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 "v4.0.0-rc7-ml"
13 #define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
15 /* Used by transport_generic_allocate_iovecs() */
16 #define TRANSPORT_IOV_DATA_BUFFER 5
17 /* Maximum Number of LUNs per Target Portal Group */
18 #define TRANSPORT_MAX_LUNS_PER_TPG 256
20 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
22 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
23 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
24 * 16-byte CDBs by default and require an extra allocation for
25 * 32-byte CDBs to because of legacy issues.
27 * Within TCM Core there are no such legacy limitiations, so we go ahead
28 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
29 * within all TCM Core and subsystem plugin code.
31 #define TCM_MAX_COMMAND_SIZE 32
33 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
34 * defined 96, but the real limit is 252 (or 260 including the header)
36 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
37 /* Used by transport_send_check_condition_and_sense() */
38 #define SPC_SENSE_KEY_OFFSET 2
39 #define SPC_ADD_SENSE_LEN_OFFSET 7
40 #define SPC_ASC_KEY_OFFSET 12
41 #define SPC_ASCQ_KEY_OFFSET 13
42 #define TRANSPORT_IQN_LEN 224
43 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
44 #define LU_GROUP_NAME_BUF 256
45 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
46 #define TG_PT_GROUP_NAME_BUF 256
47 /* Used to parse VPD into struct t10_vpd */
48 #define VPD_TMP_BUF_SIZE 128
49 /* Used by transport_generic_cmd_sequencer() */
50 #define READ_BLOCK_LEN 6
51 #define READ_CAP_LEN 8
52 #define READ_POSITION_LEN 20
53 #define INQUIRY_LEN 36
54 /* Used by transport_get_inquiry_vpd_serial() */
55 #define INQUIRY_VPD_SERIAL_LEN 254
56 /* Used by transport_get_inquiry_vpd_device_ident() */
57 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
59 /* struct se_hba->hba_flags */
60 enum hba_flags_table {
61 HBA_FLAGS_INTERNAL_USE = 0x01,
62 HBA_FLAGS_PSCSI_MODE = 0x02,
65 /* struct se_lun->lun_status */
66 enum transport_lun_status_table {
67 TRANSPORT_LUN_STATUS_FREE = 0,
68 TRANSPORT_LUN_STATUS_ACTIVE = 1,
71 /* struct se_portal_group->se_tpg_type */
72 enum transport_tpg_type_table {
73 TRANSPORT_TPG_TYPE_NORMAL = 0,
74 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
77 /* Used for generate timer flags */
78 enum timer_flags_table {
83 /* Special transport agnostic struct se_cmd->t_states */
84 enum transport_state_table {
85 TRANSPORT_NO_STATE = 0,
86 TRANSPORT_NEW_CMD = 1,
87 TRANSPORT_DEFERRED_CMD = 2,
88 TRANSPORT_WRITE_PENDING = 3,
89 TRANSPORT_PROCESS_WRITE = 4,
90 TRANSPORT_PROCESSING = 5,
91 TRANSPORT_COMPLETE_OK = 6,
92 TRANSPORT_COMPLETE_FAILURE = 7,
93 TRANSPORT_COMPLETE_TIMEOUT = 8,
94 TRANSPORT_PROCESS_TMR = 9,
95 TRANSPORT_TMR_COMPLETE = 10,
96 TRANSPORT_ISTATE_PROCESSING = 11,
97 TRANSPORT_ISTATE_PROCESSED = 12,
99 TRANSPORT_REMOVE = 14,
101 TRANSPORT_NEW_CMD_MAP = 16,
102 TRANSPORT_FREE_CMD_INTR = 17,
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_CONTROL_NONSG_IO_CDB = 0x00000020,
113 SCF_SCSI_NON_DATA_CDB = 0x00000040,
114 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
115 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
116 SCF_CMD_PASSTHROUGH_NOALLOC = 0x00000200,
117 SCF_SE_CMD_FAILED = 0x00000400,
118 SCF_SE_LUN_CMD = 0x00000800,
119 SCF_SE_ALLOW_EOO = 0x00001000,
120 SCF_SE_DISABLE_ONLINE_CHECK = 0x00002000,
121 SCF_SENT_CHECK_CONDITION = 0x00004000,
122 SCF_OVERFLOW_BIT = 0x00008000,
123 SCF_UNDERFLOW_BIT = 0x00010000,
124 SCF_SENT_DELAYED_TAS = 0x00020000,
125 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
126 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
