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-rc2-ml" 13 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION 14 15 /* Maximum Number of LUNs per Target Portal Group */ 16 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ 17 #define TRANSPORT_MAX_LUNS_PER_TPG 256 18 /* 19 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. 20 * 21 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and 22 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use 23 * 16-byte CDBs by default and require an extra allocation for 24 * 32-byte CDBs to because of legacy issues. 25 * 26 * Within TCM Core there are no such legacy limitiations, so we go ahead 27 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() 28 * within all TCM Core and subsystem plugin code. 29 */ 30 #define TCM_MAX_COMMAND_SIZE 32 31 /* 32 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently 33 * defined 96, but the real limit is 252 (or 260 including the header) 34 */ 35 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE 36 /* Used by transport_send_check_condition_and_sense() */ 37 #define SPC_SENSE_KEY_OFFSET 2 38 #define SPC_ADD_SENSE_LEN_OFFSET 7 39 #define SPC_ASC_KEY_OFFSET 12 40 #define SPC_ASCQ_KEY_OFFSET 13 41 #define TRANSPORT_IQN_LEN 224 42 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ 43 #define LU_GROUP_NAME_BUF 256 44 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ 45 #define TG_PT_GROUP_NAME_BUF 256 46 /* Used to parse VPD into struct t10_vpd */ 47 #define VPD_TMP_BUF_SIZE 254 48 /* Used by transport_generic_cmd_sequencer() */ 49 #define READ_BLOCK_LEN 6 50 #define READ_CAP_LEN 8 51 #define READ_POSITION_LEN 20 52 #define INQUIRY_LEN 36 53 /* Used by transport_get_inquiry_vpd_serial() */ 54 #define INQUIRY_VPD_SERIAL_LEN 254 55 /* Used by transport_get_inquiry_vpd_device_ident() */ 56 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 57 58 /* Attempts before moving from SHORT to LONG */ 59 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 60 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ 61 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ 62 63 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ 64 65 /* struct se_dev_attrib sanity values */ 66 /* Default max_unmap_lba_count */ 67 #define DA_MAX_UNMAP_LBA_COUNT 0 68 /* Default max_unmap_block_desc_count */ 69 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 70 /* Default unmap_granularity */ 71 #define DA_UNMAP_GRANULARITY_DEFAULT 0 72 /* Default unmap_granularity_alignment */ 73 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 74 /* Default max_write_same_len, disabled by default */ 75 #define DA_MAX_WRITE_SAME_LEN 0 76 /* Default max transfer length */ 77 #define DA_FABRIC_MAX_SECTORS 8192 78 /* Use a model alias based on the configfs backend device name */ 79 #define DA_EMULATE_MODEL_ALIAS 0 80 /* Emulation for Direct Page Out */ 81 #define DA_EMULATE_DPO 0 82 /* Emulation for Forced Unit Access WRITEs */ 83 #define DA_EMULATE_FUA_WRITE 1 84 /* Emulation for Forced Unit Access READs */ 85 #define DA_EMULATE_FUA_READ 0 86 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ 87 #define DA_EMULATE_WRITE_CACHE 0 88 /* Emulation for UNIT ATTENTION Interlock Control */ 89 #define DA_EMULATE_UA_INTLLCK_CTRL 