1 #ifndef TARGET_CORE_BASE_H
2 #define TARGET_CORE_BASE_H
5 #include <linux/configfs.h>
6 #include <linux/dma-mapping.h>
7 #include <linux/blkdev.h>
8 #include <linux/percpu_ida.h>
12 #define TARGET_CORE_MOD_VERSION "v4.1.0"
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 * Maximum size of a CDB that can be stored in se_cmd without allocating
20 * memory dynamically for the CDB.
22 #define TCM_MAX_COMMAND_SIZE 32
24 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
25 * defined 96, but the real limit is 252 (or 260 including the header)
27 #define TRANSPORT_SENSE_BUFFER 96
28 /* Used by transport_send_check_condition_and_sense() */
29 #define SPC_SENSE_KEY_OFFSET 2
30 #define SPC_ADD_SENSE_LEN_OFFSET 7
31 #define SPC_DESC_TYPE_OFFSET 8
32 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
33 #define SPC_VALIDITY_OFFSET 10
34 #define SPC_ASC_KEY_OFFSET 12
35 #define SPC_ASCQ_KEY_OFFSET 13
36 #define TRANSPORT_IQN_LEN 224
37 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
38 #define LU_GROUP_NAME_BUF 256
39 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
40 #define TG_PT_GROUP_NAME_BUF 256
41 /* Used to parse VPD into struct t10_vpd */
42 #define VPD_TMP_BUF_SIZE 254
43 /* Used by transport_generic_cmd_sequencer() */
44 #define READ_BLOCK_LEN 6
45 #define READ_CAP_LEN 8
46 #define READ_POSITION_LEN 20
47 #define INQUIRY_LEN 36
48 /* Used by transport_get_inquiry_vpd_serial() */
49 #define INQUIRY_VPD_SERIAL_LEN 254
50 /* Used by transport_get_inquiry_vpd_device_ident() */
51 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
53 /* Attempts before moving from SHORT to LONG */
54 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
55 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
56 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
58 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
60 /* struct se_dev_attrib sanity values */
61 /* Default max_unmap_lba_count */
62 #define DA_MAX_UNMAP_LBA_COUNT 0
63 /* Default max_unmap_block_desc_count */
64 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
65 /* Default unmap_granularity */
66 #define DA_UNMAP_GRANULARITY_DEFAULT 0
67 /* Default unmap_granularity_alignment */
68 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
69 /* Default max_write_same_len, disabled by default */
70 #define DA_MAX_WRITE_SAME_LEN 0
71 /* Use a model alias based on the configfs backend device name */
72 #define DA_EMULATE_MODEL_ALIAS 0
73 /* Emulation for Direct Page Out */
74 #define DA_EMULATE_DPO 0
75 /* Emulation for Forced Unit Access WRITEs */
76 #define DA_EMULATE_FUA_WRITE 1
77 /* Emulation for Forced Unit Access READs */
78 #define DA_EMULATE_FUA_READ 0
79 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
80 #define DA_EMULATE_WRITE_CACHE 0
81 /* Emulation for UNIT ATTENTION Interlock Control */
82 #define DA_EMULATE_UA_INTLLCK_CTRL 0
83 /* Emulation for TASK_ABORTED status (TAS) by default */
84 #define DA_EMULATE_TAS 1
