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target: remove TF_TIMER_STOP
[deliverable/linux.git] / include / target / 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-rc1-ml"
13
14 /* Maximum Number of LUNs per Target Portal Group */
15 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
16 #define TRANSPORT_MAX_LUNS_PER_TPG 256
17 /*
18 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
19 *
20 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
21 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
22 * 16-byte CDBs by default and require an extra allocation for
23 * 32-byte CDBs to because of legacy issues.
24 *
25 * Within TCM Core there are no such legacy limitiations, so we go ahead
26 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
27 * within all TCM Core and subsystem plugin code.
28 */
29 #define TCM_MAX_COMMAND_SIZE 32
30 /*
31 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
32 * defined 96, but the real limit is 252 (or 260 including the header)
33 */
34 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
35 /* Used by transport_send_check_condition_and_sense() */
36 #define SPC_SENSE_KEY_OFFSET 2
37 #define SPC_ASC_KEY_OFFSET 12
38 #define SPC_ASCQ_KEY_OFFSET 13
39 #define TRANSPORT_IQN_LEN 224
40 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
41 #define LU_GROUP_NAME_BUF 256
42 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
43 #define TG_PT_GROUP_NAME_BUF 256
44 /* Used to parse VPD into struct t10_vpd */
45 #define VPD_TMP_BUF_SIZE 128
46 /* Used by transport_generic_cmd_sequencer() */
47 #define READ_BLOCK_LEN 6
48 #define READ_CAP_LEN 8
49 #define READ_POSITION_LEN 20
50 #define INQUIRY_LEN 36
51 /* Used by transport_get_inquiry_vpd_serial() */
52 #define INQUIRY_VPD_SERIAL_LEN 254
53 /* Used by transport_get_inquiry_vpd_device_ident() */
54 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
55
56 /* struct se_hba->hba_flags */
57 enum hba_flags_table {
58 HBA_FLAGS_INTERNAL_USE = 0x01,
59 HBA_FLAGS_PSCSI_MODE = 0x02,
60 };
61
62 /* struct se_lun->lun_status */
63 enum transport_lun_status_table {
64 TRANSPORT_LUN_STATUS_FREE = 0,
65 TRANSPORT_LUN_STATUS_ACTIVE = 1,
66 };
67
68 /* struct se_portal_group->se_tpg_type */
69 enum transport_tpg_type_table {
70 TRANSPORT_TPG_TYPE_NORMAL = 0,
71 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
72 };
73
74 /* Used for generate timer flags */
75 enum se_task_flags {
76 TF_ACTIVE = (1 << 0),
77 TF_SENT = (1 << 1),
78 TF_TIMEOUT = (1 << 2),
79 TF_REQUEST_STOP = (1 << 3),
80 TF_TIMER_RUNNING = (1 << 4),
81 };
82
83 /* Special transport agnostic struct se_cmd->t_states */
84 enum 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 TRANSPORT_COMPLETE_QF_OK = 19,
105 };
106
107 /* Used for struct se_cmd->se_cmd_flags */
108 enum se_cmd_flags_table {
109 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
110 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
111 SCF_EMULATED_TASK_SENSE = 0x00000004,
112 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
113 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
114 SCF_SCSI_NON_DATA_CDB = 0x00000040,
115 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
116 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
117 SCF_SE_CMD_FAILED = 0x00000400,
118 SCF_SE_LUN_CMD = 0x00000800,
119 SCF_SE_ALLOW_EOO = 0x00001000,
120 SCF_SENT_CHECK_CONDITION = 0x00004000,
121 SCF_OVERFLOW_BIT = 0x00008000,
122 SCF_UNDERFLOW_BIT = 0x00010000,
123 SCF_SENT_DELAYED_TAS = 0x00020000,
124 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
125 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
126 SCF_UNUSED = 0x00100000,
127 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
128 SCF_EMULATE_CDB_ASYNC = 0x01000000,
129 };
130
131 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
132 enum 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 */
140 enum 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 */
153 enum 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
171 struct 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 */
179 typedef 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 */
189 typedef 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 */
198 typedef enum {
199 SCSI_INST_INDEX,
200 SCSI_DEVICE_INDEX,
201 SCSI_AUTH_INTR_INDEX,
202 SCSI_INDEX_TYPE_MAX
203 } scsi_index_t;
204
205 struct se_cmd;
206
207 struct 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
