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compat: Fix broken partial backport of extack op parameter
[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
f0d1ead8
IM		 253dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
254dnl
255dnl Check for a function in a library list.
256AC_DEFUN([OVS_FIND_DEPENDENCY], [
257 AC_SEARCH_LIBS([$1], [$2], [], [
258 AC_MSG_ERROR([unable to find $3, install the dependency package])
259 ])
260])
261
0de1b425
WT		 262dnl OVS_CHECK_LINUX_AF_XDP
263dnl
264dnl Check both Linux kernel AF_XDP and libbpf support
265AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
266 AC_ARG_ENABLE([afxdp],
267 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
268 [], [enable_afxdp=no])
269 AC_MSG_CHECKING([whether AF_XDP is enabled])
270 if test "$enable_afxdp" != yes; then
271 AC_MSG_RESULT([no])
272 AF_XDP_ENABLE=false
273 else
274 AC_MSG_RESULT([yes])
275 AF_XDP_ENABLE=true
276
277 AC_CHECK_HEADER([bpf/libbpf.h], [],
278 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
279
280 AC_CHECK_HEADER([linux/if_xdp.h], [],
281 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
282
283 AC_CHECK_HEADER([bpf/xsk.h], [],
284 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
285
286 AC_CHECK_FUNCS([pthread_spin_lock], [],
287 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
288
e8568993
YHW		 289 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
290
0de1b425
WT		 291 AC_DEFINE([HAVE_AF_XDP], [1],
292 [Define to 1 if AF_XDP support is available and enabled.])
293 LIBBPF_LDADD=" -lbpf -lelf"
294 AC_SUBST([LIBBPF_LDADD])
e50547b5
WT		 295
296 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
297 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
298 [XDP need wakeup support detected in xsk.h.])
299 ], [], [[#include <bpf/xsk.h>]])
0de1b425
WT		 300 fi
301 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
302])
303
8a9562d2
PS		 304dnl OVS_CHECK_DPDK
305dnl
306dnl Configure DPDK source tree
307AC_DEFUN([OVS_CHECK_DPDK], [
308 AC_ARG_WITH([dpdk],
309 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 310 [Specify the DPDK build directory])],
311 [have_dpdk=true])
8a9562d2 312
49df3c0f 313 AC_MSG_CHECKING([whether dpdk is enabled])
4c16ee48 314 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 315 AC_MSG_RESULT([no])
316 DPDKLIB_FOUND=false
317 else
318 AC_MSG_RESULT([yes])
319 case "$with_dpdk" in
320 yes)
321 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 322 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
323 DPDK_INCLUDE="$DPDK_CFLAGS"
324 DPDK_LIB="$DPDK_LIBS"], [
325 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
326 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 327 ;;
328 *)
329 DPDK_AUTO_DISCOVER="false"
96195c09 330 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 331 # If 'with_dpdk' is passed install directory, point to headers
332 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 333 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
334 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
335 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
336 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 337 fi
40b5ea86 338 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 339 DPDK_LIB="-ldpdk"
40b5ea86
BB		 340 ;;
341 esac
8a9562d2 342
95626395
TG		 343 ovs_save_CFLAGS="$CFLAGS"
344 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 345 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 346 if test "$DPDK_AUTO_DISCOVER" = "false"; then
347 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
348 fi
349
865cee2b
IM		 350 AC_CHECK_HEADERS([rte_config.h], [], [
351 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
352 ], [AC_INCLUDES_DEFAULT])
353
f0d1ead8
IM		 354 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
355 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
356 ], [], [[#include <rte_config.h>]])
4b88d678 357
f0d1ead8
IM		 358 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
359 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
360 ], [], [[#include <rte_config.h>]])
fc3b425f 361
f0d1ead8
IM		 362 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
363 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
b926f577 364 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 365 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
366 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
367 ], [[#include <rte_config.h>]])
368 ], [], [[#include <rte_config.h>]])
84844e3f 369
f0d1ead8 370 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
b926f577 371 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 372 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
373 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
374 ], [[#include <rte_config.h>]])
375 ], [], [[#include <rte_config.h>]])
939bad9a 376
e2f37511
IM		 377 # DPDK uses dlopen to load plugins.
