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target: Cleanup unused target_core_base.h bits
[deliverable/linux.git] / include / target / target_core_base.h
CommitLineData
c66ac9db
NB		 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>
c66ac9db 11
fa495159 12#define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml"
c66ac9db 13
c66ac9db 14/* Maximum Number of LUNs per Target Portal Group */
d0229ae3 15/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
c66ac9db
NB		 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
25985edc 23 * 32-byte CDBs to because of legacy issues.
c66ac9db
NB		 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 */
57enum hba_flags_table {
58 HBA_FLAGS_INTERNAL_USE = 0x01,
59 HBA_FLAGS_PSCSI_MODE = 0x02,
60};
61
62/* struct se_lun->lun_status */
63enum 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 */
69enum transport_tpg_type_table {
70 TRANSPORT_TPG_TYPE_NORMAL = 0,
71 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
72};
73
74/* Used for generate timer flags */
75enum timer_flags_table {
76 TF_RUNNING = 0x01,
77 TF_STOP = 0x02,
78};
79
80/* Special transport agnostic struct se_cmd->t_states */
81enum transport_state_table {
82 TRANSPORT_NO_STATE = 0,
83 TRANSPORT_NEW_CMD = 1,
84 TRANSPORT_DEFERRED_CMD = 2,
85 TRANSPORT_WRITE_PENDING = 3,
86 TRANSPORT_PROCESS_WRITE = 4,
87 TRANSPORT_PROCESSING = 5,
88 TRANSPORT_COMPLETE_OK = 6,
89 TRANSPORT_COMPLETE_FAILURE = 7,
90 TRANSPORT_COMPLETE_TIMEOUT = 8,
91 TRANSPORT_PROCESS_TMR = 9,
92 TRANSPORT_TMR_COMPLETE = 10,
93 TRANSPORT_ISTATE_PROCESSING = 11,
94 TRANSPORT_ISTATE_PROCESSED = 12,
95 TRANSPORT_KILL = 13,
96 TRANSPORT_REMOVE = 14,
97 TRANSPORT_FREE = 15,
98 TRANSPORT_NEW_CMD_MAP = 16,
f4366772 99 TRANSPORT_FREE_CMD_INTR = 17,
07bde79a 100 TRANSPORT_COMPLETE_QF_WP = 18,
c66ac9db
NB		 101};
102
103/* Used for struct se_cmd->se_cmd_flags */
104enum se_cmd_flags_table {
105 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
106 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
107 SCF_EMULATED_TASK_SENSE = 0x00000004,
108 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
109 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
c66ac9db
NB		 110 SCF_SCSI_NON_DATA_CDB = 0x00000040,
111 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
112 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
c66ac9db
NB		 113 SCF_SE_CMD_FAILED = 0x00000400,
114 SCF_SE_LUN_CMD = 0x00000800,
115 SCF_SE_ALLOW_EOO = 0x00001000,
c66ac9db
NB		 116 SCF_SENT_CHECK_CONDITION = 0x00004000,
117 SCF_OVERFLOW_BIT = 0x00008000,
118 SCF_UNDERFLOW_BIT = 0x00010000,
119 SCF_SENT_DELAYED_TAS = 0x00020000,
120 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
121 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
5951146d 122 SCF_UNUSED = 0x00100000,
c66ac9db 123 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
c66ac9db 124 SCF_EMULATE_CDB_ASYNC = 0x01000000,
07bde79a 125 SCF_EMULATE_QUEUE_FULL = 0x02000000,
c66ac9db
NB		 126};
127
128/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
129enum transport_lunflags_table {
130 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
131 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
132 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
133 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
134};
135
136/* struct se_device->dev_status */
137enum transport_device_status_table {
138 TRANSPORT_DEVICE_ACTIVATED = 0x01,
139 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
140 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
141 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
142 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
143 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
144};
145
146/*
147 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
148 * to signal which ASC/ASCQ sense payload should be built.
