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_COMPLETE_QF_WP = 18, 93 TRANSPORT_COMPLETE_QF_OK = 19, 94 }; 95 96 /* Used for struct se_cmd->se_cmd_flags */ 97 enum se_cmd_flags_table { 98 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 99 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 100 SCF_EMULATED_TASK_SENSE = 0x00000004, 101 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008, 102 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010, 103 SCF_SCSI_NON_DATA_CDB = 0x00000040, 104 SCF_SCSI_CDB_EXCEPTION = 0x00000080, 105 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100, 106 SCF_FUA = 0x00000200, 107 SCF_SE_LUN_CMD = 0x00000800, 108 SCF_SE_ALLOW_EOO = 0x00001000, 109 SCF_BIDI = 0x00002000, 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 }; 119 120 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 121 enum transport_lunflags_table { 122 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, 123 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, 124 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, 125 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, 126 }; 127 128 /* struct se_device->dev_status */ 129 enum transport_device_status_table { 130 TRANSPORT_DEVICE_ACTIVATED = 0x01, 131 TRANSPORT_DEVICE_DEACTIVATED = 0x02, 132 TRANSPORT_DEVICE_QUEUE_FULL = 0x04, 133 TRANSPORT_DEVICE_SHUTDOWN = 0x08, 134 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10, 135 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20, 136 }; 137 138 /* 139 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason 140 * to signal which ASC/ASCQ sense payload should be built. 141 */ 142 enum tcm_sense_reason_table { 143 TCM_NON_EXISTENT_LUN = 0x01, 144 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02, 145 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03, 146 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04, 147 TCM_SERVICE_CRC_ERROR = 0x05, 148 TCM_SNACK_REJECTED = 0x06, 149 TCM_SECTOR_COUNT_TOO_MANY = 0x07, 150 TCM_INVALID_CDB_FIELD = 0x08, 151 TCM_INVALID_PARAMETER_LIST = 0x09, 152 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a, 153 TCM_UNKNOWN_MODE_PAGE = 0x0b, 154 TCM_WRITE_PROTECTED = 0x0c, 155 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d, 156 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e, 157 TCM_CHECK_CONDITION_NOT_READY = 0x0f, 158 TCM_RESERVATION_CONFLICT = 0x10, 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_ref_cnt; 217 spinlock_t lu_gp_lock; 218 struct config_group lu_gp_group; 219 struct list_head lu_gp_node; 220 struct list_head lu_gp_mem_list; 221 } ____cacheline_aligned; 222 223 struct t10_alua_lu_gp_member { 224 bool lu_gp_assoc; 225 atomic_t lu_gp_mem_ref_cnt; 226 spinlock_t lu_gp_mem_lock; 227 struct t10_alua_lu_gp *lu_gp; 228 struct se_device *lu_gp_mem_dev; 229 struct list_head lu_gp_mem_list; 230 } ____cacheline_aligned; 231 232 struct t10_alua_tg_pt_gp { 233 u16 tg_pt_gp_id; 234 int tg_pt_gp_valid_id; 235 int tg_pt_gp_alua_access_status; 236 int tg_pt_gp_alua_access_type; 237 int tg_pt_gp_nonop_delay_msecs; 238 int tg_pt_gp_trans_delay_msecs; 239 int tg_pt_gp_pref; 240 int tg_pt_gp_write_metadata; 241 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ 242 #define ALUA_MD_BUF_LEN 1024 243 u32 tg_pt_gp_md_buf_len; 244 u32 tg_pt_gp_members; 245 atomic_t tg_pt_gp_alua_access_state; 246 atomic_t tg_pt_gp_ref_cnt; 247 spinlock_t tg_pt_gp_lock; 248 struct mutex tg_pt_gp_md_mutex; 249 struct se_subsystem_dev *tg_pt_gp_su_dev; 250 struct config_group tg_pt_gp_group; 251 struct list_head tg_pt_gp_list; 252 struct list_head tg_pt_gp_mem_list; 253 } ____cacheline_aligned; 254 255 struct t10_alua_tg_pt_gp_member { 256 bool tg_pt_gp_assoc; 257 atomic_t tg_pt_gp_mem_ref_cnt; 