tipc: Minor optimization to rejection of connection-based messages

Modifies message rejection logic so that TIPC doesn't attempt to
send a FIN message to the rejecting port if it is known in advance
that there is no such message because the rejecting port doesn't exist.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/tipc/port.c b/net/tipc/port.c
index d91efc69e6f9..ba3268b8da42 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -400,15 +400,16 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
 
         /* send self-abort message when rejecting on a connected port */
         if (msg_connected(msg)) {
-                struct sk_buff *abuf = NULL;
                 struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg));
 
                 if (p_ptr) {
+                        struct sk_buff *abuf = NULL;
+
                         if (p_ptr->connected)
                                 abuf = port_build_self_abort_msg(p_ptr, err);
                         tipc_port_unlock(p_ptr);
+                        tipc_net_route_msg(abuf);
                 }
-                tipc_net_route_msg(abuf);
         }
 
         /* send returned message & dispose of rejected message */