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authorJohannes Berg <johannes.berg@intel.com>2013-03-06 23:09:11 +0100
committerJohannes Berg <johannes.berg@intel.com>2013-03-11 15:16:42 +0200
commit6d10e46be5ac1d0ae787babd3dafd52b30686db5 (patch)
tree5377578eb94c2329d944ebf6ec657e8df5006e02 /net/mac80211/sta_info.c
parent3b8d9c290364c86fc9f4baff7c82264a96f706d6 (diff)
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mac80211: batch key free synchronize_net()
Instead of calling synchronize_net() for every key on an interface or when a station is removed, do it only once for all keys in both of these cases. As a side-effect, removing station keys now always calls synchronize_net() even if there are no keys, which fixes an issue with station removal happening in the driver while the station could still be used for TX. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/sta_info.c')
-rw-r--r--net/mac80211/sta_info.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 2961f3d..11216bc 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -783,7 +783,7 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
{
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
- int ret, i;
+ int ret;
might_sleep();
@@ -810,14 +810,8 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
list_del_rcu(&sta->list);
- mutex_lock(&local->key_mtx);
- for (i = 0; i < NUM_DEFAULT_KEYS; i++)
- ieee80211_key_free(key_mtx_dereference(local, sta->gtk[i]),
- true);
- if (sta->ptk)
- ieee80211_key_free(key_mtx_dereference(local, sta->ptk),
- true);
- mutex_unlock(&local->key_mtx);
+ /* this always calls synchronize_net() */
+ ieee80211_free_sta_keys(local, sta);
sta->dead = true;