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_SE_CMD_FAILED
= 0x00000400,
116 SCF_SE_LUN_CMD
= 0x00000800,
117 SCF_SE_ALLOW_EOO
= 0x00001000,
118 SCF_SENT_CHECK_CONDITION
= 0x00004000,
119 SCF_OVERFLOW_BIT
= 0x00008000,
120 SCF_UNDERFLOW_BIT
= 0x00010000,
121 SCF_SENT_DELAYED_TAS
= 0x00020000,
122 SCF_ALUA_NON_OPTIMIZED
= 0x00040000,
123 SCF_DELAYED_CMD_FROM_SAM_ATTR
= 0x00080000,
124 SCF_UNUSED
= 0x00100000,
125 SCF_PASSTHROUGH_CONTIG_TO_SG
= 0x00200000,
126 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00400000,
127 SCF_EMULATE_CDB_ASYNC
= 0x01000000,
130 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
131 enum transport_lunflags_table
{
132 TRANSPORT_LUNFLAGS_NO_ACCESS
= 0x00,
133 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
= 0x01,
134 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x02,
135 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x04,
138 /* struct se_device->dev_status */
139 enum transport_device_status_table
{
140 TRANSPORT_DEVICE_ACTIVATED
= 0x01,
141 TRANSPORT_DEVICE_DEACTIVATED
= 0x02,
142 TRANSPORT_DEVICE_QUEUE_FULL
= 0x04,
143 TRANSPORT_DEVICE_SHUTDOWN
= 0x08,
144 TRANSPORT_DEVICE_OFFLINE_ACTIVATED
= 0x10,
145 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED
= 0x20,
149 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
150 * to signal which ASC/ASCQ sense payload should be built.
152 enum tcm_sense_reason_table
{
153 TCM_NON_EXISTENT_LUN
= 0x01,
154 TCM_UNSUPPORTED_SCSI_OPCODE
= 0x02,
155 TCM_INCORRECT_AMOUNT_OF_DATA
= 0x03,
156 TCM_UNEXPECTED_UNSOLICITED_DATA
= 0x04,
157 TCM_SERVICE_CRC_ERROR
= 0x05,
158 TCM_SNACK_REJECTED
= 0x06,
159 TCM_SECTOR_COUNT_TOO_MANY
= 0x07,
160 TCM_INVALID_CDB_FIELD
= 0x08,
161 TCM_INVALID_PARAMETER_LIST
= 0x09,
162 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= 0x0a,
163 TCM_UNKNOWN_MODE_PAGE
= 0x0b,
164 TCM_WRITE_PROTECTED
= 0x0c,
165 TCM_CHECK_CONDITION_ABORT_CMD
= 0x0d,
166 TCM_CHECK_CONDITION_UNIT_ATTENTION
= 0x0e,
167 TCM_CHECK_CONDITION_NOT_READY
= 0x0f,
171 atomic_t obj_access_count
;
172 } ____cacheline_aligned
;
175 * Used by TCM Core internally to signal if ALUA emulation is enabled or
176 * disabled, or running in with TCM/pSCSI passthrough mode
179 SPC_ALUA_PASSTHROUGH
,
185 * Used by TCM Core internally to signal if SAM Task Attribute emulation
186 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
189 SAM_TASK_ATTR_PASSTHROUGH
,
190 SAM_TASK_ATTR_UNTAGGED
,
191 SAM_TASK_ATTR_EMULATED
192 } t10_task_attr_index_t
;
195 * Used for target SCSI statistics
200 SCSI_AUTH_INTR_INDEX
,
207 t10_alua_index_t alua_type
;
208 /* ALUA Target Port Group ID */
209 u16 alua_tg_pt_gps_counter
;
210 u32 alua_tg_pt_gps_count
;
211 spinlock_t tg_pt_gps_lock
;
212 struct se_subsystem_dev
*t10_sub_dev
;
213 /* Used for default ALUA Target Port Group */
214 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
215 /* Used for default ALUA Target Port Group ConfigFS group */
216 struct config_group alua_tg_pt_gps_group
;
217 int (*alua_state_check
)(struct se_cmd
*, unsigned char *, u8
*);
218 struct list_head tg_pt_gps_list
;
219 } ____cacheline_aligned
;
221 struct t10_alua_lu_gp
{
225 atomic_t lu_gp_shutdown
;
226 atomic_t lu_gp_ref_cnt
;
227 spinlock_t lu_gp_lock
;
228 struct config_group lu_gp_group
;
229 struct list_head lu_gp_node
;
230 struct list_head lu_gp_mem_list
;
231 } ____cacheline_aligned
;
233 struct t10_alua_lu_gp_member
{
235 atomic_t lu_gp_mem_ref_cnt
;
236 spinlock_t lu_gp_mem_lock
;
237 struct t10_alua_lu_gp
*lu_gp
;
238 struct se_device
*lu_gp_mem_dev
;
239 struct list_head lu_gp_mem_list
;
240 } ____cacheline_aligned
;
242 struct t10_alua_tg_pt_gp
{
244 int tg_pt_gp_valid_id
;
