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_REQUEST_STOP = (1 << 2),
81 /* Special transport agnostic struct se_cmd->t_states */
82 enum transport_state_table {
83 TRANSPORT_NO_STATE = 0,
84 TRANSPORT_NEW_CMD = 1,
85 TRANSPORT_WRITE_PENDING = 3,
86 TRANSPORT_PROCESS_WRITE = 4,
87 TRANSPORT_PROCESSING = 5,
88 TRANSPORT_COMPLETE = 6,
89 TRANSPORT_PROCESS_TMR = 9,
90 TRANSPORT_ISTATE_PROCESSING = 11,
91 TRANSPORT_NEW_CMD_MAP = 16,
92 TRANSPORT_COMPLETE_QF_WP = 18,
93 TRANSPORT_COMPLETE_QF_OK = 19,
96 /* Used for struct se_cmd->se_cmd_flags */
97 enum se_cmd_flags_table {
98 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
99 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
100 SCF_EMULATED_TASK_SENSE = 0x00000004,
101 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
102 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
103 SCF_SCSI_NON_DATA_CDB = 0x00000040,
104 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
105 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
106 SCF_FUA = 0x00000200,
107 SCF_SE_LUN_CMD = 0x00000800,
108 SCF_SE_ALLOW_EOO = 0x00001000,
109 SCF_SENT_CHECK_CONDITION = 0x00004000,
110 SCF_OVERFLOW_BIT = 0x00008000,
111 SCF_UNDERFLOW_BIT = 0x00010000,
112 SCF_SENT_DELAYED_TAS = 0x00020000,
113 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
114 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
115 SCF_UNUSED = 0x00100000,
116 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
119 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
120 enum transport_lunflags_table {
121 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
122 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
123 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
124 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
127 /* struct se_device->dev_status */
128 enum transport_device_status_table {
129 TRANSPORT_DEVICE_ACTIVATED = 0x01,
130 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
131 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
132 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
133 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
134 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
138 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
139 * to signal which ASC/ASCQ sense payload should be built.
141 enum tcm_sense_reason_table {
142 TCM_NON_EXISTENT_LUN = 0x01,
143 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
144 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
145 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
146 TCM_SERVICE_CRC_ERROR = 0x05,
147 TCM_SNACK_REJECTED = 0x06,
148 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
149 TCM_INVALID_CDB_FIELD = 0x08,
150 TCM_INVALID_PARAMETER_LIST = 0x09,
151 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
152 TCM_UNKNOWN_MODE_PAGE = 0x0b,
153 TCM_WRITE_PROTECTED = 0x0c,
154 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
155 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
156 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
157 TCM_RESERVATION_CONFLICT = 0x10,
161 atomic_t obj_access_count;
162 } ____cacheline_aligned;
165 * Used by TCM Core internally to signal if ALUA emulation is enabled or
166 * disabled, or running in with TCM/pSCSI passthrough mode
169 SPC_ALUA_PASSTHROUGH,
175 * Used by TCM Core internally to signal if SAM Task Attribute emulation
176 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
179 SAM_TASK_ATTR_PASSTHROUGH,
180 SAM_TASK_ATTR_UNTAGGED,
181 SAM_TASK_ATTR_EMULATED
182 } t10_task_attr_index_t;
185 * Used for target SCSI statistics
190 SCSI_AUTH_INTR_INDEX,
197 t10_alua_index_t alua_type;
198 /* ALUA Target Port Group ID */
199 u16 alua_tg_pt_gps_counter;
200 u32 alua_tg_pt_gps_count;
201 spinlock_t tg_pt_gps_lock;
202 struct se_subsystem_dev *t10_sub_dev;
203 /* Used for default ALUA Target Port Group */
204 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
205 /* Used for default ALUA Target Port Group ConfigFS group */
206 struct config_group alua_tg_pt_gps_group;
207 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
208 struct list_head tg_pt_gps_list;
209 } ____cacheline_aligned;
