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 "v4.1.0-rc1-ml"
14 /* Maximum Number of LUNs per Target Portal Group */
15 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
16 #define TRANSPORT_MAX_LUNS_PER_TPG 256
18 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
20 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
21 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
22 * 16-byte CDBs by default and require an extra allocation for
23 * 32-byte CDBs to because of legacy issues.
25 * Within TCM Core there are no such legacy limitiations, so we go ahead
26 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
27 * within all TCM Core and subsystem plugin code.
29 #define TCM_MAX_COMMAND_SIZE 32
31 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
32 * defined 96, but the real limit is 252 (or 260 including the header)
34 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
35 /* Used by transport_send_check_condition_and_sense() */
36 #define SPC_SENSE_KEY_OFFSET 2
37 #define SPC_ADD_SENSE_LEN_OFFSET 7
38 #define SPC_ASC_KEY_OFFSET 12
39 #define SPC_ASCQ_KEY_OFFSET 13
40 #define TRANSPORT_IQN_LEN 224
41 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
42 #define LU_GROUP_NAME_BUF 256
43 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
44 #define TG_PT_GROUP_NAME_BUF 256
45 /* Used to parse VPD into struct t10_vpd */
46 #define VPD_TMP_BUF_SIZE 128
47 /* Used by transport_generic_cmd_sequencer() */
48 #define READ_BLOCK_LEN 6
49 #define READ_CAP_LEN 8
50 #define READ_POSITION_LEN 20
51 #define INQUIRY_LEN 36
52 /* Used by transport_get_inquiry_vpd_serial() */
53 #define INQUIRY_VPD_SERIAL_LEN 254
54 /* Used by transport_get_inquiry_vpd_device_ident() */
55 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
57 /* struct se_hba->hba_flags */
58 enum hba_flags_table
{
59 HBA_FLAGS_INTERNAL_USE
= 0x01,
60 HBA_FLAGS_PSCSI_MODE
= 0x02,
63 /* struct se_lun->lun_status */
64 enum transport_lun_status_table
{
65 TRANSPORT_LUN_STATUS_FREE
= 0,
66 TRANSPORT_LUN_STATUS_ACTIVE
= 1,
69 /* struct se_portal_group->se_tpg_type */
70 enum transport_tpg_type_table
{
71 TRANSPORT_TPG_TYPE_NORMAL
= 0,
72 TRANSPORT_TPG_TYPE_DISCOVERY
= 1,
75 /* Used for generate timer flags */
79 TF_REQUEST_STOP
= (1 << 2),
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_WRITE_PENDING
= 3,
87 TRANSPORT_PROCESS_WRITE
= 4,
88 TRANSPORT_PROCESSING
= 5,
89 TRANSPORT_COMPLETE
= 6,
90 TRANSPORT_PROCESS_TMR
= 9,
91 TRANSPORT_ISTATE_PROCESSING
= 11,
92 TRANSPORT_NEW_CMD_MAP
= 16,
93 TRANSPORT_COMPLETE_QF_WP
= 18,
94 TRANSPORT_COMPLETE_QF_OK
= 19,
97 /* Used for struct se_cmd->se_cmd_flags */
98 enum se_cmd_flags_table
{
99 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
100 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
101 SCF_EMULATED_TASK_SENSE
= 0x00000004,
102 SCF_SCSI_DATA_SG_IO_CDB
= 0x00000008,
103 SCF_SCSI_CONTROL_SG_IO_CDB
= 0x00000010,
104 SCF_SCSI_NON_DATA_CDB
= 0x00000040,
105 SCF_SCSI_CDB_EXCEPTION
= 0x00000080,
106 SCF_SCSI_RESERVATION_CONFLICT
= 0x00000100,
107 SCF_FUA
= 0x00000200,
108 SCF_SE_LUN_CMD
= 0x00000800,
109 SCF_SE_ALLOW_EOO
= 0x00001000,
110 SCF_BIDI
= 0x00002000,
111 SCF_SENT_CHECK_CONDITION
= 0x00004000,
112 SCF_OVERFLOW_BIT
= 0x00008000,
113 SCF_UNDERFLOW_BIT
= 0x00010000,
114 SCF_SENT_DELAYED_TAS
= 0x00020000,
115 SCF_ALUA_NON_OPTIMIZED
= 0x00040000,
116 SCF_DELAYED_CMD_FROM_SAM_ATTR
= 0x00080000,
117 SCF_UNUSED
= 0x00100000,
118 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00400000,
121 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
122 enum transport_lunflags_table
{
123 TRANSPORT_LUNFLAGS_NO_ACCESS
= 0x00,
124 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
= 0x01,
125 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x02,
126 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x04,
129 /* struct se_device->dev_status */
130 enum transport_device_status_table
{
131 TRANSPORT_DEVICE_ACTIVATED
= 0x01,
132 TRANSPORT_DEVICE_DEACTIVATED
= 0x02,
133 TRANSPORT_DEVICE_QUEUE_FULL
= 0x04,
134 TRANSPORT_DEVICE_SHUTDOWN
= 0x08,
135 TRANSPORT_DEVICE_OFFLINE_ACTIVATED
= 0x10,
136 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED
= 0x20,
140 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
141 * to signal which ASC/ASCQ sense payload should be built.
