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 */
9 #define TARGET_CORE_VERSION "v5.0"
12 * Maximum size of a CDB that can be stored in se_cmd without allocating
13 * memory dynamically for the CDB.
15 #define TCM_MAX_COMMAND_SIZE 32
17 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
18 * defined 96, but the real limit is 252 (or 260 including the header)
20 #define TRANSPORT_SENSE_BUFFER 96
21 /* Used by transport_send_check_condition_and_sense() */
22 #define SPC_SENSE_KEY_OFFSET 2
23 #define SPC_ADD_SENSE_LEN_OFFSET 7
24 #define SPC_DESC_TYPE_OFFSET 8
25 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
26 #define SPC_VALIDITY_OFFSET 10
27 #define SPC_ASC_KEY_OFFSET 12
28 #define SPC_ASCQ_KEY_OFFSET 13
29 #define TRANSPORT_IQN_LEN 224
30 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
31 #define LU_GROUP_NAME_BUF 256
32 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
33 #define TG_PT_GROUP_NAME_BUF 256
34 /* Used to parse VPD into struct t10_vpd */
35 #define VPD_TMP_BUF_SIZE 254
36 /* Used by transport_generic_cmd_sequencer() */
37 #define READ_BLOCK_LEN 6
38 #define READ_CAP_LEN 8
39 #define READ_POSITION_LEN 20
40 #define INQUIRY_LEN 36
41 /* Used by transport_get_inquiry_vpd_serial() */
42 #define INQUIRY_VPD_SERIAL_LEN 254
43 /* Used by transport_get_inquiry_vpd_device_ident() */
44 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
46 /* Attempts before moving from SHORT to LONG */
47 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
48 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
49 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
51 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
53 /* struct se_dev_attrib sanity values */
54 /* Default max_unmap_lba_count */
55 #define DA_MAX_UNMAP_LBA_COUNT 0
56 /* Default max_unmap_block_desc_count */
57 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
58 /* Default unmap_granularity */
59 #define DA_UNMAP_GRANULARITY_DEFAULT 0
60 /* Default unmap_granularity_alignment */
61 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
62 /* Default unmap_zeroes_data */
63 #define DA_UNMAP_ZEROES_DATA_DEFAULT 0
64 /* Default max_write_same_len, disabled by default */
65 #define DA_MAX_WRITE_SAME_LEN 0
66 /* Use a model alias based on the configfs backend device name */
67 #define DA_EMULATE_MODEL_ALIAS 0
68 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
69 #define DA_EMULATE_WRITE_CACHE 0
70 /* Emulation for UNIT ATTENTION Interlock Control */
71 #define DA_EMULATE_UA_INTLLCK_CTRL 0
72 /* Emulation for TASK_ABORTED status (TAS) by default */
73 #define DA_EMULATE_TAS 1
74 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
75 #define DA_EMULATE_TPU 0
77 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
78 * block/blk-lib.c:blkdev_issue_discard()
80 #define DA_EMULATE_TPWS 0
81 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
82 #define DA_EMULATE_CAW 1
83 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
84 #define DA_EMULATE_3PC 1
85 /* No Emulation for PSCSI by default */
86 #define DA_EMULATE_ALUA 0
87 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
88 #define DA_ENFORCE_PR_ISIDS 1
89 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
90 #define DA_FORCE_PR_APTPL 0
91 #define DA_STATUS_MAX_SECTORS_MIN 16
92 #define DA_STATUS_MAX_SECTORS_MAX 8192
93 /* By default don't report non-rotating (solid state) medium */
94 #define DA_IS_NONROT 0
95 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
96 #define DA_EMULATE_REST_REORD 0
98 #define SE_INQUIRY_BUF 1024
99 #define SE_MODE_PAGE_BUF 512
100 #define SE_SENSE_BUF 96
102 /* struct se_hba->hba_flags */
103 enum hba_flags_table {
104 HBA_FLAGS_INTERNAL_USE = 0x01,
105 HBA_FLAGS_PSCSI_MODE = 0x02,
