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acinclude: Include libverbs and libmlx5 when needed
[mirror_ovs.git] / acinclude.m4
CommitLineData
064af421
BP		 1# -*- autoconf -*-
2
344f6253 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 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
3afcde43 153 if test "$version" -ge 4; then
7c84d7f4 154 if test "$version" = 4 && test "$patchlevel" -le 18; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
7c84d7f4 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.18.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$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.])])
1dc0da67
PB		 206])
207
8a9562d2
PS		 208dnl OVS_CHECK_DPDK
209dnl
210dnl Configure DPDK source tree
211AC_DEFUN([OVS_CHECK_DPDK], [
212 AC_ARG_WITH([dpdk],
213 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 214 [Specify the DPDK build directory])],
215 [have_dpdk=true])
8a9562d2 216
40b5ea86 217 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 218 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 219 AC_MSG_RESULT([no])
220 DPDKLIB_FOUND=false
221 else
222 AC_MSG_RESULT([yes])
223 case "$with_dpdk" in
224 yes)
225 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 226 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
227 DPDK_INCLUDE="$DPDK_CFLAGS"
228 DPDK_LIB="$DPDK_LIBS"], [
229 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
230 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 231 ;;
232 *)
233 DPDK_AUTO_DISCOVER="false"
96195c09 234 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 235 # If 'with_dpdk' is passed install directory, point to headers
236 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 237 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
238 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
239 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
240 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 241 fi
40b5ea86 242 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 243 DPDK_LIB="-ldpdk"
40b5ea86
BB		 244 ;;
245 esac
8a9562d2 246
95626395
TG		 247 ovs_save_CFLAGS="$CFLAGS"
248 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 249 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 250 if test "$DPDK_AUTO_DISCOVER" = "false"; then
251 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
252 fi
253
865cee2b
IM		 254 AC_CHECK_HEADERS([rte_config.h], [], [
255 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
256 ], [AC_INCLUDES_DEFAULT])
257
435aaddd
CL		 258 AC_COMPILE_IFELSE([
259 AC_LANG_PROGRAM(
260 [
261 #include <rte_config.h>
4b3c58f3 262#if defined(RTE_LIBRTE_VHOST_NUMA) || defined(RTE_EAL_NUMA_AWARE_HUGEPAGES)
435aaddd
CL		 263#error
264#endif
265 ], [])
266 ], [],
267 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0 268 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 269
4b88d678
CL		 270 AC_COMPILE_IFELSE([
271 AC_LANG_PROGRAM(
272 [
273 #include <rte_config.h>
274#if RTE_LIBRTE_PMD_PCAP
275#error
276#endif
277 ], [])
278 ], [],
279 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
4b88d678
CL		 280 AC_COMPILE_IFELSE([
281 AC_LANG_PROGRAM(
282 [
283 #include <rte_config.h>
284#if RTE_LIBRTE_PDUMP
285#error
286#endif
287 ], [])
288 ], [],
289 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
290 ])
291
fc3b425f
TR		 292 AC_COMPILE_IFELSE([
293 AC_LANG_PROGRAM(
294 [
295 #include <rte_config.h>
296#if RTE_LIBRTE_MLX5_PMD
297#error
298#endif
299 ], [])
300 ], [],
301 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])
fc3b425f
TR		 302 AC_DEFINE([DPDK_MNL], [1], [MLX5 PMD detected in DPDK.])])
