From 499fe9a419d43410be576bcc825658997b6ce822 Mon Sep 17 00:00:00 2001 From: Daniel Halperin Date: Thu, 24 Mar 2011 16:01:48 -0700 Subject: [PATCH] mac80211: fix aggregation frame release during timeout Suppose the aggregation reorder buffer looks like this: x-T-R1-y-R2, where x and y are frames that have not been received, T is a received frame that has timed out, and R1,R2 are received frames that have not yet timed out. The proper behavior in this scenario is to move the window past x (skipping it), release T and R1, and leave the window at y until y is received or R2 times out. As written, this code will instead leave the window at R1, because it has not yet timed out. Fix this by exiting the reorder loop only when the frame that has not timed out AND there are skipped frames earlier in the current valid window. Signed-off-by: Daniel Halperin Signed-off-by: John W. Linville --- net/mac80211/rx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 5c1930ba8ebe..aa5cc37b4921 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -612,7 +612,8 @@ static void ieee80211_sta_reorder_release(struct ieee80211_hw *hw, skipped++; continue; } - if (!time_after(jiffies, tid_agg_rx->reorder_time[j] + + if (skipped && + !time_after(jiffies, tid_agg_rx->reorder_time[j] + HT_RX_REORDER_BUF_TIMEOUT)) goto set_release_timer;