3 # Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019 Nicira, Inc.
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:
9 # http://www.apache.org/licenses/LICENSE-2.0
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.
18 AC_DEFUN([OVS_ENABLE_WERROR],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
35 AC_SUBST([FLAKE8_WERROR])
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
43 AC_SUBST([SPARSE_WERROR])])
47 dnl Configure linux kernel source tree
48 AC_DEFUN([OVS_CHECK_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
55 (usually figured out automatically from build
58 # Deprecated equivalents to --with-linux, --with-linux-source.
60 AC_ARG_WITH([l26-source])
62 if test X"$with_linux" != X; then
64 elif test X"$with_l26" != X; then
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
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
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
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])
84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
88 *) KBUILD=`pwd`/$KBUILD ;;
91 # The build directory is what the user provided.
92 # Make sure that it exists.
93 AC_MSG_CHECKING([for Linux build directory])
94 if test -d "$KBUILD"; then
95 AC_MSG_RESULT([$KBUILD])
99 AC_ERROR([source dir $KBUILD doesn't exist])
102 # Debian breaks kernel headers into "source" header and "build" headers.
103 # We want the source headers, but $KBUILD gives us the "build" headers.
104 # Use heuristics to find the source headers.
105 AC_MSG_CHECKING([for Linux source directory])
106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
110 *) KSRC=`pwd`/$KSRC ;;
112 if test ! -e $KSRC/include/linux/kernel.h; then
113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
117 if test ! -e $KSRC/include/linux/kernel.h; then
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 # (
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
134 if test ! -e "$KSRC"/include/linux/kernel.h; then
135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
138 AC_MSG_RESULT([$KSRC])
140 AC_MSG_CHECKING([for kernel version])
141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
144 if test X"$version" = X || test X"$patchlevel" = X; then
145 AC_ERROR([cannot determine kernel version])
146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
149 kversion=$version.$patchlevel.$sublevel
151 AC_MSG_RESULT([$kversion])
153 if test "$version" -ge 5; then
154 if test "$version" = 5 && test "$patchlevel" -le 0; then
157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 5.0.x is not supported (please refer to the FAQ for advice)])
159 elif test "$version" = 4; then
161 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
164 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
166 if (test ! -e "$KBUILD"/include/linux/version.h && \
167 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
168 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
169 test ! -e "$KBUILD"/include/generated/autoconf.h); then
170 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
172 OVS_CHECK_LINUX_COMPAT
174 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
177 dnl OVS_CHECK_LINUX_TC
179 dnl Configure Linux tc compat.
180 AC_DEFUN([OVS_CHECK_LINUX_TC], [
182 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
183 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
185 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
186 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
189 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
190 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
192 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
193 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
196 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
197 int x = TCA_TUNNEL_KEY_ENC_TTL;
199 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
200 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
203 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
204 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
206 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
207 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
210 AC_LANG_PROGRAM([#include <linux/tc_act/tc_skbedit.h>], [
211 int x = TCA_SKBEDIT_FLAGS;
213 [AC_DEFINE([HAVE_TCA_SKBEDIT_FLAGS], [1],
214 [Define to 1 if TCA_SKBEDIT_FLAGS is available.])])
217 dnl OVS_CHECK_LINUX_SCTP_CT
219 dnl Checks for kernels which need additional SCTP state
220 AC_DEFUN([OVS_CHECK_LINUX_SCTP_CT], [
222 AC_LANG_PROGRAM([#include <linux/netfilter/nfnetlink.h>
223 #include <linux/netfilter/nfnetlink_conntrack.h>
224 #include <linux/netfilter/nf_conntrack_common.h>
225 #include <linux/netfilter/nf_conntrack_sctp.h>], [
226 int x = SCTP_CONNTRACK_HEARTBEAT_SENT;
228 [AC_DEFINE([HAVE_SCTP_CONNTRACK_HEARTBEATS], [1],
229 [Define to 1 if SCTP_CONNTRACK_HEARTBEAT_SENT is available.])])
232 dnl OVS_FIND_DEPENDENCY(FUNCTION, SEARCH_LIBS, NAME_TO_PRINT)
234 dnl Check for a function in a library list.
