Re: [Xen-devel] [PATCH 2/5] hotplug/linux: Add an option to disable acceleration on VIF

[Sylvain Munaut <s.munaut@xxxxxxxxxxxxxxxxxxxx>]

Hi,

>> If a kernel driver in dom0 tries to access a network service
>> running in a domU, strange things happen if the acceleration
>> is not disabled. This offers an easy option to do it.
>
> By acceleration here you mean tx checksum offload I think?

Yes.

> How does one go about arranging for this xenstore key to be set?

Just like 'ip' for eg. just put it in the vif config key like :
vif = ['mac=00:16:3e:00:00:01,ip=192.168.1.254,accel=off']


> The XCP vif script[0] handles a wide variety of keys via keys like
> ethtool-tx ethtool-rx etc.

Ah yes indeed. I don't use XCP, just plain xen.


> FWIW I think this could also be achieved locally with a script
> in /etc/xen/scripts/vif-post.d.

Probably. I think this patch is indeed too specific to my purpose so
I'll just remove it from the series.


Cheers,

    Sylvain

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