149 */
150enum tcm_sense_reason_table {
151 TCM_NON_EXISTENT_LUN = 0x01,
152 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
153 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
154 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
155 TCM_SERVICE_CRC_ERROR = 0x05,
156 TCM_SNACK_REJECTED = 0x06,
157 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
158 TCM_INVALID_CDB_FIELD = 0x08,
159 TCM_INVALID_PARAMETER_LIST = 0x09,
160 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
161 TCM_UNKNOWN_MODE_PAGE = 0x0b,
162 TCM_WRITE_PROTECTED = 0x0c,
163 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
164 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
165 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
166};
167
168struct se_obj {
169 atomic_t obj_access_count;
170} ____cacheline_aligned;
171
172/*
173 * Used by TCM Core internally to signal if ALUA emulation is enabled or
174 * disabled, or running in with TCM/pSCSI passthrough mode
175 */
176typedef enum {
177 SPC_ALUA_PASSTHROUGH,
178 SPC2_ALUA_DISABLED,
179 SPC3_ALUA_EMULATED
180} t10_alua_index_t;
181
182/*
183 * Used by TCM Core internally to signal if SAM Task Attribute emulation
184 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
185 */
186typedef enum {
187 SAM_TASK_ATTR_PASSTHROUGH,
188 SAM_TASK_ATTR_UNTAGGED,
189 SAM_TASK_ATTR_EMULATED
190} t10_task_attr_index_t;
191
e89d15ee
NB		 192/*
193 * Used for target SCSI statistics
194 */
195typedef enum {
196 SCSI_INST_INDEX,
197 SCSI_DEVICE_INDEX,
198 SCSI_AUTH_INTR_INDEX,
199 SCSI_INDEX_TYPE_MAX
200} scsi_index_t;
201
c66ac9db
NB		 202struct se_cmd;
203
204struct t10_alua {
205 t10_alua_index_t alua_type;
206 /* ALUA Target Port Group ID */
207 u16 alua_tg_pt_gps_counter;
208 u32 alua_tg_pt_gps_count;
209 spinlock_t tg_pt_gps_lock;
210 struct se_subsystem_dev *t10_sub_dev;
211 /* Used for default ALUA Target Port Group */
212 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
213 /* Used for default ALUA Target Port Group ConfigFS group */
214 struct config_group alua_tg_pt_gps_group;
215 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
216 struct list_head tg_pt_gps_list;
217} ____cacheline_aligned;
218
219struct t10_alua_lu_gp {
220 u16 lu_gp_id;
221 int lu_gp_valid_id;
222 u32 lu_gp_members;
223 atomic_t lu_gp_shutdown;
224 atomic_t lu_gp_ref_cnt;
225 spinlock_t lu_gp_lock;
226 struct config_group lu_gp_group;
e3d6f909 227 struct list_head lu_gp_node;
c66ac9db
NB		 228 struct list_head lu_gp_mem_list;
229} ____cacheline_aligned;
230
231struct t10_alua_lu_gp_member {
5dd7ed2e 232 bool lu_gp_assoc;
c66ac9db
NB		 233 atomic_t lu_gp_mem_ref_cnt;
234 spinlock_t lu_gp_mem_lock;
235 struct t10_alua_lu_gp *lu_gp;
236 struct se_device *lu_gp_mem_dev;
237 struct list_head lu_gp_mem_list;
238} ____cacheline_aligned;
239
240struct t10_alua_tg_pt_gp {
241 u16 tg_pt_gp_id;
242 int tg_pt_gp_valid_id;
243 int tg_pt_gp_alua_access_status;
244 int tg_pt_gp_alua_access_type;
245 int tg_pt_gp_nonop_delay_msecs;
246 int tg_pt_gp_trans_delay_msecs;
247 int tg_pt_gp_pref;
248 int tg_pt_gp_write_metadata;
249 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
250#define ALUA_MD_BUF_LEN 1024
251 u32 tg_pt_gp_md_buf_len;
252 u32 tg_pt_gp_members;
253 atomic_t tg_pt_gp_alua_access_state;
254 atomic_t tg_pt_gp_ref_cnt;
255 spinlock_t tg_pt_gp_lock;
256 struct mutex tg_pt_gp_md_mutex;
257 struct se_subsystem_dev *tg_pt_gp_su_dev;
258 struct config_group tg_pt_gp_group;
259 struct list_head tg_pt_gp_list;
260 struct list_head tg_pt_gp_mem_list;
261} ____cacheline_aligned;
262
263struct t10_alua_tg_pt_gp_member {
5dd7ed2e 264 bool tg_pt_gp_assoc;
c66ac9db
NB		 265 atomic_t tg_pt_gp_mem_ref_cnt;
266 spinlock_t tg_pt_gp_mem_lock;
267 struct t10_alua_tg_pt_gp *tg_pt_gp;
268 struct se_port *tg_pt;