222 struct 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
234 struct 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
243 struct 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
266 struct 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
275 struct 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
285 struct 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 */
302 typedef enum {
303 SPC_PASSTHROUGH,
304 SPC2_RESERVATIONS,
305 SPC3_PERSISTENT_RESERVATIONS
306 } t10_reservations_index_t;
307
308 struct 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 */
354 struct 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
361 struct 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
390 struct se_queue_req {
391 int state;
392 struct se_cmd *cmd;
393 struct list_head qr_list;
394 } ____cacheline_aligned;
395
396 struct 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
403 struct se_task {
404 unsigned long long task_lba;
405 u32 task_sectors;
406 u32 task_size;
407 struct se_cmd *task_se_cmd;
408 struct scatterlist *task_sg;
409 struct scatterlist *task_sg_bidi;
410 u32 task_sg_nents;
411 u16 task_flags;
412 u8 task_sense;
413 u8 task_scsi_status;
414 int task_error_status;
415 enum dma_data_direction task_data_direction;
416 atomic_t task_state_active;
417 struct timer_list task_timer;
418 struct list_head t_list;
419 struct list_head t_execute_list;
420 struct list_head t_state_list;
421 struct completion task_stop_comp;
422 } ____cacheline_aligned;
423
424 struct se_cmd {
425 /* SAM response code being sent to initiator */
426 u8 scsi_status;
427 u8 scsi_asc;
428 u8 scsi_ascq;
429 u8 scsi_sense_reason;
430 u16 scsi_sense_length;
431 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
432 int alua_nonop_delay;
433 /* See include/linux/dma-mapping.h */
434 enum dma_data_direction data_direction;
435 /* For SAM Task Attribute */
436 int sam_task_attr;
437 /* Transport protocol dependent state, see transport_state_table */
438 enum transport_state_table t_state;
439 /* Transport protocol dependent state for out of order CmdSNs */
440 int deferred_t_state;
441 /* Transport specific error status */
442 int transport_error_status;
443 /* See se_cmd_flags_table */
444 u32 se_cmd_flags;
445 u32 se_ordered_id;
446 /* Total size in bytes associated with command */
447 u32 data_length;
448 /* SCSI Presented Data Transfer Length */
449 u32 cmd_spdtl;
450 u32 residual_count;
451 u32 orig_fe_lun;
452 /* Persistent Reservation key */
453 u64 pr_res_key;
454 atomic_t transport_sent;
455 /* Used for sense data */
456 void *sense_buffer;
457 struct list_head se_delayed_node;
458 struct list_head se_ordered_node;
459 struct list_head se_lun_node;
460 struct list_head se_qf_node;
461 struct se_device *se_dev;
462 struct se_dev_entry *se_deve;
463 struct se_device *se_obj_ptr;
464 struct se_device *se_orig_obj_ptr;
465 struct se_lun *se_lun;
466 /* Only used for internal passthrough and legacy TCM fabric modules */
467 struct se_session *se_sess;
468 struct se_tmr_req *se_tmr_req;
469 struct list_head se_queue_node;
470 struct target_core_fabric_ops *se_tfo;
471 int (*transport_emulate_cdb)(struct se_cmd *);
472 void (*transport_complete_callback)(struct se_cmd *);
473
474 unsigned char *t_task_cdb;
475 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
476 unsigned long long t_task_lba;
477 int t_tasks_failed;
478 int t_tasks_fua;
479 bool t_tasks_bidi;
480 u32 t_tasks_sg_chained_no;
481 atomic_t t_fe_count;
482 atomic_t t_se_count;
483 atomic_t t_task_cdbs_left;
484 atomic_t t_task_cdbs_ex_left;
485 atomic_t t_task_cdbs_timeout_left;
486 atomic_t t_task_cdbs_sent;
487 atomic_t t_transport_aborted;
488 atomic_t t_transport_active;
489 atomic_t t_transport_complete;
490 atomic_t t_transport_queue_active;
491 atomic_t t_transport_sent;
492 atomic_t t_transport_stop;
493 atomic_t t_transport_timeout;
494 atomic_t transport_dev_active;
495 atomic_t transport_lun_active;
496 atomic_t transport_lun_fe_stop;
497 atomic_t transport_lun_stop;
498 spinlock_t t_state_lock;
499 struct completion t_transport_stop_comp;
500 struct completion transport_lun_fe_stop_comp;
501 struct completion transport_lun_stop_comp;
502 struct scatterlist *t_tasks_sg_chained;
503
504 /*
505 * Used for pre-registered fabric SGL passthrough WRITE and READ
506 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
507 * and other HW target mode fabric modules.
