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1#ifndef TARGET_CORE_BASE_H
2#define TARGET_CORE_BASE_H
3
4#include <linux/in.h>
5#include <linux/configfs.h>
6#include <linux/dma-mapping.h>
7#include <linux/blkdev.h>
8#include <scsi/scsi_cmnd.h>
9#include <net/sock.h>
10#include <net/tcp.h>
11
12#define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml"
13#define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
14
15/* Used by transport_generic_allocate_iovecs() */
16#define TRANSPORT_IOV_DATA_BUFFER 5
17/* Maximum Number of LUNs per Target Portal Group */
18/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
19#define TRANSPORT_MAX_LUNS_PER_TPG 256
20/*
21 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
22 *
23 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
24 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
25 * 16-byte CDBs by default and require an extra allocation for
26 * 32-byte CDBs to because of legacy issues.
27 *
28 * Within TCM Core there are no such legacy limitiations, so we go ahead
29 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
30 * within all TCM Core and subsystem plugin code.
31 */
32#define TCM_MAX_COMMAND_SIZE 32
33/*
34 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
35 * defined 96, but the real limit is 252 (or 260 including the header)
36 */
37#define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
38/* Used by transport_send_check_condition_and_sense() */
39#define SPC_SENSE_KEY_OFFSET 2
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 128
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
58
59/* struct se_hba->hba_flags */
60enum hba_flags_table {
61 HBA_FLAGS_INTERNAL_USE = 0x01,
62 HBA_FLAGS_PSCSI_MODE = 0x02,
63};
64
65/* struct se_lun->lun_status */
66enum transport_lun_status_table {
67 TRANSPORT_LUN_STATUS_FREE = 0,
68 TRANSPORT_LUN_STATUS_ACTIVE = 1,
69};
70
71/* struct se_portal_group->se_tpg_type */
72enum transport_tpg_type_table {
73 TRANSPORT_TPG_TYPE_NORMAL = 0,
74 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
75};
76
77/* Used for generate timer flags */
78enum timer_flags_table {
79 TF_RUNNING = 0x01,
80 TF_STOP = 0x02,
81};
82
83/* Special transport agnostic struct se_cmd->t_states */
84enum transport_state_table {
85 TRANSPORT_NO_STATE = 0,
86 TRANSPORT_NEW_CMD = 1,
87 TRANSPORT_DEFERRED_CMD = 2,
88 TRANSPORT_WRITE_PENDING = 3,
89 TRANSPORT_PROCESS_WRITE = 4,
90 TRANSPORT_PROCESSING = 5,
91 TRANSPORT_COMPLETE_OK = 6,
92 TRANSPORT_COMPLETE_FAILURE = 7,
93 TRANSPORT_COMPLETE_TIMEOUT = 8,
94 TRANSPORT_PROCESS_TMR = 9,
95 TRANSPORT_TMR_COMPLETE = 10,
96 TRANSPORT_ISTATE_PROCESSING = 11,
97 TRANSPORT_ISTATE_PROCESSED = 12,
98 TRANSPORT_KILL = 13,
99 TRANSPORT_REMOVE = 14,
100 TRANSPORT_FREE = 15,
101 TRANSPORT_NEW_CMD_MAP = 16,
102 TRANSPORT_FREE_CMD_INTR = 17,
103 TRANSPORT_COMPLETE_QF_WP = 18,
104};
105
106/* Used for struct se_cmd->se_cmd_flags */
107enum se_cmd_flags_table {
108 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
109 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
110 SCF_EMULATED_TASK_SENSE = 0x00000004,
111 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
112 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
113 SCF_SCSI_NON_DATA_CDB = 0x00000040,
114 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
115 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
116 SCF_SE_CMD_FAILED = 0x00000400,
117 SCF_SE_LUN_CMD = 0x00000800,
118 SCF_SE_ALLOW_EOO = 0x00001000,
119 SCF_SENT_CHECK_CONDITION = 0x00004000,
120 SCF_OVERFLOW_BIT = 0x00008000,
121 SCF_UNDERFLOW_BIT = 0x00010000,
122 SCF_SENT_DELAYED_TAS = 0x00020000,
123 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
124 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
125 SCF_UNUSED = 0x00100000,
126 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
127 SCF_EMULATE_CDB_ASYNC = 0x01000000,
128 SCF_EMULATE_QUEUE_FULL = 0x02000000,
129};
130
131/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
132enum transport_lunflags_table {
133 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
134 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
135 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
136 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
137};
138
139/* struct se_device->dev_status */
140enum transport_device_status_table {
141 TRANSPORT_DEVICE_ACTIVATED = 0x01,
142 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
143 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
144 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
145 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
146 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
147};
148
149/*
150 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
151 * to signal which ASC/ASCQ sense payload should be built.
152 */
153enum tcm_sense_reason_table {
154 TCM_NON_EXISTENT_LUN = 0x01,
155 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
156 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
157 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
158 TCM_SERVICE_CRC_ERROR = 0x05,
159 TCM_SNACK_REJECTED = 0x06,
160 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
161 TCM_INVALID_CDB_FIELD = 0x08,
162 TCM_INVALID_PARAMETER_LIST = 0x09,
163 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
164 TCM_UNKNOWN_MODE_PAGE = 0x0b,
165 TCM_WRITE_PROTECTED = 0x0c,
166 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
167 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
168 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
169};
170
171struct se_obj {
172 atomic_t obj_access_count;
173} ____cacheline_aligned;
174
175/*
176 * Used by TCM Core internally to signal if ALUA emulation is enabled or
177 * disabled, or running in with TCM/pSCSI passthrough mode
178 */
179typedef enum {
180 SPC_ALUA_PASSTHROUGH,
181 SPC2_ALUA_DISABLED,
182 SPC3_ALUA_EMULATED
183} t10_alua_index_t;
184
185/*
186 * Used by TCM Core internally to signal if SAM Task Attribute emulation
187 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
188 */
189typedef enum {
190 SAM_TASK_ATTR_PASSTHROUGH,
191 SAM_TASK_ATTR_UNTAGGED,
192 SAM_TASK_ATTR_EMULATED
193} t10_task_attr_index_t;
194
195/*
196 * Used for target SCSI statistics
197 */
198typedef enum {
199 SCSI_INST_INDEX,
200 SCSI_DEVICE_INDEX,
201 SCSI_AUTH_INTR_INDEX,
202 SCSI_INDEX_TYPE_MAX
203} scsi_index_t;
204
205struct se_cmd;
206
207struct t10_alua {
208 t10_alua_index_t alua_type;
209 /* ALUA Target Port Group ID */
210 u16 alua_tg_pt_gps_counter;
211 u32 alua_tg_pt_gps_count;
212 spinlock_t tg_pt_gps_lock;
213 struct se_subsystem_dev *t10_sub_dev;
214 /* Used for default ALUA Target Port Group */
215 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
216 /* Used for default ALUA Target Port Group ConfigFS group */
217 struct config_group alua_tg_pt_gps_group;
218 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
219 struct list_head tg_pt_gps_list;
220} ____cacheline_aligned;
221
222struct t10_alua_lu_gp {
223 u16 lu_gp_id;
224 int lu_gp_valid_id;
225 u32 lu_gp_members;
226 atomic_t lu_gp_shutdown;
227 atomic_t lu_gp_ref_cnt;
228 spinlock_t lu_gp_lock;
229 struct config_group lu_gp_group;
230 struct list_head lu_gp_node;
231 struct list_head lu_gp_mem_list;
232} ____cacheline_aligned;
233
234struct t10_alua_lu_gp_member {
235 bool lu_gp_assoc;
236 atomic_t lu_gp_mem_ref_cnt;
237 spinlock_t lu_gp_mem_lock;
238 struct t10_alua_lu_gp *lu_gp;
239 struct se_device *lu_gp_mem_dev;
240 struct list_head lu_gp_mem_list;
241} ____cacheline_aligned;
242
243struct t10_alua_tg_pt_gp {
244 u16 tg_pt_gp_id;
245 int tg_pt_gp_valid_id;
246 int tg_pt_gp_alua_access_status;
247 int tg_pt_gp_alua_access_type;
248 int tg_pt_gp_nonop_delay_msecs;
249 int tg_pt_gp_trans_delay_msecs;
250 int tg_pt_gp_pref;
251 int tg_pt_gp_write_metadata;
252 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
253#define ALUA_MD_BUF_LEN 1024
254 u32 tg_pt_gp_md_buf_len;
255 u32 tg_pt_gp_members;
256 atomic_t tg_pt_gp_alua_access_state;
257 atomic_t tg_pt_gp_ref_cnt;
258 spinlock_t tg_pt_gp_lock;
259 struct mutex tg_pt_gp_md_mutex;
260 struct se_subsystem_dev *tg_pt_gp_su_dev;
261 struct config_group tg_pt_gp_group;
262 struct list_head tg_pt_gp_list;
263 struct list_head tg_pt_gp_mem_list;
264} ____cacheline_aligned;
265
