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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
24ce0afe 80 AC_MSG_WARN([--with-linux is deprecated and kernel support is limited to 5.8 and below])
8a2d6596
BP		 81 elif test X"$with_l26" != X; then
82 KBUILD=$with_l26
83 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
84 else
85 KBUILD=
86 fi
87
88 if test X"$KBUILD" != X; then
89 if test X"$with_linux_source" != X; then
90 KSRC=$with_linux_source
91 elif test X"$with_l26_source" != X; then
92 KSRC=$with_l26_source
93 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 94 else
95 KSRC=
8a2d6596
BP		 96 fi
97 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
98 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
99 fi
100
e3438006
BP		 101 if test -n "$KBUILD"; then
102 KBUILD=`eval echo "$KBUILD"`
103 case $KBUILD in
0b6d72fc 104 /*) ;;
e3438006 105 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 106 esac
064af421 107
7c9e113b
BP		 108 # The build directory is what the user provided.
109 # Make sure that it exists.
8a2d6596 110 AC_MSG_CHECKING([for Linux build directory])
e3438006 111 if test -d "$KBUILD"; then
a0903134
YT		 112 AC_MSG_RESULT([$KBUILD])
113 AC_SUBST(KBUILD)
064af421 114 else
a0903134
YT		 115 AC_MSG_RESULT([no])
116 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 117 fi
118
7c9e113b 119 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 120 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 121 # Use heuristics to find the source headers.
8a2d6596 122 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 123 if test -n "$KSRC"; then
124 KSRC=`eval echo "$KSRC"`
125 case $KSRC in
f5fb5de6 126 /*) ;;
e3438006 127 *) KSRC=`pwd`/$KSRC ;;
b57f675c 128 esac
e3438006 129 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 130 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 131 fi
132 else
e3438006
BP		 133 KSRC=$KBUILD
134 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 135 # Debian kernel build Makefiles tend to include a line of the form:
136 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
137 # First try to extract the source directory from this line.
138 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
139 if test ! -e "$KSRC"/include/linux/kernel.h; then
140 # Didn't work. Fall back to name-based heuristics that used to work.
141 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
142 */build)
143 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
144 ;; # (
145 *)
146 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
147 ;;
148 esac
149 fi
f5fb5de6 150 fi
fe0731b1 151 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 152 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 153 fi
154 fi
e3438006 155 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 156
157 AC_MSG_CHECKING([for kernel version])
71fe9970 158 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 159 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
160 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 161 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 162 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 163 elif test X"$sublevel" = X; then
164 kversion=$version.$patchlevel
165 else
166 kversion=$version.$patchlevel.$sublevel
7c9e113b 167 fi
71fe9970
BP		 168 AC_MSG_RESULT([$kversion])
169
2adada0e 170 if test "$version" -ge 5; then
44722d58 171 if test "$version" = 5 && test "$patchlevel" -le 8; then
2adada0e 172 : # Linux 5.x
d76aabea 173 else
44722d58 174 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.8.x is not supported (please refer to the FAQ for advice)])
d76aabea 175 fi
2adada0e
YS		 176 elif test "$version" = 4; then
177 : # Linux 4.x
8063e095 178 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 179 : # Linux 3.x
71fe9970 180 else
8063e095 181 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 182 fi
2520f452
IY		 183 if (test ! -e "$KBUILD"/include/linux/version.h && \
184 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 185 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
186 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 187 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 188 fi
e3438006 189 OVS_CHECK_LINUX_COMPAT
064af421 190 fi
e3438006 191 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 192])
193
292d5bd9
VB		 194dnl OVS_CHECK_LINUX_NETLINK
195dnl
196dnl Configure Linux netlink compat.
197AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [
198 AC_COMPILE_IFELSE([
199 AC_LANG_PROGRAM([#include <linux/netlink.h>], [
200 struct nla_bitfield32 x = { 0 };
201 ])],
202 [AC_DEFINE([HAVE_NLA_BITFIELD32], [1],
203 [Define to 1 if struct nla_bitfield32 is available.])])
204])
205
1dc0da67
PB		 206dnl OVS_CHECK_LINUX_TC
207dnl
208dnl Configure Linux tc compat.
209AC_DEFUN([OVS_CHECK_LINUX_TC], [
210 AC_COMPILE_IFELSE([
211 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
292d5bd9 212 int x = TCA_ACT_FLAGS;
1dc0da67 213 ])],
292d5bd9
VB		 214 [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1],
215 [Define to 1 if TCA_ACT_FLAGS is available.])])
1dc0da67 216
c0a1df2e
RD		 217 AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>])
218
1dc0da67
PB		 219 AC_COMPILE_IFELSE([
220 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
221 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
222 ])],
223 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 224 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67 225
abef7959
JH		 226 AC_COMPILE_IFELSE([
227 AC_LANG_PROGRAM([#include <linux/tc_act/tc_mpls.h>], [
228 int x = TCA_MPLS_TTL;
229 ])],
230 [AC_DEFINE([HAVE_TCA_MPLS_TTL], [1],
231 [Define to 1 if HAVE_TCA_MPLS_TTL is available.])])
