virtio_ring.h File Reference

#include <stdint.h>

Go to the source code of this file.

Classes
struct	vring_desc
struct	vring_avail
struct	vring_used_elem
struct	vring_used
struct	vring

Macros
#define	VRING_DESC_F_NEXT   1
#define	VRING_DESC_F_WRITE   2
#define	VRING_DESC_F_INDIRECT   4
#define	VRING_USED_F_NO_NOTIFY   1
#define	VRING_AVAIL_F_NO_INTERRUPT   1
#define	VIRTIO_RING_F_INDIRECT_DESC   28
#define	VIRTIO_RING_F_EVENT_IDX   29
#define	vring_used_event(vr)   ((vr)->avail->ring[(vr)->num])
#define	vring_avail_event(vr)   (*(uint16_t *)&(vr)->used->ring[(vr)->num])

Functions
static void	vring_init (struct vring *vr, unsigned int num, void *p, unsigned long align)
static unsigned	vring_size (unsigned int num, unsigned long align)
static int	vring_need_event (uint16_t event_idx, uint16_t new_idx, uint16_t old)

Macro Definition Documentation

#define VIRTIO_RING_F_EVENT_IDX   29

Definition at line 59 of file virtio_ring.h.

#define VIRTIO_RING_F_INDIRECT_DESC   28

Definition at line 53 of file virtio_ring.h.

#define vring_avail_event

(

vr

)

(*(uint16_t *)&(vr)->used->ring[(vr)->num])

Definition at line 130 of file virtio_ring.h.

#define VRING_AVAIL_F_NO_INTERRUPT   1

Definition at line 50 of file virtio_ring.h.

#define VRING_DESC_F_INDIRECT   4

Definition at line 41 of file virtio_ring.h.

#define VRING_DESC_F_NEXT   1

Definition at line 37 of file virtio_ring.h.

Referenced by VirtDescriptor::hasNext().

#define VRING_DESC_F_WRITE   2

Definition at line 39 of file virtio_ring.h.

Referenced by VirtDescriptor::isOutgoing().

#define vring_used_event

(

vr

)

((vr)->avail->ring[(vr)->num])

Definition at line 129 of file virtio_ring.h.

#define VRING_USED_F_NO_NOTIFY   1

Definition at line 46 of file virtio_ring.h.

Function Documentation

static void vring_init ( struct vring *  vr, unsigned int  num, void *  p, unsigned long  align  )

inlinestatic

Definition at line 132 of file virtio_ring.h.

References vring::avail, vring::desc, vring::num, vring_avail::ring, and vring::used.

static int vring_need_event ( uint16_t  event_idx, uint16_t  new_idx, uint16_t  old  )

inlinestatic

Definition at line 153 of file virtio_ring.h.

static unsigned vring_size ( unsigned int  num, unsigned long  align  )

inlinestatic

Definition at line 142 of file virtio_ring.h.