266struct t10_alua_tg_pt_gp_member {
267 bool tg_pt_gp_assoc;
268 atomic_t tg_pt_gp_mem_ref_cnt;
269 spinlock_t tg_pt_gp_mem_lock;
270 struct t10_alua_tg_pt_gp *tg_pt_gp;
271 struct se_port *tg_pt;
272 struct list_head tg_pt_gp_mem_list;
273} ____cacheline_aligned;
274
275struct t10_vpd {
276 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
277 int protocol_identifier_set;
278 u32 protocol_identifier;
279 u32 device_identifier_code_set;
280 u32 association;
281 u32 device_identifier_type;
282 struct list_head vpd_list;
283} ____cacheline_aligned;
284
285struct t10_wwn {
286 char vendor[8];
287 char model[16];
288 char revision[4];
289 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
290 spinlock_t t10_vpd_lock;
291 struct se_subsystem_dev *t10_sub_dev;
292 struct config_group t10_wwn_group;
293 struct list_head t10_vpd_list;
294} ____cacheline_aligned;
295
296
297/*
298 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
299 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
300 * mode
301 */
302typedef enum {
303 SPC_PASSTHROUGH,
304 SPC2_RESERVATIONS,
305 SPC3_PERSISTENT_RESERVATIONS
306} t10_reservations_index_t;
307
308struct t10_pr_registration {
309 /* Used for fabrics that contain WWN+ISID */
310#define PR_REG_ISID_LEN 16
311 /* PR_REG_ISID_LEN + ',i,0x' */
312#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
313 char pr_reg_isid[PR_REG_ISID_LEN];
314 /* Used during APTPL metadata reading */
315#define PR_APTPL_MAX_IPORT_LEN 256
316 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
317 /* Used during APTPL metadata reading */
318#define PR_APTPL_MAX_TPORT_LEN 256
319 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
320 /* For writing out live meta data */
321 unsigned char *pr_aptpl_buf;
322 u16 pr_aptpl_rpti;
323 u16 pr_reg_tpgt;
324 /* Reservation effects all target ports */
325 int pr_reg_all_tg_pt;
326 /* Activate Persistence across Target Power Loss */
327 int pr_reg_aptpl;
328 int pr_res_holder;
329 int pr_res_type;
330 int pr_res_scope;
331 /* Used for fabric initiator WWPNs using a ISID */
332 bool isid_present_at_reg;
333 u32 pr_res_mapped_lun;
334 u32 pr_aptpl_target_lun;
335 u32 pr_res_generation;
336 u64 pr_reg_bin_isid;
337 u64 pr_res_key;
338 atomic_t pr_res_holders;
339 struct se_node_acl *pr_reg_nacl;
340 struct se_dev_entry *pr_reg_deve;
341 struct se_lun *pr_reg_tg_pt_lun;
342 struct list_head pr_reg_list;
343 struct list_head pr_reg_abort_list;
344 struct list_head pr_reg_aptpl_list;
345 struct list_head pr_reg_atp_list;
346 struct list_head pr_reg_atp_mem_list;
347} ____cacheline_aligned;
348
349/*
350 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
351 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
352 * core_setup_reservations()
353 */
354struct t10_reservation_ops {
355 int (*t10_reservation_check)(struct se_cmd *, u32 *);
356 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
357 int (*t10_pr_register)(struct se_cmd *);
358 int (*t10_pr_clear)(struct se_cmd *);
359};
360
361struct t10_reservation {
362 /* Reservation effects all target ports */
363 int pr_all_tg_pt;
364 /* Activate Persistence across Target Power Loss enabled
365 * for SCSI device */
366 int pr_aptpl_active;
367 /* Used by struct t10_reservation->pr_aptpl_buf_len */
368#define PR_APTPL_BUF_LEN 8192
369 u32 pr_aptpl_buf_len;
370 u32 pr_generation;
371 t10_reservations_index_t res_type;
372 spinlock_t registration_lock;
373 spinlock_t aptpl_reg_lock;
374 /*
375 * This will always be set by one individual I_T Nexus.
376 * However with all_tg_pt=1, other I_T Nexus from the
377 * same initiator can access PR reg/res info on a different
378 * target port.
379 *
380 * There is also the 'All Registrants' case, where there is
381 * a single *pr_res_holder of the reservation, but all
382 * registrations are considered reservation holders.
383 */
384 struct se_node_acl *pr_res_holder;
385 struct list_head registration_list;
386 struct list_head aptpl_reg_list;
387 struct t10_reservation_ops pr_ops;
388} ____cacheline_aligned;
389
390struct se_queue_req {
391 int state;
392 struct se_cmd *cmd;
393 struct list_head qr_list;
394} ____cacheline_aligned;
395
396struct se_queue_obj {
397 atomic_t queue_cnt;
398 spinlock_t cmd_queue_lock;
399 struct list_head qobj_list;
400 wait_queue_head_t thread_wq;
401} ____cacheline_aligned;
402
403struct se_task {
404 unsigned char task_sense;
405 struct scatterlist *task_sg;
406 u32 task_sg_nents;
407 struct scatterlist *task_sg_bidi;
408 u8 task_scsi_status;
409 u8 task_flags;
410 int task_error_status;
411 int task_state_flags;
412 bool task_padded_sg;
413 unsigned long long task_lba;
414 u32 task_no;
415 u32 task_sectors;
416 u32 task_size;
417 enum dma_data_direction task_data_direction;
418 struct se_cmd *task_se_cmd;
419 struct se_device *se_dev;
420 struct completion task_stop_comp;
421 atomic_t task_active;
422 atomic_t task_execute_queue;
423 atomic_t task_timeout;
424 atomic_t task_sent;
425 atomic_t task_stop;
426 atomic_t task_state_active;
427 struct timer_list task_timer;
428 struct se_device *se_obj_ptr;
429 struct list_head t_list;
430 struct list_head t_execute_list;
431 struct list_head t_state_list;
432} ____cacheline_aligned;
433
434struct se_cmd {
435 /* SAM response code being sent to initiator */
436 u8 scsi_status;
437 u8 scsi_asc;
438 u8 scsi_ascq;
439 u8 scsi_sense_reason;
440 u16 scsi_sense_length;
441 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
442 int alua_nonop_delay;
443 /* See include/linux/dma-mapping.h */
444 enum dma_data_direction data_direction;
445 /* For SAM Task Attribute */
446 int sam_task_attr;
447 /* Transport protocol dependent state, see transport_state_table */
448 enum transport_state_table t_state;
449 /* Transport protocol dependent state for out of order CmdSNs */
450 int deferred_t_state;
451 /* Transport specific error status */
452 int transport_error_status;
453 /* See se_cmd_flags_table */
454 u32 se_cmd_flags;
455 u32 se_ordered_id;
456 /* Total size in bytes associated with command */
457 u32 data_length;
458 /* SCSI Presented Data Transfer Length */
459 u32 cmd_spdtl;
460 u32 residual_count;
461 u32 orig_fe_lun;
462 /* Persistent Reservation key */
463 u64 pr_res_key;
464 atomic_t transport_sent;
465 /* Used for sense data */
466 void *sense_buffer;
467 struct list_head se_delayed_node;
468 struct list_head se_ordered_node;
469 struct list_head se_lun_node;
470 struct list_head se_qf_node;
471 struct se_device *se_dev;
472 struct se_dev_entry *se_deve;
473 struct se_device *se_obj_ptr;
474 struct se_device *se_orig_obj_ptr;
475 struct se_lun *se_lun;
476 /* Only used for internal passthrough and legacy TCM fabric modules */
477 struct se_session *se_sess;
478 struct se_tmr_req *se_tmr_req;
479 struct list_head se_queue_node;
480 struct target_core_fabric_ops *se_tfo;
481 int (*transport_emulate_cdb)(struct se_cmd *);
482 void (*transport_split_cdb)(unsigned long long, u32, unsigned char *);
483 void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
484 void (*transport_complete_callback)(struct se_cmd *);
485 int (*transport_qf_callback)(struct se_cmd *);
486
487 unsigned char *t_task_cdb;
488 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
489 unsigned long long t_task_lba;
490 int t_tasks_failed;
491 int t_tasks_fua;
492 bool t_tasks_bidi;
493 u32 t_tasks_sg_chained_no;
494 atomic_t t_fe_count;
495 atomic_t t_se_count;
496 atomic_t t_task_cdbs_left;
497 atomic_t t_task_cdbs_ex_left;
498 atomic_t t_task_cdbs_timeout_left;
499 atomic_t t_task_cdbs_sent;
500 atomic_t t_transport_aborted;
501 atomic_t t_transport_active;
502 atomic_t t_transport_complete;
503 atomic_t t_transport_queue_active;
504 atomic_t t_transport_sent;
505 atomic_t t_transport_stop;
506 atomic_t t_transport_timeout;
507 atomic_t transport_dev_active;
508 atomic_t transport_lun_active;
509 atomic_t transport_lun_fe_stop;
510 atomic_t transport_lun_stop;
511 spinlock_t t_state_lock;
512 struct completion t_transport_stop_comp;
513 struct completion transport_lun_fe_stop_comp;
514 struct completion transport_lun_stop_comp;
515 struct scatterlist *t_tasks_sg_chained;
516
517 /*
518 * Used for pre-registered fabric SGL passthrough WRITE and READ
519 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
520 * and other HW target mode fabric modules.
