3 # Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 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 "$version" -ge 4; then
154 if test "$version" = 4 && test "$patchlevel" -le 18; then
157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.18.x is not supported (please refer to the FAQ for advice)])
159 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
162 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
164 if (test ! -e "$KBUILD"/include/linux/version.h && \
165 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
166 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
167 test ! -e "$KBUILD"/include/generated/autoconf.h); then
168 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
170 OVS_CHECK_LINUX_COMPAT
172 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
175 dnl OVS_CHECK_LINUX_TC
177 dnl Configure Linux tc compat.
178 AC_DEFUN([OVS_CHECK_LINUX_TC], [
180 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
181 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
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.])])
187 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
188 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
190 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
191 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
194 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
195 int x = TCA_TUNNEL_KEY_ENC_TTL;
197 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
198 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
201 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
202 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
204 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
205 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
210 dnl Configure DPDK source tree
211 AC_DEFUN([OVS_CHECK_DPDK], [
213 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
214 [Specify the DPDK build directory])],
217 AC_MSG_CHECKING([whether dpdk datapath is enabled])
218 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
225 DPDK_AUTO_DISCOVER="true"
226 PKG_CHECK_MODULES([DPDK], [libdpdk],
227 [DPDK_INCLUDE="$DPDK_CFLAGS"],
228 [DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"])
231 DPDK_AUTO_DISCOVER="false"
232 DPDK_INCLUDE_PATH="$with_dpdk/include"
233 # If 'with_dpdk' is passed install directory, point to headers
234 # installed in $DESTDIR/$prefix/include/dpdk
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"
240 DPDK_LIB_DIR="$with_dpdk/lib"
247 ovs_save_CFLAGS="$CFLAGS"
248 ovs_save_LDFLAGS="$LDFLAGS"
249 CFLAGS="$CFLAGS $DPDK_INCLUDE"
250 if test "$DPDK_AUTO_DISCOVER" = "false"; then
251 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
257 #include <rte_config.h>
258 #if RTE_LIBRTE_VHOST_NUMA
263 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
264 DPDK_EXTRA_LIB="-lnuma"
265 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
270 #include <rte_config.h>
271 #if RTE_LIBRTE_PMD_PCAP
276 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
277 DPDK_EXTRA_LIB="-lpcap"
281 #include <rte_config.h>
287 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
293 #include <rte_config.h>
294 #if RTE_LIBRTE_MLX5_PMD
299 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])
300 DPDK_EXTRA_LIB="-lmnl"
301 AC_DEFINE([DPDK_MNL], [1], [MLX5 PMD detected in DPDK.])])
303 # On some systems we have to add -ldl to link with dpdk
305 # This code, at first, tries to link without -ldl (""),
306 # then adds it and tries again.
307 # Before each attempt the search cache must be unset,
308 # otherwise autoconf will stick with the old result
312 for extras in "" "-ldl"; do
313 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
315 [AC_LANG_PROGRAM([#include <rte_config.h>
316 #include <rte_eal.h>],
317 [int rte_argc; char ** rte_argv;
318 rte_eal_init(rte_argc, rte_argv);])],
319 [DPDKLIB_FOUND=true])
320 if $DPDKLIB_FOUND; then
325 # If linking unsuccessful
326 if test "$DPDKLIB_FOUND" = "false" ; then
327 if $DPDK_AUTO_DISCOVER; then
328 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])
330 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
333 CFLAGS="$ovs_save_CFLAGS"
334 LDFLAGS="$ovs_save_LDFLAGS"
335 if test "$DPDK_AUTO_DISCOVER" = "false"; then
336 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
338 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
339 OVS_ENABLE_OPTION([-mssse3])
341 # DPDK pmd drivers are not linked unless --whole-archive is used.
343 # This happens because the rest of the DPDK code doesn't use any symbol in
344 # the pmd driver objects, and the drivers register themselves using an
345 # __attribute__((constructor)) function.
347 # These options are specified inside a single -Wl directive to prevent
348 # autotools from reordering them.
