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rhel: Fix upgrade path
[ovs.git] / acinclude.m4
CommitLineData
064af421
BP		 1# -*- autoconf -*-
2
344f6253 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc.
064af421 4#
a14bc59f
BP		 5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at:
064af421 8#
a14bc59f
BP		 9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
064af421 16
a64e37a1
BP		 17dnl OVS_ENABLE_WERROR
18AC_DEFUN([OVS_ENABLE_WERROR],
19 [AC_ARG_ENABLE(
20 [Werror],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
95626395 25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
308bf988
BP		 26 fi])
27
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
df265086
BP		 35 AC_SUBST([FLAKE8_WERROR])
36
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
40 else
41 SPARSE_WERROR=
42 fi
43 AC_SUBST([SPARSE_WERROR])])
a64e37a1 44
e3438006 45dnl OVS_CHECK_LINUX
064af421 46dnl
997d327d 47dnl Configure linux kernel source tree
e3438006 48AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 49 AC_ARG_WITH([linux],
50 [AC_HELP_STRING([--with-linux=/path/to/linux],
51 [Specify the Linux kernel build directory])])
52 AC_ARG_WITH([linux-source],
53 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
54 [Specify the Linux kernel source directory
a0903134
YT		 55 (usually figured out automatically from build
56 directory)])])
8a2d6596
BP		 57
58 # Deprecated equivalents to --with-linux, --with-linux-source.
59 AC_ARG_WITH([l26])
60 AC_ARG_WITH([l26-source])
61
62 if test X"$with_linux" != X; then
63 KBUILD=$with_linux
64 elif test X"$with_l26" != X; then
65 KBUILD=$with_l26
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
67 else
68 KBUILD=
69 fi
70
71 if test X"$KBUILD" != X; then
72 if test X"$with_linux_source" != X; then
73 KSRC=$with_linux_source
74 elif test X"$with_l26_source" != X; then
75 KSRC=$with_l26_source
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 77 else
78 KSRC=
8a2d6596
BP		 79 fi
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
82 fi
83
e3438006
BP		 84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
86 case $KBUILD in
0b6d72fc 87 /*) ;;
e3438006 88 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 89 esac
064af421 90
7c9e113b
BP		 91 # The build directory is what the user provided.
92 # Make sure that it exists.
8a2d6596 93 AC_MSG_CHECKING([for Linux build directory])
e3438006 94 if test -d "$KBUILD"; then
a0903134
YT		 95 AC_MSG_RESULT([$KBUILD])
96 AC_SUBST(KBUILD)
064af421 97 else
a0903134
YT		 98 AC_MSG_RESULT([no])
99 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 100 fi
101
7c9e113b 102 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 103 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 104 # Use heuristics to find the source headers.
8a2d6596 105 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
108 case $KSRC in
f5fb5de6 109 /*) ;;
e3438006 110 *) KSRC=`pwd`/$KSRC ;;
b57f675c 111 esac
e3438006 112 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 114 fi
115 else
e3438006
BP		 116 KSRC=$KBUILD
117 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 118 # Debian kernel build Makefiles tend to include a line of the form:
119 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
120 # First try to extract the source directory from this line.
121 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
122 if test ! -e "$KSRC"/include/linux/kernel.h; then
123 # Didn't work. Fall back to name-based heuristics that used to work.
124 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
125 */build)
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
127 ;; # (
128 *)
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
130 ;;
131 esac
132 fi
f5fb5de6 133 fi
fe0731b1 134 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 136 fi
137 fi
e3438006 138 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 139
140 AC_MSG_CHECKING([for kernel version])
71fe9970 141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 144 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 145 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
148 else
149 kversion=$version.$patchlevel.$sublevel
7c9e113b 150 fi
71fe9970
BP		 151 AC_MSG_RESULT([$kversion])
152
3afcde43 153 if test "$version" -ge 4; then
007ad72f 154 if test "$version" = 4 && test "$patchlevel" -le 18; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
007ad72f 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.18.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 160 : # Linux 3.x
71fe9970 161 else
8063e095 162 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 163 fi
2520f452
IY		 164 if (test ! -e "$KBUILD"/include/linux/version.h && \
165 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 166 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
167 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 168 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 169 fi
e3438006 170 OVS_CHECK_LINUX_COMPAT
064af421 171 fi
e3438006 172 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 173])
174
1dc0da67
PB		 175dnl OVS_CHECK_LINUX_TC
176dnl
177dnl Configure Linux tc compat.
