mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ath9k: Update rate control for 11NA HT40 mode 

Now the lowest rate in 11na ht40 mode is 13.5Mbps this shortens the
range when compared to 11na ht20 mode where the lowest rate is 6.5Mbps.
To improve the range, make 6.5Mbps as the lowest rate in 11na ht40 mode,
this improves the range by approximately 2dB. 11ng ht40 does not have
this issue as it also has basic rates (1, 2, 5.5 and 11).

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2009-07-29 15:05:21 +05:30 committed by John W. Linville
parent df7fc0f973
commit 42e8856092
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/ath/ath9k/rc.c
View File

@ -44,7 +44,7 @@ static const struct ath_rate_table ar5416_11na_ratetable = {
{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
29300, 0x0c, 0x00, 108,
4, 7, 7, 7, 7, 0 },
{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
{ VALID_2040, VALID_2040, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
6400, 0x80, 0x00, 0,
0, 8, 24, 8, 24, 3216 },
{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
@ -463,8 +463,6 @@ static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw)
if (!ignore_cw && WLAN_RC_PHY_HT(phy))
if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG))
return 0;
if (!WLAN_RC_PHY_40(phy) && (capflag & WLAN_RC_40_FLAG))
return 0;
return 1;
}