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Subject: Re: 82571EB: Detected Hardware Unit Hang
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Joe Jin <joe.jin@oracle.com>
Cc: e1000-devel@lists.sf.net,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
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Date: Mon, 09 Jul 2012 11:21:17 +0200
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On Mon, 2012-07-09 at 16:51 +0800, Joe Jin wrote:
> Hi list,
> 
> I'm seeing a Unit Hang even with the latest e1000e driver 2.0.0 when doing
> scp test. this issue is easy do reproduced on SUN FIRE X2270 M2, just copy
> a big file (>500M) from another server will hit it at once. 
> 
> Would you please help on this?
> 

Its a known problem.

But apparently Intel guys are not very responsive, as they have another
patch than the following :

http://permalink.gmane.org/gmane.linux.network/232669


We only have to wait they push their alternative patch, eventually.

In the mean time, you can use Hiroaki SHIMODA patch, it works.