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datapath: Handle NF_NAT_NEEDED replacement
[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
YS		 153 if test "$version" -ge 5; then
154 if test "$version" = 5 && test "$patchlevel" -le 0; then
155 : # Linux 5.x
d76aabea 156 else
2adada0e 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.0.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
2adada0e
YS		 159 elif test "$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
1dc0da67
PB		 177dnl OVS_CHECK_LINUX_TC
178dnl
179dnl Configure Linux tc compat.
180AC_DEFUN([OVS_CHECK_LINUX_TC], [
181 AC_COMPILE_IFELSE([
182 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
dd83253e 183 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
1dc0da67 184 ])],
dd83253e
OG		 185 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
186 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
1dc0da67
PB		 187
188 AC_COMPILE_IFELSE([
189 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
190 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
191 ])],
192 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 193 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67 194
abef7959
JH		 195 AC_COMPILE_IFELSE([
196 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
197 int x = TCA_MPLS_TTL;
198 ])],
199 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
200 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
201
1dc0da67
PB		 202 AC_COMPILE_IFELSE([
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 204 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 205 ])],
4b12e454
OG		 206 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
207 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 208
209 AC_COMPILE_IFELSE([
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
211 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
212 ])],
213 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 214 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH		 215
216 AC_COMPILE_IFELSE([
217 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
218 int x = TCA_SKBEDIT_FLAGS;
219 ])],
220 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
221 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB		 222])
223
8c7130da
AC		 224dnl OVS_CHECK_LINUX_SCTP_CT
225dnl
226dnl Checks for kernels which need additional SCTP state
227AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
228 AC_COMPILE_IFELSE([
229 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
230#include <linux/netfilter/nfnetlink_conntrack.h>
231#include <linux/netfilter/nf_conntrack_common.h>
232#include <linux/netfilter/nf_conntrack_sctp.h>], [
233 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
234 ])],
235 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
236 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
237])
238
f0d1ead8
IM		 239dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
240dnl
241dnl Check for a function in a library list.
242AC_DEFUN([OVS_FIND_DEPENDENCY], [
243 AC_SEARCH_LIBS([$1], [$2], [], [
244 AC_MSG_ERROR([unable to find $3, install the dependency package])
245 ])
246])
247
0de1b425
WT		 248dnl OVS_CHECK_LINUX_AF_XDP
249dnl
250dnl Check both Linux kernel AF_XDP and libbpf support
251AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
252 AC_ARG_ENABLE([afxdp],
253 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
254 [], [enable_afxdp=no])
255 AC_MSG_CHECKING([whether AF_XDP is enabled])
256 if test "$enable_afxdp" != yes; then
257 AC_MSG_RESULT([no])
258 AF_XDP_ENABLE=false
259 else
260 AC_MSG_RESULT([yes])
261 AF_XDP_ENABLE=true
262
263 AC_CHECK_HEADER([bpf/libbpf.h], [],
264 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
265
266 AC_CHECK_HEADER([linux/if_xdp.h], [],
267 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
268
269 AC_CHECK_HEADER([bpf/xsk.h], [],
270 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
271
272 AC_CHECK_FUNCS([pthread_spin_lock], [],
273 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
274
275 AC_DEFINE([HAVE_AF_XDP], [1],
276 [Define to 1 if AF_XDP support is available and enabled.])
