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 5; then
157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.5.x is not supported (please refer to the FAQ for advice)])
159 elif test "$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 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
291 AC_DEFINE([HAVE_AF_XDP], [1],
292 [Define to 1 if AF_XDP support is available and enabled.])
293 LIBBPF_LDADD=" -lbpf -lelf"
294 AC_SUBST([LIBBPF_LDADD])
296 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
297 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
298 [XDP need wakeup support detected in xsk.h.])
299 ], [], [[#include <bpf/xsk.h>]])
301 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
306 dnl Configure DPDK source tree
307 AC_DEFUN([OVS_CHECK_DPDK], [
309 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
310 [Specify the DPDK build directory])],
313 AC_MSG_CHECKING([whether dpdk is enabled])
314 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
321 DPDK_AUTO_DISCOVER="true"
322 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
323 DPDK_INCLUDE="$DPDK_CFLAGS"
324 DPDK_LIB="$DPDK_LIBS"], [
325 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
329 DPDK_AUTO_DISCOVER="false"
330 DPDK_INCLUDE_PATH="$with_dpdk/include"
331 # If 'with_dpdk' is passed install directory, point to headers
332 # installed in $DESTDIR/$prefix/include/dpdk
333 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
334 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
335 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
336 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
338 DPDK_LIB_DIR="$with_dpdk/lib"
343 ovs_save_CFLAGS="$CFLAGS"
344 ovs_save_LDFLAGS="$LDFLAGS"
345 CFLAGS="$CFLAGS $DPDK_INCLUDE"
346 if test "$DPDK_AUTO_DISCOVER" = "false"; then
347 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
350 AC_CHECK_HEADERS([rte_config.h], [], [
351 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
352 ], [AC_INCLUDES_DEFAULT])
354 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
355 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
356 ], [], [[#include <rte_config.h>]])
358 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
359 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
360 ], [], [[#include <rte_config.h>]])
362 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
363 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
364 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
365 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
366 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
367 ], [[#include <rte_config.h>]])
368 ], [], [[#include <rte_config.h>]])
370 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
371 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
372 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
373 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
374 ], [[#include <rte_config.h>]])
375 ], [], [[#include <rte_config.h>]])
377 # DPDK uses dlopen to load plugins.
378 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
380 AC_MSG_CHECKING([whether linking with dpdk works])
381 LIBS="$DPDK_LIB $LIBS"
383 [AC_LANG_PROGRAM([#include <rte_config.h>
384 #include <rte_eal.h>],
385 [int rte_argc; char ** rte_argv;
386 rte_eal_init(rte_argc, rte_argv);])],
387 [AC_MSG_RESULT([yes])
390 if test "$DPDK_AUTO_DISCOVER" = "true"; then
391 AC_MSG_ERROR(m4_normalize([
392 Could not find DPDK library in default search path, Use --with-dpdk
393 to specify the DPDK library installed in non-standard location]))
395 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
399 CFLAGS="$ovs_save_CFLAGS"
400 LDFLAGS="$ovs_save_LDFLAGS"
401 if test "$DPDK_AUTO_DISCOVER" = "false"; then
402 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
404 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
405 OVS_ENABLE_OPTION([-mssse3])
407 # DPDK pmd drivers are not linked unless --whole-archive is used.
409 # This happens because the rest of the DPDK code doesn't use any symbol in
410 # the pmd driver objects, and the drivers register themselves using an
411 # __attribute__((constructor)) function.
413 # These options are specified inside a single -Wl directive to prevent
414 # autotools from reordering them.
416 # OTOH newer versions of dpdk pkg-config (generated with Meson)
417 # will already have flagged just the right set of libs with
418 # --whole-archive - in those cases do not wrap it once more.
420 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
421 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
423 AC_SUBST([DPDK_vswitchd_LDFLAGS])
424 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
427 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
430 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
432 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
433 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
434 dnl <REGEX> translated to uppercase.
435 AC_DEFUN([OVS_GREP_IFELSE], [
436 AC_MSG_CHECKING([whether $2 matches in $1])
438 grep '$2' $1 >/dev/null 2>&1
443 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
450 AC_MSG_ERROR([grep exited with status $status])
454 AC_MSG_RESULT([file not found])
459 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
461 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
462 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
463 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
464 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
465 dnl translated to uppercase.
