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>
9 #include <linux/t10-pi.h>
13 #define TARGET_CORE_VERSION "v5.0"
16 * Maximum size of a CDB that can be stored in se_cmd without allocating
17 * memory dynamically for the CDB.
19 #define TCM_MAX_COMMAND_SIZE 32
21 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
22 * defined 96, but the real limit is 252 (or 260 including the header)
24 #define TRANSPORT_SENSE_BUFFER 96
25 /* Used by transport_send_check_condition_and_sense() */
26 #define SPC_SENSE_KEY_OFFSET 2
27 #define SPC_ADD_SENSE_LEN_OFFSET 7
28 #define SPC_DESC_TYPE_OFFSET 8
29 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
30 #define SPC_VALIDITY_OFFSET 10
31 #define SPC_ASC_KEY_OFFSET 12
32 #define SPC_ASCQ_KEY_OFFSET 13
33 #define TRANSPORT_IQN_LEN 224
34 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
35 #define LU_GROUP_NAME_BUF 256
36 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
37 #define TG_PT_GROUP_NAME_BUF 256
38 /* Used to parse VPD into struct t10_vpd */
39 #define VPD_TMP_BUF_SIZE 254
40 /* Used by transport_generic_cmd_sequencer() */
41 #define READ_BLOCK_LEN 6
42 #define READ_CAP_LEN 8
43 #define READ_POSITION_LEN 20
44 #define INQUIRY_LEN 36
45 /* Used by transport_get_inquiry_vpd_serial() */
46 #define INQUIRY_VPD_SERIAL_LEN 254
47 /* Used by transport_get_inquiry_vpd_device_ident() */
48 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
50 /* Attempts before moving from SHORT to LONG */
51 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
52 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
53 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
55 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
57 /* struct se_dev_attrib sanity values */
58 /* Default max_unmap_lba_count */
59 #define DA_MAX_UNMAP_LBA_COUNT 0
60 /* Default max_unmap_block_desc_count */
61 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
62 /* Default unmap_granularity */
63 #define DA_UNMAP_GRANULARITY_DEFAULT 0
64 /* Default unmap_granularity_alignment */
65 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
66 /* Default unmap_zeroes_data */
67 #define DA_UNMAP_ZEROES_DATA_DEFAULT 0
68 /* Default max_write_same_len, disabled by default */
69 #define DA_MAX_WRITE_SAME_LEN 0
70 /* Use a model alias based on the configfs backend device name */
71 #define DA_EMULATE_MODEL_ALIAS 0
72 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
73 #define DA_EMULATE_WRITE_CACHE 0
74 /* Emulation for UNIT ATTENTION Interlock Control */
75 #define DA_EMULATE_UA_INTLLCK_CTRL 0
76 /* Emulation for TASK_ABORTED status (TAS) by default */
77 #define DA_EMULATE_TAS 1
78 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
79 #define DA_EMULATE_TPU 0
81 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
82 * block/blk-lib.c:blkdev_issue_discard()
84 #define DA_EMULATE_TPWS 0
85 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
