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_WRITE_PENDING = 3,
87 TRANSPORT_PROCESS_WRITE = 4,
88 TRANSPORT_PROCESSING = 5,
89 TRANSPORT_COMPLETE = 6,
90 TRANSPORT_PROCESS_TMR = 9,
91 TRANSPORT_ISTATE_PROCESSING = 11,
92 TRANSPORT_NEW_CMD_MAP = 16,
93 TRANSPORT_FREE_CMD_INTR = 17,
94 TRANSPORT_COMPLETE_QF_WP = 18,
95 TRANSPORT_COMPLETE_QF_OK = 19,
98 /* Used for struct se_cmd->se_cmd_flags */
99 enum se_cmd_flags_table {
100 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
101 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
102 SCF_EMULATED_TASK_SENSE = 0x00000004,
103 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
104 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
105 SCF_SCSI_NON_DATA_CDB = 0x00000040,
106 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
107 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
108 SCF_SE_CMD_FAILED = 0x00000400,
109 SCF_SE_LUN_CMD = 0x00000800,
110 SCF_SE_ALLOW_EOO = 0x00001000,
111 SCF_SENT_CHECK_CONDITION = 0x00004000,
112 SCF_OVERFLOW_BIT = 0x00008000,
113 SCF_UNDERFLOW_BIT = 0x00010000,
114 SCF_SENT_DELAYED_TAS = 0x00020000,
115 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
116 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
117 SCF_UNUSED = 0x00100000,
118 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
119 SCF_EMULATE_CDB_ASYNC = 0x01000000,
122 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
123 enum transport_lunflags_table {
124 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
125 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
126 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
127 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
130 /* struct se_device->dev_status */
131 enum transport_device_status_table {
132 TRANSPORT_DEVICE_ACTIVATED = 0x01,
133 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
134 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
135 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
136 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
137 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
141 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
142 * to signal which ASC/ASCQ sense payload should be built.
144 enum tcm_sense_reason_table {
145 TCM_NON_EXISTENT_LUN = 0x01,
146 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
147 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
148 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
149 TCM_SERVICE_CRC_ERROR = 0x05,
150 TCM_SNACK_REJECTED = 0x06,
151 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
152 TCM_INVALID_CDB_FIELD = 0x08,
153 TCM_INVALID_PARAMETER_LIST = 0x09,
154 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
155 TCM_UNKNOWN_MODE_PAGE = 0x0b,
156 TCM_WRITE_PROTECTED = 0x0c,
157 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
158 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
159 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
163 atomic_t obj_access_count;
164 } ____cacheline_aligned;
167 * Used by TCM Core internally to signal if ALUA emulation is enabled or
168 * disabled, or running in with TCM/pSCSI passthrough mode
171 SPC_ALUA_PASSTHROUGH,
177 * Used by TCM Core internally to signal if SAM Task Attribute emulation
178 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
181 SAM_TASK_ATTR_PASSTHROUGH,
182 SAM_TASK_ATTR_UNTAGGED,
183 SAM_TASK_ATTR_EMULATED
184 } t10_task_attr_index_t;
187 * Used for target SCSI statistics
192 SCSI_AUTH_INTR_INDEX,
199 t10_alua_index_t alua_type;
200 /* ALUA Target Port Group ID */
201 u16 alua_tg_pt_gps_counter;
202 u32 alua_tg_pt_gps_count;
203 spinlock_t tg_pt_gps_lock;
204 struct se_subsystem_dev *t10_sub_dev;
205 /* Used for default ALUA Target Port Group */
206 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
207 /* Used for default ALUA Target Port Group ConfigFS group */
208 struct config_group alua_tg_pt_gps_group;
209 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
210 struct list_head tg_pt_gps_list;
211 } ____cacheline_aligned;
213 struct t10_alua_lu_gp {
217 atomic_t lu_gp_shutdown;
