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-rc2-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_ADD_SENSE_LEN_OFFSET 7
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 /* Attempts before moving from SHORT to LONG */
59 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
60 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
61 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
63 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
65 /* struct se_dev_attrib sanity values */
66 /* Default max_unmap_lba_count */
67 #define DA_MAX_UNMAP_LBA_COUNT 0
68 /* Default max_unmap_block_desc_count */
69 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
70 /* Default unmap_granularity */
71 #define DA_UNMAP_GRANULARITY_DEFAULT 0
72 /* Default unmap_granularity_alignment */
73 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
74 /* Default max transfer length */
75 #define DA_FABRIC_MAX_SECTORS 8192
76 /* Emulation for Direct Page Out */
77 #define DA_EMULATE_DPO 0
78 /* Emulation for Forced Unit Access WRITEs */
79 #define DA_EMULATE_FUA_WRITE 1
80 /* Emulation for Forced Unit Access READs */
81 #define DA_EMULATE_FUA_READ 0
82 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
83 #define DA_EMULATE_WRITE_CACHE 0
84 /* Emulation for UNIT ATTENTION Interlock Control */
85 #define DA_EMULATE_UA_INTLLCK_CTRL 0
86 /* Emulation for TASK_ABORTED status (TAS) by default */
87 #define DA_EMULATE_TAS 1
88 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
89 #define DA_EMULATE_TPU 0
91 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
92 * block/blk-lib.c:blkdev_issue_discard()
94 #define DA_EMULATE_TPWS 0
95 /* No Emulation for PSCSI by default */
96 #define DA_EMULATE_RESERVATIONS 0
97 /* No Emulation for PSCSI by default */
98 #define DA_EMULATE_ALUA 0
99 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
100 #define DA_ENFORCE_PR_ISIDS 1
101 #define DA_STATUS_MAX_SECTORS_MIN 16
102 #define DA_STATUS_MAX_SECTORS_MAX 8192
103 /* By default don't report non-rotating (solid state) medium */
104 #define DA_IS_NONROT 0
105 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
106 #define DA_EMULATE_REST_REORD 0
108 #define SE_INQUIRY_BUF 512
109 #define SE_MODE_PAGE_BUF 512
110 #define SE_SENSE_BUF 96
112 /* struct se_hba->hba_flags */
113 enum hba_flags_table {
114 HBA_FLAGS_INTERNAL_USE = 0x01,
115 HBA_FLAGS_PSCSI_MODE = 0x02,
118 /* struct se_lun->lun_status */
119 enum transport_lun_status_table {
120 TRANSPORT_LUN_STATUS_FREE = 0,
121 TRANSPORT_LUN_STATUS_ACTIVE = 1,
124 /* struct se_portal_group->se_tpg_type */
125 enum transport_tpg_type_table {
126 TRANSPORT_TPG_TYPE_NORMAL = 0,
127 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
130 /* Special transport agnostic struct se_cmd->t_states */
131 enum transport_state_table {
132 TRANSPORT_NO_STATE = 0,
133 TRANSPORT_NEW_CMD = 1,
134 TRANSPORT_WRITE_PENDING = 3,
135 TRANSPORT_PROCESSING = 5,
136 TRANSPORT_COMPLETE = 6,
137 TRANSPORT_ISTATE_PROCESSING = 11,
138 TRANSPORT_COMPLETE_QF_WP = 18,
139 TRANSPORT_COMPLETE_QF_OK = 19,
142 /* Used for struct se_cmd->se_cmd_flags */
143 enum se_cmd_flags_table {
144 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
145 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
146 SCF_EMULATED_TASK_SENSE = 0x00000004,
147 SCF_SCSI_DATA_CDB = 0x00000008,
148 SCF_SCSI_TMR_CDB = 0x00000010,
149 SCF_SCSI_CDB_EXCEPTION = 0x00000020,
150 SCF_SCSI_RESERVATION_CONFLICT = 0x00000040,
151 SCF_FUA = 0x00000080,
152 SCF_SE_LUN_CMD = 0x00000100,
153 SCF_BIDI = 0x00000400,
154 SCF_SENT_CHECK_CONDITION = 0x00000800,
155 SCF_OVERFLOW_BIT = 0x00001000,
156 SCF_UNDERFLOW_BIT = 0x00002000,
157 SCF_SENT_DELAYED_TAS = 0x00004000,
158 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
159 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
160 SCF_ACK_KREF = 0x00040000,
163 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
164 enum transport_lunflags_table {
165 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
166 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
167 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
168 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
172 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
173 * to signal which ASC/ASCQ sense payload should be built.
