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 <scsi/scsi_cmnd.h>
12 #define TARGET_CORE_MOD_VERSION "v4.0.0-rc7-ml"
13 #define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
15 /* Used by transport_generic_allocate_iovecs() */
16 #define TRANSPORT_IOV_DATA_BUFFER 5
17 /* Maximum Number of LUNs per Target Portal Group */
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_ASC_KEY_OFFSET 12
40 #define SPC_ASCQ_KEY_OFFSET 13
41 #define TRANSPORT_IQN_LEN 224
42 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
43 #define LU_GROUP_NAME_BUF 256
44 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
45 #define TG_PT_GROUP_NAME_BUF 256
46 /* Used to parse VPD into struct t10_vpd */
47 #define VPD_TMP_BUF_SIZE 128
48 /* Used by transport_generic_cmd_sequencer() */
49 #define READ_BLOCK_LEN 6
50 #define READ_CAP_LEN 8
51 #define READ_POSITION_LEN 20
52 #define INQUIRY_LEN 36
53 /* Used by transport_get_inquiry_vpd_serial() */
54 #define INQUIRY_VPD_SERIAL_LEN 254
55 /* Used by transport_get_inquiry_vpd_device_ident() */
56 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
58 /* struct se_hba->hba_flags */
59 enum hba_flags_table
{
60 HBA_FLAGS_INTERNAL_USE
= 0x01,
61 HBA_FLAGS_PSCSI_MODE
= 0x02,
64 /* struct se_lun->lun_status */
65 enum transport_lun_status_table
{
66 TRANSPORT_LUN_STATUS_FREE
= 0,
67 TRANSPORT_LUN_STATUS_ACTIVE
= 1,
70 /* struct se_portal_group->se_tpg_type */
71 enum transport_tpg_type_table
{
72 TRANSPORT_TPG_TYPE_NORMAL
= 0,
73 TRANSPORT_TPG_TYPE_DISCOVERY
= 1,
76 /* Used for generate timer flags */
77 enum timer_flags_table
{
82 /* Special transport agnostic struct se_cmd->t_states */
83 enum transport_state_table
{
84 TRANSPORT_NO_STATE
= 0,
85 TRANSPORT_NEW_CMD
= 1,
86 TRANSPORT_DEFERRED_CMD
= 2,
87 TRANSPORT_WRITE_PENDING
= 3,
88 TRANSPORT_PROCESS_WRITE
= 4,
89 TRANSPORT_PROCESSING
= 5,
90 TRANSPORT_COMPLETE_OK
= 6,
91 TRANSPORT_COMPLETE_FAILURE
= 7,
92 TRANSPORT_COMPLETE_TIMEOUT
= 8,
93 TRANSPORT_PROCESS_TMR
= 9,
94 TRANSPORT_TMR_COMPLETE
= 10,
95 TRANSPORT_ISTATE_PROCESSING
= 11,
96 TRANSPORT_ISTATE_PROCESSED
= 12,
98 TRANSPORT_REMOVE
= 14,
100 TRANSPORT_NEW_CMD_MAP
= 16,
101 TRANSPORT_FREE_CMD_INTR
= 17,
104 /* Used for struct se_cmd->se_cmd_flags */
105 enum se_cmd_flags_table
{
106 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
107 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
108 SCF_EMULATED_TASK_SENSE
= 0x00000004,
109 SCF_SCSI_DATA_SG_IO_CDB
= 0x00000008,
110 SCF_SCSI_CONTROL_SG_IO_CDB
= 0x00000010,
111 SCF_SCSI_CONTROL_NONSG_IO_CDB
= 0x00000020,
112 SCF_SCSI_NON_DATA_CDB
= 0x00000040,
113 SCF_SCSI_CDB_EXCEPTION
= 0x00000080,
114 SCF_SCSI_RESERVATION_CONFLICT
= 0x00000100,
115 SCF_CMD_PASSTHROUGH_NOALLOC
= 0x00000200,
116 SCF_SE_CMD_FAILED
= 0x00000400,
117 SCF_SE_LUN_CMD
= 0x00000800,
118 SCF_SE_ALLOW_EOO
= 0x00001000,
119 SCF_SE_DISABLE_ONLINE_CHECK
= 0x00002000,
120 SCF_SENT_CHECK_CONDITION
= 0x00004000,
121 SCF_OVERFLOW_BIT
= 0x00008000,
122 SCF_UNDERFLOW_BIT
= 0x00010000,
123 SCF_SENT_DELAYED_TAS
= 0x00020000,
124 SCF_ALUA_NON_OPTIMIZED
= 0x00040000,
