1 #ifndef TARGET_CORE_BASE_H 2 #define TARGET_CORE_BASE_H 3 4 #include <linux/in.h> 5 #include <linux/configfs.h> 6 #include <linux/dma-mapping.h> 7 #include <linux/blkdev.h> 8 #include <scsi/scsi_cmnd.h> 9 #include <net/sock.h> 10 #include <net/tcp.h> 11 12 #define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml" 13 14 /* Maximum Number of LUNs per Target Portal Group */ 15 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ 16 #define TRANSPORT_MAX_LUNS_PER_TPG 256 17 /* 18 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. 19 * 20 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and 21 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use 22 * 16-byte CDBs by default and require an extra allocation for 23 * 32-byte CDBs to because of legacy issues. 24 * 25 * Within TCM Core there are no such legacy limitiations, so we go ahead 26 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() 27 * within all TCM Core and subsystem plugin code. 28 */ 29 #define TCM_MAX_COMMAND_SIZE 32 30 /* 31 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently 32 * defined 96, but the real limit is 252 (or 260 including the header) 33 */ 34 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE 35 /* Used by transport_send_check_condition_and_sense() */ 36 #define SPC_SENSE_KEY_OFFSET 2 37 #define SPC_ASC_KEY_OFFSET 12 38 #define SPC_ASCQ_KEY_OFFSET 13 39 #define TRANSPORT_IQN_LEN 224 40 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ 41 #define LU_GROUP_NAME_BUF 256 42 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ 43 #define TG_PT_GROUP_NAME_BUF 256 44 /* Used to parse VPD into struct t10_vpd */ 45 #define VPD_TMP_BUF_SIZE 128 46 /* Used by transport_generic_cmd_sequencer() */ 47 #define READ_BLOCK_LEN 6 48 #define READ_CAP_LEN 8 49 #define READ_POSITION_LEN 20 50 #define INQUIRY_LEN 36 51 /* Used by transport_get_inquiry_vpd_serial() */ 52 #define INQUIRY_VPD_SERIAL_LEN 254 53 /* Used by transport_get_inquiry_vpd_device_ident() */ 54 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 55 56 /* struct se_hba->hba_flags */ 57 enum hba_flags_table { 58 HBA_FLAGS_INTERNAL_USE = 0x01, 59 HBA_FLAGS_PSCSI_MODE = 0x02, 60 }; 61 62 /* struct se_lun->lun_status */ 63 enum transport_lun_status_table { 64 TRANSPORT_LUN_STATUS_FREE = 0, 65 TRANSPORT_LUN_STATUS_ACTIVE = 1, 66 }; 67 68 /* struct se_portal_group->se_tpg_type */ 69 enum transport_tpg_type_table { 70 TRANSPORT_TPG_TYPE_NORMAL = 0, 71 TRANSPORT_TPG_TYPE_DISCOVERY = 1, 72 }; 73 74 /* Used for generate timer flags */ 75 enum se_task_flags { 76 TF_ACTIVE = (1 << 0), 77 TF_SENT = (1 << 1), 78 TF_REQUEST_STOP = (1 << 2), 79 }; 80 81 /* Special transport agnostic struct se_cmd->t_states */ 82 enum transport_state_table { 83 TRANSPORT_NO_STATE = 0, 84 TRANSPORT_NEW_CMD = 1, 85 TRANSPORT_WRITE_PENDING = 3, 86 TRANSPORT_PROCESS_WRITE = 4, 87 TRANSPORT_PROCESSING = 5, 88 TRANSPORT_COMPLETE = 6, 89 TRANSPORT_PROCESS_TMR = 9, 90 TRANSPORT_ISTATE_PROCESSING = 11, 91 TRANSPORT_NEW_CMD_MAP = 16, 92 TRANSPORT_FREE_CMD_INTR = 17, 93 TRANSPORT_COMPLETE_QF_WP = 18, 94 TRANSPORT_COMPLETE_QF_OK = 19, 95 }; 96 97 /* Used for struct se_cmd->se_cmd_flags */ 98 enum se_cmd_flags_table { 99 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 100 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 101 SCF_EMULATED_TASK_SENSE = 0x00000004, 102 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008, 103 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010, 104 SCF_SCSI_NON_DATA_CDB = 0x00000040, 105 SCF_SCSI_CDB_EXCEPTION = 0x00000080, 106 