* Helpers.
*/
-#define to_vvq(_vq) container_of(_vq, struct vring_virtqueue, vq)
+#define to_vvq(_vq) container_of_const(_vq, struct vring_virtqueue, vq)
-static bool virtqueue_use_indirect(struct vring_virtqueue *vq,
+static bool virtqueue_use_indirect(const struct vring_virtqueue *vq,
unsigned int total_sg)
{
/*
* unconditionally on data path.
*/
-static bool vring_use_dma_api(struct virtio_device *vdev)
+static bool vring_use_dma_api(const struct virtio_device *vdev)
{
if (!virtio_has_dma_quirk(vdev))
return true;
return false;
}
-size_t virtio_max_dma_size(struct virtio_device *vdev)
+size_t virtio_max_dma_size(const struct virtio_device *vdev)
{
size_t max_segment_size = SIZE_MAX;
*/
static void vring_unmap_one_split_indirect(const struct vring_virtqueue *vq,
- struct vring_desc *desc)
+ const struct vring_desc *desc)
{
u16 flags;
}
static void vring_unmap_extra_packed(const struct vring_virtqueue *vq,
- struct vring_desc_extra *extra)
+ const struct vring_desc_extra *extra)
{
u16 flags;
}
static void vring_unmap_desc_packed(const struct vring_virtqueue *vq,
- struct vring_packed_desc *desc)
+ const struct vring_packed_desc *desc)
{
u16 flags;
* Returns the size of the vring. This is mainly used for boasting to
* userspace. Unlike other operations, this need not be serialized.
*/
-unsigned int virtqueue_get_vring_size(struct virtqueue *_vq)
+unsigned int virtqueue_get_vring_size(const struct virtqueue *_vq)
{
- struct vring_virtqueue *vq = to_vvq(_vq);
+ const struct vring_virtqueue *vq = to_vvq(_vq);
return vq->packed_ring ? vq->packed.vring.num : vq->split.vring.num;
}
}
EXPORT_SYMBOL_GPL(__virtqueue_unbreak);
-bool virtqueue_is_broken(struct virtqueue *_vq)
+bool virtqueue_is_broken(const struct virtqueue *_vq)
{
- struct vring_virtqueue *vq = to_vvq(_vq);
+ const struct vring_virtqueue *vq = to_vvq(_vq);
return READ_ONCE(vq->broken);
}
}
EXPORT_SYMBOL_GPL(__virtio_unbreak_device);
-dma_addr_t virtqueue_get_desc_addr(struct virtqueue *_vq)
+dma_addr_t virtqueue_get_desc_addr(const struct virtqueue *_vq)
{
- struct vring_virtqueue *vq = to_vvq(_vq);
+ const struct vring_virtqueue *vq = to_vvq(_vq);
BUG_ON(!vq->we_own_ring);
}
EXPORT_SYMBOL_GPL(virtqueue_get_desc_addr);
-dma_addr_t virtqueue_get_avail_addr(struct virtqueue *_vq)
+dma_addr_t virtqueue_get_avail_addr(const struct virtqueue *_vq)
{
- struct vring_virtqueue *vq = to_vvq(_vq);
+ const struct vring_virtqueue *vq = to_vvq(_vq);
BUG_ON(!vq->we_own_ring);
}
EXPORT_SYMBOL_GPL(virtqueue_get_avail_addr);
-dma_addr_t virtqueue_get_used_addr(struct virtqueue *_vq)
+dma_addr_t virtqueue_get_used_addr(const struct virtqueue *_vq)
{
- struct vring_virtqueue *vq = to_vvq(_vq);
+ const struct vring_virtqueue *vq = to_vvq(_vq);
BUG_ON(!vq->we_own_ring);
EXPORT_SYMBOL_GPL(virtqueue_get_used_addr);
/* Only available for split ring */
-const struct vring *virtqueue_get_vring(struct virtqueue *vq)
+const struct vring *virtqueue_get_vring(const struct virtqueue *vq)
{
return &to_vvq(vq)->split.vring;
}
void *virtqueue_detach_unused_buf(struct virtqueue *vq);
-unsigned int virtqueue_get_vring_size(struct virtqueue *vq);
+unsigned int virtqueue_get_vring_size(const struct virtqueue *vq);
-bool virtqueue_is_broken(struct virtqueue *vq);
+bool virtqueue_is_broken(const struct virtqueue *vq);
-const struct vring *virtqueue_get_vring(struct virtqueue *vq);
-dma_addr_t virtqueue_get_desc_addr(struct virtqueue *vq);
-dma_addr_t virtqueue_get_avail_addr(struct virtqueue *vq);
-dma_addr_t virtqueue_get_used_addr(struct virtqueue *vq);
+const struct vring *virtqueue_get_vring(const struct virtqueue *vq);
+dma_addr_t virtqueue_get_desc_addr(const struct virtqueue *vq);
+dma_addr_t virtqueue_get_avail_addr(const struct virtqueue *vq);
+dma_addr_t virtqueue_get_used_addr(const struct virtqueue *vq);
int virtqueue_resize(struct virtqueue *vq, u32 num,
void (*recycle)(struct virtqueue *vq, void *buf));
#endif
void virtio_reset_device(struct virtio_device *dev);
-size_t virtio_max_dma_size(struct virtio_device *vdev);
+size_t virtio_max_dma_size(const struct virtio_device *vdev);
#define virtio_device_for_each_vq(vdev, vq) \
list_for_each_entry(vq, &vdev->vqs, list)