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 */
75 enum timer_flags_table {
80 /* Special transport agnostic struct se_cmd->t_states */
81 enum transport_state_table {
82 TRANSPORT_NO_STATE = 0,
83 TRANSPORT_NEW_CMD = 1,
84 TRANSPORT_DEFERRED_CMD = 2,
85 TRANSPORT_WRITE_PENDING = 3,
86 TRANSPORT_PROCESS_WRITE = 4,
87 TRANSPORT_PROCESSING = 5,
88 TRANSPORT_COMPLETE_OK = 6,
89 TRANSPORT_COMPLETE_FAILURE = 7,
90 TRANSPORT_COMPLETE_TIMEOUT = 8,
91 TRANSPORT_PROCESS_TMR = 9,
92 TRANSPORT_TMR_COMPLETE = 10,
93 TRANSPORT_ISTATE_PROCESSING = 11,
94 TRANSPORT_ISTATE_PROCESSED = 12,
96 TRANSPORT_REMOVE = 14,
98 TRANSPORT_NEW_CMD_MAP = 16,
99 TRANSPORT_FREE_CMD_INTR = 17,
100 TRANSPORT_COMPLETE_QF_WP = 18,
103 /* Used for struct se_cmd->se_cmd_flags */
104 enum se_cmd_flags_table {
105 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
106 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
107 SCF_EMULATED_TASK_SENSE = 0x00000004,
108 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
109 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
110 SCF_SCSI_NON_DATA_CDB = 0x00000040,
111 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
112 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
113 SCF_SE_CMD_FAILED = 0x00000400,
114 SCF_SE_LUN_CMD = 0x00000800,
115 SCF_SE_ALLOW_EOO = 0x00001000,
116 SCF_SENT_CHECK_CONDITION = 0x00004000,
117 SCF_OVERFLOW_BIT = 0x00008000,
118 SCF_UNDERFLOW_BIT = 0x00010000,
119 SCF_SENT_DELAYED_TAS = 0x00020000,
120 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
121 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
122 SCF_UNUSED = 0x00100000,
123 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
124 SCF_EMULATE_CDB_ASYNC = 0x01000000,
125 SCF_EMULATE_QUEUE_FULL = 0x02000000,
128 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
129 enum transport_lunflags_table {
130 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
131 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
132 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
133 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
136 /* struct se_device->dev_status */
137 enum transport_device_status_table {
138 TRANSPORT_DEVICE_ACTIVATED = 0x01,
139 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
140 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
141 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
142 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
143 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
147 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
148 * to signal which ASC/ASCQ sense payload should be built.
150 enum tcm_sense_reason_table {
151 TCM_NON_EXISTENT_LUN = 0x01,
152 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
153 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
154 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
155 TCM_SERVICE_CRC_ERROR = 0x05,
156 TCM_SNACK_REJECTED = 0x06,
157 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
158 TCM_INVALID_CDB_FIELD = 0x08,
159 TCM_INVALID_PARAMETER_LIST = 0x09,
160 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
161 TCM_UNKNOWN_MODE_PAGE = 0x0b,
162 TCM_WRITE_PROTECTED = 0x0c,
163 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
164 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
165 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
169 atomic_t obj_access_count;
170 } ____cacheline_aligned;
173 * Used by TCM Core internally to signal if ALUA emulation is enabled or
174 * disabled, or running in with TCM/pSCSI passthrough mode
177 SPC_ALUA_PASSTHROUGH,
183 * Used by TCM Core internally to signal if SAM Task Attribute emulation
184 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
187 SAM_TASK_ATTR_PASSTHROUGH,
188 SAM_TASK_ATTR_UNTAGGED,
189 SAM_TASK_ATTR_EMULATED
190 } t10_task_attr_index_t;
193 * Used for target SCSI statistics
198 SCSI_AUTH_INTR_INDEX,
205 t10_alua_index_t alua_type;
206 /* ALUA Target Port Group ID */
207 u16 alua_tg_pt_gps_counter;
208 u32 alua_tg_pt_gps_count;
209 spinlock_t tg_pt_gps_lock;
210 struct se_subsystem_dev *t10_sub_dev;
211 /* Used for default ALUA Target Port Group */
212 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
213 /* Used for default ALUA Target Port Group ConfigFS group */
214 struct config_group alua_tg_pt_gps_group;