235 AC_DEFUN([OVS_FIND_DEPENDENCY], [
236 AC_SEARCH_LIBS([$1], [$2], [], [
237 AC_MSG_ERROR([unable to find $3, install the dependency package])
241 dnl OVS_CHECK_LINUX_AF_XDP
243 dnl Check both Linux kernel AF_XDP and libbpf support
244 AC_DEFUN([OVS_CHECK_LINUX_AF_XDP], [
245 AC_ARG_ENABLE([afxdp],
246 [AC_HELP_STRING([--enable-afxdp], [Enable AF-XDP support])],
247 [], [enable_afxdp=no])
248 AC_MSG_CHECKING([whether AF_XDP is enabled])
249 if test "$enable_afxdp" != yes; then
256 AC_CHECK_HEADER([bpf/libbpf.h], [],
257 [AC_MSG_ERROR([unable to find bpf/libbpf.h for AF_XDP support])])
259 AC_CHECK_HEADER([linux/if_xdp.h], [],
260 [AC_MSG_ERROR([unable to find linux/if_xdp.h for AF_XDP support])])
262 AC_CHECK_HEADER([bpf/xsk.h], [],
263 [AC_MSG_ERROR([unable to find bpf/xsk.h for AF_XDP support])])
265 AC_CHECK_FUNCS([pthread_spin_lock], [],
266 [AC_MSG_ERROR([unable to find pthread_spin_lock for AF_XDP support])])
268 AC_DEFINE([HAVE_AF_XDP], [1],
269 [Define to 1 if AF_XDP support is available and enabled.])
270 LIBBPF_LDADD=" -lbpf -lelf"
271 AC_SUBST([LIBBPF_LDADD])
273 AM_CONDITIONAL([HAVE_AF_XDP], test "$AF_XDP_ENABLE" = true)
278 dnl Configure DPDK source tree
279 AC_DEFUN([OVS_CHECK_DPDK], [
281 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
282 [Specify the DPDK build directory])],
285 AC_MSG_CHECKING([whether dpdk datapath is enabled])
286 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
293 DPDK_AUTO_DISCOVER="true"
294 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
295 DPDK_INCLUDE="$DPDK_CFLAGS"
296 DPDK_LIB="$DPDK_LIBS"], [
297 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
301 DPDK_AUTO_DISCOVER="false"
302 DPDK_INCLUDE_PATH="$with_dpdk/include"
303 # If 'with_dpdk' is passed install directory, point to headers
304 # installed in $DESTDIR/$prefix/include/dpdk
305 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
306 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
307 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
308 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
310 DPDK_LIB_DIR="$with_dpdk/lib"
315 ovs_save_CFLAGS="$CFLAGS"
316 ovs_save_LDFLAGS="$LDFLAGS"
317 CFLAGS="$CFLAGS $DPDK_INCLUDE"
318 if test "$DPDK_AUTO_DISCOVER" = "false"; then
319 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
322 AC_CHECK_HEADERS([rte_config.h], [], [
323 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
324 ], [AC_INCLUDES_DEFAULT])
326 AC_CHECK_DECLS([RTE_LIBRTE_VHOST_NUMA, RTE_EAL_NUMA_AWARE_HUGEPAGES], [
327 OVS_FIND_DEPENDENCY([get_mempolicy], [numa], [libnuma])
328 ], [], [[#include <rte_config.h>]])
330 AC_CHECK_DECL([RTE_LIBRTE_VHOST_NUMA], [
331 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])
332 ], [], [[#include <rte_config.h>]])
334 AC_CHECK_DECL([RTE_LIBRTE_PMD_PCAP], [
335 OVS_FIND_DEPENDENCY([pcap_dump], [pcap], [libpcap])
336 AC_CHECK_DECL([RTE_LIBRTE_PDUMP], [
337 AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])
338 ], [], [[#include <rte_config.h>]])
339 ], [], [[#include <rte_config.h>]])
341 AC_CHECK_DECL([RTE_LIBRTE_MLX5_PMD], [dnl found
342 OVS_FIND_DEPENDENCY([mnl_attr_put], [mnl], [libmnl])
343 AC_CHECK_DECL([RTE_LIBRTE_MLX5_DLOPEN_DEPS], [], [dnl not found
344 OVS_FIND_DEPENDENCY([mlx5dv_create_wq], [mlx5], [libmlx5])
345 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
346 ], [[#include <rte_config.h>]])
347 ], [], [[#include <rte_config.h>]])
349 AC_CHECK_DECL([RTE_LIBRTE_MLX4_PMD], [dnl found
350 AC_CHECK_DECL([RTE_LIBRTE_MLX4_DLOPEN_DEPS], [], [dnl not found
351 OVS_FIND_DEPENDENCY([mlx4dv_init_obj], [mlx4], [libmlx4])
352 OVS_FIND_DEPENDENCY([verbs_init_cq], [ibverbs], [libibverbs])
353 ], [[#include <rte_config.h>]])
354 ], [], [[#include <rte_config.h>]])
356 # DPDK uses dlopen to load plugins.
