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datapath: get rid of redundant vxlan_dev.flags
[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 "$version" -ge 4; then
2c0e107e 146 if test "$version" = 4 && test "$patchlevel" -le 11; then
3afcde43 147 : # Linux 4.x
d76aabea 148 else
2c0e107e 149 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.11.x is not supported (please refer to the FAQ for advice)])
d76aabea 150 fi
8063e095 151 elif test "$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>], [
173 int x = TCA_ACT_COOKIE;
174 ])],
175 [AC_DEFINE([HAVE_TCA_ACT_COOKIE], [1],
176 [Define to 1 if TCA_ACT_COOKIE is avaiable.])])
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 "$with_dpdk" in
209 yes)
210 DPDK_AUTO_DISCOVER="true"
211 DPDK_INCLUDE="/usr/local/include/dpdk -I/usr/include/dpdk"
212 ;;
213 *)
214 DPDK_AUTO_DISCOVER="false"
215 DPDK_INCLUDE="$with_dpdk/include"
216 # If 'with_dpdk' is passed install directory, point to headers
217 # installed in $DESTDIR/$prefix/include/dpdk
214ac6d4
BP		 218 if test ! -e "$DPDK_INCLUDE/rte_config.h" && \
219 test -e "$DPDK_INCLUDE/dpdk/rte_config.h"; then
220 DPDK_INCLUDE=$DPDK_INCLUDE/dpdk
221 fi
40b5ea86
BB		 222 DPDK_LIB_DIR="$with_dpdk/lib"
223 ;;
224 esac
8a9562d2 225
18f777b2 226 DPDK_LIB="-ldpdk"
10d01ad2 227 DPDK_EXTRA_LIB=""
8a9562d2 228
95626395
TG		 229 ovs_save_CFLAGS="$CFLAGS"
230 ovs_save_LDFLAGS="$LDFLAGS"
c1223b11 231 CFLAGS="$CFLAGS -I$DPDK_INCLUDE"
40b5ea86
BB		 232 if test "$DPDK_AUTO_DISCOVER" = "false"; then
233 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
234 fi
235
435aaddd
CL		 236 AC_COMPILE_IFELSE([
237 AC_LANG_PROGRAM(
238 [
239 #include <rte_config.h>
240#if RTE_LIBRTE_VHOST_NUMA
241#error
242#endif
243 ], [])
244 ], [],
245 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0
CL		 246 DPDK_EXTRA_LIB="-lnuma"
247 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 248
4b88d678
CL		 249 AC_COMPILE_IFELSE([
250 AC_LANG_PROGRAM(
251 [
252 #include <rte_config.h>
253#if RTE_LIBRTE_PMD_PCAP
254#error
255#endif
256 ], [])
257 ], [],
258 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
259 DPDK_EXTRA_LIB="-lpcap"
260 AC_COMPILE_IFELSE([
261 AC_LANG_PROGRAM(
262 [
263 #include <rte_config.h>
264#if RTE_LIBRTE_PDUMP
265#error
266#endif
267 ], [])
268 ], [],
269 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
270 ])
271
c1223b11
DDP		 272 # On some systems we have to add -ldl to link with dpdk
273 #
274 # This code, at first, tries to link without -ldl (""),
275 # then adds it and tries again.
