Re: vhost-net patches

[Arnd Bergmann <arnd@arndb.de>]

On Monday 26 October 2009, Shirley Ma wrote:
> On Sun, 2009-10-25 at 11:11 +0200, Michael S. Tsirkin wrote:
> > What is vnet0?
> 
> That's a tap interface. I am binding raw socket to a tap interface and
> it doesn't work. Does it support?


Is the tap device connected to a bridge as you'd normally do
with qemu? That won't work because then the data you send to
the socket will be queued at the /dev/tun chardev.

You can probably connect it like this:

qemu - vhost_net - vnet0 == /dev/tun - qemu

To connect two guests.

I've also used a bidirectional pipe before, to connect two tap
interfaces to each other. However, if you want to connect to
a bridge, the easier interface would be to use a veth pair,
with one end on the bridge and the other end used for the packet
socket.

	Arnd <><