357 OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])
359 AC_MSG_CHECKING([whether linking with dpdk works])
360 LIBS="$DPDK_LIB $LIBS"
362 [AC_LANG_PROGRAM([#include <rte_config.h>
363 #include <rte_eal.h>],
364 [int rte_argc; char ** rte_argv;
365 rte_eal_init(rte_argc, rte_argv);])],
366 [AC_MSG_RESULT([yes])
369 if test "$DPDK_AUTO_DISCOVER" = "true"; then
370 AC_MSG_ERROR(m4_normalize([
371 Could not find DPDK library in default search path, Use --with-dpdk
372 to specify the DPDK library installed in non-standard location]))
374 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
378 CFLAGS="$ovs_save_CFLAGS"
379 LDFLAGS="$ovs_save_LDFLAGS"
380 if test "$DPDK_AUTO_DISCOVER" = "false"; then
381 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
383 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
384 OVS_ENABLE_OPTION([-mssse3])
386 # DPDK pmd drivers are not linked unless --whole-archive is used.
388 # This happens because the rest of the DPDK code doesn't use any symbol in
389 # the pmd driver objects, and the drivers register themselves using an
390 # __attribute__((constructor)) function.
392 # These options are specified inside a single -Wl directive to prevent
393 # autotools from reordering them.
395 # OTOH newer versions of dpdk pkg-config (generated with Meson)
396 # will already have flagged just the right set of libs with
397 # --whole-archive - in those cases do not wrap it once more.
399 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
400 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
402 AC_SUBST([DPDK_vswitchd_LDFLAGS])
403 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
406 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
409 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
411 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
412 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
413 dnl <REGEX> translated to uppercase.
414 AC_DEFUN([OVS_GREP_IFELSE], [
415 AC_MSG_CHECKING([whether $2 matches in $1])
417 grep '$2' $1 >/dev/null 2>&1
422 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
429 AC_MSG_ERROR([grep exited with status $status])
433 AC_MSG_RESULT([file not found])
438 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
440 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
441 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
442 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
443 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
444 dnl translated to uppercase.
445 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
446 AC_MSG_CHECKING([whether $2 has member $3 in $1])
448 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
453 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
460 AC_MSG_ERROR([grep exited with status $status])
464 AC_MSG_RESULT([file not found])
469 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
471 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
472 dnl the function signature starting from the line matching FUNCTION
473 dnl and ending with the line containing the closing parenthesis. If
474 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
475 dnl IF-MATCH is empty then it defines to
476 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
477 dnl <REGEX> translated to uppercase.
478 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
479 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
481 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
486 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
493 AC_MSG_ERROR([grep exited with status $status])
497 AC_MSG_RESULT([file not found])
504 dnl Defines NAME to 1 in kcompat.h.
505 AC_DEFUN([OVS_DEFINE], [
506 echo '#define $1 1' >> datapath/linux/kcompat.h.new
509 dnl OVS_CHECK_LINUX_COMPAT
511 dnl Runs various Autoconf checks on the Linux kernel source in
512 dnl the directory in $KBUILD.