125 SCF_DELAYED_CMD_FROM_SAM_ATTR
= 0x00080000,
126 SCF_PASSTHROUGH_SG_TO_MEM
= 0x00100000,
127 SCF_PASSTHROUGH_CONTIG_TO_SG
= 0x00200000,
128 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00400000,
129 SCF_EMULATE_SYNC_CACHE
= 0x00800000,
130 SCF_EMULATE_CDB_ASYNC
= 0x01000000,
131 SCF_EMULATE_SYNC_UNMAP
= 0x02000000
134 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
135 enum transport_lunflags_table
{
136 TRANSPORT_LUNFLAGS_NO_ACCESS
= 0x00,
137 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
= 0x01,
138 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x02,
139 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x04,
142 /* struct se_device->dev_status */
143 enum transport_device_status_table
{
144 TRANSPORT_DEVICE_ACTIVATED
= 0x01,
145 TRANSPORT_DEVICE_DEACTIVATED
= 0x02,
146 TRANSPORT_DEVICE_QUEUE_FULL
= 0x04,
147 TRANSPORT_DEVICE_SHUTDOWN
= 0x08,
148 TRANSPORT_DEVICE_OFFLINE_ACTIVATED
= 0x10,
149 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED
= 0x20,
153 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
154 * to signal which ASC/ASCQ sense payload should be built.
156 enum tcm_sense_reason_table
{
157 TCM_NON_EXISTENT_LUN
= 0x01,
158 TCM_UNSUPPORTED_SCSI_OPCODE
= 0x02,
159 TCM_INCORRECT_AMOUNT_OF_DATA
= 0x03,
160 TCM_UNEXPECTED_UNSOLICITED_DATA
= 0x04,
161 TCM_SERVICE_CRC_ERROR
= 0x05,
162 TCM_SNACK_REJECTED
= 0x06,
163 TCM_SECTOR_COUNT_TOO_MANY
= 0x07,
164 TCM_INVALID_CDB_FIELD
= 0x08,
165 TCM_INVALID_PARAMETER_LIST
= 0x09,
166 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= 0x0a,
167 TCM_UNKNOWN_MODE_PAGE
= 0x0b,
168 TCM_WRITE_PROTECTED
= 0x0c,
169 TCM_CHECK_CONDITION_ABORT_CMD
= 0x0d,
170 TCM_CHECK_CONDITION_UNIT_ATTENTION
= 0x0e,
171 TCM_CHECK_CONDITION_NOT_READY
= 0x0f,
175 atomic_t obj_access_count
;
176 } ____cacheline_aligned
;
179 * Used by TCM Core internally to signal if ALUA emulation is enabled or
180 * disabled, or running in with TCM/pSCSI passthrough mode
183 SPC_ALUA_PASSTHROUGH
,
189 * Used by TCM Core internally to signal if SAM Task Attribute emulation
190 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
193 SAM_TASK_ATTR_PASSTHROUGH
,
194 SAM_TASK_ATTR_UNTAGGED
,
195 SAM_TASK_ATTR_EMULATED
196 } t10_task_attr_index_t
;
199 * Used for target SCSI statistics
204 SCSI_AUTH_INTR_INDEX
,
211 t10_alua_index_t alua_type
;
212 /* ALUA Target Port Group ID */
213 u16 alua_tg_pt_gps_counter
;
214 u32 alua_tg_pt_gps_count
;
215 spinlock_t tg_pt_gps_lock
;
216 struct se_subsystem_dev
*t10_sub_dev
;
217 /* Used for default ALUA Target Port Group */
218 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
219 /* Used for default ALUA Target Port Group ConfigFS group */
220 struct config_group alua_tg_pt_gps_group
;
221 int (*alua_state_check
)(struct se_cmd
*, unsigned char *, u8
*);
222 struct list_head tg_pt_gps_list
;
223 } ____cacheline_aligned
;
225 struct t10_alua_lu_gp
{
229 atomic_t lu_gp_shutdown
;
230 atomic_t lu_gp_ref_cnt
;
231 spinlock_t lu_gp_lock
;
232 struct config_group lu_gp_group
;
233 struct list_head lu_gp_node
;
234 struct list_head lu_gp_mem_list
