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 max_write_same_len, disabled by default */ 67#define DA_MAX_WRITE_SAME_LEN 0 68/* Use a model alias based on the configfs backend device name */ 69#define DA_EMULATE_MODEL_ALIAS 0 70/* Emulation for WriteCache and SYNCHRONIZE_CACHE */ 71#define DA_EMULATE_WRITE_CACHE 0 72/* Emulation for UNIT ATTENTION Interlock Control */ 73#define DA_EMULATE_UA_INTLLCK_CTRL 0 74/* Emulation for TASK_ABORTED status (TAS) by default */ 75#define DA_EMULATE_TAS 1 76/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ 77#define DA_EMULATE_TPU 0 78/* 79 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using 80 * block/blk-lib.c:blkdev_issue_discard() 81 */ 82#define DA_EMULATE_TPWS 0 83/* Emulation for CompareAndWrite (AtomicTestandSet) by default */ 84#define DA_EMULATE_CAW 1 85/* Emulation for 3rd Party Copy (ExtendedCopy) by default */ 86#define DA_EMULATE_3PC 1 87/* No Emulation for PSCSI by default */ 88#define DA_EMULATE_ALUA 0 89/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ 90#define DA_ENFORCE_PR_ISIDS 1 91/* Force SPC-3 PR Activate Persistence across Target Power Loss */ 92#define DA_FORCE_PR_APTPL 0 93#define DA_STATUS_MAX_SECTORS_MIN 16 94#define DA_STATUS_MAX_SECTORS_MAX 8192 95/* By default don't report non-rotating (solid state) medium */ 96#define DA_IS_NONROT 0 97/* Queue Algorithm Modifier default for restricted reordering in control mode page */ 98#define DA_EMULATE_REST_REORD 0 99 100#define SE_INQUIRY_BUF 1024 101#define SE_MODE_PAGE_BUF 512 102#define SE_SENSE_BUF 96 103 104/* struct se_hba->hba_flags */ 105enum hba_flags_table { 106 HBA_FLAGS_INTERNAL_USE = 0x01, 107 HBA_FLAGS_PSCSI_MODE = 0x02, 108}; 109 110/* Special transport agnostic struct se_cmd->t_states */ 111enum transport_state_table { 112 TRANSPORT_NO_STATE = 0, 113 TRANSPORT_NEW_CMD = 1, 114 TRANSPORT_WRITE_PENDING = 3, 115 TRANSPORT_PROCESSING = 5, 116 TRANSPORT_COMPLETE = 6, 117 TRANSPORT_ISTATE_PROCESSING = 11, 118 TRANSPORT_COMPLETE_QF_WP = 18, 119 TRANSPORT_COMPLETE_QF_OK = 19, 120}; 121 122/* Used for struct se_cmd->se_cmd_flags */ 123enum se_cmd_flags_table { 124 SCF_SUPPORTED_SAM_OPCODE = 0x00000001, 125 SCF_TRANSPORT_TASK_SENSE = 0x00000002, 126 SCF_EMULATED_TASK_SENSE = 0x00000004, 127 SCF_SCSI_DATA_CDB = 0x00000008, 128 SCF_SCSI_TMR_CDB = 0x00000010, 129 SCF_FUA = 0x00000080, 130 SCF_SE_LUN_CMD = 0x00000100, 131 SCF_BIDI = 0x00000400, 132 SCF_SENT_CHECK_CONDITION = 0x00000800, 133 SCF_OVERFLOW_BIT = 0x00001000, 134 SCF_UNDERFLOW_BIT = 0x00002000, 135 SCF_SEND_DELAYED_TAS = 0x00004000, 136 SCF_ALUA_NON_OPTIMIZED = 0x00008000, 137 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, 138 SCF_COMPARE_AND_WRITE = 0x00080000, 139 SCF_COMPARE_AND_WRITE_POST = 0x00100000, 140 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000, 141 SCF_ACK_KREF = 0x00400000, 142}; 143 144/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ 145enum transport_lunflags_table { 146 TRANSPORT_LUNFLAGS_READ_ONLY = 0x01, 147 TRANSPORT_LUNFLAGS_READ_WRITE = 0x02, 148}; 149 150/* 151 * Used by transport_send_check_condition_and_sense() 152 * to signal which ASC/ASCQ sense payload should be built. 153 */ 154typedef unsigned __bitwise__ sense_reason_t; 155 156enum tcm_sense_reason_table { 157#define R(x) (__force sense_reason_t )(x) 158 TCM_NO_SENSE = R(0x00), 159 TCM_NON_EXISTENT_LUN = R(0x01), 160 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), 161 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), 162 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), 163 TCM_SERVICE_CRC_ERROR = R(0x05), 164 TCM_SNACK_REJECTED = R(0x06), 165 TCM_SECTOR_COUNT_TOO_MANY = R(0x07), 166 TCM_INVALID_CDB_FIELD = R(0x08), 167 TCM_INVALID_PARAMETER_LIST = R(0x09), 168 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), 169 TCM_UNKNOWN_MODE_PAGE = R(0x0b), 170 TCM_WRITE_PROTECTED = R(0x0c), 171 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), 172 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), 173 TCM_CHECK_CONDITION_NOT_READY = R(0x0f), 174 TCM_RESERVATION_CONFLICT = R(0x10), 175 TCM_ADDRESS_OUT_OF_RANGE = R(0x11), 176 TCM_OUT_OF_RESOURCES = R(0x12), 177 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), 178 TCM_MISCOMPARE_VERIFY = R(0x14), 179 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), 180 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), 181 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), 182#undef R 183}; 184 185enum target_sc_flags_table { 186 TARGET_SCF_BIDI_OP = 0x01, 187 TARGET_SCF_ACK_KREF = 0x02, 188 TARGET_SCF_UNKNOWN_SIZE = 0x04, 189}; 190 191/* fabric independent task management function values */ 192enum 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 */ 203enum 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 */ 215typedef enum { 216 SCSI_INST_INDEX, 217 SCSI_DEVICE_INDEX, 218 SCSI_AUTH_INTR_INDEX, 219 SCSI_INDEX_TYPE_MAX 220} scsi_index_t; 221 222struct se_cmd; 223 224struct 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 230struct 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 237struct 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 255struct 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 266struct 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 275struct 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 303struct 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 313struct 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 324struct 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 364struct 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 389struct 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 404enum 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 418enum 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 425enum 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 437struct 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_REQUEST_STOP (1 << 8) 493#define CMD_T_BUSY (1 << 9) 494#define CMD_T_TAS (1 << 10) 495#define CMD_T_FABRIC_STOP (1 << 11) 496 spinlock_t t_state_lock; 497 struct kref cmd_kref; 498 struct completion t_transport_stop_comp; 499 500 struct work_struct work; 501 502 struct scatterlist *t_data_sg; 503 struct scatterlist *t_data_sg_orig; 504 unsigned int t_data_nents; 505 unsigned int t_data_nents_orig; 506 void *t_data_vmap; 507 struct scatterlist *t_bidi_data_sg; 508 unsigned int t_bidi_data_nents; 509 510 /* Used for lun->lun_ref counting */ 511 int lun_ref_active; 512 513 struct list_head state_list; 514 515 /* old task stop completion, consider merging with some of the above */ 516 struct completion task_stop_comp; 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}; 533 534struct se_ua { 535 u8 ua_asc; 536 u8 ua_ascq; 537 struct list_head ua_nacl_list; 538}; 539 540struct 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 569static 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 575static 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 581static 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 587static 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 593static 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 599struct 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 617struct se_device; 618struct se_transform_info; 619struct scatterlist; 620 621struct 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 627struct 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 635struct 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 661struct 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 u32 hw_block_size; 681 u32 block_size; 682 u32 hw_max_sectors; 683 u32 optimal_sectors; 684 u32 hw_queue_depth; 685 u32 queue_depth; 686 u32 max_unmap_lba_count; 687 u32 max_unmap_block_desc_count; 688 u32 unmap_granularity; 689 u32 unmap_granularity_alignment; 690 u32 max_write_same_len; 691 u32 max_bytes_per_io; 692 struct se_device *da_dev; 693 struct config_group da_group; 694}; 695 696struct se_port_stat_grps { 697 struct config_group stat_group; 698 struct config_group scsi_port_group; 699 struct config_group scsi_tgt_port_group; 700 struct config_group scsi_transport_group; 701}; 702 703struct scsi_port_stats { 704 atomic_long_t cmd_pdus; 705 atomic_long_t tx_data_octets; 706 atomic_long_t rx_data_octets; 707}; 708 709struct se_lun { 710 u64 unpacked_lun; 711#define SE_LUN_LINK_MAGIC 0xffff7771 712 u32 lun_link_magic; 713 u32 lun_access; 714 u32 lun_index; 715 716 /* RELATIVE TARGET PORT IDENTIFER */ 717 u16 lun_rtpi; 718 atomic_t lun_acl_count; 719 struct se_device __rcu *lun_se_dev; 720 721 struct list_head lun_deve_list; 722 spinlock_t lun_deve_lock; 723 724 /* ALUA state */ 725 int lun_tg_pt_secondary_stat; 726 int lun_tg_pt_secondary_write_md; 727 atomic_t lun_tg_pt_secondary_offline; 728 struct mutex lun_tg_pt_md_mutex; 729 730 /* ALUA target port group linkage */ 731 struct list_head lun_tg_pt_gp_link; 732 struct t10_alua_tg_pt_gp *lun_tg_pt_gp; 733 spinlock_t lun_tg_pt_gp_lock; 734 735 struct se_portal_group *lun_tpg; 736 struct scsi_port_stats lun_stats; 737 struct config_group lun_group; 738 struct se_port_stat_grps port_stat_grps; 739 struct completion lun_ref_comp; 740 struct percpu_ref lun_ref; 741 struct list_head lun_dev_link; 742 struct hlist_node link; 743 struct rcu_head rcu_head; 744}; 745 746struct se_dev_stat_grps { 747 struct config_group stat_group; 748 struct config_group