Re: [RFC v3 8/8] vhost-vdpa: introduce vhost-vdpa net client

[Jason Wang]

On 2020/6/3 下午4:19, Cindy Lu wrote:
> > > +static void vhost_vdpa_cleanup(NetClientState *nc)
> > > +{
> > > +    VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
> > > +
> > > +    if (s->vhost_net) {
> > > +        vhost_net_cleanup(s->vhost_net);
> > > +        g_free(s->vhost_net);
> > > +        s->vhost_net = NULL;
> > > +    }
> > > +
> > > +    qemu_purge_queued_packets(nc);
> > Why this is needed?
> >
> > Thanks
> This is to clean the packet in the queue while the vdpa remove,  I
> will double check this part


Note we don't have a software backup driver for qemu currently (we 
probably need one in the future).

So we can't fallback into userspace which means the packet can not be 
queued by qemu.

Thanks