232
1dc0da67
PB		 233 AC_COMPILE_IFELSE([
234 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 235 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 236 ])],
4b12e454
OG		 237 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
238 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 239
240 AC_COMPILE_IFELSE([
241 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
242 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
243 ])],
244 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 245 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH		 246
247 AC_COMPILE_IFELSE([
248 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
249 int x = TCA_SKBEDIT_FLAGS;
250 ])],
251 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
252 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB		 253])
254
8c7130da
AC		 255dnl OVS_CHECK_LINUX_SCTP_CT
256dnl
257dnl Checks for kernels which need additional SCTP state
258AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
259 AC_COMPILE_IFELSE([
260 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
261#include <linux/netfilter/nfnetlink_conntrack.h>
262#include <linux/netfilter/nf_conntrack_common.h>
263#include <linux/netfilter/nf_conntrack_sctp.h>], [
264 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
265 ])],
266 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
267 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
268])
269
fd4d4777
YHW		 270dnl OVS_CHECK_LINUX_VIRTIO_TYPES
271dnl
272dnl Checks for kernels that need virtio_types definition.
273AC_DEFUN([OVS_CHECK_LINUX_VIRTIO_TYPES], [
274 AC_COMPILE_IFELSE([
275 AC_LANG_PROGRAM([#include <linux/virtio_types.h>], [
276 __virtio16 x = 0;
277 ])],
278 [AC_DEFINE([HAVE_VIRTIO_TYPES], [1],
279 [Define to 1 if __virtio16 is available.])])
280])
281
f0d1ead8
IM		 282dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
283dnl
284dnl Check for a function in a library list.
285AC_DEFUN([OVS_FIND_DEPENDENCY], [
286 AC_SEARCH_LIBS([$1], [$2], [], [
287 AC_MSG_ERROR([unable to find $3, install the dependency package])
288 ])
289])
290
0de1b425
WT		 291dnl OVS_CHECK_LINUX_AF_XDP
292dnl
293dnl Check both Linux kernel AF_XDP and libbpf support
294AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
295 AC_ARG_ENABLE([afxdp],
296 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
297 [], [enable_afxdp=no])
298 AC_MSG_CHECKING([whether AF_XDP is enabled])
299 if test "$enable_afxdp" != yes; then
300 AC_MSG_RESULT([no])
301 AF_XDP_ENABLE=false
302 else
303 AC_MSG_RESULT([yes])
304 AF_XDP_ENABLE=true
305
306 AC_CHECK_HEADER([bpf/libbpf.h], [],
307 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
308
309 AC_CHECK_HEADER([linux/if_xdp.h], [],
310 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
311
312 AC_CHECK_HEADER([bpf/xsk.h], [],
313 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
314
315 AC_CHECK_FUNCS([pthread_spin_lock], [],
316 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
317
e8568993
YHW		 318 OVS_FIND_DEPENDENCY([numa_alloc_onnode], [numa], [libnuma])
319
0de1b425
WT		 320 AC_DEFINE([HAVE_AF_XDP], [1],
321 [Define to 1 if AF_XDP support is available and enabled.])
322 LIBBPF_LDADD=" -lbpf -lelf"
323 AC_SUBST([LIBBPF_LDADD])
e50547b5
WT		 324
325 AC_CHECK_DECL([xsk_ring_prod__needs_wakeup], [
326 AC_DEFINE([HAVE_XDP_NEED_WAKEUP], [1],
327 [XDP need wakeup support detected in xsk.h.])
328 ], [], [[#include <bpf/xsk.h>]])
0de1b425
WT		 329 fi
330 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
331])
332
8a9562d2
PS		 333dnl OVS_CHECK_DPDK
334dnl
335dnl Configure DPDK source tree
336AC_DEFUN([OVS_CHECK_DPDK], [
337 AC_ARG_WITH([dpdk],
252e1e57
IS		 338 [AC_HELP_STRING([--with-dpdk=static|shared|yes],
339 [Specify "static" or "shared" depending on the
340 DPDK libraries to use])],
4c16ee48 341 [have_dpdk=true])
8a9562d2 342
49df3c0f 343 AC_MSG_CHECKING([whether dpdk is enabled])
4c16ee48 344 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 345 AC_MSG_RESULT([no])
346 DPDKLIB_FOUND=false
347 else
348 AC_MSG_RESULT([yes])
349 case "$with_dpdk" in
252e1e57
IS		 350 "shared")
351 PKG_CHECK_MODULES([DPDK], [libdpdk], [
352 DPDK_INCLUDE="$DPDK_CFLAGS"
d2749464 353 DPDK_LIB="$DPDK_LIBS"])
252e1e57
IS		 354 ;;
355 "static" | "yes")
356 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
357 DPDK_INCLUDE="$DPDK_CFLAGS"
d2749464 358 DPDK_LIB="$DPDK_LIBS"])
252e1e57
IS		 359
360 dnl Statically linked private DPDK objects of form
361 dnl -l:file.a must be positioned between
362 dnl --whole-archive ... --no-whole-archive linker parameters.
363 dnl Old pkg-config versions misplace --no-whole-archive parameter
364 dnl and put it next to --whole-archive.
