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"
13 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
15 /* Maximum Number of LUNs per Target Portal Group */
16 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
17 #define TRANSPORT_MAX_LUNS_PER_TPG 256
19 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
21 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
22 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
23 * 16-byte CDBs by default and require an extra allocation for
24 * 32-byte CDBs to because of legacy issues.
26 * Within TCM Core there are no such legacy limitiations, so we go ahead
27 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
28 * within all TCM Core and subsystem plugin code.
30 #define TCM_MAX_COMMAND_SIZE 32
32 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
33 * defined 96, but the real limit is 252 (or 260 including the header)
35 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
36 /* Used by transport_send_check_condition_and_sense() */
37 #define SPC_SENSE_KEY_OFFSET 2
38 #define SPC_ASC_KEY_OFFSET 12
39 #define SPC_ASCQ_KEY_OFFSET 13
40 #define TRANSPORT_IQN_LEN 224
41 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
42 #define LU_GROUP_NAME_BUF 256
43 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
44 #define TG_PT_GROUP_NAME_BUF 256
45 /* Used to parse VPD into struct t10_vpd */
46 #define VPD_TMP_BUF_SIZE 128
47 /* Used by transport_generic_cmd_sequencer() */
48 #define READ_BLOCK_LEN 6
49 #define READ_CAP_LEN 8
50 #define READ_POSITION_LEN 20
51 #define INQUIRY_LEN 36
52 /* Used by transport_get_inquiry_vpd_serial() */
53 #define INQUIRY_VPD_SERIAL_LEN 254
54 /* Used by transport_get_inquiry_vpd_device_ident() */
55 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
57 /* Attempts before moving from SHORT to LONG */
58 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
59 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
60 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
62 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
65 * struct se_subsystem_dev->su_dev_flags
67 #define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
68 #define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
69 #define SDF_USING_UDEV_PATH 0x00000004
70 #define SDF_USING_ALIAS 0x00000008
73 * struct se_device->dev_flags
75 #define DF_READ_ONLY 0x00000001
76 #define DF_SPC2_RESERVATIONS 0x00000002
77 #define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000004
79 /* struct se_dev_attrib sanity values */
80 /* Default max_unmap_lba_count */
81 #define DA_MAX_UNMAP_LBA_COUNT 0
82 /* Default max_unmap_block_desc_count */
83 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
84 /* Default unmap_granularity */
85 #define DA_UNMAP_GRANULARITY_DEFAULT 0
86 /* Default unmap_granularity_alignment */
87 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
88 /* Emulation for Direct Page Out */
89 #define DA_EMULATE_DPO 0
90 /* Emulation for Forced Unit Access WRITEs */
91 #define DA_EMULATE_FUA_WRITE 1
92 /* Emulation for Forced Unit Access READs */
93 #define DA_EMULATE_FUA_READ 0
94 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
95 #define DA_EMULATE_WRITE_CACHE 0
96 /* Emulation for UNIT ATTENTION Interlock Control */
97 #define DA_EMULATE_UA_INTLLCK_CTRL 0
98 /* Emulation for TASK_ABORTED status (TAS) by default */
99 #define DA_EMULATE_TAS 1
100 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
101 #define DA_EMULATE_TPU 0
103 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
104 * block/blk-lib.c:blkdev_issue_discard()
106 #define DA_EMULATE_TPWS 0
107 /* No Emulation for PSCSI by default */
108 #define DA_EMULATE_RESERVATIONS 0
109 /* No Emulation for PSCSI by default */
110 #define DA_EMULATE_ALUA 0
111 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
