diff options
| author | Changchun Ouyang <changchun.ouyang@intel.com> | 2015-09-23 12:20:01 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-09-24 16:27:53 +0300 |
| commit | 7263a0ad7899994b719ebed736a1119cc2e08110 (patch) | |
| tree | 6e832134bdf7c95b2a8ba0e9f03b47c0f7a216b5 /docs | |
| parent | b931bfbf042983f311b3b09894d8030b2755a638 (diff) | |
vhost-user: add a new message to disable/enable a specific virt queue.
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 <changchun.ouyang@intel.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/specs/vhost-user.txt | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt index cfc9d411ff..4eadad1d6b 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 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. |