466 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
467 AC_MSG_CHECKING([whether $2 has member $3 in $1])
469 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
474 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
481 AC_MSG_ERROR([grep exited with status $status])
485 AC_MSG_RESULT([file not found])
490 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
492 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
493 dnl the function signature starting from the line matching FUNCTION
494 dnl and ending with the line containing the closing parenthesis. If
495 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
496 dnl IF-MATCH is empty then it defines to
497 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
498 dnl <REGEX> translated to uppercase.
499 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
500 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
502 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
507 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
514 AC_MSG_ERROR([grep exited with status $status])
518 AC_MSG_RESULT([file not found])
525 dnl Defines NAME to 1 in kcompat.h.
526 AC_DEFUN([OVS_DEFINE], [
527 echo '#define $1 1' >> datapath/linux/kcompat.h.new
530 dnl OVS_CHECK_LINUX_COMPAT
532 dnl Runs various Autoconf checks on the Linux kernel source in
533 dnl the directory in $KBUILD.
534 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
535 rm -f datapath/linux/kcompat.h.new
536 mkdir -p datapath/linux
537 : > datapath/linux/kcompat.h.new
539 echo '#include <linux/version.h>
540 #ifndef RHEL_RELEASE_CODE
541 #define RHEL_RELEASE_CODE 0
542 #define RHEL_RELEASE_VERSION(a, b) 0
543 #endif' >> datapath/linux/kcompat.h.new
545 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
546 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
548 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
549 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
551 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
552 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
553 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
555 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
556 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
557 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
559 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
560 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
561 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
562 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
564 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
565 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
567 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
568 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
569 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
570 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
571 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
572 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
574 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
575 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
576 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
577 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
578 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
579 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
581 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
582 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
583 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
584 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
585 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
586 [ip_do_fragment], [net],
587 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
588 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
589 [ip_local_out], [net],
590 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
592 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
594 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
595 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
596 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
597 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
598 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
599 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
600 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
601 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
602 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
603 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
605 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
607 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
609 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
610 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
611 [sub_frag_mem_limit], [struct.netns_frags],
612 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
613 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
614 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
615 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
616 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
618 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
619 dnl OVS does not really need ipv6 label field, but its presence signifies that
620 dnl the stack has all required ipv6 support.
621 dnl OVS also does not need dst_cache But this dependency allows us to write
622 dnl much cleaner code.
624 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
626 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
627 [iptunnel_pull_offloads],
628 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
629 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
630 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
632 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
633 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
634 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
635 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
636 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
637 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
638 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
639 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
640 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
641 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
642 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
643 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
644 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
645 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
646 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
647 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
648 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
649 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
650 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
651 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
652 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
653 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
654 dnl So check type of tstats.
655 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
656 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
657 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
658 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
659 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
660 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
661 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
662 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
663 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
664 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
665 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
667 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
668 [netdev_master_upper_dev_link], [upper_priv],
669 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
670 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
671 [netdev_master_upper_dev_link_rh],
672 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
674 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
676 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
677 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
678 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
679 [dev_change_flags], [extack],
680 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
682 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
683 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
684 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
685 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
686 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
687 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
688 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
689 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
690 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
691 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
692 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
693 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
696 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
697 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
699 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
700 [nf_conn], [struct timer_list[[ \t]]*timeout],
701 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
702 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
703 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
705 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
706 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
707 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
708 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
709 [nf_ct_get_tuplepr], [struct.net],
710 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
711 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
713 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
714 [nf_ct_is_untracked])
715 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
716 [nf_ct_invert_tuplepr])
717 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
719 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
721 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
723 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
724 [nf_connlabels_get], [int bit],
725 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
726 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
727 [nf_conn_labels], [words])
728 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
729 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
730 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
731 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
732 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
733 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
734 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
735 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
736 [int nf_conncount_add],
737 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
738 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
739 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
740 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
741 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
742 [\(*nf_ct_timeout_find_get_hook\)], [net],
743 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
745 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
747 [OVS_DEFINE([HAVE_PRANDOM_U32])])
748 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
750 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
751 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
752 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
753 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
754 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
756 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
757 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
758 [rcu_read_lock_held])])
759 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
760 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
761 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
762 [rtnl_create_link], [extack],
763 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
764 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
766 # Check for the proto_data_valid member in struct sk_buff. The [^@]
767 # is necessary because some versions of this header remove the
768 # member but retain the kerneldoc comment that describes it (which
769 # starts with @). The brackets must be doubled because of m4
771 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
772 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
773 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
774 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
775 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
776 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
777 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
778 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
779 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
780 [OVS_DEFINE([HAVE_U16_RXHASH])])
781 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
782 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
783 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
784 [skb_copy_from_linear_data_offset])
