Re: [Xen-devel] Checksumming problem in pv_ops dom0 kernel / netback

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Mar 30, 2010 at 06:58:02PM -0400, Scott Garron wrote:
> S.H. Verbrugge wrote:
>> Ever since we switched to a pv_ops dom0 kernel (we were using 2.6.26  
>> xenkernel from Debian repo before, with Xen 3.2), we started to have  
>> some problems when attempting to route packets on a domU.
>
>      I'm having the same problem.  All TCP packets that are forwarded
> through a domU are somehow getting a static checksum (0x9e85) just as
> they're being put out on the wire.  ICMP is dropped by the dom0, as you
> describe, with the "Attempting to checksum a non UDP/TCP packet" message
> in dmesg.  More detail about my situation is in my post to xen-users, here:
>
> http://lists.xensource.com/archives/html/xen-users/2010-03/msg00846.html
>
>      It doesn't include a solution, though.
>
>> This is a tg3 interface
>
>      I'm also running the tg3 ethernet driver, which may be of
> significance.
>

I CCd some else having the same problem.. did you guys ever resolve this 
problem? 

For him the problem got solved when he replaced the pvops _domU_ kernel with 
2.6.18.8..
(Still running pvops in dom0).

-- Pasi


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