349 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
350 AC_SUBST([DPDK_vswitchd_LDFLAGS])
351 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
354 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
357 dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
359 dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
360 dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
361 dnl <REGEX> translated to uppercase.
362 AC_DEFUN([OVS_GREP_IFELSE], [
363 AC_MSG_CHECKING([whether $2 matches in $1])
365 grep '$2' $1 >/dev/null 2>&1
370 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
377 AC_MSG_ERROR([grep exited with status $status])
381 AC_MSG_RESULT([file not found])
386 dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
388 dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
389 dnl structure definition. If this is successful, runs IF-MATCH, otherwise
390 dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
391 dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
392 dnl translated to uppercase.
393 AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
394 AC_MSG_CHECKING([whether $2 has member $3 in $1])
396 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
401 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
408 AC_MSG_ERROR([grep exited with status $status])
412 AC_MSG_RESULT([file not found])
417 dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
419 dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
420 dnl the function signature starting from the line matching FUNCTION
421 dnl and ending with the line containing the closing parenthesis. If
422 dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
423 dnl IF-MATCH is empty then it defines to
424 dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
425 dnl <REGEX> translated to uppercase.
426 AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
427 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
429 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
434 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
441 AC_MSG_ERROR([grep exited with status $status])
445 AC_MSG_RESULT([file not found])
452 dnl Defines NAME to 1 in kcompat.h.
453 AC_DEFUN([OVS_DEFINE], [
454 echo '#define $1 1' >> datapath/linux/kcompat.h.new
457 dnl OVS_CHECK_LINUX_COMPAT
459 dnl Runs various Autoconf checks on the Linux kernel source in
460 dnl the directory in $KBUILD.
461 AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
462 rm -f datapath/linux/kcompat.h.new
463 mkdir -p datapath/linux
464 : > datapath/linux/kcompat.h.new
466 echo '#include <linux/version.h>
467 #ifndef RHEL_RELEASE_CODE
468 #define RHEL_RELEASE_CODE 0
469 #define RHEL_RELEASE_VERSION(a, b) 0
470 #endif' >> datapath/linux/kcompat.h.new
472 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
473 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
475 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
476 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
478 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
479 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
480 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
482 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
483 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
484 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
486 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
487 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
488 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
489 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
491 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
492 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
494 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
495 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
496 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
497 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
498 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
500 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
501 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
502 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
503 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
504 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
505 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
507 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
508 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
509 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
510 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
511 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
512 [ip_do_fragment], [net],
513 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
514 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
515 [ip_local_out], [net],
516 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
518 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
520 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
521 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
522 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
523 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
524 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
525 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
526 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
527 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
528 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
529 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
531 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
533 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
535 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
536 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
537 [sub_frag_mem_limit], [struct.netns_frags],
538 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
539 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
540 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
541 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
542 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
544 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
545 dnl OVS does not really need ipv6 label field, but its presence signifies that
546 dnl the stack has all required ipv6 support.
547 dnl OVS also does not need dst_cache But this dependency allows us to write
548 dnl much cleaner code.
550 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
552 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
553 [iptunnel_pull_offloads],
554 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
555 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
556 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
558 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
559 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
560 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
561 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
562 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
563 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
564 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
565 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
566 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
567 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
568 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
569 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
570 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
571 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
572 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
573 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
574 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
575 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
576 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
577 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
578 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
579 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
580 dnl So check type of tstats.
