Return-path: Received: from fg-out-1718.google.com ([72.14.220.153]:40678 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751627AbZGGQwN convert rfc822-to-8bit (ORCPT ); Tue, 7 Jul 2009 12:52:13 -0400 Received: by fg-out-1718.google.com with SMTP id e12so929115fga.17 for ; Tue, 07 Jul 2009 09:52:11 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1246984369.28570.42.camel@localhost.localdomain> References: <5135d20a0907070928o19322c3waf41a7b59d4b309e@mail.gmail.com> <1246984369.28570.42.camel@localhost.localdomain> Date: Wed, 8 Jul 2009 00:52:10 +0800 Message-ID: <5135d20a0907070952o18465a2epaac6de932f037632@mail.gmail.com> Subject: Re: a question about marvell sd8686's wmm_config_change event From: fengzeheng To: Dan Williams Cc: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: If this event happen, then packet lost appear. However , I just send 80kbps udp stream using Iperf.... will 80kbps cause firmware's wmm queue full or change wmm setting? 2009/7/8 Dan Williams : > On Wed, 2009-07-08 at 00:28 +0800, fengzeheng wrote: >> hi, dan and all >> ? ? ?My wireless card sd8686 reports that wmm_config_change about >> every 2 seconds though wmm's setting in AP's beacons don't change. >> seems that driver receive MACREG_INT_CODE_WMM_STATUS_CHANGE event from >> firmware every 2 seconds. And according >> to firmware spec v5.1 ?this event generated when firmware monitors a >> change in wmm state. This is a result of an ap change in the wmm >> parameter ie or a change in the operational state of one of the AC >> queues. However , ?I can't find any change of AP's wme settings in >> beacon from the sniffer packets. So why does firmware send this event? >> thanks for your any comments. > > It's probably something in the internal firmware's WMM queues then, not > something from the AP's IEs. ?Is the event causing a problem? > > Dan > > > -- Best Regards Fzh