0 90 /* Emulation for TASK_ABORTED status (TAS) by default */ 91 #define DA_EMULATE_TAS 1 92 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ 93 #define DA_EMULATE_TPU 0 94 /* 95 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using 96 * block/blk-lib.c:blkdev_issue_discard() 97 */ 98 #define DA_EMULATE_TPWS 0 99 /* No Emulation for PSCSI by default */ 100 #define DA_EMULATE_ALUA 0 101 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ 102 #define DA_ENFORCE_PR_ISIDS 1 103 #define DA_STATUS_MAX_SECTORS_MIN 16 104 #define DA_STATUS_MAX_SECTORS_MAX 8192 105 /* By default don't report non-rotating (solid state) medium */ 106 #define DA_IS_NONROT 0 107 /* Queue Algorithm Modifier default for restricted reordering in control mode page */ 108 #define DA_EMULATE_REST_REORD 0 109 110 #define SE_INQUIRY_BUF 512 111 #define SE_MODE_PAGE_BUF 512 112 #define SE_SENSE_BUF 96 113 114 /* struct se_hba->hba_flags */ 115 enum hba_flags_table { 116 HBA_FLAGS_INTERNAL_USE = 0x01, 117 HBA_FLAGS_PSCSI_MODE = 0x02, 118 }; 119 120 /* struct se_lun->lun_status */ 121 enum transport_lun_status_table { 122 TRANSPORT_LUN_STATUS_FREE = 0, 123 TRANSPORT_LUN_STATUS_ACTIVE = 1, 124 }; 125 126 /* struct se_portal_group->se_tpg_type */ 127 enum transport_tpg_type_table { 128 TRANSPORT_TPG_TYPE_NORMAL = 0, 129 TRANSPORT_TPG_TYPE_DISCOVERY = 1, 130 }; 131 132 /* Special transport agnostic struct se_cmd->t_states */ 133 enum transport_state_table { 134 TRANSPORT_NO_STATE = 0, 135 TRANSPORT_NEW_CMD = 1, 136 TRANSPORT_WRITE_PENDING = 3, 137 TRANSPORT_PROCESSING = 5, 138 TRANSPORT_COMPLETE = 6, 139 TRANSPORT_ISTATE_PROCESSING = 11, 140 TRANSPORT_COMPLETE_QF_WP = 18, 141 TRANSPORT_COMPLETE_QF_OK = 19, 142 }; 143 144 /* Used for struct se_cmd->se_cmd_flags */ 145 enum se_cmd_flags_table { 146 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 147 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 148 SCF_EMULATED_TASK_SENSE = 0x00000004, 149 SCF_SCSI_DATA_CDB = 0x00000008, 150 SCF_SCSI_TMR_CDB = 0x00000010, 151 SCF_FUA = 0x00000080, 152 SCF_SE_LUN_CMD = 0x00000100, 153 SCF_BIDI = 0x00000400, 154 SCF_SENT_CHECK_CONDITION = 0x00000800, 155 SCF_OVERFLOW_BIT = 0x00001000, 156 SCF_UNDERFLOW_BIT = 0x00002000, 157 SCF_SENT_DELAYED_TAS = 0x00004000, 158 SCF_ALUA_NON_OPTIMIZED = 0x00008000, 159 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, 160 SCF_ACK_KREF = 0x00040000, 161 }; 162 163 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 164 enum transport_lunflags_table { 165 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, 166 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, 167 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, 168 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, 169 }; 170 171 /* 172 * Used by transport_send_check_condition_and_sense() 173 * to signal which ASC/ASCQ sense payload should be built. 