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netdev-linux: Fix broken build on Ubuntu 14.04
[mirror_ovs.git] / acinclude.m4
CommitLineData
064af421
BP		 1# -*- autoconf -*-
2
0cdd5b13 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 Nicira, Inc.
064af421 4#
a14bc59f
BP		 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:
064af421 8#
a14bc59f
BP		 9# http://www.apache.org/licenses/LICENSE-2.0
10#
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.
064af421 16
a64e37a1
BP		 17dnl OVS_ENABLE_WERROR
18AC_DEFUN([OVS_ENABLE_WERROR],
19 [AC_ARG_ENABLE(
20 [Werror],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
95626395 25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
308bf988
BP		 26 fi])
27
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
df265086
BP		 35 AC_SUBST([FLAKE8_WERROR])
36
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
40 else
41 SPARSE_WERROR=
42 fi
43 AC_SUBST([SPARSE_WERROR])])
a64e37a1 44
e3438006 45dnl OVS_CHECK_LINUX
064af421 46dnl
997d327d 47dnl Configure linux kernel source tree
e3438006 48AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 49 AC_ARG_WITH([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
a0903134
YT		 55 (usually figured out automatically from build
56 directory)])])
8a2d6596
BP		 57
58 # Deprecated equivalents to --with-linux, --with-linux-source.
59 AC_ARG_WITH([l26])
60 AC_ARG_WITH([l26-source])
61
62 if test X"$with_linux" != X; then
63 KBUILD=$with_linux
64 elif test X"$with_l26" != X; then
65 KBUILD=$with_l26
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
67 else
68 KBUILD=
69 fi
70
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
75 KSRC=$with_l26_source
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 77 else
78 KSRC=
8a2d6596
BP		 79 fi
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
82 fi
83
e3438006
BP		 84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
86 case $KBUILD in
0b6d72fc 87 /*) ;;
e3438006 88 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 89 esac
064af421 90
7c9e113b
BP		 91 # The build directory is what the user provided.
92 # Make sure that it exists.
8a2d6596 93 AC_MSG_CHECKING([for Linux build directory])
e3438006 94 if test -d "$KBUILD"; then
a0903134
YT		 95 AC_MSG_RESULT([$KBUILD])
96 AC_SUBST(KBUILD)
064af421 97 else
a0903134
YT		 98 AC_MSG_RESULT([no])
99 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 100 fi
101
7c9e113b 102 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 103 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 104 # Use heuristics to find the source headers.
8a2d6596 105 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
108 case $KSRC in
f5fb5de6 109 /*) ;;
e3438006 110 *) KSRC=`pwd`/$KSRC ;;
b57f675c 111 esac
e3438006 112 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 114 fi
115 else
e3438006
BP		 116 KSRC=$KBUILD
117 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 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 # (
125 */build)
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
127 ;; # (
128 *)
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
130 ;;
131 esac
132 fi
f5fb5de6 133 fi
fe0731b1 134 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 136 fi
137 fi
e3438006 138 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 139
140 AC_MSG_CHECKING([for kernel version])
71fe9970 141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 144 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 145 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
148 else
149 kversion=$version.$patchlevel.$sublevel
7c9e113b 150 fi
71fe9970
BP		 151 AC_MSG_RESULT([$kversion])
152
2adada0e 153 if test "$version" -ge 5; then
ea58abe5 154 if test "$version" = 5 && test "$patchlevel" -le 5; then
2adada0e 155 : # Linux 5.x
d76aabea 156 else
ea58abe5 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.5.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
2adada0e
YS		 159 elif test "$version" = 4; then
160 : # Linux 4.x
8063e095 161 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 162 : # Linux 3.x
71fe9970 163 else
8063e095 164 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 165 fi
2520f452
IY		 166 if (test ! -e "$KBUILD"/include/linux/version.h && \
167 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 168 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
169 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 170 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 171 fi
e3438006 172 OVS_CHECK_LINUX_COMPAT
064af421 173 fi
e3438006 174 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 175])
176
292d5bd9
VB		 177dnl OVS_CHECK_LINUX_NETLINK
178dnl
179dnl Configure Linux netlink compat.
180AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [
181 AC_COMPILE_IFELSE([
182 AC_LANG_PROGRAM([#include <linux/netlink.h>], [
183 struct nla_bitfield32 x = { 0 };
184 ])],
185 [AC_DEFINE([HAVE_NLA_BITFIELD32], [1],
186 [Define to 1 if struct nla_bitfield32 is available.])])
187])
188
1dc0da67
PB		 189dnl OVS_CHECK_LINUX_TC
190dnl
191dnl Configure Linux tc compat.
