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064af421
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1# -*- autoconf -*-
2
0cdd5b13 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 Nicira, Inc.
064af421 4#
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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#
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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
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17dnl OVS_ENABLE_WERROR
18AC_DEFUN([OVS_ENABLE_WERROR],
19 [AC_ARG_ENABLE(
20 [Werror],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
95626395 25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
308bf988
BP
26 fi])
27
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
df265086
BP
35 AC_SUBST([FLAKE8_WERROR])
36
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
40 else
41 SPARSE_WERROR=
42 fi
43 AC_SUBST([SPARSE_WERROR])])
a64e37a1 44
e3438006 45dnl OVS_CHECK_LINUX
064af421 46dnl
997d327d 47dnl Configure linux kernel source tree
e3438006 48AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP
49 AC_ARG_WITH([linux],
50 [AC_HELP_STRING([--with-linux=/path/to/linux],
51 [Specify the Linux kernel build directory])])
52 AC_ARG_WITH([linux-source],
53 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
54 [Specify the Linux kernel source directory
a0903134
YT
55 (usually figured out automatically from build
56 directory)])])
8a2d6596
BP
57
58 # Deprecated equivalents to --with-linux, --with-linux-source.
59 AC_ARG_WITH([l26])
60 AC_ARG_WITH([l26-source])
61
62 if test X"$with_linux" != X; then
63 KBUILD=$with_linux
64 elif test X"$with_l26" != X; then
65 KBUILD=$with_l26
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
67 else
68 KBUILD=
69 fi
70
71 if test X"$KBUILD" != X; then
72 if test X"$with_linux_source" != X; then
73 KSRC=$with_linux_source
74 elif test X"$with_l26_source" != X; then
75 KSRC=$with_l26_source
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP
77 else
78 KSRC=
8a2d6596
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79 fi
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
82 fi
83
e3438006
BP
84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
86 case $KBUILD in
0b6d72fc 87 /*) ;;
e3438006 88 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 89 esac
064af421 90
7c9e113b
BP
91 # The build directory is what the user provided.
92 # Make sure that it exists.
8a2d6596 93 AC_MSG_CHECKING([for Linux build directory])
e3438006 94 if test -d "$KBUILD"; then
a0903134
YT
95 AC_MSG_RESULT([$KBUILD])
96 AC_SUBST(KBUILD)
064af421 97 else
a0903134
YT
98 AC_MSG_RESULT([no])
99 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
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100 fi
101
7c9e113b 102 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 103 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 104 # Use heuristics to find the source headers.
8a2d6596 105 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP
106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
108 case $KSRC in
f5fb5de6 109 /*) ;;
e3438006 110 *) KSRC=`pwd`/$KSRC ;;
b57f675c 111 esac
e3438006 112 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP
114 fi
115 else
e3438006
BP
116 KSRC=$KBUILD
117 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
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118 # Debian kernel build Makefiles tend to include a line of the form:
119 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
120 # First try to extract the source directory from this line.
121 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
122 if test ! -e "$KSRC"/include/linux/kernel.h; then
123 # Didn't work. Fall back to name-based heuristics that used to work.
124 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
125 */build)
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
127 ;; # (
128 *)
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
130 ;;
131 esac
132 fi
f5fb5de6 133 fi
fe0731b1 134 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP
136 fi
137 fi
e3438006 138 AC_MSG_RESULT([$KSRC])
7c9e113b
BP
139
140 AC_MSG_CHECKING([for kernel version])
71fe9970 141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
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142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 144 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 145 AC_ERROR([cannot determine kernel version])
71fe9970
BP
146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
148 else
149 kversion=$version.$patchlevel.$sublevel
7c9e113b 150 fi
71fe9970
BP
151 AC_MSG_RESULT([$kversion])
152
3afcde43 153 if test "$version" -ge 4; then
d58b59c1 154 if test "$version" = 4 && test "$patchlevel" -le 20; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
d58b59c1 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.20.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 160 : # Linux 3.x
71fe9970 161 else
8063e095 162 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 163 fi
2520f452
IY
164 if (test ! -e "$KBUILD"/include/linux/version.h && \
165 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP
166 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
167 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 168 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 169 fi
e3438006 170 OVS_CHECK_LINUX_COMPAT
064af421 171 fi
e3438006 172 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP
173])
174
1dc0da67
PB
175dnl OVS_CHECK_LINUX_TC
176dnl
177dnl Configure Linux tc compat.