108 /* Special transport agnostic struct se_cmd->t_states */
109 enum transport_state_table {
110 TRANSPORT_NO_STATE = 0,
111 TRANSPORT_NEW_CMD = 1,
112 TRANSPORT_WRITE_PENDING = 3,
113 TRANSPORT_PROCESSING = 5,
114 TRANSPORT_COMPLETE = 6,
115 TRANSPORT_ISTATE_PROCESSING = 11,
116 TRANSPORT_COMPLETE_QF_WP = 18,
117 TRANSPORT_COMPLETE_QF_OK = 19,
120 /* Used for struct se_cmd->se_cmd_flags */
121 enum se_cmd_flags_table {
122 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
123 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
124 SCF_EMULATED_TASK_SENSE = 0x00000004,
125 SCF_SCSI_DATA_CDB = 0x00000008,
126 SCF_SCSI_TMR_CDB = 0x00000010,
127 SCF_FUA = 0x00000080,
128 SCF_SE_LUN_CMD = 0x00000100,
129 SCF_BIDI = 0x00000400,
130 SCF_SENT_CHECK_CONDITION = 0x00000800,
131 SCF_OVERFLOW_BIT = 0x00001000,
132 SCF_UNDERFLOW_BIT = 0x00002000,
133 SCF_SEND_DELAYED_TAS = 0x00004000,
134 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
135 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
136 SCF_COMPARE_AND_WRITE = 0x00080000,
137 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
138 SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000,
139 SCF_ACK_KREF = 0x00400000,
140 SCF_USE_CPUID = 0x00800000,
141 SCF_TASK_ATTR_SET = 0x01000000,
145 * Used by transport_send_check_condition_and_sense()
146 * to signal which ASC/ASCQ sense payload should be built.
148 typedef unsigned __bitwise sense_reason_t;
150 enum tcm_sense_reason_table {
151 #define R(x) (__force sense_reason_t )(x)
152 TCM_NO_SENSE = R(0x00),
153 TCM_NON_EXISTENT_LUN = R(0x01),
154 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
155 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
156 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
157 TCM_SERVICE_CRC_ERROR = R(0x05),
158 TCM_SNACK_REJECTED = R(0x06),
159 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
160 TCM_INVALID_CDB_FIELD = R(0x08),
161 TCM_INVALID_PARAMETER_LIST = R(0x09),
162 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
163 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
164 TCM_WRITE_PROTECTED = R(0x0c),
165 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
166 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
167 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
168 TCM_RESERVATION_CONFLICT = R(0x10),
169 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
170 TCM_OUT_OF_RESOURCES = R(0x12),
171 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
172 TCM_MISCOMPARE_VERIFY = R(0x14),
173 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
174 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
175 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
176 TCM_COPY_TARGET_DEVICE_NOT_REACHABLE = R(0x18),
180 enum target_sc_flags_table {
181 TARGET_SCF_BIDI_OP = 0x01,
182 TARGET_SCF_ACK_KREF = 0x02,
183 TARGET_SCF_UNKNOWN_SIZE = 0x04,
184 TARGET_SCF_USE_CPUID = 0x08,
187 /* fabric independent task management function values */
188 enum tcm_tmreq_table {
190 TMR_ABORT_TASK_SET = 2,
192 TMR_CLEAR_TASK_SET = 4,
194 TMR_TARGET_WARM_RESET = 6,
195 TMR_TARGET_COLD_RESET = 7,
198 /* fabric independent task management response values */
199 enum tcm_tmrsp_table {
200 TMR_FUNCTION_FAILED = 0,
201 TMR_FUNCTION_COMPLETE = 1,
202 TMR_TASK_DOES_NOT_EXIST = 2,
203 TMR_LUN_DOES_NOT_EXIST = 3,
204 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
205 TMR_FUNCTION_REJECTED = 5,
209 * Used for target SCSI statistics
214 SCSI_AUTH_INTR_INDEX,
220 struct t10_alua_lba_map_member {
221 struct list_head lba_map_mem_list;
222 int lba_map_mem_alua_state;
223 int lba_map_mem_alua_pg_id;
226 struct t10_alua_lba_map {
227 u64 lba_map_first_lba;
228 u64 lba_map_last_lba;
229 struct list_head lba_map_list;
230 struct list_head lba_map_mem_list;
