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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
e90e115a
HH		 17dnl Set OVS DPCLS Autovalidator as default subtable search at compile time?
18dnl This enables automatically running all unit tests with all DPCLS
19dnl implementations.
20AC_DEFUN([OVS_CHECK_DPCLS_AUTOVALIDATOR], [
21 AC_ARG_ENABLE([autovalidator],
22 [AC_HELP_STRING([--enable-autovalidator], [Enable DPCLS autovalidator as default subtable search implementation.])],
23 [autovalidator=yes],[autovalidator=no])
24 AC_MSG_CHECKING([whether DPCLS Autovalidator is default implementation])
25 if test "$autovalidator" != yes; then
26 AC_MSG_RESULT([no])
27 else
28 OVS_CFLAGS="$OVS_CFLAGS -DDPCLS_AUTOVALIDATOR_DEFAULT"
29 AC_MSG_RESULT([yes])
30 fi
31])
32
a64e37a1
BP		 33dnl OVS_ENABLE_WERROR
34AC_DEFUN([OVS_ENABLE_WERROR],
35 [AC_ARG_ENABLE(
36 [Werror],
37 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
38 [], [enable_Werror=no])
39 AC_CONFIG_COMMANDS_PRE(
40 [if test "X$enable_Werror" = Xyes; then
95626395 41 OVS_CFLAGS="$OVS_CFLAGS -Werror"
308bf988
BP		 42 fi])
43
44 # Unless --enable-Werror is specified, report but do not fail the build
45 # for errors reported by flake8.
46 if test "X$enable_Werror" = Xyes; then
47 FLAKE8_WERROR=
48 else
49 FLAKE8_WERROR=-
50 fi
df265086
BP		 51 AC_SUBST([FLAKE8_WERROR])
52
53 # If --enable-Werror is specified, fail the build on sparse warnings.
54 if test "X$enable_Werror" = Xyes; then
55 SPARSE_WERROR=-Wsparse-error
56 else
57 SPARSE_WERROR=
58 fi
59 AC_SUBST([SPARSE_WERROR])])
a64e37a1 60
e3438006 61dnl OVS_CHECK_LINUX
064af421 62dnl
997d327d 63dnl Configure linux kernel source tree
e3438006 64AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 65 AC_ARG_WITH([linux],
66 [AC_HELP_STRING([--with-linux=/path/to/linux],
67 [Specify the Linux kernel build directory])])
68 AC_ARG_WITH([linux-source],
69 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
70 [Specify the Linux kernel source directory
a0903134
YT		 71 (usually figured out automatically from build
72 directory)])])
8a2d6596
BP		 73
74 # Deprecated equivalents to --with-linux, --with-linux-source.
75 AC_ARG_WITH([l26])
76 AC_ARG_WITH([l26-source])
77
78 if test X"$with_linux" != X; then
79 KBUILD=$with_linux
80 elif test X"$with_l26" != X; then
81 KBUILD=$with_l26
82 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
83 else
84 KBUILD=
85 fi
86
87 if test X"$KBUILD" != X; then
88 if test X"$with_linux_source" != X; then
89 KSRC=$with_linux_source
90 elif test X"$with_l26_source" != X; then
91 KSRC=$with_l26_source
92 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 93 else
94 KSRC=
8a2d6596
BP		 95 fi
96 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
97 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
98 fi
99
e3438006
BP		 100 if test -n "$KBUILD"; then
101 KBUILD=`eval echo "$KBUILD"`
102 case $KBUILD in
0b6d72fc 103 /*) ;;
e3438006 104 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 105 esac
064af421 106
7c9e113b
BP		 107 # The build directory is what the user provided.
108 # Make sure that it exists.
8a2d6596 109 AC_MSG_CHECKING([for Linux build directory])
e3438006 110 if test -d "$KBUILD"; then
a0903134
YT		 111 AC_MSG_RESULT([$KBUILD])
112 AC_SUBST(KBUILD)
064af421 113 else
a0903134
YT		 114 AC_MSG_RESULT([no])
115 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 116 fi
117
7c9e113b 118 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 119 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 120 # Use heuristics to find the source headers.
8a2d6596 121 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 122 if test -n "$KSRC"; then
123 KSRC=`eval echo "$KSRC"`
124 case $KSRC in
f5fb5de6 125 /*) ;;
e3438006 126 *) KSRC=`pwd`/$KSRC ;;
b57f675c 127 esac
e3438006 128 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 129 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 130 fi
131 else
e3438006
BP		 132 KSRC=$KBUILD
133 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 134 # Debian kernel build Makefiles tend to include a line of the form:
135 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
136 # First try to extract the source directory from this line.
137 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
138 if test ! -e "$KSRC"/include/linux/kernel.h; then
139 # Didn't work. Fall back to name-based heuristics that used to work.
