vhost.h File Reference

#include <linux/eventfd.h>
#include <linux/vhost.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/poll.h>
#include <linux/file.h>
#include <linux/skbuff.h>
#include <linux/uio.h>
#include <linux/virtio_config.h>
#include <linux/virtio_ring.h>
#include <linux/atomic.h>

Go to the source code of this file.

Data Structures
struct	vhost_work
struct	vhost_poll
struct	vhost_log
struct	vhost_ubuf_ref
struct	vhost_virtqueue
struct	vhost_dev

Macros
#define	VHOST_DMA_DONE_LEN   1
#define	VHOST_DMA_CLEAR_LEN   0
#define	vq_err(vq, fmt,...)

Typedefs
typedef void(*	vhost_work_fn_t )(struct vhost_work *work)

Enumerations
enum	{ VHOST_FEATURES, VHOST_NET_FEATURES }

Functions
void	vhost_work_init (struct vhost_work *work, vhost_work_fn_t fn)
void	vhost_work_queue (struct vhost_dev *dev, struct vhost_work *work)
void	vhost_poll_init (struct vhost_poll *poll, vhost_work_fn_t fn, unsigned long mask, struct vhost_dev *dev)
void	vhost_poll_start (struct vhost_poll *poll, struct file *file)
void	vhost_poll_stop (struct vhost_poll *poll)
void	vhost_poll_flush (struct vhost_poll *poll)
void	vhost_poll_queue (struct vhost_poll *poll)
struct vhost_ubuf_ref *	vhost_ubuf_alloc (struct vhost_virtqueue *, bool zcopy)
void	vhost_ubuf_put (struct vhost_ubuf_ref *)
void	vhost_ubuf_put_and_wait (struct vhost_ubuf_ref *)
long	vhost_dev_init (struct vhost_dev *, struct vhost_virtqueue *vqs, int nvqs)
long	vhost_dev_check_owner (struct vhost_dev *)
long	vhost_dev_reset_owner (struct vhost_dev *)
void	vhost_dev_cleanup (struct vhost_dev *, bool locked)
long	vhost_dev_ioctl (struct vhost_dev *, unsigned int ioctl, unsigned long arg)
int	vhost_vq_access_ok (struct vhost_virtqueue *vq)
int	vhost_log_access_ok (struct vhost_dev *)
int	vhost_get_vq_desc (struct vhost_dev *, struct vhost_virtqueue *, struct iovec iov[], unsigned int iov_count, unsigned int *out_num, unsigned int *in_num, struct vhost_log *log, unsigned int *log_num)
void	vhost_discard_vq_desc (struct vhost_virtqueue *, int n)
int	vhost_init_used (struct vhost_virtqueue *)
int	vhost_add_used (struct vhost_virtqueue *, unsigned int head, int len)
int	vhost_add_used_n (struct vhost_virtqueue *, struct vring_used_elem *heads, unsigned count)
void	vhost_add_used_and_signal (struct vhost_dev *, struct vhost_virtqueue *, unsigned int id, int len)
void	vhost_add_used_and_signal_n (struct vhost_dev *, struct vhost_virtqueue *, struct vring_used_elem *heads, unsigned count)
void	vhost_signal (struct vhost_dev *, struct vhost_virtqueue *)
void	vhost_disable_notify (struct vhost_dev *, struct vhost_virtqueue *)
bool	vhost_enable_notify (struct vhost_dev *, struct vhost_virtqueue *)
int	vhost_log_write (struct vhost_virtqueue *vq, struct vhost_log *log, unsigned int log_num, u64 len)
void	vhost_zerocopy_callback (struct ubuf_info *)
int	vhost_zerocopy_signal_used (struct vhost_virtqueue *vq)
void	vhost_enable_zcopy (int vq)

Macro Definition Documentation

#define VHOST_DMA_CLEAR_LEN   0

Definition at line 19 of file vhost.h.

#define VHOST_DMA_DONE_LEN   1

Definition at line 18 of file vhost.h.

#define vq_err	(		vq,
			fmt,
			...
	)

Value:

do {                                  \
        pr_debug(pr_fmt(fmt), ##__VA_ARGS__);       \
        if ((vq)->error_ctx)                               \
                eventfd_signal((vq)->error_ctx, 1);\
    } while (0)

Definition at line 197 of file vhost.h.

Typedef Documentation

typedef void(* vhost_work_fn_t)(struct vhost_work *work)

Definition at line 24 of file vhost.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

VHOST_FEATURES
VHOST_NET_FEATURES

Definition at line 203 of file vhost.h.

