From 8a8656fa5bbbc8568348d95184d374edb03a48b7 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 29 Sep 2011 16:04:31 +0200 Subject: [PATCH] mac80211: clear more-data bit on filtered frames It doesn't seem likely, but maybe possible, that the more-data bit needs to be recomputed due to changes in the queued frames. Clear it for filtered frames to ensure that we never send it incorrectly. It'll be set again as necessary when we retransmit this frame. The more likely case is maybe where the station woke up after the filtered frame in which case more-data should be clear when the frame is transmitted to the station since it is now awake. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/status.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/net/mac80211/status.c b/net/mac80211/status.c index c06857bbd573..94475eb51d28 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -65,6 +65,16 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, sta->tx_filtered_count++; + /* + * Clear more-data bit on filtered frames, it might be set + * but later frames might time out so it might have to be + * clear again ... It's all rather unlikely (this frame + * should time out first, right?) but let's not confuse + * peers unnecessarily. + */ + if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) + hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); + if (ieee80211_is_data_qos(hdr->frame_control)) { int tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;