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
612 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
613 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
614 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
615 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
616 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
617 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
618 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
619 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
620 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
622 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
624 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
626 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
627 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
628 [sub_frag_mem_limit], [struct.netns_frags],
629 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
630 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
631 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
632 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
633 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
635 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
636 dnl OVS does not really need ipv6 label field, but its presence signifies that
637 dnl the stack has all required ipv6 support.
638 dnl OVS also does not need dst_cache But this dependency allows us to write
639 dnl much cleaner code.
641 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
643 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
644 [iptunnel_pull_offloads],
645 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
646 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
647 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
649 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
650 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
651 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
652 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
653 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
654 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
655 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
656 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
657 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
658 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
659 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
660 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
661 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
662 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
663 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
664 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
665 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
666 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
667 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
668 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
669 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
670 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
671 dnl So check type of tstats.
672 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
673 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
674 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
675 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
676 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
677 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
678 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
679 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
680 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
681 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
682 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
684 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
685 [netdev_master_upper_dev_link], [upper_priv],
686 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
687 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
688 [netdev_master_upper_dev_link_rh],
689 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
691 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
693 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
694 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
695 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
696 [dev_change_flags], [extack],
697 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
699 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
700 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
701 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
702 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
703 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
704 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
705 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
706 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
707 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
708 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
709 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
710 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
713 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
714 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
716 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
717 [nf_conn], [struct timer_list[[ \t]]*timeout],
718 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
719 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
720 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
722 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
723 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
724 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
725 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
726 [nf_ct_get_tuplepr], [struct.net],
727 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
728 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
730 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
731 [nf_ct_is_untracked])
732 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
733 [nf_ct_invert_tuplepr])
734 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
736 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
738 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
740 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
741 [nf_connlabels_get], [int bit],
742 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
743 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
744 [nf_conn_labels], [words])
745 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
746 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
747 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
748 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
749 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
750 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
751 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
752 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
753 [int nf_conncount_add],
754 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
755 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
756 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
757 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
758 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
759 [\(*nf_ct_timeout_find_get_hook\)], [net],
760 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
762 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
764 [OVS_DEFINE([HAVE_PRANDOM_U32])])
765 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
767 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
768 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
769 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
770 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
771 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
773 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
774 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
775 [rcu_read_lock_held])])
776 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
777 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
778 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
779 [rtnl_create_link], [extack],
780 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
781 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
783 # Check for the proto_data_valid member in struct sk_buff. The [^@]
784 # is necessary because some versions of this header remove the
785 # member but retain the kerneldoc comment that describes it (which
786 # starts with @). The brackets must be doubled because of m4
788 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
789 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
790 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
791 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
792 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
794 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
796 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
797 [OVS_DEFINE([HAVE_U16_RXHASH])])
798 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
799 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
800 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
801 [skb_copy_from_linear_data_offset])
802 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
803 [skb_reset_tail_pointer])
804 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
805 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
806 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
807 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
808 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
809 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
810 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
811 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
812 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
813 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
814 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
815 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
816 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
817 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
818 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
819 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
820 [OVS_DEFINE([HAVE_L4_RXHASH])])
821 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
822 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
823 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
824 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
825 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
826 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
827 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
828 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
829 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
831 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
832 [OVS_DEFINE([HAVE_BOOL_TYPE])])
833 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
834 [OVS_DEFINE([HAVE_CSUM_TYPES])])
835 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
836 [OVS_DEFINE([HAVE_CSUM_TYPES])])
838 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
839 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
841 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
842 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
844 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
845 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
846 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
847 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
848 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
849 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
850 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
851 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
852 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
853 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
854 [genl_notify], [net],
855 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
858 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
859 [genl_multicast_group], [id])
860 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
862 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
863 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
864 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
865 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
866 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
867 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
868 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
