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 SCF_TASK_ATTR_SET = 0x01000000, 146 }; 147 148 /* 149 * Used by transport_send_check_condition_and_sense() 150 * to signal which ASC/ASCQ sense payload should be built. 151 */ 152 typedef unsigned __bitwise__ sense_reason_t; 153 154 enum tcm_sense_reason_table { 155 #define R(x) (__force sense_reason_t )(x) 156 TCM_NO_SENSE = R(0x00), 157 TCM_NON_EXISTENT_LUN = R(0x01), 158 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 159 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 160 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 161 TCM_SERVICE_CRC_ERROR = R(0x05), 162 TCM_SNACK_REJECTED = R(0x06), 163 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 164 TCM_INVALID_CDB_FIELD = R(0x08), 165 TCM_INVALID_PARAMETER_LIST = R(0x09), 166 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 167 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 168 TCM_WRITE_PROTECTED = R(0x0c), 169 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 170 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 171 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 172 TCM_RESERVATION_CONFLICT = R(0x10), 173 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 174 TCM_OUT_OF_RESOURCES = R(0x12), 175 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), 176 TCM_MISCOMPARE_VERIFY = R(0x14), 177 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), 178 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), 179 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), 180 TCM_COPY_TARGET_DEVICE_NOT_REACHABLE = R(0x18), 181 #undef R 182 }; 183 184 enum target_sc_flags_table { 185 TARGET_SCF_BIDI_OP = 0x01, 186 TARGET_SCF_ACK_KREF = 0x02, 187 TARGET_SCF_UNKNOWN_SIZE = 0x04, 188 TARGET_SCF_USE_CPUID = 0x08, 189 }; 190 191 /* fabric independent task management function values */ 192 enum tcm_tmreq_table { 193 TMR_ABORT_TASK = 1, 194 TMR_ABORT_TASK_SET = 2, 195 TMR_CLEAR_ACA = 3, 196 TMR_CLEAR_TASK_SET = 4, 197 TMR_LUN_RESET = 5, 198 TMR_TARGET_WARM_RESET = 6, 199 TMR_TARGET_COLD_RESET = 7, 200 }; 201 202 /* fabric independent task management response values */ 203 enum tcm_tmrsp_table { 204 TMR_FUNCTION_FAILED = 0, 205 TMR_FUNCTION_COMPLETE = 1, 206 TMR_TASK_DOES_NOT_EXIST = 2, 207 TMR_LUN_DOES_NOT_EXIST = 3, 208 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, 209 TMR_FUNCTION_REJECTED = 5, 210 }; 211 212 /* 213 * Used for target SCSI statistics 214 */ 215 typedef enum { 216 SCSI_INST_INDEX, 217 SCSI_DEVICE_INDEX, 218 SCSI_AUTH_INTR_INDEX, 219 SCSI_INDEX_TYPE_MAX 220 } scsi_index_t; 221 222 struct se_cmd; 223 224 struct t10_alua_lba_map_member { 225 struct list_head lba_map_mem_list; 226 int lba_map_mem_alua_state; 227 int lba_map_mem_alua_pg_id; 228 }; 229 230 struct t10_alua_lba_map { 231 u64 lba_map_first_lba; 232 u64 lba_map_last_lba; 233 struct list_head lba_map_list; 234 struct list_head lba_map_mem_list; 235 }; 236 237 struct t10_alua { 238 /* ALUA Target Port Group ID */ 239 u16 alua_tg_pt_gps_counter; 240 u32 alua_tg_pt_gps_count; 241 /* Referrals support */ 242 spinlock_t lba_map_lock; 243 u32 lba_map_segment_size; 244 u32 lba_map_segment_multiplier; 245 struct list_head lba_map_list; 246 spinlock_t tg_pt_gps_lock; 247 struct se_device *t10_dev; 248 /* Used for default ALUA Target Port Group */ 249 struct t10_alua_tg_pt_gp *default_tg_pt_gp; 250 /* Used for default ALUA Target Port Group ConfigFS group */ 251 struct config_group alua_tg_pt_gps_group; 