diff options
| author | Marek Lindner <lindner_marek@yahoo.de> | 2010-12-12 21:57:10 +0000 |
|---|---|---|
| committer | Marek Lindner <lindner_marek@yahoo.de> | 2011-03-05 12:49:52 +0100 |
| commit | a8e7f4bc38c4a90ee308cd7f1f8604f71db59d05 (patch) | |
| tree | eaad8069534691aaa06b316ce42fbeb81f380b20 /net/batman-adv/originator.c | |
| parent | 8d689218568174955129d0f0e9e4370a391b3609 (diff) | |
batman-adv: protect neighbor nodes with reference counters
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/originator.c')
| -rw-r--r-- | net/batman-adv/originator.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 54863c9385de..b1b1773afa0b 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -59,9 +59,18 @@ err: return 0; } -struct neigh_node * -create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, - uint8_t *neigh, struct batman_if *if_incoming) +void neigh_node_free_ref(struct kref *refcount) +{ + struct neigh_node *neigh_node; + + neigh_node = container_of(refcount, struct neigh_node, refcount); + kfree(neigh_node); +} + +struct neigh_node *create_neighbor(struct orig_node *orig_node, + struct orig_node *orig_neigh_node, + uint8_t *neigh, + struct batman_if *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *neigh_node; @@ -78,6 +87,7 @@ create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, memcpy(neigh_node->addr, neigh, ETH_ALEN); neigh_node->orig_node = orig_neigh_node; neigh_node->if_incoming = if_incoming; + kref_init(&neigh_node->refcount); list_add_tail(&neigh_node->list, &orig_node->neigh_list); return neigh_node; @@ -95,7 +105,7 @@ static void free_orig_node(void *data, void *arg) neigh_node = list_entry(list_pos, struct neigh_node, list); list_del(list_pos); - kfree(neigh_node); + kref_put(&neigh_node->refcount, neigh_node_free_ref); } frag_list_free(&orig_node->frag_list); @@ -216,7 +226,7 @@ static bool purge_orig_neighbors(struct bat_priv *bat_priv, neigh_purged = true; list_del(list_pos); - kfree(neigh_node); + kref_put(&neigh_node->refcount, neigh_node_free_ref); } else { if ((!*best_neigh_node) || (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) |