192AC_DEFUN([OVS_CHECK_LINUX_TC], [
193 AC_COMPILE_IFELSE([
194 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
292d5bd9 195 int x = TCA_ACT_FLAGS;
1dc0da67 196 ])],
292d5bd9
VB		 197 [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1],
198 [Define to 1 if TCA_ACT_FLAGS is available.])])
1dc0da67 199
c0a1df2e
RD		 200 AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>])
201
1dc0da67
PB		 202 AC_COMPILE_IFELSE([
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
204 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
205 ])],
206 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 207 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67 208
abef7959
JH		 209 AC_COMPILE_IFELSE([
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
211 int x = TCA_MPLS_TTL;
212 ])],
213 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
214 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
215
1dc0da67
PB		 216 AC_COMPILE_IFELSE([
217 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 218 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 219 ])],
4b12e454
OG		 220 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
221 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 222
223 AC_COMPILE_IFELSE([
224 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
225 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
226 ])],
227 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 228 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH		 229
230 AC_COMPILE_IFELSE([
231 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
232 int x = TCA_SKBEDIT_FLAGS;
233 ])],
234 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
235 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB		 236])
237
8c7130da
AC		 238dnl OVS_CHECK_LINUX_SCTP_CT
239dnl
240dnl Checks for kernels which need additional SCTP state
241AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
242 AC_COMPILE_IFELSE([
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;
248 ])],
249 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
250 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
251])
252
fd4d4777
YHW		 253dnl OVS_CHECK_LINUX_VIRTIO_TYPES
254dnl
255dnl Checks for kernels that need virtio_types definition.
256AC_DEFUN([OVS_CHECK_LINUX_VIRTIO_TYPES], [
257 AC_COMPILE_IFELSE([
258 AC_LANG_PROGRAM([#include <linux/virtio_types.h>], [
259 __virtio16 x = 0;
260 ])],
261 [AC_DEFINE([HAVE_VIRTIO_TYPES], [1],
262 [Define to 1 if __virtio16 is available.])])
263])
264
f0d1ead8
IM		 265dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
266dnl
267dnl Check for a function in a library list.
268AC_DEFUN([OVS_FIND_DEPENDENCY], [
269 AC_SEARCH_LIBS([$1], [$2], [], [
270 AC_MSG_ERROR([unable to find $3, install the dependency package])
271 ])
272])
273
0de1b425
WT		 274dnl OVS_CHECK_LINUX_AF_XDP
275dnl
276dnl Check both Linux kernel AF_XDP and libbpf support
277AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
278 AC_ARG_ENABLE([afxdp],
279 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
280 [], [enable_afxdp=no])
281 AC_MSG_CHECKING([whether AF_XDP is enabled])
282 if test "$enable_afxdp" != yes; then
283 AC_MSG_RESULT([no])
284 AF_XDP_ENABLE=false
285 else
286 AC_MSG_RESULT([yes])
287 AF_XDP_ENABLE=true
288
289 AC_CHECK_HEADER([bpf/libbpf.h], [],
290 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
291
292 AC_CHECK_HEADER([linux/if_xdp.h], [],
293 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
294
295 AC_CHECK_HEADER([bpf/xsk.h], [],
296 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
297
298 AC_CHECK_FUNCS([pthread_spin_lock], [],
299 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
300
e8568993
YHW		 301 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
302
0de1b425
WT		 303 AC_DEFINE([HAVE_AF_XDP], [1],
304 [Define to 1 if AF_XDP support is available and enabled.])
305 LIBBPF_LDADD=" -lbpf -lelf"
306 AC_SUBST([LIBBPF_LDADD])
e50547b5
WT		 307
308 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
309 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
310 [XDP need wakeup support detected in xsk.h.])
