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_ASC_KEY_OFFSET 12
40 #define SPC_ASCQ_KEY_OFFSET 13
41 #define TRANSPORT_IQN_LEN 224
42 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
43 #define LU_GROUP_NAME_BUF 256
44 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
45 #define TG_PT_GROUP_NAME_BUF 256
46 /* Used to parse VPD into struct t10_vpd */
47 #define VPD_TMP_BUF_SIZE 128
48 /* Used by transport_generic_cmd_sequencer() */
49 #define READ_BLOCK_LEN 6
50 #define READ_CAP_LEN 8
51 #define READ_POSITION_LEN 20
52 #define INQUIRY_LEN 36
53 /* Used by transport_get_inquiry_vpd_serial() */
54 #define INQUIRY_VPD_SERIAL_LEN 254
55 /* Used by transport_get_inquiry_vpd_device_ident() */
56 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
58 /* struct se_hba->hba_flags */
59 enum hba_flags_table {
60 HBA_FLAGS_INTERNAL_USE = 0x01,
61 HBA_FLAGS_PSCSI_MODE = 0x02,
64 /* struct se_lun->lun_status */
65 enum transport_lun_status_table {
66 TRANSPORT_LUN_STATUS_FREE = 0,
67 TRANSPORT_LUN_STATUS_ACTIVE = 1,
70 /* struct se_portal_group->se_tpg_type */
71 enum transport_tpg_type_table {
72 TRANSPORT_TPG_TYPE_NORMAL = 0,
73 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
76 /* Used for generate timer flags */
77 enum timer_flags_table {
82 /* Special transport agnostic struct se_cmd->t_states */
83 enum transport_state_table {
84 TRANSPORT_NO_STATE = 0,
85 TRANSPORT_NEW_CMD = 1,
86 TRANSPORT_DEFERRED_CMD = 2,
87 TRANSPORT_WRITE_PENDING = 3,
88 TRANSPORT_PROCESS_WRITE = 4,
89 TRANSPORT_PROCESSING = 5,
90 TRANSPORT_COMPLETE_OK = 6,
91 TRANSPORT_COMPLETE_FAILURE = 7,
92 TRANSPORT_COMPLETE_TIMEOUT = 8,
93 TRANSPORT_PROCESS_TMR = 9,
94 TRANSPORT_TMR_COMPLETE = 10,
95 TRANSPORT_ISTATE_PROCESSING = 11,
96 TRANSPORT_ISTATE_PROCESSED = 12,
98 TRANSPORT_REMOVE = 14,
100 TRANSPORT_NEW_CMD_MAP = 16,
101 TRANSPORT_FREE_CMD_INTR = 17,
102 TRANSPORT_COMPLETE_QF_WP = 18,
105 /* Used for struct se_cmd->se_cmd_flags */
106 enum se_cmd_flags_table {
107 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
108 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
109 SCF_EMULATED_TASK_SENSE = 0x00000004,
110 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
111 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
112 SCF_SCSI_NON_DATA_CDB = 0x00000040,
113 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
114 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
115 SCF_SE_CMD_FAILED = 0x00000400,
116 SCF_SE_LUN_CMD = 0x00000800,
117 SCF_SE_ALLOW_EOO = 0x00001000,
118 SCF_SENT_CHECK_CONDITION = 0x00004000,
119 SCF_OVERFLOW_BIT = 0x00008000,
120 SCF_UNDERFLOW_BIT = 0x00010000,
121 SCF_SENT_DELAYED_TAS = 0x00020000,
122 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
123 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
124 SCF_UNUSED = 0x00100000,
125 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
126 SCF_EMULATE_CDB_ASYNC = 0x01000000,
127 SCF_EMULATE_QUEUE_FULL = 0x02000000,
130 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
131 enum transport_lunflags_table {
132 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
133 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
134 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
135 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
138 /* struct se_device->dev_status */
139 enum transport_device_status_table {
140 TRANSPORT_DEVICE_ACTIVATED = 0x01,
141 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
142 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
143 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
144 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
145 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
149 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
150 * to signal which ASC/ASCQ sense payload should be built.
