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-rc2-ml"
13 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
15 /* Maximum Number of LUNs per Target Portal Group */
16 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
17 #define TRANSPORT_MAX_LUNS_PER_TPG 256
19 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
21 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
22 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
23 * 16-byte CDBs by default and require an extra allocation for
24 * 32-byte CDBs to because of legacy issues.
26 * Within TCM Core there are no such legacy limitiations, so we go ahead
27 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
28 * within all TCM Core and subsystem plugin code.
30 #define TCM_MAX_COMMAND_SIZE 32
32 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
33 * defined 96, but the real limit is 252 (or 260 including the header)
35 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
36 /* Used by transport_send_check_condition_and_sense() */
37 #define SPC_SENSE_KEY_OFFSET 2
38 #define SPC_ADD_SENSE_LEN_OFFSET 7
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 /* Attempts before moving from SHORT to LONG */
59 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
60 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
61 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
63 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
66 * struct se_subsystem_dev->su_dev_flags
68 #define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
69 #define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
70 #define SDF_USING_UDEV_PATH 0x00000004
71 #define SDF_USING_ALIAS 0x00000008
74 * struct se_device->dev_flags
76 #define DF_SPC2_RESERVATIONS 0x00000001
77 #define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
79 /* struct se_dev_attrib sanity values */
80 /* Default max_unmap_lba_count */
81 #define DA_MAX_UNMAP_LBA_COUNT 0
82 /* Default max_unmap_block_desc_count */
83 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
84 /* Default unmap_granularity */
85 #define DA_UNMAP_GRANULARITY_DEFAULT 0
86 /* Default unmap_granularity_alignment */
87 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
88 /* Default max transfer length */
89 #define DA_FABRIC_MAX_SECTORS 8192
90 /* Emulation for Direct Page Out */
91 #define DA_EMULATE_DPO 0
92 /* Emulation for Forced Unit Access WRITEs */
93 #define DA_EMULATE_FUA_WRITE 1
94 /* Emulation for Forced Unit Access READs */
95 #define DA_EMULATE_FUA_READ 0
96 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
97 #define DA_EMULATE_WRITE_CACHE 0
98 /* Emulation for UNIT ATTENTION Interlock Control */
99 #define DA_EMULATE_UA_INTLLCK_CTRL 0
100 /* Emulation for TASK_ABORTED status (TAS) by default */
101 #define DA_EMULATE_TAS 1
102 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
103 #define DA_EMULATE_TPU 0
105 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
106 * block/blk-lib.c:blkdev_issue_discard()
108 #define DA_EMULATE_TPWS 0
109 /* No Emulation for PSCSI by default */
110 #define DA_EMULATE_RESERVATIONS 0
111 /* No Emulation for PSCSI by default */
112 #define DA_EMULATE_ALUA 0
113 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
114 #define DA_ENFORCE_PR_ISIDS 1
115 #define DA_STATUS_MAX_SECTORS_MIN 16
116 #define DA_STATUS_MAX_SECTORS_MAX 8192
117 /* By default don't report non-rotating (solid state) medium */
118 #define DA_IS_NONROT 0
119 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
120 #define DA_EMULATE_REST_REORD 0
122 #define SE_INQUIRY_BUF 512
123 #define SE_MODE_PAGE_BUF 512
