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 = 0, 222 TMR_TASK_DOES_NOT_EXIST = 1, 223 TMR_LUN_DOES_NOT_EXIST = 2, 224 TMR_TASK_STILL_ALLEGIANT = 3, 225 TMR_TASK_FAILOVER_NOT_SUPPORTED = 4, 226 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 5, 227 TMR_FUNCTION_AUTHORIZATION_FAILED = 6, 228 TMR_FUNCTION_REJECTED = 255, 229 }; 230 231 /* 232 * Used for target SCSI statistics 233 */ 234 typedef enum { 235 SCSI_INST_INDEX, 236 SCSI_DEVICE_INDEX, 237 SCSI_AUTH_INTR_INDEX, 238 SCSI_INDEX_TYPE_MAX 239 } scsi_index_t; 240 241 struct se_cmd; 242 243 struct t10_alua { 244 /* ALUA Target Port Group ID */ 245 u16 alua_tg_pt_gps_counter; 246 u32 alua_tg_pt_gps_count; 247 spinlock_t tg_pt_gps_lock; 248 struct se_device *t10_dev; 249 /* Used for default ALUA Target Port Group */ 250 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 251 /* Used for default ALUA Target Port Group ConfigFS group */ 252 struct config_group alua_tg_pt_gps_group; 253 struct list_head tg_pt_gps_list; 254 }; 255 256 struct t10_alua_lu_gp { 257 u16 lu_gp_id; 258 int lu_gp_valid_id; 259 u32 lu_gp_members; 260 atomic_t lu_gp_ref_cnt; 261 spinlock_t lu_gp_lock; 262 struct config_group lu_gp_group; 263 struct list_head lu_gp_node; 264 struct list_head lu_gp_mem_list; 265 }; 266 267 struct t10_alua_lu_gp_member { 268 bool lu_gp_assoc; 269 atomic_t lu_gp_mem_ref_cnt; 270 spinlock_t lu_gp_mem_lock; 271 struct t10_alua_lu_gp *lu_gp; 272 struct se_device *lu_gp_mem_dev; 273 struct list_head lu_gp_mem_list; 274 }; 275 276 struct t10_alua_tg_pt_gp { 277 u16 tg_pt_gp_id; 278 int tg_pt_gp_valid_id; 279 int tg_pt_gp_alua_access_status; 280 int tg_pt_gp_alua_access_type; 281 int tg_pt_gp_nonop_delay_msecs; 282 int tg_pt_gp_trans_delay_msecs; 283 int tg_pt_gp_implict_trans_secs; 284 int tg_pt_gp_pref; 285 int tg_pt_gp_write_metadata; 286 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ 287 #define ALUA_MD_BUF_LEN 1024 288 u32 tg_pt_gp_md_buf_len; 289 u32 tg_pt_gp_members; 290 atomic_t tg_pt_gp_alua_access_state; 291 atomic_t tg_pt_gp_ref_cnt; 292 spinlock_t tg_pt_gp_lock; 293 struct mutex tg_pt_gp_md_mutex; 294 struct se_device *tg_pt_gp_dev; 295 struct config_group tg_pt_gp_group; 296 struct list_head tg_pt_gp_list; 297 struct list_head tg_pt_gp_mem_list; 298 }; 299 300 struct t10_alua_tg_pt_gp_member { 301 bool tg_pt_gp_assoc; 302 atomic_t tg_pt_gp_mem_ref_cnt; 303 spinlock_t tg_pt_gp_mem_lock; 304 struct t10_alua_tg_pt_gp *tg_pt_gp; 305 struct se_port *tg_pt; 306 struct list_head tg_pt_gp_mem_list; 307 }; 308 309 struct t10_vpd { 310 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 311 int protocol_identifier_set; 312 u32 protocol_identifier; 313 u32 device_identifier_code_set; 314 u32 association; 315 u32 device_identifier_type; 316 struct list_head vpd_list; 317 }; 318 319 struct t10_wwn { 320 char vendor[8]; 321 char model[16]; 322 char revision[4]; 323 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 324 spinlock_t t10_vpd_lock; 325 struct se_device *t10_dev; 326 struct config_group t10_wwn_group; 327 struct list_head t10_vpd_list; 328 }; 329 330 struct t10_pr_registration { 331 /* Used for fabrics that contain WWN+ISID */ 332 #define PR_REG_ISID_LEN 16 333 /* PR_REG_ISID_LEN + ',i,0x' */ 334 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 335 char pr_reg_isid[PR_REG_ISID_LEN]; 336 /* Used during APTPL metadata reading */ 337 #define PR_APTPL_MAX_IPORT_LEN 256 338 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 339 /* Used during APTPL metadata reading */ 340 #define