;
235 } ____cacheline_aligned
;
237 struct t10_alua_lu_gp_member
{
239 atomic_t lu_gp_mem_ref_cnt
;
240 spinlock_t lu_gp_mem_lock
;
241 struct t10_alua_lu_gp
*lu_gp
;
242 struct se_device
*lu_gp_mem_dev
;
243 struct list_head lu_gp_mem_list
;
244 } ____cacheline_aligned
;
246 struct t10_alua_tg_pt_gp
{
248 int tg_pt_gp_valid_id
;
249 int tg_pt_gp_alua_access_status
;
250 int tg_pt_gp_alua_access_type
;
251 int tg_pt_gp_nonop_delay_msecs
;
252 int tg_pt_gp_trans_delay_msecs
;
254 int tg_pt_gp_write_metadata
;
255 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
256 #define ALUA_MD_BUF_LEN 1024
257 u32 tg_pt_gp_md_buf_len
;
258 u32 tg_pt_gp_members
;
259 atomic_t tg_pt_gp_alua_access_state
;
260 atomic_t tg_pt_gp_ref_cnt
;
261 spinlock_t tg_pt_gp_lock
;
262 struct mutex tg_pt_gp_md_mutex
;
263 struct se_subsystem_dev
*tg_pt_gp_su_dev
;
264 struct config_group tg_pt_gp_group
;
265 struct list_head tg_pt_gp_list
;
266 struct list_head tg_pt_gp_mem_list
;
267 } ____cacheline_aligned
;
269 struct t10_alua_tg_pt_gp_member
{
271 atomic_t tg_pt_gp_mem_ref_cnt
;
272 spinlock_t tg_pt_gp_mem_lock
;
273 struct t10_alua_tg_pt_gp
*tg_pt_gp
;
274 struct se_port
*tg_pt
;
275 struct list_head tg_pt_gp_mem_list
;
276 } ____cacheline_aligned
;
279 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
280 int protocol_identifier_set
;
281 u32 protocol_identifier
;
282 u32 device_identifier_code_set
;
284 u32 device_identifier_type
;
285 struct list_head vpd_list
;
286 } ____cacheline_aligned
;
292 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
293 spinlock_t t10_vpd_lock
;
294 struct se_subsystem_dev
*t10_sub_dev
;
295 struct config_group t10_wwn_group
;
296 struct list_head t10_vpd_list
;
297 } ____cacheline_aligned
;
301 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
302 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
308 SPC3_PERSISTENT_RESERVATIONS
309 } t10_reservations_index_t
;
311 struct t10_pr_registration
{
312 /* Used for fabrics that contain WWN+ISID */
313 #define PR_REG_ISID_LEN 16
314 /* PR_REG_ISID_LEN + ',i,0x' */
315 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
316 char pr_reg_isid
[PR_REG_ISID_LEN
];
317 /* Used during APTPL metadata reading */
318 #define PR_APTPL_MAX_IPORT_LEN 256
319 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
320 /* Used during APTPL metadata reading */
321 #define PR_APTPL_MAX_TPORT_LEN 256
322 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
323 /* For writing out live meta data */
324 unsigned char *pr_aptpl_buf
;
327 /* Reservation effects all target ports */
328 int pr_reg_all_tg_pt
;
329 /* Activate Persistence across Target Power Loss */
334 /* Used for fabric initiator WWPNs using a ISID */
335 bool isid_present_at_reg
;
336 u32 pr_res_mapped_lun
;
337 u32 pr_aptpl_target_lun
;
338 u32 pr_res_generation
;
341 atomic_t pr_res_holders
;
342 struct se_node_acl
*pr_reg_nacl
;
343 struct se_dev_entry
*pr_reg_deve
;
344 struct se_lun
*pr_reg_tg_pt_lun
;
345 struct list_head pr_reg_list
;
346 struct list_head pr_reg_abort_list
;