521 */
522 struct scatterlist *t_task_pt_sgl;
523 u32 t_task_pt_sgl_num;
524
525 struct scatterlist *t_data_sg;
526 unsigned int t_data_nents;
527 struct scatterlist *t_bidi_data_sg;
528 unsigned int t_bidi_data_nents;
529
530 /* Used for BIDI READ */
531 struct list_head t_task_list;
532 u32 t_task_list_num;
533
534} ____cacheline_aligned;
535
536struct se_tmr_req {
537 /* Task Management function to be preformed */
538 u8 function;
539 /* Task Management response to send */
540 u8 response;
541 int call_transport;
542 /* Reference to ITT that Task Mgmt should be preformed */
543 u32 ref_task_tag;
544 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
545 u64 ref_task_lun;
546 void *fabric_tmr_ptr;
547 struct se_cmd *task_cmd;
548 struct se_cmd *ref_cmd;
549 struct se_device *tmr_dev;
550 struct se_lun *tmr_lun;
551 struct list_head tmr_list;
552} ____cacheline_aligned;
553
554struct se_ua {
555 u8 ua_asc;
556 u8 ua_ascq;
557 struct se_node_acl *ua_nacl;
558 struct list_head ua_dev_list;
559 struct list_head ua_nacl_list;
560} ____cacheline_aligned;
561
562struct se_node_acl {
563 char initiatorname[TRANSPORT_IQN_LEN];
564 /* Used to signal demo mode created ACL, disabled by default */
565 bool dynamic_node_acl;
566 u32 queue_depth;
567 u32 acl_index;
568 u64 num_cmds;
569 u64 read_bytes;
570 u64 write_bytes;
571 spinlock_t stats_lock;
572 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
573 atomic_t acl_pr_ref_count;
574 struct se_dev_entry *device_list;
575 struct se_session *nacl_sess;
576 struct se_portal_group *se_tpg;
577 spinlock_t device_list_lock;
578 spinlock_t nacl_sess_lock;
579 struct config_group acl_group;
580 struct config_group acl_attrib_group;
581 struct config_group acl_auth_group;
582 struct config_group acl_param_group;
583 struct config_group acl_fabric_stat_group;
584 struct config_group *acl_default_groups[5];
585 struct list_head acl_list;
586 struct list_head acl_sess_list;
587} ____cacheline_aligned;
588
589struct se_session {
590 u64 sess_bin_isid;
591 struct se_node_acl *se_node_acl;
592 struct se_portal_group *se_tpg;
593 void *fabric_sess_ptr;
594 struct list_head sess_list;
595 struct list_head sess_acl_list;
596} ____cacheline_aligned;
597
598struct se_device;
599struct se_transform_info;
600struct scatterlist;
601
602struct se_ml_stat_grps {
603 struct config_group stat_group;
604 struct config_group scsi_auth_intr_group;
605 struct config_group scsi_att_intr_port_group;
606};
607
608struct se_lun_acl {
609 char initiatorname[TRANSPORT_IQN_LEN];
610 u32 mapped_lun;
611 struct se_node_acl *se_lun_nacl;
612 struct se_lun *se_lun;
613 struct list_head lacl_list;
614 struct config_group se_lun_group;
615 struct se_ml_stat_grps ml_stat_grps;
616} ____cacheline_aligned;
617
618struct se_dev_entry {
619 bool def_pr_registered;
620 /* See transport_lunflags_table */
621 u32 lun_flags;
622 u32 deve_cmds;
623 u32 mapped_lun;
624 u32 average_bytes;
625 u32 last_byte_count;
626 u32 total_cmds;
627 u32 total_bytes;
628 u64 pr_res_key;
629 u64 creation_time;
630 u32 attach_count;
631 u64 read_bytes;
632 u64 write_bytes;
633 atomic_t ua_count;
634 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
635 atomic_t pr_ref_count;
636 struct se_lun_acl *se_lun_acl;
637 spinlock_t ua_lock;
638 struct se_lun *se_lun;
639 struct list_head alua_port_list;
640 struct list_head ua_list;
641} ____cacheline_aligned;
642
643struct se_dev_limits {
644 /* Max supported HW queue depth */
645 u32 hw_queue_depth;
646 /* Max supported virtual queue depth */
647 u32 queue_depth;
648 /* From include/linux/blkdev.h for the other HW/SW limits. */
649 struct queue_limits limits;
650} ____cacheline_aligned;
651
652struct se_dev_attrib {
653 int emulate_dpo;
654 int emulate_fua_write;
655 int emulate_fua_read;
656 int emulate_write_cache;
657 int emulate_ua_intlck_ctrl;
658 int emulate_tas;
659 int emulate_tpu;
660 int emulate_tpws;
661 int emulate_reservations;
662 int emulate_alua;
663 int enforce_pr_isids;
664 int is_nonrot;
665 int emulate_rest_reord;
666 u32 hw_block_size;
667 u32 block_size;
668 u32 hw_max_sectors;
669 u32 max_sectors;
670 u32 optimal_sectors;
671 u32 hw_queue_depth;
672 u32 queue_depth;
673 u32 task_timeout;
674 u32 max_unmap_lba_count;
675 u32 max_unmap_block_desc_count;
676 u32 unmap_granularity;
677 u32 unmap_granularity_alignment;
678 struct se_subsystem_dev *da_sub_dev;
679 struct config_group da_group;
680} ____cacheline_aligned;
681
682struct se_dev_stat_grps {
683 struct config_group stat_group;
684 struct config_group scsi_dev_group;
685 struct config_group scsi_tgt_dev_group;
686 struct config_group scsi_lu_group;
687};
688
689struct se_subsystem_dev {
690/* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
691#define SE_DEV_ALIAS_LEN 512
692 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
693/* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
694#define SE_UDEV_PATH_LEN 512
695 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
696 u32 su_dev_flags;
697 struct se_hba *se_dev_hba;
698 struct se_device *se_dev_ptr;
699 struct se_dev_attrib se_dev_attrib;
700 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
701 struct t10_alua t10_alua;
702 /* T10 Inquiry and VPD WWN Information */
703 struct t10_wwn t10_wwn;
704 /* T10 SPC-2 + SPC-3 Reservations */
705 struct t10_reservation t10_pr;
706 spinlock_t se_dev_lock;
707 void *se_dev_su_ptr;
708 struct list_head se_dev_node;
709 struct config_group se_dev_group;
710 /* For T10 Reservations */
711 struct config_group se_dev_pr_group;
712 /* For target_core_stat.c groups */
713 struct se_dev_stat_grps dev_stat_grps;
714} ____cacheline_aligned;
715
716struct se_device {
717 /* Set to 1 if thread is NOT sleeping on thread_sem */
718 u8 thread_active;
719 u8 dev_status_timer_flags;
720 /* RELATIVE TARGET PORT IDENTIFER Counter */
721 u16 dev_rpti_counter;
722 /* Used for SAM Task Attribute ordering */
723 u32 dev_cur_ordered_id;
724 u32 dev_flags;
725 u32 dev_port_count;
726 /* See transport_device_status_table */
727 u32 dev_status;
728 u32 dev_tcq_window_closed;
729 /* Physical device queue depth */
730 u32 queue_depth;
731 /* Used for SPC-2 reservations enforce of ISIDs */
732 u64 dev_res_bin_isid;
733 t10_task_attr_index_t dev_task_attr_type;
734 /* Pointer to transport specific device structure */
735 void *dev_ptr;
736 u32 dev_index;
737 u64 creation_time;
738 u32 num_resets;
739 u64 num_cmds;
740 u64 read_bytes;
741 u64 write_bytes;