211 struct t10_alua_lu_gp {
215 atomic_t lu_gp_shutdown;
216 atomic_t lu_gp_ref_cnt;
217 spinlock_t lu_gp_lock;
218 struct config_group lu_gp_group;
219 struct list_head lu_gp_node;
220 struct list_head lu_gp_mem_list;
221 } ____cacheline_aligned;
223 struct t10_alua_lu_gp_member {
225 atomic_t lu_gp_mem_ref_cnt;
226 spinlock_t lu_gp_mem_lock;
227 struct t10_alua_lu_gp *lu_gp;
228 struct se_device *lu_gp_mem_dev;
229 struct list_head lu_gp_mem_list;
230 } ____cacheline_aligned;
232 struct t10_alua_tg_pt_gp {
234 int tg_pt_gp_valid_id;
235 int tg_pt_gp_alua_access_status;
236 int tg_pt_gp_alua_access_type;
237 int tg_pt_gp_nonop_delay_msecs;
238 int tg_pt_gp_trans_delay_msecs;
240 int tg_pt_gp_write_metadata;
241 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
242 #define ALUA_MD_BUF_LEN 1024
243 u32 tg_pt_gp_md_buf_len;
244 u32 tg_pt_gp_members;
245 atomic_t tg_pt_gp_alua_access_state;
246 atomic_t tg_pt_gp_ref_cnt;
247 spinlock_t tg_pt_gp_lock;
248 struct mutex tg_pt_gp_md_mutex;
249 struct se_subsystem_dev *tg_pt_gp_su_dev;
250 struct config_group tg_pt_gp_group;
251 struct list_head tg_pt_gp_list;
252 struct list_head tg_pt_gp_mem_list;
253 } ____cacheline_aligned;
255 struct t10_alua_tg_pt_gp_member {
257 atomic_t tg_pt_gp_mem_ref_cnt;
258 spinlock_t tg_pt_gp_mem_lock;
259 struct t10_alua_tg_pt_gp *tg_pt_gp;
260 struct se_port *tg_pt;
261 struct list_head tg_pt_gp_mem_list;
262 } ____cacheline_aligned;
265 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
266 int protocol_identifier_set;
267 u32 protocol_identifier;
268 u32 device_identifier_code_set;
270 u32 device_identifier_type;
271 struct list_head vpd_list;
272 } ____cacheline_aligned;
278 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
279 spinlock_t t10_vpd_lock;
280 struct se_subsystem_dev *t10_sub_dev;
281 struct config_group t10_wwn_group;
282 struct list_head t10_vpd_list;
283 } ____cacheline_aligned;
287 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
288 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
294 SPC3_PERSISTENT_RESERVATIONS
295 } t10_reservations_index_t;
297 struct t10_pr_registration {
298 /* Used for fabrics that contain WWN+ISID */
299 #define PR_REG_ISID_LEN 16
300 /* PR_REG_ISID_LEN + ',i,0x' */
301 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
302 char pr_reg_isid[PR_REG_ISID_LEN];
303 /* Used during APTPL metadata reading */
304 #define PR_APTPL_MAX_IPORT_LEN 256
305 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
306 /* Used during APTPL metadata reading */
307 #define PR_APTPL_MAX_TPORT_LEN 256
308 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
309 /* For writing out live meta data */
310 unsigned char *pr_aptpl_buf;
313 /* Reservation effects all target ports */
314 int pr_reg_all_tg_pt;
315 /* Activate Persistence across Target Power Loss */
320 /* Used for fabric initiator WWPNs using a ISID */
321 bool isid_present_at_reg;
322 u32 pr_res_mapped_lun;
323 u32 pr_aptpl_target_lun;
324 u32 pr_res_generation;
327 atomic_t pr_res_holders;
328 struct se_node_acl *pr_reg_nacl;
329 struct se_dev_entry *pr_reg_deve;
330 struct se_lun *pr_reg_tg_pt_lun;
331 struct list_head pr_reg_list;
332 struct list_head pr_reg_abort_list;
333 struct list_head pr_reg_aptpl_list;
334 struct list_head pr_reg_atp_list;
335 struct list_head pr_reg_atp_mem_list;
336 } ____cacheline_aligned;
339 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
340 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
341 * core_setup_reservations()
343 struct t10_reservation_ops {
344 int (*t10_reservation_check)(struct se_cmd *, u32 *);
345 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
346 int (*t10_pr_register)(struct se_cmd *);
347 int (*t10_pr_clear)(struct se_cmd *);
350 struct t10_reservation {
351 /* Reservation effects all target ports */
353 /* Activate Persistence across Target Power Loss enabled
356 /* Used by struct t10_reservation->pr_aptpl_buf_len */
357 #define PR_APTPL_BUF_LEN 8192
358 u32 pr_aptpl_buf_len;
360 t10_reservations_index_t res_type;
361 spinlock_t registration_lock;
362 spinlock_t aptpl_reg_lock;
364 * This will always be set by one individual I_T Nexus.