347 struct list_head pr_reg_aptpl_list
;
348 struct list_head pr_reg_atp_list
;
349 struct list_head pr_reg_atp_mem_list
;
350 } ____cacheline_aligned
;
353 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
354 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
355 * core_setup_reservations()
357 struct t10_reservation_ops
{
358 int (*t10_reservation_check
)(struct se_cmd
*, u32
*);
359 int (*t10_seq_non_holder
)(struct se_cmd
*, unsigned char *, u32
);
360 int (*t10_pr_register
)(struct se_cmd
*);
361 int (*t10_pr_clear
)(struct se_cmd
*);
364 struct t10_reservation
{
365 /* Reservation effects all target ports */
367 /* Activate Persistence across Target Power Loss enabled
370 /* Used by struct t10_reservation->pr_aptpl_buf_len */
371 #define PR_APTPL_BUF_LEN 8192
372 u32 pr_aptpl_buf_len
;
374 t10_reservations_index_t res_type
;
375 spinlock_t registration_lock
;
376 spinlock_t aptpl_reg_lock
;
378 * This will always be set by one individual I_T Nexus.
379 * However with all_tg_pt=1, other I_T Nexus from the
380 * same initiator can access PR reg/res info on a different
383 * There is also the 'All Registrants' case, where there is
384 * a single *pr_res_holder of the reservation, but all
385 * registrations are considered reservation holders.
387 struct se_node_acl
*pr_res_holder
;
388 struct list_head registration_list
;
389 struct list_head aptpl_reg_list
;
390 struct t10_reservation_ops pr_ops
;
391 } ____cacheline_aligned
;
393 struct se_queue_req
{
396 struct list_head qr_list
;
397 } ____cacheline_aligned
;
399 struct se_queue_obj
{
401 spinlock_t cmd_queue_lock
;
402 struct list_head qobj_list
;
403 wait_queue_head_t thread_wq
;
404 } ____cacheline_aligned
;
407 * Used one per struct se_cmd to hold all extra struct se_task
408 * metadata. This structure is setup and allocated in
409 * drivers/target/target_core_transport.c:__transport_alloc_se_cmd()
411 struct se_transport_task
{
412 unsigned char *t_task_cdb
;
413 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
414 unsigned long long t_task_lba
;
423 u32 t_tasks_se_bidi_num
;
424 u32 t_tasks_sg_chained_no
;
427 atomic_t t_task_cdbs_left
;
428 atomic_t t_task_cdbs_ex_left
;
429 atomic_t t_task_cdbs_timeout_left
;
430 atomic_t t_task_cdbs_sent
;
431 atomic_t t_transport_aborted
;
432 atomic_t t_transport_active
;
433 atomic_t t_transport_complete
;
434 atomic_t t_transport_queue_active
;
435 atomic_t t_transport_sent
;
436 atomic_t t_transport_stop
;
437 atomic_t t_transport_timeout
;
438 atomic_t transport_dev_active
;
439 atomic_t transport_lun_active
;
440 atomic_t transport_lun_fe_stop
;
441 atomic_t transport_lun_stop
;
442 spinlock_t t_state_lock
;
443 struct completion t_transport_stop_comp
;
444 struct completion transport_lun_fe_stop_comp
;
445 struct completion transport_lun_stop_comp
;
446 struct scatterlist
*t_tasks_sg_chained
;
447 struct scatterlist t_tasks_sg_bounce
;
450 * Used for pre-registered fabric SGL passthrough WRITE and READ
451 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
452 * and other HW target mode fabric modules.