112 #define DA_ENFORCE_PR_ISIDS 1
113 #define DA_STATUS_MAX_SECTORS_MIN 16
114 #define DA_STATUS_MAX_SECTORS_MAX 8192
115 /* By default don't report non-rotating (solid state) medium */
116 #define DA_IS_NONROT 0
117 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
118 #define DA_EMULATE_REST_REORD 0
120 #define SE_MODE_PAGE_BUF 512
123 /* struct se_hba->hba_flags */
124 enum hba_flags_table {
125 HBA_FLAGS_INTERNAL_USE = 0x01,
126 HBA_FLAGS_PSCSI_MODE = 0x02,
129 /* struct se_lun->lun_status */
130 enum transport_lun_status_table {
131 TRANSPORT_LUN_STATUS_FREE = 0,
132 TRANSPORT_LUN_STATUS_ACTIVE = 1,
135 /* struct se_portal_group->se_tpg_type */
136 enum transport_tpg_type_table {
137 TRANSPORT_TPG_TYPE_NORMAL = 0,
138 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
141 /* struct se_task->task_flags */
143 TF_ACTIVE = (1 << 0),
145 TF_REQUEST_STOP = (1 << 2),
146 TF_HAS_SENSE = (1 << 3),
149 /* Special transport agnostic struct se_cmd->t_states */
150 enum transport_state_table {
151 TRANSPORT_NO_STATE = 0,
152 TRANSPORT_NEW_CMD = 1,
153 TRANSPORT_WRITE_PENDING = 3,
154 TRANSPORT_PROCESS_WRITE = 4,
155 TRANSPORT_PROCESSING = 5,
156 TRANSPORT_COMPLETE = 6,
157 TRANSPORT_PROCESS_TMR = 9,
158 TRANSPORT_ISTATE_PROCESSING = 11,
159 TRANSPORT_NEW_CMD_MAP = 16,
160 TRANSPORT_COMPLETE_QF_WP = 18,
161 TRANSPORT_COMPLETE_QF_OK = 19,
164 /* Used for struct se_cmd->se_cmd_flags */
165 enum se_cmd_flags_table {
166 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
167 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
168 SCF_EMULATED_TASK_SENSE = 0x00000004,
169 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
170 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
171 SCF_SCSI_NON_DATA_CDB = 0x00000040,
172 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
173 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
174 SCF_FUA = 0x00000200,
175 SCF_SE_LUN_CMD = 0x00000800,
176 SCF_SE_ALLOW_EOO = 0x00001000,
177 SCF_BIDI = 0x00002000,
178 SCF_SENT_CHECK_CONDITION = 0x00004000,
179 SCF_OVERFLOW_BIT = 0x00008000,
180 SCF_UNDERFLOW_BIT = 0x00010000,
181 SCF_SENT_DELAYED_TAS = 0x00020000,
182 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
183 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
184 SCF_UNUSED = 0x00100000,
185 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
188 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
189 enum transport_lunflags_table {
190 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
191 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
192 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
193 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
196 /* struct se_device->dev_status */
197 enum transport_device_status_table {
198 TRANSPORT_DEVICE_ACTIVATED = 0x01,
199 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
200 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
201 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
202 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
203 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
207 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
208 * to signal which ASC/ASCQ sense payload should be built.
210 enum tcm_sense_reason_table {
211 TCM_NON_EXISTENT_LUN = 0x01,
212 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
213 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
214 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
215 TCM_SERVICE_CRC_ERROR = 0x05,
216 TCM_SNACK_REJECTED = 0x06,
217 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
218 TCM_INVALID_CDB_FIELD = 0x08,
219 TCM_INVALID_PARAMETER_LIST = 0x09,
220 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
221 TCM_UNKNOWN_MODE_PAGE = 0x0b,
222 TCM_WRITE_PROTECTED = 0x0c,
223 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