277 LIBBPF_LDADD=" -lbpf -lelf"
278 AC_SUBST([LIBBPF_LDADD])
279 fi
280 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
281])
282
8a9562d2
PS		 283dnl OVS_CHECK_DPDK
284dnl
285dnl Configure DPDK source tree
286AC_DEFUN([OVS_CHECK_DPDK], [
287 AC_ARG_WITH([dpdk],
288 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 289 [Specify the DPDK build directory])],
290 [have_dpdk=true])
8a9562d2 291
40b5ea86 292 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 293 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 294 AC_MSG_RESULT([no])
295 DPDKLIB_FOUND=false
296 else
297 AC_MSG_RESULT([yes])
298 case "$with_dpdk" in
299 yes)
300 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 301 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
302 DPDK_INCLUDE="$DPDK_CFLAGS"
303 DPDK_LIB="$DPDK_LIBS"], [
304 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
305 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 306 ;;
307 *)
308 DPDK_AUTO_DISCOVER="false"
96195c09 309 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 310 # If 'with_dpdk' is passed install directory, point to headers
311 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 312 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
313 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
314 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
315 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 316 fi
40b5ea86 317 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 318 DPDK_LIB="-ldpdk"
40b5ea86
BB		 319 ;;
320 esac
8a9562d2 321
95626395
TG		 322 ovs_save_CFLAGS="$CFLAGS"
323 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 324 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 325 if test "$DPDK_AUTO_DISCOVER" = "false"; then
326 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
327 fi
328
865cee2b
IM		 329 AC_CHECK_HEADERS([rte_config.h], [], [
330 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
331 ], [AC_INCLUDES_DEFAULT])
332
f0d1ead8
IM		 333 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
334 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
335 ], [], [[#include <rte_config.h>]])
4b88d678 336
f0d1ead8
IM		 337 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
338 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
339 ], [], [[#include <rte_config.h>]])
fc3b425f 340
f0d1ead8
IM		 341 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
342 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
343 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
344 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
345 ], [], [[#include <rte_config.h>]])
346 ], [], [[#include <rte_config.h>]])
939bad9a 347
f0d1ead8
IM		 348 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
349 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
350 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
351 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
352 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
353 ], [[#include <rte_config.h>]])
354 ], [], [[#include <rte_config.h>]])
84844e3f 355
f0d1ead8
IM		 356 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
357 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
358 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
359 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
360 ], [[#include <rte_config.h>]])
361 ], [], [[#include <rte_config.h>]])
939bad9a 362
e2f37511
IM		 363 # DPDK uses dlopen to load plugins.
364 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
365
366 AC_MSG_CHECKING([whether linking with dpdk works])
367 LIBS="$DPDK_LIB $LIBS"
368 AC_LINK_IFELSE(
369 [AC_LANG_PROGRAM([#include <rte_config.h>
370 #include <rte_eal.h>],
371 [int rte_argc; char ** rte_argv;
372 rte_eal_init(rte_argc, rte_argv);])],
373 [AC_MSG_RESULT([yes])
374 DPDKLIB_FOUND=true],
375 [AC_MSG_RESULT([no])
376 if test "$DPDK_AUTO_DISCOVER" = "true"; then
377 AC_MSG_ERROR(m4_normalize([
378 Could not find DPDK library in default search path, Use --with-dpdk
379 to specify the DPDK library installed in non-standard location]))
380 else
381 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
382 fi
383 ])
c1223b11 384
95626395
TG		 385 CFLAGS="$ovs_save_CFLAGS"
386 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 387 if test "$DPDK_AUTO_DISCOVER" = "false"; then
388 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
389 fi
96195c09 390 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 391 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 392
3c94676c 393 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 394 #
395 # This happens because the rest of the DPDK code doesn't use any symbol in
396 # the pmd driver objects, and the drivers register themselves using an
397 # __attribute__((constructor)) function.
398 #
399 # These options are specified inside a single -Wl directive to prevent
400 # autotools from reordering them.
5b5aa2d8
CE		 401 #
402 # OTOH newer versions of dpdk pkg-config (generated with Meson)
403 # will already have flagged just the right set of libs with
404 # --whole-archive - in those cases do not wrap it once more.
405 case "$DPDK_LIB" in
406 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
407 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
408 esac
9475dfeb 409 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 410 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 411 fi
412
40b5ea86 413 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 414])
415
8828e5c7 416dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 417dnl
418dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 419dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
420dnl <REGEX> translated to uppercase.
064af421
BP		 421AC_DEFUN([OVS_GREP_IFELSE], [
422 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 423 if test -f $1; then
424 grep '$2' $1 >/dev/null 2>&1
425 status=$?
426 case $status in
997d327d 427 0)
7507ec48 428 AC_MSG_RESULT([yes])
8828e5c7 429 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 430 ;;
997d327d 431 1)
7507ec48
JG		 432 AC_MSG_RESULT([no])
433 $4
434 ;;
997d327d 435 *)
7507ec48
JG		 436 AC_MSG_ERROR([grep exited with status $status])
437 ;;
438 esac
439 else
440 AC_MSG_RESULT([file not found])
441 $4
442 fi
064af421
BP		 443])
444
13dd4a97
JS		 445dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
446dnl
447dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
448dnl structure definition. If this is successful, runs IF-MATCH, otherwise
449dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
450dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
451dnl translated to uppercase.
452AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
453 AC_MSG_CHECKING([whether $2 has member $3 in $1])
454 if test -f $1; then
83a27884 455 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 456 status=$?
457 case $status in
458 0)
459 AC_MSG_RESULT([yes])
460 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
461 ;;
462 1)
463 AC_MSG_RESULT([no])
464 $5
465 ;;
466 *)
467 AC_MSG_ERROR([grep exited with status $status])
468 ;;
469 esac
470 else
471 AC_MSG_RESULT([file not found])
472 $5
473 fi
474])
475
71ce9edd
JR		 476dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
477dnl
478dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
479dnl the function signature starting from the line matching FUNCTION
480dnl and ending with the line containing the closing parenthesis. If
481dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
482dnl IF-MATCH is empty then it defines to
483dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
484dnl <REGEX> translated to uppercase.
485AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
486 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
487 if test -f $1; then
488 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
489 status=$?
490 case $status in
491 0)
492 AC_MSG_RESULT([yes])
493 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
494 ;;
495 1)
496 AC_MSG_RESULT([no])
497 $5
498 ;;
499 *)
500 AC_MSG_ERROR([grep exited with status $status])
501 ;;
502 esac
503 else
504 AC_MSG_RESULT([file not found])
505 $5
506 fi
507])
508
064af421
BP		 509dnl OVS_DEFINE(NAME)
510dnl
511dnl Defines NAME to 1 in kcompat.h.
512AC_DEFUN([OVS_DEFINE], [
22bcc0e7 513 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 514])
515
e3438006 516dnl OVS_CHECK_LINUX_COMPAT
064af421 517dnl
8063e095 518dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 519dnl the directory in $KBUILD.
520AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 521 rm -f datapath/linux/kcompat.h.new
522 mkdir -p datapath/linux
523 : > datapath/linux/kcompat.h.new
4aa13c0c 524
e23775f2
PS		 525 echo '#include <linux/version.h>
526#ifndef RHEL_RELEASE_CODE
527#define RHEL_RELEASE_CODE 0
528#define RHEL_RELEASE_VERSION(a, b) 0
529#endif' >> datapath/linux/kcompat.h.new
530
e3438006 531 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 532 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
533
db1dcb23
DB		 534 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
535 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
536
e23775f2
PS		 537 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
538 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
539 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
540
e3438006 541 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 542 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 543 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 544
8aef057b 545 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 546 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 547 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
548 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 549
d923a695 550 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 551 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 552
e23775f2
PS		 553 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
554 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
555 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 556 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 557 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 558 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 559
e3438006 560 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 561 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 562 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
563 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 564 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
565 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
566
13dd4a97
JS		 567 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
568 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 569 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
570 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 571 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
572 [ip_do_fragment], [net],
573 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 574 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
575 [ip_local_out], [net],
576 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
577
cfda4537 578 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 579
580 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
581 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 582 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 583 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
584 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 585 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
586 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 587 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 588 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 589 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
590 [frags_work])
d1c390e6
JS		 591 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
592 [rwlock])
e0d45da3
JS		 593 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
594 [list_evictor])
38f45380 595 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 596 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
597 [sub_frag_mem_limit], [struct.netns_frags],
598 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
599 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
600 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 601 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
602 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 603
f2252c61
PS		 604 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
605 dnl OVS does not really need ipv6 label field, but its presence signifies that
606 dnl the stack has all required ipv6 support.
607 dnl OVS also does not need dst_cache But this dependency allows us to write
608 dnl much cleaner code.
609
3259c4ff
PS		 610 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
611 [label],
612 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
613 [iptunnel_pull_offloads],
997d327d 614 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 615 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
616 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 617
138df3e5
GR		 618 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
619 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 620 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
621 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 622 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
623 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 624 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 625 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
626 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
627 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 628 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 629 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 630 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 631 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 632 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 633 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
634 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 635 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
636 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 637 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 638 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 639 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
640 dnl So check type of tstats.
