Introduce packet_id for txs pktid management

index 476fa513d359..e26cdc254fa8 100644
@@ -566,6 +566,8 @@ mt76_alloc_device(struct device *pdev, unsigned int size,
 	spin_lock_init(&dev->token_lock);
 	idr_init(&dev->token);
 
+	INIT_LIST_HEAD(&dev->wcid_list);
+
 	INIT_LIST_HEAD(&dev->txwi_cache);
 
 	for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++)

@@ -1232,6 +1234,7 @@ mt76_sta_add(struct mt76_dev *dev, struct ieee80211_vif *vif,
 	wcid->ext_phy = ext_phy;
 	rcu_assign_pointer(dev->wcid[wcid->idx], wcid);
 
+	mt76_packet_id_init(wcid);
 out:
 	mutex_unlock(&dev->mutex);
 

@@ -1250,9 +1253,11 @@ void __mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif,
 	if (dev->drv->sta_remove)
 		dev->drv->sta_remove(dev, vif, sta);
 
-	mt76_tx_status_check(dev, wcid, true);
+	mt76_packet_id_flush(dev, wcid);
+
 	mt76_wcid_mask_clear(dev->wcid_mask, idx);
 	mt76_wcid_mask_clear(dev->wcid_phy_mask, idx);
+
 }
 EXPORT_SYMBOL_GPL(__mt76_sta_remove);
 

index ec360829a9ab..2e5e49c1d071 100644
@@ -261,7 +261,8 @@ struct mt76_wcid {
 	u32 tx_info;
 	bool sw_iv;
 
-	u8 packet_id;
+	struct list_head list;
+	struct idr pktid;
 };
 
 struct mt76_txq {

@@ -701,6 +702,7 @@ struct mt76_dev {
 
 	struct mt76_wcid global_wcid;
 	struct mt76_wcid __rcu *wcid[MT76_N_WCIDS];
+	struct list_head wcid_list;
 
 	u32 rev;
 

@@ -1310,14 +1312,22 @@ mt76_token_put(struct mt76_dev *dev, int token)
 	return txwi;
 }
 
-static inline int
-mt76_get_next_pkt_id(struct mt76_wcid *wcid)
+static inline void mt76_packet_id_init(struct mt76_wcid *wcid)
+{
+	INIT_LIST_HEAD(&wcid->list);
+	idr_init(&wcid->pktid);
+}
+
+static inline void
+mt76_packet_id_flush(struct mt76_dev *dev, struct mt76_wcid *wcid)
 {
-	wcid->packet_id = (wcid->packet_id + 1) & MT_PACKET_ID_MASK;
-	if (wcid->packet_id == MT_PACKET_ID_NO_ACK ||
-	    wcid->packet_id == MT_PACKET_ID_NO_SKB)
-		wcid->packet_id = MT_PACKET_ID_FIRST;
+	struct sk_buff_head list;
 
-	return wcid->packet_id;
+	mt76_tx_status_lock(dev, &list);
+	mt76_tx_status_skb_get(dev, wcid, -1, &list);
+	mt76_tx_status_unlock(dev, &list);
+
+	idr_destroy(&wcid->pktid);
 }
+
 #endif

index 8edea1e7a602..7ac4cd247a73 100644
@@ -69,6 +69,7 @@ mt7603_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	INIT_LIST_HEAD(&mvif->sta.poll_list);
 	mvif->sta.wcid.idx = idx;
 	mvif->sta.wcid.hw_key_idx = -1;
+	mt76_packet_id_init(&mvif->sta.wcid);
 
 	eth_broadcast_addr(bc_addr);
 	mt7603_wtbl_init(dev, idx, mvif->idx, bc_addr);

@@ -107,6 +108,8 @@ mt7603_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	mutex_lock(&dev->mt76.mutex);
 	dev->mt76.vif_mask &= ~BIT(mvif->idx);
 	mutex_unlock(&dev->mt76.mutex);
+
+	mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid);
 }
 
 void mt7603_init_edcca(struct mt7603_dev *dev)

index 7154acf3eb9b..9795c1b4551f 100644
@@ -231,6 +231,8 @@ static int mt7615_add_interface(struct ieee80211_hw *hw,
 	mvif->sta.wcid.idx = idx;
 	mvif->sta.wcid.ext_phy = mvif->mt76.band_idx;
 	mvif->sta.wcid.hw_key_idx = -1;
+	mt76_packet_id_init(&mvif->sta.wcid);
+
 	mt7615_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 