125 /* struct se_hba->hba_flags */
126 enum hba_flags_table
{
127 HBA_FLAGS_INTERNAL_USE
= 0x01,
128 HBA_FLAGS_PSCSI_MODE
= 0x02,
131 /* struct se_lun->lun_status */
132 enum transport_lun_status_table
{
133 TRANSPORT_LUN_STATUS_FREE
= 0,
134 TRANSPORT_LUN_STATUS_ACTIVE
= 1,
137 /* struct se_portal_group->se_tpg_type */
138 enum transport_tpg_type_table
{
139 TRANSPORT_TPG_TYPE_NORMAL
= 0,
140 TRANSPORT_TPG_TYPE_DISCOVERY
= 1,
143 /* Special transport agnostic struct se_cmd->t_states */
144 enum transport_state_table
{
145 TRANSPORT_NO_STATE
= 0,
146 TRANSPORT_NEW_CMD
= 1,
147 TRANSPORT_WRITE_PENDING
= 3,
148 TRANSPORT_PROCESS_WRITE
= 4,
149 TRANSPORT_PROCESSING
= 5,
150 TRANSPORT_COMPLETE
= 6,
151 TRANSPORT_PROCESS_TMR
= 9,
152 TRANSPORT_ISTATE_PROCESSING
= 11,
153 TRANSPORT_NEW_CMD_MAP
= 16,
154 TRANSPORT_COMPLETE_QF_WP
= 18,
155 TRANSPORT_COMPLETE_QF_OK
= 19,
158 /* Used for struct se_cmd->se_cmd_flags */
159 enum se_cmd_flags_table
{
160 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
161 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
162 SCF_EMULATED_TASK_SENSE
= 0x00000004,
163 SCF_SCSI_DATA_SG_IO_CDB
= 0x00000008,
164 SCF_SCSI_CONTROL_SG_IO_CDB
= 0x00000010,
165 SCF_SCSI_NON_DATA_CDB
= 0x00000020,
166 SCF_SCSI_TMR_CDB
= 0x00000040,
167 SCF_SCSI_CDB_EXCEPTION
= 0x00000080,
168 SCF_SCSI_RESERVATION_CONFLICT
= 0x00000100,
169 SCF_FUA
= 0x00000200,
170 SCF_SE_LUN_CMD
= 0x00000800,
171 SCF_SE_ALLOW_EOO
= 0x00001000,
172 SCF_BIDI
= 0x00002000,
173 SCF_SENT_CHECK_CONDITION
= 0x00004000,
174 SCF_OVERFLOW_BIT
= 0x00008000,
175 SCF_UNDERFLOW_BIT
= 0x00010000,
176 SCF_SENT_DELAYED_TAS
= 0x00020000,
177 SCF_ALUA_NON_OPTIMIZED
= 0x00040000,
178 SCF_DELAYED_CMD_FROM_SAM_ATTR
= 0x00080000,
179 SCF_UNUSED
= 0x00100000,
180 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00200000,
181 SCF_ACK_KREF
= 0x00400000,
184 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
185 enum transport_lunflags_table
{
186 TRANSPORT_LUNFLAGS_NO_ACCESS
= 0x00,
187 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
= 0x01,
188 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x02,
189 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x04,
192 /* struct se_device->dev_status */
193 enum transport_device_status_table
{
194 TRANSPORT_DEVICE_ACTIVATED
= 0x01,
195 TRANSPORT_DEVICE_DEACTIVATED
= 0x02,
196 TRANSPORT_DEVICE_QUEUE_FULL
= 0x04,
197 TRANSPORT_DEVICE_SHUTDOWN
= 0x08,
198 TRANSPORT_DEVICE_OFFLINE_ACTIVATED
= 0x10,
199 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED
= 0x20,
203 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
204 * to signal which ASC/ASCQ sense payload should be built.
206 enum tcm_sense_reason_table
{
207 TCM_NON_EXISTENT_LUN
= 0x01,
208 TCM_UNSUPPORTED_SCSI_OPCODE
= 0x02,
209 TCM_INCORRECT_AMOUNT_OF_DATA
= 0x03,
210 TCM_UNEXPECTED_UNSOLICITED_DATA
= 0x04,
211 TCM_SERVICE_CRC_ERROR
= 0x05,
212 TCM_SNACK_REJECTED
= 0x06,
213 TCM_SECTOR_COUNT_TOO_MANY
= 0x07,
214 TCM_INVALID_CDB_FIELD
= 0x08,
215 TCM_INVALID_PARAMETER_LIST
= 0x09,
216 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= 0x0a,
217 TCM_UNKNOWN_MODE_PAGE
= 0x0b,
218 TCM_WRITE_PROTECTED
= 0x0c,
219 TCM_CHECK_CONDITION_ABORT_CMD
= 0x0d,
220 TCM_CHECK_CONDITION_UNIT_ATTENTION
= 0x0e,
221 TCM_CHECK_CONDITION_NOT_READY
= 0x0f,
222 TCM_RESERVATION_CONFLICT
= 0x10,
225 enum target_sc_flags_table
{
226 TARGET_SCF_BIDI_OP
= 0x01,
227 TARGET_SCF_ACK_KREF
= 0x02,
228 TARGET_SCF_UNKNOWN_SIZE
= 0x04,
231 /* fabric independent task management function values */
232 enum tcm_tmreq_table
{
234 TMR_ABORT_TASK_SET
= 2,
236 TMR_CLEAR_TASK_SET
= 4,
238 TMR_TARGET_WARM_RESET
= 6,
