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faq: Update OVS/DPDK version table for OVS 2.11.
[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 "$version" -ge 4; then
007ad72f 154 if test "$version" = 4 && test "$patchlevel" -le 18; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
007ad72f 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 "$with_dpdk" in
224 yes)
225 DPDK_AUTO_DISCOVER="true"
96195c09
CE		 226 PKG_CHECK_MODULES([DPDK], [libdpdk],
227 [DPDK_INCLUDE="$DPDK_CFLAGS"],
228 [DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"])
40b5ea86
BB		 229 ;;
230 *)
231 DPDK_AUTO_DISCOVER="false"
96195c09 232 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 233 # If 'with_dpdk' is passed install directory, point to headers
234 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 235 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
236 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
237 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
238 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 239 fi
40b5ea86
BB		 240 DPDK_LIB_DIR="$with_dpdk/lib"
241 ;;
242 esac
8a9562d2 243
18f777b2 244 DPDK_LIB="-ldpdk"
8a9562d2 245
95626395
TG		 246 ovs_save_CFLAGS="$CFLAGS"
247 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 248 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 249 if test "$DPDK_AUTO_DISCOVER" = "false"; then
250 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
251 fi
252
435aaddd
CL		 253 AC_COMPILE_IFELSE([
254 AC_LANG_PROGRAM(
255 [
256 #include <rte_config.h>
e5d0725a 257#if defined(RTE_LIBRTE_VHOST_NUMA) || defined(RTE_EAL_NUMA_AWARE_HUGEPAGES)
435aaddd
CL		 258#error
259#endif
260 ], [])
261 ], [],
262 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0 263 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 264
4b88d678
CL		 265 AC_COMPILE_IFELSE([
266 AC_LANG_PROGRAM(
267 [
268 #include <rte_config.h>
269#if RTE_LIBRTE_PMD_PCAP
270#error
271#endif
272 ], [])
273 ], [],
274 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
4b88d678
CL		 275 AC_COMPILE_IFELSE([
276 AC_LANG_PROGRAM(
277 [
278 #include <rte_config.h>
279#if RTE_LIBRTE_PDUMP
280#error
281#endif
282 ], [])
283 ], [],
284 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
285 ])
286
fc3b425f
TR		 287 AC_COMPILE_IFELSE([
288 AC_LANG_PROGRAM(
289 [
290 #include <rte_config.h>
291#if RTE_LIBRTE_MLX5_PMD
292#error
293#endif
294 ], [])
295 ], [],
296 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])
fc3b425f
TR		 297 AC_DEFINE([DPDK_MNL], [1], [MLX5 PMD detected in DPDK.])])
298
c1223b11
DDP		 299 # On some systems we have to add -ldl to link with dpdk
300 #
301 # This code, at first, tries to link without -ldl (""),
302 # then adds it and tries again.
303 # Before each attempt the search cache must be unset,
304 # otherwise autoconf will stick with the old result
305
40b5ea86 306 DPDKLIB_FOUND=false
c1223b11
DDP		 307 save_LIBS=$LIBS
308 for extras in "" "-ldl"; do
56a3b1db 309 LIBS="$DPDK_LIB $extras $save_LIBS"
c1223b11
DDP		 310 AC_LINK_IFELSE(
311 [AC_LANG_PROGRAM([#include <rte_config.h>
312 #include <rte_eal.h>],
313 [int rte_argc; char ** rte_argv;
314 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 315 [DPDKLIB_FOUND=true])
316 if $DPDKLIB_FOUND; then
c1223b11
DDP		 317 break
318 fi
319 done
40b5ea86
BB		 320
321 # If linking unsuccessful
322 if test "$DPDKLIB_FOUND" = "false" ; then
323 if $DPDK_AUTO_DISCOVER; then
324 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])
325 else
326 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
327 fi
c1223b11 328 fi
95626395
TG		 329 CFLAGS="$ovs_save_CFLAGS"
330 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 331 if test "$DPDK_AUTO_DISCOVER" = "false"; then
332 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
333 fi
96195c09 334 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 335 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 336
3c94676c 337 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 338 #
339 # This happens because the rest of the DPDK code doesn't use any symbol in
340 # the pmd driver objects, and the drivers register themselves using an
341 # __attribute__((constructor)) function.
