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AUTHORS: Add Krishna Kolakaluri.
[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
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
289 AC_DEFINE([HAVE_AF_XDP], [1],
290 [Define to 1 if AF_XDP support is available and enabled.])
291 LIBBPF_LDADD=" -lbpf -lelf"
292 AC_SUBST([LIBBPF_LDADD])
e50547b5
WT		 293
294 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
295 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
296 [XDP need wakeup support detected in xsk.h.])
297 ], [], [[#include <bpf/xsk.h>]])
0de1b425
WT		 298 fi
299 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
300])
301
8a9562d2
PS		 302dnl OVS_CHECK_DPDK
303dnl
304dnl Configure DPDK source tree
305AC_DEFUN([OVS_CHECK_DPDK], [
306 AC_ARG_WITH([dpdk],
307 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 308 [Specify the DPDK build directory])],
309 [have_dpdk=true])
8a9562d2 310
49df3c0f 311 AC_MSG_CHECKING([whether dpdk is enabled])
4c16ee48 312 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 313 AC_MSG_RESULT([no])
314 DPDKLIB_FOUND=false
315 else
316 AC_MSG_RESULT([yes])
317 case "$with_dpdk" in
318 yes)
319 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 320 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
321 DPDK_INCLUDE="$DPDK_CFLAGS"
322 DPDK_LIB="$DPDK_LIBS"], [
323 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
324 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 325 ;;
326 *)
327 DPDK_AUTO_DISCOVER="false"
96195c09 328 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 329 # If 'with_dpdk' is passed install directory, point to headers
330 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 331 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
332 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
333 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
334 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 335 fi
40b5ea86 336 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 337 DPDK_LIB="-ldpdk"
40b5ea86
BB		 338 ;;
339 esac
8a9562d2 340
95626395
TG		 341 ovs_save_CFLAGS="$CFLAGS"
342 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 343 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 344 if test "$DPDK_AUTO_DISCOVER" = "false"; then
345 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
346 fi
347
865cee2b
IM		 348 AC_CHECK_HEADERS([rte_config.h], [], [
349 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
350 ], [AC_INCLUDES_DEFAULT])
351
f0d1ead8
IM		 352 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
353 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
354 ], [], [[#include <rte_config.h>]])
4b88d678 355
f0d1ead8
IM		 356 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
357 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
358 ], [], [[#include <rte_config.h>]])
fc3b425f 359
4ae8c461
IM		 360 AC_MSG_CHECKING([whether DPDK pdump support is enabled])
361 AC_ARG_ENABLE(
362 [dpdk-pdump],
363 [AC_HELP_STRING([--enable-dpdk-pdump],
364 [Enable DPDK pdump packet capture support])],
365 [AC_MSG_RESULT([yes])
366 AC_MSG_WARN([DPDK pdump is deprecated, consider using ovs-tcpdump instead])
367 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
368 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
369 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
370 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
371 ], [
372 AC_MSG_ERROR([RTE_LIBRTE_PDUMP is not defined in rte_config.h])
373 ], [[#include <rte_config.h>]])
374 ], [
375 AC_MSG_ERROR([RTE_LIBRTE_PMD_PCAP is not defined in rte_config.h])
376 ], [[#include <rte_config.h>]])],
377 [AC_MSG_RESULT([no])])
939bad9a 378
f0d1ead8
IM		 379 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
380 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
381 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
382 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
383 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
384 ], [[#include <rte_config.h>]])
385 ], [], [[#include <rte_config.h>]])
84844e3f 386
f0d1ead8
IM		 387 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
388 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
389 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
390 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
391 ], [[#include <rte_config.h>]])
392 ], [], [[#include <rte_config.h>]])
939bad9a 393
e2f37511
IM		 394 # DPDK uses dlopen to load plugins.