365 AC_MSG_CHECKING([for faulty pkg-config version])
366 echo "$DPDK_LIB" | grep -q 'whole-archive.*l:lib.*no-whole-archive'
367 status=$?
368 case $status in
369 0)
370 AC_MSG_RESULT([no])
371 ;;
372 1)
373 AC_MSG_RESULT([yes])
374 AC_MSG_ERROR([Please upgrade pkg-config])
375 ;;
376 *)
377 AC_MSG_ERROR([grep exited with status $status])
378 ;;
379 esac
40b5ea86 380 esac
8a9562d2 381
95626395
TG		 382 ovs_save_CFLAGS="$CFLAGS"
383 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 384 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86 385
865cee2b
IM		 386 AC_CHECK_HEADERS([rte_config.h], [], [
387 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
388 ], [AC_INCLUDES_DEFAULT])
389
f0d1ead8
IM		 390 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
391 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
392 ], [], [[#include <rte_config.h>]])
4b88d678 393
976c452a
CL		 394 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
395 OVS_FIND_DEPENDENCY([pcap_dump_close], [pcap], [libpcap])
396 ], [], [[#include <rte_config.h>]])
397
5bb068a7
CL		 398 AC_CHECK_DECL([RTE_LIBRTE_PMD_AF_XDP], [
399 LIBBPF_LDADD="-lbpf"
400 ], [], [[#include <rte_config.h>]])
401
f0d1ead8
IM		 402 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
403 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
404 ], [], [[#include <rte_config.h>]])
fc3b425f 405
f0d1ead8 406 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
b926f577 407 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 408 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
409 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
410 ], [[#include <rte_config.h>]])
411 ], [], [[#include <rte_config.h>]])
84844e3f 412
f0d1ead8 413 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
b926f577 414 AC_CHECK_DECL([RTE_IBVERBS_LINK_DLOPEN], [], [dnl not found
f0d1ead8
IM		 415 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
416 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
417 ], [[#include <rte_config.h>]])
418 ], [], [[#include <rte_config.h>]])
939bad9a 419
e2f37511
IM		 420 # DPDK uses dlopen to load plugins.
421 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
422
423 AC_MSG_CHECKING([whether linking with dpdk works])
424 LIBS="$DPDK_LIB $LIBS"
425 AC_LINK_IFELSE(
426 [AC_LANG_PROGRAM([#include <rte_config.h>
427 #include <rte_eal.h>],
428 [int rte_argc; char ** rte_argv;
429 rte_eal_init(rte_argc, rte_argv);])],
430 [AC_MSG_RESULT([yes])
431 DPDKLIB_FOUND=true],
432 [AC_MSG_RESULT([no])
252e1e57
IS		 433 AC_MSG_ERROR(m4_normalize([
434 Could not find DPDK library in default search path, update
435 PKG_CONFIG_PATH for pkg-config to find the .pc file in
436 non-standard location]))
e2f37511 437 ])
c1223b11 438
95626395
TG		 439 CFLAGS="$ovs_save_CFLAGS"
440 LDFLAGS="$ovs_save_LDFLAGS"
252e1e57
IS		 441 # Stripping out possible instruction set specific configuration that DPDK
442 # forces in pkg-config since this could override user-specified options.
443 # It's enough to have -mssse3 to build with DPDK headers.
444 DPDK_INCLUDE=$(echo "$DPDK_INCLUDE" | sed 's/-march=[[^ ]]*//g')
32c8c10d
IM		 445 # Also stripping out '-mno-avx512f'. Support for AVX512 will be disabled
446 # if OVS will detect that it's broken. OVS could be built with a
447 # completely different toolchain that correctly supports AVX512, flags
448 # forced by DPDK only breaks our feature detection mechanism and leads to
449 # build failures: https://github.com/openvswitch/ovs-issues/issues/201
450 DPDK_INCLUDE=$(echo "$DPDK_INCLUDE" | sed 's/-mno-avx512f//g')
96195c09 451 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 452 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 453
3c94676c 454 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 455 #
456 # This happens because the rest of the DPDK code doesn't use any symbol in
457 # the pmd driver objects, and the drivers register themselves using an
458 # __attribute__((constructor)) function.
252e1e57
IS		 459 # Wrap the DPDK libraries inside a single -Wl directive
460 # after comma separation to prevent autotools from reordering them.
461 DPDK_vswitchd_LDFLAGS=$(echo "$DPDK_LIB"| tr -s ' ' ',' | sed 's/-Wl,//g')
462 # Replace -pthread with -lpthread for LD and remove the last extra comma.
463 DPDK_vswitchd_LDFLAGS=$(echo "$DPDK_vswitchd_LDFLAGS"| sed 's/,$//' | \
464 sed 's/-pthread/-lpthread/g')
465 # Prepend "-Wl,".
466 DPDK_vswitchd_LDFLAGS="-Wl,$DPDK_vswitchd_LDFLAGS"
467
9475dfeb 468 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 469 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 470 fi
471
40b5ea86 472 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 473])
474
8828e5c7 475dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 476dnl
477dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 478dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
479dnl <REGEX> translated to uppercase.
064af421
BP		 480AC_DEFUN([OVS_GREP_IFELSE], [
481 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 482 if test -f $1; then
483 grep '$2' $1 >/dev/null 2>&1
484 status=$?
