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 512
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,
251 /* ALUA Target Port Group ID */
252 u16 alua_tg_pt_gps_counter;
253 u32 alua_tg_pt_gps_count;
254 spinlock_t tg_pt_gps_lock;
255 struct se_device *t10_dev;
256 /* Used for default ALUA Target Port Group */
257 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
258 /* Used for default ALUA Target Port Group ConfigFS group */
259 struct config_group alua_tg_pt_gps_group;
260 struct list_head tg_pt_gps_list;
263 struct t10_alua_lu_gp {
267 atomic_t lu_gp_ref_cnt;
268 spinlock_t lu_gp_lock;
269 struct config_group lu_gp_group;
270 struct list_head lu_gp_node;
271 struct list_head lu_gp_mem_list;
274 struct t10_alua_lu_gp_member {
276 atomic_t lu_gp_mem_ref_cnt;
277 spinlock_t lu_gp_mem_lock;
278 struct t10_alua_lu_gp *lu_gp;
279 struct se_device *lu_gp_mem_dev;
280 struct list_head lu_gp_mem_list;
283 struct t10_alua_tg_pt_gp {
285 int tg_pt_gp_valid_id;
286 int tg_pt_gp_alua_supported_states;
287 int tg_pt_gp_alua_access_status;
288 int tg_pt_gp_alua_access_type;
289 int tg_pt_gp_nonop_delay_msecs;
290 int tg_pt_gp_trans_delay_msecs;
291 int tg_pt_gp_implicit_trans_secs;
293 int tg_pt_gp_write_metadata;
294 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
295 #define ALUA_MD_BUF_LEN 1024
296 u32 tg_pt_gp_md_buf_len;
297 u32 tg_pt_gp_members;
298 atomic_t tg_pt_gp_alua_access_state;
299 atomic_t tg_pt_gp_ref_cnt;
300 spinlock_t tg_pt_gp_lock;
301 struct mutex tg_pt_gp_md_mutex;
302 struct se_device *tg_pt_gp_dev;
303 struct config_group tg_pt_gp_group;
304 struct list_head tg_pt_gp_list;
305 struct list_head tg_pt_gp_mem_list;
308 struct t10_alua_tg_pt_gp_member {
310 atomic_t tg_pt_gp_mem_ref_cnt;
311 spinlock_t tg_pt_gp_mem_lock;
312 struct t10_alua_tg_pt_gp *tg_pt_gp;
313 struct se_port *tg_pt;
314 struct list_head tg_pt_gp_mem_list;
318 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
319 int protocol_identifier_set;
320 u32 protocol_identifier;
321 u32 device_identifier_code_set;
323 u32 device_identifier_type;
324 struct list_head vpd_list;
331 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
332 spinlock_t t10_vpd_lock;
333 struct se_device *t10_dev;
334 struct config_group t10_wwn_group;
335 struct list_head t10_vpd_list;
338 struct t10_pr_registration {
339 /* Used for fabrics that contain WWN+ISID */
340 #define PR_REG_ISID_LEN 16
341 /* PR_REG_ISID_LEN + ',i,0x' */
342 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
343 char pr_reg_isid[PR_REG_ISID_LEN];
344 /* Used during APTPL metadata reading */
345 #define PR_APTPL_MAX_IPORT_LEN 256
346 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
347 /* Used during APTPL metadata reading */
348 #define PR_APTPL_MAX_TPORT_LEN 256
349 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
352 /* Reservation effects all target ports */
353 int pr_reg_all_tg_pt;
354 /* Activate Persistence across Target Power Loss */
359 /* Used for fabric initiator WWPNs using a ISID */
360 bool isid_present_at_reg;
361 u32 pr_res_mapped_lun;
362 u32 pr_aptpl_target_lun;
363 u32 pr_res_generation;
366 atomic_t pr_res_holders;
367 struct se_node_acl *pr_reg_nacl;
368 struct se_dev_entry *pr_reg_deve;
369 struct se_lun *pr_reg_tg_pt_lun;
370 struct list_head pr_reg_list;
371 struct list_head pr_reg_abort_list;
372 struct list_head pr_reg_aptpl_list;
373 struct list_head pr_reg_atp_list;
374 struct list_head pr_reg_atp_mem_list;
377 struct t10_reservation {
378 /* Reservation effects all target ports */
380 /* Activate Persistence across Target Power Loss enabled
383 #define PR_APTPL_BUF_LEN 8192
385 spinlock_t registration_lock;
386 spinlock_t aptpl_reg_lock;
388 * This will always be set by one individual I_T Nexus.
