mt76: mt7615: add a get_stats() callback

Add a get_stats() callback for mib statistics.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/main.c

@@ -633,6 +633,21 @@ mt7615_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			  IEEE80211_STA_NOTEXIST);
 }
 
+static int
+mt7615_get_stats(struct ieee80211_hw *hw,
+		 struct ieee80211_low_level_stats *stats)
+{
+	struct mt7615_phy *phy = mt7615_hw_phy(hw);
+	struct mib_stats *mib = &phy->mib;
+
+	stats->dot11RTSSuccessCount = mib->rts_cnt;
+	stats->dot11RTSFailureCount = mib->rts_retries_cnt;
+	stats->dot11FCSErrorCount = mib->fcs_err_cnt;
+	stats->dot11ACKFailureCount = mib->ack_fail_cnt;
+
+	return 0;
+}
+
 static u64
 mt7615_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
@@ -710,6 +725,7 @@ const struct ieee80211_ops mt7615_ops = {
 	.release_buffered_frames = mt76_release_buffered_frames,
 	.get_txpower = mt76_get_txpower,
 	.channel_switch_beacon = mt7615_channel_switch_beacon,
+	.get_stats = mt7615_get_stats,
 	.get_tsf = mt7615_get_tsf,
 	.get_survey = mt76_get_survey,
 	.get_antenna = mt76_get_antenna,