215 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
216 struct list_head tg_pt_gps_list;
217 } ____cacheline_aligned;
219 struct t10_alua_lu_gp {
223 atomic_t lu_gp_shutdown;
224 atomic_t lu_gp_ref_cnt;
225 spinlock_t lu_gp_lock;
226 struct config_group lu_gp_group;
227 struct list_head lu_gp_node;
228 struct list_head lu_gp_mem_list;
229 } ____cacheline_aligned;
231 struct t10_alua_lu_gp_member {
233 atomic_t lu_gp_mem_ref_cnt;
234 spinlock_t lu_gp_mem_lock;
235 struct t10_alua_lu_gp *lu_gp;
236 struct se_device *lu_gp_mem_dev;
237 struct list_head lu_gp_mem_list;
238 } ____cacheline_aligned;
240 struct t10_alua_tg_pt_gp {
242 int tg_pt_gp_valid_id;
243 int tg_pt_gp_alua_access_status;
244 int tg_pt_gp_alua_access_type;
245 int tg_pt_gp_nonop_delay_msecs;
246 int tg_pt_gp_trans_delay_msecs;
248 int tg_pt_gp_write_metadata;
249 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
250 #define ALUA_MD_BUF_LEN 1024
251 u32 tg_pt_gp_md_buf_len;
252 u32 tg_pt_gp_members;
253 atomic_t tg_pt_gp_alua_access_state;
254 atomic_t tg_pt_gp_ref_cnt;
255 spinlock_t tg_pt_gp_lock;
256 struct mutex tg_pt_gp_md_mutex;
257 struct se_subsystem_dev *tg_pt_gp_su_dev;
258 struct config_group tg_pt_gp_group;
259 struct list_head tg_pt_gp_list;
260 struct list_head tg_pt_gp_mem_list;
261 } ____cacheline_aligned;
263 struct t10_alua_tg_pt_gp_member {
265 atomic_t tg_pt_gp_mem_ref_cnt;
266 spinlock_t tg_pt_gp_mem_lock;
267 struct t10_alua_tg_pt_gp *tg_pt_gp;
268 struct se_port *tg_pt;
269 struct list_head tg_pt_gp_mem_list;
270 } ____cacheline_aligned;
273 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
274 int protocol_identifier_set;
275 u32 protocol_identifier;
276 u32 device_identifier_code_set;
278 u32 device_identifier_type;
279 struct list_head vpd_list;
280 } ____cacheline_aligned;
286 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
287 spinlock_t t10_vpd_lock;
288 struct se_subsystem_dev *t10_sub_dev;
289 struct config_group t10_wwn_group;
290 struct list_head t10_vpd_list;
291 } ____cacheline_aligned;
295 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
296 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
302 SPC3_PERSISTENT_RESERVATIONS
303 } t10_reservations_index_t;
305 struct t10_pr_registration {
306 /* Used for fabrics that contain WWN+ISID */
307 #define PR_REG_ISID_LEN 16
308 /* PR_REG_ISID_LEN + ',i,0x' */
309 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
310 char pr_reg_isid[PR_REG_ISID_LEN];
311 /* Used during APTPL metadata reading */
312 #define PR_APTPL_MAX_IPORT_LEN 256
313 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
314 /* Used during APTPL metadata reading */
315 #define PR_APTPL_MAX_TPORT_LEN 256
316 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
317 /* For writing out live meta data */
318 unsigned char *pr_aptpl_buf;
321 /* Reservation effects all target ports */
322 int pr_reg_all_tg_pt;
323 /* Activate Persistence across Target Power Loss */
328 /* Used for fabric initiator WWPNs using a ISID */
329 bool isid_present_at_reg;
330 u32 pr_res_mapped_lun;
331 u32 pr_aptpl_target_lun;
332 u32 pr_res_generation;
335 atomic_t pr_res_holders;
336 struct se_node_acl *pr_reg_nacl;
337 struct se_dev_entry *pr_reg_deve;
338 struct se_lun *pr_reg_tg_pt_lun;
339 struct list_head pr_reg_list;
340 struct list_head pr_reg_abort_list;
341 struct list_head pr_reg_aptpl_list;
342 struct list_head pr_reg_atp_list;
343 struct list_head pr_reg_atp_mem_list;
344 } ____cacheline_aligned;
347 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
348 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
349 * core_setup_reservations()
351 struct t10_reservation_ops {
352 int (*t10_reservation_check)(struct se_cmd *, u32 *);
353 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
354 int (*t10_pr_register)(struct se_cmd *);
355 int (*t10_pr_clear)(struct se_cmd *);
358 struct t10_reservation {
359 /* Reservation effects all target ports */
361 /* Activate Persistence across Target Power Loss enabled
364 /* Used by struct t10_reservation->pr_aptpl_buf_len */
365 #define PR_APTPL_BUF_LEN 8192
366 u32 pr_aptpl_buf_len;
368 t10_reservations_index_t res_type;
369 spinlock_t registration_lock;
370 spinlock_t aptpl_reg_lock;
372 * This will always be set by one individual I_T Nexus.
