1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2016 Intel Corporation
*/
#ifndef _VIRTIO_USER_VHOST_H
#define _VIRTIO_USER_VHOST_H
#include <stdint.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include "../virtio_pci.h"
#include "../virtio_logs.h"
#include "../virtqueue.h"
struct vhost_vring_state {
unsigned int index;
unsigned int num;
};
struct vhost_vring_file {
unsigned int index;
int fd;
};
struct vhost_vring_addr {
unsigned int index;
/* Option flags. */
unsigned int flags;
/* Flag values: */
/* Whether log address is valid. If set enables logging. */
#define VHOST_VRING_F_LOG 0
/* Start of array of descriptors (virtually contiguous) */
uint64_t desc_user_addr;
/* Used structure address. Must be 32 bit aligned */
uint64_t used_user_addr;
/* Available structure address. Must be 16 bit aligned */
uint64_t avail_user_addr;
/* Logging support. */
/* Log writes to used structure, at offset calculated from specified
* address. Address must be 32 bit aligned.
*/
uint64_t log_guest_addr;
};
enum vhost_user_request {
VHOST_USER_NONE = 0,
VHOST_USER_GET_FEATURES = 1,
VHOST_USER_SET_FEATURES = 2,
VHOST_USER_SET_OWNER = 3,
VHOST_USER_RESET_OWNER = 4,
VHOST_USER_SET_MEM_TABLE = 5,
VHOST_USER_SET_LOG_BASE = 6,
VHOST_USER_SET_LOG_FD = 7,
VHOST_USER_SET_VRING_NUM = 8,
VHOST_USER_SET_VRING_ADDR = 9,
VHOST_USER_SET_VRING_BASE = 10,
VHOST_USER_GET_VRING_BASE = 11,
VHOST_USER_SET_VRING_KICK = 12,
VHOST_USER_SET_VRING_CALL = 13,
VHOST_USER_SET_VRING_ERR = 14,
VHOST_USER_GET_PROTOCOL_FEATURES = 15,
VHOST_USER_SET_PROTOCOL_FEATURES = 16,
VHOST_USER_GET_QUEUE_NUM = 17,
VHOST_USER_SET_VRING_ENABLE = 18,
VHOST_USER_MAX
};
const char * const vhost_msg_strings[VHOST_USER_MAX];
struct vhost_memory_region {
uint64_t guest_phys_addr;
uint64_t memory_size; /* bytes */
uint64_t userspace_addr;
uint64_t mmap_offset;
};
struct virtio_user_dev;
struct virtio_user_backend_ops {
int (*setup)(struct virtio_user_dev *dev);
int (*send_request)(struct virtio_user_dev *dev,
enum vhost_user_request req,
void *arg);
int (*enable_qp)(struct virtio_user_dev *dev,
uint16_t pair_idx,
int enable);
};
extern struct virtio_user_backend_ops virtio_ops_user;
extern struct virtio_user_backend_ops virtio_ops_kernel;
#endif
|
