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 <scsi/scsi_cmnd.h>
12 #define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml"
14 /* Maximum Number of LUNs per Target Portal Group */
15 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
16 #define TRANSPORT_MAX_LUNS_PER_TPG 256
18 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
20 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
21 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
22 * 16-byte CDBs by default and require an extra allocation for
23 * 32-byte CDBs to because of legacy issues.
25 * Within TCM Core there are no such legacy limitiations, so we go ahead
26 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
27 * within all TCM Core and subsystem plugin code.
29 #define TCM_MAX_COMMAND_SIZE 32
31 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
32 * defined 96, but the real limit is 252 (or 260 including the header)
34 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
35 /* Used by transport_send_check_condition_and_sense() */
36 #define SPC_SENSE_KEY_OFFSET 2
37 #define SPC_ASC_KEY_OFFSET 12
38 #define SPC_ASCQ_KEY_OFFSET 13
39 #define TRANSPORT_IQN_LEN 224
40 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
41 #define LU_GROUP_NAME_BUF 256
42 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
43 #define TG_PT_GROUP_NAME_BUF 256
44 /* Used to parse VPD into struct t10_vpd */
45 #define VPD_TMP_BUF_SIZE 128
46 /* Used by transport_generic_cmd_sequencer() */
47 #define READ_BLOCK_LEN 6
48 #define READ_CAP_LEN 8
49 #define READ_POSITION_LEN 20
50 #define INQUIRY_LEN 36
51 /* Used by transport_get_inquiry_vpd_serial() */
52 #define INQUIRY_VPD_SERIAL_LEN 254
53 /* Used by transport_get_inquiry_vpd_device_ident() */
54 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
56 /* struct se_hba->hba_flags */
57 enum hba_flags_table {
58 HBA_FLAGS_INTERNAL_USE = 0x01,
59 HBA_FLAGS_PSCSI_MODE = 0x02,
62 /* struct se_lun->lun_status */
63 enum transport_lun_status_table {
64 TRANSPORT_LUN_STATUS_FREE = 0,
65 TRANSPORT_LUN_STATUS_ACTIVE = 1,
68 /* struct se_portal_group->se_tpg_type */
69 enum transport_tpg_type_table {
70 TRANSPORT_TPG_TYPE_NORMAL = 0,
71 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
74 /* Used for generate timer flags */
78 TF_TIMEOUT = (1 << 2),
79 TF_REQUEST_STOP = (1 << 3),
82 /* Special transport agnostic struct se_cmd->t_states */
83 enum transport_state_table {
84 TRANSPORT_NO_STATE = 0,
85 TRANSPORT_NEW_CMD = 1,
86 TRANSPORT_DEFERRED_CMD = 2,
87 TRANSPORT_WRITE_PENDING = 3,
88 TRANSPORT_PROCESS_WRITE = 4,
89 TRANSPORT_PROCESSING = 5,
90 TRANSPORT_COMPLETE_OK = 6,
91 TRANSPORT_COMPLETE_FAILURE = 7,
92 TRANSPORT_COMPLETE_TIMEOUT = 8,
93 TRANSPORT_PROCESS_TMR = 9,
94 TRANSPORT_TMR_COMPLETE = 10,
95 TRANSPORT_ISTATE_PROCESSING = 11,
96 TRANSPORT_ISTATE_PROCESSED = 12,
99 TRANSPORT_NEW_CMD_MAP = 16,
100 TRANSPORT_FREE_CMD_INTR = 17,
101 TRANSPORT_COMPLETE_QF_WP = 18,
102 TRANSPORT_COMPLETE_QF_OK = 19,
105 /* Used for struct se_cmd->se_cmd_flags */
106 enum se_cmd_flags_table {
107 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
108 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
109 SCF_EMULATED_TASK_SENSE = 0x00000004,
110 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
111 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
112 SCF_SCSI_NON_DATA_CDB = 0x00000040,
113 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
114 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
115 SCF_SE_CMD_FAILED = 0x00000400,
116 SCF_SE_LUN_CMD = 0x00000800,
117 SCF_SE_ALLOW_EOO = 0x00001000,
118 SCF_SENT_CHECK_CONDITION = 0x00004000,
119 SCF_OVERFLOW_BIT = 0x00008000,
120 SCF_UNDERFLOW_BIT = 0x00010000,
121 SCF_SENT_DELAYED_TAS = 0x00020000,
122 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
123 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
124 SCF_UNUSED = 0x00100000,
125 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
126 SCF_EMULATE_CDB_ASYNC = 0x01000000,
129 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
130 enum transport_lunflags_table {
131 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
132 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
133 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
134 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
137 /* struct se_device->dev_status */
138 enum transport_device_status_table {
139 TRANSPORT_DEVICE_ACTIVATED = 0x01,
140 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
141 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
142 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
143 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
144 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
148 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
149 * to signal which ASC/ASCQ sense payload should be built.