454 struct scatterlist
*t_task_pt_sgl
;
455 struct list_head
*t_mem_list
;
456 /* Used for BIDI READ */
457 struct list_head
*t_mem_bidi_list
;
458 struct list_head t_task_list
;
459 } ____cacheline_aligned
;
462 unsigned char task_sense
;
463 struct scatterlist
*task_sg
;
464 struct scatterlist
*task_sg_bidi
;
467 int task_error_status
;
468 int task_state_flags
;
470 unsigned long long task_lba
;
476 enum dma_data_direction task_data_direction
;
477 struct se_cmd
*task_se_cmd
;
478 struct se_device
*se_dev
;
479 struct completion task_stop_comp
;
480 atomic_t task_active
;
481 atomic_t task_execute_queue
;
482 atomic_t task_timeout
;
485 atomic_t task_state_active
;
486 struct timer_list task_timer
;
487 struct se_device
*se_obj_ptr
;
488 struct list_head t_list
;
489 struct list_head t_execute_list
;
490 struct list_head t_state_list
;
491 } ____cacheline_aligned
;
494 /* SAM response code being sent to initiator */
498 u8 scsi_sense_reason
;
499 u16 scsi_sense_length
;
500 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
501 int alua_nonop_delay
;
502 /* See include/linux/dma-mapping.h */
503 enum dma_data_direction data_direction
;
504 /* For SAM Task Attribute */
506 /* Transport protocol dependent state, see transport_state_table */
507 enum transport_state_table t_state
;
508 /* Transport protocol dependent state for out of order CmdSNs */
509 int deferred_t_state
;
510 /* Transport specific error status */
511 int transport_error_status
;
512 /* See se_cmd_flags_table */
515 /* Total size in bytes associated with command */
517 /* SCSI Presented Data Transfer Length */
521 /* Persistent Reservation key */
523 atomic_t transport_sent
;
524 /* Used for sense data */
526 struct list_head se_delayed_list
;
527 struct list_head se_ordered_list
;
528 struct list_head se_lun_list
;
529 struct se_device
*se_dev
;
530 struct se_dev_entry
*se_deve
;
531 struct se_device
*se_obj_ptr
;
532 struct se_device
*se_orig_obj_ptr
;
533 struct se_lun
*se_lun
;
534 /* Only used for internal passthrough and legacy TCM fabric modules */
535 struct se_session
*se_sess
;
536 struct se_tmr_req
*se_tmr_req
;
537 /* t_task is setup to t_task_backstore in transport_init_se_cmd() */
538 struct se_transport_task
*t_task
;
539 struct se_transport_task t_task_backstore
;
540 struct target_core_fabric_ops
*se_tfo
;
541 int (*transport_emulate_cdb
)(struct se_cmd
*);
542 void (*transport_split_cdb
)(unsigned long long, u32
*, unsigned char *);
543 void (*transport_wait_for_tasks
)(struct se_cmd
*, int, int);
544 void (*transport_complete_callback
)(struct se_cmd
*);
545 } ____cacheline_aligned
;
548 /* Task Management function to be preformed */
550 /* Task Management response to send */
553 /* Reference to ITT that Task Mgmt should be preformed */
555 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
557 void *fabric_tmr_ptr
;
558 struct se_cmd
*task_cmd
;
559 struct se_cmd
*ref_cmd
;
560 struct se_device
*tmr_dev
;
561 struct se_lun
*tmr_lun
;
562 struct list_head tmr_list
;
563 } ____cacheline_aligned
;
568 struct se_node_acl
*ua_nacl
;
569 struct list_head ua_dev_list
;
570 struct list_head ua_nacl_list
;
571 } ____cacheline_aligned
;
574 char initiatorname