303
939bad9a
EB		 304 AC_COMPILE_IFELSE([
305 AC_LANG_PROGRAM(
306 [
307 #include <rte_config.h>
308#if defined(RTE_LIBRTE_MLX5_PMD) && !defined(RTE_LIBRTE_MLX5_DLOPEN_DEPS)
309#error
310#endif
311 ], [])
312 ], [],
313 [AC_SEARCH_LIBS([mlx5dv_create_wq],[mlx5],[],[AC_MSG_ERROR([unable to find libmlx5, install the dependency package])])])
314
315 AC_COMPILE_IFELSE([
316 AC_LANG_PROGRAM(
317 [
318 #include <rte_config.h>
319#if defined(RTE_LIBRTE_MLX5_PMD) && !defined(RTE_LIBRTE_MLX5_DLOPEN_DEPS)
320#error
321#endif
322 ], [])
323 ], [],
324 [AC_SEARCH_LIBS([verbs_init_cq],[ibverbs],[],[AC_MSG_ERROR([unable to find libibverbs, install the dependency package])])])
325
c1223b11
DDP		 326 # On some systems we have to add -ldl to link with dpdk
327 #
328 # This code, at first, tries to link without -ldl (""),
329 # then adds it and tries again.
330 # Before each attempt the search cache must be unset,
331 # otherwise autoconf will stick with the old result
332
40b5ea86 333 DPDKLIB_FOUND=false
c1223b11
DDP		 334 save_LIBS=$LIBS
335 for extras in "" "-ldl"; do
47ab42a0 336 LIBS="$DPDK_LIB $extras $save_LIBS"
c1223b11
DDP		 337 AC_LINK_IFELSE(
338 [AC_LANG_PROGRAM([#include <rte_config.h>
339 #include <rte_eal.h>],
340 [int rte_argc; char ** rte_argv;
341 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 342 [DPDKLIB_FOUND=true])
343 if $DPDKLIB_FOUND; then
c1223b11
DDP		 344 break
345 fi
346 done
40b5ea86
BB		 347
348 # If linking unsuccessful
349 if test "$DPDKLIB_FOUND" = "false" ; then
350 if $DPDK_AUTO_DISCOVER; then
351 AC_MSG_ERROR([Could not find DPDK library in default search path, Use --with-dpdk to specify the DPDK library installed in non-standard location])
352 else
353 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
354 fi
c1223b11 355 fi
95626395
TG		 356 CFLAGS="$ovs_save_CFLAGS"
357 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 358 if test "$DPDK_AUTO_DISCOVER" = "false"; then
359 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
360 fi
96195c09 361 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 362 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 363
3c94676c 364 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 365 #
366 # This happens because the rest of the DPDK code doesn't use any symbol in
367 # the pmd driver objects, and the drivers register themselves using an
368 # __attribute__((constructor)) function.
369 #
370 # These options are specified inside a single -Wl directive to prevent
371 # autotools from reordering them.
5b5aa2d8
CE		 372 #
373 # OTOH newer versions of dpdk pkg-config (generated with Meson)
374 # will already have flagged just the right set of libs with
375 # --whole-archive - in those cases do not wrap it once more.
376 case "$DPDK_LIB" in
377 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
378 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
379 esac
9475dfeb 380 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 381 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 382 fi
383
40b5ea86 384 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 385])
386
8828e5c7 387dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 388dnl
389dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 390dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
391dnl <REGEX> translated to uppercase.
064af421
BP		 392AC_DEFUN([OVS_GREP_IFELSE], [
393 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 394 if test -f $1; then
395 grep '$2' $1 >/dev/null 2>&1
396 status=$?
397 case $status in
997d327d 398 0)
7507ec48 399 AC_MSG_RESULT([yes])
8828e5c7 400 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 401 ;;
997d327d 402 1)
7507ec48
JG		 403 AC_MSG_RESULT([no])
404 $4
405 ;;
997d327d 406 *)
7507ec48
JG		 407 AC_MSG_ERROR([grep exited with status $status])
408 ;;
409 esac
410 else
411 AC_MSG_RESULT([file not found])
412 $4
413 fi
064af421
BP		 414])
415
13dd4a97
JS		 416dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
417dnl
418dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
419dnl structure definition. If this is successful, runs IF-MATCH, otherwise
420dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
421dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
422dnl translated to uppercase.
423AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
424 AC_MSG_CHECKING([whether $2 has member $3 in $1])
425 if test -f $1; then
83a27884 426 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 427 status=$?
