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netdev: Eliminate redundant ifindex mapping.
[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$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
35 AC_SUBST([FLAKE8_WERROR])])
a64e37a1 36
e3438006 37dnl OVS_CHECK_LINUX
064af421 38dnl
997d327d 39dnl Configure linux kernel source tree
e3438006 40AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 41 AC_ARG_WITH([linux],
42 [AC_HELP_STRING([--with-linux=/path/to/linux],
43 [Specify the Linux kernel build directory])])
44 AC_ARG_WITH([linux-source],
45 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
46 [Specify the Linux kernel source directory
a0903134
YT		 47 (usually figured out automatically from build
48 directory)])])
8a2d6596
BP		 49
50 # Deprecated equivalents to --with-linux, --with-linux-source.
51 AC_ARG_WITH([l26])
52 AC_ARG_WITH([l26-source])
53
54 if test X"$with_linux" != X; then
55 KBUILD=$with_linux
56 elif test X"$with_l26" != X; then
57 KBUILD=$with_l26
58 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
59 else
60 KBUILD=
61 fi
62
63 if test X"$KBUILD" != X; then
64 if test X"$with_linux_source" != X; then
65 KSRC=$with_linux_source
66 elif test X"$with_l26_source" != X; then
67 KSRC=$with_l26_source
68 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 69 else
70 KSRC=
8a2d6596
BP		 71 fi
72 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
73 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
74 fi
75
e3438006
BP		 76 if test -n "$KBUILD"; then
77 KBUILD=`eval echo "$KBUILD"`
78 case $KBUILD in
0b6d72fc 79 /*) ;;
e3438006 80 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 81 esac
064af421 82
7c9e113b
BP		 83 # The build directory is what the user provided.
84 # Make sure that it exists.
8a2d6596 85 AC_MSG_CHECKING([for Linux build directory])
e3438006 86 if test -d "$KBUILD"; then
a0903134
YT		 87 AC_MSG_RESULT([$KBUILD])
88 AC_SUBST(KBUILD)
064af421 89 else
a0903134
YT		 90 AC_MSG_RESULT([no])
91 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 92 fi
93
7c9e113b 94 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 95 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 96 # Use heuristics to find the source headers.
8a2d6596 97 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 98 if test -n "$KSRC"; then
99 KSRC=`eval echo "$KSRC"`
100 case $KSRC in
f5fb5de6 101 /*) ;;
e3438006 102 *) KSRC=`pwd`/$KSRC ;;
b57f675c 103 esac
e3438006 104 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 105 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 106 fi
107 else
e3438006
BP		 108 KSRC=$KBUILD
109 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 110 # Debian kernel build Makefiles tend to include a line of the form:
111 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
112 # First try to extract the source directory from this line.
113 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
114 if test ! -e "$KSRC"/include/linux/kernel.h; then
115 # Didn't work. Fall back to name-based heuristics that used to work.
116 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
117 */build)
118 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
119 ;; # (
120 *)
121 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
122 ;;
123 esac
124 fi
f5fb5de6 125 fi
fe0731b1 126 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 127 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 128 fi
129 fi
e3438006 130 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 131
132 AC_MSG_CHECKING([for kernel version])
71fe9970 133 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 134 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
135 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 136 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 137 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 138 elif test X"$sublevel" = X; then
139 kversion=$version.$patchlevel
140 else
141 kversion=$version.$patchlevel.$sublevel
7c9e113b 142 fi
71fe9970
BP		 143 AC_MSG_RESULT([$kversion])
144
3afcde43 145 if test "$version" -ge 4; then
1465deac 146 if test "$version" = 4 && test "$patchlevel" -le 13; then
3afcde43 147 : # Linux 4.x
d76aabea 148 else
1465deac 149 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.13.x is not supported (please refer to the FAQ for advice)])
d76aabea 150 fi
8063e095 151 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 152 : # Linux 3.x
71fe9970 153 else
8063e095 154 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 155 fi
2520f452
IY		 156 if (test ! -e "$KBUILD"/include/linux/version.h && \
157 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 158 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
159 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 160 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 161 fi
e3438006 162 OVS_CHECK_LINUX_COMPAT
064af421 163 fi
e3438006 164 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 165])
166
1dc0da67
PB		 167dnl OVS_CHECK_LINUX_TC
168dnl
169dnl Configure Linux tc compat.
