From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 13 Nov 2018 19:32:13 +0000 (+0100)
Subject: mac80211: ignore tx status for PS stations in ieee80211_tx_status_ext
X-Git-Tag: v4.4.167~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=00512a2e8e64d20f49b6f1b0e2d0cbf49cdb3039;p=thirdparty%2Fkernel%2Fstable.git

mac80211: ignore tx status for PS stations in ieee80211_tx_status_ext

commit a317e65face482371de30246b6494feb093ff7f9 upstream.

Make it behave like regular ieee80211_tx_status calls, except for the lack of
filtered frame processing.
This fixes spurious low-ack triggered disconnections with powersave clients
connected to an AP.

Fixes: f027c2aca0cf4 ("mac80211: add ieee80211_tx_status_noskb")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 2731cf5bf0524..d221300e59e5b 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -648,6 +648,8 @@ void ieee80211_tx_status_noskb(struct ieee80211_hw *hw,
 			/* Track when last TDLS packet was ACKed */
 			if (test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH))
 				sta->status_stats.last_tdls_pkt_time = jiffies;
+		} else if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
+			return;
 		} else {
 			ieee80211_lost_packet(sta, info);
 		}