[TRANSPORT_IQN_LEN
];
575 /* Used to signal demo mode created ACL, disabled by default */
576 bool dynamic_node_acl
;
582 spinlock_t stats_lock
;
583 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
584 atomic_t acl_pr_ref_count
;
585 struct se_dev_entry
*device_list
;
586 struct se_session
*nacl_sess
;
587 struct se_portal_group
*se_tpg
;
588 spinlock_t device_list_lock
;
589 spinlock_t nacl_sess_lock
;
590 struct config_group acl_group
;
591 struct config_group acl_attrib_group
;
592 struct config_group acl_auth_group
;
593 struct config_group acl_param_group
;
594 struct config_group acl_fabric_stat_group
;
595 struct config_group
*acl_default_groups
[5];
596 struct list_head acl_list
;
597 struct list_head acl_sess_list
;
598 } ____cacheline_aligned
;
602 struct se_node_acl
*se_node_acl
;
603 struct se_portal_group
*se_tpg
;
604 void *fabric_sess_ptr
;
605 struct list_head sess_list
;
606 struct list_head sess_acl_list
;
607 } ____cacheline_aligned
;
610 struct se_transform_info
;
613 struct se_ml_stat_grps
{
614 struct config_group stat_group
;
615 struct config_group scsi_auth_intr_group
;
616 struct config_group scsi_att_intr_port_group
;
620 char initiatorname
[TRANSPORT_IQN_LEN
];
622 struct se_node_acl
*se_lun_nacl
;
623 struct se_lun
*se_lun
;
624 struct list_head lacl_list
;
625 struct config_group se_lun_group
;
626 struct se_ml_stat_grps ml_stat_grps
;
627 } ____cacheline_aligned
;
629 struct se_dev_entry
{
630 bool def_pr_registered
;
631 /* See transport_lunflags_table */
645 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
646 atomic_t pr_ref_count
;
647 struct se_lun_acl
*se_lun_acl
;
649 struct se_lun
*se_lun
;
650 struct list_head alua_port_list
;
651 struct list_head ua_list
;
652 } ____cacheline_aligned
;
654 struct se_dev_limits
{
655 /* Max supported HW queue depth */
657 /* Max supported virtual queue depth */
659 /* From include/linux/blkdev.h for the other HW/SW limits. */
660 struct queue_limits limits
;
661 } ____cacheline_aligned
;
663 struct se_dev_attrib
{
665 int emulate_fua_write
;
666 int emulate_fua_read
;
667 int emulate_write_cache
;
668 int emulate_ua_intlck_ctrl
;
672 int emulate_reservations
;
674 int enforce_pr_isids
;
683 u32 max_unmap_lba_count
;
684 u32 max_unmap_block_desc_count
;
685 u32 unmap_granularity
;
686 u32 unmap_granularity_alignment
;
687 struct se_subsystem_dev
*da_sub_dev
;
688 struct config_group da_group
;
689 } ____cacheline_aligned
;
691 struct se_dev_stat_grps
{
692 struct config_group stat_group
;
693 struct config_group scsi_dev_group
;
694 struct config_group scsi_tgt_dev_group
;
695 struct config_group scsi_lu_group
;
698 struct se_subsystem_dev
{
699 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
700 #define SE_DEV_ALIAS_LEN 512
701 unsigned char se_dev_alias
[SE_DEV_ALIAS_LEN
];
702 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
703 #define SE_UDEV_PATH_LEN 512
704 unsigned char se_dev_udev_path
[SE_UDEV_PATH_LEN
];
706 struct se_hba
*se_dev_hba
;
707 struct se_device
*se_dev_ptr
;
708 struct se_dev_attrib se_dev_attrib
;
709 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
710 struct t10_alua t10_alua
;
711 /* T10 Inquiry and VPD WWN Information */