785 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
786 [skb_reset_tail_pointer])
787 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
788 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
789 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
790 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
791 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
792 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
794 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
796 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
797 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
798 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
799 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
800 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
801 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
802 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
803 [OVS_DEFINE([HAVE_L4_RXHASH])])
804 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
805 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
806 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
807 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
808 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
809 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
810 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
811 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
812 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
814 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
815 [OVS_DEFINE([HAVE_CSUM_TYPES])])
816 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
817 [OVS_DEFINE([HAVE_CSUM_TYPES])])
819 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
820 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
822 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
823 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
825 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
826 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
827 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
828 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
829 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
830 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
831 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
832 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
833 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
834 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
835 [genl_notify], [net],
836 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
839 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
840 [genl_multicast_group], [id])
841 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
843 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
844 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
845 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
846 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
847 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
848 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
849 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
850 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
851 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
853 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
854 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
855 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
856 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
857 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
858 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
859 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
860 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
861 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
862 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
863 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
864 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
865 [nla_parse], [netlink_ext_ack],
866 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
868 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
870 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
871 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
872 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
873 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
874 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
876 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
877 [metadata_dst_alloc], [metadata_type])
879 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
881 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
882 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
883 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
884 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
885 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
886 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
887 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
888 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
889 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
890 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
893 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
894 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
895 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
896 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
898 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
899 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
900 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
901 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
902 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
903 [udp_add_offload], [net],
904 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
905 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
906 [nf_defrag_ipv6_enable], [net],
907 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
908 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
909 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
910 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
912 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
913 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
914 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
915 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
916 [nf_conntrack_helper_put],
917 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
918 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
919 [nf_nat_helper_try_module_get])
920 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
922 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
923 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
924 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
925 [OVS_DEFINE([HAVE_DST_NOCACHE])])
926 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
928 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
929 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
931 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
932 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
934 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
935 [netdev_master_upper_dev_link], [extack],
936 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
937 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
938 [__LINUX_COMPILER_TYPES_H],
939 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
940 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
942 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
943 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
944 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
945 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
946 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
948 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
949 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
950 frag_percpu_counter_batch[],
951 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
952 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
953 [null_compute_pseudo],
954 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
955 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
956 [__skb_checksum_convert],
957 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
958 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
960 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
961 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
963 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
964 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
966 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
967 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
968 [ip6_make_flowlabel], [fl6],
969 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
970 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
972 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
973 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
975 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
976 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
978 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
979 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
980 [skb_set_inner_ipproto],
981 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
982 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
983 [tunnel_encap_types],
984 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
985 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
986 [IFLA_IPTUN_ENCAP_TYPE],
987 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
988 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
989 [IFLA_IPTUN_COLLECT_METADATA],
990 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
991 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
992 [IFLA_GRE_ENCAP_DPORT])
993 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
994 [IFLA_GRE_COLLECT_METADATA])
995 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
996 [IFLA_GRE_IGNORE_DF])
997 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
999 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1000 [IFLA_GRE_ERSPAN_INDEX])
1001 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1002 [IFLA_GRE_ERSPAN_HWID])
1003 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1004 [IFLA_IPTUN_FWMARK])
1005 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1007 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
1008 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1010 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
1011 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1012 [skb_checksum_simple_validate])
1013 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1014 [void.*ndo_get_stats64],
1015 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
1016 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1017 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
1018 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1019 [ip_tunnel_info_opts_set], [flags],
1020 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
1021 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1023 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
1024 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1025 [OVS_DEFINE([HAVE_OVERFLOW_H])])
1026 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1027 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
1028 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1029 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1030 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1031 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
1032 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1033 [nf_conntrack_l3proto],
1034 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
1035 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1036 [nf_conntrack_in], [nf_hook_state],
1037 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
1038 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1039 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1040 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1041 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1042 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1043 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1044 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1045 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1046 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1047 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1048 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
1049 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1050 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
1051 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1052 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
1053 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1055 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
1056 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1057 [nla_parse_deprecated_strict],
1058 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
1060 if cmp -s datapath/linux/kcompat.h.new \
1061 datapath/linux/kcompat.h >/dev/null 2>&1; then
1062 rm datapath/linux/kcompat.h.new
1064 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1068 dnl Checks for net/if_dl.h.