86 #define DA_EMULATE_CAW 1
87 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
88 #define DA_EMULATE_3PC 1
89 /* No Emulation for PSCSI by default */
90 #define DA_EMULATE_ALUA 0
91 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
92 #define DA_ENFORCE_PR_ISIDS 1
93 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
94 #define DA_FORCE_PR_APTPL 0
95 #define DA_STATUS_MAX_SECTORS_MIN 16
96 #define DA_STATUS_MAX_SECTORS_MAX 8192
97 /* By default don't report non-rotating (solid state) medium */
98 #define DA_IS_NONROT 0
99 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
100 #define DA_EMULATE_REST_REORD 0
102 #define SE_INQUIRY_BUF 1024
103 #define SE_MODE_PAGE_BUF 512
104 #define SE_SENSE_BUF 96
106 /* struct se_hba->hba_flags */
107 enum hba_flags_table
{
108 HBA_FLAGS_INTERNAL_USE
= 0x01,
109 HBA_FLAGS_PSCSI_MODE
= 0x02,
112 /* Special transport agnostic struct se_cmd->t_states */
113 enum transport_state_table
{
114 TRANSPORT_NO_STATE
= 0,
115 TRANSPORT_NEW_CMD
= 1,
116 TRANSPORT_WRITE_PENDING
= 3,
117 TRANSPORT_PROCESSING
= 5,
118 TRANSPORT_COMPLETE
= 6,
119 TRANSPORT_ISTATE_PROCESSING
= 11,
120 TRANSPORT_COMPLETE_QF_WP
= 18,
121 TRANSPORT_COMPLETE_QF_OK
= 19,
124 /* Used for struct se_cmd->se_cmd_flags */
125 enum se_cmd_flags_table
{
126 SCF_SUPPORTED_SAM_OPCODE
= 0x00000001,
127 SCF_TRANSPORT_TASK_SENSE
= 0x00000002,
128 SCF_EMULATED_TASK_SENSE
= 0x00000004,
129 SCF_SCSI_DATA_CDB
= 0x00000008,
130 SCF_SCSI_TMR_CDB
= 0x00000010,
131 SCF_FUA
= 0x00000080,
132 SCF_SE_LUN_CMD
= 0x00000100,
133 SCF_BIDI
= 0x00000400,
134 SCF_SENT_CHECK_CONDITION
= 0x00000800,
135 SCF_OVERFLOW_BIT
= 0x00001000,
136 SCF_UNDERFLOW_BIT
= 0x00002000,
137 SCF_SEND_DELAYED_TAS
= 0x00004000,
138 SCF_ALUA_NON_OPTIMIZED
= 0x00008000,
139 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC
= 0x00020000,
140 SCF_COMPARE_AND_WRITE
= 0x00080000,
141 SCF_COMPARE_AND_WRITE_POST
= 0x00100000,
142 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC
= 0x00200000,
143 SCF_ACK_KREF
= 0x00400000,
144 SCF_USE_CPUID
= 0x00800000,
147 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
148 enum transport_lunflags_table
{
149 TRANSPORT_LUNFLAGS_READ_ONLY
= 0x01,
150 TRANSPORT_LUNFLAGS_READ_WRITE
= 0x02,
154 * Used by transport_send_check_condition_and_sense()
155 * to signal which ASC/ASCQ sense payload should be built.
157 typedef unsigned __bitwise__ sense_reason_t
;
159 enum tcm_sense_reason_table
{
160 #define R(x) (__force sense_reason_t )(x)
161 TCM_NO_SENSE
= R(0x00),
162 TCM_NON_EXISTENT_LUN
= R(0x01),
163 TCM_UNSUPPORTED_SCSI_OPCODE
= R(0x02),
164 TCM_INCORRECT_AMOUNT_OF_DATA
= R(0x03),
165 TCM_UNEXPECTED_UNSOLICITED_DATA
= R(0x04),
166 TCM_SERVICE_CRC_ERROR
= R(0x05),
167 TCM_SNACK_REJECTED
= R(0x06),
168 TCM_SECTOR_COUNT_TOO_MANY
= R(0x07),
169 TCM_INVALID_CDB_FIELD
= R(0x08),
170 TCM_INVALID_PARAMETER_LIST
= R(0x09),
171 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