342 #
343 # These options are specified inside a single -Wl directive to prevent
344 # autotools from reordering them.
3c94676c 345 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 346 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 347 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 348 fi
349
40b5ea86 350 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 351])
352
8828e5c7 353dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 354dnl
355dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 356dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
357dnl <REGEX> translated to uppercase.
064af421
BP		 358AC_DEFUN([OVS_GREP_IFELSE], [
359 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 360 if test -f $1; then
361 grep '$2' $1 >/dev/null 2>&1
362 status=$?
363 case $status in
997d327d 364 0)
7507ec48 365 AC_MSG_RESULT([yes])
8828e5c7 366 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 367 ;;
997d327d 368 1)
7507ec48
JG		 369 AC_MSG_RESULT([no])
370 $4
371 ;;
997d327d 372 *)
7507ec48
JG		 373 AC_MSG_ERROR([grep exited with status $status])
374 ;;
375 esac
376 else
377 AC_MSG_RESULT([file not found])
378 $4
379 fi
064af421
BP		 380])
381
13dd4a97
JS		 382dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
383dnl
384dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
385dnl structure definition. If this is successful, runs IF-MATCH, otherwise
386dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
387dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
388dnl translated to uppercase.
389AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
390 AC_MSG_CHECKING([whether $2 has member $3 in $1])
391 if test -f $1; then
83a27884 392 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 393 status=$?
394 case $status in
395 0)
396 AC_MSG_RESULT([yes])
397 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
398 ;;
399 1)
400 AC_MSG_RESULT([no])
401 $5
402 ;;
403 *)
404 AC_MSG_ERROR([grep exited with status $status])
405 ;;
406 esac
407 else
408 AC_MSG_RESULT([file not found])
409 $5
410 fi
411])
412
71ce9edd
JR		 413dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
414dnl
415dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
416dnl the function signature starting from the line matching FUNCTION
417dnl and ending with the line containing the closing parenthesis. If
418dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
419dnl IF-MATCH is empty then it defines to
420dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
421dnl <REGEX> translated to uppercase.
422AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
423 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
424 if test -f $1; then
425 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
426 status=$?
427 case $status in
428 0)
429 AC_MSG_RESULT([yes])
430 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
431 ;;
432 1)
433 AC_MSG_RESULT([no])
434 $5
435 ;;
436 *)
437 AC_MSG_ERROR([grep exited with status $status])
438 ;;
439 esac
440 else
441 AC_MSG_RESULT([file not found])
442 $5
443 fi
444])
445
064af421
BP		 446dnl OVS_DEFINE(NAME)
447dnl
448dnl Defines NAME to 1 in kcompat.h.
449AC_DEFUN([OVS_DEFINE], [
22bcc0e7 450 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 451])
452
e3438006 453dnl OVS_CHECK_LINUX_COMPAT
064af421 454dnl
8063e095 455dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 456dnl the directory in $KBUILD.
457AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 458 rm -f datapath/linux/kcompat.h.new
459 mkdir -p datapath/linux
460 : > datapath/linux/kcompat.h.new
4aa13c0c 461
e23775f2
PS		 462 echo '#include <linux/version.h>
463#ifndef RHEL_RELEASE_CODE
464#define RHEL_RELEASE_CODE 0
465#define RHEL_RELEASE_VERSION(a, b) 0
466#endif' >> datapath/linux/kcompat.h.new
467
e3438006 468 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 469 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
470
db1dcb23
DB		 471 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
472 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
473
e23775f2
PS		 474 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
475 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
476 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
477
e3438006 478 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 479 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 480 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 481
8aef057b 482 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 483 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 484 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
485 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 486
d923a695 487 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 488 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 489
e23775f2
PS		 490 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
491 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
492 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 493 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 494 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 495
e3438006 496 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 497 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 498 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
499 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 500 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
501 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
502
13dd4a97
JS		 503 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
504 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 505 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
506 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 507 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
508 [ip_do_fragment], [net],
509 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 510 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
511 [ip_local_out], [net],
512 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
513
cfda4537 514 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 515
516 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
517 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 518 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 519 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
520 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 521 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
522 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 523 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 524 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 525 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
526 [frags_work])
d1c390e6
JS		 527 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
528 [rwlock])
e0d45da3
JS		 529 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
530 [list_evictor])
38f45380 531 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 532 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
533 [sub_frag_mem_limit], [struct.netns_frags],
534 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
535 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
536 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 537 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
538 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 539
f2252c61
PS		 540 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
541 dnl OVS does not really need ipv6 label field, but its presence signifies that
542 dnl the stack has all required ipv6 support.
