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 <linux/percpu_ida.h>
9 #include <scsi/scsi_cmnd.h>
13 #define TARGET_CORE_MOD_VERSION "v4.1.0"
14 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
16 /* Maximum Number of LUNs per Target Portal Group */
17 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
18 #define TRANSPORT_MAX_LUNS_PER_TPG 256
20 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
22 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
23 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
24 * 16-byte CDBs by default and require an extra allocation for
25 * 32-byte CDBs to because of legacy issues.
27 * Within TCM Core there are no such legacy limitiations, so we go ahead
28 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
29 * within all TCM Core and subsystem plugin code.
31 #define TCM_MAX_COMMAND_SIZE 32
33 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
34 * defined 96, but the real limit is 252 (or 260 including the header)
36 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
37 /* Used by transport_send_check_condition_and_sense() */
38 #define SPC_SENSE_KEY_OFFSET 2
39 #define SPC_ADD_SENSE_LEN_OFFSET 7
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 254
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 /* Attempts before moving from SHORT to LONG */
60 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
61 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
62 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
64 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
66 /* struct se_dev_attrib sanity values */
67 /* Default max_unmap_lba_count */
68 #define DA_MAX_UNMAP_LBA_COUNT 0
69 /* Default max_unmap_block_desc_count */
70 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
71 /* Default unmap_granularity */
72 #define DA_UNMAP_GRANULARITY_DEFAULT 0
73 /* Default unmap_granularity_alignment */
74 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
75 /* Default max_write_same_len, disabled by default */
76 #define DA_MAX_WRITE_SAME_LEN 0
77 /* Default max transfer length */
78 #define DA_FABRIC_MAX_SECTORS 8192
79 /* Use a model alias based on the configfs backend device name */
80 #define DA_EMULATE_MODEL_ALIAS 0
81 /* Emulation for Direct Page Out */
82 #define DA_EMULATE_DPO 0
83 /* Emulation for Forced Unit Access WRITEs */
84 #define DA_EMULATE_FUA_WRITE 1
85 /* Emulation for Forced Unit Access READs */
86 #define DA_EMULATE_FUA_READ 0
87 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
88 #define DA_EMULATE_WRITE_CACHE 0
89 /* Emulation for UNIT ATTENTION Interlock Control */
90 #define DA_EMULATE_UA_INTLLCK_CTRL 0
91 /* Emulation for TASK_ABORTED status (TAS) by default */
92 #define DA_EMULATE_TAS 1
93 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
94 #define DA_EMULATE_TPU 0
96 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
97 * block/blk-lib.c:blkdev_issue_discard()
99 #define DA_EMULATE_TPWS 0
100 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
101 #define DA_EMULATE_CAW 1
102 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
103 #define DA_EMULATE_3PC 1
104 /* No Emulation for PSCSI by default */
105 #define DA_EMULATE_ALUA 0
106 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
107 #define DA_ENFORCE_PR_ISIDS 1
108 #define DA_STATUS_MAX_SECTORS_MIN 16
109 #define DA_STATUS_MAX_SECTORS_MAX 8192
110 /* By default don't report non-rotating (solid state) medium */
111 #define DA_IS_NONROT 0
112 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
113 #define DA_EMULATE_REST_REORD 0
115 #define SE_INQUIRY_BUF 1024
116 #define SE_MODE_PAGE_BUF 512
117 #define SE_SENSE_BUF 96
119 /* struct se_hba->hba_flags */
120 enum hba_flags_table {
121 HBA_FLAGS_INTERNAL_USE = 0x01,
122 HBA_FLAGS_PSCSI_MODE = 0x02,
125 /* struct se_lun->lun_status */
126 enum transport_lun_status_table {
127 TRANSPORT_LUN_STATUS_FREE = 0,
128 TRANSPORT_LUN_STATUS_ACTIVE = 1,
