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ovn: Fix the invalid eth.dst and ip6.dst set by nd_ns action for certain cases.
[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 "$version" -ge 4; then
bf61b8b1 154 if test "$version" = 4 && test "$patchlevel" -le 17; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
bf61b8b1 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.17.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$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="$with_dpdk/lib"
241 ;;
242 esac
8a9562d2 243
18f777b2 244 DPDK_LIB="-ldpdk"
10d01ad2 245 DPDK_EXTRA_LIB=""
8a9562d2 246
95626395
TG		 247 ovs_save_CFLAGS="$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
435aaddd
CL		 254 AC_COMPILE_IFELSE([
255 AC_LANG_PROGRAM(
256 [
257 #include <rte_config.h>
258#if RTE_LIBRTE_VHOST_NUMA
259#error
260#endif
261 ], [])
262 ], [],
263 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0
CL		 264 DPDK_EXTRA_LIB="-lnuma"
265 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 266
4b88d678
CL		 267 AC_COMPILE_IFELSE([
268 AC_LANG_PROGRAM(
269 [
270 #include <rte_config.h>
271#if RTE_LIBRTE_PMD_PCAP
272#error
273#endif
274 ], [])
275 ], [],
276 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
277 DPDK_EXTRA_LIB="-lpcap"
278 AC_COMPILE_IFELSE([
279 AC_LANG_PROGRAM(
280 [
281 #include <rte_config.h>
282#if RTE_LIBRTE_PDUMP
283#error
284#endif
285 ], [])
286 ], [],
287 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
288 ])
289
fc3b425f
TR		 290 AC_COMPILE_IFELSE([
291 AC_LANG_PROGRAM(
292 [
293 #include <rte_config.h>
294#if RTE_LIBRTE_MLX5_PMD
295#error
296#endif
297 ], [])
298 ], [],
299 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])
300 DPDK_EXTRA_LIB="-lmnl"
301 AC_DEFINE([DPDK_MNL], [1], [MLX5 PMD detected in DPDK.])])
302
c1223b11
DDP		 303 # On some systems we have to add -ldl to link with dpdk
304 #
305 # This code, at first, tries to link without -ldl (""),
306 # then adds it and tries again.
307 # Before each attempt the search cache must be unset,
308 # otherwise autoconf will stick with the old result
309
40b5ea86 310 DPDKLIB_FOUND=false
c1223b11
DDP		 311 save_LIBS=$LIBS
312 for extras in "" "-ldl"; do
435aaddd 313 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 314 AC_LINK_IFELSE(
315 [AC_LANG_PROGRAM([#include <rte_config.h>
316 #include <rte_eal.h>],
317 [int rte_argc; char ** rte_argv;
318 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 319 [DPDKLIB_FOUND=true])
320 if $DPDKLIB_FOUND; then
c1223b11
DDP		 321 break
322 fi
323 done
40b5ea86
BB		 324
325 # If linking unsuccessful
326 if test "$DPDKLIB_FOUND" = "false" ; then
327 if $DPDK_AUTO_DISCOVER; then
328 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])
329 else
330 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
331 fi
c1223b11 332 fi
95626395
TG		 333 CFLAGS="$ovs_save_CFLAGS"
334 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 335 if test "$DPDK_AUTO_DISCOVER" = "false"; then
336 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
337 fi
96195c09 338 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 339 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 340
3c94676c 341 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 342 #
343 # This happens because the rest of the DPDK code doesn't use any symbol in
344 # the pmd driver objects, and the drivers register themselves using an
345 # __attribute__((constructor)) function.
346 #
347 # These options are specified inside a single -Wl directive to prevent
348 # autotools from reordering them.
3c94676c 349 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 350 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 351 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 352 fi
353
40b5ea86 354 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 355])
356
8828e5c7 357dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 358dnl
359dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 360dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
361dnl <REGEX> translated to uppercase.
064af421
BP		 362AC_DEFUN([OVS_GREP_IFELSE], [
363 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 364 if test -f $1; then
365 grep '$2' $1 >/dev/null 2>&1
366 status=$?
