Return-path: Received: from an-out-0708.google.com ([209.85.132.248]:20918 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750750AbYF1Syx (ORCPT ); Sat, 28 Jun 2008 14:54:53 -0400 Received: by an-out-0708.google.com with SMTP id d40so195140and.103 for ; Sat, 28 Jun 2008 11:54:52 -0700 (PDT) Message-ID: <43e72e890806281154j10c7032cpccfcd88469dfe187@mail.gmail.com> (sfid-20080628_205524_955042_3A74F309) Date: Sat, 28 Jun 2008 11:54:52 -0700 From: "Luis R. Rodriguez" To: "Tomas Winkler" Subject: Re: compat-wireless high packet loss. Cc: "Johannes Berg" , "David Miller" , "John W. Linville" , "Linux Wireless" , "Emmanuel Grumbach" , "Cohen, Guy" In-Reply-To: <1ba2fa240806271746m15f967edj5693e2a6eecf15e2@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 References: <1ba2fa240806261603g30c3e757y9166c2f9e05f7666@mail.gmail.com> <43e72e890806271300m626f67ayabf43fa02fe239b8@mail.gmail.com> <1ba2fa240806271746m15f967edj5693e2a6eecf15e2@mail.gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, Jun 27, 2008 at 5:46 PM, Tomas Winkler wrote: > On Fri, Jun 27, 2008 at 11:00 PM, Luis R. Rodriguez wrote: >> On Thu, Jun 26, 2008 at 4:03 PM, Tomas Winkler wrote: >>> We've experienced very high packet loss when using latest >>> compat-wireless witth iwlwifi driver over 2.6.24 and 2.6.25 stable >>> kernels. This is not happening with 2.6.26-rc3 as a target kernel (not >>> sure about rc1 and rc2) >>> The traffic is UDP TX with large tx buffers ~26000. >>> We are still investigating yet if someone has any idea please share with us. >> >> I can't think of anything off the top of my head, really... > > This is something in the network stack. This is also happening with > ethernet USB devices. Something between 2.6.25 and 2.6.26-rc3 has > fixed it. > Have to find what otherwise all the compat-wireless will be unusable for us > Thanks for the answer anyway. Either way if you try to port wireless-testing drivers to 2.6.25 you'll probably end up using the same things on compat-wirelesss or just slightly modified, so if there is an issue regardless it can be fixed through compat-wireless. Just my $0.02 Rupees. Luis