712 struct t10_wwn t10_wwn
;
713 /* T10 SPC-2 + SPC-3 Reservations */
714 struct t10_reservation t10_pr
;
715 spinlock_t se_dev_lock
;
717 struct list_head se_dev_node
;
718 struct config_group se_dev_group
;
719 /* For T10 Reservations */
720 struct config_group se_dev_pr_group
;
721 /* For target_core_stat.c groups */
722 struct se_dev_stat_grps dev_stat_grps
;
723 } ____cacheline_aligned
;
726 /* Set to 1 if thread is NOT sleeping on thread_sem */
728 u8 dev_status_timer_flags
;
729 /* RELATIVE TARGET PORT IDENTIFER Counter */
730 u16 dev_rpti_counter
;
731 /* Used for SAM Task Attribute ordering */
732 u32 dev_cur_ordered_id
;
735 /* See transport_device_status_table */
737 u32 dev_tcq_window_closed
;
738 /* Physical device queue depth */
740 /* Used for SPC-2 reservations enforce of ISIDs */
741 u64 dev_res_bin_isid
;
742 t10_task_attr_index_t dev_task_attr_type
;
743 /* Pointer to transport specific device structure */
751 spinlock_t stats_lock
;
752 /* Active commands on this virtual SE device */
753 atomic_t active_cmds
;
754 atomic_t simple_cmds
;
756 atomic_t dev_ordered_id
;
757 atomic_t dev_tur_active
;
758 atomic_t execute_tasks
;
759 atomic_t dev_status_thr_count
;
760 atomic_t dev_hoq_count
;
761 atomic_t dev_ordered_sync
;
762 struct se_obj dev_obj
;
763 struct se_obj dev_access_obj
;
764 struct se_obj dev_export_obj
;
765 struct se_queue_obj dev_queue_obj
;
766 spinlock_t delayed_cmd_lock
;
767 spinlock_t ordered_cmd_lock
;
768 spinlock_t execute_task_lock
;
769 spinlock_t state_task_lock
;
770 spinlock_t dev_alua_lock
;
771 spinlock_t dev_reservation_lock
;
772 spinlock_t dev_state_lock
;
773 spinlock_t dev_status_lock
;
774 spinlock_t dev_status_thr_lock
;
775 spinlock_t se_port_lock
;
776 spinlock_t se_tmr_lock
;
777 /* Used for legacy SPC-2 reservationsa */
778 struct se_node_acl
*dev_reserved_node_acl
;
779 /* Used for ALUA Logical Unit Group membership */
780 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
781 /* Used for SPC-3 Persistent Reservations */
782 struct t10_pr_registration
*dev_pr_res_holder
;
783 struct list_head dev_sep_list
;
784 struct list_head dev_tmr_list
;
785 struct timer_list dev_status_timer
;
786 /* Pointer to descriptor for processing thread */
787 struct task_struct
*process_thread
;
788 pid_t process_thread_pid
;
789 struct task_struct
*dev_mgmt_thread
;
790 struct list_head delayed_cmd_list
;
791 struct list_head ordered_cmd_list
;
792 struct list_head execute_task_list
;
793 struct list_head state_task_list
;
794 /* Pointer to associated SE HBA */
795 struct se_hba
*se_hba
;
796 struct se_subsystem_dev
*se_sub_dev
;
797 /* Pointer to template of function pointers for transport */
798 struct se_subsystem_api
*transport
;
799 /* Linked list for struct se_hba struct se_device list */
800 struct list_head dev_list
;
801 /* Linked list for struct se_global->g_se_dev_list */
802 struct list_head g_se_dev_list
;
803 } ____cacheline_aligned
;
808 /* See hba_flags_table */
810 /* Virtual iSCSI devices attached. */
813 /* Pointer to transport specific host structure. */
815 /* Linked list for struct se_device */
816 struct list_head hba_dev_list
;
817 struct list_head hba_node
;
