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ovs-thread: Add pthread spin lock support.
[mirror_ovs.git] / acinclude.m4
CommitLineData
064af421
BP		 1# -*- autoconf -*-
2
0cdd5b13 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 Nicira, Inc.
064af421 4#
a14bc59f
BP		 5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at:
064af421 8#
a14bc59f
BP		 9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
064af421 16
a64e37a1
BP		 17dnl OVS_ENABLE_WERROR
18AC_DEFUN([OVS_ENABLE_WERROR],
19 [AC_ARG_ENABLE(
20 [Werror],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
95626395 25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
308bf988
BP		 26 fi])
27
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
df265086
BP		 35 AC_SUBST([FLAKE8_WERROR])
36
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
40 else
41 SPARSE_WERROR=
42 fi
43 AC_SUBST([SPARSE_WERROR])])
a64e37a1 44
e3438006 45dnl OVS_CHECK_LINUX
064af421 46dnl
997d327d 47dnl Configure linux kernel source tree
e3438006 48AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 49 AC_ARG_WITH([linux],
50 [AC_HELP_STRING([--with-linux=/path/to/linux],
51 [Specify the Linux kernel build directory])])
52 AC_ARG_WITH([linux-source],
53 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
54 [Specify the Linux kernel source directory
a0903134
YT		 55 (usually figured out automatically from build
56 directory)])])
8a2d6596
BP		 57
58 # Deprecated equivalents to --with-linux, --with-linux-source.
59 AC_ARG_WITH([l26])
60 AC_ARG_WITH([l26-source])
61
62 if test X"$with_linux" != X; then
63 KBUILD=$with_linux
64 elif test X"$with_l26" != X; then
65 KBUILD=$with_l26
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
67 else
68 KBUILD=
69 fi
70
71 if test X"$KBUILD" != X; then
72 if test X"$with_linux_source" != X; then
73 KSRC=$with_linux_source
74 elif test X"$with_l26_source" != X; then
75 KSRC=$with_l26_source
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 77 else
78 KSRC=
8a2d6596
BP		 79 fi
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
82 fi
83
e3438006
BP		 84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
86 case $KBUILD in
0b6d72fc 87 /*) ;;
e3438006 88 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 89 esac
064af421 90
7c9e113b
BP		 91 # The build directory is what the user provided.
92 # Make sure that it exists.
8a2d6596 93 AC_MSG_CHECKING([for Linux build directory])
e3438006 94 if test -d "$KBUILD"; then
a0903134
YT		 95 AC_MSG_RESULT([$KBUILD])
96 AC_SUBST(KBUILD)
064af421 97 else
a0903134
YT		 98 AC_MSG_RESULT([no])
99 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 100 fi
101
7c9e113b 102 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 103 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 104 # Use heuristics to find the source headers.
8a2d6596 105 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
108 case $KSRC in
f5fb5de6 109 /*) ;;
e3438006 110 *) KSRC=`pwd`/$KSRC ;;
b57f675c 111 esac
e3438006 112 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 114 fi
115 else
e3438006
BP		 116 KSRC=$KBUILD
117 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 118 # Debian kernel build Makefiles tend to include a line of the form:
119 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
120 # First try to extract the source directory from this line.
121 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
122 if test ! -e "$KSRC"/include/linux/kernel.h; then
123 # Didn't work. Fall back to name-based heuristics that used to work.
124 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
125 */build)
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
127 ;; # (
128 *)
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
130 ;;
131 esac
132 fi
f5fb5de6 133 fi
fe0731b1 134 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 136 fi
137 fi
e3438006 138 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 139
140 AC_MSG_CHECKING([for kernel version])
71fe9970 141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 144 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 145 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
148 else
149 kversion=$version.$patchlevel.$sublevel
7c9e113b 150 fi
71fe9970
BP		 151 AC_MSG_RESULT([$kversion])
152
2adada0e
YS		 153 if test "$version" -ge 5; then
154 if test "$version" = 5 && test "$patchlevel" -le 0; then
155 : # Linux 5.x
d76aabea 156 else
2adada0e 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.0.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
2adada0e
YS		 159 elif test "$version" = 4; then
160 : # Linux 4.x
8063e095 161 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 162 : # Linux 3.x
71fe9970 163 else
8063e095 164 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 165 fi
2520f452
IY		 166 if (test ! -e "$KBUILD"/include/linux/version.h && \
167 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 168 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
169 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 170 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 171 fi
e3438006 172 OVS_CHECK_LINUX_COMPAT
064af421 173 fi
e3438006 174 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 175])
176
1dc0da67
PB		 177dnl OVS_CHECK_LINUX_TC
178dnl
179dnl Configure Linux tc compat.