428 case $status in
429 0)
430 AC_MSG_RESULT([yes])
431 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
432 ;;
433 1)
434 AC_MSG_RESULT([no])
435 $5
436 ;;
437 *)
438 AC_MSG_ERROR([grep exited with status $status])
439 ;;
440 esac
441 else
442 AC_MSG_RESULT([file not found])
443 $5
444 fi
445])
446
71ce9edd
JR		 447dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
448dnl
449dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
450dnl the function signature starting from the line matching FUNCTION
451dnl and ending with the line containing the closing parenthesis. If
452dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
453dnl IF-MATCH is empty then it defines to
454dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
455dnl <REGEX> translated to uppercase.
456AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
457 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
458 if test -f $1; then
459 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
460 status=$?
461 case $status in
462 0)
463 AC_MSG_RESULT([yes])
464 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
465 ;;
466 1)
467 AC_MSG_RESULT([no])
468 $5
469 ;;
470 *)
471 AC_MSG_ERROR([grep exited with status $status])
472 ;;
473 esac
474 else
475 AC_MSG_RESULT([file not found])
476 $5
477 fi
478])
479
064af421
BP		 480dnl OVS_DEFINE(NAME)
481dnl
482dnl Defines NAME to 1 in kcompat.h.
483AC_DEFUN([OVS_DEFINE], [
22bcc0e7 484 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 485])
486
e3438006 487dnl OVS_CHECK_LINUX_COMPAT
064af421 488dnl
8063e095 489dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 490dnl the directory in $KBUILD.
491AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 492 rm -f datapath/linux/kcompat.h.new
493 mkdir -p datapath/linux
494 : > datapath/linux/kcompat.h.new
4aa13c0c 495
e23775f2
PS		 496 echo '#include <linux/version.h>
497#ifndef RHEL_RELEASE_CODE
498#define RHEL_RELEASE_CODE 0
499#define RHEL_RELEASE_VERSION(a, b) 0
500#endif' >> datapath/linux/kcompat.h.new
501
e3438006 502 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 503 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
504
db1dcb23
DB		 505 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
506 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
507
e23775f2
PS		 508 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
509 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
510 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
511
e3438006 512 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 513 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 514 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 515
8aef057b 516 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 517 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 518 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
519 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 520
d923a695 521 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 522 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 523
e23775f2
PS		 524 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
525 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
526 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 527 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 528 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 529
e3438006 530 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 531 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 532 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
533 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 534 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
535 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
536
13dd4a97
JS		 537 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
538 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 539 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
540 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 541 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
542 [ip_do_fragment], [net],
543 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 544 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
545 [ip_local_out], [net],
546 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
547
cfda4537 548 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 549
550 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
551 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 552 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 553 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
554 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 555 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
556 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 557 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 558 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 559 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
560 [frags_work])
d1c390e6
JS		 561 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
562 [rwlock])
e0d45da3
JS		 563 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
564 [list_evictor])
38f45380 565 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 566 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
567 [sub_frag_mem_limit], [struct.netns_frags],
568 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
569 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
570 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 571 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
572 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 573
f2252c61
PS		 574 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
575 dnl OVS does not really need ipv6 label field, but its presence signifies that
576 dnl the stack has all required ipv6 support.
577 dnl OVS also does not need dst_cache But this dependency allows us to write
578 dnl much cleaner code.
579
3259c4ff
PS		 580 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
581 [label],
582 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
583 [iptunnel_pull_offloads],
997d327d 584 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 585 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
586 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 587
138df3e5
GR		 588 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
589 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 590 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
591 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 592 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
593 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 594 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 595 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
596 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
597 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 598 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 599 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 600 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 601 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 602 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 603 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
604 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 605 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
606 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 607 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 608 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 609 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
610 dnl So check type of tstats.