252 struct list_head tg_pt_gps_list; 253 }; 254 255 struct t10_alua_lu_gp { 256 u16 lu_gp_id; 257 int lu_gp_valid_id; 258 u32 lu_gp_members; 259 atomic_t lu_gp_ref_cnt; 260 spinlock_t lu_gp_lock; 261 struct config_group lu_gp_group; 262 struct list_head lu_gp_node; 263 struct list_head lu_gp_mem_list; 264 }; 265 266 struct t10_alua_lu_gp_member { 267 bool lu_gp_assoc; 268 atomic_t lu_gp_mem_ref_cnt; 269 spinlock_t lu_gp_mem_lock; 270 struct t10_alua_lu_gp *lu_gp; 271 struct se_device *lu_gp_mem_dev; 272 struct list_head lu_gp_mem_list; 273 }; 274 275 struct t10_alua_tg_pt_gp { 276 u16 tg_pt_gp_id; 277 int tg_pt_gp_valid_id; 278 int tg_pt_gp_alua_supported_states; 279 int tg_pt_gp_alua_pending_state; 280 int tg_pt_gp_alua_previous_state; 281 int tg_pt_gp_alua_access_status; 282 int tg_pt_gp_alua_access_type; 283 int tg_pt_gp_nonop_delay_msecs; 284 int tg_pt_gp_trans_delay_msecs; 285 int tg_pt_gp_implicit_trans_secs; 286 int tg_pt_gp_pref; 287 int tg_pt_gp_write_metadata; 288 u32 tg_pt_gp_members; 289 atomic_t tg_pt_gp_alua_access_state; 290 atomic_t tg_pt_gp_ref_cnt; 291 spinlock_t tg_pt_gp_lock; 292 struct mutex tg_pt_gp_md_mutex; 293 struct se_device *tg_pt_gp_dev; 294 struct config_group tg_pt_gp_group; 295 struct list_head tg_pt_gp_list; 296 struct list_head tg_pt_gp_lun_list; 297 struct se_lun *tg_pt_gp_alua_lun; 298 struct se_node_acl *tg_pt_gp_alua_nacl; 299 struct delayed_work tg_pt_gp_transition_work; 300 struct completion *tg_pt_gp_transition_complete; 301 }; 302 303 struct t10_vpd { 304 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 305 int protocol_identifier_set; 306 u32 protocol_identifier; 307 u32 device_identifier_code_set; 308 u32 association; 309 u32 device_identifier_type; 310 struct list_head vpd_list; 311 }; 312 313 struct t10_wwn { 314 char vendor[8]; 315 char model[16]; 316 char revision[4]; 317 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 318 spinlock_t t10_vpd_lock; 319 struct se_device *t10_dev; 320 struct config_group t10_wwn_group; 321 struct list_head t10_vpd_list; 322 }; 323 324 struct t10_pr_registration { 325 /* Used for fabrics that contain WWN+ISID */ 326 #define PR_REG_ISID_LEN 16 327 /* PR_REG_ISID_LEN + ',i,0x' */ 328 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 329 char pr_reg_isid[PR_REG_ISID_LEN]; 330 /* Used during APTPL metadata reading */ 331 #define PR_APTPL_MAX_IPORT_LEN 256 332 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 333 /* Used during APTPL metadata reading */ 334 #define PR_APTPL_MAX_TPORT_LEN 256 335 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 336 u16 pr_aptpl_rpti; 337 u16 pr_reg_tpgt; 338 /* Reservation effects all target ports */ 339 int pr_reg_all_tg_pt; 340 /* Activate Persistence across Target Power Loss */ 341 int pr_reg_aptpl; 342 int pr_res_holder; 343 int pr_res_type; 344 int pr_res_scope; 345 /* Used for fabric initiator WWPNs using a ISID */ 346 bool isid_present_at_reg; 347 u64 pr_res_mapped_lun; 348 u64 pr_aptpl_target_lun; 349 u16 tg_pt_sep_rtpi; 350 u32 pr_res_generation; 351 u64 pr_reg_bin_isid; 352 u64 pr_res_key; 353 atomic_t pr_res_holders; 354 struct se_node_acl *pr_reg_nacl; 355 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ 356 struct se_dev_entry *pr_reg_deve; 357 struct list_head pr_reg_list; 358 struct list_head pr_reg_abort_list; 359 struct list_head pr_reg_aptpl_list; 360 struct list_head pr_reg_atp_list; 361 struct list_head pr_reg_atp_mem_list; 362 }; 363 364 struct t10_reservation { 365 /* Reservation effects all target ports */ 366 int pr_all_tg_pt; 367 /* Activate Persistence across Target Power Loss enabled 368 * for SCSI device */ 369 int pr_aptpl_active; 370 #define PR_APTPL_BUF_LEN 262144 371 u32 pr_generation; 372 spinlock_t registration_lock; 373 spinlock_t aptpl_reg_lock; 374 /* 375 * This will always be set by one individual I_T Nexus. 