869 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
870 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
872 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
873 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
874 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
875 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
876 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
877 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
878 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
879 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
880 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
881 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
882 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
883 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
884 [nla_parse], [netlink_ext_ack],
885 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
887 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
889 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
890 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
891 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
892 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
893 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
895 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
896 [metadata_dst_alloc], [metadata_type])
898 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
900 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
901 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
902 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
903 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
904 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
905 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
906 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
907 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
908 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
909 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
912 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
913 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
914 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
915 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
917 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
918 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
919 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
920 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
921 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
922 [udp_add_offload], [net],
923 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
924 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
925 [nf_defrag_ipv6_enable], [net],
926 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
927 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
928 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
929 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
931 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
932 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
933 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
934 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
935 [nf_conntrack_helper_put],
936 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
937 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
938 [nf_nat_helper_try_module_get])
939 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
941 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
942 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
943 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
944 [OVS_DEFINE([HAVE_DST_NOCACHE])])
945 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
947 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
948 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
950 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
951 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
953 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
954 [netdev_master_upper_dev_link], [extack],
955 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
956 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
957 [__LINUX_COMPILER_TYPES_H],
958 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
959 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
961 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
962 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
963 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
964 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
965 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
967 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
968 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
969 frag_percpu_counter_batch[],
970 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
971 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
972 [null_compute_pseudo],
973 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
974 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
975 [__skb_checksum_convert],
976 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
977 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
979 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
980 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
982 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
983 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
985 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
986 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
987 [ip6_make_flowlabel], [fl6],
988 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
989 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
991 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
992 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
994 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
995 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
997 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
998 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
999 [skb_set_inner_ipproto],
1000 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1001 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1002 [tunnel_encap_types],
1003 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1004 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1005 [IFLA_IPTUN_ENCAP_TYPE],
1006 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1007 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1008 [IFLA_IPTUN_COLLECT_METADATA],
1009 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
1010 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1011 [IFLA_GRE_ENCAP_DPORT])
1012 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1013 [IFLA_GRE_COLLECT_METADATA])
1014 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1015 [IFLA_GRE_IGNORE_DF])
1016 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1018 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1019 [IFLA_GRE_ERSPAN_INDEX])
1020 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1021 [IFLA_GRE_ERSPAN_HWID])
1022 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1023 [IFLA_IPTUN_FWMARK])
1024 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1026 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
1027 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1029 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
1030 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1031 [skb_checksum_simple_validate])
1032 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1033 [void.*ndo_get_stats64],
1034 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
1035 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1036 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
1037 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1038 [ip_tunnel_info_opts_set], [flags],
1039 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
1040 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1042 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
1043 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1044 [OVS_DEFINE([HAVE_OVERFLOW_H])])
1045 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1046 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
1047 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1048 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1049 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1050 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
1051 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1052 [nf_conntrack_l3proto],
1053 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
1054 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1055 [nf_conntrack_in], [nf_hook_state],
1056 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
1057 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1058 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1059 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1060 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1061 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1062 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1063 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1064 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1065 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1066 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1067 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
1068 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1069 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
1071 if cmp -s datapath/linux/kcompat.h.new \
1072 datapath/linux/kcompat.h >/dev/null 2>&1; then
1073 rm datapath/linux/kcompat.h.new
1075 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1079 dnl Checks for net/if_dl.h.
1081 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1083 AC_DEFUN([OVS_CHECK_IF_DL],
1084 [AC_CHECK_HEADER([net/if_dl.h],
1087 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1088 if test "$HAVE_IF_DL" = yes; then
1089 AC_DEFINE([HAVE_IF_DL], [1],
1090 [Define to 1 if net/if_dl.h is available.])
1092 # On these platforms we use libpcap to access network devices.
1093 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1096 dnl Checks for buggy strtok_r.
1098 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1099 dnl with optimization that can cause segfaults:
1101 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1102 AC_DEFUN([OVS_CHECK_STRTOK_R],
1104 [whether strtok_r macro segfaults on some inputs],
1105 [ovs_cv_strtok_r_bug],
1107 [AC_LANG_PROGRAM([#include <stdio.h>
1110 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1111 /* Assume bug is present, because relatively minor
1112 changes in compiler settings (e.g. optimization
1113 level) can make it crop up. */
1116 char string[] = ":::";
1117 char *save_ptr = (char *) 0xc0ffee;
1118 char *token1, *token2;
1119 token1 = strtok_r(string, ":", &save_ptr);
1120 token2 = strtok_r(NULL, ":", &save_ptr);
1121 freopen ("/dev/null", "w", stdout);
1122 printf ("%s %s\n", token1, token2);
1126 [ovs_cv_strtok_r_bug=no],
1127 [ovs_cv_strtok_r_bug=yes],
1128 [ovs_cv_strtok_r_bug=yes])])
1129 if test $ovs_cv_strtok_r_bug = yes; then
1130 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1131 [Define if strtok_r macro segfaults on some inputs])
1135 dnl ----------------------------------------------------------------------
1136 dnl These macros are from GNU PSPP, with the following original license:
1137 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1138 dnl This file is free software; the Free Software Foundation
1139 dnl gives unlimited permission to copy and/or distribute it,
1140 dnl with or without modifications, as long as this notice is preserved.
1142 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1143 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1144 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1145 [ovs_save_CFLAGS="$CFLAGS"
1146 dnl Include -Werror in the compiler options, because without -Werror
1147 dnl clang's GCC-compatible compiler driver does not return a failure
1148 dnl exit status even though it complains about options it does not
1151 dnl Also, check stderr as gcc exits with status 0 for options
1152 dnl rejected at getopt level.
1153 dnl % touch /tmp/a.c
1154 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1155 dnl gcc: unrecognized option '-Qunused-arguments'
1159 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1160 dnl it does not understand, unless it has another error to report, so
1161 dnl instead of testing for -Wno-<foo>, test for the positive version.
