--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -119,6 +119,27 @@ struct sta_info *sta_info_get(struct iee
 	return sta;
 }
 
+/*
+ * Get sta info either from the specified interface
+ * or from one of its vlans
+ */
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+				  const u8 *addr)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct sta_info *sta;
+
+	sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
+	while (sta) {
+		if ((sta->sdata == sdata ||
+		     sta->sdata->bss == sdata->bss) &&
+		    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+			break;
+		sta = rcu_dereference(sta->hnext);
+	}
+	return sta;
+}
+
 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
 				     int idx)
 {
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -408,6 +408,9 @@ static inline u32 get_sta_flags(struct s
 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
 			      const u8 *addr);
 
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+				  const u8 *addr);
+
 static inline
 void for_each_sta_info_type_check(struct ieee80211_local *local,
 				  const u8 *addr,
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -148,7 +148,7 @@ static int ieee80211_add_key(struct wiph
 	rcu_read_lock();
 
 	if (mac_addr) {
-		sta = sta_info_get(sdata, mac_addr);
+		sta = sta_info_get_bss(sdata, mac_addr);
 		if (!sta) {
 			ieee80211_key_free(key);
 			err = -ENOENT;
@@ -179,7 +179,7 @@ static int ieee80211_del_key(struct wiph
 	if (mac_addr) {
 		ret = -ENOENT;
 
-		sta = sta_info_get(sdata, mac_addr);
+		sta = sta_info_get_bss(sdata, mac_addr);
 		if (!sta)
 			goto out_unlock;
 
@@ -226,7 +226,7 @@ static int ieee80211_get_key(struct wiph
 	rcu_read_lock();
 
 	if (mac_addr) {
-		sta = sta_info_get(sdata, mac_addr);
+		sta = sta_info_get_bss(sdata, mac_addr);
 		if (!sta)
 			goto out;
 
@@ -419,7 +419,7 @@ static int ieee80211_get_station(struct 
 
 	rcu_read_lock();
 
-	sta = sta_info_get(sdata, mac);
+	sta = sta_info_get_bss(sdata, mac);
 	if (sta) {
 		ret = 0;
 		sta_set_sinfo(sta, sinfo);
@@ -775,7 +775,7 @@ static int ieee80211_del_station(struct 
 	if (mac) {
 		rcu_read_lock();
 
-		sta = sta_info_get(sdata, mac);
+		sta = sta_info_get_bss(sdata, mac);
 		if (!sta) {
 			rcu_read_unlock();
 			return -ENOENT;
@@ -803,7 +803,7 @@ static int ieee80211_change_station(stru
 
 	rcu_read_lock();
 
-	sta = sta_info_get(sdata, mac);
+	sta = sta_info_get_bss(sdata, mac);
 	if (!sta) {
 		rcu_read_unlock();
 		return -ENOENT;