373 * However with all_tg_pt=1, other I_T Nexus from the
374 * same initiator can access PR reg/res info on a different
377 * There is also the 'All Registrants' case, where there is
378 * a single *pr_res_holder of the reservation, but all
379 * registrations are considered reservation holders.
381 struct se_node_acl *pr_res_holder;
382 struct list_head registration_list;
383 struct list_head aptpl_reg_list;
384 struct t10_reservation_ops pr_ops;
385 } ____cacheline_aligned;
387 struct se_queue_req {
390 struct list_head qr_list;
391 } ____cacheline_aligned;
393 struct se_queue_obj {
395 spinlock_t cmd_queue_lock;
396 struct list_head qobj_list;
397 wait_queue_head_t thread_wq;
398 } ____cacheline_aligned;
401 unsigned char task_sense;
402 struct scatterlist *task_sg;
404 struct scatterlist *task_sg_bidi;
407 int task_error_status;
409 unsigned long long task_lba;
413 enum dma_data_direction task_data_direction;
414 struct se_cmd *task_se_cmd;
415 struct completion task_stop_comp;
416 atomic_t task_active;
417 atomic_t task_execute_queue;
418 atomic_t task_timeout;
421 atomic_t task_state_active;
422 struct timer_list task_timer;
423 struct list_head t_list;
424 struct list_head t_execute_list;
425 struct list_head t_state_list;
426 } ____cacheline_aligned;
429 /* SAM response code being sent to initiator */
433 u8 scsi_sense_reason;
434 u16 scsi_sense_length;
435 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
436 int alua_nonop_delay;
437 /* See include/linux/dma-mapping.h */
438 enum dma_data_direction data_direction;
439 /* For SAM Task Attribute */
441 /* Transport protocol dependent state, see transport_state_table */
442 enum transport_state_table t_state;
443 /* Transport protocol dependent state for out of order CmdSNs */
444 int deferred_t_state;
445 /* Transport specific error status */
446 int transport_error_status;
447 /* See se_cmd_flags_table */
450 /* Total size in bytes associated with command */
452 /* SCSI Presented Data Transfer Length */
456 /* Persistent Reservation key */
458 atomic_t transport_sent;
459 /* Used for sense data */
461 struct list_head se_delayed_node;
462 struct list_head se_ordered_node;
463 struct list_head se_lun_node;
464 struct list_head se_qf_node;
465 struct se_device *se_dev;
466 struct se_dev_entry *se_deve;
467 struct se_device *se_obj_ptr;
468 struct se_device *se_orig_obj_ptr;
469 struct se_lun *se_lun;
470 /* Only used for internal passthrough and legacy TCM fabric modules */
471 struct se_session *se_sess;
472 struct se_tmr_req *se_tmr_req;
473 struct list_head se_queue_node;
474 struct target_core_fabric_ops *se_tfo;
475 int (*transport_emulate_cdb)(struct se_cmd *);
476 void (*transport_split_cdb)(unsigned long long, u32, unsigned char *);
477 void (*transport_complete_callback)(struct se_cmd *);
478 int (*transport_qf_callback)(struct se_cmd *);
480 unsigned char *t_task_cdb;
481 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
482 unsigned long long t_task_lba;
486 u32 t_tasks_sg_chained_no;
489 atomic_t t_task_cdbs_left;
490 atomic_t t_task_cdbs_ex_left;
491 atomic_t t_task_cdbs_timeout_left;
492 atomic_t t_task_cdbs_sent;
493 atomic_t t_transport_aborted;
494 atomic_t t_transport_active;
495 atomic_t t_transport_complete;
496 atomic_t t_transport_queue_active;
497 atomic_t t_transport_sent;
498 atomic_t t_transport_stop;
499 atomic_t t_transport_timeout;
500 atomic_t transport_dev_active;
501 atomic_t transport_lun_active;
502 atomic_t transport_lun_fe_stop;
503 atomic_t transport_lun_stop;
504 spinlock_t t_state_lock;
505 struct completion t_transport_stop_comp;
506 struct completion transport_lun_fe_stop_comp;
507 struct completion transport_lun_stop_comp;
508 struct scatterlist *t_tasks_sg_chained;
511 * Used for pre-registered fabric SGL passthrough WRITE and READ
512 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
513 * and other HW target mode fabric modules.