376 * However with all_tg_pt=1, other I_T Nexus from the 377 * same initiator can access PR reg/res info on a different 378 * target port. 379 * 380 * There is also the 'All Registrants' case, where there is 381 * a single *pr_res_holder of the reservation, but all 382 * registrations are considered reservation holders. 383 */ 384 struct se_node_acl *pr_res_holder; 385 struct list_head registration_list; 386 struct list_head aptpl_reg_list; 387 }; 388 389 struct se_tmr_req { 390 /* Task Management function to be performed */ 391 u8 function; 392 /* Task Management response to send */ 393 u8 response; 394 int call_transport; 395 /* Reference to ITT that Task Mgmt should be performed */ 396 u64 ref_task_tag; 397 void *fabric_tmr_ptr; 398 struct se_cmd *task_cmd; 399 struct se_device *tmr_dev; 400 struct se_lun *tmr_lun; 401 struct list_head tmr_list; 402 }; 403 404 enum target_prot_op { 405 TARGET_PROT_NORMAL = 0, 406 TARGET_PROT_DIN_INSERT = (1 << 0), 407 TARGET_PROT_DOUT_INSERT = (1 << 1), 408 TARGET_PROT_DIN_STRIP = (1 << 2), 409 TARGET_PROT_DOUT_STRIP = (1 << 3), 410 TARGET_PROT_DIN_PASS = (1 << 4), 411 TARGET_PROT_DOUT_PASS = (1 << 5), 412 }; 413 414 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ 415 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ 416 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS 417 418 enum target_prot_type { 419 TARGET_DIF_TYPE0_PROT, 420 TARGET_DIF_TYPE1_PROT, 421 TARGET_DIF_TYPE2_PROT, 422 TARGET_DIF_TYPE3_PROT, 423 }; 424 425 enum target_core_dif_check { 426 TARGET_DIF_CHECK_GUARD = 0x1 << 0, 427 TARGET_DIF_CHECK_APPTAG = 0x1 << 1, 428 TARGET_DIF_CHECK_REFTAG = 0x1 << 2, 429 }; 430 431 /* for sam_task_attr */ 432 #define TCM_SIMPLE_TAG 0x20 433 #define TCM_HEAD_TAG 0x21 434 #define TCM_ORDERED_TAG 0x22 435 #define TCM_ACA_TAG 0x24 436 437 struct se_cmd { 438 /* SAM response code being sent to initiator */ 439 u8 scsi_status; 440 u8 scsi_asc; 441 u8 scsi_ascq; 442 u16 scsi_sense_length; 443 unsigned cmd_wait_set:1; 444 unsigned unknown_data_length:1; 445 bool state_active:1; 446 u64 tag; /* SAM command identifier aka task tag */ 447 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 448 int alua_nonop_delay; 449 /* See include/linux/dma-mapping.h */ 450 enum dma_data_direction data_direction; 451 /* For SAM Task Attribute */ 452 int sam_task_attr; 453 /* Used for se_sess->sess_tag_pool */ 454 unsigned int map_tag; 455 /* Transport protocol dependent state, see transport_state_table */ 456 enum transport_state_table t_state; 457 /* See se_cmd_flags_table */ 458 u32 se_cmd_flags; 459 /* Total size in bytes associated with command */ 460 u32 data_length; 461 u32 residual_count; 462 u64 orig_fe_lun; 463 /* Persistent Reservation key */ 464 u64 pr_res_key; 465 /* Used for sense data */ 466 void *sense_buffer; 467 struct list_head se_delayed_node; 468 struct list_head se_qf_node; 469 struct se_device *se_dev; 470 struct se_lun *se_lun; 471 /* Only used for internal passthrough and legacy TCM fabric modules */ 472 struct se_session *se_sess; 473 struct se_tmr_req *se_tmr_req; 474 