178AC_DEFUN([OVS_CHECK_LINUX_TC], [
179 AC_COMPILE_IFELSE([
180 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
dd83253e 181 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
1dc0da67 182 ])],
dd83253e
OG		 183 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
184 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
1dc0da67
PB		 185
186 AC_COMPILE_IFELSE([
187 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
188 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
189 ])],
190 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 191 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67
PB		 192
193 AC_COMPILE_IFELSE([
194 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 195 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 196 ])],
4b12e454
OG		 197 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
198 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 199
200 AC_COMPILE_IFELSE([
201 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
202 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
203 ])],
204 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 205 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
1dc0da67
PB		 206])
207
8a9562d2
PS		 208dnl OVS_CHECK_DPDK
209dnl
210dnl Configure DPDK source tree
211AC_DEFUN([OVS_CHECK_DPDK], [
212 AC_ARG_WITH([dpdk],
213 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 214 [Specify the DPDK build directory])],
215 [have_dpdk=true])
8a9562d2 216
40b5ea86 217 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 218 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 219 AC_MSG_RESULT([no])
220 DPDKLIB_FOUND=false
221 else
222 AC_MSG_RESULT([yes])
223 case "$with_dpdk" in
224 yes)
225 DPDK_AUTO_DISCOVER="true"
96195c09
CE		 226 PKG_CHECK_MODULES([DPDK], [libdpdk],
227 [DPDK_INCLUDE="$DPDK_CFLAGS"],
228 [DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"])
40b5ea86
BB		 229 ;;
230 *)
231 DPDK_AUTO_DISCOVER="false"
96195c09 232 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 233 # If 'with_dpdk' is passed install directory, point to headers
234 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 235 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
236 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
237 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
238 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 239 fi
40b5ea86
BB		 240 DPDK_LIB_DIR="$with_dpdk/lib"
241 ;;
242 esac
8a9562d2 243
18f777b2 244 DPDK_LIB="-ldpdk"
8a9562d2 245
95626395
TG		 246 ovs_save_CFLAGS="$CFLAGS"
247 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 248 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 249 if test "$DPDK_AUTO_DISCOVER" = "false"; then
250 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
251 fi
252
435aaddd
CL		 253 AC_COMPILE_IFELSE([
254 AC_LANG_PROGRAM(
255 [
256 #include <rte_config.h>
e5d0725a 257#if defined(RTE_LIBRTE_VHOST_NUMA) || defined(RTE_EAL_NUMA_AWARE_HUGEPAGES)
435aaddd
CL		 258#error
259#endif
260 ], [])
261 ], [],
262 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0 263 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 264
4b88d678
CL		 265 AC_COMPILE_IFELSE([
266 AC_LANG_PROGRAM(
267 [
268 #include <rte_config.h>
269#if RTE_LIBRTE_PMD_PCAP
270#error
271#endif
272 ], [])
273 ], [],
274 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
4b88d678
CL		 275 AC_COMPILE_IFELSE([
276 AC_LANG_PROGRAM(
277 [
278 #include <rte_config.h>
279#if RTE_LIBRTE_PDUMP
280#error
281#endif
282 ], [])
283 ], [],
284 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
285 ])
286
fc3b425f
TR		 287 AC_COMPILE_IFELSE([
288 AC_LANG_PROGRAM(
289 [
290 #include <rte_config.h>
291#if RTE_LIBRTE_MLX5_PMD
