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 <loic.poulain@xxxxxxxxxx> --- net/mac80211/mlme.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 16d75da..1f7dfaa 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4494,6 +4494,9 @@ 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); -- 2.7.4
