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 typedef enum VhostSetConfigType { 24 VHOST_SET_CONFIG_TYPE_MASTER = 0, 25 VHOST_SET_CONFIG_TYPE_MIGRATION = 1, 26 } VhostSetConfigType; 27 28 struct vhost_inflight; 29 struct vhost_dev; 30 struct vhost_log; 31 struct vhost_memory; 32 struct vhost_vring_file; 33 struct vhost_vring_state; 34 struct vhost_vring_addr; 35 struct vhost_scsi_target; 36 struct vhost_iotlb_msg; 37 38 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque); 39 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev); 40 typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev); 41 42 typedef int (*vhost_net_set_backend_op)(struct vhost_dev *dev, 43 struct vhost_vring_file *file); 44 typedef int (*vhost_net_set_mtu_op)(struct vhost_dev *dev, uint16_t mtu); 45 typedef int (*vhost_scsi_set_endpoint_op)(struct vhost_dev *dev, 46 struct vhost_scsi_target *target); 47 typedef int (*vhost_scsi_clear_endpoint_op)(struct vhost_dev *dev, 48 struct vhost_scsi_target *target); 49 typedef int (*vhost_scsi_get_abi_version_op)(struct vhost_dev *dev, 50 int *version); 51 typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base, 52 struct vhost_log *log); 53 typedef int (*vhost_set_mem_table_op)(struct vhost_dev *dev, 54 struct vhost_memory *mem); 55 typedef int (*vhost_set_vring_addr_op)(struct vhost_dev *dev, 56 struct vhost_vring_addr *addr); 57 typedef int (*vhost_set_vring_endian_op)(struct vhost_dev *dev, 58 struct vhost_vring_state *ring); 59 typedef int (*vhost_set_vring_num_op)(struct vhost_dev *dev, 60 struct vhost_vring_state *ring); 61 typedef int (*vhost_set_vring_base_op)(struct vhost_dev *dev, 62 struct vhost_vring_state *ring); 63 typedef int (*vhost_get_vring_base_op)(struct vhost_dev *dev, 64 struct vhost_vring_state *ring); 65 typedef int (*vhost_set_vring_kick_op)(struct vhost_dev *dev, 66 struct vhost_vring_file *file); 67 typedef int (*vhost_set_vring_call_op)(struct vhost_dev *dev, 68 struct vhost_vring_file *file); 69 typedef int (*vhost_set_vring_busyloop_timeout_op)(struct vhost_dev *dev, 70 struct vhost_vring_state *r); 71 typedef int (*vhost_set_features_op)(struct vhost_dev *dev, 72 uint64_t features); 73 typedef int (*vhost_get_features_op)(struct vhost_dev *dev, 74 uint64_t *features); 75 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev); 76 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev); 77 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx); 78 typedef int (*vhost_set_vring_enable_op)(struct vhost_dev *dev, 79 int enable); 80 typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev); 81 typedef int (*vhost_migration_done_op)(struct vhost_dev *dev, 82 char *mac_addr); 83 typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev, 84 uint64_t start1, uint64_t size1, 85 uint64_t start2, uint64_t size2); 86 typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev, 87 uint64_t guest_cid); 88 typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start); 89 typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev, 90 int enabled); 91 typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev, 92 struct vhost_iotlb_msg *imsg); 93 typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data, 94 uint32_t offset, uint32_t size, 95 uint32_t flags); 96 typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config, 97 uint32_t config_len); 98 99 typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev, 100 void *session_info, 101 uint64_t *session_id); 102 typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev, 103 uint64_t session_id); 104 105 typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev, 106 MemoryRegionSection *section); 107 108 typedef int (*vhost_get_inflight_fd_op)(struct vhost_dev *dev, 109 uint16_t queue_size, 110 struct vhost_inflight *inflight); 111 112 typedef int (*vhost_set_inflight_fd_op)(struct vhost_dev *dev, 113 struct vhost_inflight *inflight); 114 115 typedef struct VhostOps { 116 VhostBackendType backend_type; 117 vhost_backend_init vhost_backend_init; 118 vhost_backend_cleanup vhost_backend_cleanup; 119 vhost_backend_memslots_limit vhost_backend_memslots_limit; 120 vhost_net_set_backend_op vhost_net_set_backend; 121 vhost_net_set_mtu_op vhost_net_set_mtu; 122 vhost_scsi_set_endpoint_op vhost_scsi_set_endpoint; 123 vhost_scsi_clear_endpoint_op vhost_scsi_clear_endpoint; 124 vhost_scsi_get_abi_version_op vhost_scsi_get_abi_version; 125 vhost_set_log_base_op vhost_set_log_base; 126 vhost_set_mem_table_op vhost_set_mem_table; 127 vhost_set_vring_addr_op vhost_set_vring_addr; 128 vhost_set_vring_endian_op vhost_set_vring_endian; 129 vhost_set_vring_num_op vhost_set_vring_num; 130 vhost_set_vring_base_op vhost_set_vring_base; 131 vhost_get_vring_base_op vhost_get_vring_base; 132 vhost_set_vring_kick_op vhost_set_vring_kick; 133 vhost_set_vring_call_op vhost_set_vring_call; 134 vhost_set_vring_busyloop_timeout_op vhost_set_vring_busyloop_timeout; 135 vhost_set_features_op vhost_set_features; 136 vhost_get_features_op vhost_get_features; 137 vhost_set_owner_op vhost_set_owner; 138 vhost_reset_device_op vhost_reset_device; 139 vhost_get_vq_index_op vhost_get_vq_index; 140 vhost_set_vring_enable_op vhost_set_vring_enable; 141 vhost_requires_shm_log_op vhost_requires_shm_log; 142 vhost_migration_done_op vhost_migration_done; 143 vhost_backend_can_merge_op vhost_backend_can_merge; 144 vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid; 145 vhost_vsock_set_running_op vhost_vsock_set_running; 146 vhost_set_iotlb_callback_op vhost_set_iotlb_callback; 147 vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg; 148 vhost_get_config_op vhost_get_config; 149 vhost_set_config_op vhost_set_config; 150 vhost_crypto_create_session_op vhost_crypto_create_session; 151 vhost_crypto_close_session_op vhost_crypto_close_session; 152 vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter; 153 vhost_get_inflight_fd_op vhost_get_inflight_fd; 154 vhost_set_inflight_fd_op vhost_set_inflight_fd; 155 } VhostOps; 156 157 extern const VhostOps user_ops; 158 159 int vhost_set_backend_type(struct vhost_dev *dev, 160 VhostBackendType backend_type); 161 162 int vhost_backend_update_device_iotlb(struct vhost_dev *dev, 163 uint64_t iova, uint64_t uaddr, 164 uint64_t len, 165 IOMMUAccessFlags perm); 166 167 int vhost_backend_invalidate_device_iotlb(struct vhost_dev *dev, 168 uint64_t iova, uint64_t len); 169 170 int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev, 171 struct vhost_iotlb_msg *imsg); 172 173 #endif /* VHOST_BACKEND_H */ 174