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Linux 3.2-rc4
[GitHub/exynos8895/android_kernel_samsung_universal8895.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 */
6c76bf95
CH		 75enum se_task_flags {
76 TF_ACTIVE = (1 << 0),
77 TF_SENT = (1 << 1),
2e982ab9 78 TF_REQUEST_STOP = (1 << 2),
c66ac9db
NB		 79};
80
81/* Special transport agnostic struct se_cmd->t_states */
82enum transport_state_table {
83 TRANSPORT_NO_STATE = 0,
84 TRANSPORT_NEW_CMD = 1,
c66ac9db
NB		 85 TRANSPORT_WRITE_PENDING = 3,
86 TRANSPORT_PROCESS_WRITE = 4,
87 TRANSPORT_PROCESSING = 5,
35e0e757 88 TRANSPORT_COMPLETE = 6,
c66ac9db 89 TRANSPORT_PROCESS_TMR = 9,
c66ac9db 90 TRANSPORT_ISTATE_PROCESSING = 11,
c66ac9db 91 TRANSPORT_NEW_CMD_MAP = 16,
07bde79a 92 TRANSPORT_COMPLETE_QF_WP = 18,
e057f533 93 TRANSPORT_COMPLETE_QF_OK = 19,
c66ac9db
NB		 94};
95
96/* Used for struct se_cmd->se_cmd_flags */
97enum se_cmd_flags_table {
98 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
99 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
100 SCF_EMULATED_TASK_SENSE = 0x00000004,
101 SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
102 SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
c66ac9db
NB		 103 SCF_SCSI_NON_DATA_CDB = 0x00000040,
104 SCF_SCSI_CDB_EXCEPTION = 0x00000080,
105 SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
c66ac9db
NB		 106 SCF_SE_CMD_FAILED = 0x00000400,
107 SCF_SE_LUN_CMD = 0x00000800,
108 SCF_SE_ALLOW_EOO = 0x00001000,
c66ac9db
NB		 109 SCF_SENT_CHECK_CONDITION = 0x00004000,
110 SCF_OVERFLOW_BIT = 0x00008000,
111 SCF_UNDERFLOW_BIT = 0x00010000,
112 SCF_SENT_DELAYED_TAS = 0x00020000,
113 SCF_ALUA_NON_OPTIMIZED = 0x00040000,
114 SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
5951146d 115 SCF_UNUSED = 0x00100000,
c66ac9db 116 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
c66ac9db
NB		 117};
118
119/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
120enum transport_lunflags_table {
121 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
122 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
123 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
124 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
125};
126
127/* struct se_device->dev_status */
128enum transport_device_status_table {
129 TRANSPORT_DEVICE_ACTIVATED = 0x01,
130 TRANSPORT_DEVICE_DEACTIVATED = 0x02,
131 TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
132 TRANSPORT_DEVICE_SHUTDOWN = 0x08,
133 TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
134 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
135};
136
137/*
138 * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
139 * to signal which ASC/ASCQ sense payload should be built.
140 */
141enum tcm_sense_reason_table {
142 TCM_NON_EXISTENT_LUN = 0x01,
143 TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
144 TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
145 TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
146 TCM_SERVICE_CRC_ERROR = 0x05,
147 TCM_SNACK_REJECTED = 0x06,
148 TCM_SECTOR_COUNT_TOO_MANY = 0x07,
149 TCM_INVALID_CDB_FIELD = 0x08,
150 TCM_INVALID_PARAMETER_LIST = 0x09,
151 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
152 TCM_UNKNOWN_MODE_PAGE = 0x0b,
153 TCM_WRITE_PROTECTED = 0x0c,
154 TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
155 TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
156 TCM_CHECK_CONDITION_NOT_READY = 0x0f,
157};
158
159struct se_obj {
160 atomic_t obj_access_count;
161} ____cacheline_aligned;
162
163/*
164 * Used by TCM Core internally to signal if ALUA emulation is enabled or
165 * disabled, or running in with TCM/pSCSI passthrough mode
166 */
167typedef enum {
168 SPC_ALUA_PASSTHROUGH,
169 SPC2_ALUA_DISABLED,
170 SPC3_ALUA_EMULATED
171} t10_alua_index_t;
