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[Xen-devel] Re: Jeremy's GIT-tree and network problems

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Subject: [Xen-devel] Re: Jeremy's GIT-tree and network problems
From: Stephan Seitz <stse+xen@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 30 Mar 2010 14:33:40 +0200
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Hi Jeremy!

On Mon, Mar 29, 2010 at 11:42:40AM -0700, Jeremy Fitzhardinge wrote:
Have you tried carpet-bombing the ethtools: turn off everything on all the dom0 interfaces (both the bridge(s) and all the component interfaces) and all the domU interfaces? It does look like some kind of checksum problem (or perhaps other offload?).

Well, the physical interfaces only had RX on. The virtual interfaces in Dom0 and DomU had RX, TX, SG, TSO and GSO on. Trying to switch off RX on the virtual interfaces produced an error message, but after switching off the other features, RX was off as well.

But after everything was off (in Dom0 bridge eth0 with peth0 and vif1.0 and bridge xenbr1 with eth1 and vif1.1 and in DomU eth0 and eth1), the setup didn’t start working. So if this is some kind of checksum problem, switching the checksum and offload features off don’t change it.

Do you have other suggestions?

Fortunately it looks like this is going to get some systematic attention. I'd really like any reasonable (ie, not inherently broken for other reasons) network setup to just work.

I hope so. Anf if there are patches to test, I will test it.

Shade and sweet water!


| Stephan Seitz             E-Mail: stse@xxxxxxxxxxxxxxxxxxx |
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