1 #ifndef TARGET_CORE_BASE_H
2 #define TARGET_CORE_BASE_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 <scsi/scsi_cmnd.h>
13 #define TARGET_CORE_MOD_VERSION "v4.1.0"
14 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
16 /* Maximum Number of LUNs per Target Portal Group */
17 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
18 #define TRANSPORT_MAX_LUNS_PER_TPG 256
20 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
22 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
23 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
24 * 16-byte CDBs by default and require an extra allocation for
25 * 32-byte CDBs to because of legacy issues.
27 * Within TCM Core there are no such legacy limitiations, so we go ahead
28 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
29 * within all TCM Core and subsystem plugin code.
31 #define TCM_MAX_COMMAND_SIZE 32
33 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
34 * defined 96, but the real limit is 252 (or 260 including the header)
36 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
37 /* Used by transport_send_check_condition_and_sense() */
38 #define SPC_SENSE_KEY_OFFSET 2
39 #define SPC_ADD_SENSE_LEN_OFFSET 7
40 #define SPC_DESC_TYPE_OFFSET 8
41 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
42 #define SPC_VALIDITY_OFFSET 10
43 #define SPC_ASC_KEY_OFFSET 12
44 #define SPC_ASCQ_KEY_OFFSET 13
45 #define TRANSPORT_IQN_LEN 224
46 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
47 #define LU_GROUP_NAME_BUF 256
48 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
49 #define TG_PT_GROUP_NAME_BUF 256
50 /* Used to parse VPD into struct t10_vpd */
51 #define VPD_TMP_BUF_SIZE 254
52 /* Used by transport_generic_cmd_sequencer() */
53 #define READ_BLOCK_LEN 6
54 #define READ_CAP_LEN 8
55 #define READ_POSITION_LEN 20
56 #define INQUIRY_LEN 36
57 /* Used by transport_get_inquiry_vpd_serial() */
58 #define INQUIRY_VPD_SERIAL_LEN 254
59 /* Used by transport_get_inquiry_vpd_device_ident() */
60 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
62 /* Attempts before moving from SHORT to LONG */
63 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
64 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
65 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
67 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
69 /* struct se_dev_attrib sanity values */
70 /* Default max_unmap_lba_count */
71 #define DA_MAX_UNMAP_LBA_COUNT 0
72 /* Default max_unmap_block_desc_count */
73 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
74 /* Default unmap_granularity */
75 #define DA_UNMAP_GRANULARITY_DEFAULT 0
76 /* Default unmap_granularity_alignment */
77 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
78 /* Default max_write_same_len, disabled by default */
79 #define DA_MAX_WRITE_SAME_LEN 0
80 /* Use a model alias based on the configfs backend device name */
81 #define DA_EMULATE_MODEL_ALIAS 0
82 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
83 #define DA_EMULATE_WRITE_CACHE 0
84 /* Emulation for UNIT ATTENTION Interlock Control */
85 #define DA_EMULATE_UA_INTLLCK_CTRL 0
86 /* Emulation for TASK_ABORTED status (TAS) by default */
87 #define DA_EMULATE_TAS 1
88 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
89 #define DA_EMULATE_TPU 0
91 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
92 * block/blk-lib.c:blkdev_issue_discard()
94 #define DA_EMULATE_TPWS 0
95 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
96 #define DA_EMULATE_CAW 1
97 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
98 #define DA_EMULATE_3PC 1
