1 #ifndef TARGET_CORE_BASE_H
2 #define TARGET_CORE_BASE_H
4 #include <linux/configfs.h> /* struct config_group */
5 #include <linux/dma-direction.h> /* enum dma_data_direction */
6 #include <linux/percpu_ida.h> /* struct percpu_ida */
7 #include <linux/percpu-refcount.h>
8 #include <linux/semaphore.h> /* struct semaphore */
9 #include <linux/completion.h>
11 #define TARGET_CORE_VERSION "v5.0"
14 * Maximum size of a CDB that can be stored in se_cmd without allocating
15 * memory dynamically for the CDB.
17 #define TCM_MAX_COMMAND_SIZE 32
19 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
20 * defined 96, but the real limit is 252 (or 260 including the header)
22 #define TRANSPORT_SENSE_BUFFER 96
23 /* Used by transport_send_check_condition_and_sense() */
24 #define SPC_SENSE_KEY_OFFSET 2
25 #define SPC_ADD_SENSE_LEN_OFFSET 7
26 #define SPC_DESC_TYPE_OFFSET 8
27 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
28 #define SPC_VALIDITY_OFFSET 10
29 #define SPC_ASC_KEY_OFFSET 12
30 #define SPC_ASCQ_KEY_OFFSET 13
31 #define TRANSPORT_IQN_LEN 224
32 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
33 #define LU_GROUP_NAME_BUF 256
34 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
35 #define TG_PT_GROUP_NAME_BUF 256
36 /* Used to parse VPD into struct t10_vpd */
37 #define VPD_TMP_BUF_SIZE 254
38 /* Used by transport_generic_cmd_sequencer() */
39 #define READ_BLOCK_LEN 6
40 #define READ_CAP_LEN 8
41 #define READ_POSITION_LEN 20
42 #define INQUIRY_LEN 36
43 /* Used by transport_get_inquiry_vpd_serial() */
44 #define INQUIRY_VPD_SERIAL_LEN 254
45 /* Used by transport_get_inquiry_vpd_device_ident() */
46 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
48 /* Attempts before moving from SHORT to LONG */
49 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
50 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
51 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
53 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
55 /* struct se_dev_attrib sanity values */
56 /* Default max_unmap_lba_count */
57 #define DA_MAX_UNMAP_LBA_COUNT 0
58 /* Default max_unmap_block_desc_count */
59 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
60 /* Default unmap_granularity */
61 #define DA_UNMAP_GRANULARITY_DEFAULT 0
62 /* Default unmap_granularity_alignment */
63 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
64 /* Default unmap_zeroes_data */
65 #define DA_UNMAP_ZEROES_DATA_DEFAULT 0
66 /* Default max_write_same_len, disabled by default */
67 #define DA_MAX_WRITE_SAME_LEN 0
68 /* Use a model alias based on the configfs backend device name */
69 #define DA_EMULATE_MODEL_ALIAS 0
70 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
71 #define DA_EMULATE_WRITE_CACHE 0
72 /* Emulation for UNIT ATTENTION Interlock Control */
73 #define DA_EMULATE_UA_INTLLCK_CTRL 0
74 /* Emulation for TASK_ABORTED status (TAS) by default */
75 #define DA_EMULATE_TAS 1
76 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
77 #define DA_EMULATE_TPU 0
