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target: Updates from AGrover and HCH (round 3)
[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 "v4.0.0-rc7-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 #define TRANSPORT_MAX_LUNS_PER_TPG 256
19 /*
20 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
21 *
22 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
23 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
24 * 16-byte CDBs by default and require an extra allocation for
25 * 32-byte CDBs to because of legacy issues.
26 *
27 * Within TCM Core there are no such legacy limitiations, so we go ahead
28 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
29 * within all TCM Core and subsystem plugin code.
30 */
31 #define TCM_MAX_COMMAND_SIZE 32
32 /*
33 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
34 * defined 96, but the real limit is 252 (or 260 including the header)
35 */
36 #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
37 /* Used by transport_send_check_condition_and_sense() */
38 #define SPC_SENSE_KEY_OFFSET 2
39 #define SPC_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 /* struct se_hba->hba_flags */
59 enum hba_flags_table {
60 HBA_FLAGS_INTERNAL_USE = 0x01,
61 HBA_FLAGS_PSCSI_MODE = 0x02,
62 };
63
64 /* struct se_lun->lun_status */
65 enum transport_lun_status_table {
66 TRANSPORT_LUN_STATUS_FREE = 0,
67 TRANSPORT_LUN_STATUS_ACTIVE = 1,
68 };
69
70 /* struct se_portal_group->se_tpg_type */
71 enum transport_tpg_type_table {
72 TRANSPORT_TPG_TYPE_NORMAL = 0,
73 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
74 };
75
76 /* Used for generate timer flags */
77 enum timer_flags_table {
78 TF_RUNNING = 0x01,
79 TF_STOP = 0x02,
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_DEFERRED_CMD = 2,
87 TRANSPORT_WRITE_PENDING = 3,
88 TRANSPORT_PROCESS_WRITE = 4,
89 TRANSPORT_PROCESSING = 5,
90 TRANSPORT_COMPLETE_OK = 6,
91 TRANSPORT_COMPLETE_FAILURE = 7,
92 TRANSPORT_COMPLETE_TIMEOUT = 8,
93 TRANSPORT_PROCESS_TMR = 9,
94 TRANSPORT_TMR_COMPLETE = 10,
95 TRANSPORT_ISTATE_PROCESSING = 11,
96 TRANSPORT_ISTATE_PROCESSED = 12,
97 TRANSPORT_KILL = 13,
98 TRANSPORT_REMOVE = 14,
99 TRANSPORT_FREE = 15,
100 TRANSPORT_NEW_CMD_MAP = 16,
101 TRANSPORT_FREE_CMD_INTR = 17,
102 };
103
104 /* Used for struct se_cmd->se_cmd_flags */
105 enum se_cmd_flags_table {
106 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
107 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
108 SCF_EMULATED_TASK_SENSE = 0x00000004,
109 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
110 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
111 SCF_SCSI_CONTROL_NONSG_IO_CDB = 0x00000020,
112 SCF_SCSI_NON_DATA_CDB = 0x00000040,
113 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
114 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
115 SCF_CMD_PASSTHROUGH_NOALLOC = 0x00000200,
116 SCF_SE_CMD_FAILED = 0x00000400,
117 SCF_SE_LUN_CMD = 0x00000800,
118 SCF_SE_ALLOW_EOO = 0x00001000,
119 SCF_SE_DISABLE_ONLINE_CHECK = 0x00002000,
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_CONTIG_TO_SG = 0x00200000,
128 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
129 SCF_EMULATE_SYNC_CACHE = 0x00800000,
130 SCF_EMULATE_CDB_ASYNC = 0x01000000,
131 SCF_EMULATE_SYNC_UNMAP = 0x02000000
132 };
133
134 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
135 enum transport_lunflags_table {
136 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
137 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
138 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
139 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
140 };
141
142 /* struct se_device->dev_status */
143 enum transport_device_status_table {
144 TRANSPORT_DEVICE_ACTIVATED = 0x01,
145 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
146 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
147 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
148 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
149 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
150 };
151
152 /*
153 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
154 * to signal which ASC/ASCQ sense payload should be built.
