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SubjectRe: [PATCH RFC] tun: experimental zero copy tx support
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On Mon, 2012-05-14 at 21:39 +0300, Michael S. Tsirkin wrote:
> > Hello Mike,
> >
> > Have you tested this patch? I think the difference between macvtap
> and
> > tap is tap forwarding the packet to bridge. The zerocopy is disabled
> in
> > this case.
> >
> > Shirley
>
> Testing in progress, but the patchset I pointed to enables
> zerocopy with bridge.

Hello Mike,

You meant this patch or another patchset for enabling bridge zerocopy?

I remembered we disabled forward skb zerocopy since the user space
program might hold the buffers too long or forever.

In tap/bridge case, when the tx buffers will be released?

Thanks
Shirley



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