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100, 107 SCF_SE_CMD_FAILED = 0x00000400, 108 SCF_SE_LUN_CMD = 0x00000800, 109 SCF_SE_ALLOW_EOO = 0x00001000, 110 SCF_SENT_CHECK_CONDITION = 0x00004000, 111 SCF_OVERFLOW_BIT = 0x00008000, 112 SCF_UNDERFLOW_BIT = 0x00010000, 113 SCF_SENT_DELAYED_TAS = 0x00020000, 114 SCF_ALUA_NON_OPTIMIZED = 0x00040000, 115 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000, 116 SCF_UNUSED = 0x00100000, 117 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000, 118 SCF_EMULATE_CDB_ASYNC = 0x01000000, 119 }; 120 121 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 122 enum transport_lunflags_table { 123 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, 124 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, 125 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, 126 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, 127 }; 128 129 /* struct se_device->dev_status */ 130 enum transport_device_status_table { 131 TRANSPORT_DEVICE_ACTIVATED = 0x01, 132 TRANSPORT_DEVICE_DEACTIVATED = 0x02, 133 TRANSPORT_DEVICE_QUEUE_FULL = 0x04, 134 TRANSPORT_DEVICE_SHUTDOWN = 0x08, 135 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10, 136 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20, 137 }; 138 139 /* 140 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason 141 * to signal which ASC/ASCQ sense payload should be built. 142 */ 143 enum tcm_sense_reason_table { 144 TCM_NON_EXISTENT_LUN = 0x01, 145 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02, 146 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03, 147 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04, 148 TCM_SERVICE_CRC_ERROR = 0x05, 149 TCM_SNACK_REJECTED = 0x06, 150 TCM_SECTOR_COUNT_TOO_MANY = 0x07, 151 TCM_INVALID_CDB_FIELD = 0x08, 152 TCM_INVALID_PARAMETER_LIST = 0x09, 153 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a, 154 TCM_UNKNOWN_MODE_PAGE = 0x0b, 155 TCM_WRITE_PROTECTED = 0x0c, 156 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d, 157 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e, 158 TCM_CHECK_CONDITION_NOT_READY = 0x0f, 159 }; 160 161 struct se_obj { 162 atomic_t obj_access_count; 163 } ____cacheline_aligned; 164 165 /* 166 * Used by TCM Core internally to signal if ALUA emulation is enabled or 167 * disabled, or running in with TCM/pSCSI passthrough mode 168 */ 169 typedef enum { 170 SPC_ALUA_PASSTHROUGH, 171 SPC2_ALUA_DISABLED, 172 SPC3_ALUA_EMULATED 173 } t10_alua_index_t; 174 175 /* 176 * Used by TCM Core internally to signal if SAM Task Attribute emulation 177 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode 178 */ 179 typedef enum { 180 SAM_TASK_ATTR_PASSTHROUGH, 181 SAM_TASK_ATTR_UNTAGGED, 182 SAM_TASK_ATTR_EMULATED 183 } t10_task_attr_index_t; 184 185 /* 186 * Used for target SCSI statistics 187 */ 188 typedef enum { 189 SCSI_INST_INDEX, 190 SCSI_DEVICE_INDEX, 191 SCSI_AUTH_INTR_INDEX, 192 SCSI_INDEX_TYPE_MAX 193 } scsi_index_t; 194 195 struct se_cmd; 196 197 struct t10_alua { 198 t10_alua_index_t alua_type; 199 /* ALUA Target Port Group ID */ 200 u16 alua_tg_pt_gps_counter; 201 u32 alua_tg_pt_gps_count; 202 spinlock_t tg_pt_gps_lock; 203 struct se_subsystem_dev *t10_sub_dev; 204 /* Used for default ALUA Target Port Group */ 205 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 206 /* Used for default ALUA Target Port Group ConfigFS group */ 207 struct config_group alua_tg_pt_gps_group; 208 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *); 209 struct list_head tg_pt_gps_list; 210 } ____cacheline_aligned; 211 212 struct