Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752756AbYK0FRY (ORCPT ); Thu, 27 Nov 2008 00:17:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750931AbYK0FRK (ORCPT ); Thu, 27 Nov 2008 00:17:10 -0500 Received: from 1wt.eu ([62.212.114.60]:1401 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750890AbYK0FRJ (ORCPT ); Thu, 27 Nov 2008 00:17:09 -0500 Date: Thu, 27 Nov 2008 06:16:59 +0100 From: Willy Tarreau To: Matt Carlson Cc: Roger Heflin , Peter Zijlstra , LKML , netdev Subject: Re: WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0xfe/0x17e() with tg3 network Message-ID: <20081127051659.GA26057@1wt.eu> References: <20081120184310.GB27712@xw6200.broadcom.net> <20081120212637.GB23844@1wt.eu> <20081120215318.GB27907@xw6200.broadcom.net> <20081124132744.GB24851@1wt.eu> <20081124215247.GA29696@1wt.eu> <20081125015223.GA9151@xw6200.broadcom.net> <20081125053128.GA32426@1wt.eu> <20081125175413.GA9808@xw6200.broadcom.net> <20081126211220.GA22374@1wt.eu> <20081126225421.GA8906@xw6200.broadcom.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081126225421.GA8906@xw6200.broadcom.net> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1975 Lines: 43 On Wed, Nov 26, 2008 at 02:54:21PM -0800, Matt Carlson wrote: (...) > > I've run a new test on a switch I have here at home (another el-cheapo, > > non-manageable 100 Mbps, netgear this time). Unfortunately I cannot > > reproduce the problem at all. I have disabled FC on my laptop, it did > > not have any effect. > > Disabling FC should have a positive effect, not a negative one. It > might be the case that the switch does not advertise nor support FC. If > that is true, you might not be able to repro the problem no matter what > you did (if your problem is what I think it is). Can you check your > link messages and see if it really is negotiated to off? (I see the > message above, but I don't think that is with the current switch.) yes the switch does advertuse FC : willy@wtap:~$ dmesg|grep eth0 eth0: Tigon3 [partno(BMC5705mA3) rev 3003 PHY(5705)] (PCI:33MHz:32-bit) 10/100/1000Base-T Ethernet 00:0d:9d:91:ef:24 eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] WireSpeed[0] TSOcap[1] eth0: dma_rwctrl[763f0000] dma_mask[64-bit] tg3: eth0: Link is up at 100 Mbps, full duplex. tg3: eth0: Flow control is on for TX and on for RX. > > I have disabled auto-neg and manually forced the > > speed to 100/Full on my laptop, and could not reproduce the problem > > either (though the speed was much lower due to the switch obviously > > negociating 100/Half when not seeing my NWay frames). > > Yes. If you force the link, both sides must be forced. The switch > rightly assumes HD when bringing the link up. I know ;-) but not seeing the problem, I started to suspect that the other switch was a little bit ill and tried to reproduce some problems I might incidently have been encountering on it. Regards, Willy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/