commit a8e7f4bc38c4a90ee308cd7f1f8604f71db59d05
author Marek Lindner <lindner_marek@yahoo.de> Sun Dec 12 21:57:10 2010 +0000
committer Marek Lindner <lindner_marek@yahoo.de> Sat Mar 05 12:49:52 2011 +0100
tree eaad8069534691aaa06b316ce42fbeb81f380b20
parent 8d689218568174955129d0f0e9e4370a391b3609

batman-adv: protect neighbor nodes with reference counters

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

net/batman-adv/routing.c

diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 8274140..36351d3 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -89,6 +89,8 @@
 			 struct neigh_node *neigh_node,
 			 unsigned char *hna_buff, int hna_buff_len)
 {
+	struct neigh_node *neigh_node_tmp;
+
 	/* route deleted */
 	if ((orig_node->router) && (!neigh_node)) {
 
@@ -115,7 +117,12 @@
 			orig_node->router->addr);
 	}
 
+	if (neigh_node)
+		kref_get(&neigh_node->refcount);
+	neigh_node_tmp = orig_node->router;
 	orig_node->router = neigh_node;
+	if (neigh_node_tmp)
+		kref_put(&neigh_node_tmp->refcount, neigh_node_free_ref);
 }