= R(0x0a),
172 TCM_UNKNOWN_MODE_PAGE
= R(0x0b),
173 TCM_WRITE_PROTECTED
= R(0x0c),
174 TCM_CHECK_CONDITION_ABORT_CMD
= R(0x0d),
175 TCM_CHECK_CONDITION_UNIT_ATTENTION
= R(0x0e),
176 TCM_CHECK_CONDITION_NOT_READY
= R(0x0f),
177 TCM_RESERVATION_CONFLICT
= R(0x10),
178 TCM_ADDRESS_OUT_OF_RANGE
= R(0x11),
179 TCM_OUT_OF_RESOURCES
= R(0x12),
180 TCM_PARAMETER_LIST_LENGTH_ERROR
= R(0x13),
181 TCM_MISCOMPARE_VERIFY
= R(0x14),
182 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED
= R(0x15),
183 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED
= R(0x16),
184 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED
= R(0x17),
188 enum target_sc_flags_table
{
189 TARGET_SCF_BIDI_OP
= 0x01,
190 TARGET_SCF_ACK_KREF
= 0x02,
191 TARGET_SCF_UNKNOWN_SIZE
= 0x04,
192 TARGET_SCF_USE_CPUID
= 0x08,
195 /* fabric independent task management function values */
196 enum tcm_tmreq_table
{
198 TMR_ABORT_TASK_SET
= 2,
200 TMR_CLEAR_TASK_SET
= 4,
202 TMR_TARGET_WARM_RESET
= 6,
203 TMR_TARGET_COLD_RESET
= 7,
206 /* fabric independent task management response values */
207 enum tcm_tmrsp_table
{
208 TMR_FUNCTION_FAILED
= 0,
209 TMR_FUNCTION_COMPLETE
= 1,
210 TMR_TASK_DOES_NOT_EXIST
= 2,
211 TMR_LUN_DOES_NOT_EXIST
= 3,
212 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED
= 4,
213 TMR_FUNCTION_REJECTED
= 5,
217 * Used for target SCSI statistics
222 SCSI_AUTH_INTR_INDEX
,
228 struct t10_alua_lba_map_member
{
229 struct list_head lba_map_mem_list
;
230 int lba_map_mem_alua_state
;
231 int lba_map_mem_alua_pg_id
;
234 struct t10_alua_lba_map
{
235 u64 lba_map_first_lba
;
236 u64 lba_map_last_lba
;
237 struct list_head lba_map_list
;
238 struct list_head lba_map_mem_list
;
242 /* ALUA Target Port Group ID */
243 u16 alua_tg_pt_gps_counter
;
244 u32 alua_tg_pt_gps_count
;
245 /* Referrals support */
246 spinlock_t lba_map_lock
;
247 u32 lba_map_segment_size
;
248 u32 lba_map_segment_multiplier
;
249 struct list_head lba_map_list
;
250 spinlock_t tg_pt_gps_lock
;
251 struct se_device
*t10_dev
;
252 /* Used for default ALUA Target Port Group */
253 struct t10_alua_tg_pt_gp
*default_tg_pt_gp
;
254 /* Used for default ALUA Target Port Group ConfigFS group */
255 struct config_group alua_tg_pt_gps_group
;
256 struct list_head tg_pt_gps_list
;
259 struct t10_alua_lu_gp
{
263 atomic_t lu_gp_ref_cnt
;
264 spinlock_t lu_gp_lock
;
265 struct config_group lu_gp_group
;
266 struct list_head lu_gp_node
;
267 struct list_head lu_gp_mem_list
;
270 struct t10_alua_lu_gp_member
{
272 atomic_t lu_gp_mem_ref_cnt
;
273 spinlock_t lu_gp_mem_lock
;
274 struct t10_alua_lu_gp
*lu_gp
;
275 struct se_device
*lu_gp_mem_dev
;
276 struct list_head lu_gp_mem_list
;
279 struct t10_alua_tg_pt_gp
{
281 int tg_pt_gp_valid_id
;
282 int tg_pt_gp_alua_supported_states
;
283 int tg_pt_gp_alua_pending_state
;
284 int tg_pt_gp_alua_previous_state
;
285 int tg_pt_gp_alua_access_status
;
286 int tg_pt_gp_alua_access_type