174 */ 175 typedef unsigned __bitwise__ sense_reason_t; 176 177 enum tcm_sense_reason_table { 178 #define R(x) (__force sense_reason_t )(x) 179 TCM_NO_SENSE = R(0x00), 180 TCM_NON_EXISTENT_LUN = R(0x01), 181 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 182 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 183 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 184 TCM_SERVICE_CRC_ERROR = R(0x05), 185 TCM_SNACK_REJECTED = R(0x06), 186 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 187 TCM_INVALID_CDB_FIELD = R(0x08), 188 TCM_INVALID_PARAMETER_LIST = R(0x09), 189 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 190 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 191 TCM_WRITE_PROTECTED = R(0x0c), 192 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 193 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 194 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 195 TCM_RESERVATION_CONFLICT = R(0x10), 196 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 197 TCM_OUT_OF_RESOURCES = R(0x12), 198 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), 199 #undef R 200 }; 201 202 enum target_sc_flags_table { 203 TARGET_SCF_BIDI_OP = 0x01, 204 TARGET_SCF_ACK_KREF = 0x02, 205 TARGET_SCF_UNKNOWN_SIZE = 0x04, 206 }; 207 208 /* fabric independent task management function values */ 209 enum tcm_tmreq_table { 210 TMR_ABORT_TASK = 1, 211 TMR_ABORT_TASK_SET = 2, 212 TMR_CLEAR_ACA = 3, 213 TMR_CLEAR_TASK_SET = 4, 214 TMR_LUN_RESET = 5, 215 TMR_TARGET_WARM_RESET = 6, 216 TMR_TARGET_COLD_RESET = 7, 217 }; 218 219 /* fabric independent task management response values */ 220 enum tcm_tmrsp_table { 221 TMR_FUNCTION_COMPLETE = 1, 222 TMR_TASK_DOES_NOT_EXIST = 2, 223 TMR_LUN_DOES_NOT_EXIST = 3, 224 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, 225 TMR_FUNCTION_REJECTED = 5, 226 }; 227 228 /* 229 * Used for target SCSI statistics 230 */ 231 typedef enum { 232 SCSI_INST_INDEX, 233 SCSI_DEVICE_INDEX, 234 SCSI_AUTH_INTR_INDEX, 235 SCSI_INDEX_TYPE_MAX 236 } scsi_index_t; 237 238 struct se_cmd; 239 240 struct t10_alua { 241 /* ALUA Target Port Group ID */ 242 u16 alua_tg_pt_gps_counter; 243 u32 alua_tg_pt_gps_count; 244 spinlock_t tg_pt_gps_lock; 245 struct se_device *t10_dev; 246 /* Used for default ALUA Target Port Group */ 247 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 248 /* Used for default ALUA Target Port Group ConfigFS group */ 249 struct config_group alua_tg_pt_gps_group; 250 struct list_head tg_pt_gps_list; 251 }; 252 253 struct t10_alua_lu_gp { 254 u16 lu_gp_id; 255 int lu_gp_valid_id; 256 u32 lu_gp_members; 257 atomic_t lu_gp_ref_cnt; 258 spinlock_t lu_gp_lock; 259 struct config_group lu_gp_group; 260 struct list_head lu_gp_node; 261 struct list_head lu_gp_mem_list; 262 }; 263 264 struct t10_alua_lu_gp_member { 265 bool lu_gp_assoc; 266 atomic_t lu_gp_mem_ref_cnt; 267 spinlock_t lu_gp_mem_lock; 268 struct t10_alua_lu_gp *lu_gp; 269 struct se_device *lu_gp_mem_dev; 270 struct list_head lu_gp_mem_list; 271 }; 272 273 struct t10_alua_tg_pt_gp { 274 u16 tg_pt_gp_id; 275 int tg_pt_gp_valid_id; 276 int tg_pt_gp_alua_access_status; 277 int tg_pt_gp_alua_access_type; 278 int tg_pt_gp_nonop_delay_msecs; 279 int tg_pt_gp_trans_delay_msecs; 280 int tg_pt_gp_implict_trans_secs; 281 int tg_pt_gp_pref; 282 int tg_pt_gp_write_metadata; 283 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ 284 #define ALUA_MD_BUF_LEN 1024 285 u32 tg_pt_gp_md_buf_len; 286 u32 tg_pt_gp_members; 287 atomic_t tg_pt_gp_alua_access_state; 288 atomic_t tg_pt_gp_ref_cnt; 289 spinlock_t tg_pt_gp_lock; 290 struct mutex tg_pt_gp_md_mutex; 291 struct