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Commit 45ceeee8 authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: add comment for rx_path_lock 



Add a comment explaining how the RX path lock is used.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 4cc0dba9

net/mac80211/rx.c

+6 −0
Original line number Diff line number Diff line
@@ -3123,6 +3123,12 @@ static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx, 
			goto rxh_next;  \

	} while (0);



	/* Lock here to avoid hitting all of the data used in the RX

	 * path (e.g. key data, station data, ...) concurrently when

	 * a frame is released from the reorder buffer due to timeout

	 * from the timer, potentially concurrently with RX from the

	 * driver.

	 */

	spin_lock_bh(&rx->local->rx_path_lock);



	while ((skb = __skb_dequeue(frames))) {