1 #ifndef TARGET_CORE_FABRIC_H 2 #define TARGET_CORE_FABRIC_H 3 4 struct target_core_fabric_ops { 5 struct configfs_subsystem *tf_subsys; 6 char *(*get_fabric_name)(void); 7 u8 (*get_fabric_proto_ident)(struct se_portal_group *); 8 char *(*tpg_get_wwn)(struct se_portal_group *); 9 u16 (*tpg_get_tag)(struct se_portal_group *); 10 u32 (*tpg_get_default_depth)(struct se_portal_group *); 11 u32 (*tpg_get_pr_transport_id)(struct se_portal_group *, 12 struct se_node_acl *, 13 struct t10_pr_registration *, int *, 14 unsigned char *); 15 u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *, 16 struct se_node_acl *, 17 struct t10_pr_registration *, int *); 18 char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *, 19 const char *, u32 *, char **); 20 int (*tpg_check_demo_mode)(struct se_portal_group *); 21 int (*tpg_check_demo_mode_cache)(struct se_portal_group *); 22 int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *); 23 int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *); 24 /* 25 * Optionally used by fabrics to allow demo-mode login, but not 26 * expose any TPG LUNs, and return 'not connected' in standard 27 * inquiry response 28 */ 29 int (*tpg_check_demo_mode_login_only)(struct se_portal_group *); 30 struct se_node_acl *(*tpg_alloc_fabric_acl)( 31 struct se_portal_group *); 32 void (*tpg_release_fabric_acl)(struct se_portal_group *, 33 struct se_node_acl *); 34 u32 (*tpg_get_inst_index)(struct se_portal_group *); 35 /* 36 * Optional to release struct se_cmd and fabric dependent allocated 37 * I/O descriptor in transport_cmd_check_stop(). 38 * 39 * Returning 1 will signal a descriptor has been released. 40 * Returning 0 will signal a descriptor has not been released. 41 */ 42 int (*check_stop_free)(struct se_cmd *); 43 void (*release_cmd)(struct se_cmd *); 44 void (*put_session)(struct se_session *); 45 /* 46 * Called with spin_lock_bh(struct se_portal_group->session_lock held. 47 */ 48 int (*shutdown_session)(struct se_session *); 49 void (*close_session)(struct se_session *); 50 u32 (*sess_get_index)(struct se_session *); 51 /* 52 * Used only for SCSI fabrics that contain multi-value TransportIDs 53 * (like iSCSI). All other SCSI fabrics should set this to NULL. 54 */ 55 u32 (*sess_get_initiator_sid)(struct se_session *, 56 unsigned char *, u32); 57 int (*write_pending)(struct se_cmd *); 58 int (*write_pending_status)(struct se_cmd *); 59 void (*set_default_node_attributes)(struct se_node_acl *); 60 u32 (*get_task_tag)(struct se_cmd *); 61 int (*get_cmd_state)(struct se_cmd *); 62 int (*queue_data_in)(struct se_cmd *); 63 int (*queue_status)(struct se_cmd *); 64 int (*queue_tm_rsp)(struct se_cmd *); 65 u16 (*set_fabric_sense_len)(struct se_cmd *, u32); 66 u16 (*get_fabric_sense_len)(void); 67 /* 68 * fabric module calls for target_core_fabric_configfs.c 69 */ 70 struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *, 71 struct config_group *, const char *); 72 void (*fabric_drop_wwn)(struct se_wwn *); 73 struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *, 74 struct config_group *, const char *); 75 void (*fabric_drop_tpg)(struct se_portal_group *); 76 int (*fabric_post_link)(struct se_portal_group *, 77 struct se_lun *); 78 void (*fabric_pre_unlink)(struct se_portal_group *, 79 struct se_lun *); 80 struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *, 81 struct config_group *, const char *); 82 void (*fabric_drop_np)(struct se_tpg_np *); 83 struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *, 84 struct config_group *, const char *); 85 void (*fabric_drop_nodeacl)(struct se_node_acl *); 86 }; 87 88 struct se_session *transport_init_session(void); 89 void __transport_register_session(struct se_portal_group *, 90 struct se_node_acl *, struct se_session *, void *); 91 void transport_register_session(struct se_portal_group *, 92 struct se_node_acl *, struct se_session *, void *); 93 void target_get_session(struct se_session *); 94 void target_put_session(struct se_session *); 95 void transport_free_session(struct se_session *); 96 void target_put_nacl(struct se_node_acl *); 97 void transport_deregister_session_configfs(struct se_session *); 98 void transport_deregister_session(struct se_session *); 99 100 101 void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *, 102 struct se_session *, u32, int, int, unsigned char *); 103 int transport_lookup_cmd_lun(struct se_cmd *, u32); 104 int target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); 105 int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, 106 unsigned char *, u32, u32, int, int, int); 107 int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, 108 unsigned char *sense, u32 unpacked_lun, 109 void *fabric_tmr_ptr, unsigned char tm_type, 110 gfp_t, unsigned int, int); 111 int transport_handle_cdb_direct(struct se_cmd *); 112 int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, 113 struct scatterlist *, u32, struct scatterlist *, u32); 114 int transport_generic_new_cmd(struct se_cmd *); 115 116 void target_execute_cmd(struct se_cmd *cmd); 117 118 void transport_generic_free_cmd(struct se_cmd *, int); 119 120 bool transport_wait_for_tasks(struct se_cmd *); 121 int transport_check_aborted_status(struct se_cmd *, int); 122 int transport_send_check_condition_and_sense(struct se_cmd *, u8, int); 123 124 int target_put_sess_cmd(struct se_session *, struct se_cmd *); 125 void target_sess_cmd_list_set_waiting(struct se_session *); 126 void target_wait_for_sess_cmds(struct se_session *, int); 127 128 int core_alua_check_nonop_delay(struct se_cmd *); 129 130 int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t); 131 void core_tmr_release_req(struct se_tmr_req *); 132 int transport_generic_handle_tmr(struct se_cmd *); 133 void transport_generic_request_failure(struct se_cmd *); 134 int transport_lookup_tmr_lun(struct se_cmd *, u32); 135 136 struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *, 137 unsigned char *); 138 void core_tpg_clear_object_luns(struct se_portal_group *); 139 struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *, 140 struct se_node_acl *, const char *, u32); 141 int core_tpg_del_initiator_node_acl(struct se_portal_group *, 142 struct se_node_acl *, int); 143 int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *, 144 unsigned char *, u32, int); 145 int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *, 146 struct se_portal_group *, void *, int); 147 int core_tpg_deregister(struct se_portal_group *); 148 149 /* SAS helpers */ 150 u8 sas_get_fabric_proto_ident(struct se_portal_group *); 151 u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 152 struct t10_pr_registration *, int *, unsigned char *); 153 u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 154 struct t10_pr_registration *, int *); 155 char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *, 156 u32 *, char **); 157 158 /* FC helpers */ 159 u8 fc_get_fabric_proto_ident(struct se_portal_group *); 160 u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 161 struct t10_pr_registration *, int *, unsigned char *); 162 u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 163 struct t10_pr_registration *, int *); 164 char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *, 165 u32 *, char **); 166 167 /* iSCSI helpers */ 168 u8 iscsi_get_fabric_proto_ident(struct se_portal_group *); 169 u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 170 struct t10_pr_registration *, int *, unsigned char *); 171 u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 172 struct t10_pr_registration *, int *); 173 char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *, 174 u32 *, char **); 175 176 #endif /* TARGET_CORE_FABRICH */ 177