wifi: mt76: connac: use peer address for station BMC entry

Set peer address and aid for the BMC wtbl of station interface. For some
functions such as parsing MU_EDCA parameters from beacon, firmware will
need the peer address to do correct parsing.
Without this patch, MU uplink traffic would get suffered.
Reported-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

@@ -392,7 +392,14 @@ void mt76_connac_mcu_sta_basic_tlv(struct mt76_dev *dev, struct sk_buff *skb,
 
 	if (!sta) {
 		basic->conn_type = cpu_to_le32(CONNECTION_INFRA_BC);
-		eth_broadcast_addr(basic->peer_addr);
+
+		if (vif->type == NL80211_IFTYPE_STATION &&
+		    !is_zero_ether_addr(vif->bss_conf.bssid)) {
+			memcpy(basic->peer_addr, vif->bss_conf.bssid, ETH_ALEN);
+			basic->aid = cpu_to_le16(vif->cfg.aid);
+		} else {
+			eth_broadcast_addr(basic->peer_addr);
+		}
 		return;
 	}
 

drivers/net/wireless/mediatek/mt76/mt7996/main.c

@@ -238,7 +238,11 @@ static int mt7996_add_interface(struct ieee80211_hw *hw,
 	mt7996_init_bitrate_mask(vif);
 
 	mt7996_mcu_add_bss_info(phy, vif, true);
-	mt7996_mcu_add_sta(dev, vif, NULL, true);
+	/* defer the first STA_REC of BMC entry to BSS_CHANGED_BSSID for STA
+	 * interface, since firmware only records BSSID when the entry is new
+	 */
+	if (vif->type != NL80211_IFTYPE_STATION)
+		mt7996_mcu_add_sta(dev, vif, NULL, true, true);
 	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
 
 out:
@@ -256,7 +260,7 @@ static void mt7996_remove_interface(struct ieee80211_hw *hw,
 	struct mt7996_phy *phy = mt7996_hw_phy(hw);
 	int idx = msta->wcid.idx;
 
-	mt7996_mcu_add_sta(dev, vif, NULL, false);
+	mt7996_mcu_add_sta(dev, vif, NULL, false, false);
 	mt7996_mcu_add_bss_info(phy, vif, false);
 
 	if (vif == phy->monitor_vif)
@@ -599,7 +603,8 @@ static void mt7996_bss_info_changed(struct ieee80211_hw *hw,
 	    (changed & BSS_CHANGED_ASSOC && vif->cfg.assoc) ||
 	    (changed & BSS_CHANGED_BEACON_ENABLED && info->enable_beacon)) {
 		mt7996_mcu_add_bss_info(phy, vif, true);
-		mt7996_mcu_add_sta(dev, vif, NULL, true);
+		mt7996_mcu_add_sta(dev, vif, NULL, true,
+				   !!(changed & BSS_CHANGED_BSSID));
 	}
 
 	if (changed & BSS_CHANGED_ERP_CTS_PROT)
@@ -688,7 +693,7 @@ int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	mt7996_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 
-	ret = mt7996_mcu_add_sta(dev, vif, sta, true);
+	ret = mt7996_mcu_add_sta(dev, vif, sta, true, true);
 	if (ret)
 		return ret;
 
@@ -702,7 +707,7 @@ void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
 	int i;
 
-	mt7996_mcu_add_sta(dev, vif, sta, false);
+	mt7996_mcu_add_sta(dev, vif, sta, false, false);
 
 	mt7996_mac_wtbl_update(dev, msta->wcid.idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);

drivers/net/wireless/mediatek/mt76/mt7996/mcu.c

@@ -2133,7 +2133,7 @@ mt7996_mcu_add_group(struct mt7996_dev *dev, struct ieee80211_vif *vif,
 }
 
 int mt7996_mcu_add_sta(struct mt7996_dev *dev, struct ieee80211_vif *vif,
-		       struct ieee80211_sta *sta, bool enable)
+		       struct ieee80211_sta *sta, bool enable, bool newly)
 {
 	struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
 	struct mt7996_sta *msta;
@@ -2149,8 +2149,8 @@ int mt7996_mcu_add_sta(struct mt7996_dev *dev, struct ieee80211_vif *vif,
 		return PTR_ERR(skb);
 
 	/* starec basic */
-	mt76_connac_mcu_sta_basic_tlv(&dev->mt76, skb, vif, sta, enable,
-				      !rcu_access_pointer(dev->mt76.wcid[msta->wcid.idx]));
+	mt76_connac_mcu_sta_basic_tlv(&dev->mt76, skb, vif, sta, enable, newly);
+
 	if (!enable)
 		goto out;
 

drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h

@@ -451,7 +451,7 @@ int mt7996_mcu_add_dev_info(struct mt7996_phy *phy,
 int mt7996_mcu_add_bss_info(struct mt7996_phy *phy,
 			    struct ieee80211_vif *vif, int enable);
 int mt7996_mcu_add_sta(struct mt7996_dev *dev, struct ieee80211_vif *vif,
-		       struct ieee80211_sta *sta, bool enable);
+		       struct ieee80211_sta *sta, bool enable, bool newly);
 int mt7996_mcu_add_tx_ba(struct mt7996_dev *dev,
 			 struct ieee80211_ampdu_params *params,
 			 bool add);