742 spinlock_t stats_lock;
743 /* Active commands on this virtual SE device */
744 atomic_t active_cmds;
745 atomic_t simple_cmds;
746 atomic_t depth_left;
747 atomic_t dev_ordered_id;
748 atomic_t dev_tur_active;
749 atomic_t execute_tasks;
750 atomic_t dev_status_thr_count;
751 atomic_t dev_hoq_count;
752 atomic_t dev_ordered_sync;
753 atomic_t dev_qf_count;
754 struct se_obj dev_obj;
755 struct se_obj dev_access_obj;
756 struct se_obj dev_export_obj;
757 struct se_queue_obj dev_queue_obj;
758 spinlock_t delayed_cmd_lock;
759 spinlock_t ordered_cmd_lock;
760 spinlock_t execute_task_lock;
761 spinlock_t state_task_lock;
762 spinlock_t dev_alua_lock;
763 spinlock_t dev_reservation_lock;
764 spinlock_t dev_state_lock;
765 spinlock_t dev_status_lock;
766 spinlock_t dev_status_thr_lock;
767 spinlock_t se_port_lock;
768 spinlock_t se_tmr_lock;
769 spinlock_t qf_cmd_lock;
770 /* Used for legacy SPC-2 reservationsa */
771 struct se_node_acl *dev_reserved_node_acl;
772 /* Used for ALUA Logical Unit Group membership */
773 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
774 /* Used for SPC-3 Persistent Reservations */
775 struct t10_pr_registration *dev_pr_res_holder;
776 struct list_head dev_sep_list;
777 struct list_head dev_tmr_list;
778 struct timer_list dev_status_timer;
779 /* Pointer to descriptor for processing thread */
780 struct task_struct *process_thread;
781 pid_t process_thread_pid;
782 struct task_struct *dev_mgmt_thread;
783 struct work_struct qf_work_queue;
784 struct list_head delayed_cmd_list;
785 struct list_head ordered_cmd_list;
786 struct list_head execute_task_list;
787 struct list_head state_task_list;
788 struct list_head qf_cmd_list;
789 /* Pointer to associated SE HBA */
790 struct se_hba *se_hba;
791 struct se_subsystem_dev *se_sub_dev;
792 /* Pointer to template of function pointers for transport */
793 struct se_subsystem_api *transport;
794 /* Linked list for struct se_hba struct se_device list */
795 struct list_head dev_list;
796 /* Linked list for struct se_global->g_se_dev_list */
797 struct list_head g_se_dev_list;
798} ____cacheline_aligned;
799
800struct se_hba {
801 u16 hba_tpgt;
802 u32 hba_id;
803 /* See hba_flags_table */
804 u32 hba_flags;
805 /* Virtual iSCSI devices attached. */
806 u32 dev_count;
807 u32 hba_index;
808 /* Pointer to transport specific host structure. */
809 void *hba_ptr;
810 /* Linked list for struct se_device */
811 struct list_head hba_dev_list;
812 struct list_head hba_node;
813 spinlock_t device_lock;
814 struct config_group hba_group;
815 struct mutex hba_access_mutex;
816 struct se_subsystem_api *transport;
817} ____cacheline_aligned;
818
819struct se_port_stat_grps {
820 struct config_group stat_group;
821 struct config_group scsi_port_group;
822 struct config_group scsi_tgt_port_group;
823 struct config_group scsi_transport_group;
824};
825
826struct se_lun {
827 /* See transport_lun_status_table */
828 enum transport_lun_status_table lun_status;
829 u32 lun_access;
830 u32 lun_flags;
831 u32 unpacked_lun;
832 atomic_t lun_acl_count;
833 spinlock_t lun_acl_lock;
834 spinlock_t lun_cmd_lock;
835 spinlock_t lun_sep_lock;
836 struct completion lun_shutdown_comp;
837 struct list_head lun_cmd_list;
838 struct list_head lun_acl_list;
839 struct se_device *lun_se_dev;
840 struct se_port *lun_sep;
841 struct config_group lun_group;
842 struct se_port_stat_grps port_stat_grps;
843} ____cacheline_aligned;
844
845struct scsi_port_stats {
846 u64 cmd_pdus;
847 u64 tx_data_octets;
848 u64 rx_data_octets;
849} ____cacheline_aligned;
850
851struct se_port {
852 /* RELATIVE TARGET PORT IDENTIFER */
853 u16 sep_rtpi;
854 int sep_tg_pt_secondary_stat;
855 int sep_tg_pt_secondary_write_md;
856 u32 sep_index;
857 struct scsi_port_stats sep_stats;
858 /* Used for ALUA Target Port Groups membership */
859 atomic_t sep_tg_pt_gp_active;
860 atomic_t sep_tg_pt_secondary_offline;
861 /* Used for PR ALL_TG_PT=1 */
862 atomic_t sep_tg_pt_ref_cnt;
863 spinlock_t sep_alua_lock;
864 struct mutex sep_tg_pt_md_mutex;
865 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
866 struct se_lun *sep_lun;
867 struct se_portal_group *sep_tpg;
868 struct list_head sep_alua_list;
869 struct list_head sep_list;
870} ____cacheline_aligned;
871
872struct se_tpg_np {
873 struct se_portal_group *tpg_np_parent;
874 struct config_group tpg_np_group;
875} ____cacheline_aligned;
876
877struct se_portal_group {
878 /* Type of target portal group, see transport_tpg_type_table */
879 enum transport_tpg_type_table se_tpg_type;
880 /* Number of ACLed Initiator Nodes for this TPG */
881 u32 num_node_acls;
882 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
883 atomic_t tpg_pr_ref_count;
884 /* Spinlock for adding/removing ACLed Nodes */
885 spinlock_t acl_node_lock;
886 /* Spinlock for adding/removing sessions */
887 spinlock_t session_lock;
888 spinlock_t tpg_lun_lock;
889 /* Pointer to $FABRIC_MOD portal group */
890 void *se_tpg_fabric_ptr;
891 struct list_head se_tpg_node;
892 /* linked list for initiator ACL list */
893 struct list_head acl_node_list;
894 struct se_lun *tpg_lun_list;
895 struct se_lun tpg_virt_lun0;
896 /* List of TCM sessions associated wth this TPG */
897 struct list_head tpg_sess_list;
898 /* Pointer to $FABRIC_MOD dependent code */
899 struct target_core_fabric_ops *se_tpg_tfo;
900 struct se_wwn *se_tpg_wwn;
901 struct config_group tpg_group;
902 struct config_group *tpg_default_groups[6];
903 struct config_group tpg_lun_group;
904 struct config_group tpg_np_group;
905 struct config_group tpg_acl_group;
906 struct config_group tpg_attrib_group;
907 struct config_group tpg_param_group;
908} ____cacheline_aligned;
909
910struct se_wwn {
911 struct target_fabric_configfs *wwn_tf;
912 struct config_group wwn_group;
913 struct config_group *wwn_default_groups[2];
914 struct config_group fabric_stat_group;
915} ____cacheline_aligned;
916
917#endif /* TARGET_CORE_BASE_H */
1#ifndef TARGET_CORE_BASE_H
2#define TARGET_CORE_BASE_H
3
4#include <linux/in.h>
5#include <linux/configfs.h>
6#include <linux/dma-mapping.h>
7#include <linux/blkdev.h>
8#include <scsi/scsi_cmnd.h>
9#include <net/sock.h>
10#include <net/tcp.h>
11
12#define TARGET_CORE_MOD_VERSION "v4.1.0-rc2-ml"
13#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
14
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
18/*
19 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
20 *
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.