PR_APTPL_MAX_TPORT_LEN 256 341 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 342 /* For writing out live meta data */ 343 unsigned char *pr_aptpl_buf; 344 u16 pr_aptpl_rpti; 345 u16 pr_reg_tpgt; 346 /* Reservation effects all target ports */ 347 int pr_reg_all_tg_pt; 348 /* Activate Persistence across Target Power Loss */ 349 int pr_reg_aptpl; 350 int pr_res_holder; 351 int pr_res_type; 352 int pr_res_scope; 353 /* Used for fabric initiator WWPNs using a ISID */ 354 bool isid_present_at_reg; 355 u32 pr_res_mapped_lun; 356 u32 pr_aptpl_target_lun; 357 u32 pr_res_generation; 358 u64 pr_reg_bin_isid; 359 u64 pr_res_key; 360 atomic_t pr_res_holders; 361 struct se_node_acl *pr_reg_nacl; 362 struct se_dev_entry *pr_reg_deve; 363 struct se_lun *pr_reg_tg_pt_lun; 364 struct list_head pr_reg_list; 365 struct list_head pr_reg_abort_list; 366 struct list_head pr_reg_aptpl_list; 367 struct list_head pr_reg_atp_list; 368 struct list_head pr_reg_atp_mem_list; 369 }; 370 371 struct t10_reservation { 372 /* Reservation effects all target ports */ 373 int pr_all_tg_pt; 374 /* Activate Persistence across Target Power Loss enabled 375 * for SCSI device */ 376 int pr_aptpl_active; 377 /* Used by struct t10_reservation->pr_aptpl_buf_len */ 378 #define PR_APTPL_BUF_LEN 8192 379 u32 pr_aptpl_buf_len; 380 u32 pr_generation; 381 spinlock_t registration_lock; 382 spinlock_t aptpl_reg_lock; 383 /* 384 * This will always be set by one individual I_T Nexus. 385 * However with all_tg_pt=1, other I_T Nexus from the 386 * same initiator can access PR reg/res info on a different 387 * target port. 388 * 389 * There is also the 'All Registrants' case, where there is 390 * a single *pr_res_holder of the reservation, but all 391 * registrations are considered reservation holders. 392 */ 393 struct se_node_acl *pr_res_holder; 394 struct list_head registration_list; 395 struct list_head aptpl_reg_list; 396 }; 397 398 struct se_tmr_req { 399 /* Task Management function to be performed */ 400 u8 function; 401 /* Task Management response to send */ 402 u8 response; 403 int call_transport; 404 /* Reference to ITT that Task Mgmt should be performed */ 405 u32 ref_task_tag; 406 void *fabric_tmr_ptr; 407 struct se_cmd *task_cmd; 408 struct se_device *tmr_dev; 409 struct se_lun *tmr_lun; 410 struct list_head tmr_list; 411 }; 412 413 struct se_cmd { 414 /* SAM response code being sent to initiator */ 415 u8 scsi_status; 416 u8 scsi_asc; 417 u8 scsi_ascq; 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 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */ 428 unsigned check_release:1; 429 unsigned cmd_wait_set:1; 430 unsigned unknown_data_length:1; 431 /* See se_cmd_flags_table */ 432 u32 se_cmd_flags; 433 u32 se_ordered_id; 434 /* Total size in bytes associated with command */ 435 u32 data_length; 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_cmd_list; 452 struct completion cmd_wait_comp; 453 struct kref cmd_kref; 454 struct target_core_fabric_ops *se_tfo; 455 sense_reason_t (*execute_cmd)(struct se_cmd *); 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 atomic_t t_fe_count; 462 unsigned int transport_state; 463 #define CMD_T_ABORTED (1 << 0) 464 #define CMD_T_ACTIVE (1 << 1) 465 #define CMD_T_COMPLETE (1 << 2) 466 #define CMD_T_SENT (1 << 4) 467 #define CMD_T_STOP (1 << 5) 468 #define CMD_T_FAILED (1 << 6) 469 #define CMD_T_LUN_STOP (1 << 7) 470 #define CMD_T_LUN_FE_STOP (1 << 8) 471 #define CMD_T_DEV_ACTIVE (1 << 9) 472 #define CMD_T_REQUEST_STOP (1 << 10) 473 #define CMD_T_BUSY (1 << 11) 474 spinlock_t