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 /* 66 * fabric module calls for target_core_fabric_configfs.c 67 */ 68 struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *, 69 struct config_group *, const char *); 70 void (*fabric_drop_wwn)(struct se_wwn *); 71 struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *, 72 struct config_group *, const char *); 73 void (*fabric_drop_tpg)(struct se_portal_group *); 74 int (*fabric_post_link)(struct se_portal_group *, 75 struct se_lun *); 76 void (*fabric_pre_unlink)(struct se_portal_group *, 77 struct se_lun *); 78 struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *, 79 struct config_group *, const char *); 80 void (*fabric_drop_np)(struct se_tpg_np *); 81 struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *, 82 struct config_group *, const char *); 83 void (*fabric_drop_nodeacl)(struct se_node_acl *); 84 }; 85 86 struct se_session *transport_init_session(void); 87 void __transport_register_session(struct se_portal_group *, 88 struct se_node_acl *, struct se_session *, void *); 89 void transport_register_session(struct se_portal_group *, 90 struct se_node_acl *, struct se_session *, void *); 91 void target_get_session(struct se_session *); 92 void target_put_session(struct se_session *); 93 void transport_free_session(struct se_session *); 94 void target_put_nacl(struct se_node_acl *); 95 void transport_deregister_session_configfs(struct se_session *); 96 void transport_deregister_session(struct se_session *); 97 98 99 void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *, 100 struct se_session *, u32, int, int, unsigned char *); 101 sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32); 102 sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); 103 int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *, 104 unsigned char *, unsigned char *, u32, u32, int, int, int, 105 struct scatterlist *, u32, struct scatterlist *, u32); 106 int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, 107 unsigned char *, u32, u32, int, int, int); 108 int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, 109 unsigned char *sense, u32 unpacked_lun, 110 void *fabric_tmr_ptr, unsigned char tm_type, 111 gfp_t, unsigned int, int); 112 int transport_handle_cdb_direct(struct se_cmd *); 113 sense_reason_t transport_generic_new_cmd(struct se_cmd *); 114 115 void target_execute_cmd(struct se_cmd *cmd); 116 117 void transport_generic_free_cmd(struct se_cmd *, int); 118 119 bool transport_wait_for_tasks(struct se_cmd *); 120 int transport_check_aborted_status(struct se_cmd *, int); 121 int transport_send_check_condition_and_sense(struct se_cmd *, 122 sense_reason_t, 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 *, sense_reason_t); 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_set_initiator_node_tag(struct se_portal_group *, 146 struct se_node_acl *, const char *); 147 int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *, 148 struct se_portal_group *, void *, int); 149 int core_tpg_deregister(struct se_portal_group *); 150 151 /* SAS helpers */ 152 u8 sas_get_fabric_proto_ident(struct se_portal_group *); 153 u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 154 struct t10_pr_registration *, int *, unsigned char *); 155 u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 156 struct t10_pr_registration *, int *); 157 char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *, 158 u32 *, char **); 159 160 /* FC helpers */ 161 u8 fc_get_fabric_proto_ident(struct se_portal_group *); 162 u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 163 struct t10_pr_registration *, int *, unsigned char *); 164 u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 165 struct t10_pr_registration *, int *); 166 char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *, 167 u32 *, char **); 168 169 /* iSCSI helpers */ 170 u8 iscsi_get_fabric_proto_ident(struct se_portal_group *); 171 u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, 172 struct t10_pr_registration *, int *, unsigned char *); 173 u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, 174 struct t10_pr_registration *, int *); 175 char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *, 176 u32 *, char **); 177 178 #endif /* TARGET_CORE_FABRICH */ 179