131 /* struct se_portal_group->se_tpg_type */
132 enum transport_tpg_type_table {
133 TRANSPORT_TPG_TYPE_NORMAL = 0,
134 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
137 /* Special transport agnostic struct se_cmd->t_states */
138 enum transport_state_table {
139 TRANSPORT_NO_STATE = 0,
140 TRANSPORT_NEW_CMD = 1,
141 TRANSPORT_WRITE_PENDING = 3,
142 TRANSPORT_PROCESSING = 5,
143 TRANSPORT_COMPLETE = 6,
144 TRANSPORT_ISTATE_PROCESSING = 11,
145 TRANSPORT_COMPLETE_QF_WP = 18,
146 TRANSPORT_COMPLETE_QF_OK = 19,
149 /* Used for struct se_cmd->se_cmd_flags */
150 enum se_cmd_flags_table {
151 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
152 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
153 SCF_EMULATED_TASK_SENSE = 0x00000004,
154 SCF_SCSI_DATA_CDB = 0x00000008,
155 SCF_SCSI_TMR_CDB = 0x00000010,
156 SCF_FUA = 0x00000080,
157 SCF_SE_LUN_CMD = 0x00000100,
158 SCF_BIDI = 0x00000400,
159 SCF_SENT_CHECK_CONDITION = 0x00000800,
160 SCF_OVERFLOW_BIT = 0x00001000,
161 SCF_UNDERFLOW_BIT = 0x00002000,
162 SCF_SENT_DELAYED_TAS = 0x00004000,
163 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
164 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
165 SCF_ACK_KREF = 0x00040000,
166 SCF_COMPARE_AND_WRITE = 0x00080000,
167 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
168 SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
171 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
172 enum transport_lunflags_table {
173 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
174 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
175 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
176 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
180 * Used by transport_send_check_condition_and_sense()
181 * to signal which ASC/ASCQ sense payload should be built.
183 typedef unsigned __bitwise__ sense_reason_t;
185 enum tcm_sense_reason_table {
186 #define R(x) (__force sense_reason_t )(x)
187 TCM_NO_SENSE = R(0x00),
188 TCM_NON_EXISTENT_LUN = R(0x01),
189 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
190 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
191 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
192 TCM_SERVICE_CRC_ERROR = R(0x05),
193 TCM_SNACK_REJECTED = R(0x06),
194 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
195 TCM_INVALID_CDB_FIELD = R(0x08),
196 TCM_INVALID_PARAMETER_LIST = R(0x09),
197 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
198 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
199 TCM_WRITE_PROTECTED = R(0x0c),
200 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
201 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
202 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
203 TCM_RESERVATION_CONFLICT = R(0x10),
204 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
205 TCM_OUT_OF_RESOURCES = R(0x12),
206 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
207 TCM_MISCOMPARE_VERIFY = R(0x14),
211 enum target_sc_flags_table {
212 TARGET_SCF_BIDI_OP = 0x01,
213 TARGET_SCF_ACK_KREF = 0x02,
214 TARGET_SCF_UNKNOWN_SIZE = 0x04,
217 /* fabric independent task management function values */
218 enum tcm_tmreq_table {
220 TMR_ABORT_TASK_SET = 2,
222 TMR_CLEAR_TASK_SET = 4,
224 TMR_TARGET_WARM_RESET = 6,
225 TMR_TARGET_COLD_RESET = 7,
228 /* fabric independent task management response values */
229 enum tcm_tmrsp_table {
230 TMR_FUNCTION_FAILED = 0,
231 TMR_FUNCTION_COMPLETE = 1,
232 TMR_TASK_DOES_NOT_EXIST = 2,
233 TMR_LUN_DOES_NOT_EXIST = 3,
234 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
235 TMR_FUNCTION_REJECTED = 5,
239 * Used for target SCSI statistics
244 SCSI_AUTH_INTR_INDEX,
250 struct t10_alua_lba_map_member {
251 struct list_head lba_map_mem_list;
252 int lba_map_mem_alua_state;
253 int lba_map_mem_alua_pg_id;
256 struct t10_alua_lba_map {
257 u64 lba_map_first_lba;
258 u64 lba_map_last_lba;
259 struct list_head lba_map_list;
260 struct list_head lba_map_mem_list;