143 enum tcm_sense_reason_table
{
144 TCM_NON_EXISTENT_LUN
= 0x01,
145 TCM_UNSUPPORTED_SCSI_OPCODE
= 0x02,
146 TCM_INCORRECT_AMOUNT_OF_DATA
= 0x03,
147 TCM_UNEXPECTED_UNSOLICITED_DATA
= 0x04,
148 TCM_SERVICE_CRC_ERROR
= 0x05,
149 TCM_SNACK_REJECTED
= 0x06,
150 TCM_SECTOR_COUNT_TOO_MANY
= 0x07,
151 TCM_INVALID_CDB_FIELD
= 0x08,
152 TCM_INVALID_PARAMETER_LIST
= 0x09,
153 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= 0x0a,
154 TCM_UNKNOWN_MODE_PAGE
= 0x0b,
155 TCM_WRITE_PROTECTED
= 0x0c,
156 TCM_CHECK_CONDITION_ABORT_CMD
= 0x0d,
157 TCM_CHECK_CONDITION_UNIT_ATTENTION
= 0x0e,
158 TCM_CHECK_CONDITION_NOT_READY
= 0x0f,
159 TCM_RESERVATION_CONFLICT
= 0x10,
163 atomic_t obj_access_count
;
164 } ____cacheline_aligned
;
167 * Used by TCM Core internally to signal if ALUA emulation is enabled or
168 * disabled, or running in with TCM/pSCSI passthrough mode
171 SPC_ALUA_PASSTHROUGH
,
177 * Used by TCM Core internally to signal if SAM Task Attribute emulation
178 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
181 SAM_TASK_ATTR_PASSTHROUGH
,
182 SAM_TASK_ATTR_UNTAGGED
,
183 SAM_TASK_ATTR_EMULATED
184 } t10_task_attr_index_t
;
187 * Used for target SCSI statistics
192 SCSI_AUTH_INTR_INDEX
,
199 t10_alua_index_t alua_type
;
200 /* ALUA Target Port Group ID */
201 u16 alua_tg_pt_gps_counter
;
202 u32 alua_tg_pt_gps_count
;
203 spinlock_t tg_pt_gps_lock
;
204 struct se_subsystem_dev
*t10_sub_dev
;
205 /* Used for default ALUA Target Port Group */
206 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
207 /* Used for default ALUA Target Port Group ConfigFS group */
208 struct config_group alua_tg_pt_gps_group
;
209 int (*alua_state_check
)(struct se_cmd
*, unsigned char *, u8
*);
210 struct list_head tg_pt_gps_list
;
211 } ____cacheline_aligned
;
213 struct t10_alua_lu_gp
{
217 atomic_t lu_gp_ref_cnt
;
218 spinlock_t lu_gp_lock
;
219 struct config_group lu_gp_group
;
220 struct list_head lu_gp_node
;
221 struct list_head lu_gp_mem_list
;
222 } ____cacheline_aligned
;
224 struct t10_alua_lu_gp_member
{
226 atomic_t lu_gp_mem_ref_cnt
;
227 spinlock_t lu_gp_mem_lock
;
228 struct t10_alua_lu_gp
*lu_gp
;
229 struct se_device
*lu_gp_mem_dev
;
230 struct list_head lu_gp_mem_list
;
231 } ____cacheline_aligned
;
233 struct t10_alua_tg_pt_gp
{
235 int tg_pt_gp_valid_id
;
236 int tg_pt_gp_alua_access_status
;
237 int tg_pt_gp_alua_access_type
;
238 int tg_pt_gp_nonop_delay_msecs
;
239 int tg_pt_gp_trans_delay_msecs
;
241 int tg_pt_gp_write_metadata
;
242 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
243 #define ALUA_MD_BUF_LEN 1024
244 u32 tg_pt_gp_md_buf_len
;
245 u32 tg_pt_gp_members
;
246 atomic_t tg_pt_gp_alua_access_state
;
247 atomic_t tg_pt_gp_ref_cnt
;
248 spinlock_t tg_pt_gp_lock
;
249 struct mutex tg_pt_gp_md_mutex
;
250 struct se_subsystem_dev
*tg_pt_gp_su_dev
;
251 struct config_group tg_pt_gp_group
;
252 struct list_head tg_pt_gp_list
;
253 struct list_head tg_pt_gp_mem_list
;
254 } ____cacheline_aligned
;
256 struct t10_alua_tg_pt_gp_member
