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| author | Marek Lindner <lindner_marek@yahoo.de> | 2011-01-19 20:01:40 +0000 |
|---|---|---|
| committer | Marek Lindner <lindner_marek@yahoo.de> | 2011-03-05 12:49:58 +0100 |
| commit | fb778ea173fcd58b8fc3d75c674f07fab187b55f (patch) | |
| tree | b14cfc99b7ca61ddcb49cc56c9a8e2822675debc /net/batman-adv/translation-table.c | |
| parent | a775eb847ae66211577d4fd2c46749b77c9993c9 (diff) | |
| download | blackbird-op-linux-fb778ea173fcd58b8fc3d75c674f07fab187b55f.tar.gz blackbird-op-linux-fb778ea173fcd58b8fc3d75c674f07fab187b55f.zip | |
batman-adv: protect each hash row with rcu locks
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/translation-table.c')
| -rw-r--r-- | net/batman-adv/translation-table.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 7fb6726ccbdd..b25e4b328dcb 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -60,10 +60,12 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr) int required_bytes; spin_lock_bh(&bat_priv->hna_lhash_lock); + rcu_read_lock(); hna_local_entry = ((struct hna_local_entry *)hash_find(bat_priv->hna_local_hash, compare_orig, choose_orig, addr)); + rcu_read_unlock(); spin_unlock_bh(&bat_priv->hna_lhash_lock); if (hna_local_entry) { @@ -116,9 +118,11 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr) /* remove address from global hash if present */ spin_lock_bh(&bat_priv->hna_ghash_lock); + rcu_read_lock(); hna_global_entry = ((struct hna_global_entry *) hash_find(bat_priv->hna_global_hash, compare_orig, choose_orig, addr)); + rcu_read_unlock(); if (hna_global_entry) _hna_global_del_orig(bat_priv, hna_global_entry, @@ -252,9 +256,11 @@ void hna_local_remove(struct bat_priv *bat_priv, spin_lock_bh(&bat_priv->hna_lhash_lock); + rcu_read_lock(); hna_local_entry = (struct hna_local_entry *) hash_find(bat_priv->hna_local_hash, compare_orig, choose_orig, addr); + rcu_read_unlock(); if (hna_local_entry) hna_local_del(bat_priv, hna_local_entry, message); @@ -334,9 +340,11 @@ void hna_global_add_orig(struct bat_priv *bat_priv, spin_lock_bh(&bat_priv->hna_ghash_lock); hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN); + rcu_read_lock(); hna_global_entry = (struct hna_global_entry *) hash_find(bat_priv->hna_global_hash, compare_orig, choose_orig, hna_ptr); + rcu_read_unlock(); if (!hna_global_entry) { spin_unlock_bh(&bat_priv->hna_ghash_lock); @@ -368,9 +376,11 @@ void hna_global_add_orig(struct bat_priv *bat_priv, spin_lock_bh(&bat_priv->hna_lhash_lock); hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN); + rcu_read_lock(); hna_local_entry = (struct hna_local_entry *) hash_find(bat_priv->hna_local_hash, compare_orig, choose_orig, hna_ptr); + rcu_read_unlock(); if (hna_local_entry) hna_local_del(bat_priv, hna_local_entry, @@ -483,9 +493,11 @@ void hna_global_del_orig(struct bat_priv *bat_priv, while ((hna_buff_count + 1) * ETH_ALEN <= orig_node->hna_buff_len) { hna_ptr = orig_node->hna_buff + (hna_buff_count * ETH_ALEN); + rcu_read_lock(); hna_global_entry = (struct hna_global_entry *) hash_find(bat_priv->hna_global_hash, compare_orig, choose_orig, hna_ptr); + rcu_read_unlock(); if ((hna_global_entry) && (hna_global_entry->orig_node == orig_node)) @@ -521,9 +533,11 @@ struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr) struct hna_global_entry *hna_global_entry; spin_lock_bh(&bat_priv->hna_ghash_lock); + rcu_read_lock(); hna_global_entry = (struct hna_global_entry *) hash_find(bat_priv->hna_global_hash, compare_orig, choose_orig, addr); + rcu_read_unlock(); spin_unlock_bh(&bat_priv->hna_ghash_lock); if (!hna_global_entry) |