79 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
80 * block/blk-lib.c:blkdev_issue_discard()
82 #define DA_EMULATE_TPWS 0
83 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
84 #define DA_EMULATE_CAW 1
85 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
86 #define DA_EMULATE_3PC 1
87 /* No Emulation for PSCSI by default */
88 #define DA_EMULATE_ALUA 0
89 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
90 #define DA_ENFORCE_PR_ISIDS 1
91 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
92 #define DA_FORCE_PR_APTPL 0
93 #define DA_STATUS_MAX_SECTORS_MIN 16
94 #define DA_STATUS_MAX_SECTORS_MAX 8192
95 /* By default don't report non-rotating (solid state) medium */
96 #define DA_IS_NONROT 0
97 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
98 #define DA_EMULATE_REST_REORD 0
100 #define SE_INQUIRY_BUF 1024
101 #define SE_MODE_PAGE_BUF 512
102 #define SE_SENSE_BUF 96
104 /* struct se_hba->hba_flags */
105 enum hba_flags_table
{
106 HBA_FLAGS_INTERNAL_USE
= 0x01,
107 HBA_FLAGS_PSCSI_MODE
= 0x02,
110 /* Special transport agnostic struct se_cmd->t_states */
111 enum transport_state_table
{
112 TRANSPORT_NO_STATE
= 0,
113 TRANSPORT_NEW_CMD
= 1,
114 TRANSPORT_WRITE_PENDING
= 3,
115 TRANSPORT_PROCESSING
= 5,
116 TRANSPORT_COMPLETE
= 6,
117 TRANSPORT_ISTATE_PROCESSING
= 11,
118 TRANSPORT_COMPLETE_QF_WP
= 18,
119 TRANSPORT_COMPLETE_QF_OK
= 19,
122 /* Used for struct se_cmd->se_cmd_flags */
123 enum se_cmd_flags_table
{
124 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
125 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
126 SCF_EMULATED_TASK_SENSE
= 0x00000004,
127 SCF_SCSI_DATA_CDB
= 0x00000008,
128 SCF_SCSI_TMR_CDB
= 0x00000010,
129 SCF_FUA
= 0x00000080,
130 SCF_SE_LUN_CMD
= 0x00000100,
131 SCF_BIDI
= 0x00000400,
132 SCF_SENT_CHECK_CONDITION
= 0x00000800,
133 SCF_OVERFLOW_BIT
= 0x00001000,
134 SCF_UNDERFLOW_BIT
= 0x00002000,
135 SCF_SEND_DELAYED_TAS
= 0x00004000,
136 SCF_ALUA_NON_OPTIMIZED
= 0x00008000,
137 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00020000,
138 SCF_COMPARE_AND_WRITE
= 0x00080000,
139 SCF_COMPARE_AND_WRITE_POST
= 0x00100000,
140 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC
= 0x00200000,
141 SCF_ACK_KREF
= 0x00400000,
142 SCF_USE_CPUID
= 0x00800000,
143 SCF_TASK_ATTR_SET
= 0x01000000,
147 * Used by transport_send_check_condition_and_sense()
148 * to signal which ASC/ASCQ sense payload should be built.
150 typedef unsigned __bitwise sense_reason_t
;
152 enum tcm_sense_reason_table
{
153 #define R(x) (__force sense_reason_t )(x)
154 TCM_NO_SENSE
= R(0x00),
155 TCM_NON_EXISTENT_LUN
= R(0x01),
156 TCM_UNSUPPORTED_SCSI_OPCODE
= R(0x02),
157 TCM_INCORRECT_AMOUNT_OF_DATA
= R(0x03),
158 TCM_UNEXPECTED_UNSOLICITED_DATA
= R(0x04),
159 TCM_SERVICE_CRC_ERROR
= R(0x05),
160 TCM_SNACK_REJECTED
= R(0x06),
161 TCM_SECTOR_COUNT_TOO_MANY
= R(0x07),
162 TCM_INVALID_CDB_FIELD
= R(0x08),
163 TCM_INVALID_PARAMETER_LIST
= R(0x09),
164 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= R(0x0a),
165 TCM_UNKNOWN_MODE_PAGE