{
258 atomic_t tg_pt_gp_mem_ref_cnt
;
259 spinlock_t tg_pt_gp_mem_lock
;
260 struct t10_alua_tg_pt_gp
*tg_pt_gp
;
261 struct se_port
*tg_pt
;
262 struct list_head tg_pt_gp_mem_list
;
263 } ____cacheline_aligned
;
266 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
267 int protocol_identifier_set
;
268 u32 protocol_identifier
;
269 u32 device_identifier_code_set
;
271 u32 device_identifier_type
;
272 struct list_head vpd_list
;
273 } ____cacheline_aligned
;
279 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
280 spinlock_t t10_vpd_lock
;
281 struct se_subsystem_dev
*t10_sub_dev
;
282 struct config_group t10_wwn_group
;
283 struct list_head t10_vpd_list
;
284 } ____cacheline_aligned
;
288 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
289 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
295 SPC3_PERSISTENT_RESERVATIONS
296 } t10_reservations_index_t
;
298 struct t10_pr_registration
{
299 /* Used for fabrics that contain WWN+ISID */
300 #define PR_REG_ISID_LEN 16
301 /* PR_REG_ISID_LEN + ',i,0x' */
302 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
303 char pr_reg_isid
[PR_REG_ISID_LEN
];
304 /* Used during APTPL metadata reading */
305 #define PR_APTPL_MAX_IPORT_LEN 256
306 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
307 /* Used during APTPL metadata reading */
308 #define PR_APTPL_MAX_TPORT_LEN 256
309 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
310 /* For writing out live meta data */
311 unsigned char *pr_aptpl_buf
;
314 /* Reservation effects all target ports */
315 int pr_reg_all_tg_pt
;
316 /* Activate Persistence across Target Power Loss */
321 /* Used for fabric initiator WWPNs using a ISID */
322 bool isid_present_at_reg
;
323 u32 pr_res_mapped_lun
;
324 u32 pr_aptpl_target_lun
;
325 u32 pr_res_generation
;
328 atomic_t pr_res_holders
;
329 struct se_node_acl
*pr_reg_nacl
;
330 struct se_dev_entry
*pr_reg_deve
;
331 struct se_lun
*pr_reg_tg_pt_lun
;
332 struct list_head pr_reg_list
;
333 struct list_head pr_reg_abort_list
;
334 struct list_head pr_reg_aptpl_list
;
335 struct list_head pr_reg_atp_list
;
336 struct list_head pr_reg_atp_mem_list
;
337 } ____cacheline_aligned
;
340 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
341 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
342 * core_setup_reservations()
344 struct t10_reservation_ops
{
345 int (*t10_reservation_check
)(struct se_cmd
*, u32
*);
346 int (*t10_seq_non_holder
)(struct se_cmd
*, unsigned char *, u32
);
347 int (*t10_pr_register
)(struct se_cmd
*);
348 int (*t10_pr_clear
)(struct se_cmd
*);
351 struct t10_reservation
{
352 /* Reservation effects all target ports */
354 /* Activate Persistence across Target Power Loss enabled
357 /* Used by struct t10_reservation->pr_aptpl_buf_len */
358 #define PR_APTPL_BUF_LEN 8192
359 u32 pr_aptpl_buf_len
;
361 t10_reservations_index_t res_type
;
362 spinlock_t registration_lock
;
363 spinlock_t aptpl_reg_lock
;
365 * This will always be set by one individual I_T Nexus.