99 /* No Emulation for PSCSI by default */
100 #define DA_EMULATE_ALUA 0
101 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
102 #define DA_ENFORCE_PR_ISIDS 1
103 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
104 #define DA_FORCE_PR_APTPL 0
105 #define DA_STATUS_MAX_SECTORS_MIN 16
106 #define DA_STATUS_MAX_SECTORS_MAX 8192
107 /* By default don't report non-rotating (solid state) medium */
108 #define DA_IS_NONROT 0
109 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
110 #define DA_EMULATE_REST_REORD 0
112 #define SE_INQUIRY_BUF 1024
113 #define SE_MODE_PAGE_BUF 512
114 #define SE_SENSE_BUF 96
116 /* struct se_hba->hba_flags */
117 enum hba_flags_table {
118 HBA_FLAGS_INTERNAL_USE = 0x01,
119 HBA_FLAGS_PSCSI_MODE = 0x02,
122 /* struct se_lun->lun_status */
123 enum transport_lun_status_table {
124 TRANSPORT_LUN_STATUS_FREE = 0,
125 TRANSPORT_LUN_STATUS_ACTIVE = 1,
128 /* Special transport agnostic struct se_cmd->t_states */
129 enum transport_state_table {
130 TRANSPORT_NO_STATE = 0,
131 TRANSPORT_NEW_CMD = 1,
132 TRANSPORT_WRITE_PENDING = 3,
133 TRANSPORT_PROCESSING = 5,
134 TRANSPORT_COMPLETE = 6,
135 TRANSPORT_ISTATE_PROCESSING = 11,
136 TRANSPORT_COMPLETE_QF_WP = 18,
137 TRANSPORT_COMPLETE_QF_OK = 19,
140 /* Used for struct se_cmd->se_cmd_flags */
141 enum se_cmd_flags_table {
142 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
143 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
144 SCF_EMULATED_TASK_SENSE = 0x00000004,
145 SCF_SCSI_DATA_CDB = 0x00000008,
146 SCF_SCSI_TMR_CDB = 0x00000010,
147 SCF_FUA = 0x00000080,
148 SCF_SE_LUN_CMD = 0x00000100,
149 SCF_BIDI = 0x00000400,
150 SCF_SENT_CHECK_CONDITION = 0x00000800,
151 SCF_OVERFLOW_BIT = 0x00001000,
152 SCF_UNDERFLOW_BIT = 0x00002000,
153 SCF_SEND_DELAYED_TAS = 0x00004000,
154 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
155 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
156 SCF_COMPARE_AND_WRITE = 0x00080000,
157 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
158 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000,
161 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
162 enum transport_lunflags_table {
163 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
164 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
165 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
166 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
170 * Used by transport_send_check_condition_and_sense()
171 * to signal which ASC/ASCQ sense payload should be built.
173 typedef unsigned __bitwise__ sense_reason_t;
175 enum tcm_sense_reason_table {
176 #define R(x) (__force sense_reason_t )(x)
177 TCM_NO_SENSE = R(0x00),
178 TCM_NON_EXISTENT_LUN = R(0x01),
179 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
180 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
181 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
182 TCM_SERVICE_CRC_ERROR = R(0x05),
183 TCM_SNACK_REJECTED = R(0x06),
184 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
185 TCM_INVALID_CDB_FIELD = R(0x08),
186 TCM_INVALID_PARAMETER_LIST = R(0x09),
187 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
188 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
189 TCM_WRITE_PROTECTED = R(0x0c),
190 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
191 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
192 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
193 TCM_RESERVATION_CONFLICT = R(0x10),
194 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
195 TCM_OUT_OF_RESOURCES = R(0x12),
196 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
