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_TC
179 dnl Configure Linux tc compat.
180 AC_DEFUN([OVS_CHECK_LINUX_TC], [
182 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
183 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
185 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
186 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
189 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
190 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
192 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
193 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
196 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
197 int x = TCA_MPLS_TTL;
199 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
200 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
204 int x = TCA_TUNNEL_KEY_ENC_TTL;
206 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
207 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
211 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
213 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
214 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
217 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
218 int x = TCA_SKBEDIT_FLAGS;
220 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
221 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
224 dnl OVS_CHECK_LINUX_SCTP_CT
226 dnl Checks for kernels which need additional SCTP state
227 AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
229 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
230 #include <linux/netfilter/nfnetlink_conntrack.h>
231 #include <linux/netfilter/nf_conntrack_common.h>
232 #include <linux/netfilter/nf_conntrack_sctp.h>], [
233 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
235 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
236 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
239 dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
241 dnl Check for a function in a library list.
242 AC_DEFUN([OVS_FIND_DEPENDENCY], [
243 AC_SEARCH_LIBS([$1], [$2], [], [
244 AC_MSG_ERROR([unable to find $3, install the dependency package])
248 dnl OVS_CHECK_LINUX_AF_XDP
250 dnl Check both Linux kernel AF_XDP and libbpf support
251 AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
252 AC_ARG_ENABLE([afxdp],
253 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
254 [], [enable_afxdp=no])
255 AC_MSG_CHECKING([whether AF_XDP is enabled])
256 if test "$enable_afxdp" != yes; then
263 AC_CHECK_HEADER([bpf/libbpf.h], [],
264 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
266 AC_CHECK_HEADER([linux/if_xdp.h], [],
267 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
269 AC_CHECK_HEADER([bpf/xsk.h], [],
270 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
272 AC_CHECK_FUNCS([pthread_spin_lock], [],
273 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
275 AC_DEFINE([HAVE_AF_XDP], [1],
276 [Define to 1 if AF_XDP support is available and enabled.])
277 LIBBPF_LDADD=" -lbpf -lelf"
278 AC_SUBST([LIBBPF_LDADD])
280 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
285 dnl Configure DPDK source tree
286 AC_DEFUN([OVS_CHECK_DPDK], [
288 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
289 [Specify the DPDK build directory])],
292 AC_MSG_CHECKING([whether dpdk datapath is enabled])
293 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
300 DPDK_AUTO_DISCOVER="true"
301 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
302 DPDK_INCLUDE="$DPDK_CFLAGS"
303 DPDK_LIB="$DPDK_LIBS"], [
304 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
308 DPDK_AUTO_DISCOVER="false"
309 DPDK_INCLUDE_PATH="$with_dpdk/include"
310 # If 'with_dpdk' is passed install directory, point to headers
311 # installed in $DESTDIR/$prefix/include/dpdk
312 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
313 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
314 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
315 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
317 DPDK_LIB_DIR="$with_dpdk/lib"
322 ovs_save_CFLAGS="$CFLAGS"
323 ovs_save_LDFLAGS="$LDFLAGS"
324 CFLAGS="$CFLAGS $DPDK_INCLUDE"
325 if test "$DPDK_AUTO_DISCOVER" = "false"; then
326 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
329 AC_CHECK_HEADERS([rte_config.h], [], [
330 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
331 ], [AC_INCLUDES_DEFAULT])
333 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
334 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
335 ], [], [[#include <rte_config.h>]])
337 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
338 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
339 ], [], [[#include <rte_config.h>]])
341 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
342 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
343 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
344 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
345 ], [], [[#include <rte_config.h>]])
346 ], [], [[#include <rte_config.h>]])
348 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
349 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
350 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
351 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
352 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
353 ], [[#include <rte_config.h>]])
354 ], [], [[#include <rte_config.h>]])
356 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
357 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
358 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
359 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
360 ], [[#include <rte_config.h>]])
361 ], [], [[#include <rte_config.h>]])
363 # DPDK uses dlopen to load plugins.