se_device *tg_pt_gp_dev; 292 struct config_group tg_pt_gp_group; 293 struct list_head tg_pt_gp_list; 294 struct list_head tg_pt_gp_mem_list; 295 }; 296 297 struct t10_alua_tg_pt_gp_member { 298 bool tg_pt_gp_assoc; 299 atomic_t tg_pt_gp_mem_ref_cnt; 300 spinlock_t tg_pt_gp_mem_lock; 301 struct t10_alua_tg_pt_gp *tg_pt_gp; 302 struct se_port *tg_pt; 303 struct list_head tg_pt_gp_mem_list; 304 }; 305 306 struct t10_vpd { 307 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 308 int protocol_identifier_set; 309 u32 protocol_identifier; 310 u32 device_identifier_code_set; 311 u32 association; 312 u32 device_identifier_type; 313 struct list_head vpd_list; 314 }; 315 316 struct t10_wwn { 317 char vendor[8]; 318 char model[16]; 319 char revision[4]; 320 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 321 spinlock_t t10_vpd_lock; 322 struct se_device *t10_dev; 323 struct config_group t10_wwn_group; 324 struct list_head t10_vpd_list; 325 }; 326 327 struct t10_pr_registration { 328 /* Used for fabrics that contain WWN+ISID */ 329 #define PR_REG_ISID_LEN 16 330 /* PR_REG_ISID_LEN + ',i,0x' */ 331 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 332 char pr_reg_isid[PR_REG_ISID_LEN]; 333 /* Used during APTPL metadata reading */ 334 #define PR_APTPL_MAX_IPORT_LEN 256 335 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 336 /* Used during APTPL metadata reading */ 337 #define PR_APTPL_MAX_TPORT_LEN 256 338 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 339 u16 pr_aptpl_rpti; 340 u16 pr_reg_tpgt; 341 /* Reservation effects all target ports */ 342 int pr_reg_all_tg_pt; 343 /* Activate Persistence across Target Power Loss */ 344 int pr_reg_aptpl; 345 int pr_res_holder; 346 int pr_res_type; 347 int pr_res_scope; 348 /* Used for fabric initiator WWPNs using a ISID */ 349 bool isid_present_at_reg; 350 u32 pr_res_mapped_lun; 351 u32 pr_aptpl_target_lun; 352 u32 pr_res_generation; 353 u64 pr_reg_bin_isid; 354 u64 pr_res_key; 355 atomic_t pr_res_holders; 356 struct se_node_acl *pr_reg_nacl; 357 struct se_dev_entry *pr_reg_deve; 358 struct se_lun *pr_reg_tg_pt_lun; 359 struct list_head pr_reg_list; 360 struct list_head pr_reg_abort_list; 361 struct list_head pr_reg_aptpl_list; 362 struct list_head pr_reg_atp_list; 363 struct list_head pr_reg_atp_mem_list; 364 }; 365 366 struct t10_reservation { 367 /* Reservation effects all target ports */ 368 int pr_all_tg_pt; 369 /* Activate Persistence across Target Power Loss enabled 370 * for SCSI device */ 371 int pr_aptpl_active; 372 #define PR_APTPL_BUF_LEN 8192 373 u32 pr_generation; 374 spinlock_t registration_lock; 375 spinlock_t aptpl_reg_lock; 376 /* 377 * This will always be set by one individual I_T Nexus. 378 * However with all_tg_pt=1, other I_T Nexus from the 379 * same initiator can access PR reg/res info on a different 380 * target port. 381 * 382 * There is also the 'All Registrants' case, where there is 383 * a single *pr_res_holder of the reservation, but all 384 * registrations are considered reservation holders. 