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authorJohannes Berg <johannes.berg@intel.com>2011-10-21 10:22:22 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-11-08 15:54:13 -0500
commit152c477aa3eb8046b35aa7cde2782230064041d8 (patch)
treeb54ff13db4111d02210c1650d8c5f3ee53ca5a25 /net/mac80211
parentb83db862ffb871e3131e5d2160c741b288eea9aa (diff)
mac80211: exit cooked monitor RX early if there are none
If there are no cooked monitor interfaces, there's no point in building the radiotap RX header for the frame and iterating the interface list. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/rx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index b867bd55de7..c74e542a26b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2489,6 +2489,10 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
goto out_free_skb;
rx->flags |= IEEE80211_RX_CMNTR;
+ /* If there are no cooked monitor interfaces, just free the SKB */
+ if (!local->cooked_mntrs)
+ goto out_free_skb;
+
if (skb_headroom(skb) < sizeof(*rthdr) &&
pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC))
goto out_free_skb;