140 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
141 */build)
142 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
143 ;; # (
144 *)
145 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
146 ;;
147 esac
148 fi
f5fb5de6 149 fi
fe0731b1 150 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 151 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 152 fi
153 fi
e3438006 154 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 155
156 AC_MSG_CHECKING([for kernel version])
71fe9970 157 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 158 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
159 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 160 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 161 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 162 elif test X"$sublevel" = X; then
163 kversion=$version.$patchlevel
164 else
165 kversion=$version.$patchlevel.$sublevel
7c9e113b 166 fi
71fe9970
BP		 167 AC_MSG_RESULT([$kversion])
168
2adada0e 169 if test "$version" -ge 5; then
ea58abe5 170 if test "$version" = 5 && test "$patchlevel" -le 5; then
2adada0e 171 : # Linux 5.x
d76aabea 172 else
ea58abe5 173 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.5.x is not supported (please refer to the FAQ for advice)])
d76aabea 174 fi
2adada0e
YS		 175 elif test "$version" = 4; then
176 : # Linux 4.x
8063e095 177 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 178 : # Linux 3.x
71fe9970 179 else
8063e095 180 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 181 fi
2520f452
IY		 182 if (test ! -e "$KBUILD"/include/linux/version.h && \
183 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 184 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
185 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 186 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 187 fi
e3438006 188 OVS_CHECK_LINUX_COMPAT
064af421 189 fi
e3438006 190 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 191])
192
292d5bd9
VB		 193dnl OVS_CHECK_LINUX_NETLINK
194dnl
195dnl Configure Linux netlink compat.
196AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [
197 AC_COMPILE_IFELSE([
198 AC_LANG_PROGRAM([#include <linux/netlink.h>], [
199 struct nla_bitfield32 x = { 0 };
200 ])],
201 [AC_DEFINE([HAVE_NLA_BITFIELD32], [1],
202 [Define to 1 if struct nla_bitfield32 is available.])])
203])
204
1dc0da67
PB		 205dnl OVS_CHECK_LINUX_TC
206dnl
207dnl Configure Linux tc compat.
208AC_DEFUN([OVS_CHECK_LINUX_TC], [
209 AC_COMPILE_IFELSE([
210 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
292d5bd9 211 int x = TCA_ACT_FLAGS;
1dc0da67 212 ])],
292d5bd9
VB		 213 [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1],
214 [Define to 1 if TCA_ACT_FLAGS is available.])])
1dc0da67 215
c0a1df2e
RD		 216 AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>])
217
1dc0da67
PB		 218 AC_COMPILE_IFELSE([
219 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
220 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
221 ])],
222 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 223 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67 224
abef7959
JH		 225 AC_COMPILE_IFELSE([
226 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
227 int x = TCA_MPLS_TTL;
228 ])],
229 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
230 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
231
1dc0da67
PB		 232 AC_COMPILE_IFELSE([
233 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 234 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 235 ])],
4b12e454
OG		 236 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
237 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 238
239 AC_COMPILE_IFELSE([
240 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
241 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
242 ])],
243 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 244 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH		 245
246 AC_COMPILE_IFELSE([
247 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
248 int x = TCA_SKBEDIT_FLAGS;
249 ])],
250 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
251 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB		 252])
253
8c7130da
AC		 254dnl OVS_CHECK_LINUX_SCTP_CT
255dnl
256dnl Checks for kernels which need additional SCTP state
257AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
258 AC_COMPILE_IFELSE([
259 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
260#include <linux/netfilter/nfnetlink_conntrack.h>
261#include <linux/netfilter/nf_conntrack_common.h>
262#include <linux/netfilter/nf_conntrack_sctp.h>], [
263 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
264 ])],
265 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
266 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
267])
268
fd4d4777
YHW		 269dnl OVS_CHECK_LINUX_VIRTIO_TYPES
270dnl
271dnl Checks for kernels that need virtio_types definition.
272AC_DEFUN([OVS_CHECK_LINUX_VIRTIO_TYPES], [
273 AC_COMPILE_IFELSE([
274 AC_LANG_PROGRAM([#include <linux/virtio_types.h>], [
275 __virtio16 x = 0;
276 ])],
277 [AC_DEFINE([HAVE_VIRTIO_TYPES], [1],
278 [Define to 1 if __virtio16 is available.])])
279])
280
f0d1ead8
IM		 281dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
282dnl
283dnl Check for a function in a library list.
284AC_DEFUN([OVS_FIND_DEPENDENCY], [
285 AC_SEARCH_LIBS([$1], [$2], [], [
286 AC_MSG_ERROR([unable to find $3, install the dependency package])
287 ])
288])
289
0de1b425
WT		 290dnl OVS_CHECK_LINUX_AF_XDP
291dnl
292dnl Check both Linux kernel AF_XDP and libbpf support
293AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
294 AC_ARG_ENABLE([afxdp],
295 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
296 [], [enable_afxdp=no])
297 AC_MSG_CHECKING([whether AF_XDP is enabled])
298 if test "$enable_afxdp" != yes; then
299 AC_MSG_RESULT([no])
300 AF_XDP_ENABLE=false
301 else
302 AC_MSG_RESULT([yes])
303 AF_XDP_ENABLE=true
304
305 AC_CHECK_HEADER([bpf/libbpf.h], [],
306 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
307
308 AC_CHECK_HEADER([linux/if_xdp.h], [],
309 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
310
311 AC_CHECK_HEADER([bpf/xsk.h], [],
312 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
313
314 AC_CHECK_FUNCS([pthread_spin_lock], [],
315 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
316
e8568993
YHW		 317 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
318
0de1b425
WT		 319 AC_DEFINE([HAVE_AF_XDP], [1],
320 [Define to 1 if AF_XDP support is available and enabled.])