311 ], [], [[#include <bpf/xsk.h>]])
0de1b425
WT		 312 fi
313 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
314])
315
8a9562d2
PS		 316dnl OVS_CHECK_DPDK
317dnl
318dnl Configure DPDK source tree
319AC_DEFUN([OVS_CHECK_DPDK], [
320 AC_ARG_WITH([dpdk],
321 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 322 [Specify the DPDK build directory])],
323 [have_dpdk=true])
8a9562d2 324
49df3c0f 325 AC_MSG_CHECKING([whether dpdk is enabled])
4c16ee48 326 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 327 AC_MSG_RESULT([no])
328 DPDKLIB_FOUND=false
329 else
330 AC_MSG_RESULT([yes])
331 case "$with_dpdk" in
332 yes)
333 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 334 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
335 DPDK_INCLUDE="$DPDK_CFLAGS"
336 DPDK_LIB="$DPDK_LIBS"], [
337 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
338 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 339 ;;
340 *)
341 DPDK_AUTO_DISCOVER="false"
96195c09 342 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 343 # If 'with_dpdk' is passed install directory, point to headers
344 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 345 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
346 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
347 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
348 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 349 fi
40b5ea86 350 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 351 DPDK_LIB="-ldpdk"
40b5ea86
BB		 352 ;;
353 esac
8a9562d2 354
95626395
TG		 355 ovs_save_CFLAGS="$CFLAGS"
356 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 357 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 358 if test "$DPDK_AUTO_DISCOVER" = "false"; then
359 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
360 fi
361
865cee2b
IM		 362 AC_CHECK_HEADERS([rte_config.h], [], [
363 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
364 ], [AC_INCLUDES_DEFAULT])
365
f0d1ead8
IM		 366 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
367 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
368 ], [], [[#include <rte_config.h>]])
4b88d678 369
976c452a
CL		 370 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
371 OVS_FIND_DEPENDENCY([pcap_dump_close], [pcap], [libpcap])
372 ], [], [[#include <rte_config.h>]])
373
5bb068a7
CL		 374 AC_CHECK_DECL([RTE_LIBRTE_PMD_AF_XDP], [
375 LIBBPF_LDADD="-lbpf"
376 ], [], [[#include <rte_config.h>]])
377
f0d1ead8
IM		 378 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
379 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
380 ], [], [[#include <rte_config.h>]])
fc3b425f 381
f0d1ead8
IM		 382 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
383 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
b926f577 384 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 385 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
386 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
387 ], [[#include <rte_config.h>]])
388 ], [], [[#include <rte_config.h>]])
84844e3f 389
f0d1ead8 390 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
b926f577 391 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 392 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
393 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
394 ], [[#include <rte_config.h>]])
395 ], [], [[#include <rte_config.h>]])
939bad9a 396
e2f37511
IM		 397 # DPDK uses dlopen to load plugins.
398 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
399
400 AC_MSG_CHECKING([whether linking with dpdk works])
401 LIBS="$DPDK_LIB $LIBS"
402 AC_LINK_IFELSE(
403 [AC_LANG_PROGRAM([#include <rte_config.h>
404 #include <rte_eal.h>],
405 [int rte_argc; char ** rte_argv;
406 rte_eal_init(rte_argc, rte_argv);])],
407 [AC_MSG_RESULT([yes])
408 DPDKLIB_FOUND=true],
409 [AC_MSG_RESULT([no])
410 if test "$DPDK_AUTO_DISCOVER" = "true"; then
411 AC_MSG_ERROR(m4_normalize([
412 Could not find DPDK library in default search path, Use --with-dpdk
413 to specify the DPDK library installed in non-standard location]))
414 else
415 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
416 fi
417 ])
c1223b11 418
95626395
TG		 419 CFLAGS="$ovs_save_CFLAGS"
420 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 421 if test "$DPDK_AUTO_DISCOVER" = "false"; then
422 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
423 fi
96195c09 424 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 425 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 426
3c94676c 427 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 428 #
429 # This happens because the rest of the DPDK code doesn't use any symbol in
430 # the pmd driver objects, and the drivers register themselves using an
431 # __attribute__((constructor)) function.
432 #
433 # These options are specified inside a single -Wl directive to prevent
434 # autotools from reordering them.
5b5aa2d8
CE		 435 #
436 # OTOH newer versions of dpdk pkg-config (generated with Meson)
437 # will already have flagged just the right set of libs with
438 # --whole-archive - in those cases do not wrap it once more.
439 case "$DPDK_LIB" in
440 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
441 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
442 esac
9475dfeb 443 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 444 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 445 fi
446
40b5ea86 447 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 448])
449
8828e5c7 450dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 451dnl
452dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 453dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
454dnl <REGEX> translated to uppercase.
064af421
BP		 455AC_DEFUN([OVS_GREP_IFELSE], [
456 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 457 if test -f $1; then
458 grep '$2' $1 >/dev/null 2>&1
459 status=$?
460 case $status in
997d327d 461 0)
7507ec48 462 AC_MSG_RESULT([yes])
8828e5c7 463 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 464 ;;
997d327d 465 1)
7507ec48
JG		 466 AC_MSG_RESULT([no])
467 $4
468 ;;
997d327d 469 *)
7507ec48
JG		 470 AC_MSG_ERROR([grep exited with status $status])
471 ;;
472 esac
473 else
474 AC_MSG_RESULT([file not found])
475 $4
476 fi
064af421
BP		 477])
478
13dd4a97
JS		 479dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
480dnl
481dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
482dnl structure definition. If this is successful, runs IF-MATCH, otherwise
483dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
484dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
485dnl translated to uppercase.
486AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
487 AC_MSG_CHECKING([whether $2 has member $3 in $1])
488 if test -f $1; then
83a27884 489 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 490 status=$?