155 */
156 enum tcm_sense_reason_table {
157 TCM_NON_EXISTENT_LUN = 0x01,
158 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
159 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
160 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
161 TCM_SERVICE_CRC_ERROR = 0x05,
162 TCM_SNACK_REJECTED = 0x06,
163 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
164 TCM_INVALID_CDB_FIELD = 0x08,
165 TCM_INVALID_PARAMETER_LIST = 0x09,
166 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
167 TCM_UNKNOWN_MODE_PAGE = 0x0b,
168 TCM_WRITE_PROTECTED = 0x0c,
169 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
170 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
171 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
172 };
173
174 struct se_obj {
175 atomic_t obj_access_count;
176 } ____cacheline_aligned;
177
178 /*
179 * Used by TCM Core internally to signal if ALUA emulation is enabled or
180 * disabled, or running in with TCM/pSCSI passthrough mode
181 */
182 typedef enum {
183 SPC_ALUA_PASSTHROUGH,
184 SPC2_ALUA_DISABLED,
185 SPC3_ALUA_EMULATED
186 } t10_alua_index_t;
187
188 /*
189 * Used by TCM Core internally to signal if SAM Task Attribute emulation
190 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
191 */
192 typedef enum {
193 SAM_TASK_ATTR_PASSTHROUGH,
194 SAM_TASK_ATTR_UNTAGGED,
195 SAM_TASK_ATTR_EMULATED
196 } t10_task_attr_index_t;
197
198 /*
199 * Used for target SCSI statistics
200 */
201 typedef enum {
202 SCSI_INST_INDEX,
203 SCSI_DEVICE_INDEX,
204 SCSI_AUTH_INTR_INDEX,
205 SCSI_INDEX_TYPE_MAX
206 } scsi_index_t;
207
208 struct se_cmd;
209
210 struct t10_alua {
211 t10_alua_index_t alua_type;
212 /* ALUA Target Port Group ID */
213 u16 alua_tg_pt_gps_counter;
214 u32 alua_tg_pt_gps_count;
215 spinlock_t tg_pt_gps_lock;
216 struct se_subsystem_dev *t10_sub_dev;
217 /* Used for default ALUA Target Port Group */
218 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
219 /* Used for default ALUA Target Port Group ConfigFS group */
220 struct config_group alua_tg_pt_gps_group;
221 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
222 struct list_head tg_pt_gps_list;
223 } ____cacheline_aligned;
224
225 struct t10_alua_lu_gp {
226 u16 lu_gp_id;
227 int lu_gp_valid_id;
228 u32 lu_gp_members;
229 atomic_t lu_gp_shutdown;
230 atomic_t lu_gp_ref_cnt;
231 spinlock_t lu_gp_lock;
232 struct config_group lu_gp_group;
233 struct list_head lu_gp_node;
234 struct list_head lu_gp_mem_list;
235 } ____cacheline_aligned;
236
237 struct t10_alua_lu_gp_member {
238 bool lu_gp_assoc;
239 atomic_t lu_gp_mem_ref_cnt;
240 spinlock_t lu_gp_mem_lock;
241 struct t10_alua_lu_gp *lu_gp;
242 struct se_device *lu_gp_mem_dev;
243 struct list_head lu_gp_mem_list;
244 } ____cacheline_aligned;
245
246 struct t10_alua_tg_pt_gp {
247 u16 tg_pt_gp_id;
248 int tg_pt_gp_valid_id;
249 int tg_pt_gp_alua_access_status;
250 int tg_pt_gp_alua_access_type;
251 int tg_pt_gp_nonop_delay_msecs;
252 int tg_pt_gp_trans_delay_msecs;
253 int tg_pt_gp_pref;
254 int tg_pt_gp_write_metadata;
255 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
256 #define ALUA_MD_BUF_LEN 1024
257 u32 tg_pt_gp_md_buf_len;
258 u32 tg_pt_gp_members;
259 atomic_t tg_pt_gp_alua_access_state;
260 atomic_t tg_pt_gp_ref_cnt;
261 spinlock_t tg_pt_gp_lock;
262 struct mutex tg_pt_gp_md_mutex;
263 struct se_subsystem_dev *tg_pt_gp_su_dev;
264 struct config_group tg_pt_gp_group;
265 struct list_head tg_pt_gp_list;
266 struct list_head tg_pt_gp_mem_list;
267 } ____cacheline_aligned;
268
