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([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
[OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
[OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
- if test "$version" = 4 && test "$patchlevel" -le 2; then
+ dnl Conntrack support, and therefore, IP fragment handling backport, should
+ dnl only be enabled on kernels 3.10+. In future when OVS drops support for
+ dnl kernels older than 3.10, this macro could be removed from the codebase.
+ if test "$version" = 4; then
OVS_DEFINE([OVS_FRAGMENT_BACKPORT])
elif test "$version" = 3 && test "$patchlevel" -ge 10; then
OVS_DEFINE([OVS_FRAGMENT_BACKPORT])