365 * However with all_tg_pt=1, other I_T Nexus from the
366 * same initiator can access PR reg/res info on a different
369 * There is also the 'All Registrants' case, where there is
370 * a single *pr_res_holder of the reservation, but all
371 * registrations are considered reservation holders.
373 struct se_node_acl *pr_res_holder;
374 struct list_head registration_list;
375 struct list_head aptpl_reg_list;
376 struct t10_reservation_ops pr_ops;
377 } ____cacheline_aligned;
379 struct se_queue_req {
382 struct list_head qr_list;
383 } ____cacheline_aligned;
385 struct se_queue_obj {
387 spinlock_t cmd_queue_lock;
388 struct list_head qobj_list;
389 wait_queue_head_t thread_wq;
390 } ____cacheline_aligned;
393 unsigned long long task_lba;
396 struct se_cmd *task_se_cmd;
397 struct scatterlist *task_sg;
402 int task_error_status;
403 enum dma_data_direction task_data_direction;
404 atomic_t task_state_active;
405 struct list_head t_list;
406 struct list_head t_execute_list;
407 struct list_head t_state_list;
408 struct completion task_stop_comp;
409 } ____cacheline_aligned;
412 /* SAM response code being sent to initiator */
416 u8 scsi_sense_reason;
417 u16 scsi_sense_length;
418 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
419 int alua_nonop_delay;
420 /* See include/linux/dma-mapping.h */
421 enum dma_data_direction data_direction;
422 /* For SAM Task Attribute */
424 /* Transport protocol dependent state, see transport_state_table */
425 enum transport_state_table t_state;
426 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
427 unsigned check_release:1;
428 unsigned cmd_wait_set:1;
429 /* See se_cmd_flags_table */
432 /* Total size in bytes associated with command */
434 /* SCSI Presented Data Transfer Length */
438 /* Persistent Reservation key */
440 /* Used for sense data */
442 struct list_head se_delayed_node;
443 struct list_head se_lun_node;
444 struct list_head se_qf_node;
445 struct se_device *se_dev;
446 struct se_dev_entry *se_deve;
447 struct se_lun *se_lun;
448 /* Only used for internal passthrough and legacy TCM fabric modules */
449 struct se_session *se_sess;
450 struct se_tmr_req *se_tmr_req;
451 struct list_head se_queue_node;
452 struct list_head se_cmd_list;
453 struct completion cmd_wait_comp;
454 struct target_core_fabric_ops *se_tfo;
455 int (*execute_task)(struct se_task *);
456 void (*transport_complete_callback)(struct se_cmd *);
458 unsigned char *t_task_cdb;
459 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
460 unsigned long long t_task_lba;
463 u32 t_tasks_sg_chained_no;
466 atomic_t t_task_cdbs_left;
467 atomic_t t_task_cdbs_ex_left;
468 atomic_t t_task_cdbs_sent;
469 atomic_t t_transport_aborted;
470 atomic_t t_transport_active;
471 atomic_t t_transport_complete;
472 atomic_t t_transport_queue_active;
473 atomic_t t_transport_sent;
474 atomic_t t_transport_stop;
475 atomic_t transport_dev_active;
476 atomic_t transport_lun_active;
477 atomic_t transport_lun_fe_stop;
478 atomic_t transport_lun_stop;
479 spinlock_t t_state_lock;
480 struct completion t_transport_stop_comp;
481 struct completion transport_lun_fe_stop_comp;
482 struct completion transport_lun_stop_comp;
483 struct scatterlist *t_tasks_sg_chained;
485 struct work_struct work;
488 * Used for pre-registered fabric SGL passthrough WRITE and READ
489 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
490 * and other HW target mode fabric modules.
