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 }; 144 145 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 146 enum transport_lunflags_table { 147 TRANSPORT_LUNFLAGS_READ_ONLY = 0x01, 148 TRANSPORT_LUNFLAGS_READ_WRITE = 0x02, 149 }; 150 151 /* 152 * Used by transport_send_check_condition_and_sense() 153 * to signal which ASC/ASCQ sense payload should be built. 154 */ 155 typedef unsigned __bitwise__ sense_reason_t; 156 157 enum tcm_sense_reason_table { 158 #define R(x) (__force sense_reason_t )(x) 159 TCM_NO_SENSE = R(0x00), 160 TCM_NON_EXISTENT_LUN = R(0x01), 161 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 162 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 163 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 164 TCM_SERVICE_CRC_ERROR = R(0x05), 165 TCM_SNACK_REJECTED = R(0x06), 166 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 167 TCM_INVALID_CDB_FIELD = R(0x08), 168 TCM_INVALID_PARAMETER_LIST = R(0x09), 169 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 170 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 171 TCM_WRITE_PROTECTED = R(0x0c), 172 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 173 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 174 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 175 TCM_RESERVATION_CONFLICT = R(0x10), 176 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 177 TCM_OUT_OF_RESOURCES = R(0x12), 178 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), 179 TCM_MISCOMPARE_VERIFY = R(0x14), 180 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), 181 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), 182 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), 183 #undef R 184 }; 185 186 enum target_sc_flags_table { 187 TARGET_SCF_BIDI_OP = 0x01, 188 TARGET_SCF_ACK_KREF = 0x02, 189 TARGET_SCF_UNKNOWN_SIZE = 0x04, 190 }; 191 192 /* fabric independent task management function values */ 193 enum tcm_tmreq_table { 194 TMR_ABORT_TASK = 1, 195 TMR_ABORT_TASK_SET = 2, 196 TMR_CLEAR_ACA = 3, 197 TMR_CLEAR_TASK_SET = 4, 198 TMR_LUN_RESET = 5, 199 TMR_TARGET_WARM_RESET = 6, 200 TMR_TARGET_COLD_RESET = 7, 201 }; 202 203 /* fabric independent task management response values */ 204 enum tcm_tmrsp_table { 205 TMR_FUNCTION_FAILED = 0, 206 TMR_FUNCTION_COMPLETE = 1, 207 TMR_TASK_DOES_NOT_EXIST = 2, 208 TMR_LUN_DOES_NOT_EXIST = 3, 209 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, 210 TMR_FUNCTION_REJECTED = 5, 211 }; 212 213 /* 214 * Used for target SCSI statistics 215 */ 216 typedef enum { 217 SCSI_INST_INDEX, 218 SCSI_DEVICE_INDEX, 219 SCSI_AUTH_INTR_INDEX, 220 SCSI_INDEX_TYPE_MAX 221 } scsi_index_t; 222 223 struct se_cmd; 224 225 struct t10_alua_lba_map_member { 226 struct list_head lba_map_mem_list; 227 int lba_map_mem_alua_state; 228 int lba_map_mem_alua_pg_id; 229 }; 230 231 struct t10_alua_lba_map { 232 u64 lba_map_first_lba; 233 u64 lba_map_last_lba; 234 struct list_head lba_map_list; 235 struct list_head lba_map_mem_list; 236 }; 237 238 struct t10_alua { 239 /* ALUA Target Port Group ID */ 240 u16 alua_tg_pt_gps_counter; 241 u32 alua_tg_pt_gps_count; 242 /* Referrals support */ 243 spinlock_t lba_map_lock; 244 u32 lba_map_segment_size; 245 u32 lba_map_segment_multiplier; 246 struct list_head lba_map_list; 