197 TCM_MISCOMPARE_VERIFY = R(0x14),
198 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
199 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
200 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
204 enum target_sc_flags_table {
205 TARGET_SCF_BIDI_OP = 0x01,
206 TARGET_SCF_ACK_KREF = 0x02,
207 TARGET_SCF_UNKNOWN_SIZE = 0x04,
210 /* fabric independent task management function values */
211 enum tcm_tmreq_table {
213 TMR_ABORT_TASK_SET = 2,
215 TMR_CLEAR_TASK_SET = 4,
217 TMR_TARGET_WARM_RESET = 6,
218 TMR_TARGET_COLD_RESET = 7,
221 /* fabric independent task management response values */
222 enum tcm_tmrsp_table {
223 TMR_FUNCTION_FAILED = 0,
224 TMR_FUNCTION_COMPLETE = 1,
225 TMR_TASK_DOES_NOT_EXIST = 2,
226 TMR_LUN_DOES_NOT_EXIST = 3,
227 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
228 TMR_FUNCTION_REJECTED = 5,
232 * Used for target SCSI statistics
237 SCSI_AUTH_INTR_INDEX,
243 struct t10_alua_lba_map_member {
244 struct list_head lba_map_mem_list;
245 int lba_map_mem_alua_state;
246 int lba_map_mem_alua_pg_id;
249 struct t10_alua_lba_map {
250 u64 lba_map_first_lba;
251 u64 lba_map_last_lba;
252 struct list_head lba_map_list;
253 struct list_head lba_map_mem_list;
257 /* ALUA Target Port Group ID */
258 u16 alua_tg_pt_gps_counter;
259 u32 alua_tg_pt_gps_count;
260 /* Referrals support */
261 spinlock_t lba_map_lock;
262 u32 lba_map_segment_size;
263 u32 lba_map_segment_multiplier;
264 struct list_head lba_map_list;
265 spinlock_t tg_pt_gps_lock;
266 struct se_device *t10_dev;
267 /* Used for default ALUA Target Port Group */
268 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
269 /* Used for default ALUA Target Port Group ConfigFS group */
270 struct config_group alua_tg_pt_gps_group;
271 struct list_head tg_pt_gps_list;
274 struct t10_alua_lu_gp {
278 atomic_t lu_gp_ref_cnt;
279 spinlock_t lu_gp_lock;
280 struct config_group lu_gp_group;
281 struct list_head lu_gp_node;
282 struct list_head lu_gp_mem_list;
285 struct t10_alua_lu_gp_member {
287 atomic_t lu_gp_mem_ref_cnt;
288 spinlock_t lu_gp_mem_lock;
289 struct t10_alua_lu_gp *lu_gp;
290 struct se_device *lu_gp_mem_dev;
291 struct list_head lu_gp_mem_list;
294 struct t10_alua_tg_pt_gp {
296 int tg_pt_gp_valid_id;
297 int tg_pt_gp_alua_supported_states;
298 int tg_pt_gp_alua_pending_state;
299 int tg_pt_gp_alua_previous_state;
300 int tg_pt_gp_alua_access_status;
301 int tg_pt_gp_alua_access_type;
302 int tg_pt_gp_nonop_delay_msecs;
303 int tg_pt_gp_trans_delay_msecs;
304 int tg_pt_gp_implicit_trans_secs;
306 int tg_pt_gp_write_metadata;
307 u32 tg_pt_gp_members;
308 atomic_t tg_pt_gp_alua_access_state;
309 atomic_t tg_pt_gp_ref_cnt;
310 spinlock_t tg_pt_gp_lock;
311 struct mutex tg_pt_gp_md_mutex;
312 struct se_device *tg_pt_gp_dev;
313 struct config_group tg_pt_gp_group;
314 struct list_head tg_pt_gp_list;
315 struct list_head tg_pt_gp_mem_list;
316 struct se_port *tg_pt_gp_alua_port;
317 struct se_node_acl *tg_pt_gp_alua_nacl;
318 struct delayed_work tg_pt_gp_transition_work;
319 struct completion *tg_pt_gp_transition_complete;
322 struct t10_alua_tg_pt_gp_member {
324 atomic_t tg_pt_gp_mem_ref_cnt;
325 spinlock_t tg_pt_gp_mem_lock;
326 struct t10_alua_tg_pt_gp *tg_pt_gp;
327 struct se_port *tg_pt;
328 struct list_head tg_pt_gp_mem_list;
332 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
333 int protocol_identifier_set;
334 u32 protocol_identifier;
335 u32 device_identifier_code_set;
337 u32 device_identifier_type;
338 struct list_head vpd_list;
345 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
346 spinlock_t t10_vpd_lock;