543 dnl OVS also does not need dst_cache But this dependency allows us to write
544 dnl much cleaner code.
545
3259c4ff
PS		 546 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
547 [label],
548 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
549 [iptunnel_pull_offloads],
997d327d 550 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 551 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
552 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 553
138df3e5
GR		 554 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
555 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 556 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
557 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 558 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
559 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 560 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 561 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
562 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
563 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 564 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 565 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 566 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 567 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 568 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 569 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
570 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 571 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
572 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 573 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 574 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 575 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
576 dnl So check type of tstats.
577 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
578 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 579 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
580 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 581 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 582 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
584 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 586 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 587 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
588 [extended])
7efb1e09
PS		 589 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
590 [netdev_master_upper_dev_link], [upper_priv],
591 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 592 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
593 [netdev_master_upper_dev_link_rh],
594 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
595
6c0bf091
JW		 596 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
597 [max_mtu])
39ca3383
YHW		 598 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
599 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 600
601 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
602 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 603 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
604 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 605 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
606 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
607 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
608 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 609 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
610
0643a78b 611
e4e04c3b 612 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 613 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 614
6d9b6937
JR		 615 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
616 [nf_conn], [struct timer_list[[ \t]]*timeout],
617 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
618 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
619 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
620
71ce9edd
JR		 621 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
622 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 623 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 624 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
625 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 626 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 627 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
628 [nf_ct_set])
56ec5593
JS		 629 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
630 [nf_ct_is_untracked])
ac9cd0d2
JS		 631 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
632 [nf_ct_zone_init])
eca4cde0
YS		 633 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
634 [net_ns_get])
459064e7
JS		 635 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
636 [nf_connlabels_get])
7f2ab8cd
JR		 637 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
638 [nf_connlabels_get], [int bit],
639 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 640 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
641 [nf_conn_labels], [words])
0d330e42
JR		 642 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
643 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 644 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 645 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 646 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
647 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 648
e2f3178f 649 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 650 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 651
e23775f2
PS		 652 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
653 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
654 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
655 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
656 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
657
e3438006
BP		 658 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
659 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 660 [rcu_read_lock_held])])
8fa52250 661 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 662 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 663
6a33828d
BP		 664 # Check for the proto_data_valid member in struct sk_buff. The [^@]
665 # is necessary because some versions of this header remove the
666 # member but retain the kerneldoc comment that describes it (which
667 # starts with @). The brackets must be doubled because of m4
668 # quoting rules.
