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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: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2008-11-20 11:51:18 +05:30 committed by John W. Linville
parent 40fc95d57c
commit 7ac47010a4
3 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/ath9k/rc.c
View File

@ -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)

1
drivers/net/wireless/ath9k/rc.h
View File

@ -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) \

2
drivers/net/wireless/ath9k/xmit.c
View File

@ -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;
}
}
}