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_DESC_TYPE_OFFSET 8
41 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
42 #define SPC_VALIDITY_OFFSET 10
43 #define SPC_ASC_KEY_OFFSET 12
44 #define SPC_ASCQ_KEY_OFFSET 13
45 #define TRANSPORT_IQN_LEN 224
46 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
47 #define LU_GROUP_NAME_BUF 256
48 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
49 #define TG_PT_GROUP_NAME_BUF 256
50 /* Used to parse VPD into struct t10_vpd */
51 #define VPD_TMP_BUF_SIZE 254
52 /* Used by transport_generic_cmd_sequencer() */
53 #define READ_BLOCK_LEN 6
54 #define READ_CAP_LEN 8
55 #define READ_POSITION_LEN 20
56 #define INQUIRY_LEN 36
57 /* Used by transport_get_inquiry_vpd_serial() */
58 #define INQUIRY_VPD_SERIAL_LEN 254
59 /* Used by transport_get_inquiry_vpd_device_ident() */
60 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
62 /* Attempts before moving from SHORT to LONG */
63 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
64 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
65 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
67 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
69 /* struct se_dev_attrib sanity values */
70 /* Default max_unmap_lba_count */
71 #define DA_MAX_UNMAP_LBA_COUNT 0
72 /* Default max_unmap_block_desc_count */
73 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
74 /* Default unmap_granularity */
75 #define DA_UNMAP_GRANULARITY_DEFAULT 0
76 /* Default unmap_granularity_alignment */
77 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
78 /* Default max_write_same_len, disabled by default */
79 #define DA_MAX_WRITE_SAME_LEN 0
80 /* Default max transfer length */
81 #define DA_FABRIC_MAX_SECTORS 8192
82 /* Use a model alias based on the configfs backend device name */
83 #define DA_EMULATE_MODEL_ALIAS 0
84 /* Emulation for Direct Page Out */
85 #define DA_EMULATE_DPO 0
86 /* Emulation for Forced Unit Access WRITEs */
87 #define DA_EMULATE_FUA_WRITE 1
88 /* Emulation for Forced Unit Access READs */
89 #define DA_EMULATE_FUA_READ 0
90 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
91 #define DA_EMULATE_WRITE_CACHE 0
92 /* Emulation for UNIT ATTENTION Interlock Control */
93 #define DA_EMULATE_UA_INTLLCK_CTRL 0
94 /* Emulation for TASK_ABORTED status (TAS) by default */
95 #define DA_EMULATE_TAS 1
96 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
97 #define DA_EMULATE_TPU 0
99 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
100 * block/blk-lib.c:blkdev_issue_discard()
102 #define DA_EMULATE_TPWS 0
103 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
104 #define DA_EMULATE_CAW 1
105 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
106 #define DA_EMULATE_3PC 1
107 /* No Emulation for PSCSI by default */
108 #define DA_EMULATE_ALUA 0
109 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
110 #define DA_ENFORCE_PR_ISIDS 1
111 /* Force SPC-3 PR Activate Persistence across Target Power Loss */
112 #define DA_FORCE_PR_APTPL 0
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_INQUIRY_BUF 1024
121 #define SE_MODE_PAGE_BUF 512
122 #define SE_SENSE_BUF 96
124 /* struct se_hba->hba_flags */
125 enum hba_flags_table {
126 HBA_FLAGS_INTERNAL_USE = 0x01,
127 HBA_FLAGS_PSCSI_MODE = 0x02,
130 /* struct se_lun->lun_status */
131 enum transport_lun_status_table {
132 TRANSPORT_LUN_STATUS_FREE = 0,
133 TRANSPORT_LUN_STATUS_ACTIVE = 1,
136 /* struct se_portal_group->se_tpg_type */
137 enum transport_tpg_type_table {
138 TRANSPORT_TPG_TYPE_NORMAL = 0,
139 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
142 /* Special transport agnostic struct se_cmd->t_states */
143 enum transport_state_table {
144 TRANSPORT_NO_STATE = 0,
145 TRANSPORT_NEW_CMD = 1,
146 TRANSPORT_WRITE_PENDING = 3,
147 TRANSPORT_PROCESSING = 5,
148 TRANSPORT_COMPLETE = 6,