170AC_DEFUN([OVS_CHECK_LINUX_TC], [
171 AC_COMPILE_IFELSE([
172 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
2517aa5a 173 int x = TCA_FLOWER_KEY_IP_TTL_MASK;
1dc0da67 174 ])],
2517aa5a
PB		 175 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_IP_TTL_MASK], [1],
176 [Define to 1 if TCA_FLOWER_KEY_IP_TTL_MASK is avaiable.])])
1dc0da67
PB		 177
178 AC_COMPILE_IFELSE([
179 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
180 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
181 ])],
182 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
183 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is avaiable.])])
184
185 AC_COMPILE_IFELSE([
186 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
187 int x = TCA_TUNNEL_KEY_ENC_DST_PORT;
188 ])],
189 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_DST_PORT], [1],
190 [Define to 1 if TCA_TUNNEL_KEY_ENC_DST_PORT is avaiable.])])
191])
192
8a9562d2
PS		 193dnl OVS_CHECK_DPDK
194dnl
195dnl Configure DPDK source tree
196AC_DEFUN([OVS_CHECK_DPDK], [
197 AC_ARG_WITH([dpdk],
198 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 199 [Specify the DPDK build directory])],
200 [have_dpdk=true])
8a9562d2 201
40b5ea86 202 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 203 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 204 AC_MSG_RESULT([no])
205 DPDKLIB_FOUND=false
206 else
207 AC_MSG_RESULT([yes])
208 case "$with_dpdk" in
209 yes)
210 DPDK_AUTO_DISCOVER="true"
96195c09
CE		 211 PKG_CHECK_MODULES([DPDK], [libdpdk],
212 [DPDK_INCLUDE="$DPDK_CFLAGS"],
213 [DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"])
40b5ea86
BB		 214 ;;
215 *)
216 DPDK_AUTO_DISCOVER="false"
96195c09 217 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 218 # If 'with_dpdk' is passed install directory, point to headers
219 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 220 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
221 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
222 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
223 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 224 fi
40b5ea86
BB		 225 DPDK_LIB_DIR="$with_dpdk/lib"
226 ;;
227 esac
8a9562d2 228
18f777b2 229 DPDK_LIB="-ldpdk"
10d01ad2 230 DPDK_EXTRA_LIB=""
8a9562d2 231
95626395
TG		 232 ovs_save_CFLAGS="$CFLAGS"
233 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 234 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 235 if test "$DPDK_AUTO_DISCOVER" = "false"; then
236 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
237 fi
238
435aaddd
CL		 239 AC_COMPILE_IFELSE([
240 AC_LANG_PROGRAM(
241 [
242 #include <rte_config.h>
243#if RTE_LIBRTE_VHOST_NUMA
244#error
245#endif
246 ], [])
247 ], [],
248 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0
CL		 249 DPDK_EXTRA_LIB="-lnuma"
250 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 251
4b88d678
CL		 252 AC_COMPILE_IFELSE([
253 AC_LANG_PROGRAM(
254 [
255 #include <rte_config.h>
256#if RTE_LIBRTE_PMD_PCAP
257#error
258#endif
259 ], [])
260 ], [],
261 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
262 DPDK_EXTRA_LIB="-lpcap"
263 AC_COMPILE_IFELSE([
264 AC_LANG_PROGRAM(
265 [
266 #include <rte_config.h>
267#if RTE_LIBRTE_PDUMP
268#error
269#endif
270 ], [])
271 ], [],
272 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
273 ])
274
c1223b11
DDP		 275 # On some systems we have to add -ldl to link with dpdk
276 #
277 # This code, at first, tries to link without -ldl (""),
278 # then adds it and tries again.