485 case $status in
997d327d 486 0)
7507ec48 487 AC_MSG_RESULT([yes])
8828e5c7 488 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 489 ;;
997d327d 490 1)
7507ec48
JG		 491 AC_MSG_RESULT([no])
492 $4
493 ;;
997d327d 494 *)
7507ec48
JG		 495 AC_MSG_ERROR([grep exited with status $status])
496 ;;
497 esac
498 else
499 AC_MSG_RESULT([file not found])
500 $4
501 fi
064af421
BP		 502])
503
13dd4a97
JS		 504dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
505dnl
506dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
507dnl structure definition. If this is successful, runs IF-MATCH, otherwise
508dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
509dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
510dnl translated to uppercase.
511AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
512 AC_MSG_CHECKING([whether $2 has member $3 in $1])
513 if test -f $1; then
83a27884 514 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 515 status=$?
516 case $status in
517 0)
518 AC_MSG_RESULT([yes])
519 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
520 ;;
521 1)
522 AC_MSG_RESULT([no])
523 $5
524 ;;
525 *)
526 AC_MSG_ERROR([grep exited with status $status])
527 ;;
528 esac
529 else
530 AC_MSG_RESULT([file not found])
531 $5
532 fi
533])
534
71ce9edd
JR		 535dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
536dnl
537dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
538dnl the function signature starting from the line matching FUNCTION
539dnl and ending with the line containing the closing parenthesis. If
540dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
541dnl IF-MATCH is empty then it defines to
542dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
543dnl <REGEX> translated to uppercase.
544AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
545 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
546 if test -f $1; then
547 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
548 status=$?
549 case $status in
550 0)
551 AC_MSG_RESULT([yes])
552 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
553 ;;
554 1)
555 AC_MSG_RESULT([no])
556 $5
557 ;;
558 *)
559 AC_MSG_ERROR([grep exited with status $status])
560 ;;
561 esac
562 else
563 AC_MSG_RESULT([file not found])
564 $5
565 fi
566])
567
82b7e6d1
GR		 568dnl OVS_FIND_OP_PARAM_IFELSE(FILE, OP, REGEX, [IF-MATCH], [IF-NO-MATCH])
569dnl
570dnl Looks for OP in FILE. If it is found, greps for REGEX within the
571dnl OP definition. If this is successful, runs IF-MATCH, otherwise
572dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
573dnl OVS_DEFINE(HAVE_<OP>_WITH_<REGEX>), with <OP> and <REGEX>
574dnl translated to uppercase.
575AC_DEFUN([OVS_FIND_OP_PARAM_IFELSE], [
576 AC_MSG_CHECKING([whether $2 has member $3 in $1])
577 if test -f $1; then
578 awk '/$2[[ \t\n]]*\)\(/,/;/' $1 2>/dev/null | grep '$3' >/dev/null
579 status=$?
580 case $status in
581 0)
582 AC_MSG_RESULT([yes])
583 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
584 ;;
585 1)
586 AC_MSG_RESULT([no])
587 $5
588 ;;
589 *)
590 AC_MSG_ERROR([grep exited with status $status])
591 ;;
592 esac
593 else
594 AC_MSG_RESULT([file not found])
595 $5
596 fi
597])
598
064af421
BP		 599dnl OVS_DEFINE(NAME)
600dnl
601dnl Defines NAME to 1 in kcompat.h.
602AC_DEFUN([OVS_DEFINE], [
22bcc0e7 603 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 604])
605
e3438006 606dnl OVS_CHECK_LINUX_COMPAT
064af421 607dnl
8063e095 608dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 609dnl the directory in $KBUILD.
610AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 611 rm -f datapath/linux/kcompat.h.new
612 mkdir -p datapath/linux
613 : > datapath/linux/kcompat.h.new
4aa13c0c 614
e23775f2
PS		 615 echo '#include <linux/version.h>
616#ifndef RHEL_RELEASE_CODE
617#define RHEL_RELEASE_CODE 0
618#define RHEL_RELEASE_VERSION(a, b) 0
619#endif' >> datapath/linux/kcompat.h.new
620
e3438006 621 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 622 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
623
db1dcb23
DB		 624 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
625 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
626
33f9c873
GR		 627 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub],
628 [dst_entry])
e23775f2
PS		 629 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
630 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
5519e384
YHW		 631 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow.*net],
632 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_FLOW_NET])])
e23775f2 633 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
5519e384 634 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup_flow])
e23775f2 635
e3438006 636 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 637 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 638 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 639
8aef057b 640 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 641 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 642 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
643 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
dca96842
PB		 644 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h],
645 [DECLARE_STATIC_KEY_FALSE],
646 [OVS_DEFINE([HAVE_DECLARE_STATIC_KEY])])
6660a959 647
d923a695 648 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 649 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 650
e23775f2
PS		 651 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
652 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
653 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 654 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 655 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 656 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 657
e3438006 658 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 659 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 660 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
661 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 662 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
663 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
664
13dd4a97
JS		 665 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
666 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 667 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
668 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 669 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
670 [ip_do_fragment], [net],
671 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 672 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
673 [ip_local_out], [net],
674 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
675
cfda4537 676 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 677
678 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
679 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 680 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 681 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
682 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 683 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
684 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 685 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 686 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 687 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
688 [frags_work])
d1c390e6
JS		 689 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
690 [rwlock])
e0d45da3
JS		 691 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
692 [list_evictor])
38f45380 693 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 694 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
695 [sub_frag_mem_limit], [struct.netns_frags],
696 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
697 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
698 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 699 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
700 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 701
f2252c61
PS		 702 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
703 dnl OVS does not really need ipv6 label field, but its presence signifies that
704 dnl the stack has all required ipv6 support.
