1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
5 #ifndef _VIRTIO_USER_VHOST_H
6 #define _VIRTIO_USER_VHOST_H
9 #include <linux/types.h>
10 #include <linux/ioctl.h>
12 #include "../virtio_pci.h"
13 #include "../virtio_logs.h"
14 #include "../virtqueue.h"
16 struct vhost_vring_state {
21 struct vhost_vring_file {
26 struct vhost_vring_addr {
31 /* Whether log address is valid. If set enables logging. */
32 #define VHOST_VRING_F_LOG 0
34 /* Start of array of descriptors (virtually contiguous) */
35 uint64_t desc_user_addr;
36 /* Used structure address. Must be 32 bit aligned */
37 uint64_t used_user_addr;
38 /* Available structure address. Must be 16 bit aligned */
39 uint64_t avail_user_addr;
40 /* Logging support. */
41 /* Log writes to used structure, at offset calculated from specified
42 * address. Address must be 32 bit aligned.
44 uint64_t log_guest_addr;
47 enum vhost_user_request {
49 VHOST_USER_GET_FEATURES = 1,
50 VHOST_USER_SET_FEATURES = 2,
51 VHOST_USER_SET_OWNER = 3,
52 VHOST_USER_RESET_OWNER = 4,
53 VHOST_USER_SET_MEM_TABLE = 5,
54 VHOST_USER_SET_LOG_BASE = 6,
55 VHOST_USER_SET_LOG_FD = 7,
56 VHOST_USER_SET_VRING_NUM = 8,
57 VHOST_USER_SET_VRING_ADDR = 9,
58 VHOST_USER_SET_VRING_BASE = 10,
59 VHOST_USER_GET_VRING_BASE = 11,
60 VHOST_USER_SET_VRING_KICK = 12,
61 VHOST_USER_SET_VRING_CALL = 13,
62 VHOST_USER_SET_VRING_ERR = 14,
63 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
64 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
65 VHOST_USER_GET_QUEUE_NUM = 17,
66 VHOST_USER_SET_VRING_ENABLE = 18,
70 extern const char * const vhost_msg_strings[VHOST_USER_MAX];
72 struct vhost_memory_region {
73 uint64_t guest_phys_addr;
74 uint64_t memory_size; /* bytes */
75 uint64_t userspace_addr;
79 struct virtio_user_dev;
81 struct virtio_user_backend_ops {
82 int (*setup)(struct virtio_user_dev *dev);
83 int (*send_request)(struct virtio_user_dev *dev,
84 enum vhost_user_request req,
86 int (*enable_qp)(struct virtio_user_dev *dev,
91 extern struct virtio_user_backend_ops virtio_ops_user;
92 extern struct virtio_user_backend_ops virtio_ops_kernel;