Vhost-pci is a point-to-point based inter-VM communication solution. This patch series implements the vhost-pci-net device setup and emulation. The device is implemented as a virtio device, and it is set up via the vhost-user protocol to get the neessary info (e.g the memory info of the remote VM, vring info).
Currently, only the fundamental functions are implemented. More features, such as MQ and live migration, will be updated in the future. The DPDK PMD of vhost-pci has been posted to the dpdk mailinglist here: http://dpdk.org/ml/archives/dev/2017-November/082615.html v2->v3 changes: 1) static device creation: instead of creating and hot-plugging the device when receiving a vhost-user msg, the device is not created via the qemu booting command line. 2) remove vqs: rq and ctrlq are removed in this version. - receive vq: the receive vq is not needed anymore. The PMD directly shares the remote txq and rxq - grab from remote txq to receive packets, and put to rxq to send packets. - ctrlq: the ctrlq is replaced by the first 4KB metadata area of the device Bar-2. 3) simpler implementation: the entire implementation has been tailored from ~1800 LOC to ~850 LOC. Wei Wang (7): vhost-user: share the vhost-user protocol related structures vhost-pci-net: add vhost-pci-net virtio/virtio-pci.c: add vhost-pci-net-pci vhost-pci-slave: add vhost-pci slave implementation vhost-user: VHOST_USER_SET_VHOST_PCI msg vhost-pci-slave: handle VHOST_USER_SET_VHOST_PCI virtio/vhost.c: vhost-pci needs remote gpa hw/net/Makefile.objs | 2 +- hw/net/vhost_net.c | 37 +++ hw/net/vhost_pci_net.c | 137 +++++++++++ hw/virtio/Makefile.objs | 1 + hw/virtio/vhost-pci-slave.c | 310 +++++++++++++++++++++++++ hw/virtio/vhost-user.c | 117 ++-------- hw/virtio/vhost.c | 63 +++-- hw/virtio/virtio-pci.c | 55 +++++ hw/virtio/virtio-pci.h | 14 ++ include/hw/pci/pci.h | 1 + include/hw/virtio/vhost-backend.h | 2 + include/hw/virtio/vhost-pci-net.h | 42 ++++ include/hw/virtio/vhost-pci-slave.h | 12 + include/hw/virtio/vhost-user.h | 108 +++++++++ include/hw/virtio/vhost.h | 2 + include/net/vhost_net.h | 2 + include/standard-headers/linux/vhost_pci_net.h | 65 ++++++ include/standard-headers/linux/virtio_ids.h | 1 + 18 files changed, 851 insertions(+), 120 deletions(-) create mode 100644 hw/net/vhost_pci_net.c create mode 100644 hw/virtio/vhost-pci-slave.c create mode 100644 include/hw/virtio/vhost-pci-net.h create mode 100644 include/hw/virtio/vhost-pci-slave.h create mode 100644 include/hw/virtio/vhost-user.h create mode 100644 include/standard-headers/linux/vhost_pci_net.h -- 2.7.4