269 struct t10_alua_tg_pt_gp_member {
270 bool tg_pt_gp_assoc;
271 atomic_t tg_pt_gp_mem_ref_cnt;
272 spinlock_t tg_pt_gp_mem_lock;
273 struct t10_alua_tg_pt_gp *tg_pt_gp;
274 struct se_port *tg_pt;
275 struct list_head tg_pt_gp_mem_list;
276 } ____cacheline_aligned;
277
278 struct t10_vpd {
279 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
280 int protocol_identifier_set;
281 u32 protocol_identifier;
282 u32 device_identifier_code_set;
283 u32 association;
284 u32 device_identifier_type;
285 struct list_head vpd_list;
286 } ____cacheline_aligned;
287
288 struct t10_wwn {
289 char vendor[8];
290 char model[16];
291 char revision[4];
292 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
293 spinlock_t t10_vpd_lock;
294 struct se_subsystem_dev *t10_sub_dev;
295 struct config_group t10_wwn_group;
296 struct list_head t10_vpd_list;
297 } ____cacheline_aligned;
298
299
300 /*
301 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
302 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
303 * mode
304 */
305 typedef enum {
306 SPC_PASSTHROUGH,
307 SPC2_RESERVATIONS,
308 SPC3_PERSISTENT_RESERVATIONS
309 } t10_reservations_index_t;
310
311 struct t10_pr_registration {
312 /* Used for fabrics that contain WWN+ISID */
313 #define PR_REG_ISID_LEN 16
314 /* PR_REG_ISID_LEN + ',i,0x' */
315 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
316 char pr_reg_isid[PR_REG_ISID_LEN];
317 /* Used during APTPL metadata reading */
318 #define PR_APTPL_MAX_IPORT_LEN 256
319 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
320 /* Used during APTPL metadata reading */
321 #define PR_APTPL_MAX_TPORT_LEN 256
322 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
323 /* For writing out live meta data */
324 unsigned char *pr_aptpl_buf;
325 u16 pr_aptpl_rpti;
326 u16 pr_reg_tpgt;
327 /* Reservation effects all target ports */
328 int pr_reg_all_tg_pt;
329 /* Activate Persistence across Target Power Loss */
330 int pr_reg_aptpl;
331 int pr_res_holder;
332 int pr_res_type;
333 int pr_res_scope;
334 /* Used for fabric initiator WWPNs using a ISID */
335 bool isid_present_at_reg;
336 u32 pr_res_mapped_lun;
337 u32 pr_aptpl_target_lun;
338 u32 pr_res_generation;
339 u64 pr_reg_bin_isid;
340 u64 pr_res_key;
341 atomic_t pr_res_holders;
342 struct se_node_acl *pr_reg_nacl;
343 struct se_dev_entry *pr_reg_deve;
344 struct se_lun *pr_reg_tg_pt_lun;
345 struct list_head pr_reg_list;
346 struct list_head pr_reg_abort_list;
347 struct list_head pr_reg_aptpl_list;
348 struct list_head pr_reg_atp_list;
349 struct list_head pr_reg_atp_mem_list;
350 } ____cacheline_aligned;
351
352 /*
353 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
354 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
355 * core_setup_reservations()
356 */
357 struct t10_reservation_ops {
358 int (*t10_reservation_check)(struct se_cmd *, u32 *);
359 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
360 int (*t10_pr_register)(struct se_cmd *);
361 int (*t10_pr_clear)(struct se_cmd *);
362 };
363
364 struct t10_reservation {
365 /* Reservation effects all target ports */
366 int pr_all_tg_pt;
367 /* Activate Persistence across Target Power Loss enabled
368 * for SCSI device */
369 int pr_aptpl_active;
370 /* Used by struct t10_reservation->pr_aptpl_buf_len */
371 #define PR_APTPL_BUF_LEN 8192
372 u32 pr_aptpl_buf_len;
373 u32 pr_generation;
374 t10_reservations_index_t res_type;
375 spinlock_t registration_lock;
376 spinlock_t aptpl_reg_lock;
377 /*
378 * This will always be set by one individual I_T Nexus.