364 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
366 AC_MSG_CHECKING([whether linking with dpdk works])
367 LIBS="$DPDK_LIB $LIBS"
369 [AC_LANG_PROGRAM([#include <rte_config.h>
370 #include <rte_eal.h>],
371 [int rte_argc; char ** rte_argv;
372 rte_eal_init(rte_argc, rte_argv);])],
373 [AC_MSG_RESULT([yes])
376 if test "$DPDK_AUTO_DISCOVER" = "true"; then
377 AC_MSG_ERROR(m4_normalize([
378 Could not find DPDK library in default search path, Use --with-dpdk
379 to specify the DPDK library installed in non-standard location]))
381 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
385 CFLAGS="$ovs_save_CFLAGS"
386 LDFLAGS="$ovs_save_LDFLAGS"
387 if test "$DPDK_AUTO_DISCOVER" = "false"; then
388 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
390 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
391 OVS_ENABLE_OPTION([-mssse3])
393 # DPDK pmd drivers are not linked unless --whole-archive is used.
395 # This happens because the rest of the DPDK code doesn't use any symbol in
396 # the pmd driver objects, and the drivers register themselves using an
397 # __attribute__((constructor)) function.
399 # These options are specified inside a single -Wl directive to prevent
400 # autotools from reordering them.
402 # OTOH newer versions of dpdk pkg-config (generated with Meson)
403 # will already have flagged just the right set of libs with
404 # --whole-archive - in those cases do not wrap it once more.
406 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
407 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
409 AC_SUBST([DPDK_vswitchd_LDFLAGS])
410 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
413 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
416 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
418 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
419 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
420 dnl <REGEX> translated to uppercase.
421 AC_DEFUN([OVS_GREP_IFELSE], [
422 AC_MSG_CHECKING([whether $2 matches in $1])
424 grep '$2' $1 >/dev/null 2>&1
429 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
436 AC_MSG_ERROR([grep exited with status $status])
440 AC_MSG_RESULT([file not found])
445 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
447 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
448 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
449 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
450 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
451 dnl translated to uppercase.
452 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
453 AC_MSG_CHECKING([whether $2 has member $3 in $1])
455 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
460 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
467 AC_MSG_ERROR([grep exited with status $status])
471 AC_MSG_RESULT([file not found])
476 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
478 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
479 dnl the function signature starting from the line matching FUNCTION
480 dnl and ending with the line containing the closing parenthesis. If
481 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
482 dnl IF-MATCH is empty then it defines to
483 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
484 dnl <REGEX> translated to uppercase.
485 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
486 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
488 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
493 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
500 AC_MSG_ERROR([grep exited with status $status])
504 AC_MSG_RESULT([file not found])
511 dnl Defines NAME to 1 in kcompat.h.
512 AC_DEFUN([OVS_DEFINE], [
513 echo '#define $1 1' >> datapath/linux/kcompat.h.new
516 dnl OVS_CHECK_LINUX_COMPAT
518 dnl Runs various Autoconf checks on the Linux kernel source in
519 dnl the directory in $KBUILD.
520 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
521 rm -f datapath/linux/kcompat.h.new
522 mkdir -p datapath/linux
523 : > datapath/linux/kcompat.h.new
525 echo '#include <linux/version.h>
526 #ifndef RHEL_RELEASE_CODE
527 #define RHEL_RELEASE_CODE 0
528 #define RHEL_RELEASE_VERSION(a, b) 0
529 #endif' >> datapath/linux/kcompat.h.new
531 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
532 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
534 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
535 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
537 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
538 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
539 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
541 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
542 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
543 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
545 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
546 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
547 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
548 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
550 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
551 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
553 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
554 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
555 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
556 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
557 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
558 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
560 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
561 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
562 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
563 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
564 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
565 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
567 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
568 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
569 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
570 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
571 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
572 [ip_do_fragment], [net],
573 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
574 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
575 [ip_local_out], [net],
576 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
578 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
580 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
581 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
582 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
583 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
584 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
585 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
586 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
587 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
588 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
589 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
591 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
593 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
595 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
596 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
597 [sub_frag_mem_limit], [struct.netns_frags],
598 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
599 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
600 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
601 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
602 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
604 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
605 dnl OVS does not really need ipv6 label field, but its presence signifies that
606 dnl the stack has all required ipv6 support.
607 dnl OVS also does not need dst_cache But this dependency allows us to write
608 dnl much cleaner code.
610 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
612 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
613 [iptunnel_pull_offloads],
614 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
615 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
616 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
618 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
619 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
620 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
621 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
622 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
623 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
624 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
625 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
626 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
627 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
628 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
629 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
630 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
631 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
632 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
633 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
634 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
635 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
636 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
637 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
638 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
639 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
640 dnl So check type of tstats.