127 SCF_PASSTHROUGH_SG_TO_MEM = 0x00100000,
128 SCF_PASSTHROUGH_CONTIG_TO_SG = 0x00200000,
129 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
130 SCF_EMULATE_SYNC_CACHE = 0x00800000,
131 SCF_EMULATE_CDB_ASYNC = 0x01000000,
132 SCF_EMULATE_SYNC_UNMAP = 0x02000000
135 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
136 enum transport_lunflags_table {
137 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
138 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
139 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
140 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
143 /* struct se_device->dev_status */
144 enum transport_device_status_table {
145 TRANSPORT_DEVICE_ACTIVATED = 0x01,
146 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
147 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
148 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
149 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
150 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
154 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
155 * to signal which ASC/ASCQ sense payload should be built.
157 enum tcm_sense_reason_table {
158 TCM_NON_EXISTENT_LUN = 0x01,
159 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
160 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
161 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
162 TCM_SERVICE_CRC_ERROR = 0x05,
163 TCM_SNACK_REJECTED = 0x06,
164 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
165 TCM_INVALID_CDB_FIELD = 0x08,
166 TCM_INVALID_PARAMETER_LIST = 0x09,
167 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
168 TCM_UNKNOWN_MODE_PAGE = 0x0b,
169 TCM_WRITE_PROTECTED = 0x0c,
170 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
171 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
172 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
176 atomic_t obj_access_count;
177 } ____cacheline_aligned;
180 * Used by TCM Core internally to signal if ALUA emulation is enabled or
181 * disabled, or running in with TCM/pSCSI passthrough mode
184 SPC_ALUA_PASSTHROUGH,
190 * Used by TCM Core internally to signal if SAM Task Attribute emulation
191 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
194 SAM_TASK_ATTR_PASSTHROUGH,
195 SAM_TASK_ATTR_UNTAGGED,
196 SAM_TASK_ATTR_EMULATED
197 } t10_task_attr_index_t;
200 * Used for target SCSI statistics
205 SCSI_AUTH_INTR_INDEX,
209 struct scsi_index_table {
211 u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX];
212 } ____cacheline_aligned;
217 t10_alua_index_t alua_type;
218 /* ALUA Target Port Group ID */
219 u16 alua_tg_pt_gps_counter;
220 u32 alua_tg_pt_gps_count;
221 spinlock_t tg_pt_gps_lock;
222 struct se_subsystem_dev *t10_sub_dev;
223 /* Used for default ALUA Target Port Group */
224 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
225 /* Used for default ALUA Target Port Group ConfigFS group */
226 struct config_group alua_tg_pt_gps_group;
227 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
228 struct list_head tg_pt_gps_list;
229 } ____cacheline_aligned;
231 struct t10_alua_lu_gp {
235 atomic_t lu_gp_shutdown;
236 atomic_t lu_gp_ref_cnt;
237 spinlock_t lu_gp_lock;
238 struct config_group lu_gp_group;
239 struct list_head lu_gp_list;
240 struct list_head lu_gp_mem_list;
241 } ____cacheline_aligned;
243 struct t10_alua_lu_gp_member {
245 atomic_t lu_gp_mem_ref_cnt;
246 spinlock_t lu_gp_mem_lock;
247 struct t10_alua_lu_gp *lu_gp;
248 struct se_device *lu_gp_mem_dev;
249 struct list_head lu_gp_mem_list;
250 } ____cacheline_aligned;
252 struct t10_alua_tg_pt_gp {
254 int tg_pt_gp_valid_id;
255 int tg_pt_gp_alua_access_status;
256 int tg_pt_gp_alua_access_type;