367 case $status in
997d327d 368 0)
7507ec48 369 AC_MSG_RESULT([yes])
8828e5c7 370 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 371 ;;
997d327d 372 1)
7507ec48
JG		 373 AC_MSG_RESULT([no])
374 $4
375 ;;
997d327d 376 *)
7507ec48
JG		 377 AC_MSG_ERROR([grep exited with status $status])
378 ;;
379 esac
380 else
381 AC_MSG_RESULT([file not found])
382 $4
383 fi
064af421
BP		 384])
385
13dd4a97
JS		 386dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
387dnl
388dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
389dnl structure definition. If this is successful, runs IF-MATCH, otherwise
390dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
391dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
392dnl translated to uppercase.
393AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
394 AC_MSG_CHECKING([whether $2 has member $3 in $1])
395 if test -f $1; then
83a27884 396 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 397 status=$?
398 case $status in
399 0)
400 AC_MSG_RESULT([yes])
401 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
402 ;;
403 1)
404 AC_MSG_RESULT([no])
405 $5
406 ;;
407 *)
408 AC_MSG_ERROR([grep exited with status $status])
409 ;;
410 esac
411 else
412 AC_MSG_RESULT([file not found])
413 $5
414 fi
415])
416
71ce9edd
JR		 417dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
418dnl
419dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
420dnl the function signature starting from the line matching FUNCTION
421dnl and ending with the line containing the closing parenthesis. If
422dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
423dnl IF-MATCH is empty then it defines to
424dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
425dnl <REGEX> translated to uppercase.
426AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
427 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
428 if test -f $1; then
429 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
430 status=$?
431 case $status in
432 0)
433 AC_MSG_RESULT([yes])
434 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
435 ;;
436 1)
437 AC_MSG_RESULT([no])
438 $5
439 ;;
440 *)
441 AC_MSG_ERROR([grep exited with status $status])
442 ;;
443 esac
444 else
445 AC_MSG_RESULT([file not found])
446 $5
447 fi
448])
449
064af421
BP		 450dnl OVS_DEFINE(NAME)
451dnl
452dnl Defines NAME to 1 in kcompat.h.
453AC_DEFUN([OVS_DEFINE], [
22bcc0e7 454 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 455])
456
e3438006 457dnl OVS_CHECK_LINUX_COMPAT
064af421 458dnl
8063e095 459dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 460dnl the directory in $KBUILD.
461AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 462 rm -f datapath/linux/kcompat.h.new
463 mkdir -p datapath/linux
464 : > datapath/linux/kcompat.h.new
4aa13c0c 465
e23775f2
PS		 466 echo '#include <linux/version.h>
467#ifndef RHEL_RELEASE_CODE
468#define RHEL_RELEASE_CODE 0
469#define RHEL_RELEASE_VERSION(a, b) 0
470#endif' >> datapath/linux/kcompat.h.new
471
e3438006 472 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 473 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
474
db1dcb23
DB		 475 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
476 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
477
e23775f2
PS		 478 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
479 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
480 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
481
e3438006 482 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 483 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 484 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 485
6660a959
YHW		 486 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
487 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
488
d923a695 489 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 490 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 491
e23775f2
PS		 492 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
493 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
494 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 495 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 496 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 497
e3438006 498 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 499 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 500 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
501 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 502 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
503 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
504
13dd4a97
JS		 505 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
506 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 507 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
508 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 509 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
510 [ip_do_fragment], [net],
511 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 512 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
513 [ip_local_out], [net],
514 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
515
cfda4537 516 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 517
518 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
519 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 520 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 521 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
522 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 523 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
524 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 525 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 526 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 527 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
528 [frags_work])
d1c390e6
JS		 529 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
530 [rwlock])
e0d45da3
JS		 531 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
532 [list_evictor])
38f45380 533 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 534 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
535 [sub_frag_mem_limit], [struct.netns_frags],
536 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
537 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
538 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 539 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
540 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 541
f2252c61
PS		 542 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
543 dnl OVS does not really need ipv6 label field, but its presence signifies that
544 dnl the stack has all required ipv6 support.
