4 * Copyright (c) 2013 Virtual Open Systems Sarl.
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
11 #ifndef VHOST_BACKEND_H
12 #define VHOST_BACKEND_H
14 typedef enum VhostBackendType
{
15 VHOST_BACKEND_TYPE_NONE
= 0,
16 VHOST_BACKEND_TYPE_KERNEL
= 1,
17 VHOST_BACKEND_TYPE_USER
= 2,
18 VHOST_BACKEND_TYPE_MAX
= 3,
24 struct vhost_vring_file
;
25 struct vhost_vring_state
;
26 struct vhost_vring_addr
;
27 struct vhost_scsi_target
;
29 typedef int (*vhost_backend_init
)(struct vhost_dev
*dev
, void *opaque
);
30 typedef int (*vhost_backend_cleanup
)(struct vhost_dev
*dev
);
31 typedef int (*vhost_backend_memslots_limit
)(struct vhost_dev
*dev
);
33 typedef int (*vhost_net_set_backend_op
)(struct vhost_dev
*dev
,
34 struct vhost_vring_file
*file
);
35 typedef int (*vhost_scsi_set_endpoint_op
)(struct vhost_dev
*dev
,
36 struct vhost_scsi_target
*target
);
37 typedef int (*vhost_scsi_clear_endpoint_op
)(struct vhost_dev
*dev
,
38 struct vhost_scsi_target
*target
);
39 typedef int (*vhost_scsi_get_abi_version_op
)(struct vhost_dev
*dev
,
41 typedef int (*vhost_set_log_base_op
)(struct vhost_dev
*dev
, uint64_t base
,
42 struct vhost_log
*log
);
43 typedef int (*vhost_set_mem_table_op
)(struct vhost_dev
*dev
,
44 struct vhost_memory
*mem
);
45 typedef int (*vhost_set_vring_addr_op
)(struct vhost_dev
*dev
,
46 struct vhost_vring_addr
*addr
);
47 typedef int (*vhost_set_vring_endian_op
)(struct vhost_dev
*dev
,
48 struct vhost_vring_state
*ring
);
49 typedef int (*vhost_set_vring_num_op
)(struct vhost_dev
*dev
,
50 struct vhost_vring_state
*ring
);
51 typedef int (*vhost_set_vring_base_op
)(struct vhost_dev
*dev
,
52 struct vhost_vring_state
*ring
);
53 typedef int (*vhost_get_vring_base_op
)(struct vhost_dev
*dev
,
54 struct vhost_vring_state
*ring
);
55 typedef int (*vhost_set_vring_kick_op
)(struct vhost_dev
*dev
,
56 struct vhost_vring_file
*file
);
57 typedef int (*vhost_set_vring_call_op
)(struct vhost_dev
*dev
,
58 struct vhost_vring_file
*file
);
59 typedef int (*vhost_set_vring_busyloop_timeout_op
)(struct vhost_dev
*dev
,
60 struct vhost_vring_state
*r
);
61 typedef int (*vhost_set_features_op
)(struct vhost_dev
*dev
,
63 typedef int (*vhost_get_features_op
)(struct vhost_dev
*dev
,
65 typedef int (*vhost_set_owner_op
)(struct vhost_dev
*dev
);
66 typedef int (*vhost_reset_device_op
)(struct vhost_dev
*dev
);
67 typedef int (*vhost_get_vq_index_op
)(struct vhost_dev
*dev
, int idx
);
68 typedef int (*vhost_set_vring_enable_op
)(struct vhost_dev
*dev
,
70 typedef bool (*vhost_requires_shm_log_op
)(struct vhost_dev
*dev
);
71 typedef int (*vhost_migration_done_op
)(struct vhost_dev
*dev
,
73 typedef bool (*vhost_backend_can_merge_op
)(struct vhost_dev
*dev
,
74 uint64_t start1
, uint64_t size1
,
75 uint64_t start2
, uint64_t size2
);
77 typedef struct VhostOps
{
78 VhostBackendType backend_type
;
79 vhost_backend_init vhost_backend_init
;
80 vhost_backend_cleanup vhost_backend_cleanup
;
81 vhost_backend_memslots_limit vhost_backend_memslots_limit
;
82 vhost_net_set_backend_op vhost_net_set_backend
;
83 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint
;
84 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint
;
85 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version
;
86 vhost_set_log_base_op vhost_set_log_base
;
87 vhost_set_mem_table_op vhost_set_mem_table
;
88 vhost_set_vring_addr_op vhost_set_vring_addr
;
89 vhost_set_vring_endian_op vhost_set_vring_endian
;
90 vhost_set_vring_num_op vhost_set_vring_num
;
91 vhost_set_vring_base_op vhost_set_vring_base
;
92 vhost_get_vring_base_op vhost_get_vring_base
;
93 vhost_set_vring_kick_op vhost_set_vring_kick
;
94 vhost_set_vring_call_op vhost_set_vring_call
;
95 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout
;
96 vhost_set_features_op vhost_set_features
;
97 vhost_get_features_op vhost_get_features
;
98 vhost_set_owner_op vhost_set_owner
;
99 vhost_reset_device_op vhost_reset_device
;
100 vhost_get_vq_index_op vhost_get_vq_index
;
101 vhost_set_vring_enable_op vhost_set_vring_enable
;
102 vhost_requires_shm_log_op vhost_requires_shm_log
;
103 vhost_migration_done_op vhost_migration_done
;
104 vhost_backend_can_merge_op vhost_backend_can_merge
;
107 extern const VhostOps user_ops
;
109 int vhost_set_backend_type(struct vhost_dev
*dev
,
110 VhostBackendType backend_type
);
112 #endif /* VHOST_BACKEND_H */