172
173/*
174 * Used by TCM Core internally to signal if SAM Task Attribute emulation
175 * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
176 */
177typedef enum {
178 SAM_TASK_ATTR_PASSTHROUGH,
179 SAM_TASK_ATTR_UNTAGGED,
180 SAM_TASK_ATTR_EMULATED
181} t10_task_attr_index_t;
182
e89d15ee
NB		 183/*
184 * Used for target SCSI statistics
185 */
186typedef enum {
187 SCSI_INST_INDEX,
188 SCSI_DEVICE_INDEX,
189 SCSI_AUTH_INTR_INDEX,
190 SCSI_INDEX_TYPE_MAX
191} scsi_index_t;
192
c66ac9db
NB		 193struct se_cmd;
194
195struct t10_alua {
196 t10_alua_index_t alua_type;
197 /* ALUA Target Port Group ID */
198 u16 alua_tg_pt_gps_counter;
199 u32 alua_tg_pt_gps_count;
200 spinlock_t tg_pt_gps_lock;
201 struct se_subsystem_dev *t10_sub_dev;
202 /* Used for default ALUA Target Port Group */
203 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
204 /* Used for default ALUA Target Port Group ConfigFS group */
205 struct config_group alua_tg_pt_gps_group;
206 int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
207 struct list_head tg_pt_gps_list;
208} ____cacheline_aligned;
209
210struct t10_alua_lu_gp {
211 u16 lu_gp_id;
212 int lu_gp_valid_id;
213 u32 lu_gp_members;
214 atomic_t lu_gp_shutdown;
215 atomic_t lu_gp_ref_cnt;
216 spinlock_t lu_gp_lock;
217 struct config_group lu_gp_group;
e3d6f909 218 struct list_head lu_gp_node;
c66ac9db
NB		 219 struct list_head lu_gp_mem_list;
220} ____cacheline_aligned;
221
222struct t10_alua_lu_gp_member {
5dd7ed2e 223 bool lu_gp_assoc;
c66ac9db
NB		 224 atomic_t lu_gp_mem_ref_cnt;
225 spinlock_t lu_gp_mem_lock;
226 struct t10_alua_lu_gp *lu_gp;
227 struct se_device *lu_gp_mem_dev;
228 struct list_head lu_gp_mem_list;
229} ____cacheline_aligned;
230
231struct t10_alua_tg_pt_gp {
232 u16 tg_pt_gp_id;
233 int tg_pt_gp_valid_id;
234 int tg_pt_gp_alua_access_status;
235 int tg_pt_gp_alua_access_type;
236 int tg_pt_gp_nonop_delay_msecs;
237 int tg_pt_gp_trans_delay_msecs;
238 int tg_pt_gp_pref;
239 int tg_pt_gp_write_metadata;
240 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
241#define ALUA_MD_BUF_LEN 1024
242 u32 tg_pt_gp_md_buf_len;
243 u32 tg_pt_gp_members;
244 atomic_t tg_pt_gp_alua_access_state;
245 atomic_t tg_pt_gp_ref_cnt;
246 spinlock_t tg_pt_gp_lock;
247 struct mutex tg_pt_gp_md_mutex;
248 struct se_subsystem_dev *tg_pt_gp_su_dev;
249 struct config_group tg_pt_gp_group;
250 struct list_head tg_pt_gp_list;
251 struct list_head tg_pt_gp_mem_list;
252} ____cacheline_aligned;
253
254struct t10_alua_tg_pt_gp_member {
5dd7ed2e 255 bool tg_pt_gp_assoc;
c66ac9db
NB		 256 atomic_t tg_pt_gp_mem_ref_cnt;
257 spinlock_t tg_pt_gp_mem_lock;
258 struct t10_alua_tg_pt_gp *tg_pt_gp;
259 struct se_port *tg_pt;
260 struct list_head tg_pt_gp_mem_list;
261} ____cacheline_aligned;
262
263struct t10_vpd {
264 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
265 int protocol_identifier_set;
266 u32 protocol_identifier;
267 u32 device_identifier_code_set;
268 u32 association;
269 u32 device_identifier_type;
270 struct list_head vpd_list;
271} ____cacheline_aligned;
272
273struct t10_wwn {
e3d6f909
AG		 274 char vendor[8];
275 char model[16];
276 char revision[4];
277 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
c66ac9db
NB		 278 spinlock_t t10_vpd_lock;
279 struct se_subsystem_dev *t10_sub_dev;
280 struct config_group t10_wwn_group;
281 struct list_head t10_vpd_list;
282} ____cacheline_aligned;
283
284
285/*
25985edc 286 * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
c66ac9db
NB		 287 * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
288 * mode
289 */
290typedef enum {
291 SPC_PASSTHROUGH,
292 SPC2_RESERVATIONS,
293 SPC3_PERSISTENT_RESERVATIONS
294} t10_reservations_index_t;
295
296struct t10_pr_registration {