@@ -284,6 +286,8 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);
 	spin_unlock_bh(&dev->sta_poll_lock);
+
+	mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid);
 }
 
 static void mt7615_init_dfs_state(struct mt7615_phy *phy)

index ccdbab341271..1f17d86ff755 100644
@@ -287,6 +287,8 @@ mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
 	mvif->idx = idx;
 	mvif->group_wcid.idx = MT_VIF_WCID(idx);
 	mvif->group_wcid.hw_key_idx = -1;
+	mt76_packet_id_init(&mvif->group_wcid);
+
 	mtxq = (struct mt76_txq *)vif->txq->drv_priv;
 	mtxq->wcid = &mvif->group_wcid;
 }

@@ -341,6 +343,7 @@ void mt76x02_remove_interface(struct ieee80211_hw *hw,
 	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 
 	dev->mt76.vif_mask &= ~BIT(mvif->idx);
+	mt76_packet_id_flush(&dev->mt76, &mvif->group_wcid);
 }
 EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
 

index 0aea6272fd14..0f72cb4002ca 100644
@@ -239,6 +239,8 @@ static int mt7915_add_interface(struct ieee80211_hw *hw,
 	mvif->sta.wcid.ext_phy = mvif->band_idx;
 	mvif->sta.wcid.hw_key_idx = -1;
 	mvif->sta.wcid.tx_info |= MT_WCID_TX_INFO_SET;
+	mt76_packet_id_init(&mvif->sta.wcid);
+
 	mt7915_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 

@@ -293,6 +295,8 @@ static void mt7915_remove_interface(struct ieee80211_hw *hw,
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);
 	spin_unlock_bh(&dev->sta_poll_lock);
+
+	mt76_packet_id_flush(&dev->mt76, &msta->wcid);
 }
 
 static void mt7915_init_dfs_state(struct mt7915_phy *phy)

index cd3974b6ba8f..c51266e40cb4 100644
@@ -304,6 +304,8 @@ static int mt7921_add_interface(struct ieee80211_hw *hw,
 	mvif->sta.wcid.ext_phy = mvif->mt76.band_idx;
 	mvif->sta.wcid.hw_key_idx = -1;
 	mvif->sta.wcid.tx_info |= MT_WCID_TX_INFO_SET;
+	mt76_packet_id_init(&mvif->sta.wcid);
+
 	mt7921_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 

@@ -350,6 +352,8 @@ static void mt7921_remove_interface(struct ieee80211_hw *hw,
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);
 	spin_unlock_bh(&dev->sta_poll_lock);
+
+	mt76_packet_id_flush(&dev->mt76, &msta->wcid);
 }
 
 static int mt7921_set_channel(struct mt7921_phy *phy)

108 lines not on this page · raw message

index e26cdc254fa8..47e4494bcbff 100644
@@ -511,7 +511,7 @@ void mt76_unregister_phy(struct mt76_phy *phy)
 {
 	struct mt76_dev *dev = phy->dev;
 
-	mt76_tx_status_check(dev, NULL, true);
+	mt76_tx_status_check(dev, true);
 	ieee80211_unregister_hw(phy->hw);
 	dev->phy2 = NULL;
 }

@@ -639,7 +639,7 @@ void mt76_unregister_device(struct mt76_dev *dev)
 
 	if (IS_ENABLED(CONFIG_MT76_LEDS))
 		mt76_led_cleanup(dev);
-	mt76_tx_status_check(dev, NULL, true);
+	mt76_tx_status_check(dev, true);
 	ieee80211_unregister_hw(hw);
 }
 EXPORT_SYMBOL_GPL(mt76_unregister_device);

index 2e5e49c1d071..a62d74500fd0 100644
@@ -1115,8 +1115,7 @@ mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid, struct sk_buff *skb)
     __mt76_tx_complete_skb(dev, wcid, skb, NULL);
 }
 