378 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
379
380 AC_MSG_CHECKING([whether linking with dpdk works])
381 LIBS="$DPDK_LIB $LIBS"
382 AC_LINK_IFELSE(
383 [AC_LANG_PROGRAM([#include <rte_config.h>
384 #include <rte_eal.h>],
385 [int rte_argc; char ** rte_argv;
386 rte_eal_init(rte_argc, rte_argv);])],
387 [AC_MSG_RESULT([yes])
388 DPDKLIB_FOUND=true],
389 [AC_MSG_RESULT([no])
390 if test "$DPDK_AUTO_DISCOVER" = "true"; then
391 AC_MSG_ERROR(m4_normalize([
392 Could not find DPDK library in default search path, Use --with-dpdk
393 to specify the DPDK library installed in non-standard location]))
394 else
395 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
396 fi
397 ])
c1223b11 398
95626395
TG		 399 CFLAGS="$ovs_save_CFLAGS"
400 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 401 if test "$DPDK_AUTO_DISCOVER" = "false"; then
402 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
403 fi
96195c09 404 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 405 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 406
3c94676c 407 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 408 #
409 # This happens because the rest of the DPDK code doesn't use any symbol in
410 # the pmd driver objects, and the drivers register themselves using an
411 # __attribute__((constructor)) function.
412 #
413 # These options are specified inside a single -Wl directive to prevent
414 # autotools from reordering them.
5b5aa2d8
CE		 415 #
416 # OTOH newer versions of dpdk pkg-config (generated with Meson)
417 # will already have flagged just the right set of libs with
418 # --whole-archive - in those cases do not wrap it once more.
419 case "$DPDK_LIB" in
420 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
421 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
422 esac
9475dfeb 423 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 424 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 425 fi
426
40b5ea86 427 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 428])
429
8828e5c7 430dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 431dnl
432dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 433dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
434dnl <REGEX> translated to uppercase.
064af421
BP		 435AC_DEFUN([OVS_GREP_IFELSE], [
436 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 437 if test -f $1; then
438 grep '$2' $1 >/dev/null 2>&1
439 status=$?
440 case $status in
997d327d 441 0)
7507ec48 442 AC_MSG_RESULT([yes])
8828e5c7 443 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 444 ;;
997d327d 445 1)
7507ec48
JG		 446 AC_MSG_RESULT([no])
447 $4
448 ;;
997d327d 449 *)
7507ec48
JG		 450 AC_MSG_ERROR([grep exited with status $status])
451 ;;
452 esac
453 else
454 AC_MSG_RESULT([file not found])
455 $4
456 fi
064af421
BP		 457])
458
13dd4a97
JS		 459dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
460dnl
461dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
462dnl structure definition. If this is successful, runs IF-MATCH, otherwise
463dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
464dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
465dnl translated to uppercase.
466AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
467 AC_MSG_CHECKING([whether $2 has member $3 in $1])
468 if test -f $1; then
83a27884 469 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 470 status=$?
471 case $status in
472 0)
473 AC_MSG_RESULT([yes])
474 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
475 ;;
476 1)
477 AC_MSG_RESULT([no])
478 $5
479 ;;
480 *)
481 AC_MSG_ERROR([grep exited with status $status])
482 ;;
483 esac
484 else
485 AC_MSG_RESULT([file not found])
486 $5
487 fi
488])
489
71ce9edd
JR		 490dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
491dnl
492dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
493dnl the function signature starting from the line matching FUNCTION
494dnl and ending with the line containing the closing parenthesis. If
495dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
496dnl IF-MATCH is empty then it defines to
497dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
498dnl <REGEX> translated to uppercase.
499AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
500 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
501 if test -f $1; then
502 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
503 status=$?
504 case $status in
505 0)
506 AC_MSG_RESULT([yes])
507 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
508 ;;
509 1)
510 AC_MSG_RESULT([no])
511 $5
512 ;;
513 *)
514 AC_MSG_ERROR([grep exited with status $status])
515 ;;
516 esac
517 else
518 AC_MSG_RESULT([file not found])
519 $5
520 fi
521])
522
82b7e6d1
GR		 523dnl OVS_FIND_OP_PARAM_IFELSE(FILE, OP, REGEX, [IF-MATCH], [IF-NO-MATCH])
524dnl
525dnl Looks for OP in FILE. If it is found, greps for REGEX within the
526dnl OP definition. If this is successful, runs IF-MATCH, otherwise
527dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
528dnl OVS_DEFINE(HAVE_<OP>_WITH_<REGEX>), with <OP> and <REGEX>
529dnl translated to uppercase.