175 enum tcm_sense_reason_table {
176 TCM_NON_EXISTENT_LUN = 0x01,
177 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
178 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
179 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
180 TCM_SERVICE_CRC_ERROR = 0x05,
181 TCM_SNACK_REJECTED = 0x06,
182 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
183 TCM_INVALID_CDB_FIELD = 0x08,
184 TCM_INVALID_PARAMETER_LIST = 0x09,
185 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
186 TCM_UNKNOWN_MODE_PAGE = 0x0b,
187 TCM_WRITE_PROTECTED = 0x0c,
188 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
189 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
190 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
191 TCM_RESERVATION_CONFLICT = 0x10,
192 TCM_ADDRESS_OUT_OF_RANGE = 0x11,
195 enum target_sc_flags_table {
196 TARGET_SCF_BIDI_OP = 0x01,
197 TARGET_SCF_ACK_KREF = 0x02,
198 TARGET_SCF_UNKNOWN_SIZE = 0x04,
201 /* fabric independent task management function values */
202 enum tcm_tmreq_table {
204 TMR_ABORT_TASK_SET = 2,
206 TMR_CLEAR_TASK_SET = 4,
208 TMR_TARGET_WARM_RESET = 6,
209 TMR_TARGET_COLD_RESET = 7,
210 TMR_FABRIC_TMR = 255,
213 /* fabric independent task management response values */
214 enum tcm_tmrsp_table {
215 TMR_FUNCTION_COMPLETE = 0,
216 TMR_TASK_DOES_NOT_EXIST = 1,
217 TMR_LUN_DOES_NOT_EXIST = 2,
218 TMR_TASK_STILL_ALLEGIANT = 3,
219 TMR_TASK_FAILOVER_NOT_SUPPORTED = 4,
220 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 5,
221 TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
222 TMR_FUNCTION_REJECTED = 255,
226 * Used by TCM Core internally to signal if ALUA emulation is enabled or
227 * disabled, or running in with TCM/pSCSI passthrough mode
230 SPC_ALUA_PASSTHROUGH,
236 * Used by TCM Core internally to signal if SAM Task Attribute emulation
237 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
240 SAM_TASK_ATTR_PASSTHROUGH,
241 SAM_TASK_ATTR_UNTAGGED,
242 SAM_TASK_ATTR_EMULATED
243 } t10_task_attr_index_t;
246 * Used for target SCSI statistics
251 SCSI_AUTH_INTR_INDEX,
258 t10_alua_index_t alua_type;
259 /* ALUA Target Port Group ID */
260 u16 alua_tg_pt_gps_counter;
261 u32 alua_tg_pt_gps_count;
262 spinlock_t tg_pt_gps_lock;
263 struct se_device *t10_dev;
264 /* Used for default ALUA Target Port Group */
265 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
266 /* Used for default ALUA Target Port Group ConfigFS group */
267 struct config_group alua_tg_pt_gps_group;
268 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
269 struct list_head tg_pt_gps_list;
272 struct t10_alua_lu_gp {
276 atomic_t lu_gp_ref_cnt;
277 spinlock_t lu_gp_lock;
278 struct config_group lu_gp_group;
279 struct list_head lu_gp_node;
280 struct list_head lu_gp_mem_list;
283 struct t10_alua_lu_gp_member {
285 atomic_t lu_gp_mem_ref_cnt;
286 spinlock_t lu_gp_mem_lock;
287 struct t10_alua_lu_gp *lu_gp;
288 struct se_device *lu_gp_mem_dev;
289 struct list_head lu_gp_mem_list;
292 struct t10_alua_tg_pt_gp {
294 int tg_pt_gp_valid_id;
295 int tg_pt_gp_alua_access_status;
296 int tg_pt_gp_alua_access_type;
297 int tg_pt_gp_nonop_delay_msecs;
298 int tg_pt_gp_trans_delay_msecs;
299 int tg_pt_gp_implict_trans_secs;
301 int tg_pt_gp_write_metadata;
302 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
303 #define ALUA_MD_BUF_LEN 1024
304 u32 tg_pt_gp_md_buf_len;
305 u32 tg_pt_gp_members;
306 atomic_t tg_pt_gp_alua_access_state;