347 struct se_device *t10_dev;
348 struct config_group t10_wwn_group;
349 struct list_head t10_vpd_list;
352 struct t10_pr_registration {
353 /* Used for fabrics that contain WWN+ISID */
354 #define PR_REG_ISID_LEN 16
355 /* PR_REG_ISID_LEN + ',i,0x' */
356 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
357 char pr_reg_isid[PR_REG_ISID_LEN];
358 /* Used during APTPL metadata reading */
359 #define PR_APTPL_MAX_IPORT_LEN 256
360 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
361 /* Used during APTPL metadata reading */
362 #define PR_APTPL_MAX_TPORT_LEN 256
363 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
366 /* Reservation effects all target ports */
367 int pr_reg_all_tg_pt;
368 /* Activate Persistence across Target Power Loss */
373 /* Used for fabric initiator WWPNs using a ISID */
374 bool isid_present_at_reg;
375 u32 pr_res_mapped_lun;
376 u32 pr_aptpl_target_lun;
377 u32 pr_res_generation;
380 atomic_t pr_res_holders;
381 struct se_node_acl *pr_reg_nacl;
382 struct se_dev_entry *pr_reg_deve;
383 struct se_lun *pr_reg_tg_pt_lun;
384 struct list_head pr_reg_list;
385 struct list_head pr_reg_abort_list;
386 struct list_head pr_reg_aptpl_list;
387 struct list_head pr_reg_atp_list;
388 struct list_head pr_reg_atp_mem_list;
391 struct t10_reservation {
392 /* Reservation effects all target ports */
394 /* Activate Persistence across Target Power Loss enabled
397 #define PR_APTPL_BUF_LEN 262144
399 spinlock_t registration_lock;
400 spinlock_t aptpl_reg_lock;
402 * This will always be set by one individual I_T Nexus.
403 * However with all_tg_pt=1, other I_T Nexus from the
404 * same initiator can access PR reg/res info on a different
407 * There is also the 'All Registrants' case, where there is
408 * a single *pr_res_holder of the reservation, but all
409 * registrations are considered reservation holders.
411 struct se_node_acl *pr_res_holder;
412 struct list_head registration_list;
413 struct list_head aptpl_reg_list;
417 /* Task Management function to be performed */
419 /* Task Management response to send */
422 /* Reference to ITT that Task Mgmt should be performed */
424 void *fabric_tmr_ptr;
425 struct se_cmd *task_cmd;
426 struct se_device *tmr_dev;
427 struct se_lun *tmr_lun;
428 struct list_head tmr_list;
431 enum target_prot_op {
432 TARGET_PROT_NORMAL = 0,
433 TARGET_PROT_DIN_INSERT = (1 << 0),
434 TARGET_PROT_DOUT_INSERT = (1 << 1),
435 TARGET_PROT_DIN_STRIP = (1 << 2),
436 TARGET_PROT_DOUT_STRIP = (1 << 3),
437 TARGET_PROT_DIN_PASS = (1 << 4),
438 TARGET_PROT_DOUT_PASS = (1 << 5),
441 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
442 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
443 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
445 enum target_prot_type {
446 TARGET_DIF_TYPE0_PROT,
447 TARGET_DIF_TYPE1_PROT,
448 TARGET_DIF_TYPE2_PROT,
449 TARGET_DIF_TYPE3_PROT,
452 enum target_core_dif_check {
453 TARGET_DIF_CHECK_GUARD = 0x1 << 0,
454 TARGET_DIF_CHECK_APPTAG = 0x1 << 1,
455 TARGET_DIF_CHECK_REFTAG = 0x1 << 2,
458 struct se_dif_v1_tuple {
464 /* for sam_task_attr */
465 #define TCM_SIMPLE_TAG 0x20
466 #define TCM_HEAD_TAG 0x21
467 #define TCM_ORDERED_TAG 0x22
468 #define TCM_ACA_TAG 0x24
471 /* SAM response code being sent to initiator */
475 u16 scsi_sense_length;
476 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
477 int alua_nonop_delay;
478 /* See include/linux/dma-mapping.h */
479 enum dma_data_direction data_direction;
480 /* For SAM Task Attribute */
482 /* Used for se_sess->sess_tag_pool */
483 unsigned int map_tag;