258 spinlock_t tg_pt_gp_mem_lock; 259 struct t10_alua_tg_pt_gp *tg_pt_gp; 260 struct se_port *tg_pt; 261 struct list_head tg_pt_gp_mem_list; 262 } ____cacheline_aligned; 263 264 struct t10_vpd { 265 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 266 int protocol_identifier_set; 267 u32 protocol_identifier; 268 u32 device_identifier_code_set; 269 u32 association; 270 u32 device_identifier_type; 271 struct list_head vpd_list; 272 } ____cacheline_aligned; 273 274 struct t10_wwn { 275 char vendor[8]; 276 char model[16]; 277 char revision[4]; 278 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 279 spinlock_t t10_vpd_lock; 280 struct se_subsystem_dev *t10_sub_dev; 281 struct config_group t10_wwn_group; 282 struct list_head t10_vpd_list; 283 } ____cacheline_aligned; 284 285 286 /* 287 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations 288 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough 289 * mode 290 */ 291 typedef enum { 292 SPC_PASSTHROUGH, 293 SPC2_RESERVATIONS, 294 SPC3_PERSISTENT_RESERVATIONS 295 } t10_reservations_index_t; 296 297 struct t10_pr_registration { 298 /* Used for fabrics that contain WWN+ISID */ 299 #define PR_REG_ISID_LEN 16 300 /* PR_REG_ISID_LEN + ',i,0x' */ 301 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 302 char pr_reg_isid[PR_REG_ISID_LEN]; 303 /* Used during APTPL metadata reading */ 304 #define PR_APTPL_MAX_IPORT_LEN 256 305 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 306 /* Used during APTPL metadata reading */ 307 #define PR_APTPL_MAX_TPORT_LEN 256 308 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 309 /* For writing out live meta data */ 310 unsigned char *pr_aptpl_buf; 311 u16 pr_aptpl_rpti; 312 u16 pr_reg_tpgt; 313 /* Reservation effects all target ports */ 314 int pr_reg_all_tg_pt; 315 /* Activate Persistence across Target Power Loss */ 316 int pr_reg_aptpl; 317 int pr_res_holder; 318 int pr_res_type; 319 int pr_res_scope; 320 /* Used for fabric initiator WWPNs using a ISID */ 321 bool isid_present_at_reg; 322 u32 pr_res_mapped_lun; 323 u32 pr_aptpl_target_lun; 324 u32 pr_res_generation; 325 u64 pr_reg_bin_isid; 326 u64 pr_res_key; 327 atomic_t pr_res_holders; 328 struct se_node_acl *pr_reg_nacl; 329 struct se_dev_entry *pr_reg_deve; 330 struct se_lun *pr_reg_tg_pt_lun; 331 struct list_head pr_reg_list; 332 struct list_head pr_reg_abort_list; 333 struct list_head pr_reg_aptpl_list; 334 struct list_head pr_reg_atp_list; 335 struct list_head pr_reg_atp_mem_list; 336 } ____cacheline_aligned; 337 338 /* 339 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS, 340 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c: 341 * core_setup_reservations() 342 */ 343 struct t10_reservation_ops { 344 int (*t10_reservation_check)(struct se_cmd *, u32 *); 345 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32); 346 int (*t10_pr_register)(struct se_cmd *); 347 int (*t10_pr_clear)(struct se_cmd *); 348 }; 349 350 struct t10_reservation { 351 /* Reservation effects all target ports */ 352 int pr_all_tg_pt; 353 /* Activate Persistence across Target Power Loss enabled 354 * for SCSI device */ 355 int pr_aptpl_active; 356 /* Used by struct t10_reservation->pr_aptpl_buf_len */ 357 #define PR_APTPL_BUF_LEN 8192 358 u32 pr_aptpl_buf_len; 359 u32 pr_generation; 360 t10_reservations_index_t res_type; 361 spinlock_t registration_lock; 362 spinlock_t aptpl_reg_lock; 363 /* 364 * This will always be set by one individual I_T Nexus. 365 * However with all_tg_pt=1, other I_T Nexus from the 366 * same initiator can access PR reg/res info on a different 367 * target port. 368 * 369 * There is also the 'All Registrants' case, where there is 370 * a single *pr_res_holder of the reservation, but all 371 * registrations are considered reservation holders. 