178AC_DEFUN([OVS_CHECK_LINUX_TC], [
179 AC_COMPILE_IFELSE([
180 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
dd83253e 181 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
1dc0da67 182 ])],
dd83253e
OG
183 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
184 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
1dc0da67
PB
185
186 AC_COMPILE_IFELSE([
187 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
188 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
189 ])],
190 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 191 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67
PB
192
193 AC_COMPILE_IFELSE([
194 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 195 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 196 ])],
4b12e454
OG
197 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
198 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB
199
200 AC_COMPILE_IFELSE([
201 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
202 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
203 ])],
204 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 205 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH
206
207 AC_COMPILE_IFELSE([
208 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
209 int x = TCA_SKBEDIT_FLAGS;
210 ])],
211 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
212 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB
213])
214
8c7130da
AC
215dnl OVS_CHECK_LINUX_SCTP_CT
216dnl
217dnl Checks for kernels which need additional SCTP state
218AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
219 AC_COMPILE_IFELSE([
220 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
221#include <linux/netfilter/nfnetlink_conntrack.h>
222#include <linux/netfilter/nf_conntrack_common.h>
223#include <linux/netfilter/nf_conntrack_sctp.h>], [
224 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
225 ])],
226 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
227 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
228])
229
f0d1ead8
IM
230dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
231dnl
232dnl Check for a function in a library list.
233AC_DEFUN([OVS_FIND_DEPENDENCY], [
234 AC_SEARCH_LIBS([$1], [$2], [], [
235 AC_MSG_ERROR([unable to find $3, install the dependency package])
236 ])
237])
238
8a9562d2
PS
239dnl OVS_CHECK_DPDK
240dnl
241dnl Configure DPDK source tree
242AC_DEFUN([OVS_CHECK_DPDK], [
243 AC_ARG_WITH([dpdk],
244 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV
245 [Specify the DPDK build directory])],
246 [have_dpdk=true])
8a9562d2 247
40b5ea86 248 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 249 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB
250 AC_MSG_RESULT([no])
251 DPDKLIB_FOUND=false
252 else
253 AC_MSG_RESULT([yes])
254 case "$with_dpdk" in
255 yes)
256 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE
257 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
258 DPDK_INCLUDE="$DPDK_CFLAGS"
259 DPDK_LIB="$DPDK_LIBS"], [
260 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
261 DPDK_LIB="-ldpdk"])
40b5ea86
BB
262 ;;
263 *)
264 DPDK_AUTO_DISCOVER="false"
96195c09 265 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB
266 # If 'with_dpdk' is passed install directory, point to headers
267 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE
268 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
269 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
270 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
271 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 272 fi
40b5ea86 273 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 274 DPDK_LIB="-ldpdk"
40b5ea86
BB
275 ;;
276 esac
8a9562d2 277
95626395
TG
278 ovs_save_CFLAGS="$CFLAGS"
279 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 280 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB
281 if test "$DPDK_AUTO_DISCOVER" = "false"; then
282 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
283 fi
284
865cee2b
IM
285 AC_CHECK_HEADERS([rte_config.h], [], [
286 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
287 ], [AC_INCLUDES_DEFAULT])
288
f0d1ead8
IM
289 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
290 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
291 ], [], [[#include <rte_config.h>]])
4b88d678 292
f0d1ead8
IM
293 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
294 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
295 ], [], [[#include <rte_config.h>]])
fc3b425f 296
f0d1ead8
IM
297 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
298 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
299 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
300 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
301 ], [], [[#include <rte_config.h>]])
302 ], [], [[#include <rte_config.h>]])
939bad9a 303
f0d1ead8
IM
304 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
305 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
306 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
307 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
308 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
309 ], [[#include <rte_config.h>]])
310 ], [], [[#include <rte_config.h>]])
84844e3f 311
f0d1ead8
IM
312 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
313 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
314 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
315 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
316 ], [[#include <rte_config.h>]])
317 ], [], [[#include <rte_config.h>]])
939bad9a 318
e2f37511
IM
319 # DPDK uses dlopen to load plugins.