641 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
642 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 643 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
644 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 645 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 646 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
647 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
648 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
649 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 650 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 651 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
652 [extended])
7efb1e09
PS		 653 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
654 [netdev_master_upper_dev_link], [upper_priv],
655 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 656 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
657 [netdev_master_upper_dev_link_rh],
658 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
659
6c0bf091
JW		 660 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
661 [max_mtu])
39ca3383
YHW		 662 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
663 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 664 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
665 [dev_change_flags], [extack],
666 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 667
668 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 669 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
670 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 671 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 672 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
673 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 674 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
675 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
676 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
677 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 678 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 679 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 680
0643a78b 681
e4e04c3b 682 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 683 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 684
6d9b6937
JR		 685 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
686 [nf_conn], [struct timer_list[[ \t]]*timeout],
687 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
688 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
689 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
690
71ce9edd
JR		 691 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
692 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 693 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 694 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
695 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 696 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 697 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
698 [nf_ct_set])
56ec5593
JS		 699 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
700 [nf_ct_is_untracked])
c1d728db
YHW		 701 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
702 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 703 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
704 [nf_ct_zone_init])
eca4cde0
YS		 705 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
706 [net_ns_get])
459064e7
JS		 707 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
708 [nf_connlabels_get])
7f2ab8cd
JR		 709 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
710 [nf_connlabels_get], [int bit],
711 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 712 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
713 [nf_conn_labels], [words])
0d330e42
JR		 714 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
715 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 716 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 717 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
718 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 719 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 720 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 721 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
722 [int nf_conncount_add],
723 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 724 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
725 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
726 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
727 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
728 [\(*nf_ct_timeout_find_get_hook\)], [net],
729 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 730
9048ab60
GR		 731 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
732 [prandom_u32[[\(]]],
733 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 734 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 735
e23775f2
PS		 736 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
737 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
738 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
739 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
740 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
741
e3438006
BP		 742 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
743 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 744 [rcu_read_lock_held])])
8fa52250 745 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 746 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 747 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
748 [rtnl_create_link], [extack],
749 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 750 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 751
6a33828d
BP		 752 # Check for the proto_data_valid member in struct sk_buff. The [^@]
753 # is necessary because some versions of this header remove the
754 # member but retain the kerneldoc comment that describes it (which
755 # starts with @). The brackets must be doubled because of m4
756 # quoting rules.
e3438006 757 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 758 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 759 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 760 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 761 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 762 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 763 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 764 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 765 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
766 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 767 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 768 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 769 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 770 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 771 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
772 [skb_reset_tail_pointer])
e3438006 773 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 774 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 775 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 776 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 777 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 778 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 779 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 780 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 781 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 782 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 783 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
784 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 785 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 786 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
787 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 788 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
789 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 790 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 791 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 792 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 794 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 796 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 797 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 798 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 799
e3438006 800 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 801 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 802 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 803 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 804 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
805 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 806
e3438006
BP		 807 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
808 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 809
0d03e51c 810 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 811 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 812
114fce23
SG		 813 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
814 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 815 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 816 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
817 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 818 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 819 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
820 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 821 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
822 [genl_notify], [net],
823 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
824
13dd4a97
JS		 825
826 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
827 [genl_multicast_group], [id])
fdce83a3 828 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 829
cc1d0dea 830 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 831 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 832 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 833 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 834 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 835 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
836 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 837 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
838 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
839
91b37647 840 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 841 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 842 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
