1 files changed, 15 insertions, 0 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index c05be09b9c6..209abb073df 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -909,6 +909,21 @@ static void ieee80211_associate(struct ieee80211_sub_if_data *sdata)
         mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
 }
 
+void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
+                             struct ieee80211_hdr *hdr)
+{
+        /*
+         * We can postpone the mgd.timer whenever receiving unicast frames
+         * from AP because we know that the connection is working both ways
+         * at that time. But multicast frames (and hence also beacons) must
+         * be ignored here, because we need to trigger the timer during
+         * data idle periods for sending the periodical probe request to
+         * the AP.
+         */
+        if (!is_multicast_ether_addr(hdr->addr1))
+                mod_timer(&sdata->u.mgd.timer,
+                          jiffies + IEEE80211_MONITORING_INTERVAL);
+}
 
 static void ieee80211_associated(struct ieee80211_sub_if_data *sdata)
 {