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Date:	Wed, 13 Jan 2010 21:06:27 +0100
From:	Jarek Poplawski <>
To:	Peter Rabbitson <>
Subject: Re: Reproducible corruption with SG offloading

Peter Rabbitson wrote, On 01/11/2010 01:22 PM:

> I have the following card:
> 02:02.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5701 Gigabit Ethernet (rev 15)


> 	Kernel driver in use: tg3
> When confronted with very specific repeatable data streams the card eventually
> starts setting garbage down the wire. If I do ethtool -k <ifname> sg off the
> problem disappears. Let me know if ou are interested in tracking this down,
> (whether software or hardware) otherwise I'll throw the card away and go with
> something else.
> Please CC me as I am not subscribed to netdev@
> This is my minimal test case with relevant data:

Interested or not, it would be useful to save more data on this, e.g. into
bugzilla report (plus some link here); especially the kernel version, these
tcpdumps as row files, ifconfigs, and as much as possible according to the

Jarek P.
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