180AC_DEFUN([OVS_CHECK_LINUX_TC], [
181 AC_COMPILE_IFELSE([
182 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
dd83253e 183 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
1dc0da67 184 ])],
dd83253e
OG		 185 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
186 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
1dc0da67
PB		 187
188 AC_COMPILE_IFELSE([
189 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
190 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
191 ])],
192 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 193 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67
PB		 194
195 AC_COMPILE_IFELSE([
196 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 197 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 198 ])],
4b12e454
OG		 199 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
200 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 201
202 AC_COMPILE_IFELSE([
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
204 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
205 ])],
206 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 207 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
7808b2b9
JH		 208
209 AC_COMPILE_IFELSE([
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
211 int x = TCA_SKBEDIT_FLAGS;
212 ])],
213 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
214 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
1dc0da67
PB		 215])
216
8c7130da
AC		 217dnl OVS_CHECK_LINUX_SCTP_CT
218dnl
219dnl Checks for kernels which need additional SCTP state
220AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
221 AC_COMPILE_IFELSE([
222 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
223#include <linux/netfilter/nfnetlink_conntrack.h>
224#include <linux/netfilter/nf_conntrack_common.h>
225#include <linux/netfilter/nf_conntrack_sctp.h>], [
226 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
227 ])],
228 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
229 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
230])
231
f0d1ead8
IM		 232dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
233dnl
234dnl Check for a function in a library list.
235AC_DEFUN([OVS_FIND_DEPENDENCY], [
236 AC_SEARCH_LIBS([$1], [$2], [], [
237 AC_MSG_ERROR([unable to find $3, install the dependency package])
238 ])
239])
240
8a9562d2
PS		 241dnl OVS_CHECK_DPDK
242dnl
243dnl Configure DPDK source tree
244AC_DEFUN([OVS_CHECK_DPDK], [
245 AC_ARG_WITH([dpdk],
246 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 247 [Specify the DPDK build directory])],
248 [have_dpdk=true])
8a9562d2 249
40b5ea86 250 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 251 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 252 AC_MSG_RESULT([no])
253 DPDKLIB_FOUND=false
254 else
255 AC_MSG_RESULT([yes])
256 case "$with_dpdk" in
257 yes)
258 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 259 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
260 DPDK_INCLUDE="$DPDK_CFLAGS"
261 DPDK_LIB="$DPDK_LIBS"], [
262 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
263 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 264 ;;
265 *)
266 DPDK_AUTO_DISCOVER="false"
96195c09 267 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 268 # If 'with_dpdk' is passed install directory, point to headers
269 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 270 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
271 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
272 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
273 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 274 fi
40b5ea86 275 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 276 DPDK_LIB="-ldpdk"
40b5ea86
BB		 277 ;;
278 esac
8a9562d2 279
95626395
TG		 280 ovs_save_CFLAGS="$CFLAGS"
281 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 282 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 283 if test "$DPDK_AUTO_DISCOVER" = "false"; then
284 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
285 fi
286
865cee2b
IM		 287 AC_CHECK_HEADERS([rte_config.h], [], [
288 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
289 ], [AC_INCLUDES_DEFAULT])
290
f0d1ead8
IM		 291 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
292 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
293 ], [], [[#include <rte_config.h>]])
4b88d678 294
f0d1ead8
IM		 295 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
296 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
297 ], [], [[#include <rte_config.h>]])
fc3b425f 298
f0d1ead8
IM		 299 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
300 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
301 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
302 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
303 ], [], [[#include <rte_config.h>]])
304 ], [], [[#include <rte_config.h>]])
939bad9a 305
f0d1ead8
IM		 306 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
307 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
308 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
309 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
310 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
311 ], [[#include <rte_config.h>]])
312 ], [], [[#include <rte_config.h>]])
84844e3f 313
f0d1ead8
IM		 314 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
315 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
316 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
317 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
318 ], [[#include <rte_config.h>]])
319 ], [], [[#include <rte_config.h>]])
939bad9a 320
e2f37511
IM		 321 # DPDK uses dlopen to load plugins.
