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| author | Yuanhan Liu <yuanhan.liu@linux.intel.com> | 2015-09-23 12:19:58 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-09-24 16:27:52 +0300 |
| commit | e2051e9e004649b53af4db34f78c689fb44e075b (patch) | |
| tree | 5621451188099ce6e8d2df7dcc81f0d2401fd166 /docs | |
| parent | d1f8b30ec8dde0318fd1b98d24a64926feae9625 (diff) | |
| download | hqemu-e2051e9e004649b53af4db34f78c689fb44e075b.zip hqemu-e2051e9e004649b53af4db34f78c689fb44e075b.tar.gz | |
vhost-user: add VHOST_USER_GET_QUEUE_NUM message
This is for querying how many queues the backend supports if it has mq
support(when VHOST_USER_PROTOCOL_F_MQ flag is set from the quried
protocol features).
vhost_net_get_max_queues() is the interface to export that value, and
to tell if the backend supports # of queues user requested, which is
done in the following patch.
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>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/specs/vhost-user.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt index ccbbcbb..43db9b4 100644 --- a/docs/specs/vhost-user.txt +++ b/docs/specs/vhost-user.txt @@ -301,3 +301,14 @@ Message types Bits (0-7) of the payload contain the vring index. Bit 8 is the invalid FD flag. This flag is set when there is no file descriptor in the ancillary data. + + * VHOST_USER_GET_QUEUE_NUM + + Id: 17 + Equivalent ioctl: N/A + Master payload: N/A + Slave payload: u64 + + 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. |