224 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
225 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
226 TCM_RESERVATION_CONFLICT = 0x10,
229 /* fabric independent task management function values */
230 enum tcm_tmreq_table {
232 TMR_ABORT_TASK_SET = 2,
234 TMR_CLEAR_TASK_SET = 4,
236 TMR_TARGET_WARM_RESET = 6,
237 TMR_TARGET_COLD_RESET = 7,
238 TMR_FABRIC_TMR = 255,
241 /* fabric independent task management response values */
242 enum tcm_tmrsp_table {
243 TMR_FUNCTION_COMPLETE = 0,
244 TMR_TASK_DOES_NOT_EXIST = 1,
245 TMR_LUN_DOES_NOT_EXIST = 2,
246 TMR_TASK_STILL_ALLEGIANT = 3,
247 TMR_TASK_FAILOVER_NOT_SUPPORTED = 4,
248 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 5,
249 TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
250 TMR_FUNCTION_REJECTED = 255,
254 atomic_t obj_access_count;
255 } ____cacheline_aligned;
258 * Used by TCM Core internally to signal if ALUA emulation is enabled or
259 * disabled, or running in with TCM/pSCSI passthrough mode
262 SPC_ALUA_PASSTHROUGH,
268 * Used by TCM Core internally to signal if SAM Task Attribute emulation
269 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
272 SAM_TASK_ATTR_PASSTHROUGH,
273 SAM_TASK_ATTR_UNTAGGED,
274 SAM_TASK_ATTR_EMULATED
275 } t10_task_attr_index_t;
278 * Used for target SCSI statistics
283 SCSI_AUTH_INTR_INDEX,
290 t10_alua_index_t alua_type;
291 /* ALUA Target Port Group ID */
292 u16 alua_tg_pt_gps_counter;
293 u32 alua_tg_pt_gps_count;
294 spinlock_t tg_pt_gps_lock;
295 struct se_subsystem_dev *t10_sub_dev;
296 /* Used for default ALUA Target Port Group */
297 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
298 /* Used for default ALUA Target Port Group ConfigFS group */
299 struct config_group alua_tg_pt_gps_group;
300 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
301 struct list_head tg_pt_gps_list;
302 } ____cacheline_aligned;
304 struct t10_alua_lu_gp {
308 atomic_t lu_gp_ref_cnt;
309 spinlock_t lu_gp_lock;
310 struct config_group lu_gp_group;
311 struct list_head lu_gp_node;
312 struct list_head lu_gp_mem_list;
313 } ____cacheline_aligned;
315 struct t10_alua_lu_gp_member {
317 atomic_t lu_gp_mem_ref_cnt;
318 spinlock_t lu_gp_mem_lock;
319 struct t10_alua_lu_gp *lu_gp;
320 struct se_device *lu_gp_mem_dev;
321 struct list_head lu_gp_mem_list;
322 } ____cacheline_aligned;
324 struct t10_alua_tg_pt_gp {
326 int tg_pt_gp_valid_id;
327 int tg_pt_gp_alua_access_status;
328 int tg_pt_gp_alua_access_type;
329 int tg_pt_gp_nonop_delay_msecs;
330 int tg_pt_gp_trans_delay_msecs;
332 int tg_pt_gp_write_metadata;
333 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
334 #define ALUA_MD_BUF_LEN 1024
335 u32 tg_pt_gp_md_buf_len;
336 u32 tg_pt_gp_members;
337 atomic_t tg_pt_gp_alua_access_state;
338 atomic_t tg_pt_gp_ref_cnt;
339 spinlock_t tg_pt_gp_lock;
340 struct mutex tg_pt_gp_md_mutex;
341 struct se_subsystem_dev *tg_pt_gp_su_dev;
342 struct config_group tg_pt_gp_group;
343 struct list_head tg_pt_gp_list;
344 struct list_head tg_pt_gp_mem_list;
345 } ____cacheline_aligned;
347 struct t10_alua_tg_pt_gp_member {
349 atomic_t tg_pt_gp_mem_ref_cnt;
350 spinlock_t tg_pt_gp_mem_lock;
351 struct t10_alua_tg_pt_gp *tg_pt_gp;
352 struct se_port *tg_pt;
353 struct list_head tg_pt_gp_mem_list;
354 } ____cacheline_aligned;
357 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
358 int protocol_identifier_set;
359 u32 protocol_identifier;
360 u32 device_identifier_code_set;
362 u32 device_identifier_type;
363 struct list_head vpd_list;
364 } ____cacheline_aligned;
370 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
371 spinlock_t t10_vpd_lock;
372 struct se_subsystem_dev *t10_sub_dev;
373 struct config_group t10_wwn_group;
374 struct list_head t10_vpd_list;
375 } ____cacheline_aligned;