264 /* ALUA Target Port Group ID */
265 u16 alua_tg_pt_gps_counter;
266 u32 alua_tg_pt_gps_count;
267 /* Referrals support */
268 spinlock_t lba_map_lock;
269 u32 lba_map_segment_size;
270 u32 lba_map_segment_multiplier;
271 struct list_head lba_map_list;
272 spinlock_t tg_pt_gps_lock;
273 struct se_device *t10_dev;
274 /* Used for default ALUA Target Port Group */
275 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
276 /* Used for default ALUA Target Port Group ConfigFS group */
277 struct config_group alua_tg_pt_gps_group;
278 struct list_head tg_pt_gps_list;
281 struct t10_alua_lu_gp {
285 atomic_t lu_gp_ref_cnt;
286 spinlock_t lu_gp_lock;
287 struct config_group lu_gp_group;
288 struct list_head lu_gp_node;
289 struct list_head lu_gp_mem_list;
292 struct t10_alua_lu_gp_member {
294 atomic_t lu_gp_mem_ref_cnt;
295 spinlock_t lu_gp_mem_lock;
296 struct t10_alua_lu_gp *lu_gp;
297 struct se_device *lu_gp_mem_dev;
298 struct list_head lu_gp_mem_list;
301 struct t10_alua_tg_pt_gp {
303 int tg_pt_gp_valid_id;
304 int tg_pt_gp_alua_supported_states;
305 int tg_pt_gp_alua_pending_state;
306 int tg_pt_gp_alua_previous_state;
307 int tg_pt_gp_alua_access_status;
308 int tg_pt_gp_alua_access_type;
309 int tg_pt_gp_nonop_delay_msecs;
310 int tg_pt_gp_trans_delay_msecs;
311 int tg_pt_gp_implicit_trans_secs;
313 int tg_pt_gp_write_metadata;
314 u32 tg_pt_gp_members;
315 atomic_t tg_pt_gp_alua_access_state;
316 atomic_t tg_pt_gp_ref_cnt;
317 spinlock_t tg_pt_gp_lock;
318 struct mutex tg_pt_gp_md_mutex;
319 struct se_device *tg_pt_gp_dev;
320 struct config_group tg_pt_gp_group;
321 struct list_head tg_pt_gp_list;
322 struct list_head tg_pt_gp_mem_list;
323 struct se_port *tg_pt_gp_alua_port;
324 struct se_node_acl *tg_pt_gp_alua_nacl;
325 struct delayed_work tg_pt_gp_transition_work;
326 struct completion *tg_pt_gp_transition_complete;
329 struct t10_alua_tg_pt_gp_member {
331 atomic_t tg_pt_gp_mem_ref_cnt;
332 spinlock_t tg_pt_gp_mem_lock;
333 struct t10_alua_tg_pt_gp *tg_pt_gp;
334 struct se_port *tg_pt;
335 struct list_head tg_pt_gp_mem_list;
339 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
340 int protocol_identifier_set;
341 u32 protocol_identifier;
342 u32 device_identifier_code_set;
344 u32 device_identifier_type;
345 struct list_head vpd_list;
352 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
353 spinlock_t t10_vpd_lock;
354 struct se_device *t10_dev;
355 struct config_group t10_wwn_group;
356 struct list_head t10_vpd_list;
359 struct t10_pr_registration {
360 /* Used for fabrics that contain WWN+ISID */
361 #define PR_REG_ISID_LEN 16
362 /* PR_REG_ISID_LEN + ',i,0x' */
363 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
364 char pr_reg_isid[PR_REG_ISID_LEN];
365 /* Used during APTPL metadata reading */
366 #define PR_APTPL_MAX_IPORT_LEN 256
367 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
368 /* Used during APTPL metadata reading */
369 #define PR_APTPL_MAX_TPORT_LEN 256
370 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
373 /* Reservation effects all target ports */
374 int pr_reg_all_tg_pt;
375 /* Activate Persistence across Target Power Loss */
380 /* Used for fabric initiator WWPNs using a ISID */
381 bool isid_present_at_reg;
382 u32 pr_res_mapped_lun;
383 u32 pr_aptpl_target_lun;
384 u32 pr_res_generation;
387 atomic_t pr_res_holders;
388 struct se_node_acl *pr_reg_nacl;
389 struct se_dev_entry *pr_reg_deve;
390 struct se_lun *pr_reg_tg_pt_lun;
391 struct list_head pr_reg_list;
392 struct list_head pr_reg_abort_list;
393 struct list_head pr_reg_aptpl_list;
394 struct list_head pr_reg_atp_list;
395 struct list_head pr_reg_atp_mem_list;
398 struct t10_reservation {
399 /* Reservation effects all target ports */
401 /* Activate Persistence across Target Power Loss enabled
404 #define PR_APTPL_BUF_LEN 8192
406 spinlock_t registration_lock;
407 spinlock_t aptpl_reg_lock;
409 * This will always be set by one individual I_T Nexus.
