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 128 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 /* Emulation for Direct Page Out */ 79 #define DA_EMULATE_DPO 0 80 /* Emulation for Forced Unit Access WRITEs */ 81 #define DA_EMULATE_FUA_WRITE 1 82 /* Emulation for Forced Unit Access READs */ 83 #define DA_EMULATE_FUA_READ 0 84 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ 85 #define DA_EMULATE_WRITE_CACHE 0 86 /* Emulation for UNIT ATTENTION Interlock Control */ 87 #define DA_EMULATE_UA_INTLLCK_CTRL 0 88 /* Emulation for TASK_ABORTED status (TAS) by default */ 89 #define DA_EMULATE_TAS 1 90 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ 91 #define DA_EMULATE_TPU 0 92 /* 93 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using 94 * block/blk-lib.c:blkdev_issue_discard() 95 */ 96 #define DA_EMULATE_TPWS 0 97 /* No Emulation for PSCSI by default */ 98 #define DA_EMULATE_ALUA 0 99 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ 100 #define DA_ENFORCE_PR_ISIDS 1 101 #define DA_STATUS_MAX_SECTORS_MIN 16 102 #define DA_STATUS_MAX_SECTORS_MAX 8192 103 /* By default don't report non-rotating (solid state) medium */ 104 #define DA_IS_NONROT 0 105 /* Queue Algorithm Modifier default for restricted reordering in control mode page */ 106 #define DA_EMULATE_REST_REORD 0 107 108 #define SE_INQUIRY_BUF 512 109 #define SE_MODE_PAGE_BUF 512 110 #define SE_SENSE_BUF 96 111 112 /* struct se_hba->hba_flags */ 113 enum hba_flags_table { 114 HBA_FLAGS_INTERNAL_USE = 0x01, 115 HBA_FLAGS_PSCSI_MODE = 0x02, 116 }; 117 118 /* struct se_lun->lun_status */ 119 enum transport_lun_status_table { 120 TRANSPORT_LUN_STATUS_FREE = 0, 121 TRANSPORT_LUN_STATUS_ACTIVE = 1, 122 }; 123 124 /* struct se_portal_group->se_tpg_type */ 125 enum transport_tpg_type_table { 126 TRANSPORT_TPG_TYPE_NORMAL = 0, 127 TRANSPORT_TPG_TYPE_DISCOVERY = 1, 128 }; 129 130 /* Special transport agnostic struct se_cmd->t_states */ 131 enum transport_state_table { 132 TRANSPORT_NO_STATE = 0, 133 TRANSPORT_NEW_CMD = 1, 134 TRANSPORT_WRITE_PENDING = 3, 135 TRANSPORT_PROCESSING = 5, 136 TRANSPORT_COMPLETE = 6, 137 TRANSPORT_ISTATE_PROCESSING = 11, 138 TRANSPORT_COMPLETE_QF_WP = 18, 139 TRANSPORT_COMPLETE_QF_OK = 19, 140 }; 141 142 /* Used for struct se_cmd->se_cmd_flags */ 143 enum se_cmd_flags_table { 144 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 145 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 146 SCF_EMULATED_TASK_SENSE = 0x00000004, 147 SCF_SCSI_DATA_CDB = 0x00000008, 148 SCF_SCSI_TMR_CDB = 0x00000010, 149 SCF_FUA = 0x00000080, 150 SCF_SE_LUN_CMD = 0x00000100, 151 SCF_BIDI = 0x00000400, 152 SCF_SENT_CHECK_CONDITION = 0x00000800, 153 SCF_OVERFLOW_BIT = 0x00001000, 154 SCF_UNDERFLOW_BIT = 0x00002000, 155 SCF_SENT_DELAYED_TAS = 0x00004000, 156 SCF_ALUA_NON_OPTIMIZED = 0x00008000, 157 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, 158 SCF_ACK_KREF = 0x00040000, 159 }; 160 161 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 162 enum transport_lunflags_table { 163 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, 164 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, 165 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, 166 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, 167 }; 168 169 /* 170 * Used by transport_send_check_condition_and_sense() 171 * to signal which ASC/ASCQ sense payload should be built. 