t10_alua_lu_gp { 213 u16 lu_gp_id; 214 int lu_gp_valid_id; 215 u32 lu_gp_members; 216 atomic_t lu_gp_shutdown; 217 atomic_t lu_gp_ref_cnt; 218 spinlock_t lu_gp_lock; 219 struct config_group lu_gp_group; 220 struct list_head lu_gp_node; 221 struct list_head lu_gp_mem_list; 222 } ____cacheline_aligned; 223 224 struct t10_alua_lu_gp_member { 225 bool lu_gp_assoc; 226 atomic_t lu_gp_mem_ref_cnt; 227 spinlock_t lu_gp_mem_lock; 228 struct t10_alua_lu_gp *lu_gp; 229 struct se_device *lu_gp_mem_dev; 230 struct list_head lu_gp_mem_list; 231 } ____cacheline_aligned; 232 233 struct t10_alua_tg_pt_gp { 234 u16 tg_pt_gp_id; 235 int tg_pt_gp_valid_id; 236 int tg_pt_gp_alua_access_status; 237 int tg_pt_gp_alua_access_type; 238 int tg_pt_gp_nonop_delay_msecs; 239 int tg_pt_gp_trans_delay_msecs; 240 int tg_pt_gp_pref; 241 int tg_pt_gp_write_metadata; 242 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ 243 #define ALUA_MD_BUF_LEN 1024 244 u32 tg_pt_gp_md_buf_len; 245 u32 tg_pt_gp_members; 246 atomic_t tg_pt_gp_alua_access_state; 247 atomic_t tg_pt_gp_ref_cnt; 248 spinlock_t tg_pt_gp_lock; 249 struct mutex tg_pt_gp_md_mutex; 250 struct se_subsystem_dev *tg_pt_gp_su_dev; 251 struct config_group tg_pt_gp_group; 252 struct list_head tg_pt_gp_list; 253 struct list_head tg_pt_gp_mem_list; 254 } ____cacheline_aligned; 255 256 struct t10_alua_tg_pt_gp_member { 257 bool tg_pt_gp_assoc; 258 atomic_t tg_pt_gp_mem_ref_cnt; 259 spinlock_t tg_pt_gp_mem_lock; 260 struct t10_alua_tg_pt_gp *tg_pt_gp; 261 struct se_port *tg_pt; 262 struct list_head tg_pt_gp_mem_list; 263 } ____cacheline_aligned; 264 265 struct t10_vpd { 266 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 267 int protocol_identifier_set; 268 u32 protocol_identifier; 269 u32 device_identifier_code_set; 270 u32 association; 271 u32 device_identifier_type; 272 struct list_head vpd_list; 273 } ____cacheline_aligned; 274 275 struct t10_wwn { 276 char vendor[8]; 277 char model[16]; 278 char revision[4]; 279 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 280 spinlock_t t10_vpd_lock; 281 struct se_subsystem_dev *t10_sub_dev; 282 struct config_group t10_wwn_group; 283 struct list_head t10_vpd_list; 284 } ____cacheline_aligned; 285 286 287 /* 288 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations 289 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough 290 * mode 291 */ 292 typedef enum { 293 SPC_PASSTHROUGH, 294 SPC2_RESERVATIONS, 295 SPC3_PERSISTENT_RESERVATIONS 296 } t10_reservations_index_t; 297 298 struct t10_pr_registration { 299 /* Used for fabrics that contain WWN+ISID */ 300 #define PR_REG_ISID_LEN 16 301 /* PR_REG_ISID_LEN + ',i,0x' */ 302 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 303 char pr_reg_isid[PR_REG_ISID_LEN]; 304 /* Used during APTPL metadata reading */ 305 #define PR_APTPL_MAX_IPORT_LEN 256 306 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 307 /* Used during APTPL metadata reading */ 308 #define PR_APTPL_MAX_TPORT_LEN 256 309 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 310 /* For writing out live meta data */ 311 unsigned char *pr_aptpl_buf; 312 u16 pr_aptpl_rpti; 313 u16 pr_reg_tpgt; 314 /* Reservation effects all target ports */ 315 int pr_reg_all_tg_pt; 316 /* Activate Persistence across Target Power Loss */ 317 int pr_reg_aptpl; 318 int pr_res_holder; 319 int pr_res_type; 320 int pr_res_scope; 321 /* Used for fabric initiator WWPNs using a ISID */ 322 bool isid_present_at_reg; 323 u32 pr_res_mapped_lun; 324 u32 pr_aptpl_target_lun; 325 u32 pr_res_generation; 326 u64 pr_reg_bin_isid; 327 u64 