e3438006 669 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 670 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 671 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 672 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 673 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 674 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 675 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 676 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 677 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
678 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 679 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 680 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 681 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 682 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 683 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
684 [skb_reset_tail_pointer])
e3438006 685 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 686 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 687 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 688 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 689 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 690 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 691 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 692 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 693 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 694 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 695 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
696 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 697 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 698 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
699 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 700 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
701 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 702 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 703 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 708 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 711
e3438006 712 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 713 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 714 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 715 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 716 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
717 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 718
e3438006
BP		 719 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
720 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 721
0d03e51c 722 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 723 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 724
114fce23
SG		 725 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
726 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 727 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 728 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
729 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 730 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 731 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
732 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 733 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
734 [genl_notify], [net],
735 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
736
13dd4a97
JS		 737
738 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
739 [genl_multicast_group], [id])
fdce83a3 740 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 741
cc1d0dea 742 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 743 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 744 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 745 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 746 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 747 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
748 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 749 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
750 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
751
91b37647 752 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 753 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 754 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
755 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
756 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 757 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 758 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 759 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 760 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
761 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 762 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
763 [nla_parse], [netlink_ext_ack],
764 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 765
c4e976db
JG		 766 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
767
e3438006 768 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 769 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 770 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 771 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 772 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 773 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 774 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 775
aadd6ae9
JS		 776 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
777 [metadata_dst_alloc], [metadata_type])
778
09f27436
JG		 779 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
780
3174a818
TG		 781 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
782 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 783 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 784 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
785 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
786 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 787 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 788 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
789 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 790 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
791 [gro_receive])
e23775f2
PS		 792
793 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 794 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
795 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
796 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 797
b7ebebcd
PS		 798 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
799 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 800 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
801 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 802 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
803 [udp_add_offload], [net],
804 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 805 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
806 [nf_defrag_ipv6_enable], [net],
807 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 808 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
809 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 810 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
811 [needs_free_netdev],
812 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 813 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
814 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 815 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 816 [nf_conntrack_helper_put],
817 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 818 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 819 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 820 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
821 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 822 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
823 [extack],
824 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 825 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
826 [list],
827 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 828 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
829 [IP_CT_UNTRACKED])
36d3520b
GR		 830 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
831 [netdev_master_upper_dev_link], [extack],
832 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 833 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
834 [__LINUX_COMPILER_TYPES_H],
835 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 836 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
837 [ktime_get_ts64],
838 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 839 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
840 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
841 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 842 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
843 [ktime_get_ns],
844 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 845 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
846 frag_percpu_counter_batch[],
847 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 848 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
849 [null_compute_pseudo],
850 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
851 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
852 [__skb_checksum_convert],
853 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
854 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
855 [max_mtu],
856 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 857 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
858 [erspan_ver],
859 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
860 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
861 [SKB_GSO_IPXIP6],
862 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
863 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
864 [ip6_make_flowlabel], [fl6],
865 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
866 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
867 [auto_flowlabels],
868 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
869 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
870 [netif_keep_dst],
871 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
872 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
873 [ndo_get_iflink],
874 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
875 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
876 [skb_set_inner_ipproto],
877 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
878 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
879 [tunnel_encap_types],
880 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
881 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
882 [IFLA_IPTUN_ENCAP_TYPE],
883 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
884 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
885 [IFLA_IPTUN_COLLECT_METADATA],
886 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 887 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
888 [IFLA_GRE_ENCAP_DPORT])
889 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
890 [IFLA_GRE_COLLECT_METADATA])
891 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
892 [IFLA_GRE_IGNORE_DF])
893 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
894 [IFLA_GRE_FWMARK])
895 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
896 [IFLA_GRE_ERSPAN_INDEX])
897 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
898 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 899 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
900 [IFLA_IPTUN_FWMARK])
10f24236
GR		 901 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
902 [csum_valid],
903 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
904 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
905 [skb_checksum_simple_validate])
44a629b5
GR		 906 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
907 [void.*ndo_get_stats64],
908 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 909 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
910 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 911 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
912 [ip_tunnel_info_opts_set], [flags],
913 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
f22ca801
GR		 914 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
915 [rnd],
916 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
21a719d6 917
22bcc0e7
JG		 918 if cmp -s datapath/linux/kcompat.h.new \
919 datapath/linux/kcompat.h >/dev/null 2>&1; then
920 rm datapath/linux/kcompat.h.new
064af421 921 else
22bcc0e7 922 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 923 fi
924])
925
f6eb6b20 926dnl Checks for net/if_dl.h.
d30e714c 927dnl
d23fa2ed
YT		 928dnl (We use this as a proxy for checking whether we're building on FreeBSD
929dnl or NetBSD.)
9360d9b7
EM		 930AC_DEFUN([OVS_CHECK_IF_DL],
931 [AC_CHECK_HEADER([net/if_dl.h],
932 [HAVE_IF_DL=yes],
933 [HAVE_IF_DL=no])
934 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
935 if test "$HAVE_IF_DL" = yes; then
936 AC_DEFINE([HAVE_IF_DL], [1],
937 [Define to 1 if net/if_dl.h is available.])
d30e714c 938
d23fa2ed 939 # On these platforms we use libpcap to access network devices.
d30e714c 940 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 941 fi])
942
e50097d2
BP		 943dnl Checks for buggy strtok_r.
