virtqueue.h File Reference

#include <stdint.h>
#include <stddef.h>
#include <zephyr/kernel.h>

Go to the source code of this file.

Data Structures
struct	virtq_desc
	virtqueue descriptor More...
struct	virtq_avail
	virtqueue available ring More...
struct	virtq_used_elem
	used descriptor chain More...
struct	virtq_used
	virtqueue used ring More...
struct	virtq_receive_callback_entry
	callback descriptor More...
struct	virtq
	virtqueue More...
struct	virtq_buf
	single buffer passed to virtq_add_buffer_chain More...

Macros
#define	VIRTQ_DESC_F_NEXT   1
	used in virtq_desc::flags, enables chaining descriptor via virtq_desc::next
#define	VIRTQ_DESC_F_WRITE   2
	used in virtq_desc::flags, makes descriptor device writeable

Typedefs
typedef void(*	virtq_receive_callback) (void *opaque, uint32_t used_len)
	receive callback function type

Functions
int	virtq_create (struct virtq *v, size_t size)
	creates virtqueue
void	virtq_free (struct virtq *v)
	frees virtqueue
int	virtq_add_buffer_chain (struct virtq *v, struct virtq_buf *bufs, uint16_t bufs_size, uint16_t device_readable_count, virtq_receive_callback cb, void *cb_opaque, k_timeout_t timeout)
	adds chain of buffers to the virtqueue
void	virtq_add_free_desc (struct virtq *v, uint16_t desc_idx)
	adds free descriptor back
int	virtq_get_free_desc (struct virtq *v, uint16_t *desc_idx, k_timeout_t timeout)
	gets next free descriptor