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ofp-ed-props: Fix hang for crafted OpenFlow encap/decap properties.
[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 "$version" -ge 4; then
436d36db 154 if test "$version" = 4 && test "$patchlevel" -le 14; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
436d36db 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.14.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$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
c1223b11
DDP		 290 # On some systems we have to add -ldl to link with dpdk
291 #
292 # This code, at first, tries to link without -ldl (""),
293 # then adds it and tries again.
294 # Before each attempt the search cache must be unset,
295 # otherwise autoconf will stick with the old result
296
40b5ea86 297 DPDKLIB_FOUND=false
c1223b11
DDP		 298 save_LIBS=$LIBS
299 for extras in "" "-ldl"; do
435aaddd 300 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 301 AC_LINK_IFELSE(
302 [AC_LANG_PROGRAM([#include <rte_config.h>
303 #include <rte_eal.h>],
304 [int rte_argc; char ** rte_argv;
305 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 306 [DPDKLIB_FOUND=true])
307 if $DPDKLIB_FOUND; then
c1223b11
DDP		 308 break
309 fi
310 done
40b5ea86
BB		 311
312 # If linking unsuccessful
313 if test "$DPDKLIB_FOUND" = "false" ; then
314 if $DPDK_AUTO_DISCOVER; then
315 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])
316 else
317 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
318 fi
c1223b11 319 fi
95626395
TG		 320 CFLAGS="$ovs_save_CFLAGS"
321 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 322 if test "$DPDK_AUTO_DISCOVER" = "false"; then
323 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
324 fi
96195c09 325 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 326 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 327
3c94676c 328 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 329 #
330 # This happens because the rest of the DPDK code doesn't use any symbol in
331 # the pmd driver objects, and the drivers register themselves using an
332 # __attribute__((constructor)) function.
333 #
334 # These options are specified inside a single -Wl directive to prevent
335 # autotools from reordering them.
3c94676c 336 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 337 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 338 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 339 fi
340
40b5ea86 341 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 342])
343
8828e5c7 344dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 345dnl
346dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 347dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
348dnl <REGEX> translated to uppercase.
064af421
BP		 349AC_DEFUN([OVS_GREP_IFELSE], [
350 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 351 if test -f $1; then
352 grep '$2' $1 >/dev/null 2>&1
353 status=$?
354 case $status in
997d327d 355 0)
7507ec48 356 AC_MSG_RESULT([yes])
8828e5c7 357 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 358 ;;
997d327d 359 1)
7507ec48
JG		 360 AC_MSG_RESULT([no])
361 $4
362 ;;
997d327d 363 *)
7507ec48
JG		 364 AC_MSG_ERROR([grep exited with status $status])
365 ;;
366 esac
367 else
368 AC_MSG_RESULT([file not found])
369 $4
370 fi
064af421
BP		 371])
372
13dd4a97
JS		 373dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
374dnl
375dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
376dnl structure definition. If this is successful, runs IF-MATCH, otherwise
377dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
378dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
379dnl translated to uppercase.
380AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
381 AC_MSG_CHECKING([whether $2 has member $3 in $1])
382 if test -f $1; then
83a27884 383 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 384 status=$?
385 case $status in
386 0)
387 AC_MSG_RESULT([yes])
388 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
389 ;;
390 1)
391 AC_MSG_RESULT([no])
392 $5
393 ;;
394 *)
395 AC_MSG_ERROR([grep exited with status $status])
396 ;;
397 esac
398 else
399 AC_MSG_RESULT([file not found])
400 $5
401 fi
402])
403
71ce9edd
JR		 404dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
405dnl
406dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
407dnl the function signature starting from the line matching FUNCTION
408dnl and ending with the line containing the closing parenthesis. If
409dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
410dnl IF-MATCH is empty then it defines to
411dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
412dnl <REGEX> translated to uppercase.
413AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
414 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
415 if test -f $1; then
416 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
417 status=$?
418 case $status in
419 0)
420 AC_MSG_RESULT([yes])
421 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
422 ;;
423 1)
424 AC_MSG_RESULT([no])
425 $5
426 ;;
427 *)
428 AC_MSG_ERROR([grep exited with status $status])
429 ;;
430 esac
431 else
432 AC_MSG_RESULT([file not found])
433 $5
434 fi
435])
436
064af421
BP		 437dnl OVS_DEFINE(NAME)
438dnl
439dnl Defines NAME to 1 in kcompat.h.