269 struct list_head tg_pt_gp_mem_list;
270} ____cacheline_aligned;
271
272struct t10_vpd {
273 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
274 int protocol_identifier_set;
275 u32 protocol_identifier;
276 u32 device_identifier_code_set;
277 u32 association;
278 u32 device_identifier_type;
279 struct list_head vpd_list;
280} ____cacheline_aligned;
281
282struct t10_wwn {
e3d6f909
AG		 283 char vendor[8];
284 char model[16];
285 char revision[4];
286 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
c66ac9db
NB		 287 spinlock_t t10_vpd_lock;
288 struct se_subsystem_dev *t10_sub_dev;
289 struct config_group t10_wwn_group;
290 struct list_head t10_vpd_list;
291} ____cacheline_aligned;
292
293
294/*
25985edc 295 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
c66ac9db
NB		 296 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
297 * mode
298 */
299typedef enum {
300 SPC_PASSTHROUGH,
301 SPC2_RESERVATIONS,
302 SPC3_PERSISTENT_RESERVATIONS
303} t10_reservations_index_t;
304
305struct t10_pr_registration {
306 /* Used for fabrics that contain WWN+ISID */
307#define PR_REG_ISID_LEN 16
308 /* PR_REG_ISID_LEN + ',i,0x' */
309#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
310 char pr_reg_isid[PR_REG_ISID_LEN];
311 /* Used during APTPL metadata reading */
312#define PR_APTPL_MAX_IPORT_LEN 256
313 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
314 /* Used during APTPL metadata reading */
315#define PR_APTPL_MAX_TPORT_LEN 256
316 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
317 /* For writing out live meta data */
318 unsigned char *pr_aptpl_buf;
319 u16 pr_aptpl_rpti;
320 u16 pr_reg_tpgt;
321 /* Reservation effects all target ports */
322 int pr_reg_all_tg_pt;
323 /* Activate Persistence across Target Power Loss */
324 int pr_reg_aptpl;
325 int pr_res_holder;
326 int pr_res_type;
327 int pr_res_scope;
328 /* Used for fabric initiator WWPNs using a ISID */
5dd7ed2e 329 bool isid_present_at_reg;
c66ac9db
NB		 330 u32 pr_res_mapped_lun;
331 u32 pr_aptpl_target_lun;
332 u32 pr_res_generation;
333 u64 pr_reg_bin_isid;
334 u64 pr_res_key;
335 atomic_t pr_res_holders;
336 struct se_node_acl *pr_reg_nacl;
337 struct se_dev_entry *pr_reg_deve;
338 struct se_lun *pr_reg_tg_pt_lun;
339 struct list_head pr_reg_list;
340 struct list_head pr_reg_abort_list;
341 struct list_head pr_reg_aptpl_list;
342 struct list_head pr_reg_atp_list;
343 struct list_head pr_reg_atp_mem_list;
344} ____cacheline_aligned;
345
346/*
347 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
348 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
349 * core_setup_reservations()
350 */
351struct t10_reservation_ops {
352 int (*t10_reservation_check)(struct se_cmd *, u32 *);
353 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
354 int (*t10_pr_register)(struct se_cmd *);
355 int (*t10_pr_clear)(struct se_cmd *);
356};
357
e3d6f909 358struct t10_reservation {
c66ac9db
NB		 359 /* Reservation effects all target ports */
360 int pr_all_tg_pt;
361 /* Activate Persistence across Target Power Loss enabled
362 * for SCSI device */
363 int pr_aptpl_active;
e3d6f909 364 /* Used by struct t10_reservation->pr_aptpl_buf_len */
c66ac9db
NB		 365#define PR_APTPL_BUF_LEN 8192
366 u32 pr_aptpl_buf_len;
367 u32 pr_generation;
368 t10_reservations_index_t res_type;
369 spinlock_t registration_lock;
370 spinlock_t aptpl_reg_lock;
371 /*
372 * This will always be set by one individual I_T Nexus.
373 * However with all_tg_pt=1, other I_T Nexus from the
374 * same initiator can access PR reg/res info on a different
375 * target port.
376 *
377 * There is also the 'All Registrants' case, where there is
378 * a single *pr_res_holder of the reservation, but all
379 * registrations are considered reservation holders.