= R(0x0b),
166 TCM_WRITE_PROTECTED
= R(0x0c),
167 TCM_CHECK_CONDITION_ABORT_CMD
= R(0x0d),
168 TCM_CHECK_CONDITION_UNIT_ATTENTION
= R(0x0e),
169 TCM_CHECK_CONDITION_NOT_READY
= R(0x0f),
170 TCM_RESERVATION_CONFLICT
= R(0x10),
171 TCM_ADDRESS_OUT_OF_RANGE
= R(0x11),
172 TCM_OUT_OF_RESOURCES
= R(0x12),
173 TCM_PARAMETER_LIST_LENGTH_ERROR
= R(0x13),
174 TCM_MISCOMPARE_VERIFY
= R(0x14),
175 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED
= R(0x15),
176 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED
= R(0x16),
177 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED
= R(0x17),
178 TCM_COPY_TARGET_DEVICE_NOT_REACHABLE
= R(0x18),
179 TCM_TOO_MANY_TARGET_DESCS
= R(0x19),
180 TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE
= R(0x1a),
181 TCM_TOO_MANY_SEGMENT_DESCS
= R(0x1b),
182 TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE
= R(0x1c),
186 enum target_sc_flags_table
{
187 TARGET_SCF_BIDI_OP
= 0x01,
188 TARGET_SCF_ACK_KREF
= 0x02,
189 TARGET_SCF_UNKNOWN_SIZE
= 0x04,
190 TARGET_SCF_USE_CPUID
= 0x08,
193 /* fabric independent task management function values */
194 enum tcm_tmreq_table
{
196 TMR_ABORT_TASK_SET
= 2,
198 TMR_CLEAR_TASK_SET
= 4,
200 TMR_TARGET_WARM_RESET
= 6,
201 TMR_TARGET_COLD_RESET
= 7,
205 /* fabric independent task management response values */
206 enum tcm_tmrsp_table
{
207 TMR_FUNCTION_FAILED
= 0,
208 TMR_FUNCTION_COMPLETE
= 1,
209 TMR_TASK_DOES_NOT_EXIST
= 2,
210 TMR_LUN_DOES_NOT_EXIST
= 3,
211 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED
= 4,
212 TMR_FUNCTION_REJECTED
= 5,
216 * Used for target SCSI statistics
221 SCSI_AUTH_INTR_INDEX
,
227 struct t10_alua_lba_map_member
{
228 struct list_head lba_map_mem_list
;
229 int lba_map_mem_alua_state
;
230 int lba_map_mem_alua_pg_id
;
233 struct t10_alua_lba_map
{
234 u64 lba_map_first_lba
;
235 u64 lba_map_last_lba
;
236 struct list_head lba_map_list
;
237 struct list_head lba_map_mem_list
;
241 /* ALUA Target Port Group ID */
242 u16 alua_tg_pt_gps_counter
;
243 u32 alua_tg_pt_gps_count
;
244 /* Referrals support */
245 spinlock_t lba_map_lock
;
246 u32 lba_map_segment_size
;
247 u32 lba_map_segment_multiplier
;
248 struct list_head lba_map_list
;
249 spinlock_t tg_pt_gps_lock
;
250 struct se_device
*t10_dev
;
251 /* Used for default ALUA Target Port Group */
252 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
253 /* Used for default ALUA Target Port Group ConfigFS group */
254 struct config_group alua_tg_pt_gps_group
;
255 struct list_head tg_pt_gps_list
;
258 struct t10_alua_lu_gp
{
262 atomic_t lu_gp_ref_cnt
;
263 spinlock_t lu_gp_lock
;
264 struct config_group lu_gp_group
;
265 struct list_head lu_gp_node
;
266 struct list_head lu_gp_mem_list
;
269 struct t10_alua_lu_gp_member
{
271 atomic_t lu_gp_mem_ref_cnt
;
272 spinlock_t lu_gp_mem_lock
;
273 struct t10_alua_lu_gp
*lu_gp
;
274 struct se_device
*lu_gp_mem_dev
;
275 struct list_head lu_gp_mem_list
;
278 struct t10_alua_tg_pt_gp
{
280 int tg_pt_gp_valid_id
;
281 int tg_pt_gp_alua_supported_states
;
