wifi: mt76: mt7996: use mac80211 .sta_state op

Allows adding stations before assoc, though they are not passed to the
firmware yet at that point.

Link: https://patch.msgid.link/20241230194202.95065-13-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -246,7 +246,7 @@ static int mt7996_add_interface(struct ieee80211_hw *hw,
 	 * 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);
+		mt7996_mcu_add_sta(dev, vif, NULL, CONN_STATE_PORT_SECURE, true);
 	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
 
 out:
@@ -264,7 +264,7 @@ 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, false);
+	mt7996_mcu_add_sta(dev, vif, NULL, CONN_STATE_DISCONNECT, false);
 	mt7996_mcu_add_bss_info(phy, vif, false);
 	mt7996_mcu_add_dev_info(phy, vif, false);
 
@@ -333,6 +333,9 @@ static int mt7996_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 		return -EOPNOTSUPP;
 
+	if (sta && !wcid->sta)
+		return -EOPNOTSUPP;
+
 	/* fall back to sw encryption for unsupported ciphers */
 	switch (key->cipher) {
 	case WLAN_CIPHER_SUITE_TKIP:
@@ -592,7 +595,7 @@ 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, CONN_STATE_PORT_SECURE,
 				   !!(changed & BSS_CHANGED_BSSID));
 	}
 
@@ -663,7 +666,7 @@ int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
 	struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
 	u8 band_idx = mvif->phy->mt76->band_idx;
-	int ret, idx;
+	int idx;
 
 	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7996_WTBL_STA);
 	if (idx < 0)
@@ -675,18 +678,53 @@ int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	msta->wcid.sta = 1;
 	msta->wcid.idx = idx;
 	msta->wcid.phy_idx = band_idx;
-	msta->wcid.tx_info |= MT_WCID_TX_INFO_SET;
 
 	ewma_avg_signal_init(&msta->avg_ack_signal);
 
 	mt7996_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
+	mt7996_mcu_add_sta(dev, vif, sta, CONN_STATE_DISCONNECT, true);
 
-	ret = mt7996_mcu_add_sta(dev, vif, sta, true, true);
-	if (ret)
-		return ret;
+	return 0;
+}
 
-	return mt7996_mcu_add_rate_ctrl(dev, vif, sta, false);
+int mt7996_mac_sta_event(struct mt76_dev *mdev, struct ieee80211_vif *vif,
+			 struct ieee80211_sta *sta, enum mt76_sta_event ev)
+{
+	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
+	int i, ret;
+
+	switch (ev) {
+	case MT76_STA_EVENT_ASSOC:
+		ret = mt7996_mcu_add_sta(dev, vif, sta, CONN_STATE_CONNECT, true);
+		if (ret)
+			return ret;
+
+		ret = mt7996_mcu_add_rate_ctrl(dev, vif, sta, false);
+		if (ret)
+			return ret;
+
+		msta->wcid.tx_info |= MT_WCID_TX_INFO_SET;
+		msta->wcid.sta = 1;
+
+		return 0;
+
+	case MT76_STA_EVENT_AUTHORIZE:
+		return mt7996_mcu_add_sta(dev, vif, sta, CONN_STATE_PORT_SECURE, false);
+
+	case MT76_STA_EVENT_DISASSOC:
+		for (i = 0; i < ARRAY_SIZE(msta->twt.flow); i++)
+			mt7996_mac_twt_teardown_flow(dev, msta, i);
+
+		mt7996_mcu_add_sta(dev, vif, sta, CONN_STATE_DISCONNECT, false);
+		msta->wcid.sta_disabled = 1;
+		msta->wcid.sta = 0;
+
+		return 0;
+	}
+
+	return 0;
 }
 
 void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
@@ -694,16 +732,10 @@ void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
 	struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
-	int i;
-
-	mt7996_mcu_add_sta(dev, vif, sta, false, false);
 
 	mt7996_mac_wtbl_update(dev, msta->wcid.idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 
-	for (i = 0; i < ARRAY_SIZE(msta->twt.flow); i++)
-		mt7996_mac_twt_teardown_flow(dev, msta, i);
-
 	spin_lock_bh(&mdev->sta_poll_lock);
 	if (!list_empty(&msta->wcid.poll_list))
 		list_del_init(&msta->wcid.poll_list);
@@ -808,22 +840,6 @@ mt7996_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	return ret;
 }
 
