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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/net/vhost_net.h
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@ -13,6 +13,7 @@ typedef struct VhostNetOptions {
void *opaque;
} VhostNetOptions;
uint64_t vhost_net_get_max_queues(VHostNetState *net);
struct vhost_net *vhost_net_init(VhostNetOptions *options);
int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, int total_queues);