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rt2800: change default retry settings 

We do not have option to set per frame retry count. We have only global
TX_RTY_CFG registers which specify the number or retries. Set setting
of that register to value that correspond rate control algorithm number
of frame post (number of retries + 1), which is 3 for aggregated frames.
This should help with big amount of retries on bad conditions, hence
mitigate buffer-bloat like problems.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Stanislaw Gruszka 2017-01-06 14:05:13 +01:00 committed by Kalle Valo
parent 15ec51b25e
commit 01d97ef4b2
1 changed files with 9 additions and 2 deletions
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11
drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@ -4769,8 +4769,8 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
rt2800_register_write(rt2x00dev, PBF_MAX_PCNT, 0x1f3fbf9f);
rt2800_register_read(rt2x00dev, TX_RTY_CFG, &reg);
rt2x00_set_field32(&reg, TX_RTY_CFG_SHORT_RTY_LIMIT, 15);
rt2x00_set_field32(&reg, TX_RTY_CFG_LONG_RTY_LIMIT, 31);
rt2x00_set_field32(&reg, TX_RTY_CFG_SHORT_RTY_LIMIT, 2);
rt2x00_set_field32(&reg, TX_RTY_CFG_LONG_RTY_LIMIT, 2);
rt2x00_set_field32(&reg, TX_RTY_CFG_LONG_RTY_THRE, 2000);
rt2x00_set_field32(&reg, TX_RTY_CFG_NON_AGG_RTY_MODE, 0);
rt2x00_set_field32(&reg, TX_RTY_CFG_AGG_RTY_MODE, 0);
@ -7513,6 +7513,13 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
*/
rt2x00dev->hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
/*
* Change default retry settings to values corresponding more closely
* to rate[0].count setting of minstrel rate control algorithm.
*/
rt2x00dev->hw->wiphy->retry_short = 2;
rt2x00dev->hw->wiphy->retry_long = 2;
/*
* Initialize all hw fields.
*/