;
287 int tg_pt_gp_nonop_delay_msecs
;
288 int tg_pt_gp_trans_delay_msecs
;
289 int tg_pt_gp_implicit_trans_secs
;
291 int tg_pt_gp_write_metadata
;
292 u32 tg_pt_gp_members
;
293 atomic_t tg_pt_gp_alua_access_state
;
294 atomic_t tg_pt_gp_ref_cnt
;
295 spinlock_t tg_pt_gp_lock
;
296 struct mutex tg_pt_gp_md_mutex
;
297 struct se_device
*tg_pt_gp_dev
;
298 struct config_group tg_pt_gp_group
;
299 struct list_head tg_pt_gp_list
;
300 struct list_head tg_pt_gp_lun_list
;
301 struct se_lun
*tg_pt_gp_alua_lun
;
302 struct se_node_acl
*tg_pt_gp_alua_nacl
;
303 struct delayed_work tg_pt_gp_transition_work
;
304 struct completion
*tg_pt_gp_transition_complete
;
308 unsigned char device_identifier
[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN
];
309 int protocol_identifier_set
;
310 u32 protocol_identifier
;
311 u32 device_identifier_code_set
;
313 u32 device_identifier_type
;
314 struct list_head vpd_list
;
321 char unit_serial
[INQUIRY_VPD_SERIAL_LEN
];
322 spinlock_t t10_vpd_lock
;
323 struct se_device
*t10_dev
;
324 struct config_group t10_wwn_group
;
325 struct list_head t10_vpd_list
;
328 struct t10_pr_registration
{
329 /* Used for fabrics that contain WWN+ISID */
330 #define PR_REG_ISID_LEN 16
331 /* PR_REG_ISID_LEN + ',i,0x' */
332 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
333 char pr_reg_isid
[PR_REG_ISID_LEN
];
334 /* Used during APTPL metadata reading */
335 #define PR_APTPL_MAX_IPORT_LEN 256
336 unsigned char pr_iport
[PR_APTPL_MAX_IPORT_LEN
];
337 /* Used during APTPL metadata reading */
338 #define PR_APTPL_MAX_TPORT_LEN 256
339 unsigned char pr_tport
[PR_APTPL_MAX_TPORT_LEN
];
342 /* Reservation effects all target ports */
343 int pr_reg_all_tg_pt
;
344 /* Activate Persistence across Target Power Loss */
349 /* Used for fabric initiator WWPNs using a ISID */
350 bool isid_present_at_reg
;
351 u64 pr_res_mapped_lun
;
352 u64 pr_aptpl_target_lun
;
354 u32 pr_res_generation
;
357 atomic_t pr_res_holders
;
358 struct se_node_acl
*pr_reg_nacl
;
359 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */
360 struct se_dev_entry
*pr_reg_deve
;
361 struct list_head pr_reg_list
;
362 struct list_head pr_reg_abort_list
;
363 struct list_head pr_reg_aptpl_list
;
364 struct list_head pr_reg_atp_list
;
365 struct list_head pr_reg_atp_mem_list
;
368 struct t10_reservation
{
369 /* Reservation effects all target ports */
371 /* Activate Persistence across Target Power Loss enabled
374 #define PR_APTPL_BUF_LEN 262144
376 spinlock_t registration_lock
;
377 spinlock_t aptpl_reg_lock
;
379 * This will always be set by one individual I_T Nexus.
380 * However with all_tg_pt=1, other I_T Nexus from the
381 * same initiator can access PR reg/res info on a different
384 * There is also the 'All Registrants' case, where there is
385 * a single *pr_res_holder of the reservation, but all
386 * registrations are considered reservation holders.