1162 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1164 [AC_LANG_SOURCE([int x;])],
1165 [if test -s conftest.err && grep "unrecognized option" conftest.err
1172 CFLAGS="$ovs_save_CFLAGS"])
1173 if test $ovs_cv_name = yes; then
1174 m4_if([$2], [], [:], [$2])
1176 m4_if([$3], [], [:], [$3])
1180 dnl OVS_CHECK_WERROR
1182 dnl Check whether the C compiler accepts -Werror.
1183 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1184 AC_DEFUN([OVS_CHECK_WERROR],
1186 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1188 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1189 dnl Check whether the given C compiler OPTION is accepted.
1190 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1191 AC_DEFUN([OVS_CHECK_CC_OPTION],
1192 [AC_REQUIRE([OVS_CHECK_WERROR])
1193 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1195 dnl OVS_ENABLE_OPTION([OPTION])
1196 dnl Check whether the given C compiler OPTION is accepted.
1197 dnl If so, add it to WARNING_FLAGS.
1198 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1199 AC_DEFUN([OVS_ENABLE_OPTION],
1200 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1201 AC_SUBST([WARNING_FLAGS])])
1203 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1204 dnl Check whether the given C compiler OPTION is accepted.
1205 dnl If so, enable the given Automake CONDITIONAL.
1207 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1208 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1209 [OVS_CHECK_CC_OPTION(
1210 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1211 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1212 dnl ----------------------------------------------------------------------
1214 dnl Check for too-old XenServer.
1215 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1216 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1217 [if test -e /etc/redhat-release; then
1218 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1220 if test -z "$ovs_cv_xsversion"; then
1221 ovs_cv_xsversion=none
1223 case $ovs_cv_xsversion in
1227 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1228 [[6-9]]* | dnl XenServer 6 or later
1229 5.[[7-9]]* | dnl XenServer 5.7 or later
1230 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1231 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1232 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1236 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1240 dnl OVS_CHECK_SPARSE_TARGET
1242 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1243 dnl target for which the code is being built. This helps it out.
1244 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1246 [target hint for cgcc],
1247 [ac_cv_sparse_target],
1248 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1249 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1250 [x86_64-*], [ac_cv_sparse_target=x86_64],
1251 [ac_cv_sparse_target=other])])
1252 AS_CASE([$ac_cv_sparse_target],
1253 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1254 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1255 [SPARSEFLAGS= CGCCFLAGS=])
1257 dnl Get the default defines for vector instructions from compiler to
1258 dnl allow "sparse" correctly check the same code that will be built.
1259 dnl Required for checking DPDK headers.
1260 AC_MSG_CHECKING([vector options for cgcc])
1261 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1262 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1263 AC_MSG_RESULT([$VECTOR])
1264 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1266 AC_SUBST([SPARSEFLAGS])
1267 AC_SUBST([CGCCFLAGS])])
1269 dnl OVS_SPARSE_EXTRA_INCLUDES
1271 dnl The cgcc script from "sparse" does not search gcc's default
1272 dnl search path. Get the default search path from GCC and pass
1274 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1275 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1276 [`$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 ' ' `] ))
1278 dnl OVS_ENABLE_SPARSE
1279 AC_DEFUN([OVS_ENABLE_SPARSE],
1280 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1281 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1284 AC_CONFIG_COMMANDS_PRE(
1285 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1289 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1290 [], [enable_sparse=no])
1291 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1293 dnl OVS_CTAGS_IDENTIFIERS
1295 dnl ctags ignores symbols with extras identifiers. This builds a list of
1296 dnl specially handled identifiers to be ignored.
1297 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1298 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1299 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
1301 dnl OVS_PTHREAD_SET_NAME
1303 dnl This checks for three known variants of pthreads functions for setting
1304 dnl the name of the current thread:
1306 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1307 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1308 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1310 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1311 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1314 dnl This macro defines:
1316 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1317 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1318 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1319 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1320 [AC_CHECK_FUNCS([pthread_set_name_np])
1321 if test $ac_cv_func_pthread_set_name_np != yes; then
1323 [for pthread_setname_np() variant],
1324 [ovs_cv_pthread_setname_np],
1326 [AC_LANG_PROGRAM([#include <pthread.h>
1327 ], [pthread_setname_np(pthread_self(), "name");])],
1328 [ovs_cv_pthread_setname_np=glibc],
1330 [AC_LANG_PROGRAM([#include <pthread.h>
1331 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1332 [ovs_cv_pthread_setname_np=netbsd],
1333 [ovs_cv_pthread_setname_np=none])])])
1334 case $ovs_cv_pthread_setname_np in # (
1337 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1338 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1342 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1343 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1348 dnl OVS_CHECK_LINUX_HOST.
1350 dnl Checks whether we're building for a Linux host, based on the presence of
1351 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1352 dnl LINUX based on the result.
1353 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1355 [whether __linux__ is defined],
1358 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1359 [ovs_cv_linux=true],
1360 [ovs_cv_linux=false])])
1361 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])