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 for target SCSI statistics
241 SCSI_AUTH_INTR_INDEX,
248 t10_alua_index_t alua_type;
249 /* ALUA Target Port Group ID */
250 u16 alua_tg_pt_gps_counter;
251 u32 alua_tg_pt_gps_count;
252 spinlock_t tg_pt_gps_lock;
253 struct se_device *t10_dev;
254 /* Used for default ALUA Target Port Group */
255 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
256 /* Used for default ALUA Target Port Group ConfigFS group */
257 struct config_group alua_tg_pt_gps_group;
258 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
259 struct list_head tg_pt_gps_list;
262 struct t10_alua_lu_gp {
266 atomic_t lu_gp_ref_cnt;
267 spinlock_t lu_gp_lock;
268 struct config_group lu_gp_group;
269 struct list_head lu_gp_node;
270 struct list_head lu_gp_mem_list;
273 struct t10_alua_lu_gp_member {
275 atomic_t lu_gp_mem_ref_cnt;
276 spinlock_t lu_gp_mem_lock;
277 struct t10_alua_lu_gp *lu_gp;
278 struct se_device *lu_gp_mem_dev;
279 struct list_head lu_gp_mem_list;
282 struct t10_alua_tg_pt_gp {
284 int tg_pt_gp_valid_id;
285 int tg_pt_gp_alua_access_status;
286 int tg_pt_gp_alua_access_type;
287 int tg_pt_gp_nonop_delay_msecs;
288 int tg_pt_gp_trans_delay_msecs;
289 int tg_pt_gp_implict_trans_secs;
291 int tg_pt_gp_write_metadata;
292 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
293 #define ALUA_MD_BUF_LEN 1024
294 u32 tg_pt_gp_md_buf_len;
295 u32 tg_pt_gp_members;
296 atomic_t tg_pt_gp_alua_access_state;
297 atomic_t tg_pt_gp_ref_cnt;
298 spinlock_t tg_pt_gp_lock;
299 struct mutex tg_pt_gp_md_mutex;
300 struct se_device *tg_pt_gp_dev;
301 struct config_group tg_pt_gp_group;
302 struct list_head tg_pt_gp_list;
303 struct list_head tg_pt_gp_mem_list;
306 struct t10_alua_tg_pt_gp_member {
308 atomic_t tg_pt_gp_mem_ref_cnt;
309 spinlock_t tg_pt_gp_mem_lock;
310 struct t10_alua_tg_pt_gp *tg_pt_gp;
311 struct se_port *tg_pt;
312 struct list_head tg_pt_gp_mem_list;
316 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
317 int protocol_identifier_set;
318 u32 protocol_identifier;
319 u32 device_identifier_code_set;
321 u32 device_identifier_type;
322 struct list_head vpd_list;
329 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
330 spinlock_t t10_vpd_lock;
331 struct se_device *t10_dev;
332 struct config_group t10_wwn_group;
333 struct list_head t10_vpd_list;
338 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
339 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
345 SPC3_PERSISTENT_RESERVATIONS
346 } t10_reservations_index_t;
348 struct t10_pr_registration {
349 /* Used for fabrics that contain WWN+ISID */
350 #define PR_REG_ISID_LEN 16
351 /* PR_REG_ISID_LEN + ',i,0x' */
352 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
353 char pr_reg_isid[PR_REG_ISID_LEN];
354 /* Used during APTPL metadata reading */
355 #define PR_APTPL_MAX_IPORT_LEN 256
356 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
357 /* Used during APTPL metadata reading */
358 #define PR_APTPL_MAX_TPORT_LEN 256
359 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
360 /* For writing out live meta data */
361 unsigned char *pr_aptpl_buf;
364 /* Reservation effects all target ports */
365 int pr_reg_all_tg_pt;
366 /* Activate Persistence across Target Power Loss */
371 /* Used for fabric initiator WWPNs using a ISID */
372 bool isid_present_at_reg;
373 u32 pr_res_mapped_lun;
374 u32 pr_aptpl_target_lun;
375 u32 pr_res_generation;
378 atomic_t pr_res_holders;
379 struct se_node_acl *pr_reg_nacl;
380 struct se_dev_entry *pr_reg_deve;
381 struct se_lun *pr_reg_tg_pt_lun;
382 struct list_head pr_reg_list;
383 struct list_head pr_reg_abort_list;
384 struct list_head pr_reg_aptpl_list;
385 struct list_head pr_reg_atp_list;
386 struct list_head pr_reg_atp_mem_list;
390 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
391 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
392 * core_setup_reservations()
394 struct t10_reservation_ops {
395 int (*t10_reservation_check)(struct se_cmd *, u32 *);
396 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
397 int (*t10_pr_register)(struct se_cmd *);
398 int (*t10_pr_clear)(struct se_cmd *);
401 struct t10_reservation {
402 /* Reservation effects all target ports */
404 /* Activate Persistence across Target Power Loss enabled
407 /* Used by struct t10_reservation->pr_aptpl_buf_len */
408 #define PR_APTPL_BUF_LEN 8192
409 u32 pr_aptpl_buf_len;
411 t10_reservations_index_t res_type;
412 spinlock_t registration_lock;
413 spinlock_t aptpl_reg_lock;
415 * This will always be set by one individual I_T Nexus.
