1 /* 2 * vhost-backend 3 * 4 * Copyright (c) 2013 Virtual Open Systems Sarl. 5 * 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. 8 * 9 */ 10 11 #ifndef VHOST_BACKEND_H 12 #define VHOST_BACKEND_H 13 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, 19 } VhostBackendType; 20 21 struct vhost_dev; 22 struct vhost_log; 23 struct vhost_memory; 24 struct vhost_vring_file; 25 struct vhost_vring_state; 26 struct vhost_vring_addr; 27 struct vhost_scsi_target; 28 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); 32 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, 40 int *version); 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, 62 uint64_t features); 63 typedef int (*vhost_get_features_op)(struct vhost_dev *dev, 64 uint64_t *features); 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, 69 int enable); 70 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev); 71 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev, 72 char *mac_addr); 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); 76 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; 105 } VhostOps; 106 107 extern const VhostOps user_ops; 108 109 int vhost_set_backend_type(struct vhost_dev *dev, 110 VhostBackendType backend_type); 111 112 #endif /* VHOST_BACKEND_H */ 113