Function Documentation

int vhost_add_used	(	struct vhost_virtqueue *	,
		unsigned int	head,
		int	len
	)

Definition at line 1338 of file vhost.c.

void vhost_add_used_and_signal	(	struct vhost_dev *	,
		struct vhost_virtqueue *	,
		unsigned int	id,
		int	len
	)

Definition at line 1498 of file vhost.c.

void vhost_add_used_and_signal_n	(	struct vhost_dev *	,
		struct vhost_virtqueue *	,
		struct vring_used_elem *	heads,
		unsigned	count
	)

Definition at line 1507 of file vhost.c.

int vhost_add_used_n	(	struct vhost_virtqueue *	,
		struct vring_used_elem *	heads,
		unsigned	count
	)

Definition at line 1420 of file vhost.c.

long vhost_dev_check_owner

(

struct vhost_dev *

)

Definition at line 326 of file vhost.c.

void vhost_dev_cleanup	(	struct vhost_dev *	,
		bool	locked
	)

Definition at line 442 of file vhost.c.

long vhost_dev_init	(	struct vhost_dev *	,
		struct vhost_virtqueue *	vqs,
		int	nvqs
	)

Definition at line 293 of file vhost.c.

long vhost_dev_ioctl	(	struct vhost_dev *	,
		unsigned int	ioctl,
		unsigned long	arg
	)

Definition at line 832 of file vhost.c.

long vhost_dev_reset_owner

(

struct vhost_dev *

)

Definition at line 401 of file vhost.c.

void vhost_disable_notify	(	struct vhost_dev *	,
		struct vhost_virtqueue *
	)

Definition at line 1553 of file vhost.c.

void vhost_discard_vq_desc	(	struct vhost_virtqueue *	,
		int	n
	)

Definition at line 1331 of file vhost.c.

bool vhost_enable_notify	(	struct vhost_dev *	,
		struct vhost_virtqueue *
	)

Definition at line 1516 of file vhost.c.

void vhost_enable_zcopy

(

int

vq

)

Definition at line 249 of file vhost.c.

int vhost_get_vq_desc	(	struct vhost_dev *	,
		struct vhost_virtqueue *	,
		struct iovec	iov[],
		unsigned int	iov_count,
		unsigned int *	out_num,
		unsigned int *	in_num,
		struct vhost_log *	log,
		unsigned int *	log_num
	)

Definition at line 1208 of file vhost.c.

int vhost_init_used

(

struct vhost_virtqueue *

)

Definition at line 1041 of file vhost.c.

int vhost_log_access_ok

(

struct vhost_dev *

)

Definition at line 568 of file vhost.c.

int vhost_log_write	(	struct vhost_virtqueue *	vq,
		struct vhost_log *	log,
		unsigned int	log_num,
		u64	len
	)

Definition at line 979 of file vhost.c.

void vhost_poll_flush

(

struct vhost_poll *

poll

)

Definition at line 135 of file vhost.c.

void vhost_poll_init	(	struct vhost_poll *	poll,
		vhost_work_fn_t	fn,
		unsigned long	mask,
		struct vhost_dev *	dev
	)

Definition at line 77 of file vhost.c.

void vhost_poll_queue

(

struct vhost_poll *

poll

)

Definition at line 153 of file vhost.c.

void vhost_poll_start	(	struct vhost_poll *	poll,
		struct file *	file
	)

Definition at line 90 of file vhost.c.

void vhost_poll_stop

(

struct vhost_poll *

poll

)

Definition at line 101 of file vhost.c.

void vhost_signal	(	struct vhost_dev *	,
		struct vhost_virtqueue *
	)

Definition at line 1490 of file vhost.c.

struct vhost_ubuf_ref* vhost_ubuf_alloc ( struct vhost_virtqueue *  , bool  zcopy  )

read

Definition at line 1575 of file vhost.c.

void vhost_ubuf_put

(

struct vhost_ubuf_ref *

)

Definition at line 1591 of file vhost.c.

void vhost_ubuf_put_and_wait

(

struct vhost_ubuf_ref *

)

Definition at line 1596 of file vhost.c.

int vhost_vq_access_ok

(

struct vhost_virtqueue *

vq

)

Definition at line 596 of file vhost.c.

void vhost_work_init	(	struct vhost_work *	work,
		vhost_work_fn_t	fn
	)

Definition at line 67 of file vhost.c.

void vhost_work_queue	(	struct vhost_dev *	dev,
		struct vhost_work *	work
	)

Definition at line 140 of file vhost.c.

void vhost_zerocopy_callback

(

struct ubuf_info *

)

Definition at line 1603 of file vhost.c.

int vhost_zerocopy_signal_used

(

struct vhost_virtqueue *

vq

)

Definition at line 422 of file vhost.c.