641 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
642 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
643 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
644 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
645 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
646 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
647 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
648 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
649 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
650 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
651 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
653 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
654 [netdev_master_upper_dev_link], [upper_priv],
655 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
656 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
657 [netdev_master_upper_dev_link_rh],
658 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
660 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
662 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
663 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
664 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
665 [dev_change_flags], [extack],
666 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
668 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
669 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
670 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
671 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
672 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
673 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
674 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
675 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
676 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
677 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
678 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
679 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
682 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
683 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
685 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
686 [nf_conn], [struct timer_list[[ \t]]*timeout],
687 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
688 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
689 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
691 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
692 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
693 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
694 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
695 [nf_ct_get_tuplepr], [struct.net],
696 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
697 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
699 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
700 [nf_ct_is_untracked])
701 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
702 [nf_ct_invert_tuplepr])
703 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
705 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
707 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
709 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
710 [nf_connlabels_get], [int bit],
711 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
712 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
713 [nf_conn_labels], [words])
714 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
715 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
716 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
717 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
718 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
719 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
720 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
721 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
722 [int nf_conncount_add],
723 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
724 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
725 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
726 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
727 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
728 [\(*nf_ct_timeout_find_get_hook\)], [net],
729 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
731 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
733 [OVS_DEFINE([HAVE_PRANDOM_U32])])
734 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
736 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
737 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
738 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
739 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
740 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
742 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
743 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
744 [rcu_read_lock_held])])
745 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
746 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
747 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
748 [rtnl_create_link], [extack],
749 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
750 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
752 # Check for the proto_data_valid member in struct sk_buff. The [^@]
753 # is necessary because some versions of this header remove the
754 # member but retain the kerneldoc comment that describes it (which
755 # starts with @). The brackets must be doubled because of m4
757 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
758 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
759 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
760 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
761 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
762 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
763 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
764 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
765 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
766 [OVS_DEFINE([HAVE_U16_RXHASH])])
767 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
768 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
769 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
770 [skb_copy_from_linear_data_offset])
771 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
772 [skb_reset_tail_pointer])
773 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
774 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
775 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
776 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
777 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
778 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
779 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
780 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
781 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
782 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
783 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
784 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
785 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
786 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
787 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
788 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
789 [OVS_DEFINE([HAVE_L4_RXHASH])])
790 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
791 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
792 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
794 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
796 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
797 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
798 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
800 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
801 [OVS_DEFINE([HAVE_BOOL_TYPE])])
802 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
803 [OVS_DEFINE([HAVE_CSUM_TYPES])])
804 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
805 [OVS_DEFINE([HAVE_CSUM_TYPES])])
807 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
808 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
810 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
811 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
813 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
814 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
815 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
816 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
817 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
818 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
819 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
820 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
821 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
822 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
823 [genl_notify], [net],
824 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
827 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
828 [genl_multicast_group], [id])
829 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
831 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
832 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
833 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
834 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
835 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
836 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
837 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
838 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
839 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
841 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
842 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
843 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
844 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
845 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
846 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
847 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
848 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
849 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
850 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
851 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
852 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
853 [nla_parse], [netlink_ext_ack],
854 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
856 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
858 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
859 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
860 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
861 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
862 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
864 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
865 [metadata_dst_alloc], [metadata_type])
867 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
869 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
870 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
871 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
872 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