440AC_DEFUN([OVS_DEFINE], [
22bcc0e7 441 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 442])
443
e3438006 444dnl OVS_CHECK_LINUX_COMPAT
064af421 445dnl
8063e095 446dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 447dnl the directory in $KBUILD.
448AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 449 rm -f datapath/linux/kcompat.h.new
450 mkdir -p datapath/linux
451 : > datapath/linux/kcompat.h.new
4aa13c0c 452
e23775f2
PS		 453 echo '#include <linux/version.h>
454#ifndef RHEL_RELEASE_CODE
455#define RHEL_RELEASE_CODE 0
456#define RHEL_RELEASE_VERSION(a, b) 0
457#endif' >> datapath/linux/kcompat.h.new
458
e3438006 459 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 460 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
461
e23775f2
PS		 462 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
463 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
464 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
465
e3438006 466 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 467 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 468 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 469
d923a695 470 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 471 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 472
e23775f2
PS		 473 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
474 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
475 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 476 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 477 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 478
e3438006 479 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 480 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 481 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
482 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 483 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
484 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
485
13dd4a97
JS		 486 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
487 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 488 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
489 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 490 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
491 [ip_do_fragment], [net],
492 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 493 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
494 [ip_local_out], [net],
495 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
496
cfda4537 497 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 498
499 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
500 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 501 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 502 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
503 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 504 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
505 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 506 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 507 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 508 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
509 [frags_work])
d1c390e6
JS		 510 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
511 [rwlock])
e0d45da3
JS		 512 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
513 [list_evictor])
38f45380 514 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 515 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
516 [sub_frag_mem_limit], [struct.netns_frags],
517 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
518 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
519 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 520 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
521 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 522
f2252c61
PS		 523 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
524 dnl OVS does not really need ipv6 label field, but its presence signifies that
525 dnl the stack has all required ipv6 support.
526 dnl OVS also does not need dst_cache But this dependency allows us to write
527 dnl much cleaner code.
528
3259c4ff
PS		 529 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
530 [label],
531 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
532 [iptunnel_pull_offloads],
997d327d 533 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 534 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
535 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 536
138df3e5
GR		 537 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
538 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 539 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
540 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 541 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
542 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 543 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 544 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
545 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
546 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 547 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 548 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 549 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 550 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 551 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 552 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
553 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 554 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
555 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 556 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 557 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 558 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
559 dnl So check type of tstats.
560 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
561 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 562 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
563 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 564 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 565 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
566 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
567 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
568 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 569 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 570 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
571 [extended])
7efb1e09
PS		 572 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
573 [netdev_master_upper_dev_link], [upper_priv],
574 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 575 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
576 [netdev_master_upper_dev_link_rh],
577 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
578
6c0bf091
JW		 579 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
580 [max_mtu])
39ca3383
YHW		 581 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
582 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 583
584 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
585 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 586 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
587 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 588 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
589 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
590 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
591 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
592
e4e04c3b 593 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 594 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 595
6d9b6937
JR		 596 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
597 [nf_conn], [struct timer_list[[ \t]]*timeout],
598 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
599 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
600 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
601
71ce9edd
JR		 602 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
603 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 604 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 605 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
606 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 607 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 608 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
609 [nf_ct_set])
56ec5593
JS		 610 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
611 [nf_ct_is_untracked])
ac9cd0d2
JS		 612 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
613 [nf_ct_zone_init])
459064e7
JS		 614 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
615 [nf_connlabels_get])
7f2ab8cd
JR		 616 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
617 [nf_connlabels_get], [int bit],
618 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 619 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
620 [nf_conn_labels], [words])
0d330e42
JR		 621 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
622 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 623 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 624 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
057772cf 625
e2f3178f 626 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 627 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 628
e23775f2
PS		 629 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
630 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
631 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
632 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
633 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
634
e3438006
BP		 635 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
636 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 637 [rcu_read_lock_held])])
8fa52250 638 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 639 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 640
6a33828d
BP		 641 # Check for the proto_data_valid member in struct sk_buff. The [^@]
642 # is necessary because some versions of this header remove the
643 # member but retain the kerneldoc comment that describes it (which
644 # starts with @). The brackets must be doubled because of m4
645 # quoting rules.
