[PATCH 2/2] wifi: mt76: connac: fix stats->tx_bytes calculation

[Ryder Lee]

The stats->tx_bytes shall subtract retry byte from tx byte.

Fixes: 43eaa3689507 (wifi: mt76: add PPDU based TxS support for WED device)
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt76_connac2_mac.h | 2 +-
 drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c  | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac2_mac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac2_mac.h
index a5ec0f631385..fabf637bdf7f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac2_mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac2_mac.h
@@ -173,7 +173,7 @@ enum {
 #define MT_TXS5_MPDU_TX_CNT		GENMASK(31, 23)
 
 #define MT_TXS6_MPDU_FAIL_CNT		GENMASK(31, 23)
-
+#define MT_TXS7_MPDU_RETRY_BYTE		GENMASK(22, 0)
 #define MT_TXS7_MPDU_RETRY_CNT		GENMASK(31, 23)
 
 /* RXD DW0 */
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
index ee0fbfcd07d6..d39a3cc5e381 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
@@ -608,7 +608,8 @@ bool mt76_connac2_mac_fill_txs(struct mt76_dev *dev, struct mt76_wcid *wcid,
 	/* PPDU based reporting */
 	if (FIELD_GET(MT_TXS0_TXS_FORMAT, txs) > 1) {
 		stats->tx_bytes +=
-			le32_get_bits(txs_data[5], MT_TXS5_MPDU_TX_BYTE);
+			le32_get_bits(txs_data[5], MT_TXS5_MPDU_TX_BYTE) -
+			le32_get_bits(txs_data[7], MT_TXS7_MPDU_RETRY_BYTE);
 		stats->tx_packets +=
 			le32_get_bits(txs_data[5], MT_TXS5_MPDU_TX_CNT);
 		stats->tx_failed +=
-- 
2.18.0