172 */ 173 typedef unsigned __bitwise__ sense_reason_t; 174 175 enum tcm_sense_reason_table { 176 #define R(x) (__force sense_reason_t )(x) 177 TCM_NO_SENSE = R(0x00), 178 TCM_NON_EXISTENT_LUN = R(0x01), 179 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 180 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 181 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 182 TCM_SERVICE_CRC_ERROR = R(0x05), 183 TCM_SNACK_REJECTED = R(0x06), 184 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 185 TCM_INVALID_CDB_FIELD = R(0x08), 186 TCM_INVALID_PARAMETER_LIST = R(0x09), 187 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 188 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 189 TCM_WRITE_PROTECTED = R(0x0c), 190 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 191 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 192 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 193 TCM_RESERVATION_CONFLICT = R(0x10), 194 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 195 TCM_OUT_OF_RESOURCES = R(0x12), 196 #undef R 197 }; 198 199 enum target_sc_flags_table { 200 TARGET_SCF_BIDI_OP = 0x01, 201 TARGET_SCF_ACK_KREF = 0x02, 202 TARGET_SCF_UNKNOWN_SIZE = 0x04, 203 }; 204 205 /* fabric independent task management function values */ 206 enum tcm_tmreq_table { 207 TMR_ABORT_TASK = 1, 208 TMR_ABORT_TASK_SET = 2, 209 TMR_CLEAR_ACA = 3, 210 TMR_CLEAR_TASK_SET = 4, 211 TMR_LUN_RESET = 5, 212 TMR_TARGET_WARM_RESET = 6, 213 TMR_TARGET_COLD_RESET = 7, 214 TMR_FABRIC_TMR = 255, 215 }; 216 217 /* fabric independent task management response values */ 218 enum tcm_tmrsp_table { 219 TMR_FUNCTION_COMPLETE = 0, 220 TMR_TASK_DOES_NOT_EXIST = 1, 221 TMR_LUN_DOES_NOT_EXIST = 2, 222 TMR_TASK_STILL_ALLEGIANT = 3, 223 TMR_TASK_FAILOVER_NOT_SUPPORTED = 4, 224 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 5, 225 TMR_FUNCTION_AUTHORIZATION_FAILED = 6, 226 TMR_FUNCTION_REJECTED = 255, 227 }; 228 229 /* 230 * Used for target SCSI statistics 231 */ 232 typedef enum { 233 SCSI_INST_INDEX, 234 SCSI_DEVICE_INDEX, 235 SCSI_AUTH_INTR_INDEX, 236 SCSI_INDEX_TYPE_MAX 237 } scsi_index_t; 238 239 struct se_cmd; 240 241 struct t10_alua { 242 /* ALUA Target Port Group ID */ 243 u16 alua_tg_pt_gps_counter; 244 u32 alua_tg_pt_gps_count; 245 spinlock_t tg_pt_gps_lock; 246 struct se_device *t10_dev; 247 /* Used for default ALUA Target Port Group */ 248 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 249 /* Used for default ALUA Target Port Group ConfigFS group */ 250 struct config_group alua_tg_pt_gps_group; 251 struct list_head tg_pt_gps_list; 252 }; 253 254 struct t10_alua_lu_gp { 255 u16 lu_gp_id; 256 int lu_gp_valid_id; 257 u32 lu_gp_members; 258 atomic_t lu_gp_ref_cnt; 259 spinlock_t lu_gp_lock; 260 struct config_group lu_gp_group; 261 struct list_head lu_gp_node; 262 struct list_head lu_gp_mem_list; 263 }; 264 265 struct t10_alua_lu_gp_member { 266 bool lu_gp_assoc; 267 atomic_t lu_gp_mem_ref_cnt; 268 spinlock_t lu_gp_mem_lock; 269 struct t10_alua_lu_gp *lu_gp; 270 struct se_device *lu_gp_mem_dev; 271 struct list_head lu_gp_mem_list; 272 }; 273 274 struct t10_alua_tg_pt_gp { 275 u16 tg_pt_gp_id; 276 int tg_pt_gp_valid_id; 277 int tg_pt_gp_alua_access_status; 278 int tg_pt_gp_alua_access_type; 279 int tg_pt_gp_nonop_delay_msecs; 280 int tg_pt_gp_trans_delay_msecs; 