292#error
293#endif
294 ], [])
295 ], [],
bd57fa98 296 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])])
fc3b425f 297
343fdf17
EB		 298 AC_COMPILE_IFELSE([
299 AC_LANG_PROGRAM(
300 [
301 #include <rte_config.h>
302#if defined(RTE_LIBRTE_MLX5_PMD) && !defined(RTE_LIBRTE_MLX5_DLOPEN_DEPS)
303#error
304#endif
305 ], [])
306 ], [],
307 [AC_SEARCH_LIBS([mlx5dv_create_wq],[mlx5],[],[AC_MSG_ERROR([unable to find libmlx5, install the dependency package])])])
308
1ed3679a
EB		 309 AC_COMPILE_IFELSE([
310 AC_LANG_PROGRAM(
311 [
312 #include <rte_config.h>
313#if defined(RTE_LIBRTE_MLX4_PMD) && !defined(RTE_LIBRTE_MLX4_DLOPEN_DEPS)
314#error
315#endif
316 ], [])
317 ], [],
318 [AC_SEARCH_LIBS([mlx4dv_init_obj],[mlx4],[],[AC_MSG_ERROR([unable to find libmlx4, install the dependency package])])])
319
343fdf17
EB		 320 AC_COMPILE_IFELSE([
321 AC_LANG_PROGRAM(
322 [
323 #include <rte_config.h>
324#if defined(RTE_LIBRTE_MLX5_PMD) && !defined(RTE_LIBRTE_MLX5_DLOPEN_DEPS)
325#error
1ed3679a
EB		 326#endif
327#if defined(RTE_LIBRTE_MLX4_PMD) && !defined(RTE_LIBRTE_MLX4_DLOPEN_DEPS)
328#error
343fdf17
EB		 329#endif
330 ], [])
331 ], [],
332 [AC_SEARCH_LIBS([verbs_init_cq],[ibverbs],[],[AC_MSG_ERROR([unable to find libibverbs, install the dependency package])])])
333
c1223b11
DDP		 334 # On some systems we have to add -ldl to link with dpdk
335 #
336 # This code, at first, tries to link without -ldl (""),
337 # then adds it and tries again.
338 # Before each attempt the search cache must be unset,
339 # otherwise autoconf will stick with the old result
340
40b5ea86 341 DPDKLIB_FOUND=false
c1223b11
DDP		 342 save_LIBS=$LIBS
343 for extras in "" "-ldl"; do
56a3b1db 344 LIBS="$DPDK_LIB $extras $save_LIBS"
c1223b11
DDP		 345 AC_LINK_IFELSE(
346 [AC_LANG_PROGRAM([#include <rte_config.h>
347 #include <rte_eal.h>],
348 [int rte_argc; char ** rte_argv;
349 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 350 [DPDKLIB_FOUND=true])
351 if $DPDKLIB_FOUND; then
c1223b11
DDP		 352 break
353 fi
354 done
40b5ea86
BB		 355
356 # If linking unsuccessful
357 if test "$DPDKLIB_FOUND" = "false" ; then
358 if $DPDK_AUTO_DISCOVER; then
359 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])
360 else
361 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
362 fi
c1223b11 363 fi
95626395
TG		 364 CFLAGS="$ovs_save_CFLAGS"
365 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 366 if test "$DPDK_AUTO_DISCOVER" = "false"; then
367 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
368 fi
96195c09 369 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 370 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 371
3c94676c 372 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 373 #
374 # This happens because the rest of the DPDK code doesn't use any symbol in
375 # the pmd driver objects, and the drivers register themselves using an
376 # __attribute__((constructor)) function.
377 #
378 # These options are specified inside a single -Wl directive to prevent
379 # autotools from reordering them.
3c94676c 380 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 381 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 382 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 383 fi
384
40b5ea86 385 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 386])
387
8828e5c7 388dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 389dnl
390dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 391dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
392dnl <REGEX> translated to uppercase.
064af421
BP		 393AC_DEFUN([OVS_GREP_IFELSE], [
394 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 395 if test -f $1; then
396 grep '$2' $1 >/dev/null 2>&1
397 status=$?