492 struct scatterlist *t_task_pt_sgl;
493 u32 t_task_pt_sgl_num;
495 struct scatterlist *t_data_sg;
496 unsigned int t_data_nents;
497 struct scatterlist *t_bidi_data_sg;
498 unsigned int t_bidi_data_nents;
500 /* Used for BIDI READ */
501 struct list_head t_task_list;
504 } ____cacheline_aligned;
507 /* Task Management function to be preformed */
509 /* Task Management response to send */
512 /* Reference to ITT that Task Mgmt should be preformed */
514 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
516 void *fabric_tmr_ptr;
517 struct se_cmd *task_cmd;
518 struct se_cmd *ref_cmd;
519 struct se_device *tmr_dev;
520 struct se_lun *tmr_lun;
521 struct list_head tmr_list;
522 } ____cacheline_aligned;
527 struct se_node_acl *ua_nacl;
528 struct list_head ua_dev_list;
529 struct list_head ua_nacl_list;
530 } ____cacheline_aligned;
533 char initiatorname[TRANSPORT_IQN_LEN];
534 /* Used to signal demo mode created ACL, disabled by default */
535 bool dynamic_node_acl;
541 spinlock_t stats_lock;
542 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
543 atomic_t acl_pr_ref_count;
544 struct se_dev_entry *device_list;
545 struct se_session *nacl_sess;
546 struct se_portal_group *se_tpg;
547 spinlock_t device_list_lock;
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 config_group *acl_default_groups[5];
555 struct list_head acl_list;
556 struct list_head acl_sess_list;
557 } ____cacheline_aligned;
560 unsigned sess_tearing_down:1;
562 struct se_node_acl *se_node_acl;
563 struct se_portal_group *se_tpg;
564 void *fabric_sess_ptr;
565 struct list_head sess_list;
566 struct list_head sess_acl_list;
567 struct list_head sess_cmd_list;
568 struct list_head sess_wait_list;
569 spinlock_t sess_cmd_lock;
570 } ____cacheline_aligned;
573 struct se_transform_info;
576 struct se_ml_stat_grps {
577 struct config_group stat_group;
578 struct config_group scsi_auth_intr_group;
579 struct config_group scsi_att_intr_port_group;
583 char initiatorname[TRANSPORT_IQN_LEN];
585 struct se_node_acl *se_lun_nacl;
586 struct se_lun *se_lun;
587 struct list_head lacl_list;
588 struct config_group se_lun_group;
589 struct se_ml_stat_grps ml_stat_grps;
590 } ____cacheline_aligned;
592 struct se_dev_entry {
593 bool def_pr_registered;
594 /* See transport_lunflags_table */
608 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
609 atomic_t pr_ref_count;
610 struct se_lun_acl *se_lun_acl;
612 struct se_lun *se_lun;
613 struct list_head alua_port_list;
614 struct list_head ua_list;
615 } ____cacheline_aligned;
617 struct se_dev_limits {
618 /* Max supported HW queue depth */
620 /* Max supported virtual queue depth */
622 /* From include/linux/blkdev.h for the other HW/SW limits. */
623 struct queue_limits limits;
624 } ____cacheline_aligned;
626 struct se_dev_attrib {
628 int emulate_fua_write;
629 int emulate_fua_read;
630 int emulate_write_cache;
631 int emulate_ua_intlck_ctrl;
635 int emulate_reservations;
637 int enforce_pr_isids;
639 int emulate_rest_reord;
647 u32 max_unmap_lba_count;
648 u32 max_unmap_block_desc_count;
649 u32 unmap_granularity;
650 u32 unmap_granularity_alignment;
651 struct se_subsystem_dev *da_sub_dev;
652 struct config_group da_group;
653 } ____cacheline_aligned;
655 struct se_dev_stat_grps {
656 struct config_group stat_group;
657 struct config_group scsi_dev_group;
658 struct config_group scsi_tgt_dev_group;
659 struct config_group scsi_lu_group;
662 struct se_subsystem_dev {
