Re: [RFC] Discuss about an new idea "Vsock over Virtio-net"

Michael S. Tsirkin
2018-11-15T07:04:52Z

On Thu, Nov 15, 2018 at 11:56:03AM +0800, jiangyiwen wrote:
> Hi Stefan, Michael, Jason and everyone,
>
> Several days ago, I discussed with jason about "Vsock over Virtio-net".
> This idea has two advantages:
> First, it can use many great features of virtio-net, like batching,
> mergeable rx buffer and multiqueue, etc.
> Second, it can reduce many duplicate codes and make it easy to be
> maintained.

I'm not sure I get the motivation. Which features of
virtio net are relevant to vsock? The ones that you mention
all seem to be mostly of use to the networking stack.

> Before the implement, I want to discuss with everyone again, and
> want to know everyone's suggestions.
>
> After the discussion, based on this point I will try to implement
> this idea, but I am not familiar with the virtio-net, that is a
> pity. :(
>
> -------------------------Simple idea------------------------------
>
> 1. The packet layout will become as follows:
>
> +---------------------------------+
> | Virtio-net header |
> |(struct virtio_net_hdr_mrg_rxbuf)|

Which fields in virtio_net_hdr_mrg_rxbuf are of interest to vsock?

> +---------------------------------+
> | Vsock header |
> | (struct virtio_vsock_hdr) |
> +---------------------------------+
> | payload |
> | (until end of packet) |
> +---------------------------------+

Thanks,
--
MST