e3438006 646 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 647 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 648 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 649 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 650 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 651 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 652 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 653 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 654 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
655 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 656 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 657 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 658 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 659 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 660 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
661 [skb_reset_tail_pointer])
e3438006 662 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 663 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 664 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 665 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 666 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 667 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 668 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 669 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 670 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 671 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 672 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
673 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 674 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 675 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
676 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 677 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
678 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 679 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 680 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 681 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 682 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 683 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 684 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 685 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 686 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 687 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 688
e3438006 689 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 690 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 691 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 692 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 693 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
694 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 695
e3438006
BP		 696 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
697 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 698
0d03e51c 699 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 700 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 701
114fce23
SG		 702 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
703 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 704 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 705 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
706 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 707 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 708 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
709 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 710 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
711 [genl_notify], [net],
712 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
713
13dd4a97
JS		 714
715 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
716 [genl_multicast_group], [id])
fdce83a3 717 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 718
cc1d0dea 719 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 720 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 721 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 722 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 723 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 724 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
725 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 726 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
727 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
728
91b37647 729 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 730 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 731 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
732 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
733 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 734 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 735 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 736 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 737 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
738 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 739 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
740 [nla_parse], [netlink_ext_ack],
741 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 742
c4e976db
JG		 743 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
744
e3438006 745 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 746 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 747 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 748 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 749 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 750 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 751 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 752
aadd6ae9
JS		 753 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
754 [metadata_dst_alloc], [metadata_type])
755
09f27436
JG		 756 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
757
3174a818
TG		 758 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
759 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 760 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 761 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
762 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
763 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 764 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 765 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
766 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 767 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
768 [gro_receive])
e23775f2
PS		 769
770 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 771 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
772 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
773 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 774
b7ebebcd
PS		 775 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
776 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 777 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
778 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 779 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
780 [udp_add_offload], [net],
781 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 782 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
783 [nf_defrag_ipv6_enable], [net],
784 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 785 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
786 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 787 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
788 [needs_free_netdev],
789 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 790 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
791 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 792 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 793 [nf_conntrack_helper_put],
794 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 795 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 796 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
e0b0150c
GR		 797 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
798 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 799 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
800 [extack],
801 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 802 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
803 [list],
804 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 805 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
806 [IP_CT_UNTRACKED])
36d3520b
GR		 807 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
808 [netdev_master_upper_dev_link], [extack],
809 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 810 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
811 [__LINUX_COMPILER_TYPES_H],
812 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 813 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
814 [ktime_get_ts64],
815 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 816 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
817 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
818 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 819 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
820 [ktime_get_ns],
821 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 822 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
823 frag_percpu_counter_batch[],
824 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 825 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
826 [null_compute_pseudo],
827 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
828 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
829 [__skb_checksum_convert],
830 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
831 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
832 [max_mtu],
833 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 834 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
835 [erspan_ver],
836 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
837 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
838 [SKB_GSO_IPXIP6],
839 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
840 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
841 [ip6_make_flowlabel], [fl6],
842 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
843 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
844 [auto_flowlabels],
845 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
846 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
847 [netif_keep_dst],
848 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
849 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
850 [ndo_get_iflink],
851 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
853 [skb_set_inner_ipproto],
854 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
855 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
856 [tunnel_encap_types],
857 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
858 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
859 [IFLA_IPTUN_ENCAP_TYPE],
860 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
861 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
862 [IFLA_IPTUN_COLLECT_METADATA],
863 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 864 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
865 [IFLA_GRE_ENCAP_DPORT])
866 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
867 [IFLA_GRE_COLLECT_METADATA])
868 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
869 [IFLA_GRE_IGNORE_DF])
870 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
871 [IFLA_GRE_FWMARK])
872 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
873 [IFLA_GRE_ERSPAN_INDEX])
874 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
875 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 876 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
877 [IFLA_IPTUN_FWMARK])
10f24236
GR		 878 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
879 [csum_valid],
880 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
881 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
882 [skb_checksum_simple_validate])
44a629b5
GR		 883 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
884 [void.*ndo_get_stats64],
885 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
21a719d6 886
22bcc0e7
JG		 887 if cmp -s datapath/linux/kcompat.h.new \
888 datapath/linux/kcompat.h >/dev/null 2>&1; then
889 rm datapath/linux/kcompat.h.new
064af421 890 else
22bcc0e7 891 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 892 fi
893])
894
895dnl Checks for net/if_packet.h.
896AC_DEFUN([OVS_CHECK_IF_PACKET],
897 [AC_CHECK_HEADER([net/if_packet.h],
898 [HAVE_IF_PACKET=yes],
899 [HAVE_IF_PACKET=no])
900 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
901 if test "$HAVE_IF_PACKET" = yes; then
902 AC_DEFINE([HAVE_IF_PACKET], [1],
903 [Define to 1 if net/if_packet.h is available.])