149 TRANSPORT_ISTATE_PROCESSING = 11,
150 TRANSPORT_COMPLETE_QF_WP = 18,
151 TRANSPORT_COMPLETE_QF_OK = 19,
154 /* Used for struct se_cmd->se_cmd_flags */
155 enum se_cmd_flags_table {
156 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
157 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
158 SCF_EMULATED_TASK_SENSE = 0x00000004,
159 SCF_SCSI_DATA_CDB = 0x00000008,
160 SCF_SCSI_TMR_CDB = 0x00000010,
161 SCF_FUA = 0x00000080,
162 SCF_SE_LUN_CMD = 0x00000100,
163 SCF_BIDI = 0x00000400,
164 SCF_SENT_CHECK_CONDITION = 0x00000800,
165 SCF_OVERFLOW_BIT = 0x00001000,
166 SCF_UNDERFLOW_BIT = 0x00002000,
167 SCF_SEND_DELAYED_TAS = 0x00004000,
168 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
169 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
170 SCF_ACK_KREF = 0x00040000,
171 SCF_COMPARE_AND_WRITE = 0x00080000,
172 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
173 SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
176 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
177 enum transport_lunflags_table {
178 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
179 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
180 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
181 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
185 * Used by transport_send_check_condition_and_sense()
186 * to signal which ASC/ASCQ sense payload should be built.
188 typedef unsigned __bitwise__ sense_reason_t;
190 enum tcm_sense_reason_table {
191 #define R(x) (__force sense_reason_t )(x)
192 TCM_NO_SENSE = R(0x00),
193 TCM_NON_EXISTENT_LUN = R(0x01),
194 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
195 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
196 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
197 TCM_SERVICE_CRC_ERROR = R(0x05),
198 TCM_SNACK_REJECTED = R(0x06),
199 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
200 TCM_INVALID_CDB_FIELD = R(0x08),
201 TCM_INVALID_PARAMETER_LIST = R(0x09),
202 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
203 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
204 TCM_WRITE_PROTECTED = R(0x0c),
205 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
206 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
207 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
208 TCM_RESERVATION_CONFLICT = R(0x10),
209 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
210 TCM_OUT_OF_RESOURCES = R(0x12),
211 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
212 TCM_MISCOMPARE_VERIFY = R(0x14),
213 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
214 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
215 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
219 enum target_sc_flags_table {
220 TARGET_SCF_BIDI_OP = 0x01,
221 TARGET_SCF_ACK_KREF = 0x02,
222 TARGET_SCF_UNKNOWN_SIZE = 0x04,
225 /* fabric independent task management function values */
226 enum tcm_tmreq_table {
228 TMR_ABORT_TASK_SET = 2,
230 TMR_CLEAR_TASK_SET = 4,
232 TMR_TARGET_WARM_RESET = 6,
233 TMR_TARGET_COLD_RESET = 7,
236 /* fabric independent task management response values */
237 enum tcm_tmrsp_table {
238 TMR_FUNCTION_FAILED = 0,
239 TMR_FUNCTION_COMPLETE = 1,
240 TMR_TASK_DOES_NOT_EXIST = 2,
241 TMR_LUN_DOES_NOT_EXIST = 3,
242 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
243 TMR_FUNCTION_REJECTED = 5,
247 * Used for target SCSI statistics
252 SCSI_AUTH_INTR_INDEX,
258 struct t10_alua_lba_map_member {
259 struct list_head lba_map_mem_list;
260 int lba_map_mem_alua_state;
261 int lba_map_mem_alua_pg_id;
264 struct t10_alua_lba_map {
265 u64 lba_map_first_lba;
266 u64 lba_map_last_lba;
267 struct list_head lba_map_list;
268 struct list_head lba_map_mem_list;
272 /* ALUA Target Port Group ID */
273 u16 alua_tg_pt_gps_counter;
274 u32 alua_tg_pt_gps_count;
275 /* Referrals support */