245 int tg_pt_gp_alua_access_status
;
246 int tg_pt_gp_alua_access_type
;
247 int tg_pt_gp_nonop_delay_msecs
;
248 int tg_pt_gp_trans_delay_msecs
;
250 int tg_pt_gp_write_metadata
;
251 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
252 #define ALUA_MD_BUF_LEN 1024
253 u32 tg_pt_gp_md_buf_len
;
254 u32 tg_pt_gp_members
;
255 atomic_t tg_pt_gp_alua_access_state
;
256 atomic_t tg_pt_gp_ref_cnt
;
257 spinlock_t tg_pt_gp_lock
;
258 struct mutex tg_pt_gp_md_mutex
;
259 struct se_subsystem_dev
*tg_pt_gp_su_dev
;
260 struct config_group tg_pt_gp_group
;
261 struct list_head tg_pt_gp_list
;
262 struct list_head tg_pt_gp_mem_list
;
263 } ____cacheline_aligned
;
265 struct t10_alua_tg_pt_gp_member
{
267 atomic_t tg_pt_gp_mem_ref_cnt
;
268 spinlock_t tg_pt_gp_mem_lock
;
269 struct t10_alua_tg_pt_gp
*tg_pt_gp
;
270 struct se_port
*tg_pt
;
271 struct list_head tg_pt_gp_mem_list
;
272 } ____cacheline_aligned
;
275 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
276 int protocol_identifier_set
;
277 u32 protocol_identifier
;
278 u32 device_identifier_code_set
;
280 u32 device_identifier_type
;
281 struct list_head vpd_list
;
282 } ____cacheline_aligned
;
288 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
289 spinlock_t t10_vpd_lock
;
290 struct se_subsystem_dev
*t10_sub_dev
;
291 struct config_group t10_wwn_group
;
292 struct list_head t10_vpd_list
;
293 } ____cacheline_aligned
;
297 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
298 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
304 SPC3_PERSISTENT_RESERVATIONS
305 } t10_reservations_index_t
;
307 struct t10_pr_registration
{
308 /* Used for fabrics that contain WWN+ISID */
309 #define PR_REG_ISID_LEN 16
310 /* PR_REG_ISID_LEN + ',i,0x' */
311 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
312 char pr_reg_isid
[PR_REG_ISID_LEN
];
313 /* Used during APTPL metadata reading */
314 #define PR_APTPL_MAX_IPORT_LEN 256
315 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
316 /* Used during APTPL metadata reading */
317 #define PR_APTPL_MAX_TPORT_LEN 256
318 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
319 /* For writing out live meta data */
320 unsigned char *pr_aptpl_buf
;
323 /* Reservation effects all target ports */
324 int pr_reg_all_tg_pt
;
325 /* Activate Persistence across Target Power Loss */
330 /* Used for fabric initiator WWPNs using a ISID */
331 bool isid_present_at_reg
;
332 u32 pr_res_mapped_lun
;
333 u32 pr_aptpl_target_lun
;
334 u32 pr_res_generation
;
337 atomic_t pr_res_holders
;
338 struct se_node_acl
*pr_reg_nacl
;
339 struct se_dev_entry
*pr_reg_deve
;
340 struct se_lun
*pr_reg_tg_pt_lun
;
341 struct list_head pr_reg_list
;
342 struct list_head pr_reg_abort_list
;
343 struct list_head pr_reg_aptpl_list
;
344 struct list_head pr_reg_atp_list
;
345 struct list_head pr_reg_atp_mem_list
;
346 } ____cacheline_aligned
;
349 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
350 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
351 * core_setup_reservations()
353 struct t10_reservation_ops
{
354 int (*t10_reservation_check
)(struct se_cmd
*, u32
*);
355 int (*t10_seq_non_holder
)(struct se_cmd
*, unsigned char *, u32
);
356 int (*t10_pr_register
)(struct se_cmd
*);
357 int (*t10_pr_clear
)(struct se_cmd
*);
360 struct t10_reservation
{
361 /* Reservation effects all target ports */
363 /* Activate Persistence across Target Power Loss enabled
366 /* Used by struct t10_reservation->pr_aptpl_buf_len */
367 #define PR_APTPL_BUF_LEN 8192
368 u32 pr_aptpl_buf_len
;
370 t10_reservations_index_t res_type
;
371 spinlock_t registration_lock
;
372 spinlock_t aptpl_reg_lock
;
374 * This will always be set by one individual I_T Nexus.