322 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
323
324 AC_MSG_CHECKING([whether linking with dpdk works])
325 LIBS="$DPDK_LIB $LIBS"
326 AC_LINK_IFELSE(
327 [AC_LANG_PROGRAM([#include <rte_config.h>
328 #include <rte_eal.h>],
329 [int rte_argc; char ** rte_argv;
330 rte_eal_init(rte_argc, rte_argv);])],
331 [AC_MSG_RESULT([yes])
332 DPDKLIB_FOUND=true],
333 [AC_MSG_RESULT([no])
334 if test "$DPDK_AUTO_DISCOVER" = "true"; then
335 AC_MSG_ERROR(m4_normalize([
336 Could not find DPDK library in default search path, Use --with-dpdk
337 to specify the DPDK library installed in non-standard location]))
338 else
339 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
340 fi
341 ])
c1223b11 342
95626395
TG		 343 CFLAGS="$ovs_save_CFLAGS"
344 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 345 if test "$DPDK_AUTO_DISCOVER" = "false"; then
346 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
347 fi
96195c09 348 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 349 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 350
3c94676c 351 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 352 #
353 # This happens because the rest of the DPDK code doesn't use any symbol in
354 # the pmd driver objects, and the drivers register themselves using an
355 # __attribute__((constructor)) function.
356 #
357 # These options are specified inside a single -Wl directive to prevent
358 # autotools from reordering them.
5b5aa2d8
CE		 359 #
360 # OTOH newer versions of dpdk pkg-config (generated with Meson)
361 # will already have flagged just the right set of libs with
362 # --whole-archive - in those cases do not wrap it once more.
363 case "$DPDK_LIB" in
364 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
365 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
366 esac
9475dfeb 367 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 368 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 369 fi
370
40b5ea86 371 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 372])
373
8828e5c7 374dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 375dnl
376dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 377dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
378dnl <REGEX> translated to uppercase.
064af421
BP		 379AC_DEFUN([OVS_GREP_IFELSE], [
380 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 381 if test -f $1; then
382 grep '$2' $1 >/dev/null 2>&1
383 status=$?
384 case $status in
997d327d 385 0)
7507ec48 386 AC_MSG_RESULT([yes])
8828e5c7 387 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 388 ;;
997d327d 389 1)
7507ec48
JG		 390 AC_MSG_RESULT([no])
391 $4
392 ;;
997d327d 393 *)
7507ec48
JG		 394 AC_MSG_ERROR([grep exited with status $status])
395 ;;
396 esac
397 else
398 AC_MSG_RESULT([file not found])
399 $4
400 fi
064af421
BP		 401])
402
13dd4a97
JS		 403dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
404dnl
405dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
406dnl structure definition. If this is successful, runs IF-MATCH, otherwise
407dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
408dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
409dnl translated to uppercase.
410AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
411 AC_MSG_CHECKING([whether $2 has member $3 in $1])
412 if test -f $1; then
83a27884 413 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 414 status=$?
415 case $status in
416 0)
417 AC_MSG_RESULT([yes])
418 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
419 ;;
420 1)
421 AC_MSG_RESULT([no])
422 $5
423 ;;
424 *)
425 AC_MSG_ERROR([grep exited with status $status])
426 ;;
427 esac
428 else
429 AC_MSG_RESULT([file not found])
430 $5
431 fi
432])
433
71ce9edd
JR		 434dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
435dnl
436dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
437dnl the function signature starting from the line matching FUNCTION
438dnl and ending with the line containing the closing parenthesis. If
439dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
440dnl IF-MATCH is empty then it defines to
441dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
442dnl <REGEX> translated to uppercase.
443AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
444 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
445 if test -f $1; then
446 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
447 status=$?
448 case $status in
449 0)
450 AC_MSG_RESULT([yes])
451 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
452 ;;
453 1)
454 AC_MSG_RESULT([no])
455 $5
456 ;;
457 *)
458 AC_MSG_ERROR([grep exited with status $status])
459 ;;
460 esac
461 else
462 AC_MSG_RESULT([file not found])
463 $5
464 fi
465])
466
064af421
BP		 467dnl OVS_DEFINE(NAME)
468dnl
469dnl Defines NAME to 1 in kcompat.h.
470AC_DEFUN([OVS_DEFINE], [
22bcc0e7 471 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 472])
473
e3438006 474dnl OVS_CHECK_LINUX_COMPAT
064af421 475dnl
8063e095 476dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 477dnl the directory in $KBUILD.
478AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 479 rm -f datapath/linux/kcompat.h.new
480 mkdir -p datapath/linux
481 : > datapath/linux/kcompat.h.new
4aa13c0c 482
e23775f2
PS		 483 echo '#include <linux/version.h>
484#ifndef RHEL_RELEASE_CODE
485#define RHEL_RELEASE_CODE 0
486#define RHEL_RELEASE_VERSION(a, b) 0
487#endif' >> datapath/linux/kcompat.h.new
488
e3438006 489 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 490 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
491
db1dcb23
DB		 492 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
493 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
494
e23775f2
PS		 495 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
496 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
497 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
498
e3438006 499 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 500 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 501 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 502
8aef057b 503 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 504 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 505 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
506 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 507
d923a695 508 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 509 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 510
e23775f2
PS		 511 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
512 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
513 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 514 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 515 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
9feb5bda 516 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
d923a695 517
e3438006 518 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 519 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 520 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
521 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 522 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
523 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
524
13dd4a97
JS		 525 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
526 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 527 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
528 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 529 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
530 [ip_do_fragment], [net],
531 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 532 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
533 [ip_local_out], [net],
534 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
535
cfda4537 536 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 537
538 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
539 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 540 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 541 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
542 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 543 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
544 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 545 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 546 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 547 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
548 [frags_work])
d1c390e6
JS		 549 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
550 [rwlock])
e0d45da3
JS		 551 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
552 [list_evictor])
38f45380 553 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 554 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
555 [sub_frag_mem_limit], [struct.netns_frags],
556 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
557 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
558 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 559 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
560 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 561
f2252c61
PS		 562 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
563 dnl OVS does not really need ipv6 label field, but its presence signifies that
564 dnl the stack has all required ipv6 support.
565 dnl OVS also does not need dst_cache But this dependency allows us to write
566 dnl much cleaner code.
567
3259c4ff
PS		 568 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
569 [label],
570 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
571 [iptunnel_pull_offloads],
997d327d 572 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 573 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
574 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 575
138df3e5
GR		 576 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
577 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 578 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
579 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 580 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
581 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 582 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
584 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 586 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 587 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 588 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 589 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 590 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 591 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
592 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 593 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
594 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 595 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 596 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 597 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
598 dnl So check type of tstats.