513 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
514 rm -f datapath/linux/kcompat.h.new
515 mkdir -p datapath/linux
516 : > datapath/linux/kcompat.h.new
518 echo '#include <linux/version.h>
519 #ifndef RHEL_RELEASE_CODE
520 #define RHEL_RELEASE_CODE 0
521 #define RHEL_RELEASE_VERSION(a, b) 0
522 #endif' >> datapath/linux/kcompat.h.new
524 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
525 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
527 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
528 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
530 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
531 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
532 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
534 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
535 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
536 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
538 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
539 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
540 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
541 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
543 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
544 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
546 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
547 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
548 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
549 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
550 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
551 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_hwaccel_clear_tag])
553 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
554 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
555 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
556 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
557 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
558 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
560 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
561 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
562 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
563 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
564 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
565 [ip_do_fragment], [net],
566 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
567 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
568 [ip_local_out], [net],
569 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
571 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
573 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
574 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
575 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
576 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
577 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
578 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
579 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
580 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
581 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
582 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
584 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
586 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
588 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
589 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
590 [sub_frag_mem_limit], [struct.netns_frags],
591 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
592 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
593 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
594 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
595 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
597 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
598 dnl OVS does not really need ipv6 label field, but its presence signifies that
599 dnl the stack has all required ipv6 support.
600 dnl OVS also does not need dst_cache But this dependency allows us to write
601 dnl much cleaner code.
603 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
605 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
606 [iptunnel_pull_offloads],
607 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
608 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
609 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
611 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
612 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
613 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
614 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
615 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
616 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
617 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
618 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
619 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
620 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
621 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
622 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
623 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
624 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
625 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
626 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
627 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
628 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
629 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
630 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
631 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
632 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
633 dnl So check type of tstats.
634 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
635 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
636 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
637 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
638 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
639 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
640 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
641 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
642 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
643 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
644 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
646 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
647 [netdev_master_upper_dev_link], [upper_priv],
648 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
649 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
650 [netdev_master_upper_dev_link_rh],
651 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
653 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
655 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
656 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
657 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
658 [dev_change_flags], [extack],
659 [OVS_DEFINE([HAVE_DEV_CHANGE_FLAGS_TAKES_EXTACK])])
661 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
662 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state],
663 [struct net ], [OVS_DEFINE([HAVE_NF_HOOK_STATE_NET])])
664 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
665 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
666 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
667 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
668 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
669 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
670 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
671 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
674 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
675 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
677 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
678 [nf_conn], [struct timer_list[[ \t]]*timeout],
679 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
680 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
681 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
683 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
684 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
685 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
686 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
687 [nf_ct_get_tuplepr], [struct.net],
688 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
689 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
691 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
692 [nf_ct_is_untracked])
693 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
695 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
697 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
699 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
700 [nf_connlabels_get], [int bit],
701 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
702 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
703 [nf_conn_labels], [words])
704 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
705 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
706 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
707 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
708 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
709 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
711 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
712 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
714 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
715 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
716 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
717 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
718 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
720 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
721 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
722 [rcu_read_lock_held])])
723 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
724 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
725 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/rtnetlink.h],
726 [rtnl_create_link], [extack],
727 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_TAKES_EXTACK])])
729 # Check for the proto_data_valid member in struct sk_buff. The [^@]
730 # is necessary because some versions of this header remove the
731 # member but retain the kerneldoc comment that describes it (which
732 # starts with @). The brackets must be doubled because of m4
734 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
735 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
736 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
737 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
738 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
739 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
740 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
741 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
742 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
743 [OVS_DEFINE([HAVE_U16_RXHASH])])
744 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
745 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
746 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
747 [skb_copy_from_linear_data_offset])
748 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
749 [skb_reset_tail_pointer])
750 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
751 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
752 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
753 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
754 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
755 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
756 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
757 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
758 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
759 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
760 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
