linux-kernel - Problem with e1000e, 802.1Q VLAN's and IPMI

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Message-ID: <20100726073920.GD30155@centrinvest.ru>
Date:	Mon, 26 Jul 2010 11:39:20 +0400
From:	"Andrey Panin" <pazke@...trinvest.ru>
To:	linux-kernel@...r.kernel.org
Cc:	e1000-devel@...ts.sourceforge.net,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>,
	PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>,
	John Ronciak <john.ronciak@...el.com>
Subject: Problem with e1000e, 802.1Q VLAN's and IPMI

Hello all,

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". 
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.

There was no such problem with e1000 driver from 2.6.18.

Unfortunately I can't provide additional info right now, but I can provide
it slightly later and I'm ready to test patches.

Best regards.
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