tipc: Minor optimizations to received message processing

This patch enhances TIPC's handler for incoming messages in two
ways:
- the trivial, single-use routine for processing non-sequenced
  messages has been merged into the main handler
- the interface that received a message is now identified without
  having to access and/or modify the associated sk_buff

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/discover.h b/net/tipc/discover.h
index 9fd7587..c36eaeb 100644
--- a/net/tipc/discover.h
+++ b/net/tipc/discover.h
@@ -48,7 +48,7 @@
 void tipc_disc_update_link_req(struct link_req *req);
 void tipc_disc_stop_link_req(struct link_req *req);
 
-void tipc_disc_recv_msg(struct sk_buff *buf);
+void tipc_disc_recv_msg(struct sk_buff *buf, struct bearer *b_ptr);
 
 void tipc_disc_link_event(u32 addr, char *name, int up);
 #if 0