410 * However with all_tg_pt=1, other I_T Nexus from the
411 * same initiator can access PR reg/res info on a different
414 * There is also the 'All Registrants' case, where there is
415 * a single *pr_res_holder of the reservation, but all
416 * registrations are considered reservation holders.
418 struct se_node_acl *pr_res_holder;
419 struct list_head registration_list;
420 struct list_head aptpl_reg_list;
424 /* Task Management function to be performed */
426 /* Task Management response to send */
429 /* Reference to ITT that Task Mgmt should be performed */
431 void *fabric_tmr_ptr;
432 struct se_cmd *task_cmd;
433 struct se_device *tmr_dev;
434 struct se_lun *tmr_lun;
435 struct list_head tmr_list;
439 /* SAM response code being sent to initiator */
443 u16 scsi_sense_length;
444 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
445 int alua_nonop_delay;
446 /* See include/linux/dma-mapping.h */
447 enum dma_data_direction data_direction;
448 /* For SAM Task Attribute */
450 /* Used for se_sess->sess_tag_pool */
451 unsigned int map_tag;
452 /* Transport protocol dependent state, see transport_state_table */
453 enum transport_state_table t_state;
454 unsigned cmd_wait_set:1;
455 unsigned unknown_data_length:1;
456 /* See se_cmd_flags_table */
459 /* Total size in bytes associated with command */
463 /* Persistent Reservation key */
465 /* Used for sense data */
467 struct list_head se_delayed_node;
468 struct list_head se_qf_node;
469 struct se_device *se_dev;
470 struct se_dev_entry *se_deve;
471 struct se_lun *se_lun;
472 /* Only used for internal passthrough and legacy TCM fabric modules */
473 struct se_session *se_sess;
474 struct se_tmr_req *se_tmr_req;
475 struct list_head se_cmd_list;
476 struct completion cmd_wait_comp;
477 struct kref cmd_kref;
478 struct target_core_fabric_ops *se_tfo;
479 sense_reason_t (*execute_cmd)(struct se_cmd *);
480 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
481 u32, enum dma_data_direction);
482 sense_reason_t (*transport_complete_callback)(struct se_cmd *);
484 unsigned char *t_task_cdb;
485 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
486 unsigned long long t_task_lba;
487 unsigned int t_task_nolb;
488 unsigned int transport_state;
489 #define CMD_T_ABORTED (1 << 0)
490 #define CMD_T_ACTIVE (1 << 1)
491 #define CMD_T_COMPLETE (1 << 2)
492 #define CMD_T_SENT (1 << 4)
493 #define CMD_T_STOP (1 << 5)
494 #define CMD_T_FAILED (1 << 6)
495 #define CMD_T_DEV_ACTIVE (1 << 7)
496 #define CMD_T_REQUEST_STOP (1 << 8)
497 #define CMD_T_BUSY (1 << 9)
498 spinlock_t t_state_lock;
499 struct completion t_transport_stop_comp;
501 struct work_struct work;
503 struct scatterlist *t_data_sg;
504 struct scatterlist *t_data_sg_orig;
505 unsigned int t_data_nents;
506 unsigned int t_data_nents_orig;
508 struct scatterlist *t_bidi_data_sg;
509 unsigned int t_bidi_data_nents;
511 struct list_head state_list;
514 /* old task stop completion, consider merging with some of the above */
515 struct completion task_stop_comp;
517 /* backend private data */
520 /* Used for lun->lun_ref counting */
527 struct se_node_acl *ua_nacl;
528 struct list_head ua_nacl_list;
532 char initiatorname[TRANSPORT_IQN_LEN];
533 /* Used to signal demo mode created ACL, disabled by default */
534 bool dynamic_node_acl;
538 #define MAX_ACL_TAG_SIZE 64
539 char acl_tag[MAX_ACL_TAG_SIZE];
543 spinlock_t stats_lock;
544 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
545 atomic_t acl_pr_ref_count;
546 struct se_dev_entry **device_list;
547 struct se_session *nacl_sess;
548 struct se_portal_group *se_tpg;
549 spinlock_t device_list_lock;
550 spinlock_t nacl_sess_lock;
551 struct config_group acl_group;
552 struct config_group acl_attrib_group;
553 struct config_group acl_auth_group;
554 struct config_group acl_param_group;
555 struct config_group acl_fabric_stat_group;