-void mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid,
-			  bool flush);
+void mt76_tx_status_check(struct mt76_dev *dev, bool flush);
 int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		   struct ieee80211_sta *sta,
 		   enum ieee80211_sta_state old_state,

index 3972c56136a2..93a49db5b590 100644
@@ -1458,7 +1458,7 @@ static void mt7603_mac_watchdog_reset(struct mt7603_dev *dev)
 		mt76_queue_rx_reset(dev, i);
 	}
 
-	mt76_tx_status_check(&dev->mt76, NULL, true);
+	mt76_tx_status_check(&dev->mt76, true);
 
 	mt7603_dma_sched_reset(dev);
 

@@ -1814,7 +1814,7 @@ void mt7603_mac_work(struct work_struct *work)
 	bool reset = false;
 	int i, idx;
 
-	mt76_tx_status_check(&dev->mt76, NULL, false);
+	mt76_tx_status_check(&dev->mt76, false);
 
 	mutex_lock(&dev->mt76.mutex);
 

index ed1bba42a322..02900a56b124 100644
@@ -2082,7 +2082,7 @@ void mt7615_mac_work(struct work_struct *work)
 
 	mt7615_mutex_release(phy->dev);
 
-	mt76_tx_status_check(mphy->dev, NULL, false);
+	mt76_tx_status_check(mphy->dev, false);
 
 	timeout = mt7615_get_macwork_timeout(phy->dev);
 	ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work, timeout);

index cd2964d24eed..c7052d536446 100644
@@ -202,7 +202,7 @@ void mt7615_dma_reset(struct mt7615_dev *dev)
 	mt76_for_each_q_rx(&dev->mt76, i)
 		mt76_queue_rx_reset(dev, i);
 
-	mt76_tx_status_check(&dev->mt76, NULL, true);
+	mt76_tx_status_check(&dev->mt76, true);
 
 	mt7615_dma_start(dev);
 }

index 305bb8597531..fb0f8f34b8f2 100644
@@ -432,7 +432,7 @@ static int mt7663s_suspend(struct device *dev)
 	cancel_work_sync(&mdev->mt76.sdio.stat_work);
 	clear_bit(MT76_READING_STATS, &mdev->mphy.state);
 
-	mt76_tx_status_check(&mdev->mt76, NULL, true);
+	mt76_tx_status_check(&mdev->mt76, true);
 
 	return 0;
 }

index 07b21b208582..a404fd7ea968 100644
@@ -1186,7 +1186,7 @@ void mt76x02_mac_work(struct work_struct *work)
 
 	mutex_unlock(&dev->mt76.mutex);
 
-	mt76_tx_status_check(&dev->mt76, NULL, false);
+	mt76_tx_status_check(&dev->mt76, false);
 
 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work,
 				     MT_MAC_WORK_INTERVAL);

index b50084bbe83d..de04ecb5d86a 100644
@@ -472,7 +472,7 @@ static void mt76x02_watchdog_reset(struct mt76x02_dev *dev)
 		mt76_queue_rx_reset(dev, i);
 	}
 
-	mt76_tx_status_check(&dev->mt76, NULL, true);
+	mt76_tx_status_check(&dev->mt76, true);
 
 	mt76x02_mac_start(dev);
 

index 1c487f22453c..7d6287df8ae6 100644
@@ -1751,7 +1751,7 @@ mt7915_dma_reset(struct mt7915_dev *dev)
 	mt76_for_each_q_rx(&dev->mt76, i)
 		mt76_queue_rx_reset(dev, i);
 
-	mt76_tx_status_check(&dev->mt76, NULL, true);
+	mt76_tx_status_check(&dev->mt76, true);
 
 	/* re-init prefetch settings after reset */
 	mt7915_dma_prefetch(dev);

@@ -1964,7 +1964,7 @@ void mt7915_mac_work(struct work_struct *work)
 
 	mutex_unlock(&mphy->dev->mutex);
 
-	mt76_tx_status_check(mphy->dev, NULL, false);
+	mt76_tx_status_check(mphy->dev, false);
 