873 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
874 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
875 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
876 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
877 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
878 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
881 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
882 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
883 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
884 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
886 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
887 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
888 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
889 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
890 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
891 [udp_add_offload], [net],
892 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
893 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
894 [nf_defrag_ipv6_enable], [net],
895 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
896 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
897 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
898 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
900 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
901 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
902 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
903 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
904 [nf_conntrack_helper_put],
905 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
906 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
907 [nf_nat_helper_try_module_get])
908 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
910 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
911 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
912 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
913 [OVS_DEFINE([HAVE_DST_NOCACHE])])
914 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
916 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
917 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
919 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
920 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
922 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
923 [netdev_master_upper_dev_link], [extack],
924 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
925 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
926 [__LINUX_COMPILER_TYPES_H],
927 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
928 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
930 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
931 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
932 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
933 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
934 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
936 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
937 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
938 frag_percpu_counter_batch[],
939 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
940 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
941 [null_compute_pseudo],
942 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
943 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
944 [__skb_checksum_convert],
945 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
946 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
948 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
949 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
951 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
952 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
954 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
955 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
956 [ip6_make_flowlabel], [fl6],
957 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
958 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
960 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
961 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
963 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
964 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
966 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
967 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
968 [skb_set_inner_ipproto],
969 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
970 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
971 [tunnel_encap_types],
972 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
973 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
974 [IFLA_IPTUN_ENCAP_TYPE],
975 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
976 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
977 [IFLA_IPTUN_COLLECT_METADATA],
978 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
979 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
980 [IFLA_GRE_ENCAP_DPORT])
981 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
982 [IFLA_GRE_COLLECT_METADATA])
983 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
984 [IFLA_GRE_IGNORE_DF])
985 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
987 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
988 [IFLA_GRE_ERSPAN_INDEX])
989 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
990 [IFLA_GRE_ERSPAN_HWID])
991 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
993 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
995 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
996 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
998 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
999 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1000 [skb_checksum_simple_validate])
1001 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1002 [void.*ndo_get_stats64],
1003 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
1004 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1005 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
1006 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1007 [ip_tunnel_info_opts_set], [flags],
1008 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
1009 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1011 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
1012 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1013 [OVS_DEFINE([HAVE_OVERFLOW_H])])
1014 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1015 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
1016 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1017 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1018 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1019 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
1020 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1021 [nf_conntrack_l3proto],
1022 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
1023 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1024 [nf_conntrack_in], [nf_hook_state],
1025 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
1026 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1027 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1028 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1029 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1030 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1031 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1032 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1033 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1034 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1035 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1036 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
1038 if cmp -s datapath/linux/kcompat.h.new \
1039 datapath/linux/kcompat.h >/dev/null 2>&1; then
1040 rm datapath/linux/kcompat.h.new
1042 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1046 dnl Checks for net/if_dl.h.
1048 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1050 AC_DEFUN([OVS_CHECK_IF_DL],
1051 [AC_CHECK_HEADER([net/if_dl.h],
1054 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1055 if test "$HAVE_IF_DL" = yes; then
1056 AC_DEFINE([HAVE_IF_DL], [1],
1057 [Define to 1 if net/if_dl.h is available.])
1059 # On these platforms we use libpcap to access network devices.
1060 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1063 dnl Checks for buggy strtok_r.
1065 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1066 dnl with optimization that can cause segfaults:
1068 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1069 AC_DEFUN([OVS_CHECK_STRTOK_R],
1071 [whether strtok_r macro segfaults on some inputs],
1072 [ovs_cv_strtok_r_bug],
1074 [AC_LANG_PROGRAM([#include <stdio.h>
1077 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1078 /* Assume bug is present, because relatively minor
1079 changes in compiler settings (e.g. optimization
1080 level) can make it crop up. */
1083 char string[] = ":::";
1084 char *save_ptr = (char *) 0xc0ffee;
1085 char *token1, *token2;
1086 token1 = strtok_r(string, ":", &save_ptr);
1087 token2 = strtok_r(NULL, ":", &save_ptr);
1088 freopen ("/dev/null", "w", stdout);
1089 printf ("%s %s\n", token1, token2);
1093 [ovs_cv_strtok_r_bug=no],
1094 [ovs_cv_strtok_r_bug=yes],
1095 [ovs_cv_strtok_r_bug=yes])])
1096 if test $ovs_cv_strtok_r_bug = yes; then
1097 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1098 [Define if strtok_r macro segfaults on some inputs])
1102 dnl ----------------------------------------------------------------------
1103 dnl These macros are from GNU PSPP, with the following original license:
1104 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1105 dnl This file is free software; the Free Software Foundation
1106 dnl gives unlimited permission to copy and/or distribute it,
1107 dnl with or without modifications, as long as this notice is preserved.
1109 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1110 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1111 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1112 [ovs_save_CFLAGS="$CFLAGS"
1113 dnl Include -Werror in the compiler options, because without -Werror
1114 dnl clang's GCC-compatible compiler driver does not return a failure
1115 dnl exit status even though it complains about options it does not
1118 dnl Also, check stderr as gcc exits with status 0 for options
1119 dnl rejected at getopt level.
1120 dnl % touch /tmp/a.c
1121 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1122 dnl gcc: unrecognized option '-Qunused-arguments'
1126 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1127 dnl it does not understand, unless it has another error to report, so
1128 dnl instead of testing for -Wno-<foo>, test for the positive version.
1129 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1131 [AC_LANG_SOURCE([int x;])],
1132 [if test -s conftest.err && grep "unrecognized option" conftest.err
1139 CFLAGS="$ovs_save_CFLAGS"])
1140 if test $ovs_cv_name = yes; then
1141 m4_if([$2], [], [:], [$2])
1143 m4_if([$3], [], [:], [$3])
1147 dnl OVS_CHECK_WERROR
1149 dnl Check whether the C compiler accepts -Werror.
