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 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
19 #define TRANSPORT_MAX_LUNS_PER_TPG 256
21 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
23 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
24 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
25 * 16-byte CDBs by default and require an extra allocation for
26 * 32-byte CDBs to because of legacy issues.
28 * Within TCM Core there are no such legacy limitiations, so we go ahead
29 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
30 * within all TCM Core and subsystem plugin code.
32 #define TCM_MAX_COMMAND_SIZE 32
34 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
35 * defined 96, but the real limit is 252 (or 260 including the header)
37 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
38 /* Used by transport_send_check_condition_and_sense() */
39 #define SPC_SENSE_KEY_OFFSET 2
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,
103 TRANSPORT_COMPLETE_QF_WP = 18,
106 /* Used for struct se_cmd->se_cmd_flags */
107 enum se_cmd_flags_table {
108 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
109 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
110 SCF_EMULATED_TASK_SENSE = 0x00000004,
111 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
112 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
113 SCF_SCSI_NON_DATA_CDB = 0x00000040,
114 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
115 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
116 SCF_SE_CMD_FAILED = 0x00000400,
117 SCF_SE_LUN_CMD = 0x00000800,
118 SCF_SE_ALLOW_EOO = 0x00001000,
119 SCF_SENT_CHECK_CONDITION = 0x00004000,
120 SCF_OVERFLOW_BIT = 0x00008000,
121 SCF_UNDERFLOW_BIT = 0x00010000,
122 SCF_SENT_DELAYED_TAS = 0x00020000,
123 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
124 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
125 SCF_UNUSED = 0x00100000,
126 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
127 SCF_EMULATE_CDB_ASYNC = 0x01000000,
128 SCF_EMULATE_QUEUE_FULL = 0x02000000,
131 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
132 enum transport_lunflags_table {
133 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
134 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
135 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
136 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
139 /* struct se_device->dev_status */
140 enum transport_device_status_table {
141 TRANSPORT_DEVICE_ACTIVATED = 0x01,
142 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
143 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
144 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
145 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
146 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
150 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
151 * to signal which ASC/ASCQ sense payload should be built.
153 enum tcm_sense_reason_table {
154 TCM_NON_EXISTENT_LUN = 0x01,
155 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
156 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
157 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
158 TCM_SERVICE_CRC_ERROR = 0x05,
159 TCM_SNACK_REJECTED = 0x06,
160 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
161 TCM_INVALID_CDB_FIELD = 0x08,
162 TCM_INVALID_PARAMETER_LIST = 0x09,
163 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
164 TCM_UNKNOWN_MODE_PAGE = 0x0b,
165 TCM_WRITE_PROTECTED = 0x0c,
166 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
167 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
168 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
172 atomic_t obj_access_count;
173 } ____cacheline_aligned;
176 * Used by TCM Core internally to signal if ALUA emulation is enabled or
177 * disabled, or running in with TCM/pSCSI passthrough mode
180 SPC_ALUA_PASSTHROUGH,
186 * Used by TCM Core internally to signal if SAM Task Attribute emulation
187 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
190 SAM_TASK_ATTR_PASSTHROUGH,
191 SAM_TASK_ATTR_UNTAGGED,
192 SAM_TASK_ATTR_EMULATED
193 } t10_task_attr_index_t;
196 * Used for target SCSI statistics
201 SCSI_AUTH_INTR_INDEX,
208 t10_alua_index_t alua_type;
209 /* ALUA Target Port Group ID */
210 u16 alua_tg_pt_gps_counter;
211 u32 alua_tg_pt_gps_count;
212 spinlock_t tg_pt_gps_lock;
213 struct se_subsystem_dev *t10_sub_dev;
214 /* Used for default ALUA Target Port Group */