491 case $status in
492 0)
493 AC_MSG_RESULT([yes])
494 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
495 ;;
496 1)
497 AC_MSG_RESULT([no])
498 $5
499 ;;
500 *)
501 AC_MSG_ERROR([grep exited with status $status])
502 ;;
503 esac
504 else
505 AC_MSG_RESULT([file not found])
506 $5
507 fi
508])
509
71ce9edd
JR		 510dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
511dnl
512dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
513dnl the function signature starting from the line matching FUNCTION
514dnl and ending with the line containing the closing parenthesis. If
515dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
516dnl IF-MATCH is empty then it defines to
517dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
518dnl <REGEX> translated to uppercase.
519AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
520 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
521 if test -f $1; then
522 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
523 status=$?
524 case $status in
525 0)
526 AC_MSG_RESULT([yes])
527 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
528 ;;
529 1)
530 AC_MSG_RESULT([no])
531 $5
532 ;;
533 *)
534 AC_MSG_ERROR([grep exited with status $status])
535 ;;
536 esac
537 else
538 AC_MSG_RESULT([file not found])
539 $5
540 fi
541])
542
82b7e6d1
GR		 543dnl OVS_FIND_OP_PARAM_IFELSE(FILE, OP, REGEX, [IF-MATCH], [IF-NO-MATCH])
544dnl
545dnl Looks for OP in FILE. If it is found, greps for REGEX within the
546dnl OP definition. If this is successful, runs IF-MATCH, otherwise
547dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
548dnl OVS_DEFINE(HAVE_<OP>_WITH_<REGEX>), with <OP> and <REGEX>
549dnl translated to uppercase.
550AC_DEFUN([OVS_FIND_OP_PARAM_IFELSE], [
551 AC_MSG_CHECKING([whether $2 has member $3 in $1])
552 if test -f $1; then
553 awk '/$2[[ \t\n]]*\)\(/,/;/' $1 2>/dev/null | grep '$3' >/dev/null
554 status=$?
555 case $status in
556 0)
557 AC_MSG_RESULT([yes])
558 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
559 ;;
560 1)
561 AC_MSG_RESULT([no])
562 $5
563 ;;
564 *)
565 AC_MSG_ERROR([grep exited with status $status])
566 ;;
567 esac
568 else
569 AC_MSG_RESULT([file not found])
570 $5
571 fi
572])
573
064af421
BP		 574dnl OVS_DEFINE(NAME)
575dnl
576dnl Defines NAME to 1 in kcompat.h.
577AC_DEFUN([OVS_DEFINE], [
22bcc0e7 578 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 579])
580
e3438006 581dnl OVS_CHECK_LINUX_COMPAT
064af421 582dnl
8063e095 583dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 584dnl the directory in $KBUILD.
585AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 586 rm -f datapath/linux/kcompat.h.new
587 mkdir -p datapath/linux
588 : > datapath/linux/kcompat.h.new
4aa13c0c 589
e23775f2
PS		 590 echo '#include <linux/version.h>
591#ifndef RHEL_RELEASE_CODE
592#define RHEL_RELEASE_CODE 0
593#define RHEL_RELEASE_VERSION(a, b) 0
594#endif' >> datapath/linux/kcompat.h.new
595
e3438006 596 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 597 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
598
db1dcb23
DB		 599 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
600 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
601
33f9c873
GR		 602 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub],
603 [dst_entry])
e23775f2
PS		 604 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
605 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
5519e384
YHW		 606 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow.*net],
607 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_FLOW_NET])])
e23775f2 608 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
5519e384 609 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow])
e23775f2 610
e3438006 611 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 612 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 613 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 614
8aef057b 615 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 616 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 617 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
618 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 619
d923a695 620 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 621 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 622
e23775f2
PS		 623 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
624 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
625 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 626 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 627 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 628 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 629
e3438006 630 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 631 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 632 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
633 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 634 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
635 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
636
13dd4a97
JS		 637 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
638 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 639 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
640 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 641 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
642 [ip_do_fragment], [net],
643 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 644 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
645 [ip_local_out], [net],
646 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
647
cfda4537 648 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 649
650 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
651 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 652 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 653 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
654 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 655 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
656 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 657 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 658 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 659 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
660 [frags_work])
d1c390e6
JS		 661 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
662 [rwlock])
e0d45da3
JS		 663 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
664 [list_evictor])
38f45380 665 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 666 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
667 [sub_frag_mem_limit], [struct.netns_frags],
668 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
669 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
670 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 671 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
672 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 673
f2252c61
PS		 674 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
675 dnl OVS does not really need ipv6 label field, but its presence signifies that
676 dnl the stack has all required ipv6 support.
677 dnl OVS also does not need dst_cache But this dependency allows us to write
678 dnl much cleaner code.
