Commit 152c477a authored Oct 21, 2011 by Johannes Berg Committed by John W. Linville Nov 08, 2011

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>

parent b83db862

net/mac80211/rx.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;