366 * However with all_tg_pt=1, other I_T Nexus from the
367 * same initiator can access PR reg/res info on a different
370 * There is also the 'All Registrants' case, where there is
371 * a single *pr_res_holder of the reservation, but all
372 * registrations are considered reservation holders.
374 struct se_node_acl
*pr_res_holder
;
375 struct list_head registration_list
;
376 struct list_head aptpl_reg_list
;
377 struct t10_reservation_ops pr_ops
;
378 } ____cacheline_aligned
;
380 struct se_queue_req
{
383 struct list_head qr_list
;
384 } ____cacheline_aligned
;
386 struct se_queue_obj
{
388 spinlock_t cmd_queue_lock
;
389 struct list_head qobj_list
;
390 wait_queue_head_t thread_wq
;
391 } ____cacheline_aligned
;
394 unsigned long long task_lba
;
397 struct se_cmd
*task_se_cmd
;
398 struct scatterlist
*task_sg
;
403 int task_error_status
;
404 enum dma_data_direction task_data_direction
;
405 atomic_t task_state_active
;
406 struct list_head t_list
;
407 struct list_head t_execute_list
;
408 struct list_head t_state_list
;
409 struct completion task_stop_comp
;
410 } ____cacheline_aligned
;
413 /* SAM response code being sent to initiator */
417 u8 scsi_sense_reason
;
418 u16 scsi_sense_length
;
419 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
420 int alua_nonop_delay
;
421 /* See include/linux/dma-mapping.h */
422 enum dma_data_direction data_direction
;
423 /* For SAM Task Attribute */
425 /* Transport protocol dependent state, see transport_state_table */
426 enum transport_state_table t_state
;
427 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
428 unsigned check_release
:1;
429 unsigned cmd_wait_set
:1;
430 /* See se_cmd_flags_table */
433 /* Total size in bytes associated with command */
435 /* SCSI Presented Data Transfer Length */
439 /* Persistent Reservation key */
441 /* Used for sense data */
443 struct list_head se_delayed_node
;
444 struct list_head se_lun_node
;
445 struct list_head se_qf_node
;
446 struct se_device
*se_dev
;
447 struct se_dev_entry
*se_deve
;
448 struct se_lun
*se_lun
;
449 /* Only used for internal passthrough and legacy TCM fabric modules */
450 struct se_session
*se_sess
;
451 struct se_tmr_req
*se_tmr_req
;
452 struct list_head se_queue_node
;
453 struct list_head se_cmd_list
;
454 struct completion cmd_wait_comp
;
455 struct target_core_fabric_ops
*se_tfo
;
456 int (*execute_task
)(struct se_task
*);
457 void (*transport_complete_callback
)(struct se_cmd
*);
459 unsigned char *t_task_cdb
;
460 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
461 unsigned long long t_task_lba
;
463 u32 t_tasks_sg_chained_no
;
466 atomic_t t_task_cdbs_left
;
467 atomic_t t_task_cdbs_ex_left
;
468 atomic_t t_task_cdbs_sent
;
469 atomic_t t_transport_aborted
;
470 atomic_t t_transport_active
;
471 atomic_t t_transport_complete
;
472 atomic_t t_transport_queue_active
;
473 atomic_t t_transport_sent
;
474 atomic_t t_transport_stop
;
475 atomic_t transport_dev_active
;
476 atomic_t transport_lun_active
;
477 atomic_t transport_lun_fe_stop
;
478 atomic_t transport_lun_stop
;
479 spinlock_t t_state_lock
;
480 struct completion t_transport_stop_comp
;
481 struct completion transport_lun_fe_stop_comp
;
482 struct completion transport_lun_stop_comp
;
483 struct scatterlist
*t_tasks_sg_chained
;
485 struct work_struct work
;
487 struct scatterlist