276 spinlock_t lba_map_lock;
277 u32 lba_map_segment_size;
278 u32 lba_map_segment_multiplier;
279 struct list_head lba_map_list;
280 spinlock_t tg_pt_gps_lock;
281 struct se_device *t10_dev;
282 /* Used for default ALUA Target Port Group */
283 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
284 /* Used for default ALUA Target Port Group ConfigFS group */
285 struct config_group alua_tg_pt_gps_group;
286 struct list_head tg_pt_gps_list;
289 struct t10_alua_lu_gp {
293 atomic_t lu_gp_ref_cnt;
294 spinlock_t lu_gp_lock;
295 struct config_group lu_gp_group;
296 struct list_head lu_gp_node;
297 struct list_head lu_gp_mem_list;
300 struct t10_alua_lu_gp_member {
302 atomic_t lu_gp_mem_ref_cnt;
303 spinlock_t lu_gp_mem_lock;
304 struct t10_alua_lu_gp *lu_gp;
305 struct se_device *lu_gp_mem_dev;
306 struct list_head lu_gp_mem_list;
309 struct t10_alua_tg_pt_gp {
311 int tg_pt_gp_valid_id;
312 int tg_pt_gp_alua_supported_states;
313 int tg_pt_gp_alua_pending_state;
314 int tg_pt_gp_alua_previous_state;
315 int tg_pt_gp_alua_access_status;
316 int tg_pt_gp_alua_access_type;
317 int tg_pt_gp_nonop_delay_msecs;
318 int tg_pt_gp_trans_delay_msecs;
319 int tg_pt_gp_implicit_trans_secs;
321 int tg_pt_gp_write_metadata;
322 u32 tg_pt_gp_members;
323 atomic_t tg_pt_gp_alua_access_state;
324 atomic_t tg_pt_gp_ref_cnt;
325 spinlock_t tg_pt_gp_lock;
326 struct mutex tg_pt_gp_md_mutex;
327 struct se_device *tg_pt_gp_dev;
328 struct config_group tg_pt_gp_group;
329 struct list_head tg_pt_gp_list;
330 struct list_head tg_pt_gp_mem_list;
331 struct se_port *tg_pt_gp_alua_port;
332 struct se_node_acl *tg_pt_gp_alua_nacl;
333 struct delayed_work tg_pt_gp_transition_work;
334 struct completion *tg_pt_gp_transition_complete;
337 struct t10_alua_tg_pt_gp_member {
339 atomic_t tg_pt_gp_mem_ref_cnt;
340 spinlock_t tg_pt_gp_mem_lock;
341 struct t10_alua_tg_pt_gp *tg_pt_gp;
342 struct se_port *tg_pt;
343 struct list_head tg_pt_gp_mem_list;
347 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
348 int protocol_identifier_set;
349 u32 protocol_identifier;
350 u32 device_identifier_code_set;
352 u32 device_identifier_type;
353 struct list_head vpd_list;
360 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
361 spinlock_t t10_vpd_lock;
362 struct se_device *t10_dev;
363 struct config_group t10_wwn_group;
364 struct list_head t10_vpd_list;
367 struct t10_pr_registration {
368 /* Used for fabrics that contain WWN+ISID */
369 #define PR_REG_ISID_LEN 16
370 /* PR_REG_ISID_LEN + ',i,0x' */
371 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
372 char pr_reg_isid[PR_REG_ISID_LEN];
373 /* Used during APTPL metadata reading */
374 #define PR_APTPL_MAX_IPORT_LEN 256
375 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
376 /* Used during APTPL metadata reading */
377 #define PR_APTPL_MAX_TPORT_LEN 256
378 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
381 /* Reservation effects all target ports */
382 int pr_reg_all_tg_pt;
383 /* Activate Persistence across Target Power Loss */
388 /* Used for fabric initiator WWPNs using a ISID */
389 bool isid_present_at_reg;
390 u32 pr_res_mapped_lun;
391 u32 pr_aptpl_target_lun;
392 u32 pr_res_generation;
395 atomic_t pr_res_holders;
396 struct se_node_acl *pr_reg_nacl;
397 struct se_dev_entry *pr_reg_deve;
398 struct se_lun *pr_reg_tg_pt_lun;
399 struct list_head pr_reg_list;
400 struct list_head pr_reg_abort_list;
401 struct list_head pr_reg_aptpl_list;
402 struct list_head pr_reg_atp_list;
403 struct list_head pr_reg_atp_mem_list;
406 struct t10_reservation {
407 /* Reservation effects all target ports */
409 /* Activate Persistence across Target Power Loss enabled
412 #define PR_APTPL_BUF_LEN 8192
414 spinlock_t registration_lock;
415 spinlock_t aptpl_reg_lock;
417 * This will always be set by one individual I_T Nexus.