372 */ 373 struct se_node_acl *pr_res_holder; 374 struct list_head registration_list; 375 struct list_head aptpl_reg_list; 376 struct t10_reservation_ops pr_ops; 377 } ____cacheline_aligned; 378 379 struct se_queue_req { 380 int state; 381 struct se_cmd *cmd; 382 struct list_head qr_list; 383 } ____cacheline_aligned; 384 385 struct se_queue_obj { 386 atomic_t queue_cnt; 387 spinlock_t cmd_queue_lock; 388 struct list_head qobj_list; 389 wait_queue_head_t thread_wq; 390 } ____cacheline_aligned; 391 392 struct se_task { 393 unsigned long long task_lba; 394 u32 task_sectors; 395 u32 task_size; 396 struct se_cmd *task_se_cmd; 397 struct scatterlist *task_sg; 398 u32 task_sg_nents; 399 u16 task_flags; 400 u8 task_sense; 401 u8 task_scsi_status; 402 int task_error_status; 403 enum dma_data_direction task_data_direction; 404 atomic_t task_state_active; 405 struct list_head t_list; 406 struct list_head t_execute_list; 407 struct list_head t_state_list; 408 struct completion task_stop_comp; 409 } ____cacheline_aligned; 410 411 struct se_cmd { 412 /* SAM response code being sent to initiator */ 413 u8 scsi_status; 414 u8 scsi_asc; 415 u8 scsi_ascq; 416 u8 scsi_sense_reason; 417 u16 scsi_sense_length; 418 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 419 int alua_nonop_delay; 420 /* See include/linux/dma-mapping.h */ 421 enum dma_data_direction data_direction; 422 /* For SAM Task Attribute */ 423 int sam_task_attr; 424 /* Transport protocol dependent state, see transport_state_table */ 425 enum transport_state_table t_state; 426 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */ 427 unsigned check_release:1; 428 unsigned cmd_wait_set:1; 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_lun_node; 444 struct list_head se_qf_node; 445 struct se_device *se_dev; 446 struct se_dev_entry *se_deve; 447 struct se_lun *se_lun; 448 /* Only used for internal passthrough and legacy TCM fabric modules */ 449 struct se_session *se_sess; 450 struct se_tmr_req *se_tmr_req; 451 struct list_head se_queue_node; 452 struct list_head se_cmd_list; 453 struct completion cmd_wait_comp; 454 struct target_core_fabric_ops *se_tfo; 455 int (*execute_task)(struct se_task *); 456 void (*transport_complete_callback)(struct se_cmd *); 457 458 unsigned char *t_task_cdb; 459 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 460 unsigned long long t_task_lba; 461 int t_tasks_failed; 462 u32 t_tasks_sg_chained_no; 463 atomic_t t_fe_count; 464 atomic_t t_se_count; 465 atomic_t t_task_cdbs_left; 466 atomic_t t_task_cdbs_ex_left; 467 atomic_t t_task_cdbs_sent; 468 atomic_t t_transport_aborted; 469 atomic_t t_transport_active; 470 atomic_t t_transport_complete; 471 atomic_t t_transport_queue_active; 472 atomic_t t_transport_sent; 473 atomic_t t_transport_stop; 474 atomic_t transport_dev_active; 475 atomic_t transport_lun_active; 476 atomic_t transport_lun_fe_stop; 477 atomic_t transport_lun_stop; 478 spinlock_t t_state_lock; 479 struct completion t_transport_stop_comp; 480 struct completion transport_lun_fe_stop_comp; 481 struct completion transport_lun_stop_comp; 482 struct scatterlist *t_tasks_sg_chained; 483 484 struct work_struct work; 485 486 struct scatterlist *t_data_sg; 487 unsigned int t_data_nents; 488 struct scatterlist *t_bidi_data_sg; 489 unsigned int t_bidi_data_nents; 490 491 /* Used for BIDI READ */ 492 struct list_head t_task_list; 493 u32 t_task_list_num; 494 495 } ____cacheline_aligned; 496 497 struct se_tmr_req { 498 /* Task Management function to be preformed */ 499 u8 function; 500 /* Task Management response to send */ 501 u8 response; 502 int call_transport; 503 /* Reference to ITT that Task Mgmt should be preformed */ 504 u32 ref_task_tag; 505 