416 * However with all_tg_pt=1, other I_T Nexus from the
417 * same initiator can access PR reg/res info on a different
420 * There is also the 'All Registrants' case, where there is
421 * a single *pr_res_holder of the reservation, but all
422 * registrations are considered reservation holders.
424 struct se_node_acl *pr_res_holder;
425 struct list_head registration_list;
426 struct list_head aptpl_reg_list;
427 struct t10_reservation_ops pr_ops;
431 /* Task Management function to be performed */
433 /* Task Management response to send */
436 /* Reference to ITT that Task Mgmt should be performed */
438 void *fabric_tmr_ptr;
439 struct se_cmd *task_cmd;
440 struct se_device *tmr_dev;
441 struct se_lun *tmr_lun;
442 struct list_head tmr_list;
446 /* SAM response code being sent to initiator */
450 u8 scsi_sense_reason;
451 u16 scsi_sense_length;
452 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
453 int alua_nonop_delay;
454 /* See include/linux/dma-mapping.h */
455 enum dma_data_direction data_direction;
456 /* For SAM Task Attribute */
458 /* Transport protocol dependent state, see transport_state_table */
459 enum transport_state_table t_state;
460 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
461 unsigned check_release:1;
462 unsigned cmd_wait_set:1;
463 unsigned unknown_data_length:1;
464 /* See se_cmd_flags_table */
467 /* Total size in bytes associated with command */
471 /* Persistent Reservation key */
473 /* Used for sense data */
475 struct list_head se_delayed_node;
476 struct list_head se_lun_node;
477 struct list_head se_qf_node;
478 struct se_device *se_dev;
479 struct se_dev_entry *se_deve;
480 struct se_lun *se_lun;
481 /* Only used for internal passthrough and legacy TCM fabric modules */
482 struct se_session *se_sess;
483 struct se_tmr_req *se_tmr_req;
484 struct list_head se_cmd_list;
485 struct completion cmd_wait_comp;
486 struct kref cmd_kref;
487 struct target_core_fabric_ops *se_tfo;
488 int (*execute_cmd)(struct se_cmd *);
489 void (*transport_complete_callback)(struct se_cmd *);
491 unsigned char *t_task_cdb;
492 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
493 unsigned long long t_task_lba;
495 unsigned int transport_state;
496 #define CMD_T_ABORTED (1 << 0)
497 #define CMD_T_ACTIVE (1 << 1)
498 #define CMD_T_COMPLETE (1 << 2)
499 #define CMD_T_QUEUED (1 << 3)
500 #define CMD_T_SENT (1 << 4)
501 #define CMD_T_STOP (1 << 5)
502 #define CMD_T_FAILED (1 << 6)
503 #define CMD_T_LUN_STOP (1 << 7)
504 #define CMD_T_LUN_FE_STOP (1 << 8)
505 #define CMD_T_DEV_ACTIVE (1 << 9)
506 #define CMD_T_REQUEST_STOP (1 << 10)
507 #define CMD_T_BUSY (1 << 11)
508 spinlock_t t_state_lock;
509 struct completion t_transport_stop_comp;
510 struct completion transport_lun_fe_stop_comp;
511 struct completion transport_lun_stop_comp;
513 struct work_struct work;
515 struct scatterlist *t_data_sg;
516 unsigned int t_data_nents;
518 struct scatterlist *t_bidi_data_sg;
519 unsigned int t_bidi_data_nents;
521 struct list_head state_list;
524 /* old task stop completion, consider merging with some of the above */
525 struct completion task_stop_comp;
527 /* backend private data */
534 struct se_node_acl *ua_nacl;
535 struct list_head ua_dev_list;
536 struct list_head ua_nacl_list;
540 char initiatorname[TRANSPORT_IQN_LEN];
541 /* Used to signal demo mode created ACL, disabled by default */
542 bool dynamic_node_acl;
549 spinlock_t stats_lock;
550 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
551 atomic_t acl_pr_ref_count;
552 struct se_dev_entry **device_list;
553 struct se_session *nacl_sess;
554 struct se_portal_group *se_tpg;
555 spinlock_t device_list_lock;
556 spinlock_t nacl_sess_lock;
557 struct config_group acl_group;
558 struct config_group acl_attrib_group;