85 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
86 #define DA_EMULATE_TPU 0
88 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
89 * block/blk-lib.c:blkdev_issue_discard()
91 #define DA_EMULATE_TPWS 0
92 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
93 #define DA_EMULATE_CAW 1
94 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
95 #define DA_EMULATE_3PC 1
96 /* No Emulation for PSCSI by default */
97 #define DA_EMULATE_ALUA 0
98 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
99 #define DA_ENFORCE_PR_ISIDS 1
100 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
101 #define DA_FORCE_PR_APTPL 0
102 #define DA_STATUS_MAX_SECTORS_MIN 16
103 #define DA_STATUS_MAX_SECTORS_MAX 8192
104 /* By default don't report non-rotating (solid state) medium */
105 #define DA_IS_NONROT 0
106 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
107 #define DA_EMULATE_REST_REORD 0
109 #define SE_INQUIRY_BUF 1024
110 #define SE_MODE_PAGE_BUF 512
111 #define SE_SENSE_BUF 96
113 /* struct se_hba->hba_flags */
114 enum hba_flags_table
{
115 HBA_FLAGS_INTERNAL_USE
= 0x01,
116 HBA_FLAGS_PSCSI_MODE
= 0x02,
119 /* struct se_lun->lun_status */
120 enum transport_lun_status_table
{
121 TRANSPORT_LUN_STATUS_FREE
= 0,
122 TRANSPORT_LUN_STATUS_ACTIVE
= 1,
125 /* struct se_portal_group->se_tpg_type */
126 enum transport_tpg_type_table
{
127 TRANSPORT_TPG_TYPE_NORMAL
= 0,
128 TRANSPORT_TPG_TYPE_DISCOVERY
= 1,
131 /* Special transport agnostic struct se_cmd->t_states */
132 enum transport_state_table
{
133 TRANSPORT_NO_STATE
= 0,
134 TRANSPORT_NEW_CMD
= 1,
135 TRANSPORT_WRITE_PENDING
= 3,
136 TRANSPORT_PROCESSING
= 5,
137 TRANSPORT_COMPLETE
= 6,
138 TRANSPORT_ISTATE_PROCESSING
= 11,
139 TRANSPORT_COMPLETE_QF_WP
= 18,
140 TRANSPORT_COMPLETE_QF_OK
= 19,
143 /* Used for struct se_cmd->se_cmd_flags */
144 enum se_cmd_flags_table
{
145 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
146 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
147 SCF_EMULATED_TASK_SENSE
= 0x00000004,
148 SCF_SCSI_DATA_CDB
= 0x00000008,
149 SCF_SCSI_TMR_CDB
= 0x00000010,
150 SCF_FUA
= 0x00000080,
151 SCF_SE_LUN_CMD
= 0x00000100,
152 SCF_BIDI
= 0x00000400,
153 SCF_SENT_CHECK_CONDITION
= 0x00000800,
154 SCF_OVERFLOW_BIT
= 0x00001000,
155 SCF_UNDERFLOW_BIT
= 0x00002000,
156 SCF_SEND_DELAYED_TAS
= 0x00004000,
157 SCF_ALUA_NON_OPTIMIZED
= 0x00008000,
158 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00020000,
159 SCF_COMPARE_AND_WRITE
= 0x00080000,
160 SCF_COMPARE_AND_WRITE_POST
= 0x00100000,
163 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
164 enum transport_lunflags_table
{
165 TRANSPORT_LUNFLAGS_NO_ACCESS
= 0x00,
166 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
= 0x01,
167 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x02,
168 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x04,
172 * Used by transport_send_check_condition_and_sense()
173 * to signal which ASC/ASCQ sense payload should be built.