398 case $status in
997d327d 399 0)
7507ec48 400 AC_MSG_RESULT([yes])
8828e5c7 401 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 402 ;;
997d327d 403 1)
7507ec48
JG		 404 AC_MSG_RESULT([no])
405 $4
406 ;;
997d327d 407 *)
7507ec48
JG		 408 AC_MSG_ERROR([grep exited with status $status])
409 ;;
410 esac
411 else
412 AC_MSG_RESULT([file not found])
413 $4
414 fi
064af421
BP		 415])
416
13dd4a97
JS		 417dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
418dnl
419dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
420dnl structure definition. If this is successful, runs IF-MATCH, otherwise
421dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
422dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
423dnl translated to uppercase.
424AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
425 AC_MSG_CHECKING([whether $2 has member $3 in $1])
426 if test -f $1; then
83a27884 427 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 428 status=$?
429 case $status in
430 0)
431 AC_MSG_RESULT([yes])
432 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
433 ;;
434 1)
435 AC_MSG_RESULT([no])
436 $5
437 ;;
438 *)
439 AC_MSG_ERROR([grep exited with status $status])
440 ;;
441 esac
442 else
443 AC_MSG_RESULT([file not found])
444 $5
445 fi
446])
447
71ce9edd
JR		 448dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
449dnl
450dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
451dnl the function signature starting from the line matching FUNCTION
452dnl and ending with the line containing the closing parenthesis. If
453dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
454dnl IF-MATCH is empty then it defines to
455dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
456dnl <REGEX> translated to uppercase.
457AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
458 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
459 if test -f $1; then
460 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
461 status=$?
462 case $status in
463 0)
464 AC_MSG_RESULT([yes])
465 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
466 ;;
467 1)
468 AC_MSG_RESULT([no])
469 $5
470 ;;
471 *)
472 AC_MSG_ERROR([grep exited with status $status])
473 ;;
474 esac
475 else
476 AC_MSG_RESULT([file not found])
477 $5
478 fi
479])
480
064af421
BP		 481dnl OVS_DEFINE(NAME)
482dnl
483dnl Defines NAME to 1 in kcompat.h.
484AC_DEFUN([OVS_DEFINE], [
22bcc0e7 485 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 486])
487
e3438006 488dnl OVS_CHECK_LINUX_COMPAT
064af421 489dnl
8063e095 490dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 491dnl the directory in $KBUILD.
492AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 493 rm -f datapath/linux/kcompat.h.new
494 mkdir -p datapath/linux
495 : > datapath/linux/kcompat.h.new
4aa13c0c 496
e23775f2
PS		 497 echo '#include <linux/version.h>
498#ifndef RHEL_RELEASE_CODE
499#define RHEL_RELEASE_CODE 0
500#define RHEL_RELEASE_VERSION(a, b) 0
501#endif' >> datapath/linux/kcompat.h.new
502
e3438006 503 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 504 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
505
db1dcb23
DB		 506 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
507 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
508
e23775f2
PS		 509 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
510 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
511 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
512
e3438006 513 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 514 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 515 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 516
8aef057b 517 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 518 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 519 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
520 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 521
d923a695 522 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 523 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 524
e23775f2
PS		 525 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
526 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
527 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 528 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 529 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 530
e3438006 531 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 532 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 533 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
534 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 535 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
536 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
537
13dd4a97
JS		 538 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
539 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 540 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
541 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 542 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
543 [ip_do_fragment], [net],
544 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 545 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
546 [ip_local_out], [net],
547 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
548
cfda4537 549 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 550
551 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
552 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 553 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 554 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
555 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 556 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
557 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 558 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 559 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 560 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
561 [frags_work])
d1c390e6
JS		 562 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
563 [rwlock])
e0d45da3
JS		 564 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
565 [list_evictor])
38f45380 566 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 567 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
568 [sub_frag_mem_limit], [struct.netns_frags],
569 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
570 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
571 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 572 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
573 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 574
f2252c61
PS		 575 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
576 dnl OVS does not really need ipv6 label field, but its presence signifies that
577 dnl the stack has all required ipv6 support.
578 dnl OVS also does not need dst_cache But this dependency allows us to write
579 dnl much cleaner code.
