Return-path: Received: from mail-wi0-f169.google.com ([209.85.212.169]:34321 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932590AbbGVInS (ORCPT ); Wed, 22 Jul 2015 04:43:18 -0400 Received: by wibud3 with SMTP id ud3so143938982wib.1 for ; Wed, 22 Jul 2015 01:43:17 -0700 (PDT) From: Martin Blumenstingl To: ath9k-devel@lists.ath9k.org Cc: ath9k-devel@qca.qualcomm.com, nbd@openwrt.org, linville@tuxdriver.com, linux-wireless@vger.kernel.org, Martin Blumenstingl Subject: [PATCH RESEND] ath9k: Fix NF CCA limits for AR9287 and AR9227 Date: Wed, 22 Jul 2015 10:42:43 +0200 Message-Id: <1437554563-11712-1-git-send-email-martin.blumenstingl@googlemail.com> (sfid-20150722_104338_377097_C16D6D7A) Sender: linux-wireless-owner@vger.kernel.org List-ID: The FreeBSD driver [0] uses the same 2G values as for the AR9280 chips. Using the same values in ath9k results in much better throughput for me. Before this patch I had a huge amount of packet loss (sometimes up to 40%) and the max transfer speed was somewhere around 5Mbit/s. With this patch applied I have zero packet loss and ten times the throughput. My device uses a AR9227 which is the PCI variant of the AR9287. [0] http://bxr.su/FreeBSD/sys/dev/ath/ath_hal/ar9002/ar9287.h Signed-off-by: Martin Blumenstingl --- Patch has not changed, I am just CC'ing @linux-wireless (instead of @ath9k-devel only). drivers/net/wireless/ath/ath9k/ar9002_phy.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9002_phy.h b/drivers/net/wireless/ath/ath9k/ar9002_phy.h index 6314ae2..9d17a53 100644 --- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h +++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h @@ -610,8 +610,8 @@ #define AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ -127 #define AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ -116 -#define AR_PHY_CCA_NOM_VAL_9287_2GHZ -120 +#define AR_PHY_CCA_NOM_VAL_9287_2GHZ -112 #define AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ -127 -#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ -110 +#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ -97 #endif -- 2.4.6