tipc: Optimizations to link creation code

Enhances link creation code as follows:

1) Detects illegal attempts to add a requested link earlier in the
   link creation process. This prevents TIPC from wasting time
   initializing a link object it then throws away, and also eliminates
   the code needed to do the throwing away.

2) Passes in the node object associated with the requested link.
   This allows TIPC to eliminate a search to locate the node object,
   as well as code that attempted to create the node if it doesn't
   exist.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 580b50a79e43..caac5c93b7f7 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -169,7 +169,7 @@ void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr)
 
         /* Create a link endpoint for this bearer, if necessary */
         if (!link) {
-                link = tipc_link_create(b_ptr, orig, &media_addr);
+                link = tipc_link_create(n_ptr, b_ptr, &media_addr);
                 if (!link) {
                         tipc_node_unlock(n_ptr);
                         return;