599 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
600 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 601 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
602 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 603 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 604 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
605 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
606 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
607 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 608 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 609 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
610 [extended])
7efb1e09
PS		 611 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
612 [netdev_master_upper_dev_link], [upper_priv],
613 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 614 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
615 [netdev_master_upper_dev_link_rh],
616 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
617
6c0bf091
JW		 618 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
619 [max_mtu])
39ca3383
YHW		 620 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
621 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
140c8971
PM		 622 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
623 [dev_change_flags], [extack],
624 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
e23775f2
PS		 625
626 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
4fdec898
FW		 627 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
628 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
e23775f2 629 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 630 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
631 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 632 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
633 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
634 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
635 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 636 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
637
0643a78b 638
e4e04c3b 639 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 640 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 641
6d9b6937
JR		 642 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
643 [nf_conn], [struct timer_list[[ \t]]*timeout],
644 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
645 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
646 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
647
71ce9edd
JR		 648 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
649 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 650 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 651 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
652 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 653 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 654 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
655 [nf_ct_set])
56ec5593
JS		 656 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
657 [nf_ct_is_untracked])
ac9cd0d2
JS		 658 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
659 [nf_ct_zone_init])
eca4cde0
YS		 660 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
661 [net_ns_get])
459064e7
JS		 662 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
663 [nf_connlabels_get])
7f2ab8cd
JR		 664 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
665 [nf_connlabels_get], [int bit],
666 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 667 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
668 [nf_conn_labels], [words])
0d330e42
JR		 669 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
670 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 671 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 672 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 673 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
674 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 675
e2f3178f 676 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 677 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 678
e23775f2
PS		 679 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
680 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
681 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
682 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
683 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
684
e3438006
BP		 685 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
686 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 687 [rcu_read_lock_held])])
8fa52250 688 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 689 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
8b7cc752
YS		 690 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
691 [rtnl_create_link], [extack],
692 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
997d327d 693
6a33828d
BP		 694 # Check for the proto_data_valid member in struct sk_buff. The [^@]
695 # is necessary because some versions of this header remove the
696 # member but retain the kerneldoc comment that describes it (which
697 # starts with @). The brackets must be doubled because of m4
698 # quoting rules.
e3438006 699 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 700 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 701 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 702 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 703 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
708 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 710 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 711 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 712 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 713 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
714 [skb_reset_tail_pointer])
e3438006 715 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 716 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 717 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 718 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 719 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 720 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 721 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 722 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 723 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 724 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 725 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
726 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 727 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 728 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
729 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 730 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
731 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 732 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 733 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 734 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 735 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 736 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 737 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 738 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 739 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 740 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 741
e3438006 742 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 743 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 744 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 745 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 746 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
747 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 748
e3438006
BP		 749 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
750 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 751
0d03e51c 752 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 753 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 754
114fce23
SG		 755 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
756 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 757 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 758 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
759 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 760 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 761 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
762 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 763 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
764 [genl_notify], [net],
765 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
766
13dd4a97
JS		 767
768 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
769 [genl_multicast_group], [id])
fdce83a3 770 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 771
cc1d0dea 772 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 773 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 774 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 775 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 776 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 777 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
778 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 779 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
780 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
781
91b37647 782 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 783 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 784 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
785 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
786 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 787 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 788 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 789 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 790 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
791 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 792 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
793 [nla_parse], [netlink_ext_ack],
