[PATCH 2/6] virtio: add ability to iterate over vqs

[Michael S. Tsirkin]

For cleanup it's helpful to be able to simply scan all vqs and discard
all data. Add an iterator to do that.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
 include/linux/virtio.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 988c735..fa1b5da 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -157,6 +157,9 @@ int virtio_device_freeze(struct virtio_device *dev);
 int virtio_device_restore(struct virtio_device *dev);
 #endif
 
+#define virtio_device_for_each_vq(vdev, vq) \
+	list_for_each_entry(vq, &vdev->vqs, list)
+
 /**
  * virtio_driver - operations for a virtio I/O driver
  * @driver: underlying device driver (populate name and owner).
-- 
MST