375 * However with all_tg_pt=1, other I_T Nexus from the
376 * same initiator can access PR reg/res info on a different
379 * There is also the 'All Registrants' case, where there is
380 * a single *pr_res_holder of the reservation, but all
381 * registrations are considered reservation holders.
383 struct se_node_acl
*pr_res_holder
;
384 struct list_head registration_list
;
385 struct list_head aptpl_reg_list
;
386 struct t10_reservation_ops pr_ops
;
387 } ____cacheline_aligned
;
389 struct se_queue_req
{
392 struct list_head qr_list
;
393 } ____cacheline_aligned
;
395 struct se_queue_obj
{
397 spinlock_t cmd_queue_lock
;
398 struct list_head qobj_list
;
399 wait_queue_head_t thread_wq
;
400 } ____cacheline_aligned
;
403 unsigned char task_sense
;
404 struct scatterlist
*task_sg
;
406 struct scatterlist
*task_sg_bidi
;
409 int task_error_status
;
410 int task_state_flags
;
412 unsigned long long task_lba
;
416 enum dma_data_direction task_data_direction
;
417 struct se_cmd
*task_se_cmd
;
418 struct se_device
*se_dev
;
419 struct completion task_stop_comp
;
420 atomic_t task_active
;
421 atomic_t task_execute_queue
;
422 atomic_t task_timeout
;
425 atomic_t task_state_active
;
426 struct timer_list task_timer
;
427 struct se_device
*se_obj_ptr
;
428 struct list_head t_list
;
429 struct list_head t_execute_list
;
430 struct list_head t_state_list
;
431 } ____cacheline_aligned
;
434 /* SAM response code being sent to initiator */
438 u8 scsi_sense_reason
;
439 u16 scsi_sense_length
;
440 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
441 int alua_nonop_delay
;
442 /* See include/linux/dma-mapping.h */
443 enum dma_data_direction data_direction
;
444 /* For SAM Task Attribute */
446 /* Transport protocol dependent state, see transport_state_table */
447 enum transport_state_table t_state
;
448 /* Transport protocol dependent state for out of order CmdSNs */
449 int deferred_t_state
;
450 /* Transport specific error status */
451 int transport_error_status
;
452 /* See se_cmd_flags_table */
455 /* Total size in bytes associated with command */
457 /* SCSI Presented Data Transfer Length */
461 /* Persistent Reservation key */
463 atomic_t transport_sent
;
464 /* Used for sense data */
466 struct list_head se_delayed_node
;
467 struct list_head se_ordered_node
;
468 struct list_head se_lun_node
;
469 struct se_device
*se_dev
;
470 struct se_dev_entry
*se_deve
;
471 struct se_device
*se_obj_ptr
;
472 struct se_device
*se_orig_obj_ptr
;
473 struct se_lun
*se_lun
;
474 /* Only used for internal passthrough and legacy TCM fabric modules */
475 struct se_session
*se_sess
;
476 struct se_tmr_req
*se_tmr_req
;
477 struct list_head se_queue_node
;
478 struct target_core_fabric_ops
*se_tfo
;
479 int (*transport_emulate_cdb
)(struct se_cmd
*);
480 void (*transport_split_cdb
)(unsigned long long, u32
*, unsigned char *);
481 void (*transport_wait_for_tasks
)(struct se_cmd
*, int, int);
482 void (*transport_complete_callback
)(struct se_cmd
*);
483 unsigned char *t_task_cdb
;
484 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
485 unsigned long long t_task_lba
;
490 u32 t_tasks_se_bidi_num
;
491 u32 t_tasks_sg_chained_no
;
494 atomic_t t_task_cdbs_left
;
495 atomic_t t_task_cdbs_ex_left
;
496 atomic_t t_task_cdbs_timeout_left
;
497 atomic_t t_task_cdbs_sent
;
498 atomic_t t_transport_aborted
;
499 atomic_t t_transport_active
;
500 atomic_t t_transport_complete
;
501 atomic_t t_transport_queue_active
;
502 atomic_t t_transport_sent
;
503 atomic_t t_transport_stop
;
504 atomic_t t_transport_timeout
;
505 atomic_t transport_dev_active
;
506 atomic_t transport_lun_active
;
507 atomic_t transport_lun_fe_stop
;
508 atomic_t transport_lun_stop
;
509 spinlock_t t_state_lock
;
510 struct completion t_transport_stop_comp
;
511 struct completion transport_lun_fe_stop_comp
;
512 struct completion transport_lun_stop_comp
;
513 struct scatterlist
*t_tasks_sg_chained
;
514 struct scatterlist t_tasks_sg_bounce
;
517 * Used for pre-registered fabric SGL passthrough WRITE and READ
518 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
519 * and other HW target mode fabric modules.