276 # Before each attempt the search cache must be unset,
277 # otherwise autoconf will stick with the old result
278
40b5ea86 279 DPDKLIB_FOUND=false
c1223b11
DDP		 280 save_LIBS=$LIBS
281 for extras in "" "-ldl"; do
435aaddd 282 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 283 AC_LINK_IFELSE(
284 [AC_LANG_PROGRAM([#include <rte_config.h>
285 #include <rte_eal.h>],
286 [int rte_argc; char ** rte_argv;
287 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 288 [DPDKLIB_FOUND=true])
289 if $DPDKLIB_FOUND; then
c1223b11
DDP		 290 break
291 fi
292 done
40b5ea86
BB		 293
294 # If linking unsuccessful
295 if test "$DPDKLIB_FOUND" = "false" ; then
296 if $DPDK_AUTO_DISCOVER; then
297 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])
298 else
299 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
300 fi
c1223b11 301 fi
95626395
TG		 302 CFLAGS="$ovs_save_CFLAGS"
303 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 304 if test "$DPDK_AUTO_DISCOVER" = "false"; then
305 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
306 fi
ab2a3154
IM		 307 OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE"
308 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 309
3c94676c 310 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 311 #
312 # This happens because the rest of the DPDK code doesn't use any symbol in
313 # the pmd driver objects, and the drivers register themselves using an
314 # __attribute__((constructor)) function.
315 #
316 # These options are specified inside a single -Wl directive to prevent
317 # autotools from reordering them.
3c94676c 318 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 319 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 320 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 321 fi
322
40b5ea86 323 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 324])
325
8828e5c7 326dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 327dnl
328dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 329dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
330dnl <REGEX> translated to uppercase.
064af421
BP		 331AC_DEFUN([OVS_GREP_IFELSE], [
332 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 333 if test -f $1; then
334 grep '$2' $1 >/dev/null 2>&1
335 status=$?
336 case $status in
997d327d 337 0)
7507ec48 338 AC_MSG_RESULT([yes])
8828e5c7 339 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 340 ;;
997d327d 341 1)
7507ec48
JG		 342 AC_MSG_RESULT([no])
343 $4
344 ;;
997d327d 345 *)
7507ec48
JG		 346 AC_MSG_ERROR([grep exited with status $status])
347 ;;
348 esac
349 else
350 AC_MSG_RESULT([file not found])
351 $4
352 fi
064af421
BP		 353])
354
13dd4a97
JS		 355dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
356dnl
357dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
358dnl structure definition. If this is successful, runs IF-MATCH, otherwise
359dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
360dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
361dnl translated to uppercase.
362AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
363 AC_MSG_CHECKING([whether $2 has member $3 in $1])
364 if test -f $1; then
83a27884 365 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 366 status=$?
367 case $status in
368 0)
369 AC_MSG_RESULT([yes])
370 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
371 ;;
372 1)
373 AC_MSG_RESULT([no])
374 $5
375 ;;
376 *)
377 AC_MSG_ERROR([grep exited with status $status])
378 ;;
379 esac
380 else
381 AC_MSG_RESULT([file not found])
382 $5
383 fi
384])
385
71ce9edd
JR		 386dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
387dnl
388dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
389dnl the function signature starting from the line matching FUNCTION
390dnl and ending with the line containing the closing parenthesis. If
391dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
392dnl IF-MATCH is empty then it defines to
393dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
394dnl <REGEX> translated to uppercase.
395AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
396 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
397 if test -f $1; then
398 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
399 status=$?
400 case $status in
401 0)
402 AC_MSG_RESULT([yes])
403 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
404 ;;
405 1)
406 AC_MSG_RESULT([no])
407 $5
408 ;;
409 *)
410 AC_MSG_ERROR([grep exited with status $status])
411 ;;
412 esac
413 else
414 AC_MSG_RESULT([file not found])
415 $5
416 fi
417])
418
064af421
BP		 419dnl OVS_DEFINE(NAME)
420dnl
421dnl Defines NAME to 1 in kcompat.h.
422AC_DEFUN([OVS_DEFINE], [
22bcc0e7 423 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 424])
425
e3438006 426dnl OVS_CHECK_LINUX_COMPAT
064af421 427dnl
8063e095 428dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 429dnl the directory in $KBUILD.
430AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 431 rm -f datapath/linux/kcompat.h.new
432 mkdir -p datapath/linux
433 : > datapath/linux/kcompat.h.new
4aa13c0c 434
e23775f2
PS		 435 echo '#include <linux/version.h>
436#ifndef RHEL_RELEASE_CODE
437#define RHEL_RELEASE_CODE 0
438#define RHEL_RELEASE_VERSION(a, b) 0
439#endif' >> datapath/linux/kcompat.h.new
440
e3438006 441 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 442 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
443
e23775f2
PS		 444 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
445 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
446 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
447
e3438006 448 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 449 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 450 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 451
d923a695 452 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 453 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 454
e23775f2
PS		 455 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
456 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
457 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 458 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 459 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 460
e3438006 461 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 462 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 463 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
464 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 465 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
466 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
467
13dd4a97
JS		 468 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
469 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 470 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
471 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 472 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
473 [ip_do_fragment], [net],
474 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 475 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
476 [ip_local_out], [net],
477 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
478
cfda4537 479 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 480
481 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
482 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 483 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 484 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
485 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 486 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
487 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 488 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 489 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 490 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
491 [frags_work])
d1c390e6
JS		 492 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
493 [rwlock])
e0d45da3
JS		 494 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
495 [list_evictor])
38f45380 496 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 497 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
498 [sub_frag_mem_limit], [struct.netns_frags],
499 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
500 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
501 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 502 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
503 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 504
f2252c61
PS		 505 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
506 dnl OVS does not really need ipv6 label field, but its presence signifies that
507 dnl the stack has all required ipv6 support.
508 dnl OVS also does not need dst_cache But this dependency allows us to write
509 dnl much cleaner code.
510
3259c4ff
PS		 511 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
512 [label],
513 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
514 [iptunnel_pull_offloads],
997d327d 515 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
f2252c61 516 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])
4aa13c0c 517
65590144
YHW		 518 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
519 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 520 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
521 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 522 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 523 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
524 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
525 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 526 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95
TG		 527 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
528 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 529 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 530 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
531 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 532 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
533 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
d1890de5 534 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 535 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
536 dnl So check type of tstats.
537 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
538 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 539 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
540 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 541 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 542 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
543 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
544 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
545 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 546 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 547 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
548 [extended])
7efb1e09
PS		 549 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
550 [netdev_master_upper_dev_link], [upper_priv],
551 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
6c0bf091
JW		 552 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
553 [max_mtu])
e23775f2
PS		 554
555 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
556 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 557 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
558 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 559 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
560 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
561 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
562 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
563
e4e04c3b 564 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 565 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 566
6d9b6937
JR		 567 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
568 [nf_conn], [struct timer_list[[ \t]]*timeout],
569 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
570 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
571 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
572
71ce9edd
JR		 573 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
574 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 575 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 576 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
577 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 578 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 579 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
580 [nf_ct_set])
56ec5593
JS		 581 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
582 [nf_ct_is_untracked])
ac9cd0d2
JS		 583 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
584 [nf_ct_zone_init])
459064e7
JS		 585 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
586 [nf_connlabels_get])
7f2ab8cd
JR		 587 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
588 [nf_connlabels_get], [int bit],
589 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 590 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
591 [nf_conn_labels], [words])
0d330e42
JR		 592 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
593 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
594 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
057772cf 595
e2f3178f 596 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 597 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 598
e23775f2
PS		 599 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
600 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
601 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
602 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
603 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
604
e3438006
BP		 605 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
606 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 607 [rcu_read_lock_held])])
8fa52250 608 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
997d327d 609
6a33828d
BP		 610 # Check for the proto_data_valid member in struct sk_buff. The [^@]
611 # is necessary because some versions of this header remove the
612 # member but retain the kerneldoc comment that describes it (which
613 # starts with @). The brackets must be doubled because of m4
614 # quoting rules.