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */ 506 u64 ref_task_lun; 507 void *fabric_tmr_ptr; 508 struct se_cmd *task_cmd; 509 struct se_cmd *ref_cmd; 510 struct se_device *tmr_dev; 511 struct se_lun *tmr_lun; 512 struct list_head tmr_list; 513 } ____cacheline_aligned; 514 515 struct se_ua { 516 u8 ua_asc; 517 u8 ua_ascq; 518 struct se_node_acl *ua_nacl; 519 struct list_head ua_dev_list; 520 struct list_head ua_nacl_list; 521 } ____cacheline_aligned; 522 523 struct se_node_acl { 524 char initiatorname[TRANSPORT_IQN_LEN]; 525 /* Used to signal demo mode created ACL, disabled by default */ 526 bool dynamic_node_acl; 527 u32 queue_depth; 528 u32 acl_index; 529 u64 num_cmds; 530 u64 read_bytes; 531 u64 write_bytes; 532 spinlock_t stats_lock; 533 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 534 atomic_t acl_pr_ref_count; 535 struct se_dev_entry *device_list; 536 struct se_session *nacl_sess; 537 struct se_portal_group *se_tpg; 538 spinlock_t device_list_lock; 539 spinlock_t nacl_sess_lock; 540 struct config_group acl_group; 541 struct config_group acl_attrib_group; 542 struct config_group acl_auth_group; 543 struct config_group acl_param_group; 544 struct config_group acl_fabric_stat_group; 545 struct config_group *acl_default_groups[5]; 546 struct list_head acl_list; 547 struct list_head acl_sess_list; 548 } ____cacheline_aligned; 549 550 struct se_session { 551 unsigned sess_tearing_down:1; 552 u64 sess_bin_isid; 553 struct se_node_acl *se_node_acl; 554 struct se_portal_group *se_tpg; 555 void *fabric_sess_ptr; 556 struct list_head sess_list; 557 struct list_head sess_acl_list; 558 struct list_head sess_cmd_list; 559 struct list_head sess_wait_list; 560 spinlock_t sess_cmd_lock; 561 } ____cacheline_aligned; 562 563 struct se_device; 564 struct se_transform_info; 565 struct scatterlist; 566 567 struct se_ml_stat_grps { 568 struct config_group stat_group; 569 struct config_group scsi_auth_intr_group; 570 struct config_group scsi_att_intr_port_group; 571 }; 572 573 struct se_lun_acl { 574 char initiatorname[TRANSPORT_IQN_LEN]; 575 u32 mapped_lun; 576 struct se_node_acl *se_lun_nacl; 577 struct se_lun *se_lun; 578 struct list_head lacl_list; 579 struct config_group se_lun_group; 580 struct se_ml_stat_grps ml_stat_grps; 581 } ____cacheline_aligned; 582 583 struct se_dev_entry { 584 bool def_pr_registered; 585 /* See transport_lunflags_table */ 586 u32 lun_flags; 587 u32 deve_cmds; 588 u32 mapped_lun; 589 u32 average_bytes; 590 u32 last_byte_count; 591 u32 total_cmds; 592 u32 total_bytes; 593 u64 pr_res_key; 594 u64 creation_time; 595 u32 attach_count; 596 u64 read_bytes; 597 u64 write_bytes; 598 atomic_t ua_count; 599 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 600 atomic_t pr_ref_count; 601 struct se_lun_acl *se_lun_acl; 602 spinlock_t ua_lock; 603 struct se_lun *se_lun; 604 struct list_head alua_port_list; 605 struct list_head ua_list; 606 } ____cacheline_aligned; 607 608 struct se_dev_limits { 609 /* Max supported HW queue depth */ 610 u32 hw_queue_depth; 611 /* Max supported virtual queue depth */ 612 u32 queue_depth; 613 /* From include/linux/blkdev.h for the other HW/SW limits. */ 614 struct queue_limits limits; 615 } ____cacheline_aligned; 616 617 struct se_dev_attrib { 618 int emulate_dpo; 619 int emulate_fua_write; 620 int emulate_fua_read; 621 int emulate_write_cache; 622 int emulate_ua_intlck_ctrl; 623 int emulate_tas; 624 int emulate_tpu; 625 int emulate_tpws; 626 int emulate_reservations; 627 int emulate_alua; 628 int enforce_pr_isids; 629 int is_nonrot; 630 int emulate_rest_reord; 631 u32 hw_block_size; 632 u32 block_size; 633 u32 hw_max_sectors; 634 u32 max_sectors; 635 u32 optimal_sectors; 636 u32 hw_queue_depth; 637 u32 queue_depth; 638 u32 