545 dnl OVS also does not need dst_cache But this dependency allows us to write
546 dnl much cleaner code.
547
3259c4ff
PS		 548 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
549 [label],
550 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
551 [iptunnel_pull_offloads],
997d327d 552 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 553 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
554 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 555
138df3e5
GR		 556 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
557 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 558 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
559 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 560 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
561 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 562 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 563 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
564 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
565 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 566 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 567 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 568 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 569 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 570 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 571 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
572 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 573 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
574 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 575 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 576 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 577 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
578 dnl So check type of tstats.
579 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
580 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 581 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
582 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 584 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
586 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
587 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 588 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 589 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
590 [extended])
7efb1e09
PS		 591 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
592 [netdev_master_upper_dev_link], [upper_priv],
593 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 594 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
595 [netdev_master_upper_dev_link_rh],
596 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
597
6c0bf091
JW		 598 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
599 [max_mtu])
39ca3383
YHW		 600 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
601 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 602
603 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
604 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 605 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
606 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 607 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
608 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
609 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
610 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 611 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
612
0643a78b 613
e4e04c3b 614 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 615 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 616
6d9b6937
JR		 617 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
618 [nf_conn], [struct timer_list[[ \t]]*timeout],
619 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
620 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
621 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
622
71ce9edd
JR		 623 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
624 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 625 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 626 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
627 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 628 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 629 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
630 [nf_ct_set])
56ec5593
JS		 631 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
632 [nf_ct_is_untracked])
ac9cd0d2
JS		 633 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
634 [nf_ct_zone_init])
179fccce
YHW		 635 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
636 [net_ns_get])
459064e7
JS		 637 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
638 [nf_connlabels_get])
7f2ab8cd
JR		 639 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
640 [nf_connlabels_get], [int bit],
641 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 642 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
643 [nf_conn_labels], [words])
0d330e42
JR		 644 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
645 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 646 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 647 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 648 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
649 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 650
e2f3178f 651 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 652 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 653
e23775f2
PS		 654 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
655 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
656 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
657 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
658 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
659
e3438006
BP		 660 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
661 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 662 [rcu_read_lock_held])])
8fa52250 663 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 664 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 665
6a33828d
BP		 666 # Check for the proto_data_valid member in struct sk_buff. The [^@]
667 # is necessary because some versions of this header remove the
668 # member but retain the kerneldoc comment that describes it (which
669 # starts with @). The brackets must be doubled because of m4
670 # quoting rules.
e3438006 671 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 672 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 673 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 674 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 675 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 676 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 677 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 678 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 679 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
680 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 681 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 682 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 683 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 684 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 685 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
686 [skb_reset_tail_pointer])
e3438006 687 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 688 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 689 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 690 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 691 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 692 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 693 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 694 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 695 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 696 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 697 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
698 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 699 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 700 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
701 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 702 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
703 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 708 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 711 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 712 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 713
e3438006 714 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 715 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 716 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 717 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 718 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
719 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 720
e3438006
BP		 721 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
722 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 723
0d03e51c 724 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 725 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 726
114fce23
SG		 727 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
728 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 729 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 730 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
731 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 732 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 733 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
734 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 735 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
736 [genl_notify], [net],
737 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