257 int tg_pt_gp_nonop_delay_msecs;
258 int tg_pt_gp_trans_delay_msecs;
260 int tg_pt_gp_write_metadata;
261 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
262 #define ALUA_MD_BUF_LEN 1024
263 u32 tg_pt_gp_md_buf_len;
264 u32 tg_pt_gp_members;
265 atomic_t tg_pt_gp_alua_access_state;
266 atomic_t tg_pt_gp_ref_cnt;
267 spinlock_t tg_pt_gp_lock;
268 struct mutex tg_pt_gp_md_mutex;
269 struct se_subsystem_dev *tg_pt_gp_su_dev;
270 struct config_group tg_pt_gp_group;
271 struct list_head tg_pt_gp_list;
272 struct list_head tg_pt_gp_mem_list;
273 } ____cacheline_aligned;
275 struct t10_alua_tg_pt_gp_member {
277 atomic_t tg_pt_gp_mem_ref_cnt;
278 spinlock_t tg_pt_gp_mem_lock;
279 struct t10_alua_tg_pt_gp *tg_pt_gp;
280 struct se_port *tg_pt;
281 struct list_head tg_pt_gp_mem_list;
282 } ____cacheline_aligned;
285 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
286 int protocol_identifier_set;
287 u32 protocol_identifier;
288 u32 device_identifier_code_set;
290 u32 device_identifier_type;
291 struct list_head vpd_list;
292 } ____cacheline_aligned;
295 unsigned char vendor[8];
296 unsigned char model[16];
297 unsigned char revision[4];
298 unsigned char unit_serial[INQUIRY_VPD_SERIAL_LEN];
299 spinlock_t t10_vpd_lock;
300 struct se_subsystem_dev *t10_sub_dev;
301 struct config_group t10_wwn_group;
302 struct list_head t10_vpd_list;
303 } ____cacheline_aligned;
307 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
308 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
314 SPC3_PERSISTENT_RESERVATIONS
315 } t10_reservations_index_t;
317 struct t10_pr_registration {
318 /* Used for fabrics that contain WWN+ISID */
319 #define PR_REG_ISID_LEN 16
320 /* PR_REG_ISID_LEN + ',i,0x' */
321 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
322 char pr_reg_isid[PR_REG_ISID_LEN];
323 /* Used during APTPL metadata reading */
324 #define PR_APTPL_MAX_IPORT_LEN 256
325 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
326 /* Used during APTPL metadata reading */
327 #define PR_APTPL_MAX_TPORT_LEN 256
328 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
329 /* For writing out live meta data */
330 unsigned char *pr_aptpl_buf;
333 /* Reservation effects all target ports */
334 int pr_reg_all_tg_pt;
335 /* Activate Persistence across Target Power Loss */
340 /* Used for fabric initiator WWPNs using a ISID */
341 bool isid_present_at_reg;
342 u32 pr_res_mapped_lun;
343 u32 pr_aptpl_target_lun;
344 u32 pr_res_generation;
347 atomic_t pr_res_holders;
348 struct se_node_acl *pr_reg_nacl;
349 struct se_dev_entry *pr_reg_deve;
350 struct se_lun *pr_reg_tg_pt_lun;
351 struct list_head pr_reg_list;
352 struct list_head pr_reg_abort_list;
353 struct list_head pr_reg_aptpl_list;
354 struct list_head pr_reg_atp_list;
355 struct list_head pr_reg_atp_mem_list;
356 } ____cacheline_aligned;
359 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
360 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
361 * core_setup_reservations()
363 struct t10_reservation_ops {
364 int (*t10_reservation_check)(struct se_cmd *, u32 *);
365 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
366 int (*t10_pr_register)(struct se_cmd *);
367 int (*t10_pr_clear)(struct se_cmd *);
370 struct t10_reservation_template {
371 /* Reservation effects all target ports */
373 /* Activate Persistence across Target Power Loss enabled
376 /* Used by struct t10_reservation_template->pr_aptpl_buf_len */
377 #define PR_APTPL_BUF_LEN 8192
378 u32 pr_aptpl_buf_len;
380 t10_reservations_index_t res_type;
381 spinlock_t registration_lock;
382 spinlock_t aptpl_reg_lock;
384 * This will always be set by one individual I_T Nexus.