395 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
396
397 AC_MSG_CHECKING([whether linking with dpdk works])
398 LIBS="$DPDK_LIB $LIBS"
399 AC_LINK_IFELSE(
400 [AC_LANG_PROGRAM([#include <rte_config.h>
401 #include <rte_eal.h>],
402 [int rte_argc; char ** rte_argv;
403 rte_eal_init(rte_argc, rte_argv);])],
404 [AC_MSG_RESULT([yes])
405 DPDKLIB_FOUND=true],
406 [AC_MSG_RESULT([no])
407 if test "$DPDK_AUTO_DISCOVER" = "true"; then
408 AC_MSG_ERROR(m4_normalize([
409 Could not find DPDK library in default search path, Use --with-dpdk
410 to specify the DPDK library installed in non-standard location]))
411 else
412 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
413 fi
414 ])
c1223b11 415
95626395
TG		 416 CFLAGS="$ovs_save_CFLAGS"
417 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 418 if test "$DPDK_AUTO_DISCOVER" = "false"; then
419 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
420 fi
96195c09 421 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 422 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 423
3c94676c 424 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 425 #
426 # This happens because the rest of the DPDK code doesn't use any symbol in
427 # the pmd driver objects, and the drivers register themselves using an
428 # __attribute__((constructor)) function.
429 #
430 # These options are specified inside a single -Wl directive to prevent
431 # autotools from reordering them.
5b5aa2d8
CE		 432 #
433 # OTOH newer versions of dpdk pkg-config (generated with Meson)
434 # will already have flagged just the right set of libs with
435 # --whole-archive - in those cases do not wrap it once more.
436 case "$DPDK_LIB" in
437 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
438 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
439 esac
9475dfeb 440 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 441 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 442 fi
443
40b5ea86 444 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 445])
446
8828e5c7 447dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 448dnl
449dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 450dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
451dnl <REGEX> translated to uppercase.
064af421
BP		 452AC_DEFUN([OVS_GREP_IFELSE], [
453 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 454 if test -f $1; then
455 grep '$2' $1 >/dev/null 2>&1
456 status=$?
457 case $status in
997d327d 458 0)
7507ec48 459 AC_MSG_RESULT([yes])
8828e5c7 460 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 461 ;;
997d327d 462 1)
7507ec48
JG		 463 AC_MSG_RESULT([no])
464 $4
465 ;;
997d327d 466 *)
7507ec48
JG		 467 AC_MSG_ERROR([grep exited with status $status])
468 ;;
469 esac
470 else
471 AC_MSG_RESULT([file not found])
472 $4
473 fi
064af421
BP		 474])
475
13dd4a97
JS		 476dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
477dnl
478dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
479dnl structure definition. If this is successful, runs IF-MATCH, otherwise
480dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
481dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
482dnl translated to uppercase.
483AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
484 AC_MSG_CHECKING([whether $2 has member $3 in $1])
485 if test -f $1; then
83a27884 486 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 487 status=$?
488 case $status in
489 0)
490 AC_MSG_RESULT([yes])
491 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
492 ;;
493 1)
494 AC_MSG_RESULT([no])
495 $5
496 ;;
497 *)
498 AC_MSG_ERROR([grep exited with status $status])
499 ;;
500 esac
501 else
502 AC_MSG_RESULT([file not found])
503 $5
504 fi
505])
506
71ce9edd
JR		 507dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
508dnl
509dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
510dnl the function signature starting from the line matching FUNCTION
511dnl and ending with the line containing the closing parenthesis. If
512dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
513dnl IF-MATCH is empty then it defines to
514dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
515dnl <REGEX> translated to uppercase.
516AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
517 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
518 if test -f $1; then
519 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
520 status=$?
521 case $status in
522 0)
523 AC_MSG_RESULT([yes])
524 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
525 ;;
526 1)
527 AC_MSG_RESULT([no])
528 $5
529 ;;
530 *)
531 AC_MSG_ERROR([grep exited with status $status])
532 ;;
533 esac
534 else
535 AC_MSG_RESULT([file not found])
536 $5
537 fi
538])
539
064af421
BP		 540dnl OVS_DEFINE(NAME)
541dnl
542dnl Defines NAME to 1 in kcompat.h.
