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.