234 /* ALUA Target Port Group ID */
235 u16 alua_tg_pt_gps_counter;
236 u32 alua_tg_pt_gps_count;
237 /* Referrals support */
238 spinlock_t lba_map_lock;
239 u32 lba_map_segment_size;
240 u32 lba_map_segment_multiplier;
241 struct list_head lba_map_list;
242 spinlock_t tg_pt_gps_lock;
243 struct se_device *t10_dev;
244 /* Used for default ALUA Target Port Group */
245 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
246 /* Used for default ALUA Target Port Group ConfigFS group */
247 struct config_group alua_tg_pt_gps_group;
248 struct list_head tg_pt_gps_list;
251 struct t10_alua_lu_gp {
255 atomic_t lu_gp_ref_cnt;
256 spinlock_t lu_gp_lock;
257 struct config_group lu_gp_group;
258 struct list_head lu_gp_node;
259 struct list_head lu_gp_mem_list;
262 struct t10_alua_lu_gp_member {
264 atomic_t lu_gp_mem_ref_cnt;
265 spinlock_t lu_gp_mem_lock;
266 struct t10_alua_lu_gp *lu_gp;
267 struct se_device *lu_gp_mem_dev;
268 struct list_head lu_gp_mem_list;
271 struct t10_alua_tg_pt_gp {
273 int tg_pt_gp_valid_id;
274 int tg_pt_gp_alua_supported_states;
275 int tg_pt_gp_alua_pending_state;
276 int tg_pt_gp_alua_previous_state;
277 int tg_pt_gp_alua_access_status;
278 int tg_pt_gp_alua_access_type;
279 int tg_pt_gp_nonop_delay_msecs;
280 int tg_pt_gp_trans_delay_msecs;
281 int tg_pt_gp_implicit_trans_secs;
283 int tg_pt_gp_write_metadata;
284 u32 tg_pt_gp_members;
285 atomic_t tg_pt_gp_alua_access_state;
286 atomic_t tg_pt_gp_ref_cnt;
287 spinlock_t tg_pt_gp_lock;
288 struct mutex tg_pt_gp_md_mutex;
289 struct se_device *tg_pt_gp_dev;
290 struct config_group tg_pt_gp_group;
291 struct list_head tg_pt_gp_list;
292 struct list_head tg_pt_gp_lun_list;
293 struct se_lun *tg_pt_gp_alua_lun;
294 struct se_node_acl *tg_pt_gp_alua_nacl;
295 struct delayed_work tg_pt_gp_transition_work;
296 struct completion *tg_pt_gp_transition_complete;
300 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
301 int protocol_identifier_set;
302 u32 protocol_identifier;
303 u32 device_identifier_code_set;
305 u32 device_identifier_type;
306 struct list_head vpd_list;
313 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
314 spinlock_t t10_vpd_lock;
315 struct se_device *t10_dev;
316 struct config_group t10_wwn_group;
317 struct list_head t10_vpd_list;
320 struct t10_pr_registration {
321 /* Used for fabrics that contain WWN+ISID */
322 #define PR_REG_ISID_LEN 16
323 /* PR_REG_ISID_LEN + ',i,0x' */
324 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
325 char pr_reg_isid[PR_REG_ISID_LEN];
326 /* Used during APTPL metadata reading */
327 #define PR_APTPL_MAX_IPORT_LEN 256
328 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
329 /* Used during APTPL metadata reading */
330 #define PR_APTPL_MAX_TPORT_LEN 256
331 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
334 /* Reservation effects all target ports */
335 int pr_reg_all_tg_pt;
336 /* Activate Persistence across Target Power Loss */
341 /* Used for fabric initiator WWPNs using a ISID */
342 bool isid_present_at_reg;
343 u64 pr_res_mapped_lun;
344 u64 pr_aptpl_target_lun;
346 u32 pr_res_generation;
349 atomic_t pr_res_holders;
350 struct se_node_acl *pr_reg_nacl;
351 /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */
352 struct se_dev_entry *pr_reg_deve;
353 struct list_head pr_reg_list;
354 struct list_head pr_reg_abort_list;
355 struct list_head pr_reg_aptpl_list;
356 struct list_head pr_reg_atp_list;
357 struct list_head pr_reg_atp_mem_list;
360 struct t10_reservation {
361 /* Reservation effects all target ports */
363 /* Activate Persistence across Target Power Loss enabled
366 #define PR_APTPL_BUF_LEN 262144
368 spinlock_t registration_lock;
369 spinlock_t aptpl_reg_lock;
371 * This will always be set by one individual I_T Nexus.