380 */
381 struct se_node_acl *pr_res_holder;
382 struct list_head registration_list;
383 struct list_head aptpl_reg_list;
384 struct t10_reservation_ops pr_ops;
385} ____cacheline_aligned;
386
387struct se_queue_req {
388 int state;
e3d6f909 389 struct se_cmd *cmd;
c66ac9db
NB		 390 struct list_head qr_list;
391} ____cacheline_aligned;
392
393struct se_queue_obj {
394 atomic_t queue_cnt;
395 spinlock_t cmd_queue_lock;
396 struct list_head qobj_list;
397 wait_queue_head_t thread_wq;
398} ____cacheline_aligned;
399
c66ac9db
NB		 400struct se_task {
401 unsigned char task_sense;
402 struct scatterlist *task_sg;
6708bb27 403 u32 task_sg_nents;
c66ac9db
NB		 404 struct scatterlist *task_sg_bidi;
405 u8 task_scsi_status;
406 u8 task_flags;
407 int task_error_status;
408 int task_state_flags;
5dd7ed2e 409 bool task_padded_sg;
c66ac9db
NB		 410 unsigned long long task_lba;
411 u32 task_no;
412 u32 task_sectors;
413 u32 task_size;
c66ac9db
NB		 414 enum dma_data_direction task_data_direction;
415 struct se_cmd *task_se_cmd;
416 struct se_device *se_dev;
417 struct completion task_stop_comp;
418 atomic_t task_active;
419 atomic_t task_execute_queue;
420 atomic_t task_timeout;
421 atomic_t task_sent;
422 atomic_t task_stop;
423 atomic_t task_state_active;
424 struct timer_list task_timer;
425 struct se_device *se_obj_ptr;
426 struct list_head t_list;
427 struct list_head t_execute_list;
428 struct list_head t_state_list;
429} ____cacheline_aligned;
430
c66ac9db
NB		 431struct se_cmd {
432 /* SAM response code being sent to initiator */
433 u8 scsi_status;
434 u8 scsi_asc;
435 u8 scsi_ascq;
436 u8 scsi_sense_reason;
437 u16 scsi_sense_length;
438 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
439 int alua_nonop_delay;
440 /* See include/linux/dma-mapping.h */
441 enum dma_data_direction data_direction;
442 /* For SAM Task Attribute */
443 int sam_task_attr;
444 /* Transport protocol dependent state, see transport_state_table */
445 enum transport_state_table t_state;
446 /* Transport protocol dependent state for out of order CmdSNs */
447 int deferred_t_state;
448 /* Transport specific error status */
449 int transport_error_status;
450 /* See se_cmd_flags_table */
451 u32 se_cmd_flags;
452 u32 se_ordered_id;
453 /* Total size in bytes associated with command */
454 u32 data_length;
455 /* SCSI Presented Data Transfer Length */
456 u32 cmd_spdtl;
457 u32 residual_count;
458 u32 orig_fe_lun;
459 /* Persistent Reservation key */
460 u64 pr_res_key;
461 atomic_t transport_sent;
462 /* Used for sense data */
463 void *sense_buffer;
5951146d
AG		 464 struct list_head se_delayed_node;
465 struct list_head se_ordered_node;
466 struct list_head se_lun_node;
07bde79a 467 struct list_head se_qf_node;
c66ac9db
NB		 468 struct se_device *se_dev;
469 struct se_dev_entry *se_deve;
470 struct se_device *se_obj_ptr;
471 struct se_device *se_orig_obj_ptr;
472 struct se_lun *se_lun;
473 /* Only used for internal passthrough and legacy TCM fabric modules */
474 struct se_session *se_sess;
475 struct se_tmr_req *se_tmr_req;
5951146d 476 struct list_head se_queue_node;
c66ac9db
NB		 477 struct target_core_fabric_ops *se_tfo;
478 int (*transport_emulate_cdb)(struct se_cmd *);
3a867205 479 void (*transport_split_cdb)(unsigned long long, u32, unsigned char *);
c66ac9db 480 void (*transport_complete_callback)(struct se_cmd *);
07bde79a
NB		 481 int (*transport_qf_callback)(struct se_cmd *);
482
a1d8b49a
AG		 483 unsigned char *t_task_cdb;
484 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