239 TMR_TARGET_COLD_RESET
= 7,
240 TMR_FABRIC_TMR
= 255,
243 /* fabric independent task management response values */
244 enum tcm_tmrsp_table
{
245 TMR_FUNCTION_COMPLETE
= 0,
246 TMR_TASK_DOES_NOT_EXIST
= 1,
247 TMR_LUN_DOES_NOT_EXIST
= 2,
248 TMR_TASK_STILL_ALLEGIANT
= 3,
249 TMR_TASK_FAILOVER_NOT_SUPPORTED
= 4,
250 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED
= 5,
251 TMR_FUNCTION_AUTHORIZATION_FAILED
= 6,
252 TMR_FUNCTION_REJECTED
= 255,
256 atomic_t obj_access_count
;
260 * Used by TCM Core internally to signal if ALUA emulation is enabled or
261 * disabled, or running in with TCM/pSCSI passthrough mode
264 SPC_ALUA_PASSTHROUGH
,
270 * Used by TCM Core internally to signal if SAM Task Attribute emulation
271 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
274 SAM_TASK_ATTR_PASSTHROUGH
,
275 SAM_TASK_ATTR_UNTAGGED
,
276 SAM_TASK_ATTR_EMULATED
277 } t10_task_attr_index_t
;
280 * Used for target SCSI statistics
285 SCSI_AUTH_INTR_INDEX
,
292 t10_alua_index_t alua_type
;
293 /* ALUA Target Port Group ID */
294 u16 alua_tg_pt_gps_counter
;
295 u32 alua_tg_pt_gps_count
;
296 spinlock_t tg_pt_gps_lock
;
297 struct se_subsystem_dev
*t10_sub_dev
;
298 /* Used for default ALUA Target Port Group */
299 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
300 /* Used for default ALUA Target Port Group ConfigFS group */
301 struct config_group alua_tg_pt_gps_group
;
302 int (*alua_state_check
)(struct se_cmd
*, unsigned char *, u8
*);
303 struct list_head tg_pt_gps_list
;
306 struct t10_alua_lu_gp
{
310 atomic_t lu_gp_ref_cnt
;
311 spinlock_t lu_gp_lock
;
312 struct config_group lu_gp_group
;
313 struct list_head lu_gp_node
;
314 struct list_head lu_gp_mem_list
;
317 struct t10_alua_lu_gp_member
{
319 atomic_t lu_gp_mem_ref_cnt
;
320 spinlock_t lu_gp_mem_lock
;
321 struct t10_alua_lu_gp
*lu_gp
;
322 struct se_device
*lu_gp_mem_dev
;
323 struct list_head lu_gp_mem_list
;
326 struct t10_alua_tg_pt_gp
{
328 int tg_pt_gp_valid_id
;
329 int tg_pt_gp_alua_access_status
;
330 int tg_pt_gp_alua_access_type
;
331 int tg_pt_gp_nonop_delay_msecs
;
332 int tg_pt_gp_trans_delay_msecs
;
333 int tg_pt_gp_implict_trans_secs
;
335 int tg_pt_gp_write_metadata
;
336 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
337 #define ALUA_MD_BUF_LEN 1024
338 u32 tg_pt_gp_md_buf_len
;
339 u32 tg_pt_gp_members
;
340 atomic_t tg_pt_gp_alua_access_state
;
341 atomic_t tg_pt_gp_ref_cnt
;
342 spinlock_t tg_pt_gp_lock
;
343 struct mutex tg_pt_gp_md_mutex
;
344 struct se_subsystem_dev
*tg_pt_gp_su_dev
;
345 struct config_group tg_pt_gp_group
;
346 struct list_head tg_pt_gp_list
;
347 struct list_head tg_pt_gp_mem_list
;
350 struct t10_alua_tg_pt_gp_member
{
352 atomic_t tg_pt_gp_mem_ref_cnt
;
353 spinlock_t tg_pt_gp_mem_lock
;
354 struct t10_alua_tg_pt_gp
*tg_pt_gp
;
355 struct se_port
*tg_pt
;
356 struct list_head tg_pt_gp_mem_list
;
360 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
361 int protocol_identifier_set
;
362 u32 protocol_identifier
;
363 u32 device_identifier_code_set
;
365 u32 device_identifier_type
;
366 struct list_head vpd_list
;
373 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
374 spinlock_t t10_vpd_lock
;
375 struct se_subsystem_dev
*t10_sub_dev
;
376 struct config_group t10_wwn_group
;
377 struct list_head t10_vpd_list
;
382 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
383 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
389 SPC3_PERSISTENT_RESERVATIONS
390 } t10_reservations_index_t
;
392 struct t10_pr_registration
{
393 /* Used for fabrics that contain WWN+ISID */
394 #define PR_REG_ISID_LEN 16