379 * However with all_tg_pt=1, other I_T Nexus from the
380 * same initiator can access PR reg/res info on a different
381 * target port.
382 *
383 * There is also the 'All Registrants' case, where there is
384 * a single *pr_res_holder of the reservation, but all
385 * registrations are considered reservation holders.
386 */
387 struct se_node_acl *pr_res_holder;
388 struct list_head registration_list;
389 struct list_head aptpl_reg_list;
390 struct t10_reservation_ops pr_ops;
391 } ____cacheline_aligned;
392
393 struct se_queue_req {
394 int state;
395 struct se_cmd *cmd;
396 struct list_head qr_list;
397 } ____cacheline_aligned;
398
399 struct se_queue_obj {
400 atomic_t queue_cnt;
401 spinlock_t cmd_queue_lock;
402 struct list_head qobj_list;
403 wait_queue_head_t thread_wq;
404 } ____cacheline_aligned;
405
406 struct se_task {
407 unsigned char task_sense;
408 struct scatterlist *task_sg;
409 u32 task_sg_num;
410 struct scatterlist *task_sg_bidi;
411 u8 task_scsi_status;
412 u8 task_flags;
413 int task_error_status;
414 int task_state_flags;
415 bool task_padded_sg;
416 unsigned long long task_lba;
417 u32 task_no;
418 u32 task_sectors;
419 u32 task_size;
420 enum dma_data_direction task_data_direction;
421 struct se_cmd *task_se_cmd;
422 struct se_device *se_dev;
423 struct completion task_stop_comp;
424 atomic_t task_active;
425 atomic_t task_execute_queue;
426 atomic_t task_timeout;
427 atomic_t task_sent;
428 atomic_t task_stop;
429 atomic_t task_state_active;
430 struct timer_list task_timer;
431 struct se_device *se_obj_ptr;
432 struct list_head t_list;
433 struct list_head t_execute_list;
434 struct list_head t_state_list;
435 } ____cacheline_aligned;
436
437 struct se_cmd {
438 /* SAM response code being sent to initiator */
439 u8 scsi_status;
440 u8 scsi_asc;
441 u8 scsi_ascq;
442 u8 scsi_sense_reason;
443 u16 scsi_sense_length;
444 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
445 int alua_nonop_delay;
446 /* See include/linux/dma-mapping.h */
447 enum dma_data_direction data_direction;
448 /* For SAM Task Attribute */
449 int sam_task_attr;
450 /* Transport protocol dependent state, see transport_state_table */
451 enum transport_state_table t_state;
452 /* Transport protocol dependent state for out of order CmdSNs */
453 int deferred_t_state;
454 /* Transport specific error status */
455 int transport_error_status;
456 /* See se_cmd_flags_table */
457 u32 se_cmd_flags;
458 u32 se_ordered_id;
459 /* Total size in bytes associated with command */
460 u32 data_length;
461 /* SCSI Presented Data Transfer Length */
462 u32 cmd_spdtl;
463 u32 residual_count;
464 u32 orig_fe_lun;
465 /* Persistent Reservation key */
466 u64 pr_res_key;
467 atomic_t transport_sent;
468 /* Used for sense data */
469 void *sense_buffer;
470 struct list_head se_delayed_node;
471 struct list_head se_ordered_node;
472 struct list_head se_lun_node;
473 struct se_device *se_dev;
474 struct se_dev_entry *se_deve;
475 struct se_device *se_obj_ptr;
476 struct se_device *se_orig_obj_ptr;
477 struct se_lun *se_lun;
478 /* Only used for internal passthrough and legacy TCM fabric modules */
479 struct se_session *se_sess;
480 struct se_tmr_req *se_tmr_req;
481 struct list_head se_queue_node;
482 struct target_core_fabric_ops *se_tfo;
483 int (*transport_emulate_cdb)(struct se_cmd *);
484 void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *);