297 /* Used for fabrics that contain WWN+ISID */
298#define PR_REG_ISID_LEN 16
299 /* PR_REG_ISID_LEN + ',i,0x' */
300#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
301 char pr_reg_isid[PR_REG_ISID_LEN];
302 /* Used during APTPL metadata reading */
303#define PR_APTPL_MAX_IPORT_LEN 256
304 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
305 /* Used during APTPL metadata reading */
306#define PR_APTPL_MAX_TPORT_LEN 256
307 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
308 /* For writing out live meta data */
309 unsigned char *pr_aptpl_buf;
310 u16 pr_aptpl_rpti;
311 u16 pr_reg_tpgt;
312 /* Reservation effects all target ports */
313 int pr_reg_all_tg_pt;
314 /* Activate Persistence across Target Power Loss */
315 int pr_reg_aptpl;
316 int pr_res_holder;
317 int pr_res_type;
318 int pr_res_scope;
319 /* Used for fabric initiator WWPNs using a ISID */
5dd7ed2e 320 bool isid_present_at_reg;
c66ac9db
NB		 321 u32 pr_res_mapped_lun;
322 u32 pr_aptpl_target_lun;
323 u32 pr_res_generation;
324 u64 pr_reg_bin_isid;
325 u64 pr_res_key;
326 atomic_t pr_res_holders;
327 struct se_node_acl *pr_reg_nacl;
328 struct se_dev_entry *pr_reg_deve;
329 struct se_lun *pr_reg_tg_pt_lun;
330 struct list_head pr_reg_list;
331 struct list_head pr_reg_abort_list;
332 struct list_head pr_reg_aptpl_list;
333 struct list_head pr_reg_atp_list;
334 struct list_head pr_reg_atp_mem_list;
335} ____cacheline_aligned;
336
337/*
338 * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
339 * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
340 * core_setup_reservations()
341 */
342struct t10_reservation_ops {
343 int (*t10_reservation_check)(struct se_cmd *, u32 *);
344 int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
345 int (*t10_pr_register)(struct se_cmd *);
346 int (*t10_pr_clear)(struct se_cmd *);
347};
348
e3d6f909 349struct t10_reservation {
c66ac9db
NB		 350 /* Reservation effects all target ports */
351 int pr_all_tg_pt;
352 /* Activate Persistence across Target Power Loss enabled
353 * for SCSI device */
354 int pr_aptpl_active;
e3d6f909 355 /* Used by struct t10_reservation->pr_aptpl_buf_len */
c66ac9db
NB		 356#define PR_APTPL_BUF_LEN 8192
357 u32 pr_aptpl_buf_len;
358 u32 pr_generation;
359 t10_reservations_index_t res_type;
360 spinlock_t registration_lock;
361 spinlock_t aptpl_reg_lock;
362 /*
363 * This will always be set by one individual I_T Nexus.
364 * However with all_tg_pt=1, other I_T Nexus from the
365 * same initiator can access PR reg/res info on a different
366 * target port.
367 *
368 * There is also the 'All Registrants' case, where there is
369 * a single *pr_res_holder of the reservation, but all
370 * registrations are considered reservation holders.
371 */
372 struct se_node_acl *pr_res_holder;
373 struct list_head registration_list;
374 struct list_head aptpl_reg_list;
375 struct t10_reservation_ops pr_ops;
376} ____cacheline_aligned;
377
378struct se_queue_req {
379 int state;
e3d6f909 380 struct se_cmd *cmd;
c66ac9db
NB		 381 struct list_head qr_list;
382} ____cacheline_aligned;
383
384struct se_queue_obj {
385 atomic_t queue_cnt;
386 spinlock_t cmd_queue_lock;
387 struct list_head qobj_list;
388 wait_queue_head_t thread_wq;
389} ____cacheline_aligned;
390
c66ac9db 391struct se_task {
c66ac9db 392 unsigned long long task_lba;
3189b067
CH		 393 u32 task_sectors;
394 u32 task_size;
395 struct se_cmd *task_se_cmd;
396 struct scatterlist *task_sg;
3189b067
CH		 397 u32 task_sg_nents;
398 u16 task_flags;
399 u8 task_sense;
400 u8 task_scsi_status;
401 int task_error_status;
c66ac9db 402 enum dma_data_direction task_data_direction;
3189b067 403 atomic_t task_state_active;
3189b067
CH		 404 struct list_head t_list;
405 struct list_head t_execute_list;
406 struct list_head t_state_list;