611 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
612 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 613 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
614 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 615 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 616 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
617 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
618 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
619 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 620 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 621 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
622 [extended])
7efb1e09
PS		 623 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
624 [netdev_master_upper_dev_link], [upper_priv],
625 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 626 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
627 [netdev_master_upper_dev_link_rh],
628 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
629
6c0bf091
JW		 630 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
631 [max_mtu])
39ca3383
YHW		 632 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
633 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 634
635 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
636 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 637 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
638 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 639 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
640 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
641 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
642 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 643 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
644
0643a78b 645
e4e04c3b 646 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 647 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 648
6d9b6937
JR		 649 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
650 [nf_conn], [struct timer_list[[ \t]]*timeout],
651 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
652 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
653 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
654
71ce9edd
JR		 655 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
656 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 657 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 658 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
659 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 660 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 661 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
662 [nf_ct_set])
56ec5593
JS		 663 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
664 [nf_ct_is_untracked])
ac9cd0d2
JS		 665 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
666 [nf_ct_zone_init])
eca4cde0
YS		 667 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
668 [net_ns_get])
459064e7
JS		 669 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
670 [nf_connlabels_get])
7f2ab8cd
JR		 671 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
672 [nf_connlabels_get], [int bit],
673 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 674 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
675 [nf_conn_labels], [words])
0d330e42
JR		 676 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
677 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 678 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 679 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 680 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
681 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 682
e2f3178f 683 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 684 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 685
e23775f2
PS		 686 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
687 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
688 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
689 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
690 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
691
e3438006
BP		 692 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
693 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 694 [rcu_read_lock_held])])
8fa52250 695 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 696 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 697
6a33828d
BP		 698 # Check for the proto_data_valid member in struct sk_buff. The [^@]
699 # is necessary because some versions of this header remove the
700 # member but retain the kerneldoc comment that describes it (which
701 # starts with @). The brackets must be doubled because of m4
702 # quoting rules.
e3438006 703 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 704 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 708 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 711 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
712 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 713 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 714 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 715 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 716 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 717 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
718 [skb_reset_tail_pointer])
e3438006 719 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 720 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 721 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 722 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 723 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 724 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 725 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 726 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 727 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 728 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 729 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
730 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 731 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 732 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
733 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 734 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
735 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 736 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 737 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 738 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 739 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 740 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 741 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 742 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 743 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 744 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 745
e3438006 746 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 747 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 748 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 749 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 750 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
751 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 752
e3438006
BP		 753 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
754 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 755
0d03e51c 756 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 757 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 758
114fce23
SG		 759 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
760 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 761 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 762 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
763 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 764 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 765 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
766 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 767 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
768 [genl_notify], [net],
769 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
770
13dd4a97
JS		 771
772 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
773 [genl_multicast_group], [id])
fdce83a3 774 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 775
cc1d0dea 776 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 777 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 778 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 779 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 780 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 781 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
782 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 783 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
784 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
785
91b37647 786 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 787 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 788 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