521 struct scatterlist
*t_task_pt_sgl
;
522 u32 t_task_pt_sgl_num
;
523 struct list_head t_mem_list
;
524 /* Used for BIDI READ */
525 struct list_head t_mem_bidi_list
;
526 struct list_head t_task_list
;
529 } ____cacheline_aligned
;
532 /* Task Management function to be preformed */
534 /* Task Management response to send */
537 /* Reference to ITT that Task Mgmt should be preformed */
539 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
541 void *fabric_tmr_ptr
;
542 struct se_cmd
*task_cmd
;
543 struct se_cmd
*ref_cmd
;
544 struct se_device
*tmr_dev
;
545 struct se_lun
*tmr_lun
;
546 struct list_head tmr_list
;
547 } ____cacheline_aligned
;
552 struct se_node_acl
*ua_nacl
;
553 struct list_head ua_dev_list
;
554 struct list_head ua_nacl_list
;
555 } ____cacheline_aligned
;
558 char initiatorname
[TRANSPORT_IQN_LEN
];
559 /* Used to signal demo mode created ACL, disabled by default */
560 bool dynamic_node_acl
;
566 spinlock_t stats_lock
;
567 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
568 atomic_t acl_pr_ref_count
;
569 struct se_dev_entry
*device_list
;
570 struct se_session
*nacl_sess
;
571 struct se_portal_group
*se_tpg
;
572 spinlock_t device_list_lock
;
573 spinlock_t nacl_sess_lock
;
574 struct config_group acl_group
;
575 struct config_group acl_attrib_group
;
576 struct config_group acl_auth_group
;
577 struct config_group acl_param_group
;
578 struct config_group acl_fabric_stat_group
;
579 struct config_group
*acl_default_groups
[5];
580 struct list_head acl_list
;
581 struct list_head acl_sess_list
;
582 } ____cacheline_aligned
;
586 struct se_node_acl
*se_node_acl
;
587 struct se_portal_group
*se_tpg
;
588 void *fabric_sess_ptr
;
589 struct list_head sess_list
;
590 struct list_head sess_acl_list
;
591 } ____cacheline_aligned
;
594 struct se_transform_info
;
597 struct se_ml_stat_grps
{
598 struct config_group stat_group
;
599 struct config_group scsi_auth_intr_group
;
600 struct config_group scsi_att_intr_port_group
;
604 char initiatorname
[TRANSPORT_IQN_LEN
];
606 struct se_node_acl
*se_lun_nacl
;
607 struct se_lun
*se_lun
;
608 struct list_head lacl_list
;
609 struct config_group se_lun_group
;
610 struct se_ml_stat_grps ml_stat_grps
;
611 } ____cacheline_aligned
;
613 struct se_dev_entry
{
614 bool def_pr_registered
;
615 /* See transport_lunflags_table */
629 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
630 atomic_t pr_ref_count
;
631 struct se_lun_acl
*se_lun_acl
;
633 struct se_lun
*se_lun
;
634 struct list_head alua_port_list
;
635 struct list_head ua_list
;
636 } ____cacheline_aligned
;
638 struct se_dev_limits
{
639 /* Max supported HW queue depth */
641 /* Max supported virtual queue depth */
643 /* From include/linux/blkdev.h for the other HW/SW limits. */
644 struct queue_limits limits
;
645 } ____cacheline_aligned
;
647 struct se_dev_attrib
{
649 int emulate_fua_write
;
650 int emulate_fua_read
;
651 int emulate_write_cache
;
652 int emulate_ua_intlck_ctrl
;
656 int emulate_reservations
;
658 int enforce_pr_isids
;
667 u32 max_unmap_lba_count
;
668 u32 max_unmap_block_desc_count
;
669 u32 unmap_granularity
;
670 u32 unmap_granularity_alignment
;
671 struct se_subsystem_dev
*da_sub_dev
;
672 struct config_group da_group
;
673 } ____cacheline_aligned
;
675 struct se_dev_stat_grps
{
676 struct config_group stat_group
;
677 struct config_group scsi_dev_group
;
678 struct config_group scsi_tgt_dev_group
;
679 struct config_group scsi_lu_group