530AC_DEFUN([OVS_FIND_OP_PARAM_IFELSE], [
531 AC_MSG_CHECKING([whether $2 has member $3 in $1])
532 if test -f $1; then
533 awk '/$2[[ \t\n]]*\)\(/,/;/' $1 2>/dev/null | grep '$3' >/dev/null
534 status=$?
535 case $status in
536 0)
537 AC_MSG_RESULT([yes])
538 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
539 ;;
540 1)
541 AC_MSG_RESULT([no])
542 $5
543 ;;
544 *)
545 AC_MSG_ERROR([grep exited with status $status])
546 ;;
547 esac
548 else
549 AC_MSG_RESULT([file not found])
550 $5
551 fi
552])
553
064af421
BP		 554dnl OVS_DEFINE(NAME)
555dnl
556dnl Defines NAME to 1 in kcompat.h.
557AC_DEFUN([OVS_DEFINE], [
22bcc0e7 558 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 559])
560
e3438006 561dnl OVS_CHECK_LINUX_COMPAT
064af421 562dnl
8063e095 563dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 564dnl the directory in $KBUILD.
565AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 566 rm -f datapath/linux/kcompat.h.new
567 mkdir -p datapath/linux
568 : > datapath/linux/kcompat.h.new
4aa13c0c 569
e23775f2
PS		 570 echo '#include <linux/version.h>
571#ifndef RHEL_RELEASE_CODE
572#define RHEL_RELEASE_CODE 0
573#define RHEL_RELEASE_VERSION(a, b) 0
574#endif' >> datapath/linux/kcompat.h.new
575
e3438006 576 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 577 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
578
db1dcb23
DB		 579 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
580 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
581
e23775f2
PS		 582 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
583 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
584 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
585
e3438006 586 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 587 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 588 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 589
8aef057b 590 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 591 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 592 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
593 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 594
d923a695 595 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 596 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 597
e23775f2
PS		 598 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
599 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
600 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 601 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 602 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 603 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 604
e3438006 605 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 606 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 607 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
608 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 609 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
610 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
611
13dd4a97
JS		 612 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
613 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 614 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
615 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 616 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
617 [ip_do_fragment], [net],
618 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 619 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
620 [ip_local_out], [net],
621 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
622
cfda4537 623 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 624
625 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
626 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 627 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 628 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
629 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 630 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
631 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 632 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 633 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 634 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
635 [frags_work])
d1c390e6
JS		 636 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
637 [rwlock])
e0d45da3
JS		 638 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
639 [list_evictor])
38f45380 640 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 641 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
642 [sub_frag_mem_limit], [struct.netns_frags],
643 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
644 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
645 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 646 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
647 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 648
f2252c61
PS		 649 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
650 dnl OVS does not really need ipv6 label field, but its presence signifies that
651 dnl the stack has all required ipv6 support.
652 dnl OVS also does not need dst_cache But this dependency allows us to write
653 dnl much cleaner code.
654
3259c4ff
PS		 655 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
656 [label],
657 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
658 [iptunnel_pull_offloads],
997d327d 659 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 660 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
661 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 662
138df3e5
GR		 663 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
664 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 665 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
666 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 667 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
668 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 669 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 670 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
671 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
672 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 673 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 674 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 675 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 676 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 677 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 678 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
679 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 680 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
681 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 682 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 683 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 684 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
685 dnl So check type of tstats.