152 enum tcm_sense_reason_table {
153 TCM_NON_EXISTENT_LUN = 0x01,
154 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
155 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
156 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
157 TCM_SERVICE_CRC_ERROR = 0x05,
158 TCM_SNACK_REJECTED = 0x06,
159 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
160 TCM_INVALID_CDB_FIELD = 0x08,
161 TCM_INVALID_PARAMETER_LIST = 0x09,
162 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
163 TCM_UNKNOWN_MODE_PAGE = 0x0b,
164 TCM_WRITE_PROTECTED = 0x0c,
165 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
166 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
167 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
171 atomic_t obj_access_count;
172 } ____cacheline_aligned;
175 * Used by TCM Core internally to signal if ALUA emulation is enabled or
176 * disabled, or running in with TCM/pSCSI passthrough mode
179 SPC_ALUA_PASSTHROUGH,
185 * Used by TCM Core internally to signal if SAM Task Attribute emulation
186 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
189 SAM_TASK_ATTR_PASSTHROUGH,
190 SAM_TASK_ATTR_UNTAGGED,
191 SAM_TASK_ATTR_EMULATED
192 } t10_task_attr_index_t;
195 * Used for target SCSI statistics
200 SCSI_AUTH_INTR_INDEX,
207 t10_alua_index_t alua_type;
208 /* ALUA Target Port Group ID */
209 u16 alua_tg_pt_gps_counter;
210 u32 alua_tg_pt_gps_count;
211 spinlock_t tg_pt_gps_lock;
212 struct se_subsystem_dev *t10_sub_dev;
213 /* Used for default ALUA Target Port Group */
214 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
215 /* Used for default ALUA Target Port Group ConfigFS group */
216 struct config_group alua_tg_pt_gps_group;
217 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
218 struct list_head tg_pt_gps_list;
219 } ____cacheline_aligned;
221 struct t10_alua_lu_gp {
225 atomic_t lu_gp_shutdown;
226 atomic_t lu_gp_ref_cnt;
227 spinlock_t lu_gp_lock;
228 struct config_group lu_gp_group;
229 struct list_head lu_gp_node;
230 struct list_head lu_gp_mem_list;
231 } ____cacheline_aligned;
233 struct t10_alua_lu_gp_member {
235 atomic_t lu_gp_mem_ref_cnt;
236 spinlock_t lu_gp_mem_lock;
237 struct t10_alua_lu_gp *lu_gp;
238 struct se_device *lu_gp_mem_dev;
239 struct list_head lu_gp_mem_list;
240 } ____cacheline_aligned;
242 struct t10_alua_tg_pt_gp {
244 int tg_pt_gp_valid_id;
245 int tg_pt_gp_alua_access_status;
246 int tg_pt_gp_alua_access_type;
247 int tg_pt_gp_nonop_delay_msecs;
248 int tg_pt_gp_trans_delay_msecs;
250 int tg_pt_gp_write_metadata;
251 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
252 #define ALUA_MD_BUF_LEN 1024
253 u32 tg_pt_gp_md_buf_len;
254 u32 tg_pt_gp_members;
255 atomic_t tg_pt_gp_alua_access_state;
256 atomic_t tg_pt_gp_ref_cnt;
257 spinlock_t tg_pt_gp_lock;
258 struct mutex tg_pt_gp_md_mutex;
259 struct se_subsystem_dev *tg_pt_gp_su_dev;
260 struct config_group tg_pt_gp_group;
261 struct list_head tg_pt_gp_list;
262 struct list_head tg_pt_gp_mem_list;
263 } ____cacheline_aligned;
265 struct t10_alua_tg_pt_gp_member {
267 atomic_t tg_pt_gp_mem_ref_cnt;
268 spinlock_t tg_pt_gp_mem_lock;
269 struct t10_alua_tg_pt_gp *tg_pt_gp;