pr_res_key; 328 atomic_t pr_res_holders; 329 struct se_node_acl *pr_reg_nacl; 330 struct se_dev_entry *pr_reg_deve; 331 struct se_lun *pr_reg_tg_pt_lun; 332 struct list_head pr_reg_list; 333 struct list_head pr_reg_abort_list; 334 struct list_head pr_reg_aptpl_list; 335 struct list_head pr_reg_atp_list; 336 struct list_head pr_reg_atp_mem_list; 337 } ____cacheline_aligned; 338 339 /* 340 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS, 341 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c: 342 * core_setup_reservations() 343 */ 344 struct t10_reservation_ops { 345 int (*t10_reservation_check)(struct se_cmd *, u32 *); 346 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32); 347 int (*t10_pr_register)(struct se_cmd *); 348 int (*t10_pr_clear)(struct se_cmd *); 349 }; 350 351 struct t10_reservation { 352 /* Reservation effects all target ports */ 353 int pr_all_tg_pt; 354 /* Activate Persistence across Target Power Loss enabled 355 * for SCSI device */ 356 int pr_aptpl_active; 357 /* Used by struct t10_reservation->pr_aptpl_buf_len */ 358 #define PR_APTPL_BUF_LEN 8192 359 u32 pr_aptpl_buf_len; 360 u32 pr_generation; 361 t10_reservations_index_t res_type; 362 spinlock_t registration_lock; 363 spinlock_t aptpl_reg_lock; 364 /* 365 * This will always be set by one individual I_T Nexus. 366 * However with all_tg_pt=1, other I_T Nexus from the 367 * same initiator can access PR reg/res info on a different 368 * target port. 369 * 370 * There is also the 'All Registrants' case, where there is 371 * a single *pr_res_holder of the reservation, but all 372 * registrations are considered reservation holders. 373 */ 374 struct se_node_acl *pr_res_holder; 375 struct list_head registration_list; 376 struct list_head aptpl_reg_list; 377 struct t10_reservation_ops pr_ops; 378 } ____cacheline_aligned; 379 380 struct se_queue_req { 381 int state; 382 struct se_cmd *cmd; 383 struct list_head qr_list; 384 } ____cacheline_aligned; 385 386 struct se_queue_obj { 387 atomic_t queue_cnt; 388 spinlock_t cmd_queue_lock; 389 struct list_head qobj_list; 390 wait_queue_head_t thread_wq; 391 } ____cacheline_aligned; 392 393 struct se_task { 394 unsigned long long task_lba; 395 u32 task_sectors; 396 u32 task_size; 397 struct se_cmd *task_se_cmd; 398 struct scatterlist *task_sg; 399 u32 task_sg_nents; 400 u16 task_flags; 401 u8 task_sense; 402 u8 task_scsi_status; 403 int task_error_status; 404 enum dma_data_direction task_data_direction; 405 atomic_t task_state_active; 406 struct list_head t_list; 407 struct list_head t_execute_list; 408 struct list_head t_state_list; 409 struct completion task_stop_comp; 410 } ____cacheline_aligned; 411 412 struct se_cmd { 413 /* SAM response code being sent to initiator */ 414 u8 scsi_status; 415 u8 scsi_asc; 416 u8 scsi_ascq; 417 u8 scsi_sense_reason; 418 u16 scsi_sense_length; 419 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 420 int alua_nonop_delay; 421 /* See include/linux/dma-mapping.h */ 422 enum dma_data_direction data_direction; 423 /* For SAM Task Attribute */ 424 int sam_task_attr; 425 /* Transport protocol dependent state, see transport_state_table */ 426 enum transport_state_table t_state; 427 /* Transport specific error status */ 428 int transport_error_status; 429 /* See se_cmd_flags_table */ 430 u32 se_cmd_flags; 431 u32 se_ordered_id; 432 /* Total size in bytes associated with command */ 433 u32 data_length; 434 /* SCSI Presented Data Transfer Length */ 435 u32 cmd_spdtl; 436 u32 residual_count; 437 u32 orig_fe_lun; 438 /* Persistent Reservation key */ 439 u64 