379 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
380 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
386 SPC3_PERSISTENT_RESERVATIONS
387 } t10_reservations_index_t;
389 struct t10_pr_registration {
390 /* Used for fabrics that contain WWN+ISID */
391 #define PR_REG_ISID_LEN 16
392 /* PR_REG_ISID_LEN + ',i,0x' */
393 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
394 char pr_reg_isid[PR_REG_ISID_LEN];
395 /* Used during APTPL metadata reading */
396 #define PR_APTPL_MAX_IPORT_LEN 256
397 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
398 /* Used during APTPL metadata reading */
399 #define PR_APTPL_MAX_TPORT_LEN 256
400 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
401 /* For writing out live meta data */
402 unsigned char *pr_aptpl_buf;
405 /* Reservation effects all target ports */
406 int pr_reg_all_tg_pt;
407 /* Activate Persistence across Target Power Loss */
412 /* Used for fabric initiator WWPNs using a ISID */
413 bool isid_present_at_reg;
414 u32 pr_res_mapped_lun;
415 u32 pr_aptpl_target_lun;
416 u32 pr_res_generation;
419 atomic_t pr_res_holders;
420 struct se_node_acl *pr_reg_nacl;
421 struct se_dev_entry *pr_reg_deve;
422 struct se_lun *pr_reg_tg_pt_lun;
423 struct list_head pr_reg_list;
424 struct list_head pr_reg_abort_list;
425 struct list_head pr_reg_aptpl_list;
426 struct list_head pr_reg_atp_list;
427 struct list_head pr_reg_atp_mem_list;
428 } ____cacheline_aligned;
431 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
432 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
433 * core_setup_reservations()
435 struct t10_reservation_ops {
436 int (*t10_reservation_check)(struct se_cmd *, u32 *);
437 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
438 int (*t10_pr_register)(struct se_cmd *);
439 int (*t10_pr_clear)(struct se_cmd *);
442 struct t10_reservation {
443 /* Reservation effects all target ports */
445 /* Activate Persistence across Target Power Loss enabled
448 /* Used by struct t10_reservation->pr_aptpl_buf_len */
449 #define PR_APTPL_BUF_LEN 8192
450 u32 pr_aptpl_buf_len;
452 t10_reservations_index_t res_type;
453 spinlock_t registration_lock;
454 spinlock_t aptpl_reg_lock;
456 * This will always be set by one individual I_T Nexus.
457 * However with all_tg_pt=1, other I_T Nexus from the
458 * same initiator can access PR reg/res info on a different
461 * There is also the 'All Registrants' case, where there is
462 * a single *pr_res_holder of the reservation, but all
463 * registrations are considered reservation holders.
465 struct se_node_acl *pr_res_holder;
466 struct list_head registration_list;
467 struct list_head aptpl_reg_list;
468 struct t10_reservation_ops pr_ops;
469 } ____cacheline_aligned;
471 struct se_queue_req {
474 struct list_head qr_list;
475 } ____cacheline_aligned;
477 struct se_queue_obj {
479 spinlock_t cmd_queue_lock;
480 struct list_head qobj_list;
481 wait_queue_head_t thread_wq;
482 } ____cacheline_aligned;
485 unsigned long long task_lba;
488 struct se_cmd *task_se_cmd;
489 struct scatterlist *task_sg;
493 enum dma_data_direction task_data_direction;
494 struct list_head t_list;
495 struct list_head t_execute_list;
496 struct list_head t_state_list;
498 struct completion task_stop_comp;
499 } ____cacheline_aligned;
502 /* SAM response code being sent to initiator */
506 u8 scsi_sense_reason;
507 u16 scsi_sense_length;
508 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
509 int alua_nonop_delay;
510 /* See include/linux/dma-mapping.h */
511 enum dma_data_direction data_direction;
512 /* For SAM Task Attribute */
514 /* Transport protocol dependent state, see transport_state_table */
515 enum transport_state_table t_state;
516 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
517 unsigned check_release:1;
518 unsigned cmd_wait_set:1;
519 /* See se_cmd_flags_table */
