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| author | Heinz Graalfs <graalfs@linux.vnet.ibm.com> | 2013-10-29 09:40:19 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-10-29 11:28:17 +1030 |
| commit | b3b32c94133621c9ba7e4c8f29ec7533f2f4d8ec (patch) | |
| tree | d24065656240c707ec76d6932e2f00554dc52713 | |
| parent | 53c18c990644174935ca93e50d7ebd05e04cb9ee (diff) | |
| download | op-kernel-dev-b3b32c94133621c9ba7e4c8f29ec7533f2f4d8ec.zip op-kernel-dev-b3b32c94133621c9ba7e4c8f29ec7533f2f4d8ec.tar.gz | |
virtio_ring: add new function virtqueue_is_broken()
Add new function virtqueue_is_broken(). Callers of virtqueue_get_buf()
should check for a broken queue.
Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 8 | ||||
| -rw-r--r-- | include/linux/virtio.h | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index b471427..f477775 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -851,4 +851,12 @@ unsigned int virtqueue_get_vring_size(struct virtqueue *_vq) } EXPORT_SYMBOL_GPL(virtqueue_get_vring_size); +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 9b4de15..e4abb84 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -73,6 +73,8 @@ void *virtqueue_detach_unused_buf(struct virtqueue *vq); unsigned int virtqueue_get_vring_size(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 |