270 struct se_port *tg_pt;
271 struct list_head tg_pt_gp_mem_list;
272 } ____cacheline_aligned;
275 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
276 int protocol_identifier_set;
277 u32 protocol_identifier;
278 u32 device_identifier_code_set;
280 u32 device_identifier_type;
281 struct list_head vpd_list;
282 } ____cacheline_aligned;
288 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
289 spinlock_t t10_vpd_lock;
290 struct se_subsystem_dev *t10_sub_dev;
291 struct config_group t10_wwn_group;
292 struct list_head t10_vpd_list;
293 } ____cacheline_aligned;
297 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
298 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
304 SPC3_PERSISTENT_RESERVATIONS
305 } t10_reservations_index_t;
307 struct t10_pr_registration {
308 /* Used for fabrics that contain WWN+ISID */
309 #define PR_REG_ISID_LEN 16
310 /* PR_REG_ISID_LEN + ',i,0x' */
311 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
312 char pr_reg_isid[PR_REG_ISID_LEN];
313 /* Used during APTPL metadata reading */
314 #define PR_APTPL_MAX_IPORT_LEN 256
315 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
316 /* Used during APTPL metadata reading */
317 #define PR_APTPL_MAX_TPORT_LEN 256
318 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
319 /* For writing out live meta data */
320 unsigned char *pr_aptpl_buf;
323 /* Reservation effects all target ports */
324 int pr_reg_all_tg_pt;
325 /* Activate Persistence across Target Power Loss */
330 /* Used for fabric initiator WWPNs using a ISID */
331 bool isid_present_at_reg;
332 u32 pr_res_mapped_lun;
333 u32 pr_aptpl_target_lun;
334 u32 pr_res_generation;
337 atomic_t pr_res_holders;
338 struct se_node_acl *pr_reg_nacl;
339 struct se_dev_entry *pr_reg_deve;
340 struct se_lun *pr_reg_tg_pt_lun;
341 struct list_head pr_reg_list;
342 struct list_head pr_reg_abort_list;
343 struct list_head pr_reg_aptpl_list;
344 struct list_head pr_reg_atp_list;
345 struct list_head pr_reg_atp_mem_list;
346 } ____cacheline_aligned;
349 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
350 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
351 * core_setup_reservations()
353 struct t10_reservation_ops {
354 int (*t10_reservation_check)(struct se_cmd *, u32 *);
355 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
356 int (*t10_pr_register)(struct se_cmd *);
357 int (*t10_pr_clear)(struct se_cmd *);
360 struct t10_reservation {
361 /* Reservation effects all target ports */
363 /* Activate Persistence across Target Power Loss enabled
366 /* Used by struct t10_reservation->pr_aptpl_buf_len */
367 #define PR_APTPL_BUF_LEN 8192
368 u32 pr_aptpl_buf_len;
370 t10_reservations_index_t res_type;
371 spinlock_t registration_lock;
372 spinlock_t aptpl_reg_lock;
374 * This will always be set by one individual I_T Nexus.
375 * However with all_tg_pt=1, other I_T Nexus from the
376 * same initiator can access PR reg/res info on a different
379 * There is also the 'All Registrants' case, where there is
380 * a single *pr_res_holder of the reservation, but all
381 * registrations are considered reservation holders.