484 /* Transport protocol dependent state, see transport_state_table */
485 enum transport_state_table t_state;
486 unsigned cmd_wait_set:1;
487 unsigned unknown_data_length:1;
488 /* See se_cmd_flags_table */
491 /* Total size in bytes associated with command */
495 /* Persistent Reservation key */
497 /* Used for sense data */
499 struct list_head se_delayed_node;
500 struct list_head se_qf_node;
501 struct se_device *se_dev;
502 struct se_dev_entry *se_deve;
503 struct se_lun *se_lun;
504 /* Only used for internal passthrough and legacy TCM fabric modules */
505 struct se_session *se_sess;
506 struct se_tmr_req *se_tmr_req;
507 struct list_head se_cmd_list;
508 struct completion cmd_wait_comp;
509 struct kref cmd_kref;
510 const struct target_core_fabric_ops *se_tfo;
511 sense_reason_t (*execute_cmd)(struct se_cmd *);
512 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
513 u32, enum dma_data_direction);
514 sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool);
516 unsigned char *t_task_cdb;
517 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
518 unsigned long long t_task_lba;
519 unsigned int t_task_nolb;
520 unsigned int transport_state;
521 #define CMD_T_ABORTED (1 << 0)
522 #define CMD_T_ACTIVE (1 << 1)
523 #define CMD_T_COMPLETE (1 << 2)
524 #define CMD_T_SENT (1 << 4)
525 #define CMD_T_STOP (1 << 5)
526 #define CMD_T_DEV_ACTIVE (1 << 7)
527 #define CMD_T_REQUEST_STOP (1 << 8)
528 #define CMD_T_BUSY (1 << 9)
529 spinlock_t t_state_lock;
530 struct completion t_transport_stop_comp;
532 struct work_struct work;
534 struct scatterlist *t_data_sg;
535 struct scatterlist *t_data_sg_orig;
536 unsigned int t_data_nents;
537 unsigned int t_data_nents_orig;
539 struct scatterlist *t_bidi_data_sg;
540 unsigned int t_bidi_data_nents;
542 struct list_head state_list;
545 /* old task stop completion, consider merging with some of the above */
546 struct completion task_stop_comp;
548 /* backend private data */
551 /* Used for lun->lun_ref counting */
554 /* DIF related members */
555 enum target_prot_op prot_op;
556 enum target_prot_type prot_type;
560 struct scatterlist *t_prot_sg;
561 unsigned int t_prot_nents;
562 sense_reason_t pi_err;
570 struct se_node_acl *ua_nacl;
571 struct list_head ua_nacl_list;
575 char initiatorname[TRANSPORT_IQN_LEN];
576 /* Used to signal demo mode created ACL, disabled by default */
577 bool dynamic_node_acl;
581 enum target_prot_type saved_prot_type;
582 #define MAX_ACL_TAG_SIZE 64
583 char acl_tag[MAX_ACL_TAG_SIZE];
584 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
585 atomic_t acl_pr_ref_count;
586 struct se_dev_entry **device_list;
587 struct se_session *nacl_sess;
588 struct se_portal_group *se_tpg;
589 spinlock_t device_list_lock;
590 spinlock_t nacl_sess_lock;
591 struct config_group acl_group;
592 struct config_group acl_attrib_group;
593 struct config_group acl_auth_group;
594 struct config_group acl_param_group;
595 struct config_group acl_fabric_stat_group;
596 struct config_group *acl_default_groups[5];
597 struct list_head acl_list;
598 struct list_head acl_sess_list;
599 struct completion acl_free_comp;
600 struct kref acl_kref;
604 unsigned sess_tearing_down:1;
606 enum target_prot_op sup_prot_ops;
607 enum target_prot_type sess_prot_type;
608 struct se_node_acl *se_node_acl;
609 struct se_portal_group *se_tpg;
610 void *fabric_sess_ptr;
611 struct list_head sess_list;
612 struct list_head sess_acl_list;
613 struct list_head sess_cmd_list;
614 struct list_head sess_wait_list;
615 spinlock_t sess_cmd_lock;
616 struct kref sess_kref;
618 struct percpu_ida sess_tag_pool;
622 struct se_transform_info;
