compat: Detect and use upstream ip_fragment().

[cascardo/ovs.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index e99420e..93fab5d 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -351,6 +351,9 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_do_fragment])
   OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_is_fragment])
   OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
+
+  OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
+                  [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
   OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
                   [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
   OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],