761 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
762 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
763 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
764 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
765 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
766 [OVS_DEFINE([HAVE_L4_RXHASH])])
767 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
768 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
769 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
770 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
771 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
772 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
773 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
774 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
775 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
777 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
778 [OVS_DEFINE([HAVE_BOOL_TYPE])])
779 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
780 [OVS_DEFINE([HAVE_CSUM_TYPES])])
781 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
782 [OVS_DEFINE([HAVE_CSUM_TYPES])])
784 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
785 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
787 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
788 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
790 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
791 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
792 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
793 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
794 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
795 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
796 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
797 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
798 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
799 [genl_notify], [net],
800 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
803 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
804 [genl_multicast_group], [id])
805 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
807 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
808 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
809 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
810 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
811 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
812 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
813 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
814 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
815 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
817 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
818 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
819 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
820 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
821 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
822 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
823 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
824 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
825 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
826 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
827 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
828 [nla_parse], [netlink_ext_ack],
829 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
831 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
833 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
834 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
835 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
836 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
837 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
838 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
839 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
841 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
842 [metadata_dst_alloc], [metadata_type])
844 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
846 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
847 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
848 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
849 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
850 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
851 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
852 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
853 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
854 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
855 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
858 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
859 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
860 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
861 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
863 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
864 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
865 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
866 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
867 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
868 [udp_add_offload], [net],
869 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
870 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
871 [nf_defrag_ipv6_enable], [net],
872 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
873 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
874 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
875 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
877 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
878 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
879 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
880 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
881 [nf_conntrack_helper_put],
882 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
883 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
884 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
885 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
886 [OVS_DEFINE([HAVE_DST_NOCACHE])])
887 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
889 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
890 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
892 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
893 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
895 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
896 [netdev_master_upper_dev_link], [extack],
897 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
898 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
899 [__LINUX_COMPILER_TYPES_H],
900 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
901 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
903 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
904 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
905 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
906 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
907 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
909 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
910 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
911 frag_percpu_counter_batch[],
912 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
913 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
914 [null_compute_pseudo],
915 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
916 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
917 [__skb_checksum_convert],
918 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
919 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
921 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
922 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
924 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
925 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
927 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
928 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
929 [ip6_make_flowlabel], [fl6],
930 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
931 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
933 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
934 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
936 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
937 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
939 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
940 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
941 [skb_set_inner_ipproto],
942 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
943 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
944 [tunnel_encap_types],
945 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
946 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
947 [IFLA_IPTUN_ENCAP_TYPE],
948 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
949 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
950 [IFLA_IPTUN_COLLECT_METADATA],
951 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
952 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
953 [IFLA_GRE_ENCAP_DPORT])
954 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
955 [IFLA_GRE_COLLECT_METADATA])
956 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
957 [IFLA_GRE_IGNORE_DF])
958 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
960 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
961 [IFLA_GRE_ERSPAN_INDEX])
962 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
963 [IFLA_GRE_ERSPAN_HWID])
964 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
966 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
968 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
969 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
971 [OVS_DEFINE([HAVE_SKBUFF_VLAN_PRESENT])])
972 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
973 [skb_checksum_simple_validate])
974 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
975 [void.*ndo_get_stats64],
976 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
977 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
978 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
979 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
980 [ip_tunnel_info_opts_set], [flags],
981 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
982 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
984 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
985 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
986 [OVS_DEFINE([HAVE_OVERFLOW_H])])
987 OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
988 [OVS_DEFINE([HAVE_STRUCT_SIZE])])
989 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
990 [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
991 OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
992 [OVS_DEFINE([HAVE_KVMALLOC_NODE])])
993 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
994 [nf_conntrack_l3proto],
995 [OVS_DEFINE([HAVE_NF_CONNTRACK_L3PROATO_H])])
996 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_core.h],
997 [nf_conntrack_in], [nf_hook_state],
998 [OVS_DEFINE([HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE])])
999 OVS_GREP_IFELSE([$KSRC/include/net/ipv6_frag.h], [IP6_DEFRAG_CONNTRACK_IN],
1000 [OVS_DEFINE([HAVE_IPV6_FRAG_H])])
1001 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
1002 [nf_ct_helper_ext_add], [nf_conntrack_helper],
1003 [OVS_DEFINE([HAVE_NF_CT_HELPER_EXT_ADD_TAKES_HELPER])])
1004 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_calc_hlen],
1005 [OVS_DEFINE([HAVE_GRE_CALC_HLEN])])
1006 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [ip_gre_calc_hlen],
1007 [OVS_DEFINE([HAVE_IP_GRE_CALC_HLEN])])
1009 if cmp -s datapath/linux/kcompat.h.new \
1010 datapath/linux/kcompat.h >/dev/null 2>&1; then
1011 rm datapath/linux/kcompat.h.new
1013 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
1017 dnl Checks for net/if_dl.h.