543AC_DEFUN([OVS_DEFINE], [
22bcc0e7 544 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 545])
546
e3438006 547dnl OVS_CHECK_LINUX_COMPAT
064af421 548dnl
8063e095 549dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 550dnl the directory in $KBUILD.
551AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 552 rm -f datapath/linux/kcompat.h.new
553 mkdir -p datapath/linux
554 : > datapath/linux/kcompat.h.new
4aa13c0c 555
e23775f2
PS		 556 echo '#include <linux/version.h>
557#ifndef RHEL_RELEASE_CODE
558#define RHEL_RELEASE_CODE 0
559#define RHEL_RELEASE_VERSION(a, b) 0
560#endif' >> datapath/linux/kcompat.h.new
561
e3438006 562 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 563 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
564
db1dcb23
DB		 565 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
566 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
567
e23775f2
PS		 568 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
569 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
570 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
571
e3438006 572 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 573 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 574 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 575
8aef057b 576 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 577 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 578 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
579 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 580
d923a695 581 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 582 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 583
e23775f2
PS		 584 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
585 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
586 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 587 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 588 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 589 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 590
e3438006 591 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 592 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 593 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
594 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 595 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
596 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
597
13dd4a97
JS		 598 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
599 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 600 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
601 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 602 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
603 [ip_do_fragment], [net],
604 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 605 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
606 [ip_local_out], [net],
607 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
608
cfda4537 609 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 610
611 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
612 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 613 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 614 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
615 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 616 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
617 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 618 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 619 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 620 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
621 [frags_work])
d1c390e6
JS		 622 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
623 [rwlock])
e0d45da3
JS		 624 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
625 [list_evictor])
38f45380 626 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 627 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
628 [sub_frag_mem_limit], [struct.netns_frags],
629 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
630 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
631 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 632 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
633 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 634
f2252c61
PS		 635 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
636 dnl OVS does not really need ipv6 label field, but its presence signifies that
637 dnl the stack has all required ipv6 support.
638 dnl OVS also does not need dst_cache But this dependency allows us to write
639 dnl much cleaner code.
640
3259c4ff
PS		 641 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
642 [label],
643 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
644 [iptunnel_pull_offloads],
997d327d 645 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 646 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
647 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 648
138df3e5
GR		 649 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
650 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 651 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
652 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 653 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
654 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 655 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 656 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
657 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
658 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 659 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 660 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 661 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 662 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 663 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 664 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
665 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 666 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
667 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 668 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 669 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 670 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
671 dnl So check type of tstats.
672 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
673 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 674 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
675 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 676 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 677 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
678 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
679 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
680 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 681 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 682 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
683 [extended])
7efb1e09
PS		 684 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
685 [netdev_master_upper_dev_link], [upper_priv],
686 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 687 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
688 [netdev_master_upper_dev_link_rh],
689 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
690
6c0bf091
JW		 691 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
692 [max_mtu])
39ca3383
YHW		 693 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
694 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 695 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
696 [dev_change_flags], [extack],
697 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 698
699 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 700 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
701 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 702 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 703 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
704 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 705 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
706 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
707 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
708 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 709 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 710 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 711
0643a78b 712
e4e04c3b 713 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 714 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 715
6d9b6937
JR		 716 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
717 [nf_conn], [struct timer_list[[ \t]]*timeout],
718 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
719 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
720 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
721
71ce9edd
JR		 722 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
723 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 724 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 725 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
726 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 727 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 728 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
729 [nf_ct_set])
56ec5593
JS		 730 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
731 [nf_ct_is_untracked])
c1d728db
YHW		 732 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
733 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 734 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
735 [nf_ct_zone_init])
eca4cde0
YS		 736 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
737 [net_ns_get])
459064e7
JS		 738 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
739 [nf_connlabels_get])
7f2ab8cd
JR		 740 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
741 [nf_connlabels_get], [int bit],
742 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 743 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
744 [nf_conn_labels], [words])
0d330e42
JR		 745 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
746 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 747 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 748 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
749 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 750 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 751 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 752 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
753 [int nf_conncount_add],
754 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 755 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
756 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
757 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
758 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
759 [\(*nf_ct_timeout_find_get_hook\)], [net],
760 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 761
9048ab60
GR		 762 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
763 [prandom_u32[[\(]]],
764 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 765 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 766
e23775f2
PS		 767 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
768 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
769 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
770 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
771 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
772
e3438006
BP		 773 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
774 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 775 [rcu_read_lock_held])])
8fa52250 776 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 777 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 778 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
779 [rtnl_create_link], [extack],
780 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 781 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 782
6a33828d
BP		 783 # Check for the proto_data_valid member in struct sk_buff. The [^@]
784 # is necessary because some versions of this header remove the
785 # member but retain the kerneldoc comment that describes it (which
786 # starts with @). The brackets must be doubled because of m4
787 # quoting rules.