151 enum tcm_sense_reason_table {
152 TCM_NON_EXISTENT_LUN = 0x01,
153 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
154 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
155 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
156 TCM_SERVICE_CRC_ERROR = 0x05,
157 TCM_SNACK_REJECTED = 0x06,
158 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
159 TCM_INVALID_CDB_FIELD = 0x08,
160 TCM_INVALID_PARAMETER_LIST = 0x09,
161 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
162 TCM_UNKNOWN_MODE_PAGE = 0x0b,
163 TCM_WRITE_PROTECTED = 0x0c,
164 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
165 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
166 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
170 atomic_t obj_access_count;
171 } ____cacheline_aligned;
174 * Used by TCM Core internally to signal if ALUA emulation is enabled or
175 * disabled, or running in with TCM/pSCSI passthrough mode
178 SPC_ALUA_PASSTHROUGH,
184 * Used by TCM Core internally to signal if SAM Task Attribute emulation
185 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
188 SAM_TASK_ATTR_PASSTHROUGH,
189 SAM_TASK_ATTR_UNTAGGED,
190 SAM_TASK_ATTR_EMULATED
191 } t10_task_attr_index_t;
194 * Used for target SCSI statistics
199 SCSI_AUTH_INTR_INDEX,
206 t10_alua_index_t alua_type;
207 /* ALUA Target Port Group ID */
208 u16 alua_tg_pt_gps_counter;
209 u32 alua_tg_pt_gps_count;
210 spinlock_t tg_pt_gps_lock;
211 struct se_subsystem_dev *t10_sub_dev;
212 /* Used for default ALUA Target Port Group */
213 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
214 /* Used for default ALUA Target Port Group ConfigFS group */
215 struct config_group alua_tg_pt_gps_group;
216 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
217 struct list_head tg_pt_gps_list;
218 } ____cacheline_aligned;
220 struct t10_alua_lu_gp {
224 atomic_t lu_gp_shutdown;
225 atomic_t lu_gp_ref_cnt;
226 spinlock_t lu_gp_lock;
227 struct config_group lu_gp_group;
228 struct list_head lu_gp_node;
229 struct list_head lu_gp_mem_list;
230 } ____cacheline_aligned;
232 struct t10_alua_lu_gp_member {
234 atomic_t lu_gp_mem_ref_cnt;
235 spinlock_t lu_gp_mem_lock;
236 struct t10_alua_lu_gp *lu_gp;
237 struct se_device *lu_gp_mem_dev;
238 struct list_head lu_gp_mem_list;
239 } ____cacheline_aligned;
241 struct t10_alua_tg_pt_gp {
243 int tg_pt_gp_valid_id;
244 int tg_pt_gp_alua_access_status;
245 int tg_pt_gp_alua_access_type;
246 int tg_pt_gp_nonop_delay_msecs;
247 int tg_pt_gp_trans_delay_msecs;
249 int tg_pt_gp_write_metadata;
250 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
251 #define ALUA_MD_BUF_LEN 1024
252 u32 tg_pt_gp_md_buf_len;
253 u32 tg_pt_gp_members;
254 atomic_t tg_pt_gp_alua_access_state;
255 atomic_t tg_pt_gp_ref_cnt;
256 spinlock_t tg_pt_gp_lock;
257 struct mutex tg_pt_gp_md_mutex;
258 struct se_subsystem_dev *tg_pt_gp_su_dev;
259 struct config_group tg_pt_gp_group;
260 struct list_head tg_pt_gp_list;
261 struct list_head tg_pt_gp_mem_list;
262 } ____cacheline_aligned;
264 struct t10_alua_tg_pt_gp_member {
266 atomic_t tg_pt_gp_mem_ref_cnt;
267 spinlock_t tg_pt_gp_mem_lock;
268 struct t10_alua_tg_pt_gp *tg_pt_gp;