320 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
321
322 AC_MSG_CHECKING([whether linking with dpdk works])
323 LIBS="$DPDK_LIB $LIBS"
324 AC_LINK_IFELSE(
325 [AC_LANG_PROGRAM([#include <rte_config.h>
326 #include <rte_eal.h>],
327 [int rte_argc; char ** rte_argv;
328 rte_eal_init(rte_argc, rte_argv);])],
329 [AC_MSG_RESULT([yes])
330 DPDKLIB_FOUND=true],
331 [AC_MSG_RESULT([no])
332 if test "$DPDK_AUTO_DISCOVER" = "true"; then
333 AC_MSG_ERROR(m4_normalize([
334 Could not find DPDK library in default search path, Use --with-dpdk
335 to specify the DPDK library installed in non-standard location]))
336 else
337 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
338 fi
339 ])
c1223b11 340
95626395
TG
341 CFLAGS="$ovs_save_CFLAGS"
342 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB
343 if test "$DPDK_AUTO_DISCOVER" = "false"; then
344 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
345 fi
96195c09 346 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 347 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 348
3c94676c 349 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP
350 #
351 # This happens because the rest of the DPDK code doesn't use any symbol in
352 # the pmd driver objects, and the drivers register themselves using an
353 # __attribute__((constructor)) function.
354 #
355 # These options are specified inside a single -Wl directive to prevent
356 # autotools from reordering them.
5b5aa2d8
CE
357 #
358 # OTOH newer versions of dpdk pkg-config (generated with Meson)
359 # will already have flagged just the right set of libs with
360 # --whole-archive - in those cases do not wrap it once more.
361 case "$DPDK_LIB" in
362 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
363 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
364 esac
9475dfeb 365 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 366 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS
367 fi
368
40b5ea86 369 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS
370])
371
8828e5c7 372dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP
373dnl
374dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP
375dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
376dnl <REGEX> translated to uppercase.
064af421
BP
377AC_DEFUN([OVS_GREP_IFELSE], [
378 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG
379 if test -f $1; then
380 grep '$2' $1 >/dev/null 2>&1
381 status=$?
382 case $status in
997d327d 383 0)
7507ec48 384 AC_MSG_RESULT([yes])
8828e5c7 385 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 386 ;;
997d327d 387 1)
7507ec48
JG
388 AC_MSG_RESULT([no])
389 $4
390 ;;
997d327d 391 *)
7507ec48
JG
392 AC_MSG_ERROR([grep exited with status $status])
393 ;;
394 esac
395 else
396 AC_MSG_RESULT([file not found])
397 $4
398 fi
064af421
BP
399])
400
13dd4a97
JS
401dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
402dnl
403dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
404dnl structure definition. If this is successful, runs IF-MATCH, otherwise
405dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
406dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
407dnl translated to uppercase.
408AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
409 AC_MSG_CHECKING([whether $2 has member $3 in $1])
410 if test -f $1; then
83a27884 411 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS
412 status=$?
413 case $status in
414 0)
415 AC_MSG_RESULT([yes])
416 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
417 ;;
418 1)
419 AC_MSG_RESULT([no])
420 $5
421 ;;
422 *)
423 AC_MSG_ERROR([grep exited with status $status])
424 ;;
425 esac
426 else
427 AC_MSG_RESULT([file not found])
428 $5
429 fi
430])
431
71ce9edd
JR
432dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
433dnl
434dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
435dnl the function signature starting from the line matching FUNCTION
436dnl and ending with the line containing the closing parenthesis. If
437dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
438dnl IF-MATCH is empty then it defines to
439dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
440dnl <REGEX> translated to uppercase.
441AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
442 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
443 if test -f $1; then
444 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
445 status=$?
446 case $status in
447 0)
448 AC_MSG_RESULT([yes])
449 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
450 ;;
451 1)
452 AC_MSG_RESULT([no])
453 $5
454 ;;
455 *)
456 AC_MSG_ERROR([grep exited with status $status])
457 ;;
458 esac
459 else
460 AC_MSG_RESULT([file not found])
461 $5
462 fi
463])
464
064af421
BP
465dnl OVS_DEFINE(NAME)
466dnl
467dnl Defines NAME to 1 in kcompat.h.
468AC_DEFUN([OVS_DEFINE], [
22bcc0e7 469 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP
470])
471
e3438006 472dnl OVS_CHECK_LINUX_COMPAT
064af421 473dnl
8063e095 474dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP
475dnl the directory in $KBUILD.
476AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG
477 rm -f datapath/linux/kcompat.h.new
478 mkdir -p datapath/linux
479 : > datapath/linux/kcompat.h.new
4aa13c0c 480
e23775f2
PS
481 echo '#include <linux/version.h>
482#ifndef RHEL_RELEASE_CODE
483#define RHEL_RELEASE_CODE 0
484#define RHEL_RELEASE_VERSION(a, b) 0
485#endif' >> datapath/linux/kcompat.h.new
486
e3438006 487 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG
488 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
489
db1dcb23
DB
490 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
491 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
492
e23775f2
PS
493 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
494 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
495 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
496
e3438006 497 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 498 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 499 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 500
8aef057b 501 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 502 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW
503 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
504 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 505
d923a695 506 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 507 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 508
e23775f2
PS
509 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
510 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
511 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 512 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 513 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 514
e3438006 515 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 516 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS
517 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
518 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS
519 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
520 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
521
13dd4a97
JS
522 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
523 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS
524 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
525 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB
526 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
527 [ip_do_fragment], [net],
528 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS
529 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
530 [ip_local_out], [net],
531 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
532
cfda4537 533 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS
534
535 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
536 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 537 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS
538 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
539 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS
540 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
541 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 542 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 543 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS
544 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
545 [frags_work])
d1c390e6
JS
546 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
547 [rwlock])
e0d45da3
JS
548 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
549 [list_evictor])
38f45380 550 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW
551 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
552 [sub_frag_mem_limit], [struct.netns_frags],
553 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
554 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
555 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS
556 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
557 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 558
f2252c61
PS
559 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
560 dnl OVS does not really need ipv6 label field, but its presence signifies that
561 dnl the stack has all required ipv6 support.
562 dnl OVS also does not need dst_cache But this dependency allows us to write
563 dnl much cleaner code.
564
3259c4ff
PS
565 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
566 [label],
567 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
568 [iptunnel_pull_offloads],
997d327d 569 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR
570 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
571 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 572
138df3e5
GR
573 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
574 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW
575 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
576 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS
577 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
578 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 579 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP
580 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
581 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
582 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 584 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 586 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 587 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS
588 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
589 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS
590 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
591 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 592 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 593 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS
594 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
595 dnl So check type of tstats.