282 int tg_pt_gp_alua_pending_state
;
283 int tg_pt_gp_alua_previous_state
;
284 int tg_pt_gp_alua_access_status
;
285 int tg_pt_gp_alua_access_type
;
286 int tg_pt_gp_nonop_delay_msecs
;
287 int tg_pt_gp_trans_delay_msecs
;
288 int tg_pt_gp_implicit_trans_secs
;
290 int tg_pt_gp_write_metadata
;
291 u32 tg_pt_gp_members
;
292 atomic_t tg_pt_gp_alua_access_state
;
293 atomic_t tg_pt_gp_ref_cnt
;
294 spinlock_t tg_pt_gp_lock
;
295 struct mutex tg_pt_gp_md_mutex
;
296 struct se_device
*tg_pt_gp_dev
;
297 struct config_group tg_pt_gp_group
;
298 struct list_head tg_pt_gp_list
;
299 struct list_head tg_pt_gp_lun_list
;
300 struct se_lun
*tg_pt_gp_alua_lun
;
301 struct se_node_acl
*tg_pt_gp_alua_nacl
;
302 struct work_struct tg_pt_gp_transition_work
;
303 struct completion
*tg_pt_gp_transition_complete
;
307 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
308 int protocol_identifier_set
;
309 u32 protocol_identifier
;
310 u32 device_identifier_code_set
;
312 u32 device_identifier_type
;
313 struct list_head vpd_list
;
320 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
321 spinlock_t t10_vpd_lock
;
322 struct se_device
*t10_dev
;
323 struct config_group t10_wwn_group
;
324 struct list_head t10_vpd_list
;
327 struct t10_pr_registration
{
328 /* Used for fabrics that contain WWN+ISID */
329 #define PR_REG_ISID_LEN 16
330 /* PR_REG_ISID_LEN + ',i,0x' */
331 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
332 char pr_reg_isid
[PR_REG_ISID_LEN
];
333 /* Used during APTPL metadata reading */
334 #define PR_APTPL_MAX_IPORT_LEN 256
335 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
336 /* Used during APTPL metadata reading */
337 #define PR_APTPL_MAX_TPORT_LEN 256
338 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
341 /* Reservation effects all target ports */
342 int pr_reg_all_tg_pt
;
343 /* Activate Persistence across Target Power Loss */
348 /* Used for fabric initiator WWPNs using a ISID */
349 bool isid_present_at_reg
;
350 u64 pr_res_mapped_lun
;
351 u64 pr_aptpl_target_lun
;
353 u32 pr_res_generation
;
356 atomic_t pr_res_holders
;
357 struct se_node_acl
*pr_reg_nacl
;
358 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */
359 struct se_dev_entry
*pr_reg_deve
;
360 struct list_head pr_reg_list
;
361 struct list_head pr_reg_abort_list
;
362 struct list_head pr_reg_aptpl_list
;
363 struct list_head pr_reg_atp_list
;
364 struct list_head pr_reg_atp_mem_list
;
367 struct t10_reservation
{
368 /* Reservation effects all target ports */
370 /* Activate Persistence across Target Power Loss enabled
373 #define PR_APTPL_BUF_LEN 262144
375 spinlock_t registration_lock
;
376 spinlock_t aptpl_reg_lock
;
378 * This will always be set by one individual I_T Nexus.
379 * However with all_tg_pt=1, other I_T Nexus from the
380 * same initiator can access PR reg/res info on a different
383 * There is also the 'All Registrants' case, where there is
384 * a single *pr_res_holder of the reservation, but all
385 * registrations are considered reservation holders.