321 LIBBPF_LDADD=" -lbpf -lelf"
322 AC_SUBST([LIBBPF_LDADD])
e50547b5
WT		 323
324 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
325 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
326 [XDP need wakeup support detected in xsk.h.])
327 ], [], [[#include <bpf/xsk.h>]])
0de1b425
WT		 328 fi
329 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
330])
331
8a9562d2
PS		 332dnl OVS_CHECK_DPDK
333dnl
334dnl Configure DPDK source tree
335AC_DEFUN([OVS_CHECK_DPDK], [
336 AC_ARG_WITH([dpdk],
337 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 338 [Specify the DPDK build directory])],
339 [have_dpdk=true])
8a9562d2 340
49df3c0f 341 AC_MSG_CHECKING([whether dpdk is enabled])
4c16ee48 342 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 343 AC_MSG_RESULT([no])
344 DPDKLIB_FOUND=false
345 else
346 AC_MSG_RESULT([yes])
347 case "$with_dpdk" in
348 yes)
349 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 350 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
351 DPDK_INCLUDE="$DPDK_CFLAGS"
352 DPDK_LIB="$DPDK_LIBS"], [
353 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
354 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 355 ;;
356 *)
357 DPDK_AUTO_DISCOVER="false"
96195c09 358 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 359 # If 'with_dpdk' is passed install directory, point to headers
360 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 361 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
362 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
363 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
364 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 365 fi
40b5ea86 366 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 367 DPDK_LIB="-ldpdk"
40b5ea86
BB		 368 ;;
369 esac
8a9562d2 370
95626395
TG		 371 ovs_save_CFLAGS="$CFLAGS"
372 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 373 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 374 if test "$DPDK_AUTO_DISCOVER" = "false"; then
375 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
376 fi
377
865cee2b
IM		 378 AC_CHECK_HEADERS([rte_config.h], [], [
379 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
380 ], [AC_INCLUDES_DEFAULT])
381
f0d1ead8
IM		 382 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
383 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
384 ], [], [[#include <rte_config.h>]])
4b88d678 385
976c452a
CL		 386 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
387 OVS_FIND_DEPENDENCY([pcap_dump_close], [pcap], [libpcap])
388 ], [], [[#include <rte_config.h>]])
389
5bb068a7
CL		 390 AC_CHECK_DECL([RTE_LIBRTE_PMD_AF_XDP], [
391 LIBBPF_LDADD="-lbpf"
392 ], [], [[#include <rte_config.h>]])
393
f0d1ead8
IM		 394 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
395 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
396 ], [], [[#include <rte_config.h>]])
fc3b425f 397
f0d1ead8 398 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
b926f577 399 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 400 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
401 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
402 ], [[#include <rte_config.h>]])
403 ], [], [[#include <rte_config.h>]])
84844e3f 404
f0d1ead8 405 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
b926f577 406 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 407 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
408 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
409 ], [[#include <rte_config.h>]])
410 ], [], [[#include <rte_config.h>]])
939bad9a 411
e2f37511
IM		 412 # DPDK uses dlopen to load plugins.
413 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
414
415 AC_MSG_CHECKING([whether linking with dpdk works])
416 LIBS="$DPDK_LIB $LIBS"
417 AC_LINK_IFELSE(
418 [AC_LANG_PROGRAM([#include <rte_config.h>
419 #include <rte_eal.h>],
420 [int rte_argc; char ** rte_argv;
421 rte_eal_init(rte_argc, rte_argv);])],
422 [AC_MSG_RESULT([yes])
423 DPDKLIB_FOUND=true],
424 [AC_MSG_RESULT([no])
425 if test "$DPDK_AUTO_DISCOVER" = "true"; then
426 AC_MSG_ERROR(m4_normalize([
427 Could not find DPDK library in default search path, Use --with-dpdk
428 to specify the DPDK library installed in non-standard location]))
429 else
430 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
431 fi
432 ])
c1223b11 433
95626395
TG		 434 CFLAGS="$ovs_save_CFLAGS"
435 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 436 if test "$DPDK_AUTO_DISCOVER" = "false"; then
437 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
438 fi
96195c09 439 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 440 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 441
3c94676c 442 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 443 #
444 # This happens because the rest of the DPDK code doesn't use any symbol in
445 # the pmd driver objects, and the drivers register themselves using an
446 # __attribute__((constructor)) function.
447 #
448 # These options are specified inside a single -Wl directive to prevent
449 # autotools from reordering them.
5b5aa2d8
CE		 450 #
451 # OTOH newer versions of dpdk pkg-config (generated with Meson)
452 # will already have flagged just the right set of libs with
453 # --whole-archive - in those cases do not wrap it once more.