215 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
216 /* Used for default ALUA Target Port Group ConfigFS group */
217 struct config_group alua_tg_pt_gps_group;
218 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
219 struct list_head tg_pt_gps_list;
220 } ____cacheline_aligned;
222 struct t10_alua_lu_gp {
226 atomic_t lu_gp_shutdown;
227 atomic_t lu_gp_ref_cnt;
228 spinlock_t lu_gp_lock;
229 struct config_group lu_gp_group;
230 struct list_head lu_gp_node;
231 struct list_head lu_gp_mem_list;
232 } ____cacheline_aligned;
234 struct t10_alua_lu_gp_member {
236 atomic_t lu_gp_mem_ref_cnt;
237 spinlock_t lu_gp_mem_lock;
238 struct t10_alua_lu_gp *lu_gp;
239 struct se_device *lu_gp_mem_dev;
240 struct list_head lu_gp_mem_list;
241 } ____cacheline_aligned;
243 struct t10_alua_tg_pt_gp {
245 int tg_pt_gp_valid_id;
246 int tg_pt_gp_alua_access_status;
247 int tg_pt_gp_alua_access_type;
248 int tg_pt_gp_nonop_delay_msecs;
249 int tg_pt_gp_trans_delay_msecs;
251 int tg_pt_gp_write_metadata;
252 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
253 #define ALUA_MD_BUF_LEN 1024
254 u32 tg_pt_gp_md_buf_len;
255 u32 tg_pt_gp_members;
256 atomic_t tg_pt_gp_alua_access_state;
257 atomic_t tg_pt_gp_ref_cnt;
258 spinlock_t tg_pt_gp_lock;
259 struct mutex tg_pt_gp_md_mutex;
260 struct se_subsystem_dev *tg_pt_gp_su_dev;
261 struct config_group tg_pt_gp_group;
262 struct list_head tg_pt_gp_list;
263 struct list_head tg_pt_gp_mem_list;
264 } ____cacheline_aligned;
266 struct t10_alua_tg_pt_gp_member {
268 atomic_t tg_pt_gp_mem_ref_cnt;
269 spinlock_t tg_pt_gp_mem_lock;
270 struct t10_alua_tg_pt_gp *tg_pt_gp;
271 struct se_port *tg_pt;
272 struct list_head tg_pt_gp_mem_list;
273 } ____cacheline_aligned;
276 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
277 int protocol_identifier_set;
278 u32 protocol_identifier;
279 u32 device_identifier_code_set;
281 u32 device_identifier_type;
282 struct list_head vpd_list;
283 } ____cacheline_aligned;
289 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
290 spinlock_t t10_vpd_lock;
291 struct se_subsystem_dev *t10_sub_dev;
292 struct config_group t10_wwn_group;
293 struct list_head t10_vpd_list;
294 } ____cacheline_aligned;
298 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
299 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
305 SPC3_PERSISTENT_RESERVATIONS
306 } t10_reservations_index_t;
308 struct t10_pr_registration {
309 /* Used for fabrics that contain WWN+ISID */
310 #define PR_REG_ISID_LEN 16
311 /* PR_REG_ISID_LEN + ',i,0x' */
312 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
313 char pr_reg_isid[PR_REG_ISID_LEN];
314 /* Used during APTPL metadata reading */
315 #define PR_APTPL_MAX_IPORT_LEN 256
316 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
317 /* Used during APTPL metadata reading */
318 #define PR_APTPL_MAX_TPORT_LEN 256
319 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
320 /* For writing out live meta data */
321 unsigned char *pr_aptpl_buf;
324 /* Reservation effects all target ports */
325 int pr_reg_all_tg_pt;
326 /* Activate Persistence across Target Power Loss */
331 /* Used for fabric initiator WWPNs using a ISID */
332 bool isid_present_at_reg;
333 u32 pr_res_mapped_lun;
334 u32 pr_aptpl_target_lun;
335 u32 pr_res_generation;
338 atomic_t pr_res_holders;
339 struct se_node_acl *pr_reg_nacl;
340 struct se_dev_entry *pr_reg_deve;
341 struct se_lun *pr_reg_tg_pt_lun;
342 struct list_head pr_reg_list;
343 struct list_head pr_reg_abort_list;
344 struct list_head pr_reg_aptpl_list;
345 struct list_head pr_reg_atp_list;
346 struct list_head pr_reg_atp_mem_list;
347 } ____cacheline_aligned;
350 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
351 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
352 * core_setup_reservations()
354 struct t10_reservation_ops {
355 int (*t10_reservation_check)(struct se_cmd *, u32 *);
356 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
357 int (*t10_pr_register)(struct se_cmd *);
358 int (*t10_pr_clear)(struct se_cmd *);
361 struct t10_reservation {
362 /* Reservation effects all target ports */
364 /* Activate Persistence across Target Power Loss enabled
367 /* Used by struct t10_reservation->pr_aptpl_buf_len */
368 #define PR_APTPL_BUF_LEN 8192
369 u32 pr_aptpl_buf_len;
371 t10_reservations_index_t res_type;
372 spinlock_t registration_lock;
373 spinlock_t aptpl_reg_lock;
375 * This will always be set by one individual I_T Nexus.