387 struct se_node_acl
*pr_res_holder
;
388 struct list_head registration_list
;
389 struct list_head aptpl_reg_list
;
393 /* Task Management function to be performed */
395 /* Task Management response to send */
398 /* Reference to ITT that Task Mgmt should be performed */
400 void *fabric_tmr_ptr
;
401 struct se_cmd
*task_cmd
;
402 struct se_device
*tmr_dev
;
403 struct list_head tmr_list
;
406 enum target_prot_op
{
407 TARGET_PROT_NORMAL
= 0,
408 TARGET_PROT_DIN_INSERT
= (1 << 0),
409 TARGET_PROT_DOUT_INSERT
= (1 << 1),
410 TARGET_PROT_DIN_STRIP
= (1 << 2),
411 TARGET_PROT_DOUT_STRIP
= (1 << 3),
412 TARGET_PROT_DIN_PASS
= (1 << 4),
413 TARGET_PROT_DOUT_PASS
= (1 << 5),
416 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
417 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
418 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
420 enum target_prot_type
{
421 TARGET_DIF_TYPE0_PROT
,
422 TARGET_DIF_TYPE1_PROT
,
423 TARGET_DIF_TYPE2_PROT
,
424 TARGET_DIF_TYPE3_PROT
,
427 enum target_core_dif_check
{
428 TARGET_DIF_CHECK_GUARD
= 0x1 << 0,
429 TARGET_DIF_CHECK_APPTAG
= 0x1 << 1,
430 TARGET_DIF_CHECK_REFTAG
= 0x1 << 2,
433 /* for sam_task_attr */
434 #define TCM_SIMPLE_TAG 0x20
435 #define TCM_HEAD_TAG 0x21
436 #define TCM_ORDERED_TAG 0x22
437 #define TCM_ACA_TAG 0x24
440 /* SAM response code being sent to initiator */
444 u16 scsi_sense_length
;
445 unsigned cmd_wait_set
:1;
446 unsigned unknown_data_length
:1;
448 u64 tag
; /* SAM command identifier aka task tag */
449 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
450 int alua_nonop_delay
;
451 /* See include/linux/dma-mapping.h */
452 enum dma_data_direction data_direction
;
453 /* For SAM Task Attribute */
455 /* Used for se_sess->sess_tag_pool */
456 unsigned int map_tag
;
457 /* Transport protocol dependent state, see transport_state_table */
458 enum transport_state_table t_state
;
459 /* See se_cmd_flags_table */
461 /* Total size in bytes associated with command */
465 /* Persistent Reservation key */
467 /* Used for sense data */
469 struct list_head se_delayed_node
;
470 struct list_head se_qf_node
;
471 struct se_device
*se_dev
;
472 struct se_lun
*se_lun
;
473 /* Only used for internal passthrough and legacy TCM fabric modules */
474 struct se_session
*se_sess
;
475 struct se_tmr_req
*se_tmr_req
;
476 struct list_head se_cmd_list
;
477 struct completion cmd_wait_comp
;
478 const struct target_core_fabric_ops
*se_tfo
;
479 sense_reason_t (*execute_cmd
)(struct se_cmd
*);
480 sense_reason_t (*transport_complete_callback
)(struct se_cmd
*, bool, int *);
483 unsigned char *t_task_cdb
;
484 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
485 unsigned long long t_task_lba
;
486 unsigned int t_task_nolb
;
487 unsigned int transport_state
;
488 #define CMD_T_ABORTED (1 << 0)
489 #define CMD_T_ACTIVE (1 << 1)
490 #define CMD_T_COMPLETE (1 << 2)
491 #define CMD_T_SENT (1 << 4)
492 #define CMD_T_STOP (1 << 5)
493 #define CMD_T_TAS (1 << 10)
494 #define CMD_T_FABRIC_STOP (1 << 11)
495 spinlock_t t_state_lock
;
496 struct kref cmd_kref
;
497 struct completion t_transport_stop_comp
;
499 struct work_struct work
;
501 struct scatterlist
*t_data_sg
;
502 struct scatterlist
*t_data_sg_orig
;
503 unsigned int t_data_nents
;
504 unsigned int t_data_nents_orig
;
506 struct scatterlist
*t_bidi_data_sg
;
507 unsigned int t_bidi_data_nents
;
509 /* Used for lun->lun_ref counting */
512 struct list_head state_list
;
514 /* backend private data */
517 /* DIF related members */
518 enum target_prot_op prot_op
;
519 enum target_prot_type prot_type
;