485 unsigned long long t_task_lba;
486 int t_tasks_failed;
487 int t_tasks_fua;
488 bool t_tasks_bidi;
a1d8b49a
AG		 489 u32 t_tasks_sg_chained_no;
490 atomic_t t_fe_count;
491 atomic_t t_se_count;
492 atomic_t t_task_cdbs_left;
493 atomic_t t_task_cdbs_ex_left;
494 atomic_t t_task_cdbs_timeout_left;
495 atomic_t t_task_cdbs_sent;
496 atomic_t t_transport_aborted;
497 atomic_t t_transport_active;
498 atomic_t t_transport_complete;
499 atomic_t t_transport_queue_active;
500 atomic_t t_transport_sent;
501 atomic_t t_transport_stop;
502 atomic_t t_transport_timeout;
503 atomic_t transport_dev_active;
504 atomic_t transport_lun_active;
505 atomic_t transport_lun_fe_stop;
506 atomic_t transport_lun_stop;
507 spinlock_t t_state_lock;
508 struct completion t_transport_stop_comp;
509 struct completion transport_lun_fe_stop_comp;
510 struct completion transport_lun_stop_comp;
511 struct scatterlist *t_tasks_sg_chained;
05d1c7c0 512
a1d8b49a
AG		 513 /*
514 * Used for pre-registered fabric SGL passthrough WRITE and READ
515 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
516 * and other HW target mode fabric modules.
517 */
518 struct scatterlist *t_task_pt_sgl;
519 u32 t_task_pt_sgl_num;
ec98f782
AG		 520
521 struct scatterlist *t_data_sg;
522 unsigned int t_data_nents;
523 struct scatterlist *t_bidi_data_sg;
524 unsigned int t_bidi_data_nents;
525
a1d8b49a 526 /* Used for BIDI READ */
a1d8b49a
AG		 527 struct list_head t_task_list;
528 u32 t_task_list_num;
529
c66ac9db
NB		 530} ____cacheline_aligned;
531
c66ac9db
NB		 532struct se_tmr_req {
533 /* Task Management function to be preformed */
534 u8 function;
535 /* Task Management response to send */
536 u8 response;
537 int call_transport;
538 /* Reference to ITT that Task Mgmt should be preformed */
539 u32 ref_task_tag;
540 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
541 u64 ref_task_lun;
542 void *fabric_tmr_ptr;
543 struct se_cmd *task_cmd;
544 struct se_cmd *ref_cmd;
545 struct se_device *tmr_dev;
546 struct se_lun *tmr_lun;
547 struct list_head tmr_list;
548} ____cacheline_aligned;
549
550struct se_ua {
551 u8 ua_asc;
552 u8 ua_ascq;
553 struct se_node_acl *ua_nacl;
554 struct list_head ua_dev_list;
555 struct list_head ua_nacl_list;
556} ____cacheline_aligned;
557
558struct se_node_acl {
559 char initiatorname[TRANSPORT_IQN_LEN];
560 /* Used to signal demo mode created ACL, disabled by default */
5dd7ed2e 561 bool dynamic_node_acl;
c66ac9db
NB		 562 u32 queue_depth;
563 u32 acl_index;
564 u64 num_cmds;
565 u64 read_bytes;
566 u64 write_bytes;
567 spinlock_t stats_lock;
568 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
569 atomic_t acl_pr_ref_count;
c66ac9db
NB		 570 struct se_dev_entry *device_list;
571 struct se_session *nacl_sess;
572 struct se_portal_group *se_tpg;
573 spinlock_t device_list_lock;
574 spinlock_t nacl_sess_lock;
575 struct config_group acl_group;
576 struct config_group acl_attrib_group;
577 struct config_group acl_auth_group;
578 struct config_group acl_param_group;
12d23384
NB		 579 struct config_group acl_fabric_stat_group;
580 struct config_group *acl_default_groups[5];
c66ac9db
NB		 581 struct list_head acl_list;
582 struct list_head acl_sess_list;
583} ____cacheline_aligned;
584
585struct se_session {
c66ac9db
NB		 586 u64 sess_bin_isid;
587 struct se_node_acl *se_node_acl;
588 struct se_portal_group *se_tpg;
589 void *fabric_sess_ptr;
590 struct list_head sess_list;
591 struct list_head sess_acl_list;
592} ____cacheline_aligned;
593
c66ac9db