738
13dd4a97
JS		 739
740 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
741 [genl_multicast_group], [id])
fdce83a3 742 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 743
cc1d0dea 744 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 745 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 746 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 747 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 748 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 749 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
750 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 751 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
752 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
753
91b37647 754 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 755 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 756 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
757 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
758 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 759 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 760 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 761 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 762 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
763 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 764 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
765 [nla_parse], [netlink_ext_ack],
766 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 767
c4e976db
JG		 768 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
769
e3438006 770 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 771 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 772 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 773 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 774 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 775 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 776 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 777
aadd6ae9
JS		 778 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
779 [metadata_dst_alloc], [metadata_type])
780
09f27436
JG		 781 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
782
3174a818
TG		 783 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
784 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 785 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 786 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
787 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
788 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 789 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 790 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
791 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 792 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
793 [gro_receive])
e23775f2
PS		 794
795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 796 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
797 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
798 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 799
b7ebebcd
PS		 800 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
801 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 802 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
803 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 804 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
805 [udp_add_offload], [net],
806 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 807 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
808 [nf_defrag_ipv6_enable], [net],
809 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 810 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
811 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 812 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
813 [needs_free_netdev],
814 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 815 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
816 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 817 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 818 [nf_conntrack_helper_put],
819 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 820 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 821 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 822 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
823 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 824 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
825 [extack],
826 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 827 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
828 [list],
829 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 830 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
831 [IP_CT_UNTRACKED])
36d3520b
GR		 832 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
833 [netdev_master_upper_dev_link], [extack],
834 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 835 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
836 [__LINUX_COMPILER_TYPES_H],
837 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 838 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
839 [ktime_get_ts64],
840 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 841 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
842 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
843 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 844 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
845 [ktime_get_ns],
846 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 847 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
848 frag_percpu_counter_batch[],
849 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 850 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
851 [null_compute_pseudo],
852 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
853 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
854 [__skb_checksum_convert],
855 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
856 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
857 [max_mtu],
858 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 859 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
860 [erspan_ver],
861 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
862 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
863 [SKB_GSO_IPXIP6],
864 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
865 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
866 [ip6_make_flowlabel], [fl6],
867 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
868 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
869 [auto_flowlabels],
870 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
871 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
872 [netif_keep_dst],
873 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
874 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
875 [ndo_get_iflink],
876 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
877 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
878 [skb_set_inner_ipproto],
879 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
880 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
881 [tunnel_encap_types],
882 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
883 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
884 [IFLA_IPTUN_ENCAP_TYPE],
885 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
886 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
887 [IFLA_IPTUN_COLLECT_METADATA],
888 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 889 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
890 [IFLA_GRE_ENCAP_DPORT])
891 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
892 [IFLA_GRE_COLLECT_METADATA])
893 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
894 [IFLA_GRE_IGNORE_DF])
895 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
896 [IFLA_GRE_FWMARK])
897 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
898 [IFLA_GRE_ERSPAN_INDEX])
899 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
900 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 901 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
902 [IFLA_IPTUN_FWMARK])
10f24236
GR		 903 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
904 [csum_valid],
905 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
906 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
907 [skb_checksum_simple_validate])
44a629b5
GR		 908 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
909 [void.*ndo_get_stats64],
910 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 911 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
912 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 913 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
914 [ip_tunnel_info_opts_set], [flags],
915 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
21a719d6 916
22bcc0e7
JG		 917 if cmp -s datapath/linux/kcompat.h.new \
918 datapath/linux/kcompat.h >/dev/null 2>&1; then
919 rm datapath/linux/kcompat.h.new
064af421 920 else
22bcc0e7 921 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 922 fi
923])
924
f6eb6b20 925dnl Checks for net/if_dl.h.
d30e714c 926dnl
d23fa2ed
YT		 927dnl (We use this as a proxy for checking whether we're building on FreeBSD
928dnl or NetBSD.)
9360d9b7
EM		 929AC_DEFUN([OVS_CHECK_IF_DL],
930 [AC_CHECK_HEADER([net/if_dl.h],
931 [HAVE_IF_DL=yes],
932 [HAVE_IF_DL=no])
933 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
934 if test "$HAVE_IF_DL" = yes; then
935 AC_DEFINE([HAVE_IF_DL], [1],
936 [Define to 1 if net/if_dl.h is available.])
d30e714c 937
d23fa2ed 938 # On these platforms we use libpcap to access network devices.
d30e714c 939 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 940 fi])
941
e50097d2
BP		 942dnl Checks for buggy strtok_r.