508 */
509 struct scatterlist *t_task_pt_sgl;
510 u32 t_task_pt_sgl_num;
511
512 struct scatterlist *t_data_sg;
513 unsigned int t_data_nents;
514 struct scatterlist *t_bidi_data_sg;
515 unsigned int t_bidi_data_nents;
516
517 /* Used for BIDI READ */
518 struct list_head t_task_list;
519 u32 t_task_list_num;
520
521 } ____cacheline_aligned;
522
523 struct se_tmr_req {
524 /* Task Management function to be preformed */
525 u8 function;
526 /* Task Management response to send */
527 u8 response;
528 int call_transport;
529 /* Reference to ITT that Task Mgmt should be preformed */
530 u32 ref_task_tag;
531 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
532 u64 ref_task_lun;
533 void *fabric_tmr_ptr;
534 struct se_cmd *task_cmd;
535 struct se_cmd *ref_cmd;
536 struct se_device *tmr_dev;
537 struct se_lun *tmr_lun;
538 struct list_head tmr_list;
539 } ____cacheline_aligned;
540
541 struct se_ua {
542 u8 ua_asc;
543 u8 ua_ascq;
544 struct se_node_acl *ua_nacl;
545 struct list_head ua_dev_list;
546 struct list_head ua_nacl_list;
547 } ____cacheline_aligned;
548
549 struct se_node_acl {
550 char initiatorname[TRANSPORT_IQN_LEN];
551 /* Used to signal demo mode created ACL, disabled by default */
552 bool dynamic_node_acl;
553 u32 queue_depth;
554 u32 acl_index;
555 u64 num_cmds;
556 u64 read_bytes;
557 u64 write_bytes;
558 spinlock_t stats_lock;
559 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
560 atomic_t acl_pr_ref_count;
561 struct se_dev_entry *device_list;
562 struct se_session *nacl_sess;
563 struct se_portal_group *se_tpg;
564 spinlock_t device_list_lock;
565 spinlock_t nacl_sess_lock;
566 struct config_group acl_group;
567 struct config_group acl_attrib_group;
568 struct config_group acl_auth_group;
569 struct config_group acl_param_group;
570 struct config_group acl_fabric_stat_group;
571 struct config_group *acl_default_groups[5];
572 struct list_head acl_list;
573 struct list_head acl_sess_list;
574 } ____cacheline_aligned;
575
576 struct se_session {
577 u64 sess_bin_isid;
578 struct se_node_acl *se_node_acl;
579 struct se_portal_group *se_tpg;
580 void *fabric_sess_ptr;
581 struct list_head sess_list;
582 struct list_head sess_acl_list;
583 } ____cacheline_aligned;
584
585 struct se_device;
586 struct se_transform_info;
587 struct scatterlist;
588
589 struct se_ml_stat_grps {
590 struct config_group stat_group;
591 struct config_group scsi_auth_intr_group;
592 struct config_group scsi_att_intr_port_group;
593 };
594
595 struct se_lun_acl {
596 char initiatorname[TRANSPORT_IQN_LEN];
597 u32 mapped_lun;
598 struct se_node_acl *se_lun_nacl;
599 struct se_lun *se_lun;
600 struct list_head lacl_list;
601 struct config_group se_lun_group;
602 struct se_ml_stat_grps ml_stat_grps;
603 } ____cacheline_aligned;
604
605 struct se_dev_entry {
606 bool def_pr_registered;
607 /* See transport_lunflags_table */
608 u32 lun_flags;
609 u32 deve_cmds;
610 u32 mapped_lun;
611 u32 average_bytes;
612 u32 last_byte_count;
613 u32 total_cmds;
614 u32 total_bytes;
615 u64 pr_res_key;
616 u64 creation_time;
617 u32 attach_count;
618 u64 read_bytes;
619 u64 write_bytes;