175 typedef unsigned __bitwise__ sense_reason_t
;
177 enum tcm_sense_reason_table
{
178 #define R(x) (__force sense_reason_t )(x)
179 TCM_NO_SENSE
= R(0x00),
180 TCM_NON_EXISTENT_LUN
= R(0x01),
181 TCM_UNSUPPORTED_SCSI_OPCODE
= R(0x02),
182 TCM_INCORRECT_AMOUNT_OF_DATA
= R(0x03),
183 TCM_UNEXPECTED_UNSOLICITED_DATA
= R(0x04),
184 TCM_SERVICE_CRC_ERROR
= R(0x05),
185 TCM_SNACK_REJECTED
= R(0x06),
186 TCM_SECTOR_COUNT_TOO_MANY
= R(0x07),
187 TCM_INVALID_CDB_FIELD
= R(0x08),
188 TCM_INVALID_PARAMETER_LIST
= R(0x09),
189 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= R(0x0a),
190 TCM_UNKNOWN_MODE_PAGE
= R(0x0b),
191 TCM_WRITE_PROTECTED
= R(0x0c),
192 TCM_CHECK_CONDITION_ABORT_CMD
= R(0x0d),
193 TCM_CHECK_CONDITION_UNIT_ATTENTION
= R(0x0e),
194 TCM_CHECK_CONDITION_NOT_READY
= R(0x0f),
195 TCM_RESERVATION_CONFLICT
= R(0x10),
196 TCM_ADDRESS_OUT_OF_RANGE
= R(0x11),
197 TCM_OUT_OF_RESOURCES
= R(0x12),
198 TCM_PARAMETER_LIST_LENGTH_ERROR
= R(0x13),
199 TCM_MISCOMPARE_VERIFY
= R(0x14),
200 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED
= R(0x15),
201 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED
= R(0x16),
202 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED
= R(0x17),
206 enum target_sc_flags_table
{
207 TARGET_SCF_BIDI_OP
= 0x01,
208 TARGET_SCF_ACK_KREF
= 0x02,
209 TARGET_SCF_UNKNOWN_SIZE
= 0x04,
212 /* fabric independent task management function values */
213 enum tcm_tmreq_table
{
215 TMR_ABORT_TASK_SET
= 2,
217 TMR_CLEAR_TASK_SET
= 4,
219 TMR_TARGET_WARM_RESET
= 6,
220 TMR_TARGET_COLD_RESET
= 7,
223 /* fabric independent task management response values */
224 enum tcm_tmrsp_table
{
225 TMR_FUNCTION_FAILED
= 0,
226 TMR_FUNCTION_COMPLETE
= 1,
227 TMR_TASK_DOES_NOT_EXIST
= 2,
228 TMR_LUN_DOES_NOT_EXIST
= 3,
229 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED
= 4,
230 TMR_FUNCTION_REJECTED
= 5,
234 * Used for target SCSI statistics
239 SCSI_AUTH_INTR_INDEX
,
245 struct t10_alua_lba_map_member
{
246 struct list_head lba_map_mem_list
;
247 int lba_map_mem_alua_state
;
248 int lba_map_mem_alua_pg_id
;
251 struct t10_alua_lba_map
{
252 u64 lba_map_first_lba
;
253 u64 lba_map_last_lba
;
254 struct list_head lba_map_list
;
255 struct list_head lba_map_mem_list
;
259 /* ALUA Target Port Group ID */
260 u16 alua_tg_pt_gps_counter
;
261 u32 alua_tg_pt_gps_count
;
262 /* Referrals support */
263 spinlock_t lba_map_lock
;
264 u32 lba_map_segment_size
;
265 u32 lba_map_segment_multiplier
;
266 struct list_head lba_map_list
;
267 spinlock_t tg_pt_gps_lock
;
268 struct se_device
*t10_dev
;
269 /* Used for default ALUA Target Port Group */
270 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
271 /* Used for default ALUA Target Port Group ConfigFS group */
272 struct config_group alua_tg_pt_gps_group
;
273 struct list_head tg_pt_gps_list
;
276 struct t10_alua_lu_gp
{
280 atomic_t lu_gp_ref_cnt
;
281 spinlock_t lu_gp_lock
;
282 struct config_group lu_gp_group
;
283 struct list_head lu_gp_node
;
284 struct list_head lu_gp_mem_list
;
287 struct t10_alua_lu_gp_member
{
289 atomic_t lu_gp_mem_ref_cnt
;
290 spinlock_t lu_gp_mem_lock
;
291 struct t10_alua_lu_gp
*lu_gp
;
292 struct se_device
*lu_gp_mem_dev
;
293 struct list_head lu_gp_mem_list
;
296 struct t10_alua_tg_pt_gp
{
298 int tg_pt_gp_valid_id