943dnl
944dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
945dnl with optimization that can cause segfaults:
946dnl
947dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
948AC_DEFUN([OVS_CHECK_STRTOK_R],
949 [AC_CACHE_CHECK(
950 [whether strtok_r macro segfaults on some inputs],
951 [ovs_cv_strtok_r_bug],
952 [AC_RUN_IFELSE(
953 [AC_LANG_PROGRAM([#include <stdio.h>
954 #include <string.h>
955 ],
416e7132
BP		 956 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
957 /* Assume bug is present, because relatively minor
958 changes in compiler settings (e.g. optimization
959 level) can make it crop up. */
960 return 1;
961 #else
962 char string[] = ":::";
e50097d2
BP		 963 char *save_ptr = (char *) 0xc0ffee;
964 char *token1, *token2;
965 token1 = strtok_r(string, ":", &save_ptr);
966 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 967 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 968 printf ("%s %s\n", token1, token2);
969 return 0;
416e7132 970 #endif
e50097d2
BP		 971 ]])],
972 [ovs_cv_strtok_r_bug=no],
973 [ovs_cv_strtok_r_bug=yes],
974 [ovs_cv_strtok_r_bug=yes])])
975 if test $ovs_cv_strtok_r_bug = yes; then
976 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
977 [Define if strtok_r macro segfaults on some inputs])
978 fi
979])
980
064af421
BP		 981dnl ----------------------------------------------------------------------
982dnl These macros are from GNU PSPP, with the following original license:
983dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
984dnl This file is free software; the Free Software Foundation
985dnl gives unlimited permission to copy and/or distribute it,
986dnl with or without modifications, as long as this notice is preserved.
987
50194820 988AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 989 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 990 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
991 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 992 dnl Include -Werror in the compiler options, because without -Werror
993 dnl clang's GCC-compatible compiler driver does not return a failure
994 dnl exit status even though it complains about options it does not
995 dnl understand.
c2deac54
YT		 996 dnl
997 dnl Also, check stderr as gcc exits with status 0 for options
998 dnl rejected at getopt level.
999 dnl % touch /tmp/a.c
1000 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1001 dnl gcc: unrecognized option '-Qunused-arguments'
1002 dnl 0
1003 dnl %
4c1e8cb9
BP		 1004 dnl
1005 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1006 dnl it does not understand, unless it has another error to report, so
1007 dnl instead of testing for -Wno-<foo>, test for the positive version.
1008 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1009 AC_COMPILE_IFELSE(
1010 [AC_LANG_SOURCE([int x;])],
1011 [if test -s conftest.err && grep "unrecognized option" conftest.err
1012 then
1013 ovs_cv_name[]=no
1014 else
1015 ovs_cv_name[]=yes
1016 fi],
1017 [ovs_cv_name[]=no])
064af421
BP		 1018 CFLAGS="$ovs_save_CFLAGS"])
1019 if test $ovs_cv_name = yes; then
83f6c050 1020 m4_if([$2], [], [:], [$2])
064af421
BP		 1021 else
1022 m4_if([$3], [], [:], [$3])
1023 fi
1024])
1025
50194820
BP		 1026dnl OVS_CHECK_WERROR
1027dnl
1028dnl Check whether the C compiler accepts -Werror.
1029dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1030AC_DEFUN([OVS_CHECK_WERROR],
1031 [WERROR=
1032 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1033
1034dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1035dnl Check whether the given C compiler OPTION is accepted.
1036dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1037AC_DEFUN([OVS_CHECK_CC_OPTION],
1038 [AC_REQUIRE([OVS_CHECK_WERROR])
1039 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1040
064af421
BP		 1041dnl OVS_ENABLE_OPTION([OPTION])
1042dnl Check whether the given C compiler OPTION is accepted.
d161c099 1043dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1044dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1045AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1046 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1047 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1048
1049dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1050dnl Check whether the given C compiler OPTION is accepted.
1051dnl If so, enable the given Automake CONDITIONAL.
1052
1053dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1054AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1055 [OVS_CHECK_CC_OPTION(
1056 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1057 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1058dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1059
1060dnl Check for too-old XenServer.
