Return-path: Received: from hotel311.server4you.de ([85.25.146.15]:51787 "EHLO hotel311.server4you.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751886Ab2KTRoK (ORCPT ); Tue, 20 Nov 2012 12:44:10 -0500 Message-ID: <50ABC168.8080904@monom.org> (sfid-20121120_184414_707020_199934C3) Date: Tue, 20 Nov 2012 18:44:08 +0100 From: Daniel Wagner MIME-Version: 1.0 To: Seth Forshee CC: Arend van Spriel , 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> In-Reply-To: <20121120142822.GA26602@thinkpad-t410> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: 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/ thanks, daniel