818 spinlock_t device_lock
;
819 struct config_group hba_group
;
820 struct mutex hba_access_mutex
;
821 struct se_subsystem_api
*transport
;
822 } ____cacheline_aligned
;
824 struct se_port_stat_grps
{
825 struct config_group stat_group
;
826 struct config_group scsi_port_group
;
827 struct config_group scsi_tgt_port_group
;
828 struct config_group scsi_transport_group
;
832 /* See transport_lun_status_table */
833 enum transport_lun_status_table lun_status
;
837 atomic_t lun_acl_count
;
838 spinlock_t lun_acl_lock
;
839 spinlock_t lun_cmd_lock
;
840 spinlock_t lun_sep_lock
;
841 struct completion lun_shutdown_comp
;
842 struct list_head lun_cmd_list
;
843 struct list_head lun_acl_list
;
844 struct se_device
*lun_se_dev
;
845 struct se_port
*lun_sep
;
846 struct config_group lun_group
;
847 struct se_port_stat_grps port_stat_grps
;
848 } ____cacheline_aligned
;
850 struct scsi_port_stats
{
854 } ____cacheline_aligned
;
857 /* RELATIVE TARGET PORT IDENTIFER */
859 int sep_tg_pt_secondary_stat
;
860 int sep_tg_pt_secondary_write_md
;
862 struct scsi_port_stats sep_stats
;
863 /* Used for ALUA Target Port Groups membership */
864 atomic_t sep_tg_pt_gp_active
;
865 atomic_t sep_tg_pt_secondary_offline
;
866 /* Used for PR ALL_TG_PT=1 */
867 atomic_t sep_tg_pt_ref_cnt
;
868 spinlock_t sep_alua_lock
;
869 struct mutex sep_tg_pt_md_mutex
;
870 struct t10_alua_tg_pt_gp_member
*sep_alua_tg_pt_gp_mem
;
871 struct se_lun
*sep_lun
;
872 struct se_portal_group
*sep_tpg
;
873 struct list_head sep_alua_list
;
874 struct list_head sep_list
;
875 } ____cacheline_aligned
;
878 struct se_portal_group
*tpg_np_parent
;
879 struct config_group tpg_np_group
;
880 } ____cacheline_aligned
;
882 struct se_portal_group
{
883 /* Type of target portal group, see transport_tpg_type_table */
884 enum transport_tpg_type_table se_tpg_type
;
885 /* Number of ACLed Initiator Nodes for this TPG */
887 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
888 atomic_t tpg_pr_ref_count
;
889 /* Spinlock for adding/removing ACLed Nodes */
890 spinlock_t acl_node_lock
;
891 /* Spinlock for adding/removing sessions */
892 spinlock_t session_lock
;
893 spinlock_t tpg_lun_lock
;
894 /* Pointer to $FABRIC_MOD portal group */
895 void *se_tpg_fabric_ptr
;
896 struct list_head se_tpg_node
;
897 /* linked list for initiator ACL list */
898 struct list_head acl_node_list
;
899 struct se_lun
*tpg_lun_list
;
900 struct se_lun tpg_virt_lun0
;
901 /* List of TCM sessions associated wth this TPG */
902 struct list_head tpg_sess_list
;
903 /* Pointer to $FABRIC_MOD dependent code */
904 struct target_core_fabric_ops
*se_tpg_tfo
;
905 struct se_wwn
*se_tpg_wwn
;
906 struct config_group tpg_group
;
907 struct config_group
*tpg_default_groups
[6];
908 struct config_group tpg_lun_group
;
909 struct config_group tpg_np_group
;
910 struct config_group tpg_acl_group
;
911 struct config_group tpg_attrib_group
;
912 struct config_group tpg_param_group
;
913 } ____cacheline_aligned
;
916 struct target_fabric_configfs
*wwn_tf
;
917 struct config_group wwn_group
;
918 struct config_group
*wwn_default_groups
[2];
919 struct config_group fabric_stat_group
;
920 } ____cacheline_aligned
;
922 #endif /* TARGET_CORE_BASE_H */