307 atomic_t tg_pt_gp_ref_cnt;
308 spinlock_t tg_pt_gp_lock;
309 struct mutex tg_pt_gp_md_mutex;
310 struct se_device *tg_pt_gp_dev;
311 struct config_group tg_pt_gp_group;
312 struct list_head tg_pt_gp_list;
313 struct list_head tg_pt_gp_mem_list;
316 struct t10_alua_tg_pt_gp_member {
318 atomic_t tg_pt_gp_mem_ref_cnt;
319 spinlock_t tg_pt_gp_mem_lock;
320 struct t10_alua_tg_pt_gp *tg_pt_gp;
321 struct se_port *tg_pt;
322 struct list_head tg_pt_gp_mem_list;
326 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
327 int protocol_identifier_set;
328 u32 protocol_identifier;
329 u32 device_identifier_code_set;
331 u32 device_identifier_type;
332 struct list_head vpd_list;
339 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
340 spinlock_t t10_vpd_lock;
341 struct se_device *t10_dev;
342 struct config_group t10_wwn_group;
343 struct list_head t10_vpd_list;
348 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
349 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
355 SPC3_PERSISTENT_RESERVATIONS
356 } t10_reservations_index_t;
358 struct t10_pr_registration {
359 /* Used for fabrics that contain WWN+ISID */
360 #define PR_REG_ISID_LEN 16
361 /* PR_REG_ISID_LEN + ',i,0x' */
362 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
363 char pr_reg_isid[PR_REG_ISID_LEN];
364 /* Used during APTPL metadata reading */
365 #define PR_APTPL_MAX_IPORT_LEN 256
366 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
367 /* Used during APTPL metadata reading */
368 #define PR_APTPL_MAX_TPORT_LEN 256
369 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
370 /* For writing out live meta data */
371 unsigned char *pr_aptpl_buf;
374 /* Reservation effects all target ports */
375 int pr_reg_all_tg_pt;
376 /* Activate Persistence across Target Power Loss */
381 /* Used for fabric initiator WWPNs using a ISID */
382 bool isid_present_at_reg;
383 u32 pr_res_mapped_lun;
384 u32 pr_aptpl_target_lun;
385 u32 pr_res_generation;
388 atomic_t pr_res_holders;
389 struct se_node_acl *pr_reg_nacl;
390 struct se_dev_entry *pr_reg_deve;
391 struct se_lun *pr_reg_tg_pt_lun;
392 struct list_head pr_reg_list;
393 struct list_head pr_reg_abort_list;
394 struct list_head pr_reg_aptpl_list;
395 struct list_head pr_reg_atp_list;
396 struct list_head pr_reg_atp_mem_list;
400 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
401 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
402 * core_setup_reservations()
404 struct t10_reservation_ops {
405 int (*t10_reservation_check)(struct se_cmd *, u32 *);
406 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
407 int (*t10_pr_register)(struct se_cmd *);
408 int (*t10_pr_clear)(struct se_cmd *);
411 struct t10_reservation {
412 /* Reservation effects all target ports */
414 /* Activate Persistence across Target Power Loss enabled
417 /* Used by struct t10_reservation->pr_aptpl_buf_len */
418 #define PR_APTPL_BUF_LEN 8192
419 u32 pr_aptpl_buf_len;
421 t10_reservations_index_t res_type;
422 spinlock_t registration_lock;
423 spinlock_t aptpl_reg_lock;
425 * This will always be set by one individual I_T Nexus.
426 * However with all_tg_pt=1, other I_T Nexus from the
427 * same initiator can access PR reg/res info on a different
430 * There is also the 'All Registrants' case, where there is
431 * a single *pr_res_holder of the reservation, but all
432 * registrations are considered reservation holders.
