openwrtv4/package/mac80211/patches/553-ath9k_no_node_rssi.patch

--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -271,7 +271,6 @@ struct ath_node {
 	struct ath_atx_ac ac[WME_NUM_AC];
 	u16 maxampdu;
 	u8 mpdudensity;
-	int last_rssi;
 };
 
 #define AGGR_CLEANUP         BIT(1)
@@ -666,6 +665,7 @@ struct ath_wiphy {
 	bool idle;
 	int chan_idx;
 	int chan_is_ht;
+	int last_rssi;
 };
 
 void ath9k_tasklet(unsigned long data);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -553,7 +553,6 @@ static void ath_node_attach(struct ath_s
 		an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 				     sta->ht_cap.ampdu_factor);
 		an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
-		an->last_rssi = ATH_RSSI_DUMMY_MARKER;
 	}
 }
 
@@ -822,9 +821,11 @@ static u32 ath_get_extchanmode(struct at
 }
 
 static void ath9k_bss_assoc_info(struct ath_softc *sc,
+				 struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 struct ieee80211_bss_conf *bss_conf)
 {
+	struct ath_wiphy *aphy = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 
@@ -848,6 +849,7 @@ static void ath9k_bss_assoc_info(struct 
 		ath_beacon_config(sc, vif);
 
 		/* Reset rssi stats */
+		aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
 		sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
 
 		sc->sc_flags |= SC_OP_ANI_RUN;
@@ -1969,7 +1971,7 @@ static void ath9k_bss_info_changed(struc
 	if (changed & BSS_CHANGED_ASSOC) {
 		ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
 			bss_conf->assoc);
-		ath9k_bss_assoc_info(sc, vif, bss_conf);
+		ath9k_bss_assoc_info(sc, hw, vif, bss_conf);
 	}
 
 	mutex_unlock(&sc->mutex);
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -960,36 +960,23 @@ static void ath9k_process_rssi(struct at
 			       struct ieee80211_hdr *hdr,
 			       struct ath_rx_status *rx_stats)
 {
+	struct ath_wiphy *aphy = hw->priv;
 	struct ath_hw *ah = common->ah;
-	struct ieee80211_sta *sta;
-	struct ath_node *an;
-	int last_rssi = ATH_RSSI_DUMMY_MARKER;
+	int last_rssi;
 	__le16 fc;
 
-	fc = hdr->frame_control;
+	if (ah->opmode != NL80211_IFTYPE_STATION)
+		return;
 
-	rcu_read_lock();
-	/*
-	 * XXX: use ieee80211_find_sta! This requires quite a bit of work
-	 * under the current ath9k virtual wiphy implementation as we have
-	 * no way of tying a vif to wiphy. Typically vifs are attached to
-	 * at least one sdata of a wiphy on mac80211 but with ath9k virtual
-	 * wiphy you'd have to iterate over every wiphy and each sdata.
-	 */
-	if (is_multicast_ether_addr(hdr->addr1))
-		sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, NULL);
-	else
-		sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, hdr->addr1);
+	fc = hdr->frame_control;
+	if (!ieee80211_is_beacon(fc) ||
+	    compare_ether_addr(hdr->addr3, common->curbssid))
+		return;
 
-	if (sta) {
-		an = (struct ath_node *) sta->drv_priv;
-		if (rx_stats->rs_rssi != ATH9K_RSSI_BAD &&
-		   !rx_stats->rs_moreaggr)
-			ATH_RSSI_LPF(an->last_rssi, rx_stats->rs_rssi);
-		last_rssi = an->last_rssi;
-	}
-	rcu_read_unlock();
+	if (rx_stats->rs_rssi != ATH9K_RSSI_BAD && !rx_stats->rs_moreaggr)
+		ATH_RSSI_LPF(aphy->last_rssi, rx_stats->rs_rssi);
 
+	last_rssi = aphy->last_rssi;
 	if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
 		rx_stats->rs_rssi = ATH_EP_RND(last_rssi,
 					      ATH_RSSI_EP_MULTIPLIER);
@@ -997,8 +984,7 @@ static void ath9k_process_rssi(struct at
 		rx_stats->rs_rssi = 0;
 
 	/* Update Beacon RSSI, this is used by ANI. */
-	if (ieee80211_is_beacon(fc))
-		ah->stats.avgbrssi = rx_stats->rs_rssi;
+	ah->stats.avgbrssi = rx_stats->rs_rssi;
 }
 
 /*
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -729,6 +729,7 @@ int ath9k_init_device(u16 devid, struct 
 		    const struct ath_bus_ops *bus_ops)
 {
 	struct ieee80211_hw *hw = sc->hw;
+	struct ath_wiphy *aphy = hw->priv;
 	struct ath_common *common;
 	struct ath_hw *ah;
 	int error = 0;
@@ -781,6 +782,7 @@ int ath9k_init_device(u16 devid, struct 
 	INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work);
 	INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work);
 	sc->wiphy_scheduler_int = msecs_to_jiffies(500);
+	aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
 
 	ath_init_leds(sc);
 	ath_start_rfkill_poll(sc);
--- a/drivers/net/wireless/ath/ath9k/virtual.c
+++ b/drivers/net/wireless/ath/ath9k/virtual.c
@@ -107,6 +107,7 @@ int ath9k_wiphy_add(struct ath_softc *sc
 	aphy->sc = sc;
 	aphy->hw = hw;
 	sc->sec_wiphy[i] = aphy;
+	aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
 	spin_unlock_bh(&sc->wiphy_lock);
 
 	memcpy(addr, common->macaddr, ETH_ALEN);