385 * However with all_tg_pt=1, other I_T Nexus from the
386 * same initiator can access PR reg/res info on a different
389 * There is also the 'All Registrants' case, where there is
390 * a single *pr_res_holder of the reservation, but all
391 * registrations are considered reservation holders.
393 struct se_node_acl *pr_res_holder;
394 struct list_head registration_list;
395 struct list_head aptpl_reg_list;
396 struct t10_reservation_ops pr_ops;
397 } ____cacheline_aligned;
399 struct se_queue_req {
402 struct list_head qr_list;
403 } ____cacheline_aligned;
405 struct se_queue_obj {
407 spinlock_t cmd_queue_lock;
408 struct list_head qobj_list;
409 wait_queue_head_t thread_wq;
410 } ____cacheline_aligned;
413 * Used one per struct se_cmd to hold all extra struct se_task
414 * metadata. This structure is setup and allocated in
415 * drivers/target/target_core_transport.c:__transport_alloc_se_cmd()
417 struct se_transport_task {
418 unsigned char *t_task_cdb;
419 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
420 unsigned long long t_task_lba;
429 u32 t_tasks_se_bidi_num;
430 u32 t_tasks_sg_chained_no;
433 atomic_t t_task_cdbs_left;
434 atomic_t t_task_cdbs_ex_left;
435 atomic_t t_task_cdbs_timeout_left;
436 atomic_t t_task_cdbs_sent;
437 atomic_t t_transport_aborted;
438 atomic_t t_transport_active;
439 atomic_t t_transport_complete;
440 atomic_t t_transport_queue_active;
441 atomic_t t_transport_sent;
442 atomic_t t_transport_stop;
443 atomic_t t_transport_timeout;
444 atomic_t transport_dev_active;
445 atomic_t transport_lun_active;
446 atomic_t transport_lun_fe_stop;
447 atomic_t transport_lun_stop;
448 spinlock_t t_state_lock;
449 struct completion t_transport_stop_comp;
450 struct completion transport_lun_fe_stop_comp;
451 struct completion transport_lun_stop_comp;
452 struct scatterlist *t_tasks_sg_chained;
453 struct scatterlist t_tasks_sg_bounce;
456 * Used for pre-registered fabric SGL passthrough WRITE and READ
457 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
458 * and other HW target mode fabric modules.