pr_res_key; 440 /* Used for sense data */ 441 void *sense_buffer; 442 struct list_head se_delayed_node; 443 struct list_head se_ordered_node; 444 struct list_head se_lun_node; 445 struct list_head se_qf_node; 446 struct se_device *se_dev; 447 struct se_dev_entry *se_deve; 448 struct se_device *se_obj_ptr; 449 struct se_device *se_orig_obj_ptr; 450 struct se_lun *se_lun; 451 /* Only used for internal passthrough and legacy TCM fabric modules */ 452 struct se_session *se_sess; 453 struct se_tmr_req *se_tmr_req; 454 struct list_head se_queue_node; 455 struct target_core_fabric_ops *se_tfo; 456 int (*transport_emulate_cdb)(struct se_cmd *); 457 void (*transport_complete_callback)(struct se_cmd *); 458 459 unsigned char *t_task_cdb; 460 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 461 unsigned long long t_task_lba; 462 int t_tasks_failed; 463 int t_tasks_fua; 464 bool t_tasks_bidi; 465 u32 t_tasks_sg_chained_no; 466 atomic_t t_fe_count; 467 atomic_t t_se_count; 468 atomic_t t_task_cdbs_left; 469 atomic_t t_task_cdbs_ex_left; 470 atomic_t t_task_cdbs_sent; 471 atomic_t t_transport_aborted; 472 atomic_t t_transport_active; 473 atomic_t t_transport_complete; 474 atomic_t t_transport_queue_active; 475 atomic_t t_transport_sent; 476 atomic_t t_transport_stop; 477 atomic_t transport_dev_active; 478 atomic_t transport_lun_active; 479 atomic_t transport_lun_fe_stop; 480 atomic_t transport_lun_stop; 481 spinlock_t t_state_lock; 482 struct completion t_transport_stop_comp; 483 struct completion transport_lun_fe_stop_comp; 484 struct completion transport_lun_stop_comp; 485 struct scatterlist *t_tasks_sg_chained; 486 487 struct work_struct work; 488 489 /* 490 * Used for pre-registered fabric SGL passthrough WRITE and READ 491 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop 492 * and other HW target mode fabric modules. 493 */ 494 struct scatterlist *t_task_pt_sgl; 495 u32 t_task_pt_sgl_num; 496 497 struct scatterlist *t_data_sg; 498 unsigned int t_data_nents; 499 struct scatterlist *t_bidi_data_sg; 500 unsigned int t_bidi_data_nents; 501 502 /* Used for BIDI READ */ 503 struct list_head t_task_list; 504 u32 t_task_list_num; 505 506 } ____cacheline_aligned; 507 508 struct se_tmr_req { 509 /* Task Management function to be preformed */ 510 u8 function; 511 /* Task Management response to send */ 512 u8 response; 513 int call_transport; 514 /* Reference to ITT that Task Mgmt should be preformed */ 515 u32 ref_task_tag; 516 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */ 517 u64 ref_task_lun; 518 void *fabric_tmr_ptr; 519 struct se_cmd *task_cmd; 520 struct se_cmd *ref_cmd; 521 struct se_device *tmr_dev; 522 struct se_lun *tmr_lun; 523 struct list_head tmr_list; 524 } ____cacheline_aligned; 525 526 struct se_ua { 527 u8 ua_asc; 528 u8 ua_ascq; 529 struct se_node_acl *ua_nacl; 530 struct list_head ua_dev_list; 531 struct list_head ua_nacl_list; 532 } ____cacheline_aligned; 533 534 struct se_node_acl { 535 char initiatorname[TRANSPORT_IQN_LEN]; 536 /* Used to signal demo mode created ACL, disabled by default */ 537 bool dynamic_node_acl; 538 u32 queue_depth; 539 u32 acl_index; 540 u64 num_cmds; 541 u64 read_bytes; 542 u64 write_bytes; 543 spinlock_t stats_lock; 544 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 545 atomic_t acl_pr_ref_count; 546 struct se_dev_entry *device_list; 547 struct se_session *nacl_sess; 548 struct se_portal_group *se_tpg; 549 spinlock_t device_list_lock; 550 spinlock_t nacl_sess_lock; 551 struct config_group acl_group; 552 struct config_group acl_attrib_group; 553 struct