686 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
687 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 688 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
689 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 690 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 691 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
692 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
693 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
694 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 695 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 696 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
697 [extended])
7efb1e09
PS		 698 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
699 [netdev_master_upper_dev_link], [upper_priv],
700 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 701 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
702 [netdev_master_upper_dev_link_rh],
703 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
704
6c0bf091
JW		 705 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
706 [max_mtu])
39ca3383
YHW		 707 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
708 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 709 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
710 [dev_change_flags], [extack],
711 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 712
713 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 714 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
715 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 716 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 717 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
718 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 719 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
720 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
721 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
722 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 723 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 724 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 725
0643a78b 726
e4e04c3b 727 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 728 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 729
6d9b6937
JR		 730 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
731 [nf_conn], [struct timer_list[[ \t]]*timeout],
732 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
733 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
734 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
735
71ce9edd
JR		 736 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
737 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 738 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 739 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
740 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 741 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 742 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
743 [nf_ct_set])
56ec5593
JS		 744 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
745 [nf_ct_is_untracked])
c1d728db
YHW		 746 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
747 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 748 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
749 [nf_ct_zone_init])
eca4cde0
YS		 750 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
751 [net_ns_get])
459064e7
JS		 752 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
753 [nf_connlabels_get])
7f2ab8cd
JR		 754 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
755 [nf_connlabels_get], [int bit],
756 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 757 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
758 [nf_conn_labels], [words])
0d330e42
JR		 759 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
760 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 761 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 762 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
763 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 764 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 765 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 766 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
767 [int nf_conncount_add],
768 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 769 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
770 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
771 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
772 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
773 [\(*nf_ct_timeout_find_get_hook\)], [net],
774 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 775
9048ab60
GR		 776 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
777 [prandom_u32[[\(]]],
778 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 779 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 780
e23775f2
PS		 781 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
782 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
783 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
784 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
785 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
786
e3438006
BP		 787 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
788 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 789 [rcu_read_lock_held])])
8fa52250 790 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 791 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 792 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
793 [rtnl_create_link], [extack],
794 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 796
6a33828d
BP		 797 # Check for the proto_data_valid member in struct sk_buff. The [^@]
798 # is necessary because some versions of this header remove the
799 # member but retain the kerneldoc comment that describes it (which
800 # starts with @). The brackets must be doubled because of m4
801 # quoting rules.
e3438006 802 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 803 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 804 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 805 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 806 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 807 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 808 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 809 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 810 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
811 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 812 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 813 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 814 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 815 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 816 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
817 [skb_reset_tail_pointer])
e3438006 818 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 819 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 820 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 821 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 822 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 823 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 824 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 825 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 826 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 827 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 828 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
829 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 830 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 831 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
832 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 833 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
834 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 835 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 836 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 837 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 838 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 839 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 840 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 841 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 842 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 843 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 844
e3438006 845 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 846 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 847 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
848 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 849
e3438006
BP		 850 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
851 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 852
0d03e51c 853 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 854 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 855
114fce23
SG		 856 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
857 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 858 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 859 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
860 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 861 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 862 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
863 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
f1e9590e 864 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
0643a78b
PS		 865 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
866 [genl_notify], [net],
867 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
868
13dd4a97
JS		 869
870 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
871 [genl_multicast_group], [id])
fdce83a3 872 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 873
cc1d0dea 874 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 875 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 876 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 877 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 878 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 879 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
880 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 881 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
882 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
883
91b37647 884 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 885 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 886 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
887 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
888 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 889 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 890 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 891 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
09c33996 892 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
6dbd98e6
SH		 893 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