385 */ 386 struct se_node_acl *pr_res_holder; 387 struct list_head registration_list; 388 struct list_head aptpl_reg_list; 389 }; 390 391 struct se_tmr_req { 392 /* Task Management function to be performed */ 393 u8 function; 394 /* Task Management response to send */ 395 u8 response; 396 int call_transport; 397 /* Reference to ITT that Task Mgmt should be performed */ 398 u32 ref_task_tag; 399 void *fabric_tmr_ptr; 400 struct se_cmd *task_cmd; 401 struct se_device *tmr_dev; 402 struct se_lun *tmr_lun; 403 struct list_head tmr_list; 404 }; 405 406 struct se_cmd { 407 /* SAM response code being sent to initiator */ 408 u8 scsi_status; 409 u8 scsi_asc; 410 u8 scsi_ascq; 411 u16 scsi_sense_length; 412 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 413 int alua_nonop_delay; 414 /* See include/linux/dma-mapping.h */ 415 enum dma_data_direction data_direction; 416 /* For SAM Task Attribute */ 417 int sam_task_attr; 418 /* Transport protocol dependent state, see transport_state_table */ 419 enum transport_state_table t_state; 420 unsigned cmd_wait_set:1; 421 unsigned unknown_data_length:1; 422 /* See se_cmd_flags_table */ 423 u32 se_cmd_flags; 424 u32 se_ordered_id; 425 /* Total size in bytes associated with command */ 426 u32 data_length; 427 u32 residual_count; 428 u32 orig_fe_lun; 429 /* Persistent Reservation key */ 430 u64 pr_res_key; 431 /* Used for sense data */ 432 void *sense_buffer; 433 struct list_head se_delayed_node; 434 struct list_head se_lun_node; 435 struct list_head se_qf_node; 436 struct se_device *se_dev; 437 struct se_dev_entry *se_deve; 438 struct se_lun *se_lun; 439 /* Only used for internal passthrough and legacy TCM fabric modules */ 440 struct se_session *se_sess; 441 struct se_tmr_req *se_tmr_req; 442 struct list_head se_cmd_list; 443 struct completion cmd_wait_comp; 444 struct kref cmd_kref; 445 struct target_core_fabric_ops *se_tfo; 446 sense_reason_t (*execute_cmd)(struct se_cmd *); 447 void (*transport_complete_callback)(struct se_cmd *); 448 449 unsigned char *t_task_cdb; 450 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 451 unsigned long long t_task_lba; 452 unsigned int transport_state; 453 #define CMD_T_ABORTED (1 << 0) 454 #define CMD_T_ACTIVE (1 << 1) 455 #define CMD_T_COMPLETE (1 << 2) 456 #define CMD_T_SENT (1 << 4) 457 #define CMD_T_STOP (1 << 5) 458 #define CMD_T_FAILED (1 << 6) 459 #define CMD_T_LUN_STOP (1 << 7) 460 #define CMD_T_LUN_FE_STOP (1 << 8) 461 #define CMD_T_DEV_ACTIVE (1 << 9) 462 #define CMD_T_REQUEST_STOP (1 << 10) 463 #define CMD_T_BUSY (1 << 11) 464 spinlock_t t_state_lock; 465 struct completion t_transport_stop_comp; 466 struct completion transport_lun_fe_stop_comp; 467 struct completion transport_lun_stop_comp; 468 469 struct work_struct work; 470 471 struct scatterlist *t_data_sg; 472 unsigned int t_data_nents; 473 void *t_data_vmap; 474 struct scatterlist *t_bidi_data_sg; 475 unsigned int t_bidi_data_nents; 476 477 struct list_head state_list; 478 bool state_active; 479 480 /* old task stop completion, consider merging with some of the above */ 481 struct completion task_stop_comp; 482 483 /* backend private data */ 484 void *priv; 485 }; 486 487 struct se_ua { 488 u8 ua_asc; 489 u8 ua_ascq; 490 struct se_node_acl *ua_nacl; 491 struct list_head ua_dev_list; 492 struct list_head ua_nacl_list; 493 }; 494 495 struct se_node_acl { 496 char initiatorname[TRANSPORT_IQN_LEN]; 497 /* Used to signal demo mode created ACL, disabled by default */ 498 bool