434 struct se_node_acl *pr_res_holder;
435 struct list_head registration_list;
436 struct list_head aptpl_reg_list;
437 struct t10_reservation_ops pr_ops;
441 /* Task Management function to be performed */
443 /* Task Management response to send */
446 /* Reference to ITT that Task Mgmt should be performed */
448 void *fabric_tmr_ptr;
449 struct se_cmd *task_cmd;
450 struct se_device *tmr_dev;
451 struct se_lun *tmr_lun;
452 struct list_head tmr_list;
456 /* SAM response code being sent to initiator */
460 u8 scsi_sense_reason;
461 u16 scsi_sense_length;
462 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
463 int alua_nonop_delay;
464 /* See include/linux/dma-mapping.h */
465 enum dma_data_direction data_direction;
466 /* For SAM Task Attribute */
468 /* Transport protocol dependent state, see transport_state_table */
469 enum transport_state_table t_state;
470 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
471 unsigned check_release:1;
472 unsigned cmd_wait_set:1;
473 unsigned unknown_data_length:1;
474 /* See se_cmd_flags_table */
477 /* Total size in bytes associated with command */
481 /* Persistent Reservation key */
483 /* Used for sense data */
485 struct list_head se_delayed_node;
486 struct list_head se_lun_node;
487 struct list_head se_qf_node;
488 struct se_device *se_dev;
489 struct se_dev_entry *se_deve;
490 struct se_lun *se_lun;
491 /* Only used for internal passthrough and legacy TCM fabric modules */
492 struct se_session *se_sess;
493 struct se_tmr_req *se_tmr_req;
494 struct list_head se_cmd_list;
495 struct completion cmd_wait_comp;
496 struct kref cmd_kref;
497 struct target_core_fabric_ops *se_tfo;
498 int (*execute_cmd)(struct se_cmd *);
499 void (*transport_complete_callback)(struct se_cmd *);
501 unsigned char *t_task_cdb;
502 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
503 unsigned long long t_task_lba;
505 unsigned int transport_state;
506 #define CMD_T_ABORTED (1 << 0)
507 #define CMD_T_ACTIVE (1 << 1)
508 #define CMD_T_COMPLETE (1 << 2)
509 #define CMD_T_QUEUED (1 << 3)
510 #define CMD_T_SENT (1 << 4)
511 #define CMD_T_STOP (1 << 5)
512 #define CMD_T_FAILED (1 << 6)
513 #define CMD_T_LUN_STOP (1 << 7)
514 #define CMD_T_LUN_FE_STOP (1 << 8)
515 #define CMD_T_DEV_ACTIVE (1 << 9)
516 #define CMD_T_REQUEST_STOP (1 << 10)
517 #define CMD_T_BUSY (1 << 11)
518 spinlock_t t_state_lock;
519 struct completion t_transport_stop_comp;
520 struct completion transport_lun_fe_stop_comp;
521 struct completion transport_lun_stop_comp;
523 struct work_struct work;
525 struct scatterlist *t_data_sg;
526 unsigned int t_data_nents;
528 struct scatterlist *t_bidi_data_sg;
529 unsigned int t_bidi_data_nents;
531 struct list_head state_list;
534 /* old task stop completion, consider merging with some of the above */
535 struct completion task_stop_comp;
537 /* backend private data */
544 struct se_node_acl *ua_nacl;
545 struct list_head ua_dev_list;
546 struct list_head ua_nacl_list;
550 char initiatorname[TRANSPORT_IQN_LEN];
551 /* Used to signal demo mode created ACL, disabled by default */
552 bool dynamic_node_acl;
559 spinlock_t stats_lock;
560 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
561 atomic_t acl_pr_ref_count;
562 struct se_dev_entry **device_list;
563 struct se_session *nacl_sess;
564 struct se_portal_group *se_tpg;
565 spinlock_t device_list_lock;
566 spinlock_t nacl_sess_lock;
567 struct config_group acl_group;
568 struct config_group acl_attrib_group;
569 struct config_group acl_auth_group;
570 struct config_group acl_param_group;
571 struct config_group acl_fabric_stat_group;
572 struct config_group *acl_default_groups[5];
573 struct list_head acl_list;
