diff options
Diffstat (limited to 'include/linux/virtio.h')
| -rw-r--r-- | include/linux/virtio.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/virtio.h b/include/linux/virtio.h index aff5b4f74041..710885749605 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -51,6 +51,13 @@ struct virtqueue { * This re-enables callbacks; it returns "false" if there are pending * buffers in the queue, to detect a possible race between the driver * checking for more work, and enabling callbacks. + * virtqueue_enable_cb_delayed: restart callbacks after disable_cb. + * vq: the struct virtqueue we're talking about. + * This re-enables callbacks but hints to the other side to delay + * interrupts until most of the available buffers have been processed; + * it returns "false" if there are many pending buffers in the queue, + * to detect a possible race between the driver checking for more work, + * and enabling callbacks. * virtqueue_detach_unused_buf: detach first unused buffer * vq: the struct virtqueue we're talking about. * Returns NULL or the "data" token handed to add_buf @@ -86,6 +93,8 @@ void virtqueue_disable_cb(struct virtqueue *vq); bool virtqueue_enable_cb(struct virtqueue *vq); +bool virtqueue_enable_cb_delayed(struct virtqueue *vq); + void *virtqueue_detach_unused_buf(struct virtqueue *vq); /** |