281 int tg_pt_gp_implict_trans_secs; 282 int tg_pt_gp_pref; 283 int tg_pt_gp_write_metadata; 284 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ 285 #define ALUA_MD_BUF_LEN 1024 286 u32 tg_pt_gp_md_buf_len; 287 u32 tg_pt_gp_members; 288 atomic_t tg_pt_gp_alua_access_state; 289 atomic_t tg_pt_gp_ref_cnt; 290 spinlock_t tg_pt_gp_lock; 291 struct mutex tg_pt_gp_md_mutex; 292 struct se_device *tg_pt_gp_dev; 293 struct config_group tg_pt_gp_group; 294 struct list_head tg_pt_gp_list; 295 struct list_head tg_pt_gp_mem_list; 296 }; 297 298 struct t10_alua_tg_pt_gp_member { 299 bool tg_pt_gp_assoc; 300 atomic_t tg_pt_gp_mem_ref_cnt; 301 spinlock_t tg_pt_gp_mem_lock; 302 struct t10_alua_tg_pt_gp *tg_pt_gp; 303 struct se_port *tg_pt; 304 struct list_head tg_pt_gp_mem_list; 305 }; 306 307 struct t10_vpd { 308 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 309 int protocol_identifier_set; 310 u32 protocol_identifier; 311 u32 device_identifier_code_set; 312 u32 association; 313 u32 device_identifier_type; 314 struct list_head vpd_list; 315 }; 316 317 struct t10_wwn { 318 char vendor[8]; 319 char model[16]; 320 char revision[4]; 321 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 322 spinlock_t t10_vpd_lock; 323 struct se_device *t10_dev; 324 struct config_group t10_wwn_group; 325 struct list_head t10_vpd_list; 326 }; 327 328 struct t10_pr_registration { 329 /* Used for fabrics that contain WWN+ISID */ 330 #define PR_REG_ISID_LEN 16 331 /* PR_REG_ISID_LEN + ',i,0x' */ 332 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 333 char pr_reg_isid[PR_REG_ISID_LEN]; 334 /* Used during APTPL metadata reading */ 335 #define PR_APTPL_MAX_IPORT_LEN 256 336 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 337 /* Used during APTPL metadata reading */ 338 #define PR_APTPL_MAX_TPORT_LEN 256 339 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 340 /* For writing out live meta data */ 341 unsigned char *pr_aptpl_buf; 342 u16 pr_aptpl_rpti; 343 u16 pr_reg_tpgt; 344 /* Reservation effects all target ports */ 345 int pr_reg_all_tg_pt; 346 /* Activate Persistence across Target Power Loss */ 347 int pr_reg_aptpl; 348 int pr_res_holder; 349 int pr_res_type; 350 int pr_res_scope; 351 /* Used for fabric initiator WWPNs using a ISID */ 352 bool isid_present_at_reg; 353 u32 pr_res_mapped_lun; 354 u32 pr_aptpl_target_lun; 355 u32 pr_res_generation; 356 u64 pr_reg_bin_isid; 357 u64 pr_res_key; 358 atomic_t pr_res_holders; 359 struct se_node_acl *pr_reg_nacl; 360 struct se_dev_entry *pr_reg_deve; 361 struct se_lun *pr_reg_tg_pt_lun; 362 struct list_head pr_reg_list; 363 struct list_head pr_reg_abort_list; 364 struct list_head pr_reg_aptpl_list; 365 struct list_head pr_reg_atp_list; 366 struct list_head pr_reg_atp_mem_list; 367 }; 368 369 struct t10_reservation { 370 /* Reservation effects all target ports */ 371 int pr_all_tg_pt; 372 /* Activate Persistence across Target Power Loss enabled 373 * for SCSI device */ 374 int pr_aptpl_active; 375 /* Used by struct t10_reservation->pr_aptpl_buf_len */ 376 #define PR_APTPL_BUF_LEN 8192 377 u32 pr_aptpl_buf_len; 378 u32 pr_generation; 379 spinlock_t registration_lock; 380 spinlock_t aptpl_reg_lock; 381 /* 382 * This will always be set by one individual I_T Nexus. 