395 /* PR_REG_ISID_LEN + ',i,0x' */
396 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
397 char pr_reg_isid
[PR_REG_ISID_LEN
];
398 /* Used during APTPL metadata reading */
399 #define PR_APTPL_MAX_IPORT_LEN 256
400 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
401 /* Used during APTPL metadata reading */
402 #define PR_APTPL_MAX_TPORT_LEN 256
403 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
404 /* For writing out live meta data */
405 unsigned char *pr_aptpl_buf
;
408 /* Reservation effects all target ports */
409 int pr_reg_all_tg_pt
;
410 /* Activate Persistence across Target Power Loss */
415 /* Used for fabric initiator WWPNs using a ISID */
416 bool isid_present_at_reg
;
417 u32 pr_res_mapped_lun
;
418 u32 pr_aptpl_target_lun
;
419 u32 pr_res_generation
;
422 atomic_t pr_res_holders
;
423 struct se_node_acl
*pr_reg_nacl
;
424 struct se_dev_entry
*pr_reg_deve
;
425 struct se_lun
*pr_reg_tg_pt_lun
;
426 struct list_head pr_reg_list
;
427 struct list_head pr_reg_abort_list
;
428 struct list_head pr_reg_aptpl_list
;
429 struct list_head pr_reg_atp_list
;
430 struct list_head pr_reg_atp_mem_list
;
434 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
435 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
436 * core_setup_reservations()
438 struct t10_reservation_ops
{
439 int (*t10_reservation_check
)(struct se_cmd
*, u32
*);
440 int (*t10_seq_non_holder
)(struct se_cmd
*, unsigned char *, u32
);
441 int (*t10_pr_register
)(struct se_cmd
*);
442 int (*t10_pr_clear
)(struct se_cmd
*);
445 struct t10_reservation
{
446 /* Reservation effects all target ports */
448 /* Activate Persistence across Target Power Loss enabled
451 /* Used by struct t10_reservation->pr_aptpl_buf_len */
452 #define PR_APTPL_BUF_LEN 8192
453 u32 pr_aptpl_buf_len
;
455 t10_reservations_index_t res_type
;
456 spinlock_t registration_lock
;
457 spinlock_t aptpl_reg_lock
;
459 * This will always be set by one individual I_T Nexus.
460 * However with all_tg_pt=1, other I_T Nexus from the
461 * same initiator can access PR reg/res info on a different
464 * There is also the 'All Registrants' case, where there is
465 * a single *pr_res_holder of the reservation, but all
466 * registrations are considered reservation holders.
468 struct se_node_acl
*pr_res_holder
;
469 struct list_head registration_list
;
470 struct list_head aptpl_reg_list
;
471 struct t10_reservation_ops pr_ops
;
474 struct se_queue_obj
{
476 spinlock_t cmd_queue_lock
;
477 struct list_head qobj_list
;
478 wait_queue_head_t thread_wq
;
482 /* Task Management function to be performed */
484 /* Task Management response to send */
487 /* Reference to ITT that Task Mgmt should be performed */
489 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
491 void *fabric_tmr_ptr
;
492 struct se_cmd
*task_cmd
;
493 struct se_cmd
*ref_cmd
;
494 struct se_device
*tmr_dev
;
495 struct se_lun
*tmr_lun
;
496 struct list_head tmr_list
;
500 /* SAM response code being sent to initiator */
504 u8 scsi_sense_reason
;
505 u16 scsi_sense_length
;
506 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
507 int alua_nonop_delay
;
508 /* See include/linux/dma-mapping.h */
509 enum dma_data_direction data_direction
;
510 /* For SAM Task Attribute */
512 /* Transport protocol dependent state, see transport_state_table */
513 enum transport_state_table t_state
;
514 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
515 unsigned check_release
:1;
516 unsigned cmd_wait_set
:1;
517 unsigned unknown_data_length
:1;
518 /* See se_cmd_flags_table */
521 /* Total size in bytes associated with command */
