netdev - Re: [PATCH 2/2] net/dl2k: Don't reconfigure link @100Mbps when disabling autoneg @1Gbps

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Message-ID: <82y62dk1qz.fsf@mid.bfk.de>
Date:	Wed, 11 May 2011 09:47:16 +0000
From:	Florian Weimer <fweimer@....de>
To:	David Decotigny <decot@...gle.com>
Cc:	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	"David S. Miller" <davem@...emloft.net>,
	Joe Perches <joe@...ches.com>,
	Stanislaw Gruszka <sgruszka@...hat.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] net/dl2k: Don't reconfigure link @100Mbps when disabling autoneg @1Gbps

* David Decotigny:

> Tested: module compiling, NOT tested on real hardware.

To my knowledge, dl2k is broken.  Some sort of synchronization
primitives are missing.  Under load, the NIC's notion of ring buffer
status diverges from the host's view. 8-(

-- 
Florian Weimer                <fweimer@....de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99
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