269 struct se_port *tg_pt;
270 struct list_head tg_pt_gp_mem_list;
271 } ____cacheline_aligned;
274 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
275 int protocol_identifier_set;
276 u32 protocol_identifier;
277 u32 device_identifier_code_set;
279 u32 device_identifier_type;
280 struct list_head vpd_list;
281 } ____cacheline_aligned;
287 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
288 spinlock_t t10_vpd_lock;
289 struct se_subsystem_dev *t10_sub_dev;
290 struct config_group t10_wwn_group;
291 struct list_head t10_vpd_list;
292 } ____cacheline_aligned;
296 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
297 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
303 SPC3_PERSISTENT_RESERVATIONS
304 } t10_reservations_index_t;
306 struct t10_pr_registration {
307 /* Used for fabrics that contain WWN+ISID */
308 #define PR_REG_ISID_LEN 16
309 /* PR_REG_ISID_LEN + ',i,0x' */
310 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
311 char pr_reg_isid[PR_REG_ISID_LEN];
312 /* Used during APTPL metadata reading */
313 #define PR_APTPL_MAX_IPORT_LEN 256
314 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
315 /* Used during APTPL metadata reading */
316 #define PR_APTPL_MAX_TPORT_LEN 256
317 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
318 /* For writing out live meta data */
319 unsigned char *pr_aptpl_buf;
322 /* Reservation effects all target ports */
323 int pr_reg_all_tg_pt;
324 /* Activate Persistence across Target Power Loss */
329 /* Used for fabric initiator WWPNs using a ISID */
330 bool isid_present_at_reg;
331 u32 pr_res_mapped_lun;
332 u32 pr_aptpl_target_lun;
333 u32 pr_res_generation;
336 atomic_t pr_res_holders;
337 struct se_node_acl *pr_reg_nacl;
338 struct se_dev_entry *pr_reg_deve;
339 struct se_lun *pr_reg_tg_pt_lun;
340 struct list_head pr_reg_list;
341 struct list_head pr_reg_abort_list;
342 struct list_head pr_reg_aptpl_list;
343 struct list_head pr_reg_atp_list;
344 struct list_head pr_reg_atp_mem_list;
345 } ____cacheline_aligned;
348 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
349 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
350 * core_setup_reservations()
352 struct t10_reservation_ops {
353 int (*t10_reservation_check)(struct se_cmd *, u32 *);
354 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
355 int (*t10_pr_register)(struct se_cmd *);
356 int (*t10_pr_clear)(struct se_cmd *);
359 struct t10_reservation {
360 /* Reservation effects all target ports */
362 /* Activate Persistence across Target Power Loss enabled
365 /* Used by struct t10_reservation->pr_aptpl_buf_len */
366 #define PR_APTPL_BUF_LEN 8192
367 u32 pr_aptpl_buf_len;
369 t10_reservations_index_t res_type;
370 spinlock_t registration_lock;
371 spinlock_t aptpl_reg_lock;
373 * This will always be set by one individual I_T Nexus.
374 * However with all_tg_pt=1, other I_T Nexus from the
375 * same initiator can access PR reg/res info on a different
378 * There is also the 'All Registrants' case, where there is
379 * a single *pr_res_holder of the reservation, but all
380 * registrations are considered reservation holders.