789 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
790 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 791 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 792 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 793 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 794 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
795 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 796 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
797 [nla_parse], [netlink_ext_ack],
798 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 799
c4e976db
JG		 800 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
801
e3438006 802 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 803 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 804 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 805 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 806 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 807 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 808 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 809
aadd6ae9
JS		 810 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
811 [metadata_dst_alloc], [metadata_type])
812
09f27436
JG		 813 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
814
3174a818
TG		 815 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
816 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 817 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 818 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
819 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
820 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 821 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 822 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
823 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 824 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
825 [gro_receive])
e23775f2
PS		 826
827 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 828 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
829 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
830 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 831
b7ebebcd
PS		 832 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
833 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 834 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
835 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 836 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
837 [udp_add_offload], [net],
838 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 839 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
840 [nf_defrag_ipv6_enable], [net],
841 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 842 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
843 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 844 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
845 [needs_free_netdev],
846 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 847 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
848 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 849 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 850 [nf_conntrack_helper_put],
851 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 853 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 854 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
855 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 856 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
857 [extack],
858 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 859 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
860 [list],
861 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 862 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
863 [IP_CT_UNTRACKED])
36d3520b
GR		 864 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
865 [netdev_master_upper_dev_link], [extack],
866 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 867 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
868 [__LINUX_COMPILER_TYPES_H],
869 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 870 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
871 [ktime_get_ts64],
872 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 873 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
874 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
875 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 876 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
877 [ktime_get_ns],
878 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 879 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
880 frag_percpu_counter_batch[],
881 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 882 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
883 [null_compute_pseudo],
884 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
885 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
886 [__skb_checksum_convert],
887 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
888 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
889 [max_mtu],
890 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 891 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
892 [erspan_ver],
893 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
894 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
895 [SKB_GSO_IPXIP6],
896 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
897 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
898 [ip6_make_flowlabel], [fl6],
899 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
900 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
901 [auto_flowlabels],
902 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
903 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
904 [netif_keep_dst],
905 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
906 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
907 [ndo_get_iflink],
908 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
909 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
910 [skb_set_inner_ipproto],
911 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
912 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
913 [tunnel_encap_types],
914 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
915 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
916 [IFLA_IPTUN_ENCAP_TYPE],
917 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
918 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
919 [IFLA_IPTUN_COLLECT_METADATA],
920 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 921 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
922 [IFLA_GRE_ENCAP_DPORT])
923 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
924 [IFLA_GRE_COLLECT_METADATA])
925 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
926 [IFLA_GRE_IGNORE_DF])
927 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
928 [IFLA_GRE_FWMARK])
929 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
930 [IFLA_GRE_ERSPAN_INDEX])
931 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
932 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 933 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
934 [IFLA_IPTUN_FWMARK])
10f24236
GR		 935 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
936 [csum_valid],
937 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
938 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
939 [skb_checksum_simple_validate])
44a629b5
GR		 940 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
941 [void.*ndo_get_stats64],
942 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 943 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
944 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 945 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
946 [ip_tunnel_info_opts_set], [flags],
947 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 948 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
949 [rnd],
950 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
21a719d6 951
22bcc0e7
JG		 952 if cmp -s datapath/linux/kcompat.h.new \
953 datapath/linux/kcompat.h >/dev/null 2>&1; then
954 rm datapath/linux/kcompat.h.new
064af421 955 else
22bcc0e7 956 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 957 fi
958])
959
f6eb6b20 960dnl Checks for net/if_dl.h.
d30e714c 961dnl
d23fa2ed
YT		 962dnl (We use this as a proxy for checking whether we're building on FreeBSD
963dnl or NetBSD.)
9360d9b7
EM		 964AC_DEFUN([OVS_CHECK_IF_DL],
965 [AC_CHECK_HEADER([net/if_dl.h],
966 [HAVE_IF_DL=yes],
967 [HAVE_IF_DL=no])
968 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
969 if test "$HAVE_IF_DL" = yes; then
970 AC_DEFINE([HAVE_IF_DL], [1],
971 [Define to 1 if net/if_dl.h is available.])
d30e714c 972
d23fa2ed 973 # On these platforms we use libpcap to access network devices.
d30e714c 974 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 975 fi])
976
e50097d2
BP		 977dnl Checks for buggy strtok_r.