389 * However with all_tg_pt=1, other I_T Nexus from the
390 * same initiator can access PR reg/res info on a different
393 * There is also the 'All Registrants' case, where there is
394 * a single *pr_res_holder of the reservation, but all
395 * registrations are considered reservation holders.
397 struct se_node_acl *pr_res_holder;
398 struct list_head registration_list;
399 struct list_head aptpl_reg_list;
403 /* Task Management function to be performed */
405 /* Task Management response to send */
408 /* Reference to ITT that Task Mgmt should be performed */
410 void *fabric_tmr_ptr;
411 struct se_cmd *task_cmd;
412 struct se_device *tmr_dev;
413 struct se_lun *tmr_lun;
414 struct list_head tmr_list;
418 /* SAM response code being sent to initiator */
422 u16 scsi_sense_length;
423 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
424 int alua_nonop_delay;
425 /* See include/linux/dma-mapping.h */
426 enum dma_data_direction data_direction;
427 /* For SAM Task Attribute */
429 /* Used for se_sess->sess_tag_pool */
430 unsigned int map_tag;
431 /* Transport protocol dependent state, see transport_state_table */
432 enum transport_state_table t_state;
433 unsigned cmd_wait_set:1;
434 unsigned unknown_data_length:1;
435 /* See se_cmd_flags_table */
438 /* Total size in bytes associated with command */
442 /* Persistent Reservation key */
444 /* Used for sense data */
446 struct list_head se_delayed_node;
447 struct list_head se_qf_node;
448 struct se_device *se_dev;
449 struct se_dev_entry *se_deve;
450 struct se_lun *se_lun;
451 /* Only used for internal passthrough and legacy TCM fabric modules */
452 struct se_session *se_sess;
453 struct se_tmr_req *se_tmr_req;
454 struct list_head se_cmd_list;
455 struct completion cmd_wait_comp;
456 struct kref cmd_kref;
457 struct target_core_fabric_ops *se_tfo;
458 sense_reason_t (*execute_cmd)(struct se_cmd *);
459 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
460 u32, enum dma_data_direction);
461 sense_reason_t (*transport_complete_callback)(struct se_cmd *);
463 unsigned char *t_task_cdb;
464 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
465 unsigned long long t_task_lba;
466 unsigned int t_task_nolb;
467 unsigned int transport_state;
468 #define CMD_T_ABORTED (1 << 0)
469 #define CMD_T_ACTIVE (1 << 1)
470 #define CMD_T_COMPLETE (1 << 2)
471 #define CMD_T_SENT (1 << 4)
472 #define CMD_T_STOP (1 << 5)
473 #define CMD_T_FAILED (1 << 6)
474 #define CMD_T_DEV_ACTIVE (1 << 7)
475 #define CMD_T_REQUEST_STOP (1 << 8)
476 #define CMD_T_BUSY (1 << 9)
477 spinlock_t t_state_lock;
478 struct completion t_transport_stop_comp;
480 struct work_struct work;
482 struct scatterlist *t_data_sg;
483 struct scatterlist *t_data_sg_orig;
484 unsigned int t_data_nents;
485 unsigned int t_data_nents_orig;
487 struct scatterlist *t_bidi_data_sg;
488 unsigned int t_bidi_data_nents;
490 struct list_head state_list;
493 /* old task stop completion, consider merging with some of the above */
494 struct completion task_stop_comp;
496 /* backend private data */
499 /* Used for lun->lun_ref counting */
506 struct se_node_acl *ua_nacl;
507 struct list_head ua_dev_list;
508 struct list_head ua_nacl_list;
512 char initiatorname[TRANSPORT_IQN_LEN];
513 /* Used to signal demo mode created ACL, disabled by default */
514 bool dynamic_node_acl;
518 #define MAX_ACL_TAG_SIZE 64
519 char acl_tag[MAX_ACL_TAG_SIZE];
523 spinlock_t stats_lock;
524 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
525 atomic_t acl_pr_ref_count;
526 struct se_dev_entry **device_list;
527 struct se_session *nacl_sess;
528 struct se_portal_group *se_tpg;
529 spinlock_t device_list_lock;
530 spinlock_t nacl_sess_lock;
531 struct config_group acl_group;
532 struct config_group acl_attrib_group;
533 struct config_group acl_auth_group;
534 struct config_group acl_param_group;
535 struct config_group acl_fabric_stat_group;