515 struct scatterlist *t_task_pt_sgl;
516 u32 t_task_pt_sgl_num;
518 struct scatterlist *t_data_sg;
519 unsigned int t_data_nents;
520 struct scatterlist *t_bidi_data_sg;
521 unsigned int t_bidi_data_nents;
523 /* Used for BIDI READ */
524 struct list_head t_task_list;
527 } ____cacheline_aligned;
530 /* Task Management function to be preformed */
532 /* Task Management response to send */
535 /* Reference to ITT that Task Mgmt should be preformed */
537 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
539 void *fabric_tmr_ptr;
540 struct se_cmd *task_cmd;
541 struct se_cmd *ref_cmd;
542 struct se_device *tmr_dev;
543 struct se_lun *tmr_lun;
544 struct list_head tmr_list;
545 } ____cacheline_aligned;
550 struct se_node_acl *ua_nacl;
551 struct list_head ua_dev_list;
552 struct list_head ua_nacl_list;
553 } ____cacheline_aligned;
556 char initiatorname[TRANSPORT_IQN_LEN];
557 /* Used to signal demo mode created ACL, disabled by default */
558 bool dynamic_node_acl;
564 spinlock_t stats_lock;
565 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
566 atomic_t acl_pr_ref_count;
567 struct se_dev_entry *device_list;
568 struct se_session *nacl_sess;
569 struct se_portal_group *se_tpg;
570 spinlock_t device_list_lock;
571 spinlock_t nacl_sess_lock;
572 struct config_group acl_group;
573 struct config_group acl_attrib_group;
574 struct config_group acl_auth_group;
575 struct config_group acl_param_group;
576 struct config_group acl_fabric_stat_group;
577 struct config_group *acl_default_groups[5];
578 struct list_head acl_list;
579 struct list_head acl_sess_list;
580 } ____cacheline_aligned;
584 struct se_node_acl *se_node_acl;
585 struct se_portal_group *se_tpg;
586 void *fabric_sess_ptr;
587 struct list_head sess_list;
588 struct list_head sess_acl_list;
589 } ____cacheline_aligned;
592 struct se_transform_info;
595 struct se_ml_stat_grps {
596 struct config_group stat_group;
597 struct config_group scsi_auth_intr_group;
598 struct config_group scsi_att_intr_port_group;
602 char initiatorname[TRANSPORT_IQN_LEN];
604 struct se_node_acl *se_lun_nacl;
605 struct se_lun *se_lun;
606 struct list_head lacl_list;
607 struct config_group se_lun_group;
608 struct se_ml_stat_grps ml_stat_grps;
609 } ____cacheline_aligned;
611 struct se_dev_entry {
612 bool def_pr_registered;
613 /* See transport_lunflags_table */
627 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
628 atomic_t pr_ref_count;
629 struct se_lun_acl *se_lun_acl;
631 struct se_lun *se_lun;
632 struct list_head alua_port_list;
633 struct list_head ua_list;
634 } ____cacheline_aligned;
636 struct se_dev_limits {
637 /* Max supported HW queue depth */
639 /* Max supported virtual queue depth */
641 /* From include/linux/blkdev.h for the other HW/SW limits. */
642 struct queue_limits limits;
643 } ____cacheline_aligned;
645 struct se_dev_attrib {
647 int emulate_fua_write;
648 int emulate_fua_read;
649 int emulate_write_cache;
650 int emulate_ua_intlck_ctrl;
654 int emulate_reservations;
656 int enforce_pr_isids;
658 int emulate_rest_reord;
667 u32 max_unmap_lba_count;
668 u32 max_unmap_block_desc_count;
669 u32 unmap_granularity;
670 u32 unmap_granularity_alignment;
671 struct se_subsystem_dev *da_sub_dev;
672 struct config_group da_group;
673 } ____cacheline_aligned;
675 struct se_dev_stat_grps {
676 struct config_group stat_group;
677 struct config_group scsi_dev_group;
678 struct config_group scsi_tgt_dev_group;
679 struct config_group scsi_lu_group;