279 # Before each attempt the search cache must be unset,
280 # otherwise autoconf will stick with the old result
281
40b5ea86 282 DPDKLIB_FOUND=false
c1223b11
DDP		 283 save_LIBS=$LIBS
284 for extras in "" "-ldl"; do
435aaddd 285 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 286 AC_LINK_IFELSE(
287 [AC_LANG_PROGRAM([#include <rte_config.h>
288 #include <rte_eal.h>],
289 [int rte_argc; char ** rte_argv;
290 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 291 [DPDKLIB_FOUND=true])
292 if $DPDKLIB_FOUND; then
c1223b11
DDP		 293 break
294 fi
295 done
40b5ea86
BB		 296
297 # If linking unsuccessful
298 if test "$DPDKLIB_FOUND" = "false" ; then
299 if $DPDK_AUTO_DISCOVER; then
300 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])
301 else
302 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
303 fi
c1223b11 304 fi
95626395
TG		 305 CFLAGS="$ovs_save_CFLAGS"
306 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 307 if test "$DPDK_AUTO_DISCOVER" = "false"; then
308 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
309 fi
96195c09 310 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 311 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 312
3c94676c 313 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 314 #
315 # This happens because the rest of the DPDK code doesn't use any symbol in
316 # the pmd driver objects, and the drivers register themselves using an
317 # __attribute__((constructor)) function.
318 #
319 # These options are specified inside a single -Wl directive to prevent
320 # autotools from reordering them.
3c94676c 321 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 322 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 323 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 324 fi
325
40b5ea86 326 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 327])
328
8828e5c7 329dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 330dnl
331dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 332dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
333dnl <REGEX> translated to uppercase.
064af421
BP		 334AC_DEFUN([OVS_GREP_IFELSE], [
335 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 336 if test -f $1; then
337 grep '$2' $1 >/dev/null 2>&1
338 status=$?
339 case $status in
997d327d 340 0)
7507ec48 341 AC_MSG_RESULT([yes])
8828e5c7 342 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 343 ;;
997d327d 344 1)
7507ec48
JG		 345 AC_MSG_RESULT([no])
346 $4
347 ;;
997d327d 348 *)
7507ec48
JG		 349 AC_MSG_ERROR([grep exited with status $status])
350 ;;
351 esac
352 else
353 AC_MSG_RESULT([file not found])
354 $4
355 fi
064af421
BP		 356])
357
13dd4a97
JS		 358dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
359dnl
360dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
361dnl structure definition. If this is successful, runs IF-MATCH, otherwise
362dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
363dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
364dnl translated to uppercase.
365AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
366 AC_MSG_CHECKING([whether $2 has member $3 in $1])
367 if test -f $1; then
83a27884 368 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 369 status=$?
370 case $status in
371 0)
372 AC_MSG_RESULT([yes])
373 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
374 ;;
375 1)
376 AC_MSG_RESULT([no])
377 $5
378 ;;
379 *)
380 AC_MSG_ERROR([grep exited with status $status])
381 ;;
382 esac
383 else
384 AC_MSG_RESULT([file not found])
385 $5
386 fi
387])
388
71ce9edd
JR		 389dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
390dnl
391dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
392dnl the function signature starting from the line matching FUNCTION
393dnl and ending with the line containing the closing parenthesis. If
394dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
395dnl IF-MATCH is empty then it defines to
396dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
397dnl <REGEX> translated to uppercase.
398AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
399 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
400 if test -f $1; then
401 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
402 status=$?
403 case $status in
404 0)
405 AC_MSG_RESULT([yes])
406 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
407 ;;
408 1)
409 AC_MSG_RESULT([no])
410 $5
411 ;;
412 *)
413 AC_MSG_ERROR([grep exited with status $status])
414 ;;
415 esac
416 else
417 AC_MSG_RESULT([file not found])
418 $5
419 fi
420])
421
064af421
BP		 422dnl OVS_DEFINE(NAME)
423dnl
424dnl Defines NAME to 1 in kcompat.h.
425AC_DEFUN([OVS_DEFINE], [
22bcc0e7 426 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 427])
428
e3438006 429dnl OVS_CHECK_LINUX_COMPAT
064af421 430dnl
8063e095 431dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 432dnl the directory in $KBUILD.
433AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 434 rm -f datapath/linux/kcompat.h.new
435 mkdir -p datapath/linux
436 : > datapath/linux/kcompat.h.new
4aa13c0c 437
e23775f2
PS		 438 echo '#include <linux/version.h>
439#ifndef RHEL_RELEASE_CODE
440#define RHEL_RELEASE_CODE 0
441#define RHEL_RELEASE_VERSION(a, b) 0
442#endif' >> datapath/linux/kcompat.h.new
443
e3438006 444 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 445 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
446
e23775f2
PS		 447 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
448 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
449 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
450
e3438006 451 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 452 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 453 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 454
d923a695 455 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 456 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 457
e23775f2
PS		 458 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
459 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
460 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 461 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 462 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 463
e3438006 464 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 465 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 466 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
467 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 468 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
469 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
470
13dd4a97
JS		 471 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
472 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 473 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
474 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 475 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
476 [ip_do_fragment], [net],
477 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 478 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
479 [ip_local_out], [net],
480 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
481
cfda4537 482 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 483
484 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
485 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 486 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 487 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
488 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 489 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
490 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 491 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 492 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 493 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
494 [frags_work])
d1c390e6
JS		 495 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
496 [rwlock])
e0d45da3
JS		 497 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
498 [list_evictor])
38f45380 499 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 500 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
501 [sub_frag_mem_limit], [struct.netns_frags],
502 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
503 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
504 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 505 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
506 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 507
f2252c61
PS		 508 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
509 dnl OVS does not really need ipv6 label field, but its presence signifies that
510 dnl the stack has all required ipv6 support.
511 dnl OVS also does not need dst_cache But this dependency allows us to write
512 dnl much cleaner code.
513
3259c4ff
PS		 514 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
515 [label],
516 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
517 [iptunnel_pull_offloads],
997d327d 518 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
f2252c61 519 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])
4aa13c0c 520
65590144
YHW		 521 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
522 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 523 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
524 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 525 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 526 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
527 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
528 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 529 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95
TG		 530 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
531 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 532 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 533 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
534 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 535 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
536 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
d1890de5 537 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 538 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
539 dnl So check type of tstats.
540 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
541 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 542 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
543 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 544 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 545 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
546 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
547 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
548 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 549 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 550 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
551 [extended])
7efb1e09
PS		 552 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
553 [netdev_master_upper_dev_link], [upper_priv],
554 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 555 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
556 [netdev_master_upper_dev_link_rh],
557 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
558
6c0bf091
JW		 559 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
560 [max_mtu])
e23775f2
PS		 561
562 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
563 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 564 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
565 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 566 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
567 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
568 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
569 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
570
e4e04c3b 571 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 572 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 573
6d9b6937
JR		 574 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
575 [nf_conn], [struct timer_list[[ \t]]*timeout],
576 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
577 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
578 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
579
71ce9edd
JR		 580 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
581 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 582 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 583 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
584 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 585 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 586 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
587 [nf_ct_set])
56ec5593
JS		 588 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
589 [nf_ct_is_untracked])
ac9cd0d2
JS		 590 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
591 [nf_ct_zone_init])
459064e7
JS		 592 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
593 [nf_connlabels_get])
7f2ab8cd
JR		 594 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
595 [nf_connlabels_get], [int bit],
596 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 597 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
598 [nf_conn_labels], [words])
0d330e42
JR		 599 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
600 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
601 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
057772cf 602
e2f3178f 603 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 604 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 605
e23775f2
PS		 606 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
607 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
608 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
609 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
610 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
611
e3438006
BP		 612 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
613 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 614 [rcu_read_lock_held])])
8fa52250 615 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
997d327d 616
6a33828d
BP		 617 # Check for the proto_data_valid member in struct sk_buff. The [^@]
618 # is necessary because some versions of this header remove the
619 # member but retain the kerneldoc comment that describes it (which
620 # starts with @). The brackets must be doubled because of m4
621 # quoting rules.