*t_data_sg
;
488 unsigned int t_data_nents
;
489 struct scatterlist
*t_bidi_data_sg
;
490 unsigned int t_bidi_data_nents
;
492 /* Used for BIDI READ */
493 struct list_head t_task_list
;
496 } ____cacheline_aligned
;
499 /* Task Management function to be preformed */
501 /* Task Management response to send */
504 /* Reference to ITT that Task Mgmt should be preformed */
506 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
508 void *fabric_tmr_ptr
;
509 struct se_cmd
*task_cmd
;
510 struct se_cmd
*ref_cmd
;
511 struct se_device
*tmr_dev
;
512 struct se_lun
*tmr_lun
;
513 struct list_head tmr_list
;
514 } ____cacheline_aligned
;
519 struct se_node_acl
*ua_nacl
;
520 struct list_head ua_dev_list
;
521 struct list_head ua_nacl_list
;
522 } ____cacheline_aligned
;
525 char initiatorname
[TRANSPORT_IQN_LEN
];
526 /* Used to signal demo mode created ACL, disabled by default */
527 bool dynamic_node_acl
;
533 spinlock_t stats_lock
;
534 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
535 atomic_t acl_pr_ref_count
;
536 struct se_dev_entry
*device_list
;
537 struct se_session
*nacl_sess
;
538 struct se_portal_group
*se_tpg
;
539 spinlock_t device_list_lock
;
540 spinlock_t nacl_sess_lock
;
541 struct config_group acl_group
;
542 struct config_group acl_attrib_group
;
543 struct config_group acl_auth_group
;
544 struct config_group acl_param_group
;
545 struct config_group acl_fabric_stat_group
;
546 struct config_group
*acl_default_groups
[5];
547 struct list_head acl_list
;
548 struct list_head acl_sess_list
;
549 } ____cacheline_aligned
;
552 unsigned sess_tearing_down
:1;
554 struct se_node_acl
*se_node_acl
;
555 struct se_portal_group
*se_tpg
;
556 void *fabric_sess_ptr
;
557 struct list_head sess_list
;
558 struct list_head sess_acl_list
;
559 struct list_head sess_cmd_list
;
560 struct list_head sess_wait_list
;
561 spinlock_t sess_cmd_lock
;
562 } ____cacheline_aligned
;
565 struct se_transform_info
;
568 struct se_ml_stat_grps
{
569 struct config_group stat_group
;
570 struct config_group scsi_auth_intr_group
;
571 struct config_group scsi_att_intr_port_group
;
575 char initiatorname
[TRANSPORT_IQN_LEN
];
577 struct se_node_acl
*se_lun_nacl
;
578 struct se_lun
*se_lun
;
579 struct list_head lacl_list
;
580 struct config_group se_lun_group
;
581 struct se_ml_stat_grps ml_stat_grps
;
582 } ____cacheline_aligned
;
584 struct se_dev_entry
{
585 bool def_pr_registered
;
586 /* See transport_lunflags_table */
600 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
601 atomic_t pr_ref_count
;
602 struct se_lun_acl
*se_lun_acl
;
604 struct se_lun
*se_lun
;
605 struct list_head alua_port_list
;
606 struct list_head ua_list
;
607 } ____cacheline_aligned
;
609 struct se_dev_limits
{
610 /* Max supported HW queue depth */
612 /* Max supported virtual queue depth */
614 /* From include/linux/blkdev.h for the other HW/SW limits. */
615 struct queue_limits limits
;
616 } ____cacheline_aligned
;
618 struct se_dev_attrib
{
620 int emulate_fua_write
;
621 int emulate_fua_read
;
622 int emulate_write_cache
;
623 int emulate_ua_intlck_ctrl
;
627 int emulate_reservations
;
629 int enforce_pr_isids
;
631 int emulate_rest_reord
;
639 u32 max_unmap_lba_count
;
640 u32 max_unmap_block_desc_count
;
641 u32 unmap_granularity
;
642 u32 unmap_granularity_alignment
;
643 struct se_subsystem_dev