559 struct config_group acl_auth_group;
560 struct config_group acl_param_group;
561 struct config_group acl_fabric_stat_group;
562 struct config_group *acl_default_groups[5];
563 struct list_head acl_list;
564 struct list_head acl_sess_list;
565 struct completion acl_free_comp;
566 struct kref acl_kref;
570 unsigned sess_tearing_down:1;
572 struct se_node_acl *se_node_acl;
573 struct se_portal_group *se_tpg;
574 void *fabric_sess_ptr;
575 struct list_head sess_list;
576 struct list_head sess_acl_list;
577 struct list_head sess_cmd_list;
578 spinlock_t sess_cmd_lock;
579 struct kref sess_kref;
583 struct se_transform_info;
586 struct se_ml_stat_grps {
587 struct config_group stat_group;
588 struct config_group scsi_auth_intr_group;
589 struct config_group scsi_att_intr_port_group;
593 char initiatorname[TRANSPORT_IQN_LEN];
595 struct se_node_acl *se_lun_nacl;
596 struct se_lun *se_lun;
597 struct list_head lacl_list;
598 struct config_group se_lun_group;
599 struct se_ml_stat_grps ml_stat_grps;
602 struct se_dev_entry {
603 bool def_pr_registered;
604 /* See transport_lunflags_table */
618 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
619 atomic_t pr_ref_count;
620 struct se_lun_acl *se_lun_acl;
622 struct se_lun *se_lun;
623 struct list_head alua_port_list;
624 struct list_head ua_list;
627 struct se_dev_attrib {
629 int emulate_fua_write;
630 int emulate_fua_read;
631 int emulate_write_cache;
632 int emulate_ua_intlck_ctrl;
636 int emulate_reservations;
638 int enforce_pr_isids;
640 int emulate_rest_reord;
644 u32 fabric_max_sectors;
648 u32 max_unmap_lba_count;
649 u32 max_unmap_block_desc_count;
650 u32 unmap_granularity;
651 u32 unmap_granularity_alignment;
652 struct se_device *da_dev;
653 struct config_group da_group;
656 struct se_dev_stat_grps {
657 struct config_group stat_group;
658 struct config_group scsi_dev_group;
659 struct config_group scsi_tgt_dev_group;
660 struct config_group scsi_lu_group;
664 /* RELATIVE TARGET PORT IDENTIFER Counter */
665 u16 dev_rpti_counter;
666 /* Used for SAM Task Attribute ordering */
667 u32 dev_cur_ordered_id;
669 #define DF_CONFIGURED 0x00000001
670 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
671 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
672 #define DF_USING_UDEV_PATH 0x00000008
673 #define DF_USING_ALIAS 0x00000010
675 /* Physical device queue depth */
677 /* Used for SPC-2 reservations enforce of ISIDs */
678 u64 dev_res_bin_isid;
679 /* Pointer to transport specific device structure */
686 spinlock_t stats_lock;
687 /* Active commands on this virtual SE device */
688 atomic_t simple_cmds;
689 atomic_t dev_ordered_id;
690 atomic_t dev_ordered_sync;
691 atomic_t dev_qf_count;
693 spinlock_t delayed_cmd_lock;
694 spinlock_t execute_task_lock;
695 spinlock_t dev_reservation_lock;
696 unsigned int dev_reservation_flags;
697 #define DRF_SPC2_RESERVATIONS 0x00000001
698 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
699 spinlock_t se_port_lock;
700 spinlock_t se_tmr_lock;
701 spinlock_t qf_cmd_lock;
702 /* Used for legacy SPC-2 reservationsa */
703 struct se_node_acl *dev_reserved_node_acl;
704 /* Used for ALUA Logical Unit Group membership */
705 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
706 /* Used for SPC-3 Persistent Reservations */
707 struct t10_pr_registration *dev_pr_res_holder;
708 struct list_head dev_sep_list;
709 struct list_head dev_tmr_list;
710 struct workqueue_struct *tmr_wq;
711 struct work_struct qf_work_queue;
712 struct list_head delayed_cmd_list;
713 struct list_head state_list;
714 struct list_head qf_cmd_list;
715 /* Pointer to associated SE HBA */
716 struct se_hba *se_hba;
717 /* T10 Inquiry and VPD WWN Information */
718 struct t10_wwn t10_wwn;
719 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