1019 dnl (We use this as a proxy for checking whether we're building on FreeBSD
1021 AC_DEFUN([OVS_CHECK_IF_DL],
1022 [AC_CHECK_HEADER([net/if_dl.h],
1025 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
1026 if test "$HAVE_IF_DL" = yes; then
1027 AC_DEFINE([HAVE_IF_DL], [1],
1028 [Define to 1 if net/if_dl.h is available.])
1030 # On these platforms we use libpcap to access network devices.
1031 AC_SEARCH_LIBS([pcap_open_live], [pcap])
1034 dnl Checks for buggy strtok_r.
1036 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
1037 dnl with optimization that can cause segfaults:
1039 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
1040 AC_DEFUN([OVS_CHECK_STRTOK_R],
1042 [whether strtok_r macro segfaults on some inputs],
1043 [ovs_cv_strtok_r_bug],
1045 [AC_LANG_PROGRAM([#include <stdio.h>
1048 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
1049 /* Assume bug is present, because relatively minor
1050 changes in compiler settings (e.g. optimization
1051 level) can make it crop up. */
1054 char string[] = ":::";
1055 char *save_ptr = (char *) 0xc0ffee;
1056 char *token1, *token2;
1057 token1 = strtok_r(string, ":", &save_ptr);
1058 token2 = strtok_r(NULL, ":", &save_ptr);
1059 freopen ("/dev/null", "w", stdout);
1060 printf ("%s %s\n", token1, token2);
1064 [ovs_cv_strtok_r_bug=no],
1065 [ovs_cv_strtok_r_bug=yes],
1066 [ovs_cv_strtok_r_bug=yes])])
1067 if test $ovs_cv_strtok_r_bug = yes; then
1068 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
1069 [Define if strtok_r macro segfaults on some inputs])
1073 dnl ----------------------------------------------------------------------
1074 dnl These macros are from GNU PSPP, with the following original license:
1075 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
1076 dnl This file is free software; the Free Software Foundation
1077 dnl gives unlimited permission to copy and/or distribute it,
1078 dnl with or without modifications, as long as this notice is preserved.
1080 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
1081 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
1082 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1083 [ovs_save_CFLAGS="$CFLAGS"
1084 dnl Include -Werror in the compiler options, because without -Werror
1085 dnl clang's GCC-compatible compiler driver does not return a failure
1086 dnl exit status even though it complains about options it does not
1089 dnl Also, check stderr as gcc exits with status 0 for options
1090 dnl rejected at getopt level.
1091 dnl % touch /tmp/a.c
1092 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1093 dnl gcc: unrecognized option '-Qunused-arguments'
1097 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1098 dnl it does not understand, unless it has another error to report, so
1099 dnl instead of testing for -Wno-<foo>, test for the positive version.
1100 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1102 [AC_LANG_SOURCE([int x;])],
1103 [if test -s conftest.err && grep "unrecognized option" conftest.err
1110 CFLAGS="$ovs_save_CFLAGS"])
1111 if test $ovs_cv_name = yes; then
1112 m4_if([$2], [], [:], [$2])
1114 m4_if([$3], [], [:], [$3])
1118 dnl OVS_CHECK_WERROR
1120 dnl Check whether the C compiler accepts -Werror.
1121 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1122 AC_DEFUN([OVS_CHECK_WERROR],
1124 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1126 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1127 dnl Check whether the given C compiler OPTION is accepted.
1128 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1129 AC_DEFUN([OVS_CHECK_CC_OPTION],
1130 [AC_REQUIRE([OVS_CHECK_WERROR])
1131 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1133 dnl OVS_ENABLE_OPTION([OPTION])
1134 dnl Check whether the given C compiler OPTION is accepted.
1135 dnl If so, add it to WARNING_FLAGS.
1136 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1137 AC_DEFUN([OVS_ENABLE_OPTION],
1138 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1139 AC_SUBST([WARNING_FLAGS])])
1141 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1142 dnl Check whether the given C compiler OPTION is accepted.
1143 dnl If so, enable the given Automake CONDITIONAL.