485 void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
486 void (*transport_complete_callback)(struct se_cmd *);
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_se_num;
494 u32 t_tasks_se_bidi_num;
495 u32 t_tasks_sg_chained_no;
496 atomic_t t_fe_count;
497 atomic_t t_se_count;
498 atomic_t t_task_cdbs_left;
499 atomic_t t_task_cdbs_ex_left;
500 atomic_t t_task_cdbs_timeout_left;
501 atomic_t t_task_cdbs_sent;
502 atomic_t t_transport_aborted;
503 atomic_t t_transport_active;
504 atomic_t t_transport_complete;
505 atomic_t t_transport_queue_active;
506 atomic_t t_transport_sent;
507 atomic_t t_transport_stop;
508 atomic_t t_transport_timeout;
509 atomic_t transport_dev_active;
510 atomic_t transport_lun_active;
511 atomic_t transport_lun_fe_stop;
512 atomic_t transport_lun_stop;
513 spinlock_t t_state_lock;
514 struct completion t_transport_stop_comp;
515 struct completion transport_lun_fe_stop_comp;
516 struct completion transport_lun_stop_comp;
517 struct scatterlist *t_tasks_sg_chained;
518 struct scatterlist t_tasks_sg_bounce;
519 void *t_task_buf;
520 /*
521 * Used for pre-registered fabric SGL passthrough WRITE and READ
522 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
523 * and other HW target mode fabric modules.
524 */
525 struct scatterlist *t_task_pt_sgl;
526 u32 t_task_pt_sgl_num;
527 struct list_head t_mem_list;
528 /* Used for BIDI READ */
529 struct list_head t_mem_bidi_list;
530 struct list_head t_task_list;
531 u32 t_task_list_num;
532
533 } ____cacheline_aligned;
534
535 struct se_tmr_req {
536 /* Task Management function to be preformed */
537 u8 function;
538 /* Task Management response to send */
539 u8 response;
540 int call_transport;
541 /* Reference to ITT that Task Mgmt should be preformed */
542 u32 ref_task_tag;
543 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
544 u64 ref_task_lun;
545 void *fabric_tmr_ptr;
546 struct se_cmd *task_cmd;
547 struct se_cmd *ref_cmd;
548 struct se_device *tmr_dev;
549 struct se_lun *tmr_lun;
550 struct list_head tmr_list;
551 } ____cacheline_aligned;
552
553 struct se_ua {
554 u8 ua_asc;
555 u8 ua_ascq;
556 struct se_node_acl *ua_nacl;
557 struct list_head ua_dev_list;
558 struct list_head ua_nacl_list;
559 } ____cacheline_aligned;
560
561 struct se_node_acl {
562 char initiatorname[TRANSPORT_IQN_LEN];
563 /* Used to signal demo mode created ACL, disabled by default */
564 bool dynamic_node_acl;
565 u32 queue_depth;
566 u32 acl_index;
567 u64 num_cmds;
568 u64 read_bytes;
569 u64 write_bytes;
570 spinlock_t stats_lock;
571 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
572 atomic_t acl_pr_ref_count;
573 struct se_dev_entry *device_list;
574 struct se_session *nacl_sess;
575 struct se_portal_group *se_tpg;
576 spinlock_t device_list_lock;
577 spinlock_t nacl_sess_lock;
578 struct config_group acl_group;
579 struct config_group acl_attrib_group;
580 struct config_group acl_auth_group;
581 struct config_group acl_param_group;
582 struct config_group acl_fabric_stat_group;
583 struct config_group *acl_default_groups[5];
584 struct list_head acl_list;
585 struct list_head acl_sess_list;
586 } ____cacheline_aligned;
587
588 struct se_session {
589 u64 sess_bin_isid;
590 struct se_node_acl *se_node_acl;
591 struct se_portal_group *se_tpg;
592 void *fabric_sess_ptr;
593 struct list_head sess_list;
594 struct list_head sess_acl_list;