25 *
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.
29 */
30#define TCM_MAX_COMMAND_SIZE 32
31/*
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)
34 */
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
57
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 */
62
63#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
64
65/*
66 * struct se_subsystem_dev->su_dev_flags
67*/
68#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
69#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
70#define SDF_USING_UDEV_PATH 0x00000004
71#define SDF_USING_ALIAS 0x00000008
72
73/*
74 * struct se_device->dev_flags
75 */
76#define DF_SPC2_RESERVATIONS 0x00000001
77#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
78
79/* struct se_dev_attrib sanity values */
80/* Default max_unmap_lba_count */
81#define DA_MAX_UNMAP_LBA_COUNT 0
82/* Default max_unmap_block_desc_count */
83#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
84/* Default unmap_granularity */
85#define DA_UNMAP_GRANULARITY_DEFAULT 0
86/* Default unmap_granularity_alignment */
87#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
88/* Default max transfer length */
89#define DA_FABRIC_MAX_SECTORS 8192
90/* Emulation for Direct Page Out */
91#define DA_EMULATE_DPO 0
92/* Emulation for Forced Unit Access WRITEs */
93#define DA_EMULATE_FUA_WRITE 1
94/* Emulation for Forced Unit Access READs */
95#define DA_EMULATE_FUA_READ 0
96/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
97#define DA_EMULATE_WRITE_CACHE 0
98/* Emulation for UNIT ATTENTION Interlock Control */
99#define DA_EMULATE_UA_INTLLCK_CTRL 0
100/* Emulation for TASK_ABORTED status (TAS) by default */
101#define DA_EMULATE_TAS 1
102/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
103#define DA_EMULATE_TPU 0
104/*
105 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
106 * block/blk-lib.c:blkdev_issue_discard()
107 */
108#define DA_EMULATE_TPWS 0
109/* No Emulation for PSCSI by default */
110#define DA_EMULATE_RESERVATIONS 0
111/* No Emulation for PSCSI by default */
112#define DA_EMULATE_ALUA 0
113/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
114#define DA_ENFORCE_PR_ISIDS 1
115#define DA_STATUS_MAX_SECTORS_MIN 16
116#define DA_STATUS_MAX_SECTORS_MAX 8192
117/* By default don't report non-rotating (solid state) medium */
118#define DA_IS_NONROT 0
119/* Queue Algorithm Modifier default for restricted reordering in control mode page */
120#define DA_EMULATE_REST_REORD 0
121
122#define SE_INQUIRY_BUF 512
123#define SE_MODE_PAGE_BUF 512
124
125/* struct se_hba->hba_flags */
126enum hba_flags_table {
127 HBA_FLAGS_INTERNAL_USE = 0x01,
128 HBA_FLAGS_PSCSI_MODE = 0x02,
129};
130
131/* struct se_lun->lun_status */
132enum transport_lun_status_table {
133 TRANSPORT_LUN_STATUS_FREE = 0,
134 TRANSPORT_LUN_STATUS_ACTIVE = 1,
135};
136
137/* struct se_portal_group->se_tpg_type */
138enum transport_tpg_type_table {
139 TRANSPORT_TPG_TYPE_NORMAL = 0,
140 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
141};
142
143/* Special transport agnostic struct se_cmd->t_states */
144enum transport_state_table {
145 TRANSPORT_NO_STATE = 0,
146 TRANSPORT_NEW_CMD = 1,
147 TRANSPORT_WRITE_PENDING = 3,
148 TRANSPORT_PROCESS_WRITE = 4,
149 TRANSPORT_PROCESSING = 5,
150 TRANSPORT_COMPLETE = 6,
151 TRANSPORT_PROCESS_TMR = 9,
152 TRANSPORT_ISTATE_PROCESSING = 11,
153 TRANSPORT_NEW_CMD_MAP = 16,
154 TRANSPORT_COMPLETE_QF_WP = 18,
155 TRANSPORT_COMPLETE_QF_OK = 19,
156};
157
158/* Used for struct se_cmd->se_cmd_flags */
159enum se_cmd_flags_table {
160 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
161 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
162 SCF_EMULATED_TASK_SENSE = 0x00000004,
163 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
164 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
165 SCF_SCSI_NON_DATA_CDB = 0x00000020,
166 SCF_SCSI_TMR_CDB = 0x00000040,
167 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
168 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
169 SCF_FUA = 0x00000200,
170 SCF_SE_LUN_CMD = 0x00000800,
171 SCF_SE_ALLOW_EOO = 0x00001000,
172 SCF_BIDI = 0x00002000,
173 SCF_SENT_CHECK_CONDITION = 0x00004000,
174 SCF_OVERFLOW_BIT = 0x00008000,
175 SCF_UNDERFLOW_BIT = 0x00010000,
176 SCF_SENT_DELAYED_TAS = 0x00020000,
177 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
178 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
179 SCF_UNUSED = 0x00100000,
180 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00200000,
181 SCF_ACK_KREF = 0x00400000,
182};
183
184/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
185enum transport_lunflags_table {
186 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
187 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
188 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
189 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
190};
191
192/* struct se_device->dev_status */
193enum transport_device_status_table {
194 TRANSPORT_DEVICE_ACTIVATED = 0x01,
195 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
196 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
197 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
198 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
199 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
200};
201
202/*
203 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
204 * to signal which ASC/ASCQ sense payload should be built.