679
3259c4ff
PS		 680 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
681 [label],
682 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
683 [iptunnel_pull_offloads],
997d327d 684 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 685 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
686 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 687
138df3e5
GR		 688 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
689 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 690 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
691 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 692 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
693 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 694 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 695 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
696 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
697 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 698 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 699 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 700 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 701 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 702 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 703 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
704 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 705 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
706 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 707 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 708 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 709 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
710 dnl So check type of tstats.
711 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
712 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 713 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
714 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 715 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 716 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
717 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
718 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
719 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 720 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 721 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
722 [extended])
7efb1e09
PS		 723 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
724 [netdev_master_upper_dev_link], [upper_priv],
725 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 726 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
727 [netdev_master_upper_dev_link_rh],
728 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
729
6c0bf091
JW		 730 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
731 [max_mtu])
39ca3383
YHW		 732 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
733 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 734 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
735 [dev_change_flags], [extack],
736 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 737
738 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 739 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
740 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 741 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 742 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
743 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 744 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
745 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
746 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
747 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 748 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 749 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 750
0643a78b 751
e4e04c3b 752 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 753 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 754
6d9b6937
JR		 755 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
756 [nf_conn], [struct timer_list[[ \t]]*timeout],
757 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
758 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
759 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
760
71ce9edd
JR		 761 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
762 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 763 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 764 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
765 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 766 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 767 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
768 [nf_ct_set])
56ec5593
JS		 769 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
770 [nf_ct_is_untracked])
c1d728db
YHW		 771 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
772 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 773 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
774 [nf_ct_zone_init])
eca4cde0
YS		 775 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
776 [net_ns_get])
459064e7
JS		 777 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
778 [nf_connlabels_get])
7f2ab8cd
JR		 779 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
780 [nf_connlabels_get], [int bit],
781 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 782 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
783 [nf_conn_labels], [words])
0d330e42
JR		 784 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
785 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 786 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 787 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
788 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 789 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 790 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 791 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
792 [int nf_conncount_add],
793 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 794 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
795 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
796 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
797 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
798 [\(*nf_ct_timeout_find_get_hook\)], [net],
799 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 800
9048ab60
GR		 801 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
802 [prandom_u32[[\(]]],
803 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 804 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 805
e23775f2
PS		 806 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
807 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
808 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
809 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
810 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
811
e3438006
BP		 812 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
813 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 814 [rcu_read_lock_held])])
8fa52250 815 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 816 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 817 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
818 [rtnl_create_link], [extack],
819 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 820 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 821
6a33828d
BP		 822 # Check for the proto_data_valid member in struct sk_buff. The [^@]
823 # is necessary because some versions of this header remove the
824 # member but retain the kerneldoc comment that describes it (which
825 # starts with @). The brackets must be doubled because of m4
826 # quoting rules.
e3438006 827 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 828 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 829 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 830 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 831 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 832 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 833 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 834 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 835 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
836 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 837 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 838 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 839 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 840 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 841 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
842 [skb_reset_tail_pointer])
e3438006 843 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 844 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 845 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 846 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 847 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 848 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 849 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 850 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 851 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 853 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
854 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 855 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 856 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
857 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 858 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
859 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 860 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 861 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 862 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 864 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 865 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 866 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 867 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 868 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 869
e3438006 870 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 871 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 872 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
873 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 874
e3438006
BP		 875 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
876 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 877
0d03e51c 878 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 879 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 880
114fce23
SG		 881 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
882 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 883 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 884 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
885 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 886 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 887 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
888 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
f1e9590e 889 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
0643a78b
PS		 890 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
891 [genl_notify], [net],
892 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
893
13dd4a97
JS		 894
895 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
896 [genl_multicast_group], [id])
fdce83a3 897 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 898
cc1d0dea 899 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 900 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 901 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 902 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 903 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 904 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
905 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 906 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
907 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