523 /* SCSI Presented Data Transfer Length */
527 /* Persistent Reservation key */
529 /* Used for sense data */
531 struct list_head se_delayed_node
;
532 struct list_head se_lun_node
;
533 struct list_head se_qf_node
;
534 struct se_device
*se_dev
;
535 struct se_dev_entry
*se_deve
;
536 struct se_lun
*se_lun
;
537 /* Only used for internal passthrough and legacy TCM fabric modules */
538 struct se_session
*se_sess
;
539 struct se_tmr_req
*se_tmr_req
;
540 struct list_head se_queue_node
;
541 struct list_head se_cmd_list
;
542 struct completion cmd_wait_comp
;
543 struct kref cmd_kref
;
544 struct target_core_fabric_ops
*se_tfo
;
545 int (*execute_cmd
)(struct se_cmd
*);
546 void (*transport_complete_callback
)(struct se_cmd
*);
548 unsigned char *t_task_cdb
;
549 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
550 unsigned long long t_task_lba
;
552 unsigned int transport_state
;
553 #define CMD_T_ABORTED (1 << 0)
554 #define CMD_T_ACTIVE (1 << 1)
555 #define CMD_T_COMPLETE (1 << 2)
556 #define CMD_T_QUEUED (1 << 3)
557 #define CMD_T_SENT (1 << 4)
558 #define CMD_T_STOP (1 << 5)
559 #define CMD_T_FAILED (1 << 6)
560 #define CMD_T_LUN_STOP (1 << 7)
561 #define CMD_T_LUN_FE_STOP (1 << 8)
562 #define CMD_T_DEV_ACTIVE (1 << 9)
563 #define CMD_T_REQUEST_STOP (1 << 10)
564 #define CMD_T_BUSY (1 << 11)
565 spinlock_t t_state_lock
;
566 struct completion t_transport_stop_comp
;
567 struct completion transport_lun_fe_stop_comp
;
568 struct completion transport_lun_stop_comp
;
570 struct work_struct work
;
572 struct scatterlist
*t_data_sg
;
573 unsigned int t_data_nents
;
575 struct scatterlist
*t_bidi_data_sg
;
576 unsigned int t_bidi_data_nents
;
578 struct list_head execute_list
;
579 struct list_head state_list
;
582 /* old task stop completion, consider merging with some of the above */
583 struct completion task_stop_comp
;
585 /* backend private data */
592 struct se_node_acl
*ua_nacl
;
593 struct list_head ua_dev_list
;
594 struct list_head ua_nacl_list
;
598 char initiatorname
[TRANSPORT_IQN_LEN
];
599 /* Used to signal demo mode created ACL, disabled by default */
600 bool dynamic_node_acl
;
607 spinlock_t stats_lock
;
608 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
609 atomic_t acl_pr_ref_count
;
610 struct se_dev_entry
**device_list
;
611 struct se_session
*nacl_sess
;
612 struct se_portal_group
*se_tpg
;
613 spinlock_t device_list_lock
;
614 spinlock_t nacl_sess_lock
;
615 struct config_group acl_group
;
616 struct config_group acl_attrib_group
;
617 struct config_group acl_auth_group
;
618 struct config_group acl_param_group
;
619 struct config_group acl_fabric_stat_group
;
620 struct config_group
*acl_default_groups
[5];
621 struct list_head acl_list
;
622 struct list_head acl_sess_list
;
623 struct completion acl_free_comp
;
624 struct kref acl_kref
;
628 unsigned sess_tearing_down
:1;
630 struct se_node_acl
*se_node_acl
;
631 struct se_portal_group
*se_tpg
;
632 void *fabric_sess_ptr
;
633 struct list_head sess_list
;
634 struct list_head sess_acl_list
;
635 struct list_head sess_cmd_list
;
636 struct list_head sess_wait_list
;
637 spinlock_t sess_cmd_lock
;
638 struct kref sess_kref
;
642 struct se_transform_info
;
645 struct se_ml_stat_grps
{
646 struct config_group stat_group
;
647 struct config_group scsi_auth_intr_group
;
648 struct config_group scsi_att_intr_port_group
;
652 char initiatorname
[TRANSPORT_IQN_LEN
];
654 struct se_node_acl
*se_lun_nacl
;
655 struct se_lun
*se_lun
;
656 struct list_head lacl_list
;
657 struct config_group se_lun_group
;
658 struct se_ml_stat_grps ml_stat_grps
;
661 struct se_dev_entry
{
662 bool def_pr_registered