;
299 int tg_pt_gp_alua_supported_states
;
300 int tg_pt_gp_alua_pending_state
;
301 int tg_pt_gp_alua_previous_state
;
302 int tg_pt_gp_alua_access_status
;
303 int tg_pt_gp_alua_access_type
;
304 int tg_pt_gp_nonop_delay_msecs
;
305 int tg_pt_gp_trans_delay_msecs
;
306 int tg_pt_gp_implicit_trans_secs
;
308 int tg_pt_gp_write_metadata
;
309 u32 tg_pt_gp_members
;
310 atomic_t tg_pt_gp_alua_access_state
;
311 atomic_t tg_pt_gp_ref_cnt
;
312 spinlock_t tg_pt_gp_lock
;
313 struct mutex tg_pt_gp_md_mutex
;
314 struct se_device
*tg_pt_gp_dev
;
315 struct config_group tg_pt_gp_group
;
316 struct list_head tg_pt_gp_list
;
317 struct list_head tg_pt_gp_mem_list
;
318 struct se_port
*tg_pt_gp_alua_port
;
319 struct se_node_acl
*tg_pt_gp_alua_nacl
;
320 struct delayed_work tg_pt_gp_transition_work
;
321 struct completion
*tg_pt_gp_transition_complete
;
324 struct t10_alua_tg_pt_gp_member
{
326 atomic_t tg_pt_gp_mem_ref_cnt
;
327 spinlock_t tg_pt_gp_mem_lock
;
328 struct t10_alua_tg_pt_gp
*tg_pt_gp
;
329 struct se_port
*tg_pt
;
330 struct list_head tg_pt_gp_mem_list
;
334 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
335 int protocol_identifier_set
;
336 u32 protocol_identifier
;
337 u32 device_identifier_code_set
;
339 u32 device_identifier_type
;
340 struct list_head vpd_list
;
347 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
348 spinlock_t t10_vpd_lock
;
349 struct se_device
*t10_dev
;
350 struct config_group t10_wwn_group
;
351 struct list_head t10_vpd_list
;
354 struct t10_pr_registration
{
355 /* Used for fabrics that contain WWN+ISID */
356 #define PR_REG_ISID_LEN 16
357 /* PR_REG_ISID_LEN + ',i,0x' */
358 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
359 char pr_reg_isid
[PR_REG_ISID_LEN
];
360 /* Used during APTPL metadata reading */
361 #define PR_APTPL_MAX_IPORT_LEN 256
362 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
363 /* Used during APTPL metadata reading */
364 #define PR_APTPL_MAX_TPORT_LEN 256
365 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
368 /* Reservation effects all target ports */
369 int pr_reg_all_tg_pt
;
370 /* Activate Persistence across Target Power Loss */
375 /* Used for fabric initiator WWPNs using a ISID */
376 bool isid_present_at_reg
;
377 u32 pr_res_mapped_lun
;
378 u32 pr_aptpl_target_lun
;
379 u32 pr_res_generation
;
382 atomic_t pr_res_holders
;
383 struct se_node_acl
*pr_reg_nacl
;
384 struct se_dev_entry
*pr_reg_deve
;
385 struct se_lun
*pr_reg_tg_pt_lun
;
386 struct list_head pr_reg_list
;
387 struct list_head pr_reg_abort_list
;
388 struct list_head pr_reg_aptpl_list
;
389 struct list_head pr_reg_atp_list
;
390 struct list_head pr_reg_atp_mem_list
;
393 struct t10_reservation
{
394 /* Reservation effects all target ports */
396 /* Activate Persistence across Target Power Loss enabled
399 #define PR_APTPL_BUF_LEN 262144
401 spinlock_t registration_lock
;
402 spinlock_t aptpl_reg_lock
;
404 * This will always be set by one individual I_T Nexus.
405 * However with all_tg_pt=1, other I_T Nexus from the
406 * same initiator can access PR reg/res info on a different
409 * There is also the 'All Registrants' case, where there is
410 * a single *pr_res_holder of the reservation, but all
411 * registrations are considered reservation holders.
