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_
15 typedef enum VhostBackendType {
16 VHOST_BACKEND_TYPE_NONE = 0,
17 VHOST_BACKEND_TYPE_KERNEL = 1,
18 VHOST_BACKEND_TYPE_USER = 2,
19 VHOST_BACKEND_TYPE_MAX = 3,
25 struct vhost_vring_file;
26 struct vhost_vring_state;
27 struct vhost_vring_addr;
28 struct vhost_scsi_target;
30 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
31 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
32 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
34 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev,
35 struct vhost_vring_file *file);
36 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev,
37 struct vhost_scsi_target *target);
38 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev,
39 struct vhost_scsi_target *target);
40 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev,
42 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
43 struct vhost_log *log);
44 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev,
45 struct vhost_memory *mem);
46 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev,
47 struct vhost_vring_addr *addr);
48 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev,
49 struct vhost_vring_state *ring);
50 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev,
51 struct vhost_vring_state *ring);
52 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev,
53 struct vhost_vring_state *ring);
54 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev,
55 struct vhost_vring_state *ring);
56 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev,
57 struct vhost_vring_file *file);
58 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev,
59 struct vhost_vring_file *file);
60 typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
62 typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
64 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
65 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
66 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
67 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev,
69 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
70 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
72 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
73 uint64_t start1, uint64_t size1,
74 uint64_t start2, uint64_t size2);
76 typedef struct VhostOps {
77 VhostBackendType backend_type;
78 vhost_backend_init vhost_backend_init;
79 vhost_backend_cleanup vhost_backend_cleanup;
80 vhost_backend_memslots_limit vhost_backend_memslots_limit;
81 vhost_net_set_backend_op vhost_net_set_backend;
82 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint;
83 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint;
84 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version;
85 vhost_set_log_base_op vhost_set_log_base;
86 vhost_set_mem_table_op vhost_set_mem_table;
87 vhost_set_vring_addr_op vhost_set_vring_addr;
88 vhost_set_vring_endian_op vhost_set_vring_endian;
89 vhost_set_vring_num_op vhost_set_vring_num;
90 vhost_set_vring_base_op vhost_set_vring_base;
91 vhost_get_vring_base_op vhost_get_vring_base;
92 vhost_set_vring_kick_op vhost_set_vring_kick;
93 vhost_set_vring_call_op vhost_set_vring_call;
94 vhost_set_features_op vhost_set_features;
95 vhost_get_features_op vhost_get_features;
96 vhost_set_owner_op vhost_set_owner;
97 vhost_reset_device_op vhost_reset_device;
98 vhost_get_vq_index_op vhost_get_vq_index;
99 vhost_set_vring_enable_op vhost_set_vring_enable;
100 vhost_requires_shm_log_op vhost_requires_shm_log;
101 vhost_migration_done_op vhost_migration_done;
102 vhost_backend_can_merge_op vhost_backend_can_merge;
105 extern const VhostOps user_ops;
107 int vhost_set_backend_type(struct vhost_dev *dev,
108 VhostBackendType backend_type);
110 #endif /* VHOST_BACKEND_H_ */