418 * However with all_tg_pt=1, other I_T Nexus from the
419 * same initiator can access PR reg/res info on a different
422 * There is also the 'All Registrants' case, where there is
423 * a single *pr_res_holder of the reservation, but all
424 * registrations are considered reservation holders.
426 struct se_node_acl *pr_res_holder;
427 struct list_head registration_list;
428 struct list_head aptpl_reg_list;
432 /* Task Management function to be performed */
434 /* Task Management response to send */
437 /* Reference to ITT that Task Mgmt should be performed */
439 void *fabric_tmr_ptr;
440 struct se_cmd *task_cmd;
441 struct se_device *tmr_dev;
442 struct se_lun *tmr_lun;
443 struct list_head tmr_list;
446 enum target_prot_op {
447 TARGET_PROT_NORMAL = 0,
448 TARGET_PROT_DIN_INSERT = (1 << 0),
449 TARGET_PROT_DOUT_INSERT = (1 << 1),
450 TARGET_PROT_DIN_STRIP = (1 << 2),
451 TARGET_PROT_DOUT_STRIP = (1 << 3),
452 TARGET_PROT_DIN_PASS = (1 << 4),
453 TARGET_PROT_DOUT_PASS = (1 << 5),
456 #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
457 TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
458 TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
460 enum target_prot_type {
461 TARGET_DIF_TYPE0_PROT,
462 TARGET_DIF_TYPE1_PROT,
463 TARGET_DIF_TYPE2_PROT,
464 TARGET_DIF_TYPE3_PROT,
467 enum target_core_dif_check {
468 TARGET_DIF_CHECK_GUARD = 0x1 << 0,
469 TARGET_DIF_CHECK_APPTAG = 0x1 << 1,
470 TARGET_DIF_CHECK_REFTAG = 0x1 << 2,
473 struct se_dif_v1_tuple {
479 /* for sam_task_attr */
480 #define TCM_SIMPLE_TAG 0x20
481 #define TCM_HEAD_TAG 0x21
482 #define TCM_ORDERED_TAG 0x22
483 #define TCM_ACA_TAG 0x24
486 /* SAM response code being sent to initiator */
490 u16 scsi_sense_length;
491 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
492 int alua_nonop_delay;
493 /* See include/linux/dma-mapping.h */
494 enum dma_data_direction data_direction;
495 /* For SAM Task Attribute */
497 /* Used for se_sess->sess_tag_pool */
498 unsigned int map_tag;
499 /* Transport protocol dependent state, see transport_state_table */
500 enum transport_state_table t_state;
501 unsigned cmd_wait_set:1;
502 unsigned unknown_data_length:1;
503 /* See se_cmd_flags_table */
506 /* Total size in bytes associated with command */
510 /* Persistent Reservation key */
512 /* Used for sense data */
514 struct list_head se_delayed_node;
515 struct list_head se_qf_node;
516 struct se_device *se_dev;
517 struct se_dev_entry *se_deve;
518 struct se_lun *se_lun;
519 /* Only used for internal passthrough and legacy TCM fabric modules */
520 struct se_session *se_sess;
521 struct se_tmr_req *se_tmr_req;
522 struct list_head se_cmd_list;
523 struct completion cmd_wait_comp;
524 struct kref cmd_kref;
525 struct target_core_fabric_ops *se_tfo;
526 sense_reason_t (*execute_cmd)(struct se_cmd *);
527 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
528 u32, enum dma_data_direction);
529 sense_reason_t (*transport_complete_callback)(struct se_cmd *);
531 unsigned char *t_task_cdb;
532 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
533 unsigned long long t_task_lba;
534 unsigned int t_task_nolb;
535 unsigned int transport_state;
536 #define CMD_T_ABORTED (1 << 0)
537 #define CMD_T_ACTIVE (1 << 1)
538 #define CMD_T_COMPLETE (1 << 2)