218 atomic_t lu_gp_ref_cnt;
219 spinlock_t lu_gp_lock;
220 struct config_group lu_gp_group;
221 struct list_head lu_gp_node;
222 struct list_head lu_gp_mem_list;
223 } ____cacheline_aligned;
225 struct t10_alua_lu_gp_member {
227 atomic_t lu_gp_mem_ref_cnt;
228 spinlock_t lu_gp_mem_lock;
229 struct t10_alua_lu_gp *lu_gp;
230 struct se_device *lu_gp_mem_dev;
231 struct list_head lu_gp_mem_list;
232 } ____cacheline_aligned;
234 struct t10_alua_tg_pt_gp {
236 int tg_pt_gp_valid_id;
237 int tg_pt_gp_alua_access_status;
238 int tg_pt_gp_alua_access_type;
239 int tg_pt_gp_nonop_delay_msecs;
240 int tg_pt_gp_trans_delay_msecs;
242 int tg_pt_gp_write_metadata;
243 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
244 #define ALUA_MD_BUF_LEN 1024
245 u32 tg_pt_gp_md_buf_len;
246 u32 tg_pt_gp_members;
247 atomic_t tg_pt_gp_alua_access_state;
248 atomic_t tg_pt_gp_ref_cnt;
249 spinlock_t tg_pt_gp_lock;
250 struct mutex tg_pt_gp_md_mutex;
251 struct se_subsystem_dev *tg_pt_gp_su_dev;
252 struct config_group tg_pt_gp_group;
253 struct list_head tg_pt_gp_list;
254 struct list_head tg_pt_gp_mem_list;
255 } ____cacheline_aligned;
257 struct t10_alua_tg_pt_gp_member {
259 atomic_t tg_pt_gp_mem_ref_cnt;
260 spinlock_t tg_pt_gp_mem_lock;
261 struct t10_alua_tg_pt_gp *tg_pt_gp;
262 struct se_port *tg_pt;
263 struct list_head tg_pt_gp_mem_list;
264 } ____cacheline_aligned;
267 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
268 int protocol_identifier_set;
269 u32 protocol_identifier;
270 u32 device_identifier_code_set;
272 u32 device_identifier_type;
273 struct list_head vpd_list;
274 } ____cacheline_aligned;
280 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
281 spinlock_t t10_vpd_lock;
282 struct se_subsystem_dev *t10_sub_dev;
283 struct config_group t10_wwn_group;
284 struct list_head t10_vpd_list;
285 } ____cacheline_aligned;
289 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
290 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
296 SPC3_PERSISTENT_RESERVATIONS
297 } t10_reservations_index_t;
299 struct t10_pr_registration {
300 /* Used for fabrics that contain WWN+ISID */
301 #define PR_REG_ISID_LEN 16
302 /* PR_REG_ISID_LEN + ',i,0x' */
303 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
304 char pr_reg_isid[PR_REG_ISID_LEN];
305 /* Used during APTPL metadata reading */
306 #define PR_APTPL_MAX_IPORT_LEN 256
307 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
308 /* Used during APTPL metadata reading */
309 #define PR_APTPL_MAX_TPORT_LEN 256
310 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
311 /* For writing out live meta data */
312 unsigned char *pr_aptpl_buf;
315 /* Reservation effects all target ports */
316 int pr_reg_all_tg_pt;
317 /* Activate Persistence across Target Power Loss */
322 /* Used for fabric initiator WWPNs using a ISID */
323 bool isid_present_at_reg;
324 u32 pr_res_mapped_lun;
325 u32 pr_aptpl_target_lun;
326 u32 pr_res_generation;
329 atomic_t pr_res_holders;
330 struct se_node_acl *pr_reg_nacl;
331 struct se_dev_entry *pr_reg_deve;
332 struct se_lun *pr_reg_tg_pt_lun;
333 struct list_head pr_reg_list;
334 struct list_head pr_reg_abort_list;
335 struct list_head pr_reg_aptpl_list;
336 struct list_head pr_reg_atp_list;
337 struct list_head pr_reg_atp_mem_list;
338 } ____cacheline_aligned;
341 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
342 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
343 * core_setup_reservations()
345 struct t10_reservation_ops {
346 int (*t10_reservation_check)(struct se_cmd *, u32 *);
347 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
348 int (*t10_pr_register)(struct se_cmd *);
349 int (*t10_pr_clear)(struct se_cmd *);
352 struct t10_reservation {
353 /* Reservation effects all target ports */
355 /* Activate Persistence across Target Power Loss enabled
358 /* Used by struct t10_reservation->pr_aptpl_buf_len */
359 #define PR_APTPL_BUF_LEN 8192
360 u32 pr_aptpl_buf_len;
362 t10_reservations_index_t res_type;
363 spinlock_t registration_lock;
364 spinlock_t aptpl_reg_lock;
366 * This will always be set by one individual I_T Nexus.
