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ath9k: Fix incorrect user ratekbs of MCS15 ShortGI 

The user ratekbs of MCS15 ShortGI is incorrect and can not be lesser
than MCS15 rate. This incorrect rate may affect switching to higher
rates as the rate control algorithm always finds MCS15 is better
than MCS15 ShortGI and results in lower throughput. Fix this by
feeding the correct user ratekbs for MCS15 ShortGI rate.

This issue affects 3 stream case very badly as the 3 stream rates are
not used at all once we scale down to MCS15 from 3 stream rates.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Senthil Balasubramanian 2010-07-27 19:16:33 +05:30 committed by John W. Linville
parent 1d9d06a27a
commit 812c7c35a0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath9k/rc.c
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@ -74,7 +74,7 @@ static const struct ath_rate_table ar5416_11na_ratetable = {
[24] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 130000,
108300, 15, 15, 4, 23, 54, 25, 55 }, /* 130 Mb */
[25] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS_HGI, 144400,
12000, 15, 15, 4, 23, 54, 25, 55 }, /* 144.4 Mb */
120000, 15, 15, 4, 23, 54, 25, 55 }, /* 144.4 Mb */
[26] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 19500,
17400, 16, 16, 0, 24, 56, 26, 56 }, /* 19.5 Mb */
[27] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 39000,