tipc: more cleanup of tunnelling reception function

We simplify and slim down the code in function tipc_tunnel_rcv()
No impact on the users of this function.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tipc/link.c b/net/tipc/link.c
index f9f9068..3136788 100644 (file)
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -2180,9 +2180,10 @@ static int tipc_link_tunnel_rcv(struct tipc_node *n_ptr,
        struct sk_buff *tunnel_buf = *buf;
        struct tipc_link *dest_link;
        struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf);
-       u32 msg_typ = msg_type(tunnel_msg);
        u32 bearer_id = msg_bearer_id(tunnel_msg);
 
+       *buf = NULL;
+
        if (bearer_id >= MAX_BEARERS)
                goto exit;
 
@@ -2190,24 +2191,16 @@ static int tipc_link_tunnel_rcv(struct tipc_node *n_ptr,
        if (!dest_link)
                goto exit;
 
-       if (msg_typ == DUPLICATE_MSG) {
+       if (msg_type(tunnel_msg) == DUPLICATE_MSG)
                tipc_link_dup_rcv(dest_link, tunnel_buf);
-               goto exit;
-       }
-
-       if (msg_type(tunnel_msg) == ORIGINAL_MSG) {
+       else if (msg_type(tunnel_msg) == ORIGINAL_MSG)
                *buf = tipc_link_failover_rcv(dest_link, tunnel_buf);
+       else
+               pr_warn("%sunknown tunnel pkt received\n", link_co_err);
 
-               /* Do we have a buffer/buffer chain to return? */
-               if (*buf != NULL) {
-                       kfree_skb(tunnel_buf);
-                       return 1;
-               }
-       }
 exit:
-       *buf = NULL;
        kfree_skb(tunnel_buf);
-       return 0;
+       return *buf != NULL;
 }
 
 /*