522 /* Total size in bytes associated with command */
524 /* SCSI Presented Data Transfer Length */
528 /* Persistent Reservation key */
530 /* Used for sense data */
532 struct list_head se_delayed_node;
533 struct list_head se_lun_node;
534 struct list_head se_qf_node;
535 struct se_device *se_dev;
536 struct se_dev_entry *se_deve;
537 struct se_lun *se_lun;
538 /* Only used for internal passthrough and legacy TCM fabric modules */
539 struct se_session *se_sess;
540 struct se_tmr_req *se_tmr_req;
541 struct list_head se_queue_node;
542 struct list_head se_cmd_list;
543 struct completion cmd_wait_comp;
544 struct target_core_fabric_ops *se_tfo;
545 int (*execute_task)(struct se_task *);
546 void (*transport_complete_callback)(struct se_cmd *);
548 unsigned char *t_task_cdb;
549 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
550 unsigned long long t_task_lba;
552 u32 t_tasks_sg_chained_no;
555 atomic_t t_task_cdbs_left;
556 atomic_t t_task_cdbs_ex_left;
557 atomic_t t_task_cdbs_sent;
558 atomic_t t_transport_aborted;
559 atomic_t t_transport_active;
560 atomic_t t_transport_complete;
561 atomic_t t_transport_queue_active;
562 atomic_t t_transport_sent;
563 atomic_t t_transport_stop;
564 atomic_t transport_dev_active;
565 atomic_t transport_lun_active;
566 atomic_t transport_lun_fe_stop;
567 atomic_t transport_lun_stop;
568 spinlock_t t_state_lock;
569 struct completion t_transport_stop_comp;
570 struct completion transport_lun_fe_stop_comp;
571 struct completion transport_lun_stop_comp;
572 struct scatterlist *t_tasks_sg_chained;
574 struct work_struct work;
576 struct scatterlist *t_data_sg;
577 unsigned int t_data_nents;
578 struct scatterlist *t_bidi_data_sg;
579 unsigned int t_bidi_data_nents;
581 /* Used for BIDI READ */
582 struct list_head t_task_list;
585 } ____cacheline_aligned;
588 /* Task Management function to be preformed */
590 /* Task Management response to send */
593 /* Reference to ITT that Task Mgmt should be preformed */
595 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
597 void *fabric_tmr_ptr;
598 struct se_cmd *task_cmd;
599 struct se_cmd *ref_cmd;
600 struct se_device *tmr_dev;
601 struct se_lun *tmr_lun;
602 struct list_head tmr_list;
603 } ____cacheline_aligned;
608 struct se_node_acl *ua_nacl;
609 struct list_head ua_dev_list;
610 struct list_head ua_nacl_list;
611 } ____cacheline_aligned;
614 char initiatorname[TRANSPORT_IQN_LEN];
615 /* Used to signal demo mode created ACL, disabled by default */
616 bool dynamic_node_acl;
622 spinlock_t stats_lock;
623 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
624 atomic_t acl_pr_ref_count;
625 struct se_dev_entry *device_list;
626 struct se_session *nacl_sess;
627 struct se_portal_group *se_tpg;
628 spinlock_t device_list_lock;
629 spinlock_t nacl_sess_lock;
630 struct config_group acl_group;
631 struct config_group acl_attrib_group;
632 struct config_group acl_auth_group;
633 struct config_group acl_param_group;
634 struct config_group acl_fabric_stat_group;
635 struct config_group *acl_default_groups[5];
636 struct list_head acl_list;
637 struct list_head acl_sess_list;
638 } ____cacheline_aligned;
641 unsigned sess_tearing_down:1;
643 struct se_node_acl *se_node_acl;
644 struct se_portal_group *se_tpg;
645 void *fabric_sess_ptr;
646 struct list_head sess_list;
647 struct list_head sess_acl_list;
648 struct list_head sess_cmd_list;
649 struct list_head sess_wait_list;
650 spinlock_t sess_cmd_lock;
651 } ____cacheline_aligned;
654 struct se_transform_info;
657 struct se_ml_stat_grps {
658 struct config_group stat_group;
659 struct config_group scsi_auth_intr_group;
660 struct config_group scsi_att_intr_port_group;
664 char initiatorname[TRANSPORT_IQN_LEN];
666 struct se_node_acl *se_lun_nacl;
667 struct se_lun *se_lun;
668 struct list_head lacl_list;