max_unmap_lba_count; 639 u32 max_unmap_block_desc_count; 640 u32 unmap_granularity; 641 u32 unmap_granularity_alignment; 642 struct se_subsystem_dev *da_sub_dev; 643 struct config_group da_group; 644 } ____cacheline_aligned; 645 646 struct se_dev_stat_grps { 647 struct config_group stat_group; 648 struct config_group scsi_dev_group; 649 struct config_group scsi_tgt_dev_group; 650 struct config_group scsi_lu_group; 651 }; 652 653 struct se_subsystem_dev { 654 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */ 655 #define SE_DEV_ALIAS_LEN 512 656 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN]; 657 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */ 658 #define SE_UDEV_PATH_LEN 512 659 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN]; 660 u32 su_dev_flags; 661 struct se_hba *se_dev_hba; 662 struct se_device *se_dev_ptr; 663 struct se_dev_attrib se_dev_attrib; 664 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 665 struct t10_alua t10_alua; 666 /* T10 Inquiry and VPD WWN Information */ 667 struct t10_wwn t10_wwn; 668 /* T10 SPC-2 + SPC-3 Reservations */ 669 struct t10_reservation t10_pr; 670 spinlock_t se_dev_lock; 671 void *se_dev_su_ptr; 672 struct config_group se_dev_group; 673 /* For T10 Reservations */ 674 struct config_group se_dev_pr_group; 675 /* For target_core_stat.c groups */ 676 struct se_dev_stat_grps dev_stat_grps; 677 } ____cacheline_aligned; 678 679 struct se_device { 680 /* RELATIVE TARGET PORT IDENTIFER Counter */ 681 u16 dev_rpti_counter; 682 /* Used for SAM Task Attribute ordering */ 683 u32 dev_cur_ordered_id; 684 u32 dev_flags; 685 u32 dev_port_count; 686 /* See transport_device_status_table */ 687 u32 dev_status; 688 u32 dev_tcq_window_closed; 689 /* Physical device queue depth */ 690 u32 queue_depth; 691 /* Used for SPC-2 reservations enforce of ISIDs */ 692 u64 dev_res_bin_isid; 693 t10_task_attr_index_t dev_task_attr_type; 694 /* Pointer to transport specific device structure */ 695 void *dev_ptr; 696 u32 dev_index; 697 u64 creation_time; 698 u32 num_resets; 699 u64 num_cmds; 700 u64 read_bytes; 701 u64 write_bytes; 702 spinlock_t stats_lock; 703 /* Active commands on this virtual SE device */ 704 atomic_t simple_cmds; 705 atomic_t depth_left; 706 atomic_t dev_ordered_id; 707 atomic_t execute_tasks; 708 atomic_t dev_ordered_sync; 709 atomic_t dev_qf_count; 710 struct se_obj dev_obj; 711 struct se_obj dev_access_obj; 712 struct se_obj dev_export_obj; 713 struct se_queue_obj dev_queue_obj; 714 spinlock_t delayed_cmd_lock; 715 spinlock_t execute_task_lock; 716 spinlock_t dev_reservation_lock; 717 spinlock_t dev_status_lock; 718 spinlock_t se_port_lock; 719 spinlock_t se_tmr_lock; 720 spinlock_t qf_cmd_lock; 721 /* Used for legacy SPC-2 reservationsa */ 722 struct se_node_acl *dev_reserved_node_acl; 723 /* Used for ALUA Logical Unit Group membership */ 724 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 725 /* Used for SPC-3 Persistent Reservations */ 726 struct t10_pr_registration *dev_pr_res_holder; 727 struct list_head dev_sep_list; 728 struct list_head dev_tmr_list; 729 /* Pointer to descriptor for processing thread */ 730 struct task_struct *process_thread; 731 struct work_struct qf_work_queue; 732 struct list_head delayed_cmd_list; 733 struct list_head execute_task_list; 734 struct list_head state_task_list; 735 struct list_head qf_cmd_list; 736 /* Pointer to associated SE HBA */ 737 struct se_hba *se_hba; 738 struct se_subsystem_dev *se_sub_dev; 739 /* Pointer to template of function pointers for transport */ 740 struct se_subsystem_api *transport; 741 /* Linked list for struct se_hba struct se_device list */ 742 struct list_head dev_list; 743 } ____cacheline_aligned; 744 745 struct se_hba { 746 u16 hba_tpgt; 747 u32 