382 struct se_node_acl *pr_res_holder;
383 struct list_head registration_list;
384 struct list_head aptpl_reg_list;
385 struct t10_reservation_ops pr_ops;
386 } ____cacheline_aligned;
388 struct se_queue_req {
391 struct list_head qr_list;
392 } ____cacheline_aligned;
394 struct se_queue_obj {
396 spinlock_t cmd_queue_lock;
397 struct list_head qobj_list;
398 wait_queue_head_t thread_wq;
399 } ____cacheline_aligned;
402 unsigned long long task_lba;
405 struct se_cmd *task_se_cmd;
406 struct scatterlist *task_sg;
407 struct scatterlist *task_sg_bidi;
412 int task_error_status;
413 enum dma_data_direction task_data_direction;
414 atomic_t task_state_active;
415 struct timer_list task_timer;
416 struct list_head t_list;
417 struct list_head t_execute_list;
418 struct list_head t_state_list;
419 struct completion task_stop_comp;
420 } ____cacheline_aligned;
423 /* SAM response code being sent to initiator */
427 u8 scsi_sense_reason;
428 u16 scsi_sense_length;
429 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
430 int alua_nonop_delay;
431 /* See include/linux/dma-mapping.h */
432 enum dma_data_direction data_direction;
433 /* For SAM Task Attribute */
435 /* Transport protocol dependent state, see transport_state_table */
436 enum transport_state_table t_state;
437 /* Transport protocol dependent state for out of order CmdSNs */
438 int deferred_t_state;
439 /* Transport specific error status */
440 int transport_error_status;
441 /* See se_cmd_flags_table */
444 /* Total size in bytes associated with command */
446 /* SCSI Presented Data Transfer Length */
450 /* Persistent Reservation key */
452 atomic_t transport_sent;
453 /* Used for sense data */
455 struct list_head se_delayed_node;
456 struct list_head se_ordered_node;
457 struct list_head se_lun_node;
458 struct list_head se_qf_node;
459 struct se_device *se_dev;
460 struct se_dev_entry *se_deve;
461 struct se_device *se_obj_ptr;
462 struct se_device *se_orig_obj_ptr;
463 struct se_lun *se_lun;
464 /* Only used for internal passthrough and legacy TCM fabric modules */
465 struct se_session *se_sess;
466 struct se_tmr_req *se_tmr_req;
467 struct list_head se_queue_node;
468 struct target_core_fabric_ops *se_tfo;
469 int (*transport_emulate_cdb)(struct se_cmd *);
470 void (*transport_complete_callback)(struct se_cmd *);
472 unsigned char *t_task_cdb;
473 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
474 unsigned long long t_task_lba;
478 u32 t_tasks_sg_chained_no;
481 atomic_t t_task_cdbs_left;
482 atomic_t t_task_cdbs_ex_left;
483 atomic_t t_task_cdbs_timeout_left;
484 atomic_t t_task_cdbs_sent;
485 atomic_t t_transport_aborted;
486 atomic_t t_transport_active;
487 atomic_t t_transport_complete;
488 atomic_t t_transport_queue_active;
489 atomic_t t_transport_sent;
490 atomic_t t_transport_stop;
491 atomic_t t_transport_timeout;
492 atomic_t transport_dev_active;
493 atomic_t transport_lun_active;
494 atomic_t transport_lun_fe_stop;
495 atomic_t transport_lun_stop;
496 spinlock_t t_state_lock;
497 struct completion t_transport_stop_comp;
498 struct completion transport_lun_fe_stop_comp;
499 struct completion transport_lun_stop_comp;
500 struct scatterlist *t_tasks_sg_chained;
503 * Used for pre-registered fabric SGL passthrough WRITE and READ
504 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
505 * and other HW target mode fabric modules.