*da_sub_dev
;
644 struct config_group da_group
;
645 } ____cacheline_aligned
;
647 struct se_dev_stat_grps
{
648 struct config_group stat_group
;
649 struct config_group scsi_dev_group
;
650 struct config_group scsi_tgt_dev_group
;
651 struct config_group scsi_lu_group
;
654 struct se_subsystem_dev
{
655 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
656 #define SE_DEV_ALIAS_LEN 512
657 unsigned char se_dev_alias
[SE_DEV_ALIAS_LEN
];
658 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
659 #define SE_UDEV_PATH_LEN 512
660 unsigned char se_dev_udev_path
[SE_UDEV_PATH_LEN
];
662 struct se_hba
*se_dev_hba
;
663 struct se_device
*se_dev_ptr
;
664 struct se_dev_attrib se_dev_attrib
;
665 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
666 struct t10_alua t10_alua
;
667 /* T10 Inquiry and VPD WWN Information */
668 struct t10_wwn t10_wwn
;
669 /* T10 SPC-2 + SPC-3 Reservations */
670 struct t10_reservation t10_pr
;
671 spinlock_t se_dev_lock
;
673 struct config_group se_dev_group
;
674 /* For T10 Reservations */
675 struct config_group se_dev_pr_group
;
676 /* For target_core_stat.c groups */
677 struct se_dev_stat_grps dev_stat_grps
;
678 } ____cacheline_aligned
;
681 /* RELATIVE TARGET PORT IDENTIFER Counter */
682 u16 dev_rpti_counter
;
683 /* Used for SAM Task Attribute ordering */
684 u32 dev_cur_ordered_id
;
687 /* See transport_device_status_table */
689 u32 dev_tcq_window_closed
;
690 /* Physical device queue depth */
692 /* Used for SPC-2 reservations enforce of ISIDs */
693 u64 dev_res_bin_isid
;
694 t10_task_attr_index_t dev_task_attr_type
;
695 /* Pointer to transport specific device structure */
703 spinlock_t stats_lock
;
704 /* Active commands on this virtual SE device */
705 atomic_t simple_cmds
;
707 atomic_t dev_ordered_id
;
708 atomic_t execute_tasks
;
709 atomic_t dev_ordered_sync
;
710 atomic_t dev_qf_count
;
711 struct se_obj dev_obj
;
712 struct se_obj dev_access_obj
;
713 struct se_obj dev_export_obj
;
714 struct se_queue_obj dev_queue_obj
;
715 spinlock_t delayed_cmd_lock
;
716 spinlock_t execute_task_lock
;
717 spinlock_t dev_reservation_lock
;
718 spinlock_t dev_status_lock
;
719 spinlock_t se_port_lock
;
720 spinlock_t se_tmr_lock
;
721 spinlock_t qf_cmd_lock
;
722 /* Used for legacy SPC-2 reservationsa */
723 struct se_node_acl
*dev_reserved_node_acl
;
724 /* Used for ALUA Logical Unit Group membership */
725 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
726 /* Used for SPC-3 Persistent Reservations */
727 struct t10_pr_registration
*dev_pr_res_holder
;
728 struct list_head dev_sep_list
;
729 struct list_head dev_tmr_list
;
730 /* Pointer to descriptor for processing thread */
731 struct task_struct
*process_thread
;
732 struct work_struct qf_work_queue
;
733 struct list_head delayed_cmd_list
;
734 struct list_head execute_task_list
;
735 struct list_head state_task_list
;
736 struct list_head qf_cmd_list
;
737 /* Pointer to associated SE HBA */
738 struct se_hba
*se_hba
;
739 struct se_subsystem_dev
*se_sub_dev
;
740 /* Pointer to template of function pointers for transport */
741 struct se_subsystem_api
*transport
;
742 /* Linked list for struct se_hba struct se_device list */
743 struct list_head dev_list
;
744 } ____cacheline_aligned
;
749 /* See hba_flags_table */
751 /* Virtual iSCSI devices attached. */