556 struct config_group *acl_default_groups[5];
557 struct list_head acl_list;
558 struct list_head acl_sess_list;
559 struct completion acl_free_comp;
560 struct kref acl_kref;
564 unsigned sess_tearing_down:1;
566 struct se_node_acl *se_node_acl;
567 struct se_portal_group *se_tpg;
568 void *fabric_sess_ptr;
569 struct list_head sess_list;
570 struct list_head sess_acl_list;
571 struct list_head sess_cmd_list;
572 struct list_head sess_wait_list;
573 spinlock_t sess_cmd_lock;
574 struct kref sess_kref;
576 struct percpu_ida sess_tag_pool;
580 struct se_transform_info;
583 struct se_ml_stat_grps {
584 struct config_group stat_group;
585 struct config_group scsi_auth_intr_group;
586 struct config_group scsi_att_intr_port_group;
590 char initiatorname[TRANSPORT_IQN_LEN];
592 struct se_node_acl *se_lun_nacl;
593 struct se_lun *se_lun;
594 struct list_head lacl_list;
595 struct config_group se_lun_group;
596 struct se_ml_stat_grps ml_stat_grps;
599 struct se_dev_entry {
600 bool def_pr_registered;
601 /* See transport_lunflags_table */
611 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
612 atomic_t pr_ref_count;
613 struct se_lun_acl *se_lun_acl;
615 struct se_lun *se_lun;
616 struct list_head alua_port_list;
617 struct list_head ua_list;
620 struct se_dev_attrib {
621 int emulate_model_alias;
623 int emulate_fua_write;
624 int emulate_fua_read;
625 int emulate_write_cache;
626 int emulate_ua_intlck_ctrl;
632 int enforce_pr_isids;
634 int emulate_rest_reord;
638 u32 fabric_max_sectors;
642 u32 max_unmap_lba_count;
643 u32 max_unmap_block_desc_count;
644 u32 unmap_granularity;
645 u32 unmap_granularity_alignment;
646 u32 max_write_same_len;
647 struct se_device *da_dev;
648 struct config_group da_group;
651 struct se_port_stat_grps {
652 struct config_group stat_group;
653 struct config_group scsi_port_group;
654 struct config_group scsi_tgt_port_group;
655 struct config_group scsi_transport_group;
659 #define SE_LUN_LINK_MAGIC 0xffff7771
661 /* See transport_lun_status_table */
662 enum transport_lun_status_table lun_status;
666 atomic_t lun_acl_count;
667 spinlock_t lun_acl_lock;
668 spinlock_t lun_sep_lock;
669 struct completion lun_shutdown_comp;
670 struct list_head lun_acl_list;
671 struct se_device *lun_se_dev;
672 struct se_port *lun_sep;
673 struct config_group lun_group;
674 struct se_port_stat_grps port_stat_grps;
675 struct completion lun_ref_comp;
676 struct percpu_ref lun_ref;
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;
687 #define SE_DEV_LINK_MAGIC 0xfeeddeef
689 /* RELATIVE TARGET PORT IDENTIFER Counter */
690 u16 dev_rpti_counter;
691 /* Used for SAM Task Attribute ordering */
692 u32 dev_cur_ordered_id;
694 #define DF_CONFIGURED 0x00000001
695 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
696 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
697 #define DF_USING_UDEV_PATH 0x00000008
698 #define DF_USING_ALIAS 0x00000010
700 /* Physical device queue depth */
702 /* Used for SPC-2 reservations enforce of ISIDs */
703 u64 dev_res_bin_isid;
704 /* Pointer to transport specific device structure */
707 atomic_long_t num_resets;
708 atomic_long_t num_cmds;
709 atomic_long_t read_bytes;
710 atomic_long_t write_bytes;
711 /* Active commands on this virtual SE device */
712 atomic_t simple_cmds;
713 atomic_t dev_ordered_id;
714 atomic_t dev_ordered_sync;
715 atomic_t dev_qf_count;
717 spinlock_t delayed_cmd_lock;
718 spinlock_t execute_task_lock;
719 spinlock_t dev_reservation_lock;
720 unsigned int dev_reservation_flags;
721 #define DRF_SPC2_RESERVATIONS 0x00000001
722 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
723 spinlock_t se_port_lock;
724 spinlock_t se_tmr_lock;
725 spinlock_t qf_cmd_lock;
726 struct semaphore caw_sem;
727 /* Used for legacy SPC-2 reservationsa */
728 struct se_node_acl *dev_reserved_node_acl;