794 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 795
c4e976db
JG		 796 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
797
e3438006 798 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 799 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 800 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 801 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 802 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 803 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 804 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 805
aadd6ae9
JS		 806 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
807 [metadata_dst_alloc], [metadata_type])
808
09f27436
JG		 809 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
810
3174a818
TG		 811 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
812 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 813 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 814 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
815 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
816 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 817 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 818 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
819 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 820 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
821 [gro_receive])
e23775f2
PS		 822
823 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 824 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
825 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
826 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 827
b7ebebcd
PS		 828 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
829 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 830 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
831 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 832 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
833 [udp_add_offload], [net],
834 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 835 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
836 [nf_defrag_ipv6_enable], [net],
837 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 838 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
839 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 840 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
841 [needs_free_netdev],
842 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 843 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
844 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 845 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 846 [nf_conntrack_helper_put],
847 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 848 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 849 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 850 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
851 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 852 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
853 [extack],
854 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 855 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
856 [list],
857 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 858 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
859 [IP_CT_UNTRACKED])
36d3520b
GR		 860 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
861 [netdev_master_upper_dev_link], [extack],
862 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 863 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
864 [__LINUX_COMPILER_TYPES_H],
865 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 866 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
867 [ktime_get_ts64],
868 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 869 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
870 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
871 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 872 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
873 [ktime_get_ns],
874 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 875 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
876 frag_percpu_counter_batch[],
877 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 878 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
879 [null_compute_pseudo],
880 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
881 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
882 [__skb_checksum_convert],
883 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
884 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
885 [max_mtu],
886 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 887 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
888 [erspan_ver],
889 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
890 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
891 [SKB_GSO_IPXIP6],
892 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
893 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
894 [ip6_make_flowlabel], [fl6],
895 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
896 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
897 [auto_flowlabels],
898 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
899 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
900 [netif_keep_dst],
901 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
902 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
903 [ndo_get_iflink],
904 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
905 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
906 [skb_set_inner_ipproto],
907 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
908 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
909 [tunnel_encap_types],
910 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
911 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
912 [IFLA_IPTUN_ENCAP_TYPE],
913 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
914 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
915 [IFLA_IPTUN_COLLECT_METADATA],
916 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 917 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
918 [IFLA_GRE_ENCAP_DPORT])
919 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
920 [IFLA_GRE_COLLECT_METADATA])
921 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
922 [IFLA_GRE_IGNORE_DF])
923 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
924 [IFLA_GRE_FWMARK])
925 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
926 [IFLA_GRE_ERSPAN_INDEX])
927 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
928 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 929 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
930 [IFLA_IPTUN_FWMARK])
10f24236
GR		 931 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
932 [csum_valid],
933 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
9feb5bda
MM		 934 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
935 [vlan_present],
936 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
10f24236
GR		 937 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
938 [skb_checksum_simple_validate])
44a629b5
GR		 939 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
940 [void.*ndo_get_stats64],
941 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 942 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
943 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 944 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
945 [ip_tunnel_info_opts_set], [flags],
946 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 947 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
948 [rnd],
949 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
f7246940
GS		 950 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
951 [OVS_DEFINE([HAVE_OVERFLOW_H])])
8f6d230f
YS		 952 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
953 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
f7246940
GS		 954 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
955 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
956 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
957 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
945d6d1c
YS		 958 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
959 [nf_conntrack_l3proto],
960 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
4fdec898
FW		 961 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
962 [nf_conntrack_in], [nf_hook_state],
963 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
7857a9b4
FW		 964 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
965 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
7685ce31
GF		 966 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
967 [nf_ct_helper_ext_add], [nf_conntrack_helper],
968 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
6d97adee
GR		 969 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
970 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
971 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
972 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
21a719d6 973
22bcc0e7
JG		 974 if cmp -s datapath/linux/kcompat.h.new \
975 datapath/linux/kcompat.h >/dev/null 2>&1; then
976 rm datapath/linux/kcompat.h.new
064af421 977 else
22bcc0e7 978 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 979 fi
980])
981
f6eb6b20 982dnl Checks for net/if_dl.h.
d30e714c 983dnl
d23fa2ed
YT		 984dnl (We use this as a proxy for checking whether we're building on FreeBSD
985dnl or NetBSD.)
9360d9b7
EM		 986AC_DEFUN([OVS_CHECK_IF_DL],
987 [AC_CHECK_HEADER([net/if_dl.h],
988 [HAVE_IF_DL=yes],
989 [HAVE_IF_DL=no])
990 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
991 if test "$HAVE_IF_DL" = yes; then
992 AC_DEFINE([HAVE_IF_DL], [1],
993 [Define to 1 if net/if_dl.h is available.])
d30e714c 994
d23fa2ed 995 # On these platforms we use libpcap to access network devices.
d30e714c 996 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 997 fi])
998
e50097d2
BP		 999dnl Checks for buggy strtok_r.