904 fi])
905
f6eb6b20 906dnl Checks for net/if_dl.h.
d30e714c 907dnl
d23fa2ed
YT		 908dnl (We use this as a proxy for checking whether we're building on FreeBSD
909dnl or NetBSD.)
9360d9b7
EM		 910AC_DEFUN([OVS_CHECK_IF_DL],
911 [AC_CHECK_HEADER([net/if_dl.h],
912 [HAVE_IF_DL=yes],
913 [HAVE_IF_DL=no])
914 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
915 if test "$HAVE_IF_DL" = yes; then
916 AC_DEFINE([HAVE_IF_DL], [1],
917 [Define to 1 if net/if_dl.h is available.])
d30e714c 918
d23fa2ed 919 # On these platforms we use libpcap to access network devices.
d30e714c 920 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 921 fi])
922
e50097d2
BP		 923dnl Checks for buggy strtok_r.
924dnl
925dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
926dnl with optimization that can cause segfaults:
927dnl
928dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
929AC_DEFUN([OVS_CHECK_STRTOK_R],
930 [AC_CACHE_CHECK(
931 [whether strtok_r macro segfaults on some inputs],
932 [ovs_cv_strtok_r_bug],
933 [AC_RUN_IFELSE(
934 [AC_LANG_PROGRAM([#include <stdio.h>
935 #include <string.h>
936 ],
416e7132
BP		 937 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
938 /* Assume bug is present, because relatively minor
939 changes in compiler settings (e.g. optimization
940 level) can make it crop up. */
941 return 1;
942 #else
943 char string[] = ":::";
e50097d2
BP		 944 char *save_ptr = (char *) 0xc0ffee;
945 char *token1, *token2;
946 token1 = strtok_r(string, ":", &save_ptr);
947 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 948 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 949 printf ("%s %s\n", token1, token2);
950 return 0;
416e7132 951 #endif
e50097d2
BP		 952 ]])],
953 [ovs_cv_strtok_r_bug=no],
954 [ovs_cv_strtok_r_bug=yes],
955 [ovs_cv_strtok_r_bug=yes])])
956 if test $ovs_cv_strtok_r_bug = yes; then
957 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
958 [Define if strtok_r macro segfaults on some inputs])
959 fi
960])
961
064af421
BP		 962dnl ----------------------------------------------------------------------
963dnl These macros are from GNU PSPP, with the following original license:
964dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
965dnl This file is free software; the Free Software Foundation
966dnl gives unlimited permission to copy and/or distribute it,
967dnl with or without modifications, as long as this notice is preserved.
968
50194820 969AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 970 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 971 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
972 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 973 dnl Include -Werror in the compiler options, because without -Werror
974 dnl clang's GCC-compatible compiler driver does not return a failure
975 dnl exit status even though it complains about options it does not
976 dnl understand.
c2deac54
YT		 977 dnl
978 dnl Also, check stderr as gcc exits with status 0 for options
979 dnl rejected at getopt level.
980 dnl % touch /tmp/a.c
981 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
982 dnl gcc: unrecognized option '-Qunused-arguments'
983 dnl 0
984 dnl %
50194820 985 CFLAGS="$CFLAGS $WERROR $1"
37f4615e
BP		 986 AC_COMPILE_IFELSE(
987 [AC_LANG_SOURCE([int x;])],
988 [if test -s conftest.err && grep "unrecognized option" conftest.err
989 then
990 ovs_cv_name[]=no
991 else
992 ovs_cv_name[]=yes
993 fi],
994 [ovs_cv_name[]=no])
064af421
BP		 995 CFLAGS="$ovs_save_CFLAGS"])
996 if test $ovs_cv_name = yes; then
83f6c050 997 m4_if([$2], [], [:], [$2])
064af421
BP		 998 else
999 m4_if([$3], [], [:], [$3])
1000 fi
1001])
1002
50194820
BP		 1003dnl OVS_CHECK_WERROR
1004dnl
1005dnl Check whether the C compiler accepts -Werror.
1006dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1007AC_DEFUN([OVS_CHECK_WERROR],
1008 [WERROR=
1009 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1010
1011dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1012dnl Check whether the given C compiler OPTION is accepted.
1013dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1014AC_DEFUN([OVS_CHECK_CC_OPTION],
1015 [AC_REQUIRE([OVS_CHECK_WERROR])
1016 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1017
064af421
BP		 1018dnl OVS_ENABLE_OPTION([OPTION])
1019dnl Check whether the given C compiler OPTION is accepted.
d161c099 1020dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1021dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1022AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1023 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1024 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1025
1026dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1027dnl Check whether the given C compiler OPTION is accepted.
