[PATCH V2 00/18] vhost-vDPA multiqueue

[Jason Wang]

Hi All:

This patch implements the multiqueue support for vhost-vDPA. The most
important requirement the control virtqueue support. The virtio-net
and vhost-net core are tweak to support control virtqueue as if what
data queue pairs are done: a dedicated vhost_net device which is
coupled with the NetClientState is intrdouced so most of the existing
vhost codes could be reused with minor changes. With the control
virtqueue, vhost-vDPA are extend to support creating and destroying
multiqueue queue pairs plus the control virtqueue.

Tests are done via the vp_vdpa driver in L1 guest plus vdpa simulator
on L0.

Please reivew.

Changes since V1:

- validating all features that depends on ctrl vq
- typo fixes and commit log tweaks
- fix build errors because max_qps is used before it is introduced

Thanks

Jason Wang (18):
  vhost_net: remove the meaningless assignment in vhost_net_start_one()
  vhost: use unsigned int for nvqs
  vhost_net: do not assume nvqs is always 2
  vhost-vdpa: remove the unnecessary check in vhost_vdpa_add()
  vhost-vdpa: don't cleanup twice in vhost_vdpa_add()
  vhost-vdpa: fix leaking of vhost_net in vhost_vdpa_add()
  vhost-vdpa: tweak the error label in vhost_vdpa_add()
  vhost-vdpa: fix the wrong assertion in vhost_vdpa_init()
  vhost-vdpa: remove the unncessary queue_index assignment
  vhost-vdpa: open device fd in net_init_vhost_vdpa()
  vhost-vdpa: classify one time request
  vhost-vdpa: prepare for the multiqueue support
  vhost-vdpa: let net_vhost_vdpa_init() returns NetClientState *
  net: introduce control client
  vhost-net: control virtqueue support
  virito-net: use "qps" instead of "queues" when possible
  virtio-net: vhost control virtqueue support
  vhost-vdpa: multiqueue support

 hw/net/vhost_net.c             |  48 +++++++---
 hw/net/virtio-net.c            | 165 ++++++++++++++++++---------------
 hw/virtio/vhost-vdpa.c         |  55 ++++++++++-
 include/hw/virtio/vhost-vdpa.h |   1 +
 include/hw/virtio/vhost.h      |   2 +-
 include/hw/virtio/virtio-net.h |   5 +-
 include/net/net.h              |   5 +
 include/net/vhost_net.h        |   7 +-
 net/net.c                      |  24 ++++-
 net/tap.c                      |   1 +
 net/vhost-user.c               |   1 +
 net/vhost-vdpa.c               | 156 ++++++++++++++++++++++++-------
 12 files changed, 332 insertions(+), 138 deletions(-)

-- 
2.25.1