1000dnl
1001dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1002dnl with optimization that can cause segfaults:
1003dnl
1004dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1005AC_DEFUN([OVS_CHECK_STRTOK_R],
1006 [AC_CACHE_CHECK(
1007 [whether strtok_r macro segfaults on some inputs],
1008 [ovs_cv_strtok_r_bug],
1009 [AC_RUN_IFELSE(
1010 [AC_LANG_PROGRAM([#include <stdio.h>
1011 #include <string.h>
1012 ],
416e7132
BP		 1013 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1014 /* Assume bug is present, because relatively minor
1015 changes in compiler settings (e.g. optimization
1016 level) can make it crop up. */
1017 return 1;
1018 #else
1019 char string[] = ":::";
e50097d2
BP		 1020 char *save_ptr = (char *) 0xc0ffee;
1021 char *token1, *token2;
1022 token1 = strtok_r(string, ":", &save_ptr);
1023 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1024 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1025 printf ("%s %s\n", token1, token2);
1026 return 0;
416e7132 1027 #endif
e50097d2
BP		 1028 ]])],
1029 [ovs_cv_strtok_r_bug=no],
1030 [ovs_cv_strtok_r_bug=yes],
1031 [ovs_cv_strtok_r_bug=yes])])
1032 if test $ovs_cv_strtok_r_bug = yes; then
1033 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1034 [Define if strtok_r macro segfaults on some inputs])
1035 fi
1036])
1037
064af421
BP		 1038dnl ----------------------------------------------------------------------
1039dnl These macros are from GNU PSPP, with the following original license:
1040dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1041dnl This file is free software; the Free Software Foundation
1042dnl gives unlimited permission to copy and/or distribute it,
1043dnl with or without modifications, as long as this notice is preserved.
1044
50194820 1045AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1046 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1047 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1048 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1049 dnl Include -Werror in the compiler options, because without -Werror
1050 dnl clang's GCC-compatible compiler driver does not return a failure
1051 dnl exit status even though it complains about options it does not
1052 dnl understand.
c2deac54
YT		 1053 dnl
1054 dnl Also, check stderr as gcc exits with status 0 for options
1055 dnl rejected at getopt level.
1056 dnl % touch /tmp/a.c
1057 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1058 dnl gcc: unrecognized option '-Qunused-arguments'
1059 dnl 0
1060 dnl %
4c1e8cb9
BP		 1061 dnl
1062 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1063 dnl it does not understand, unless it has another error to report, so
1064 dnl instead of testing for -Wno-<foo>, test for the positive version.
1065 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1066 AC_COMPILE_IFELSE(
1067 [AC_LANG_SOURCE([int x;])],
1068 [if test -s conftest.err && grep "unrecognized option" conftest.err
1069 then
1070 ovs_cv_name[]=no
1071 else
1072 ovs_cv_name[]=yes
1073 fi],
1074 [ovs_cv_name[]=no])
064af421
BP		 1075 CFLAGS="$ovs_save_CFLAGS"])
1076 if test $ovs_cv_name = yes; then
83f6c050 1077 m4_if([$2], [], [:], [$2])
064af421
BP		 1078 else
1079 m4_if([$3], [], [:], [$3])
1080 fi
1081])
1082
50194820
BP		 1083dnl OVS_CHECK_WERROR
1084dnl
1085dnl Check whether the C compiler accepts -Werror.
1086dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1087AC_DEFUN([OVS_CHECK_WERROR],
1088 [WERROR=
1089 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1090
1091dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1092dnl Check whether the given C compiler OPTION is accepted.
1093dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1094AC_DEFUN([OVS_CHECK_CC_OPTION],
1095 [AC_REQUIRE([OVS_CHECK_WERROR])
1096 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1097
064af421
BP		 1098dnl OVS_ENABLE_OPTION([OPTION])
1099dnl Check whether the given C compiler OPTION is accepted.
d161c099 1100dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1101dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1102AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1103 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1104 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1105
1106dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1107dnl Check whether the given C compiler OPTION is accepted.
1108dnl If so, enable the given Automake CONDITIONAL.
1109
1110dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1111AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1112 [OVS_CHECK_CC_OPTION(
1113 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1114 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1115dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1116
1117dnl Check for too-old XenServer.
1118AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1119 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1120 [if test -e /etc/redhat-release; then
1121 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1122 fi
1123 if test -z "$ovs_cv_xsversion"; then
1124 ovs_cv_xsversion=none
1125 fi])
1126 case $ovs_cv_xsversion in
1127 none)
1128 ;;
1129
1130 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1131 [[6-9]]* | dnl XenServer 6 or later
1132 5.[[7-9]]* | dnl XenServer 5.7 or later
1133 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1134 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1135 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1136 ;;
1137
1138 *)
1139 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1140 ;;
1141 esac])
29d935d6 1142
643c0c34
BP		 1143dnl OVS_CHECK_SPARSE_TARGET
1144dnl
1145dnl The "cgcc" script from "sparse" isn't very good at detecting the
1146dnl target for which the code is being built. This helps it out.