581 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
582 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
584 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
586 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
587 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
588 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
589 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
590 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
591 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
593 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
594 [netdev_master_upper_dev_link], [upper_priv],
595 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
596 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
597 [netdev_master_upper_dev_link_rh],
598 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
600 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
602 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
603 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
605 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
606 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
607 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
608 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
609 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
610 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
611 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
612 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
613 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
616 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
617 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
619 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
620 [nf_conn], [struct timer_list[[ \t]]*timeout],
621 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
622 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
623 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
625 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
626 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
627 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
628 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
629 [nf_ct_get_tuplepr], [struct.net],
630 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
631 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
633 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
634 [nf_ct_is_untracked])
635 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
637 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
639 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
641 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
642 [nf_connlabels_get], [int bit],
643 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
644 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
645 [nf_conn_labels], [words])
646 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
647 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
648 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
649 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
650 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
651 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
653 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
654 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
656 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
657 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
658 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
659 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
660 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
662 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
663 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
664 [rcu_read_lock_held])])
665 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
666 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
668 # Check for the proto_data_valid member in struct sk_buff. The [^@]
669 # is necessary because some versions of this header remove the
670 # member but retain the kerneldoc comment that describes it (which
671 # starts with @). The brackets must be doubled because of m4
673 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
674 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
675 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
676 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
677 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
678 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
679 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
680 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
681 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
682 [OVS_DEFINE([HAVE_U16_RXHASH])])
683 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
684 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
685 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
686 [skb_copy_from_linear_data_offset])
687 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
688 [skb_reset_tail_pointer])
689 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
690 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
691 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
692 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
693 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
694 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
695 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
696 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
697 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
698 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
699 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
700 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
701 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
702 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
703 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
705 [OVS_DEFINE([HAVE_L4_RXHASH])])
706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
708 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
711 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
712 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
713 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
714 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
716 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
717 [OVS_DEFINE([HAVE_BOOL_TYPE])])
718 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
719 [OVS_DEFINE([HAVE_CSUM_TYPES])])
720 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
721 [OVS_DEFINE([HAVE_CSUM_TYPES])])
723 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
724 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
726 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
727 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
729 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
730 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
731 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
732 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
733 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
734 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
735 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
736 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
737 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
738 [genl_notify], [net],
739 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
742 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
743 [genl_multicast_group], [id])
744 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
746 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
747 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
748 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
749 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
750 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
751 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
752 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
753 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
754 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
756 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
757 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
758 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
759 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
760 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
761 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
762 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
763 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
764 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
765 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
766 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
767 [nla_parse], [netlink_ext_ack],
768 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
770 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
772 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
773 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
774 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
775 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
776 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
777 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
778 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
780 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
781 [metadata_dst_alloc], [metadata_type])
783 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
785 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
786 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
787 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
788 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
789 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
790 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
791 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
792 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
793 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
794 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
797 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
798 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
799 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
800 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
802 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
803 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
804 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
805 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
806 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
807 [udp_add_offload], [net],
808 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
809 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
810 [nf_defrag_ipv6_enable], [net],
811 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
812 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
813 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
814 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
816 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
817 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
818 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
819 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
820 [nf_conntrack_helper_put],
821 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
822 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
823 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
824 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
825 [OVS_DEFINE([HAVE_DST_NOCACHE])])
826 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
828 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
829 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
831 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
832 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
834 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
835 [netdev_master_upper_dev_link], [extack],
836 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
837 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
838 [__LINUX_COMPILER_TYPES_H],
839 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
840 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
842 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
843 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
844 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
845 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
846 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
848 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
849 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
850 frag_percpu_counter_batch[],
851 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
852 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
853 [null_compute_pseudo],
854 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
855 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
856 [__skb_checksum_convert],
857 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
858 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
860 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
861 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
863 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
864 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
866 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
867 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
868 [ip6_make_flowlabel], [fl6],
869 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
870 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
872 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
873 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
875 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
876 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
878 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
879 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
880 [skb_set_inner_ipproto],
881 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
882 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
883 [tunnel_encap_types],
884 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
885 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
886 [IFLA_IPTUN_ENCAP_TYPE],
887 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
888 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
889 [IFLA_IPTUN_COLLECT_METADATA],
890 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
891 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
892 [IFLA_GRE_ENCAP_DPORT])
893 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
894 [IFLA_GRE_COLLECT_METADATA])
895 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
896 [IFLA_GRE_IGNORE_DF])
897 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
899 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
900 [IFLA_GRE_ERSPAN_INDEX])
901 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
902 [IFLA_GRE_ERSPAN_HWID])
903 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
905 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
907 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
908 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
909 [skb_checksum_simple_validate])
910 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
911 [void.*ndo_get_stats64],
912 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
913 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
914 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
915 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
916 [ip_tunnel_info_opts_set], [flags],
917 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
918 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
920 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
922 if cmp -s datapath/linux/kcompat.h.new \
923 datapath/linux/kcompat.h >/dev/null 2>&1; then
924 rm datapath/linux/kcompat.h.new
926 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
930 dnl Checks for net/if_dl.h.