625 struct se_ml_stat_grps {
626 struct config_group stat_group;
627 struct config_group scsi_auth_intr_group;
628 struct config_group scsi_att_intr_port_group;
632 char initiatorname[TRANSPORT_IQN_LEN];
634 struct se_node_acl *se_lun_nacl;
635 struct se_lun *se_lun;
636 struct list_head lacl_list;
637 struct config_group se_lun_group;
638 struct se_ml_stat_grps ml_stat_grps;
641 struct se_dev_entry {
642 bool def_pr_registered;
643 /* See transport_lunflags_table */
653 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
654 atomic_t pr_ref_count;
655 struct se_lun_acl *se_lun_acl;
657 struct se_lun *se_lun;
658 struct list_head alua_port_list;
659 struct list_head ua_list;
662 struct se_dev_attrib {
663 int emulate_model_alias;
665 int emulate_fua_write;
666 int emulate_fua_read;
667 int emulate_write_cache;
668 int emulate_ua_intlck_ctrl;
675 enum target_prot_type pi_prot_type;
676 enum target_prot_type hw_pi_prot_type;
677 int enforce_pr_isids;
680 int emulate_rest_reord;
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;
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;
705 #define SE_LUN_LINK_MAGIC 0xffff7771
707 /* See transport_lun_status_table */
708 enum transport_lun_status_table lun_status;
712 atomic_t lun_acl_count;
713 spinlock_t lun_acl_lock;
714 spinlock_t lun_sep_lock;
715 struct completion lun_shutdown_comp;
716 struct list_head lun_acl_list;
717 struct se_device *lun_se_dev;
718 struct se_port *lun_sep;
719 struct config_group lun_group;
720 struct se_port_stat_grps port_stat_grps;
721 struct completion lun_ref_comp;
722 struct percpu_ref lun_ref;
725 struct se_dev_stat_grps {
726 struct config_group stat_group;
727 struct config_group scsi_dev_group;
728 struct config_group scsi_tgt_dev_group;
729 struct config_group scsi_lu_group;
733 #define SE_DEV_LINK_MAGIC 0xfeeddeef
735 /* RELATIVE TARGET PORT IDENTIFER Counter */
736 u16 dev_rpti_counter;
737 /* Used for SAM Task Attribute ordering */
738 u32 dev_cur_ordered_id;
740 #define DF_CONFIGURED 0x00000001
741 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
742 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
743 #define DF_USING_UDEV_PATH 0x00000008
744 #define DF_USING_ALIAS 0x00000010
746 /* Physical device queue depth */
748 /* Used for SPC-2 reservations enforce of ISIDs */
749 u64 dev_res_bin_isid;
750 /* Pointer to transport specific device structure */
753 atomic_long_t num_resets;
754 atomic_long_t num_cmds;
755 atomic_long_t read_bytes;
756 atomic_long_t write_bytes;
757 /* Active commands on this virtual SE device */
758 atomic_t simple_cmds;
759 atomic_t dev_ordered_id;
760 atomic_t dev_ordered_sync;
761 atomic_t dev_qf_count;
763 spinlock_t delayed_cmd_lock;
764 spinlock_t execute_task_lock;
765 spinlock_t dev_reservation_lock;
766 unsigned int dev_reservation_flags;
767 #define DRF_SPC2_RESERVATIONS 0x00000001
768 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
769 spinlock_t se_port_lock;
770 spinlock_t se_tmr_lock;
771 spinlock_t qf_cmd_lock;
772 struct semaphore caw_sem;
773 /* Used for legacy SPC-2 reservationsa */
774 struct se_node_acl *dev_reserved_node_acl;
775 /* Used for ALUA Logical Unit Group membership */
776 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
777 /* Used for SPC-3 Persistent Reservations */
778 struct t10_pr_registration *dev_pr_res_holder;
779 struct list_head dev_sep_list;
780 struct list_head dev_tmr_list;
781 struct workqueue_struct *tmr_wq;
782 struct work_struct qf_work_queue;
783 struct list_head delayed_cmd_list;
784 struct list_head state_list;
785 struct list_head qf_cmd_list;