720 struct t10_alua t10_alua;
721 /* T10 SPC-2 + SPC-3 Reservations */
722 struct t10_reservation t10_pr;
723 struct se_dev_attrib dev_attrib;
724 struct config_group dev_group;
725 struct config_group dev_pr_group;
726 struct se_dev_stat_grps dev_stat_grps;
727 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
728 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
729 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
730 unsigned char udev_path[SE_UDEV_PATH_LEN];
731 /* Pointer to template of function pointers for transport */
732 struct se_subsystem_api *transport;
733 /* Linked list for struct se_hba struct se_device list */
734 struct list_head dev_list;
740 /* See hba_flags_table */
742 /* Virtual iSCSI devices attached. */
745 /* Pointer to transport specific host structure. */
747 struct list_head hba_node;
748 spinlock_t device_lock;
749 struct config_group hba_group;
750 struct mutex hba_access_mutex;
751 struct se_subsystem_api *transport;
754 struct se_port_stat_grps {
755 struct config_group stat_group;
756 struct config_group scsi_port_group;
757 struct config_group scsi_tgt_port_group;
758 struct config_group scsi_transport_group;
762 /* See transport_lun_status_table */
763 enum transport_lun_status_table lun_status;
767 atomic_t lun_acl_count;
768 spinlock_t lun_acl_lock;
769 spinlock_t lun_cmd_lock;
770 spinlock_t lun_sep_lock;
771 struct completion lun_shutdown_comp;
772 struct list_head lun_cmd_list;
773 struct list_head lun_acl_list;
774 struct se_device *lun_se_dev;
775 struct se_port *lun_sep;
776 struct config_group lun_group;
777 struct se_port_stat_grps port_stat_grps;
780 struct scsi_port_stats {
787 /* RELATIVE TARGET PORT IDENTIFER */
789 int sep_tg_pt_secondary_stat;
790 int sep_tg_pt_secondary_write_md;
792 struct scsi_port_stats sep_stats;
793 /* Used for ALUA Target Port Groups membership */
794 atomic_t sep_tg_pt_secondary_offline;
795 /* Used for PR ALL_TG_PT=1 */
796 atomic_t sep_tg_pt_ref_cnt;
797 spinlock_t sep_alua_lock;
798 struct mutex sep_tg_pt_md_mutex;
799 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
800 struct se_lun *sep_lun;
801 struct se_portal_group *sep_tpg;
802 struct list_head sep_alua_list;
803 struct list_head sep_list;
807 struct se_portal_group *tpg_np_parent;
808 struct config_group tpg_np_group;
811 struct se_portal_group {
812 /* Type of target portal group, see transport_tpg_type_table */
813 enum transport_tpg_type_table se_tpg_type;
814 /* Number of ACLed Initiator Nodes for this TPG */
816 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
817 atomic_t tpg_pr_ref_count;
818 /* Spinlock for adding/removing ACLed Nodes */
819 spinlock_t acl_node_lock;
820 /* Spinlock for adding/removing sessions */
821 spinlock_t session_lock;
822 spinlock_t tpg_lun_lock;
823 /* Pointer to $FABRIC_MOD portal group */
824 void *se_tpg_fabric_ptr;
825 struct list_head se_tpg_node;
826 /* linked list for initiator ACL list */
827 struct list_head acl_node_list;
828 struct se_lun **tpg_lun_list;
829 struct se_lun tpg_virt_lun0;
830 /* List of TCM sessions associated wth this TPG */
831 struct list_head tpg_sess_list;
832 /* Pointer to $FABRIC_MOD dependent code */
833 struct target_core_fabric_ops *se_tpg_tfo;
834 struct se_wwn *se_tpg_wwn;
835 struct config_group tpg_group;
836 struct config_group *tpg_default_groups[6];
837 struct config_group tpg_lun_group;
838 struct config_group tpg_np_group;
839 struct config_group tpg_acl_group;
840 struct config_group tpg_attrib_group;
841 struct config_group tpg_param_group;
845 struct target_fabric_configfs *wwn_tf;
846 struct config_group wwn_group;
847 struct config_group *wwn_default_groups[2];
848 struct config_group fabric_stat_group;
851 #endif /* TARGET_CORE_BASE_H */