e3438006 788 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 789 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 790 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 791 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 792 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 794 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 796 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
797 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 798 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 799 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 800 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 801 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 802 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
803 [skb_reset_tail_pointer])
e3438006 804 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 805 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 806 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 807 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 808 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 809 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 810 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 811 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 812 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 813 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 814 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
815 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 816 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 817 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
818 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 819 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
820 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 821 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 822 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 823 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 824 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 825 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 826 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 827 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 828 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 829 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 830
e3438006 831 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 832 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 833 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 834 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 835 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
836 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 837
e3438006
BP		 838 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
839 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 840
0d03e51c 841 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 842 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 843
114fce23
SG		 844 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
845 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 846 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 847 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
848 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 849 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 850 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
851 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
f1e9590e 852 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
0643a78b
PS		 853 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
854 [genl_notify], [net],
855 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
856
13dd4a97
JS		 857
858 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
859 [genl_multicast_group], [id])
fdce83a3 860 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 861
cc1d0dea 862 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 863 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 864 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 865 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 866 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 867 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
868 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 869 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
870 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
871
91b37647 872 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 873 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 874 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
875 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
876 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 877 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 878 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 879 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
09c33996 880 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
6dbd98e6
SH		 881 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
882 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 883 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
884 [nla_parse], [netlink_ext_ack],
885 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 886
c4e976db
JG		 887 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
888
1f649f1c 889 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 890 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 891 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 892 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 893 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 894
aadd6ae9
JS		 895 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
896 [metadata_dst_alloc], [metadata_type])
897
09f27436
JG		 898 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
899
3174a818
TG		 900 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
901 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 902 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 903 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
904 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
905 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 906 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 907 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
908 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 909 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
910 [gro_receive])
e23775f2
PS		 911
912 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 913 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
914 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
915 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 916
b7ebebcd
PS		 917 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
918 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 919 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
920 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 921 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
922 [udp_add_offload], [net],
923 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 924 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
925 [nf_defrag_ipv6_enable], [net],
926 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 927 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
928 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 929 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
930 [needs_free_netdev],
931 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 932 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
933 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 934 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 935 [nf_conntrack_helper_put],