t_state_lock; 475 struct completion t_transport_stop_comp; 476 struct completion transport_lun_fe_stop_comp; 477 struct completion transport_lun_stop_comp; 478 479 struct work_struct work; 480 481 struct scatterlist *t_data_sg; 482 unsigned int t_data_nents; 483 void *t_data_vmap; 484 struct scatterlist *t_bidi_data_sg; 485 unsigned int t_bidi_data_nents; 486 487 struct list_head state_list; 488 bool state_active; 489 490 /* old task stop completion, consider merging with some of the above */ 491 struct completion task_stop_comp; 492 493 /* backend private data */ 494 void *priv; 495 }; 496 497 struct se_ua { 498 u8 ua_asc; 499 u8 ua_ascq; 500 struct se_node_acl *ua_nacl; 501 struct list_head ua_dev_list; 502 struct list_head ua_nacl_list; 503 }; 504 505 struct se_node_acl { 506 char initiatorname[TRANSPORT_IQN_LEN]; 507 /* Used to signal demo mode created ACL, disabled by default */ 508 bool dynamic_node_acl; 509 bool acl_stop:1; 510 u32 queue_depth; 511 u32 acl_index; 512 #define MAX_ACL_TAG_SIZE 64 513 char acl_tag[MAX_ACL_TAG_SIZE]; 514 u64 num_cmds; 515 u64 read_bytes; 516 u64 write_bytes; 517 spinlock_t stats_lock; 518 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 519 atomic_t acl_pr_ref_count; 520 struct se_dev_entry **device_list; 521 struct se_session *nacl_sess; 522 struct se_portal_group *se_tpg; 523 spinlock_t device_list_lock; 524 spinlock_t nacl_sess_lock; 525 struct config_group acl_group; 526 struct config_group acl_attrib_group; 527 struct config_group acl_auth_group; 528 struct config_group acl_param_group; 529 struct config_group acl_fabric_stat_group; 530 struct config_group *acl_default_groups[5]; 531 struct list_head acl_list; 532 struct list_head acl_sess_list; 533 struct completion acl_free_comp; 534 struct kref acl_kref; 535 }; 536 537 struct se_session { 538 unsigned sess_tearing_down:1; 539 u64 sess_bin_isid; 540 struct se_node_acl *se_node_acl; 541 struct se_portal_group *se_tpg; 542 void *fabric_sess_ptr; 543 struct list_head sess_list; 544 struct list_head sess_acl_list; 545 struct list_head sess_cmd_list; 546 struct list_head sess_wait_list; 547 spinlock_t sess_cmd_lock; 548 struct kref sess_kref; 549 }; 550 551 struct se_device; 552 struct se_transform_info; 553 struct scatterlist; 554 555 struct se_ml_stat_grps { 556 struct config_group stat_group; 557 struct config_group scsi_auth_intr_group; 558 struct config_group scsi_att_intr_port_group; 559 }; 560 561 struct se_lun_acl { 562 char initiatorname[TRANSPORT_IQN_LEN]; 563 u32 mapped_lun; 564 struct se_node_acl *se_lun_nacl; 565 struct se_lun *se_lun; 566 struct list_head lacl_list; 567 struct config_group se_lun_group; 568 struct se_ml_stat_grps ml_stat_grps; 569 }; 570 571 struct se_dev_entry { 572 bool def_pr_registered; 573 /* See transport_lunflags_table */ 574 u32 lun_flags; 575 u32 mapped_lun; 576 u32 total_cmds; 577 u64 pr_res_key; 578 u64 creation_time; 579 u32 attach_count; 580 u64 read_bytes; 581 u64 write_bytes; 582 atomic_t ua_count; 583 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 584 atomic_t pr_ref_count; 585 struct se_lun_acl *se_lun_acl; 586 spinlock_t ua_lock; 587 struct se_lun *se_lun; 588 struct list_head alua_port_list; 589 struct list_head ua_list; 590 }; 591 592 struct se_dev_attrib { 593 int emulate_model_alias; 594 int emulate_dpo; 595 int emulate_fua_write; 596 int emulate_fua_read; 597 int emulate_write_cache; 598 int emulate_ua_intlck_ctrl; 599 int emulate_tas; 600 int emulate_tpu; 601 int emulate_tpws; 602 int enforce_pr_isids; 603 int is_nonrot; 