460 struct scatterlist *t_task_pt_sgl;
461 struct list_head *t_mem_list;
462 /* Used for BIDI READ */
463 struct list_head *t_mem_bidi_list;
464 struct list_head t_task_list;
465 } ____cacheline_aligned;
468 unsigned char task_sense;
469 struct scatterlist *task_sg;
470 struct scatterlist *task_sg_bidi;
473 int task_error_status;
474 int task_state_flags;
476 unsigned long long task_lba;
482 enum dma_data_direction task_data_direction;
483 struct se_cmd *task_se_cmd;
484 struct se_device *se_dev;
485 struct completion task_stop_comp;
486 atomic_t task_active;
487 atomic_t task_execute_queue;
488 atomic_t task_timeout;
491 atomic_t task_state_active;
492 struct timer_list task_timer;
493 struct se_device *se_obj_ptr;
494 struct list_head t_list;
495 struct list_head t_execute_list;
496 struct list_head t_state_list;
497 } ____cacheline_aligned;
499 #define TASK_CMD(task) ((task)->task_se_cmd)
500 #define TASK_DEV(task) ((task)->se_dev)
503 /* SAM response code being sent to initiator */
507 u8 scsi_sense_reason;
508 u16 scsi_sense_length;
509 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
510 int alua_nonop_delay;
511 /* See include/linux/dma-mapping.h */
512 enum dma_data_direction data_direction;
513 /* For SAM Task Attribute */
515 /* Transport protocol dependent state, see transport_state_table */
516 enum transport_state_table t_state;
517 /* Transport protocol dependent state for out of order CmdSNs */
518 int deferred_t_state;
519 /* Transport specific error status */
520 int transport_error_status;
521 /* See se_cmd_flags_table */
524 /* Total size in bytes associated with command */
526 /* SCSI Presented Data Transfer Length */
530 /* Persistent Reservation key */
532 atomic_t transport_sent;
533 /* Used for sense data */
535 struct list_head se_delayed_list;
536 struct list_head se_ordered_list;
537 struct list_head se_lun_list;
538 struct se_device *se_dev;
539 struct se_dev_entry *se_deve;
540 struct se_device *se_obj_ptr;
541 struct se_device *se_orig_obj_ptr;
542 struct se_lun *se_lun;
543 /* Only used for internal passthrough and legacy TCM fabric modules */
544 struct se_session *se_sess;
545 struct se_tmr_req *se_tmr_req;
546 /* t_task is setup to t_task_backstore in transport_init_se_cmd() */
547 struct se_transport_task *t_task;
548 struct se_transport_task t_task_backstore;
549 struct target_core_fabric_ops *se_tfo;
550 int (*transport_emulate_cdb)(struct se_cmd *);
551 void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *);
552 void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
553 void (*transport_complete_callback)(struct se_cmd *);
554 } ____cacheline_aligned;
556 #define T_TASK(cmd) ((cmd)->t_task)
557 #define CMD_TFO(cmd) ((cmd)->se_tfo)
560 /* Task Management function to be preformed */
562 /* Task Management response to send */
565 /* Reference to ITT that Task Mgmt should be preformed */
567 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
569 void *fabric_tmr_ptr;
570 struct se_cmd *task_cmd;
571 struct se_cmd *ref_cmd;
572 struct se_device *tmr_dev;
573 struct se_lun *tmr_lun;
574 struct list_head tmr_list;
575 } ____cacheline_aligned;
580 struct se_node_acl *ua_nacl;
581 struct list_head ua_dev_list;
582 struct list_head ua_nacl_list;
583 } ____cacheline_aligned;
586 char initiatorname[TRANSPORT_IQN_LEN];
587 /* Used to signal demo mode created ACL, disabled by default */
588 bool dynamic_node_acl;
594 spinlock_t stats_lock;
595 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
596 atomic_t acl_pr_ref_count;
597 struct se_dev_entry *device_list;
598 struct se_session *nacl_sess;