383 struct se_node_acl *pr_res_holder;
384 struct list_head registration_list;
385 struct list_head aptpl_reg_list;
386 struct t10_reservation_ops pr_ops;
387 } ____cacheline_aligned;
389 struct se_queue_req {
392 struct list_head qr_list;
393 } ____cacheline_aligned;
395 struct se_queue_obj {
397 spinlock_t cmd_queue_lock;
398 struct list_head qobj_list;
399 wait_queue_head_t thread_wq;
400 } ____cacheline_aligned;
403 unsigned char task_sense;
404 struct scatterlist *task_sg;
406 struct scatterlist *task_sg_bidi;
409 int task_error_status;
410 int task_state_flags;
412 unsigned long long task_lba;
416 enum dma_data_direction task_data_direction;
417 struct se_cmd *task_se_cmd;
418 struct se_device *se_dev;
419 struct completion task_stop_comp;
420 atomic_t task_active;
421 atomic_t task_execute_queue;
422 atomic_t task_timeout;
425 atomic_t task_state_active;
426 struct timer_list task_timer;
427 struct se_device *se_obj_ptr;
428 struct list_head t_list;
429 struct list_head t_execute_list;
430 struct list_head t_state_list;
431 } ____cacheline_aligned;
434 /* SAM response code being sent to initiator */
438 u8 scsi_sense_reason;
439 u16 scsi_sense_length;
440 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
441 int alua_nonop_delay;
442 /* See include/linux/dma-mapping.h */
443 enum dma_data_direction data_direction;
444 /* For SAM Task Attribute */
446 /* Transport protocol dependent state, see transport_state_table */
447 enum transport_state_table t_state;
448 /* Transport protocol dependent state for out of order CmdSNs */
449 int deferred_t_state;
450 /* Transport specific error status */
451 int transport_error_status;
452 /* See se_cmd_flags_table */
455 /* Total size in bytes associated with command */
457 /* SCSI Presented Data Transfer Length */
461 /* Persistent Reservation key */
463 atomic_t transport_sent;
464 /* Used for sense data */
466 struct list_head se_delayed_node;
467 struct list_head se_ordered_node;
468 struct list_head se_lun_node;
469 struct list_head se_qf_node;
470 struct se_device *se_dev;
471 struct se_dev_entry *se_deve;
472 struct se_device *se_obj_ptr;
473 struct se_device *se_orig_obj_ptr;
474 struct se_lun *se_lun;
475 /* Only used for internal passthrough and legacy TCM fabric modules */
476 struct se_session *se_sess;
477 struct se_tmr_req *se_tmr_req;
478 struct list_head se_queue_node;
479 struct target_core_fabric_ops *se_tfo;
480 int (*transport_emulate_cdb)(struct se_cmd *);
481 void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *);
482 void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
483 void (*transport_complete_callback)(struct se_cmd *);
484 int (*transport_qf_callback)(struct se_cmd *);
486 unsigned char *t_task_cdb;
487 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
488 unsigned long long t_task_lba;
493 u32 t_tasks_se_bidi_num;
494 u32 t_tasks_sg_chained_no;
497 atomic_t t_task_cdbs_left;
498 atomic_t t_task_cdbs_ex_left;
499 atomic_t t_task_cdbs_timeout_left;
500 atomic_t t_task_cdbs_sent;
501 atomic_t t_transport_aborted;
502 atomic_t t_transport_active;
503 atomic_t t_transport_complete;
504 atomic_t t_transport_queue_active;
505 atomic_t t_transport_sent;
506 atomic_t t_transport_stop;
507 atomic_t t_transport_timeout;
508 atomic_t transport_dev_active;
509 atomic_t transport_lun_active;
510 atomic_t transport_lun_fe_stop;
511 atomic_t transport_lun_stop;
512 spinlock_t t_state_lock;
513 struct completion t_transport_stop_comp;
514 struct completion transport_lun_fe_stop_comp;
515 struct completion transport_lun_stop_comp;
516 struct scatterlist *t_tasks_sg_chained;
519 * Used for pre-registered fabric SGL passthrough WRITE and READ
520 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
521 * and other HW target mode fabric modules.
