[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v10 7/7] vhost-user: add a new message to disabl
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH v10 7/7] vhost-user: add a new message to disable/enable a specific virt queue. |
Date: |
Tue, 22 Sep 2015 08:47:04 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 |
On 09/18/2015 08:58 AM, Yuanhan Liu wrote:
> From: Changchun Ouyang <address@hidden>
>
> Add a new message, VHOST_USER_SET_VRING_ENABLE, to enable or disable
> a specific virt queue, which is similar to attach/detach queue for
> tap device.
>
> virtio driver on guest doesn't have to use max virt queue pair, it
> could enable any number of virt queue ranging from 1 to max virt
> queue pair.
>
> Signed-off-by: Changchun Ouyang <address@hidden>
> Signed-off-by: Yuanhan Liu <address@hidden>
> ---
> docs/specs/vhost-user.txt | 12 +++++++++++-
> hw/net/vhost_net.c | 18 ++++++++++++++++++
> hw/net/virtio-net.c | 8 ++++++++
> hw/virtio/vhost-user.c | 19 +++++++++++++++++++
> include/hw/virtio/vhost-backend.h | 2 ++
> include/net/vhost_net.h | 2 ++
> 6 files changed, 60 insertions(+), 1 deletion(-)
>
> diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt
> index cfc9d41..a5f1c31 100644
> --- a/docs/specs/vhost-user.txt
> +++ b/docs/specs/vhost-user.txt
> @@ -148,7 +148,9 @@ VHOST_USER_GET_PROTOCOL_FEATURES. Master should stop when
> the number of
> requested queues is bigger than that.
>
> As all queues share one connection, the master uses a unique index for each
> -queue in the sent message to identify a specified queue.
> +queue in the sent message to identify a specified queue. One queue pairs
s/pairs/pair/
> +is enabled initially. More queues are enabled dynamically, by sending
> +message VHOST_USER_SET_VRING_ENABLE.
>
> Message types
> -------------
> @@ -327,3 +329,11 @@ Message types
> Query how many queues the backend supports. This request should be
> sent only when VHOST_USER_PROTOCOL_F_MQ is set in quried protocol
> features by VHOST_USER_GET_PROTOCOL_FEATURES.
> +
> + * VHOST_USER_SET_VRING_ENABLE
> +
> + Id: 18
> + Equivalent ioctl: N/A
> + Master payload: vring state description
> +
> + Signal slave to enable or disable corresponding vring.
Does there need to be any QMP control to manually change a given queue,
or is it all used under the hood with no need for management apps to
care other than their initial request of max queues?
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
- [Qemu-devel] [PATCH v10 0/7] vhost-user multiple queue support, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 3/7] vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 1/7] vhost-user: use VHOST_USER_XXX macro for switch statement, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 2/7] vhost-user: add protocol feature negotiation, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 4/7] vhost-user: add VHOST_USER_GET_QUEUE_NUM message, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 5/7] vhost: introduce vhost_backend_get_vq_index method, Yuanhan Liu, 2015/09/18
- [Qemu-devel] [PATCH v10 7/7] vhost-user: add a new message to disable/enable a specific virt queue., Yuanhan Liu, 2015/09/18
- Re: [Qemu-devel] [PATCH v10 7/7] vhost-user: add a new message to disable/enable a specific virt queue.,
Eric Blake <=
[Qemu-devel] [PATCH v10 6/7] vhost-user: add multiple queue support, Yuanhan Liu, 2015/09/18
Re: [Qemu-devel] [PATCH v10 6/7] vhost-user: add multiple queue support, Michael S. Tsirkin, 2015/09/22
Re: [Qemu-devel] [PATCH v10 6/7] vhost-user: add multiple queue support, Eric Blake, 2015/09/22