hba_id; 748 /* See hba_flags_table */ 749 u32 hba_flags; 750 /* Virtual iSCSI devices attached. */ 751 u32 dev_count; 752 u32 hba_index; 753 /* Pointer to transport specific host structure. */ 754 void *hba_ptr; 755 /* Linked list for struct se_device */ 756 struct list_head hba_dev_list; 757 struct list_head hba_node; 758 spinlock_t device_lock; 759 struct config_group hba_group; 760 struct mutex hba_access_mutex; 761 struct se_subsystem_api *transport; 762 } ____cacheline_aligned; 763 764 struct se_port_stat_grps { 765 struct config_group stat_group; 766 struct config_group scsi_port_group; 767 struct config_group scsi_tgt_port_group; 768 struct config_group scsi_transport_group; 769 }; 770 771 struct se_lun { 772 /* See transport_lun_status_table */ 773 enum transport_lun_status_table lun_status; 774 u32 lun_access; 775 u32 lun_flags; 776 u32 unpacked_lun; 777 atomic_t lun_acl_count; 778 spinlock_t lun_acl_lock; 779 spinlock_t lun_cmd_lock; 780 spinlock_t lun_sep_lock; 781 struct completion lun_shutdown_comp; 782 struct list_head lun_cmd_list; 783 struct list_head lun_acl_list; 784 struct se_device *lun_se_dev; 785 struct se_port *lun_sep; 786 struct config_group lun_group; 787 struct se_port_stat_grps port_stat_grps; 788 } ____cacheline_aligned; 789 790 struct scsi_port_stats { 791 u64 cmd_pdus; 792 u64 tx_data_octets; 793 u64 rx_data_octets; 794 } ____cacheline_aligned; 795 796 struct se_port { 797 /* RELATIVE TARGET PORT IDENTIFER */ 798 u16 sep_rtpi; 799 int sep_tg_pt_secondary_stat; 800 int sep_tg_pt_secondary_write_md; 801 u32 sep_index; 802 struct scsi_port_stats sep_stats; 803 /* Used for ALUA Target Port Groups membership */ 804 atomic_t sep_tg_pt_secondary_offline; 805 /* Used for PR ALL_TG_PT=1 */ 806 atomic_t sep_tg_pt_ref_cnt; 807 spinlock_t sep_alua_lock; 808 struct mutex sep_tg_pt_md_mutex; 809 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; 810 struct se_lun *sep_lun; 811 struct se_portal_group *sep_tpg; 812 struct list_head sep_alua_list; 813 struct list_head sep_list; 814 } ____cacheline_aligned; 815 816 struct se_tpg_np { 817 struct se_portal_group *tpg_np_parent; 818 struct config_group tpg_np_group; 819 } ____cacheline_aligned; 820 821 struct se_portal_group { 822 /* Type of target portal group, see transport_tpg_type_table */ 823 enum transport_tpg_type_table se_tpg_type; 824 /* Number of ACLed Initiator Nodes for this TPG */ 825 u32 num_node_acls; 826 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 827 atomic_t tpg_pr_ref_count; 828 /* Spinlock for adding/removing ACLed Nodes */ 829 spinlock_t acl_node_lock; 830 /* Spinlock for adding/removing sessions */ 831 spinlock_t session_lock; 832 spinlock_t tpg_lun_lock; 833 /* Pointer to $FABRIC_MOD portal group */ 834 void *se_tpg_fabric_ptr; 835 struct list_head se_tpg_node; 836 /* linked list for initiator ACL list */ 837 struct list_head acl_node_list; 838 struct se_lun *tpg_lun_list; 839 struct se_lun tpg_virt_lun0; 840 /* List of TCM sessions associated wth this TPG */ 841 struct list_head tpg_sess_list; 842 /* Pointer to $FABRIC_MOD dependent code */ 843 struct target_core_fabric_ops *se_tpg_tfo; 844 struct se_wwn *se_tpg_wwn; 845 struct config_group tpg_group; 846 struct config_group *tpg_default_groups[6]; 847 struct config_group tpg_lun_group; 848 struct config_group tpg_np_group; 849 struct config_group tpg_acl_group; 850 struct config_group tpg_attrib_group; 851 struct config_group tpg_param_group; 852 } ____cacheline_aligned; 853 854 struct se_wwn { 855 struct target_fabric_configfs *wwn_tf; 856 struct config_group wwn_group; 857 struct config_group *wwn_default_groups[2]; 858 struct config_group fabric_stat_group; 859 } ____cacheline_aligned; 860 861 #endif /* TARGET_CORE_BASE_H */ 862