454 case "$DPDK_LIB" in
455 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
456 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
457 esac
9475dfeb 458 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 459 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 460 fi
461
40b5ea86 462 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 463])
464
8828e5c7 465dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 466dnl
467dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 468dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
469dnl <REGEX> translated to uppercase.
064af421
BP		 470AC_DEFUN([OVS_GREP_IFELSE], [
471 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 472 if test -f $1; then
473 grep '$2' $1 >/dev/null 2>&1
474 status=$?
475 case $status in
997d327d 476 0)
7507ec48 477 AC_MSG_RESULT([yes])
8828e5c7 478 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 479 ;;
997d327d 480 1)
7507ec48
JG		 481 AC_MSG_RESULT([no])
482 $4
483 ;;
997d327d 484 *)
7507ec48
JG		 485 AC_MSG_ERROR([grep exited with status $status])
486 ;;
487 esac
488 else
489 AC_MSG_RESULT([file not found])
490 $4
491 fi
064af421
BP		 492])
493
13dd4a97
JS		 494dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
495dnl
496dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
497dnl structure definition. If this is successful, runs IF-MATCH, otherwise
498dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
499dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
500dnl translated to uppercase.
501AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
502 AC_MSG_CHECKING([whether $2 has member $3 in $1])
503 if test -f $1; then
83a27884 504 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 505 status=$?
506 case $status in
507 0)
508 AC_MSG_RESULT([yes])
509 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
510 ;;
511 1)
512 AC_MSG_RESULT([no])
513 $5
514 ;;
515 *)
516 AC_MSG_ERROR([grep exited with status $status])
517 ;;
518 esac
519 else
520 AC_MSG_RESULT([file not found])
521 $5
522 fi
523])
524
71ce9edd
JR		 525dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
526dnl
527dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
528dnl the function signature starting from the line matching FUNCTION
529dnl and ending with the line containing the closing parenthesis. If
530dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
531dnl IF-MATCH is empty then it defines to
532dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
533dnl <REGEX> translated to uppercase.
534AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
535 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
536 if test -f $1; then
537 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
538 status=$?
539 case $status in
540 0)
541 AC_MSG_RESULT([yes])
542 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
543 ;;
544 1)
545 AC_MSG_RESULT([no])
546 $5
547 ;;
548 *)
549 AC_MSG_ERROR([grep exited with status $status])
550 ;;
551 esac
552 else
553 AC_MSG_RESULT([file not found])
554 $5
555 fi
556])
557
82b7e6d1
GR		 558dnl OVS_FIND_OP_PARAM_IFELSE(FILE, OP, REGEX, [IF-MATCH], [IF-NO-MATCH])
559dnl
560dnl Looks for OP in FILE. If it is found, greps for REGEX within the
561dnl OP definition. If this is successful, runs IF-MATCH, otherwise
562dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
563dnl OVS_DEFINE(HAVE_<OP>_WITH_<REGEX>), with <OP> and <REGEX>
564dnl translated to uppercase.
565AC_DEFUN([OVS_FIND_OP_PARAM_IFELSE], [
566 AC_MSG_CHECKING([whether $2 has member $3 in $1])
567 if test -f $1; then
568 awk '/$2[[ \t\n]]*\)\(/,/;/' $1 2>/dev/null | grep '$3' >/dev/null
569 status=$?
570 case $status in
571 0)
572 AC_MSG_RESULT([yes])
573 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
574 ;;
575 1)
576 AC_MSG_RESULT([no])
577 $5
578 ;;
579 *)
580 AC_MSG_ERROR([grep exited with status $status])
581 ;;
582 esac
583 else
584 AC_MSG_RESULT([file not found])
585 $5
586 fi
587])
588
064af421
BP		 589dnl OVS_DEFINE(NAME)
590dnl
591dnl Defines NAME to 1 in kcompat.h.
592AC_DEFUN([OVS_DEFINE], [
22bcc0e7 593 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 594])
595
e3438006 596dnl OVS_CHECK_LINUX_COMPAT
064af421 597dnl
8063e095 598dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 599dnl the directory in $KBUILD.
600AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 601 rm -f datapath/linux/kcompat.h.new
602 mkdir -p datapath/linux
603 : > datapath/linux/kcompat.h.new
4aa13c0c 604
e23775f2
PS		 605 echo '#include <linux/version.h>
606#ifndef RHEL_RELEASE_CODE
607#define RHEL_RELEASE_CODE 0
608#define RHEL_RELEASE_VERSION(a, b) 0
609#endif' >> datapath/linux/kcompat.h.new
610
e3438006 611 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 612 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
613
db1dcb23
DB		 614 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
615 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
616
33f9c873
GR		 617 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub],
618 [dst_entry])
e23775f2
PS		 619 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
620 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
5519e384
YHW		 621 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow.*net],
622 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_FLOW_NET])])
e23775f2 623 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
5519e384 624 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow])
e23775f2 625
e3438006 626 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 627 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 628 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 629
8aef057b 630 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 631 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 632 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
633 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
dca96842
PB		 634 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h],
635 [DECLARE_STATIC_KEY_FALSE],
636 [OVS_DEFINE([HAVE_DECLARE_STATIC_KEY])])
6660a959 637
d923a695 638 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 639 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 640
e23775f2
PS		 641 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
642 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
643 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 644 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 645 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 646 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 647
e3438006 648 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 649 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 650 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
651 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 652 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
653 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
654
13dd4a97
JS		 655 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
656 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 657 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
658 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 659 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
660 [ip_do_fragment], [net],
661 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 662 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
663 [ip_local_out], [net],
664 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
665
cfda4537 666 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 667
668 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
669 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 670 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 671 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
672 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 673 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
674 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 675 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 676 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 677 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
678 [frags_work])
d1c390e6
JS		 679 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
680 [rwlock])
e0d45da3
JS		 681 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
682 [list_evictor])
38f45380 683 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 684 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
685 [sub_frag_mem_limit], [struct.netns_frags],
686 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
687 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
688 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 689 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
690 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 691
f2252c61
PS		 692 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
693 dnl OVS does not really need ipv6 label field, but its presence signifies that
694 dnl the stack has all required ipv6 support.
695 dnl OVS also does not need dst_cache But this dependency allows us to write
696 dnl much cleaner code.
697
3259c4ff
PS		 698 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
699 [label],
700 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
701 [iptunnel_pull_offloads],
997d327d 702 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 703 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
704 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 705
138df3e5
GR		 706 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
707 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 708 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
709 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 710 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
711 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 712 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 713 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
714 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
715 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 716 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 717 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 718 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 719 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 720 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 721 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
722 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 723 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
724 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 725 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 726 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 727 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
728 dnl So check type of tstats.
729 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
730 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 731 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
732 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 733 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 734 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
735 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
736 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
737 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 738 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 739 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
740 [extended])
7efb1e09
PS		 741 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
742 [netdev_master_upper_dev_link], [upper_priv],
743 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 744 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
745 [netdev_master_upper_dev_link_rh],
746 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
747
6c0bf091
JW		 748 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
749 [max_mtu])
39ca3383
YHW		 750 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
751 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 752 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
753 [dev_change_flags], [extack],
754 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 755
756 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 757 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
758 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 759 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 760 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
761 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 762 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
763 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
764 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
765 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 766 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 767 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 768
0643a78b 769
e4e04c3b 770 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 771 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 772
6d9b6937
JR		 773 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
774 [nf_conn], [struct timer_list[[ \t]]*timeout],
775 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
776 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
777 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
778
71ce9edd
JR		 779 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
780 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 781 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 782 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
783 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 784 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 785 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
786 [nf_ct_set])
56ec5593
JS		 787 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
788 [nf_ct_is_untracked])
c1d728db
YHW		 789 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
790 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 791 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
792 [nf_ct_zone_init])
eca4cde0
YS		 793 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
794 [net_ns_get])
459064e7
JS		 795 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
796 [nf_connlabels_get])
7f2ab8cd
JR		 797 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
798 [nf_connlabels_get], [int bit],
799 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 800 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
801 [nf_conn_labels], [words])
0d330e42
JR		 802 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
803 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 804 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 805 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
806 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 807 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 808 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 809 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
810 [int nf_conncount_add],
811 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 812 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
813 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
814 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
815 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
816 [\(*nf_ct_timeout_find_get_hook\)], [net],
817 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 818
9048ab60
GR		 819 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
820 [prandom_u32[[\(]]],
821 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 822 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
b8d42f87
IM		 823 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h],
824 [prandom_u32[[\(]]],
825 [OVS_DEFINE([HAVE_PRANDOM_U32])])
826 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h], [prandom_u32_max])
4aa13c0c 827
e23775f2
PS		 828 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
829 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
830 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
831 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
832 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
833
e3438006
BP		 834 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
835 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 836 [rcu_read_lock_held])])
8fa52250 837 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 838 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 839 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
840 [rtnl_create_link], [extack],
841 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 842 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 843
6a33828d
BP		 844 # Check for the proto_data_valid member in struct sk_buff. The [^@]
845 # is necessary because some versions of this header remove the
846 # member but retain the kerneldoc comment that describes it (which
847 # starts with @). The brackets must be doubled because of m4
848 # quoting rules.