1028dnl If so, enable the given Automake CONDITIONAL.
1029
1030dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1031AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1032 [OVS_CHECK_CC_OPTION(
1033 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1034 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1035dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1036
1037dnl Check for too-old XenServer.
1038AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1039 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1040 [if test -e /etc/redhat-release; then
1041 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1042 fi
1043 if test -z "$ovs_cv_xsversion"; then
1044 ovs_cv_xsversion=none
1045 fi])
1046 case $ovs_cv_xsversion in
1047 none)
1048 ;;
1049
1050 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1051 [[6-9]]* | dnl XenServer 6 or later
1052 5.[[7-9]]* | dnl XenServer 5.7 or later
1053 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1054 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1055 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1056 ;;
1057
1058 *)
1059 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1060 ;;
1061 esac])
29d935d6 1062
643c0c34
BP		 1063dnl OVS_CHECK_SPARSE_TARGET
1064dnl
1065dnl The "cgcc" script from "sparse" isn't very good at detecting the
1066dnl target for which the code is being built. This helps it out.
1067AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1068 [AC_CACHE_CHECK(
1069 [target hint for cgcc],
1070 [ac_cv_sparse_target],
1071 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1072 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1073 [x86_64-*], [ac_cv_sparse_target=x86_64],
1074 [ac_cv_sparse_target=other])])
1075 AS_CASE([$ac_cv_sparse_target],
1076 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1077 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1078 [SPARSEFLAGS= CGCCFLAGS=])
1079 AC_SUBST([SPARSEFLAGS])
1080 AC_SUBST([CGCCFLAGS])])
1081
32e96ab7
AZ		 1082dnl OVS_SPARSE_EXTRA_INCLUDES
1083dnl
1084dnl The cgcc script from "sparse" does not search gcc's default
1085dnl search path. Get the default search path from GCC and pass
1086dnl them to sparse.
1087AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1088 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1089 [`$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 ' ' `] ))
1090
29d935d6
BP		 1091dnl OVS_ENABLE_SPARSE
1092AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1093 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1094 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1095 : ${SPARSE=sparse}
1096 AC_SUBST([SPARSE])
1097 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1098 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1099
1100 AC_ARG_ENABLE(
1101 [sparse],
1102 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1103 [], [enable_sparse=no])
1104 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1105
0eaaacac
FL		 1106dnl OVS_CTAGS_IDENTIFIERS
1107dnl
1108dnl ctags ignores symbols with extras identifiers. This builds a list of
1109dnl specially handled identifiers to be ignored.
1110AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1111 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1112 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1113
8a8cd0ac
BP		 1114dnl OVS_PTHREAD_SET_NAME
1115dnl
1116dnl This checks for three known variants of pthreads functions for setting
1117dnl the name of the current thread:
1118dnl
1119dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1120dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1121dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1122dnl
1123dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1124dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1125dnl provide to it.
1126dnl
1127dnl This macro defines:
1128dnl
1129dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1130dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1131dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1132AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1133 [AC_CHECK_FUNCS([pthread_set_name_np])
1134 if test $ac_cv_func_pthread_set_name_np != yes; then
1135 AC_CACHE_CHECK(
1136 [for pthread_setname_np() variant],
1137 [ovs_cv_pthread_setname_np],
1138 [AC_LINK_IFELSE(
a0903134 1139 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1140 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1141 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1142 [AC_LINK_IFELSE(
a0903134 1143 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1144], [pthread_setname_np(pthread_self(), "%s", "name");])],
1145 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1146 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1147 case $ovs_cv_pthread_setname_np in # (
1148 glibc)
a0903134
YT		 1149 AC_DEFINE(
1150 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1151 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1152 ;; # (
8a8cd0ac 1153 netbsd)
a0903134
YT		 1154 AC_DEFINE(
1155 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1156 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1157 ;;
8a8cd0ac
BP		 1158 esac
1159 fi])
5020f5f0
BP		 1160
1161dnl OVS_CHECK_LINUX_HOST.
1162dnl
1163dnl Checks whether we're building for a Linux host, based on the presence of
1164dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1165dnl LINUX based on the result.
1166AC_DEFUN([OVS_CHECK_LINUX_HOST],
1167 [AC_CACHE_CHECK(
1168 [whether __linux__ is defined],
1169 [ovs_cv_linux],
1170 [AC_COMPILE_IFELSE(
1171 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1172 [ovs_cv_linux=true],
1173 [ovs_cv_linux=false])])
1174 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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