595 } ____cacheline_aligned;
596
597 struct se_device;
598 struct se_transform_info;
599 struct scatterlist;
600
601 struct se_ml_stat_grps {
602 struct config_group stat_group;
603 struct config_group scsi_auth_intr_group;
604 struct config_group scsi_att_intr_port_group;
605 };
606
607 struct se_lun_acl {
608 char initiatorname[TRANSPORT_IQN_LEN];
609 u32 mapped_lun;
610 struct se_node_acl *se_lun_nacl;
611 struct se_lun *se_lun;
612 struct list_head lacl_list;
613 struct config_group se_lun_group;
614 struct se_ml_stat_grps ml_stat_grps;
615 } ____cacheline_aligned;
616
617 struct se_dev_entry {
618 bool def_pr_registered;
619 /* See transport_lunflags_table */
620 u32 lun_flags;
621 u32 deve_cmds;
622 u32 mapped_lun;
623 u32 average_bytes;
624 u32 last_byte_count;
625 u32 total_cmds;
626 u32 total_bytes;
627 u64 pr_res_key;
628 u64 creation_time;
629 u32 attach_count;
630 u64 read_bytes;
631 u64 write_bytes;
632 atomic_t ua_count;
633 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
634 atomic_t pr_ref_count;
635 struct se_lun_acl *se_lun_acl;
636 spinlock_t ua_lock;
637 struct se_lun *se_lun;
638 struct list_head alua_port_list;
639 struct list_head ua_list;
640 } ____cacheline_aligned;
641
642 struct se_dev_limits {
643 /* Max supported HW queue depth */
644 u32 hw_queue_depth;
645 /* Max supported virtual queue depth */
646 u32 queue_depth;
647 /* From include/linux/blkdev.h for the other HW/SW limits. */
648 struct queue_limits limits;
649 } ____cacheline_aligned;
650
651 struct se_dev_attrib {
652 int emulate_dpo;
653 int emulate_fua_write;
654 int emulate_fua_read;
655 int emulate_write_cache;
656 int emulate_ua_intlck_ctrl;
657 int emulate_tas;
658 int emulate_tpu;
659 int emulate_tpws;
660 int emulate_reservations;
661 int emulate_alua;
662 int enforce_pr_isids;
663 u32 hw_block_size;
664 u32 block_size;
665 u32 hw_max_sectors;
666 u32 max_sectors;
667 u32 optimal_sectors;
668 u32 hw_queue_depth;
669 u32 queue_depth;
670 u32 task_timeout;
671 u32 max_unmap_lba_count;
672 u32 max_unmap_block_desc_count;
673 u32 unmap_granularity;
674 u32 unmap_granularity_alignment;
675 struct se_subsystem_dev *da_sub_dev;
676 struct config_group da_group;
677 } ____cacheline_aligned;
678
679 struct se_dev_stat_grps {
680 struct config_group stat_group;
681 struct config_group scsi_dev_group;
682 struct config_group scsi_tgt_dev_group;
683 struct config_group scsi_lu_group;
684 };
685
686 struct se_subsystem_dev {
687 /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
688 #define SE_DEV_ALIAS_LEN 512
689 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
690 /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
691 #define SE_UDEV_PATH_LEN 512
692 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
693 u32 su_dev_flags;
694 struct se_hba *se_dev_hba;
695 struct se_device *se_dev_ptr;
696 struct se_dev_attrib se_dev_attrib;
697 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
698 struct t10_alua t10_alua;
699 /* T10 Inquiry and VPD WWN Information */
700 struct t10_wwn t10_wwn;
701 /* T10 SPC-2 + SPC-3 Reservations */
702 struct t10_reservation t10_pr;
703 spinlock_t se_dev_lock;
704 void *se_dev_su_ptr;
705 struct list_head se_dev_node;
706 struct config_group se_dev_group;
707 /* For T10 Reservations */
708 struct config_group se_dev_pr_group;
709 /* For target_core_stat.c groups */