932 dnl (We use this as a proxy for checking whether we're building on FreeBSD
934 AC_DEFUN([OVS_CHECK_IF_DL],
935 [AC_CHECK_HEADER([net/if_dl.h],
938 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
939 if test "$HAVE_IF_DL" = yes; then
940 AC_DEFINE([HAVE_IF_DL], [1],
941 [Define to 1 if net/if_dl.h is available.])
943 # On these platforms we use libpcap to access network devices.
944 AC_SEARCH_LIBS([pcap_open_live], [pcap])
947 dnl Checks for buggy strtok_r.
949 dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
950 dnl with optimization that can cause segfaults:
952 dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
953 AC_DEFUN([OVS_CHECK_STRTOK_R],
955 [whether strtok_r macro segfaults on some inputs],
956 [ovs_cv_strtok_r_bug],
958 [AC_LANG_PROGRAM([#include <stdio.h>
961 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
962 /* Assume bug is present, because relatively minor
963 changes in compiler settings (e.g. optimization
964 level) can make it crop up. */
967 char string[] = ":::";
968 char *save_ptr = (char *) 0xc0ffee;
969 char *token1, *token2;
970 token1 = strtok_r(string, ":", &save_ptr);
971 token2 = strtok_r(NULL, ":", &save_ptr);
972 freopen ("/dev/null", "w", stdout);
973 printf ("%s %s\n", token1, token2);
977 [ovs_cv_strtok_r_bug=no],
978 [ovs_cv_strtok_r_bug=yes],
979 [ovs_cv_strtok_r_bug=yes])])
980 if test $ovs_cv_strtok_r_bug = yes; then
981 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
982 [Define if strtok_r macro segfaults on some inputs])
986 dnl ----------------------------------------------------------------------
987 dnl These macros are from GNU PSPP, with the following original license:
988 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
989 dnl This file is free software; the Free Software Foundation
990 dnl gives unlimited permission to copy and/or distribute it,
991 dnl with or without modifications, as long as this notice is preserved.
993 AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
994 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
995 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
996 [ovs_save_CFLAGS="$CFLAGS"
997 dnl Include -Werror in the compiler options, because without -Werror
998 dnl clang's GCC-compatible compiler driver does not return a failure
999 dnl exit status even though it complains about options it does not
1002 dnl Also, check stderr as gcc exits with status 0 for options
1003 dnl rejected at getopt level.
1004 dnl % touch /tmp/a.c
1005 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1006 dnl gcc: unrecognized option '-Qunused-arguments'
1010 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1011 dnl it does not understand, unless it has another error to report, so
1012 dnl instead of testing for -Wno-<foo>, test for the positive version.
1013 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
1015 [AC_LANG_SOURCE([int x;])],
1016 [if test -s conftest.err && grep "unrecognized option" conftest.err
1023 CFLAGS="$ovs_save_CFLAGS"])
1024 if test $ovs_cv_name = yes; then
1025 m4_if([$2], [], [:], [$2])
1027 m4_if([$3], [], [:], [$3])
1031 dnl OVS_CHECK_WERROR
1033 dnl Check whether the C compiler accepts -Werror.
1034 dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1035 AC_DEFUN([OVS_CHECK_WERROR],
1037 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1039 dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1040 dnl Check whether the given C compiler OPTION is accepted.
1041 dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1042 AC_DEFUN([OVS_CHECK_CC_OPTION],
1043 [AC_REQUIRE([OVS_CHECK_WERROR])
1044 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1046 dnl OVS_ENABLE_OPTION([OPTION])
1047 dnl Check whether the given C compiler OPTION is accepted.