367 * However with all_tg_pt=1, other I_T Nexus from the
368 * same initiator can access PR reg/res info on a different
371 * There is also the 'All Registrants' case, where there is
372 * a single *pr_res_holder of the reservation, but all
373 * registrations are considered reservation holders.
375 struct se_node_acl *pr_res_holder;
376 struct list_head registration_list;
377 struct list_head aptpl_reg_list;
378 struct t10_reservation_ops pr_ops;
379 } ____cacheline_aligned;
381 struct se_queue_req {
384 struct list_head qr_list;
385 } ____cacheline_aligned;
387 struct se_queue_obj {
389 spinlock_t cmd_queue_lock;
390 struct list_head qobj_list;
391 wait_queue_head_t thread_wq;
392 } ____cacheline_aligned;
395 unsigned long long task_lba;
398 struct se_cmd *task_se_cmd;
399 struct scatterlist *task_sg;
404 int task_error_status;
405 enum dma_data_direction task_data_direction;
406 atomic_t task_state_active;
407 struct timer_list task_timer;
408 struct list_head t_list;
409 struct list_head t_execute_list;
410 struct list_head t_state_list;
411 struct completion task_stop_comp;
412 } ____cacheline_aligned;
415 /* SAM response code being sent to initiator */
419 u8 scsi_sense_reason;
420 u16 scsi_sense_length;
421 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
422 int alua_nonop_delay;
423 /* See include/linux/dma-mapping.h */
424 enum dma_data_direction data_direction;
425 /* For SAM Task Attribute */
427 /* Transport protocol dependent state, see transport_state_table */
428 enum transport_state_table t_state;
429 /* Transport specific error status */
430 int transport_error_status;
431 /* See se_cmd_flags_table */
434 /* Total size in bytes associated with command */
436 /* SCSI Presented Data Transfer Length */
440 /* Persistent Reservation key */
442 atomic_t transport_sent;
443 /* Used for sense data */
445 struct list_head se_delayed_node;
446 struct list_head se_ordered_node;
447 struct list_head se_lun_node;
448 struct list_head se_qf_node;
449 struct se_device *se_dev;
450 struct se_dev_entry *se_deve;
451 struct se_device *se_obj_ptr;
452 struct se_device *se_orig_obj_ptr;
453 struct se_lun *se_lun;
454 /* Only used for internal passthrough and legacy TCM fabric modules */
455 struct se_session *se_sess;
456 struct se_tmr_req *se_tmr_req;
457 struct list_head se_queue_node;
458 struct target_core_fabric_ops *se_tfo;
459 int (*transport_emulate_cdb)(struct se_cmd *);
460 void (*transport_complete_callback)(struct se_cmd *);
462 unsigned char *t_task_cdb;
463 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
464 unsigned long long t_task_lba;
468 u32 t_tasks_sg_chained_no;
471 atomic_t t_task_cdbs_left;
472 atomic_t t_task_cdbs_ex_left;
473 atomic_t t_task_cdbs_timeout_left;
474 atomic_t t_task_cdbs_sent;
475 atomic_t t_transport_aborted;
476 atomic_t t_transport_active;
477 atomic_t t_transport_complete;
478 atomic_t t_transport_queue_active;
479 atomic_t t_transport_sent;
480 atomic_t t_transport_stop;
481 atomic_t t_transport_timeout;
482 atomic_t transport_dev_active;
483 atomic_t transport_lun_active;
484 atomic_t transport_lun_fe_stop;
485 atomic_t transport_lun_stop;
486 spinlock_t t_state_lock;
487 struct completion t_transport_stop_comp;
488 struct completion transport_lun_fe_stop_comp;
489 struct completion transport_lun_stop_comp;
490 struct scatterlist *t_tasks_sg_chained;
492 struct work_struct work;
495 * Used for pre-registered fabric SGL passthrough WRITE and READ
496 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
497 * and other HW target mode fabric modules.