682 struct se_subsystem_dev {
683 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
684 #define SE_DEV_ALIAS_LEN 512
685 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
686 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
687 #define SE_UDEV_PATH_LEN 512
688 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
690 struct se_hba *se_dev_hba;
691 struct se_device *se_dev_ptr;
692 struct se_dev_attrib se_dev_attrib;
693 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
694 struct t10_alua t10_alua;
695 /* T10 Inquiry and VPD WWN Information */
696 struct t10_wwn t10_wwn;
697 /* T10 SPC-2 + SPC-3 Reservations */
698 struct t10_reservation t10_pr;
699 spinlock_t se_dev_lock;
701 struct list_head se_dev_node;
702 struct config_group se_dev_group;
703 /* For T10 Reservations */
704 struct config_group se_dev_pr_group;
705 /* For target_core_stat.c groups */
706 struct se_dev_stat_grps dev_stat_grps;
707 } ____cacheline_aligned;
710 /* Set to 1 if thread is NOT sleeping on thread_sem */
712 u8 dev_status_timer_flags;
713 /* RELATIVE TARGET PORT IDENTIFER Counter */
714 u16 dev_rpti_counter;
715 /* Used for SAM Task Attribute ordering */
716 u32 dev_cur_ordered_id;
719 /* See transport_device_status_table */
721 u32 dev_tcq_window_closed;
722 /* Physical device queue depth */
724 /* Used for SPC-2 reservations enforce of ISIDs */
725 u64 dev_res_bin_isid;
726 t10_task_attr_index_t dev_task_attr_type;
727 /* Pointer to transport specific device structure */
735 spinlock_t stats_lock;
736 /* Active commands on this virtual SE device */
737 atomic_t active_cmds;
738 atomic_t simple_cmds;
740 atomic_t dev_ordered_id;
741 atomic_t dev_tur_active;
742 atomic_t execute_tasks;
743 atomic_t dev_status_thr_count;
744 atomic_t dev_hoq_count;
745 atomic_t dev_ordered_sync;
746 atomic_t dev_qf_count;
747 struct se_obj dev_obj;
748 struct se_obj dev_access_obj;
749 struct se_obj dev_export_obj;
750 struct se_queue_obj dev_queue_obj;
751 spinlock_t delayed_cmd_lock;
752 spinlock_t ordered_cmd_lock;
753 spinlock_t execute_task_lock;
754 spinlock_t state_task_lock;
755 spinlock_t dev_alua_lock;
756 spinlock_t dev_reservation_lock;
757 spinlock_t dev_state_lock;
758 spinlock_t dev_status_lock;
759 spinlock_t dev_status_thr_lock;
760 spinlock_t se_port_lock;
761 spinlock_t se_tmr_lock;
762 spinlock_t qf_cmd_lock;
763 /* Used for legacy SPC-2 reservationsa */
764 struct se_node_acl *dev_reserved_node_acl;
765 /* Used for ALUA Logical Unit Group membership */
766 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
767 /* Used for SPC-3 Persistent Reservations */
768 struct t10_pr_registration *dev_pr_res_holder;
769 struct list_head dev_sep_list;
770 struct list_head dev_tmr_list;
771 struct timer_list dev_status_timer;
772 /* Pointer to descriptor for processing thread */
773 struct task_struct *process_thread;
774 pid_t process_thread_pid;
775 struct task_struct *dev_mgmt_thread;
776 struct work_struct qf_work_queue;
777 struct list_head delayed_cmd_list;
778 struct list_head ordered_cmd_list;
779 struct list_head execute_task_list;
780 struct list_head state_task_list;
781 struct list_head qf_cmd_list;
782 /* Pointer to associated SE HBA */
783 struct se_hba *se_hba;
784 struct se_subsystem_dev *se_sub_dev;
785 /* Pointer to template of function pointers for transport */
786 struct se_subsystem_api *transport;
787 /* Linked list for struct se_hba struct se_device list */
788 struct list_head dev_list;