376 * However with all_tg_pt=1, other I_T Nexus from the
377 * same initiator can access PR reg/res info on a different
380 * There is also the 'All Registrants' case, where there is
381 * a single *pr_res_holder of the reservation, but all
382 * registrations are considered reservation holders.
384 struct se_node_acl *pr_res_holder;
385 struct list_head registration_list;
386 struct list_head aptpl_reg_list;
387 struct t10_reservation_ops pr_ops;
388 } ____cacheline_aligned;
390 struct se_queue_req {
393 struct list_head qr_list;
394 } ____cacheline_aligned;
396 struct se_queue_obj {
398 spinlock_t cmd_queue_lock;
399 struct list_head qobj_list;
400 wait_queue_head_t thread_wq;
401 } ____cacheline_aligned;
404 unsigned char task_sense;
405 struct scatterlist *task_sg;
407 struct scatterlist *task_sg_bidi;
410 int task_error_status;
411 int task_state_flags;
413 unsigned long long task_lba;
417 enum dma_data_direction task_data_direction;
418 struct se_cmd *task_se_cmd;
419 struct se_device *se_dev;
420 struct completion task_stop_comp;
421 atomic_t task_active;
422 atomic_t task_execute_queue;
423 atomic_t task_timeout;
426 atomic_t task_state_active;
427 struct timer_list task_timer;
428 struct se_device *se_obj_ptr;
429 struct list_head t_list;
430 struct list_head t_execute_list;
431 struct list_head t_state_list;
432 } ____cacheline_aligned;
435 /* SAM response code being sent to initiator */
439 u8 scsi_sense_reason;
440 u16 scsi_sense_length;
441 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
442 int alua_nonop_delay;
443 /* See include/linux/dma-mapping.h */
444 enum dma_data_direction data_direction;
445 /* For SAM Task Attribute */
447 /* Transport protocol dependent state, see transport_state_table */
448 enum transport_state_table t_state;
449 /* Transport protocol dependent state for out of order CmdSNs */
450 int deferred_t_state;
451 /* Transport specific error status */
452 int transport_error_status;
453 /* See se_cmd_flags_table */
456 /* Total size in bytes associated with command */
458 /* SCSI Presented Data Transfer Length */
462 /* Persistent Reservation key */
464 atomic_t transport_sent;
465 /* Used for sense data */
467 struct list_head se_delayed_node;
468 struct list_head se_ordered_node;
469 struct list_head se_lun_node;
470 struct list_head se_qf_node;
471 struct se_device *se_dev;
472 struct se_dev_entry *se_deve;
473 struct se_device *se_obj_ptr;
474 struct se_device *se_orig_obj_ptr;
475 struct se_lun *se_lun;
476 /* Only used for internal passthrough and legacy TCM fabric modules */
477 struct se_session *se_sess;
478 struct se_tmr_req *se_tmr_req;
479 struct list_head se_queue_node;
480 struct target_core_fabric_ops *se_tfo;
481 int (*transport_emulate_cdb)(struct se_cmd *);
482 void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *);
483 void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
484 void (*transport_complete_callback)(struct se_cmd *);
485 int (*transport_qf_callback)(struct se_cmd *);
487 unsigned char *t_task_cdb;
488 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
489 unsigned long long t_task_lba;
494 u32 t_tasks_se_bidi_num;
495 u32 t_tasks_sg_chained_no;
498 atomic_t t_task_cdbs_left;
499 atomic_t t_task_cdbs_ex_left;
500 atomic_t t_task_cdbs_timeout_left;
501 atomic_t t_task_cdbs_sent;
502 atomic_t t_transport_aborted;
503 atomic_t t_transport_active;
504 atomic_t t_transport_complete;
505 atomic_t t_transport_queue_active;
506 atomic_t t_transport_sent;
507 atomic_t t_transport_stop;
508 atomic_t t_transport_timeout;
509 atomic_t transport_dev_active;
510 atomic_t transport_lun_active;
511 atomic_t transport_lun_fe_stop;
512 atomic_t transport_lun_stop;
513 spinlock_t t_state_lock;
514 struct completion t_transport_stop_comp;
515 struct completion transport_lun_fe_stop_comp;
516 struct completion transport_lun_stop_comp;
517 struct scatterlist *t_tasks_sg_chained;
520 * Used for pre-registered fabric SGL passthrough WRITE and READ
521 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
522 * and other HW target mode fabric modules.