620 atomic_t ua_count;
621 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
622 atomic_t pr_ref_count;
623 struct se_lun_acl *se_lun_acl;
624 spinlock_t ua_lock;
625 struct se_lun *se_lun;
626 struct list_head alua_port_list;
627 struct list_head ua_list;
628 } ____cacheline_aligned;
629
630 struct se_dev_limits {
631 /* Max supported HW queue depth */
632 u32 hw_queue_depth;
633 /* Max supported virtual queue depth */
634 u32 queue_depth;
635 /* From include/linux/blkdev.h for the other HW/SW limits. */
636 struct queue_limits limits;
637 } ____cacheline_aligned;
638
639 struct se_dev_attrib {
640 int emulate_dpo;
641 int emulate_fua_write;
642 int emulate_fua_read;
643 int emulate_write_cache;
644 int emulate_ua_intlck_ctrl;
645 int emulate_tas;
646 int emulate_tpu;
647 int emulate_tpws;
648 int emulate_reservations;
649 int emulate_alua;
650 int enforce_pr_isids;
651 int is_nonrot;
652 int emulate_rest_reord;
653 u32 hw_block_size;
654 u32 block_size;
655 u32 hw_max_sectors;
656 u32 max_sectors;
657 u32 optimal_sectors;
658 u32 hw_queue_depth;
659 u32 queue_depth;
660 u32 task_timeout;
661 u32 max_unmap_lba_count;
662 u32 max_unmap_block_desc_count;
663 u32 unmap_granularity;
664 u32 unmap_granularity_alignment;
665 struct se_subsystem_dev *da_sub_dev;
666 struct config_group da_group;
667 } ____cacheline_aligned;
668
669 struct se_dev_stat_grps {
670 struct config_group stat_group;
671 struct config_group scsi_dev_group;
672 struct config_group scsi_tgt_dev_group;
673 struct config_group scsi_lu_group;
674 };
675
676 struct se_subsystem_dev {
677 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
678 #define SE_DEV_ALIAS_LEN 512
679 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
680 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
681 #define SE_UDEV_PATH_LEN 512
682 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
683 u32 su_dev_flags;
684 struct se_hba *se_dev_hba;
685 struct se_device *se_dev_ptr;
686 struct se_dev_attrib se_dev_attrib;
687 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
688 struct t10_alua t10_alua;
689 /* T10 Inquiry and VPD WWN Information */
690 struct t10_wwn t10_wwn;
691 /* T10 SPC-2 + SPC-3 Reservations */
692 struct t10_reservation t10_pr;
693 spinlock_t se_dev_lock;
694 void *se_dev_su_ptr;
695 struct list_head se_dev_node;
696 struct config_group se_dev_group;
697 /* For T10 Reservations */
698 struct config_group se_dev_pr_group;
699 /* For target_core_stat.c groups */
700 struct se_dev_stat_grps dev_stat_grps;
701 } ____cacheline_aligned;
702
703 struct se_device {
704 /* Set to 1 if thread is NOT sleeping on thread_sem */
705 u8 thread_active;
706 u8 dev_status_timer_flags;
707 /* RELATIVE TARGET PORT IDENTIFER Counter */
708 u16 dev_rpti_counter;
709 /* Used for SAM Task Attribute ordering */
710 u32 dev_cur_ordered_id;
711 u32 dev_flags;
712 u32 dev_port_count;
713 /* See transport_device_status_table */
714 u32 dev_status;
715 u32 dev_tcq_window_closed;
716 /* Physical device queue depth */
717 u32 queue_depth;
718 /* Used for SPC-2 reservations enforce of ISIDs */
719 u64 dev_res_bin_isid;