894 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 895 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
896 [nla_parse], [netlink_ext_ack],
897 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 898
c4e976db
JG		 899 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
900
1f649f1c 901 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 902 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 903 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 904 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 905 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 906
aadd6ae9
JS		 907 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
908 [metadata_dst_alloc], [metadata_type])
909
09f27436
JG		 910 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
911
3174a818
TG		 912 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
913 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 914 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 915 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
916 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
917 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 918 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 919 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
920 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 921 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
922 [gro_receive])
e23775f2
PS		 923
924 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 925 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
926 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
927 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 928
b7ebebcd
PS		 929 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
930 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 931 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
932 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 933 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
934 [udp_add_offload], [net],
935 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 936 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
937 [nf_defrag_ipv6_enable], [net],
938 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 939 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
940 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 941 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
942 [needs_free_netdev],
943 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 944 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
945 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 946 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 947 [nf_conntrack_helper_put],
948 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
4c941202
YHW		 949 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
950 [nf_nat_helper_try_module_get])
951 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
952 [nf_nat_helper_put])
f90e29c9 953 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 954 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 955 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
956 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 957 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
958 [extack],
959 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 960 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
961 [list],
962 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 963 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
964 [IP_CT_UNTRACKED])
36d3520b
GR		 965 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
966 [netdev_master_upper_dev_link], [extack],
967 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 968 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
969 [__LINUX_COMPILER_TYPES_H],
970 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 971 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
972 [ktime_get_ts64],
973 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 974 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
975 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
976 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 977 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
978 [ktime_get_ns],
979 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 980 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
981 frag_percpu_counter_batch[],
982 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 983 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
984 [null_compute_pseudo],
985 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
986 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
987 [__skb_checksum_convert],
988 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
989 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
990 [max_mtu],
991 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 992 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
993 [erspan_ver],
994 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
995 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
996 [SKB_GSO_IPXIP6],
997 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
998 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
999 [ip6_make_flowlabel], [fl6],
1000 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1001 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1002 [auto_flowlabels],
1003 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1004 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1005 [netif_keep_dst],
1006 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1007 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1008 [ndo_get_iflink],
1009 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1010 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1011 [skb_set_inner_ipproto],
1012 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1013 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1014 [tunnel_encap_types],
1015 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1016 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1017 [IFLA_IPTUN_ENCAP_TYPE],
1018 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1019 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1020 [IFLA_IPTUN_COLLECT_METADATA],
1021 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 1022 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1023 [IFLA_GRE_ENCAP_DPORT])
1024 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1025 [IFLA_GRE_COLLECT_METADATA])
1026 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1027 [IFLA_GRE_IGNORE_DF])
1028 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1029 [IFLA_GRE_FWMARK])
1030 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1031 [IFLA_GRE_ERSPAN_INDEX])
1032 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1033 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 1034 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1035 [IFLA_IPTUN_FWMARK])
10f24236
GR		 1036 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1037 [csum_valid],
1038 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 1039 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1040 [vlan_present],
1041 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 1042 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1043 [skb_checksum_simple_validate])
44a629b5
GR		 1044 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1045 [void.*ndo_get_stats64],
1046 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 1047 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1048 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1049 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1050 [ip_tunnel_info_opts_set], [flags],
1051 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1052 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1053 [rnd],
1054 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1055 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1056 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1057 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1058 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1059 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1060 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1061 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1062 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1063 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1064 [nf_conntrack_l3proto],
1065 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1066 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1067 [nf_conntrack_in], [nf_hook_state],
1068 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1069 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1070 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1071 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1072 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1073 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1074 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1075 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1076 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1077 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1078 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1079 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
6634cc8a
GR		 1080 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1081 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
f77d85b1
GR		 1082 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1083 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
2ef0f1c2
JB		 1084 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1085 [policy],
1086 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
6db0f72d
JB		 1087 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1088 [nla_parse_deprecated_strict],
1089 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
82b7e6d1
GR		 1090 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1091 [validate], [extack],
1092 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
21a719d6 1093
22bcc0e7
JG		 1094 if cmp -s datapath/linux/kcompat.h.new \
1095 datapath/linux/kcompat.h >/dev/null 2>&1; then
1096 rm datapath/linux/kcompat.h.new
064af421 1097 else
22bcc0e7 1098 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1099 fi
1100])
1101
f6eb6b20 1102dnl Checks for net/if_dl.h.
d30e714c 1103dnl
d23fa2ed
YT		 1104dnl (We use this as a proxy for checking whether we're building on FreeBSD
1105dnl or NetBSD.)
9360d9b7
EM		 1106AC_DEFUN([OVS_CHECK_IF_DL],
1107 [AC_CHECK_HEADER([net/if_dl.h],
1108 [HAVE_IF_DL=yes],
1109 [HAVE_IF_DL=no])
1110 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1111 if test "$HAVE_IF_DL" = yes; then
1112 AC_DEFINE([HAVE_IF_DL], [1],
1113 [Define to 1 if net/if_dl.h is available.])
d30e714c 1114
d23fa2ed 1115 # On these platforms we use libpcap to access network devices.
d30e714c 1116 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1117 fi])
1118
e50097d2
BP		 1119dnl Checks for buggy strtok_r.