729 /* Used for ALUA Logical Unit Group membership */
730 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
731 /* Used for SPC-3 Persistent Reservations */
732 struct t10_pr_registration *dev_pr_res_holder;
733 struct list_head dev_sep_list;
734 struct list_head dev_tmr_list;
735 struct workqueue_struct *tmr_wq;
736 struct work_struct qf_work_queue;
737 struct list_head delayed_cmd_list;
738 struct list_head state_list;
739 struct list_head qf_cmd_list;
740 struct list_head g_dev_node;
741 /* Pointer to associated SE HBA */
742 struct se_hba *se_hba;
743 /* T10 Inquiry and VPD WWN Information */
744 struct t10_wwn t10_wwn;
745 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
746 struct t10_alua t10_alua;
747 /* T10 SPC-2 + SPC-3 Reservations */
748 struct t10_reservation t10_pr;
749 struct se_dev_attrib dev_attrib;
750 struct config_group dev_group;
751 struct config_group dev_pr_group;
752 struct se_dev_stat_grps dev_stat_grps;
753 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
754 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
755 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
756 unsigned char udev_path[SE_UDEV_PATH_LEN];
757 /* Pointer to template of function pointers for transport */
758 struct se_subsystem_api *transport;
759 /* Linked list for struct se_hba struct se_device list */
760 struct list_head dev_list;
761 struct se_lun xcopy_lun;
767 /* See hba_flags_table */
769 /* Virtual iSCSI devices attached. */
772 /* Pointer to transport specific host structure. */
774 struct list_head hba_node;
775 spinlock_t device_lock;
776 struct config_group hba_group;
777 struct mutex hba_access_mutex;
778 struct se_subsystem_api *transport;
781 struct scsi_port_stats {
788 /* RELATIVE TARGET PORT IDENTIFER */
790 int sep_tg_pt_secondary_stat;
791 int sep_tg_pt_secondary_write_md;
793 struct scsi_port_stats sep_stats;
794 /* Used for ALUA Target Port Groups membership */
795 atomic_t sep_tg_pt_secondary_offline;
796 /* Used for PR ALL_TG_PT=1 */
797 atomic_t sep_tg_pt_ref_cnt;
798 spinlock_t sep_alua_lock;
799 struct mutex sep_tg_pt_md_mutex;
800 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
801 struct se_lun *sep_lun;
802 struct se_portal_group *sep_tpg;
803 struct list_head sep_alua_list;
804 struct list_head sep_list;
808 struct se_portal_group *tpg_np_parent;
809 struct config_group tpg_np_group;
812 struct se_portal_group {
813 /* Type of target portal group, see transport_tpg_type_table */
814 enum transport_tpg_type_table se_tpg_type;
815 /* Number of ACLed Initiator Nodes for this TPG */
817 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
818 atomic_t tpg_pr_ref_count;
819 /* Spinlock for adding/removing ACLed Nodes */
820 spinlock_t acl_node_lock;
821 /* Spinlock for adding/removing sessions */
822 spinlock_t session_lock;
823 spinlock_t tpg_lun_lock;
824 /* Pointer to $FABRIC_MOD portal group */
825 void *se_tpg_fabric_ptr;
826 struct list_head se_tpg_node;
827 /* linked list for initiator ACL list */
828 struct list_head acl_node_list;
829 struct se_lun **tpg_lun_list;
830 struct se_lun tpg_virt_lun0;
831 /* List of TCM sessions associated wth this TPG */
832 struct list_head tpg_sess_list;
833 /* Pointer to $FABRIC_MOD dependent code */
834 struct target_core_fabric_ops *se_tpg_tfo;
835 struct se_wwn *se_tpg_wwn;
836 struct config_group tpg_group;
837 struct config_group *tpg_default_groups[7];
838 struct config_group tpg_lun_group;
839 struct config_group tpg_np_group;
840 struct config_group tpg_acl_group;
841 struct config_group tpg_attrib_group;
842 struct config_group tpg_auth_group;
843 struct config_group tpg_param_group;
847 struct target_fabric_configfs *wwn_tf;
848 struct config_group wwn_group;
849 struct config_group *wwn_default_groups[2];
850 struct config_group fabric_stat_group;
853 #endif /* TARGET_CORE_BASE_H */