;
682 struct se_subsystem_dev
{
683 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
684 #define SE_DEV_ALIAS_LEN 512
685 unsigned char se_dev_alias
[SE_DEV_ALIAS_LEN
];
686 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
687 #define SE_UDEV_PATH_LEN 512
688 unsigned char se_dev_udev_path
[SE_UDEV_PATH_LEN
];
690 struct se_hba
*se_dev_hba
;
691 struct se_device
*se_dev_ptr
;
692 struct se_dev_attrib se_dev_attrib
;
693 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
694 struct t10_alua t10_alua
;
695 /* T10 Inquiry and VPD WWN Information */
696 struct t10_wwn t10_wwn
;
697 /* T10 SPC-2 + SPC-3 Reservations */
698 struct t10_reservation t10_pr
;
699 spinlock_t se_dev_lock
;
701 struct list_head se_dev_node
;
702 struct config_group se_dev_group
;
703 /* For T10 Reservations */
704 struct config_group se_dev_pr_group
;
705 /* For target_core_stat.c groups */
706 struct se_dev_stat_grps dev_stat_grps
;
707 } ____cacheline_aligned
;
710 /* Set to 1 if thread is NOT sleeping on thread_sem */
712 u8 dev_status_timer_flags
;
713 /* RELATIVE TARGET PORT IDENTIFER Counter */
714 u16 dev_rpti_counter
;
715 /* Used for SAM Task Attribute ordering */
716 u32 dev_cur_ordered_id
;
719 /* See transport_device_status_table */
721 u32 dev_tcq_window_closed
;
722 /* Physical device queue depth */
724 /* Used for SPC-2 reservations enforce of ISIDs */
725 u64 dev_res_bin_isid
;
726 t10_task_attr_index_t dev_task_attr_type
;
727 /* Pointer to transport specific device structure */
735 spinlock_t stats_lock
;
736 /* Active commands on this virtual SE device */
737 atomic_t active_cmds
;
738 atomic_t simple_cmds
;
740 atomic_t dev_ordered_id
;
741 atomic_t dev_tur_active
;
742 atomic_t execute_tasks
;
743 atomic_t dev_status_thr_count
;
744 atomic_t dev_hoq_count
;
745 atomic_t dev_ordered_sync
;
746 struct se_obj dev_obj
;
747 struct se_obj dev_access_obj
;
748 struct se_obj dev_export_obj
;
749 struct se_queue_obj dev_queue_obj
;
750 spinlock_t delayed_cmd_lock
;
751 spinlock_t ordered_cmd_lock
;
752 spinlock_t execute_task_lock
;
753 spinlock_t state_task_lock
;
754 spinlock_t dev_alua_lock
;
755 spinlock_t dev_reservation_lock
;
756 spinlock_t dev_state_lock
;
757 spinlock_t dev_status_lock
;
758 spinlock_t dev_status_thr_lock
;
759 spinlock_t se_port_lock
;
760 spinlock_t se_tmr_lock
;
761 /* Used for legacy SPC-2 reservationsa */
762 struct se_node_acl
*dev_reserved_node_acl
;
763 /* Used for ALUA Logical Unit Group membership */
764 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
765 /* Used for SPC-3 Persistent Reservations */
766 struct t10_pr_registration
*dev_pr_res_holder
;
767 struct list_head dev_sep_list
;
768 struct list_head dev_tmr_list
;
769 struct timer_list dev_status_timer
;
770 /* Pointer to descriptor for processing thread */
771 struct task_struct
*process_thread
;
772 pid_t process_thread_pid
;
773 struct task_struct
*dev_mgmt_thread
;
774 struct list_head delayed_cmd_list
;
775 struct list_head ordered_cmd_list
;
776 struct list_head execute_task_list
;
777 struct list_head state_task_list
;
778 /* Pointer to associated SE HBA */
779 struct se_hba
*se_hba
;
780 struct se_subsystem_dev
*se_sub_dev
;
781 /* Pointer to template of function pointers for transport */
782 struct se_subsystem_api
*transport
;
783 /* Linked list for struct se_hba struct se_device list */
784 struct list_head dev_list
;
785 /* Linked list for struct se_global->g_se_dev_list */