205 */
206enum tcm_sense_reason_table {
207 TCM_NON_EXISTENT_LUN = 0x01,
208 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
209 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
210 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
211 TCM_SERVICE_CRC_ERROR = 0x05,
212 TCM_SNACK_REJECTED = 0x06,
213 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
214 TCM_INVALID_CDB_FIELD = 0x08,
215 TCM_INVALID_PARAMETER_LIST = 0x09,
216 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
217 TCM_UNKNOWN_MODE_PAGE = 0x0b,
218 TCM_WRITE_PROTECTED = 0x0c,
219 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
220 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
221 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
222 TCM_RESERVATION_CONFLICT = 0x10,
223 TCM_ADDRESS_OUT_OF_RANGE = 0x11,
224};
225
226enum target_sc_flags_table {
227 TARGET_SCF_BIDI_OP = 0x01,
228 TARGET_SCF_ACK_KREF = 0x02,
229 TARGET_SCF_UNKNOWN_SIZE = 0x04,
230};
231
232/* fabric independent task management function values */
233enum tcm_tmreq_table {
234 TMR_ABORT_TASK = 1,
235 TMR_ABORT_TASK_SET = 2,
236 TMR_CLEAR_ACA = 3,
237 TMR_CLEAR_TASK_SET = 4,
238 TMR_LUN_RESET = 5,
239 TMR_TARGET_WARM_RESET = 6,
240 TMR_TARGET_COLD_RESET = 7,
241 TMR_FABRIC_TMR = 255,
242};
243
244/* fabric independent task management response values */
245enum tcm_tmrsp_table {
246 TMR_FUNCTION_COMPLETE = 0,
247 TMR_TASK_DOES_NOT_EXIST = 1,
248 TMR_LUN_DOES_NOT_EXIST = 2,
249 TMR_TASK_STILL_ALLEGIANT = 3,
250 TMR_TASK_FAILOVER_NOT_SUPPORTED = 4,
251 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 5,
252 TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
253 TMR_FUNCTION_REJECTED = 255,
254};
255
256struct se_obj {
257 atomic_t obj_access_count;
258};
259
260/*
261 * Used by TCM Core internally to signal if ALUA emulation is enabled or
262 * disabled, or running in with TCM/pSCSI passthrough mode
263 */
264typedef enum {
265 SPC_ALUA_PASSTHROUGH,
266 SPC2_ALUA_DISABLED,
267 SPC3_ALUA_EMULATED
268} t10_alua_index_t;
269
270/*
271 * Used by TCM Core internally to signal if SAM Task Attribute emulation
272 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
273 */
274typedef enum {
275 SAM_TASK_ATTR_PASSTHROUGH,
276 SAM_TASK_ATTR_UNTAGGED,
277 SAM_TASK_ATTR_EMULATED
278} t10_task_attr_index_t;
279
280/*
281 * Used for target SCSI statistics
282 */
283typedef enum {
284 SCSI_INST_INDEX,
285 SCSI_DEVICE_INDEX,
286 SCSI_AUTH_INTR_INDEX,
287 SCSI_INDEX_TYPE_MAX
288} scsi_index_t;
289
290struct se_cmd;
291
292struct t10_alua {
293 t10_alua_index_t alua_type;
294 /* ALUA Target Port Group ID */
295 u16 alua_tg_pt_gps_counter;
296 u32 alua_tg_pt_gps_count;
297 spinlock_t tg_pt_gps_lock;
298 struct se_subsystem_dev *t10_sub_dev;
299 /* Used for default ALUA Target Port Group */
300 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
301 /* Used for default ALUA Target Port Group ConfigFS group */
302 struct config_group alua_tg_pt_gps_group;
303 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
304 struct list_head tg_pt_gps_list;
305};
306
307struct t10_alua_lu_gp {
308 u16 lu_gp_id;
309 int lu_gp_valid_id;
310 u32 lu_gp_members;
311 atomic_t lu_gp_ref_cnt;
312 spinlock_t lu_gp_lock;
313 struct config_group lu_gp_group;
314 struct list_head lu_gp_node;
315 struct list_head lu_gp_mem_list;
316};
317
318struct t10_alua_lu_gp_member {
319 bool lu_gp_assoc;
320 atomic_t lu_gp_mem_ref_cnt;
321 spinlock_t lu_gp_mem_lock;
322 struct t10_alua_lu_gp *lu_gp;
323 struct se_device *lu_gp_mem_dev;
324 struct list_head lu_gp_mem_list;
325};
326
327struct t10_alua_tg_pt_gp {
328 u16 tg_pt_gp_id;
329 int tg_pt_gp_valid_id;
330 int tg_pt_gp_alua_access_status;
331 int tg_pt_gp_alua_access_type;
332 int tg_pt_gp_nonop_delay_msecs;
333 int tg_pt_gp_trans_delay_msecs;
334 int tg_pt_gp_implict_trans_secs;
335 int tg_pt_gp_pref;
336 int tg_pt_gp_write_metadata;
337 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
338#define ALUA_MD_BUF_LEN 1024
339 u32 tg_pt_gp_md_buf_len;
340 u32 tg_pt_gp_members;
341 atomic_t tg_pt_gp_alua_access_state;
342 atomic_t tg_pt_gp_ref_cnt;
343 spinlock_t tg_pt_gp_lock;
344 struct mutex tg_pt_gp_md_mutex;
345 struct se_subsystem_dev *tg_pt_gp_su_dev;
346 struct config_group tg_pt_gp_group;
347 struct list_head tg_pt_gp_list;
348 struct list_head tg_pt_gp_mem_list;
349};
350
351struct t10_alua_tg_pt_gp_member {
352 bool tg_pt_gp_assoc;
353 atomic_t tg_pt_gp_mem_ref_cnt;
354 spinlock_t tg_pt_gp_mem_lock;
355 struct t10_alua_tg_pt_gp *tg_pt_gp;
356 struct se_port *tg_pt;
357 struct list_head tg_pt_gp_mem_list;
358};
359
360struct t10_vpd {
361 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
362 int protocol_identifier_set;
363 u32 protocol_identifier;
364 u32 device_identifier_code_set;
365 u32 association;
366 u32 device_identifier_type;
367 struct list_head vpd_list;
368};
369
370struct t10_wwn {
371 char vendor[8];
372 char model[16];
373 char revision[4];
374 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
375 spinlock_t t10_vpd_lock;
376 struct se_subsystem_dev *t10_sub_dev;
377 struct config_group t10_wwn_group;
378 struct list_head t10_vpd_list;
379};
380
381
382/*
383 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
384 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
385 * mode
386 */
387typedef enum {
388 SPC_PASSTHROUGH,
389 SPC2_RESERVATIONS,
390 SPC3_PERSISTENT_RESERVATIONS
391} t10_reservations_index_t;
392
393struct t10_pr_registration {
394 /* Used for fabrics that contain WWN+ISID */
395#define PR_REG_ISID_LEN 16
396 /* PR_REG_ISID_LEN + ',i,0x' */
397#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
398 char pr_reg_isid[PR_REG_ISID_LEN];
399 /* Used during APTPL metadata reading */
400#define PR_APTPL_MAX_IPORT_LEN 256
401 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
402 /* Used during APTPL metadata reading */
403#define PR_APTPL_MAX_TPORT_LEN 256
404 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
405 /* For writing out live meta data */
406 unsigned char *pr_aptpl_buf;
407 u16 pr_aptpl_rpti;
408 u16 pr_reg_tpgt;
409 /* Reservation effects all target ports */
410 int pr_reg_all_tg_pt;
411 /* Activate Persistence across Target Power Loss */
412 int pr_reg_aptpl;
413 int pr_res_holder;
414 int pr_res_type;
415 int pr_res_scope;
416 /* Used for fabric initiator WWPNs using a ISID */
417 bool isid_present_at_reg;
418 u32 pr_res_mapped_lun;
419 u32 pr_aptpl_target_lun;
420 u32 pr_res_generation;
421 u64 pr_reg_bin_isid;
422 u64 pr_res_key;
423 atomic_t pr_res_holders;
424 struct se_node_acl *pr_reg_nacl;
425 struct se_dev_entry *pr_reg_deve;
426 struct se_lun *pr_reg_tg_pt_lun;
427 struct list_head pr_reg_list;
428 struct list_head pr_reg_abort_list;
429 struct list_head pr_reg_aptpl_list;
430 struct list_head pr_reg_atp_list;
431 struct list_head pr_reg_atp_mem_list;
432};
433
434/*
435 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
436 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
437 * core_setup_reservations()
438 */
439struct t10_reservation_ops {
440 int (*t10_reservation_check)(struct se_cmd *, u32 *);
441 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
442 int (*t10_pr_register)(struct se_cmd *);
443 int (*t10_pr_clear)(struct se_cmd *);
444};
445
446struct t10_reservation {
447 /* Reservation effects all target ports */
448 int pr_all_tg_pt;
449 /* Activate Persistence across Target Power Loss enabled
450 * for SCSI device */
451 int pr_aptpl_active;
452 /* Used by struct t10_reservation->pr_aptpl_buf_len */
453#define PR_APTPL_BUF_LEN 8192
454 u32 pr_aptpl_buf_len;
455 u32 pr_generation;
456 t10_reservations_index_t res_type;
457 spinlock_t registration_lock;
458 spinlock_t aptpl_reg_lock;
459 /*
460 * This will always be set by one individual I_T Nexus.
461 * However with all_tg_pt=1, other I_T Nexus from the
462 * same initiator can access PR reg/res info on a different
463 * target port.
464 *
465 * There is also the 'All Registrants' case, where there is
466 * a single *pr_res_holder of the reservation, but all
467 * registrations are considered reservation holders.
