@@ -624,6 +624,13 @@ int virtio_queue_get_num(VirtIODevice *vdev, int n)
return vdev->vq[n].vring.num;
}
+int virtio_queue_get_id(VirtQueue *vq)
+{
+ VirtIODevice *vdev = vq->vdev;
+ assert(vq >= &vdev->vq[0] && vq < &vdev->vq[VIRTIO_PCI_QUEUE_MAX]);
+ return vq - &vdev->vq[0];
+}
+
void virtio_queue_notify_vq(VirtQueue *vq)
{
if (vq->vring.desc) {
@@ -229,6 +229,7 @@ target_phys_addr_t virtio_queue_get_ring_size(VirtIODevice *vdev, int n);
uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
+int virtio_queue_get_id(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
void virtio_queue_notify_vq(VirtQueue *vq);
Serializing virtio-scsi requests needs a simple way to get from a VirtQueue to the number of the queue. The virtio_queue_get_id provides this. Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- hw/virtio.c | 7 +++++++ hw/virtio.h | 1 + 2 files changed, 8 insertions(+)