struct list_head se_cmd_list; 475 struct completion cmd_wait_comp; 476 const struct target_core_fabric_ops *se_tfo; 477 sense_reason_t (*execute_cmd)(struct se_cmd *); 478 sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *); 479 void *protocol_data; 480 481 unsigned char *t_task_cdb; 482 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 483 unsigned long long t_task_lba; 484 unsigned int t_task_nolb; 485 unsigned int transport_state; 486 #define CMD_T_ABORTED (1 << 0) 487 #define CMD_T_ACTIVE (1 << 1) 488 #define CMD_T_COMPLETE (1 << 2) 489 #define CMD_T_SENT (1 << 4) 490 #define CMD_T_STOP (1 << 5) 491 #define CMD_T_DEV_ACTIVE (1 << 7) 492 #define CMD_T_BUSY (1 << 9) 493 #define CMD_T_TAS (1 << 10) 494 #define CMD_T_FABRIC_STOP (1 << 11) 495 spinlock_t t_state_lock; 496 struct kref cmd_kref; 497 struct completion t_transport_stop_comp; 498 499 struct work_struct work; 500 501 struct scatterlist *t_data_sg; 502 struct scatterlist *t_data_sg_orig; 503 unsigned int t_data_nents; 504 unsigned int t_data_nents_orig; 505 void *t_data_vmap; 506 struct scatterlist *t_bidi_data_sg; 507 unsigned int t_bidi_data_nents; 508 509 /* Used for lun->lun_ref counting */ 510 int lun_ref_active; 511 512 struct list_head state_list; 513 514 /* backend private data */ 515 void *priv; 516 517 /* DIF related members */ 518 enum target_prot_op prot_op; 519 enum target_prot_type prot_type; 520 u8 prot_checks; 521 bool prot_pto; 522 u32 prot_length; 523 u32 reftag_seed; 524 struct scatterlist *t_prot_sg; 525 unsigned int t_prot_nents; 526 sense_reason_t pi_err; 527 sector_t bad_sector; 528 int cpuid; 529 }; 530 531 struct se_ua { 532 u8 ua_asc; 533 u8 ua_ascq; 534 struct list_head ua_nacl_list; 535 }; 536 537 struct se_node_acl { 538 char initiatorname[TRANSPORT_IQN_LEN]; 539 /* Used to signal demo mode created ACL, disabled by default */ 540 bool dynamic_node_acl; 541 u32 queue_depth; 542 u32 acl_index; 543 enum target_prot_type saved_prot_type; 544 #define MAX_ACL_TAG_SIZE 64 545 char acl_tag[MAX_ACL_TAG_SIZE]; 546 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 547 atomic_t acl_pr_ref_count; 548 struct hlist_head lun_entry_hlist; 549 struct se_session *nacl_sess; 550 struct se_portal_group *se_tpg; 551 struct mutex lun_entry_mutex; 552 spinlock_t nacl_sess_lock; 553 struct config_group acl_group; 554 struct config_group acl_attrib_group; 555 struct config_group acl_auth_group; 556 struct config_group acl_param_group; 557 struct config_group acl_fabric_stat_group; 558 struct list_head acl_list; 559 struct list_head acl_sess_list; 560 struct completion acl_free_comp; 561 struct kref acl_kref; 562 }; 563 564 static inline struct se_node_acl *acl_to_nacl(struct config_item *item) 565 { 566 return container_of(to_config_group(item), struct se_node_acl, 567 acl_group); 568 } 569 570 static inline struct se_node_acl *attrib_to_nacl(struct config_item *item) 571 { 572 return container_of(to_config_group(item), struct se_node_acl, 573 acl_attrib_group); 574 } 575 576 static inline struct se_node_acl *auth_to_nacl(struct config_item *item) 577 { 578 return container_of(to_config_group(item), struct se_node_acl, 579 acl_auth_group); 580 } 581 582 static inline struct se_node_acl *param_to_nacl(struct config_item *item) 583 { 584 return container_of(to_config_group(item), struct se_node_acl, 585 acl_param_group); 586 } 587 588 static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) 589 { 590 return container_of(to_config_group(item), struct