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>
diff --git a/net/tipc/node.c b/net/tipc/node.c
index ca09b33..2d106ef 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -238,33 +238,11 @@
return tipc_node_active_links(n_ptr);
}
-struct tipc_node *tipc_node_attach_link(struct link *l_ptr)
+void tipc_node_attach_link(struct tipc_node *n_ptr, struct link *l_ptr)
{
- struct tipc_node *n_ptr = tipc_node_find(l_ptr->addr);
-
- if (!n_ptr)
- n_ptr = tipc_node_create(l_ptr->addr);
- if (n_ptr) {
- u32 bearer_id = l_ptr->b_ptr->identity;
- char addr_string[16];
-
- if (n_ptr->link_cnt >= 2) {
- err("Attempt to create third link to %s\n",
- tipc_addr_string_fill(addr_string, n_ptr->addr));
- return NULL;
- }
-
- if (!n_ptr->links[bearer_id]) {
- n_ptr->links[bearer_id] = l_ptr;
- atomic_inc(&tipc_num_links);
- n_ptr->link_cnt++;
- return n_ptr;
- }
- err("Attempt to establish second link on <%s> to %s\n",
- l_ptr->b_ptr->name,
- tipc_addr_string_fill(addr_string, l_ptr->addr));
- }
- return NULL;
+ n_ptr->links[l_ptr->b_ptr->identity] = l_ptr;
+ atomic_inc(&tipc_num_links);
+ n_ptr->link_cnt++;
}
void tipc_node_detach_link(struct tipc_node *n_ptr, struct link *l_ptr)