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authorDavid S. Miller <davem@davemloft.net>2015-06-24 02:58:51 -0700
committerDavid S. Miller <davem@davemloft.net>2015-06-24 02:58:51 -0700
commit3a07bd6fead4f00f67b1bf5f551e686661c4f52c (patch)
treef8b8f257d928a9ae1aeb3fdbe748f03f1012f02e /net/mac80211/key.c
parent204621551b2a0060a013b92f7add4d5c452fa7cb (diff)
parentf1590670ce069eefeb93916391a67643e6ad1630 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: drivers/net/ethernet/mellanox/mlx4/main.c net/packet/af_packet.c Both conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/key.c')
-rw-r--r--net/mac80211/key.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 8abc31ebcf61..b22df3a79a41 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -66,12 +66,15 @@ update_vlan_tailroom_need_count(struct ieee80211_sub_if_data *sdata, int delta)
if (sdata->vif.type != NL80211_IFTYPE_AP)
return;
- mutex_lock(&sdata->local->mtx);
+ /* crypto_tx_tailroom_needed_cnt is protected by this */
+ assert_key_lock(sdata->local);
+
+ rcu_read_lock();
- list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
+ list_for_each_entry_rcu(vlan, &sdata->u.ap.vlans, u.vlan.list)
vlan->crypto_tx_tailroom_needed_cnt += delta;
- mutex_unlock(&sdata->local->mtx);
+ rcu_read_unlock();
}
static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
@@ -95,6 +98,8 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
* http://mid.gmane.org/1308590980.4322.19.camel@jlt3.sipsolutions.net
*/
+ assert_key_lock(sdata->local);
+
update_vlan_tailroom_need_count(sdata, 1);
if (!sdata->crypto_tx_tailroom_needed_cnt++) {
@@ -109,6 +114,8 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata,
int delta)
{
+ assert_key_lock(sdata->local);
+
WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt < delta);
update_vlan_tailroom_need_count(sdata, -delta);