539 #define CMD_T_SENT (1 << 4)
540 #define CMD_T_STOP (1 << 5)
541 #define CMD_T_DEV_ACTIVE (1 << 7)
542 #define CMD_T_REQUEST_STOP (1 << 8)
543 #define CMD_T_BUSY (1 << 9)
544 spinlock_t t_state_lock;
545 struct completion t_transport_stop_comp;
547 struct work_struct work;
549 struct scatterlist *t_data_sg;
550 struct scatterlist *t_data_sg_orig;
551 unsigned int t_data_nents;
552 unsigned int t_data_nents_orig;
554 struct scatterlist *t_bidi_data_sg;
555 unsigned int t_bidi_data_nents;
557 struct list_head state_list;
560 /* old task stop completion, consider merging with some of the above */
561 struct completion task_stop_comp;
563 /* backend private data */
566 /* Used for lun->lun_ref counting */
569 /* DIF related members */
570 enum target_prot_op prot_op;
571 enum target_prot_type prot_type;
575 struct scatterlist *t_prot_sg;
576 unsigned int t_prot_nents;
577 sense_reason_t pi_err;
585 struct se_node_acl *ua_nacl;
586 struct list_head ua_nacl_list;
590 char initiatorname[TRANSPORT_IQN_LEN];
591 /* Used to signal demo mode created ACL, disabled by default */
592 bool dynamic_node_acl;
596 #define MAX_ACL_TAG_SIZE 64
597 char acl_tag[MAX_ACL_TAG_SIZE];
598 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
599 atomic_t acl_pr_ref_count;
600 struct se_dev_entry **device_list;
601 struct se_session *nacl_sess;
602 struct se_portal_group *se_tpg;
603 spinlock_t device_list_lock;
604 spinlock_t nacl_sess_lock;
605 struct config_group acl_group;
606 struct config_group acl_attrib_group;
607 struct config_group acl_auth_group;
608 struct config_group acl_param_group;
609 struct config_group acl_fabric_stat_group;
610 struct config_group *acl_default_groups[5];
611 struct list_head acl_list;
612 struct list_head acl_sess_list;
613 struct completion acl_free_comp;
614 struct kref acl_kref;
618 unsigned sess_tearing_down:1;
620 enum target_prot_op sup_prot_ops;
621 struct se_node_acl *se_node_acl;
622 struct se_portal_group *se_tpg;
623 void *fabric_sess_ptr;
624 struct list_head sess_list;
625 struct list_head sess_acl_list;
626 struct list_head sess_cmd_list;
627 struct list_head sess_wait_list;
628 spinlock_t sess_cmd_lock;
629 struct kref sess_kref;
631 struct percpu_ida sess_tag_pool;
635 struct se_transform_info;
638 struct se_ml_stat_grps {
639 struct config_group stat_group;
640 struct config_group scsi_auth_intr_group;
641 struct config_group scsi_att_intr_port_group;
645 char initiatorname[TRANSPORT_IQN_LEN];
647 struct se_node_acl *se_lun_nacl;
648 struct se_lun *se_lun;
649 struct list_head lacl_list;
650 struct config_group se_lun_group;
651 struct se_ml_stat_grps ml_stat_grps;
654 struct se_dev_entry {
655 bool def_pr_registered;
656 /* See transport_lunflags_table */
666 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
667 atomic_t pr_ref_count;
668 struct se_lun_acl *se_lun_acl;
670 struct se_lun *se_lun;
671 struct list_head alua_port_list;
672 struct list_head ua_list;
675 struct se_dev_attrib {
676 int emulate_model_alias;
678 int emulate_fua_write;
679 int emulate_fua_read;
680 int emulate_write_cache;
681 int emulate_ua_intlck_ctrl;
688 enum target_prot_type pi_prot_type;
689 enum target_prot_type hw_pi_prot_type;
690 int enforce_pr_isids;
693 int emulate_rest_reord;
697 u32 fabric_max_sectors;
