Return-path: Received: from nbd.name ([46.4.11.11]:54287 "EHLO nbd.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753389AbaCKJgz (ORCPT ); Tue, 11 Mar 2014 05:36:55 -0400 Message-ID: <531ED921.5040601@openwrt.org> (sfid-20140311_103658_647797_CE216D94) Date: Tue, 11 Mar 2014 10:36:33 +0100 From: Felix Fietkau MIME-Version: 1.0 To: Helmut Schaa CC: linux-wireless , John Linville Subject: Re: [PATCH 3.14] ath9k: fix ps-poll responses under a-mpdu sessions References: <1393073299-4831-1-git-send-email-nbd@openwrt.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 2014-03-11 10:28, Helmut Schaa wrote: > On Sat, Feb 22, 2014 at 1:48 PM, Felix Fietkau wrote: >> When passing tx frames to the U-APSD queue for powersave poll responses, >> the ath_atx_tid pointer needs to be passed to ath_tx_setup_buffer for >> proper sequence number accounting. >> >> This fixes high latency and connection stability issues with ath9k >> running as AP and a few kinds of mobile phones as client, when PS-Poll >> is heavily used >> >> Cc: stable@vger.kernel.org >> Signed-off-by: Felix Fietkau >> --- > > Hi Felix, > > this commit introduced a regression for me when using Intel Win7 > clients on a ath9k AP. > > I was not able to track the exact issue down yet :( but it seems to be > related to the Intel > client constantly tearing down the BA session and entering/leaving PS mode. > > Any idea? Please make some packet captures and describe more clearly what the regression is. Do you see connections stalling, big latencies, etc? - Felix