705 dnl OVS also does not need dst_cache But this dependency allows us to write
706 dnl much cleaner code.
707
3259c4ff
PS		 708 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
709 [label],
710 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
711 [iptunnel_pull_offloads],
997d327d 712 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 713 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
714 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 715
138df3e5
GR		 716 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
717 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 718 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
719 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 720 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
721 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 722 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 723 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
724 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
725 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 726 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 727 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 728 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 729 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 730 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 731 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
732 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 733 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
734 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 735 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 736 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 737 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
738 dnl So check type of tstats.
739 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
740 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 741 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
742 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 743 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 744 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
745 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
746 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
747 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 748 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 749 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
750 [extended])
7efb1e09
PS		 751 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
752 [netdev_master_upper_dev_link], [upper_priv],
753 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 754 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
755 [netdev_master_upper_dev_link_rh],
756 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
757
6c0bf091
JW		 758 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
759 [max_mtu])
39ca3383
YHW		 760 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
761 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 762 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
763 [dev_change_flags], [extack],
764 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 765
766 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 767 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
768 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 769 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 770 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
771 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 772 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
773 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
774 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
775 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce 776 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
d42fb06d 777 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [CONFIG_NF_NAT_NEEDED])
179fccce 778
0643a78b 779
e4e04c3b 780 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 781 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 782
6d9b6937
JR		 783 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
784 [nf_conn], [struct timer_list[[ \t]]*timeout],
785 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
786 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
787 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
788
71ce9edd
JR		 789 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
790 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 791 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 792 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
793 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 794 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 795 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
796 [nf_ct_set])
56ec5593
JS		 797 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
798 [nf_ct_is_untracked])
c1d728db
YHW		 799 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
800 [nf_ct_invert_tuplepr])
ac9cd0d2
JS		 801 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
802 [nf_ct_zone_init])
eca4cde0
YS		 803 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
804 [net_ns_get])
459064e7
JS		 805 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
806 [nf_connlabels_get])
7f2ab8cd
JR		 807 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
808 [nf_connlabels_get], [int bit],
809 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 810 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
811 [nf_conn_labels], [words])
0d330e42
JR		 812 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
813 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 814 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
9ea96dce
YHW		 815 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_packet],
816 [OVS_DEFINE([HAVE_UPSTREAM_NF_NAT])])
0d330e42 817 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432 818 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
4bfdefea
YS		 819 [OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h],
820 [int nf_conncount_add],
821 [], [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])])
2fc8309b
YHW		 822 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [nf_ct_set_timeout])
823 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h], [struct nf_ct_timeout],
824 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT])])
825 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_timeout.h],
826 [\(*nf_ct_timeout_find_get_hook\)], [net],
827 [OVS_DEFINE([HAVE_NF_CT_TIMEOUT_FIND_GET_HOOK_NET])])
057772cf 828
9048ab60
GR		 829 OVS_GREP_IFELSE([$KSRC/include/linux/random.h],
830 [prandom_u32[[\(]]],
831 [OVS_DEFINE([HAVE_PRANDOM_U32])])
f000c879 832 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
b8d42f87
IM		 833 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h],
834 [prandom_u32[[\(]]],
835 [OVS_DEFINE([HAVE_PRANDOM_U32])])
836 OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h], [prandom_u32_max])
4aa13c0c 837
e23775f2
PS		 838 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
839 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
840 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
841 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
842 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
843
e3438006
BP		 844 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
845 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 846 [rcu_read_lock_held])])
8fa52250 847 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 848 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 849 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
850 [rtnl_create_link], [extack],
851 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
efcae7df 852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [nf_reset_ct])
997d327d 853
6a33828d
BP		 854 # Check for the proto_data_valid member in struct sk_buff. The [^@]
855 # is necessary because some versions of this header remove the
856 # member but retain the kerneldoc comment that describes it (which
857 # starts with @). The brackets must be doubled because of m4
858 # quoting rules.