1048 dnl If so, add it to WARNING_FLAGS.
1049 dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1050 AC_DEFUN([OVS_ENABLE_OPTION],
1051 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1052 AC_SUBST([WARNING_FLAGS])])
1054 dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1055 dnl Check whether the given C compiler OPTION is accepted.
1056 dnl If so, enable the given Automake CONDITIONAL.
1058 dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1059 AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1060 [OVS_CHECK_CC_OPTION(
1061 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1062 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
1063 dnl ----------------------------------------------------------------------
1065 dnl Check for too-old XenServer.
1066 AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1067 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1068 [if test -e /etc/redhat-release; then
1069 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1071 if test -z "$ovs_cv_xsversion"; then
1072 ovs_cv_xsversion=none
1074 case $ovs_cv_xsversion in
1078 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1079 [[6-9]]* | dnl XenServer 6 or later
1080 5.[[7-9]]* | dnl XenServer 5.7 or later
1081 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1082 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1083 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1087 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1091 dnl OVS_CHECK_SPARSE_TARGET
1093 dnl The "cgcc" script from "sparse" isn't very good at detecting the
1094 dnl target for which the code is being built. This helps it out.
1095 AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1097 [target hint for cgcc],
1098 [ac_cv_sparse_target],
1099 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1100 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1101 [x86_64-*], [ac_cv_sparse_target=x86_64],
1102 [ac_cv_sparse_target=other])])
1103 AS_CASE([$ac_cv_sparse_target],
1104 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1105 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1106 [SPARSEFLAGS= CGCCFLAGS=])
1107 AC_SUBST([SPARSEFLAGS])
1108 AC_SUBST([CGCCFLAGS])])
1110 dnl OVS_SPARSE_EXTRA_INCLUDES
1112 dnl The cgcc script from "sparse" does not search gcc's default
1113 dnl search path. Get the default search path from GCC and pass
1115 AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1116 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1117 [`$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 ' ' `] ))
1119 dnl OVS_ENABLE_SPARSE
1120 AC_DEFUN([OVS_ENABLE_SPARSE],
1121 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
1122 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
1125 AC_CONFIG_COMMANDS_PRE(
1126 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1130 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1131 [], [enable_sparse=no])
1132 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
1134 dnl OVS_CTAGS_IDENTIFIERS
1136 dnl ctags ignores symbols with extras identifiers. This builds a list of
1137 dnl specially handled identifiers to be ignored.
1138 AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1139 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
1140 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
1142 dnl OVS_PTHREAD_SET_NAME
1144 dnl This checks for three known variants of pthreads functions for setting
1145 dnl the name of the current thread:
1147 dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1148 dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1149 dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1151 dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1152 dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1155 dnl This macro defines:
1157 dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1158 dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1159 dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1160 AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1161 [AC_CHECK_FUNCS([pthread_set_name_np])
1162 if test $ac_cv_func_pthread_set_name_np != yes; then
1164 [for pthread_setname_np() variant],
1165 [ovs_cv_pthread_setname_np],
1167 [AC_LANG_PROGRAM([#include <pthread.h>
1168 ], [pthread_setname_np(pthread_self(), "name");])],
1169 [ovs_cv_pthread_setname_np=glibc],
1171 [AC_LANG_PROGRAM([#include <pthread.h>
1172 ], [pthread_setname_np(pthread_self(), "%s", "name");])],
1173 [ovs_cv_pthread_setname_np=netbsd],
1174 [ovs_cv_pthread_setname_np=none])])])
1175 case $ovs_cv_pthread_setname_np in # (
1178 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1179 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1183 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1184 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1189 dnl OVS_CHECK_LINUX_HOST.
1191 dnl Checks whether we're building for a Linux host, based on the presence of
1192 dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1193 dnl LINUX based on the result.
1194 AC_DEFUN([OVS_CHECK_LINUX_HOST],
1196 [whether __linux__ is defined],
1199 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1200 [ovs_cv_linux=true],
1201 [ovs_cv_linux=false])])
1202 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])