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_supported_states; 280 int tg_pt_gp_alua_pending_state; 281 int tg_pt_gp_alua_previous_state; 282 int tg_pt_gp_alua_access_status; 283 int tg_pt_gp_alua_access_type; 284 int tg_pt_gp_nonop_delay_msecs; 285 int tg_pt_gp_trans_delay_msecs; 286 int tg_pt_gp_implicit_trans_secs; 287 int tg_pt_gp_pref; 288 int tg_pt_gp_write_metadata; 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_lun_list; 298 struct se_lun *tg_pt_gp_alua_lun; 299 struct se_node_acl *tg_pt_gp_alua_nacl; 300 struct delayed_work tg_pt_gp_transition_work; 301 struct completion *tg_pt_gp_transition_complete; 302 }; 303 304 struct t10_vpd { 305 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; 306 int protocol_identifier_set; 307 u32 protocol_identifier; 308 u32 device_identifier_code_set; 309 u32 association; 310 u32 device_identifier_type; 311 struct list_head vpd_list; 312 }; 313 314 struct t10_wwn { 315 char vendor[8]; 316 char model[16]; 317 char revision[4]; 318 char unit_serial[INQUIRY_VPD_SERIAL_LEN]; 319 spinlock_t t10_vpd_lock; 320 struct se_device *t10_dev; 321 struct config_group t10_wwn_group; 322 struct list_head t10_vpd_list; 323 }; 324 325 struct t10_pr_registration { 326 /* Used for fabrics that contain WWN+ISID */ 327 #define PR_REG_ISID_LEN 16 328 /* PR_REG_ISID_LEN + ',i,0x' */ 329 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) 330 char pr_reg_isid[PR_REG_ISID_LEN]; 331 /* Used during APTPL metadata reading */ 332 #define PR_APTPL_MAX_IPORT_LEN 256 333 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; 334 /* Used during APTPL metadata reading */ 335 #define PR_APTPL_MAX_TPORT_LEN 256 336 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; 337 u16 pr_aptpl_rpti; 338 u16 pr_reg_tpgt; 339 /* Reservation effects all target ports */ 340 int pr_reg_all_tg_pt; 341 /* Activate Persistence across Target Power Loss */ 342 int pr_reg_aptpl; 343 int pr_res_holder; 344 int pr_res_type; 345 int pr_res_scope; 346 /* Used for fabric initiator WWPNs using a ISID */ 347 bool isid_present_at_reg; 348 u64 pr_res_mapped_lun; 349 u64 pr_aptpl_target_lun; 350 u16 tg_pt_sep_rtpi; 351 u32 pr_res_generation; 352 u64 pr_reg_bin_isid; 353 u64 pr_res_key; 354 atomic_t pr_res_holders; 355 struct se_node_acl *pr_reg_nacl; 356 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ 357 struct se_dev_entry *pr_reg_deve; 358 struct list_head pr_reg_list; 359 struct list_head pr_reg_abort_list; 360 struct list_head pr_reg_aptpl_list; 361 struct list_head pr_reg_atp_list; 362 struct list_head pr_reg_atp_mem_list; 363 }; 364 365 struct t10_reservation { 366 /* Reservation effects all target ports */ 367 int pr_all_tg_pt; 368 /* Activate Persistence across Target Power Loss enabled 369 * for SCSI device */ 370 int pr_aptpl_active; 371 #define PR_APTPL_BUF_LEN 262144 372 u32 pr_generation; 373 spinlock_t registration_lock; 374 spinlock_t aptpl_reg_lock; 375 /* 376 * This will always be set by one individual I_T Nexus. 377 * However with all_tg_pt=1, other I_T Nexus from the 378 * same initiator can access PR reg/res info on a different 379 * target port. 380 * 381 * There is also the 'All Registrants' case, where there is 382 * a single *pr_res_holder of the reservation, but all 383 * registrations are considered reservation holders. 