e3438006 849 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 850 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 851 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 853 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 854 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 855 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 856 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 857 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
858 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 859 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 860 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 861 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 862 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
864 [skb_reset_tail_pointer])
e3438006 865 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 866 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 867 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 868 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 869 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 870 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 871 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 872 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 873 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 874 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
876 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 877 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 878 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
879 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 880 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
881 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 882 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 884 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 885 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 886 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 887 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 888 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 889 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 890 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 891
e3438006 892 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 893 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 894 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
895 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 896
e3438006
BP		 897 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
898 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 899
0d03e51c 900 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 901 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 902
114fce23
SG		 903 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
904 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 905 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 906 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
907 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 908 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 909 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
910 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
f1e9590e 911 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
0643a78b
PS		 912 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
913 [genl_notify], [net],
914 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
915
13dd4a97
JS		 916
917 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
918 [genl_multicast_group], [id])
fdce83a3 919 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 920
cc1d0dea 921 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 922 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 923 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 924 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 925 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 926 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
927 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 928 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
929 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
930
91b37647 931 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 932 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 933 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
934 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
935 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 936 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 937 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 938 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
09c33996 939 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
6dbd98e6
SH		 940 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
941 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 942 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
943 [nla_parse], [netlink_ext_ack],
944 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 945
c4e976db
JG		 946 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
947
1f649f1c 948 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 949 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 950 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 951 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 952 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 953
aadd6ae9
JS		 954 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
955 [metadata_dst_alloc], [metadata_type])
956
09f27436
JG		 957 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
958
3174a818
TG		 959 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
960 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 961 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 962 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
963 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
964 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 965 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 966 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
967 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 968 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
969 [gro_receive])
e23775f2
PS		 970
971 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 972 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
973 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
974 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 975
b7ebebcd
PS		 976 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
977 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 978 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
979 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 980 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
981 [udp_add_offload], [net],
982 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 983 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
984 [nf_defrag_ipv6_enable], [net],
985 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 986 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
987 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 988 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
989 [needs_free_netdev],
990 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 991 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
992 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 993 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 994 [nf_conntrack_helper_put],
995 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
4c941202
YHW		 996 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
997 [nf_nat_helper_try_module_get])
998 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
999 [nf_nat_helper_put])
f90e29c9 1000 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 1001 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 1002 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
1003 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 1004 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
1005 [extack],
1006 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 1007 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
1008 [list],
1009 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 1010 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
1011 [IP_CT_UNTRACKED])
36d3520b
GR		 1012 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
1013 [netdev_master_upper_dev_link], [extack],
1014 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 1015 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
1016 [__LINUX_COMPILER_TYPES_H],
1017 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 1018 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1019 [ktime_get_ts64],
1020 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 1021 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
1022 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
1023 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 1024 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1025 [ktime_get_ns],
1026 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 1027 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
1028 frag_percpu_counter_batch[],
1029 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 1030 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1031 [null_compute_pseudo],
1032 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
1033 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1034 [__skb_checksum_convert],
1035 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
1036 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
1037 [max_mtu],
1038 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 1039 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
1040 [erspan_ver],
1041 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
1042 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1043 [SKB_GSO_IPXIP6],
1044 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
1045 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
1046 [ip6_make_flowlabel], [fl6],
1047 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1048 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1049 [auto_flowlabels],
1050 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1051 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1052 [netif_keep_dst],
1053 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1054 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1055 [ndo_get_iflink],
1056 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1057 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1058 [skb_set_inner_ipproto],
1059 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1060 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1061 [tunnel_encap_types],
1062 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1063 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1064 [IFLA_IPTUN_ENCAP_TYPE],
1065 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1066 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1067 [IFLA_IPTUN_COLLECT_METADATA],
1068 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 1069 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1070 [IFLA_GRE_ENCAP_DPORT])
1071 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1072 [IFLA_GRE_COLLECT_METADATA])
1073 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1074 [IFLA_GRE_IGNORE_DF])
1075 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1076 [IFLA_GRE_FWMARK])
1077 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1078 [IFLA_GRE_ERSPAN_INDEX])
1079 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1080 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 1081 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1082 [IFLA_IPTUN_FWMARK])
10f24236
GR		 1083 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1084 [csum_valid],
1085 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 1086 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1087 [vlan_present],
1088 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 1089 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1090 [skb_checksum_simple_validate])
44a629b5
GR		 1091 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1092 [void.*ndo_get_stats64],
1093 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 1094 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1095 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1096 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1097 [ip_tunnel_info_opts_set], [flags],
1098 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1099 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1100 [rnd],
1101 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1102 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1103 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1104 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1105 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1106 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1107 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1108 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1109 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1110 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1111 [nf_conntrack_l3proto],
1112 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1113 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1114 [nf_conntrack_in], [nf_hook_state],
1115 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1116 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1117 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1118 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1119 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1120 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1121 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1122 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1123 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1124 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1125 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1126 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
6634cc8a
GR		 1127 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1128 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
f77d85b1
GR		 1129 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1130 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
2ef0f1c2
JB		 1131 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1132 [policy],
1133 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
6db0f72d
JB		 1134 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1135 [nla_parse_deprecated_strict],
1136 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
82b7e6d1
GR		 1137 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1138 [validate], [extack],
1139 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
9ba57fc7
HZ		 1140 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1141 [__skb_set_hash])
1142 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [sw_hash])
1143 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash_raw])
21a719d6 1144
22bcc0e7
JG		 1145 if cmp -s datapath/linux/kcompat.h.new \
1146 datapath/linux/kcompat.h >/dev/null 2>&1; then
1147 rm datapath/linux/kcompat.h.new
064af421 1148 else
22bcc0e7 1149 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1150 fi
1151])
1152
f6eb6b20 1153dnl Checks for net/if_dl.h.
d30e714c 1154dnl
d23fa2ed
YT		 1155dnl (We use this as a proxy for checking whether we're building on FreeBSD
1156dnl or NetBSD.)