372 * However with all_tg_pt=1, other I_T Nexus from the
373 * same initiator can access PR reg/res info on a different
376 * There is also the 'All Registrants' case, where there is
377 * a single *pr_res_holder of the reservation, but all
378 * registrations are considered reservation holders.
380 struct se_node_acl *pr_res_holder;
381 struct list_head registration_list;
382 struct list_head aptpl_reg_list;
386 /* Task Management function to be performed */
388 /* Task Management response to send */
391 /* Reference to ITT that Task Mgmt should be performed */
393 void *fabric_tmr_ptr;
394 struct se_cmd *task_cmd;
395 struct se_device *tmr_dev;
396 struct se_lun *tmr_lun;
397 struct list_head tmr_list;
400 enum target_prot_op {
401 TARGET_PROT_NORMAL = 0,
402 TARGET_PROT_DIN_INSERT = (1 << 0),
403 TARGET_PROT_DOUT_INSERT = (1 << 1),
404 TARGET_PROT_DIN_STRIP = (1 << 2),
405 TARGET_PROT_DOUT_STRIP = (1 << 3),
406 TARGET_PROT_DIN_PASS = (1 << 4),
407 TARGET_PROT_DOUT_PASS = (1 << 5),
410 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
411 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
412 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
414 enum target_prot_type {
415 TARGET_DIF_TYPE0_PROT,
416 TARGET_DIF_TYPE1_PROT,
417 TARGET_DIF_TYPE2_PROT,
418 TARGET_DIF_TYPE3_PROT,
421 enum target_core_dif_check {
422 TARGET_DIF_CHECK_GUARD = 0x1 << 0,
423 TARGET_DIF_CHECK_APPTAG = 0x1 << 1,
424 TARGET_DIF_CHECK_REFTAG = 0x1 << 2,
427 /* for sam_task_attr */
428 #define TCM_SIMPLE_TAG 0x20
429 #define TCM_HEAD_TAG 0x21
430 #define TCM_ORDERED_TAG 0x22
431 #define TCM_ACA_TAG 0x24
434 /* SAM response code being sent to initiator */
438 u16 scsi_sense_length;
439 unsigned cmd_wait_set:1;
440 unsigned unknown_data_length:1;
442 u64 tag; /* SAM command identifier aka task tag */
443 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
444 int alua_nonop_delay;
445 /* See include/linux/dma-mapping.h */
446 enum dma_data_direction data_direction;
447 /* For SAM Task Attribute */
449 /* Used for se_sess->sess_tag_pool */
450 unsigned int map_tag;
451 /* Transport protocol dependent state, see transport_state_table */
452 enum transport_state_table t_state;
453 /* See se_cmd_flags_table */
455 /* Total size in bytes associated with command */
459 /* Persistent Reservation key */
461 /* Used for sense data */
463 struct list_head se_delayed_node;
464 struct list_head se_qf_node;
465 struct se_device *se_dev;
466 struct se_lun *se_lun;
467 /* Only used for internal passthrough and legacy TCM fabric modules */
468 struct se_session *se_sess;
469 struct se_tmr_req *se_tmr_req;
470 struct list_head se_cmd_list;
471 struct completion cmd_wait_comp;
472 const struct target_core_fabric_ops *se_tfo;
473 sense_reason_t (*execute_cmd)(struct se_cmd *);
474 sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *);
477 unsigned char *t_task_cdb;
478 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
479 unsigned long long t_task_lba;
480 unsigned int t_task_nolb;
481 unsigned int transport_state;
482 #define CMD_T_ABORTED (1 << 0)
483 #define CMD_T_ACTIVE (1 << 1)
484 #define CMD_T_COMPLETE (1 << 2)
485 #define CMD_T_SENT (1 << 4)
486 #define CMD_T_STOP (1 << 5)
487 #define CMD_T_DEV_ACTIVE (1 << 7)
488 #define CMD_T_BUSY (1 << 9)
489 #define CMD_T_TAS (1 << 10)
490 #define CMD_T_FABRIC_STOP (1 << 11)
491 spinlock_t t_state_lock;
492 struct kref cmd_kref;
493 struct completion t_transport_stop_comp;
495 struct work_struct work;