580
3259c4ff
PS		 581 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
582 [label],
583 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
584 [iptunnel_pull_offloads],
997d327d 585 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 586 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
587 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 588
138df3e5
GR		 589 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
590 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 591 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
592 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 593 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
594 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 595 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 596 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
597 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
598 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 599 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 600 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 601 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 602 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 603 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 604 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
605 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 606 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
607 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 608 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 609 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 610 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
611 dnl So check type of tstats.
612 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
613 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 614 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
615 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 616 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 617 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
618 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
619 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
620 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 621 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 622 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
623 [extended])
7efb1e09
PS		 624 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
625 [netdev_master_upper_dev_link], [upper_priv],
626 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 627 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
628 [netdev_master_upper_dev_link_rh],
629 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
630
6c0bf091
JW		 631 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
632 [max_mtu])
39ca3383
YHW		 633 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
634 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 635
636 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
637 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 638 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
639 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 640 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
641 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
642 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
643 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 644 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
645
0643a78b 646
e4e04c3b 647 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 648 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 649
6d9b6937
JR		 650 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
651 [nf_conn], [struct timer_list[[ \t]]*timeout],
652 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
653 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
654 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
655
71ce9edd
JR		 656 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
657 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 658 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 659 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
660 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 661 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 662 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
663 [nf_ct_set])
56ec5593
JS		 664 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
665 [nf_ct_is_untracked])
ac9cd0d2
JS		 666 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
667 [nf_ct_zone_init])
eca4cde0
YS		 668 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
669 [net_ns_get])
459064e7
JS		 670 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
671 [nf_connlabels_get])
7f2ab8cd
JR		 672 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
673 [nf_connlabels_get], [int bit],
674 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 675 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
676 [nf_conn_labels], [words])
0d330e42
JR		 677 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
678 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 679 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 680 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 681 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
682 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 683
e2f3178f 684 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 685 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 686
e23775f2
PS		 687 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
688 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
689 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
690 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
691 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
692
e3438006
BP		 693 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
694 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 695 [rcu_read_lock_held])])
8fa52250 696 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 697 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 698
6a33828d
BP		 699 # Check for the proto_data_valid member in struct sk_buff. The [^@]
700 # is necessary because some versions of this header remove the
701 # member but retain the kerneldoc comment that describes it (which
702 # starts with @). The brackets must be doubled because of m4
703 # quoting rules.
e3438006 704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 705 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 708 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 711 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 712 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
713 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 714 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 715 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 716 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 717 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 718 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
719 [skb_reset_tail_pointer])
e3438006 720 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 721 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 722 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 723 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 724 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 725 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 726 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 727 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 728 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 729 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 730 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
731 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 732 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 733 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
734 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 735 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
736 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 737 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 738 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 739 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 740 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 741 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 742 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 743 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 744 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 745 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 746
e3438006 747 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 748 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 749 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 750 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 751 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
752 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 753
e3438006
BP		 754 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
755 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 756
0d03e51c 757 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 758 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 759
114fce23
SG		 760 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
761 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 762 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 763 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
764 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 765 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 766 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
767 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 768 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
769 [genl_notify], [net],
770 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