524 struct scatterlist
*t_prot_sg
;
525 unsigned int t_prot_nents
;
526 sense_reason_t pi_err
;
534 struct list_head ua_nacl_list
;
538 char initiatorname
[TRANSPORT_IQN_LEN
];
539 /* Used to signal demo mode created ACL, disabled by default */
540 bool dynamic_node_acl
;
544 enum target_prot_type saved_prot_type
;
545 #define MAX_ACL_TAG_SIZE 64
546 char acl_tag
[MAX_ACL_TAG_SIZE
];
547 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
548 atomic_t acl_pr_ref_count
;
549 struct hlist_head lun_entry_hlist
;
550 struct se_session
*nacl_sess
;
551 struct se_portal_group
*se_tpg
;
552 struct mutex lun_entry_mutex
;
553 spinlock_t nacl_sess_lock
;
554 struct config_group acl_group
;
555 struct config_group acl_attrib_group
;
556 struct config_group acl_auth_group
;
557 struct config_group acl_param_group
;
558 struct config_group acl_fabric_stat_group
;
559 struct list_head acl_list
;
560 struct list_head acl_sess_list
;
561 struct completion acl_free_comp
;
562 struct kref acl_kref
;
565 static inline struct se_node_acl
*acl_to_nacl(struct config_item
*item
)
567 return container_of(to_config_group(item
), struct se_node_acl
,
571 static inline struct se_node_acl
*attrib_to_nacl(struct config_item
*item
)
573 return container_of(to_config_group(item
), struct se_node_acl
,
577 static inline struct se_node_acl
*auth_to_nacl(struct config_item
*item
)
579 return container_of(to_config_group(item
), struct se_node_acl
,
583 static inline struct se_node_acl
*param_to_nacl(struct config_item
*item
)
585 return container_of(to_config_group(item
), struct se_node_acl
,
589 static inline struct se_node_acl
*fabric_stat_to_nacl(struct config_item
*item
)
591 return container_of(to_config_group(item
), struct se_node_acl
,
592 acl_fabric_stat_group
);
596 unsigned sess_tearing_down
:1;
598 enum target_prot_op sup_prot_ops
;
599 enum target_prot_type sess_prot_type
;
600 struct se_node_acl
*se_node_acl
;
601 struct se_portal_group
*se_tpg
;
602 void *fabric_sess_ptr
;
603 struct list_head sess_list
;
604 struct list_head sess_acl_list
;
605 struct list_head sess_cmd_list
;
606 struct list_head sess_wait_list
;
607 spinlock_t sess_cmd_lock
;
609 struct percpu_ida sess_tag_pool
;
613 struct se_transform_info
;
616 struct se_ml_stat_grps
{
617 struct config_group stat_group
;
618 struct config_group scsi_auth_intr_group
;
619 struct config_group scsi_att_intr_port_group
;
624 struct se_node_acl
*se_lun_nacl
;
625 struct se_lun
*se_lun
;
626 struct config_group se_lun_group
;
627 struct se_ml_stat_grps ml_stat_grps
;
630 struct se_dev_entry
{
636 atomic_long_t total_cmds
;
637 atomic_long_t read_bytes
;
638 atomic_long_t write_bytes
;
640 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
642 struct completion pr_comp
;
643 struct se_lun_acl __rcu
*se_lun_acl
;
645 struct se_lun __rcu
*se_lun
;
646 #define DEF_PR_REG_ACTIVE 1
647 unsigned long deve_flags
;
648 struct list_head alua_port_list
;
649 struct list_head lun_link
;
650 struct list_head ua_list
;
651 struct hlist_node link
;
652 struct rcu_head rcu_head
;
655 struct se_dev_attrib
{
656 int emulate_model_alias
;
658 int emulate_fua_write
;
659 int emulate_fua_read
;
660 int emulate_write_cache
;
661 int emulate_ua_intlck_ctrl
;
668 enum target_prot_type pi_prot_type
;
669 enum target_prot_type hw_pi_prot_type
;
670 int enforce_pr_isids
;
673 int emulate_rest_reord
;
674 int unmap_zeroes_data
;
681 u32 max_unmap_lba_count
;
682 u32 max_unmap_block_desc_count
;
683 u32 unmap_granularity
;
684 u32 unmap_granularity_alignment
;
685 u32 max_write_same_len
;
