From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: Re: Problem with VLANs and via-velocity driver Date: Thu, 19 Nov 2009 16:18:17 +0100 Message-ID: <4B0561B9.4050600@trash.net> References: <20091113033217.GQ838@cubit> <4AFCFF67.3060802@trash.net> <20091116005750.GR838@cubit> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Kevin Shanahan Return-path: Received: from stinky.trash.net ([213.144.137.162]:44813 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753427AbZKSPSN (ORCPT ); Thu, 19 Nov 2009 10:18:13 -0500 In-Reply-To: <20091116005750.GR838@cubit> Sender: netdev-owner@vger.kernel.org List-ID: Kevin Shanahan wrote: > On Fri, Nov 13, 2009 at 07:40:39AM +0100, Patrick McHardy wrote: >> Kevin Shanahan wrote: >>> Hi, >>> >>> I've had some problems with getting a fairly simple (I thought) VLAN >>> configuration working with the on board Via NICs on my Via M700 >>> board. Looks like as soon as a tagged VLAN interface is added, the >>> underlying "raw" (untagged) interface stops responding. >>> >>> ... >>> >>> A bit of searching found a few references to similar problems going >>> back a few years (2005, 2007). Sounded like there were some driver >>> issues, but it wasn't clear from the messages I found whether they >>> were believed to be fixed or not. I tried the same test using a >>> differnt NIC with the tg3 driver and there were no problems, so it >>> looks to me like it's still a via-velocity issue. Unfortunately I >>> don't have room to add NICs to this machine and need to use the on >>> board Via hardware. >> There's some special-casing for VID 0 in velocity_init_cam_filter(). >> Does "ip link add link eth0 type vlan id 0" make any difference? > > Thanks Patrick, this command got the untagged interface working again > (eth1 in my case). I can use this as a work around. > > I didn't really understand if there was a good reason for the > special-casing in this driver, but from at least from my user > perspective I think it would be better if the drivers were consistent > in how they handle this. I agree.