413 struct se_node_acl
*pr_res_holder
;
414 struct list_head registration_list
;
415 struct list_head aptpl_reg_list
;
419 /* Task Management function to be performed */
421 /* Task Management response to send */
424 /* Reference to ITT that Task Mgmt should be performed */
426 void *fabric_tmr_ptr
;
427 struct se_cmd
*task_cmd
;
428 struct se_device
*tmr_dev
;
429 struct se_lun
*tmr_lun
;
430 struct list_head tmr_list
;
433 enum target_prot_op
{
434 TARGET_PROT_NORMAL
= 0,
435 TARGET_PROT_DIN_INSERT
= (1 << 0),
436 TARGET_PROT_DOUT_INSERT
= (1 << 1),
437 TARGET_PROT_DIN_STRIP
= (1 << 2),
438 TARGET_PROT_DOUT_STRIP
= (1 << 3),
439 TARGET_PROT_DIN_PASS
= (1 << 4),
440 TARGET_PROT_DOUT_PASS
= (1 << 5),
443 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
444 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
445 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
447 enum target_prot_type
{
448 TARGET_DIF_TYPE0_PROT
,
449 TARGET_DIF_TYPE1_PROT
,
450 TARGET_DIF_TYPE2_PROT
,
451 TARGET_DIF_TYPE3_PROT
,
454 enum target_core_dif_check
{
455 TARGET_DIF_CHECK_GUARD
= 0x1 << 0,
456 TARGET_DIF_CHECK_APPTAG
= 0x1 << 1,
457 TARGET_DIF_CHECK_REFTAG
= 0x1 << 2,
460 struct se_dif_v1_tuple
{
466 /* for sam_task_attr */
467 #define TCM_SIMPLE_TAG 0x20
468 #define TCM_HEAD_TAG 0x21
469 #define TCM_ORDERED_TAG 0x22
470 #define TCM_ACA_TAG 0x24
473 /* SAM response code being sent to initiator */
477 u16 scsi_sense_length
;
478 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
479 int alua_nonop_delay
;
480 /* See include/linux/dma-mapping.h */
481 enum dma_data_direction data_direction
;
482 /* For SAM Task Attribute */
484 /* Used for se_sess->sess_tag_pool */
485 unsigned int map_tag
;
486 /* Transport protocol dependent state, see transport_state_table */
487 enum transport_state_table t_state
;
488 unsigned cmd_wait_set
:1;
489 unsigned unknown_data_length
:1;
490 /* See se_cmd_flags_table */
493 /* Total size in bytes associated with command */
497 /* Persistent Reservation key */
499 /* Used for sense data */
501 struct list_head se_delayed_node
;
502 struct list_head se_qf_node
;
503 struct se_device
*se_dev
;
504 struct se_dev_entry
*se_deve
;
505 struct se_lun
*se_lun
;
506 /* Only used for internal passthrough and legacy TCM fabric modules */
507 struct se_session
*se_sess
;
508 struct se_tmr_req
*se_tmr_req
;
509 struct list_head se_cmd_list
;
510 struct completion cmd_wait_comp
;
511 struct kref cmd_kref
;
512 const struct target_core_fabric_ops
*se_tfo
;
513 sense_reason_t (*execute_cmd
)(struct se_cmd
*);
514 sense_reason_t (*execute_rw
)(struct se_cmd
*, struct scatterlist
*,
515 u32
, enum dma_data_direction
);
516 sense_reason_t (*transport_complete_callback
)(struct se_cmd
*, bool);
518 unsigned char *t_task_cdb
;
519 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
520 unsigned long long t_task_lba
;
521 unsigned int t_task_nolb
;
522 unsigned int transport_state
;
523 #define CMD_T_ABORTED (1 << 0)
524 #define CMD_T_ACTIVE (1 << 1)
525 #define CMD_T_COMPLETE (1 << 2)
526 #define CMD_T_SENT (1 << 4)
527 #define CMD_T_STOP (1 << 5)
528 #define CMD_T_DEV_ACTIVE (1 << 7)
529 #define CMD_T_REQUEST_STOP (1 << 8)
530 #define CMD_T_BUSY (1 << 9)
531 spinlock_t t_state_lock
;
532 struct completion t_transport_stop_comp