;
663 /* See transport_lunflags_table */
677 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
678 atomic_t pr_ref_count
;
679 struct se_lun_acl
*se_lun_acl
;
681 struct se_lun
*se_lun
;
682 struct list_head alua_port_list
;
683 struct list_head ua_list
;
686 struct se_dev_limits
{
687 /* Max supported HW queue depth */
689 /* Max supported virtual queue depth */
691 /* From include/linux/blkdev.h for the other HW/SW limits. */
692 struct queue_limits limits
;
695 struct se_dev_attrib
{
697 int emulate_fua_write
;
698 int emulate_fua_read
;
699 int emulate_write_cache
;
700 int emulate_ua_intlck_ctrl
;
704 int emulate_reservations
;
706 int enforce_pr_isids
;
708 int emulate_rest_reord
;
712 u32 fabric_max_sectors
;
716 u32 max_unmap_lba_count
;
717 u32 max_unmap_block_desc_count
;
718 u32 unmap_granularity
;
719 u32 unmap_granularity_alignment
;
720 struct se_subsystem_dev
*da_sub_dev
;
721 struct config_group da_group
;
724 struct se_dev_stat_grps
{
725 struct config_group stat_group
;
726 struct config_group scsi_dev_group
;
727 struct config_group scsi_tgt_dev_group
;
728 struct config_group scsi_lu_group
;
731 struct se_subsystem_dev
{
732 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
733 #define SE_DEV_ALIAS_LEN 512
734 unsigned char se_dev_alias
[SE_DEV_ALIAS_LEN
];
735 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
736 #define SE_UDEV_PATH_LEN 512
737 unsigned char se_dev_udev_path
[SE_UDEV_PATH_LEN
];
739 struct se_hba
*se_dev_hba
;
740 struct se_device
*se_dev_ptr
;
741 struct se_dev_attrib se_dev_attrib
;
742 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
743 struct t10_alua t10_alua
;
744 /* T10 Inquiry and VPD WWN Information */
745 struct t10_wwn t10_wwn
;
746 /* T10 SPC-2 + SPC-3 Reservations */
747 struct t10_reservation t10_pr
;
748 spinlock_t se_dev_lock
;
750 struct config_group se_dev_group
;
751 /* For T10 Reservations */
752 struct config_group se_dev_pr_group
;
753 /* For target_core_stat.c groups */
754 struct se_dev_stat_grps dev_stat_grps
;
758 /* RELATIVE TARGET PORT IDENTIFER Counter */
759 u16 dev_rpti_counter
;
760 /* Used for SAM Task Attribute ordering */
761 u32 dev_cur_ordered_id
;
764 /* See transport_device_status_table */
766 /* Physical device queue depth */
768 /* Used for SPC-2 reservations enforce of ISIDs */
769 u64 dev_res_bin_isid
;
770 t10_task_attr_index_t dev_task_attr_type
;
771 /* Pointer to transport specific device structure */
779 spinlock_t stats_lock
;
780 /* Active commands on this virtual SE device */
781 atomic_t simple_cmds
;
782 atomic_t dev_ordered_id
;
783 atomic_t execute_tasks
;
784 atomic_t dev_ordered_sync
;
785 atomic_t dev_qf_count
;
786 struct se_obj dev_obj
;
787 struct se_obj dev_access_obj
;
788 struct se_obj dev_export_obj
;
789 struct se_queue_obj dev_queue_obj
;
790 spinlock_t delayed_cmd_lock
;
791 spinlock_t execute_task_lock
;
792 spinlock_t dev_reservation_lock
;
793 spinlock_t dev_status_lock
;
794 spinlock_t se_port_lock
;
795 spinlock_t se_tmr_lock
;
796 spinlock_t qf_cmd_lock
;
797 /* Used for legacy SPC-2 reservationsa */
798 struct se_node_acl
*dev_reserved_node_acl
;
799 /* Used for ALUA Logical Unit Group membership */
800 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
801 /* Used for SPC-3 Persistent Reservations */
802 struct t10_pr_registration
*dev_pr_res_holder
;
803 struct list_head dev_sep_list
;
804 struct list_head dev_tmr_list
;
805 /* Pointer to descriptor for processing thread */
806 struct task_struct
*process_thread
;
807 struct work_struct qf_work_queue
;
808 struct list_head delayed_cmd_list
;
