From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mms1.broadcom.com ([216.31.210.17]:3262 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752206Ab2KTVJZ (ORCPT ); Tue, 20 Nov 2012 16:09:25 -0500 Message-ID: <50ABF17A.6020604@broadcom.com> (sfid-20121120_220928_697610_1ECAFF7D) Date: Tue, 20 Nov 2012 22:09:14 +0100 From: "Arend van Spriel" MIME-Version: 1.0 To: "Daniel Wagner" cc: "Seth Forshee" , linux-wireless@vger.kernel.org, "John W. Linville" , "Franky (Zhenhui) Lin" , "Brett Rudley" , "Roland Vossen" , "Kan Yan" , brcm80211-dev-list@broadcom.com Subject: Re: [PATCH v2 00/22] brcmsmac: Tx rework and expanded debug/trace support References: <1352988492-21340-1-git-send-email-seth.forshee@canonical.com> <50AA845C.2050809@monom.org> <50AB3182.5040505@monom.org> <20121120142822.GA26602@thinkpad-t410> <50ABC168.8080904@monom.org> In-Reply-To: <50ABC168.8080904@monom.org> Content-Type: text/plain; charset=iso-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 11/20/2012 06:44 PM, Daniel Wagner wrote: > Hi Seth, > > On 20.11.2012 15:28, Seth Forshee wrote: >> On Tue, Nov 20, 2012 at 08:30:10AM +0100, Daniel Wagner wrote: >>> Hi Seth, >>> >>> On 19.11.2012 20:11, Daniel Wagner wrote: >>>> Works perfectly fine on my machine. >>> >>> Well, not really true. Though I am not sure if this what I am seeing >>> related to your changes. I see following log only when I am using my >>> home AP. The pattern is that when the connection stop working I see >>> something like this in the log: >>> >>> [ 8735.159091] wlan0: moving STA 1c:c6:3c:1f:50:68 to state 4 >>> [ 8735.197298] wlan0: Rx A-MPDU request on tid 0 result 0 >>> [ 8735.566368] wlan0: Open BA session requested for 1c:c6:3c:1f:50:68 >>> tid 0 >>> [ 8735.573701] wlan0: activated addBA response timer on tid 0 >>> [ 8735.578826] wlan0: switched off addBA timer for tid 0 >>> [ 8735.578834] wlan0: Aggregation is on for tid 0 >>> [ 8749.687530] wlan0: tx session timer expired on tid 0 >>> [ 8749.687558] wlan0: Tx BA session stop requested for >>> 1c:c6:3c:1f:50:68 tid 0 >>> [ 8749.700550] wlan0: Stopping Tx BA session for 1c:c6:3c:1f:50:68 tid 0 >>> >>> >>> This is what I do: First establishing a connection, then after a >>> while any >>> traffic seems stops for a period and sometimes it recovers from that >>> point. If >>> not a disconnect/connect (using ConnMan) dance fixes the problem. >> >> The tx session timer expiring is a result of not having any aggregate >> transfers in a while. In my testing with iperf I see periods where the >> transfer seems to stall, but it always recovers. These are less frequent >> after my patches, but they still happen, and I haven't been able to work >> out the cause yet. I'm not sure whether these are related to what you're >> seeing or not. >> >> Luckily I've added a bunch of new debug code. Could you make sure you >> have MAC80211_MESSAGE_TRACING and BRCM_TRACING enabled in your config >> and collect a trace when this is happening by running: >> >> trace-cmd record -e mac80211 -e mac80211_msg -e brcmsmac \ >> -e brcmsmac_tx -e brcmsmac_msg >> >> This going to collect a lot of data, and you should bump up the trace >> buffer size to avoid overruns. Once you've got a trace please compress >> trace.dat and put it along with your dmesg somewhere where I can get at >> them. > > I hope I got it right. Here are the requested logs: > > http://www.monom.org/misc/brcmsmac/traces/ What channel is you AP on? Gr. AvS