604 int emulate_rest_reord; 605 u32 hw_block_size; 606 u32 block_size; 607 u32 hw_max_sectors; 608 u32 fabric_max_sectors; 609 u32 optimal_sectors; 610 u32 hw_queue_depth; 611 u32 queue_depth; 612 u32 max_unmap_lba_count; 613 u32 max_unmap_block_desc_count; 614 u32 unmap_granularity; 615 u32 unmap_granularity_alignment; 616 u32 max_write_same_len; 617 struct se_device *da_dev; 618 struct config_group da_group; 619 }; 620 621 struct se_dev_stat_grps { 622 struct config_group stat_group; 623 struct config_group scsi_dev_group; 624 struct config_group scsi_tgt_dev_group; 625 struct config_group scsi_lu_group; 626 }; 627 628 struct se_device { 629 #define SE_DEV_LINK_MAGIC 0xfeeddeef 630 u32 dev_link_magic; 631 /* RELATIVE TARGET PORT IDENTIFER Counter */ 632 u16 dev_rpti_counter; 633 /* Used for SAM Task Attribute ordering */ 634 u32 dev_cur_ordered_id; 635 u32 dev_flags; 636 #define DF_CONFIGURED 0x00000001 637 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 638 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 639 #define DF_USING_UDEV_PATH 0x00000008 640 #define DF_USING_ALIAS 0x00000010 641 u32 dev_port_count; 642 /* Physical device queue depth */ 643 u32 queue_depth; 644 /* Used for SPC-2 reservations enforce of ISIDs */ 645 u64 dev_res_bin_isid; 646 /* Pointer to transport specific device structure */ 647 u32 dev_index; 648 u64 creation_time; 649 u32 num_resets; 650 u64 num_cmds; 651 u64 read_bytes; 652 u64 write_bytes; 653 spinlock_t stats_lock; 654 /* Active commands on this virtual SE device */ 655 atomic_t simple_cmds; 656 atomic_t dev_ordered_id; 657 atomic_t dev_ordered_sync; 658 atomic_t dev_qf_count; 659 int export_count; 660 spinlock_t delayed_cmd_lock; 661 spinlock_t execute_task_lock; 662 spinlock_t dev_reservation_lock; 663 unsigned int dev_reservation_flags; 664 #define DRF_SPC2_RESERVATIONS 0x00000001 665 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 666 spinlock_t se_port_lock; 667 spinlock_t se_tmr_lock; 668 spinlock_t qf_cmd_lock; 669 /* Used for legacy SPC-2 reservationsa */ 670 struct se_node_acl *dev_reserved_node_acl; 671 /* Used for ALUA Logical Unit Group membership */ 672 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 673 /* Used for SPC-3 Persistent Reservations */ 674 struct t10_pr_registration *dev_pr_res_holder; 675 struct list_head dev_sep_list; 676 struct list_head dev_tmr_list; 677 struct workqueue_struct *tmr_wq; 678 struct work_struct qf_work_queue; 679 struct list_head delayed_cmd_list; 680 struct list_head state_list; 681 struct list_head qf_cmd_list; 682 /* Pointer to associated SE HBA */ 683 struct se_hba *se_hba; 684 /* T10 Inquiry and VPD WWN Information */ 685 struct t10_wwn t10_wwn; 686 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 687 struct t10_alua t10_alua; 688 /* T10 SPC-2 + SPC-3 Reservations */ 689 struct t10_reservation t10_pr; 690 struct se_dev_attrib dev_attrib; 691 struct config_group dev_group; 692 struct config_group dev_pr_group; 693 struct se_dev_stat_grps dev_stat_grps; 694 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 695 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 696 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 697 unsigned char udev_path[SE_UDEV_PATH_LEN]; 698 /* Pointer to template of function pointers for transport */ 699 struct se_subsystem_api *transport; 700 /* Linked list for struct se_hba struct se_device list */ 701 struct list_head dev_list; 702 }; 703 704 struct se_hba { 705 u16 hba_tpgt; 706 u32 hba_id; 707 /* See hba_flags_table */ 708 