497 struct scatterlist *t_data_sg;
498 struct scatterlist *t_data_sg_orig;
499 unsigned int t_data_nents;
500 unsigned int t_data_nents_orig;
502 struct scatterlist *t_bidi_data_sg;
503 unsigned int t_bidi_data_nents;
505 /* Used for lun->lun_ref counting */
508 struct list_head state_list;
510 /* backend private data */
513 /* DIF related members */
514 enum target_prot_op prot_op;
515 enum target_prot_type prot_type;
520 struct scatterlist *t_prot_sg;
521 unsigned int t_prot_nents;
522 sense_reason_t pi_err;
530 struct list_head ua_nacl_list;
534 char initiatorname[TRANSPORT_IQN_LEN];
535 /* Used to signal demo mode created ACL, disabled by default */
536 bool dynamic_node_acl;
539 enum target_prot_type saved_prot_type;
540 #define MAX_ACL_TAG_SIZE 64
541 char acl_tag[MAX_ACL_TAG_SIZE];
542 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
543 atomic_t acl_pr_ref_count;
544 struct hlist_head lun_entry_hlist;
545 struct se_session *nacl_sess;
546 struct se_portal_group *se_tpg;
547 struct mutex lun_entry_mutex;
548 spinlock_t nacl_sess_lock;
549 struct config_group acl_group;
550 struct config_group acl_attrib_group;
551 struct config_group acl_auth_group;
552 struct config_group acl_param_group;
553 struct config_group acl_fabric_stat_group;
554 struct list_head acl_list;
555 struct list_head acl_sess_list;
556 struct completion acl_free_comp;
557 struct kref acl_kref;
560 static inline struct se_node_acl *acl_to_nacl(struct config_item *item)
562 return container_of(to_config_group(item), struct se_node_acl,
566 static inline struct se_node_acl *attrib_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 *auth_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 *param_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 *fabric_stat_to_nacl(struct config_item *item)
586 return container_of(to_config_group(item), struct se_node_acl,
587 acl_fabric_stat_group);
591 unsigned sess_tearing_down:1;
593 enum target_prot_op sup_prot_ops;
594 enum target_prot_type sess_prot_type;
595 struct se_node_acl *se_node_acl;
596 struct se_portal_group *se_tpg;
597 void *fabric_sess_ptr;
598 struct list_head sess_list;
599 struct list_head sess_acl_list;
600 struct list_head sess_cmd_list;
601 struct list_head sess_wait_list;
602 spinlock_t sess_cmd_lock;
604 struct percpu_ida sess_tag_pool;
608 struct se_transform_info;
611 struct se_ml_stat_grps {
612 struct config_group stat_group;
613 struct config_group scsi_auth_intr_group;
614 struct config_group scsi_att_intr_port_group;
619 struct se_node_acl *se_lun_nacl;
620 struct se_lun *se_lun;
621 struct config_group se_lun_group;
622 struct se_ml_stat_grps ml_stat_grps;
625 struct se_dev_entry {
631 atomic_long_t total_cmds;
632 atomic_long_t read_bytes;
633 atomic_long_t write_bytes;
635 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
637 struct completion pr_comp;
638 struct se_lun_acl __rcu *se_lun_acl;
640 struct se_lun __rcu *se_lun;
641 #define DEF_PR_REG_ACTIVE 1
642 unsigned long deve_flags;
643 struct list_head alua_port_list;
644 struct list_head lun_link;
645 struct list_head ua_list;
646 struct hlist_node link;
647 struct rcu_head rcu_head;
650 struct se_dev_attrib {
651 int emulate_model_alias;
653 int emulate_fua_write;
654 int emulate_fua_read;
655 int emulate_write_cache;
656 int emulate_ua_intlck_ctrl;
663 enum target_prot_type pi_prot_type;
664 enum target_prot_type hw_pi_prot_type;
665 int enforce_pr_isids;
668 int emulate_rest_reord;
