From 0b91111fb1a164fedbb68a9263afafd10ffa6ec3 Mon Sep 17 00:00:00 2001 From: Loic Poulain Date: Thu, 18 Jun 2020 11:17:42 +0200 Subject: [PATCH] mac80211: Do not report beacon loss if beacon filtering enabled mac80211.h says: Beacon filter support is advertised with the IEEE80211_VIF_BEACON_FILTER interface capability. The driver needs to enable beacon filter support whenever power save is enabled, that is IEEE80211_CONF_PS is set. When power save is enabled, the stack will not check for beacon loss and the driver needs to notify about loss of beacons with ieee80211_beacon_loss(). Some controllers may want to dynamically enable the beacon filter capabilities on power save entry (CONF_PS) and disable it on exit. This is the case for the wcn36xx driver which only supports beacon filtering in PS mode (no CONNECTION_MONITOR support). When the mac80211 beacon monitor timer expires, the beacon filter flag must be checked again in case it as been changed in between (e.g. vif moved to PS mode). Signed-off-by: Loic Poulain Link: https://lore.kernel.org/r/1592471863-31402-1-git-send-email-loic.poulain@linaro.org Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 8b7ca8ddfe20..ac870309b911 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4563,6 +4563,9 @@ static void ieee80211_sta_bcn_mon_timer(struct timer_list *t) if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) return; + if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) + return; + sdata->u.mgd.connection_loss = false; ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.beacon_connection_loss_work);