u32 hba_flags; 709 /* Virtual iSCSI devices attached. */ 710 u32 dev_count; 711 u32 hba_index; 712 /* Pointer to transport specific host structure. */ 713 void *hba_ptr; 714 struct list_head hba_node; 715 spinlock_t device_lock; 716 struct config_group hba_group; 717 struct mutex hba_access_mutex; 718 struct se_subsystem_api *transport; 719 }; 720 721 struct se_port_stat_grps { 722 struct config_group stat_group; 723 struct config_group scsi_port_group; 724 struct config_group scsi_tgt_port_group; 725 struct config_group scsi_transport_group; 726 }; 727 728 struct se_lun { 729 #define SE_LUN_LINK_MAGIC 0xffff7771 730 u32 lun_link_magic; 731 /* See transport_lun_status_table */ 732 enum transport_lun_status_table lun_status; 733 u32 lun_access; 734 u32 lun_flags; 735 u32 unpacked_lun; 736 atomic_t lun_acl_count; 737 spinlock_t lun_acl_lock; 738 spinlock_t lun_cmd_lock; 739 spinlock_t lun_sep_lock; 740 struct completion lun_shutdown_comp; 741 struct list_head lun_cmd_list; 742 struct list_head lun_acl_list; 743 struct se_device *lun_se_dev; 744 struct se_port *lun_sep; 745 struct config_group lun_group; 746 struct se_port_stat_grps port_stat_grps; 747 }; 748 749 struct scsi_port_stats { 750 u64 cmd_pdus; 751 u64 tx_data_octets; 752 u64 rx_data_octets; 753 }; 754 755 struct se_port { 756 /* RELATIVE TARGET PORT IDENTIFER */ 757 u16 sep_rtpi; 758 int sep_tg_pt_secondary_stat; 759 int sep_tg_pt_secondary_write_md; 760 u32 sep_index; 761 struct scsi_port_stats sep_stats; 762 /* Used for ALUA Target Port Groups membership */ 763 atomic_t sep_tg_pt_secondary_offline; 764 /* Used for PR ALL_TG_PT=1 */ 765 atomic_t sep_tg_pt_ref_cnt; 766 spinlock_t sep_alua_lock; 767 struct mutex sep_tg_pt_md_mutex; 768 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; 769 struct se_lun *sep_lun; 770 struct se_portal_group *sep_tpg; 771 struct list_head sep_alua_list; 772 struct list_head sep_list; 773 }; 774 775 struct se_tpg_np { 776 struct se_portal_group *tpg_np_parent; 777 struct config_group tpg_np_group; 778 }; 779 780 struct se_portal_group { 781 /* Type of target portal group, see transport_tpg_type_table */ 782 enum transport_tpg_type_table se_tpg_type; 783 /* Number of ACLed Initiator Nodes for this TPG */ 784 u32 num_node_acls; 785 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 786 atomic_t tpg_pr_ref_count; 787 /* Spinlock for adding/removing ACLed Nodes */ 788 spinlock_t acl_node_lock; 789 /* Spinlock for adding/removing sessions */ 790 spinlock_t session_lock; 791 spinlock_t tpg_lun_lock; 792 /* Pointer to $FABRIC_MOD portal group */ 793 void *se_tpg_fabric_ptr; 794 struct list_head se_tpg_node; 795 /* linked list for initiator ACL list */ 796 struct list_head acl_node_list; 797 struct se_lun **tpg_lun_list; 798 struct se_lun tpg_virt_lun0; 799 /* List of TCM sessions associated wth this TPG */ 800 struct list_head tpg_sess_list; 801 /* Pointer to $FABRIC_MOD dependent code */ 802 struct target_core_fabric_ops *se_tpg_tfo; 803 struct se_wwn *se_tpg_wwn; 804 struct config_group tpg_group; 805 struct config_group *tpg_default_groups[6]; 806 struct config_group tpg_lun_group; 807 struct config_group tpg_np_group; 808 struct config_group tpg_acl_group; 809 struct config_group tpg_attrib_group; 810 struct config_group tpg_param_group; 811 }; 812 813 struct se_wwn { 814 struct target_fabric_configfs *wwn_tf; 815 struct config_group wwn_group; 816 struct config_group *wwn_default_groups[2]; 817 struct config_group fabric_stat_group; 818 }; 819 820 #endif /* TARGET_CORE_BASE_H */ 821