936 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
4c941202
YHW		 937 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
938 [nf_nat_helper_try_module_get])
939 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
940 [nf_nat_helper_put])
f90e29c9 941 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 942 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 943 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
944 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 945 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
946 [extack],
947 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 948 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
949 [list],
950 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 951 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
952 [IP_CT_UNTRACKED])
36d3520b
GR		 953 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
954 [netdev_master_upper_dev_link], [extack],
955 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 956 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
957 [__LINUX_COMPILER_TYPES_H],
958 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 959 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
960 [ktime_get_ts64],
961 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 962 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
963 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
964 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 965 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
966 [ktime_get_ns],
967 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 968 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
969 frag_percpu_counter_batch[],
970 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 971 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
972 [null_compute_pseudo],
973 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
974 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
975 [__skb_checksum_convert],
976 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
977 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
978 [max_mtu],
979 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 980 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
981 [erspan_ver],
982 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
983 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
984 [SKB_GSO_IPXIP6],
985 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
986 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
987 [ip6_make_flowlabel], [fl6],
988 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
989 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
990 [auto_flowlabels],
991 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
992 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
993 [netif_keep_dst],
994 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
995 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
996 [ndo_get_iflink],
997 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
998 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
999 [skb_set_inner_ipproto],
1000 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1001 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1002 [tunnel_encap_types],
1003 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1004 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1005 [IFLA_IPTUN_ENCAP_TYPE],
1006 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1007 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1008 [IFLA_IPTUN_COLLECT_METADATA],
1009 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 1010 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1011 [IFLA_GRE_ENCAP_DPORT])
1012 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1013 [IFLA_GRE_COLLECT_METADATA])
1014 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1015 [IFLA_GRE_IGNORE_DF])
1016 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1017 [IFLA_GRE_FWMARK])
1018 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1019 [IFLA_GRE_ERSPAN_INDEX])
1020 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1021 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 1022 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1023 [IFLA_IPTUN_FWMARK])
10f24236
GR		 1024 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1025 [csum_valid],
1026 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 1027 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1028 [vlan_present],
1029 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 1030 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1031 [skb_checksum_simple_validate])
44a629b5
GR		 1032 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1033 [void.*ndo_get_stats64],
1034 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 1035 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1036 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1037 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1038 [ip_tunnel_info_opts_set], [flags],
1039 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1040 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1041 [rnd],
1042 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1043 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1044 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1045 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1046 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1047 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1048 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1049 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1050 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1051 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1052 [nf_conntrack_l3proto],
1053 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1054 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1055 [nf_conntrack_in], [nf_hook_state],
1056 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1057 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1058 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1059 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1060 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1061 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1062 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1063 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1064 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1065 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1066 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1067 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
21a719d6 1068
22bcc0e7
JG		 1069 if cmp -s datapath/linux/kcompat.h.new \
1070 datapath/linux/kcompat.h >/dev/null 2>&1; then
1071 rm datapath/linux/kcompat.h.new
064af421 1072 else
22bcc0e7 1073 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1074 fi
1075])
1076
f6eb6b20 1077dnl Checks for net/if_dl.h.
d30e714c 1078dnl
d23fa2ed
YT		 1079dnl (We use this as a proxy for checking whether we're building on FreeBSD
1080dnl or NetBSD.)
9360d9b7
EM		 1081AC_DEFUN([OVS_CHECK_IF_DL],
1082 [AC_CHECK_HEADER([net/if_dl.h],
1083 [HAVE_IF_DL=yes],
1084 [HAVE_IF_DL=no])
1085 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1086 if test "$HAVE_IF_DL" = yes; then
1087 AC_DEFINE([HAVE_IF_DL], [1],
1088 [Define to 1 if net/if_dl.h is available.])
d30e714c 1089
d23fa2ed 1090 # On these platforms we use libpcap to access network devices.
d30e714c 1091 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1092 fi])
1093
e50097d2
BP		 1094dnl Checks for buggy strtok_r.