669 struct config_group se_lun_group;
670 struct se_ml_stat_grps ml_stat_grps;
671 } ____cacheline_aligned;
673 struct se_dev_entry {
674 bool def_pr_registered;
675 /* See transport_lunflags_table */
689 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
690 atomic_t pr_ref_count;
691 struct se_lun_acl *se_lun_acl;
693 struct se_lun *se_lun;
694 struct list_head alua_port_list;
695 struct list_head ua_list;
696 } ____cacheline_aligned;
698 struct se_dev_limits {
699 /* Max supported HW queue depth */
701 /* Max supported virtual queue depth */
703 /* From include/linux/blkdev.h for the other HW/SW limits. */
704 struct queue_limits limits;
705 } ____cacheline_aligned;
707 struct se_dev_attrib {
709 int emulate_fua_write;
710 int emulate_fua_read;
711 int emulate_write_cache;
712 int emulate_ua_intlck_ctrl;
716 int emulate_reservations;
718 int enforce_pr_isids;
720 int emulate_rest_reord;
728 u32 max_unmap_lba_count;
729 u32 max_unmap_block_desc_count;
730 u32 unmap_granularity;
731 u32 unmap_granularity_alignment;
732 struct se_subsystem_dev *da_sub_dev;
733 struct config_group da_group;
734 } ____cacheline_aligned;
736 struct se_dev_stat_grps {
737 struct config_group stat_group;
738 struct config_group scsi_dev_group;
739 struct config_group scsi_tgt_dev_group;
740 struct config_group scsi_lu_group;
743 struct se_subsystem_dev {
744 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
745 #define SE_DEV_ALIAS_LEN 512
746 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
747 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
748 #define SE_UDEV_PATH_LEN 512
749 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
751 struct se_hba *se_dev_hba;
752 struct se_device *se_dev_ptr;
753 struct se_dev_attrib se_dev_attrib;
754 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
755 struct t10_alua t10_alua;
756 /* T10 Inquiry and VPD WWN Information */
757 struct t10_wwn t10_wwn;
758 /* T10 SPC-2 + SPC-3 Reservations */
759 struct t10_reservation t10_pr;
760 spinlock_t se_dev_lock;
762 struct config_group se_dev_group;
763 /* For T10 Reservations */
764 struct config_group se_dev_pr_group;
765 /* For target_core_stat.c groups */
766 struct se_dev_stat_grps dev_stat_grps;
767 } ____cacheline_aligned;
770 /* RELATIVE TARGET PORT IDENTIFER Counter */
771 u16 dev_rpti_counter;
772 /* Used for SAM Task Attribute ordering */
773 u32 dev_cur_ordered_id;
776 /* See transport_device_status_table */
778 u32 dev_tcq_window_closed;
779 /* Physical device queue depth */
781 /* Used for SPC-2 reservations enforce of ISIDs */
782 u64 dev_res_bin_isid;
783 t10_task_attr_index_t dev_task_attr_type;
784 /* Pointer to transport specific device structure */
792 spinlock_t stats_lock;
793 /* Active commands on this virtual SE device */
794 atomic_t simple_cmds;
796 atomic_t dev_ordered_id;
797 atomic_t execute_tasks;
798 atomic_t dev_ordered_sync;
799 atomic_t dev_qf_count;
800 struct se_obj dev_obj;
801 struct se_obj dev_access_obj;
802 struct se_obj dev_export_obj;
803 struct se_queue_obj dev_queue_obj;
804 spinlock_t delayed_cmd_lock;
805 spinlock_t execute_task_lock;
806 spinlock_t dev_reservation_lock;
807 spinlock_t dev_status_lock;
808 spinlock_t se_port_lock;
809 spinlock_t se_tmr_lock;
810 spinlock_t qf_cmd_lock;
811 /* Used for legacy SPC-2 reservationsa */
812 struct se_node_acl *dev_reserved_node_acl;
813 /* Used for ALUA Logical Unit Group membership */
814 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
815 /* Used for SPC-3 Persistent Reservations */
816 struct t10_pr_registration *dev_pr_res_holder;
817 struct list_head dev_sep_list;
818 struct list_head dev_tmr_list;
819 /* Pointer to descriptor for processing thread */
820 struct task_struct *process_thread;
821 struct work_struct qf_work_queue;
822 struct list_head delayed_cmd_list;
