[PATCH 4.14 65/67] mac80211: ignore tx status for PS stations in ieee80211_tx_status_ext

Greg Kroah-Hartman
2018-12-11T15:53:41Z

From: Felix Fietkau <nbd@nbd.name>

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>

---
net/mac80211/status.c | 2 ++
1 file changed, 2 insertions(+)

--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -953,6 +953,8 @@ void ieee80211_tx_status_ext(struct ieee
/* 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);
}