scsi_dev_group; 749 struct config_group scsi_tgt_dev_group; 750 struct config_group scsi_lu_group; 751}; 752 753struct se_device { 754#define SE_DEV_LINK_MAGIC 0xfeeddeef 755 u32 dev_link_magic; 756 /* RELATIVE TARGET PORT IDENTIFER Counter */ 757 u16 dev_rpti_counter; 758 /* Used for SAM Task Attribute ordering */ 759 u32 dev_cur_ordered_id; 760 u32 dev_flags; 761#define DF_CONFIGURED 0x00000001 762#define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 763#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 764#define DF_USING_UDEV_PATH 0x00000008 765#define DF_USING_ALIAS 0x00000010 766#define DF_READ_ONLY 0x00000020 767 /* Physical device queue depth */ 768 u32 queue_depth; 769 /* Used for SPC-2 reservations enforce of ISIDs */ 770 u64 dev_res_bin_isid; 771 /* Pointer to transport specific device structure */ 772 u32 dev_index; 773 u64 creation_time; 774 atomic_long_t num_resets; 775 atomic_long_t num_cmds; 776 atomic_long_t read_bytes; 777 atomic_long_t write_bytes; 778 /* Active commands on this virtual SE device */ 779 atomic_t simple_cmds; 780 atomic_t dev_ordered_sync; 781 atomic_t dev_qf_count; 782 u32 export_count; 783 spinlock_t delayed_cmd_lock; 784 spinlock_t execute_task_lock; 785 spinlock_t dev_reservation_lock; 786 unsigned int dev_reservation_flags; 787#define DRF_SPC2_RESERVATIONS 0x00000001 788#define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 789 spinlock_t se_port_lock; 790 spinlock_t se_tmr_lock; 791 spinlock_t qf_cmd_lock; 792 struct semaphore caw_sem; 793 /* Used for legacy SPC-2 reservationsa */ 794 struct se_node_acl *dev_reserved_node_acl; 795 /* Used for ALUA Logical Unit Group membership */ 796 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; 797 /* Used for SPC-3 Persistent Reservations */ 798 struct t10_pr_registration *dev_pr_res_holder; 799 struct list_head dev_sep_list; 800 struct list_head dev_tmr_list; 801 struct workqueue_struct *tmr_wq; 802 struct work_struct qf_work_queue; 803 struct list_head delayed_cmd_list; 804 struct list_head state_list; 805 struct list_head qf_cmd_list; 806 struct list_head g_dev_node; 807 /* Pointer to associated SE HBA */ 808 struct se_hba *se_hba; 809 /* T10 Inquiry and VPD WWN Information */ 810 struct t10_wwn t10_wwn; 811 /* T10 Asymmetric Logical Unit Assignment for Target Ports */ 812 struct t10_alua t10_alua; 813 /* T10 SPC-2 + SPC-3 Reservations */ 814 struct t10_reservation t10_pr; 815 struct se_dev_attrib dev_attrib; 816 struct config_group dev_group; 817 struct config_group dev_pr_group; 818 struct se_dev_stat_grps dev_stat_grps; 819#define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ 820 unsigned char dev_alias[SE_DEV_ALIAS_LEN]; 821#define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ 822 unsigned char udev_path[SE_UDEV_PATH_LEN]; 823 /* Pointer to template of function pointers for transport */ 824 const struct target_backend_ops *transport; 825 /* Linked list for struct se_hba struct se_device list */ 826 struct list_head dev_list; 827 struct se_lun xcopy_lun; 828 /* Protection Information */ 829 int prot_length; 830 /* For se_lun->lun_se_dev RCU read-side critical access */ 831 u32 hba_index; 832 struct rcu_head rcu_head; 833}; 834 835struct se_hba { 836 u16 hba_tpgt; 837 u32 hba_id; 838 /* See hba_flags_table */ 839 u32 hba_flags; 840 /* Virtual iSCSI devices attached. */ 841 u32 dev_count; 842 u32 hba_index; 843 /* Pointer to transport specific host structure. */ 844 void *hba_ptr; 845 struct list_head hba_node; 846 spinlock_t device_lock; 847 struct config_group hba_group; 848 struct mutex hba_access_mutex; 849 struct target_backend *backend; 850}; 851 852struct se_tpg_np { 853 struct se_portal_group *tpg_np_parent; 854 struct config_group tpg_np_group; 855}; 856 857static inline struct se_tpg_np *to_tpg_np(struct config_item *item) 858{ 859 return container_of(to_config_group(item), struct se_tpg_np, 860 tpg_np_group); 861} 862 863struct se_portal_group { 864 /* 865 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. 866 * 867 * Negative values can be used by fabric drivers for internal use TPGs. 868 */ 869 int proto_id; 870 /* Number of ACLed Initiator Nodes for this TPG */ 871 u32 num_node_acls; 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 899static 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 905static 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 911static 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 917static 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 923struct 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 930static 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 937static 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