574 struct list_head acl_sess_list;
575 struct completion acl_free_comp;
576 struct kref acl_kref;
580 unsigned sess_tearing_down:1;
582 struct se_node_acl *se_node_acl;
583 struct se_portal_group *se_tpg;
584 void *fabric_sess_ptr;
585 struct list_head sess_list;
586 struct list_head sess_acl_list;
587 struct list_head sess_cmd_list;
588 spinlock_t sess_cmd_lock;
589 struct kref sess_kref;
593 struct se_transform_info;
596 struct se_ml_stat_grps {
597 struct config_group stat_group;
598 struct config_group scsi_auth_intr_group;
599 struct config_group scsi_att_intr_port_group;
603 char initiatorname[TRANSPORT_IQN_LEN];
605 struct se_node_acl *se_lun_nacl;
606 struct se_lun *se_lun;
607 struct list_head lacl_list;
608 struct config_group se_lun_group;
609 struct se_ml_stat_grps ml_stat_grps;
612 struct se_dev_entry {
613 bool def_pr_registered;
614 /* See transport_lunflags_table */
628 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
629 atomic_t pr_ref_count;
630 struct se_lun_acl *se_lun_acl;
632 struct se_lun *se_lun;
633 struct list_head alua_port_list;
634 struct list_head ua_list;
637 struct se_dev_attrib {
639 int emulate_fua_write;
640 int emulate_fua_read;
641 int emulate_write_cache;
642 int emulate_ua_intlck_ctrl;
646 int emulate_reservations;
648 int enforce_pr_isids;
650 int emulate_rest_reord;
654 u32 fabric_max_sectors;
658 u32 max_unmap_lba_count;
659 u32 max_unmap_block_desc_count;
660 u32 unmap_granularity;
661 u32 unmap_granularity_alignment;
662 struct se_device *da_dev;
663 struct config_group da_group;
666 struct se_dev_stat_grps {
667 struct config_group stat_group;
668 struct config_group scsi_dev_group;
669 struct config_group scsi_tgt_dev_group;
670 struct config_group scsi_lu_group;
674 /* RELATIVE TARGET PORT IDENTIFER Counter */
675 u16 dev_rpti_counter;
676 /* Used for SAM Task Attribute ordering */
677 u32 dev_cur_ordered_id;
679 #define DF_CONFIGURED 0x00000001
680 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
681 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
682 #define DF_USING_UDEV_PATH 0x00000008
683 #define DF_USING_ALIAS 0x00000010
685 /* Physical device queue depth */
687 /* Used for SPC-2 reservations enforce of ISIDs */
688 u64 dev_res_bin_isid;
689 t10_task_attr_index_t dev_task_attr_type;
690 /* Pointer to transport specific device structure */
697 spinlock_t stats_lock;
698 /* Active commands on this virtual SE device */
699 atomic_t simple_cmds;
700 atomic_t dev_ordered_id;
701 atomic_t dev_ordered_sync;
702 atomic_t dev_qf_count;
704 spinlock_t delayed_cmd_lock;
705 spinlock_t execute_task_lock;
706 spinlock_t dev_reservation_lock;
707 unsigned int dev_reservation_flags;
708 #define DRF_SPC2_RESERVATIONS 0x00000001
709 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
710 spinlock_t se_port_lock;
711 spinlock_t se_tmr_lock;
712 spinlock_t qf_cmd_lock;
713 /* Used for legacy SPC-2 reservationsa */
714 struct se_node_acl *dev_reserved_node_acl;
715 /* Used for ALUA Logical Unit Group membership */
716 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
717 /* Used for SPC-3 Persistent Reservations */
718 struct t10_pr_registration *dev_pr_res_holder;
719 struct list_head dev_sep_list;
720 struct list_head dev_tmr_list;
721 struct workqueue_struct *tmr_wq;
722 struct work_struct qf_work_queue;
723 struct list_head delayed_cmd_list;
724 struct list_head state_list;
725 struct list_head qf_cmd_list;
726 /* Pointer to associated SE HBA */
727 struct se_hba *se_hba;
728 /* T10 Inquiry and VPD WWN Information */
729 struct t10_wwn t10_wwn;
730 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
731 struct t10_alua t10_alua;
732 /* T10 SPC-2 + SPC-3 Reservations */