771
13dd4a97
JS		 772
773 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
774 [genl_multicast_group], [id])
fdce83a3 775 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 776
cc1d0dea 777 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 778 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 779 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 780 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 781 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 782 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
783 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 784 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
785 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
786
91b37647 787 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 788 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 789 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
790 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
791 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 792 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 793 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 794 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 795 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
796 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 797 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
798 [nla_parse], [netlink_ext_ack],
799 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 800
c4e976db
JG		 801 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
802
e3438006 803 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 804 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 805 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 806 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 807 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 808 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 809 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 810
aadd6ae9
JS		 811 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
812 [metadata_dst_alloc], [metadata_type])
813
09f27436
JG		 814 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
815
3174a818
TG		 816 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
817 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 818 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 819 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
820 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
821 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 822 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 823 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
824 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 825 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
826 [gro_receive])
e23775f2
PS		 827
828 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 829 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
830 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
831 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 832
b7ebebcd
PS		 833 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
834 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 835 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
836 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 837 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
838 [udp_add_offload], [net],
839 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 840 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
841 [nf_defrag_ipv6_enable], [net],
842 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 843 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
844 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 845 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
846 [needs_free_netdev],
847 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 848 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
849 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 850 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 851 [nf_conntrack_helper_put],
852 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 853 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 854 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 855 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
856 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 857 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
858 [extack],
859 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 860 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
861 [list],
862 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 863 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
864 [IP_CT_UNTRACKED])
36d3520b
GR		 865 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
866 [netdev_master_upper_dev_link], [extack],
867 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 868 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
869 [__LINUX_COMPILER_TYPES_H],
870 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 871 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
872 [ktime_get_ts64],
873 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 874 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
875 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
876 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 877 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
878 [ktime_get_ns],
879 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 880 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
881 frag_percpu_counter_batch[],
882 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
884 [null_compute_pseudo],
885 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
886 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
887 [__skb_checksum_convert],
888 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
889 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
890 [max_mtu],
891 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 892 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
893 [erspan_ver],
894 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
895 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
896 [SKB_GSO_IPXIP6],
897 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
898 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
899 [ip6_make_flowlabel], [fl6],
900 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
901 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
902 [auto_flowlabels],
903 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
904 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
905 [netif_keep_dst],
906 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
907 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
908 [ndo_get_iflink],
909 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
910 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
911 [skb_set_inner_ipproto],
912 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
913 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
914 [tunnel_encap_types],
915 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
916 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
917 [IFLA_IPTUN_ENCAP_TYPE],
918 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
919 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
920 [IFLA_IPTUN_COLLECT_METADATA],
921 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 922 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
923 [IFLA_GRE_ENCAP_DPORT])
924 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
925 [IFLA_GRE_COLLECT_METADATA])
926 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
927 [IFLA_GRE_IGNORE_DF])
928 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
929 [IFLA_GRE_FWMARK])
930 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
931 [IFLA_GRE_ERSPAN_INDEX])
932 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
933 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 934 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
935 [IFLA_IPTUN_FWMARK])
10f24236
GR		 936 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
937 [csum_valid],
938 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
939 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
940 [skb_checksum_simple_validate])
44a629b5
GR		 941 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
942 [void.*ndo_get_stats64],
943 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 944 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
945 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 946 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
947 [ip_tunnel_info_opts_set], [flags],
948 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
f22ca801
GR		 949 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
950 [rnd],
951 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
21a719d6 952
22bcc0e7
JG		 953 if cmp -s datapath/linux/kcompat.h.new \
954 datapath/linux/kcompat.h >/dev/null 2>&1; then
955 rm datapath/linux/kcompat.h.new
064af421 956 else
22bcc0e7 957 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 958 fi
959])
960
f6eb6b20 961dnl Checks for net/if_dl.h.
d30e714c 962dnl
d23fa2ed
YT		 963dnl (We use this as a proxy for checking whether we're building on FreeBSD
964dnl or NetBSD.)
9360d9b7
EM		 965AC_DEFUN([OVS_CHECK_IF_DL],
966 [AC_CHECK_HEADER([net/if_dl.h],
967 [HAVE_IF_DL=yes],
968 [HAVE_IF_DL=no])
969 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
970 if test "$HAVE_IF_DL" = yes; then
971 AC_DEFINE([HAVE_IF_DL], [1],
972 [Define to 1 if net/if_dl.h is available.])
d30e714c 973
d23fa2ed 974 # On these platforms we use libpcap to access network devices.
d30e714c 975 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 976 fi])
977
e50097d2
BP		 978dnl Checks for buggy strtok_r.
