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 <linux/percpu_ida.h> 9 #include <linux/t10-pi.h> 10 #include <net/sock.h> 11 #include <net/tcp.h> 12 13 #define TARGET_CORE_VERSION "v5.0" 14 15 /* 16 * Maximum size of a CDB that can be stored in se_cmd without allocating 17 * memory dynamically for the CDB. 18 */ 19 #define TCM_MAX_COMMAND_SIZE 32 20 /* 21 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently 22 * defined 96, but the real limit is 252 (or 260 including the header) 23 */ 24 #define TRANSPORT_SENSE_BUFFER 96 25 /* Used by transport_send_check_condition_and_sense() */ 26 #define SPC_SENSE_KEY_OFFSET 2 27 #define SPC_ADD_SENSE_LEN_OFFSET 7 28 #define SPC_DESC_TYPE_OFFSET 8 29 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9 30 #define SPC_VALIDITY_OFFSET 10 31 #define SPC_ASC_KEY_OFFSET 12 32 #define SPC_ASCQ_KEY_OFFSET 13 33 #define TRANSPORT_IQN_LEN 224 34 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ 35 #define LU_GROUP_NAME_BUF 256 36 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ 37 #define TG_PT_GROUP_NAME_BUF 256 38 /* Used to parse VPD into struct t10_vpd */ 39 #define VPD_TMP_BUF_SIZE 254 40 /* Used by transport_generic_cmd_sequencer() */ 41 #define READ_BLOCK_LEN 6 42 #define READ_CAP_LEN 8 43 #define READ_POSITION_LEN 20 44 #define INQUIRY_LEN 36 45 /* Used by transport_get_inquiry_vpd_serial() */ 46 #define INQUIRY_VPD_SERIAL_LEN 254 47 /* Used by transport_get_inquiry_vpd_device_ident() */ 48 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 49 50 /* Attempts before moving from SHORT to LONG */ 51 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 52 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ 53 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ 54 55 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ 56 57 /* struct se_dev_attrib sanity values */ 58 /* Default max_unmap_lba_count */ 59 #define DA_MAX_UNMAP_LBA_COUNT 0 60 /* Default max_unmap_block_desc_count */ 61 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 62 /* Default unmap_granularity */ 63 #define DA_UNMAP_GRANULARITY_DEFAULT 0 64 /* Default unmap_granularity_alignment */ 65 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 66 /* Default unmap_zeroes_data */ 67 #define DA_UNMAP_ZEROES_DATA_DEFAULT 0 68 /* Default max_write_same_len, disabled by default */ 69 #define DA_MAX_WRITE_SAME_LEN 0 70 /* Use a model alias based on the configfs backend device name */ 71 #define DA_EMULATE_MODEL_ALIAS 0 72 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ 73 #define DA_EMULATE_WRITE_CACHE 0 74 /* Emulation for UNIT ATTENTION Interlock Control */ 75 #define DA_EMULATE_UA_INTLLCK_CTRL 0 76 /* Emulation for TASK_ABORTED status (TAS) by default */ 77 #define DA_EMULATE_TAS 1 78 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ 79 #define DA_EMULATE_TPU 0 80 /* 81 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using 82 * block/blk-lib.c:blkdev_issue_discard() 83 */ 84 #define DA_EMULATE_TPWS 0 85 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */ 86 #define DA_EMULATE_CAW 1 87 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */ 88 #define DA_EMULATE_3PC 1 89 /* No Emulation for PSCSI by default */ 90 #define DA_EMULATE_ALUA 0 91 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ 92 #define DA_ENFORCE_PR_ISIDS 1 93 /* Force SPC-3 PR Activate Persistence across Target Power Loss */ 94 #define DA_FORCE_PR_APTPL 0 95 #define DA_STATUS_MAX_SECTORS_MIN 16 96 #define DA_STATUS_MAX_SECTORS_MAX 8192 97 /* By default don't report non-rotating (solid state) medium */ 98 #define DA_IS_NONROT 0 99 /* Queue Algorithm Modifier default for restricted reordering in control mode page */ 100 #define DA_EMULATE_REST_REORD 0 101 102 #define SE_INQUIRY_BUF 1024 103 #define SE_MODE_PAGE_BUF 512 104 #define SE_SENSE_BUF 96 105 106 /* struct se_hba->hba_flags */ 107 enum hba_flags_table { 108 HBA_FLAGS_INTERNAL_USE = 0x01, 109 HBA_FLAGS_PSCSI_MODE = 0x02, 110 }; 111 112 /* Special transport agnostic struct se_cmd->t_states */ 113 enum transport_state_table { 114 TRANSPORT_NO_STATE = 0, 115 TRANSPORT_NEW_CMD = 1, 116 TRANSPORT_WRITE_PENDING = 3, 117 TRANSPORT_PROCESSING = 5, 118 TRANSPORT_COMPLETE = 6, 119 TRANSPORT_ISTATE_PROCESSING = 11, 120 TRANSPORT_COMPLETE_QF_WP = 18, 121 TRANSPORT_COMPLETE_QF_OK = 19, 122 }; 123 124 /* Used for struct se_cmd->se_cmd_flags */ 125 enum se_cmd_flags_table { 126 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 127 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 128 SCF_EMULATED_TASK_SENSE = 0x00000004, 129 SCF_SCSI_DATA_CDB = 0x00000008, 130 SCF_SCSI_TMR_CDB = 0x00000010, 131 SCF_FUA = 0x00000080, 132 SCF_SE_LUN_CMD = 0x00000100, 133 SCF_BIDI = 0x00000400, 134 SCF_SENT_CHECK_CONDITION = 0x00000800, 135 SCF_OVERFLOW_BIT = 0x00001000, 136 SCF_UNDERFLOW_BIT = 0x00002000, 137 SCF_SEND_DELAYED_TAS = 0x00004000, 138 SCF_ALUA_NON_OPTIMIZED = 0x00008000, 139 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, 140 SCF_COMPARE_AND_WRITE = 0x00080000, 141 SCF_COMPARE_AND_WRITE_POST = 0x00100000, 142 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000, 143 SCF_ACK_KREF = 0x00400000, 144 SCF_USE_CPUID = 0x00800000, 145 }; 146 147 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 148 enum transport_lunflags_table { 149 TRANSPORT_LUNFLAGS_READ_ONLY = 0x01, 150 TRANSPORT_LUNFLAGS_READ_WRITE = 0x02, 151 }; 152 153 /* 154 * Used by transport_send_check_condition_and_sense() 155 * to signal which ASC/ASCQ sense payload should be built. 156 */ 157 typedef unsigned __bitwise__ sense_reason_t; 158 159 enum tcm_sense_reason_table { 160 #define R(x) (__force sense_reason_t )(x) 161 TCM_NO_SENSE = R(0x00), 162 TCM_NON_EXISTENT_LUN = R(0x01), 163 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 164 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 165 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 166 TCM_SERVICE_CRC_ERROR = R(0x05), 167 TCM_SNACK_REJECTED = R(0x06), 168 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 169 TCM_INVALID_CDB_FIELD = R(0x08), 170 TCM_INVALID_PARAMETER_LIST = R(0x09), 171 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 172 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 173 TCM_WRITE_PROTECTED = R(0x0c), 174 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 175 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 176 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 177 TCM_RESERVATION_CONFLICT = R(0x10), 178 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 179 TCM_OUT_OF_RESOURCES = R(0x12), 180 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), 181 TCM_MISCOMPARE_VERIFY = R(0x14), 182 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), 183 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), 184 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), 185 #undef R 186 }; 187 188 enum target_sc_flags_table { 189 TARGET_SCF_BIDI_OP = 0x01, 190 TARGET_SCF_ACK_KREF = 0x02, 191 TARGET_SCF_UNKNOWN_SIZE = 0x04, 192 TARGET_SCF_USE_CPUID = 0x08, 193 }; 194 195 /* fabric independent task management function values */ 196 enum tcm_tmreq_table { 197 TMR_ABORT_TASK = 1, 198 