se_node_acl, 591 acl_fabric_stat_group); 592 } 593 594 struct se_session { 595 unsigned sess_tearing_down:1; 596 u64 sess_bin_isid; 597 enum target_prot_op sup_prot_ops; 598 enum target_prot_type sess_prot_type; 599 struct se_node_acl *se_node_acl; 600 struct se_portal_group *se_tpg; 601 void *fabric_sess_ptr; 602 struct list_head sess_list; 603 struct list_head sess_acl_list; 604 struct list_head sess_cmd_list; 605 struct list_head sess_wait_list; 606 spinlock_t sess_cmd_lock; 607 void *sess_cmd_map; 608 struct percpu_ida sess_tag_pool; 609 }; 610 611 struct se_device; 612 struct se_transform_info; 613 struct scatterlist; 614 615 struct se_ml_stat_grps { 616 struct config_group stat_group; 617 struct config_group scsi_auth_intr_group; 618 struct config_group scsi_att_intr_port_group; 619 }; 620 621 struct se_lun_acl { 622 u64 mapped_lun; 623 struct se_node_acl *se_lun_nacl; 624 struct se_lun *se_lun; 625 struct config_group se_lun_group; 626 struct se_ml_stat_grps ml_stat_grps; 627 }; 628 629 struct se_dev_entry { 630 u64 mapped_lun; 631 u64 pr_res_key; 632 u64 creation_time; 633 bool lun_access_ro; 634 u32 attach_count; 635 atomic_long_t total_cmds; 636 atomic_long_t read_bytes; 637 atomic_long_t write_bytes; 638 atomic_t ua_count; 639 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 640 struct kref pr_kref; 641 struct completion pr_comp; 642 struct se_lun_acl __rcu *se_lun_acl; 643 spinlock_t ua_lock; 644 struct se_lun __rcu *se_lun; 645 #define DEF_PR_REG_ACTIVE 1 646 unsigned long deve_flags; 647 struct list_head alua_port_list; 648 struct list_head lun_link; 649 struct list_head ua_list; 650 struct hlist_node link; 651 struct rcu_head rcu_head; 652 }; 653 654 struct se_dev_attrib { 655 int emulate_model_alias; 656 int emulate_dpo; 657 int emulate_fua_write; 658 int emulate_fua_read; 659 int emulate_write_cache; 660 int emulate_ua_intlck_ctrl; 661 int emulate_tas; 662 int emulate_tpu; 663 int emulate_tpws; 664 int emulate_caw; 665 int emulate_3pc; 666 int pi_prot_format; 667 enum target_prot_type pi_prot_type; 668 enum target_prot_type hw_pi_prot_type; 669 int enforce_pr_isids; 670 int force_pr_aptpl; 671 int is_nonrot; 672 int emulate_rest_reord; 673 int unmap_zeroes_data; 674 u32 hw_block_size; 675 u32 block_size; 676 u32 hw_max_sectors; 677 u32 optimal_sectors; 678 u32 hw_queue_depth; 679 u32 queue_depth; 680 u32 max_unmap_lba_count; 681 u32 max_unmap_block_desc_count; 682 u32 unmap_granularity; 683 u32 unmap_granularity_alignment; 684 u32 max_write_same_len; 685 u32 max_bytes_per_io; 686 struct se_device *da_dev; 687 struct config_group da_group; 688 }; 689 690 struct se_port_stat_grps { 691 struct config_group stat_group; 692 struct config_group scsi_port_group; 693 struct config_group scsi_tgt_port_group; 694 struct config_group scsi_transport_group; 695 }; 696 697 struct scsi_port_stats { 698 atomic_long_t cmd_pdus; 699 atomic_long_t tx_data_octets; 700 atomic_long_t rx_data_octets; 701 }; 702 703 struct se_lun { 704 u64 unpacked_lun; 705 #define SE_LUN_LINK_MAGIC 0xffff7771 706 u32 lun_link_magic; 707 bool lun_access_ro; 708 u32 lun_index; 709 710 /* RELATIVE TARGET PORT IDENTIFER */ 711 u16 lun_rtpi; 712 atomic_t lun_acl_count; 713 struct se_device __rcu *lun_se_dev; 714 715 struct list_head lun_deve_list; 716 spinlock_t lun_deve_lock; 717 718 /* ALUA state */ 719 int lun_tg_pt_secondary_stat; 720 int lun_tg_pt_secondary_write_md; 721 atomic_t lun_tg_pt_secondary_offline; 