686 u32 max_bytes_per_io
;
687 struct se_device
*da_dev
;
688 struct config_group da_group
;
691 struct se_port_stat_grps
{
692 struct config_group stat_group
;
693 struct config_group scsi_port_group
;
694 struct config_group scsi_tgt_port_group
;
695 struct config_group scsi_transport_group
;
698 struct scsi_port_stats
{
699 atomic_long_t cmd_pdus
;
700 atomic_long_t tx_data_octets
;
701 atomic_long_t rx_data_octets
;
706 #define SE_LUN_LINK_MAGIC 0xffff7771
711 /* RELATIVE TARGET PORT IDENTIFER */
713 atomic_t lun_acl_count
;
714 struct se_device __rcu
*lun_se_dev
;
716 struct list_head lun_deve_list
;
717 spinlock_t lun_deve_lock
;
720 int lun_tg_pt_secondary_stat
;
721 int lun_tg_pt_secondary_write_md
;
722 atomic_t lun_tg_pt_secondary_offline
;
723 struct mutex lun_tg_pt_md_mutex
;
725 /* ALUA target port group linkage */
726 struct list_head lun_tg_pt_gp_link
;
727 struct t10_alua_tg_pt_gp
*lun_tg_pt_gp
;
728 spinlock_t lun_tg_pt_gp_lock
;
730 struct se_portal_group
*lun_tpg
;
731 struct scsi_port_stats lun_stats
;
732 struct config_group lun_group
;
733 struct se_port_stat_grps port_stat_grps
;
734 struct completion lun_ref_comp
;
735 struct completion lun_shutdown_comp
;
736 struct percpu_ref lun_ref
;
737 struct list_head lun_dev_link
;
738 struct hlist_node link
;
739 struct rcu_head rcu_head
;
742 struct se_dev_stat_grps
{
743 struct config_group stat_group
;
744 struct config_group scsi_dev_group
;
745 struct config_group scsi_tgt_dev_group
;
746 struct config_group scsi_lu_group
;
750 #define SE_DEV_LINK_MAGIC 0xfeeddeef
752 /* RELATIVE TARGET PORT IDENTIFER Counter */
753 u16 dev_rpti_counter
;
754 /* Used for SAM Task Attribute ordering */
755 u32 dev_cur_ordered_id
;
757 #define DF_CONFIGURED 0x00000001
758 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
759 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
760 #define DF_USING_UDEV_PATH 0x00000008
761 #define DF_USING_ALIAS 0x00000010
762 #define DF_READ_ONLY 0x00000020
763 /* Physical device queue depth */
765 /* Used for SPC-2 reservations enforce of ISIDs */
766 u64 dev_res_bin_isid
;
767 /* Pointer to transport specific device structure */
770 atomic_long_t num_resets
;
771 atomic_long_t aborts_complete
;
772 atomic_long_t aborts_no_task
;
773 atomic_long_t num_cmds
;
774 atomic_long_t read_bytes
;
775 atomic_long_t write_bytes
;
776 /* Active commands on this virtual SE device */
777 atomic_t simple_cmds
;
778 atomic_t dev_ordered_sync
;
779 atomic_t dev_qf_count
;
781 spinlock_t delayed_cmd_lock
;
782 spinlock_t execute_task_lock
;
783 spinlock_t dev_reservation_lock
;
784 unsigned int dev_reservation_flags
;
785 #define DRF_SPC2_RESERVATIONS 0x00000001
786 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
787 spinlock_t se_port_lock
;
788 spinlock_t se_tmr_lock
;
789 spinlock_t qf_cmd_lock
;
790 struct semaphore caw_sem
;
791 /* Used for legacy SPC-2 reservationsa */
792 struct se_node_acl
*dev_reserved_node_acl
;
793 /* Used for ALUA Logical Unit Group membership */
794 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
795 /* Used for SPC-3 Persistent Reservations */
796 struct t10_pr_registration
*dev_pr_res_holder
;
797 struct list_head dev_sep_list
;
798 struct list_head dev_tmr_list
;
799 struct workqueue_struct
*tmr_wq
;
800 struct work_struct qf_work_queue
;
801 struct list_head delayed_cmd_list
;
802 struct list_head state_list
;
803 struct list_head qf_cmd_list
;
804 struct list_head g_dev_node
;
805 /* Pointer to associated SE HBA */
806 struct se_hba
*se_hba
;
807 /* T10 Inquiry and VPD WWN Information */
