session: add rule tags

Change-Id: Id5ebb410f509ac4c83d60e48efd54e00035e5ce6
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/session_lookup.h b/src/vnet/session/session_lookup.h
index fa89727..246ab52 100644
--- a/src/vnet/session/session_lookup.h
+++ b/src/vnet/session/session_lookup.h
@@ -113,6 +113,10 @@
    * Rule scope flag.
    */
   u8 scope;
+  /**
+   * Transport protocol for the rule
+   */
+  u8 transport_proto;
 } session_rule_add_del_args_t;
 
 clib_error_t *vnet_session_rule_add_del (session_rule_add_del_args_t * args);