944dnl
945dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
946dnl with optimization that can cause segfaults:
947dnl
948dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
949AC_DEFUN([OVS_CHECK_STRTOK_R],
950 [AC_CACHE_CHECK(
951 [whether strtok_r macro segfaults on some inputs],
952 [ovs_cv_strtok_r_bug],
953 [AC_RUN_IFELSE(
954 [AC_LANG_PROGRAM([#include <stdio.h>
955 #include <string.h>
956 ],
416e7132
BP		 957 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
958 /* Assume bug is present, because relatively minor
959 changes in compiler settings (e.g. optimization
960 level) can make it crop up. */
961 return 1;
962 #else
963 char string[] = ":::";
e50097d2
BP		 964 char *save_ptr = (char *) 0xc0ffee;
965 char *token1, *token2;
966 token1 = strtok_r(string, ":", &save_ptr);
967 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 968 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 969 printf ("%s %s\n", token1, token2);
970 return 0;
416e7132 971 #endif
e50097d2
BP		 972 ]])],
973 [ovs_cv_strtok_r_bug=no],
974 [ovs_cv_strtok_r_bug=yes],
975 [ovs_cv_strtok_r_bug=yes])])
976 if test $ovs_cv_strtok_r_bug = yes; then
977 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
978 [Define if strtok_r macro segfaults on some inputs])
979 fi
980])
981
064af421
BP		 982dnl ----------------------------------------------------------------------
983dnl These macros are from GNU PSPP, with the following original license:
984dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
985dnl This file is free software; the Free Software Foundation
986dnl gives unlimited permission to copy and/or distribute it,
987dnl with or without modifications, as long as this notice is preserved.
988
50194820 989AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 990 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 991 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
992 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 993 dnl Include -Werror in the compiler options, because without -Werror
994 dnl clang's GCC-compatible compiler driver does not return a failure
995 dnl exit status even though it complains about options it does not
996 dnl understand.
c2deac54
YT		 997 dnl
998 dnl Also, check stderr as gcc exits with status 0 for options
999 dnl rejected at getopt level.
1000 dnl % touch /tmp/a.c
1001 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1002 dnl gcc: unrecognized option '-Qunused-arguments'
1003 dnl 0
1004 dnl %
4c1e8cb9
BP		 1005 dnl
1006 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1007 dnl it does not understand, unless it has another error to report, so
1008 dnl instead of testing for -Wno-<foo>, test for the positive version.
1009 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1010 AC_COMPILE_IFELSE(
1011 [AC_LANG_SOURCE([int x;])],
1012 [if test -s conftest.err && grep "unrecognized option" conftest.err
1013 then
1014 ovs_cv_name[]=no
1015 else
1016 ovs_cv_name[]=yes
1017 fi],
1018 [ovs_cv_name[]=no])
064af421
BP		 1019 CFLAGS="$ovs_save_CFLAGS"])
1020 if test $ovs_cv_name = yes; then
83f6c050 1021 m4_if([$2], [], [:], [$2])
064af421
BP		 1022 else
1023 m4_if([$3], [], [:], [$3])
1024 fi
1025])
1026
50194820
BP		 1027dnl OVS_CHECK_WERROR
1028dnl
1029dnl Check whether the C compiler accepts -Werror.
1030dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1031AC_DEFUN([OVS_CHECK_WERROR],
1032 [WERROR=
1033 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1034
1035dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1036dnl Check whether the given C compiler OPTION is accepted.
1037dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1038AC_DEFUN([OVS_CHECK_CC_OPTION],
1039 [AC_REQUIRE([OVS_CHECK_WERROR])
1040 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1041
064af421
BP		 1042dnl OVS_ENABLE_OPTION([OPTION])
1043dnl Check whether the given C compiler OPTION is accepted.
d161c099 1044dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1045dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1046AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1047 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1048 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1049
1050dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1051dnl Check whether the given C compiler OPTION is accepted.
1052dnl If so, enable the given Automake CONDITIONAL.
1053
1054dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1055AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1056 [OVS_CHECK_CC_OPTION(
1057 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1058 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1059dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1060
1061dnl Check for too-old XenServer.
