Hello Xiaohui,

On Fri, 2010-07-30 at 16:53 +0800, Xin, Xiaohui wrote:
> >Since vhost-net already supports macvtap/tun backends, do you think
> >whether it's better to implement zero copy in macvtap/tun than
> inducing
> >a new media passthrough device here?
> >
> 
> I'm not sure if there will be more duplicated code in the kernel. 

I think it should be less duplicated code in the kernel if we use
macvtap to support what media passthrough driver here. Since macvtap has
support virtio_net head and offloading already, the only missing func is
zero copy. Also QEMU supports macvtap, we just need add a zero copy flag
in option.

Thanks
Shirley