1095dnl
1096dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1097dnl with optimization that can cause segfaults:
1098dnl
1099dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1100AC_DEFUN([OVS_CHECK_STRTOK_R],
1101 [AC_CACHE_CHECK(
1102 [whether strtok_r macro segfaults on some inputs],
1103 [ovs_cv_strtok_r_bug],
1104 [AC_RUN_IFELSE(
1105 [AC_LANG_PROGRAM([#include <stdio.h>
1106 #include <string.h>
1107 ],
416e7132
BP		 1108 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1109 /* Assume bug is present, because relatively minor
1110 changes in compiler settings (e.g. optimization
1111 level) can make it crop up. */
1112 return 1;
1113 #else
1114 char string[] = ":::";
e50097d2
BP		 1115 char *save_ptr = (char *) 0xc0ffee;
1116 char *token1, *token2;
1117 token1 = strtok_r(string, ":", &save_ptr);
1118 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1119 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1120 printf ("%s %s\n", token1, token2);
1121 return 0;
416e7132 1122 #endif
e50097d2
BP		 1123 ]])],
1124 [ovs_cv_strtok_r_bug=no],
1125 [ovs_cv_strtok_r_bug=yes],
1126 [ovs_cv_strtok_r_bug=yes])])
1127 if test $ovs_cv_strtok_r_bug = yes; then
1128 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1129 [Define if strtok_r macro segfaults on some inputs])
1130 fi
1131])
1132
064af421
BP		 1133dnl ----------------------------------------------------------------------
1134dnl These macros are from GNU PSPP, with the following original license:
1135dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1136dnl This file is free software; the Free Software Foundation
1137dnl gives unlimited permission to copy and/or distribute it,
1138dnl with or without modifications, as long as this notice is preserved.
1139
50194820 1140AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1141 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1142 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1143 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1144 dnl Include -Werror in the compiler options, because without -Werror
1145 dnl clang's GCC-compatible compiler driver does not return a failure
1146 dnl exit status even though it complains about options it does not
1147 dnl understand.
c2deac54
YT		 1148 dnl
1149 dnl Also, check stderr as gcc exits with status 0 for options
1150 dnl rejected at getopt level.
1151 dnl % touch /tmp/a.c
1152 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1153 dnl gcc: unrecognized option '-Qunused-arguments'
1154 dnl 0
1155 dnl %
4c1e8cb9
BP		 1156 dnl
1157 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1158 dnl it does not understand, unless it has another error to report, so
1159 dnl instead of testing for -Wno-<foo>, test for the positive version.
1160 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1161 AC_COMPILE_IFELSE(
1162 [AC_LANG_SOURCE([int x;])],
1163 [if test -s conftest.err && grep "unrecognized option" conftest.err
1164 then
1165 ovs_cv_name[]=no
1166 else
1167 ovs_cv_name[]=yes
1168 fi],
1169 [ovs_cv_name[]=no])
064af421
BP		 1170 CFLAGS="$ovs_save_CFLAGS"])
1171 if test $ovs_cv_name = yes; then
83f6c050 1172 m4_if([$2], [], [:], [$2])
064af421
BP		 1173 else
1174 m4_if([$3], [], [:], [$3])
1175 fi
1176])
1177
50194820
BP		 1178dnl OVS_CHECK_WERROR
1179dnl
1180dnl Check whether the C compiler accepts -Werror.
1181dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1182AC_DEFUN([OVS_CHECK_WERROR],
1183 [WERROR=
1184 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1185
1186dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1187dnl Check whether the given C compiler OPTION is accepted.
1188dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1189AC_DEFUN([OVS_CHECK_CC_OPTION],
1190 [AC_REQUIRE([OVS_CHECK_WERROR])
1191 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1192
064af421
BP		 1193dnl OVS_ENABLE_OPTION([OPTION])
1194dnl Check whether the given C compiler OPTION is accepted.
d161c099 1195dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1196dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1197AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1198 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1199 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1200
1201dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1202dnl Check whether the given C compiler OPTION is accepted.
1203dnl If so, enable the given Automake CONDITIONAL.
1204
1205dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1206AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1207 [OVS_CHECK_CC_OPTION(
1208 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1209 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1210dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1211
1212dnl Check for too-old XenServer.
1213AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1214 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1215 [if test -e /etc/redhat-release; then
1216 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1217 fi
1218 if test -z "$ovs_cv_xsversion"; then
1219 ovs_cv_xsversion=none
1220 fi])
1221 case $ovs_cv_xsversion in
1222 none)
1223 ;;
1224
1225 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1226 [[6-9]]* | dnl XenServer 6 or later
1227 5.[[7-9]]* | dnl XenServer 5.7 or later
1228 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1229 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1230 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1231 ;;
1232
1233 *)
1234 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1235 ;;
1236 esac])
29d935d6 1237
643c0c34
BP		 1238dnl OVS_CHECK_SPARSE_TARGET
1239dnl
1240dnl The "cgcc" script from "sparse" isn't very good at detecting the
1241dnl target for which the code is being built. This helps it out.