 	ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work,
 				     MT7915_WATCHDOG_TIME);

index 62cee662ba28..802e40e42040 100644
@@ -272,7 +272,7 @@ static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
 	mt76_for_each_q_rx(&dev->mt76, i)
 		mt76_queue_reset(dev, &dev->mt76.q_rx[i]);
 
-	mt76_tx_status_check(&dev->mt76, NULL, true);
+	mt76_tx_status_check(&dev->mt76, true);
 
 	return mt7921_dma_enable(dev);
 }

index 8fd11497d8e6..27f13228c5a7 100644
@@ -1695,7 +1695,7 @@ void mt7921_mac_work(struct work_struct *work)
 
 	mt7921_mutex_release(phy->dev);
 
-	mt76_tx_status_check(mphy->dev, NULL, false);
+	mt76_tx_status_check(mphy->dev, false);
 	ieee80211_queue_delayed_work(phy->mt76->hw, &mphy->mac_work,
 				     MT7921_WATCHDOG_TIME);
 }

index 783a15635ec5..4abf432750c6 100644
@@ -328,7 +328,7 @@ void mt76s_deinit(struct mt76_dev *dev)
 	cancel_work_sync(&sdio->stat_work);
 	clear_bit(MT76_READING_STATS, &dev->phy.state);
 
-	mt76_tx_status_check(dev, NULL, true);
+	mt76_tx_status_check(dev, true);
 
 	sdio_claim_host(sdio->func);
 	sdio_release_irq(sdio->func);

index 5ae95018415f..5f0040df9e1c 100644
@@ -188,9 +188,10 @@ mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid,
 EXPORT_SYMBOL_GPL(mt76_tx_status_skb_get);
 
 void
-mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid, bool flush)
+mt76_tx_status_check(struct mt76_dev *dev, bool flush)
 {
 	struct sk_buff_head list;
+	struct mt76_wcid *wcid;
 
 	mt76_tx_status_lock(dev, &list);
 	while (!list_empty(&dev->wcid_list)) {

index 1e9f60bb811a..0a7006c8959b 100644
@@ -1081,7 +1081,7 @@ void mt76u_stop_tx(struct mt76_dev *dev)
 
 	mt76_worker_enable(&dev->usb.status_worker);
 
-	mt76_tx_status_check(dev, NULL, true);
+	mt76_tx_status_check(dev, true);
 }
 EXPORT_SYMBOL_GPL(mt76u_stop_tx);
 

index 47e4494bcbff..29e6270032ad 100644
@@ -543,9 +543,9 @@ mt76_alloc_device(struct device *pdev, unsigned int size,
 	spin_lock_init(&dev->rx_lock);
 	spin_lock_init(&dev->lock);
 	spin_lock_init(&dev->cc_lock);
+	spin_lock_init(&dev->status_lock);
 	mutex_init(&dev->mutex);
 	init_waitqueue_head(&dev->tx_wait);
-	skb_queue_head_init(&dev->status_list);
 
 	skb_queue_head_init(&dev->mcu.res_q);
 	init_waitqueue_head(&dev->mcu.wait);

index a62d74500fd0..bb3f7314fcf2 100644
@@ -693,7 +693,8 @@ struct mt76_dev {
 	int token_count;
 
 	wait_queue_head_t tx_wait;
-	struct sk_buff_head status_list;
+	/* spinclock used to protect wcid pktid linked list */
+	spinlock_t status_lock;
 
 	u32 wcid_mask[DIV_ROUND_UP(MT76_N_WCIDS, 32)];
 	u32 wcid_phy_mask[DIV_ROUND_UP(MT76_N_WCIDS, 32)];