789 /* Linked list for struct se_global->g_se_dev_list */
790 struct list_head g_se_dev_list;
791 } ____cacheline_aligned;
796 /* See hba_flags_table */
798 /* Virtual iSCSI devices attached. */
801 /* Pointer to transport specific host structure. */
803 /* Linked list for struct se_device */
804 struct list_head hba_dev_list;
805 struct list_head hba_node;
806 spinlock_t device_lock;
807 struct config_group hba_group;
808 struct mutex hba_access_mutex;
809 struct se_subsystem_api *transport;
810 } ____cacheline_aligned;
812 struct se_port_stat_grps {
813 struct config_group stat_group;
814 struct config_group scsi_port_group;
815 struct config_group scsi_tgt_port_group;
816 struct config_group scsi_transport_group;
820 /* See transport_lun_status_table */
821 enum transport_lun_status_table lun_status;
825 atomic_t lun_acl_count;
826 spinlock_t lun_acl_lock;
827 spinlock_t lun_cmd_lock;
828 spinlock_t lun_sep_lock;
829 struct completion lun_shutdown_comp;
830 struct list_head lun_cmd_list;
831 struct list_head lun_acl_list;
832 struct se_device *lun_se_dev;
833 struct se_port *lun_sep;
834 struct config_group lun_group;
835 struct se_port_stat_grps port_stat_grps;
836 } ____cacheline_aligned;
838 struct scsi_port_stats {
842 } ____cacheline_aligned;
845 /* RELATIVE TARGET PORT IDENTIFER */
847 int sep_tg_pt_secondary_stat;
848 int sep_tg_pt_secondary_write_md;
850 struct scsi_port_stats sep_stats;
851 /* Used for ALUA Target Port Groups membership */
852 atomic_t sep_tg_pt_gp_active;
853 atomic_t sep_tg_pt_secondary_offline;
854 /* Used for PR ALL_TG_PT=1 */
855 atomic_t sep_tg_pt_ref_cnt;
856 spinlock_t sep_alua_lock;
857 struct mutex sep_tg_pt_md_mutex;
858 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
859 struct se_lun *sep_lun;
860 struct se_portal_group *sep_tpg;
861 struct list_head sep_alua_list;
862 struct list_head sep_list;
863 } ____cacheline_aligned;
866 struct se_portal_group *tpg_np_parent;
867 struct config_group tpg_np_group;
868 } ____cacheline_aligned;
870 struct se_portal_group {
871 /* Type of target portal group, see transport_tpg_type_table */
872 enum transport_tpg_type_table se_tpg_type;
873 /* Number of ACLed Initiator Nodes for this TPG */
875 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
876 atomic_t tpg_pr_ref_count;
877 /* Spinlock for adding/removing ACLed Nodes */
878 spinlock_t acl_node_lock;
879 /* Spinlock for adding/removing sessions */
880 spinlock_t session_lock;
881 spinlock_t tpg_lun_lock;
882 /* Pointer to $FABRIC_MOD portal group */
883 void *se_tpg_fabric_ptr;
884 struct list_head se_tpg_node;
885 /* linked list for initiator ACL list */
886 struct list_head acl_node_list;
887 struct se_lun *tpg_lun_list;
888 struct se_lun tpg_virt_lun0;
889 /* List of TCM sessions associated wth this TPG */
890 struct list_head tpg_sess_list;
891 /* Pointer to $FABRIC_MOD dependent code */
892 struct target_core_fabric_ops *se_tpg_tfo;
893 struct se_wwn *se_tpg_wwn;
894 struct config_group tpg_group;
895 struct config_group *tpg_default_groups[6];
896 struct config_group tpg_lun_group;
897 struct config_group tpg_np_group;
898 struct config_group tpg_acl_group;
899 struct config_group tpg_attrib_group;
900 struct config_group tpg_param_group;
901 } ____cacheline_aligned;
904 struct target_fabric_configfs *wwn_tf;
905 struct config_group wwn_group;
906 struct config_group *wwn_default_groups[2];
907 struct config_group fabric_stat_group;
908 } ____cacheline_aligned;
910 #endif /* TARGET_CORE_BASE_H */