979dnl
980dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
981dnl with optimization that can cause segfaults:
982dnl
983dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
984AC_DEFUN([OVS_CHECK_STRTOK_R],
985 [AC_CACHE_CHECK(
986 [whether strtok_r macro segfaults on some inputs],
987 [ovs_cv_strtok_r_bug],
988 [AC_RUN_IFELSE(
989 [AC_LANG_PROGRAM([#include <stdio.h>
990 #include <string.h>
991 ],
416e7132
BP		 992 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
993 /* Assume bug is present, because relatively minor
994 changes in compiler settings (e.g. optimization
995 level) can make it crop up. */
996 return 1;
997 #else
998 char string[] = ":::";
e50097d2
BP		 999 char *save_ptr = (char *) 0xc0ffee;
1000 char *token1, *token2;
1001 token1 = strtok_r(string, ":", &save_ptr);
1002 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 1003 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 1004 printf ("%s %s\n", token1, token2);
1005 return 0;
416e7132 1006 #endif
e50097d2
BP		 1007 ]])],
1008 [ovs_cv_strtok_r_bug=no],
1009 [ovs_cv_strtok_r_bug=yes],
1010 [ovs_cv_strtok_r_bug=yes])])
1011 if test $ovs_cv_strtok_r_bug = yes; then
1012 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1013 [Define if strtok_r macro segfaults on some inputs])
1014 fi
1015])
1016
064af421
BP		 1017dnl ----------------------------------------------------------------------
1018dnl These macros are from GNU PSPP, with the following original license:
1019dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1020dnl This file is free software; the Free Software Foundation
1021dnl gives unlimited permission to copy and/or distribute it,
1022dnl with or without modifications, as long as this notice is preserved.
1023
50194820 1024AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1025 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1026 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1027 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1028 dnl Include -Werror in the compiler options, because without -Werror
1029 dnl clang's GCC-compatible compiler driver does not return a failure
1030 dnl exit status even though it complains about options it does not
1031 dnl understand.
c2deac54
YT		 1032 dnl
1033 dnl Also, check stderr as gcc exits with status 0 for options
1034 dnl rejected at getopt level.
1035 dnl % touch /tmp/a.c
1036 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1037 dnl gcc: unrecognized option '-Qunused-arguments'
1038 dnl 0
1039 dnl %
4c1e8cb9
BP		 1040 dnl
1041 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1042 dnl it does not understand, unless it has another error to report, so
1043 dnl instead of testing for -Wno-<foo>, test for the positive version.
1044 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1045 AC_COMPILE_IFELSE(
1046 [AC_LANG_SOURCE([int x;])],
1047 [if test -s conftest.err && grep "unrecognized option" conftest.err
1048 then
1049 ovs_cv_name[]=no
1050 else
1051 ovs_cv_name[]=yes
1052 fi],
1053 [ovs_cv_name[]=no])
064af421
BP		 1054 CFLAGS="$ovs_save_CFLAGS"])
1055 if test $ovs_cv_name = yes; then
83f6c050 1056 m4_if([$2], [], [:], [$2])
064af421
BP		 1057 else
1058 m4_if([$3], [], [:], [$3])
1059 fi
1060])
1061
50194820
BP		 1062dnl OVS_CHECK_WERROR
1063dnl
1064dnl Check whether the C compiler accepts -Werror.
1065dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1066AC_DEFUN([OVS_CHECK_WERROR],
1067 [WERROR=
1068 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1069
1070dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1071dnl Check whether the given C compiler OPTION is accepted.
1072dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1073AC_DEFUN([OVS_CHECK_CC_OPTION],
1074 [AC_REQUIRE([OVS_CHECK_WERROR])
1075 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1076
064af421
BP		 1077dnl OVS_ENABLE_OPTION([OPTION])
1078dnl Check whether the given C compiler OPTION is accepted.
d161c099 1079dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1080dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1081AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1082 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1083 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1084
1085dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1086dnl Check whether the given C compiler OPTION is accepted.
1087dnl If so, enable the given Automake CONDITIONAL.
1088
1089dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1090AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1091 [OVS_CHECK_CC_OPTION(
1092 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1093 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1094dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1095
1096dnl Check for too-old XenServer.