908
91b37647 909 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 910 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 911 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
912 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
913 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 914 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 915 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 916 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
09c33996 917 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
6dbd98e6
SH		 918 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
919 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 920 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
921 [nla_parse], [netlink_ext_ack],
922 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 923
c4e976db
JG		 924 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
925
1f649f1c 926 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 927 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 928 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 929 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 930 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 931
aadd6ae9
JS		 932 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
933 [metadata_dst_alloc], [metadata_type])
934
09f27436
JG		 935 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
936
3174a818
TG		 937 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
938 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 939 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 940 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
941 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
942 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 943 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 944 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
945 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 946 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
947 [gro_receive])
e23775f2
PS		 948
949 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 950 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
951 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
952 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 953
b7ebebcd
PS		 954 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
955 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 956 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
957 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 958 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
959 [udp_add_offload], [net],
960 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 961 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
962 [nf_defrag_ipv6_enable], [net],
963 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 964 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
965 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 966 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
967 [needs_free_netdev],
968 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 969 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
970 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 971 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 972 [nf_conntrack_helper_put],
973 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
4c941202
YHW		 974 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
975 [nf_nat_helper_try_module_get])
976 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
977 [nf_nat_helper_put])
f90e29c9 978 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 979 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 980 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
981 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 982 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
983 [extack],
984 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 985 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
986 [list],
987 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 988 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
989 [IP_CT_UNTRACKED])
36d3520b
GR		 990 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
991 [netdev_master_upper_dev_link], [extack],
992 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 993 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
994 [__LINUX_COMPILER_TYPES_H],
995 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 996 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
997 [ktime_get_ts64],
998 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 999 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
1000 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
1001 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 1002 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1003 [ktime_get_ns],
1004 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 1005 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
1006 frag_percpu_counter_batch[],
1007 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 1008 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1009 [null_compute_pseudo],
1010 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
1011 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1012 [__skb_checksum_convert],
1013 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
1014 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
1015 [max_mtu],
1016 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 1017 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
1018 [erspan_ver],
1019 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
1020 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1021 [SKB_GSO_IPXIP6],
1022 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
1023 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
1024 [ip6_make_flowlabel], [fl6],
1025 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1026 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1027 [auto_flowlabels],
1028 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1029 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1030 [netif_keep_dst],
1031 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1032 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1033 [ndo_get_iflink],
1034 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1035 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1036 [skb_set_inner_ipproto],
1037 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1038 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1039 [tunnel_encap_types],
1040 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1041 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1042 [IFLA_IPTUN_ENCAP_TYPE],
1043 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1044 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1045 [IFLA_IPTUN_COLLECT_METADATA],
1046 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 1047 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1048 [IFLA_GRE_ENCAP_DPORT])
1049 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1050 [IFLA_GRE_COLLECT_METADATA])
1051 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1052 [IFLA_GRE_IGNORE_DF])
1053 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1054 [IFLA_GRE_FWMARK])
1055 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1056 [IFLA_GRE_ERSPAN_INDEX])
1057 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1058 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 1059 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1060 [IFLA_IPTUN_FWMARK])
10f24236
GR		 1061 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1062 [csum_valid],
1063 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 1064 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1065 [vlan_present],
1066 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 1067 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1068 [skb_checksum_simple_validate])
44a629b5
GR		 1069 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1070 [void.*ndo_get_stats64],
1071 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 1072 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1073 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1074 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1075 [ip_tunnel_info_opts_set], [flags],
1076 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1077 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1078 [rnd],
1079 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1080 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1081 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1082 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1083 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1084 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1085 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1086 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1087 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1088 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1089 [nf_conntrack_l3proto],
1090 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1091 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1092 [nf_conntrack_in], [nf_hook_state],
1093 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1094 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1095 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1096 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1097 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1098 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1099 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1100 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1101 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1102 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1103 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1104 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
6634cc8a
GR		 1105 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1106 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
f77d85b1
GR		 1107 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1108 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
2ef0f1c2
JB		 1109 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1110 [policy],
1111 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
6db0f72d
JB		 1112 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1113 [nla_parse_deprecated_strict],
1114 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
82b7e6d1
GR		 1115 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1116 [validate], [extack],
1117 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
9ba57fc7
HZ		 1118 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1119 [__skb_set_hash])
1120 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [sw_hash])
1121 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash_raw])
21a719d6 1122
22bcc0e7
JG		 1123 if cmp -s datapath/linux/kcompat.h.new \
1124 datapath/linux/kcompat.h >/dev/null 2>&1; then
1125 rm datapath/linux/kcompat.h.new
064af421 1126 else
22bcc0e7 1127 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1128 fi
1129])
1130
f6eb6b20 1131dnl Checks for net/if_dl.h.
d30e714c 1132dnl
d23fa2ed
YT		 1133dnl (We use this as a proxy for checking whether we're building on FreeBSD
1134dnl or NetBSD.)
9360d9b7
EM		 1135AC_DEFUN([OVS_CHECK_IF_DL],
1136 [AC_CHECK_HEADER([net/if_dl.h],
1137 [HAVE_IF_DL=yes],
1138 [HAVE_IF_DL=no])
1139 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1140 if test "$HAVE_IF_DL" = yes; then
1141 AC_DEFINE([HAVE_IF_DL], [1],
1142 [Define to 1 if net/if_dl.h is available.])
d30e714c 1143
d23fa2ed 1144 # On these platforms we use libpcap to access network devices.
d30e714c 1145 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1146 fi])
1147
e50097d2
BP		 1148dnl Checks for buggy strtok_r.