1061AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1062 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1063 [if test -e /etc/redhat-release; then
1064 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1065 fi
1066 if test -z "$ovs_cv_xsversion"; then
1067 ovs_cv_xsversion=none
1068 fi])
1069 case $ovs_cv_xsversion in
1070 none)
1071 ;;
1072
1073 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1074 [[6-9]]* | dnl XenServer 6 or later
1075 5.[[7-9]]* | dnl XenServer 5.7 or later
1076 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1077 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1078 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1079 ;;
1080
1081 *)
1082 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1083 ;;
1084 esac])
29d935d6 1085
643c0c34
BP		 1086dnl OVS_CHECK_SPARSE_TARGET
1087dnl
1088dnl The "cgcc" script from "sparse" isn't very good at detecting the
1089dnl target for which the code is being built. This helps it out.
1090AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1091 [AC_CACHE_CHECK(
1092 [target hint for cgcc],
1093 [ac_cv_sparse_target],
1094 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1095 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1096 [x86_64-*], [ac_cv_sparse_target=x86_64],
1097 [ac_cv_sparse_target=other])])
1098 AS_CASE([$ac_cv_sparse_target],
1099 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1100 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1101 [SPARSEFLAGS= CGCCFLAGS=])
1102 AC_SUBST([SPARSEFLAGS])
1103 AC_SUBST([CGCCFLAGS])])
1104
32e96ab7
AZ		 1105dnl OVS_SPARSE_EXTRA_INCLUDES
1106dnl
1107dnl The cgcc script from "sparse" does not search gcc's default
1108dnl search path. Get the default search path from GCC and pass
1109dnl them to sparse.
1110AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1111 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1112 [`$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 ' ' `] ))
1113
29d935d6
BP		 1114dnl OVS_ENABLE_SPARSE
1115AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1116 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1117 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1118 : ${SPARSE=sparse}
1119 AC_SUBST([SPARSE])
1120 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1121 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1122
1123 AC_ARG_ENABLE(
1124 [sparse],
1125 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1126 [], [enable_sparse=no])
1127 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1128
0eaaacac
FL		 1129dnl OVS_CTAGS_IDENTIFIERS
1130dnl
1131dnl ctags ignores symbols with extras identifiers. This builds a list of
1132dnl specially handled identifiers to be ignored.
1133AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1134 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1135 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1136
8a8cd0ac
BP		 1137dnl OVS_PTHREAD_SET_NAME
1138dnl
1139dnl This checks for three known variants of pthreads functions for setting
1140dnl the name of the current thread:
1141dnl
1142dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1143dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1144dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1145dnl
1146dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1147dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1148dnl provide to it.
1149dnl
1150dnl This macro defines:
1151dnl
1152dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1153dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1154dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1155AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1156 [AC_CHECK_FUNCS([pthread_set_name_np])
1157 if test $ac_cv_func_pthread_set_name_np != yes; then
1158 AC_CACHE_CHECK(
1159 [for pthread_setname_np() variant],
1160 [ovs_cv_pthread_setname_np],
1161 [AC_LINK_IFELSE(
a0903134 1162 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1163 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1164 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1165 [AC_LINK_IFELSE(
a0903134 1166 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1167], [pthread_setname_np(pthread_self(), "%s", "name");])],
1168 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1169 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1170 case $ovs_cv_pthread_setname_np in # (
1171 glibc)
a0903134
YT		 1172 AC_DEFINE(
1173 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1174 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1175 ;; # (
8a8cd0ac 1176 netbsd)
a0903134
YT		 1177 AC_DEFINE(
1178 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1179 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1180 ;;
8a8cd0ac
BP		 1181 esac
1182 fi])
5020f5f0
BP		 1183
1184dnl OVS_CHECK_LINUX_HOST.
1185dnl
1186dnl Checks whether we're building for a Linux host, based on the presence of
1187dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1188dnl LINUX based on the result.
1189AC_DEFUN([OVS_CHECK_LINUX_HOST],
1190 [AC_CACHE_CHECK(
1191 [whether __linux__ is defined],
1192 [ovs_cv_linux],
1193 [AC_COMPILE_IFELSE(
1194 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1195 [ovs_cv_linux=true],
1196 [ovs_cv_linux=false])])
1197 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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