datapath: compat: Configure check GRE DEMUX.

[sliver-openvswitch.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 99b4054..7078654 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -274,6 +274,7 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
 
   OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
+  OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])