[RFC 03/10] virtio: Add virtio_queue_get_idx

[Eugenio Pérez]

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 include/hw/virtio/virtio.h | 2 ++
 hw/virtio/virtio.c         | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 9988c6d5c9..9013c03424 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -399,6 +399,8 @@ static inline bool virtio_device_disabled(VirtIODevice 
*vdev)
     return unlikely(vdev->disabled || vdev->broken);
 }
 
+unsigned virtio_queue_get_idx(const VirtIODevice *vdev, const VirtQueue *vq);
+
 bool virtio_legacy_allowed(VirtIODevice *vdev);
 bool virtio_legacy_check_disabled(VirtIODevice *vdev);
 
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index ebb780fb42..3d14b0ef74 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -500,6 +500,11 @@ void virtio_queue_set_notification(VirtQueue *vq, int 
enable)
     }
 }
 
+unsigned virtio_queue_get_idx(const VirtIODevice *vdev, const VirtQueue *vq)
+{
+    return vq - vdev->vq;
+}
+
 int virtio_queue_ready(VirtQueue *vq)
 {
     return vq->vring.avail != 0;
-- 
2.27.0