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[Qemu-devel] [PATCH 0/6 v8] vhost-user multiple queue support
From: |
Yuanhan Liu |
Subject: |
[Qemu-devel] [PATCH 0/6 v8] vhost-user multiple queue support |
Date: |
Mon, 14 Sep 2015 16:58:06 +0800 |
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_ENABLE,
for enabling/disabling a specific virt queue.
Both of the 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 1-4 are all prepare works for actually enabling multiple queue.
Patch 5 is the major patch for enabling multiple queue, which also tries
to 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 a hidden bug.
Patch 6 introduces the VHOST_USER_SET_VRING_ENABLE message, to enable
or disable a specific vring.
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.
v8: - set vq_index for vhost-user inside vhost_net_init() based on the
net->nc->queue_index field. Per Jason Wang suggested, we can't
move the vhost_net_set_vq_index() ahead to inside of vhost_net_init(),
as it will break vhost-kernel multiple queue support(with tap).
And that's why it's one patch less in this version.
- Rename VHOST_USER_SET_VRING_FLAG to VHOST_USER_SET_VRING_ENABLE.
Thanks.
--yliu
---
Changchun Ouyang (2):
vhost-user: add multiple queue support
vhost-user: add a new message to disable/enable a specific virt queue.
Michael S. Tsirkin (1):
vhost-user: add protocol feature negotiation
Yuanhan Liu (3):
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
docs/specs/vhost-user.txt | 75 +++++++++++++++++++-
hw/net/vhost_net.c | 34 ++++++++-
hw/net/virtio-net.c | 8 +++
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 | 3 +
linux-headers/linux/vhost.h | 2 +-
net/vhost-user.c | 140 +++++++++++++++++++++++++++-----------
qapi-schema.json | 6 +-
qemu-options.hx | 5 +-
tests/vhost-user-test.c | 2 +-
13 files changed, 350 insertions(+), 70 deletions(-)
--
1.9.0
- [Qemu-devel] [PATCH 0/6 v8] vhost-user multiple queue support,
Yuanhan Liu <=
- [Qemu-devel] [PATCH 2/6] vhost-user: add protocol feature negotiation, Yuanhan Liu, 2015/09/14
- [Qemu-devel] [PATCH 1/6] vhost-user: use VHOST_USER_XXX macro for switch statement, Yuanhan Liu, 2015/09/14
- [Qemu-devel] [PATCH 3/6] vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE, Yuanhan Liu, 2015/09/14
- [Qemu-devel] [PATCH 4/6] vhost-user: add VHOST_USER_GET_QUEUE_NUM message, Yuanhan Liu, 2015/09/14
- [Qemu-devel] [PATCH 6/6] vhost-user: add a new message to disable/enable a specific virt queue., Yuanhan Liu, 2015/09/14
- [Qemu-devel] [PATCH 5/6] vhost-user: add multiple queue support, Yuanhan Liu, 2015/09/14