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