Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755570Ab0G3HAT (ORCPT ); Fri, 30 Jul 2010 03:00:19 -0400 Received: from centrinvest.ru ([94.25.115.130]:58484 "EHLO centrinvest.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754647Ab0G3HAR (ORCPT ); Fri, 30 Jul 2010 03:00:17 -0400 From: "Andrey Panin" Date: Fri, 30 Jul 2010 11:00:11 +0400 To: "Brandeburg, Jesse" Cc: "linux-kernel@vger.kernel.org" , "e1000-devel@lists.sourceforge.net" , "Kirsher, Jeffrey T" , "Allan, Bruce W" , "Duyck, Alexander H" , "Waskiewicz Jr, Peter P" , "Ronciak, John" Subject: Re: Problem with e1000e, 802.1Q VLAN's and IPMI Message-ID: <20100730070011.GA29453@centrinvest.ru> Mail-Followup-To: "Brandeburg, Jesse" , "linux-kernel@vger.kernel.org" , "e1000-devel@lists.sourceforge.net" , "Kirsher, Jeffrey T" , "Allan, Bruce W" , "Duyck, Alexander H" , "Waskiewicz Jr, Peter P" , "Ronciak, John" References: <20100726073920.GD30155@centrinvest.ru> <20100727120552.GA31741@centrinvest.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100727120552.GA31741@centrinvest.ru> X-Uname: Linux 2.6.26-1-amd64 x86_64 User-Agent: Mutt/1.5.20 (2009-06-14) X-Anti-Virus: kav4lms: continue Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2160 Lines: 41 On 208, 07 27, 2010 at 04:05:52 +0400, Andrey Panin wrote: > On 207, 07 26, 2010 at 09:45:06AM -0700, Brandeburg, Jesse wrote: > > > > On Mon, 26 Jul 2010, Andrey Panin wrote: > > > I have a problem using IPMI on Super Micro X7SBL motherboard (AOC-IPMI20-E BMC). > > > BMC shares ethernet port with onboard e1000e. It works when IPMI traffic is > > > untagged (CrcStripping=0 module option used), but if I try to use 802.1Q vlan > > > for IPMI traffic BMC stops responding right after "ifup eth0". > > > > We've heard of this issue (or similar) before. I believe for the other > > guys they had to run IPMI traffic untagged, if your main network is > > running untagged. The problem in this case is that the tags are being > > stripped in hardware even for the SMBUS packets, at which point the BMC > > that is stupid and doesn't understand offloading hardware gets confused > > that the traffic it is receiving doesn't have a vlan tag. > > I suspected something like that. Unfortunately Super Micro isn't interested > in fixing their BMC, at least latest firmware doesn't fix the issue. > > > > I tested 2.6.26 (debian stable kernel) and 2.6.35-rc6. > > > Looks like there is some problem with 802.1Q tags stripping/inserting. > > > > Thanks for testing the latest kernel. > > > > > There was no such problem with e1000 driver from 2.6.18. > > > > Hm, that is an interesting statement. The major changes to the driver > > include stripping tags all the time when not in promisc mode, and there > > have been some fixes and attempts to fix the ipmi issues some > > (particularly supermicro) BMCs have. I'm quite surprised it worked for > > you at all (there have been quite a few issues in this area) > > After some sleep I'm not so sure that it was really working :( > I'll retest it more thoroughly this evening. After retest I can confirm that tagged IPMI works with 2.6.18 e1000 driver. -- 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/