e3438006 615 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 616 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 617 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 618 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 619 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 620 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 621 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 622 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 623 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
624 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 625 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 626 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 627 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 628 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 629 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
630 [skb_reset_tail_pointer])
e3438006 631 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 632 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 633 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 634 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 635 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 636 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 637 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 638 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 639 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 640 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 641 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
642 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 643 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 644 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
645 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 646 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
647 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 648 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 649 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 650 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 651 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 652 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 653 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 654 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 655 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 656 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 657
e3438006 658 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 659 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 660 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 661 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 662 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
663 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 664
e3438006
BP		 665 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
666 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 667
0d03e51c 668 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 669 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 670
114fce23
SG		 671 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
672 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 673 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 674 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
675 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 676 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 677 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
678 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 679 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
680 [genl_notify], [net],
681 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
682
13dd4a97
JS		 683
684 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
685 [genl_multicast_group], [id])
fdce83a3 686 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 687
cc1d0dea 688 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 689 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 690 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 691 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 692 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 693 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
694 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 695 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
696 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
697
91b37647 698 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 699 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 700 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
701 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
702 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 703 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 704 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 705 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 706 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
707 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 708 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
709 [nla_parse], [netlink_ext_ack],
710 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 711
c4e976db
JG		 712 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
713
e3438006 714 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 715 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 716 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 717 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 718 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 719 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 720 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 721
09f27436
JG		 722 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
723
3174a818
TG		 724 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
725 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 726 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 727 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
728 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
729 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 730 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 731 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
732 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 733 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
734 [gro_receive])
e23775f2
PS		 735
736 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 737 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
738 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
739 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 740
b7ebebcd
PS		 741 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
742 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 743 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
744 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 745 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
746 [udp_add_offload], [net],
747 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 748 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
749 [nf_defrag_ipv6_enable], [net],
750 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 751 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
752 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 753 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
754 [needs_free_netdev],
755 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 756 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
757 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d
GR		 758 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
759 [nf_conntrack_helper_put])
21a719d6 760
22bcc0e7
JG		 761 if cmp -s datapath/linux/kcompat.h.new \
762 datapath/linux/kcompat.h >/dev/null 2>&1; then
763 rm datapath/linux/kcompat.h.new
064af421 764 else
22bcc0e7 765 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 766 fi
767])
768
769dnl Checks for net/if_packet.h.
770AC_DEFUN([OVS_CHECK_IF_PACKET],
771 [AC_CHECK_HEADER([net/if_packet.h],
772 [HAVE_IF_PACKET=yes],
773 [HAVE_IF_PACKET=no])
774 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
775 if test "$HAVE_IF_PACKET" = yes; then
776 AC_DEFINE([HAVE_IF_PACKET], [1],
777 [Define to 1 if net/if_packet.h is available.])
778 fi])
779
f6eb6b20 780dnl Checks for net/if_dl.h.
d30e714c 781dnl
d23fa2ed
YT		 782dnl (We use this as a proxy for checking whether we're building on FreeBSD
783dnl or NetBSD.)
9360d9b7
EM		 784AC_DEFUN([OVS_CHECK_IF_DL],
785 [AC_CHECK_HEADER([net/if_dl.h],
786 [HAVE_IF_DL=yes],
787 [HAVE_IF_DL=no])
788 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
789 if test "$HAVE_IF_DL" = yes; then
790 AC_DEFINE([HAVE_IF_DL], [1],
791 [Define to 1 if net/if_dl.h is available.])
d30e714c 792
d23fa2ed 793 # On these platforms we use libpcap to access network devices.
d30e714c 794 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 795 fi])
796
e50097d2
BP		 797dnl Checks for buggy strtok_r.
