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Commit 7ac47010 authored by Vasanthakumar Thiagarajan's avatar Vasanthakumar Thiagarajan Committed by John W. Linville
Browse files

ath9k: Dont update rate control for every AMPDU 



Update the rate control only with the tx status of first
AMPDU of an aggregation. This patch fixes frequent drops
in throughput.

Signed-off-by: default avatarVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 40fc95d5

drivers/net/wireless/ath9k/rc.c

+2 −1
Original line number Diff line number Diff line
@@ -1413,7 +1413,8 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, 
	an = (struct ath_node *)sta->drv_priv;

	final_ts_idx = tx_info_priv->tx.ts_rateindex;



	if (!an || !priv_sta || !ieee80211_is_data(fc))

	if (!an || !priv_sta || !ieee80211_is_data(fc) ||

	    !tx_info_priv->update_rc)

		goto exit;



	if (tx_info_priv->tx.ts_status & ATH9K_TXERR_FILT)

drivers/net/wireless/ath9k/rc.h

+1 −0
Original line number Diff line number Diff line
@@ -188,6 +188,7 @@ struct ath_tx_info_priv { 
	struct ath_tx_status tx;

	int n_frames;

	int n_bad_frames;

	bool update_rc;

};



#define ATH_TX_INFO_PRIV(tx_info) \

drivers/net/wireless/ath9k/xmit.c

+2 −0
Original line number Diff line number Diff line
@@ -950,6 +950,7 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds, int nbad) 
	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);

	struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);



	tx_info_priv->update_rc = false;

	if (ds->ds_txstat.ts_status & ATH9K_TXERR_FILT)

		tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
@@ -960,6 +961,7 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds, int nbad) 
			       sizeof(tx_info_priv->tx));

			tx_info_priv->n_frames = bf->bf_nframes;

			tx_info_priv->n_bad_frames = nbad;

			tx_info_priv->update_rc = true;

		}

	}

}