596 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
597 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS
598 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
599 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 600 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS
601 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
602 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
603 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
604 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 605 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW
606 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
607 [extended])
7efb1e09
PS
608 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
609 [netdev_master_upper_dev_link], [upper_priv],
610 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW
611 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
612 [netdev_master_upper_dev_link_rh],
613 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
614
6c0bf091
JW
615 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
616 [max_mtu])
39ca3383
YHW
617 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
618 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS
619
620 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW
621 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
622 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 623 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS
624 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
625 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS
626 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
627 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
628 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
629 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW
630 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
631
0643a78b 632
e4e04c3b 633 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 634 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 635
6d9b6937
JR
636 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
637 [nf_conn], [struct timer_list[[ \t]]*timeout],
638 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
639 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
640 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
641
71ce9edd
JR
642 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
643 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 644 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR
645 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
646 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 647 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW
648 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
649 [nf_ct_set])
56ec5593
JS
650 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
651 [nf_ct_is_untracked])
ac9cd0d2
JS
652 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
653 [nf_ct_zone_init])
eca4cde0
YS
654 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
655 [net_ns_get])
459064e7
JS
656 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
657 [nf_connlabels_get])
7f2ab8cd
JR
658 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
659 [nf_connlabels_get], [int bit],
660 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR
661 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
662 [nf_conn_labels], [words])
0d330e42
JR
663 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
664 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 665 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 666 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW
667 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
668 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 669
e2f3178f 670 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 671 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 672
e23775f2
PS
673 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
674 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
675 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
676 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
677 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
678
e3438006
BP
679 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
680 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 681 [rcu_read_lock_held])])
8fa52250 682 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 683 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS
684 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
685 [rtnl_create_link], [extack],
686 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
997d327d 687
6a33828d
BP
688 # Check for the proto_data_valid member in struct sk_buff. The [^@]
689 # is necessary because some versions of this header remove the
690 # member but retain the kerneldoc comment that describes it (which
691 # starts with @). The brackets must be doubled because of m4
692 # quoting rules.
e3438006 693 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 694 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 695 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 696 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 697 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 698 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 699 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 700 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG
701 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
702 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 703 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 704 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 706 [skb_copy_from_linear_data_offset])
b9c15df9
PS
707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
708 [skb_reset_tail_pointer])
e3438006 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 711 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 712 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 713 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 714 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 715 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 716 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 717 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 718 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC
719 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
720 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 721 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS
722 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
723 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL
724 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
725 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 726 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 727 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 728 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 729 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 730 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 731 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 732 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 733 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 734 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 735
e3438006 736 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 737 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 738 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 739 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS
740 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
741 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 742
e3438006
BP
743 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
744 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 745
0d03e51c 746 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 747 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 748
114fce23
SG
749 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
750 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 751 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG
752 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
753 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 754 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS
755 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
756 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS
757 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
758 [genl_notify], [net],
759 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
760
13dd4a97
JS
761
762 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
763 [genl_multicast_group], [id])
fdce83a3 764 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 765
cc1d0dea 766 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 767 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 768 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 769 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 770 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS
771 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
772 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS
773 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
774 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
775
91b37647 776 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 777 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG
778 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
779 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
780 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 781 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 782 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 783 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH
784 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
785 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB
786 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
787 [nla_parse], [netlink_ext_ack],
788 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 789
c4e976db
JG
790 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
791
e3438006 792 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 793 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 794 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 795 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 796 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 797 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 798 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 799
aadd6ae9
JS
800 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