-static int
-mt7996_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-	       struct ieee80211_sta *sta)
-{
-	return mt76_sta_state(hw, vif, sta, IEEE80211_STA_NOTEXIST,
-			      IEEE80211_STA_NONE);
-}
-
-static int
-mt7996_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		  struct ieee80211_sta *sta)
-{
-	return mt76_sta_state(hw, vif, sta, IEEE80211_STA_NONE,
-			      IEEE80211_STA_NOTEXIST);
-}
-
 static int
 mt7996_get_stats(struct ieee80211_hw *hw,
 		 struct ieee80211_low_level_stats *stats)
@@ -1100,6 +1116,9 @@ static void mt7996_sta_set_4addr(struct ieee80211_hw *hw,
 	else
 		clear_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags);
 
+	if (!msta->wcid.sta)
+		return;
+
 	mt7996_mcu_wtbl_update_hdr_trans(dev, vif, sta);
 }
 
@@ -1116,6 +1135,9 @@ static void mt7996_sta_set_decap_offload(struct ieee80211_hw *hw,
 	else
 		clear_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
 
+	if (!msta->wcid.sta)
+		return;
+
 	mt7996_mcu_wtbl_update_hdr_trans(dev, vif, sta);
 }
 
@@ -1429,7 +1451,7 @@ mt7996_net_fill_forward_path(struct ieee80211_hw *hw,
 	if (!mtk_wed_device_active(wed))
 		return -ENODEV;
 
-	if (msta->wcid.idx > MT7996_WTBL_STA)
+	if (!msta->wcid.sta || msta->wcid.idx > MT7996_WTBL_STA)
 		return -EIO;
 
 	path->type = DEV_PATH_MTK_WDMA;
@@ -1461,8 +1483,7 @@ const struct ieee80211_ops mt7996_ops = {
 	.conf_tx = mt7996_conf_tx,
 	.configure_filter = mt7996_configure_filter,
 	.bss_info_changed = mt7996_bss_info_changed,
-	.sta_add = mt7996_sta_add,
-	.sta_remove = mt7996_sta_remove,
+	.sta_state = mt76_sta_state,
 	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
 	.link_sta_rc_update = mt7996_sta_rc_update,
 	.set_key = mt7996_set_key,

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

@@ -2169,13 +2169,12 @@ 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, bool newly)
+		       struct ieee80211_sta *sta, int conn_state, bool newly)
 {
 	struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
 	struct ieee80211_link_sta *link_sta;
 	struct mt7996_sta *msta;
 	struct sk_buff *skb;
-	int conn_state;
 	int ret;
 
 	msta = sta ? (struct mt7996_sta *)sta->drv_priv : &mvif->sta;
@@ -2188,11 +2187,10 @@ int mt7996_mcu_add_sta(struct mt7996_dev *dev, struct ieee80211_vif *vif,
 		return PTR_ERR(skb);
 
 	/* starec basic */
-	conn_state = enable ? CONN_STATE_PORT_SECURE : CONN_STATE_DISCONNECT;
 	mt76_connac_mcu_sta_basic_tlv(&dev->mt76, skb, vif, link_sta,
 				      conn_state, newly);
 
-	if (!enable)
+	if (conn_state == CONN_STATE_DISCONNECT)
 		goto out;
 
 	/* starec hdr trans */

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

@@ -618,6 +618,7 @@ struct mt7996_dev *mt7996_mmio_probe(struct device *pdev,
 		.rx_check = mt7996_rx_check,
 		.rx_poll_complete = mt7996_rx_poll_complete,
 		.sta_add = mt7996_mac_sta_add,
+		.sta_event = mt7996_mac_sta_event,
 		.sta_remove = mt7996_mac_sta_remove,
 		.update_survey = mt7996_update_channel,
 		.set_channel = mt7996_set_channel,

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

@@ -502,7 +502,7 @@ 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, bool newly);
+		       struct ieee80211_sta *sta, int conn_state, bool newly);
 int mt7996_mcu_add_tx_ba(struct mt7996_dev *dev,
 			 struct ieee80211_ampdu_params *params,
 			 bool add);
@@ -626,6 +626,8 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
 void mt7996_mac_set_coverage_class(struct mt7996_phy *phy);
 int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 		       struct ieee80211_sta *sta);
+int mt7996_mac_sta_event(struct mt76_dev *mdev, struct ieee80211_vif *vif,
+			 struct ieee80211_sta *sta, enum mt76_sta_event ev);
 void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta);
 void mt7996_mac_work(struct work_struct *work);