524 struct scatterlist *t_task_pt_sgl;
525 u32 t_task_pt_sgl_num;
526 struct list_head t_mem_list;
527 /* Used for BIDI READ */
528 struct list_head t_mem_bidi_list;
529 struct list_head t_task_list;
532 } ____cacheline_aligned;
535 /* Task Management function to be preformed */
537 /* Task Management response to send */
540 /* Reference to ITT that Task Mgmt should be preformed */
542 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
544 void *fabric_tmr_ptr;
545 struct se_cmd *task_cmd;
546 struct se_cmd *ref_cmd;
547 struct se_device *tmr_dev;
548 struct se_lun *tmr_lun;
549 struct list_head tmr_list;
550 } ____cacheline_aligned;
555 struct se_node_acl *ua_nacl;
556 struct list_head ua_dev_list;
557 struct list_head ua_nacl_list;
558 } ____cacheline_aligned;
561 char initiatorname[TRANSPORT_IQN_LEN];
562 /* Used to signal demo mode created ACL, disabled by default */
563 bool dynamic_node_acl;
569 spinlock_t stats_lock;
570 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
571 atomic_t acl_pr_ref_count;
572 struct se_dev_entry *device_list;
573 struct se_session *nacl_sess;
574 struct se_portal_group *se_tpg;
575 spinlock_t device_list_lock;
576 spinlock_t nacl_sess_lock;
577 struct config_group acl_group;
578 struct config_group acl_attrib_group;
579 struct config_group acl_auth_group;
580 struct config_group acl_param_group;
581 struct config_group acl_fabric_stat_group;
582 struct config_group *acl_default_groups[5];
583 struct list_head acl_list;
584 struct list_head acl_sess_list;
585 } ____cacheline_aligned;
589 struct se_node_acl *se_node_acl;
590 struct se_portal_group *se_tpg;
591 void *fabric_sess_ptr;
592 struct list_head sess_list;
593 struct list_head sess_acl_list;
594 } ____cacheline_aligned;
597 struct se_transform_info;
600 struct se_ml_stat_grps {
601 struct config_group stat_group;
602 struct config_group scsi_auth_intr_group;
603 struct config_group scsi_att_intr_port_group;
607 char initiatorname[TRANSPORT_IQN_LEN];
609 struct se_node_acl *se_lun_nacl;
610 struct se_lun *se_lun;
611 struct list_head lacl_list;
612 struct config_group se_lun_group;
613 struct se_ml_stat_grps ml_stat_grps;
614 } ____cacheline_aligned;
616 struct se_dev_entry {
617 bool def_pr_registered;
618 /* See transport_lunflags_table */
632 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
633 atomic_t pr_ref_count;
634 struct se_lun_acl *se_lun_acl;
636 struct se_lun *se_lun;
637 struct list_head alua_port_list;
638 struct list_head ua_list;
639 } ____cacheline_aligned;
641 struct se_dev_limits {
642 /* Max supported HW queue depth */
644 /* Max supported virtual queue depth */
646 /* From include/linux/blkdev.h for the other HW/SW limits. */
647 struct queue_limits limits;
648 } ____cacheline_aligned;
650 struct se_dev_attrib {
652 int emulate_fua_write;
653 int emulate_fua_read;
654 int emulate_write_cache;
655 int emulate_ua_intlck_ctrl;
659 int emulate_reservations;
661 int enforce_pr_isids;
671 u32 max_unmap_lba_count;
672 u32 max_unmap_block_desc_count;
673 u32 unmap_granularity;
674 u32 unmap_granularity_alignment;
675 struct se_subsystem_dev *da_sub_dev;
676 struct config_group da_group;
677 } ____cacheline_aligned;
679 struct se_dev_stat_grps {
680 struct config_group stat_group;
681 struct config_group scsi_dev_group;
682 struct config_group scsi_tgt_dev_group;
683 struct config_group scsi_lu_group;
686 struct se_subsystem_dev {
687 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