843 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
844 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 845 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 846 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 847 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 848 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
849 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 850 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
851 [nla_parse], [netlink_ext_ack],
852 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 853
c4e976db
JG		 854 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
855
1f649f1c 856 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 857 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 858 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 859 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 860 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 861
aadd6ae9
JS		 862 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
863 [metadata_dst_alloc], [metadata_type])
864
09f27436
JG		 865 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
866
3174a818
TG		 867 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
868 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 869 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 870 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
871 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
872 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 873 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 874 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
875 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 876 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
877 [gro_receive])
e23775f2
PS		 878
879 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 880 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
881 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
882 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 883
b7ebebcd
PS		 884 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
885 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 886 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
887 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 888 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
889 [udp_add_offload], [net],
890 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 891 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
892 [nf_defrag_ipv6_enable], [net],
893 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 894 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
895 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 896 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
897 [needs_free_netdev],
898 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 899 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
900 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 901 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 902 [nf_conntrack_helper_put],
903 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 904 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 905 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 906 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
907 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 908 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
909 [extack],
910 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 911 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
912 [list],
913 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 914 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
915 [IP_CT_UNTRACKED])
36d3520b
GR		 916 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
917 [netdev_master_upper_dev_link], [extack],
918 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 919 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
920 [__LINUX_COMPILER_TYPES_H],
921 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 922 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
923 [ktime_get_ts64],
924 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 925 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
926 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
927 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 928 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
929 [ktime_get_ns],
930 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 931 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
932 frag_percpu_counter_batch[],
933 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 934 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
935 [null_compute_pseudo],
936 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
937 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
938 [__skb_checksum_convert],
939 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
940 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
941 [max_mtu],
942 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 943 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
944 [erspan_ver],
945 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
946 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
947 [SKB_GSO_IPXIP6],
948 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
949 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
950 [ip6_make_flowlabel], [fl6],
951 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
952 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
953 [auto_flowlabels],
954 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
955 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
956 [netif_keep_dst],
957 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
958 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
959 [ndo_get_iflink],
960 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
961 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
962 [skb_set_inner_ipproto],
963 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
964 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
965 [tunnel_encap_types],
966 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
967 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
968 [IFLA_IPTUN_ENCAP_TYPE],
969 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
970 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
971 [IFLA_IPTUN_COLLECT_METADATA],
972 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 973 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
974 [IFLA_GRE_ENCAP_DPORT])
975 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
976 [IFLA_GRE_COLLECT_METADATA])
977 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
978 [IFLA_GRE_IGNORE_DF])
979 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
980 [IFLA_GRE_FWMARK])
981 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
982 [IFLA_GRE_ERSPAN_INDEX])
983 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
984 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 985 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
986 [IFLA_IPTUN_FWMARK])
10f24236
GR		 987 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
988 [csum_valid],
989 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 990 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
991 [vlan_present],
992 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 993 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
994 [skb_checksum_simple_validate])
44a629b5
GR		 995 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
996 [void.*ndo_get_stats64],
997 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 998 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
999 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1000 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1001 [ip_tunnel_info_opts_set], [flags],
1002 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1003 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1004 [rnd],
1005 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1006 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1007 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1008 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1009 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1010 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1011 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1012 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1013 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1014 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1015 [nf_conntrack_l3proto],
1016 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1017 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1018 [nf_conntrack_in], [nf_hook_state],
1019 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1020 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1021 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1022 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1023 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1024 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1025 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1026 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1027 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1028 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1029 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1030 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
21a719d6 1031
22bcc0e7
JG		 1032 if cmp -s datapath/linux/kcompat.h.new \
1033 datapath/linux/kcompat.h >/dev/null 2>&1; then
1034 rm datapath/linux/kcompat.h.new
064af421 1035 else
22bcc0e7 1036 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1037 fi
1038])
1039
f6eb6b20 1040dnl Checks for net/if_dl.h.
d30e714c 1041dnl
d23fa2ed
YT		 1042dnl (We use this as a proxy for checking whether we're building on FreeBSD
1043dnl or NetBSD.)
9360d9b7
EM		 1044AC_DEFUN([OVS_CHECK_IF_DL],
1045 [AC_CHECK_HEADER([net/if_dl.h],
1046 [HAVE_IF_DL=yes],
1047 [HAVE_IF_DL=no])
1048 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1049 if test "$HAVE_IF_DL" = yes; then
1050 AC_DEFINE([HAVE_IF_DL], [1],
1051 [Define to 1 if net/if_dl.h is available.])
d30e714c 1052
d23fa2ed 1053 # On these platforms we use libpcap to access network devices.
d30e714c 1054 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1055 fi])
1056
e50097d2
BP		 1057dnl Checks for buggy strtok_r.
