faq: Start an OVN FAQ by giving a rationale for how it uses tunnels.

[mirror_ovs.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 16a57a341b7ddc21bebad201701ec2f71d7e0559..60186d33de888033c3eb93826025d0bf7ab6f22b 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -151,10 +151,10 @@ AC_DEFUN([OVS_CHECK_LINUX], [
     AC_MSG_RESULT([$kversion])
 
     if test "$version" -ge 4; then
-       if test "$version" = 4 && test "$patchlevel" -le 13; then
+       if test "$version" = 4 && test "$patchlevel" -le 15; then
           : # Linux 4.x
        else
-          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.13.x is not supported (please refer to the FAQ for advice)])
+          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.15.x is not supported (please refer to the FAQ for advice)])
        fi
     elif test "$version" = 3 && test "$patchlevel" -ge 10; then
        : # Linux 3.x
@@ -178,10 +178,10 @@ dnl Configure Linux tc compat.
 AC_DEFUN([OVS_CHECK_LINUX_TC], [
   AC_COMPILE_IFELSE([
     AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
-        int x = TCA_FLOWER_KEY_IP_TTL_MASK;
+        int x = TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST;
     ])],
-    [AC_DEFINE([HAVE_TCA_FLOWER_KEY_IP_TTL_MASK], [1],
-               [Define to 1 if TCA_FLOWER_KEY_IP_TTL_MASK is avaiable.])])
+    [AC_DEFINE([HAVE_TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST], [1],
+               [Define to 1 if TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST is avaiable.])])
 
   AC_COMPILE_IFELSE([
     AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
@@ -533,6 +533,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
                         [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
                                          [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])
 
+  OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
+                  [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
   OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
                   [OVS_DEFINE([MPLS_HEADER_IS_L3])])
   OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
@@ -543,6 +545,7 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
+  OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
   OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
@@ -793,6 +796,27 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
                         [list],
                         [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
+  OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
+                  [IP_CT_UNTRACKED])
+  OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
+                        [netdev_master_upper_dev_link], [extack],
+                        [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
+  OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
+                  [__LINUX_COMPILER_TYPES_H],
+                  [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
+  OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
+                  [ktime_get_ts64],
+                  [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
+  OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
+                  [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
+                  [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
+  OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
+                  [ktime_get_ns],
+                  [OVS_DEFINE([HAVE_KTIME_GET_NS])])
+  OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
+                  frag_percpu_counter_batch[],
+                  [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
+
 
   if cmp -s datapath/linux/kcompat.h.new \
             datapath/linux/kcompat.h >/dev/null 2>&1; then