507 struct scatterlist *t_task_pt_sgl;
508 u32 t_task_pt_sgl_num;
510 struct scatterlist *t_data_sg;
511 unsigned int t_data_nents;
512 struct scatterlist *t_bidi_data_sg;
513 unsigned int t_bidi_data_nents;
515 /* Used for BIDI READ */
516 struct list_head t_task_list;
519 } ____cacheline_aligned;
522 /* Task Management function to be preformed */
524 /* Task Management response to send */
527 /* Reference to ITT that Task Mgmt should be preformed */
529 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
531 void *fabric_tmr_ptr;
532 struct se_cmd *task_cmd;
533 struct se_cmd *ref_cmd;
534 struct se_device *tmr_dev;
535 struct se_lun *tmr_lun;
536 struct list_head tmr_list;
537 } ____cacheline_aligned;
542 struct se_node_acl *ua_nacl;
543 struct list_head ua_dev_list;
544 struct list_head ua_nacl_list;
545 } ____cacheline_aligned;
548 char initiatorname[TRANSPORT_IQN_LEN];
549 /* Used to signal demo mode created ACL, disabled by default */
550 bool dynamic_node_acl;
556 spinlock_t stats_lock;
557 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
558 atomic_t acl_pr_ref_count;
559 struct se_dev_entry *device_list;
560 struct se_session *nacl_sess;
561 struct se_portal_group *se_tpg;
562 spinlock_t device_list_lock;
563 spinlock_t nacl_sess_lock;
564 struct config_group acl_group;
565 struct config_group acl_attrib_group;
566 struct config_group acl_auth_group;
567 struct config_group acl_param_group;
568 struct config_group acl_fabric_stat_group;
569 struct config_group *acl_default_groups[5];
570 struct list_head acl_list;
571 struct list_head acl_sess_list;
572 } ____cacheline_aligned;
576 struct se_node_acl *se_node_acl;
577 struct se_portal_group *se_tpg;
578 void *fabric_sess_ptr;
579 struct list_head sess_list;
580 struct list_head sess_acl_list;
581 } ____cacheline_aligned;
584 struct se_transform_info;
587 struct se_ml_stat_grps {
588 struct config_group stat_group;
589 struct config_group scsi_auth_intr_group;
590 struct config_group scsi_att_intr_port_group;
594 char initiatorname[TRANSPORT_IQN_LEN];
596 struct se_node_acl *se_lun_nacl;
597 struct se_lun *se_lun;
598 struct list_head lacl_list;
599 struct config_group se_lun_group;
600 struct se_ml_stat_grps ml_stat_grps;
601 } ____cacheline_aligned;
603 struct se_dev_entry {
604 bool def_pr_registered;
605 /* See transport_lunflags_table */
619 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
620 atomic_t pr_ref_count;
621 struct se_lun_acl *se_lun_acl;
623 struct se_lun *se_lun;
624 struct list_head alua_port_list;
625 struct list_head ua_list;
626 } ____cacheline_aligned;
628 struct se_dev_limits {
629 /* Max supported HW queue depth */
631 /* Max supported virtual queue depth */
633 /* From include/linux/blkdev.h for the other HW/SW limits. */
634 struct queue_limits limits;
635 } ____cacheline_aligned;
637 struct se_dev_attrib {
639 int emulate_fua_write;
640 int emulate_fua_read;
641 int emulate_write_cache;
642 int emulate_ua_intlck_ctrl;
646 int emulate_reservations;
648 int enforce_pr_isids;
650 int emulate_rest_reord;
659 u32 max_unmap_lba_count;
660 u32 max_unmap_block_desc_count;
661 u32 unmap_granularity;
662 u32 unmap_granularity_alignment;
663 struct se_subsystem_dev *da_sub_dev;
664 struct config_group da_group;
665 } ____cacheline_aligned;
667 struct se_dev_stat_grps {
668 struct config_group stat_group;
669 struct config_group scsi_dev_group;
670 struct config_group scsi_tgt_dev_group;
671 struct config_group scsi_lu_group;