599 struct se_portal_group *se_tpg;
600 spinlock_t device_list_lock;
601 spinlock_t nacl_sess_lock;
602 struct config_group acl_group;
603 struct config_group acl_attrib_group;
604 struct config_group acl_auth_group;
605 struct config_group acl_param_group;
606 struct config_group acl_fabric_stat_group;
607 struct config_group *acl_default_groups[5];
608 struct list_head acl_list;
609 struct list_head acl_sess_list;
610 } ____cacheline_aligned;
614 struct se_node_acl *se_node_acl;
615 struct se_portal_group *se_tpg;
616 void *fabric_sess_ptr;
617 struct list_head sess_list;
618 struct list_head sess_acl_list;
619 } ____cacheline_aligned;
621 #define SE_SESS(cmd) ((cmd)->se_sess)
622 #define SE_NODE_ACL(sess) ((sess)->se_node_acl)
625 struct se_transform_info;
628 struct se_ml_stat_grps {
629 struct config_group stat_group;
630 struct config_group scsi_auth_intr_group;
631 struct config_group scsi_att_intr_port_group;
635 char initiatorname[TRANSPORT_IQN_LEN];
637 struct se_node_acl *se_lun_nacl;
638 struct se_lun *se_lun;
639 struct list_head lacl_list;
640 struct config_group se_lun_group;
641 struct se_ml_stat_grps ml_stat_grps;
642 } ____cacheline_aligned;
644 #define ML_STAT_GRPS(lacl) (&(lacl)->ml_stat_grps)
646 struct se_dev_entry {
647 bool def_pr_registered;
648 /* See transport_lunflags_table */
662 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
663 atomic_t pr_ref_count;
664 struct se_lun_acl *se_lun_acl;
666 struct se_lun *se_lun;
667 struct list_head alua_port_list;
668 struct list_head ua_list;
669 } ____cacheline_aligned;
671 struct se_dev_limits {
672 /* Max supported HW queue depth */
674 /* Max supported virtual queue depth */
676 /* From include/linux/blkdev.h for the other HW/SW limits. */
677 struct queue_limits limits;
678 } ____cacheline_aligned;
680 struct se_dev_attrib {
682 int emulate_fua_write;
683 int emulate_fua_read;
684 int emulate_write_cache;
685 int emulate_ua_intlck_ctrl;
689 int emulate_reservations;
691 int enforce_pr_isids;
700 u32 max_unmap_lba_count;
701 u32 max_unmap_block_desc_count;
702 u32 unmap_granularity;
703 u32 unmap_granularity_alignment;
704 struct se_subsystem_dev *da_sub_dev;
705 struct config_group da_group;
706 } ____cacheline_aligned;
708 struct se_dev_stat_grps {
709 struct config_group stat_group;
710 struct config_group scsi_dev_group;
711 struct config_group scsi_tgt_dev_group;
712 struct config_group scsi_lu_group;
715 struct se_subsystem_dev {
716 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
717 #define SE_DEV_ALIAS_LEN 512
718 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
719 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
720 #define SE_UDEV_PATH_LEN 512
721 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
723 struct se_hba *se_dev_hba;
724 struct se_device *se_dev_ptr;
725 struct se_dev_attrib se_dev_attrib;
726 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
727 struct t10_alua t10_alua;
728 /* T10 Inquiry and VPD WWN Information */
729 struct t10_wwn t10_wwn;
730 /* T10 SPC-2 + SPC-3 Reservations */
731 struct t10_reservation_template t10_reservation;
732 spinlock_t se_dev_lock;
734 struct list_head g_se_dev_list;
735 struct config_group se_dev_group;
736 /* For T10 Reservations */
737 struct config_group se_dev_pr_group;
738 /* For target_core_stat.c groups */
739 struct se_dev_stat_grps dev_stat_grps;
740 } ____cacheline_aligned;
742 #define T10_ALUA(su_dev) (&(su_dev)->t10_alua)
743 #define T10_RES(su_dev) (&(su_dev)->t10_reservation)
744 #define T10_PR_OPS(su_dev) (&(su_dev)->t10_reservation.pr_ops)
745 #define DEV_STAT_GRP(dev) (&(dev)->dev_stat_grps)