523 struct scatterlist *t_task_pt_sgl;
524 u32 t_task_pt_sgl_num;
525 struct list_head t_mem_list;
526 /* Used for BIDI READ */
527 struct list_head t_mem_bidi_list;
528 struct list_head t_task_list;
531 } ____cacheline_aligned;
534 /* Task Management function to be preformed */
536 /* Task Management response to send */
539 /* Reference to ITT that Task Mgmt should be preformed */
541 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
543 void *fabric_tmr_ptr;
544 struct se_cmd *task_cmd;
545 struct se_cmd *ref_cmd;
546 struct se_device *tmr_dev;
547 struct se_lun *tmr_lun;
548 struct list_head tmr_list;
549 } ____cacheline_aligned;
554 struct se_node_acl *ua_nacl;
555 struct list_head ua_dev_list;
556 struct list_head ua_nacl_list;
557 } ____cacheline_aligned;
560 char initiatorname[TRANSPORT_IQN_LEN];
561 /* Used to signal demo mode created ACL, disabled by default */
562 bool dynamic_node_acl;
568 spinlock_t stats_lock;
569 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
570 atomic_t acl_pr_ref_count;
571 struct se_dev_entry *device_list;
572 struct se_session *nacl_sess;
573 struct se_portal_group *se_tpg;
574 spinlock_t device_list_lock;
575 spinlock_t nacl_sess_lock;
576 struct config_group acl_group;
577 struct config_group acl_attrib_group;
578 struct config_group acl_auth_group;
579 struct config_group acl_param_group;
580 struct config_group acl_fabric_stat_group;
581 struct config_group *acl_default_groups[5];
582 struct list_head acl_list;
583 struct list_head acl_sess_list;
584 } ____cacheline_aligned;
588 struct se_node_acl *se_node_acl;
589 struct se_portal_group *se_tpg;
590 void *fabric_sess_ptr;
591 struct list_head sess_list;
592 struct list_head sess_acl_list;
593 } ____cacheline_aligned;
596 struct se_transform_info;
599 struct se_ml_stat_grps {
600 struct config_group stat_group;
601 struct config_group scsi_auth_intr_group;
602 struct config_group scsi_att_intr_port_group;
606 char initiatorname[TRANSPORT_IQN_LEN];
608 struct se_node_acl *se_lun_nacl;
609 struct se_lun *se_lun;
610 struct list_head lacl_list;
611 struct config_group se_lun_group;
612 struct se_ml_stat_grps ml_stat_grps;
613 } ____cacheline_aligned;
615 struct se_dev_entry {
616 bool def_pr_registered;
617 /* See transport_lunflags_table */
631 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
632 atomic_t pr_ref_count;
633 struct se_lun_acl *se_lun_acl;
635 struct se_lun *se_lun;
636 struct list_head alua_port_list;
637 struct list_head ua_list;
638 } ____cacheline_aligned;
640 struct se_dev_limits {
641 /* Max supported HW queue depth */
643 /* Max supported virtual queue depth */
645 /* From include/linux/blkdev.h for the other HW/SW limits. */
646 struct queue_limits limits;
647 } ____cacheline_aligned;
649 struct se_dev_attrib {
651 int emulate_fua_write;
652 int emulate_fua_read;
653 int emulate_write_cache;
654 int emulate_ua_intlck_ctrl;
658 int emulate_reservations;
660 int enforce_pr_isids;
670 u32 max_unmap_lba_count;
671 u32 max_unmap_block_desc_count;
672 u32 unmap_granularity;
673 u32 unmap_granularity_alignment;
674 struct se_subsystem_dev *da_sub_dev;
675 struct config_group da_group;
676 } ____cacheline_aligned;
678 struct se_dev_stat_grps {
679 struct config_group stat_group;
680 struct config_group scsi_dev_group;
681 struct config_group scsi_tgt_dev_group;
682 struct config_group scsi_lu_group;
685 struct se_subsystem_dev {
686 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