config_group acl_auth_group; 554 struct config_group acl_param_group; 555 struct config_group acl_fabric_stat_group; 556 struct config_group *acl_default_groups[5]; 557 struct list_head acl_list; 558 struct list_head acl_sess_list; 559 } ____cacheline_aligned; 560 561 struct se_session { 562 u64 sess_bin_isid; 563 struct se_node_acl *se_node_acl; 564 struct se_portal_group *se_tpg; 565 void *fabric_sess_ptr; 566 struct list_head sess_list; 567 struct list_head sess_acl_list; 568 } ____cacheline_aligned; 569 570 struct se_device; 571 struct se_transform_info; 572 struct scatterlist; 573 574 struct se_ml_stat_grps { 575 struct config_group stat_group; 576 struct config_group scsi_auth_intr_group; 577 struct config_group scsi_att_intr_port_group; 578 }; 579 580 struct se_lun_acl { 581 char initiatorname[TRANSPORT_IQN_LEN]; 582 u32 mapped_lun; 583 struct se_node_acl *se_lun_nacl; 584 struct se_lun *se_lun; 585 struct list_head lacl_list; 586 struct config_group se_lun_group; 587 struct se_ml_stat_grps ml_stat_grps; 588 } ____cacheline_aligned; 589 590 struct se_dev_entry { 591 bool def_pr_registered; 592 /* See transport_lunflags_table */ 593 u32 lun_flags; 594 u32 deve_cmds; 595 u32 mapped_lun; 596 u32 average_bytes; 597 u32 last_byte_count; 598 u32 total_cmds; 599 u32 total_bytes; 600 u64 pr_res_key; 601 u64 creation_time; 602 u32 attach_count; 603 u64 read_bytes; 604 u64 write_bytes; 605 atomic_t ua_count; 606 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 607 atomic_t pr_ref_count; 608 struct se_lun_acl *se_lun_acl; 609 spinlock_t ua_lock; 610 struct se_lun *se_lun; 611 struct list_head alua_port_list; 612 struct list_head ua_list; 613 } ____cacheline_aligned; 614 615 struct se_dev_limits { 616 /* Max supported HW queue depth */ 617 u32 hw_queue_depth; 618 /* Max supported virtual queue depth */ 619 u32 queue_depth; 620 /* From include/linux/blkdev.h for the other HW/SW limits. */ 621 struct queue_limits limits; 622 } ____cacheline_aligned; 623 624 struct se_dev_attrib { 625 int emulate_dpo; 626 int emulate_fua_write; 627 int emulate_fua_read; 628 int emulate_write_cache; 629 int emulate_ua_intlck_ctrl; 630 int emulate_tas; 631 int emulate_tpu; 632 int emulate_tpws; 633 int emulate_reservations; 634 int emulate_alua; 635 int enforce_pr_isids; 636 int is_nonrot; 637 int emulate_rest_reord; 638 u32 hw_block_size; 639 u32 block_size; 640 u32 hw_max_sectors; 641 u32 max_sectors; 642 u32 optimal_sectors; 643 u32 hw_queue_depth; 644 u32 queue_depth; 645 u32 max_unmap_lba_count; 646 u32 max_unmap_block_desc_count; 647 u32 unmap_granularity; 648 u32 unmap_granularity_alignment; 649 struct se_subsystem_dev *da_sub_dev; 650 struct config_group da_group; 651 } ____cacheline_aligned; 652 653 struct se_dev_stat_grps { 654 struct config_group stat_group; 655 struct config_group scsi_dev_group; 656 struct config_group scsi_tgt_dev_group; 657 struct config_group scsi_lu_group; 658 }; 659 660 struct se_subsystem_dev { 661 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */ 662 #define SE_DEV_ALIAS_LEN 512 663 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN]; 664 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */ 665 #define SE_UDEV_PATH_LEN 512 666 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN]; 667 u32 su_dev_flags; 668 struct se_hba *se_dev_hba; 669 struct se_device *se_dev_ptr; 670 struct se_dev_attrib se_dev_attrib; 671 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 672 struct t10_alua t10_alua; 673 /* T10 Inquiry and VPD WWN Information */ 674 struct t10_wwn t10_wwn; 675 /* T10 