801 [metadata_dst_alloc], [metadata_type])
802
09f27436
JG
803 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
804
3174a818
TG
805 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
806 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 807 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS
808 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
809 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
810 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 811 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS
812 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
813 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS
814 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
815 [gro_receive])
e23775f2
PS
816
817 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG
818 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
819 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
820 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 821
b7ebebcd
PS
822 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
823 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL
824 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
825 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS
826 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
827 [udp_add_offload], [net],
828 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR
829 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
830 [nf_defrag_ipv6_enable], [net],
831 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR
832 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
833 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR
834 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
835 [needs_free_netdev],
836 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR
837 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
838 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 839 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR
840 [nf_conntrack_helper_put],
841 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 842 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 843 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB
844 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
845 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR
846 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
847 [extack],
848 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR
849 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
850 [list],
851 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG
852 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
853 [IP_CT_UNTRACKED])
36d3520b
GR
854 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
855 [netdev_master_upper_dev_link], [extack],
856 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR
857 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
858 [__LINUX_COMPILER_TYPES_H],
859 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB
860 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
861 [ktime_get_ts64],
862 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB
863 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
864 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
865 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ
866 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
867 [ktime_get_ns],
868 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR
869 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
870 frag_percpu_counter_batch[],
871 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT
872 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
873 [null_compute_pseudo],
874 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
876 [__skb_checksum_convert],
877 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
878 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
879 [max_mtu],
880 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT
881 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
882 [erspan_ver],
883 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
884 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
885 [SKB_GSO_IPXIP6],
886 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
887 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
888 [ip6_make_flowlabel], [fl6],
889 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
890 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
891 [auto_flowlabels],
892 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
893 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
894 [netif_keep_dst],
895 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
896 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
897 [ndo_get_iflink],
898 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
899 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
900 [skb_set_inner_ipproto],
901 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
902 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
903 [tunnel_encap_types],
904 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
905 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
906 [IFLA_IPTUN_ENCAP_TYPE],
907 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
908 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
909 [IFLA_IPTUN_COLLECT_METADATA],
910 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR
911 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
912 [IFLA_GRE_ENCAP_DPORT])
913 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
914 [IFLA_GRE_COLLECT_METADATA])
915 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
916 [IFLA_GRE_IGNORE_DF])
917 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
918 [IFLA_GRE_FWMARK])
919 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
920 [IFLA_GRE_ERSPAN_INDEX])
921 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
922 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR
923 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
924 [IFLA_IPTUN_FWMARK])
10f24236
GR
925 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
926 [csum_valid],
927 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
928 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
929 [skb_checksum_simple_validate])
44a629b5
GR
930 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
931 [void.*ndo_get_stats64],
932 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS
933 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
934 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR
935 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
936 [ip_tunnel_info_opts_set], [flags],
937 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR
938 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
939 [rnd],
940 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS
941 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
942 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS
943 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
944 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS
945 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
946 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
947 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
948 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS
949 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
950 [nf_conntrack_l3proto],
951 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW
952 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
953 [nf_conntrack_in], [nf_hook_state],
954 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW
955 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
956 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF
957 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
958 [nf_ct_helper_ext_add], [nf_conntrack_helper],
959 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
21a719d6 960
22bcc0e7
JG
961 if cmp -s datapath/linux/kcompat.h.new \
962 datapath/linux/kcompat.h >/dev/null 2>&1; then
963 rm datapath/linux/kcompat.h.new
064af421 964 else
22bcc0e7 965 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP
966 fi
967])
968
f6eb6b20 969dnl Checks for net/if_dl.h.
d30e714c 970dnl
d23fa2ed
YT
971dnl (We use this as a proxy for checking whether we're building on FreeBSD
972dnl or NetBSD.)
9360d9b7
EM
973AC_DEFUN([OVS_CHECK_IF_DL],
974 [AC_CHECK_HEADER([net/if_dl.h],
975 [HAVE_IF_DL=yes],
976 [HAVE_IF_DL=no])
977 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
978 if test "$HAVE_IF_DL" = yes; then
979 AC_DEFINE([HAVE_IF_DL], [1],
980 [Define to 1 if net/if_dl.h is available.])
d30e714c 981
d23fa2ed 982 # On these platforms we use libpcap to access network devices.
d30e714c 983 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM
984 fi])
985
e50097d2
BP
986dnl Checks for buggy strtok_r.
987dnl
988dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
989dnl with optimization that can cause segfaults:
990dnl
991dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
992AC_DEFUN([OVS_CHECK_STRTOK_R],
993 [AC_CACHE_CHECK(
994 [whether strtok_r macro segfaults on some inputs],
995 [ovs_cv_strtok_r_bug],
996 [AC_RUN_IFELSE(
997 [AC_LANG_PROGRAM([#include <stdio.h>
998 #include <string.h>
999 ],
416e7132
BP
1000 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1001 /* Assume bug is present, because relatively minor
1002 changes in compiler settings (e.g. optimization
1003 level) can make it crop up. */
1004 return 1;
1005 #else
1006 char string[] = ":::";
e50097d2
BP
1007 char *save_ptr = (char *) 0xc0ffee;
1008 char *token1, *token2;
1009 token1 = strtok_r(string, ":", &save_ptr);
1010 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1011 freopen ("/dev/null", "w", stdout);
e50097d2
BP
1012 printf ("%s %s\n", token1, token2);
1013 return 0;
416e7132 1014 #endif
e50097d2
BP
1015 ]])],
1016 [ovs_cv_strtok_r_bug=no],
1017 [ovs_cv_strtok_r_bug=yes],
1018 [ovs_cv_strtok_r_bug=yes])])
1019 if test $ovs_cv_strtok_r_bug = yes; then
1020 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1021 [Define if strtok_r macro segfaults on some inputs])
1022 fi
1023])
1024
064af421
BP
1025dnl ----------------------------------------------------------------------
1026dnl These macros are from GNU PSPP, with the following original license:
1027dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1028dnl This file is free software; the Free Software Foundation
1029dnl gives unlimited permission to copy and/or distribute it,
1030dnl with or without modifications, as long as this notice is preserved.