701 u32 max_unmap_lba_count;
702 u32 max_unmap_block_desc_count;
703 u32 unmap_granularity;
704 u32 unmap_granularity_alignment;
705 u32 max_write_same_len;
706 u32 max_bytes_per_io;
707 struct se_device *da_dev;
708 struct config_group da_group;
711 struct se_port_stat_grps {
712 struct config_group stat_group;
713 struct config_group scsi_port_group;
714 struct config_group scsi_tgt_port_group;
715 struct config_group scsi_transport_group;
719 #define SE_LUN_LINK_MAGIC 0xffff7771
721 /* See transport_lun_status_table */
722 enum transport_lun_status_table lun_status;
726 atomic_t lun_acl_count;
727 spinlock_t lun_acl_lock;
728 spinlock_t lun_sep_lock;
729 struct completion lun_shutdown_comp;
730 struct list_head lun_acl_list;
731 struct se_device *lun_se_dev;
732 struct se_port *lun_sep;
733 struct config_group lun_group;
734 struct se_port_stat_grps port_stat_grps;
735 struct completion lun_ref_comp;
736 struct percpu_ref lun_ref;
739 struct se_dev_stat_grps {
740 struct config_group stat_group;
741 struct config_group scsi_dev_group;
742 struct config_group scsi_tgt_dev_group;
743 struct config_group scsi_lu_group;
747 #define SE_DEV_LINK_MAGIC 0xfeeddeef
749 /* RELATIVE TARGET PORT IDENTIFER Counter */
750 u16 dev_rpti_counter;
751 /* Used for SAM Task Attribute ordering */
752 u32 dev_cur_ordered_id;
754 #define DF_CONFIGURED 0x00000001
755 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
756 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
757 #define DF_USING_UDEV_PATH 0x00000008
758 #define DF_USING_ALIAS 0x00000010
760 /* Physical device queue depth */
762 /* Used for SPC-2 reservations enforce of ISIDs */
763 u64 dev_res_bin_isid;
764 /* Pointer to transport specific device structure */
767 atomic_long_t num_resets;
768 atomic_long_t num_cmds;
769 atomic_long_t read_bytes;
770 atomic_long_t write_bytes;
771 /* Active commands on this virtual SE device */
772 atomic_t simple_cmds;
773 atomic_t dev_ordered_id;
774 atomic_t dev_ordered_sync;
775 atomic_t dev_qf_count;
777 spinlock_t delayed_cmd_lock;
778 spinlock_t execute_task_lock;
779 spinlock_t dev_reservation_lock;
780 unsigned int dev_reservation_flags;
781 #define DRF_SPC2_RESERVATIONS 0x00000001
782 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
783 spinlock_t se_port_lock;
784 spinlock_t se_tmr_lock;
785 spinlock_t qf_cmd_lock;
786 struct semaphore caw_sem;
787 /* Used for legacy SPC-2 reservationsa */
788 struct se_node_acl *dev_reserved_node_acl;
789 /* Used for ALUA Logical Unit Group membership */
790 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
791 /* Used for SPC-3 Persistent Reservations */
792 struct t10_pr_registration *dev_pr_res_holder;
793 struct list_head dev_sep_list;
794 struct list_head dev_tmr_list;
795 struct workqueue_struct *tmr_wq;
796 struct work_struct qf_work_queue;
797 struct list_head delayed_cmd_list;
798 struct list_head state_list;
799 struct list_head qf_cmd_list;
800 struct list_head g_dev_node;
801 /* Pointer to associated SE HBA */
802 struct se_hba *se_hba;
803 /* T10 Inquiry and VPD WWN Information */
804 struct t10_wwn t10_wwn;
805 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
806 struct t10_alua t10_alua;
807 /* T10 SPC-2 + SPC-3 Reservations */
808 struct t10_reservation t10_pr;