499 struct scatterlist *t_task_pt_sgl;
500 u32 t_task_pt_sgl_num;
502 struct scatterlist *t_data_sg;
503 unsigned int t_data_nents;
504 struct scatterlist *t_bidi_data_sg;
505 unsigned int t_bidi_data_nents;
507 /* Used for BIDI READ */
508 struct list_head t_task_list;
511 } ____cacheline_aligned;
514 /* Task Management function to be preformed */
516 /* Task Management response to send */
519 /* Reference to ITT that Task Mgmt should be preformed */
521 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
523 void *fabric_tmr_ptr;
524 struct se_cmd *task_cmd;
525 struct se_cmd *ref_cmd;
526 struct se_device *tmr_dev;
527 struct se_lun *tmr_lun;
528 struct list_head tmr_list;
529 } ____cacheline_aligned;
534 struct se_node_acl *ua_nacl;
535 struct list_head ua_dev_list;
536 struct list_head ua_nacl_list;
537 } ____cacheline_aligned;
540 char initiatorname[TRANSPORT_IQN_LEN];
541 /* Used to signal demo mode created ACL, disabled by default */
542 bool dynamic_node_acl;
548 spinlock_t stats_lock;
549 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
550 atomic_t acl_pr_ref_count;
551 struct se_dev_entry *device_list;
552 struct se_session *nacl_sess;
553 struct se_portal_group *se_tpg;
554 spinlock_t device_list_lock;
555 spinlock_t nacl_sess_lock;
556 struct config_group acl_group;
557 struct config_group acl_attrib_group;
558 struct config_group acl_auth_group;
559 struct config_group acl_param_group;
560 struct config_group acl_fabric_stat_group;
561 struct config_group *acl_default_groups[5];
562 struct list_head acl_list;
563 struct list_head acl_sess_list;
564 } ____cacheline_aligned;
568 struct se_node_acl *se_node_acl;
569 struct se_portal_group *se_tpg;
570 void *fabric_sess_ptr;
571 struct list_head sess_list;
572 struct list_head sess_acl_list;
573 } ____cacheline_aligned;
576 struct se_transform_info;
579 struct se_ml_stat_grps {
580 struct config_group stat_group;
581 struct config_group scsi_auth_intr_group;
582 struct config_group scsi_att_intr_port_group;
586 char initiatorname[TRANSPORT_IQN_LEN];
588 struct se_node_acl *se_lun_nacl;
589 struct se_lun *se_lun;
590 struct list_head lacl_list;
591 struct config_group se_lun_group;
592 struct se_ml_stat_grps ml_stat_grps;
593 } ____cacheline_aligned;
595 struct se_dev_entry {
596 bool def_pr_registered;
597 /* See transport_lunflags_table */
611 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
612 atomic_t pr_ref_count;
613 struct se_lun_acl *se_lun_acl;
615 struct se_lun *se_lun;
616 struct list_head alua_port_list;
617 struct list_head ua_list;
618 } ____cacheline_aligned;
620 struct se_dev_limits {
621 /* Max supported HW queue depth */
623 /* Max supported virtual queue depth */
625 /* From include/linux/blkdev.h for the other HW/SW limits. */
626 struct queue_limits limits;
627 } ____cacheline_aligned;
629 struct se_dev_attrib {
631 int emulate_fua_write;
632 int emulate_fua_read;
633 int emulate_write_cache;
634 int emulate_ua_intlck_ctrl;
638 int emulate_reservations;
640 int enforce_pr_isids;
642 int emulate_rest_reord;
651 u32 max_unmap_lba_count;
652 u32 max_unmap_block_desc_count;
653 u32 unmap_granularity;
654 u32 unmap_granularity_alignment;
655 struct se_subsystem_dev *da_sub_dev;
656 struct config_group da_group;
657 } ____cacheline_aligned;
659 struct se_dev_stat_grps {
660 struct config_group stat_group;
661 struct config_group scsi_dev_group;
662 struct config_group scsi_tgt_dev_group;
663 struct config_group scsi_lu_group;