1147AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1148 [AC_CACHE_CHECK(
1149 [target hint for cgcc],
1150 [ac_cv_sparse_target],
1151 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1152 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1153 [x86_64-*], [ac_cv_sparse_target=x86_64],
1154 [ac_cv_sparse_target=other])])
1155 AS_CASE([$ac_cv_sparse_target],
0cdd5b13
BP		 1156 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1157 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
643c0c34 1158 [SPARSEFLAGS= CGCCFLAGS=])
346c6538
IM		 1159
1160 dnl Get the the default defines for vector instructions from compiler to
1161 dnl allow "sparse" correctly check the same code that will be built.
1162 dnl Required for checking DPDK headers.
1163 AC_MSG_CHECKING([vector options for cgcc])
1164 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1165 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1166 AC_MSG_RESULT([$VECTOR])
1167 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1168
643c0c34
BP		 1169 AC_SUBST([SPARSEFLAGS])
1170 AC_SUBST([CGCCFLAGS])])
1171
32e96ab7
AZ		 1172dnl OVS_SPARSE_EXTRA_INCLUDES
1173dnl
1174dnl The cgcc script from "sparse" does not search gcc's default
1175dnl search path. Get the default search path from GCC and pass
1176dnl them to sparse.
1177AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1178 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1179 [`$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 ' ' `] ))
1180
29d935d6
BP		 1181dnl OVS_ENABLE_SPARSE
1182AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1183 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1184 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1185 : ${SPARSE=sparse}
1186 AC_SUBST([SPARSE])
1187 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1188 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1189
1190 AC_ARG_ENABLE(
1191 [sparse],
1192 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1193 [], [enable_sparse=no])
1194 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1195
0eaaacac
FL		 1196dnl OVS_CTAGS_IDENTIFIERS
1197dnl
1198dnl ctags ignores symbols with extras identifiers. This builds a list of
1199dnl specially handled identifiers to be ignored.
1200AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1201 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1202 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1203
8a8cd0ac
BP		 1204dnl OVS_PTHREAD_SET_NAME
1205dnl
1206dnl This checks for three known variants of pthreads functions for setting
1207dnl the name of the current thread:
1208dnl
1209dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1210dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1211dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1212dnl
1213dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1214dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1215dnl provide to it.
1216dnl
1217dnl This macro defines:
1218dnl
1219dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1220dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1221dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1222AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1223 [AC_CHECK_FUNCS([pthread_set_name_np])
1224 if test $ac_cv_func_pthread_set_name_np != yes; then
1225 AC_CACHE_CHECK(
1226 [for pthread_setname_np() variant],
1227 [ovs_cv_pthread_setname_np],
1228 [AC_LINK_IFELSE(
a0903134 1229 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1230 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1231 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1232 [AC_LINK_IFELSE(
a0903134 1233 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1234], [pthread_setname_np(pthread_self(), "%s", "name");])],
1235 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1236 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1237 case $ovs_cv_pthread_setname_np in # (
1238 glibc)
a0903134
YT		 1239 AC_DEFINE(
1240 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1241 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1242 ;; # (
8a8cd0ac 1243 netbsd)
a0903134
YT		 1244 AC_DEFINE(
1245 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1246 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1247 ;;
8a8cd0ac
BP		 1248 esac
1249 fi])
5020f5f0
BP		 1250
1251dnl OVS_CHECK_LINUX_HOST.
1252dnl
1253dnl Checks whether we're building for a Linux host, based on the presence of
1254dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1255dnl LINUX based on the result.
1256AC_DEFUN([OVS_CHECK_LINUX_HOST],
1257 [AC_CACHE_CHECK(
1258 [whether __linux__ is defined],
1259 [ovs_cv_linux],
1260 [AC_COMPILE_IFELSE(
1261 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1262 [ovs_cv_linux=true],
1263 [ovs_cv_linux=false])])
1264 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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