[Devel] Re: [PATCHSET] 2.6.20-lxc8

[Eric W. Biederman]

Kirill Korotaev <dev at sw.ru> writes:

> Benjamin,
>
> checksumming can be optimized out as well.
> We had an experimental patch for OpenVZ venet device, which adds
> NETIF_F_LLTX | NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA
> features to venet device and avoids additional checksumming where possible
> (moving RX/TX checksum calculation to hardware).
>
> So I guess this is doable in future as well.

I think I have the checksum bits settable in software with etun already.  If not
it shouldn't be to hard to add.

I don't default to that because depending on your configuration it might not
be safe.  In particular I think when you are using ethernet bridging we
need to do the packet checksum immediately off the wire.

Eric
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