NB		 594struct se_device;
595struct se_transform_info;
596struct scatterlist;
597
12d23384
NB		 598struct se_ml_stat_grps {
599 struct config_group stat_group;
600 struct config_group scsi_auth_intr_group;
601 struct config_group scsi_att_intr_port_group;
602};
603
c66ac9db
NB		 604struct se_lun_acl {
605 char initiatorname[TRANSPORT_IQN_LEN];
606 u32 mapped_lun;
607 struct se_node_acl *se_lun_nacl;
608 struct se_lun *se_lun;
609 struct list_head lacl_list;
610 struct config_group se_lun_group;
12d23384 611 struct se_ml_stat_grps ml_stat_grps;
c66ac9db
NB		 612} ____cacheline_aligned;
613
614struct se_dev_entry {
5dd7ed2e 615 bool def_pr_registered;
c66ac9db
NB		 616 /* See transport_lunflags_table */
617 u32 lun_flags;
618 u32 deve_cmds;
619 u32 mapped_lun;
620 u32 average_bytes;
621 u32 last_byte_count;
622 u32 total_cmds;
623 u32 total_bytes;
624 u64 pr_res_key;
625 u64 creation_time;
626 u32 attach_count;
627 u64 read_bytes;
628 u64 write_bytes;
629 atomic_t ua_count;
630 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
631 atomic_t pr_ref_count;
632 struct se_lun_acl *se_lun_acl;
633 spinlock_t ua_lock;
634 struct se_lun *se_lun;
635 struct list_head alua_port_list;
636 struct list_head ua_list;
637} ____cacheline_aligned;
638
639struct se_dev_limits {
640 /* Max supported HW queue depth */
641 u32 hw_queue_depth;
642 /* Max supported virtual queue depth */
643 u32 queue_depth;
644 /* From include/linux/blkdev.h for the other HW/SW limits. */
645 struct queue_limits limits;
646} ____cacheline_aligned;
647
648struct se_dev_attrib {
649 int emulate_dpo;
650 int emulate_fua_write;
651 int emulate_fua_read;
652 int emulate_write_cache;
653 int emulate_ua_intlck_ctrl;
654 int emulate_tas;
655 int emulate_tpu;
656 int emulate_tpws;
657 int emulate_reservations;
658 int emulate_alua;
659 int enforce_pr_isids;
e22a7f07 660 int is_nonrot;
5de619a3 661 int emulate_rest_reord;
c66ac9db
NB		 662 u32 hw_block_size;
663 u32 block_size;
664 u32 hw_max_sectors;
665 u32 max_sectors;
666 u32 optimal_sectors;
667 u32 hw_queue_depth;
668 u32 queue_depth;
669 u32 task_timeout;
670 u32 max_unmap_lba_count;
671 u32 max_unmap_block_desc_count;
672 u32 unmap_granularity;
673 u32 unmap_granularity_alignment;
674 struct se_subsystem_dev *da_sub_dev;
675 struct config_group da_group;
676} ____cacheline_aligned;
677
12d23384
NB		 678struct se_dev_stat_grps {
679 struct config_group stat_group;
680 struct config_group scsi_dev_group;
681 struct config_group scsi_tgt_dev_group;
682 struct config_group scsi_lu_group;
683};
684
c66ac9db
NB		 685struct se_subsystem_dev {
686/* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
687#define SE_DEV_ALIAS_LEN 512
688 unsigned char se_dev_alias[SE_DEV_ALIAS_LEN];
689/* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
690#define SE_UDEV_PATH_LEN 512
691 unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN];
692 u32 su_dev_flags;
693 struct se_hba *se_dev_hba;
694 struct se_device *se_dev_ptr;
695 struct se_dev_attrib se_dev_attrib;
696 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
697 struct t10_alua t10_alua;
698 /* T10 Inquiry and VPD WWN Information */
699 struct t10_wwn t10_wwn;
700 /* T10 SPC-2 + SPC-3 Reservations */
e3d6f909 701 struct t10_reservation t10_pr;
c66ac9db
NB		 702 spinlock_t se_dev_lock;
703 void *se_dev_su_ptr;
e3d6f909 704 struct list_head se_dev_node;
c66ac9db
NB		 705 struct config_group se_dev_group;
706 /* For T10 Reservations */
707 struct config_group se_dev_pr_group;
12d23384