1149dnl
1150dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1151dnl with optimization that can cause segfaults:
1152dnl
1153dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1154AC_DEFUN([OVS_CHECK_STRTOK_R],
1155 [AC_CACHE_CHECK(
1156 [whether strtok_r macro segfaults on some inputs],
1157 [ovs_cv_strtok_r_bug],
1158 [AC_RUN_IFELSE(
1159 [AC_LANG_PROGRAM([#include <stdio.h>
1160 #include <string.h>
1161 ],
416e7132
BP		 1162 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1163 /* Assume bug is present, because relatively minor
1164 changes in compiler settings (e.g. optimization
1165 level) can make it crop up. */
1166 return 1;
1167 #else
1168 char string[] = ":::";
e50097d2
BP		 1169 char *save_ptr = (char *) 0xc0ffee;
1170 char *token1, *token2;
1171 token1 = strtok_r(string, ":", &save_ptr);
1172 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1173 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1174 printf ("%s %s\n", token1, token2);
1175 return 0;
416e7132 1176 #endif
e50097d2
BP		 1177 ]])],
1178 [ovs_cv_strtok_r_bug=no],
1179 [ovs_cv_strtok_r_bug=yes],
1180 [ovs_cv_strtok_r_bug=yes])])
1181 if test $ovs_cv_strtok_r_bug = yes; then
1182 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1183 [Define if strtok_r macro segfaults on some inputs])
1184 fi
1185])
1186
064af421
BP		 1187dnl ----------------------------------------------------------------------
1188dnl These macros are from GNU PSPP, with the following original license:
1189dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1190dnl This file is free software; the Free Software Foundation
1191dnl gives unlimited permission to copy and/or distribute it,
1192dnl with or without modifications, as long as this notice is preserved.
1193
50194820 1194AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1195 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1196 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1197 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1198 dnl Include -Werror in the compiler options, because without -Werror
1199 dnl clang's GCC-compatible compiler driver does not return a failure
1200 dnl exit status even though it complains about options it does not
1201 dnl understand.
c2deac54
YT		 1202 dnl
1203 dnl Also, check stderr as gcc exits with status 0 for options
1204 dnl rejected at getopt level.
1205 dnl % touch /tmp/a.c
1206 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1207 dnl gcc: unrecognized option '-Qunused-arguments'
1208 dnl 0
1209 dnl %
4c1e8cb9
BP		 1210 dnl
1211 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1212 dnl it does not understand, unless it has another error to report, so
1213 dnl instead of testing for -Wno-<foo>, test for the positive version.
1214 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1215 AC_COMPILE_IFELSE(
1216 [AC_LANG_SOURCE([int x;])],
1217 [if test -s conftest.err && grep "unrecognized option" conftest.err
1218 then
1219 ovs_cv_name[]=no
1220 else
1221 ovs_cv_name[]=yes
1222 fi],
1223 [ovs_cv_name[]=no])
064af421
BP		 1224 CFLAGS="$ovs_save_CFLAGS"])
1225 if test $ovs_cv_name = yes; then
83f6c050 1226 m4_if([$2], [], [:], [$2])
064af421
BP		 1227 else
1228 m4_if([$3], [], [:], [$3])
1229 fi
1230])
1231
50194820
BP		 1232dnl OVS_CHECK_WERROR
1233dnl
1234dnl Check whether the C compiler accepts -Werror.
1235dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1236AC_DEFUN([OVS_CHECK_WERROR],
1237 [WERROR=
1238 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1239
1240dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1241dnl Check whether the given C compiler OPTION is accepted.
1242dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1243AC_DEFUN([OVS_CHECK_CC_OPTION],
1244 [AC_REQUIRE([OVS_CHECK_WERROR])
1245 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1246
064af421
BP		 1247dnl OVS_ENABLE_OPTION([OPTION])
1248dnl Check whether the given C compiler OPTION is accepted.
d161c099 1249dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1250dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1251AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1252 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1253 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1254
1255dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1256dnl Check whether the given C compiler OPTION is accepted.
1257dnl If so, enable the given Automake CONDITIONAL.
1258
1259dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1260AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1261 [OVS_CHECK_CC_OPTION(
1262 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1263 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1264dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1265
1266dnl Check for too-old XenServer.
1267AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1268 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1269 [if test -e /etc/redhat-release; then
1270 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1271 fi
1272 if test -z "$ovs_cv_xsversion"; then
1273 ovs_cv_xsversion=none
1274 fi])
1275 case $ovs_cv_xsversion in
1276 none)
1277 ;;
1278
1279 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1280 [[6-9]]* | dnl XenServer 6 or later
1281 5.[[7-9]]* | dnl XenServer 5.7 or later
1282 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1283 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1284 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1285 ;;
1286
1287 *)
1288 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1289 ;;
1290 esac])
29d935d6 1291
643c0c34
BP		 1292dnl OVS_CHECK_SPARSE_TARGET
1293dnl
1294dnl The "cgcc" script from "sparse" isn't very good at detecting the
1295dnl target for which the code is being built. This helps it out.