722 struct mutex lun_tg_pt_md_mutex; 723 724 /* ALUA target port group linkage */ 725 struct list_head lun_tg_pt_gp_link; 726 struct t10_alua_tg_pt_gp *lun_tg_pt_gp; 727 spinlock_t lun_tg_pt_gp_lock; 728 729 struct se_portal_group *lun_tpg; 730 struct scsi_port_stats lun_stats; 731 struct config_group lun_group; 732 struct se_port_stat_grps port_stat_grps; 733 struct completion lun_ref_comp; 734 struct percpu_ref lun_ref; 735 struct list_head lun_dev_link; 736 struct hlist_node link; 737 struct rcu_head rcu_head; 738 }; 739 740 struct se_dev_stat_grps { 741 struct config_group stat_group; 742 struct config_group scsi_dev_group; 743 struct config_group scsi_tgt_dev_group; 744 struct config_group scsi_lu_group; 745 }; 746 747 struct se_device { 748 #define SE_DEV_LINK_MAGIC 0xfeeddeef 749 u32 dev_link_magic; 750 /* RELATIVE TARGET PORT IDENTIFER Counter */ 751 u16 dev_rpti_counter; 752 /* Used for SAM Task Attribute ordering */ 753 u32 dev_cur_ordered_id; 754 u32 dev_flags; 755 #define DF_CONFIGURED 0x00000001 756 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 757 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 758 #define DF_USING_UDEV_PATH 0x00000008 759 #define DF_USING_ALIAS 0x00000010 760 #define DF_READ_ONLY 0x00000020 761 /* Physical device queue depth */ 762 u32 queue_depth; 763 /* Used for SPC-2 reservations enforce of ISIDs */ 764 u64 dev_res_bin_isid; 765 /* Pointer to transport specific device structure */ 766 u32 dev_index; 767 u64 creation_time; 768 atomic_long_t num_resets; 769 atomic_long_t num_cmds; 770 atomic_long_t read_bytes; 771 atomic_long_t write_bytes; 772 /* Active commands on this virtual SE device */ 773 atomic_t simple_cmds; 774 atomic_t dev_ordered_sync; 775 atomic_t dev_qf_count; 776 u32 export_count; 777 spinlock_t delayed_cmd_lock; 778 spinlock_t execute_task_lock; 779 spinlock_t dev_reservation_lock; 780 unsigned int dev_reservation_flags; 781 #define DRF_SPC2_RESERVATIONS 0x00000001 782 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 783 spinlock_t se_port_lock; 784 spinlock_t se_tmr_lock; 785 spinlock_t qf_cmd_lock; 786 struct semaphore caw_sem; 787 /* Used for legacy SPC-2 reservationsa */ 788 struct se_node_acl *dev_reserved_node_acl; 789 /* Used for ALUA Logical Unit Group membership */ 790 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 791 /* Used for SPC-3 Persistent Reservations */ 792 struct t10_pr_registration *dev_pr_res_holder; 793 struct list_head dev_sep_list; 794 struct list_head dev_tmr_list; 795 struct workqueue_struct *tmr_wq; 796 struct work_struct qf_work_queue; 797 struct list_head delayed_cmd_list; 798 struct list_head state_list; 799 struct list_head qf_cmd_list; 800 struct list_head g_dev_node; 801 /* Pointer to associated SE HBA */ 802 struct se_hba *se_hba; 803 /* T10 Inquiry and VPD WWN Information */ 804 struct t10_wwn t10_wwn; 805 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 806 struct t10_alua t10_alua; 807 /* T10 SPC-2 + SPC-3 Reservations */ 808 struct t10_reservation t10_pr; 809 struct se_dev_attrib dev_attrib; 810 struct config_group dev_group; 811 struct config_group dev_pr_group; 812 struct se_dev_stat_grps dev_stat_grps; 813 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 814 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 815 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 816 unsigned char udev_path[SE_UDEV_PATH_LEN]; 817 /* Pointer to template of function pointers for transport */ 