720 t10_task_attr_index_t dev_task_attr_type;
721 /* Pointer to transport specific device structure */
722 void *dev_ptr;
723 u32 dev_index;
724 u64 creation_time;
725 u32 num_resets;
726 u64 num_cmds;
727 u64 read_bytes;
728 u64 write_bytes;
729 spinlock_t stats_lock;
730 /* Active commands on this virtual SE device */
731 atomic_t active_cmds;
732 atomic_t simple_cmds;
733 atomic_t depth_left;
734 atomic_t dev_ordered_id;
735 atomic_t dev_tur_active;
736 atomic_t execute_tasks;
737 atomic_t dev_status_thr_count;
738 atomic_t dev_hoq_count;
739 atomic_t dev_ordered_sync;
740 atomic_t dev_qf_count;
741 struct se_obj dev_obj;
742 struct se_obj dev_access_obj;
743 struct se_obj dev_export_obj;
744 struct se_queue_obj dev_queue_obj;
745 spinlock_t delayed_cmd_lock;
746 spinlock_t ordered_cmd_lock;
747 spinlock_t execute_task_lock;
748 spinlock_t state_task_lock;
749 spinlock_t dev_alua_lock;
750 spinlock_t dev_reservation_lock;
751 spinlock_t dev_state_lock;
752 spinlock_t dev_status_lock;
753 spinlock_t dev_status_thr_lock;
754 spinlock_t se_port_lock;
755 spinlock_t se_tmr_lock;
756 spinlock_t qf_cmd_lock;
757 /* Used for legacy SPC-2 reservationsa */
758 struct se_node_acl *dev_reserved_node_acl;
759 /* Used for ALUA Logical Unit Group membership */
760 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
761 /* Used for SPC-3 Persistent Reservations */
762 struct t10_pr_registration *dev_pr_res_holder;
763 struct list_head dev_sep_list;
764 struct list_head dev_tmr_list;
765 struct timer_list dev_status_timer;
766 /* Pointer to descriptor for processing thread */
767 struct task_struct *process_thread;
768 pid_t process_thread_pid;
769 struct task_struct *dev_mgmt_thread;
770 struct work_struct qf_work_queue;
771 struct list_head delayed_cmd_list;
772 struct list_head ordered_cmd_list;
773 struct list_head execute_task_list;
774 struct list_head state_task_list;
775 struct list_head qf_cmd_list;
776 /* Pointer to associated SE HBA */
777 struct se_hba *se_hba;
778 struct se_subsystem_dev *se_sub_dev;
779 /* Pointer to template of function pointers for transport */
780 struct se_subsystem_api *transport;
781 /* Linked list for struct se_hba struct se_device list */
782 struct list_head dev_list;
783 /* Linked list for struct se_global->g_se_dev_list */
784 struct list_head g_se_dev_list;
785 } ____cacheline_aligned;
786
787 struct se_hba {
788 u16 hba_tpgt;
789 u32 hba_id;
790 /* See hba_flags_table */
791 u32 hba_flags;
792 /* Virtual iSCSI devices attached. */
793 u32 dev_count;
794 u32 hba_index;
795 /* Pointer to transport specific host structure. */
796 void *hba_ptr;
797 /* Linked list for struct se_device */
798 struct list_head hba_dev_list;
799 struct list_head hba_node;
800 spinlock_t device_lock;
801 struct config_group hba_group;
802 struct mutex hba_access_mutex;
803 struct se_subsystem_api *transport;
804 } ____cacheline_aligned;
805
806 struct se_port_stat_grps {
807 struct config_group stat_group;
808 struct config_group scsi_port_group;
809 struct config_group scsi_tgt_port_group;
810 struct config_group scsi_transport_group;
811 };
812
813 struct se_lun {
