tipc: move code for deleting links from bearer.c to link.c

We break out the code for deleting attached links in the
function bearer_disable(), and define a new function named
tipc_link_delete_list() to do this job.

This commit incurs no functional changes, but makes the code of
function bearer_disable() cleaner. It is also a preparation
for a more important change to the bearer code, in a subsequent
commit in this series.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/bearer.c

@@ -366,16 +366,12 @@ static int tipc_reset_bearer(struct tipc_bearer *b_ptr)
  */
 static void bearer_disable(struct tipc_bearer *b_ptr)
 {
-	struct tipc_link *l_ptr;
-	struct tipc_link *temp_l_ptr;
 	struct tipc_link_req *temp_req;
 
 	pr_info("Disabling bearer <%s>\n", b_ptr->name);
 	spin_lock_bh(&b_ptr->lock);
 	b_ptr->media->disable_media(b_ptr);
-	list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
-		tipc_link_delete(l_ptr);
-	}
+	tipc_link_delete_list(b_ptr);
 	temp_req = b_ptr->link_req;
 	b_ptr->link_req = NULL;
 	spin_unlock_bh(&b_ptr->lock);

net/tipc/link.c

@@ -313,6 +313,15 @@ void tipc_link_delete(struct tipc_link *l_ptr)
 	kfree(l_ptr);
 }
 
+void tipc_link_delete_list(struct tipc_bearer *b_ptr)
+{
+	struct tipc_link *l_ptr;
+	struct tipc_link *temp_l_ptr;
+
+	list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
+		tipc_link_delete(l_ptr);
+	}
+}
 
 /**
  * link_schedule_port - schedule port for deferred sending

net/tipc/link.h

@@ -219,6 +219,7 @@ void tipc_link_delete(struct tipc_link *l_ptr);
 void tipc_link_failover_send_queue(struct tipc_link *l_ptr);
 void tipc_link_dup_send_queue(struct tipc_link *l_ptr,
 			      struct tipc_link *dest);
+void tipc_link_delete_list(struct tipc_bearer *b_ptr);
 void tipc_link_reset_fragments(struct tipc_link *l_ptr);
 int tipc_link_is_up(struct tipc_link *l_ptr);
 int tipc_link_is_active(struct tipc_link *l_ptr);