dynamic_node_acl; 499 bool acl_stop:1; 500 u32 queue_depth; 501 u32 acl_index; 502 #define MAX_ACL_TAG_SIZE 64 503 char acl_tag[MAX_ACL_TAG_SIZE]; 504 u64 num_cmds; 505 u64 read_bytes; 506 u64 write_bytes; 507 spinlock_t stats_lock; 508 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 509 atomic_t acl_pr_ref_count; 510 struct se_dev_entry **device_list; 511 struct se_session *nacl_sess; 512 struct se_portal_group *se_tpg; 513 spinlock_t device_list_lock; 514 spinlock_t nacl_sess_lock; 515 struct config_group acl_group; 516 struct config_group acl_attrib_group; 517 struct config_group acl_auth_group; 518 struct config_group acl_param_group; 519 struct config_group acl_fabric_stat_group; 520 struct config_group *acl_default_groups[5]; 521 struct list_head acl_list; 522 struct list_head acl_sess_list; 523 struct completion acl_free_comp; 524 struct kref acl_kref; 525 }; 526 527 struct se_session { 528 unsigned sess_tearing_down:1; 529 u64 sess_bin_isid; 530 struct se_node_acl *se_node_acl; 531 struct se_portal_group *se_tpg; 532 void *fabric_sess_ptr; 533 struct list_head sess_list; 534 struct list_head sess_acl_list; 535 struct list_head sess_cmd_list; 536 struct list_head sess_wait_list; 537 spinlock_t sess_cmd_lock; 538 struct kref sess_kref; 539 }; 540 541 struct se_device; 542 struct se_transform_info; 543 struct scatterlist; 544 545 struct se_ml_stat_grps { 546 struct config_group stat_group; 547 struct config_group scsi_auth_intr_group; 548 struct config_group scsi_att_intr_port_group; 549 }; 550 551 struct se_lun_acl { 552 char initiatorname[TRANSPORT_IQN_LEN]; 553 u32 mapped_lun; 554 struct se_node_acl *se_lun_nacl; 555 struct se_lun *se_lun; 556 struct list_head lacl_list; 557 struct config_group se_lun_group; 558 struct se_ml_stat_grps ml_stat_grps; 559 }; 560 561 struct se_dev_entry { 562 bool def_pr_registered; 563 /* See transport_lunflags_table */ 564 u32 lun_flags; 565 u32 mapped_lun; 566 u32 total_cmds; 567 u64 pr_res_key; 568 u64 creation_time; 569 u32 attach_count; 570 u64 read_bytes; 571 u64 write_bytes; 572 atomic_t ua_count; 573 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 574 atomic_t pr_ref_count; 575 struct se_lun_acl *se_lun_acl; 576 spinlock_t ua_lock; 577 struct se_lun *se_lun; 578 struct list_head alua_port_list; 579 struct list_head ua_list; 580 }; 581 582 struct se_dev_attrib { 583 int emulate_model_alias; 584 int emulate_dpo; 585 int emulate_fua_write; 586 int emulate_fua_read; 587 int emulate_write_cache; 588 int emulate_ua_intlck_ctrl; 589 int emulate_tas; 590 int emulate_tpu; 591 int emulate_tpws; 592 int enforce_pr_isids; 593 int is_nonrot; 594 int emulate_rest_reord; 595 u32 hw_block_size; 596 u32 block_size; 597 u32 hw_max_sectors; 598 u32 fabric_max_sectors; 599 u32 optimal_sectors; 600 u32 hw_queue_depth; 601 u32 queue_depth; 602 u32 max_unmap_lba_count; 603 u32 max_unmap_block_desc_count; 604 u32 unmap_granularity; 605 u32 unmap_granularity_alignment; 606 u32 max_write_same_len; 607 struct se_device *da_dev; 608 struct config_group da_group; 609 }; 610 611 struct se_dev_stat_grps { 612 struct config_group stat_group; 613 struct config_group scsi_dev_group; 614 struct config_group scsi_tgt_dev_group; 615 struct config_group scsi_lu_group; 