1242AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1243 [AC_CACHE_CHECK(
1244 [target hint for cgcc],
1245 [ac_cv_sparse_target],
1246 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1247 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1248 [x86_64-*], [ac_cv_sparse_target=x86_64],
1249 [ac_cv_sparse_target=other])])
1250 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1251 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1252 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1253 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1254
e5273084 1255 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1256 dnl allow "sparse" correctly check the same code that will be built.
1257 dnl Required for checking DPDK headers.
1258 AC_MSG_CHECKING([vector options for cgcc])
1259 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1260 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1261 AC_MSG_RESULT([$VECTOR])
1262 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1263
643c0c34
BP		 1264 AC_SUBST([SPARSEFLAGS])
1265 AC_SUBST([CGCCFLAGS])])
1266
32e96ab7
AZ		 1267dnl OVS_SPARSE_EXTRA_INCLUDES
1268dnl
1269dnl The cgcc script from "sparse" does not search gcc's default
1270dnl search path. Get the default search path from GCC and pass
1271dnl them to sparse.
1272AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1273 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1274 [`$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 ' ' `] ))
1275
29d935d6
BP		 1276dnl OVS_ENABLE_SPARSE
1277AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1278 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1279 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1280 : ${SPARSE=sparse}
1281 AC_SUBST([SPARSE])
1282 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1283 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1284
1285 AC_ARG_ENABLE(
1286 [sparse],
1287 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1288 [], [enable_sparse=no])
1289 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1290
0eaaacac
FL		 1291dnl OVS_CTAGS_IDENTIFIERS
1292dnl
1293dnl ctags ignores symbols with extras identifiers. This builds a list of
1294dnl specially handled identifiers to be ignored.
1295AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1296 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1297 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1298
8a8cd0ac
BP		 1299dnl OVS_PTHREAD_SET_NAME
1300dnl
1301dnl This checks for three known variants of pthreads functions for setting
1302dnl the name of the current thread:
1303dnl
1304dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1305dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1306dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1307dnl
1308dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1309dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1310dnl provide to it.
1311dnl
1312dnl This macro defines:
1313dnl
1314dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1315dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1316dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1317AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1318 [AC_CHECK_FUNCS([pthread_set_name_np])
1319 if test $ac_cv_func_pthread_set_name_np != yes; then
1320 AC_CACHE_CHECK(
1321 [for pthread_setname_np() variant],
1322 [ovs_cv_pthread_setname_np],
1323 [AC_LINK_IFELSE(
a0903134 1324 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1325 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1326 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1327 [AC_LINK_IFELSE(
a0903134 1328 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1329], [pthread_setname_np(pthread_self(), "%s", "name");])],
1330 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1331 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1332 case $ovs_cv_pthread_setname_np in # (
1333 glibc)
a0903134
YT		 1334 AC_DEFINE(
1335 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1336 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1337 ;; # (
8a8cd0ac 1338 netbsd)
a0903134
YT		 1339 AC_DEFINE(
1340 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1341 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1342 ;;
8a8cd0ac
BP		 1343 esac
1344 fi])
5020f5f0
BP		 1345
1346dnl OVS_CHECK_LINUX_HOST.
1347dnl
1348dnl Checks whether we're building for a Linux host, based on the presence of
1349dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1350dnl LINUX based on the result.
1351AC_DEFUN([OVS_CHECK_LINUX_HOST],
1352 [AC_CACHE_CHECK(
1353 [whether __linux__ is defined],
1354 [ovs_cv_linux],
1355 [AC_COMPILE_IFELSE(
1356 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1357 [ovs_cv_linux=true],
1358 [ovs_cv_linux=false])])
1359 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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