1058dnl
1059dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1060dnl with optimization that can cause segfaults:
1061dnl
1062dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1063AC_DEFUN([OVS_CHECK_STRTOK_R],
1064 [AC_CACHE_CHECK(
1065 [whether strtok_r macro segfaults on some inputs],
1066 [ovs_cv_strtok_r_bug],
1067 [AC_RUN_IFELSE(
1068 [AC_LANG_PROGRAM([#include <stdio.h>
1069 #include <string.h>
1070 ],
416e7132
BP		 1071 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1072 /* Assume bug is present, because relatively minor
1073 changes in compiler settings (e.g. optimization
1074 level) can make it crop up. */
1075 return 1;
1076 #else
1077 char string[] = ":::";
e50097d2
BP		 1078 char *save_ptr = (char *) 0xc0ffee;
1079 char *token1, *token2;
1080 token1 = strtok_r(string, ":", &save_ptr);
1081 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1082 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1083 printf ("%s %s\n", token1, token2);
1084 return 0;
416e7132 1085 #endif
e50097d2
BP		 1086 ]])],
1087 [ovs_cv_strtok_r_bug=no],
1088 [ovs_cv_strtok_r_bug=yes],
1089 [ovs_cv_strtok_r_bug=yes])])
1090 if test $ovs_cv_strtok_r_bug = yes; then
1091 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1092 [Define if strtok_r macro segfaults on some inputs])
1093 fi
1094])
1095
064af421
BP		 1096dnl ----------------------------------------------------------------------
1097dnl These macros are from GNU PSPP, with the following original license:
1098dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1099dnl This file is free software; the Free Software Foundation
1100dnl gives unlimited permission to copy and/or distribute it,
1101dnl with or without modifications, as long as this notice is preserved.
1102
50194820 1103AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1104 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1105 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1106 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1107 dnl Include -Werror in the compiler options, because without -Werror
1108 dnl clang's GCC-compatible compiler driver does not return a failure
1109 dnl exit status even though it complains about options it does not
1110 dnl understand.
c2deac54
YT		 1111 dnl
1112 dnl Also, check stderr as gcc exits with status 0 for options
1113 dnl rejected at getopt level.
1114 dnl % touch /tmp/a.c
1115 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1116 dnl gcc: unrecognized option '-Qunused-arguments'
1117 dnl 0
1118 dnl %
4c1e8cb9
BP		 1119 dnl
1120 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1121 dnl it does not understand, unless it has another error to report, so
1122 dnl instead of testing for -Wno-<foo>, test for the positive version.
1123 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1124 AC_COMPILE_IFELSE(
1125 [AC_LANG_SOURCE([int x;])],
1126 [if test -s conftest.err && grep "unrecognized option" conftest.err
1127 then
1128 ovs_cv_name[]=no
1129 else
1130 ovs_cv_name[]=yes
1131 fi],
1132 [ovs_cv_name[]=no])
064af421
BP		 1133 CFLAGS="$ovs_save_CFLAGS"])
1134 if test $ovs_cv_name = yes; then
83f6c050 1135 m4_if([$2], [], [:], [$2])
064af421
BP		 1136 else
1137 m4_if([$3], [], [:], [$3])
1138 fi
1139])
1140
50194820
BP		 1141dnl OVS_CHECK_WERROR
1142dnl
1143dnl Check whether the C compiler accepts -Werror.
1144dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1145AC_DEFUN([OVS_CHECK_WERROR],
1146 [WERROR=
1147 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1148
1149dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1150dnl Check whether the given C compiler OPTION is accepted.
1151dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1152AC_DEFUN([OVS_CHECK_CC_OPTION],
1153 [AC_REQUIRE([OVS_CHECK_WERROR])
1154 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1155
064af421
BP		 1156dnl OVS_ENABLE_OPTION([OPTION])
1157dnl Check whether the given C compiler OPTION is accepted.
d161c099 1158dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1159dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1160AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1161 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1162 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1163
1164dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1165dnl Check whether the given C compiler OPTION is accepted.
1166dnl If so, enable the given Automake CONDITIONAL.
1167
1168dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1169AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1170 [OVS_CHECK_CC_OPTION(
1171 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1172 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1173dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1174
1175dnl Check for too-old XenServer.
