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virtio: Use const pointer for vu_dev

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We don't modify the structure in some virtio functions.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Laurent Vivier 2024-12-19 12:13:52 +01:00 committed by Stefano Brivio
parent 324233bd9b
commit 898e853635
4 changed files with 12 additions and 8 deletions
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14
virtio.c
View File

@ -92,7 +92,8 @@
*
* Return: virtual address in our address space of the guest physical address
*/
static void *vu_gpa_to_va(struct vu_dev *dev, uint64_t *plen, uint64_t guest_addr)
static void *vu_gpa_to_va(const struct vu_dev *dev, uint64_t *plen,
uint64_t guest_addr)
{
unsigned int i;
@ -210,7 +211,8 @@ static void virtqueue_get_head(const struct vu_virtq *vq,
*
* Return: -1 if there is an error, 0 otherwise
*/
static int virtqueue_read_indirect_desc(struct vu_dev *dev, struct vring_desc *desc,
static int virtqueue_read_indirect_desc(const struct vu_dev *dev,
struct vring_desc *desc,
uint64_t addr, size_t len)
{
uint64_t read_len;
@ -390,7 +392,7 @@ static inline void vring_set_avail_event(const struct vu_virtq *vq,
*
* Return: false on error, true otherwise
*/
static bool virtqueue_map_desc(struct vu_dev *dev,
static bool virtqueue_map_desc(const struct vu_dev *dev,
unsigned int *p_num_sg, struct iovec *iov,
unsigned int max_num_sg,
uint64_t pa, size_t sz)
@ -426,7 +428,8 @@ static bool virtqueue_map_desc(struct vu_dev *dev,
*
* Return: -1 if there is an error, 0 otherwise
*/
static int vu_queue_map_desc(struct vu_dev *dev, struct vu_virtq *vq, unsigned int idx,
static int vu_queue_map_desc(const struct vu_dev *dev,
struct vu_virtq *vq, unsigned int idx,
struct vu_virtq_element *elem)
{
const struct vring_desc *desc = vq->vring.desc;
@ -504,7 +507,8 @@ static int vu_queue_map_desc(struct vu_dev *dev, struct vu_virtq *vq, unsigned i
*
* Return: -1 if there is an error, 0 otherwise
*/
int vu_queue_pop(struct vu_dev *dev, struct vu_virtq *vq, struct vu_virtq_element *elem)
int vu_queue_pop(const struct vu_dev *dev, struct vu_virtq *vq,
struct vu_virtq_element *elem)
{
unsigned int head;
int ret;

2
virtio.h
View File

@ -170,7 +170,7 @@ static inline bool vu_has_protocol_feature(const struct vu_dev *vdev,
bool vu_queue_empty(struct vu_virtq *vq);
void vu_queue_notify(const struct vu_dev *dev, struct vu_virtq *vq);
int vu_queue_pop(struct vu_dev *dev, struct vu_virtq *vq,
int vu_queue_pop(const struct vu_dev *dev, struct vu_virtq *vq,
struct vu_virtq_element *elem);
void vu_queue_detach_element(struct vu_virtq *vq);
void vu_queue_unpop(struct vu_virtq *vq);

2
vu_common.c
View File

@ -73,7 +73,7 @@ void vu_init_elem(struct vu_virtq_element *elem, struct iovec *iov, int elem_cnt
*
* Return: number of elements used to contain the frame
*/
int vu_collect(struct vu_dev *vdev, struct vu_virtq *vq,
int vu_collect(const struct vu_dev *vdev, struct vu_virtq *vq,
struct vu_virtq_element *elem, int max_elem,
size_t size, size_t *frame_size)
{

2
vu_common.h
View File

@ -46,7 +46,7 @@ static inline void vu_set_element(struct vu_virtq_element *elem,
void vu_init_elem(struct vu_virtq_element *elem, struct iovec *iov,
int elem_cnt);
int vu_collect(struct vu_dev *vdev, struct vu_virtq *vq,
int vu_collect(const struct vu_dev *vdev, struct vu_virtq *vq,
struct vu_virtq_element *elem, int max_elem, size_t size,
size_t *frame_size);
void vu_set_vnethdr(const struct vu_dev *vdev,