NB		 708 /* For target_core_stat.c groups */
709 struct se_dev_stat_grps dev_stat_grps;
c66ac9db
NB		 710} ____cacheline_aligned;
711
c66ac9db
NB		 712struct se_device {
713 /* Set to 1 if thread is NOT sleeping on thread_sem */
714 u8 thread_active;
715 u8 dev_status_timer_flags;
716 /* RELATIVE TARGET PORT IDENTIFER Counter */
717 u16 dev_rpti_counter;
718 /* Used for SAM Task Attribute ordering */
719 u32 dev_cur_ordered_id;
720 u32 dev_flags;
721 u32 dev_port_count;
722 /* See transport_device_status_table */
723 u32 dev_status;
724 u32 dev_tcq_window_closed;
725 /* Physical device queue depth */
726 u32 queue_depth;
727 /* Used for SPC-2 reservations enforce of ISIDs */
728 u64 dev_res_bin_isid;
729 t10_task_attr_index_t dev_task_attr_type;
730 /* Pointer to transport specific device structure */
731 void *dev_ptr;
732 u32 dev_index;
733 u64 creation_time;
734 u32 num_resets;
735 u64 num_cmds;
736 u64 read_bytes;
737 u64 write_bytes;
738 spinlock_t stats_lock;
739 /* Active commands on this virtual SE device */
740 atomic_t active_cmds;
741 atomic_t simple_cmds;
742 atomic_t depth_left;
743 atomic_t dev_ordered_id;
744 atomic_t dev_tur_active;
745 atomic_t execute_tasks;
746 atomic_t dev_status_thr_count;
747 atomic_t dev_hoq_count;
748 atomic_t dev_ordered_sync;
07bde79a 749 atomic_t dev_qf_count;
c66ac9db
NB		 750 struct se_obj dev_obj;
751 struct se_obj dev_access_obj;
752 struct se_obj dev_export_obj;
e3d6f909 753 struct se_queue_obj dev_queue_obj;
c66ac9db
NB		 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;
07bde79a 765 spinlock_t qf_cmd_lock;
c66ac9db
NB		 766 /* Used for legacy SPC-2 reservationsa */
767 struct se_node_acl *dev_reserved_node_acl;
768 /* Used for ALUA Logical Unit Group membership */
769 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
770 /* Used for SPC-3 Persistent Reservations */
771 struct t10_pr_registration *dev_pr_res_holder;
772 struct list_head dev_sep_list;
773 struct list_head dev_tmr_list;
774 struct timer_list dev_status_timer;
775 /* Pointer to descriptor for processing thread */
776 struct task_struct *process_thread;
777 pid_t process_thread_pid;
778 struct task_struct *dev_mgmt_thread;
07bde79a 779 struct work_struct qf_work_queue;
c66ac9db
NB		 780 struct list_head delayed_cmd_list;
781 struct list_head ordered_cmd_list;
782 struct list_head execute_task_list;
783 struct list_head state_task_list;
07bde79a 784 struct list_head qf_cmd_list;
c66ac9db
NB		 785 /* Pointer to associated SE HBA */
786 struct se_hba *se_hba;
787 struct se_subsystem_dev *se_sub_dev;
788 /* Pointer to template of function pointers for transport */
789 struct se_subsystem_api *transport;
790 /* Linked list for struct se_hba struct se_device list */
791 struct list_head dev_list;
792 /* Linked list for struct se_global->g_se_dev_list */
793 struct list_head g_se_dev_list;
794} ____cacheline_aligned;
795
c66ac9db
NB		 796struct se_hba {
797 u16 hba_tpgt;
798 u32 hba_id;
799 /* See hba_flags_table */
800 u32 hba_flags;
801 /* Virtual iSCSI devices attached. */
802 u32 dev_count;
803 u32 hba_index;
c66ac9db
NB		 804 /* Pointer to transport specific host structure. */
805 void *hba_ptr;
806 /* Linked list for struct se_device */
807 struct list_head hba_dev_list;
e3d6f909 808 struct list_head hba_node;
c66ac9db 809 spinlock_t device_lock;
c66ac9db
NB		 810 struct config_group hba_group;
811 struct mutex hba_access_mutex;
812 struct se_subsystem_api *transport;
813} ____cacheline_aligned;
814
12d23384
NB		 815struct se_port_stat_grps {
