On Thu, Mar 5, 2015 at 2:12 PM, Fam Zheng <f...@redhat.com> wrote:
On Thu, 03/05 13:48, Jason Wang wrote:
This patch introduces a helper that can get the queue index of a
VirtQueue. This is useful when traversing the list of VirtQueues.
Cc: Anthony Liguori <aligu...@amazon.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
hw/virtio/virtio.c | 5 +++++
include/hw/virtio/virtio.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 5e6b879..bd32518 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -725,6 +725,11 @@ hwaddr virtio_queue_get_addr(VirtIODevice
*vdev, int n)
return vdev->vq[n].pa;
}
+int virtio_queue_get_index(VirtIODevice *vdev, VirtQueue *vq)
+{
+ return vq - vdev->vq;
Probably assert the return value is within [0,
virtio_get_queue_max(vdev))?
Fam
Not sure this is necessary. If we add one such here, we probably needs
to add more elsewhere.