e3438006 622 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 623 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 624 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 625 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 626 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 627 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 628 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 629 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 630 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
631 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 632 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 633 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 634 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 635 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 636 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
637 [skb_reset_tail_pointer])
e3438006 638 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 639 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 640 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 641 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 642 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 643 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 644 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 645 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 646 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 647 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 648 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
649 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 650 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 651 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
652 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 653 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
654 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 655 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 656 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 657 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 658 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 659 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 660 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 661 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 662 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 663 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 664
e3438006 665 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 666 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 667 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 668 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 669 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
670 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 671
e3438006
BP		 672 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
673 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 674
0d03e51c 675 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 676 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 677
114fce23
SG		 678 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
679 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 680 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 681 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
682 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 683 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 684 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
685 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 686 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
687 [genl_notify], [net],
688 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
689
13dd4a97
JS		 690
691 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
692 [genl_multicast_group], [id])
fdce83a3 693 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 694
cc1d0dea 695 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 696 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 697 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 698 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 699 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 700 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
701 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 702 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
703 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
704
91b37647 705 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 706 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 707 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
708 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
709 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 710 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 711 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 712 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 713 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
714 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 715 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
716 [nla_parse], [netlink_ext_ack],
717 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 718
c4e976db
JG		 719 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
720
e3438006 721 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 722 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 723 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 724 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 725 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 726 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 727 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 728
aadd6ae9
JS		 729 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
730 [metadata_dst_alloc], [metadata_type])
731
09f27436
JG		 732 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
733
3174a818
TG		 734 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
735 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 736 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 737 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
738 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
739 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 740 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 741 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
742 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 743 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
744 [gro_receive])
e23775f2
PS		 745
746 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 747 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
748 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
749 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 750
b7ebebcd
PS		 751 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
752 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 753 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
754 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 755 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
756 [udp_add_offload], [net],
757 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 758 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
759 [nf_defrag_ipv6_enable], [net],
760 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 761 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
762 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 763 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
764 [needs_free_netdev],
765 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 766 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
767 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 768 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 769 [nf_conntrack_helper_put],
770 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 771 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 772 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
e0b0150c
GR		 773 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
774 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 775 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
776 [extack],
777 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 778 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
779 [list],
780 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
21a719d6 781
22bcc0e7
JG		 782 if cmp -s datapath/linux/kcompat.h.new \
783 datapath/linux/kcompat.h >/dev/null 2>&1; then
784 rm datapath/linux/kcompat.h.new
064af421 785 else
22bcc0e7 786 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 787 fi
788])
789
790dnl Checks for net/if_packet.h.
791AC_DEFUN([OVS_CHECK_IF_PACKET],
792 [AC_CHECK_HEADER([net/if_packet.h],
793 [HAVE_IF_PACKET=yes],
794 [HAVE_IF_PACKET=no])
795 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
796 if test "$HAVE_IF_PACKET" = yes; then
797 AC_DEFINE([HAVE_IF_PACKET], [1],
798 [Define to 1 if net/if_packet.h is available.])
799 fi])
800
f6eb6b20 801dnl Checks for net/if_dl.h.
d30e714c 802dnl
d23fa2ed
YT		 803dnl (We use this as a proxy for checking whether we're building on FreeBSD
804dnl or NetBSD.)
9360d9b7
EM		 805AC_DEFUN([OVS_CHECK_IF_DL],
806 [AC_CHECK_HEADER([net/if_dl.h],
807 [HAVE_IF_DL=yes],
808 [HAVE_IF_DL=no])
809 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
810 if test "$HAVE_IF_DL" = yes; then
811 AC_DEFINE([HAVE_IF_DL], [1],
812 [Define to 1 if net/if_dl.h is available.])
d30e714c 813
d23fa2ed 814 # On these platforms we use libpcap to access network devices.
d30e714c 815 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 816 fi])
817
e50097d2
BP		 818dnl Checks for buggy strtok_r.