754 /* Pointer to transport specific host structure. */
756 /* Linked list for struct se_device */
757 struct list_head hba_dev_list
;
758 struct list_head hba_node
;
759 spinlock_t device_lock
;
760 struct config_group hba_group
;
761 struct mutex hba_access_mutex
;
762 struct se_subsystem_api
*transport
;
763 } ____cacheline_aligned
;
765 struct se_port_stat_grps
{
766 struct config_group stat_group
;
767 struct config_group scsi_port_group
;
768 struct config_group scsi_tgt_port_group
;
769 struct config_group scsi_transport_group
;
773 /* See transport_lun_status_table */
774 enum transport_lun_status_table lun_status
;
778 atomic_t lun_acl_count
;
779 spinlock_t lun_acl_lock
;
780 spinlock_t lun_cmd_lock
;
781 spinlock_t lun_sep_lock
;
782 struct completion lun_shutdown_comp
;
783 struct list_head lun_cmd_list
;
784 struct list_head lun_acl_list
;
785 struct se_device
*lun_se_dev
;
786 struct se_port
*lun_sep
;
787 struct config_group lun_group
;
788 struct se_port_stat_grps port_stat_grps
;
789 } ____cacheline_aligned
;
791 struct scsi_port_stats
{
795 } ____cacheline_aligned
;
798 /* RELATIVE TARGET PORT IDENTIFER */
800 int sep_tg_pt_secondary_stat
;
801 int sep_tg_pt_secondary_write_md
;
803 struct scsi_port_stats sep_stats
;
804 /* Used for ALUA Target Port Groups membership */
805 atomic_t sep_tg_pt_secondary_offline
;
806 /* Used for PR ALL_TG_PT=1 */
807 atomic_t sep_tg_pt_ref_cnt
;
808 spinlock_t sep_alua_lock
;
809 struct mutex sep_tg_pt_md_mutex
;
810 struct t10_alua_tg_pt_gp_member
*sep_alua_tg_pt_gp_mem
;
811 struct se_lun
*sep_lun
;
812 struct se_portal_group
*sep_tpg
;
813 struct list_head sep_alua_list
;
814 struct list_head sep_list
;
815 } ____cacheline_aligned
;
818 struct se_portal_group
*tpg_np_parent
;
819 struct config_group tpg_np_group
;
820 } ____cacheline_aligned
;
822 struct se_portal_group
{
823 /* Type of target portal group, see transport_tpg_type_table */
824 enum transport_tpg_type_table se_tpg_type
;
825 /* Number of ACLed Initiator Nodes for this TPG */
827 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
828 atomic_t tpg_pr_ref_count
;
829 /* Spinlock for adding/removing ACLed Nodes */
830 spinlock_t acl_node_lock
;
831 /* Spinlock for adding/removing sessions */
832 spinlock_t session_lock
;
833 spinlock_t tpg_lun_lock
;
834 /* Pointer to $FABRIC_MOD portal group */
835 void *se_tpg_fabric_ptr
;
836 struct list_head se_tpg_node
;
837 /* linked list for initiator ACL list */
838 struct list_head acl_node_list
;
839 struct se_lun
*tpg_lun_list
;
840 struct se_lun tpg_virt_lun0
;
841 /* List of TCM sessions associated wth this TPG */
842 struct list_head tpg_sess_list
;
843 /* Pointer to $FABRIC_MOD dependent code */
844 struct target_core_fabric_ops
*se_tpg_tfo
;
845 struct se_wwn
*se_tpg_wwn
;
846 struct config_group tpg_group
;
847 struct config_group
*tpg_default_groups
[6];
848 struct config_group tpg_lun_group
;
849 struct config_group tpg_np_group
;
850 struct config_group tpg_acl_group
;
851 struct config_group tpg_attrib_group
;
852 struct config_group tpg_param_group
;
853 } ____cacheline_aligned
;
856 struct target_fabric_configfs
*wwn_tf
;
857 struct config_group wwn_group
;
858 struct config_group
*wwn_default_groups
[2];
859 struct config_group fabric_stat_group
;
860 } ____cacheline_aligned
;
862 #endif /* TARGET_CORE_BASE_H */