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[Xen-devel] Re: e1000: Problem with "disable CRC stripping workaround" p

To: Auke Kok <auke-jan.h.kok@xxxxxxxxx>
Subject: [Xen-devel] Re: e1000: Problem with "disable CRC stripping workaround" patch
From: Mark McLoughlin <markmc@xxxxxxxxxx>
Date: Fri, 21 Jul 2006 09:51:35 +0100
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, jesse.brandeburg@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
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On Thu, 2006-07-20 at 09:42 -0700, Auke Kok wrote:
> Mark McLoughlin wrote:
> > Hi Jesse,
> >     I just came across this:
> > 
> >   http://www.mail-archive.com/netdev@xxxxxxxxxxxxxxx/msg14547.html
> > 
> >     I'm seeing a problem with this currently under Xen's bridging
> > configuration.

>  >    One option is to fix this specific problem is to subtract the CRC
>  > length from skb->len in e1000, another is to raise the MTU on the
>  > receive side of Xen's loopback interface. I've attached a patch for the
>  > latter, but I've no real opinion on which is more correct.
> We were sort of expecting this and sent the following patch upstream already 
> - 
> it's already queued for 2.6.18-rc3:
> http://kernel.org/git/?p=linux/kernel/git/jgarzik/netdev-2.6.git;a=commitdiff_plain;h=f235a2abb27b9396d2108dd2987fb8262cb508a3;hp=d3d9e484b2ca502c87156b69fa6b8f8fd5fa18a0
> Please give it a try and let us know if it fixes the issue for you, it should 
> be much better than patching xen's code.

        Yep, this fixes the problem for me.


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