1097AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1098 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1099 [if test -e /etc/redhat-release; then
1100 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1101 fi
1102 if test -z "$ovs_cv_xsversion"; then
1103 ovs_cv_xsversion=none
1104 fi])
1105 case $ovs_cv_xsversion in
1106 none)
1107 ;;
1108
1109 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1110 [[6-9]]* | dnl XenServer 6 or later
1111 5.[[7-9]]* | dnl XenServer 5.7 or later
1112 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1113 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1114 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1115 ;;
1116
1117 *)
1118 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1119 ;;
1120 esac])
29d935d6 1121
643c0c34
BP		 1122dnl OVS_CHECK_SPARSE_TARGET
1123dnl
1124dnl The "cgcc" script from "sparse" isn't very good at detecting the
1125dnl target for which the code is being built. This helps it out.
1126AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1127 [AC_CACHE_CHECK(
1128 [target hint for cgcc],
1129 [ac_cv_sparse_target],
1130 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1131 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1132 [x86_64-*], [ac_cv_sparse_target=x86_64],
1133 [ac_cv_sparse_target=other])])
1134 AS_CASE([$ac_cv_sparse_target],
1135 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1136 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1137 [SPARSEFLAGS= CGCCFLAGS=])
1138 AC_SUBST([SPARSEFLAGS])
1139 AC_SUBST([CGCCFLAGS])])
1140
32e96ab7
AZ		 1141dnl OVS_SPARSE_EXTRA_INCLUDES
1142dnl
1143dnl The cgcc script from "sparse" does not search gcc's default
1144dnl search path. Get the default search path from GCC and pass
1145dnl them to sparse.
1146AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1147 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1148 [`$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 ' ' `] ))
1149
29d935d6
BP		 1150dnl OVS_ENABLE_SPARSE
1151AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1152 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1153 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1154 : ${SPARSE=sparse}
1155 AC_SUBST([SPARSE])
1156 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1157 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1158
1159 AC_ARG_ENABLE(
1160 [sparse],
1161 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1162 [], [enable_sparse=no])
1163 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1164
0eaaacac
FL		 1165dnl OVS_CTAGS_IDENTIFIERS
1166dnl
1167dnl ctags ignores symbols with extras identifiers. This builds a list of
1168dnl specially handled identifiers to be ignored.
1169AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1170 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1171 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1172
8a8cd0ac
BP		 1173dnl OVS_PTHREAD_SET_NAME
1174dnl
1175dnl This checks for three known variants of pthreads functions for setting
1176dnl the name of the current thread:
1177dnl
1178dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1179dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1180dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1181dnl
1182dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1183dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1184dnl provide to it.
1185dnl
1186dnl This macro defines:
1187dnl
1188dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1189dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1190dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1191AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1192 [AC_CHECK_FUNCS([pthread_set_name_np])
1193 if test $ac_cv_func_pthread_set_name_np != yes; then
1194 AC_CACHE_CHECK(
1195 [for pthread_setname_np() variant],
1196 [ovs_cv_pthread_setname_np],
1197 [AC_LINK_IFELSE(
a0903134 1198 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1199 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1200 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1201 [AC_LINK_IFELSE(
a0903134 1202 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1203], [pthread_setname_np(pthread_self(), "%s", "name");])],
1204 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1205 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1206 case $ovs_cv_pthread_setname_np in # (
1207 glibc)
a0903134
YT		 1208 AC_DEFINE(
1209 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1210 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1211 ;; # (
8a8cd0ac 1212 netbsd)
a0903134
YT		 1213 AC_DEFINE(
1214 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1215 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1216 ;;
8a8cd0ac
BP		 1217 esac
1218 fi])
5020f5f0
BP		 1219
1220dnl OVS_CHECK_LINUX_HOST.
1221dnl
1222dnl Checks whether we're building for a Linux host, based on the presence of
1223dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1224dnl LINUX based on the result.
1225AC_DEFUN([OVS_CHECK_LINUX_HOST],
1226 [AC_CACHE_CHECK(
1227 [whether __linux__ is defined],
1228 [ovs_cv_linux],
1229 [AC_COMPILE_IFELSE(
1230 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1231 [ovs_cv_linux=true],
1232 [ovs_cv_linux=false])])
1233 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
openvswitch packages for PVE