536 struct config_group *acl_default_groups[5];
537 struct list_head acl_list;
538 struct list_head acl_sess_list;
539 struct completion acl_free_comp;
540 struct kref acl_kref;
544 unsigned sess_tearing_down:1;
546 struct se_node_acl *se_node_acl;
547 struct se_portal_group *se_tpg;
548 void *fabric_sess_ptr;
549 struct list_head sess_list;
550 struct list_head sess_acl_list;
551 struct list_head sess_cmd_list;
552 struct list_head sess_wait_list;
553 spinlock_t sess_cmd_lock;
554 struct kref sess_kref;
556 struct percpu_ida sess_tag_pool;
560 struct se_transform_info;
563 struct se_ml_stat_grps {
564 struct config_group stat_group;
565 struct config_group scsi_auth_intr_group;
566 struct config_group scsi_att_intr_port_group;
570 char initiatorname[TRANSPORT_IQN_LEN];
572 struct se_node_acl *se_lun_nacl;
573 struct se_lun *se_lun;
574 struct list_head lacl_list;
575 struct config_group se_lun_group;
576 struct se_ml_stat_grps ml_stat_grps;
579 struct se_dev_entry {
580 bool def_pr_registered;
581 /* See transport_lunflags_table */
591 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
592 atomic_t pr_ref_count;
593 struct se_lun_acl *se_lun_acl;
595 struct se_lun *se_lun;
596 struct list_head alua_port_list;
597 struct list_head ua_list;
600 struct se_dev_attrib {
601 int emulate_model_alias;
603 int emulate_fua_write;
604 int emulate_fua_read;
605 int emulate_write_cache;
606 int emulate_ua_intlck_ctrl;
612 int enforce_pr_isids;
614 int emulate_rest_reord;
618 u32 fabric_max_sectors;
622 u32 max_unmap_lba_count;
623 u32 max_unmap_block_desc_count;
624 u32 unmap_granularity;
625 u32 unmap_granularity_alignment;
626 u32 max_write_same_len;
627 struct se_device *da_dev;
628 struct config_group da_group;
631 struct se_port_stat_grps {
632 struct config_group stat_group;
633 struct config_group scsi_port_group;
634 struct config_group scsi_tgt_port_group;
635 struct config_group scsi_transport_group;
639 #define SE_LUN_LINK_MAGIC 0xffff7771
641 /* See transport_lun_status_table */
642 enum transport_lun_status_table lun_status;
646 atomic_t lun_acl_count;
647 spinlock_t lun_acl_lock;
648 spinlock_t lun_sep_lock;
649 struct completion lun_shutdown_comp;
650 struct list_head lun_acl_list;
651 struct se_device *lun_se_dev;
652 struct se_port *lun_sep;
653 struct config_group lun_group;
654 struct se_port_stat_grps port_stat_grps;
655 struct completion lun_ref_comp;
656 struct percpu_ref lun_ref;
659 struct se_dev_stat_grps {
660 struct config_group stat_group;
661 struct config_group scsi_dev_group;
662 struct config_group scsi_tgt_dev_group;
663 struct config_group scsi_lu_group;
667 #define SE_DEV_LINK_MAGIC 0xfeeddeef
669 /* RELATIVE TARGET PORT IDENTIFER Counter */
670 u16 dev_rpti_counter;
671 /* Used for SAM Task Attribute ordering */
672 u32 dev_cur_ordered_id;
674 #define DF_CONFIGURED 0x00000001
675 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
676 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
677 #define DF_USING_UDEV_PATH 0x00000008
678 #define DF_USING_ALIAS 0x00000010
680 /* Physical device queue depth */
682 /* Used for SPC-2 reservations enforce of ISIDs */
683 u64 dev_res_bin_isid;
684 /* Pointer to transport specific device structure */
687 atomic_long_t num_resets;
688 atomic_long_t num_cmds;
689 atomic_long_t read_bytes;
690 atomic_long_t write_bytes;
691 /* Active commands on this virtual SE device */
692 atomic_t simple_cmds;
693 atomic_t dev_ordered_id;
694 atomic_t dev_ordered_sync;
695 atomic_t dev_qf_count;
697 spinlock_t delayed_cmd_lock;
698 spinlock_t execute_task_lock;
699 spinlock_t dev_reservation_lock;
700 unsigned int dev_reservation_flags;
701 #define DRF_SPC2_RESERVATIONS 0x00000001
702 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
703 spinlock_t se_port_lock;
704 spinlock_t se_tmr_lock;
705 spinlock_t qf_cmd_lock;
706 struct semaphore caw_sem;
707 /* Used for legacy SPC-2 reservationsa */