688 #define SE_DEV_ALIAS_LEN 512
689 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
690 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
691 #define SE_UDEV_PATH_LEN 512
692 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
694 struct se_hba *se_dev_hba;
695 struct se_device *se_dev_ptr;
696 struct se_dev_attrib se_dev_attrib;
697 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
698 struct t10_alua t10_alua;
699 /* T10 Inquiry and VPD WWN Information */
700 struct t10_wwn t10_wwn;
701 /* T10 SPC-2 + SPC-3 Reservations */
702 struct t10_reservation t10_pr;
703 spinlock_t se_dev_lock;
705 struct list_head se_dev_node;
706 struct config_group se_dev_group;
707 /* For T10 Reservations */
708 struct config_group se_dev_pr_group;
709 /* For target_core_stat.c groups */
710 struct se_dev_stat_grps dev_stat_grps;
711 } ____cacheline_aligned;
714 /* Set to 1 if thread is NOT sleeping on thread_sem */
716 u8 dev_status_timer_flags;
717 /* RELATIVE TARGET PORT IDENTIFER Counter */
718 u16 dev_rpti_counter;
719 /* Used for SAM Task Attribute ordering */
720 u32 dev_cur_ordered_id;
723 /* See transport_device_status_table */
725 u32 dev_tcq_window_closed;
726 /* Physical device queue depth */
728 /* Used for SPC-2 reservations enforce of ISIDs */
729 u64 dev_res_bin_isid;
730 t10_task_attr_index_t dev_task_attr_type;
731 /* Pointer to transport specific device structure */
739 spinlock_t stats_lock;
740 /* Active commands on this virtual SE device */
741 atomic_t active_cmds;
742 atomic_t simple_cmds;
744 atomic_t dev_ordered_id;
745 atomic_t dev_tur_active;
746 atomic_t execute_tasks;
747 atomic_t dev_status_thr_count;
748 atomic_t dev_hoq_count;
749 atomic_t dev_ordered_sync;
750 atomic_t dev_qf_count;
751 struct se_obj dev_obj;
752 struct se_obj dev_access_obj;
753 struct se_obj dev_export_obj;
754 struct se_queue_obj dev_queue_obj;
755 spinlock_t delayed_cmd_lock;
756 spinlock_t ordered_cmd_lock;
757 spinlock_t execute_task_lock;
758 spinlock_t state_task_lock;
759 spinlock_t dev_alua_lock;
760 spinlock_t dev_reservation_lock;
761 spinlock_t dev_state_lock;
762 spinlock_t dev_status_lock;
763 spinlock_t dev_status_thr_lock;
764 spinlock_t se_port_lock;
765 spinlock_t se_tmr_lock;
766 spinlock_t qf_cmd_lock;
767 /* Used for legacy SPC-2 reservationsa */
768 struct se_node_acl *dev_reserved_node_acl;
769 /* Used for ALUA Logical Unit Group membership */
770 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
771 /* Used for SPC-3 Persistent Reservations */
772 struct t10_pr_registration *dev_pr_res_holder;
773 struct list_head dev_sep_list;
774 struct list_head dev_tmr_list;
775 struct timer_list dev_status_timer;
776 /* Pointer to descriptor for processing thread */
777 struct task_struct *process_thread;
778 pid_t process_thread_pid;
779 struct task_struct *dev_mgmt_thread;
780 struct work_struct qf_work_queue;
781 struct list_head delayed_cmd_list;
782 struct list_head ordered_cmd_list;
783 struct list_head execute_task_list;
784 struct list_head state_task_list;
785 struct list_head qf_cmd_list;
786 /* Pointer to associated SE HBA */
787 struct se_hba *se_hba;
788 struct se_subsystem_dev *se_sub_dev;
789 /* Pointer to template of function pointers for transport */
790 struct se_subsystem_api *transport;
791 /* Linked list for struct se_hba struct se_device list */
792 struct list_head dev_list;
793 /* Linked list for struct se_global->g_se_dev_list */