674 struct se_subsystem_dev {
675 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
676 #define SE_DEV_ALIAS_LEN 512
677 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
678 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
679 #define SE_UDEV_PATH_LEN 512
680 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
682 struct se_hba *se_dev_hba;
683 struct se_device *se_dev_ptr;
684 struct se_dev_attrib se_dev_attrib;
685 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
686 struct t10_alua t10_alua;
687 /* T10 Inquiry and VPD WWN Information */
688 struct t10_wwn t10_wwn;
689 /* T10 SPC-2 + SPC-3 Reservations */
690 struct t10_reservation t10_pr;
691 spinlock_t se_dev_lock;
693 struct list_head se_dev_node;
694 struct config_group se_dev_group;
695 /* For T10 Reservations */
696 struct config_group se_dev_pr_group;
697 /* For target_core_stat.c groups */
698 struct se_dev_stat_grps dev_stat_grps;
699 } ____cacheline_aligned;
702 /* Set to 1 if thread is NOT sleeping on thread_sem */
704 u8 dev_status_timer_flags;
705 /* RELATIVE TARGET PORT IDENTIFER Counter */
706 u16 dev_rpti_counter;
707 /* Used for SAM Task Attribute ordering */
708 u32 dev_cur_ordered_id;
711 /* See transport_device_status_table */
713 u32 dev_tcq_window_closed;
714 /* Physical device queue depth */
716 /* Used for SPC-2 reservations enforce of ISIDs */
717 u64 dev_res_bin_isid;
718 t10_task_attr_index_t dev_task_attr_type;
719 /* Pointer to transport specific device structure */
727 spinlock_t stats_lock;
728 /* Active commands on this virtual SE device */
729 atomic_t active_cmds;
730 atomic_t simple_cmds;
732 atomic_t dev_ordered_id;
733 atomic_t dev_tur_active;
734 atomic_t execute_tasks;
735 atomic_t dev_status_thr_count;
736 atomic_t dev_hoq_count;
737 atomic_t dev_ordered_sync;
738 atomic_t dev_qf_count;
739 struct se_obj dev_obj;
740 struct se_obj dev_access_obj;
741 struct se_obj dev_export_obj;
742 struct se_queue_obj dev_queue_obj;
743 spinlock_t delayed_cmd_lock;
744 spinlock_t ordered_cmd_lock;
745 spinlock_t execute_task_lock;
746 spinlock_t state_task_lock;
747 spinlock_t dev_alua_lock;
748 spinlock_t dev_reservation_lock;
749 spinlock_t dev_state_lock;
750 spinlock_t dev_status_lock;
751 spinlock_t dev_status_thr_lock;
752 spinlock_t se_port_lock;
753 spinlock_t se_tmr_lock;
754 spinlock_t qf_cmd_lock;
755 /* Used for legacy SPC-2 reservationsa */
756 struct se_node_acl *dev_reserved_node_acl;
757 /* Used for ALUA Logical Unit Group membership */
758 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
759 /* Used for SPC-3 Persistent Reservations */
760 struct t10_pr_registration *dev_pr_res_holder;
761 struct list_head dev_sep_list;
762 struct list_head dev_tmr_list;
763 struct timer_list dev_status_timer;
764 /* Pointer to descriptor for processing thread */
765 struct task_struct *process_thread;
766 pid_t process_thread_pid;
767 struct task_struct *dev_mgmt_thread;
768 struct work_struct qf_work_queue;
769 struct list_head delayed_cmd_list;
770 struct list_head ordered_cmd_list;
771 struct list_head execute_task_list;
772 struct list_head state_task_list;
773 struct list_head qf_cmd_list;
774 /* Pointer to associated SE HBA */
775 struct se_hba *se_hba;
776 struct se_subsystem_dev *se_sub_dev;
777 /* Pointer to template of function pointers for transport */
778 struct se_subsystem_api *transport;
779 /* Linked list for struct se_hba struct se_device list */
780 struct list_head dev_list;