708 struct se_node_acl *dev_reserved_node_acl;
709 /* Used for ALUA Logical Unit Group membership */
710 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
711 /* Used for SPC-3 Persistent Reservations */
712 struct t10_pr_registration *dev_pr_res_holder;
713 struct list_head dev_sep_list;
714 struct list_head dev_tmr_list;
715 struct workqueue_struct *tmr_wq;
716 struct work_struct qf_work_queue;
717 struct list_head delayed_cmd_list;
718 struct list_head state_list;
719 struct list_head qf_cmd_list;
720 struct list_head g_dev_node;
721 /* Pointer to associated SE HBA */
722 struct se_hba *se_hba;
723 /* T10 Inquiry and VPD WWN Information */
724 struct t10_wwn t10_wwn;
725 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
726 struct t10_alua t10_alua;
727 /* T10 SPC-2 + SPC-3 Reservations */
728 struct t10_reservation t10_pr;
729 struct se_dev_attrib dev_attrib;
730 struct config_group dev_group;
731 struct config_group dev_pr_group;
732 struct se_dev_stat_grps dev_stat_grps;
733 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
734 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
735 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
736 unsigned char udev_path[SE_UDEV_PATH_LEN];
737 /* Pointer to template of function pointers for transport */
738 struct se_subsystem_api *transport;
739 /* Linked list for struct se_hba struct se_device list */
740 struct list_head dev_list;
741 struct se_lun xcopy_lun;
747 /* See hba_flags_table */
749 /* Virtual iSCSI devices attached. */
752 /* Pointer to transport specific host structure. */
754 struct list_head hba_node;
755 spinlock_t device_lock;
756 struct config_group hba_group;
757 struct mutex hba_access_mutex;
758 struct se_subsystem_api *transport;
761 struct scsi_port_stats {
768 /* RELATIVE TARGET PORT IDENTIFER */
770 int sep_tg_pt_secondary_stat;
771 int sep_tg_pt_secondary_write_md;
773 struct scsi_port_stats sep_stats;
774 /* Used for ALUA Target Port Groups membership */
775 atomic_t sep_tg_pt_secondary_offline;
776 /* Used for PR ALL_TG_PT=1 */
777 atomic_t sep_tg_pt_ref_cnt;
778 spinlock_t sep_alua_lock;
779 struct mutex sep_tg_pt_md_mutex;
780 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
781 struct se_lun *sep_lun;
782 struct se_portal_group *sep_tpg;
783 struct list_head sep_alua_list;
784 struct list_head sep_list;
788 struct se_portal_group *tpg_np_parent;
789 struct config_group tpg_np_group;
792 struct se_portal_group {
793 /* Type of target portal group, see transport_tpg_type_table */
794 enum transport_tpg_type_table se_tpg_type;
795 /* Number of ACLed Initiator Nodes for this TPG */
797 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
798 atomic_t tpg_pr_ref_count;
799 /* Spinlock for adding/removing ACLed Nodes */
800 spinlock_t acl_node_lock;
801 /* Spinlock for adding/removing sessions */
802 spinlock_t session_lock;
803 spinlock_t tpg_lun_lock;
804 /* Pointer to $FABRIC_MOD portal group */
805 void *se_tpg_fabric_ptr;
806 struct list_head se_tpg_node;
807 /* linked list for initiator ACL list */
808 struct list_head acl_node_list;
809 struct se_lun **tpg_lun_list;
810 struct se_lun tpg_virt_lun0;
811 /* List of TCM sessions associated wth this TPG */
812 struct list_head tpg_sess_list;
813 /* Pointer to $FABRIC_MOD dependent code */
814 struct target_core_fabric_ops *se_tpg_tfo;
815 struct se_wwn *se_tpg_wwn;
816 struct config_group tpg_group;
817 struct config_group *tpg_default_groups[7];
818 struct config_group tpg_lun_group;
819 struct config_group tpg_np_group;
820 struct config_group tpg_acl_group;
821 struct config_group tpg_attrib_group;
822 struct config_group tpg_auth_group;
823 struct config_group tpg_param_group;
827 struct target_fabric_configfs *wwn_tf;
828 struct config_group wwn_group;
829 struct config_group *wwn_default_groups[2];
830 struct config_group fabric_stat_group;
833 #endif /* TARGET_CORE_BASE_H */