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