mt76: introduce mt76_txq_id field in mt76_queue_entry

Add mt76_txq_id field to mt76_queue_entry in order to properly
track outstanding frames for mt7615 that relies on a single hw queue
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -164,7 +164,7 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, enum mt76_txq_id qid, bool flush)
 	while (q->queued && q->tail != last) {
 		mt76_dma_tx_cleanup_idx(dev, q, q->tail, &entry);
 		if (entry.schedule)
-			dev->q_tx[qid].swq_queued--;
+			dev->q_tx[entry.qid].swq_queued--;
 
 		q->tail = (q->tail + 1) % q->ndesc;
 		q->queued--;

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

@@ -100,6 +100,7 @@ struct mt76_queue_entry {
 		struct mt76_txwi_cache *txwi;
 		struct mt76u_buf ubuf;
 	};
+	enum mt76_txq_id qid;
 	bool schedule;
 };
 

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

@@ -468,6 +468,7 @@ mt76_txq_send_burst(struct mt76_dev *dev, struct mt76_sw_queue *sq,
 	} while (n_frames < limit);
 
 	if (!probe) {
+		hwq->entry[idx].qid = sq - dev->q_tx;
 		hwq->entry[idx].schedule = true;
 		sq->swq_queued++;
 	}