666 struct se_subsystem_dev {
667 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
668 #define SE_DEV_ALIAS_LEN 512
669 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
670 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
671 #define SE_UDEV_PATH_LEN 512
672 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
674 struct se_hba *se_dev_hba;
675 struct se_device *se_dev_ptr;
676 struct se_dev_attrib se_dev_attrib;
677 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
678 struct t10_alua t10_alua;
679 /* T10 Inquiry and VPD WWN Information */
680 struct t10_wwn t10_wwn;
681 /* T10 SPC-2 + SPC-3 Reservations */
682 struct t10_reservation t10_pr;
683 spinlock_t se_dev_lock;
685 struct list_head se_dev_node;
686 struct config_group se_dev_group;
687 /* For T10 Reservations */
688 struct config_group se_dev_pr_group;
689 /* For target_core_stat.c groups */
690 struct se_dev_stat_grps dev_stat_grps;
691 } ____cacheline_aligned;
694 /* Set to 1 if thread is NOT sleeping on thread_sem */
696 u8 dev_status_timer_flags;
697 /* RELATIVE TARGET PORT IDENTIFER Counter */
698 u16 dev_rpti_counter;
699 /* Used for SAM Task Attribute ordering */
700 u32 dev_cur_ordered_id;
703 /* See transport_device_status_table */
705 u32 dev_tcq_window_closed;
706 /* Physical device queue depth */
708 /* Used for SPC-2 reservations enforce of ISIDs */
709 u64 dev_res_bin_isid;
710 t10_task_attr_index_t dev_task_attr_type;
711 /* Pointer to transport specific device structure */
719 spinlock_t stats_lock;
720 /* Active commands on this virtual SE device */
721 atomic_t active_cmds;
722 atomic_t simple_cmds;
724 atomic_t dev_ordered_id;
725 atomic_t dev_tur_active;
726 atomic_t execute_tasks;
727 atomic_t dev_status_thr_count;
728 atomic_t dev_hoq_count;
729 atomic_t dev_ordered_sync;
730 atomic_t dev_qf_count;
731 struct se_obj dev_obj;
732 struct se_obj dev_access_obj;
733 struct se_obj dev_export_obj;
734 struct se_queue_obj dev_queue_obj;
735 spinlock_t delayed_cmd_lock;
736 spinlock_t ordered_cmd_lock;
737 spinlock_t execute_task_lock;
738 spinlock_t state_task_lock;
739 spinlock_t dev_alua_lock;
740 spinlock_t dev_reservation_lock;
741 spinlock_t dev_state_lock;
742 spinlock_t dev_status_lock;
743 spinlock_t dev_status_thr_lock;
744 spinlock_t se_port_lock;
745 spinlock_t se_tmr_lock;
746 spinlock_t qf_cmd_lock;
747 /* Used for legacy SPC-2 reservationsa */
748 struct se_node_acl *dev_reserved_node_acl;
749 /* Used for ALUA Logical Unit Group membership */
750 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
751 /* Used for SPC-3 Persistent Reservations */
752 struct t10_pr_registration *dev_pr_res_holder;
753 struct list_head dev_sep_list;
754 struct list_head dev_tmr_list;
755 struct timer_list dev_status_timer;
756 /* Pointer to descriptor for processing thread */
757 struct task_struct *process_thread;
758 pid_t process_thread_pid;
759 struct task_struct *dev_mgmt_thread;
760 struct work_struct qf_work_queue;
761 struct list_head delayed_cmd_list;
762 struct list_head ordered_cmd_list;
763 struct list_head execute_task_list;
764 struct list_head state_task_list;
765 struct list_head qf_cmd_list;
766 /* Pointer to associated SE HBA */
767 struct se_hba *se_hba;
768 struct se_subsystem_dev *se_sub_dev;
769 /* Pointer to template of function pointers for transport */
770 struct se_subsystem_api *transport;
771 /* Linked list for struct se_hba struct se_device list */
772 struct list_head dev_list;