794 struct list_head g_se_dev_list;
795 } ____cacheline_aligned;
800 /* See hba_flags_table */
802 /* Virtual iSCSI devices attached. */
805 /* Pointer to transport specific host structure. */
807 /* Linked list for struct se_device */
808 struct list_head hba_dev_list;
809 struct list_head hba_node;
810 spinlock_t device_lock;
811 struct config_group hba_group;
812 struct mutex hba_access_mutex;
813 struct se_subsystem_api *transport;
814 } ____cacheline_aligned;
816 struct se_port_stat_grps {
817 struct config_group stat_group;
818 struct config_group scsi_port_group;
819 struct config_group scsi_tgt_port_group;
820 struct config_group scsi_transport_group;
824 /* See transport_lun_status_table */
825 enum transport_lun_status_table lun_status;
829 atomic_t lun_acl_count;
830 spinlock_t lun_acl_lock;
831 spinlock_t lun_cmd_lock;
832 spinlock_t lun_sep_lock;
833 struct completion lun_shutdown_comp;
834 struct list_head lun_cmd_list;
835 struct list_head lun_acl_list;
836 struct se_device *lun_se_dev;
837 struct se_port *lun_sep;
838 struct config_group lun_group;
839 struct se_port_stat_grps port_stat_grps;
840 } ____cacheline_aligned;
842 struct scsi_port_stats {
846 } ____cacheline_aligned;
849 /* RELATIVE TARGET PORT IDENTIFER */
851 int sep_tg_pt_secondary_stat;
852 int sep_tg_pt_secondary_write_md;
854 struct scsi_port_stats sep_stats;
855 /* Used for ALUA Target Port Groups membership */
856 atomic_t sep_tg_pt_gp_active;
857 atomic_t sep_tg_pt_secondary_offline;
858 /* Used for PR ALL_TG_PT=1 */
859 atomic_t sep_tg_pt_ref_cnt;
860 spinlock_t sep_alua_lock;
861 struct mutex sep_tg_pt_md_mutex;
862 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
863 struct se_lun *sep_lun;
864 struct se_portal_group *sep_tpg;
865 struct list_head sep_alua_list;
866 struct list_head sep_list;
867 } ____cacheline_aligned;
870 struct se_portal_group *tpg_np_parent;
871 struct config_group tpg_np_group;
872 } ____cacheline_aligned;
874 struct se_portal_group {
875 /* Type of target portal group, see transport_tpg_type_table */
876 enum transport_tpg_type_table se_tpg_type;
877 /* Number of ACLed Initiator Nodes for this TPG */
879 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
880 atomic_t tpg_pr_ref_count;
881 /* Spinlock for adding/removing ACLed Nodes */
882 spinlock_t acl_node_lock;
883 /* Spinlock for adding/removing sessions */
884 spinlock_t session_lock;
885 spinlock_t tpg_lun_lock;
886 /* Pointer to $FABRIC_MOD portal group */
887 void *se_tpg_fabric_ptr;
888 struct list_head se_tpg_node;
889 /* linked list for initiator ACL list */
890 struct list_head acl_node_list;
891 struct se_lun *tpg_lun_list;
892 struct se_lun tpg_virt_lun0;
893 /* List of TCM sessions associated wth this TPG */
894 struct list_head tpg_sess_list;
895 /* Pointer to $FABRIC_MOD dependent code */
896 struct target_core_fabric_ops *se_tpg_tfo;
897 struct se_wwn *se_tpg_wwn;
898 struct config_group tpg_group;
899 struct config_group *tpg_default_groups[6];
900 struct config_group tpg_lun_group;
901 struct config_group tpg_np_group;
902 struct config_group tpg_acl_group;
903 struct config_group tpg_attrib_group;
904 struct config_group tpg_param_group;
905 } ____cacheline_aligned;
908 struct target_fabric_configfs *wwn_tf;
909 struct config_group wwn_group;
910 struct config_group *wwn_default_groups[2];
911 struct config_group fabric_stat_group;
912 } ____cacheline_aligned;
914 #endif /* TARGET_CORE_BASE_H */