1070 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1072 AC_DEFUN([OVS_CHECK_IF_DL],
1073 [AC_CHECK_HEADER([net/if_dl.h],
1076 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1077 if test "$HAVE_IF_DL" = yes; then
1078 AC_DEFINE([HAVE_IF_DL], [1],
1079 [Define to 1 if net/if_dl.h is available.])
1081 # On these platforms we use libpcap to access network devices.
1082 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1085 dnl Checks for buggy strtok_r.
1087 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1088 dnl with optimization that can cause segfaults:
1090 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1091 AC_DEFUN([OVS_CHECK_STRTOK_R],
1093 [whether strtok_r macro segfaults on some inputs],
1094 [ovs_cv_strtok_r_bug],
1096 [AC_LANG_PROGRAM([#include <stdio.h>
1099 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1100 /* Assume bug is present, because relatively minor
1101 changes in compiler settings (e.g. optimization
1102 level) can make it crop up. */
1105 char string[] = ":::";
1106 char *save_ptr = (char *) 0xc0ffee;
1107 char *token1, *token2;
1108 token1 = strtok_r(string, ":", &save_ptr);
1109 token2 = strtok_r(NULL, ":", &save_ptr);
1110 freopen ("/dev/null", "w", stdout);
1111 printf ("%s %s\n", token1, token2);
1115 [ovs_cv_strtok_r_bug=no],
1116 [ovs_cv_strtok_r_bug=yes],
1117 [ovs_cv_strtok_r_bug=yes])])
1118 if test $ovs_cv_strtok_r_bug = yes; then
1119 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1120 [Define if strtok_r macro segfaults on some inputs])
1124 dnl ----------------------------------------------------------------------
1125 dnl These macros are from GNU PSPP, with the following original license:
1126 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1127 dnl This file is free software; the Free Software Foundation
1128 dnl gives unlimited permission to copy and/or distribute it,
1129 dnl with or without modifications, as long as this notice is preserved.
1131 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1132 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1133 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1134 [ovs_save_CFLAGS="$CFLAGS"
1135 dnl Include -Werror in the compiler options, because without -Werror
1136 dnl clang's GCC-compatible compiler driver does not return a failure
1137 dnl exit status even though it complains about options it does not
1140 dnl Also, check stderr as gcc exits with status 0 for options
1141 dnl rejected at getopt level.
1142 dnl % touch /tmp/a.c
1143 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1144 dnl gcc: unrecognized option '-Qunused-arguments'
1148 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1149 dnl it does not understand, unless it has another error to report, so
1150 dnl instead of testing for -Wno-<foo>, test for the positive version.
1151 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1153 [AC_LANG_SOURCE([int x;])],
1154 [if test -s conftest.err && grep "unrecognized option" conftest.err
1161 CFLAGS="$ovs_save_CFLAGS"])
1162 if test $ovs_cv_name = yes; then
1163 m4_if([$2], [], [:], [$2])
1165 m4_if([$3], [], [:], [$3])
1169 dnl OVS_CHECK_WERROR
1171 dnl Check whether the C compiler accepts -Werror.
1172 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1173 AC_DEFUN([OVS_CHECK_WERROR],
1175 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1177 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1178 dnl Check whether the given C compiler OPTION is accepted.
1179 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1180 AC_DEFUN([OVS_CHECK_CC_OPTION],
1181 [AC_REQUIRE([OVS_CHECK_WERROR])
1182 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1184 dnl OVS_ENABLE_OPTION([OPTION])
1185 dnl Check whether the given C compiler OPTION is accepted.
