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 function pointer for TCM to perform command map 37 * from TCM processing thread context, for those struct se_cmd 38 * initially allocated in interrupt context. 39 */ 40 int (*new_cmd_map)(struct se_cmd *); 41 /* 42 * Optional to release struct se_cmd and fabric dependent allocated 43 * I/O descriptor in transport_cmd_check_stop(). 44 * 45 * Returning 1 will signal a descriptor has been released. 46 * Returning 0 will signal a descriptor has not been released. 47 */ 48 int (*check_stop_free)(struct se_cmd *); 49 void (*release_cmd)(struct se_cmd *); 50 void (*put_session)(struct se_session *); 51 /* 52 * Called with spin_lock_bh(struct se_portal_group->session_lock held. 53 */ 54 int (*shutdown_session)(struct se_session *); 55 void (*close_session)(struct se_session *); 56 u32 (*sess_get_index)(struct se_session *); 57 /* 58 * Used only for SCSI fabrics that contain multi-value TransportIDs 59 * (like iSCSI). All other SCSI fabrics should set this to NULL. 60 */ 61 u32 (*sess_get_initiator_sid)(struct se_session *, 62 unsigned char *, u32); 63 int (*write_pending)(struct se_cmd *); 64 int (*write_pending_status)(struct se_cmd *); 65 void (*set_default_node_attributes)(struct se_node_acl *); 66 u32 (*get_task_tag)(struct se_cmd *); 67 int (*get_cmd_state)(struct se_cmd *); 68 int (*queue_data_in)(struct se_cmd *); 69 int (*queue_status)(struct se_cmd *); 70 int (*queue_tm_rsp)(struct se_cmd *); 71 u16 (*set_fabric_sense_len)(struct se_cmd *, u32); 72 u16 (*get_fabric_sense_len)(void); 73 /* 74 * fabric module calls for target_core_fabric_configfs.c 75 */ 76 struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *, 77 struct config_group *, const char *); 78 void (*fabric_drop_wwn)(struct se_wwn *); 79 struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *, 80 struct config_group *, const char *); 81 void (*fabric_drop_tpg)(struct se_portal_group *); 82 int (*fabric_post_link)(struct se_portal_group *, 83 struct se_lun *); 84 void (*fabric_pre_unlink)(struct se_portal_group *, 85 struct se_lun *); 86 struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *, 87 struct config_group *, const char *); 88 void (*fabric_drop_np)(struct se_tpg_np *); 89 struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *, 90 struct config_group *, const char *); 91 void (*fabric_drop_nodeacl)(struct se_node_acl *); 92 }; 93 94 struct se_session *transport_init_session(void); 95 void __transport_register_session(struct se_portal_group *, 96 struct se_node_acl *, struct se_session *, void *); 97 void transport_register_session(struct se_portal_group *, 98 struct se_node_acl *, struct se_session *, void *); 99 void target_get_session(struct se_session *); 100 void target_put_session(struct se_session *); 101 void transport_free_session(struct se_session *); 102 void target_put_nacl(struct se_node_acl *); 103 void transport_deregister_session_configfs(struct se_session *); 104 void transport_deregister_session(struct se_session *); 105 106 107 void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *, 108 struct se_session *, u32, int, int, unsigned char *); 109 int transport_lookup_cmd_lun(struct se_cmd *, u32); 110 int target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); 111 void target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, 112 unsigned char *, u32, u32, int, int, int); 113 int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, 114 unsigned char *sense, u32 unpacked_lun, 115 void *fabric_tmr_ptr, unsigned char tm_type, 116 gfp_t, unsigned int, int); 117 int transport_handle_cdb_direct(struct se_cmd *); 118 int transport_generic_handle_cdb_map(struct se_cmd *); 119 int transport_generic_handle_data(struct se_cmd *); 120 int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, 121 struct scatterlist *, u32, struct scatterlist *, u32); 122 int transport_generic_new_cmd(struct se_cmd *); 123 124 void transport_generic_process_write(struct se_cmd *); 125 126 void transport_generic_free_cmd(struct se_cmd *, int); 127 128 bool transport_wait_for_tasks(struct se_cmd *); 129 int transport_check_aborted_status(struct se_cmd *, int); 130 int transport_send_check_condition_and_sense(struct se_cmd *, u8, int); 131 132 void target_get_sess_cmd(struct se_session *, struct se_cmd *, bool); 133 int target_put_sess_cmd(struct se_session *, struct se_cmd *); 134 void target_splice_sess_cmd_list(struct se_session *); 135 void target_wait_for_sess_cmds(struct se_session *, int); 136 137 int core_alua_check_nonop_delay(struct se_cmd *); 138 139 int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t); 140 void core_tmr_release_req(struct se_tmr_req *); 141 int transport_generic_handle_tmr(struct se_cmd *); 142 void transport_generic_request_failure(struct se_cmd *); 143 int transport_lookup_tmr_lun(struct se_cmd *, u32); 144 145 struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *, 146 unsigned char *); 147 void core_tpg_clear_object_luns(struct se_portal_group *); 148 struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *, 149 struct se_node_acl *, const char *, u32); 150 int core_tpg_del_initiator_node_acl(struct se_portal_group *, 151 struct se_node_acl *, int); 152 int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *, 153 unsigned char *, u32, int); 154 int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *, 155 struct se_portal_group *, void *, int); 156 int core_tpg_deregister(struct se_portal_group *); 157 158 /* SAS helpers */ 159 u8 sas_get_fabric_proto_ident(struct se_portal_group *); 160 u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 161 struct t10_pr_registration *, int *, unsigned char *); 162 u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 163 struct t10_pr_registration *, int *); 164 char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *, 165 u32 *, char **); 166 167 /* FC helpers */ 168 u8 fc_get_fabric_proto_ident(struct se_portal_group *); 169 u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 170 struct t10_pr_registration *, int *, unsigned char *); 171 u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 172 struct t10_pr_registration *, int *); 173 char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *, 174 u32 *, char **); 175 176 /* iSCSI helpers */ 177 u8 iscsi_get_fabric_proto_ident(struct se_portal_group *); 178 u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 179 struct t10_pr_registration *, int *, unsigned char *); 180 u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 181 struct t10_pr_registration *, int *); 182 char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *, 183 u32 *, char **); 184 185 #endif /* TARGET_CORE_FABRICH */ 186