468 */
469 struct se_node_acl *pr_res_holder;
470 struct list_head registration_list;
471 struct list_head aptpl_reg_list;
472 struct t10_reservation_ops pr_ops;
473};
474
475struct se_queue_obj {
476 atomic_t queue_cnt;
477 spinlock_t cmd_queue_lock;
478 struct list_head qobj_list;
479 wait_queue_head_t thread_wq;
480};
481
482struct se_tmr_req {
483 /* Task Management function to be performed */
484 u8 function;
485 /* Task Management response to send */
486 u8 response;
487 int call_transport;
488 /* Reference to ITT that Task Mgmt should be performed */
489 u32 ref_task_tag;
490 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
491 u64 ref_task_lun;
492 void *fabric_tmr_ptr;
493 struct se_cmd *task_cmd;
494 struct se_cmd *ref_cmd;
495 struct se_device *tmr_dev;
496 struct se_lun *tmr_lun;
497 struct list_head tmr_list;
498};
499
500struct se_cmd {
501 /* SAM response code being sent to initiator */
502 u8 scsi_status;
503 u8 scsi_asc;
504 u8 scsi_ascq;
505 u8 scsi_sense_reason;
506 u16 scsi_sense_length;
507 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
508 int alua_nonop_delay;
509 /* See include/linux/dma-mapping.h */
510 enum dma_data_direction data_direction;
511 /* For SAM Task Attribute */
512 int sam_task_attr;
513 /* Transport protocol dependent state, see transport_state_table */
514 enum transport_state_table t_state;
515 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
516 unsigned check_release:1;
517 unsigned cmd_wait_set:1;
518 unsigned unknown_data_length:1;
519 /* See se_cmd_flags_table */
520 u32 se_cmd_flags;
521 u32 se_ordered_id;
522 /* Total size in bytes associated with command */
523 u32 data_length;
524 /* SCSI Presented Data Transfer Length */
525 u32 cmd_spdtl;
526 u32 residual_count;
527 u32 orig_fe_lun;
528 /* Persistent Reservation key */
529 u64 pr_res_key;
530 /* Used for sense data */
531 void *sense_buffer;
532 struct list_head se_delayed_node;
533 struct list_head se_lun_node;
534 struct list_head se_qf_node;
535 struct se_device *se_dev;
536 struct se_dev_entry *se_deve;
537 struct se_lun *se_lun;
538 /* Only used for internal passthrough and legacy TCM fabric modules */
539 struct se_session *se_sess;
540 struct se_tmr_req *se_tmr_req;
541 struct list_head se_queue_node;
542 struct list_head se_cmd_list;
543 struct completion cmd_wait_comp;
544 struct kref cmd_kref;
545 struct target_core_fabric_ops *se_tfo;
546 int (*execute_cmd)(struct se_cmd *);
547 void (*transport_complete_callback)(struct se_cmd *);
548
549 unsigned char *t_task_cdb;
550 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
551 unsigned long long t_task_lba;
552 atomic_t t_fe_count;
553 unsigned int transport_state;
554#define CMD_T_ABORTED (1 << 0)
555#define CMD_T_ACTIVE (1 << 1)
556#define CMD_T_COMPLETE (1 << 2)
557#define CMD_T_QUEUED (1 << 3)
558#define CMD_T_SENT (1 << 4)
559#define CMD_T_STOP (1 << 5)
560#define CMD_T_FAILED (1 << 6)
561#define CMD_T_LUN_STOP (1 << 7)
562#define CMD_T_LUN_FE_STOP (1 << 8)
563#define CMD_T_DEV_ACTIVE (1 << 9)
564#define CMD_T_REQUEST_STOP (1 << 10)
565#define CMD_T_BUSY (1 << 11)
566 spinlock_t t_state_lock;
567 struct completion t_transport_stop_comp;
568 struct completion transport_lun_fe_stop_comp;
569 struct completion transport_lun_stop_comp;
570
571 struct work_struct work;
572
573 struct scatterlist *t_data_sg;
574 unsigned int t_data_nents;
575 void *t_data_vmap;
576 struct scatterlist *t_bidi_data_sg;
577 unsigned int t_bidi_data_nents;
578
579 struct list_head execute_list;
580 struct list_head state_list;
581 bool state_active;
582
583 /* old task stop completion, consider merging with some of the above */
584 struct completion task_stop_comp;
585
586 /* backend private data */
587 void *priv;
588};
589
590struct se_ua {
591 u8 ua_asc;
592 u8 ua_ascq;
593 struct se_node_acl *ua_nacl;
594 struct list_head ua_dev_list;
595 struct list_head ua_nacl_list;
596};
597
598struct se_node_acl {
599 char initiatorname[TRANSPORT_IQN_LEN];
600 /* Used to signal demo mode created ACL, disabled by default */
601 bool dynamic_node_acl;
602 bool acl_stop:1;
603 u32 queue_depth;
604 u32 acl_index;
605 u64 num_cmds;
606 u64 read_bytes;
607 u64 write_bytes;
608 spinlock_t stats_lock;
609 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
610 atomic_t acl_pr_ref_count;
611 struct se_dev_entry **device_list;
612 struct se_session *nacl_sess;
613 struct se_portal_group *se_tpg;
614 spinlock_t device_list_lock;
615 spinlock_t nacl_sess_lock;
616 struct config_group acl_group;
617 struct config_group acl_attrib_group;
618 struct config_group acl_auth_group;
619 struct config_group acl_param_group;
620 struct config_group acl_fabric_stat_group;
621 struct config_group *acl_default_groups[5];
622 struct list_head acl_list;
623 struct list_head acl_sess_list;
624 struct completion acl_free_comp;
625 struct kref acl_kref;
626};
627
628struct se_session {
629 unsigned sess_tearing_down:1;
630 u64 sess_bin_isid;
631 struct se_node_acl *se_node_acl;
632 struct se_portal_group *se_tpg;
633 void *fabric_sess_ptr;
634 struct list_head sess_list;
635 struct list_head sess_acl_list;
636 struct list_head sess_cmd_list;
637 struct list_head sess_wait_list;
638 spinlock_t sess_cmd_lock;
639 struct kref sess_kref;
640};
641
642struct se_device;
643struct se_transform_info;
644struct scatterlist;
645
646struct se_ml_stat_grps {
647 struct config_group stat_group;
648 struct config_group scsi_auth_intr_group;
649 struct config_group scsi_att_intr_port_group;
650};
651
652struct se_lun_acl {
653 char initiatorname[TRANSPORT_IQN_LEN];
654 u32 mapped_lun;
655 struct se_node_acl *se_lun_nacl;
656 struct se_lun *se_lun;
657 struct list_head lacl_list;
658 struct config_group se_lun_group;
659 struct se_ml_stat_grps ml_stat_grps;
660};
661
662struct se_dev_entry {
663 bool def_pr_registered;
664 /* See transport_lunflags_table */
665 u32 lun_flags;
666 u32 deve_cmds;
667 u32 mapped_lun;
668 u32 average_bytes;
669 u32 last_byte_count;
670 u32 total_cmds;
671 u32 total_bytes;
672 u64 pr_res_key;
673 u64 creation_time;
674 u32 attach_count;
675 u64 read_bytes;
676 u64 write_bytes;
677 atomic_t ua_count;
678 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
679 atomic_t pr_ref_count;
680 struct se_lun_acl *se_lun_acl;
681 spinlock_t ua_lock;
682 struct se_lun *se_lun;
683 struct list_head alua_port_list;
684 struct list_head ua_list;
685};
686
687struct se_dev_limits {
688 /* Max supported HW queue depth */
689 u32 hw_queue_depth;
690 /* Max supported virtual queue depth */
691 u32 queue_depth;
692 /* From include/linux/blkdev.h for the other HW/SW limits. */
693 struct queue_limits limits;
694};
695
696struct se_dev_attrib {
697 int emulate_dpo;
698 int emulate_fua_write;
699 int emulate_fua_read;
700 int emulate_write_cache;
701 int emulate_ua_intlck_ctrl;
702 int emulate_tas;
703 int emulate_tpu;
704 int emulate_tpws;
705 int emulate_reservations;
706 int emulate_alua;
707 int enforce_pr_isids;
708 int is_nonrot;
709 int emulate_rest_reord;
710 u32 hw_block_size;
711 u32 block_size;
712 u32 hw_max_sectors;
713 u32 fabric_max_sectors;
714 u32 optimal_sectors;
715 u32 hw_queue_depth;
716 u32 queue_depth;
