ath10k: keep track of queue depth per txq

This will be necessary for later.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/core.h

@@ -311,6 +311,7 @@ struct ath10k_peer {
 
 struct ath10k_txq {
 	struct list_head list;
+	unsigned long num_fw_queued;
 };
 
 struct ath10k_sta {

drivers/net/wireless/ath/ath10k/mac.c

@@ -3669,6 +3669,7 @@ static int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw,
 	const bool is_presp = false;
 	struct ath10k *ar = hw->priv;
 	struct ath10k_htt *htt = &ar->htt;
+	struct ath10k_txq *artxq = (void *)txq->drv_priv;
 	struct ieee80211_vif *vif = txq->vif;
 	struct ieee80211_sta *sta = txq->sta;
 	enum ath10k_hw_txrx_mode txmode;
@@ -3708,6 +3709,10 @@ static int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw,
 		return ret;
 	}
 
+	spin_lock_bh(&ar->htt.tx_lock);
+	artxq->num_fw_queued++;
+	spin_unlock_bh(&ar->htt.tx_lock);
+
 	return 0;
 }
 

drivers/net/wireless/ath/ath10k/txrx.c

@@ -55,7 +55,9 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt,
 	struct ath10k *ar = htt->ar;
 	struct device *dev = ar->dev;
 	struct ieee80211_tx_info *info;
+	struct ieee80211_txq *txq;
 	struct ath10k_skb_cb *skb_cb;
+	struct ath10k_txq *artxq;
 	struct sk_buff *msdu;
 	bool limit_mgmt_desc = false;
 
@@ -80,11 +82,16 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt,
 	}
 
 	skb_cb = ATH10K_SKB_CB(msdu);
+	txq = skb_cb->txq;
+	artxq = (void *)txq->drv_priv;
 
 	if (unlikely(skb_cb->flags & ATH10K_SKB_F_MGMT) &&
 	    ar->hw_params.max_probe_resp_desc_thres)
 		limit_mgmt_desc = true;
 
+	if (txq)
+		artxq->num_fw_queued--;
+
 	ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
 	ath10k_htt_tx_dec_pending(htt, limit_mgmt_desc);
 	if (htt->num_pending_tx == 0)