TMR_ABORT_TASK_SET = 2, 199 TMR_CLEAR_ACA = 3, 200 TMR_CLEAR_TASK_SET = 4, 201 TMR_LUN_RESET = 5, 202 TMR_TARGET_WARM_RESET = 6, 203 TMR_TARGET_COLD_RESET = 7, 204 }; 205 206 /* fabric independent task management response values */ 207 enum tcm_tmrsp_table { 208 TMR_FUNCTION_FAILED = 0, 209 TMR_FUNCTION_COMPLETE = 1, 210 TMR_TASK_DOES_NOT_EXIST = 2, 211 TMR_LUN_DOES_NOT_EXIST = 3, 212 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, 213 TMR_FUNCTION_REJECTED = 5, 214 }; 215 216 /* 217 * Used for target SCSI statistics 218 */ 219 typedef enum { 220 SCSI_INST_INDEX, 221 SCSI_DEVICE_INDEX, 222 SCSI_AUTH_INTR_INDEX, 223 SCSI_INDEX_TYPE_MAX 224 } scsi_index_t; 225 226 struct se_cmd; 227 228 struct t10_alua_lba_map_member { 229 struct list_head lba_map_mem_list; 230 int lba_map_mem_alua_state; 231 int lba_map_mem_alua_pg_id; 232 }; 233 234 struct t10_alua_lba_map { 235 u64 lba_map_first_lba; 236 u64 lba_map_last_lba; 237 struct list_head lba_map_list; 238 struct list_head lba_map_mem_list; 239 }; 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 /* Referrals support */ 246 spinlock_t lba_map_lock; 247 u32 lba_map_segment_size; 248 u32 lba_map_segment_multiplier; 249 struct list_head lba_map_list; 250 spinlock_t tg_pt_gps_lock; 251 struct se_device *t10_dev; 252 /* Used for default ALUA Target Port Group */ 253 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 254 /* Used for default ALUA Target Port Group ConfigFS group */ 255 struct config_group alua_tg_pt_gps_group; 256 struct list_head tg_pt_gps_list; 257 }; 258 259 struct t10_alua_lu_gp { 260 u16 lu_gp_id; 261 int lu_gp_valid_id; 262 u32 lu_gp_members; 263 atomic_t lu_gp_ref_cnt; 264 spinlock_t lu_gp_lock; 265 struct config_group lu_gp_group; 266 struct list_head lu_gp_node; 267 struct list_head lu_gp_mem_list; 268 }; 269 270 struct t10_alua_lu_gp_member { 271 bool lu_gp_assoc; 272 atomic_t lu_gp_mem_ref_cnt; 273 spinlock_t lu_gp_mem_lock; 274 struct t10_alua_lu_gp *lu_gp; 275 struct se_device *lu_gp_mem_dev; 276 struct list_head lu_gp_mem_list; 277 }; 278 279 struct t10_alua_tg_pt_gp { 280 u16 tg_pt_gp_id; 281 int tg_pt_gp_valid_id; 282 int tg_pt_gp_alua_supported_states; 283 int tg_pt_gp_alua_pending_state; 284 int tg_pt_gp_alua_previous_state; 285 int tg_pt_gp_alua_access_status; 286 int tg_pt_gp_alua_access_type; 287 int tg_pt_gp_nonop_delay_msecs; 288 int tg_pt_gp_trans_delay_msecs; 289 int tg_pt_gp_implicit_trans_secs; 290 int tg_pt_gp_pref; 291 int tg_pt_gp_write_metadata; 292 u32 tg_pt_gp_members; 293 atomic_t tg_pt_gp_alua_access_state; 294 atomic_t tg_pt_gp_ref_cnt; 295 spinlock_t tg_pt_gp_lock; 296 struct mutex tg_pt_gp_md_mutex; 297 struct se_device *tg_pt_gp_dev; 298 struct config_group tg_pt_gp_group; 299 struct list_head tg_pt_gp_list; 300 struct list_head tg_pt_gp_lun_list; 301 struct se_lun *tg_pt_gp_alua_lun; 302 struct se_node_acl *tg_pt_gp_alua_nacl; 303 struct delayed_work tg_pt_gp_transition_work; 304 struct completion *tg_pt_gp_transition_complete; 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 u16 pr_aptpl_rpti; 341 u16 pr_reg_tpgt; 342 /* Reservation effects all target ports */ 343 int pr_reg_all_tg_pt; 344 /* Activate Persistence across Target Power Loss */ 345 int pr_reg_aptpl; 346 int pr_res_holder; 347 int pr_res_type; 348 int pr_res_scope; 349 /* Used for fabric initiator WWPNs using a ISID */ 350 bool isid_present_at_reg; 351 u64 pr_res_mapped_lun; 352 u64 pr_aptpl_target_lun; 353 u16 tg_pt_sep_rtpi; 354 u32 pr_res_generation; 355 u64 pr_reg_bin_isid; 356 u64 pr_res_key; 357 atomic_t pr_res_holders; 358 struct se_node_acl *pr_reg_nacl; 359 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ 360 struct se_dev_entry *pr_reg_deve; 361 struct list_head pr_reg_list; 362 struct list_head pr_reg_abort_list; 363 struct list_head pr_reg_aptpl_list; 364 struct list_head pr_reg_atp_list; 365 struct list_head pr_reg_atp_mem_list; 366 }; 367 368 struct t10_reservation { 369 /* Reservation effects all target ports */ 370 int pr_all_tg_pt; 371 /* Activate Persistence across Target Power Loss enabled 372 * for SCSI device */ 373 int pr_aptpl_active; 374 #define PR_APTPL_BUF_LEN 262144 375 u32 pr_generation; 376 spinlock_t registration_lock; 377 spinlock_t aptpl_reg_lock; 378 /* 379 * This will always be set by one individual I_T Nexus. 380 * However with all_tg_pt=1, other I_T Nexus from the 381 * same initiator can access PR reg/res info on a different 382 * target port. 383 * 384 * There is also the 'All Registrants' case, where there is 385 * a single *pr_res_holder of the reservation, but all 386 * registrations are considered reservation holders. 387 */ 388 struct se_node_acl *pr_res_holder; 389 struct list_head registration_list; 390 struct list_head aptpl_reg_list; 391 }; 392 393 struct se_tmr_req { 394 /* Task Management function to be performed */ 395 u8 function; 396 /* Task Management response to send */ 397 u8 response; 398 int call_transport; 399 /* Reference to ITT that Task Mgmt should be performed */ 400 u64 ref_task_tag; 401 void *fabric_tmr_ptr; 402 struct se_cmd *task_cmd; 403 struct se_device *tmr_dev; 404 struct se_lun *tmr_lun; 405 struct list_head tmr_list; 406 }; 407 408 enum target_prot_op { 409 TARGET_PROT_NORMAL = 0, 410 TARGET_PROT_DIN_INSERT = (1 << 0), 411 TARGET_PROT_DOUT_INSERT = (1 << 1), 412 TARGET_PROT_DIN_STRIP = (1 << 2), 413 TARGET_PROT_DOUT_STRIP = (1 << 3), 414 TARGET_PROT_DIN_PASS = (1 << 4), 415 TARGET_PROT_DOUT_PASS = (1 << 5), 416 }; 417 418 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ 419 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ 420 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS 421 422 enum target_prot_type { 423 TARGET_DIF_TYPE0_PROT, 424 TARGET_DIF_TYPE1_PROT, 425 TARGET_DIF_TYPE2_PROT, 426 TARGET_DIF_TYPE3_PROT, 427 }; 428 429 enum target_core_dif_check { 430 TARGET_DIF_CHECK_GUARD = 0x1 << 0, 431 TARGET_DIF_CHECK_APPTAG = 0x1 << 1, 432 TARGET_DIF_CHECK_REFTAG = 0x1 << 2, 433 }; 434 435 /* for sam_task_attr */ 436 #define TCM_SIMPLE_TAG 0x20 437 #define TCM_HEAD_TAG 0x21 438 #define TCM_ORDERED_TAG 0x22 439 #define TCM_ACA_TAG 0x24 440 441 struct se_cmd { 442 /* SAM response code being sent to initiator */ 443 u8 scsi_status; 444 u8 scsi_asc; 445 u8 scsi_ascq; 446 u16 scsi_sense_length; 447 unsigned cmd_wait_set:1; 448 unsigned unknown_data_length:1; 449 bool state_active:1; 450 u64 tag; /* SAM command identifier aka task tag */ 451 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 452 int alua_nonop_delay; 453 /* See include/linux/dma-mapping.h */ 454 enum dma_data_direction data_direction; 455 /* For SAM Task Attribute */ 456 int sam_task_attr; 457 /* Used for se_sess->sess_tag_pool */ 458 unsigned int map_tag; 459 /* Transport protocol dependent state, see transport_state_table */ 460 enum transport_state_table t_state; 461 /* See se_cmd_flags_table */ 462 u32 se_cmd_flags; 463 /* Total size in bytes associated with command */ 464 u32 data_length; 465 u32 residual_count; 466 u64 orig_fe_lun; 467 /* Persistent Reservation key */ 468 u64 pr_res_key; 469 /* Used for sense data */ 470 void *sense_buffer; 471 struct list_head se_delayed_node; 472 struct list_head