823 struct list_head execute_task_list;
824 struct list_head state_task_list;
825 struct list_head qf_cmd_list;
826 /* Pointer to associated SE HBA */
827 struct se_hba *se_hba;
828 struct se_subsystem_dev *se_sub_dev;
829 /* Pointer to template of function pointers for transport */
830 struct se_subsystem_api *transport;
831 /* Linked list for struct se_hba struct se_device list */
832 struct list_head dev_list;
833 } ____cacheline_aligned;
838 /* See hba_flags_table */
840 /* Virtual iSCSI devices attached. */
843 /* Pointer to transport specific host structure. */
845 /* Linked list for struct se_device */
846 struct list_head hba_dev_list;
847 struct list_head hba_node;
848 spinlock_t device_lock;
849 struct config_group hba_group;
850 struct mutex hba_access_mutex;
851 struct se_subsystem_api *transport;
852 } ____cacheline_aligned;
854 struct se_port_stat_grps {
855 struct config_group stat_group;
856 struct config_group scsi_port_group;
857 struct config_group scsi_tgt_port_group;
858 struct config_group scsi_transport_group;
862 /* See transport_lun_status_table */
863 enum transport_lun_status_table lun_status;
867 atomic_t lun_acl_count;
868 spinlock_t lun_acl_lock;
869 spinlock_t lun_cmd_lock;
870 spinlock_t lun_sep_lock;
871 struct completion lun_shutdown_comp;
872 struct list_head lun_cmd_list;
873 struct list_head lun_acl_list;
874 struct se_device *lun_se_dev;
875 struct se_port *lun_sep;
876 struct config_group lun_group;
877 struct se_port_stat_grps port_stat_grps;
878 } ____cacheline_aligned;
880 struct scsi_port_stats {
884 } ____cacheline_aligned;
887 /* RELATIVE TARGET PORT IDENTIFER */
889 int sep_tg_pt_secondary_stat;
890 int sep_tg_pt_secondary_write_md;
892 struct scsi_port_stats sep_stats;
893 /* Used for ALUA Target Port Groups membership */
894 atomic_t sep_tg_pt_secondary_offline;
895 /* Used for PR ALL_TG_PT=1 */
896 atomic_t sep_tg_pt_ref_cnt;
897 spinlock_t sep_alua_lock;
898 struct mutex sep_tg_pt_md_mutex;
899 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
900 struct se_lun *sep_lun;
901 struct se_portal_group *sep_tpg;
902 struct list_head sep_alua_list;
903 struct list_head sep_list;
904 } ____cacheline_aligned;
907 struct se_portal_group *tpg_np_parent;
908 struct config_group tpg_np_group;
909 } ____cacheline_aligned;
911 struct se_portal_group {
912 /* Type of target portal group, see transport_tpg_type_table */
913 enum transport_tpg_type_table se_tpg_type;
914 /* Number of ACLed Initiator Nodes for this TPG */
916 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
917 atomic_t tpg_pr_ref_count;
918 /* Spinlock for adding/removing ACLed Nodes */
919 spinlock_t acl_node_lock;
920 /* Spinlock for adding/removing sessions */
921 spinlock_t session_lock;
922 spinlock_t tpg_lun_lock;
923 /* Pointer to $FABRIC_MOD portal group */
924 void *se_tpg_fabric_ptr;
925 struct list_head se_tpg_node;
926 /* linked list for initiator ACL list */
927 struct list_head acl_node_list;
928 struct se_lun *tpg_lun_list;
929 struct se_lun tpg_virt_lun0;
930 /* List of TCM sessions associated wth this TPG */
931 struct list_head tpg_sess_list;
932 /* Pointer to $FABRIC_MOD dependent code */
933 struct target_core_fabric_ops *se_tpg_tfo;
934 struct se_wwn *se_tpg_wwn;
935 struct config_group tpg_group;
936 struct config_group *tpg_default_groups[6];
937 struct config_group tpg_lun_group;
938 struct config_group tpg_np_group;
939 struct config_group tpg_acl_group;
940 struct config_group tpg_attrib_group;
941 struct config_group tpg_param_group;
942 } ____cacheline_aligned;
945 struct target_fabric_configfs *wwn_tf;
946 struct config_group wwn_group;
947 struct config_group *wwn_default_groups[2];
948 struct config_group fabric_stat_group;
949 } ____cacheline_aligned;
951 #endif /* TARGET_CORE_BASE_H */