Sometime we need to check whether a queue is enabled, e.g for vhost,
we don't want to start the backend for the virtqueues that is not
enabled. So introduce a new method to do this.
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
include/hw/virtio/virtio-bus.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index 7fec9dc929..db20fecf13 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -84,6 +84,10 @@ typedef struct VirtioBusClass {
*/
int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier,
int n, bool assign);
+ /*
+ * is the queue enabled?
+ */
+ bool (*queue_enabled)(DeviceState *d, int n);
/*
* Does the transport have variable vring alignment?
* (ie can it ever call virtio_queue_set_align()?)
--
2.19.1