717 u32 max_unmap_lba_count;
718 u32 max_unmap_block_desc_count;
719 u32 unmap_granularity;
720 u32 unmap_granularity_alignment;
721 struct se_subsystem_dev *da_sub_dev;
722 struct config_group da_group;
723};
724
725struct se_dev_stat_grps {
726 struct config_group stat_group;
727 struct config_group scsi_dev_group;
728 struct config_group scsi_tgt_dev_group;
729 struct config_group scsi_lu_group;
730};
731
732struct se_subsystem_dev {
733/* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
734#define SE_DEV_ALIAS_LEN 512
735 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
736/* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
737#define SE_UDEV_PATH_LEN 512
738 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
739 u32 su_dev_flags;
740 struct se_hba *se_dev_hba;
741 struct se_device *se_dev_ptr;
742 struct se_dev_attrib se_dev_attrib;
743 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
744 struct t10_alua t10_alua;
745 /* T10 Inquiry and VPD WWN Information */
746 struct t10_wwn t10_wwn;
747 /* T10 SPC-2 + SPC-3 Reservations */
748 struct t10_reservation t10_pr;
749 spinlock_t se_dev_lock;
750 void *se_dev_su_ptr;
751 struct config_group se_dev_group;
752 /* For T10 Reservations */
753 struct config_group se_dev_pr_group;
754 /* For target_core_stat.c groups */
755 struct se_dev_stat_grps dev_stat_grps;
756};
757
758struct se_device {
759 /* RELATIVE TARGET PORT IDENTIFER Counter */
760 u16 dev_rpti_counter;
761 /* Used for SAM Task Attribute ordering */
762 u32 dev_cur_ordered_id;
763 u32 dev_flags;
764 u32 dev_port_count;
765 /* See transport_device_status_table */
766 u32 dev_status;
767 /* Physical device queue depth */
768 u32 queue_depth;
769 /* Used for SPC-2 reservations enforce of ISIDs */
770 u64 dev_res_bin_isid;
771 t10_task_attr_index_t dev_task_attr_type;
772 /* Pointer to transport specific device structure */
773 void *dev_ptr;
774 u32 dev_index;
775 u64 creation_time;
776 u32 num_resets;
777 u64 num_cmds;
778 u64 read_bytes;
779 u64 write_bytes;
780 spinlock_t stats_lock;
781 /* Active commands on this virtual SE device */
782 atomic_t simple_cmds;
783 atomic_t dev_ordered_id;
784 atomic_t execute_tasks;
785 atomic_t dev_ordered_sync;
786 atomic_t dev_qf_count;
787 struct se_obj dev_obj;
788 struct se_obj dev_access_obj;
789 struct se_obj dev_export_obj;
790 struct se_queue_obj dev_queue_obj;
791 spinlock_t delayed_cmd_lock;
792 spinlock_t execute_task_lock;
793 spinlock_t dev_reservation_lock;
794 spinlock_t dev_status_lock;
795 spinlock_t se_port_lock;
796 spinlock_t se_tmr_lock;
797 spinlock_t qf_cmd_lock;
798 /* Used for legacy SPC-2 reservationsa */
799 struct se_node_acl *dev_reserved_node_acl;
800 /* Used for ALUA Logical Unit Group membership */
801 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
802 /* Used for SPC-3 Persistent Reservations */
803 struct t10_pr_registration *dev_pr_res_holder;
804 struct list_head dev_sep_list;
805 struct list_head dev_tmr_list;
806 /* Pointer to descriptor for processing thread */
807 struct task_struct *process_thread;
808 struct work_struct qf_work_queue;
809 struct list_head delayed_cmd_list;
810 struct list_head execute_list;
811 struct list_head state_list;
812 struct list_head qf_cmd_list;
813 /* Pointer to associated SE HBA */
814 struct se_hba *se_hba;
815 struct se_subsystem_dev *se_sub_dev;
816 /* Pointer to template of function pointers for transport */
817 struct se_subsystem_api *transport;
818 /* Linked list for struct se_hba struct se_device list */
819 struct list_head dev_list;
820};
821
822struct se_hba {
823 u16 hba_tpgt;
824 u32 hba_id;
825 /* See hba_flags_table */
826 u32 hba_flags;
827 /* Virtual iSCSI devices attached. */
828 u32 dev_count;
829 u32 hba_index;
830 /* Pointer to transport specific host structure. */
831 void *hba_ptr;
832 /* Linked list for struct se_device */
833 struct list_head hba_dev_list;
834 struct list_head hba_node;
835 spinlock_t device_lock;
836 struct config_group hba_group;
837 struct mutex hba_access_mutex;
838 struct se_subsystem_api *transport;
839};
840
841struct se_port_stat_grps {
842 struct config_group stat_group;
843 struct config_group scsi_port_group;
844 struct config_group scsi_tgt_port_group;
845 struct config_group scsi_transport_group;
846};
847
848struct se_lun {
849 /* See transport_lun_status_table */
850 enum transport_lun_status_table lun_status;
851 u32 lun_access;
852 u32 lun_flags;
853 u32 unpacked_lun;
854 atomic_t lun_acl_count;
855 spinlock_t lun_acl_lock;
856 spinlock_t lun_cmd_lock;
857 spinlock_t lun_sep_lock;
858 struct completion lun_shutdown_comp;
859 struct list_head lun_cmd_list;
860 struct list_head lun_acl_list;
861 struct se_device *lun_se_dev;
862 struct se_port *lun_sep;
863 struct config_group lun_group;
864 struct se_port_stat_grps port_stat_grps;
865};
866
867struct scsi_port_stats {
868 u64 cmd_pdus;
869 u64 tx_data_octets;
870 u64 rx_data_octets;
871};
872
873struct se_port {
874 /* RELATIVE TARGET PORT IDENTIFER */
875 u16 sep_rtpi;
876 int sep_tg_pt_secondary_stat;
877 int sep_tg_pt_secondary_write_md;
878 u32 sep_index;
879 struct scsi_port_stats sep_stats;
880 /* Used for ALUA Target Port Groups membership */
881 atomic_t sep_tg_pt_secondary_offline;
882 /* Used for PR ALL_TG_PT=1 */
883 atomic_t sep_tg_pt_ref_cnt;
884 spinlock_t sep_alua_lock;
885 struct mutex sep_tg_pt_md_mutex;
886 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
887 struct se_lun *sep_lun;
888 struct se_portal_group *sep_tpg;
889 struct list_head sep_alua_list;
890 struct list_head sep_list;
891};
892
893struct se_tpg_np {
894 struct se_portal_group *tpg_np_parent;
895 struct config_group tpg_np_group;
896};
897
898struct se_portal_group {
899 /* Type of target portal group, see transport_tpg_type_table */
900 enum transport_tpg_type_table se_tpg_type;
901 /* Number of ACLed Initiator Nodes for this TPG */
902 u32 num_node_acls;
903 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
904 atomic_t tpg_pr_ref_count;
905 /* Spinlock for adding/removing ACLed Nodes */
906 spinlock_t acl_node_lock;
907 /* Spinlock for adding/removing sessions */
908 spinlock_t session_lock;
909 spinlock_t tpg_lun_lock;
910 /* Pointer to $FABRIC_MOD portal group */
911 void *se_tpg_fabric_ptr;
912 struct list_head se_tpg_node;
913 /* linked list for initiator ACL list */
914 struct list_head acl_node_list;
915 struct se_lun **tpg_lun_list;
916 struct se_lun tpg_virt_lun0;
917 /* List of TCM sessions associated wth this TPG */
918 struct list_head tpg_sess_list;
919 /* Pointer to $FABRIC_MOD dependent code */
920 struct target_core_fabric_ops *se_tpg_tfo;
921 struct se_wwn *se_tpg_wwn;
922 struct config_group tpg_group;
923 struct config_group *tpg_default_groups[6];
924 struct config_group tpg_lun_group;
925 struct config_group tpg_np_group;
926 struct config_group tpg_acl_group;
927 struct config_group tpg_attrib_group;
928 struct config_group tpg_param_group;
929};
930
931struct se_wwn {
932 struct target_fabric_configfs *wwn_tf;
933 struct config_group wwn_group;
934 struct config_group *wwn_default_groups[2];
935 struct config_group fabric_stat_group;
936};
937
938#endif /* TARGET_CORE_BASE_H */