1120dnl
1121dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1122dnl with optimization that can cause segfaults:
1123dnl
1124dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1125AC_DEFUN([OVS_CHECK_STRTOK_R],
1126 [AC_CACHE_CHECK(
1127 [whether strtok_r macro segfaults on some inputs],
1128 [ovs_cv_strtok_r_bug],
1129 [AC_RUN_IFELSE(
1130 [AC_LANG_PROGRAM([#include <stdio.h>
1131 #include <string.h>
1132 ],
416e7132
BP		 1133 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1134 /* Assume bug is present, because relatively minor
1135 changes in compiler settings (e.g. optimization
1136 level) can make it crop up. */
1137 return 1;
1138 #else
1139 char string[] = ":::";
e50097d2
BP		 1140 char *save_ptr = (char *) 0xc0ffee;
1141 char *token1, *token2;
1142 token1 = strtok_r(string, ":", &save_ptr);
1143 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1144 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1145 printf ("%s %s\n", token1, token2);
1146 return 0;
416e7132 1147 #endif
e50097d2
BP		 1148 ]])],
1149 [ovs_cv_strtok_r_bug=no],
1150 [ovs_cv_strtok_r_bug=yes],
1151 [ovs_cv_strtok_r_bug=yes])])
1152 if test $ovs_cv_strtok_r_bug = yes; then
1153 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1154 [Define if strtok_r macro segfaults on some inputs])
1155 fi
1156])
1157
064af421
BP		 1158dnl ----------------------------------------------------------------------
1159dnl These macros are from GNU PSPP, with the following original license:
1160dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1161dnl This file is free software; the Free Software Foundation
1162dnl gives unlimited permission to copy and/or distribute it,
1163dnl with or without modifications, as long as this notice is preserved.
1164
50194820 1165AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1166 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1167 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1168 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1169 dnl Include -Werror in the compiler options, because without -Werror
1170 dnl clang's GCC-compatible compiler driver does not return a failure
1171 dnl exit status even though it complains about options it does not
1172 dnl understand.
c2deac54
YT		 1173 dnl
1174 dnl Also, check stderr as gcc exits with status 0 for options
1175 dnl rejected at getopt level.
1176 dnl % touch /tmp/a.c
1177 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1178 dnl gcc: unrecognized option '-Qunused-arguments'
1179 dnl 0
1180 dnl %
4c1e8cb9
BP		 1181 dnl
1182 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1183 dnl it does not understand, unless it has another error to report, so
1184 dnl instead of testing for -Wno-<foo>, test for the positive version.
1185 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1186 AC_COMPILE_IFELSE(
1187 [AC_LANG_SOURCE([int x;])],
1188 [if test -s conftest.err && grep "unrecognized option" conftest.err
1189 then
1190 ovs_cv_name[]=no
1191 else
1192 ovs_cv_name[]=yes
1193 fi],
1194 [ovs_cv_name[]=no])
064af421
BP		 1195 CFLAGS="$ovs_save_CFLAGS"])
1196 if test $ovs_cv_name = yes; then
83f6c050 1197 m4_if([$2], [], [:], [$2])
064af421
BP		 1198 else
1199 m4_if([$3], [], [:], [$3])
1200 fi
1201])
1202
50194820
BP		 1203dnl OVS_CHECK_WERROR
1204dnl
1205dnl Check whether the C compiler accepts -Werror.
1206dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1207AC_DEFUN([OVS_CHECK_WERROR],
1208 [WERROR=
1209 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1210
1211dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1212dnl Check whether the given C compiler OPTION is accepted.
1213dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1214AC_DEFUN([OVS_CHECK_CC_OPTION],
1215 [AC_REQUIRE([OVS_CHECK_WERROR])
1216 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1217
064af421
BP		 1218dnl OVS_ENABLE_OPTION([OPTION])
1219dnl Check whether the given C compiler OPTION is accepted.
d161c099 1220dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1221dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1222AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1223 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1224 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1225
1226dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1227dnl Check whether the given C compiler OPTION is accepted.
1228dnl If so, enable the given Automake CONDITIONAL.
1229
1230dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1231AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1232 [OVS_CHECK_CC_OPTION(
1233 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1234 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1235dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1236
1237dnl Check for too-old XenServer.