383 * However with all_tg_pt=1, other I_T Nexus from the 384 * same initiator can access PR reg/res info on a different 385 * target port. 386 * 387 * There is also the 'All Registrants' case, where there is 388 * a single *pr_res_holder of the reservation, but all 389 * registrations are considered reservation holders. 390 */ 391 struct se_node_acl *pr_res_holder; 392 struct list_head registration_list; 393 struct list_head aptpl_reg_list; 394 }; 395 396 struct se_tmr_req { 397 /* Task Management function to be performed */ 398 u8 function; 399 /* Task Management response to send */ 400 u8 response; 401 int call_transport; 402 /* Reference to ITT that Task Mgmt should be performed */ 403 u32 ref_task_tag; 404 void *fabric_tmr_ptr; 405 struct se_cmd *task_cmd; 406 struct se_device *tmr_dev; 407 struct se_lun *tmr_lun; 408 struct list_head tmr_list; 409 }; 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 u16 scsi_sense_length; 417 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 418 int alua_nonop_delay; 419 /* See include/linux/dma-mapping.h */ 420 enum dma_data_direction data_direction; 421 /* For SAM Task Attribute */ 422 int sam_task_attr; 423 /* Transport protocol dependent state, see transport_state_table */ 424 enum transport_state_table t_state; 425 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */ 426 unsigned check_release:1; 427 unsigned cmd_wait_set:1; 428 unsigned unknown_data_length: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 u32 residual_count; 435 u32 orig_fe_lun; 436 /* Persistent Reservation key */ 437 u64 pr_res_key; 438 /* Used for sense data */ 439 void *sense_buffer; 440 struct list_head se_delayed_node; 441 struct list_head se_lun_node; 442 struct list_head se_qf_node; 443 struct se_device *se_dev; 444 struct se_dev_entry *se_deve; 445 struct se_lun *se_lun; 446 /* Only used for internal passthrough and legacy TCM fabric modules */ 447 struct se_session *se_sess; 448 struct se_tmr_req *se_tmr_req; 449 struct list_head se_cmd_list; 450 struct completion cmd_wait_comp; 451 struct kref cmd_kref; 452 struct target_core_fabric_ops *se_tfo; 453 sense_reason_t (*execute_cmd)(struct se_cmd *); 454 void (*transport_complete_callback)(struct se_cmd *); 455 456 unsigned char *t_task_cdb; 457 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 458 unsigned long long t_task_lba; 459 atomic_t t_fe_count; 460 unsigned int transport_state; 461 #define CMD_T_ABORTED (1 << 0) 462 #define CMD_T_ACTIVE (1 << 1) 463 #define CMD_T_COMPLETE (1 << 2) 464 #define CMD_T_QUEUED (1 << 3) 465 #define CMD_T_SENT (1 << 4) 466 #define CMD_T_STOP (1 << 5) 467 #define CMD_T_FAILED (1 << 6) 468 #define CMD_T_LUN_STOP (1 << 7) 469 #define CMD_T_LUN_FE_STOP (1 << 8) 470 #define CMD_T_DEV_ACTIVE (1 << 9) 471 #define CMD_T_REQUEST_STOP (1 << 10) 472 #define CMD_T_BUSY (1 << 11) 473 spinlock_t t_state_lock; 474 struct completion t_transport_stop_comp; 475 struct completion transport_lun_fe_stop_comp; 476 struct completion transport_lun_stop_comp; 477 478 struct work_struct work; 479 480 struct scatterlist *t_data_sg; 481 unsigned int t_data_nents; 482 void *t_data_vmap; 483 struct scatterlist *t_bidi_data_sg; 484 unsigned int t_bidi_data_nents; 485 486 struct list_head state_list; 487 bool state_active; 488 489 /* old task stop completion, consider merging with some of the above */ 490 struct completion task_stop_comp; 491 492 /* backend private data */ 493 void *priv; 494 }; 495 496 struct se_ua { 497 u8 ua_asc; 498 u8 ua_ascq; 499 struct se_node_acl *ua_nacl; 500 struct list_head ua_dev_list; 501 struct list_head ua_nacl_list; 502 }; 503 504 struct se_node_acl { 505 char initiatorname[TRANSPORT_IQN_LEN]; 506 /* Used to signal demo mode created ACL, disabled by default */ 507 bool dynamic_node_acl; 508 bool acl_stop:1; 509 u32 queue_depth; 510 u32 acl_index; 511 #define MAX_ACL_TAG_SIZE 64 512 char acl_tag[MAX_ACL_TAG_SIZE]; 513 u64 num_cmds; 514 u64 read_bytes; 515 u64 write_bytes; 516 spinlock_t stats_lock; 517 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 518 atomic_t acl_pr_ref_count; 519 struct se_dev_entry **device_list; 520 struct se_session *nacl_sess; 521 struct se_portal_group *se_tpg; 522 spinlock_t device_list_lock; 523 spinlock_t nacl_sess_lock; 524 struct config_group acl_group; 525 struct config_group acl_attrib_group; 526 struct config_group acl_auth_group; 527 struct config_group acl_param_group; 528 struct config_group acl_fabric_stat_group; 529 struct config_group *acl_default_groups[5]; 530 struct list_head acl_list; 531 struct list_head acl_sess_list; 532 struct completion acl_free_comp; 533 struct kref acl_kref; 534 }; 535 536 struct se_session { 537 unsigned sess_tearing_down:1; 538 u64 sess_bin_isid; 539 struct se_node_acl *se_node_acl; 540 struct se_portal_group *se_tpg; 541 void *fabric_sess_ptr; 542 struct list_head sess_list; 543 struct list_head sess_acl_list; 544 struct list_head sess_cmd_list; 545 spinlock_t sess_cmd_lock; 546 struct kref sess_kref; 547 }; 548 549 struct se_device; 550 struct se_transform_info; 551 struct scatterlist; 552 553 struct se_ml_stat_grps { 554 struct config_group stat_group; 555 struct config_group scsi_auth_intr_group; 556 struct config_group scsi_att_intr_port_group; 557 }; 558 559 struct se_lun_acl { 560 char initiatorname[TRANSPORT_IQN_LEN]; 561 u32 mapped_lun; 562 struct se_node_acl *se_lun_nacl; 563 struct se_lun *se_lun; 564 struct list_head lacl_list; 565 struct config_group se_lun_group; 566 struct se_ml_stat_grps ml_stat_grps; 567 }; 568 569 struct se_dev_entry { 570 bool def_pr_registered; 571 /* See transport_lunflags_table */ 572 u32 lun_flags; 573 u32 deve_cmds; 574 u32 mapped_lun; 575 u32 average_bytes; 576 u32 last_byte_count; 577 u32 total_cmds; 578 u32 total_bytes; 579 u64 pr_res_key; 580 u64 creation_time; 581 u32 attach_count; 582 u64 read_bytes; 583 u64 write_bytes; 584 atomic_t ua_count; 585 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 586 atomic_t pr_ref_count; 587 struct se_lun_acl *se_lun_acl; 588 spinlock_t ua_lock; 589 struct se_lun *se_lun; 590 struct list_head alua_port_list; 591 struct list_head ua_list; 592 }; 593 594 struct se_dev_attrib { 595 int emulate_dpo; 596 int emulate_fua_write; 597 int emulate_fua_read; 598 int emulate_write_cache; 599 int emulate_ua_intlck_ctrl; 600 int emulate_tas; 601 int emulate_tpu; 602 int emulate_tpws; 603 int enforce_pr_isids; 604 int is_nonrot; 605 int emulate_rest_reord; 606 u32 hw_block_size; 607 u32 block_size; 608 u32 hw_max_sectors; 609 u32 fabric_max_sectors; 610 u32 optimal_sectors; 611 u32 hw_queue_depth; 612 u32 queue_depth; 613 u32 max_unmap_lba_count; 614 u32 max_unmap_block_desc_count; 615 u32 unmap_granularity; 616 u32 unmap_granularity_alignment; 617 u32 max_write_same_len; 618 struct se_device *da_dev; 619 struct config_group da_group; 620 }; 621 622 struct se_dev_stat_grps { 623 struct config_group stat_group; 624 struct config_group scsi_dev_group; 625 struct config_group scsi_tgt_dev_group; 626 struct config_group scsi_lu_group; 627 }; 628 629 struct se_device { 630 #define SE_DEV_LINK_MAGIC 0xfeeddeef 631 u32 dev_link_magic; 632 /* RELATIVE TARGET PORT IDENTIFER Counter */ 633 u16 dev_rpti_counter; 634 /* Used for SAM Task Attribute ordering */ 635 u32 dev_cur_ordered_id; 636 u32 dev_flags; 637 #define DF_CONFIGURED 0x00000001 638 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 639 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 640 #define DF_USING_UDEV_PATH 0x00000008 641 #define DF_USING_ALIAS 0x00000010 642 u32 dev_port_count; 643 /* Physical device queue depth */ 644 u32 queue_depth; 645 /* Used for SPC-2 reservations enforce of ISIDs */ 646 u64 dev_res_bin_isid; 647 /* Pointer to transport specific device structure */ 648 u32 dev_index; 649 u64 creation_time; 650 u32 num_resets; 651 u64 num_cmds; 652 u64 read_bytes; 653 u64 write_bytes; 654 spinlock_t stats_lock; 655 /* Active commands on this virtual SE device */ 656 atomic_t simple_cmds; 657 atomic_t dev_ordered_id; 658 atomic_t dev_ordered_sync; 659 atomic_t dev_qf_count; 660 int export_count; 661 spinlock_t delayed_cmd_lock; 662 spinlock_t execute_task_lock; 663 spinlock_t dev_reservation_lock; 664 unsigned int dev_reservation_flags; 665 #define DRF_SPC2_RESERVATIONS 0x00000001 666 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 667 spinlock_t se_port_lock; 668 spinlock_t se_tmr_lock; 669 spinlock_t qf_cmd_lock; 670 /* Used for legacy SPC-2 reservationsa */ 671 struct se_node_acl *dev_reserved_node_acl; 672 /* Used for ALUA Logical Unit Group membership */ 673 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 674 /* Used for SPC-3 Persistent Reservations */ 675 struct t10_pr_registration *dev_pr_res_holder; 676 struct list_head dev_sep_list; 677 struct list_head dev_tmr_list; 678 struct workqueue_struct *tmr_wq; 679 struct work_struct qf_work_queue; 680 struct list_head delayed_cmd_list; 681 struct list_head state_list; 682 struct list_head qf_cmd_list; 683 /* Pointer to associated SE HBA */ 684 struct se_hba *se_hba; 685 /* T10 Inquiry and VPD WWN Information */ 686 struct t10_wwn t10_wwn; 687 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 688 struct t10_alua t10_alua; 689 /* T10 SPC-2 + SPC-3 Reservations */ 690 struct t10_reservation t10_pr; 691 struct se_dev_attrib dev_attrib; 692 struct config_group dev_group; 693 struct config_group dev_pr_group; 694 struct se_dev_stat_grps dev_stat_grps; 695 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 696 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 697 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 698 unsigned char udev_path[SE_UDEV_PATH_LEN]; 699 /* Pointer to template of function pointers for transport */ 700 struct se_subsystem_api *transport; 701 /* Linked list for struct se_hba struct se_device list */ 702 struct list_head dev_list; 703 }; 704 705 struct se_hba { 706 u16 hba_tpgt; 707 u32 hba_id; 708 /* See hba_flags_table */ 709 u32 hba_flags; 710 /* Virtual iSCSI devices attached. */ 711 u32 dev_count; 712 u32 hba_index; 713 /* Pointer to transport specific host structure. */ 714 void *hba_ptr; 715 struct list_head