[Qemu-devel] [PATCH 0/7 v7] vhost-user multiple queue support

[Yuanhan Liu <yuanhan.liu@linux.intel.com>]

Hi,

Here is the updated patch set for enabling vhost-user multiple queue.

This patch set introduces 2 more vhost user messages: VHOST_USER_GET_QUEUE_NUM,
for querying how many queues the backend supports, and VHOST_USER_SET_VRING_FLAG,
for enabling/disabling a specific virt queue.

Both of th two new messages are treated as vhost protocol extension,
and that's why Michaels's patch "vhost-user: add protocol feature
negotiation" is also included here.

Patch 1-5 are all prepare work for actually enabling multiple queue.

Patch 6 is the key patch for enabling multiple queue, which address
two major concerns from Michael: no feedback from backend if it can't
support # of requested queues, and all messages are sent N time. It
also fixes an hidden bug.

Patch 7 introduces the VHOST_USER_SET_VRING_FLAG message.

Note that I haven't done any formal test yet, it just passes build
test and basic functional test, such as it does exit when backend
doesn't support # of requested queues. Here I sent it out just for
more comments, and for avoiding spending too much effort on the wrong
track.

Thanks.


    --yliu


---
Changchun Ouyang (1):
  vhost-user: add a new message to disable/enable a specific virt queue.

Michael S. Tsirkin (1):
  vhost-user: add protocol feature negotiation

Ouyang Changchun (1):
  vhost-user: add multiple queue support

Yuanhan Liu (4):
  vhost-user: use VHOST_USER_XXX macro for switch statement
  vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE
  vhost-user: add VHOST_USER_GET_QUEUE_NUM message
  vhost_net: move vhost_net_set_vq_index ahead at vhost_net_init

 docs/specs/vhost-user.txt         |  75 +++++++++++++++++++-
 hw/net/vhost_net.c                |  45 +++++++++---
 hw/net/virtio-net.c               |   2 +
 hw/virtio/vhost-user.c            | 140 ++++++++++++++++++++++++++++++++------
 include/hw/virtio/vhost-backend.h |   2 +
 include/hw/virtio/vhost.h         |   2 +
 include/net/net.h                 |   1 +
 include/net/vhost_net.h           |   2 +
 linux-headers/linux/vhost.h       |   2 +-
 net/vhost-user.c                  | 135 +++++++++++++++++++++++++-----------
 qapi-schema.json                  |   6 +-
 qemu-options.hx                   |   5 +-
 tests/vhost-user-test.c           |   2 +-
 13 files changed, 340 insertions(+), 79 deletions(-)

-- 
1.9.0