388 struct se_node_acl
*pr_res_holder
;
389 struct list_head registration_list
;
390 struct list_head aptpl_reg_list
;
394 /* Task Management function to be performed */
396 /* Task Management response to send */
399 /* Reference to ITT that Task Mgmt should be performed */
401 void *fabric_tmr_ptr
;
402 struct se_cmd
*task_cmd
;
403 struct se_device
*tmr_dev
;
404 struct se_lun
*tmr_lun
;
405 struct list_head tmr_list
;
408 enum target_prot_op
{
409 TARGET_PROT_NORMAL
= 0,
410 TARGET_PROT_DIN_INSERT
= (1 << 0),
411 TARGET_PROT_DOUT_INSERT
= (1 << 1),
412 TARGET_PROT_DIN_STRIP
= (1 << 2),
413 TARGET_PROT_DOUT_STRIP
= (1 << 3),
414 TARGET_PROT_DIN_PASS
= (1 << 4),
415 TARGET_PROT_DOUT_PASS
= (1 << 5),
418 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
419 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
420 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
422 enum target_prot_type
{
423 TARGET_DIF_TYPE0_PROT
,
424 TARGET_DIF_TYPE1_PROT
,
425 TARGET_DIF_TYPE2_PROT
,
426 TARGET_DIF_TYPE3_PROT
,
429 enum target_core_dif_check
{
430 TARGET_DIF_CHECK_GUARD
= 0x1 << 0,
431 TARGET_DIF_CHECK_APPTAG
= 0x1 << 1,
432 TARGET_DIF_CHECK_REFTAG
= 0x1 << 2,
435 /* for sam_task_attr */
436 #define TCM_SIMPLE_TAG 0x20
437 #define TCM_HEAD_TAG 0x21
438 #define TCM_ORDERED_TAG 0x22
439 #define TCM_ACA_TAG 0x24
442 /* SAM response code being sent to initiator */
446 u16 scsi_sense_length
;
447 unsigned cmd_wait_set
:1;
448 unsigned unknown_data_length
:1;
450 u64 tag
; /* SAM command identifier aka task tag */
451 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
452 int alua_nonop_delay
;
453 /* See include/linux/dma-mapping.h */
454 enum dma_data_direction data_direction
;
455 /* For SAM Task Attribute */
457 /* Used for se_sess->sess_tag_pool */
458 unsigned int map_tag
;
459 /* Transport protocol dependent state, see transport_state_table */
460 enum transport_state_table t_state
;
461 /* See se_cmd_flags_table */
463 /* Total size in bytes associated with command */
467 /* Persistent Reservation key */
469 /* Used for sense data */
471 struct list_head se_delayed_node
;
472 struct list_head se_qf_node
;
473 struct se_device
*se_dev
;
474 struct se_lun
*se_lun
;
475 /* Only used for internal passthrough and legacy TCM fabric modules */
476 struct se_session
*se_sess
;
477 struct se_tmr_req
*se_tmr_req
;
478 struct list_head se_cmd_list
;
479 struct completion cmd_wait_comp
;
480 const struct target_core_fabric_ops
*se_tfo
;
481 sense_reason_t (*execute_cmd
)(struct se_cmd
*);
482 sense_reason_t (*transport_complete_callback
)(struct se_cmd
*, bool, int *);
485 unsigned char *t_task_cdb
;
486 unsigned char __t_task_cdb
[TCM_MAX_COMMAND_SIZE
];
487 unsigned long long t_task_lba
;
488 unsigned int t_task_nolb
;
489 unsigned int transport_state
;
490 #define CMD_T_ABORTED (1 << 0)
491 #define CMD_T_ACTIVE (1 << 1)
492 #define CMD_T_COMPLETE (1 << 2)
493 #define CMD_T_SENT (1 << 4)
494 #define CMD_T_STOP (1 << 5)
495 #define CMD_T_DEV_ACTIVE (1 << 7)
496 #define CMD_T_BUSY (1 << 9)
497 #define CMD_T_TAS (1 << 10)
498 #define CMD_T_FABRIC_STOP (1 << 11)
499 spinlock_t t_state_lock
;
500 struct kref cmd_kref
;
501 struct completion t_transport_stop_comp
;
503 struct work_struct work
;
505 struct scatterlist
*t_data_sg
;
506 struct scatterlist
*t_data_sg_orig
;
507 unsigned int t_data_nents
;
508 unsigned int t_data_nents_orig
;
510 struct scatterlist
*t_bidi_data_sg
;
511 unsigned int t_bidi_data_nents
;
513 /* Used for lun->lun_ref counting */
516 struct list_head state_list
;
518 /* backend private data */
521 /* DIF related members */
522 enum target_prot_op prot_op