e3438006 859 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 860 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 861 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 862 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 864 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 865 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 866 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 867 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
868 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 869 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 870 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 871 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 872 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 873 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
874 [skb_reset_tail_pointer])
e3438006 875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 876 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 877 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 878 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 879 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 880 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 881 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 882 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 884 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 885 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
886 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 887 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 888 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
889 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
5cce04b6 890 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 891 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 892 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 893 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 894 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 895 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 896 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 897 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 898 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 899
e3438006 900 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 901 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 902 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
903 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 904
e3438006
BP		 905 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
906 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 907
0d03e51c 908 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 909 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 910
114fce23
SG		 911 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
912 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 913 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 914 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
915 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 916 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 917 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
918 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
f1e9590e 919 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_validate_flags])
0643a78b
PS		 920 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
921 [genl_notify], [net],
922 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
923
13dd4a97
JS		 924
925 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
926 [genl_multicast_group], [id])
fdce83a3 927 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 928
cc1d0dea 929 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 930 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 931 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 932 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 933 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 934 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
935 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 936 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
937 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
938
91b37647 939 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 940 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 941 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
942 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
943 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 944 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 945 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 946 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
09c33996 947 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_nest_start_noflag])
6dbd98e6
SH		 948 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
949 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 950 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
951 [nla_parse], [netlink_ext_ack],
952 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 953
c4e976db
JG		 954 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
955
1f649f1c 956 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 957 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 958 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 959 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 960 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 961
aadd6ae9
JS		 962 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
963 [metadata_dst_alloc], [metadata_type])
964
09f27436
JG		 965 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
966
3174a818
TG		 967 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
968 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 969 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 970 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
971 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
972 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 973 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 974 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
975 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 976 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
977 [gro_receive])
e23775f2
PS		 978
979 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 980 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
981 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
982 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 983
b7ebebcd
PS		 984 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
985 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
c970aa4e
PS		 986 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
987 [udp_add_offload], [net],
988 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 989 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
990 [nf_defrag_ipv6_enable], [net],
991 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 992 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
993 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 994 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
995 [needs_free_netdev],
996 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 997 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
998 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 999 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 1000 [nf_conntrack_helper_put],
1001 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
4c941202
YHW		 1002 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1003 [nf_nat_helper_try_module_get])
1004 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1005 [nf_nat_helper_put])
f90e29c9 1006 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 1007 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 1008 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
1009 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 1010 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
1011 [extack],
1012 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 1013 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
1014 [list],
1015 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 1016 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
1017 [IP_CT_UNTRACKED])
36d3520b
GR		 1018 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
1019 [netdev_master_upper_dev_link], [extack],
1020 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 1021 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
1022 [__LINUX_COMPILER_TYPES_H],
1023 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 1024 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1025 [ktime_get_ts64],
1026 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 1027 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
1028 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
1029 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 1030 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
1031 [ktime_get_ns],
1032 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 1033 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
1034 frag_percpu_counter_batch[],
1035 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 1036 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1037 [null_compute_pseudo],
1038 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
1039 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1040 [__skb_checksum_convert],
1041 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
1042 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
1043 [max_mtu],
1044 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 1045 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
1046 [erspan_ver],
1047 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
1048 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1049 [SKB_GSO_IPXIP6],
1050 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
1051 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
1052 [ip6_make_flowlabel], [fl6],
1053 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
1054 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
1055 [auto_flowlabels],
1056 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
1057 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1058 [netif_keep_dst],
1059 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
1060 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
1061 [ndo_get_iflink],
1062 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
1063 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1064 [skb_set_inner_ipproto],
1065 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
1066 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1067 [tunnel_encap_types],
1068 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
1069 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1070 [IFLA_IPTUN_ENCAP_TYPE],
1071 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
1072 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1073 [IFLA_IPTUN_COLLECT_METADATA],
1074 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 1075 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1076 [IFLA_GRE_ENCAP_DPORT])
1077 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1078 [IFLA_GRE_COLLECT_METADATA])
1079 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1080 [IFLA_GRE_IGNORE_DF])
1081 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1082 [IFLA_GRE_FWMARK])
1083 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1084 [IFLA_GRE_ERSPAN_INDEX])
1085 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1086 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 1087 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
1088 [IFLA_IPTUN_FWMARK])
10f24236
GR		 1089 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1090 [csum_valid],
1091 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 1092 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
1093 [vlan_present],
1094 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 1095 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1096 [skb_checksum_simple_validate])
44a629b5
GR		 1097 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
1098 [void.*ndo_get_stats64],
1099 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 1100 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
1101 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 1102 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
1103 [ip_tunnel_info_opts_set], [flags],
1104 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 1105 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
1106 [rnd],
1107 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 1108 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
1109 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 1110 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
1111 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 1112 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
1113 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
1114 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
1115 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 1116 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
1117 [nf_conntrack_l3proto],
1118 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 1119 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
1120 [nf_conntrack_in], [nf_hook_state],
1121 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 1122 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1123 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 1124 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1125 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1126 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 1127 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1128 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1129 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1130 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
4bfdefea
YS		 1131 OVS_GREP_IFELSE([$KSRC/include/linux/rbtree.h], [rb_link_node_rcu],
1132 [OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
6634cc8a
GR		 1133 OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
1134 [OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
f77d85b1
GR		 1135 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
1136 [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
2ef0f1c2
JB		 1137 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], [genl_ops],
1138 [policy],
1139 [OVS_DEFINE([HAVE_GENL_OPS_POLICY])])
6db0f72d
JB		 1140 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h],
1141 [nla_parse_deprecated_strict],
1142 [OVS_DEFINE([HAVE_NLA_PARSE_DEPRECATED_STRICT])])
82b7e6d1
GR		 1143 OVS_FIND_OP_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
1144 [validate], [extack],
1145 [OVS_DEFINE([HAVE_RTNLOP_VALIDATE_WITH_EXTACK])])
9ba57fc7
HZ		 1146 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
1147 [__skb_set_hash])
1148 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [sw_hash])
1149 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash_raw])
21a719d6 1150
22bcc0e7
JG		 1151 if cmp -s datapath/linux/kcompat.h.new \
1152 datapath/linux/kcompat.h >/dev/null 2>&1; then
1153 rm datapath/linux/kcompat.h.new
064af421 1154 else
22bcc0e7 1155 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 1156 fi
1157])
1158
f6eb6b20 1159dnl Checks for net/if_dl.h.
d30e714c 1160dnl
d23fa2ed
YT		 1161dnl (We use this as a proxy for checking whether we're building on FreeBSD
1162dnl or NetBSD.)
