package/kernel/mac80211/patches/308-ath9k-Fix-NF-CCA-limits-for-AR9287-and-AR9227.patch

   1 From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
   2 Date: Wed, 22 Jul 2015 10:42:43 +0200
   3 Subject: [PATCH] ath9k: Fix NF CCA limits for AR9287 and AR9227
   4
   5 The FreeBSD driver [0] uses the same 2G values as for the AR9280 chips.
   6 Using the same values in ath9k results in much better throughput for me.
   7
   8 Before this patch I had a huge amount of packet loss (sometimes up to
   9 40%) and the max transfer speed was somewhere around 5Mbit/s. With this
  10 patch applied I have zero packet loss and ten times the throughput.
  11 My device uses a AR9227 which is the PCI variant of the AR9287.
  12
  13 [0] http://bxr.su/FreeBSD/sys/dev/ath/ath_hal/ar9002/ar9287.h
  14
  15 Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
  16 ---
  17
  18 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h
  19 +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h
  20 @@ -610,8 +610,8 @@
  21  #define AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ      -127
  22  #define AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ      -116
  23
  24 -#define AR_PHY_CCA_NOM_VAL_9287_2GHZ           -120
  25 +#define AR_PHY_CCA_NOM_VAL_9287_2GHZ           -112
  26  #define AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ    -127
  27 -#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ    -110
  28 +#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ    -97
  29
  30  #endif