;
523 enum target_prot_type prot_type
;
528 struct scatterlist
*t_prot_sg
;
529 unsigned int t_prot_nents
;
530 sense_reason_t pi_err
;
538 struct list_head ua_nacl_list
;
542 char initiatorname
[TRANSPORT_IQN_LEN
];
543 /* Used to signal demo mode created ACL, disabled by default */
544 bool dynamic_node_acl
;
548 enum target_prot_type saved_prot_type
;
549 #define MAX_ACL_TAG_SIZE 64
550 char acl_tag
[MAX_ACL_TAG_SIZE
];
551 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
552 atomic_t acl_pr_ref_count
;
553 struct hlist_head lun_entry_hlist
;
554 struct se_session
*nacl_sess
;
555 struct se_portal_group
*se_tpg
;
556 struct mutex lun_entry_mutex
;
557 spinlock_t nacl_sess_lock
;
558 struct config_group acl_group
;
559 struct config_group acl_attrib_group
;
560 struct config_group acl_auth_group
;
561 struct config_group acl_param_group
;
562 struct config_group acl_fabric_stat_group
;
563 struct config_group
*acl_default_groups
[5];
564 struct list_head acl_list
;
565 struct list_head acl_sess_list
;
566 struct completion acl_free_comp
;
567 struct kref acl_kref
;
570 static inline struct se_node_acl
*acl_to_nacl(struct config_item
*item
)
572 return container_of(to_config_group(item
), struct se_node_acl
,
576 static inline struct se_node_acl
*attrib_to_nacl(struct config_item
*item
)
578 return container_of(to_config_group(item
), struct se_node_acl
,
582 static inline struct se_node_acl
*auth_to_nacl(struct config_item
*item
)
584 return container_of(to_config_group(item
), struct se_node_acl
,
588 static inline struct se_node_acl
*param_to_nacl(struct config_item
*item
)
590 return container_of(to_config_group(item
), struct se_node_acl
,
594 static inline struct se_node_acl
*fabric_stat_to_nacl(struct config_item
*item
)
596 return container_of(to_config_group(item
), struct se_node_acl
,
597 acl_fabric_stat_group
);
601 unsigned sess_tearing_down
:1;
603 enum target_prot_op sup_prot_ops
;
604 enum target_prot_type sess_prot_type
;
605 struct se_node_acl
*se_node_acl
;
606 struct se_portal_group
*se_tpg
;
607 void *fabric_sess_ptr
;
608 struct list_head sess_list
;
609 struct list_head sess_acl_list
;
610 struct list_head sess_cmd_list
;
611 struct list_head sess_wait_list
;
612 spinlock_t sess_cmd_lock
;
613 struct kref sess_kref
;
615 struct percpu_ida sess_tag_pool
;
619 struct se_transform_info
;
622 struct se_ml_stat_grps
{
623 struct config_group stat_group
;
624 struct config_group scsi_auth_intr_group
;
625 struct config_group scsi_att_intr_port_group
;
630 struct se_node_acl
*se_lun_nacl
;
631 struct se_lun
*se_lun
;
632 struct config_group se_lun_group
;
633 struct se_ml_stat_grps ml_stat_grps
;
636 struct se_dev_entry
{
637 /* See transport_lunflags_table */
643 atomic_long_t total_cmds
;
644 atomic_long_t read_bytes
;
645 atomic_long_t write_bytes
;
647 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
649 struct completion pr_comp
;
650 struct se_lun_acl __rcu
*se_lun_acl
;
652 struct se_lun __rcu
*se_lun
;
653 #define DEF_PR_REG_ACTIVE 1
654 unsigned long deve_flags
;
655 struct list_head alua_port_list
;
656 struct list_head lun_link
;
657 struct list_head ua_list
;
658 struct hlist_node link
;
659 struct rcu_head rcu_head
;
662 struct se_dev_attrib
{
663 int emulate_model_alias
;
665 int emulate_fua_write
;
666 int emulate_fua_read
;
667 int emulate_write_cache
;
668 int emulate_ua_intlck_ctrl
;
675 enum target_prot_type pi_prot_type
;
676 enum target_prot_type hw_pi_prot_type
;
677 int enforce_pr_isids
;
680 int emulate_rest_reord
;
681 int unmap_zeroes_data
;
688 u32 max_unmap_lba_count
;
689 u32 max_unmap_block_desc_count