se_qf_node; 473 struct se_device *se_dev; 474 struct se_lun *se_lun; 475 /* Only used for internal passthrough and legacy TCM fabric modules */ 476 struct se_session *se_sess; 477 struct se_tmr_req *se_tmr_req; 478 struct list_head se_cmd_list; 479 struct completion cmd_wait_comp; 480 const struct target_core_fabric_ops *se_tfo; 481 sense_reason_t (*execute_cmd)(struct se_cmd *); 482 sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *); 483 void *protocol_data; 484 485 unsigned char *t_task_cdb; 486 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 487 unsigned long long t_task_lba; 488 unsigned int t_task_nolb; 489 unsigned int transport_state; 490 #define CMD_T_ABORTED (1 << 0) 491 #define CMD_T_ACTIVE (1 << 1) 492 #define CMD_T_COMPLETE (1 << 2) 493 #define CMD_T_SENT (1 << 4) 494 #define CMD_T_STOP (1 << 5) 495 #define CMD_T_DEV_ACTIVE (1 << 7) 496 #define CMD_T_BUSY (1 << 9) 497 #define CMD_T_TAS (1 << 10) 498 #define CMD_T_FABRIC_STOP (1 << 11) 499 spinlock_t t_state_lock; 500 struct kref cmd_kref; 501 struct completion t_transport_stop_comp; 502 503 struct work_struct work; 504 505 struct scatterlist *t_data_sg; 506 struct scatterlist *t_data_sg_orig; 507 unsigned int t_data_nents; 508 unsigned int t_data_nents_orig; 509 void *t_data_vmap; 510 struct scatterlist *t_bidi_data_sg; 511 unsigned int t_bidi_data_nents; 512 513 /* Used for lun->lun_ref counting */ 514 int lun_ref_active; 515 516 struct list_head state_list; 517 518 /* backend private data */ 519 void *priv; 520 521 /* DIF related members */ 522 enum target_prot_op prot_op; 523 enum target_prot_type prot_type; 524 u8 prot_checks; 525 bool prot_pto; 526 u32 prot_length; 527 u32 reftag_seed; 528 struct scatterlist *t_prot_sg; 529 unsigned int t_prot_nents; 530 sense_reason_t pi_err; 531 sector_t bad_sector; 532 int cpuid; 533 }; 534 535 struct se_ua { 536 u8 ua_asc; 537 u8 ua_ascq; 538 struct list_head ua_nacl_list; 539 }; 540 541 struct se_node_acl { 542 char initiatorname[TRANSPORT_IQN_LEN]; 543 /* Used to signal demo mode created ACL, disabled by default */ 544 bool dynamic_node_acl; 545 bool acl_stop:1; 546 u32 queue_depth; 547 u32 acl_index; 548 enum target_prot_type saved_prot_type; 549 #define MAX_ACL_TAG_SIZE 64 550 char acl_tag[MAX_ACL_TAG_SIZE]; 551 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 552 atomic_t acl_pr_ref_count; 553 struct hlist_head lun_entry_hlist; 554 struct se_session *nacl_sess; 555 struct se_portal_group *se_tpg; 556 struct mutex lun_entry_mutex; 557 spinlock_t nacl_sess_lock; 558 struct config_group acl_group; 559 struct config_group acl_attrib_group; 560 struct config_group acl_auth_group; 561 struct config_group acl_param_group; 562 struct config_group acl_fabric_stat_group; 563 struct config_group *acl_default_groups[5]; 564 struct list_head acl_list; 565 struct list_head acl_sess_list; 566 struct completion acl_free_comp; 567 struct kref acl_kref; 568 }; 569 570 static inline struct se_node_acl *acl_to_nacl(struct config_item *item) 571 { 572 return container_of(to_config_group(item), struct se_node_acl, 573 acl_group); 574 } 575 576 static inline struct se_node_acl *attrib_to_nacl(struct config_item *item) 577 { 578 return container_of(to_config_group(item), struct se_node_acl, 579 acl_attrib_group); 580 } 581 582 static inline struct se_node_acl *auth_to_nacl(struct config_item *item) 583 { 584 return container_of(to_config_group(item), struct se_node_acl, 585 acl_auth_group); 586 } 587 588 static inline struct se_node_acl *param_to_nacl(struct config_item *item) 589 { 590 return