384 */ 385 struct se_node_acl *pr_res_holder; 386 struct list_head registration_list; 387 struct list_head aptpl_reg_list; 388 }; 389 390 struct se_tmr_req { 391 /* Task Management function to be performed */ 392 u8 function; 393 /* Task Management response to send */ 394 u8 response; 395 int call_transport; 396 /* Reference to ITT that Task Mgmt should be performed */ 397 u64 ref_task_tag; 398 void *fabric_tmr_ptr; 399 struct se_cmd *task_cmd; 400 struct se_device *tmr_dev; 401 struct se_lun *tmr_lun; 402 struct list_head tmr_list; 403 }; 404 405 enum target_prot_op { 406 TARGET_PROT_NORMAL = 0, 407 TARGET_PROT_DIN_INSERT = (1 << 0), 408 TARGET_PROT_DOUT_INSERT = (1 << 1), 409 TARGET_PROT_DIN_STRIP = (1 << 2), 410 TARGET_PROT_DOUT_STRIP = (1 << 3), 411 TARGET_PROT_DIN_PASS = (1 << 4), 412 TARGET_PROT_DOUT_PASS = (1 << 5), 413 }; 414 415 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ 416 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ 417 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS 418 419 enum target_prot_type { 420 TARGET_DIF_TYPE0_PROT, 421 TARGET_DIF_TYPE1_PROT, 422 TARGET_DIF_TYPE2_PROT, 423 TARGET_DIF_TYPE3_PROT, 424 }; 425 426 enum target_core_dif_check { 427 TARGET_DIF_CHECK_GUARD = 0x1 << 0, 428 TARGET_DIF_CHECK_APPTAG = 0x1 << 1, 429 TARGET_DIF_CHECK_REFTAG = 0x1 << 2, 430 }; 431 432 /* for sam_task_attr */ 433 #define TCM_SIMPLE_TAG 0x20 434 #define TCM_HEAD_TAG 0x21 435 #define TCM_ORDERED_TAG 0x22 436 #define TCM_ACA_TAG 0x24 437 438 struct se_cmd { 439 /* SAM response code being sent to initiator */ 440 u8 scsi_status; 441 u8 scsi_asc; 442 u8 scsi_ascq; 443 u16 scsi_sense_length; 444 unsigned cmd_wait_set:1; 445 unsigned unknown_data_length:1; 446 bool state_active:1; 447 u64 tag; /* SAM command identifier aka task tag */ 448 /* Delay for ALUA Active/NonOptimized state access in milliseconds */ 449 int alua_nonop_delay; 450 /* See include/linux/dma-mapping.h */ 451 enum dma_data_direction data_direction; 452 /* For SAM Task Attribute */ 453 int sam_task_attr; 454 /* Used for se_sess->sess_tag_pool */ 455 unsigned int map_tag; 456 /* Transport protocol dependent state, see transport_state_table */ 457 enum transport_state_table t_state; 458 /* See se_cmd_flags_table */ 459 u32 se_cmd_flags; 460 /* Total size in bytes associated with command */ 461 u32 data_length; 462 u32 residual_count; 463 u64 orig_fe_lun; 464 /* Persistent Reservation key */ 465 u64 pr_res_key; 466 /* Used for sense data */ 467 void *sense_buffer; 468 struct list_head se_delayed_node; 469 struct list_head se_qf_node; 470 struct se_device *se_dev; 471 struct se_lun *se_lun; 472 /* Only used for internal passthrough and legacy TCM fabric modules */ 473 struct se_session *se_sess; 474 struct se_tmr_req *se_tmr_req; 475 struct list_head se_cmd_list; 476 struct completion cmd_wait_comp; 477 const struct target_core_fabric_ops *se_tfo; 478 sense_reason_t (*execute_cmd)(struct se_cmd *); 479 sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *); 480 void *protocol_data; 481 482 unsigned char *t_task_cdb; 483 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; 484 unsigned long long t_task_lba; 485 unsigned int t_task_nolb; 486 unsigned int transport_state; 487 #define CMD_T_ABORTED (1 << 0) 488 #define CMD_T_ACTIVE (1 << 1) 489 #define CMD_T_COMPLETE (1 << 2) 490 #define CMD_T_SENT (1 << 4) 491 #define CMD_T_STOP (1 << 5) 492 #define CMD_T_DEV_ACTIVE (1 << 7) 493 #define CMD_T_REQUEST_STOP (1 << 8) 494 #define CMD_T_BUSY (1 << 9) 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 /* old task stop completion, consider merging with some of the above */ 515 struct completion task_stop_comp; 516 517 /* backend private data */ 518 void *priv; 519 520 /* DIF related members */ 521 enum target_prot_op prot_op; 522 enum target_prot_type prot_type; 523 u8 prot_checks; 524 bool prot_pto; 525 u32 prot_length; 526 u32 reftag_seed; 527 struct scatterlist *t_prot_sg; 528 unsigned int t_prot_nents; 529 sense_reason_t pi_err; 530 sector_t bad_sector; 531 int cpuid; 532 }; 533 534 struct se_ua { 535 u8 ua_asc; 536 u8 ua_ascq; 537 struct list_head ua_nacl_list; 538 }; 539 540 struct se_node_acl { 541 char initiatorname[TRANSPORT_IQN_LEN]; 542 /* Used to signal demo mode created ACL, disabled by default */ 543 bool dynamic_node_acl; 544 bool acl_stop:1; 545 u32 queue_depth; 546 u32 acl_index; 547 enum target_prot_type saved_prot_type; 548 #define MAX_ACL_TAG_SIZE 64 549 char acl_tag[MAX_ACL_TAG_SIZE]; 550 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 551 atomic_t acl_pr_ref_count; 552 struct hlist_head lun_entry_hlist; 553 struct se_session *nacl_sess; 554 struct se_portal_group *se_tpg; 555 struct mutex lun_entry_mutex; 556 spinlock_t nacl_sess_lock; 557 struct config_group acl_group; 558 struct config_group acl_attrib_group; 559 struct config_group acl_auth_group; 560 struct config_group acl_param_group; 561 struct config_group acl_fabric_stat_group; 562 struct config_group *acl_default_groups[5]; 563 struct list_head acl_list; 564 struct list_head acl_sess_list; 565 struct completion acl_free_comp; 566 struct kref acl_kref; 567 }; 568 569 static inline struct se_node_acl *acl_to_nacl(struct config_item *item) 570 { 571 return container_of(to_config_group(item), struct se_node_acl, 572 acl_group); 573 } 574 575 static inline struct se_node_acl *attrib_to_nacl(struct config_item *item) 576 { 577 return container_of(to_config_group(item), struct se_node_acl, 578 acl_attrib_group); 579 } 580 581 static inline struct se_node_acl *auth_to_nacl(struct config_item *item) 582 { 583 return container_of(to_config_group(item), struct se_node_acl, 584 acl_auth_group); 585 } 586 587 static inline struct se_node_acl *param_to_nacl(struct config_item *item) 588 { 589 return container_of(to_config_group(item), struct se_node_acl, 590 acl_param_group); 591 } 592 593 static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) 594 { 595 return container_of(to_config_group(item), struct se_node_acl, 596 acl_fabric_stat_group); 597 } 598 599 struct se_session { 600 unsigned sess_tearing_down:1; 601 u64 sess_bin_isid; 602 enum target_prot_op sup_prot_ops; 603 enum target_prot_type sess_prot_type; 604 struct se_node_acl *se_node_acl; 605 struct se_portal_group *se_tpg; 606 void *fabric_sess_ptr; 607 struct list_head sess_list; 608 struct list_head sess_acl_list; 609 struct list_head sess_cmd_list; 610 struct list_head sess_wait_list; 611 spinlock_t sess_cmd_lock; 612 struct kref sess_kref; 613 void *sess_cmd_map; 614 struct percpu_ida sess_tag_pool; 615 }; 616 617 struct se_device; 618 struct se_transform_info; 619 