;
690 u32 unmap_granularity
;
691 u32 unmap_granularity_alignment
;
692 u32 max_write_same_len
;
693 u32 max_bytes_per_io
;
694 struct se_device
*da_dev
;
695 struct config_group da_group
;
698 struct se_port_stat_grps
{
699 struct config_group stat_group
;
700 struct config_group scsi_port_group
;
701 struct config_group scsi_tgt_port_group
;
702 struct config_group scsi_transport_group
;
705 struct scsi_port_stats
{
706 atomic_long_t cmd_pdus
;
707 atomic_long_t tx_data_octets
;
708 atomic_long_t rx_data_octets
;
713 #define SE_LUN_LINK_MAGIC 0xffff7771
718 /* RELATIVE TARGET PORT IDENTIFER */
720 atomic_t lun_acl_count
;
721 struct se_device __rcu
*lun_se_dev
;
723 struct list_head lun_deve_list
;
724 spinlock_t lun_deve_lock
;
727 int lun_tg_pt_secondary_stat
;
728 int lun_tg_pt_secondary_write_md
;
729 atomic_t lun_tg_pt_secondary_offline
;
730 struct mutex lun_tg_pt_md_mutex
;
732 /* ALUA target port group linkage */
733 struct list_head lun_tg_pt_gp_link
;
734 struct t10_alua_tg_pt_gp
*lun_tg_pt_gp
;
735 spinlock_t lun_tg_pt_gp_lock
;
737 struct se_portal_group
*lun_tpg
;
738 struct scsi_port_stats lun_stats
;
739 struct config_group lun_group
;
740 struct se_port_stat_grps port_stat_grps
;
741 struct completion lun_ref_comp
;
742 struct percpu_ref lun_ref
;
743 struct list_head lun_dev_link
;
744 struct hlist_node link
;
745 struct rcu_head rcu_head
;
748 struct se_dev_stat_grps
{
749 struct config_group stat_group
;
750 struct config_group scsi_dev_group
;
751 struct config_group scsi_tgt_dev_group
;
752 struct config_group scsi_lu_group
;
756 #define SE_DEV_LINK_MAGIC 0xfeeddeef
758 /* RELATIVE TARGET PORT IDENTIFER Counter */
759 u16 dev_rpti_counter
;
760 /* Used for SAM Task Attribute ordering */
761 u32 dev_cur_ordered_id
;
763 #define DF_CONFIGURED 0x00000001
764 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
765 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
766 #define DF_USING_UDEV_PATH 0x00000008
767 #define DF_USING_ALIAS 0x00000010
768 #define DF_READ_ONLY 0x00000020
769 /* Physical device queue depth */
771 /* Used for SPC-2 reservations enforce of ISIDs */
772 u64 dev_res_bin_isid
;
773 /* Pointer to transport specific device structure */
776 atomic_long_t num_resets
;
777 atomic_long_t num_cmds
;
778 atomic_long_t read_bytes
;
779 atomic_long_t write_bytes
;
780 /* Active commands on this virtual SE device */
781 atomic_t simple_cmds
;
782 atomic_t dev_ordered_sync
;
783 atomic_t dev_qf_count
;
785 spinlock_t delayed_cmd_lock
;
786 spinlock_t execute_task_lock
;
787 spinlock_t dev_reservation_lock
;
788 unsigned int dev_reservation_flags
;
789 #define DRF_SPC2_RESERVATIONS 0x00000001
790 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
791 spinlock_t se_port_lock
;
792 spinlock_t se_tmr_lock
;
793 spinlock_t qf_cmd_lock
;
794 struct semaphore caw_sem
;
795 /* Used for legacy SPC-2 reservationsa */
796 struct se_node_acl
*dev_reserved_node_acl
;
797 /* Used for ALUA Logical Unit Group membership */
798 struct t10_alua_lu_gp_member
*dev_alua_lu_gp_mem
;
799 /* Used for SPC-3 Persistent Reservations */
800 struct t10_pr_registration
*dev_pr_res_holder
;
801 struct list_head dev_sep_list
;
802 struct list_head dev_tmr_list
;
803 struct workqueue_struct
*tmr_wq
;
804 struct work_struct qf_work_queue
;
805 struct list_head delayed_cmd_list
;
806 struct list_head state_list
;
807 struct list_head qf_cmd_list
;
808 struct list_head g_dev_node
;
809 /* Pointer to associated SE HBA */
810 struct se_hba
*se_hba
;
811 /* T10 Inquiry and VPD WWN Information */
812 struct t10_wwn t10_wwn
;
813 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
