mac80211: remove disconnected APs from BSS table

In some cases, after a sudden AP disappearing and reconnection to another AP in the same ESS, user space gets the old AP in scan results (cached). User space may decide to roam to that old AP which will cause a disconnection and longer recovery. Remove APs that are probably out of range from BSS table. Signed-off-by: David Spinadel <[email protected]> Signed-off-by: Luca Coelho <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
maraz · May 12, 2016 · 20eb7ea · 20eb7ea
1 parent 866daf6
commit 20eb7ea
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
@@ -2399,6 +2399,11 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
 		return;
 	}
 
+	/* AP is probably out of range (or not reachable for another reason) so
+	 * remove the bss struct for that AP.
+	 */
+	cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
+
 	ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
 			       WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
 			       true, frame_buf);