SPC-2 + SPC-3 Reservations */ 676 struct t10_reservation t10_pr; 677 spinlock_t se_dev_lock; 678 void *se_dev_su_ptr; 679 struct list_head se_dev_node; 680 struct config_group se_dev_group; 681 /* For T10 Reservations */ 682 struct config_group se_dev_pr_group; 683 /* For target_core_stat.c groups */ 684 struct se_dev_stat_grps dev_stat_grps; 685 } ____cacheline_aligned; 686 687 struct se_device { 688 /* Set to 1 if thread is NOT sleeping on thread_sem */ 689 u8 thread_active; 690 u8 dev_status_timer_flags; 691 /* RELATIVE TARGET PORT IDENTIFER Counter */ 692 u16 dev_rpti_counter; 693 /* Used for SAM Task Attribute ordering */ 694 u32 dev_cur_ordered_id; 695 u32 dev_flags; 696 u32 dev_port_count; 697 /* See transport_device_status_table */ 698 u32 dev_status; 699 u32 dev_tcq_window_closed; 700 /* Physical device queue depth */ 701 u32 queue_depth; 702 /* Used for SPC-2 reservations enforce of ISIDs */ 703 u64 dev_res_bin_isid; 704 t10_task_attr_index_t dev_task_attr_type; 705 /* Pointer to transport specific device structure */ 706 void *dev_ptr; 707 u32 dev_index; 708 u64 creation_time; 709 u32 num_resets; 710 u64 num_cmds; 711 u64 read_bytes; 712 u64 write_bytes; 713 spinlock_t stats_lock; 714 /* Active commands on this virtual SE device */ 715 atomic_t active_cmds; 716 atomic_t simple_cmds; 717 atomic_t depth_left; 718 atomic_t dev_ordered_id; 719 atomic_t dev_tur_active; 720 atomic_t execute_tasks; 721 atomic_t dev_status_thr_count; 722 atomic_t dev_hoq_count; 723 atomic_t dev_ordered_sync; 724 atomic_t dev_qf_count; 725 struct se_obj dev_obj; 726 struct se_obj dev_access_obj; 727 struct se_obj dev_export_obj; 728 struct se_queue_obj dev_queue_obj; 729 spinlock_t delayed_cmd_lock; 730 spinlock_t ordered_cmd_lock; 731 spinlock_t execute_task_lock; 732 spinlock_t state_task_lock; 733 spinlock_t dev_alua_lock; 734 spinlock_t dev_reservation_lock; 735 spinlock_t dev_state_lock; 736 spinlock_t dev_status_lock; 737 spinlock_t dev_status_thr_lock; 738 spinlock_t se_port_lock; 739 spinlock_t se_tmr_lock; 740 spinlock_t qf_cmd_lock; 741 /* Used for legacy SPC-2 reservationsa */ 742 struct se_node_acl *dev_reserved_node_acl; 743 /* Used for ALUA Logical Unit Group membership */ 744 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 745 /* Used for SPC-3 Persistent Reservations */ 746 struct t10_pr_registration *dev_pr_res_holder; 747 struct list_head dev_sep_list; 748 struct list_head dev_tmr_list; 749 struct timer_list dev_status_timer; 750 /* Pointer to descriptor for processing thread */ 751 struct task_struct *process_thread; 752 pid_t process_thread_pid; 753 struct task_struct *dev_mgmt_thread; 754 struct work_struct qf_work_queue; 755 struct list_head delayed_cmd_list; 756 struct list_head ordered_cmd_list; 757 struct list_head execute_task_list; 758 struct list_head state_task_list; 759 struct list_head qf_cmd_list; 760 /* Pointer to associated SE HBA */ 761 struct se_hba *se_hba; 762 struct se_subsystem_dev *se_sub_dev; 763 /* Pointer to template of function pointers for transport */ 764 struct se_subsystem_api *transport; 765 /* Linked list for struct se_hba struct se_device list */ 766 struct list_head dev_list; 767 /* Linked list for struct se_global->g_se_dev_list */ 768 struct list_head g_se_dev_list; 769 } ____cacheline_aligned; 770 771 struct se_hba { 772 u16 hba_tpgt; 773 u32 hba_id; 774 /* See hba_flags_table */ 775 u32 hba_flags; 776 /* Virtual iSCSI devices attached. */ 777 u32 dev_count; 778 u32 hba_index; 779 /* Pointer to transport specific host structure. */ 780 void *hba_ptr; 781 /* Linked list for struct se_device */ 782 struct list_head hba_dev_list; 783 struct list_head hba_node; 784 spinlock_t device_lock; 785 struct config_group hba_group; 786 struct mutex hba_access_mutex; 787 struct se_subsystem_api *transport; 788 } ____cacheline_aligned; 789 790 struct se_port_stat_grps { 791 struct config_group stat_group; 792 struct config_group scsi_port_group; 793 struct config_group scsi_tgt_port_group; 794 struct config_group scsi_transport_group; 795 }; 796 797 struct se_lun { 798 /* See transport_lun_status_table */ 799 enum transport_lun_status_table lun_status; 800 u32 lun_access; 801 u32 lun_flags; 802 u32 unpacked_lun; 803 atomic_t lun_acl_count; 804 spinlock_t lun_acl_lock; 805 spinlock_t lun_cmd_lock; 806 spinlock_t lun_sep_lock; 807 struct completion lun_shutdown_comp; 808 struct list_head lun_cmd_list; 809 struct list_head lun_acl_list; 810 struct se_device *lun_se_dev; 811 struct se_port *lun_sep; 812 struct config_group lun_group; 813 struct se_port_stat_grps port_stat_grps; 814 } ____cacheline_aligned; 815 816 struct scsi_port_stats { 817 u64 cmd_pdus; 818 u64 tx_data_octets; 819 u64 rx_data_octets; 820 } ____cacheline_aligned; 821 822 struct se_port { 823 /* RELATIVE TARGET PORT IDENTIFER */ 824 u16 sep_rtpi; 825 int sep_tg_pt_secondary_stat; 826 int sep_tg_pt_secondary_write_md; 827 u32 sep_index; 828 struct scsi_port_stats sep_stats; 829 /* Used for ALUA Target Port Groups membership */ 830 atomic_t sep_tg_pt_gp_active; 831 atomic_t sep_tg_pt_secondary_offline; 832 /* Used for PR ALL_TG_PT=1 */ 833 atomic_t sep_tg_pt_ref_cnt; 834 spinlock_t sep_alua_lock; 835 struct mutex sep_tg_pt_md_mutex; 836 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; 837 struct se_lun *sep_lun; 838 struct se_portal_group *sep_tpg; 839 struct list_head sep_alua_list; 840 struct list_head sep_list; 841 } ____cacheline_aligned; 842 843 struct se_tpg_np { 844 struct se_portal_group *tpg_np_parent; 845 struct config_group tpg_np_group; 846 } ____cacheline_aligned; 847 848 struct se_portal_group { 849 /* Type of target portal group, see transport_tpg_type_table */ 850 enum transport_tpg_type_table se_tpg_type; 851 /* Number of ACLed Initiator Nodes for this TPG */ 852 u32 num_node_acls; 853 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 854 atomic_t tpg_pr_ref_count; 855 /* Spinlock for adding/removing ACLed Nodes */ 856 spinlock_t acl_node_lock; 857 /* Spinlock for adding/removing sessions */ 858 spinlock_t session_lock; 859 spinlock_t tpg_lun_lock; 860 /* Pointer to $FABRIC_MOD portal group */ 861 void *se_tpg_fabric_ptr; 862 struct list_head se_tpg_node; 863 /* linked list for initiator ACL list */ 864 struct list_head acl_node_list; 865 struct se_lun *tpg_lun_list; 866 struct se_lun tpg_virt_lun0; 867 /* List of TCM sessions associated wth this TPG */ 868 struct list_head tpg_sess_list; 869 /* Pointer to $FABRIC_MOD dependent code */ 870 struct target_core_fabric_ops *se_tpg_tfo; 871 struct se_wwn *se_tpg_wwn; 872 struct config_group tpg_group; 873 struct config_group *tpg_default_groups[6]; 874 struct config_group tpg_lun_group; 875 struct config_group tpg_np_group; 876 struct config_group tpg_acl_group; 877 struct config_group tpg_attrib_group; 878 struct config_group tpg_param_group; 879 } ____cacheline_aligned; 880 881 struct se_wwn { 882 struct target_fabric_configfs *wwn_tf; 883 struct config_group wwn_group; 884 struct config_group *wwn_default_groups[2]; 885 struct config_group fabric_stat_group; 886 } ____cacheline_aligned; 887 888 #endif /* TARGET_CORE_BASE_H */ 889