616 }; 617 618 struct se_device { 619 #define SE_DEV_LINK_MAGIC 0xfeeddeef 620 u32 dev_link_magic; 621 /* RELATIVE TARGET PORT IDENTIFER Counter */ 622 u16 dev_rpti_counter; 623 /* Used for SAM Task Attribute ordering */ 624 u32 dev_cur_ordered_id; 625 u32 dev_flags; 626 #define DF_CONFIGURED 0x00000001 627 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 628 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 629 #define DF_USING_UDEV_PATH 0x00000008 630 #define DF_USING_ALIAS 0x00000010 631 u32 dev_port_count; 632 /* Physical device queue depth */ 633 u32 queue_depth; 634 /* Used for SPC-2 reservations enforce of ISIDs */ 635 u64 dev_res_bin_isid; 636 /* Pointer to transport specific device structure */ 637 u32 dev_index; 638 u64 creation_time; 639 u32 num_resets; 640 u64 num_cmds; 641 u64 read_bytes; 642 u64 write_bytes; 643 spinlock_t stats_lock; 644 /* Active commands on this virtual SE device */ 645 atomic_t simple_cmds; 646 atomic_t dev_ordered_id; 647 atomic_t dev_ordered_sync; 648 atomic_t dev_qf_count; 649 int export_count; 650 spinlock_t delayed_cmd_lock; 651 spinlock_t execute_task_lock; 652 spinlock_t dev_reservation_lock; 653 unsigned int dev_reservation_flags; 654 #define DRF_SPC2_RESERVATIONS 0x00000001 655 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 656 spinlock_t se_port_lock; 657 spinlock_t se_tmr_lock; 658 spinlock_t qf_cmd_lock; 659 /* Used for legacy SPC-2 reservationsa */ 660 struct se_node_acl *dev_reserved_node_acl; 661 /* Used for ALUA Logical Unit Group membership */ 662 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 663 /* Used for SPC-3 Persistent Reservations */ 664 struct t10_pr_registration *dev_pr_res_holder; 665 struct list_head dev_sep_list; 666 struct list_head dev_tmr_list; 667 struct workqueue_struct *tmr_wq; 668 struct work_struct qf_work_queue; 669 struct list_head delayed_cmd_list; 670 struct list_head state_list; 671 struct list_head qf_cmd_list; 672 /* Pointer to associated SE HBA */ 673 struct se_hba *se_hba; 674 /* T10 Inquiry and VPD WWN Information */ 675 struct t10_wwn t10_wwn; 676 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 677 struct t10_alua t10_alua; 678 /* T10 SPC-2 + SPC-3 Reservations */ 679 struct t10_reservation t10_pr; 680 struct se_dev_attrib dev_attrib; 681 struct config_group dev_group; 682 struct config_group dev_pr_group; 683 struct se_dev_stat_grps dev_stat_grps; 684 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 685 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 686 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 687 unsigned char udev_path[SE_UDEV_PATH_LEN]; 688 /* Pointer to template of function pointers for transport */ 689 struct se_subsystem_api *transport; 690 /* Linked list for struct se_hba struct se_device list */ 691 struct list_head dev_list; 692 }; 693 694 struct se_hba { 695 u16 hba_tpgt; 696 u32 hba_id; 697 /* See hba_flags_table */ 698 u32 hba_flags; 699 /* Virtual iSCSI devices attached. */ 700 u32 dev_count; 701 u32 hba_index; 702 /* Pointer to transport specific host structure. */ 703 void *hba_ptr; 704 struct list_head hba_node; 705 spinlock_t device_lock; 706 struct config_group hba_group; 707 struct mutex hba_access_mutex; 708 struct se_subsystem_api *transport; 709 }; 710 711 struct se_port_stat_grps { 712 struct config_group stat_group; 713 struct config_group scsi_port_group; 714 struct config_group scsi_tgt_port_group; 715 struct config_group scsi_transport_group; 716 }; 717 718 struct se_lun { 719 #define SE_LUN_LINK_MAGIC 0xffff7771 720 u32 lun_link_magic; 721 /* See transport_lun_status_table */ 722 enum transport_lun_status_table lun_status; 723 u32 lun_access; 724 u32 lun_flags; 725 u32 unpacked_lun; 726 atomic_t lun_acl_count; 727 spinlock_t lun_acl_lock; 728 spinlock_t lun_cmd_lock; 729 spinlock_t lun_sep_lock; 730 struct completion lun_shutdown_comp; 731 struct list_head lun_cmd_list; 732 struct list_head lun_acl_list; 733 struct se_device *lun_se_dev; 734 struct se_port *lun_sep; 735 struct config_group lun_group; 736 struct se_port_stat_grps port_stat_grps; 737 }; 738 739 struct scsi_port_stats { 740 u64 cmd_pdus; 741 u64 tx_data_octets; 742 u64 rx_data_octets; 743 }; 744 745 struct se_port { 746 /* RELATIVE TARGET PORT IDENTIFER */ 747 u16 sep_rtpi; 748 int sep_tg_pt_secondary_stat; 749 int sep_tg_pt_secondary_write_md; 750 u32 sep_index; 751 struct scsi_port_stats sep_stats; 752 /* Used for ALUA Target Port Groups membership */ 753 atomic_t sep_tg_pt_secondary_offline; 754 /* Used for PR ALL_TG_PT=1 */ 755 atomic_t sep_tg_pt_ref_cnt; 756 spinlock_t sep_alua_lock; 757 struct mutex sep_tg_pt_md_mutex; 758 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; 759 struct se_lun *sep_lun; 760 struct se_portal_group *sep_tpg; 761 struct list_head sep_alua_list; 762 struct list_head sep_list; 763 }; 764 765 struct se_tpg_np { 766 struct se_portal_group *tpg_np_parent; 767 struct config_group tpg_np_group; 768 }; 769 770 struct se_portal_group { 771 /* Type of target portal group, see transport_tpg_type_table */ 772 enum transport_tpg_type_table se_tpg_type; 773 /* Number of ACLed Initiator Nodes for this TPG */ 774 u32 num_node_acls; 775 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 776 atomic_t tpg_pr_ref_count; 777 /* Spinlock for adding/removing ACLed Nodes */ 778 spinlock_t acl_node_lock; 779 /* Spinlock for adding/removing sessions */ 780 spinlock_t session_lock; 781 spinlock_t tpg_lun_lock; 782 /* Pointer to $FABRIC_MOD portal group */ 783 void *se_tpg_fabric_ptr; 784 struct list_head se_tpg_node; 785 /* linked list for initiator ACL list */ 786 struct list_head acl_node_list; 787 struct se_lun **tpg_lun_list; 788 struct se_lun tpg_virt_lun0; 789 /* List of TCM sessions associated wth this TPG */ 790 struct list_head tpg_sess_list; 791 /* Pointer to $FABRIC_MOD dependent code */ 792 struct target_core_fabric_ops *se_tpg_tfo; 793 struct se_wwn *se_tpg_wwn; 794 struct config_group tpg_group; 795 struct config_group *tpg_default_groups[7]; 796 struct config_group tpg_lun_group; 797 struct config_group tpg_np_group; 798 struct config_group tpg_acl_group; 799 struct config_group tpg_attrib_group; 800 struct config_group tpg_auth_group; 801 struct config_group tpg_param_group; 802 }; 803 804 struct se_wwn { 805 struct target_fabric_configfs *wwn_tf; 806 struct config_group wwn_group; 807 struct config_group *wwn_default_groups[2]; 808 struct config_group fabric_stat_group; 809 }; 810 811 #endif /* TARGET_CORE_BASE_H */ 812