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11#ifndef VHOST_BACKEND_H
12#define VHOST_BACKEND_H
13
14#include "exec/memory.h"
15
16typedef enum VhostBackendType {
17 VHOST_BACKEND_TYPE_NONE = 0,
18 VHOST_BACKEND_TYPE_KERNEL = 1,
19 VHOST_BACKEND_TYPE_USER = 2,
20 VHOST_BACKEND_TYPE_MAX = 3,
21} VhostBackendType;
22
23typedef enum VhostSetConfigType {
24 VHOST_SET_CONFIG_TYPE_MASTER = 0,
25 VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
26} VhostSetConfigType;
27
28struct vhost_dev;
29struct vhost_log;
30struct vhost_memory;
31struct vhost_vring_file;
32struct vhost_vring_state;
33struct vhost_vring_addr;
34struct vhost_scsi_target;
35struct vhost_iotlb_msg;
36
37typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
38typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
39typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
40
41typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev,
42 struct vhost_vring_file *file);
43typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu);
44typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev,
45 struct vhost_scsi_target *target);
46typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev,
47 struct vhost_scsi_target *target);
48typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev,
49 int *version);
50typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
51 struct vhost_log *log);
52typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev,
53 struct vhost_memory *mem);
54typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev,
55 struct vhost_vring_addr *addr);
56typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev,
57 struct vhost_vring_state *ring);
58typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev,
59 struct vhost_vring_state *ring);
60typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev,
61 struct vhost_vring_state *ring);
62typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev,
63 struct vhost_vring_state *ring);
64typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev,
65 struct vhost_vring_file *file);
66typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev,
67 struct vhost_vring_file *file);
68typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev,
69 struct vhost_vring_state *r);
70typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
71 uint64_t features);
72typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
73 uint64_t *features);
74typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
75typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
76typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
77typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev,
78 int enable);
79typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
80typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
81 char *mac_addr);
82typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
83 uint64_t start1, uint64_t size1,
84 uint64_t start2, uint64_t size2);
85typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
86 uint64_t guest_cid);
87typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
88typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
89 int enabled);
90typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev,
91 struct vhost_iotlb_msg *imsg);
92typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data,
93 uint32_t offset, uint32_t size,
94 uint32_t flags);
95typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config,
96 uint32_t config_len);
97
98typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev,
99 void *session_info,
100 uint64_t *session_id);
101typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev,
102 uint64_t session_id);
103
104typedef struct VhostOps {
105 VhostBackendType backend_type;
106 vhost_backend_init vhost_backend_init;
107 vhost_backend_cleanup vhost_backend_cleanup;
108 vhost_backend_memslots_limit vhost_backend_memslots_limit;
109 vhost_net_set_backend_op vhost_net_set_backend;
110 vhost_net_set_mtu_op vhost_net_set_mtu;
111 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint;
112 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint;
113 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version;
114 vhost_set_log_base_op vhost_set_log_base;
115 vhost_set_mem_table_op vhost_set_mem_table;
116 vhost_set_vring_addr_op vhost_set_vring_addr;
117 vhost_set_vring_endian_op vhost_set_vring_endian;
118 vhost_set_vring_num_op vhost_set_vring_num;
119 vhost_set_vring_base_op vhost_set_vring_base;
120 vhost_get_vring_base_op vhost_get_vring_base;
121 vhost_set_vring_kick_op vhost_set_vring_kick;
122 vhost_set_vring_call_op vhost_set_vring_call;
123 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout;
124 vhost_set_features_op vhost_set_features;
125 vhost_get_features_op vhost_get_features;
126 vhost_set_owner_op vhost_set_owner;
127 vhost_reset_device_op vhost_reset_device;
128 vhost_get_vq_index_op vhost_get_vq_index;
129 vhost_set_vring_enable_op vhost_set_vring_enable;
130 vhost_requires_shm_log_op vhost_requires_shm_log;
131 vhost_migration_done_op vhost_migration_done;
132 vhost_backend_can_merge_op vhost_backend_can_merge;
133 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
134 vhost_vsock_set_running_op vhost_vsock_set_running;
135 vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
136 vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg;
137 vhost_get_config_op vhost_get_config;
138 vhost_set_config_op vhost_set_config;
139 vhost_crypto_create_session_op vhost_crypto_create_session;
140 vhost_crypto_close_session_op vhost_crypto_close_session;
141} VhostOps;
142
143extern const VhostOps user_ops;
144
145int vhost_set_backend_type(struct vhost_dev *dev,
146 VhostBackendType backend_type);
147
148int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
149 uint64_t iova, uint64_t uaddr,
150 uint64_t len,
151 IOMMUAccessFlags perm);
152
153int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev,
154 uint64_t iova, uint64_t len);
155
156int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev,
157 struct vhost_iotlb_msg *imsg);
158
159#endif
160