;
534 struct work_struct work
;
536 struct scatterlist
*t_data_sg
;
537 struct scatterlist
*t_data_sg_orig
;
538 unsigned int t_data_nents
;
539 unsigned int t_data_nents_orig
;
541 struct scatterlist
*t_bidi_data_sg
;
542 unsigned int t_bidi_data_nents
;
544 struct list_head state_list
;
547 /* old task stop completion, consider merging with some of the above */
548 struct completion task_stop_comp
;
550 /* backend private data */
553 /* Used for lun->lun_ref counting */
556 /* DIF related members */
557 enum target_prot_op prot_op
;
558 enum target_prot_type prot_type
;
562 struct scatterlist
*t_prot_sg
;
563 unsigned int t_prot_nents
;
564 sense_reason_t pi_err
;
572 struct se_node_acl
*ua_nacl
;
573 struct list_head ua_nacl_list
;
577 char initiatorname
[TRANSPORT_IQN_LEN
];
578 /* Used to signal demo mode created ACL, disabled by default */
579 bool dynamic_node_acl
;
583 enum target_prot_type saved_prot_type
;
584 #define MAX_ACL_TAG_SIZE 64
585 char acl_tag
[MAX_ACL_TAG_SIZE
];
586 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
587 atomic_t acl_pr_ref_count
;
588 struct se_dev_entry
**device_list
;
589 struct se_session
*nacl_sess
;
590 struct se_portal_group
*se_tpg
;
591 spinlock_t device_list_lock
;
592 spinlock_t nacl_sess_lock
;
593 struct config_group acl_group
;
594 struct config_group acl_attrib_group
;
595 struct config_group acl_auth_group
;
596 struct config_group acl_param_group
;
597 struct config_group acl_fabric_stat_group
;
598 struct config_group
*acl_default_groups
[5];
599 struct list_head acl_list
;
600 struct list_head acl_sess_list
;
601 struct completion acl_free_comp
;
602 struct kref acl_kref
;
606 unsigned sess_tearing_down
:1;
608 enum target_prot_op sup_prot_ops
;
609 enum target_prot_type sess_prot_type
;
610 struct se_node_acl
*se_node_acl
;
611 struct se_portal_group
*se_tpg
;
612 void *fabric_sess_ptr
;
613 struct list_head sess_list
;
614 struct list_head sess_acl_list
;
615 struct list_head sess_cmd_list
;
616 struct list_head sess_wait_list
;
617 spinlock_t sess_cmd_lock
;
618 struct kref sess_kref
;
620 struct percpu_ida sess_tag_pool
;
624 struct se_transform_info
;
627 struct se_ml_stat_grps
{
628 struct config_group stat_group
;
629 struct config_group scsi_auth_intr_group
;
630 struct config_group scsi_att_intr_port_group
;
634 char initiatorname
[TRANSPORT_IQN_LEN
];
636 struct se_node_acl
*se_lun_nacl
;
637 struct se_lun
*se_lun
;
638 struct list_head lacl_list
;
639 struct config_group se_lun_group
;
640 struct se_ml_stat_grps ml_stat_grps
;
643 struct se_dev_entry
{
644 bool def_pr_registered
;
645 /* See transport_lunflags_table */
655 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
656 atomic_t pr_ref_count
;
657 struct se_lun_acl
*se_lun_acl
;
659 struct se_lun
*se_lun
;
660 struct list_head alua_port_list
;
661 struct list_head ua_list
;
664 struct se_dev_attrib
{
665 int emulate_model_alias
;
667 int emulate_fua_write
;
668 int emulate_fua_read
;
669 int emulate_write_cache
;
670 int emulate_ua_intlck_ctrl
;
677 enum target_prot_type pi_prot_type
;
678 enum target_prot_type hw_pi_prot_type
;
679 int enforce_pr_isids
;
682 int emulate_rest_reord
;
689 u32 max_unmap_lba_count
;
690 u32 max_unmap_block_desc_count
;
691 u32 unmap_granularity
;
692 u32 unmap_granularity_alignment