struct scatterlist; 620 621 struct se_ml_stat_grps { 622 struct config_group stat_group; 623 struct config_group scsi_auth_intr_group; 624 struct config_group scsi_att_intr_port_group; 625 }; 626 627 struct se_lun_acl { 628 u64 mapped_lun; 629 struct se_node_acl *se_lun_nacl; 630 struct se_lun *se_lun; 631 struct config_group se_lun_group; 632 struct se_ml_stat_grps ml_stat_grps; 633 }; 634 635 struct se_dev_entry { 636 /* See transport_lunflags_table */ 637 u64 mapped_lun; 638 u64 pr_res_key; 639 u64 creation_time; 640 u32 lun_flags; 641 u32 attach_count; 642 atomic_long_t total_cmds; 643 atomic_long_t read_bytes; 644 atomic_long_t write_bytes; 645 atomic_t ua_count; 646 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 647 struct kref pr_kref; 648 struct completion pr_comp; 649 struct se_lun_acl __rcu *se_lun_acl; 650 spinlock_t ua_lock; 651 struct se_lun __rcu *se_lun; 652 #define DEF_PR_REG_ACTIVE 1 653 unsigned long deve_flags; 654 struct list_head alua_port_list; 655 struct list_head lun_link; 656 struct list_head ua_list; 657 struct hlist_node link; 658 struct rcu_head rcu_head; 659 }; 660 661 struct se_dev_attrib { 662 int emulate_model_alias; 663 int emulate_dpo; 664 int emulate_fua_write; 665 int emulate_fua_read; 666 int emulate_write_cache; 667 int emulate_ua_intlck_ctrl; 668 int emulate_tas; 669 int emulate_tpu; 670 int emulate_tpws; 671 int emulate_caw; 672 int emulate_3pc; 673 int pi_prot_format; 674 enum target_prot_type pi_prot_type; 675 enum target_prot_type hw_pi_prot_type; 676 int enforce_pr_isids; 677 int force_pr_aptpl; 678 int is_nonrot; 679 int emulate_rest_reord; 680 int unmap_zeroes_data; 681 u32 hw_block_size; 682 u32 block_size; 683 u32 hw_max_sectors; 684 u32 optimal_sectors; 685 u32 hw_queue_depth; 686 u32 queue_depth; 687 u32 max_unmap_lba_count; 688 u32 max_unmap_block_desc_count; 689 u32 unmap_granularity; 690 u32 unmap_granularity_alignment; 691 u32 max_write_same_len; 692 u32 max_bytes_per_io; 693 struct se_device *da_dev; 694 struct config_group da_group; 695 }; 696 697 struct se_port_stat_grps { 698 struct config_group stat_group; 699 struct config_group scsi_port_group; 700 struct config_group scsi_tgt_port_group; 701 struct config_group scsi_transport_group; 702 }; 703 704 struct scsi_port_stats { 705 atomic_long_t cmd_pdus; 706 atomic_long_t tx_data_octets; 707 atomic_long_t rx_data_octets; 708 }; 709 710 struct se_lun { 711 u64 unpacked_lun; 712 #define SE_LUN_LINK_MAGIC 0xffff7771 713 u32 lun_link_magic; 714 u32 lun_access; 715 u32 lun_index; 716 717 /* RELATIVE TARGET PORT IDENTIFER */ 718 u16 lun_rtpi; 719 atomic_t lun_acl_count; 720 struct se_device __rcu *lun_se_dev; 721 722 struct list_head lun_deve_list; 723 spinlock_t lun_deve_lock; 724 725 /* ALUA state */ 726 int lun_tg_pt_secondary_stat; 727 int lun_tg_pt_secondary_write_md; 728 atomic_t lun_tg_pt_secondary_offline; 729 struct mutex lun_tg_pt_md_mutex; 730 731 /* ALUA target port group linkage */ 732 struct list_head lun_tg_pt_gp_link; 733 struct t10_alua_tg_pt_gp *lun_tg_pt_gp; 734 spinlock_t lun_tg_pt_gp_lock; 735 736 struct se_portal_group *lun_tpg; 737 struct scsi_port_stats lun_stats; 738 struct config_group lun_group; 739 struct se_port_stat_grps port_stat_grps; 740 struct completion lun_ref_comp; 741 struct percpu_ref lun_ref; 742 