container_of(to_config_group(item), struct se_node_acl, 591 acl_param_group); 592 } 593 594 static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) 595 { 596 return container_of(to_config_group(item), struct se_node_acl, 597 acl_fabric_stat_group); 598 } 599 600 struct se_session { 601 unsigned sess_tearing_down:1; 602 u64 sess_bin_isid; 603 enum target_prot_op sup_prot_ops; 604 enum target_prot_type sess_prot_type; 605 struct se_node_acl *se_node_acl; 606 struct se_portal_group *se_tpg; 607 void *fabric_sess_ptr; 608 struct list_head sess_list; 609 struct list_head sess_acl_list; 610 struct list_head sess_cmd_list; 611 struct list_head sess_wait_list; 612 spinlock_t sess_cmd_lock; 613 struct kref sess_kref; 614 void *sess_cmd_map; 615 struct percpu_ida sess_tag_pool; 616 }; 617 618 struct se_device; 619 struct se_transform_info; 620 struct scatterlist; 621 622 struct se_ml_stat_grps { 623 struct config_group stat_group; 624 struct config_group scsi_auth_intr_group; 625 struct config_group scsi_att_intr_port_group; 626 }; 627 628 struct se_lun_acl { 629 u64 mapped_lun; 630 struct se_node_acl *se_lun_nacl; 631 struct se_lun *se_lun; 632 struct config_group se_lun_group; 633 struct se_ml_stat_grps ml_stat_grps; 634 }; 635 636 struct se_dev_entry { 637 /* See transport_lunflags_table */ 638 u64 mapped_lun; 639 u64 pr_res_key; 640 u64 creation_time; 641 u32 lun_flags; 642 u32 attach_count; 643 atomic_long_t total_cmds; 644 atomic_long_t read_bytes; 645 atomic_long_t write_bytes; 646 atomic_t ua_count; 647 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 648 struct kref pr_kref; 649 struct completion pr_comp; 650 struct se_lun_acl __rcu *se_lun_acl; 651 spinlock_t ua_lock; 652 struct se_lun __rcu *se_lun; 653 #define DEF_PR_REG_ACTIVE 1 654 unsigned long deve_flags; 655 struct list_head alua_port_list; 656 struct list_head lun_link; 657 struct list_head ua_list; 658 struct hlist_node link; 659 struct rcu_head rcu_head; 660 }; 661 662 struct se_dev_attrib { 663 int emulate_model_alias; 664 int emulate_dpo; 665 int emulate_fua_write; 666 int emulate_fua_read; 667 int emulate_write_cache; 668 int emulate_ua_intlck_ctrl; 669 int emulate_tas; 670 int emulate_tpu; 671 int emulate_tpws; 672 int emulate_caw; 673 int emulate_3pc; 674 int pi_prot_format; 675 enum target_prot_type pi_prot_type; 676 enum target_prot_type hw_pi_prot_type; 677 int enforce_pr_isids; 678 int force_pr_aptpl; 679 int is_nonrot; 680 int emulate_rest_reord; 681 int unmap_zeroes_data; 682 u32 hw_block_size; 683 u32 block_size; 684 u32 hw_max_sectors; 685 u32 optimal_sectors; 686 u32 hw_queue_depth; 687 u32 queue_depth; 688 u32 max_unmap_lba_count; 689 u32 max_unmap_block_desc_count; 690 u32 unmap_granularity; 691 u32 unmap_granularity_alignment; 692 u32 max_write_same_len; 693 u32 max_bytes_per_io; 694 struct se_device *da_dev; 695 struct config_group da_group; 696 }; 697 698 struct se_port_stat_grps { 699 struct config_group stat_group; 700 struct config_group scsi_port_group; 701 struct config_group scsi_tgt_port_group; 702 struct config_group scsi_transport_group; 703 }; 704 705 struct scsi_port_stats { 706 atomic_long_t cmd_pdus; 707 atomic_long_t tx_data_octets; 708 atomic_long_t rx_data_octets; 709 }; 710 711 struct se_lun { 712 u64 unpacked_lun; 713 #define SE_LUN_LINK_MAGIC 0xffff7771 714 u32 lun_link_magic; 715 u32 lun_access; 716 u32 lun_index; 717 718 /* RELATIVE TARGET PORT IDENTIFER */ 719 u16 lun_rtpi; 720 atomic_t lun_acl_count; 721 struct se_device __rcu *lun_se_dev; 722 723 struct list_head lun_deve_list; 724 spinlock_t lun_deve_lock; 725 726 /* ALUA state */ 727 int lun_tg_pt_secondary_stat; 728 int lun_tg_pt_secondary_write_md; 729 atomic_t lun_tg_pt_secondary_offline; 730 struct mutex lun_tg_pt_md_mutex; 731 732 /* ALUA target port group linkage */ 733 struct list_head lun_tg_pt_gp_link; 734 struct t10_alua_tg_pt_gp *lun_tg_pt_gp; 735 spinlock_t lun_tg_pt_gp_lock; 736 737 struct se_portal_group *lun_tpg; 738 struct scsi_port_stats lun_stats; 739 struct config_group lun_group; 740 struct se_port_stat_grps port_stat_grps; 741 struct completion lun_ref_comp; 742 struct percpu_ref lun_ref; 743 struct list_head lun_dev_link; 744 struct hlist_node link; 745 struct rcu_head rcu_head; 746 }; 747 748 struct se_dev_stat_grps { 749 struct config_group stat_group; 750 struct config_group scsi_dev_group; 751 struct config_group scsi_tgt_dev_group; 752 struct config_group scsi_lu_group; 753 }; 754 755 struct se_device { 756 #define SE_DEV_LINK_MAGIC 0xfeeddeef 757 u32 dev_link_magic; 758 /* RELATIVE TARGET PORT IDENTIFER Counter */ 759 u16 dev_rpti_counter; 760 /* Used for SAM Task Attribute ordering */ 761 u32 dev_cur_ordered_id; 762 u32 dev_flags; 763 #define DF_CONFIGURED 0x00000001 764 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 765 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 766 #define DF_USING_UDEV_PATH 0x00000008 767 #define DF_USING_ALIAS 0x00000010 768 #define DF_READ_ONLY 0x00000020 769 /* Physical device queue depth */ 770 u32 queue_depth; 771 /* Used for SPC-2 reservations enforce of ISIDs */ 772 u64 dev_res_bin_isid; 773 /* Pointer to transport specific device structure */ 774 u32 dev_index; 775 u64 creation_time; 776 atomic_long_t num_resets; 777 atomic_long_t num_cmds; 778 atomic_long_t read_bytes; 779 atomic_long_t write_bytes; 780 /* Active commands on this virtual SE device */ 781 atomic_t simple_cmds; 782 atomic_t dev_ordered_sync; 783 atomic_t dev_qf_count; 784 u32 export_count; 785 spinlock_t delayed_cmd_lock; 786 spinlock_t execute_task_lock; 787 spinlock_t dev_reservation_lock; 788 unsigned int dev_reservation_flags; 789 #define DRF_SPC2_RESERVATIONS 0x00000001 790 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 791 spinlock_t se_port_lock; 792 spinlock_t se_tmr_lock; 793 spinlock_t qf_cmd_lock; 794 struct semaphore caw_sem; 795 /* Used for legacy SPC-2 reservationsa */ 796 struct se_node_acl *dev_reserved_node_acl; 797 /* Used for ALUA Logical Unit Group membership */ 798 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 799 /* Used for SPC-3 Persistent Reservations */ 800 struct t10_pr_registration *dev_pr_res_holder; 801 struct list_head dev_sep_list; 802 struct list_head dev_tmr_list; 803 struct workqueue_struct *tmr_wq; 804 struct work_struct qf_work_queue; 805 struct list_head delayed_cmd_list; 806 struct list_head state_list; 807 struct list_head qf_cmd_list; 808 struct list_head g_dev_node; 809 /* Pointer to associated SE HBA */ 810 struct se_hba *se_hba; 811 /* T10 Inquiry and VPD WWN Information */ 812 struct t10_wwn t10_wwn; 813 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 814 struct t10_alua t10_alua; 815 /* T10 SPC-2 + SPC-3 Reservations */ 816 struct t10_reservation t10_pr; 817 struct se_dev_attrib dev_attrib; 818 struct config_group dev_group; 819 struct config_group dev_pr_group; 820 struct se_dev_stat_grps dev_stat_grps; 821 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 822 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 823 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 824 unsigned char udev_path[SE_UDEV_PATH_LEN]; 825 /* Pointer to template of function pointers for