Return-path: Received: from gv-out-0910.google.com ([216.239.58.191]:44684 "EHLO gv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757005AbYBZTMs (ORCPT ); Tue, 26 Feb 2008 14:12:48 -0500 Received: by gv-out-0910.google.com with SMTP id s4so966374gve.37 for ; Tue, 26 Feb 2008 11:12:46 -0800 (PST) From: Chris Clayton Reply-To: chris2553@googlemail.com To: "Ivo Van Doorn" Subject: Re: 2.6.25-rc2 regression in rt61pci wireless driver Date: Tue, 26 Feb 2008 19:11:39 +0000 Cc: linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org References: <200802252104.32416.chris2553@googlemail.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Message-Id: <200802261911.39577.chris2553@googlemail.com> (sfid-20080226_191253_523241_FE367BB9) Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi, > > I've bisected anyway and although the results are not absolutely > > conclusive, as I neared the end of the process, I was amongst a bunch of > > mac80211 patches. This set me on a path that resulted in me discovering > > that with the rt61pci driver, I can freeze my wireless network connection > > almost at will if I set mac82011's ieee80211_default_rc_algo parameter to > > 'pid'. if the parametre is set to 'simple', the network seems to be > > reliable. I've just let the ping application run on and ping another box > > on my network almost 1500 times whilst repeatedly transferring a kernel > > source tarball by ftp from another box and the network connection was > > mantained That's with the parameter set to 'simple', if \I set it to > > 'pid' the connection rarely survives more than 40 pings even without the > > ftp activity. > > > > If I replace my wireless card with one that uses the rtl8180 driver, the > > network connection seems to be reliable regardless of how I set the > > parameter, although I admit that i have not tested this extensively yet. > > I'll do that now and report later. > I've rerun my tests with the rtl8180 driver and found the network to be reliable with the mac82011 module's ieee80211_default_rc_algo parameter set to either 'simple' or 'pid'. > I'm about to send 4 patches to this (linux-wireless) list with patches > for rt2x00, > most of them you already tested individually, but several people reported > success after those patches. > > Hopefully it will be working for you as well. :) > Sorry, but that's not the case. I find the same results as without the patches. With the parameter set to 'pid', the network connection fails very quickly, but with it set to 'simple' I can ping and ftp files to and from my laptop as much as I like and the connection stays up. In fact, if anything the patches seem to have made the network even more fragile, in that it fails almost instantly once I start some network activity ( < 10 pings). I'm sure this is not the hardware - it works perfectly with Windows XP, with 2.6.23.14 plus the out-of-tree rt61 driver from serialmonkey, with the in-tree driver from 2.6.24.x and with 2.6.25-rc3 with the mac82011's ieee80211_default_rc_algo parameter set to 'simple'. Like I say above, sorry! Chris > Ivo -- Beauty is in the eye of the beerholder.