;
693 u32 max_write_same_len
;
694 u32 max_bytes_per_io
;
695 struct se_device
*da_dev
;
696 struct config_group da_group
;
699 struct se_port_stat_grps
{
700 struct config_group stat_group
;
701 struct config_group scsi_port_group
;
702 struct config_group scsi_tgt_port_group
;
703 struct config_group scsi_transport_group
;
707 #define SE_LUN_LINK_MAGIC 0xffff7771
709 /* See transport_lun_status_table */
710 enum transport_lun_status_table lun_status
;
714 atomic_t lun_acl_count
;
715 spinlock_t lun_acl_lock
;
716 spinlock_t lun_sep_lock
;
717 struct completion lun_shutdown_comp
;
718 struct list_head lun_acl_list
;
719 struct se_device
*lun_se_dev
;
720 struct se_port
*lun_sep
;
721 struct config_group lun_group
;
722 struct se_port_stat_grps port_stat_grps
;
723 struct completion lun_ref_comp
;
724 struct percpu_ref lun_ref
;
727 struct se_dev_stat_grps
{
728 struct config_group stat_group
;
729 struct config_group scsi_dev_group
;
730 struct config_group scsi_tgt_dev_group
;
731 struct config_group scsi_lu_group
;
735 #define SE_DEV_LINK_MAGIC 0xfeeddeef
737 /* RELATIVE TARGET PORT IDENTIFER Counter */
738 u16 dev_rpti_counter
;
739 /* Used for SAM Task Attribute ordering */
740 u32 dev_cur_ordered_id
;
742 #define DF_CONFIGURED 0x00000001
743 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
744 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
745 #define DF_USING_UDEV_PATH 0x00000008
746 #define DF_USING_ALIAS 0x00000010
748 /* Physical device queue depth */
750 /* Used for SPC-2 reservations enforce of ISIDs */
751 u64 dev_res_bin_isid
;
752 /* Pointer to transport specific device structure */
755 atomic_long_t num_resets
;
756 atomic_long_t num_cmds
;
757 atomic_long_t read_bytes
;
758 atomic_long_t write_bytes
;
759 /* Active commands on this virtual SE device */
760 atomic_t simple_cmds
;
761 atomic_t dev_ordered_id
;
762 atomic_t dev_ordered_sync
;
763 atomic_t dev_qf_count
;
765 spinlock_t delayed_cmd_lock
;
766 spinlock_t execute_task_lock
;
767 spinlock_t dev_reservation_lock
;
768 unsigned int dev_reservation_flags
;
769 #define DRF_SPC2_RESERVATIONS 0x00000001
770 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
771 spinlock_t se_port_lock
;
772 spinlock_t se_tmr_lock
;
773 spinlock_t qf_cmd_lock
;
774 struct semaphore caw_sem
;
775 /* Used for legacy SPC-2 reservationsa */
776 struct se_node_acl
*dev_reserved_node_acl
;
777 /* Used for ALUA Logical Unit Group membership */
778 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
779 /* Used for SPC-3 Persistent Reservations */
780 struct t10_pr_registration
*dev_pr_res_holder
;
781 struct list_head dev_sep_list
;
782 struct list_head dev_tmr_list
;
783 struct workqueue_struct
*tmr_wq
;
784 struct work_struct qf_work_queue
;
785 struct list_head delayed_cmd_list
;
786 struct list_head state_list
;
787 struct list_head qf_cmd_list
;
788 struct list_head g_dev_node
;
789 /* Pointer to associated SE HBA */
790 struct se_hba
*se_hba
;
791 /* T10 Inquiry and VPD WWN Information */
792 struct t10_wwn t10_wwn
;
793 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
794 struct t10_alua t10_alua
;
795 /* T10 SPC-2 + SPC-3 Reservations */
796 struct t10_reservation t10_pr
;
797 struct se_dev_attrib dev_attrib
;
798 struct config_group dev_group