814 struct t10_alua t10_alua
;
815 /* T10 SPC-2 + SPC-3 Reservations */
816 struct t10_reservation t10_pr
;
817 struct se_dev_attrib dev_attrib
;
818 struct config_group dev_group
;
819 struct config_group dev_pr_group
;
820 struct se_dev_stat_grps dev_stat_grps
;
821 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
822 unsigned char dev_alias
[SE_DEV_ALIAS_LEN
];
823 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
824 unsigned char udev_path
[SE_UDEV_PATH_LEN
];
825 /* Pointer to template of function pointers for transport */
826 const struct target_backend_ops
*transport
;
827 /* Linked list for struct se_hba struct se_device list */
828 struct list_head dev_list
;
829 struct se_lun xcopy_lun
;
830 /* Protection Information */
832 /* For se_lun->lun_se_dev RCU read-side critical access */
834 struct rcu_head rcu_head
;
840 /* See hba_flags_table */
842 /* Virtual iSCSI devices attached. */
845 /* Pointer to transport specific host structure. */
847 struct list_head hba_node
;
848 spinlock_t device_lock
;
849 struct config_group hba_group
;
850 struct mutex hba_access_mutex
;
851 struct target_backend
*backend
;
855 struct se_portal_group
*tpg_np_parent
;
856 struct config_group tpg_np_group
;
859 static inline struct se_tpg_np
*to_tpg_np(struct config_item
*item
)
861 return container_of(to_config_group(item
), struct se_tpg_np
,
865 struct se_portal_group
{
867 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1.
869 * Negative values can be used by fabric drivers for internal use TPGs.
872 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
873 atomic_t tpg_pr_ref_count
;
874 /* Spinlock for adding/removing ACLed Nodes */
875 struct mutex acl_node_mutex
;
876 /* Spinlock for adding/removing sessions */
877 spinlock_t session_lock
;
878 struct mutex tpg_lun_mutex
;
879 struct list_head se_tpg_node
;
880 /* linked list for initiator ACL list */
881 struct list_head acl_node_list
;
882 struct hlist_head tpg_lun_hlist
;
883 struct se_lun
*tpg_virt_lun0
;
884 /* List of TCM sessions associated wth this TPG */
885 struct list_head tpg_sess_list
;
886 /* Pointer to $FABRIC_MOD dependent code */
887 const struct target_core_fabric_ops
*se_tpg_tfo
;
888 struct se_wwn
*se_tpg_wwn
;
889 struct config_group tpg_group
;
890 struct config_group
*tpg_default_groups
[7];
891 struct config_group tpg_lun_group
;
892 struct config_group tpg_np_group
;
893 struct config_group tpg_acl_group
;
894 struct config_group tpg_attrib_group
;
895 struct config_group tpg_auth_group
;
896 struct config_group tpg_param_group
;
899 static inline struct se_portal_group
*to_tpg(struct config_item
*item
)
901 return container_of(to_config_group(item
), struct se_portal_group
,
905 static inline struct se_portal_group
*attrib_to_tpg(struct config_item
*item
)
907 return container_of(to_config_group(item
), struct se_portal_group
,
911 static inline struct se_portal_group
*auth_to_tpg(struct config_item
*item
)
913 return container_of(to_config_group(item
), struct se_portal_group
,
917 static inline struct se_portal_group
*param_to_tpg(struct config_item
*item
)
919 return container_of(to_config_group(item
), struct se_portal_group
,
924 struct target_fabric_configfs
*wwn_tf
;
925 struct config_group wwn_group
;
926 struct config_group
*wwn_default_groups
[2];
927 struct config_group fabric_stat_group
;
930 static inline void atomic_inc_mb(atomic_t
*v
)
932 smp_mb__before_atomic();
934 smp_mb__after_atomic();
937 static inline void atomic_dec_mb(atomic_t
*v
)
939 smp_mb__before_atomic();
941 smp_mb__after_atomic();
944 #endif /* TARGET_CORE_BASE_H */