808 struct t10_wwn t10_wwn
;
809 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
810 struct t10_alua t10_alua
;
811 /* T10 SPC-2 + SPC-3 Reservations */
812 struct t10_reservation t10_pr
;
813 struct se_dev_attrib dev_attrib
;
814 struct config_group dev_group
;
815 struct config_group dev_pr_group
;
816 struct se_dev_stat_grps dev_stat_grps
;
817 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
818 unsigned char dev_alias
[SE_DEV_ALIAS_LEN
];
819 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
820 unsigned char udev_path
[SE_UDEV_PATH_LEN
];
821 /* Pointer to template of function pointers for transport */
822 const struct target_backend_ops
*transport
;
823 /* Linked list for struct se_hba struct se_device list */
824 struct list_head dev_list
;
825 struct se_lun xcopy_lun
;
826 /* Protection Information */
828 /* For se_lun->lun_se_dev RCU read-side critical access */
830 struct rcu_head rcu_head
;
836 /* See hba_flags_table */
838 /* Virtual iSCSI devices attached. */
841 /* Pointer to transport specific host structure. */
843 struct list_head hba_node
;
844 spinlock_t device_lock
;
845 struct config_group hba_group
;
846 struct mutex hba_access_mutex
;
847 struct target_backend
*backend
;
851 struct se_portal_group
*tpg_np_parent
;
852 struct config_group tpg_np_group
;
855 static inline struct se_tpg_np
*to_tpg_np(struct config_item
*item
)
857 return container_of(to_config_group(item
), struct se_tpg_np
,
861 struct se_portal_group
{
863 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1.
865 * Negative values can be used by fabric drivers for internal use TPGs.
868 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
869 atomic_t tpg_pr_ref_count
;
870 /* Spinlock for adding/removing ACLed Nodes */
871 struct mutex acl_node_mutex
;
872 /* Spinlock for adding/removing sessions */
873 spinlock_t session_lock
;
874 struct mutex tpg_lun_mutex
;
875 struct list_head se_tpg_node
;
876 /* linked list for initiator ACL list */
877 struct list_head acl_node_list
;
878 struct hlist_head tpg_lun_hlist
;
879 struct se_lun
*tpg_virt_lun0
;
880 /* List of TCM sessions associated wth this TPG */
881 struct list_head tpg_sess_list
;
882 /* Pointer to $FABRIC_MOD dependent code */
883 const struct target_core_fabric_ops
*se_tpg_tfo
;
884 struct se_wwn
*se_tpg_wwn
;
885 struct config_group tpg_group
;
886 struct config_group tpg_lun_group
;
887 struct config_group tpg_np_group
;
888 struct config_group tpg_acl_group
;
889 struct config_group tpg_attrib_group
;
890 struct config_group tpg_auth_group
;
891 struct config_group tpg_param_group
;
894 static inline struct se_portal_group
*to_tpg(struct config_item
*item
)
896 return container_of(to_config_group(item
), struct se_portal_group
,
900 static inline struct se_portal_group
*attrib_to_tpg(struct config_item
*item
)
902 return container_of(to_config_group(item
), struct se_portal_group
,
906 static inline struct se_portal_group
*auth_to_tpg(struct config_item
*item
)
908 return container_of(to_config_group(item
), struct se_portal_group
,
912 static inline struct se_portal_group
*param_to_tpg(struct config_item
*item
)
914 return container_of(to_config_group(item
), struct se_portal_group
,
919 struct target_fabric_configfs
*wwn_tf
;
921 struct config_group wwn_group
;
922 struct config_group fabric_stat_group
;
925 static inline void atomic_inc_mb(atomic_t
*v
)
927 smp_mb__before_atomic();
929 smp_mb__after_atomic();
932 static inline void atomic_dec_mb(atomic_t
*v
)
934 smp_mb__before_atomic();
936 smp_mb__after_atomic();
939 #endif /* TARGET_CORE_BASE_H */