1062AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1063 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1064 [if test -e /etc/redhat-release; then
1065 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1066 fi
1067 if test -z "$ovs_cv_xsversion"; then
1068 ovs_cv_xsversion=none
1069 fi])
1070 case $ovs_cv_xsversion in
1071 none)
1072 ;;
1073
1074 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1075 [[6-9]]* | dnl XenServer 6 or later
1076 5.[[7-9]]* | dnl XenServer 5.7 or later
1077 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1078 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1079 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1080 ;;
1081
1082 *)
1083 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1084 ;;
1085 esac])
29d935d6 1086
643c0c34
BP		 1087dnl OVS_CHECK_SPARSE_TARGET
1088dnl
1089dnl The "cgcc" script from "sparse" isn't very good at detecting the
1090dnl target for which the code is being built. This helps it out.
1091AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1092 [AC_CACHE_CHECK(
1093 [target hint for cgcc],
1094 [ac_cv_sparse_target],
1095 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1096 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1097 [x86_64-*], [ac_cv_sparse_target=x86_64],
1098 [ac_cv_sparse_target=other])])
1099 AS_CASE([$ac_cv_sparse_target],
1100 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1101 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1102 [SPARSEFLAGS= CGCCFLAGS=])
1103 AC_SUBST([SPARSEFLAGS])
1104 AC_SUBST([CGCCFLAGS])])
1105
32e96ab7
AZ		 1106dnl OVS_SPARSE_EXTRA_INCLUDES
1107dnl
1108dnl The cgcc script from "sparse" does not search gcc's default
1109dnl search path. Get the default search path from GCC and pass
1110dnl them to sparse.
1111AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1112 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1113 [`$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 ' ' `] ))
1114
29d935d6
BP		 1115dnl OVS_ENABLE_SPARSE
1116AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1117 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1118 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1119 : ${SPARSE=sparse}
1120 AC_SUBST([SPARSE])
1121 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1122 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1123
1124 AC_ARG_ENABLE(
1125 [sparse],
1126 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1127 [], [enable_sparse=no])
1128 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1129
0eaaacac
FL		 1130dnl OVS_CTAGS_IDENTIFIERS
1131dnl
1132dnl ctags ignores symbols with extras identifiers. This builds a list of
1133dnl specially handled identifiers to be ignored.
1134AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1135 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1136 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1137
8a8cd0ac
BP		 1138dnl OVS_PTHREAD_SET_NAME
1139dnl
1140dnl This checks for three known variants of pthreads functions for setting
1141dnl the name of the current thread:
1142dnl
1143dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1144dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1145dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1146dnl
1147dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1148dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1149dnl provide to it.
1150dnl
1151dnl This macro defines:
1152dnl
1153dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1154dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1155dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1156AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1157 [AC_CHECK_FUNCS([pthread_set_name_np])
1158 if test $ac_cv_func_pthread_set_name_np != yes; then
1159 AC_CACHE_CHECK(
1160 [for pthread_setname_np() variant],
1161 [ovs_cv_pthread_setname_np],
1162 [AC_LINK_IFELSE(
a0903134 1163 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1164 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1165 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1166 [AC_LINK_IFELSE(
a0903134 1167 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1168], [pthread_setname_np(pthread_self(), "%s", "name");])],
1169 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1170 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1171 case $ovs_cv_pthread_setname_np in # (
1172 glibc)
a0903134
YT		 1173 AC_DEFINE(
1174 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1175 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1176 ;; # (
8a8cd0ac 1177 netbsd)
a0903134
YT		 1178 AC_DEFINE(
1179 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1180 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1181 ;;
8a8cd0ac
BP		 1182 esac
1183 fi])
5020f5f0
BP		 1184
1185dnl OVS_CHECK_LINUX_HOST.
1186dnl
1187dnl Checks whether we're building for a Linux host, based on the presence of
1188dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1189dnl LINUX based on the result.
1190AC_DEFUN([OVS_CHECK_LINUX_HOST],
1191 [AC_CACHE_CHECK(
1192 [whether __linux__ is defined],
1193 [ovs_cv_linux],
1194 [AC_COMPILE_IFELSE(
1195 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1196 [ovs_cv_linux=true],
1197 [ovs_cv_linux=false])])
1198 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
openvswitch packages for PVE