1145 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1146 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1147 [OVS_CHECK_CC_OPTION(
1148 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1149 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1150 dnl ----------------------------------------------------------------------
1152 dnl Check for too-old XenServer.
1153 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1154 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1155 [if test -e /etc/redhat-release; then
1156 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1158 if test -z "$ovs_cv_xsversion"; then
1159 ovs_cv_xsversion=none
1161 case $ovs_cv_xsversion in
1165 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1166 [[6-9]]* | dnl XenServer 6 or later
1167 5.[[7-9]]* | dnl XenServer 5.7 or later
1168 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1169 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1170 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1174 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1178 dnl OVS_CHECK_SPARSE_TARGET
1180 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1181 dnl target for which the code is being built. This helps it out.
1182 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1184 [target hint for cgcc],
1185 [ac_cv_sparse_target],
1186 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1187 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1188 [x86_64-*], [ac_cv_sparse_target=x86_64],
1189 [ac_cv_sparse_target=other])])
1190 AS_CASE([$ac_cv_sparse_target],
1191 [x86], [SPARSEFLAGS= CGCCFLAGS="-target=i86 -target=host_os_specs"],
1192 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS="-target=x86_64 -target=host_os_specs"],
1193 [SPARSEFLAGS= CGCCFLAGS=])
1195 dnl Get the the default defines for vector instructions from compiler to
1196 dnl allow "sparse" correctly check the same code that will be built.
1197 dnl Required for checking DPDK headers.
1198 AC_MSG_CHECKING([vector options for cgcc])
1199 VECTOR=$($CC -dM -E - < /dev/null | grep -E "MMX|SSE|AVX" | \
1200 cut -c 9- | sed 's/ /=/' | sed 's/^/-D/' | tr '\n' ' ')
1201 AC_MSG_RESULT([$VECTOR])
1202 CGCCFLAGS="$CGCCFLAGS $VECTOR"
1204 AC_SUBST([SPARSEFLAGS])
1205 AC_SUBST([CGCCFLAGS])])
1207 dnl OVS_SPARSE_EXTRA_INCLUDES
1209 dnl The cgcc script from "sparse" does not search gcc's default
1210 dnl search path. Get the default search path from GCC and pass
1212 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1213 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1214 [`$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 ' ' `] ))
1216 dnl OVS_ENABLE_SPARSE
1217 AC_DEFUN([OVS_ENABLE_SPARSE],
1218 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1219 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1222 AC_CONFIG_COMMANDS_PRE(
1223 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1227 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1228 [], [enable_sparse=no])
1229 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1231 dnl OVS_CTAGS_IDENTIFIERS
1233 dnl ctags ignores symbols with extras identifiers. This builds a list of
1234 dnl specially handled identifiers to be ignored.
1235 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1236 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1237 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
1239 dnl OVS_PTHREAD_SET_NAME
1241 dnl This checks for three known variants of pthreads functions for setting
1242 dnl the name of the current thread:
1244 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1245 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1246 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1248 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1249 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1252 dnl This macro defines:
1254 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1255 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1256 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1257 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1258 [AC_CHECK_FUNCS([pthread_set_name_np])
1259 if test $ac_cv_func_pthread_set_name_np != yes; then
1261 [for pthread_setname_np() variant],
1262 [ovs_cv_pthread_setname_np],
1264 [AC_LANG_PROGRAM([#include <pthread.h>
1265 ], [pthread_setname_np(pthread_self(), "name");])],
1266 [ovs_cv_pthread_setname_np=glibc],
1268 [AC_LANG_PROGRAM([#include <pthread.h>
1269 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1270 [ovs_cv_pthread_setname_np=netbsd],
1271 [ovs_cv_pthread_setname_np=none])])])
1272 case $ovs_cv_pthread_setname_np in # (
1275 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1276 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1280 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1281 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1286 dnl OVS_CHECK_LINUX_HOST.
1288 dnl Checks whether we're building for a Linux host, based on the presence of
1289 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1290 dnl LINUX based on the result.
1291 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1293 [whether __linux__ is defined],
1296 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1297 [ovs_cv_linux=true],
1298 [ovs_cv_linux=false])])
1299 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])