On Wed, 21 Aug 2024 00:41:14 +0200
Stefano Brivio <sbrivio@redhat.com> wrote:

> On Thu, 15 Aug 2024 17:50:19 +0200
> Laurent Vivier <lvivier@redhat.com> wrote:
> 
> > This series of patches adds vhost-user support to passt
> > and then allows passt to connect to QEMU network backend using
> > virtqueue rather than a socket.
> > 
> > With QEMU, rather than using to connect:
> > 
> >   -netdev stream,id=s,server=off,addr.type=unix,addr.path=/tmp/passt_1.socket
> > 
> > we will use:
> > 
> >   -chardev socket,id=chr0,path=/tmp/passt_1.socket
> >   -netdev vhost-user,id=netdev0,chardev=chr0
> >   -device virtio-net,netdev=netdev0
> >   -object memory-backend-memfd,id=memfd0,share=on,size=$RAMSIZE
> >   -numa node,memdev=memfd0
> > 
> > The memory backend is needed to share data between passt and QEMU.
> > 
> > Performance comparison between "-netdev stream" and "-netdev vhost-user":  
> 
> By the way, I attached a quick patch adding vhost-user-based tests to
> the usual throughput and latency tests.
> 
> UDP doesn't work (I didn't look into that at all), TCP does.

Complete/fixed patch attached. The only part of UDP that's not working
is actually over IPv6 -- it works over IPv4.

-- 
Stefano