818 const struct target_backend_ops *transport; 819 /* Linked list for struct se_hba struct se_device list */ 820 struct list_head dev_list; 821 struct se_lun xcopy_lun; 822 /* Protection Information */ 823 int prot_length; 824 /* For se_lun->lun_se_dev RCU read-side critical access */ 825 u32 hba_index; 826 struct rcu_head rcu_head; 827 }; 828 829 struct se_hba { 830 u16 hba_tpgt; 831 u32 hba_id; 832 /* See hba_flags_table */ 833 u32 hba_flags; 834 /* Virtual iSCSI devices attached. */ 835 u32 dev_count; 836 u32 hba_index; 837 /* Pointer to transport specific host structure. */ 838 void *hba_ptr; 839 struct list_head hba_node; 840 spinlock_t device_lock; 841 struct config_group hba_group; 842 struct mutex hba_access_mutex; 843 struct target_backend *backend; 844 }; 845 846 struct se_tpg_np { 847 struct se_portal_group *tpg_np_parent; 848 struct config_group tpg_np_group; 849 }; 850 851 static inline struct se_tpg_np *to_tpg_np(struct config_item *item) 852 { 853 return container_of(to_config_group(item), struct se_tpg_np, 854 tpg_np_group); 855 } 856 857 struct se_portal_group { 858 /* 859 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. 860 * 861 * Negative values can be used by fabric drivers for internal use TPGs. 862 */ 863 int proto_id; 864 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 865 atomic_t tpg_pr_ref_count; 866 /* Spinlock for adding/removing ACLed Nodes */ 867 struct mutex acl_node_mutex; 868 /* Spinlock for adding/removing sessions */ 869 spinlock_t session_lock; 870 struct mutex tpg_lun_mutex; 871 struct list_head se_tpg_node; 872 /* linked list for initiator ACL list */ 873 struct list_head acl_node_list; 874 struct hlist_head tpg_lun_hlist; 875 struct se_lun *tpg_virt_lun0; 876 /* List of TCM sessions associated wth this TPG */ 877 struct list_head tpg_sess_list; 878 /* Pointer to $FABRIC_MOD dependent code */ 879 const struct target_core_fabric_ops *se_tpg_tfo; 880 struct se_wwn *se_tpg_wwn; 881 struct config_group tpg_group; 882 struct config_group tpg_lun_group; 883 struct config_group tpg_np_group; 884 struct config_group tpg_acl_group; 885 struct config_group tpg_attrib_group; 886 struct config_group tpg_auth_group; 887 struct config_group tpg_param_group; 888 }; 889 890 static inline struct se_portal_group *to_tpg(struct config_item *item) 891 { 892 return container_of(to_config_group(item), struct se_portal_group, 893 tpg_group); 894 } 895 896 static inline struct se_portal_group *attrib_to_tpg(struct config_item *item) 897 { 898 return container_of(to_config_group(item), struct se_portal_group, 899 tpg_attrib_group); 900 } 901 902 static inline struct se_portal_group *auth_to_tpg(struct config_item *item) 903 { 904 return container_of(to_config_group(item), struct se_portal_group, 905 tpg_auth_group); 906 } 907 908 static inline struct se_portal_group *param_to_tpg(struct config_item *item) 909 { 910 return container_of(to_config_group(item), struct se_portal_group, 911 tpg_param_group); 912 } 913 914 struct se_wwn { 915 struct target_fabric_configfs *wwn_tf; 916 struct config_group wwn_group; 917 struct config_group fabric_stat_group; 918 }; 919 920 static inline void atomic_inc_mb(atomic_t *v) 921 { 922 smp_mb__before_atomic(); 923 atomic_inc(v); 924 smp_mb__after_atomic(); 925 } 926 927 static inline void atomic_dec_mb(atomic_t *v) 928 { 929 smp_mb__before_atomic(); 930 atomic_dec(v); 931 smp_mb__after_atomic(); 932 } 933 934 #endif /* TARGET_CORE_BASE_H */ 935