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vhost-user: add VHOST_USER_GET_QUEUE_NUM message

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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>
This commit is contained in:
Yuanhan Liu 2015-09-23 12:19:58 +08:00 • committed by Michael S. Tsirkin
parent d1f8b30ec8
commit e2051e9e00
5 changed files with 39 additions and 1 deletions
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1
include/hw/virtio/vhost.h
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@ -48,6 +48,7 @@ struct vhost_dev {
unsigned long long acked_features;
unsigned long long backend_features;
unsigned long long protocol_features;
unsigned long long max_queues;
bool started;
bool log_enabled;
unsigned long long log_size;