Re: [Qemu-devel] [PATCH 1/1] net: fix queue's purge on VM stop

[Stefan Hajnoczi]

On Wed, Jun 03, 2015 at 09:56:57AM +0200, Thibaut Collet wrote:
> thanks for your point, I did not notice the problem of the lost of ARP
> announce by discarding the message.
> So I must rewrite my patch to define a queue to transmit the ARP announce
> to the guest. Is it the proper solution?

I'm not sure if vhost-user is designed to support live migration in the
first place.  It's only worth adding ARP packet injection support if
live migration is supported with vhost-user.

You don't need to define a queue, instead implement the .receive()
function for vhost-user and invoke a new virtio-net-specific vhost-user
request type that injects a packet (independent of the tx virtqueue).

Stefan

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