1031
50194820 1032AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1033 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP
1034 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1035 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP
1036 dnl Include -Werror in the compiler options, because without -Werror
1037 dnl clang's GCC-compatible compiler driver does not return a failure
1038 dnl exit status even though it complains about options it does not
1039 dnl understand.
c2deac54
YT
1040 dnl
1041 dnl Also, check stderr as gcc exits with status 0 for options
1042 dnl rejected at getopt level.
1043 dnl % touch /tmp/a.c
1044 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1045 dnl gcc: unrecognized option '-Qunused-arguments'
1046 dnl 0
1047 dnl %
4c1e8cb9
BP
1048 dnl
1049 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1050 dnl it does not understand, unless it has another error to report, so
1051 dnl instead of testing for -Wno-<foo>, test for the positive version.
1052 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP
1053 AC_COMPILE_IFELSE(
1054 [AC_LANG_SOURCE([int x;])],
1055 [if test -s conftest.err && grep "unrecognized option" conftest.err
1056 then
1057 ovs_cv_name[]=no
1058 else
1059 ovs_cv_name[]=yes
1060 fi],
1061 [ovs_cv_name[]=no])
064af421
BP
1062 CFLAGS="$ovs_save_CFLAGS"])
1063 if test $ovs_cv_name = yes; then
83f6c050 1064 m4_if([$2], [], [:], [$2])
064af421
BP
1065 else
1066 m4_if([$3], [], [:], [$3])
1067 fi
1068])
1069
50194820
BP
1070dnl OVS_CHECK_WERROR
1071dnl
1072dnl Check whether the C compiler accepts -Werror.
1073dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1074AC_DEFUN([OVS_CHECK_WERROR],
1075 [WERROR=
1076 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1077
1078dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1079dnl Check whether the given C compiler OPTION is accepted.
1080dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1081AC_DEFUN([OVS_CHECK_CC_OPTION],
1082 [AC_REQUIRE([OVS_CHECK_WERROR])
1083 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1084
064af421
BP
1085dnl OVS_ENABLE_OPTION([OPTION])
1086dnl Check whether the given C compiler OPTION is accepted.
d161c099 1087dnl If so, add it to WARNING_FLAGS.
064af421
BP
1088dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1089AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP
1090 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1091 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP
1092
1093dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1094dnl Check whether the given C compiler OPTION is accepted.
1095dnl If so, enable the given Automake CONDITIONAL.
1096
1097dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1098AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1099 [OVS_CHECK_CC_OPTION(
1100 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1101 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1102dnl ----------------------------------------------------------------------
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1103
1104dnl Check for too-old XenServer.
1105AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1106 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1107 [if test -e /etc/redhat-release; then
1108 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1109 fi
1110 if test -z "$ovs_cv_xsversion"; then
1111 ovs_cv_xsversion=none
1112 fi])
1113 case $ovs_cv_xsversion in
1114 none)
1115 ;;
1116
1117 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1118 [[6-9]]* | dnl XenServer 6 or later
1119 5.[[7-9]]* | dnl XenServer 5.7 or later
1120 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1121 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1122 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1123 ;;
1124
1125 *)
1126 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1127 ;;
1128 esac])
29d935d6 1129
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1130dnl OVS_CHECK_SPARSE_TARGET
1131dnl
1132dnl The "cgcc" script from "sparse" isn't very good at detecting the
1133dnl target for which the code is being built. This helps it out.