hba_node; 716 spinlock_t device_lock; 717 struct config_group hba_group; 718 struct mutex hba_access_mutex; 719 struct se_subsystem_api *transport; 720 }; 721 722 struct se_port_stat_grps { 723 struct config_group stat_group; 724 struct config_group scsi_port_group; 725 struct config_group scsi_tgt_port_group; 726 struct config_group scsi_transport_group; 727 }; 728 729 struct se_lun { 730 #define SE_LUN_LINK_MAGIC 0xffff7771 731 u32 lun_link_magic; 732 /* See transport_lun_status_table */ 733 enum transport_lun_status_table lun_status; 734 u32 lun_access; 735 u32 lun_flags; 736 u32 unpacked_lun; 737 atomic_t lun_acl_count; 738 spinlock_t lun_acl_lock; 739 spinlock_t lun_cmd_lock; 740 spinlock_t lun_sep_lock; 741 struct completion lun_shutdown_comp; 742 struct list_head lun_cmd_list; 743 struct list_head lun_acl_list; 744 struct se_device *lun_se_dev; 745 struct se_port *lun_sep; 746 struct config_group lun_group; 747 struct se_port_stat_grps port_stat_grps; 748 }; 749 750 struct scsi_port_stats { 751 u64 cmd_pdus; 752 u64 tx_data_octets; 753 u64 rx_data_octets; 754 }; 755 756 struct se_port { 757 /* RELATIVE TARGET PORT IDENTIFER */ 758 u16 sep_rtpi; 759 int sep_tg_pt_secondary_stat; 760 int sep_tg_pt_secondary_write_md; 761 u32 sep_index; 762 struct scsi_port_stats sep_stats; 763 /* Used for ALUA Target Port Groups membership */ 764 atomic_t sep_tg_pt_secondary_offline; 765 /* Used for PR ALL_TG_PT=1 */ 766 atomic_t sep_tg_pt_ref_cnt; 767 spinlock_t sep_alua_lock; 768 struct mutex sep_tg_pt_md_mutex; 769 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; 770 struct se_lun *sep_lun; 771 struct se_portal_group *sep_tpg; 772 struct list_head sep_alua_list; 773 struct list_head sep_list; 774 }; 775 776 struct se_tpg_np { 777 struct se_portal_group *tpg_np_parent; 778 struct config_group tpg_np_group; 779 }; 780 781 struct se_portal_group { 782 /* Type of target portal group, see transport_tpg_type_table */ 783 enum transport_tpg_type_table se_tpg_type; 784 /* Number of ACLed Initiator Nodes for this TPG */ 785 u32 num_node_acls; 786 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 787 atomic_t tpg_pr_ref_count; 788 /* Spinlock for adding/removing ACLed Nodes */ 789 spinlock_t acl_node_lock; 790 /* Spinlock for adding/removing sessions */ 791 spinlock_t session_lock; 792 spinlock_t tpg_lun_lock; 793 /* Pointer to $FABRIC_MOD portal group */ 794 void *se_tpg_fabric_ptr; 795 struct list_head se_tpg_node; 796 /* linked list for initiator ACL list */ 797 struct list_head acl_node_list; 798 struct se_lun **tpg_lun_list; 799 struct se_lun tpg_virt_lun0; 800 /* List of TCM sessions associated wth this TPG */ 801 struct list_head tpg_sess_list; 802 /* Pointer to $FABRIC_MOD dependent code */ 803 struct target_core_fabric_ops *se_tpg_tfo; 804 struct se_wwn *se_tpg_wwn; 805 struct config_group tpg_group; 806 struct config_group *tpg_default_groups[6]; 807 struct config_group tpg_lun_group; 808 struct config_group tpg_np_group; 809 struct config_group tpg_acl_group; 810 struct config_group tpg_attrib_group; 811 struct config_group tpg_param_group; 812 }; 813 814 struct se_wwn { 815 struct target_fabric_configfs *wwn_tf; 816 struct config_group wwn_group; 817 struct config_group *wwn_default_groups[2]; 818 struct config_group fabric_stat_group; 819 }; 820 821 #endif /* TARGET_CORE_BASE_H */ 822