struct list_head lun_dev_link; 743 struct hlist_node link; 744 struct rcu_head rcu_head; 745 }; 746 747 struct se_dev_stat_grps { 748 struct config_group stat_group; 749 struct config_group scsi_dev_group; 750 struct config_group scsi_tgt_dev_group; 751 struct config_group scsi_lu_group; 752 }; 753 754 struct se_device { 755 #define SE_DEV_LINK_MAGIC 0xfeeddeef 756 u32 dev_link_magic; 757 /* RELATIVE TARGET PORT IDENTIFER Counter */ 758 u16 dev_rpti_counter; 759 /* Used for SAM Task Attribute ordering */ 760 u32 dev_cur_ordered_id; 761 u32 dev_flags; 762 #define DF_CONFIGURED 0x00000001 763 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 764 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 765 #define DF_USING_UDEV_PATH 0x00000008 766 #define DF_USING_ALIAS 0x00000010 767 #define DF_READ_ONLY 0x00000020 768 /* Physical device queue depth */ 769 u32 queue_depth; 770 /* Used for SPC-2 reservations enforce of ISIDs */ 771 u64 dev_res_bin_isid; 772 /* Pointer to transport specific device structure */ 773 u32 dev_index; 774 u64 creation_time; 775 atomic_long_t num_resets; 776 atomic_long_t num_cmds; 777 atomic_long_t read_bytes; 778 atomic_long_t write_bytes; 779 /* Active commands on this virtual SE device */ 780 atomic_t simple_cmds; 781 atomic_t dev_ordered_sync; 782 atomic_t dev_qf_count; 783 u32 export_count; 784 spinlock_t delayed_cmd_lock; 785 spinlock_t execute_task_lock; 786 spinlock_t dev_reservation_lock; 787 unsigned int dev_reservation_flags; 788 #define DRF_SPC2_RESERVATIONS 0x00000001 789 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 790 spinlock_t se_port_lock; 791 spinlock_t se_tmr_lock; 792 spinlock_t qf_cmd_lock; 793 struct semaphore caw_sem; 794 /* Used for legacy SPC-2 reservationsa */ 795 struct se_node_acl *dev_reserved_node_acl; 796 /* Used for ALUA Logical Unit Group membership */ 797 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 798 /* Used for SPC-3 Persistent Reservations */ 799 struct t10_pr_registration *dev_pr_res_holder; 800 struct list_head dev_sep_list; 801 struct list_head dev_tmr_list; 802 struct workqueue_struct *tmr_wq; 803 struct work_struct qf_work_queue; 804 struct list_head delayed_cmd_list; 805 struct list_head state_list; 806 struct list_head qf_cmd_list; 807 struct list_head g_dev_node; 808 /* Pointer to associated SE HBA */ 809 struct se_hba *se_hba; 810 /* T10 Inquiry and VPD WWN Information */ 811 struct t10_wwn t10_wwn; 812 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 813 struct t10_alua t10_alua; 814 /* T10 SPC-2 + SPC-3 Reservations */ 815 struct t10_reservation t10_pr; 816 struct se_dev_attrib dev_attrib; 817 struct config_group dev_group; 818 struct config_group dev_pr_group; 819 struct se_dev_stat_grps dev_stat_grps; 820 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 821 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 822 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 823 unsigned char udev_path[SE_UDEV_PATH_LEN]; 824 /* Pointer to template of function pointers for transport */ 825 const struct target_backend_ops *transport; 826 /* Linked list for struct se_hba struct se_device list */ 827 struct list_head dev_list; 828 struct se_lun xcopy_lun; 829 /* Protection Information */ 830 int prot_length; 831 /* For se_lun->lun_se_dev RCU read-side