773 /* Linked list for struct se_global->g_se_dev_list */
774 struct list_head g_se_dev_list;
775 } ____cacheline_aligned;
780 /* See hba_flags_table */
782 /* Virtual iSCSI devices attached. */
785 /* Pointer to transport specific host structure. */
787 /* Linked list for struct se_device */
788 struct list_head hba_dev_list;
789 struct list_head hba_node;
790 spinlock_t device_lock;
791 struct config_group hba_group;
792 struct mutex hba_access_mutex;
793 struct se_subsystem_api *transport;
794 } ____cacheline_aligned;
796 struct se_port_stat_grps {
797 struct config_group stat_group;
798 struct config_group scsi_port_group;
799 struct config_group scsi_tgt_port_group;
800 struct config_group scsi_transport_group;
804 /* See transport_lun_status_table */
805 enum transport_lun_status_table lun_status;
809 atomic_t lun_acl_count;
810 spinlock_t lun_acl_lock;
811 spinlock_t lun_cmd_lock;
812 spinlock_t lun_sep_lock;
813 struct completion lun_shutdown_comp;
814 struct list_head lun_cmd_list;
815 struct list_head lun_acl_list;
816 struct se_device *lun_se_dev;
817 struct se_port *lun_sep;
818 struct config_group lun_group;
819 struct se_port_stat_grps port_stat_grps;
820 } ____cacheline_aligned;
822 struct scsi_port_stats {
826 } ____cacheline_aligned;
829 /* RELATIVE TARGET PORT IDENTIFER */
831 int sep_tg_pt_secondary_stat;
832 int sep_tg_pt_secondary_write_md;
834 struct scsi_port_stats sep_stats;
835 /* Used for ALUA Target Port Groups membership */
836 atomic_t sep_tg_pt_gp_active;
837 atomic_t sep_tg_pt_secondary_offline;
838 /* Used for PR ALL_TG_PT=1 */
839 atomic_t sep_tg_pt_ref_cnt;
840 spinlock_t sep_alua_lock;
841 struct mutex sep_tg_pt_md_mutex;
842 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
843 struct se_lun *sep_lun;
844 struct se_portal_group *sep_tpg;
845 struct list_head sep_alua_list;
846 struct list_head sep_list;
847 } ____cacheline_aligned;
850 struct se_portal_group *tpg_np_parent;
851 struct config_group tpg_np_group;
852 } ____cacheline_aligned;
854 struct se_portal_group {
855 /* Type of target portal group, see transport_tpg_type_table */
856 enum transport_tpg_type_table se_tpg_type;
857 /* Number of ACLed Initiator Nodes for this TPG */
859 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
860 atomic_t tpg_pr_ref_count;
861 /* Spinlock for adding/removing ACLed Nodes */
862 spinlock_t acl_node_lock;
863 /* Spinlock for adding/removing sessions */
864 spinlock_t session_lock;
865 spinlock_t tpg_lun_lock;
866 /* Pointer to $FABRIC_MOD portal group */
867 void *se_tpg_fabric_ptr;
868 struct list_head se_tpg_node;
869 /* linked list for initiator ACL list */
870 struct list_head acl_node_list;
871 struct se_lun *tpg_lun_list;
872 struct se_lun tpg_virt_lun0;
873 /* List of TCM sessions associated wth this TPG */
874 struct list_head tpg_sess_list;
875 /* Pointer to $FABRIC_MOD dependent code */
876 struct target_core_fabric_ops *se_tpg_tfo;
877 struct se_wwn *se_tpg_wwn;
878 struct config_group tpg_group;
879 struct config_group *tpg_default_groups[6];
880 struct config_group tpg_lun_group;
881 struct config_group tpg_np_group;
882 struct config_group tpg_acl_group;
883 struct config_group tpg_attrib_group;
884 struct config_group tpg_param_group;
885 } ____cacheline_aligned;
888 struct target_fabric_configfs *wwn_tf;
889 struct config_group wwn_group;
890 struct config_group *wwn_default_groups[2];
891 struct config_group fabric_stat_group;
892 } ____cacheline_aligned;
894 #endif /* TARGET_CORE_BASE_H */