748 /* Set to 1 if thread is NOT sleeping on thread_sem */
750 u8 dev_status_timer_flags;
751 /* RELATIVE TARGET PORT IDENTIFER Counter */
752 u16 dev_rpti_counter;
753 /* Used for SAM Task Attribute ordering */
754 u32 dev_cur_ordered_id;
757 /* See transport_device_status_table */
759 u32 dev_tcq_window_closed;
760 /* Physical device queue depth */
762 /* Used for SPC-2 reservations enforce of ISIDs */
763 u64 dev_res_bin_isid;
764 t10_task_attr_index_t dev_task_attr_type;
765 /* Pointer to transport specific device structure */
773 spinlock_t stats_lock;
774 /* Active commands on this virtual SE device */
775 atomic_t active_cmds;
776 atomic_t simple_cmds;
778 atomic_t dev_ordered_id;
779 atomic_t dev_tur_active;
780 atomic_t execute_tasks;
781 atomic_t dev_status_thr_count;
782 atomic_t dev_hoq_count;
783 atomic_t dev_ordered_sync;
784 struct se_obj dev_obj;
785 struct se_obj dev_access_obj;
786 struct se_obj dev_export_obj;
787 struct se_queue_obj *dev_queue_obj;
788 struct se_queue_obj *dev_status_queue_obj;
789 spinlock_t delayed_cmd_lock;
790 spinlock_t ordered_cmd_lock;
791 spinlock_t execute_task_lock;
792 spinlock_t state_task_lock;
793 spinlock_t dev_alua_lock;
794 spinlock_t dev_reservation_lock;
795 spinlock_t dev_state_lock;
796 spinlock_t dev_status_lock;
797 spinlock_t dev_status_thr_lock;
798 spinlock_t se_port_lock;
799 spinlock_t se_tmr_lock;
800 /* Used for legacy SPC-2 reservationsa */
801 struct se_node_acl *dev_reserved_node_acl;
802 /* Used for ALUA Logical Unit Group membership */
803 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
804 /* Used for SPC-3 Persistent Reservations */
805 struct t10_pr_registration *dev_pr_res_holder;
806 struct list_head dev_sep_list;
807 struct list_head dev_tmr_list;
808 struct timer_list dev_status_timer;
809 /* Pointer to descriptor for processing thread */
810 struct task_struct *process_thread;
811 pid_t process_thread_pid;
812 struct task_struct *dev_mgmt_thread;
813 struct list_head delayed_cmd_list;
814 struct list_head ordered_cmd_list;
815 struct list_head execute_task_list;
816 struct list_head state_task_list;
817 /* Pointer to associated SE HBA */
818 struct se_hba *se_hba;
819 struct se_subsystem_dev *se_sub_dev;
820 /* Pointer to template of function pointers for transport */
821 struct se_subsystem_api *transport;
822 /* Linked list for struct se_hba struct se_device list */
823 struct list_head dev_list;
824 /* Linked list for struct se_global->g_se_dev_list */
825 struct list_head g_se_dev_list;
826 } ____cacheline_aligned;
828 #define SE_DEV(cmd) ((cmd)->se_lun->lun_se_dev)
829 #define SU_DEV(dev) ((dev)->se_sub_dev)
830 #define DEV_ATTRIB(dev) (&(dev)->se_sub_dev->se_dev_attrib)
831 #define DEV_T10_WWN(dev) (&(dev)->se_sub_dev->t10_wwn)
836 /* See hba_flags_table */
838 /* Virtual iSCSI devices attached. */
841 atomic_t load_balance_queue;
842 atomic_t left_queue_depth;
843 /* Maximum queue depth the HBA can handle. */
844 atomic_t max_queue_depth;
845 /* Pointer to transport specific host structure. */
847 /* Linked list for struct se_device */
848 struct list_head hba_dev_list;
849 struct list_head hba_list;
850 spinlock_t device_lock;
851 spinlock_t hba_queue_lock;
852 struct config_group hba_group;
853 struct mutex hba_access_mutex;
854 struct se_subsystem_api *transport;
855 } ____cacheline_aligned;
857 #define SE_HBA(dev) ((dev)->se_hba)
859 struct se_port_stat_grps {
860 struct config_group stat_group;
861 struct config_group scsi_port_group;
862 struct config_group scsi_tgt_port_group;
863 struct config_group scsi_transport_group;
