Re: [Qemu-devel] Re: [PATCH 9/9] Introduce VLANClientState::cleanup()

[Avi Kivity]

Paul Brook wrote:
> On Thursday 30 April 2009, Avi Kivity wrote:
>   
> > Paul Brook wrote:
> >     
> > > > Sure, you can short-ciruit the case where you have a pair of devices,
> > > > but then you need to revoke posted receive descriptors.
> > > >         
> > > Isn't the same true with a point-point API? When you add a third device
> > > to the vlan you're going to have to break the tap-guest link, and insert
> > > a proxy in the middle.
> > >       
> > I thought with a point-to-point API, you would not actually be inserting
> > any third device.
> >     
>
> That's a fair chunk of functionality you just lost then.
>   

True, but is it actually useful?

Short-circuiting two guest devices probably isn't.  Adding host devices 
(like recording packets) might be.


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