978dnl
979dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
980dnl with optimization that can cause segfaults:
981dnl
982dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
983AC_DEFUN([OVS_CHECK_STRTOK_R],
984 [AC_CACHE_CHECK(
985 [whether strtok_r macro segfaults on some inputs],
986 [ovs_cv_strtok_r_bug],
987 [AC_RUN_IFELSE(
988 [AC_LANG_PROGRAM([#include <stdio.h>
989 #include <string.h>
990 ],
416e7132
BP		 991 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
992 /* Assume bug is present, because relatively minor
993 changes in compiler settings (e.g. optimization
994 level) can make it crop up. */
995 return 1;
996 #else
997 char string[] = ":::";
e50097d2
BP		 998 char *save_ptr = (char *) 0xc0ffee;
999 char *token1, *token2;
1000 token1 = strtok_r(string, ":", &save_ptr);
1001 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1002 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1003 printf ("%s %s\n", token1, token2);
1004 return 0;
416e7132 1005 #endif
e50097d2
BP		 1006 ]])],
1007 [ovs_cv_strtok_r_bug=no],
1008 [ovs_cv_strtok_r_bug=yes],
1009 [ovs_cv_strtok_r_bug=yes])])
1010 if test $ovs_cv_strtok_r_bug = yes; then
1011 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1012 [Define if strtok_r macro segfaults on some inputs])
1013 fi
1014])
1015
064af421
BP		 1016dnl ----------------------------------------------------------------------
1017dnl These macros are from GNU PSPP, with the following original license:
1018dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1019dnl This file is free software; the Free Software Foundation
1020dnl gives unlimited permission to copy and/or distribute it,
1021dnl with or without modifications, as long as this notice is preserved.
1022
50194820 1023AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1024 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1025 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1026 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1027 dnl Include -Werror in the compiler options, because without -Werror
1028 dnl clang's GCC-compatible compiler driver does not return a failure
1029 dnl exit status even though it complains about options it does not
1030 dnl understand.
c2deac54
YT		 1031 dnl
1032 dnl Also, check stderr as gcc exits with status 0 for options
1033 dnl rejected at getopt level.
1034 dnl % touch /tmp/a.c
1035 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1036 dnl gcc: unrecognized option '-Qunused-arguments'
1037 dnl 0
1038 dnl %
4c1e8cb9
BP		 1039 dnl
1040 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1041 dnl it does not understand, unless it has another error to report, so
1042 dnl instead of testing for -Wno-<foo>, test for the positive version.
1043 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1044 AC_COMPILE_IFELSE(
1045 [AC_LANG_SOURCE([int x;])],
1046 [if test -s conftest.err && grep "unrecognized option" conftest.err
1047 then
1048 ovs_cv_name[]=no
1049 else
1050 ovs_cv_name[]=yes
1051 fi],
1052 [ovs_cv_name[]=no])
064af421
BP		 1053 CFLAGS="$ovs_save_CFLAGS"])
1054 if test $ovs_cv_name = yes; then
83f6c050 1055 m4_if([$2], [], [:], [$2])
064af421
BP		 1056 else
1057 m4_if([$3], [], [:], [$3])
1058 fi
1059])
1060
50194820
BP		 1061dnl OVS_CHECK_WERROR
1062dnl
1063dnl Check whether the C compiler accepts -Werror.
1064dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1065AC_DEFUN([OVS_CHECK_WERROR],
1066 [WERROR=
1067 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1068
1069dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1070dnl Check whether the given C compiler OPTION is accepted.
1071dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1072AC_DEFUN([OVS_CHECK_CC_OPTION],
1073 [AC_REQUIRE([OVS_CHECK_WERROR])
1074 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1075
064af421
BP		 1076dnl OVS_ENABLE_OPTION([OPTION])
1077dnl Check whether the given C compiler OPTION is accepted.
d161c099 1078dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1079dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1080AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1081 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1082 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1083
1084dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1085dnl Check whether the given C compiler OPTION is accepted.
1086dnl If so, enable the given Automake CONDITIONAL.
1087
1088dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1089AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1090 [OVS_CHECK_CC_OPTION(
1091 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1092 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1093dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1094
1095dnl Check for too-old XenServer.