663 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
664 #define SE_DEV_ALIAS_LEN 512
665 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
666 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
667 #define SE_UDEV_PATH_LEN 512
668 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
670 struct se_hba *se_dev_hba;
671 struct se_device *se_dev_ptr;
672 struct se_dev_attrib se_dev_attrib;
673 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
674 struct t10_alua t10_alua;
675 /* T10 Inquiry and VPD WWN Information */
676 struct t10_wwn t10_wwn;
677 /* T10 SPC-2 + SPC-3 Reservations */
678 struct t10_reservation t10_pr;
679 spinlock_t se_dev_lock;
681 struct list_head se_dev_node;
682 struct config_group se_dev_group;
683 /* For T10 Reservations */
684 struct config_group se_dev_pr_group;
685 /* For target_core_stat.c groups */
686 struct se_dev_stat_grps dev_stat_grps;
687 } ____cacheline_aligned;
690 /* Set to 1 if thread is NOT sleeping on thread_sem */
692 u8 dev_status_timer_flags;
693 /* RELATIVE TARGET PORT IDENTIFER Counter */
694 u16 dev_rpti_counter;
695 /* Used for SAM Task Attribute ordering */
696 u32 dev_cur_ordered_id;
699 /* See transport_device_status_table */
701 u32 dev_tcq_window_closed;
702 /* Physical device queue depth */
704 /* Used for SPC-2 reservations enforce of ISIDs */
705 u64 dev_res_bin_isid;
706 t10_task_attr_index_t dev_task_attr_type;
707 /* Pointer to transport specific device structure */
715 spinlock_t stats_lock;
716 /* Active commands on this virtual SE device */
717 atomic_t active_cmds;
718 atomic_t simple_cmds;
720 atomic_t dev_ordered_id;
721 atomic_t dev_tur_active;
722 atomic_t execute_tasks;
723 atomic_t dev_status_thr_count;
724 atomic_t dev_hoq_count;
725 atomic_t dev_ordered_sync;
726 atomic_t dev_qf_count;
727 struct se_obj dev_obj;
728 struct se_obj dev_access_obj;
729 struct se_obj dev_export_obj;
730 struct se_queue_obj dev_queue_obj;
731 spinlock_t delayed_cmd_lock;
732 spinlock_t execute_task_lock;
733 spinlock_t state_task_lock;
734 spinlock_t dev_alua_lock;
735 spinlock_t dev_reservation_lock;
736 spinlock_t dev_state_lock;
737 spinlock_t dev_status_lock;
738 spinlock_t dev_status_thr_lock;
739 spinlock_t se_port_lock;
740 spinlock_t se_tmr_lock;
741 spinlock_t qf_cmd_lock;
742 /* Used for legacy SPC-2 reservationsa */
743 struct se_node_acl *dev_reserved_node_acl;
744 /* Used for ALUA Logical Unit Group membership */
745 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
746 /* Used for SPC-3 Persistent Reservations */
747 struct t10_pr_registration *dev_pr_res_holder;
748 struct list_head dev_sep_list;
749 struct list_head dev_tmr_list;
750 struct timer_list dev_status_timer;
751 /* Pointer to descriptor for processing thread */
752 struct task_struct *process_thread;
753 pid_t process_thread_pid;
754 struct task_struct *dev_mgmt_thread;
755 struct work_struct qf_work_queue;
756 struct list_head delayed_cmd_list;
757 struct list_head execute_task_list;
758 struct list_head state_task_list;
759 struct list_head qf_cmd_list;
760 /* Pointer to associated SE HBA */
761 struct se_hba *se_hba;
762 struct se_subsystem_dev *se_sub_dev;
763 /* Pointer to template of function pointers for transport */
764 struct se_subsystem_api *transport;
765 /* Linked list for struct se_hba struct se_device list */
766 struct list_head dev_list;
767 /* Linked list for struct se_global->g_se_dev_list */