;
799 struct config_group dev_pr_group
;
800 struct se_dev_stat_grps dev_stat_grps
;
801 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
802 unsigned char dev_alias
[SE_DEV_ALIAS_LEN
];
803 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
804 unsigned char udev_path
[SE_UDEV_PATH_LEN
];
805 /* Pointer to template of function pointers for transport */
806 struct se_subsystem_api
*transport
;
807 /* Linked list for struct se_hba struct se_device list */
808 struct list_head dev_list
;
809 struct se_lun xcopy_lun
;
810 /* Protection Information */
817 /* See hba_flags_table */
819 /* Virtual iSCSI devices attached. */
822 /* Pointer to transport specific host structure. */
824 struct list_head hba_node
;
825 spinlock_t device_lock
;
826 struct config_group hba_group
;
827 struct mutex hba_access_mutex
;
828 struct se_subsystem_api
*transport
;
831 struct scsi_port_stats
{
838 /* RELATIVE TARGET PORT IDENTIFER */
840 int sep_tg_pt_secondary_stat
;
841 int sep_tg_pt_secondary_write_md
;
843 struct scsi_port_stats sep_stats
;
844 /* Used for ALUA Target Port Groups membership */
845 atomic_t sep_tg_pt_secondary_offline
;
846 /* Used for PR ALL_TG_PT=1 */
847 atomic_t sep_tg_pt_ref_cnt
;
848 spinlock_t sep_alua_lock
;
849 struct mutex sep_tg_pt_md_mutex
;
850 struct t10_alua_tg_pt_gp_member
*sep_alua_tg_pt_gp_mem
;
851 struct se_lun
*sep_lun
;
852 struct se_portal_group
*sep_tpg
;
853 struct list_head sep_alua_list
;
854 struct list_head sep_list
;
858 struct se_portal_group
*tpg_np_parent
;
859 struct config_group tpg_np_group
;
862 struct se_portal_group
{
863 /* Type of target portal group, see transport_tpg_type_table */
864 enum transport_tpg_type_table se_tpg_type
;
865 /* Number of ACLed Initiator Nodes for this TPG */
867 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
868 atomic_t tpg_pr_ref_count
;
869 /* Spinlock for adding/removing ACLed Nodes */
870 spinlock_t acl_node_lock
;
871 /* Spinlock for adding/removing sessions */
872 spinlock_t session_lock
;
873 spinlock_t tpg_lun_lock
;
874 /* Pointer to $FABRIC_MOD portal group */
875 void *se_tpg_fabric_ptr
;
876 struct list_head se_tpg_node
;
877 /* linked list for initiator ACL list */
878 struct list_head acl_node_list
;
879 struct se_lun
**tpg_lun_list
;
880 struct se_lun tpg_virt_lun0
;
881 /* List of TCM sessions associated wth this TPG */
882 struct list_head tpg_sess_list
;
883 /* Pointer to $FABRIC_MOD dependent code */
884 const struct target_core_fabric_ops
*se_tpg_tfo
;
885 struct se_wwn
*se_tpg_wwn
;
886 struct config_group tpg_group
;
887 struct config_group
*tpg_default_groups
[7];
888 struct config_group tpg_lun_group
;
889 struct config_group tpg_np_group
;
890 struct config_group tpg_acl_group
;
891 struct config_group tpg_attrib_group
;
892 struct config_group tpg_auth_group
;
893 struct config_group tpg_param_group
;
897 struct target_fabric_configfs
*wwn_tf
;
898 struct config_group wwn_group
;
899 struct config_group
*wwn_default_groups
[2];
900 struct config_group fabric_stat_group
;
903 static inline void atomic_inc_mb(atomic_t
*v
)
905 smp_mb__before_atomic();
907 smp_mb__after_atomic();
910 static inline void atomic_dec_mb(atomic_t
*v
)
912 smp_mb__before_atomic();
914 smp_mb__after_atomic();
917 #endif /* TARGET_CORE_BASE_H */