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 #include "exec/memory.h" 15 16 typedef 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 23 struct vhost_dev; 24 struct vhost_log; 25 struct vhost_memory; 26 struct vhost_vring_file; 27 struct vhost_vring_state; 28 struct vhost_vring_addr; 29 struct vhost_scsi_target; 30 31 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque); 32 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev); 33 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev); 34 35 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev, 36 struct vhost_vring_file *file); 37 typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu); 38 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev, 39 struct vhost_scsi_target *target); 40 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev, 41 struct vhost_scsi_target *target); 42 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev, 43 int *version); 44 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base, 45 struct vhost_log *log); 46 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev, 47 struct vhost_memory *mem); 48 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev, 49 struct vhost_vring_addr *addr); 50 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev, 51 struct vhost_vring_state *ring); 52 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev, 53 struct vhost_vring_state *ring); 54 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev, 55 struct vhost_vring_state *ring); 56 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev, 57 struct vhost_vring_state *ring); 58 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev, 59 struct vhost_vring_file *file); 60 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev, 61 struct vhost_vring_file *file); 62 typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev, 63 struct vhost_vring_state *r); 64 typedef int (*vhost_set_features_op)(struct vhost_dev *dev, 65 uint64_t features); 66 typedef int (*vhost_get_features_op)(struct vhost_dev *dev, 67 uint64_t *features); 68 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev); 69 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev); 70 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx); 71 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev, 72 int enable); 73 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev); 74 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev, 75 char *mac_addr); 76 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev, 77 uint64_t start1, uint64_t size1, 78 uint64_t start2, uint64_t size2); 79 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev, 80 uint64_t guest_cid); 81 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start); 82 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev, 83 int enabled); 84 typedef int (*vhost_update_device_iotlb_op)(struct vhost_dev *dev, 85 uint64_t iova, uint64_t uaddr, 86 uint64_t len, 87 IOMMUAccessFlags perm); 88 typedef int (*vhost_invalidate_device_iotlb_op)(struct vhost_dev *dev, 89 uint64_t iova, uint64_t len); 90 91 typedef struct VhostOps { 92 VhostBackendType backend_type; 93 vhost_backend_init vhost_backend_init; 94 vhost_backend_cleanup vhost_backend_cleanup; 95 vhost_backend_memslots_limit vhost_backend_memslots_limit; 96 vhost_net_set_backend_op vhost_net_set_backend; 97 vhost_net_set_mtu_op vhost_net_set_mtu; 98 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint; 99 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint; 100 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version; 101 vhost_set_log_base_op vhost_set_log_base; 102 vhost_set_mem_table_op vhost_set_mem_table; 103 vhost_set_vring_addr_op vhost_set_vring_addr; 104 vhost_set_vring_endian_op vhost_set_vring_endian; 105 vhost_set_vring_num_op vhost_set_vring_num; 106 vhost_set_vring_base_op vhost_set_vring_base; 107 vhost_get_vring_base_op vhost_get_vring_base; 108 vhost_set_vring_kick_op vhost_set_vring_kick; 109 vhost_set_vring_call_op vhost_set_vring_call; 110 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout; 111 vhost_set_features_op vhost_set_features; 112 vhost_get_features_op vhost_get_features; 113 vhost_set_owner_op vhost_set_owner; 114 vhost_reset_device_op vhost_reset_device; 115 vhost_get_vq_index_op vhost_get_vq_index; 116 vhost_set_vring_enable_op vhost_set_vring_enable; 117 vhost_requires_shm_log_op vhost_requires_shm_log; 118 vhost_migration_done_op vhost_migration_done; 119 vhost_backend_can_merge_op vhost_backend_can_merge; 120 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid; 121 vhost_vsock_set_running_op vhost_vsock_set_running; 122 vhost_set_iotlb_callback_op vhost_set_iotlb_callback; 123 vhost_update_device_iotlb_op vhost_update_device_iotlb; 124 vhost_invalidate_device_iotlb_op vhost_invalidate_device_iotlb; 125 } VhostOps; 126 127 extern const VhostOps user_ops; 128 129 int vhost_set_backend_type(struct vhost_dev *dev, 130 VhostBackendType backend_type); 131 132 #endif /* VHOST_BACKEND_H */ 133