1238AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1239 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1240 [if test -e /etc/redhat-release; then
1241 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1242 fi
1243 if test -z "$ovs_cv_xsversion"; then
1244 ovs_cv_xsversion=none
1245 fi])
1246 case $ovs_cv_xsversion in
1247 none)
1248 ;;
1249
1250 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1251 [[6-9]]* | dnl XenServer 6 or later
1252 5.[[7-9]]* | dnl XenServer 5.7 or later
1253 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1254 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1255 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1256 ;;
1257
1258 *)
1259 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1260 ;;
1261 esac])
29d935d6 1262
643c0c34
BP		 1263dnl OVS_CHECK_SPARSE_TARGET
1264dnl
1265dnl The "cgcc" script from "sparse" isn't very good at detecting the
1266dnl target for which the code is being built. This helps it out.
1267AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1268 [AC_CACHE_CHECK(
1269 [target hint for cgcc],
1270 [ac_cv_sparse_target],
1271 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1272 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1273 [x86_64-*], [ac_cv_sparse_target=x86_64],
1274 [ac_cv_sparse_target=other])])
1275 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1276 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1277 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1278 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1279
e5273084 1280 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1281 dnl allow "sparse" correctly check the same code that will be built.
1282 dnl Required for checking DPDK headers.
1283 AC_MSG_CHECKING([vector options for cgcc])
1284 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1285 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1286 AC_MSG_RESULT([$VECTOR])
1287 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1288
643c0c34
BP		 1289 AC_SUBST([SPARSEFLAGS])
1290 AC_SUBST([CGCCFLAGS])])
1291
32e96ab7
AZ		 1292dnl OVS_SPARSE_EXTRA_INCLUDES
1293dnl
1294dnl The cgcc script from "sparse" does not search gcc's default
1295dnl search path. Get the default search path from GCC and pass
1296dnl them to sparse.
1297AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1298 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1299 [`$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 ' ' `] ))
1300
29d935d6
BP		 1301dnl OVS_ENABLE_SPARSE
1302AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1303 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1304 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1305 : ${SPARSE=sparse}
1306 AC_SUBST([SPARSE])
1307 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1308 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1309
1310 AC_ARG_ENABLE(
1311 [sparse],
1312 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1313 [], [enable_sparse=no])
1314 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1315
0eaaacac
FL		 1316dnl OVS_CTAGS_IDENTIFIERS
1317dnl
1318dnl ctags ignores symbols with extras identifiers. This builds a list of
1319dnl specially handled identifiers to be ignored.
1320AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1321 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1322 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1323
8a8cd0ac
BP		 1324dnl OVS_PTHREAD_SET_NAME
1325dnl
1326dnl This checks for three known variants of pthreads functions for setting
1327dnl the name of the current thread:
1328dnl
1329dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1330dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1331dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1332dnl
1333dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1334dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1335dnl provide to it.
1336dnl
1337dnl This macro defines:
1338dnl
1339dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1340dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1341dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1342AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1343 [AC_CHECK_FUNCS([pthread_set_name_np])
1344 if test $ac_cv_func_pthread_set_name_np != yes; then
1345 AC_CACHE_CHECK(
1346 [for pthread_setname_np() variant],
1347 [ovs_cv_pthread_setname_np],
1348 [AC_LINK_IFELSE(
a0903134 1349 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1350 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1351 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1352 [AC_LINK_IFELSE(
a0903134 1353 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1354], [pthread_setname_np(pthread_self(), "%s", "name");])],
1355 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1356 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1357 case $ovs_cv_pthread_setname_np in # (
1358 glibc)
a0903134
YT		 1359 AC_DEFINE(
1360 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1361 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1362 ;; # (
8a8cd0ac 1363 netbsd)
a0903134
YT		 1364 AC_DEFINE(
1365 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1366 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1367 ;;
8a8cd0ac
BP		 1368 esac
1369 fi])
5020f5f0
BP		 1370
1371dnl OVS_CHECK_LINUX_HOST.
1372dnl
1373dnl Checks whether we're building for a Linux host, based on the presence of
1374dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1375dnl LINUX based on the result.
1376AC_DEFUN([OVS_CHECK_LINUX_HOST],
1377 [AC_CACHE_CHECK(
1378 [whether __linux__ is defined],
1379 [ovs_cv_linux],
1380 [AC_COMPILE_IFELSE(
1381 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1382 [ovs_cv_linux=true],
1383 [ovs_cv_linux=false])])
1384 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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