@@ -1096,9 +1097,9 @@ void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
 			 struct ieee80211_key_conf *key);
 
 void mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
-			 __acquires(&dev->status_list.lock);
+			 __acquires(&dev->status_lock);
 void mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
-			   __releases(&dev->status_list.lock);
+			   __releases(&dev->status_lock);
 
 int mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 			   struct sk_buff *skb);

index 5f0040df9e1c..aca41468cd75 100644
@@ -38,21 +38,21 @@ EXPORT_SYMBOL_GPL(mt76_tx_check_agg_ssn);
 
 void
 mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
-		   __acquires(&dev->status_list.lock)
+		   __acquires(&dev->status_lock)
 {
 	__skb_queue_head_init(list);
-	spin_lock_bh(&dev->status_list.lock);
+	spin_lock_bh(&dev->status_lock);
 }
 EXPORT_SYMBOL_GPL(mt76_tx_status_lock);
 
 void
 mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
-		      __releases(&dev->status_list.lock)
+		      __releases(&dev->status_lock)
 {
 	struct ieee80211_hw *hw;
 	struct sk_buff *skb;
 
-	spin_unlock_bh(&dev->status_list.lock);
+	spin_unlock_bh(&dev->status_lock);
 
 	rcu_read_lock();
 	while ((skb = __skb_dequeue(list)) != NULL) {

@@ -130,7 +130,7 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 			     IEEE80211_TX_CTL_RATE_CTRL_PROBE)))
 		return MT_PACKET_ID_NO_SKB;
 
-	spin_lock_bh(&dev->status_list.lock);
+	spin_lock_bh(&dev->status_lock);
 
 	pid = idr_alloc(&wcid->pktid, skb, MT_PACKET_ID_FIRST,
 			MT_PACKET_ID_MASK, GFP_ATOMIC);

@@ -147,7 +147,7 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 		list_add_tail(&wcid->list, &dev->wcid_list);
 
 out:
-	spin_unlock_bh(&dev->status_list.lock);
+	spin_unlock_bh(&dev->status_lock);
 
 	return pid;
 }

@@ -160,7 +160,7 @@ mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid,
 	struct sk_buff *skb;
 	int id;
 
-	lockdep_assert_held(&dev->status_list.lock);
+	lockdep_assert_held(&dev->status_lock);
 
 	skb = idr_remove(&wcid->pktid, pktid);
 	if (skb)

index bb3f7314fcf2..e76fb04de047 100644
@@ -308,8 +308,13 @@ struct mt76_rx_tid {
 #define MT_PACKET_ID_NO_SKB		1
 #define MT_PACKET_ID_FIRST		2
 #define MT_PACKET_ID_HAS_RATE		BIT(7)
-
-#define MT_TX_STATUS_SKB_TIMEOUT	HZ
+/* This is timer for when to give up when waiting for TXS callback,
+ * with starting time being the time at which the DMA_DONE callback
+ * was seen (so, we know packet was processed then, it should not take
+ * long after that for firmware to send the TXS callback if it is going
+ * to do so.)
+ */
+#define MT_TX_STATUS_SKB_TIMEOUT	(HZ / 4)
 
 struct mt76_tx_cb {
 	unsigned long jiffies;

index aca41468cd75..1c4e6e4fa8fc 100644
@@ -141,7 +141,6 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 
 	cb->wcid = wcid->idx;
 	cb->pktid = pid;
-	cb->jiffies = jiffies;
 
 	if (list_empty(&wcid->list))
 		list_add_tail(&wcid->list, &dev->wcid_list);

@@ -174,6 +173,9 @@ mt76_tx_status_skb_get(struct mt76_dev *dev, struct mt76_wcid *wcid, int pktid,
 					      MT_TX_STATUS_SKB_TIMEOUT))
 			continue;
 
+		/* It has been too long since DMA_DONE, time out this packet
+		 * and stop waiting for TXS callback.
+		 */
 		idr_remove(&wcid->pktid, cb->pktid);
 		__mt76_tx_status_skb_done(dev, skb, MT_TX_CB_TXS_FAILED |
 						    MT_TX_CB_TXS_DONE, list);

@@ -259,6 +261,7 @@ void __mt76_tx_complete_skb(struct mt76_dev *dev, u16 wcid_idx, struct sk_buff *
 	}
 
 	mt76_tx_status_lock(dev, &list);
+	cb->jiffies = jiffies;
 	__mt76_tx_status_skb_done(dev, skb, MT_TX_CB_DMA_DONE, &list);
 	mt76_tx_status_unlock(dev, &list);