816 struct config_group stat_group;
817 struct config_group scsi_port_group;
818 struct config_group scsi_tgt_port_group;
819 struct config_group scsi_transport_group;
820};
821
c66ac9db
NB		 822struct se_lun {
823 /* See transport_lun_status_table */
824 enum transport_lun_status_table lun_status;
825 u32 lun_access;
826 u32 lun_flags;
827 u32 unpacked_lun;
828 atomic_t lun_acl_count;
829 spinlock_t lun_acl_lock;
830 spinlock_t lun_cmd_lock;
831 spinlock_t lun_sep_lock;
832 struct completion lun_shutdown_comp;
833 struct list_head lun_cmd_list;
834 struct list_head lun_acl_list;
835 struct se_device *lun_se_dev;
12d23384 836 struct se_port *lun_sep;
c66ac9db 837 struct config_group lun_group;
12d23384 838 struct se_port_stat_grps port_stat_grps;
c66ac9db
NB		 839} ____cacheline_aligned;
840
e89d15ee
NB		 841struct scsi_port_stats {
842 u64 cmd_pdus;
843 u64 tx_data_octets;
844 u64 rx_data_octets;
845} ____cacheline_aligned;
846
c66ac9db
NB		 847struct se_port {
848 /* RELATIVE TARGET PORT IDENTIFER */
849 u16 sep_rtpi;
850 int sep_tg_pt_secondary_stat;
851 int sep_tg_pt_secondary_write_md;
852 u32 sep_index;
853 struct scsi_port_stats sep_stats;
854 /* Used for ALUA Target Port Groups membership */
855 atomic_t sep_tg_pt_gp_active;
856 atomic_t sep_tg_pt_secondary_offline;
857 /* Used for PR ALL_TG_PT=1 */
858 atomic_t sep_tg_pt_ref_cnt;
859 spinlock_t sep_alua_lock;
860 struct mutex sep_tg_pt_md_mutex;
861 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
862 struct se_lun *sep_lun;
863 struct se_portal_group *sep_tpg;
864 struct list_head sep_alua_list;
865 struct list_head sep_list;
866} ____cacheline_aligned;
867
868struct se_tpg_np {
1f6fe7cb 869 struct se_portal_group *tpg_np_parent;
c66ac9db
NB		 870 struct config_group tpg_np_group;
871} ____cacheline_aligned;
872
873struct se_portal_group {
874 /* Type of target portal group, see transport_tpg_type_table */
875 enum transport_tpg_type_table se_tpg_type;
876 /* Number of ACLed Initiator Nodes for this TPG */
877 u32 num_node_acls;
878 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
879 atomic_t tpg_pr_ref_count;
880 /* Spinlock for adding/removing ACLed Nodes */
881 spinlock_t acl_node_lock;
882 /* Spinlock for adding/removing sessions */
883 spinlock_t session_lock;
884 spinlock_t tpg_lun_lock;
885 /* Pointer to $FABRIC_MOD portal group */
886 void *se_tpg_fabric_ptr;
e3d6f909 887 struct list_head se_tpg_node;
c66ac9db
NB		 888 /* linked list for initiator ACL list */
889 struct list_head acl_node_list;
890 struct se_lun *tpg_lun_list;
891 struct se_lun tpg_virt_lun0;
25985edc 892 /* List of TCM sessions associated wth this TPG */
c66ac9db
NB		 893 struct list_head tpg_sess_list;
894 /* Pointer to $FABRIC_MOD dependent code */
895 struct target_core_fabric_ops *se_tpg_tfo;
896 struct se_wwn *se_tpg_wwn;
897 struct config_group tpg_group;
898 struct config_group *tpg_default_groups[6];
899 struct config_group tpg_lun_group;
900 struct config_group tpg_np_group;
901 struct config_group tpg_acl_group;
902 struct config_group tpg_attrib_group;
903 struct config_group tpg_param_group;
904} ____cacheline_aligned;
905
c66ac9db
NB		 906struct se_wwn {
907 struct target_fabric_configfs *wwn_tf;
908 struct config_group wwn_group;
12d23384
NB		 909 struct config_group *wwn_default_groups[2];
910 struct config_group fabric_stat_group;
c66ac9db
NB		 911} ____cacheline_aligned;
912
c66ac9db 913#endif /* TARGET_CORE_BASE_H */
Linux kernel - Deliverables
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