687 #define SE_DEV_ALIAS_LEN 512
688 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
689 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
690 #define SE_UDEV_PATH_LEN 512
691 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
693 struct se_hba *se_dev_hba;
694 struct se_device *se_dev_ptr;
695 struct se_dev_attrib se_dev_attrib;
696 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
697 struct t10_alua t10_alua;
698 /* T10 Inquiry and VPD WWN Information */
699 struct t10_wwn t10_wwn;
700 /* T10 SPC-2 + SPC-3 Reservations */
701 struct t10_reservation t10_pr;
702 spinlock_t se_dev_lock;
704 struct list_head se_dev_node;
705 struct config_group se_dev_group;
706 /* For T10 Reservations */
707 struct config_group se_dev_pr_group;
708 /* For target_core_stat.c groups */
709 struct se_dev_stat_grps dev_stat_grps;
710 } ____cacheline_aligned;
713 /* Set to 1 if thread is NOT sleeping on thread_sem */
715 u8 dev_status_timer_flags;
716 /* RELATIVE TARGET PORT IDENTIFER Counter */
717 u16 dev_rpti_counter;
718 /* Used for SAM Task Attribute ordering */
719 u32 dev_cur_ordered_id;
722 /* See transport_device_status_table */
724 u32 dev_tcq_window_closed;
725 /* Physical device queue depth */
727 /* Used for SPC-2 reservations enforce of ISIDs */
728 u64 dev_res_bin_isid;
729 t10_task_attr_index_t dev_task_attr_type;
730 /* Pointer to transport specific device structure */
738 spinlock_t stats_lock;
739 /* Active commands on this virtual SE device */
740 atomic_t active_cmds;
741 atomic_t simple_cmds;
743 atomic_t dev_ordered_id;
744 atomic_t dev_tur_active;
745 atomic_t execute_tasks;
746 atomic_t dev_status_thr_count;
747 atomic_t dev_hoq_count;
748 atomic_t dev_ordered_sync;
749 atomic_t dev_qf_count;
750 struct se_obj dev_obj;
751 struct se_obj dev_access_obj;
752 struct se_obj dev_export_obj;
753 struct se_queue_obj dev_queue_obj;
754 spinlock_t delayed_cmd_lock;
755 spinlock_t ordered_cmd_lock;
756 spinlock_t execute_task_lock;
757 spinlock_t state_task_lock;
758 spinlock_t dev_alua_lock;
759 spinlock_t dev_reservation_lock;
760 spinlock_t dev_state_lock;
761 spinlock_t dev_status_lock;
762 spinlock_t dev_status_thr_lock;
763 spinlock_t se_port_lock;
764 spinlock_t se_tmr_lock;
765 spinlock_t qf_cmd_lock;
766 /* Used for legacy SPC-2 reservationsa */
767 struct se_node_acl *dev_reserved_node_acl;
768 /* Used for ALUA Logical Unit Group membership */
769 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
770 /* Used for SPC-3 Persistent Reservations */
771 struct t10_pr_registration *dev_pr_res_holder;
772 struct list_head dev_sep_list;
773 struct list_head dev_tmr_list;
774 struct timer_list dev_status_timer;
775 /* Pointer to descriptor for processing thread */
776 struct task_struct *process_thread;
777 pid_t process_thread_pid;
778 struct task_struct *dev_mgmt_thread;
779 struct work_struct qf_work_queue;
780 struct list_head delayed_cmd_list;
781 struct list_head ordered_cmd_list;
782 struct list_head execute_task_list;
783 struct list_head state_task_list;
784 struct list_head qf_cmd_list;
785 /* Pointer to associated SE HBA */
786 struct se_hba *se_hba;
787 struct se_subsystem_dev *se_sub_dev;
788 /* Pointer to template of function pointers for transport */
789 struct se_subsystem_api *transport;
790 /* Linked list for struct se_hba struct se_device list */
791 struct list_head dev_list;
792 /* Linked list for struct se_global->g_se_dev_list */