814 /* See transport_lun_status_table */
815 enum transport_lun_status_table lun_status;
816 u32 lun_access;
817 u32 lun_flags;
818 u32 unpacked_lun;
819 atomic_t lun_acl_count;
820 spinlock_t lun_acl_lock;
821 spinlock_t lun_cmd_lock;
822 spinlock_t lun_sep_lock;
823 struct completion lun_shutdown_comp;
824 struct list_head lun_cmd_list;
825 struct list_head lun_acl_list;
826 struct se_device *lun_se_dev;
827 struct se_port *lun_sep;
828 struct config_group lun_group;
829 struct se_port_stat_grps port_stat_grps;
830 } ____cacheline_aligned;
831
832 struct scsi_port_stats {
833 u64 cmd_pdus;
834 u64 tx_data_octets;
835 u64 rx_data_octets;
836 } ____cacheline_aligned;
837
838 struct se_port {
839 /* RELATIVE TARGET PORT IDENTIFER */
840 u16 sep_rtpi;
841 int sep_tg_pt_secondary_stat;
842 int sep_tg_pt_secondary_write_md;
843 u32 sep_index;
844 struct scsi_port_stats sep_stats;
845 /* Used for ALUA Target Port Groups membership */
846 atomic_t sep_tg_pt_gp_active;
847 atomic_t sep_tg_pt_secondary_offline;
848 /* Used for PR ALL_TG_PT=1 */
849 atomic_t sep_tg_pt_ref_cnt;
850 spinlock_t sep_alua_lock;
851 struct mutex sep_tg_pt_md_mutex;
852 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
853 struct se_lun *sep_lun;
854 struct se_portal_group *sep_tpg;
855 struct list_head sep_alua_list;
856 struct list_head sep_list;
857 } ____cacheline_aligned;
858
859 struct se_tpg_np {
860 struct se_portal_group *tpg_np_parent;
861 struct config_group tpg_np_group;
862 } ____cacheline_aligned;
863
864 struct se_portal_group {
865 /* Type of target portal group, see transport_tpg_type_table */
866 enum transport_tpg_type_table se_tpg_type;
867 /* Number of ACLed Initiator Nodes for this TPG */
868 u32 num_node_acls;
869 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
870 atomic_t tpg_pr_ref_count;
871 /* Spinlock for adding/removing ACLed Nodes */
872 spinlock_t acl_node_lock;
873 /* Spinlock for adding/removing sessions */
874 spinlock_t session_lock;
875 spinlock_t tpg_lun_lock;
876 /* Pointer to $FABRIC_MOD portal group */
877 void *se_tpg_fabric_ptr;
878 struct list_head se_tpg_node;
879 /* linked list for initiator ACL list */
880 struct list_head acl_node_list;
881 struct se_lun *tpg_lun_list;
882 struct se_lun tpg_virt_lun0;
883 /* List of TCM sessions associated wth this TPG */
884 struct list_head tpg_sess_list;
885 /* Pointer to $FABRIC_MOD dependent code */
886 struct target_core_fabric_ops *se_tpg_tfo;
887 struct se_wwn *se_tpg_wwn;
888 struct config_group tpg_group;
889 struct config_group *tpg_default_groups[6];
890 struct config_group tpg_lun_group;
891 struct config_group tpg_np_group;
892 struct config_group tpg_acl_group;
893 struct config_group tpg_attrib_group;
894 struct config_group tpg_param_group;
895 } ____cacheline_aligned;
896
897 struct se_wwn {
898 struct target_fabric_configfs *wwn_tf;
899 struct config_group wwn_group;
900 struct config_group *wwn_default_groups[2];
901 struct config_group fabric_stat_group;
902 } ____cacheline_aligned;
903
904 #endif /* TARGET_CORE_BASE_H */
Linux kernel - Deliverables
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