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ath9k: fix rate control fallback rate selection - improves throughput and link stability
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19716 3c298f89-4303-0410-b956-a3cf2f4a3e73
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package/mac80211/patches/530-ath9k_rc_fallback.patch
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55
package/mac80211/patches/530-ath9k_rc_fallback.patch
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@ -0,0 +1,55 @@
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--- a/drivers/net/wireless/ath/ath9k/rc.c
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+++ b/drivers/net/wireless/ath/ath9k/rc.c
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@@ -668,7 +668,7 @@ static void ath_get_rate(void *priv, str
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struct ieee80211_tx_rate *rates = tx_info->control.rates;
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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__le16 fc = hdr->frame_control;
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- u8 try_per_rate, i = 0, rix, nrix;
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+ u8 try_per_rate, i = 0, rix;
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int is_probe = 0;
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if (rate_control_send_low(sta, priv_sta, txrc))
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@@ -688,26 +688,25 @@ static void ath_get_rate(void *priv, str
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rate_table = sc->cur_rate_table;
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rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe);
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- nrix = rix;
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if (is_probe) {
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/* set one try for probe rates. For the
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* probes don't enable rts */
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ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
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- 1, nrix, 0);
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+ 1, rix, 0);
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/* Get the next tried/allowed rate. No RTS for the next series
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* after the probe rate
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*/
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- ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
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+ ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix);
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ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
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- try_per_rate, nrix, 0);
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+ try_per_rate, rix, 0);
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tx_info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
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} else {
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/* Set the choosen rate. No RTS for first series entry. */
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ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
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- try_per_rate, nrix, 0);
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+ try_per_rate, rix, 0);
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}
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/* Fill in the other rates for multirate retry */
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@@ -716,10 +715,10 @@ static void ath_get_rate(void *priv, str
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if (i + 1 == 4)
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try_per_rate = 8;
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- ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
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+ ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix);
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/* All other rates in the series have RTS enabled */
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ath_rc_rate_set_series(rate_table, &rates[i], txrc,
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- try_per_rate, nrix, 1);
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+ try_per_rate, rix, 1);
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}
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/*
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