809 struct list_head execute_list
;
810 struct list_head state_list
;
811 struct list_head qf_cmd_list
;
812 /* Pointer to associated SE HBA */
813 struct se_hba
*se_hba
;
814 struct se_subsystem_dev
*se_sub_dev
;
815 /* Pointer to template of function pointers for transport */
816 struct se_subsystem_api
*transport
;
817 /* Linked list for struct se_hba struct se_device list */
818 struct list_head dev_list
;
824 /* See hba_flags_table */
826 /* Virtual iSCSI devices attached. */
829 /* Pointer to transport specific host structure. */
831 /* Linked list for struct se_device */
832 struct list_head hba_dev_list
;
833 struct list_head hba_node
;
834 spinlock_t device_lock
;
835 struct config_group hba_group
;
836 struct mutex hba_access_mutex
;
837 struct se_subsystem_api
*transport
;
840 struct se_port_stat_grps
{
841 struct config_group stat_group
;
842 struct config_group scsi_port_group
;
843 struct config_group scsi_tgt_port_group
;
844 struct config_group scsi_transport_group
;
848 /* See transport_lun_status_table */
849 enum transport_lun_status_table lun_status
;
853 atomic_t lun_acl_count
;
854 spinlock_t lun_acl_lock
;
855 spinlock_t lun_cmd_lock
;
856 spinlock_t lun_sep_lock
;
857 struct completion lun_shutdown_comp
;
858 struct list_head lun_cmd_list
;
859 struct list_head lun_acl_list
;
860 struct se_device
*lun_se_dev
;
861 struct se_port
*lun_sep
;
862 struct config_group lun_group
;
863 struct se_port_stat_grps port_stat_grps
;
866 struct scsi_port_stats
{
873 /* RELATIVE TARGET PORT IDENTIFER */
875 int sep_tg_pt_secondary_stat
;
876 int sep_tg_pt_secondary_write_md
;
878 struct scsi_port_stats sep_stats
;
879 /* Used for ALUA Target Port Groups membership */
880 atomic_t sep_tg_pt_secondary_offline
;
881 /* Used for PR ALL_TG_PT=1 */
882 atomic_t sep_tg_pt_ref_cnt
;
883 spinlock_t sep_alua_lock
;
884 struct mutex sep_tg_pt_md_mutex
;
885 struct t10_alua_tg_pt_gp_member
*sep_alua_tg_pt_gp_mem
;
886 struct se_lun
*sep_lun
;
887 struct se_portal_group
*sep_tpg
;
888 struct list_head sep_alua_list
;
889 struct list_head sep_list
;
893 struct se_portal_group
*tpg_np_parent
;
894 struct config_group tpg_np_group
;
897 struct se_portal_group
{
898 /* Type of target portal group, see transport_tpg_type_table */
899 enum transport_tpg_type_table se_tpg_type
;
900 /* Number of ACLed Initiator Nodes for this TPG */
902 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
903 atomic_t tpg_pr_ref_count
;
904 /* Spinlock for adding/removing ACLed Nodes */
905 spinlock_t acl_node_lock
;
906 /* Spinlock for adding/removing sessions */
907 spinlock_t session_lock
;
908 spinlock_t tpg_lun_lock
;
909 /* Pointer to $FABRIC_MOD portal group */
910 void *se_tpg_fabric_ptr
;
911 struct list_head se_tpg_node
;
912 /* linked list for initiator ACL list */
913 struct list_head acl_node_list
;
914 struct se_lun
**tpg_lun_list
;
915 struct se_lun tpg_virt_lun0
;
916 /* List of TCM sessions associated wth this TPG */
917 struct list_head tpg_sess_list
;
918 /* Pointer to $FABRIC_MOD dependent code */
919 struct target_core_fabric_ops
*se_tpg_tfo
;
920 struct se_wwn
*se_tpg_wwn
;
921 struct config_group tpg_group
;
922 struct config_group
*tpg_default_groups
[6];
923 struct config_group tpg_lun_group
;
924 struct config_group tpg_np_group
;
925 struct config_group tpg_acl_group
;
926 struct config_group tpg_attrib_group
;
927 struct config_group tpg_param_group
;
931 struct target_fabric_configfs
*wwn_tf
;
932 struct config_group wwn_group
;
933 struct config_group
*wwn_default_groups
[2];
934 struct config_group fabric_stat_group
;
937 #endif /* TARGET_CORE_BASE_H */