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