733 struct t10_reservation t10_pr;
734 struct se_dev_attrib dev_attrib;
735 struct config_group dev_group;
736 struct config_group dev_pr_group;
737 struct se_dev_stat_grps dev_stat_grps;
738 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
739 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
740 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
741 unsigned char udev_path[SE_UDEV_PATH_LEN];
742 /* Pointer to template of function pointers for transport */
743 struct se_subsystem_api *transport;
744 /* Linked list for struct se_hba struct se_device list */
745 struct list_head dev_list;
751 /* See hba_flags_table */
753 /* Virtual iSCSI devices attached. */
756 /* Pointer to transport specific host structure. */
758 struct list_head hba_node;
759 spinlock_t device_lock;
760 struct config_group hba_group;
761 struct mutex hba_access_mutex;
762 struct se_subsystem_api *transport;
765 struct se_port_stat_grps {
766 struct config_group stat_group;
767 struct config_group scsi_port_group;
768 struct config_group scsi_tgt_port_group;
769 struct config_group scsi_transport_group;
773 /* See transport_lun_status_table */
774 enum transport_lun_status_table lun_status;
778 atomic_t lun_acl_count;
779 spinlock_t lun_acl_lock;
780 spinlock_t lun_cmd_lock;
781 spinlock_t lun_sep_lock;
782 struct completion lun_shutdown_comp;
783 struct list_head lun_cmd_list;
784 struct list_head lun_acl_list;
785 struct se_device *lun_se_dev;
786 struct se_port *lun_sep;
787 struct config_group lun_group;
788 struct se_port_stat_grps port_stat_grps;
791 struct scsi_port_stats {
798 /* RELATIVE TARGET PORT IDENTIFER */
800 int sep_tg_pt_secondary_stat;
801 int sep_tg_pt_secondary_write_md;
803 struct scsi_port_stats sep_stats;
804 /* Used for ALUA Target Port Groups membership */
805 atomic_t sep_tg_pt_secondary_offline;
806 /* Used for PR ALL_TG_PT=1 */
807 atomic_t sep_tg_pt_ref_cnt;
808 spinlock_t sep_alua_lock;
809 struct mutex sep_tg_pt_md_mutex;
810 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
811 struct se_lun *sep_lun;
812 struct se_portal_group *sep_tpg;
813 struct list_head sep_alua_list;
814 struct list_head sep_list;
818 struct se_portal_group *tpg_np_parent;
819 struct config_group tpg_np_group;
822 struct se_portal_group {
823 /* Type of target portal group, see transport_tpg_type_table */
824 enum transport_tpg_type_table se_tpg_type;
825 /* Number of ACLed Initiator Nodes for this TPG */
827 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
828 atomic_t tpg_pr_ref_count;
829 /* Spinlock for adding/removing ACLed Nodes */
830 spinlock_t acl_node_lock;
831 /* Spinlock for adding/removing sessions */
832 spinlock_t session_lock;
833 spinlock_t tpg_lun_lock;
834 /* Pointer to $FABRIC_MOD portal group */
835 void *se_tpg_fabric_ptr;
836 struct list_head se_tpg_node;
837 /* linked list for initiator ACL list */
838 struct list_head acl_node_list;
839 struct se_lun **tpg_lun_list;
840 struct se_lun tpg_virt_lun0;
841 /* List of TCM sessions associated wth this TPG */
842 struct list_head tpg_sess_list;
843 /* Pointer to $FABRIC_MOD dependent code */
844 struct target_core_fabric_ops *se_tpg_tfo;
845 struct se_wwn *se_tpg_wwn;
846 struct config_group tpg_group;
847 struct config_group *tpg_default_groups[6];
848 struct config_group tpg_lun_group;
849 struct config_group tpg_np_group;
850 struct config_group tpg_acl_group;
851 struct config_group tpg_attrib_group;
852 struct config_group tpg_param_group;
856 struct target_fabric_configfs *wwn_tf;
857 struct config_group wwn_group;
858 struct config_group *wwn_default_groups[2];
859 struct config_group fabric_stat_group;
862 #endif /* TARGET_CORE_BASE_H */