809 struct se_dev_attrib dev_attrib;
810 struct config_group dev_group;
811 struct config_group dev_pr_group;
812 struct se_dev_stat_grps dev_stat_grps;
813 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
814 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
815 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
816 unsigned char udev_path[SE_UDEV_PATH_LEN];
817 /* Pointer to template of function pointers for transport */
818 struct se_subsystem_api *transport;
819 /* Linked list for struct se_hba struct se_device list */
820 struct list_head dev_list;
821 struct se_lun xcopy_lun;
822 /* Protection Information */
829 /* See hba_flags_table */
831 /* Virtual iSCSI devices attached. */
834 /* Pointer to transport specific host structure. */
836 struct list_head hba_node;
837 spinlock_t device_lock;
838 struct config_group hba_group;
839 struct mutex hba_access_mutex;
840 struct se_subsystem_api *transport;
843 struct scsi_port_stats {
850 /* RELATIVE TARGET PORT IDENTIFER */
852 int sep_tg_pt_secondary_stat;
853 int sep_tg_pt_secondary_write_md;
855 struct scsi_port_stats sep_stats;
856 /* Used for ALUA Target Port Groups membership */
857 atomic_t sep_tg_pt_secondary_offline;
858 /* Used for PR ALL_TG_PT=1 */
859 atomic_t sep_tg_pt_ref_cnt;
860 spinlock_t sep_alua_lock;
861 struct mutex sep_tg_pt_md_mutex;
862 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
863 struct se_lun *sep_lun;
864 struct se_portal_group *sep_tpg;
865 struct list_head sep_alua_list;
866 struct list_head sep_list;
870 struct se_portal_group *tpg_np_parent;
871 struct config_group tpg_np_group;
874 struct se_portal_group {
875 /* Type of target portal group, see transport_tpg_type_table */
876 enum transport_tpg_type_table se_tpg_type;
877 /* Number of ACLed Initiator Nodes for this TPG */
879 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
880 atomic_t tpg_pr_ref_count;
881 /* Spinlock for adding/removing ACLed Nodes */
882 spinlock_t acl_node_lock;
883 /* Spinlock for adding/removing sessions */
884 spinlock_t session_lock;
885 spinlock_t tpg_lun_lock;
886 /* Pointer to $FABRIC_MOD portal group */
887 void *se_tpg_fabric_ptr;
888 struct list_head se_tpg_node;
889 /* linked list for initiator ACL list */
890 struct list_head acl_node_list;
891 struct se_lun **tpg_lun_list;
892 struct se_lun tpg_virt_lun0;
893 /* List of TCM sessions associated wth this TPG */
894 struct list_head tpg_sess_list;
895 /* Pointer to $FABRIC_MOD dependent code */
896 struct target_core_fabric_ops *se_tpg_tfo;
897 struct se_wwn *se_tpg_wwn;
898 struct config_group tpg_group;
899 struct config_group *tpg_default_groups[7];
900 struct config_group tpg_lun_group;
901 struct config_group tpg_np_group;
902 struct config_group tpg_acl_group;
903 struct config_group tpg_attrib_group;
904 struct config_group tpg_auth_group;
905 struct config_group tpg_param_group;
909 struct target_fabric_configfs *wwn_tf;
910 struct config_group wwn_group;
911 struct config_group *wwn_default_groups[2];
912 struct config_group fabric_stat_group;
915 static inline void atomic_inc_mb(atomic_t *v)
917 smp_mb__before_atomic();
919 smp_mb__after_atomic();
922 static inline void atomic_dec_mb(atomic_t *v)
924 smp_mb__before_atomic();
926 smp_mb__after_atomic();
929 #endif /* TARGET_CORE_BASE_H */