819dnl
820dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
821dnl with optimization that can cause segfaults:
822dnl
823dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
824AC_DEFUN([OVS_CHECK_STRTOK_R],
825 [AC_CACHE_CHECK(
826 [whether strtok_r macro segfaults on some inputs],
827 [ovs_cv_strtok_r_bug],
828 [AC_RUN_IFELSE(
829 [AC_LANG_PROGRAM([#include <stdio.h>
830 #include <string.h>
831 ],
416e7132
BP		 832 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
833 /* Assume bug is present, because relatively minor
834 changes in compiler settings (e.g. optimization
835 level) can make it crop up. */
836 return 1;
837 #else
838 char string[] = ":::";
e50097d2
BP		 839 char *save_ptr = (char *) 0xc0ffee;
840 char *token1, *token2;
841 token1 = strtok_r(string, ":", &save_ptr);
842 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 843 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 844 printf ("%s %s\n", token1, token2);
845 return 0;
416e7132 846 #endif
e50097d2
BP		 847 ]])],
848 [ovs_cv_strtok_r_bug=no],
849 [ovs_cv_strtok_r_bug=yes],
850 [ovs_cv_strtok_r_bug=yes])])
851 if test $ovs_cv_strtok_r_bug = yes; then
852 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
853 [Define if strtok_r macro segfaults on some inputs])
854 fi
855])
856
064af421
BP		 857dnl ----------------------------------------------------------------------
858dnl These macros are from GNU PSPP, with the following original license:
859dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
860dnl This file is free software; the Free Software Foundation
861dnl gives unlimited permission to copy and/or distribute it,
862dnl with or without modifications, as long as this notice is preserved.
863
50194820 864AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 865 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 866 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
867 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 868 dnl Include -Werror in the compiler options, because without -Werror
869 dnl clang's GCC-compatible compiler driver does not return a failure
870 dnl exit status even though it complains about options it does not
871 dnl understand.
c2deac54
YT		 872 dnl
873 dnl Also, check stderr as gcc exits with status 0 for options
874 dnl rejected at getopt level.
875 dnl % touch /tmp/a.c
876 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
877 dnl gcc: unrecognized option '-Qunused-arguments'
878 dnl 0
879 dnl %
50194820 880 CFLAGS="$CFLAGS $WERROR $1"
37f4615e
BP		 881 AC_COMPILE_IFELSE(
882 [AC_LANG_SOURCE([int x;])],
883 [if test -s conftest.err && grep "unrecognized option" conftest.err
884 then
885 ovs_cv_name[]=no
886 else
887 ovs_cv_name[]=yes
888 fi],
889 [ovs_cv_name[]=no])
064af421
BP		 890 CFLAGS="$ovs_save_CFLAGS"])
891 if test $ovs_cv_name = yes; then
83f6c050 892 m4_if([$2], [], [:], [$2])
064af421
BP		 893 else
894 m4_if([$3], [], [:], [$3])
895 fi
896])
897
50194820
BP		 898dnl OVS_CHECK_WERROR
899dnl
900dnl Check whether the C compiler accepts -Werror.
901dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
902AC_DEFUN([OVS_CHECK_WERROR],
903 [WERROR=
904 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
905
906dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
907dnl Check whether the given C compiler OPTION is accepted.
908dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
909AC_DEFUN([OVS_CHECK_CC_OPTION],
910 [AC_REQUIRE([OVS_CHECK_WERROR])
911 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
912
064af421
BP		 913dnl OVS_ENABLE_OPTION([OPTION])
914dnl Check whether the given C compiler OPTION is accepted.
d161c099 915dnl If so, add it to WARNING_FLAGS.
064af421
BP		 916dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
917AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 918 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
919 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 920
921dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
922dnl Check whether the given C compiler OPTION is accepted.
923dnl If so, enable the given Automake CONDITIONAL.
924
925dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
926AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
927 [OVS_CHECK_CC_OPTION(
928 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
929 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 930dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 931
932dnl Check for too-old XenServer.
933AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
934 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
935 [if test -e /etc/redhat-release; then
936 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
937 fi
938 if test -z "$ovs_cv_xsversion"; then
939 ovs_cv_xsversion=none
940 fi])
941 case $ovs_cv_xsversion in
942 none)
943 ;;
944
945 [[1-9]][[0-9]]* | dnl XenServer 10 or later
946 [[6-9]]* | dnl XenServer 6 or later
947 5.[[7-9]]* | dnl XenServer 5.7 or later
948 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
949 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
950 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
951 ;;
952
953 *)
954 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
955 ;;
956 esac])
29d935d6 957
643c0c34
BP		 958dnl OVS_CHECK_SPARSE_TARGET
959dnl
960dnl The "cgcc" script from "sparse" isn't very good at detecting the
961dnl target for which the code is being built. This helps it out.
962AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
963 [AC_CACHE_CHECK(
964 [target hint for cgcc],
965 [ac_cv_sparse_target],
966 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
967 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
968 [x86_64-*], [ac_cv_sparse_target=x86_64],
969 [ac_cv_sparse_target=other])])
970 AS_CASE([$ac_cv_sparse_target],
971 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
972 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
973 [SPARSEFLAGS= CGCCFLAGS=])
974 AC_SUBST([SPARSEFLAGS])
975 AC_SUBST([CGCCFLAGS])])
976
32e96ab7
AZ		 977dnl OVS_SPARSE_EXTRA_INCLUDES
978dnl
979dnl The cgcc script from "sparse" does not search gcc's default
980dnl search path. Get the default search path from GCC and pass
981dnl them to sparse.
982AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
983 AC_SUBST([SPARSE_EXTRA_INCLUDES],
984 [`$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 ' ' `] ))
985
29d935d6
BP		 986dnl OVS_ENABLE_SPARSE
987AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 988 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 989 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 990 : ${SPARSE=sparse}
991 AC_SUBST([SPARSE])
992 AC_CONFIG_COMMANDS_PRE(
344f6253 993 [CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])])
8a8cd0ac 994
0eaaacac
FL		 995dnl OVS_CTAGS_IDENTIFIERS
996dnl
997dnl ctags ignores symbols with extras identifiers. This builds a list of
998dnl specially handled identifiers to be ignored.
999AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1000 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1001 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1002
8a8cd0ac
BP		 1003dnl OVS_PTHREAD_SET_NAME
1004dnl
1005dnl This checks for three known variants of pthreads functions for setting
1006dnl the name of the current thread:
1007dnl
1008dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1009dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1010dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1011dnl
1012dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1013dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1014dnl provide to it.
1015dnl
1016dnl This macro defines:
1017dnl
1018dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1019dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1020dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1021AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1022 [AC_CHECK_FUNCS([pthread_set_name_np])
1023 if test $ac_cv_func_pthread_set_name_np != yes; then
1024 AC_CACHE_CHECK(
1025 [for pthread_setname_np() variant],
1026 [ovs_cv_pthread_setname_np],
1027 [AC_LINK_IFELSE(
a0903134 1028 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1029 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1030 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1031 [AC_LINK_IFELSE(
a0903134 1032 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1033], [pthread_setname_np(pthread_self(), "%s", "name");])],
1034 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1035 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1036 case $ovs_cv_pthread_setname_np in # (
1037 glibc)
a0903134
YT		 1038 AC_DEFINE(
1039 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1040 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1041 ;; # (
8a8cd0ac 1042 netbsd)
a0903134
YT		 1043 AC_DEFINE(
1044 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1045 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1046 ;;
8a8cd0ac
BP		 1047 esac
1048 fi])
5020f5f0
BP		 1049
1050dnl OVS_CHECK_LINUX_HOST.
1051dnl
1052dnl Checks whether we're building for a Linux host, based on the presence of
1053dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1054dnl LINUX based on the result.
1055AC_DEFUN([OVS_CHECK_LINUX_HOST],
1056 [AC_CACHE_CHECK(
1057 [whether __linux__ is defined],
1058 [ovs_cv_linux],
1059 [AC_COMPILE_IFELSE(
1060 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1061 [ovs_cv_linux=true],
1062 [ovs_cv_linux=false])])
1063 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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