diff options
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 68b9136847a..c7a2c208f6e 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -21,6 +21,7 @@ #include <linux/virtio_config.h> #include <linux/device.h> #include <linux/slab.h> +#include <linux/module.h> /* virtio guest is communicating with a virtual "device" that actually runs on * a host processor. Memory barriers are used to control SMP effects. */ @@ -529,4 +530,14 @@ void vring_transport_features(struct virtio_device *vdev) } EXPORT_SYMBOL_GPL(vring_transport_features); +/* return the size of the vring within the virtqueue */ +unsigned int virtqueue_get_vring_size(struct virtqueue *_vq) +{ + + struct vring_virtqueue *vq = to_vvq(_vq); + + return vq->vring.num; +} +EXPORT_SYMBOL_GPL(virtqueue_get_vring_size); + MODULE_LICENSE("GPL"); |