xfrm: use gre key as flow upper protocol info
The GRE Key field is intended to be used for identifying an individual
traffic flow within a tunnel. It is useful to be able to have XFRM
policy selector matches to have different policies for different
GRE tunnels.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index bcfb6b2..54b2832 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -805,6 +805,9 @@
case IPPROTO_MH:
port = htons(fl->fl_mh_type);
break;
+ case IPPROTO_GRE:
+ port = htonl(fl->fl_gre_key) >> 16;
+ break;
default:
port = 0; /*XXX*/
}
@@ -826,6 +829,9 @@
case IPPROTO_ICMPV6:
port = htons(fl->fl_icmp_code);
break;
+ case IPPROTO_GRE:
+ port = htonl(fl->fl_gre_key) & 0xffff;
+ break;
default:
port = 0; /*XXX*/
}