1150 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1151 AC_DEFUN([OVS_CHECK_WERROR],
1153 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1155 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1156 dnl Check whether the given C compiler OPTION is accepted.
1157 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1158 AC_DEFUN([OVS_CHECK_CC_OPTION],
1159 [AC_REQUIRE([OVS_CHECK_WERROR])
1160 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1162 dnl OVS_ENABLE_OPTION([OPTION])
1163 dnl Check whether the given C compiler OPTION is accepted.
1164 dnl If so, add it to WARNING_FLAGS.
1165 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1166 AC_DEFUN([OVS_ENABLE_OPTION],
1167 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1168 AC_SUBST([WARNING_FLAGS])])
1170 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1171 dnl Check whether the given C compiler OPTION is accepted.
1172 dnl If so, enable the given Automake CONDITIONAL.
1174 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1175 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1176 [OVS_CHECK_CC_OPTION(
1177 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1178 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1179 dnl ----------------------------------------------------------------------
1181 dnl Check for too-old XenServer.
1182 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1183 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1184 [if test -e /etc/redhat-release; then
1185 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1187 if test -z "$ovs_cv_xsversion"; then
1188 ovs_cv_xsversion=none
1190 case $ovs_cv_xsversion in
1194 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1195 [[6-9]]* | dnl XenServer 6 or later
1196 5.[[7-9]]* | dnl XenServer 5.7 or later
1197 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1198 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1199 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1203 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1207 dnl OVS_CHECK_SPARSE_TARGET
1209 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1210 dnl target for which the code is being built. This helps it out.
1211 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1213 [target hint for cgcc],
1214 [ac_cv_sparse_target],
1215 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1216 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1217 [x86_64-*], [ac_cv_sparse_target=x86_64],
1218 [ac_cv_sparse_target=other])])
1219 AS_CASE([$ac_cv_sparse_target],
1220 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1221 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1222 [SPARSEFLAGS= CGCCFLAGS=])
1224 dnl Get the default defines for vector instructions from compiler to
1225 dnl allow "sparse" correctly check the same code that will be built.
1226 dnl Required for checking DPDK headers.
1227 AC_MSG_CHECKING([vector options for cgcc])
1228 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1229 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1230 AC_MSG_RESULT([$VECTOR])
1231 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1233 AC_SUBST([SPARSEFLAGS])
1234 AC_SUBST([CGCCFLAGS])])
1236 dnl OVS_SPARSE_EXTRA_INCLUDES
1238 dnl The cgcc script from "sparse" does not search gcc's default
1239 dnl search path. Get the default search path from GCC and pass
1241 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1242 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1243 [`$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 ' ' `] ))
1245 dnl OVS_ENABLE_SPARSE
1246 AC_DEFUN([OVS_ENABLE_SPARSE],
1247 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1248 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1251 AC_CONFIG_COMMANDS_PRE(
1252 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1256 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1257 [], [enable_sparse=no])
1258 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1260 dnl OVS_CTAGS_IDENTIFIERS
1262 dnl ctags ignores symbols with extras identifiers. This builds a list of
1263 dnl specially handled identifiers to be ignored.
1264 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1265 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1266 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
1268 dnl OVS_PTHREAD_SET_NAME
1270 dnl This checks for three known variants of pthreads functions for setting
1271 dnl the name of the current thread:
1273 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1274 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1275 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1277 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1278 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1281 dnl This macro defines:
1283 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1284 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1285 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1286 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1287 [AC_CHECK_FUNCS([pthread_set_name_np])
1288 if test $ac_cv_func_pthread_set_name_np != yes; then
1290 [for pthread_setname_np() variant],
1291 [ovs_cv_pthread_setname_np],
1293 [AC_LANG_PROGRAM([#include <pthread.h>
1294 ], [pthread_setname_np(pthread_self(), "name");])],
1295 [ovs_cv_pthread_setname_np=glibc],
1297 [AC_LANG_PROGRAM([#include <pthread.h>
1298 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1299 [ovs_cv_pthread_setname_np=netbsd],
1300 [ovs_cv_pthread_setname_np=none])])])
1301 case $ovs_cv_pthread_setname_np in # (
1304 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1305 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1309 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1310 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1315 dnl OVS_CHECK_LINUX_HOST.
1317 dnl Checks whether we're building for a Linux host, based on the presence of
1318 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1319 dnl LINUX based on the result.
1320 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1322 [whether __linux__ is defined],
1325 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1326 [ovs_cv_linux=true],
1327 [ovs_cv_linux=false])])
1328 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])