1096AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1097 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1098 [if test -e /etc/redhat-release; then
1099 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1100 fi
1101 if test -z "$ovs_cv_xsversion"; then
1102 ovs_cv_xsversion=none
1103 fi])
1104 case $ovs_cv_xsversion in
1105 none)
1106 ;;
1107
1108 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1109 [[6-9]]* | dnl XenServer 6 or later
1110 5.[[7-9]]* | dnl XenServer 5.7 or later
1111 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1112 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1113 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1114 ;;
1115
1116 *)
1117 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1118 ;;
1119 esac])
29d935d6 1120
643c0c34
BP		 1121dnl OVS_CHECK_SPARSE_TARGET
1122dnl
1123dnl The "cgcc" script from "sparse" isn't very good at detecting the
1124dnl target for which the code is being built. This helps it out.
1125AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1126 [AC_CACHE_CHECK(
1127 [target hint for cgcc],
1128 [ac_cv_sparse_target],
1129 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1130 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1131 [x86_64-*], [ac_cv_sparse_target=x86_64],
1132 [ac_cv_sparse_target=other])])
1133 AS_CASE([$ac_cv_sparse_target],
1134 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1135 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1136 [SPARSEFLAGS= CGCCFLAGS=])
1137 AC_SUBST([SPARSEFLAGS])
1138 AC_SUBST([CGCCFLAGS])])
1139
32e96ab7
AZ		 1140dnl OVS_SPARSE_EXTRA_INCLUDES
1141dnl
1142dnl The cgcc script from "sparse" does not search gcc's default
1143dnl search path. Get the default search path from GCC and pass
1144dnl them to sparse.
1145AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1146 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1147 [`$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 ' ' `] ))
1148
29d935d6
BP		 1149dnl OVS_ENABLE_SPARSE
1150AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1151 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1152 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1153 : ${SPARSE=sparse}
1154 AC_SUBST([SPARSE])
1155 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1156 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1157
1158 AC_ARG_ENABLE(
1159 [sparse],
1160 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1161 [], [enable_sparse=no])
1162 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1163
0eaaacac
FL		 1164dnl OVS_CTAGS_IDENTIFIERS
1165dnl
1166dnl ctags ignores symbols with extras identifiers. This builds a list of
1167dnl specially handled identifiers to be ignored.
1168AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1169 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1170 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1171
8a8cd0ac
BP		 1172dnl OVS_PTHREAD_SET_NAME
1173dnl
1174dnl This checks for three known variants of pthreads functions for setting
1175dnl the name of the current thread:
1176dnl
1177dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1178dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1179dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1180dnl
1181dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1182dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1183dnl provide to it.
1184dnl
1185dnl This macro defines:
1186dnl
1187dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1188dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1189dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1190AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1191 [AC_CHECK_FUNCS([pthread_set_name_np])
1192 if test $ac_cv_func_pthread_set_name_np != yes; then
1193 AC_CACHE_CHECK(
1194 [for pthread_setname_np() variant],
1195 [ovs_cv_pthread_setname_np],
1196 [AC_LINK_IFELSE(
a0903134 1197 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1198 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1199 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1200 [AC_LINK_IFELSE(
a0903134 1201 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1202], [pthread_setname_np(pthread_self(), "%s", "name");])],
1203 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1204 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1205 case $ovs_cv_pthread_setname_np in # (
1206 glibc)
a0903134
YT		 1207 AC_DEFINE(
1208 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1209 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1210 ;; # (
8a8cd0ac 1211 netbsd)
a0903134
YT		 1212 AC_DEFINE(
1213 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1214 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1215 ;;
8a8cd0ac
BP		 1216 esac
1217 fi])
5020f5f0
BP		 1218
1219dnl OVS_CHECK_LINUX_HOST.
1220dnl
1221dnl Checks whether we're building for a Linux host, based on the presence of
1222dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1223dnl LINUX based on the result.
1224AC_DEFUN([OVS_CHECK_LINUX_HOST],
1225 [AC_CACHE_CHECK(
1226 [whether __linux__ is defined],
1227 [ovs_cv_linux],
1228 [AC_COMPILE_IFELSE(
1229 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1230 [ovs_cv_linux=true],
1231 [ovs_cv_linux=false])])
1232 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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