786 struct list_head g_se_dev_list
;
787 } ____cacheline_aligned
;
792 /* See hba_flags_table */
794 /* Virtual iSCSI devices attached. */
797 /* Pointer to transport specific host structure. */
799 /* Linked list for struct se_device */
800 struct list_head hba_dev_list
;
801 struct list_head hba_node
;
802 spinlock_t device_lock
;
803 struct config_group hba_group
;
804 struct mutex hba_access_mutex
;
805 struct se_subsystem_api
*transport
;
806 } ____cacheline_aligned
;
808 struct se_port_stat_grps
{
809 struct config_group stat_group
;
810 struct config_group scsi_port_group
;
811 struct config_group scsi_tgt_port_group
;
812 struct config_group scsi_transport_group
;
816 /* See transport_lun_status_table */
817 enum transport_lun_status_table lun_status
;
821 atomic_t lun_acl_count
;
822 spinlock_t lun_acl_lock
;
823 spinlock_t lun_cmd_lock
;
824 spinlock_t lun_sep_lock
;
825 struct completion lun_shutdown_comp
;
826 struct list_head lun_cmd_list
;
827 struct list_head lun_acl_list
;
828 struct se_device
*lun_se_dev
;
829 struct se_port
*lun_sep
;
830 struct config_group lun_group
;
831 struct se_port_stat_grps port_stat_grps
;
832 } ____cacheline_aligned
;
834 struct scsi_port_stats
{
838 } ____cacheline_aligned
;
841 /* RELATIVE TARGET PORT IDENTIFER */
843 int sep_tg_pt_secondary_stat
;
844 int sep_tg_pt_secondary_write_md
;
846 struct scsi_port_stats sep_stats
;
847 /* Used for ALUA Target Port Groups membership */
848 atomic_t sep_tg_pt_gp_active
;
849 atomic_t sep_tg_pt_secondary_offline
;
850 /* Used for PR ALL_TG_PT=1 */
851 atomic_t sep_tg_pt_ref_cnt
;
852 spinlock_t sep_alua_lock
;
853 struct mutex sep_tg_pt_md_mutex
;
854 struct t10_alua_tg_pt_gp_member
*sep_alua_tg_pt_gp_mem
;
855 struct se_lun
*sep_lun
;
856 struct se_portal_group
*sep_tpg
;
857 struct list_head sep_alua_list
;
858 struct list_head sep_list
;
859 } ____cacheline_aligned
;
862 struct se_portal_group
*tpg_np_parent
;
863 struct config_group tpg_np_group
;
864 } ____cacheline_aligned
;
866 struct se_portal_group
{
867 /* Type of target portal group, see transport_tpg_type_table */
868 enum transport_tpg_type_table se_tpg_type
;
869 /* Number of ACLed Initiator Nodes for this TPG */
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 spinlock_t acl_node_lock
;
875 /* Spinlock for adding/removing sessions */
876 spinlock_t session_lock
;
877 spinlock_t tpg_lun_lock
;
878 /* Pointer to $FABRIC_MOD portal group */
879 void *se_tpg_fabric_ptr
;
880 struct list_head se_tpg_node
;
881 /* linked list for initiator ACL list */
882 struct list_head acl_node_list
;
883 struct se_lun
*tpg_lun_list
;
884 struct se_lun tpg_virt_lun0
;
885 /* List of TCM sessions associated wth this TPG */
886 struct list_head tpg_sess_list
;
887 /* Pointer to $FABRIC_MOD dependent code */
888 struct target_core_fabric_ops
*se_tpg_tfo
;
889 struct se_wwn
*se_tpg_wwn
;
890 struct config_group tpg_group
;
891 struct config_group
*tpg_default_groups
[6];
892 struct config_group tpg_lun_group
;
893 struct config_group tpg_np_group
;
894 struct config_group tpg_acl_group
;
895 struct config_group tpg_attrib_group
;
896 struct config_group tpg_param_group
;
897 } ____cacheline_aligned
;
900 struct target_fabric_configfs
*wwn_tf
;
901 struct config_group wwn_group
;
902 struct config_group
*wwn_default_groups
[2];
903 struct config_group fabric_stat_group
;
904 } ____cacheline_aligned
;
906 #endif /* TARGET_CORE_BASE_H */