1176AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1177 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1178 [if test -e /etc/redhat-release; then
1179 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1180 fi
1181 if test -z "$ovs_cv_xsversion"; then
1182 ovs_cv_xsversion=none
1183 fi])
1184 case $ovs_cv_xsversion in
1185 none)
1186 ;;
1187
1188 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1189 [[6-9]]* | dnl XenServer 6 or later
1190 5.[[7-9]]* | dnl XenServer 5.7 or later
1191 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1192 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1193 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1194 ;;
1195
1196 *)
1197 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1198 ;;
1199 esac])
29d935d6 1200
643c0c34
BP		 1201dnl OVS_CHECK_SPARSE_TARGET
1202dnl
1203dnl The "cgcc" script from "sparse" isn't very good at detecting the
1204dnl target for which the code is being built. This helps it out.
1205AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1206 [AC_CACHE_CHECK(
1207 [target hint for cgcc],
1208 [ac_cv_sparse_target],
1209 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1210 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1211 [x86_64-*], [ac_cv_sparse_target=x86_64],
1212 [ac_cv_sparse_target=other])])
1213 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1214 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1215 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1216 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1217
e5273084 1218 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1219 dnl allow "sparse" correctly check the same code that will be built.
1220 dnl Required for checking DPDK headers.
1221 AC_MSG_CHECKING([vector options for cgcc])
1222 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1223 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1224 AC_MSG_RESULT([$VECTOR])
1225 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1226
643c0c34
BP		 1227 AC_SUBST([SPARSEFLAGS])
1228 AC_SUBST([CGCCFLAGS])])
1229
32e96ab7
AZ		 1230dnl OVS_SPARSE_EXTRA_INCLUDES
1231dnl
1232dnl The cgcc script from "sparse" does not search gcc's default
1233dnl search path. Get the default search path from GCC and pass
1234dnl them to sparse.
1235AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1236 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1237 [`$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 ' ' `] ))
1238
29d935d6
BP		 1239dnl OVS_ENABLE_SPARSE
1240AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1241 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1242 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1243 : ${SPARSE=sparse}
1244 AC_SUBST([SPARSE])
1245 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1246 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1247
1248 AC_ARG_ENABLE(
1249 [sparse],
1250 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1251 [], [enable_sparse=no])
1252 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1253
0eaaacac
FL		 1254dnl OVS_CTAGS_IDENTIFIERS
1255dnl
1256dnl ctags ignores symbols with extras identifiers. This builds a list of
1257dnl specially handled identifiers to be ignored.
1258AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1259 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1260 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1261
8a8cd0ac
BP		 1262dnl OVS_PTHREAD_SET_NAME
1263dnl
1264dnl This checks for three known variants of pthreads functions for setting
1265dnl the name of the current thread:
1266dnl
1267dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1268dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1269dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1270dnl
1271dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1272dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1273dnl provide to it.
1274dnl
1275dnl This macro defines:
1276dnl
1277dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1278dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1279dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1280AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1281 [AC_CHECK_FUNCS([pthread_set_name_np])
1282 if test $ac_cv_func_pthread_set_name_np != yes; then
1283 AC_CACHE_CHECK(
1284 [for pthread_setname_np() variant],
1285 [ovs_cv_pthread_setname_np],
1286 [AC_LINK_IFELSE(
a0903134 1287 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1288 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1289 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1290 [AC_LINK_IFELSE(
a0903134 1291 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1292], [pthread_setname_np(pthread_self(), "%s", "name");])],
1293 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1294 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1295 case $ovs_cv_pthread_setname_np in # (
1296 glibc)
a0903134
YT		 1297 AC_DEFINE(
1298 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1299 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1300 ;; # (
8a8cd0ac 1301 netbsd)
a0903134
YT		 1302 AC_DEFINE(
1303 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1304 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1305 ;;
8a8cd0ac
BP		 1306 esac
1307 fi])
5020f5f0
BP		 1308
1309dnl OVS_CHECK_LINUX_HOST.
1310dnl
1311dnl Checks whether we're building for a Linux host, based on the presence of
1312dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1313dnl LINUX based on the result.
1314AC_DEFUN([OVS_CHECK_LINUX_HOST],
1315 [AC_CACHE_CHECK(
1316 [whether __linux__ is defined],
1317 [ovs_cv_linux],
1318 [AC_COMPILE_IFELSE(
1319 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1320 [ovs_cv_linux=true],
1321 [ovs_cv_linux=false])])
1322 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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