9360d9b7
EM		 1157AC_DEFUN([OVS_CHECK_IF_DL],
1158 [AC_CHECK_HEADER([net/if_dl.h],
1159 [HAVE_IF_DL=yes],
1160 [HAVE_IF_DL=no])
1161 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1162 if test "$HAVE_IF_DL" = yes; then
1163 AC_DEFINE([HAVE_IF_DL], [1],
1164 [Define to 1 if net/if_dl.h is available.])
d30e714c 1165
d23fa2ed 1166 # On these platforms we use libpcap to access network devices.
d30e714c 1167 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1168 fi])
1169
e50097d2
BP		 1170dnl Checks for buggy strtok_r.
1171dnl
1172dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1173dnl with optimization that can cause segfaults:
1174dnl
1175dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1176AC_DEFUN([OVS_CHECK_STRTOK_R],
1177 [AC_CACHE_CHECK(
1178 [whether strtok_r macro segfaults on some inputs],
1179 [ovs_cv_strtok_r_bug],
1180 [AC_RUN_IFELSE(
1181 [AC_LANG_PROGRAM([#include <stdio.h>
1182 #include <string.h>
1183 ],
416e7132
BP		 1184 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1185 /* Assume bug is present, because relatively minor
1186 changes in compiler settings (e.g. optimization
1187 level) can make it crop up. */
1188 return 1;
1189 #else
1190 char string[] = ":::";
e50097d2
BP		 1191 char *save_ptr = (char *) 0xc0ffee;
1192 char *token1, *token2;
1193 token1 = strtok_r(string, ":", &save_ptr);
1194 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1195 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1196 printf ("%s %s\n", token1, token2);
1197 return 0;
416e7132 1198 #endif
e50097d2
BP		 1199 ]])],
1200 [ovs_cv_strtok_r_bug=no],
1201 [ovs_cv_strtok_r_bug=yes],
1202 [ovs_cv_strtok_r_bug=yes])])
1203 if test $ovs_cv_strtok_r_bug = yes; then
1204 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1205 [Define if strtok_r macro segfaults on some inputs])
1206 fi
1207])
1208
064af421
BP		 1209dnl ----------------------------------------------------------------------
1210dnl These macros are from GNU PSPP, with the following original license:
1211dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1212dnl This file is free software; the Free Software Foundation
1213dnl gives unlimited permission to copy and/or distribute it,
1214dnl with or without modifications, as long as this notice is preserved.
1215
50194820 1216AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1217 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1218 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1219 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1220 dnl Include -Werror in the compiler options, because without -Werror
1221 dnl clang's GCC-compatible compiler driver does not return a failure
1222 dnl exit status even though it complains about options it does not
1223 dnl understand.
c2deac54
YT		 1224 dnl
1225 dnl Also, check stderr as gcc exits with status 0 for options
1226 dnl rejected at getopt level.
1227 dnl % touch /tmp/a.c
1228 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1229 dnl gcc: unrecognized option '-Qunused-arguments'
1230 dnl 0
1231 dnl %
4c1e8cb9
BP		 1232 dnl
1233 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1234 dnl it does not understand, unless it has another error to report, so
1235 dnl instead of testing for -Wno-<foo>, test for the positive version.
1236 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1237 AC_COMPILE_IFELSE(
1238 [AC_LANG_SOURCE([int x;])],
1239 [if test -s conftest.err && grep "unrecognized option" conftest.err
1240 then
1241 ovs_cv_name[]=no
1242 else
1243 ovs_cv_name[]=yes
1244 fi],
1245 [ovs_cv_name[]=no])
064af421
BP		 1246 CFLAGS="$ovs_save_CFLAGS"])
1247 if test $ovs_cv_name = yes; then
83f6c050 1248 m4_if([$2], [], [:], [$2])
064af421
BP		 1249 else
1250 m4_if([$3], [], [:], [$3])
1251 fi
1252])
1253
50194820
BP		 1254dnl OVS_CHECK_WERROR
1255dnl
1256dnl Check whether the C compiler accepts -Werror.
1257dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1258AC_DEFUN([OVS_CHECK_WERROR],
1259 [WERROR=
1260 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1261
1262dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1263dnl Check whether the given C compiler OPTION is accepted.
1264dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1265AC_DEFUN([OVS_CHECK_CC_OPTION],
1266 [AC_REQUIRE([OVS_CHECK_WERROR])
1267 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1268
064af421
BP		 1269dnl OVS_ENABLE_OPTION([OPTION])
1270dnl Check whether the given C compiler OPTION is accepted.
d161c099 1271dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1272dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1273AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1274 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1275 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1276
1277dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1278dnl Check whether the given C compiler OPTION is accepted.
1279dnl If so, enable the given Automake CONDITIONAL.
1280
1281dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1282AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1283 [OVS_CHECK_CC_OPTION(
1284 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1285 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1286dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1287
1288dnl Check for too-old XenServer.