transport */ 826 const struct target_backend_ops *transport; 827 /* Linked list for struct se_hba struct se_device list */ 828 struct list_head dev_list; 829 struct se_lun xcopy_lun; 830 /* Protection Information */ 831 int prot_length; 832 /* For se_lun->lun_se_dev RCU read-side critical access */ 833 u32 hba_index; 834 struct rcu_head rcu_head; 835 }; 836 837 struct se_hba { 838 u16 hba_tpgt; 839 u32 hba_id; 840 /* See hba_flags_table */ 841 u32 hba_flags; 842 /* Virtual iSCSI devices attached. */ 843 u32 dev_count; 844 u32 hba_index; 845 /* Pointer to transport specific host structure. */ 846 void *hba_ptr; 847 struct list_head hba_node; 848 spinlock_t device_lock; 849 struct config_group hba_group; 850 struct mutex hba_access_mutex; 851 struct target_backend *backend; 852 }; 853 854 struct se_tpg_np { 855 struct se_portal_group *tpg_np_parent; 856 struct config_group tpg_np_group; 857 }; 858 859 static inline struct se_tpg_np *to_tpg_np(struct config_item *item) 860 { 861 return container_of(to_config_group(item), struct se_tpg_np, 862 tpg_np_group); 863 } 864 865 struct se_portal_group { 866 /* 867 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. 868 * 869 * Negative values can be used by fabric drivers for internal use TPGs. 870 */ 871 int proto_id; 872 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 873 atomic_t tpg_pr_ref_count; 874 /* Spinlock for adding/removing ACLed Nodes */ 875 struct mutex acl_node_mutex; 876 /* Spinlock for adding/removing sessions */ 877 spinlock_t session_lock; 878 struct mutex tpg_lun_mutex; 879 struct list_head se_tpg_node; 880 /* linked list for initiator ACL list */ 881 struct list_head acl_node_list; 882 struct hlist_head tpg_lun_hlist; 883 struct se_lun *tpg_virt_lun0; 884 /* List of TCM sessions associated wth this TPG */ 885 struct list_head tpg_sess_list; 886 /* Pointer to $FABRIC_MOD dependent code */ 887 const struct target_core_fabric_ops *se_tpg_tfo; 888 struct se_wwn *se_tpg_wwn; 889 struct config_group tpg_group; 890 struct config_group *tpg_default_groups[7]; 891 struct config_group tpg_lun_group; 892 struct config_group tpg_np_group; 893 struct config_group tpg_acl_group; 894 struct config_group tpg_attrib_group; 895 struct config_group tpg_auth_group; 896 struct config_group tpg_param_group; 897 }; 898 899 static inline struct se_portal_group *to_tpg(struct config_item *item) 900 { 901 return container_of(to_config_group(item), struct se_portal_group, 902 tpg_group); 903 } 904 905 static inline struct se_portal_group *attrib_to_tpg(struct config_item *item) 906 { 907 return container_of(to_config_group(item), struct se_portal_group, 908 tpg_attrib_group); 909 } 910 911 static inline struct se_portal_group *auth_to_tpg(struct config_item *item) 912 { 913 return container_of(to_config_group(item), struct se_portal_group, 914 tpg_auth_group); 915 } 916 917 static inline struct se_portal_group *param_to_tpg(struct config_item *item) 918 { 919 return container_of(to_config_group(item), struct se_portal_group, 920 tpg_param_group); 921 } 922 923 struct se_wwn { 924 struct target_fabric_configfs *wwn_tf; 925 struct config_group wwn_group; 926 struct config_group *wwn_default_groups[2]; 927 struct config_group fabric_stat_group; 928 }; 929 930 static inline void atomic_inc_mb(atomic_t *v) 931 { 932 smp_mb__before_atomic(); 933 atomic_inc(v); 934 smp_mb__after_atomic(); 935 } 936 937 static inline void atomic_dec_mb(atomic_t *v) 938 { 939 smp_mb__before_atomic(); 940 atomic_dec(v); 941 smp_mb__after_atomic(); 942 } 943 944 #endif /* TARGET_CORE_BASE_H */ 945