793 struct list_head g_se_dev_list;
794 } ____cacheline_aligned;
799 /* See hba_flags_table */
801 /* Virtual iSCSI devices attached. */
804 /* Pointer to transport specific host structure. */
806 /* Linked list for struct se_device */
807 struct list_head hba_dev_list;
808 struct list_head hba_node;
809 spinlock_t device_lock;
810 struct config_group hba_group;
811 struct mutex hba_access_mutex;
812 struct se_subsystem_api *transport;
813 } ____cacheline_aligned;
815 struct se_port_stat_grps {
816 struct config_group stat_group;
817 struct config_group scsi_port_group;
818 struct config_group scsi_tgt_port_group;
819 struct config_group scsi_transport_group;
823 /* See transport_lun_status_table */
824 enum transport_lun_status_table lun_status;
828 atomic_t lun_acl_count;
829 spinlock_t lun_acl_lock;
830 spinlock_t lun_cmd_lock;
831 spinlock_t lun_sep_lock;
832 struct completion lun_shutdown_comp;
833 struct list_head lun_cmd_list;
834 struct list_head lun_acl_list;
835 struct se_device *lun_se_dev;
836 struct se_port *lun_sep;
837 struct config_group lun_group;
838 struct se_port_stat_grps port_stat_grps;
839 } ____cacheline_aligned;
841 struct scsi_port_stats {
845 } ____cacheline_aligned;
848 /* RELATIVE TARGET PORT IDENTIFER */
850 int sep_tg_pt_secondary_stat;
851 int sep_tg_pt_secondary_write_md;
853 struct scsi_port_stats sep_stats;
854 /* Used for ALUA Target Port Groups membership */
855 atomic_t sep_tg_pt_gp_active;
856 atomic_t sep_tg_pt_secondary_offline;
857 /* Used for PR ALL_TG_PT=1 */
858 atomic_t sep_tg_pt_ref_cnt;
859 spinlock_t sep_alua_lock;
860 struct mutex sep_tg_pt_md_mutex;
861 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
862 struct se_lun *sep_lun;
863 struct se_portal_group *sep_tpg;
864 struct list_head sep_alua_list;
865 struct list_head sep_list;
866 } ____cacheline_aligned;
869 struct se_portal_group *tpg_np_parent;
870 struct config_group tpg_np_group;
871 } ____cacheline_aligned;
873 struct se_portal_group {
874 /* Type of target portal group, see transport_tpg_type_table */
875 enum transport_tpg_type_table se_tpg_type;
876 /* Number of ACLed Initiator Nodes for this TPG */
878 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
879 atomic_t tpg_pr_ref_count;
880 /* Spinlock for adding/removing ACLed Nodes */
881 spinlock_t acl_node_lock;
882 /* Spinlock for adding/removing sessions */
883 spinlock_t session_lock;
884 spinlock_t tpg_lun_lock;
885 /* Pointer to $FABRIC_MOD portal group */
886 void *se_tpg_fabric_ptr;
887 struct list_head se_tpg_node;
888 /* linked list for initiator ACL list */
889 struct list_head acl_node_list;
890 struct se_lun *tpg_lun_list;
891 struct se_lun tpg_virt_lun0;
892 /* List of TCM sessions associated wth this TPG */
893 struct list_head tpg_sess_list;
894 /* Pointer to $FABRIC_MOD dependent code */
895 struct target_core_fabric_ops *se_tpg_tfo;
896 struct se_wwn *se_tpg_wwn;
897 struct config_group tpg_group;
898 struct config_group *tpg_default_groups[6];
899 struct config_group tpg_lun_group;
900 struct config_group tpg_np_group;
901 struct config_group tpg_acl_group;
902 struct config_group tpg_attrib_group;
903 struct config_group tpg_param_group;
904 } ____cacheline_aligned;
907 struct target_fabric_configfs *wwn_tf;
908 struct config_group wwn_group;
909 struct config_group *wwn_default_groups[2];
910 struct config_group fabric_stat_group;
911 } ____cacheline_aligned;
913 #endif /* TARGET_CORE_BASE_H */