669 int unmap_zeroes_data;
676 u32 max_unmap_lba_count;
677 u32 max_unmap_block_desc_count;
678 u32 unmap_granularity;
679 u32 unmap_granularity_alignment;
680 u32 max_write_same_len;
681 u32 max_bytes_per_io;
682 struct se_device *da_dev;
683 struct config_group da_group;
686 struct se_port_stat_grps {
687 struct config_group stat_group;
688 struct config_group scsi_port_group;
689 struct config_group scsi_tgt_port_group;
690 struct config_group scsi_transport_group;
693 struct scsi_port_stats {
694 atomic_long_t cmd_pdus;
695 atomic_long_t tx_data_octets;
696 atomic_long_t rx_data_octets;
701 #define SE_LUN_LINK_MAGIC 0xffff7771
706 /* RELATIVE TARGET PORT IDENTIFER */
708 atomic_t lun_acl_count;
709 struct se_device __rcu *lun_se_dev;
711 struct list_head lun_deve_list;
712 spinlock_t lun_deve_lock;
715 int lun_tg_pt_secondary_stat;
716 int lun_tg_pt_secondary_write_md;
717 atomic_t lun_tg_pt_secondary_offline;
718 struct mutex lun_tg_pt_md_mutex;
720 /* ALUA target port group linkage */
721 struct list_head lun_tg_pt_gp_link;
722 struct t10_alua_tg_pt_gp *lun_tg_pt_gp;
723 spinlock_t lun_tg_pt_gp_lock;
725 struct se_portal_group *lun_tpg;
726 struct scsi_port_stats lun_stats;
727 struct config_group lun_group;
728 struct se_port_stat_grps port_stat_grps;
729 struct completion lun_ref_comp;
730 struct percpu_ref lun_ref;
731 struct list_head lun_dev_link;
732 struct hlist_node link;
733 struct rcu_head rcu_head;
736 struct se_dev_stat_grps {
737 struct config_group stat_group;
738 struct config_group scsi_dev_group;
739 struct config_group scsi_tgt_dev_group;
740 struct config_group scsi_lu_group;
744 #define SE_DEV_LINK_MAGIC 0xfeeddeef
746 /* RELATIVE TARGET PORT IDENTIFER Counter */
747 u16 dev_rpti_counter;
748 /* Used for SAM Task Attribute ordering */
749 u32 dev_cur_ordered_id;
751 #define DF_CONFIGURED 0x00000001
752 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
753 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
754 #define DF_USING_UDEV_PATH 0x00000008
755 #define DF_USING_ALIAS 0x00000010
756 #define DF_READ_ONLY 0x00000020
757 /* Physical device queue depth */
759 /* Used for SPC-2 reservations enforce of ISIDs */
760 u64 dev_res_bin_isid;
761 /* Pointer to transport specific device structure */
764 atomic_long_t num_resets;
765 atomic_long_t num_cmds;
766 atomic_long_t read_bytes;
767 atomic_long_t write_bytes;
768 /* Active commands on this virtual SE device */
769 atomic_t simple_cmds;
770 atomic_t dev_ordered_sync;
771 atomic_t dev_qf_count;
773 spinlock_t delayed_cmd_lock;
774 spinlock_t execute_task_lock;
775 spinlock_t dev_reservation_lock;
776 unsigned int dev_reservation_flags;
777 #define DRF_SPC2_RESERVATIONS 0x00000001
778 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
779 spinlock_t se_port_lock;
780 spinlock_t se_tmr_lock;
781 spinlock_t qf_cmd_lock;
782 struct semaphore caw_sem;
783 /* Used for legacy SPC-2 reservationsa */
784 struct se_node_acl *dev_reserved_node_acl;
785 /* Used for ALUA Logical Unit Group membership */
786 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
787 /* Used for SPC-3 Persistent Reservations */
788 struct t10_pr_registration *dev_pr_res_holder;
789 struct list_head dev_sep_list;
790 struct list_head dev_tmr_list;
791 struct workqueue_struct *tmr_wq;
792 struct work_struct qf_work_queue;
793 struct list_head delayed_cmd_list;
794 struct list_head state_list;
795 struct list_head qf_cmd_list;
796 struct list_head g_dev_node;