9360d9b7
EM		 1163AC_DEFUN([OVS_CHECK_IF_DL],
1164 [AC_CHECK_HEADER([net/if_dl.h],
1165 [HAVE_IF_DL=yes],
1166 [HAVE_IF_DL=no])
1167 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1168 if test "$HAVE_IF_DL" = yes; then
1169 AC_DEFINE([HAVE_IF_DL], [1],
1170 [Define to 1 if net/if_dl.h is available.])
d30e714c 1171
d23fa2ed 1172 # On these platforms we use libpcap to access network devices.
d30e714c 1173 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 1174 fi])
1175
e50097d2
BP		 1176dnl Checks for buggy strtok_r.
1177dnl
1178dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1179dnl with optimization that can cause segfaults:
1180dnl
1181dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1182AC_DEFUN([OVS_CHECK_STRTOK_R],
1183 [AC_CACHE_CHECK(
1184 [whether strtok_r macro segfaults on some inputs],
1185 [ovs_cv_strtok_r_bug],
1186 [AC_RUN_IFELSE(
1187 [AC_LANG_PROGRAM([#include <stdio.h>
1188 #include <string.h>
1189 ],
416e7132
BP		 1190 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1191 /* Assume bug is present, because relatively minor
1192 changes in compiler settings (e.g. optimization
1193 level) can make it crop up. */
1194 return 1;
1195 #else
1196 char string[] = ":::";
e50097d2
BP		 1197 char *save_ptr = (char *) 0xc0ffee;
1198 char *token1, *token2;
1199 token1 = strtok_r(string, ":", &save_ptr);
1200 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1201 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1202 printf ("%s %s\n", token1, token2);
1203 return 0;
416e7132 1204 #endif
e50097d2
BP		 1205 ]])],
1206 [ovs_cv_strtok_r_bug=no],
1207 [ovs_cv_strtok_r_bug=yes],
1208 [ovs_cv_strtok_r_bug=yes])])
1209 if test $ovs_cv_strtok_r_bug = yes; then
1210 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1211 [Define if strtok_r macro segfaults on some inputs])
1212 fi
1213])
1214
064af421
BP		 1215dnl ----------------------------------------------------------------------
1216dnl These macros are from GNU PSPP, with the following original license:
1217dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1218dnl This file is free software; the Free Software Foundation
1219dnl gives unlimited permission to copy and/or distribute it,
1220dnl with or without modifications, as long as this notice is preserved.
1221
50194820 1222AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1223 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1224 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1225 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1226 dnl Include -Werror in the compiler options, because without -Werror
1227 dnl clang's GCC-compatible compiler driver does not return a failure
1228 dnl exit status even though it complains about options it does not
1229 dnl understand.
c2deac54
YT		 1230 dnl
1231 dnl Also, check stderr as gcc exits with status 0 for options
1232 dnl rejected at getopt level.
1233 dnl % touch /tmp/a.c
1234 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1235 dnl gcc: unrecognized option '-Qunused-arguments'
1236 dnl 0
1237 dnl %
4c1e8cb9
BP		 1238 dnl
1239 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1240 dnl it does not understand, unless it has another error to report, so
1241 dnl instead of testing for -Wno-<foo>, test for the positive version.
1242 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1243 AC_COMPILE_IFELSE(
1244 [AC_LANG_SOURCE([int x;])],
1245 [if test -s conftest.err && grep "unrecognized option" conftest.err
1246 then
1247 ovs_cv_name[]=no
1248 else
1249 ovs_cv_name[]=yes
1250 fi],
1251 [ovs_cv_name[]=no])
064af421
BP		 1252 CFLAGS="$ovs_save_CFLAGS"])
1253 if test $ovs_cv_name = yes; then
83f6c050 1254 m4_if([$2], [], [:], [$2])
064af421
BP		 1255 else
1256 m4_if([$3], [], [:], [$3])
1257 fi
1258])
1259
50194820
BP		 1260dnl OVS_CHECK_WERROR
1261dnl
1262dnl Check whether the C compiler accepts -Werror.
1263dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1264AC_DEFUN([OVS_CHECK_WERROR],
1265 [WERROR=
1266 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1267
1268dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1269dnl Check whether the given C compiler OPTION is accepted.