867 /* See transport_lun_status_table */
868 enum transport_lun_status_table lun_status;
872 atomic_t lun_acl_count;
873 spinlock_t lun_acl_lock;
874 spinlock_t lun_cmd_lock;
875 spinlock_t lun_sep_lock;
876 struct completion lun_shutdown_comp;
877 struct list_head lun_cmd_list;
878 struct list_head lun_acl_list;
879 struct se_device *lun_se_dev;
880 struct se_port *lun_sep;
881 struct config_group lun_group;
882 struct se_port_stat_grps port_stat_grps;
883 } ____cacheline_aligned;
885 #define SE_LUN(cmd) ((cmd)->se_lun)
886 #define PORT_STAT_GRP(lun) (&(lun)->port_stat_grps)
888 struct scsi_port_stats {
892 } ____cacheline_aligned;
895 /* RELATIVE TARGET PORT IDENTIFER */
897 int sep_tg_pt_secondary_stat;
898 int sep_tg_pt_secondary_write_md;
900 struct scsi_port_stats sep_stats;
901 /* Used for ALUA Target Port Groups membership */
902 atomic_t sep_tg_pt_gp_active;
903 atomic_t sep_tg_pt_secondary_offline;
904 /* Used for PR ALL_TG_PT=1 */
905 atomic_t sep_tg_pt_ref_cnt;
906 spinlock_t sep_alua_lock;
907 struct mutex sep_tg_pt_md_mutex;
908 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
909 struct se_lun *sep_lun;
910 struct se_portal_group *sep_tpg;
911 struct list_head sep_alua_list;
912 struct list_head sep_list;
913 } ____cacheline_aligned;
916 struct se_portal_group *tpg_np_parent;
917 struct config_group tpg_np_group;
918 } ____cacheline_aligned;
920 struct se_portal_group {
921 /* Type of target portal group, see transport_tpg_type_table */
922 enum transport_tpg_type_table se_tpg_type;
923 /* Number of ACLed Initiator Nodes for this TPG */
925 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
926 atomic_t tpg_pr_ref_count;
927 /* Spinlock for adding/removing ACLed Nodes */
928 spinlock_t acl_node_lock;
929 /* Spinlock for adding/removing sessions */
930 spinlock_t session_lock;
931 spinlock_t tpg_lun_lock;
932 /* Pointer to $FABRIC_MOD portal group */
933 void *se_tpg_fabric_ptr;
934 struct list_head se_tpg_list;
935 /* linked list for initiator ACL list */
936 struct list_head acl_node_list;
937 struct se_lun *tpg_lun_list;
938 struct se_lun tpg_virt_lun0;
939 /* List of TCM sessions associated wth this TPG */
940 struct list_head tpg_sess_list;
941 /* Pointer to $FABRIC_MOD dependent code */
942 struct target_core_fabric_ops *se_tpg_tfo;
943 struct se_wwn *se_tpg_wwn;
944 struct config_group tpg_group;
945 struct config_group *tpg_default_groups[6];
946 struct config_group tpg_lun_group;
947 struct config_group tpg_np_group;
948 struct config_group tpg_acl_group;
949 struct config_group tpg_attrib_group;
950 struct config_group tpg_param_group;
951 } ____cacheline_aligned;
953 #define TPG_TFO(se_tpg) ((se_tpg)->se_tpg_tfo)
956 struct target_fabric_configfs *wwn_tf;
957 struct config_group wwn_group;
958 struct config_group *wwn_default_groups[2];
959 struct config_group fabric_stat_group;
960 } ____cacheline_aligned;
963 u16 alua_lu_gps_counter;
964 int g_sub_api_initialized;
966 u32 alua_lu_gps_count;
967 u32 g_hba_id_counter;
968 struct config_group target_core_hbagroup;
969 struct config_group alua_group;
970 struct config_group alua_lu_gps_group;
971 struct list_head g_lu_gps_list;
972 struct list_head g_se_tpg_list;
973 struct list_head g_hba_list;
974 struct list_head g_se_dev_list;
975 struct se_hba *g_lun0_hba;
976 struct se_subsystem_dev *g_lun0_su_dev;
977 struct se_device *g_lun0_dev;
978 struct t10_alua_lu_gp *default_lu_gp;
979 spinlock_t g_device_lock;
981 spinlock_t se_tpg_lock;
982 spinlock_t lu_gps_lock;
983 spinlock_t plugin_class_lock;
984 } ____cacheline_aligned;
986 #endif /* TARGET_CORE_BASE_H */