781 /* Linked list for struct se_global->g_se_dev_list */
782 struct list_head g_se_dev_list;
783 } ____cacheline_aligned;
788 /* See hba_flags_table */
790 /* Virtual iSCSI devices attached. */
793 /* Pointer to transport specific host structure. */
795 /* Linked list for struct se_device */
796 struct list_head hba_dev_list;
797 struct list_head hba_node;
798 spinlock_t device_lock;
799 struct config_group hba_group;
800 struct mutex hba_access_mutex;
801 struct se_subsystem_api *transport;
802 } ____cacheline_aligned;
804 struct se_port_stat_grps {
805 struct config_group stat_group;
806 struct config_group scsi_port_group;
807 struct config_group scsi_tgt_port_group;
808 struct config_group scsi_transport_group;
812 /* See transport_lun_status_table */
813 enum transport_lun_status_table lun_status;
817 atomic_t lun_acl_count;
818 spinlock_t lun_acl_lock;
819 spinlock_t lun_cmd_lock;
820 spinlock_t lun_sep_lock;
821 struct completion lun_shutdown_comp;
822 struct list_head lun_cmd_list;
823 struct list_head lun_acl_list;
824 struct se_device *lun_se_dev;
825 struct se_port *lun_sep;
826 struct config_group lun_group;
827 struct se_port_stat_grps port_stat_grps;
828 } ____cacheline_aligned;
830 struct scsi_port_stats {
834 } ____cacheline_aligned;
837 /* RELATIVE TARGET PORT IDENTIFER */
839 int sep_tg_pt_secondary_stat;
840 int sep_tg_pt_secondary_write_md;
842 struct scsi_port_stats sep_stats;
843 /* Used for ALUA Target Port Groups membership */
844 atomic_t sep_tg_pt_gp_active;
845 atomic_t sep_tg_pt_secondary_offline;
846 /* Used for PR ALL_TG_PT=1 */
847 atomic_t sep_tg_pt_ref_cnt;
848 spinlock_t sep_alua_lock;
849 struct mutex sep_tg_pt_md_mutex;
850 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
851 struct se_lun *sep_lun;
852 struct se_portal_group *sep_tpg;
853 struct list_head sep_alua_list;
854 struct list_head sep_list;
855 } ____cacheline_aligned;
858 struct se_portal_group *tpg_np_parent;
859 struct config_group tpg_np_group;
860 } ____cacheline_aligned;
862 struct se_portal_group {
863 /* Type of target portal group, see transport_tpg_type_table */
864 enum transport_tpg_type_table se_tpg_type;
865 /* Number of ACLed Initiator Nodes for this TPG */
867 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
868 atomic_t tpg_pr_ref_count;
869 /* Spinlock for adding/removing ACLed Nodes */
870 spinlock_t acl_node_lock;
871 /* Spinlock for adding/removing sessions */
872 spinlock_t session_lock;
873 spinlock_t tpg_lun_lock;
874 /* Pointer to $FABRIC_MOD portal group */
875 void *se_tpg_fabric_ptr;
876 struct list_head se_tpg_node;
877 /* linked list for initiator ACL list */
878 struct list_head acl_node_list;
879 struct se_lun *tpg_lun_list;
880 struct se_lun tpg_virt_lun0;
881 /* List of TCM sessions associated wth this TPG */
882 struct list_head tpg_sess_list;
883 /* Pointer to $FABRIC_MOD dependent code */
884 struct target_core_fabric_ops *se_tpg_tfo;
885 struct se_wwn *se_tpg_wwn;
886 struct config_group tpg_group;
887 struct config_group *tpg_default_groups[6];
888 struct config_group tpg_lun_group;
889 struct config_group tpg_np_group;
890 struct config_group tpg_acl_group;
891 struct config_group tpg_attrib_group;
892 struct config_group tpg_param_group;
893 } ____cacheline_aligned;
896 struct target_fabric_configfs *wwn_tf;
897 struct config_group wwn_group;
898 struct config_group *wwn_default_groups[2];
899 struct config_group fabric_stat_group;
900 } ____cacheline_aligned;
902 #endif /* TARGET_CORE_BASE_H */