1186 dnl If so, add it to WARNING_FLAGS.
1187 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1188 AC_DEFUN([OVS_ENABLE_OPTION],
1189 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1190 AC_SUBST([WARNING_FLAGS])])
1192 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1193 dnl Check whether the given C compiler OPTION is accepted.
1194 dnl If so, enable the given Automake CONDITIONAL.
1196 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1197 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1198 [OVS_CHECK_CC_OPTION(
1199 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1200 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1201 dnl ----------------------------------------------------------------------
1203 dnl Check for too-old XenServer.
1204 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1205 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1206 [if test -e /etc/redhat-release; then
1207 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1209 if test -z "$ovs_cv_xsversion"; then
1210 ovs_cv_xsversion=none
1212 case $ovs_cv_xsversion in
1216 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1217 [[6-9]]* | dnl XenServer 6 or later
1218 5.[[7-9]]* | dnl XenServer 5.7 or later
1219 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1220 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1221 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1225 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1229 dnl OVS_CHECK_SPARSE_TARGET
1231 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1232 dnl target for which the code is being built. This helps it out.
1233 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1235 [target hint for cgcc],
1236 [ac_cv_sparse_target],
1237 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1238 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1239 [x86_64-*], [ac_cv_sparse_target=x86_64],
1240 [ac_cv_sparse_target=other])])
1241 AS_CASE([$ac_cv_sparse_target],
1242 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1243 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1244 [SPARSEFLAGS= CGCCFLAGS=])
1246 dnl Get the default defines for vector instructions from compiler to
1247 dnl allow "sparse" correctly check the same code that will be built.
1248 dnl Required for checking DPDK headers.
1249 AC_MSG_CHECKING([vector options for cgcc])
1250 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1251 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1252 AC_MSG_RESULT([$VECTOR])
1253 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1255 AC_SUBST([SPARSEFLAGS])
1256 AC_SUBST([CGCCFLAGS])])
1258 dnl OVS_SPARSE_EXTRA_INCLUDES
1260 dnl The cgcc script from "sparse" does not search gcc's default
1261 dnl search path. Get the default search path from GCC and pass
1263 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1264 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1265 [`$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 ' ' `] ))
1267 dnl OVS_ENABLE_SPARSE
1268 AC_DEFUN([OVS_ENABLE_SPARSE],
1269 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1270 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1273 AC_CONFIG_COMMANDS_PRE(
1274 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1278 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1279 [], [enable_sparse=no])
1280 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1282 dnl OVS_CTAGS_IDENTIFIERS
1284 dnl ctags ignores symbols with extras identifiers. This builds a list of
1285 dnl specially handled identifiers to be ignored.
1286 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1287 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1288 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
1290 dnl OVS_PTHREAD_SET_NAME
1292 dnl This checks for three known variants of pthreads functions for setting
1293 dnl the name of the current thread:
1295 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1296 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1297 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1299 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1300 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1303 dnl This macro defines:
1305 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1306 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1307 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1308 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1309 [AC_CHECK_FUNCS([pthread_set_name_np])
1310 if test $ac_cv_func_pthread_set_name_np != yes; then
1312 [for pthread_setname_np() variant],
1313 [ovs_cv_pthread_setname_np],
1315 [AC_LANG_PROGRAM([#include <pthread.h>
1316 ], [pthread_setname_np(pthread_self(), "name");])],
1317 [ovs_cv_pthread_setname_np=glibc],
1319 [AC_LANG_PROGRAM([#include <pthread.h>
1320 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1321 [ovs_cv_pthread_setname_np=netbsd],
1322 [ovs_cv_pthread_setname_np=none])])])
1323 case $ovs_cv_pthread_setname_np in # (
1326 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1327 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1331 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1332 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1337 dnl OVS_CHECK_LINUX_HOST.
1339 dnl Checks whether we're building for a Linux host, based on the presence of
1340 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1341 dnl LINUX based on the result.
1342 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1344 [whether __linux__ is defined],
1347 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1348 [ovs_cv_linux=true],
1349 [ovs_cv_linux=false])])
1350 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])