critical access */ 832 u32 hba_index; 833 struct rcu_head rcu_head; 834 }; 835 836 struct se_hba { 837 u16 hba_tpgt; 838 u32 hba_id; 839 /* See hba_flags_table */ 840 u32 hba_flags; 841 /* Virtual iSCSI devices attached. */ 842 u32 dev_count; 843 u32 hba_index; 844 /* Pointer to transport specific host structure. */ 845 void *hba_ptr; 846 struct list_head hba_node; 847 spinlock_t device_lock; 848 struct config_group hba_group; 849 struct mutex hba_access_mutex; 850 struct target_backend *backend; 851 }; 852 853 struct se_tpg_np { 854 struct se_portal_group *tpg_np_parent; 855 struct config_group tpg_np_group; 856 }; 857 858 static inline struct se_tpg_np *to_tpg_np(struct config_item *item) 859 { 860 return container_of(to_config_group(item), struct se_tpg_np, 861 tpg_np_group); 862 } 863 864 struct se_portal_group { 865 /* 866 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. 867 * 868 * Negative values can be used by fabric drivers for internal use TPGs. 869 */ 870 int proto_id; 871 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ 872 atomic_t tpg_pr_ref_count; 873 /* Spinlock for adding/removing ACLed Nodes */ 874 struct mutex acl_node_mutex; 875 /* Spinlock for adding/removing sessions */ 876 spinlock_t session_lock; 877 struct mutex tpg_lun_mutex; 878 struct list_head se_tpg_node; 879 /* linked list for initiator ACL list */ 880 struct list_head acl_node_list; 881 struct hlist_head tpg_lun_hlist; 882 struct se_lun *tpg_virt_lun0; 883 /* List of TCM sessions associated wth this TPG */ 884 struct list_head tpg_sess_list; 885 /* Pointer to $FABRIC_MOD dependent code */ 886 const struct target_core_fabric_ops *se_tpg_tfo; 887 struct se_wwn *se_tpg_wwn; 888 struct config_group tpg_group; 889 struct config_group *tpg_default_groups[7]; 890 struct config_group tpg_lun_group; 891 struct config_group tpg_np_group; 892 struct config_group tpg_acl_group; 893 struct config_group tpg_attrib_group; 894 struct config_group tpg_auth_group; 895 struct config_group tpg_param_group; 896 }; 897 898 static inline struct se_portal_group *to_tpg(struct config_item *item) 899 { 900 return container_of(to_config_group(item), struct se_portal_group, 901 tpg_group); 902 } 903 904 static inline struct se_portal_group *attrib_to_tpg(struct config_item *item) 905 { 906 return container_of(to_config_group(item), struct se_portal_group, 907 tpg_attrib_group); 908 } 909 910 static inline struct se_portal_group *auth_to_tpg(struct config_item *item) 911 { 912 return container_of(to_config_group(item), struct se_portal_group, 913 tpg_auth_group); 914 } 915 916 static inline struct se_portal_group *param_to_tpg(struct config_item *item) 917 { 918 return container_of(to_config_group(item), struct se_portal_group, 919 tpg_param_group); 920 } 921 922 struct se_wwn { 923 struct target_fabric_configfs *wwn_tf; 924 struct config_group wwn_group; 925 struct config_group *wwn_default_groups[2]; 926 struct config_group fabric_stat_group; 927 }; 928 929 static inline void atomic_inc_mb(atomic_t *v) 930 { 931 smp_mb__before_atomic(); 932 atomic_inc(v); 933 smp_mb__after_atomic(); 934 } 935 936 static inline void atomic_dec_mb(atomic_t *v) 937 { 938 smp_mb__before_atomic(); 939 atomic_dec(v); 940 smp_mb__after_atomic(); 941 } 942 943 #endif /* TARGET_CORE_BASE_H */ 944