On Thu, 15 Aug 2024 17:50:19 +0200 Laurent Vivier <lvivier(a)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. -- Stefano