1296AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1297 [AC_CACHE_CHECK(
1298 [target hint for cgcc],
1299 [ac_cv_sparse_target],
1300 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1301 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1302 [x86_64-*], [ac_cv_sparse_target=x86_64],
1303 [ac_cv_sparse_target=other])])
1304 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1305 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1306 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1307 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1308
e5273084 1309 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1310 dnl allow "sparse" correctly check the same code that will be built.
1311 dnl Required for checking DPDK headers.
1312 AC_MSG_CHECKING([vector options for cgcc])
1313 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1314 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1315 AC_MSG_RESULT([$VECTOR])
1316 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1317
643c0c34
BP		 1318 AC_SUBST([SPARSEFLAGS])
1319 AC_SUBST([CGCCFLAGS])])
1320
32e96ab7
AZ		 1321dnl OVS_SPARSE_EXTRA_INCLUDES
1322dnl
1323dnl The cgcc script from "sparse" does not search gcc's default
1324dnl search path. Get the default search path from GCC and pass
1325dnl them to sparse.
1326AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1327 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1328 [`$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 ' ' `] ))
1329
29d935d6
BP		 1330dnl OVS_ENABLE_SPARSE
1331AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1332 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1333 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1334 : ${SPARSE=sparse}
1335 AC_SUBST([SPARSE])
1336 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1337 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1338
1339 AC_ARG_ENABLE(
1340 [sparse],
1341 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1342 [], [enable_sparse=no])
1343 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1344
0eaaacac
FL		 1345dnl OVS_CTAGS_IDENTIFIERS
1346dnl
9ed9df77
FL		 1347dnl ctags ignores symbols with extras identifiers. This is a list of
1348dnl specially handled identifiers to be ignored. [ctags(1) -I <list>].
0eaaacac
FL		 1349AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1350 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
9ed9df77 1351 ["OVS_LOCKABLE OVS_NO_THREAD_SAFETY_ANALYSIS OVS_REQ_RDLOCK+ OVS_ACQ_RDLOCK+ OVS_REQ_WRLOCK+ OVS_ACQ_WRLOCK+ OVS_REQUIRES+ OVS_ACQUIRES+ OVS_TRY_WRLOCK+ OVS_TRY_RDLOCK+ OVS_TRY_LOCK+ OVS_GUARDED_BY+ OVS_EXCLUDED+ OVS_RELEASES+ OVS_ACQ_BEFORE+ OVS_ACQ_AFTER+"]))
0eaaacac 1352
8a8cd0ac
BP		 1353dnl OVS_PTHREAD_SET_NAME
1354dnl
1355dnl This checks for three known variants of pthreads functions for setting
1356dnl the name of the current thread:
1357dnl
1358dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1359dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1360dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1361dnl
1362dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1363dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1364dnl provide to it.
1365dnl
1366dnl This macro defines:
1367dnl
1368dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1369dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1370dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1371AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1372 [AC_CHECK_FUNCS([pthread_set_name_np])
1373 if test $ac_cv_func_pthread_set_name_np != yes; then
1374 AC_CACHE_CHECK(
1375 [for pthread_setname_np() variant],
1376 [ovs_cv_pthread_setname_np],
1377 [AC_LINK_IFELSE(
a0903134 1378 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1379 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1380 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1381 [AC_LINK_IFELSE(
a0903134 1382 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1383], [pthread_setname_np(pthread_self(), "%s", "name");])],
1384 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1385 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1386 case $ovs_cv_pthread_setname_np in # (
1387 glibc)
a0903134
YT		 1388 AC_DEFINE(
1389 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1390 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1391 ;; # (
8a8cd0ac 1392 netbsd)
a0903134
YT		 1393 AC_DEFINE(
1394 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1395 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1396 ;;
8a8cd0ac
BP		 1397 esac
1398 fi])
5020f5f0
BP		 1399
1400dnl OVS_CHECK_LINUX_HOST.
1401dnl
1402dnl Checks whether we're building for a Linux host, based on the presence of
1403dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1404dnl LINUX based on the result.
1405AC_DEFUN([OVS_CHECK_LINUX_HOST],
1406 [AC_CACHE_CHECK(
1407 [whether __linux__ is defined],
1408 [ovs_cv_linux],
1409 [AC_COMPILE_IFELSE(
1410 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1411 [ovs_cv_linux=true],
1412 [ovs_cv_linux=false])])
1413 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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