This patch adds 2 new functions: virtqueue_set_broken(): to be called when a virtqueue kick operation fails.
virtqueue_is_broken(): can be called to query the virtqueue state after a host was kicked. Signed-off-by: Heinz Graalfs <[email protected]> --- drivers/virtio/virtio_ring.c | 16 ++++++++++++++++ include/linux/virtio.h | 4 ++++ 2 files changed, 20 insertions(+) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 5217baf..930ee39 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -836,4 +836,20 @@ unsigned int virtqueue_get_vring_size(struct virtqueue *_vq) } EXPORT_SYMBOL_GPL(virtqueue_get_vring_size); +void virtqueue_set_broken(struct virtqueue *_vq) +{ + struct vring_virtqueue *vq = to_vvq(_vq); + + vq->broken = true; +} +EXPORT_SYMBOL_GPL(virtqueue_set_broken); + +bool virtqueue_is_broken(struct virtqueue *_vq) +{ + struct vring_virtqueue *vq = to_vvq(_vq); + + return vq->broken; +} +EXPORT_SYMBOL_GPL(virtqueue_is_broken); + MODULE_LICENSE("GPL"); diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 9ff8645..c09ae2b 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -76,6 +76,10 @@ void *virtqueue_detach_unused_buf(struct virtqueue *vq); unsigned int virtqueue_get_vring_size(struct virtqueue *vq); +void virtqueue_set_broken(struct virtqueue *vq); + +bool virtqueue_is_broken(struct virtqueue *vq); + /** * virtio_device - representation of a device using virtio * @index: unique position on the virtio bus -- 1.8.3.1 _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