797 /* Pointer to associated SE HBA */
798 struct se_hba *se_hba;
799 /* T10 Inquiry and VPD WWN Information */
800 struct t10_wwn t10_wwn;
801 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
802 struct t10_alua t10_alua;
803 /* T10 SPC-2 + SPC-3 Reservations */
804 struct t10_reservation t10_pr;
805 struct se_dev_attrib dev_attrib;
806 struct config_group dev_group;
807 struct config_group dev_pr_group;
808 struct se_dev_stat_grps dev_stat_grps;
809 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
810 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
811 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
812 unsigned char udev_path[SE_UDEV_PATH_LEN];
813 /* Pointer to template of function pointers for transport */
814 const struct target_backend_ops *transport;
815 /* Linked list for struct se_hba struct se_device list */
816 struct list_head dev_list;
817 struct se_lun xcopy_lun;
818 /* Protection Information */
820 /* For se_lun->lun_se_dev RCU read-side critical access */
822 struct rcu_head rcu_head;
828 /* See hba_flags_table */
830 /* Virtual iSCSI devices attached. */
833 /* Pointer to transport specific host structure. */
835 struct list_head hba_node;
836 spinlock_t device_lock;
837 struct config_group hba_group;
838 struct mutex hba_access_mutex;
839 struct target_backend *backend;
843 struct se_portal_group *tpg_np_parent;
844 struct config_group tpg_np_group;
847 static inline struct se_tpg_np *to_tpg_np(struct config_item *item)
849 return container_of(to_config_group(item), struct se_tpg_np,
853 struct se_portal_group {
855 * PROTOCOL IDENTIFIER value per SPC4, 7.5.1.
857 * Negative values can be used by fabric drivers for internal use TPGs.
860 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
861 atomic_t tpg_pr_ref_count;
862 /* Spinlock for adding/removing ACLed Nodes */
863 struct mutex acl_node_mutex;
864 /* Spinlock for adding/removing sessions */
865 spinlock_t session_lock;
866 struct mutex tpg_lun_mutex;
867 struct list_head se_tpg_node;
868 /* linked list for initiator ACL list */
869 struct list_head acl_node_list;
870 struct hlist_head tpg_lun_hlist;
871 struct se_lun *tpg_virt_lun0;
872 /* List of TCM sessions associated wth this TPG */
873 struct list_head tpg_sess_list;
874 /* Pointer to $FABRIC_MOD dependent code */
875 const struct target_core_fabric_ops *se_tpg_tfo;
876 struct se_wwn *se_tpg_wwn;
877 struct config_group tpg_group;
878 struct config_group tpg_lun_group;
879 struct config_group tpg_np_group;
880 struct config_group tpg_acl_group;
881 struct config_group tpg_attrib_group;
882 struct config_group tpg_auth_group;
883 struct config_group tpg_param_group;
886 static inline struct se_portal_group *to_tpg(struct config_item *item)
888 return container_of(to_config_group(item), struct se_portal_group,
892 static inline struct se_portal_group *attrib_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 *auth_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 *param_to_tpg(struct config_item *item)
906 return container_of(to_config_group(item), struct se_portal_group,
911 struct target_fabric_configfs *wwn_tf;
912 struct config_group wwn_group;
913 struct config_group fabric_stat_group;
916 static inline void atomic_inc_mb(atomic_t *v)
918 smp_mb__before_atomic();
920 smp_mb__after_atomic();
923 static inline void atomic_dec_mb(atomic_t *v)
925 smp_mb__before_atomic();
927 smp_mb__after_atomic();
930 #endif /* TARGET_CORE_BASE_H */