1270dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1271AC_DEFUN([OVS_CHECK_CC_OPTION],
1272 [AC_REQUIRE([OVS_CHECK_WERROR])
1273 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1274
064af421
BP		 1275dnl OVS_ENABLE_OPTION([OPTION])
1276dnl Check whether the given C compiler OPTION is accepted.
d161c099 1277dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1278dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1279AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1280 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1281 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1282
1283dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1284dnl Check whether the given C compiler OPTION is accepted.
1285dnl If so, enable the given Automake CONDITIONAL.
1286
1287dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1288AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1289 [OVS_CHECK_CC_OPTION(
1290 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1291 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1292dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1293
1294dnl Check for too-old XenServer.
1295AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1296 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1297 [if test -e /etc/redhat-release; then
1298 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1299 fi
1300 if test -z "$ovs_cv_xsversion"; then
1301 ovs_cv_xsversion=none
1302 fi])
1303 case $ovs_cv_xsversion in
1304 none)
1305 ;;
1306
1307 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1308 [[6-9]]* | dnl XenServer 6 or later
1309 5.[[7-9]]* | dnl XenServer 5.7 or later
1310 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1311 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1312 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1313 ;;
1314
1315 *)
1316 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1317 ;;
1318 esac])
29d935d6 1319
643c0c34
BP		 1320dnl OVS_CHECK_SPARSE_TARGET
1321dnl
1322dnl The "cgcc" script from "sparse" isn't very good at detecting the
1323dnl target for which the code is being built. This helps it out.
1324AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1325 [AC_CACHE_CHECK(
1326 [target hint for cgcc],
1327 [ac_cv_sparse_target],
1328 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1329 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1330 [x86_64-*], [ac_cv_sparse_target=x86_64],
1331 [ac_cv_sparse_target=other])])
1332 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1333 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1334 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1335 [SPARSEFLAGS= CGCCFLAGS=])
346c6538 1336
e5273084 1337 dnl Get the default defines for vector instructions from compiler to
346c6538
IM		 1338 dnl allow "sparse" correctly check the same code that will be built.
1339 dnl Required for checking DPDK headers.
1340 AC_MSG_CHECKING([vector options for cgcc])
1341 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1342 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1343 AC_MSG_RESULT([$VECTOR])
1344 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1345
643c0c34
BP		 1346 AC_SUBST([SPARSEFLAGS])
1347 AC_SUBST([CGCCFLAGS])])
1348
32e96ab7
AZ		 1349dnl OVS_SPARSE_EXTRA_INCLUDES
1350dnl
1351dnl The cgcc script from "sparse" does not search gcc's default
1352dnl search path. Get the default search path from GCC and pass
1353dnl them to sparse.
1354AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1355 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1356 [`$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 ' ' `] ))
1357
29d935d6
BP		 1358dnl OVS_ENABLE_SPARSE
1359AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1360 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1361 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1362 : ${SPARSE=sparse}
1363 AC_SUBST([SPARSE])
1364 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1365 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1366
1367 AC_ARG_ENABLE(
1368 [sparse],
1369 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1370 [], [enable_sparse=no])
1371 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1372
0eaaacac
FL		 1373dnl OVS_CTAGS_IDENTIFIERS
1374dnl
9ed9df77
FL		 1375dnl ctags ignores symbols with extras identifiers. This is a list of
1376dnl specially handled identifiers to be ignored. [ctags(1) -I <list>].
0eaaacac
FL		 1377AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1378 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
9ed9df77 1379 ["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 1380
8a8cd0ac
BP		 1381dnl OVS_PTHREAD_SET_NAME
1382dnl
1383dnl This checks for three known variants of pthreads functions for setting
1384dnl the name of the current thread:
1385dnl
1386dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1387dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1388dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1389dnl
1390dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1391dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1392dnl provide to it.
1393dnl
1394dnl This macro defines:
1395dnl
1396dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1397dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1398dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1399AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1400 [AC_CHECK_FUNCS([pthread_set_name_np])
1401 if test $ac_cv_func_pthread_set_name_np != yes; then
1402 AC_CACHE_CHECK(
1403 [for pthread_setname_np() variant],
1404 [ovs_cv_pthread_setname_np],
1405 [AC_LINK_IFELSE(
a0903134 1406 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1407 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1408 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1409 [AC_LINK_IFELSE(
a0903134 1410 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1411], [pthread_setname_np(pthread_self(), "%s", "name");])],
1412 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1413 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1414 case $ovs_cv_pthread_setname_np in # (
1415 glibc)
a0903134
YT		 1416 AC_DEFINE(
1417 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1418 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1419 ;; # (
8a8cd0ac 1420 netbsd)
a0903134
YT		 1421 AC_DEFINE(
1422 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1423 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1424 ;;
8a8cd0ac
BP		 1425 esac
1426 fi])
5020f5f0
BP		 1427
1428dnl OVS_CHECK_LINUX_HOST.
1429dnl
1430dnl Checks whether we're building for a Linux host, based on the presence of
1431dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1432dnl LINUX based on the result.
1433AC_DEFUN([OVS_CHECK_LINUX_HOST],
1434 [AC_CACHE_CHECK(
1435 [whether __linux__ is defined],
1436 [ovs_cv_linux],
1437 [AC_COMPILE_IFELSE(
1438 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1439 [ovs_cv_linux=true],
1440 [ovs_cv_linux=false])])
1441 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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