768 struct list_head g_se_dev_list;
769 } ____cacheline_aligned;
774 /* See hba_flags_table */
776 /* Virtual iSCSI devices attached. */
779 /* Pointer to transport specific host structure. */
781 /* Linked list for struct se_device */
782 struct list_head hba_dev_list;
783 struct list_head hba_node;
784 spinlock_t device_lock;
785 struct config_group hba_group;
786 struct mutex hba_access_mutex;
787 struct se_subsystem_api *transport;
788 } ____cacheline_aligned;
790 struct se_port_stat_grps {
791 struct config_group stat_group;
792 struct config_group scsi_port_group;
793 struct config_group scsi_tgt_port_group;
794 struct config_group scsi_transport_group;
798 /* See transport_lun_status_table */
799 enum transport_lun_status_table lun_status;
803 atomic_t lun_acl_count;
804 spinlock_t lun_acl_lock;
805 spinlock_t lun_cmd_lock;
806 spinlock_t lun_sep_lock;
807 struct completion lun_shutdown_comp;
808 struct list_head lun_cmd_list;
809 struct list_head lun_acl_list;
810 struct se_device *lun_se_dev;
811 struct se_port *lun_sep;
812 struct config_group lun_group;
813 struct se_port_stat_grps port_stat_grps;
814 } ____cacheline_aligned;
816 struct scsi_port_stats {
820 } ____cacheline_aligned;
823 /* RELATIVE TARGET PORT IDENTIFER */
825 int sep_tg_pt_secondary_stat;
826 int sep_tg_pt_secondary_write_md;
828 struct scsi_port_stats sep_stats;
829 /* Used for ALUA Target Port Groups membership */
830 atomic_t sep_tg_pt_gp_active;
831 atomic_t sep_tg_pt_secondary_offline;
832 /* Used for PR ALL_TG_PT=1 */
833 atomic_t sep_tg_pt_ref_cnt;
834 spinlock_t sep_alua_lock;
835 struct mutex sep_tg_pt_md_mutex;
836 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
837 struct se_lun *sep_lun;
838 struct se_portal_group *sep_tpg;
839 struct list_head sep_alua_list;
840 struct list_head sep_list;
841 } ____cacheline_aligned;
844 struct se_portal_group *tpg_np_parent;
845 struct config_group tpg_np_group;
846 } ____cacheline_aligned;
848 struct se_portal_group {
849 /* Type of target portal group, see transport_tpg_type_table */
850 enum transport_tpg_type_table se_tpg_type;
851 /* Number of ACLed Initiator Nodes for this TPG */
853 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
854 atomic_t tpg_pr_ref_count;
855 /* Spinlock for adding/removing ACLed Nodes */
856 spinlock_t acl_node_lock;
857 /* Spinlock for adding/removing sessions */
858 spinlock_t session_lock;
859 spinlock_t tpg_lun_lock;
860 /* Pointer to $FABRIC_MOD portal group */
861 void *se_tpg_fabric_ptr;
862 struct list_head se_tpg_node;
863 /* linked list for initiator ACL list */
864 struct list_head acl_node_list;
865 struct se_lun *tpg_lun_list;
866 struct se_lun tpg_virt_lun0;
867 /* List of TCM sessions associated wth this TPG */
868 struct list_head tpg_sess_list;
869 /* Pointer to $FABRIC_MOD dependent code */
870 struct target_core_fabric_ops *se_tpg_tfo;
871 struct se_wwn *se_tpg_wwn;
872 struct config_group tpg_group;
873 struct config_group *tpg_default_groups[6];
874 struct config_group tpg_lun_group;
875 struct config_group tpg_np_group;
876 struct config_group tpg_acl_group;
877 struct config_group tpg_attrib_group;
878 struct config_group tpg_param_group;
879 } ____cacheline_aligned;
882 struct target_fabric_configfs *wwn_tf;
883 struct config_group wwn_group;
884 struct config_group *wwn_default_groups[2];
885 struct config_group fabric_stat_group;
886 } ____cacheline_aligned;
888 #endif /* TARGET_CORE_BASE_H */