798dnl
799dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
800dnl with optimization that can cause segfaults:
801dnl
802dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
803AC_DEFUN([OVS_CHECK_STRTOK_R],
804 [AC_CACHE_CHECK(
805 [whether strtok_r macro segfaults on some inputs],
806 [ovs_cv_strtok_r_bug],
807 [AC_RUN_IFELSE(
808 [AC_LANG_PROGRAM([#include <stdio.h>
809 #include <string.h>
810 ],
416e7132
BP		 811 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
812 /* Assume bug is present, because relatively minor
813 changes in compiler settings (e.g. optimization
814 level) can make it crop up. */
815 return 1;
816 #else
817 char string[] = ":::";
e50097d2
BP		 818 char *save_ptr = (char *) 0xc0ffee;
819 char *token1, *token2;
820 token1 = strtok_r(string, ":", &save_ptr);
821 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 822 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 823 printf ("%s %s\n", token1, token2);
824 return 0;
416e7132 825 #endif
e50097d2
BP		 826 ]])],
827 [ovs_cv_strtok_r_bug=no],
828 [ovs_cv_strtok_r_bug=yes],
829 [ovs_cv_strtok_r_bug=yes])])
830 if test $ovs_cv_strtok_r_bug = yes; then
831 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
832 [Define if strtok_r macro segfaults on some inputs])
833 fi
834])
835
064af421
BP		 836dnl ----------------------------------------------------------------------
837dnl These macros are from GNU PSPP, with the following original license:
838dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
839dnl This file is free software; the Free Software Foundation
840dnl gives unlimited permission to copy and/or distribute it,
841dnl with or without modifications, as long as this notice is preserved.
842
50194820 843AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 844 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 845 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
846 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 847 dnl Include -Werror in the compiler options, because without -Werror
848 dnl clang's GCC-compatible compiler driver does not return a failure
849 dnl exit status even though it complains about options it does not
850 dnl understand.
c2deac54
YT		 851 dnl
852 dnl Also, check stderr as gcc exits with status 0 for options
853 dnl rejected at getopt level.
854 dnl % touch /tmp/a.c
855 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
856 dnl gcc: unrecognized option '-Qunused-arguments'
857 dnl 0
858 dnl %
50194820 859 CFLAGS="$CFLAGS $WERROR $1"
37f4615e
BP		 860 AC_COMPILE_IFELSE(
861 [AC_LANG_SOURCE([int x;])],
862 [if test -s conftest.err && grep "unrecognized option" conftest.err
863 then
864 ovs_cv_name[]=no
865 else
866 ovs_cv_name[]=yes
867 fi],
868 [ovs_cv_name[]=no])
064af421
BP		 869 CFLAGS="$ovs_save_CFLAGS"])
870 if test $ovs_cv_name = yes; then
83f6c050 871 m4_if([$2], [], [:], [$2])
064af421
BP		 872 else
873 m4_if([$3], [], [:], [$3])
874 fi
875])
876
50194820
BP		 877dnl OVS_CHECK_WERROR
878dnl
879dnl Check whether the C compiler accepts -Werror.
880dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
881AC_DEFUN([OVS_CHECK_WERROR],
882 [WERROR=
883 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
884
885dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
886dnl Check whether the given C compiler OPTION is accepted.
887dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
888AC_DEFUN([OVS_CHECK_CC_OPTION],
889 [AC_REQUIRE([OVS_CHECK_WERROR])
890 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
891
064af421
BP		 892dnl OVS_ENABLE_OPTION([OPTION])
893dnl Check whether the given C compiler OPTION is accepted.
d161c099 894dnl If so, add it to WARNING_FLAGS.
064af421
BP		 895dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
896AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 897 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
898 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 899
900dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
901dnl Check whether the given C compiler OPTION is accepted.
902dnl If so, enable the given Automake CONDITIONAL.
903
904dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
905AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
906 [OVS_CHECK_CC_OPTION(
907 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
908 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 909dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 910
911dnl Check for too-old XenServer.
912AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
913 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
914 [if test -e /etc/redhat-release; then
915 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
916 fi
917 if test -z "$ovs_cv_xsversion"; then
918 ovs_cv_xsversion=none
919 fi])
920 case $ovs_cv_xsversion in
921 none)
922 ;;
923
924 [[1-9]][[0-9]]* | dnl XenServer 10 or later
925 [[6-9]]* | dnl XenServer 6 or later
926 5.[[7-9]]* | dnl XenServer 5.7 or later
927 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
928 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
929 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
930 ;;
931
932 *)
933 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
934 ;;
935 esac])
29d935d6 936
643c0c34
BP		 937dnl OVS_CHECK_SPARSE_TARGET
938dnl
939dnl The "cgcc" script from "sparse" isn't very good at detecting the
940dnl target for which the code is being built. This helps it out.
941AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
942 [AC_CACHE_CHECK(
943 [target hint for cgcc],
944 [ac_cv_sparse_target],
945 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
946 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
947 [x86_64-*], [ac_cv_sparse_target=x86_64],
948 [ac_cv_sparse_target=other])])
949 AS_CASE([$ac_cv_sparse_target],
950 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
951 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
952 [SPARSEFLAGS= CGCCFLAGS=])
953 AC_SUBST([SPARSEFLAGS])
954 AC_SUBST([CGCCFLAGS])])
955
32e96ab7
AZ		 956dnl OVS_SPARSE_EXTRA_INCLUDES
957dnl
958dnl The cgcc script from "sparse" does not search gcc's default
959dnl search path. Get the default search path from GCC and pass
960dnl them to sparse.
961AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
962 AC_SUBST([SPARSE_EXTRA_INCLUDES],
963 [`$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 ' ' `] ))
964
29d935d6
BP		 965dnl OVS_ENABLE_SPARSE
966AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 967 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 968 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 969 : ${SPARSE=sparse}
970 AC_SUBST([SPARSE])
971 AC_CONFIG_COMMANDS_PRE(
344f6253 972 [CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])])
8a8cd0ac 973
0eaaacac
FL		 974dnl OVS_CTAGS_IDENTIFIERS
975dnl
976dnl ctags ignores symbols with extras identifiers. This builds a list of
977dnl specially handled identifiers to be ignored.
978AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
979 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 980 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 981
8a8cd0ac
BP		 982dnl OVS_PTHREAD_SET_NAME
983dnl
984dnl This checks for three known variants of pthreads functions for setting
985dnl the name of the current thread:
986dnl
987dnl glibc: int pthread_setname_np(pthread_t, const char *name);
988dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
989dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
990dnl
991dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
992dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
993dnl provide to it.
994dnl
995dnl This macro defines:
996dnl
997dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
998dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
999dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1000AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1001 [AC_CHECK_FUNCS([pthread_set_name_np])
1002 if test $ac_cv_func_pthread_set_name_np != yes; then
1003 AC_CACHE_CHECK(
1004 [for pthread_setname_np() variant],
1005 [ovs_cv_pthread_setname_np],
1006 [AC_LINK_IFELSE(
a0903134 1007 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1008 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1009 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1010 [AC_LINK_IFELSE(
a0903134 1011 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1012], [pthread_setname_np(pthread_self(), "%s", "name");])],
1013 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1014 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1015 case $ovs_cv_pthread_setname_np in # (
1016 glibc)
a0903134
YT		 1017 AC_DEFINE(
1018 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1019 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1020 ;; # (
8a8cd0ac 1021 netbsd)
a0903134
YT		 1022 AC_DEFINE(
1023 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1024 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1025 ;;
8a8cd0ac
BP		 1026 esac
1027 fi])
5020f5f0
BP		 1028
1029dnl OVS_CHECK_LINUX_HOST.
1030dnl
1031dnl Checks whether we're building for a Linux host, based on the presence of
1032dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1033dnl LINUX based on the result.
1034AC_DEFUN([OVS_CHECK_LINUX_HOST],
1035 [AC_CACHE_CHECK(
1036 [whether __linux__ is defined],
1037 [ovs_cv_linux],
1038 [AC_COMPILE_IFELSE(
1039 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1040 [ovs_cv_linux=true],
1041 [ovs_cv_linux=false])])
1042 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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