786 struct list_head g_dev_node;
787 /* Pointer to associated SE HBA */
788 struct se_hba *se_hba;
789 /* T10 Inquiry and VPD WWN Information */
790 struct t10_wwn t10_wwn;
791 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
792 struct t10_alua t10_alua;
793 /* T10 SPC-2 + SPC-3 Reservations */
794 struct t10_reservation t10_pr;
795 struct se_dev_attrib dev_attrib;
796 struct config_group dev_group;
797 struct config_group dev_pr_group;
798 struct se_dev_stat_grps dev_stat_grps;
799 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
800 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
801 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
802 unsigned char udev_path[SE_UDEV_PATH_LEN];
803 /* Pointer to template of function pointers for transport */
804 struct se_subsystem_api *transport;
805 /* Linked list for struct se_hba struct se_device list */
806 struct list_head dev_list;
807 struct se_lun xcopy_lun;
808 /* Protection Information */
815 /* See hba_flags_table */
817 /* Virtual iSCSI devices attached. */
820 /* Pointer to transport specific host structure. */
822 struct list_head hba_node;
823 spinlock_t device_lock;
824 struct config_group hba_group;
825 struct mutex hba_access_mutex;
826 struct se_subsystem_api *transport;
829 struct scsi_port_stats {
836 /* RELATIVE TARGET PORT IDENTIFER */
838 int sep_tg_pt_secondary_stat;
839 int sep_tg_pt_secondary_write_md;
841 struct scsi_port_stats sep_stats;
842 /* Used for ALUA Target Port Groups membership */
843 atomic_t sep_tg_pt_secondary_offline;
844 /* Used for PR ALL_TG_PT=1 */
845 atomic_t sep_tg_pt_ref_cnt;
846 spinlock_t sep_alua_lock;
847 struct mutex sep_tg_pt_md_mutex;
848 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
849 struct se_lun *sep_lun;
850 struct se_portal_group *sep_tpg;
851 struct list_head sep_alua_list;
852 struct list_head sep_list;
856 struct se_portal_group *tpg_np_parent;
857 struct config_group tpg_np_group;
860 struct se_portal_group {
862 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1.
864 * Negative values can be used by fabric drivers for internal use TPGs.
867 /* Number of ACLed Initiator Nodes for this TPG */
869 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
870 atomic_t tpg_pr_ref_count;
871 /* Spinlock for adding/removing ACLed Nodes */
872 spinlock_t acl_node_lock;
873 /* Spinlock for adding/removing sessions */
874 spinlock_t session_lock;
875 spinlock_t tpg_lun_lock;
876 struct list_head se_tpg_node;
877 /* linked list for initiator ACL list */
878 struct list_head acl_node_list;
879 struct se_lun **tpg_lun_list;
880 struct se_lun tpg_virt_lun0;
881 /* List of TCM sessions associated wth this TPG */
882 struct list_head tpg_sess_list;
883 /* Pointer to $FABRIC_MOD dependent code */
884 const struct target_core_fabric_ops *se_tpg_tfo;
885 struct se_wwn *se_tpg_wwn;
886 struct config_group tpg_group;
887 struct config_group *tpg_default_groups[7];
888 struct config_group tpg_lun_group;
889 struct config_group tpg_np_group;
890 struct config_group tpg_acl_group;
891 struct config_group tpg_attrib_group;
892 struct config_group tpg_auth_group;
893 struct config_group tpg_param_group;
897 struct target_fabric_configfs *wwn_tf;
898 struct config_group wwn_group;
899 struct config_group *wwn_default_groups[2];
900 struct config_group fabric_stat_group;
903 static inline void atomic_inc_mb(atomic_t *v)
905 smp_mb__before_atomic();
907 smp_mb__after_atomic();
910 static inline void atomic_dec_mb(atomic_t *v)
912 smp_mb__before_atomic();
914 smp_mb__after_atomic();
917 #endif /* TARGET_CORE_BASE_H */