710 struct se_dev_stat_grps dev_stat_grps;
711 } ____cacheline_aligned;
712
713 struct se_device {
714 /* Set to 1 if thread is NOT sleeping on thread_sem */
715 u8 thread_active;
716 u8 dev_status_timer_flags;
717 /* RELATIVE TARGET PORT IDENTIFER Counter */
718 u16 dev_rpti_counter;
719 /* Used for SAM Task Attribute ordering */
720 u32 dev_cur_ordered_id;
721 u32 dev_flags;
722 u32 dev_port_count;
723 /* See transport_device_status_table */
724 u32 dev_status;
725 u32 dev_tcq_window_closed;
726 /* Physical device queue depth */
727 u32 queue_depth;
728 /* Used for SPC-2 reservations enforce of ISIDs */
729 u64 dev_res_bin_isid;
730 t10_task_attr_index_t dev_task_attr_type;
731 /* Pointer to transport specific device structure */
732 void *dev_ptr;
733 u32 dev_index;
734 u64 creation_time;
735 u32 num_resets;
736 u64 num_cmds;
737 u64 read_bytes;
738 u64 write_bytes;
739 spinlock_t stats_lock;
740 /* Active commands on this virtual SE device */
741 atomic_t active_cmds;
742 atomic_t simple_cmds;
743 atomic_t depth_left;
744 atomic_t dev_ordered_id;
745 atomic_t dev_tur_active;
746 atomic_t execute_tasks;
747 atomic_t dev_status_thr_count;
748 atomic_t dev_hoq_count;
749 atomic_t dev_ordered_sync;
750 struct se_obj dev_obj;
751 struct se_obj dev_access_obj;
752 struct se_obj dev_export_obj;
753 struct se_queue_obj dev_queue_obj;
754 spinlock_t delayed_cmd_lock;
755 spinlock_t ordered_cmd_lock;
756 spinlock_t execute_task_lock;
757 spinlock_t state_task_lock;
758 spinlock_t dev_alua_lock;
759 spinlock_t dev_reservation_lock;
760 spinlock_t dev_state_lock;
761 spinlock_t dev_status_lock;
762 spinlock_t dev_status_thr_lock;
763 spinlock_t se_port_lock;
764 spinlock_t se_tmr_lock;
765 /* Used for legacy SPC-2 reservationsa */
766 struct se_node_acl *dev_reserved_node_acl;
767 /* Used for ALUA Logical Unit Group membership */
768 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
769 /* Used for SPC-3 Persistent Reservations */
770 struct t10_pr_registration *dev_pr_res_holder;
771 struct list_head dev_sep_list;
772 struct list_head dev_tmr_list;
773 struct timer_list dev_status_timer;
774 /* Pointer to descriptor for processing thread */
775 struct task_struct *process_thread;
776 pid_t process_thread_pid;
777 struct task_struct *dev_mgmt_thread;
778 struct list_head delayed_cmd_list;
779 struct list_head ordered_cmd_list;
780 struct list_head execute_task_list;
781 struct list_head state_task_list;
782 /* Pointer to associated SE HBA */
783 struct se_hba *se_hba;
784 struct se_subsystem_dev *se_sub_dev;
785 /* Pointer to template of function pointers for transport */
786 struct se_subsystem_api *transport;
787 /* Linked list for struct se_hba struct se_device list */
788 struct list_head dev_list;
789 /* Linked list for struct se_global->g_se_dev_list */
790 struct list_head g_se_dev_list;
791 } ____cacheline_aligned;
792
793 struct se_hba {
794 u16 hba_tpgt;
795 u32 hba_id;
796 /* See hba_flags_table */
797 u32 hba_flags;
798 /* Virtual iSCSI devices attached. */
799 u32 dev_count;
800 u32 hba_index;
801 /* Pointer to transport specific host structure. */
802 void *hba_ptr;
803 /* Linked list for struct se_device */
804 struct list_head hba_dev_list;
805 struct list_head hba_node;
806 spinlock_t device_lock;
807 struct config_group hba_group;
808 struct mutex hba_access_mutex;
809 struct se_subsystem_api *transport;
810 } ____cacheline_aligned;