1134AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1135 [AC_CACHE_CHECK(
1136 [target hint for cgcc],
1137 [ac_cv_sparse_target],
1138 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1139 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1140 [x86_64-*], [ac_cv_sparse_target=x86_64],
1141 [ac_cv_sparse_target=other])])
1142 AS_CASE([$ac_cv_sparse_target],
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1143 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1144 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1145 [SPARSEFLAGS= CGCCFLAGS=])
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IM
1146
1147 dnl Get the the default defines for vector instructions from compiler to
1148 dnl allow "sparse" correctly check the same code that will be built.
1149 dnl Required for checking DPDK headers.
1150 AC_MSG_CHECKING([vector options for cgcc])
1151 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1152 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1153 AC_MSG_RESULT([$VECTOR])
1154 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1155
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1156 AC_SUBST([SPARSEFLAGS])
1157 AC_SUBST([CGCCFLAGS])])
1158
32e96ab7
AZ
1159dnl OVS_SPARSE_EXTRA_INCLUDES
1160dnl
1161dnl The cgcc script from "sparse" does not search gcc's default
1162dnl search path. Get the default search path from GCC and pass
1163dnl them to sparse.
1164AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1165 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1166 [`$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 ' ' `] ))
1167
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1168dnl OVS_ENABLE_SPARSE
1169AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1170 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1171 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
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1172 : ${SPARSE=sparse}
1173 AC_SUBST([SPARSE])
1174 AC_CONFIG_COMMANDS_PRE(
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1175 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1176
1177 AC_ARG_ENABLE(
1178 [sparse],
1179 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1180 [], [enable_sparse=no])
1181 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1182
0eaaacac
FL
1183dnl OVS_CTAGS_IDENTIFIERS
1184dnl
1185dnl ctags ignores symbols with extras identifiers. This builds a list of
1186dnl specially handled identifiers to be ignored.
1187AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1188 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1189 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1190
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1191dnl OVS_PTHREAD_SET_NAME
1192dnl
1193dnl This checks for three known variants of pthreads functions for setting
1194dnl the name of the current thread:
1195dnl
1196dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1197dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1198dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1199dnl
1200dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1201dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1202dnl provide to it.
1203dnl
1204dnl This macro defines:
1205dnl
1206dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1207dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1208dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1209AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1210 [AC_CHECK_FUNCS([pthread_set_name_np])
1211 if test $ac_cv_func_pthread_set_name_np != yes; then
1212 AC_CACHE_CHECK(
1213 [for pthread_setname_np() variant],
1214 [ovs_cv_pthread_setname_np],
1215 [AC_LINK_IFELSE(
a0903134 1216 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1217 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1218 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1219 [AC_LINK_IFELSE(
a0903134 1220 [AC_LANG_PROGRAM([#include <pthread.h>
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1221], [pthread_setname_np(pthread_self(), "%s", "name");])],
1222 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1223 [ovs_cv_pthread_setname_np=none])])])
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1224 case $ovs_cv_pthread_setname_np in # (
1225 glibc)
a0903134
YT
1226 AC_DEFINE(
1227 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1228 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1229 ;; # (
8a8cd0ac 1230 netbsd)
a0903134
YT
1231 AC_DEFINE(
1232 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1233 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1234 ;;
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1235 esac
1236 fi])
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1237
1238dnl OVS_CHECK_LINUX_HOST.
1239dnl
1240dnl Checks whether we're building for a Linux host, based on the presence of
1241dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1242dnl LINUX based on the result.
1243AC_DEFUN([OVS_CHECK_LINUX_HOST],
1244 [AC_CACHE_CHECK(
1245 [whether __linux__ is defined],
1246 [ovs_cv_linux],
1247 [AC_COMPILE_IFELSE(
1248 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1249 [ovs_cv_linux=true],
1250 [ovs_cv_linux=false])])
1251 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])