1289AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1290 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1291 [if test -e /etc/redhat-release; then
1292 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1293 fi
1294 if test -z "$ovs_cv_xsversion"; then
1295 ovs_cv_xsversion=none
1296 fi])
1297 case $ovs_cv_xsversion in
1298 none)
1299 ;;
1300
1301 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1302 [[6-9]]* | dnl XenServer 6 or later
1303 5.[[7-9]]* | dnl XenServer 5.7 or later
1304 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1305 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1306 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1307 ;;
1308
1309 *)
1310 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1311 ;;
1312 esac])
29d935d6 1313
643c0c34
BP		 1314dnl OVS_CHECK_SPARSE_TARGET
1315dnl
1316dnl The "cgcc" script from "sparse" isn't very good at detecting the
1317dnl target for which the code is being built. This helps it out.
1318AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1319 [AC_CACHE_CHECK(
1320 [target hint for cgcc],
1321 [ac_cv_sparse_target],
1322 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1323 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1324 [x86_64-*], [ac_cv_sparse_target=x86_64],
1325 [ac_cv_sparse_target=other])])
1326 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1327 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1328 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1329 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1330
e5273084 1331 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1332 dnl allow "sparse" correctly check the same code that will be built.
1333 dnl Required for checking DPDK headers.
1334 AC_MSG_CHECKING([vector options for cgcc])
1335 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1336 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1337 AC_MSG_RESULT([$VECTOR])
1338 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1339
643c0c34
BP		 1340 AC_SUBST([SPARSEFLAGS])
1341 AC_SUBST([CGCCFLAGS])])
1342
32e96ab7
AZ		 1343dnl OVS_SPARSE_EXTRA_INCLUDES
1344dnl
1345dnl The cgcc script from "sparse" does not search gcc's default
1346dnl search path. Get the default search path from GCC and pass
1347dnl them to sparse.
1348AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1349 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1350 [`$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 ' ' `] ))
1351
29d935d6
BP		 1352dnl OVS_ENABLE_SPARSE
1353AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1354 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1355 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1356 : ${SPARSE=sparse}
1357 AC_SUBST([SPARSE])
1358 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1359 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1360
1361 AC_ARG_ENABLE(
1362 [sparse],
1363 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1364 [], [enable_sparse=no])
1365 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1366
0eaaacac
FL		 1367dnl OVS_CTAGS_IDENTIFIERS
1368dnl
9ed9df77
FL		 1369dnl ctags ignores symbols with extras identifiers. This is a list of
1370dnl specially handled identifiers to be ignored. [ctags(1) -I <list>].
0eaaacac
FL		 1371AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1372 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
9ed9df77 1373 ["OVS_LOCKABLE OVS_NO_THREAD_SAFETY_ANALYSIS OVS_REQ_RDLOCK+ OVS_ACQ_RDLOCK+ OVS_REQ_WRLOCK+ OVS_ACQ_WRLOCK+ OVS_REQUIRES+ OVS_ACQUIRES+ OVS_TRY_WRLOCK+ OVS_TRY_RDLOCK+ OVS_TRY_LOCK+ OVS_GUARDED_BY+ OVS_EXCLUDED+ OVS_RELEASES+ OVS_ACQ_BEFORE+ OVS_ACQ_AFTER+"]))
0eaaacac 1374
8a8cd0ac
BP		 1375dnl OVS_PTHREAD_SET_NAME
1376dnl
1377dnl This checks for three known variants of pthreads functions for setting
1378dnl the name of the current thread:
1379dnl
1380dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1381dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1382dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1383dnl
1384dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1385dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1386dnl provide to it.
1387dnl
1388dnl This macro defines:
1389dnl
1390dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1391dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1392dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1393AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1394 [AC_CHECK_FUNCS([pthread_set_name_np])
1395 if test $ac_cv_func_pthread_set_name_np != yes; then
1396 AC_CACHE_CHECK(
1397 [for pthread_setname_np() variant],
1398 [ovs_cv_pthread_setname_np],
1399 [AC_LINK_IFELSE(
a0903134 1400 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1401 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1402 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1403 [AC_LINK_IFELSE(
a0903134 1404 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1405], [pthread_setname_np(pthread_self(), "%s", "name");])],
1406 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1407 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1408 case $ovs_cv_pthread_setname_np in # (
1409 glibc)
a0903134
YT		 1410 AC_DEFINE(
1411 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1412 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1413 ;; # (
8a8cd0ac 1414 netbsd)
a0903134
YT		 1415 AC_DEFINE(
1416 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1417 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1418 ;;
8a8cd0ac
BP		 1419 esac
1420 fi])
5020f5f0
BP		 1421
1422dnl OVS_CHECK_LINUX_HOST.
1423dnl
1424dnl Checks whether we're building for a Linux host, based on the presence of
1425dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1426dnl LINUX based on the result.
1427AC_DEFUN([OVS_CHECK_LINUX_HOST],
1428 [AC_CACHE_CHECK(
1429 [whether __linux__ is defined],
1430 [ovs_cv_linux],
1431 [AC_COMPILE_IFELSE(
1432 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1433 [ovs_cv_linux=true],
1434 [ovs_cv_linux=false])])
1435 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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