811
812 struct se_port_stat_grps {
813 struct config_group stat_group;
814 struct config_group scsi_port_group;
815 struct config_group scsi_tgt_port_group;
816 struct config_group scsi_transport_group;
817 };
818
819 struct se_lun {
820 /* See transport_lun_status_table */
821 enum transport_lun_status_table lun_status;
822 u32 lun_access;
823 u32 lun_flags;
824 u32 unpacked_lun;
825 atomic_t lun_acl_count;
826 spinlock_t lun_acl_lock;
827 spinlock_t lun_cmd_lock;
828 spinlock_t lun_sep_lock;
829 struct completion lun_shutdown_comp;
830 struct list_head lun_cmd_list;
831 struct list_head lun_acl_list;
832 struct se_device *lun_se_dev;
833 struct se_port *lun_sep;
834 struct config_group lun_group;
835 struct se_port_stat_grps port_stat_grps;
836 } ____cacheline_aligned;
837
838 struct scsi_port_stats {
839 u64 cmd_pdus;
840 u64 tx_data_octets;
841 u64 rx_data_octets;
842 } ____cacheline_aligned;
843
844 struct se_port {
845 /* RELATIVE TARGET PORT IDENTIFER */
846 u16 sep_rtpi;
847 int sep_tg_pt_secondary_stat;
848 int sep_tg_pt_secondary_write_md;
849 u32 sep_index;
850 struct scsi_port_stats sep_stats;
851 /* Used for ALUA Target Port Groups membership */
852 atomic_t sep_tg_pt_gp_active;
853 atomic_t sep_tg_pt_secondary_offline;
854 /* Used for PR ALL_TG_PT=1 */
855 atomic_t sep_tg_pt_ref_cnt;
856 spinlock_t sep_alua_lock;
857 struct mutex sep_tg_pt_md_mutex;
858 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
859 struct se_lun *sep_lun;
860 struct se_portal_group *sep_tpg;
861 struct list_head sep_alua_list;
862 struct list_head sep_list;
863 } ____cacheline_aligned;
864
865 struct se_tpg_np {
866 struct se_portal_group *tpg_np_parent;
867 struct config_group tpg_np_group;
868 } ____cacheline_aligned;
869
870 struct se_portal_group {
871 /* Type of target portal group, see transport_tpg_type_table */
872 enum transport_tpg_type_table se_tpg_type;
873 /* Number of ACLed Initiator Nodes for this TPG */
874 u32 num_node_acls;
875 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
876 atomic_t tpg_pr_ref_count;
877 /* Spinlock for adding/removing ACLed Nodes */
878 spinlock_t acl_node_lock;
879 /* Spinlock for adding/removing sessions */
880 spinlock_t session_lock;
881 spinlock_t tpg_lun_lock;
882 /* Pointer to $FABRIC_MOD portal group */
883 void *se_tpg_fabric_ptr;
884 struct list_head se_tpg_node;
885 /* linked list for initiator ACL list */
886 struct list_head acl_node_list;
887 struct se_lun *tpg_lun_list;
888 struct se_lun tpg_virt_lun0;
889 /* List of TCM sessions associated wth this TPG */
890 struct list_head tpg_sess_list;
891 /* Pointer to $FABRIC_MOD dependent code */
892 struct target_core_fabric_ops *se_tpg_tfo;
893 struct se_wwn *se_tpg_wwn;
894 struct config_group tpg_group;
895 struct config_group *tpg_default_groups[6];
896 struct config_group tpg_lun_group;
897 struct config_group tpg_np_group;
898 struct config_group tpg_acl_group;
899 struct config_group tpg_attrib_group;
900 struct config_group tpg_param_group;
901 } ____cacheline_aligned;
902
903 struct se_wwn {
904 struct target_fabric_configfs *wwn_tf;
905 struct config_group wwn_group;
906 struct config_group *wwn_default_groups[2];
907 struct config_group fabric_stat_group;
908 } ____cacheline_aligned;
909
910 #endif /* TARGET_CORE_BASE_H */
Linux kernel - Deliverables
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