407 struct completion task_stop_comp;
c66ac9db
NB		 408} ____cacheline_aligned;
409
c66ac9db
NB		 410struct se_cmd {
411 /* SAM response code being sent to initiator */
412 u8 scsi_status;
413 u8 scsi_asc;
414 u8 scsi_ascq;
415 u8 scsi_sense_reason;
416 u16 scsi_sense_length;
417 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
418 int alua_nonop_delay;
419 /* See include/linux/dma-mapping.h */
420 enum dma_data_direction data_direction;
421 /* For SAM Task Attribute */
422 int sam_task_attr;
423 /* Transport protocol dependent state, see transport_state_table */
424 enum transport_state_table t_state;
c66ac9db
NB		 425 /* Transport specific error status */
426 int transport_error_status;
a17f091d
NB		 427 /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
428 int check_release:1;
429 int cmd_wait_set:1;
c66ac9db
NB		 430 /* See se_cmd_flags_table */
431 u32 se_cmd_flags;
432 u32 se_ordered_id;
433 /* Total size in bytes associated with command */
434 u32 data_length;
435 /* SCSI Presented Data Transfer Length */
436 u32 cmd_spdtl;
437 u32 residual_count;
438 u32 orig_fe_lun;
439 /* Persistent Reservation key */
440 u64 pr_res_key;
c66ac9db
NB		 441 /* Used for sense data */
442 void *sense_buffer;
5951146d
AG		 443 struct list_head se_delayed_node;
444 struct list_head se_ordered_node;
445 struct list_head se_lun_node;
07bde79a 446 struct list_head se_qf_node;
c66ac9db
NB		 447 struct se_device *se_dev;
448 struct se_dev_entry *se_deve;
449 struct se_device *se_obj_ptr;
450 struct se_device *se_orig_obj_ptr;
451 struct se_lun *se_lun;
452 /* Only used for internal passthrough and legacy TCM fabric modules */
453 struct se_session *se_sess;
454 struct se_tmr_req *se_tmr_req;
5951146d 455 struct list_head se_queue_node;
a17f091d
NB		 456 struct list_head se_cmd_list;
457 struct completion cmd_wait_comp;
c66ac9db 458 struct target_core_fabric_ops *se_tfo;
e76a35d6 459 int (*execute_task)(struct se_task *);
c66ac9db 460 void (*transport_complete_callback)(struct se_cmd *);
07bde79a 461
a1d8b49a
AG		 462 unsigned char *t_task_cdb;
463 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
464 unsigned long long t_task_lba;
465 int t_tasks_failed;
466 int t_tasks_fua;
467 bool t_tasks_bidi;
a1d8b49a
AG		 468 u32 t_tasks_sg_chained_no;
469 atomic_t t_fe_count;
470 atomic_t t_se_count;
471 atomic_t t_task_cdbs_left;
472 atomic_t t_task_cdbs_ex_left;
a1d8b49a
AG		 473 atomic_t t_task_cdbs_sent;
474 atomic_t t_transport_aborted;
475 atomic_t t_transport_active;
476 atomic_t t_transport_complete;
477 atomic_t t_transport_queue_active;
478 atomic_t t_transport_sent;
479 atomic_t t_transport_stop;
a1d8b49a
AG		 480 atomic_t transport_dev_active;
481 atomic_t transport_lun_active;
482 atomic_t transport_lun_fe_stop;
483 atomic_t transport_lun_stop;
484 spinlock_t t_state_lock;
485 struct completion t_transport_stop_comp;
486 struct completion transport_lun_fe_stop_comp;
487 struct completion transport_lun_stop_comp;
488 struct scatterlist *t_tasks_sg_chained;
05d1c7c0 489
35e0e757
CH		 490 struct work_struct work;
491
a1d8b49a
AG		 492 /*
493 * Used for pre-registered fabric SGL passthrough WRITE and READ
494 * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
495 * and other HW target mode fabric modules.
496 */
497 struct scatterlist *t_task_pt_sgl;
498 u32 t_task_pt_sgl_num;
ec98f782
AG		 499
500 struct scatterlist *t_data_sg;
501 unsigned int t_data_nents;
502 struct scatterlist *t_bidi_data_sg;
503 unsigned int t_bidi_data_nents;
504
a1d8b49a 505 /* Used for BIDI READ */
a1d8b49a
AG		 506 struct list_head t_task_list;
507 u32 t_task_list_num;
508
c66ac9db
NB		 509} ____cacheline_aligned;
510
c66ac9db
NB		 511struct se_tmr_req {
512 /* Task Management function to be preformed */
513 u8 function;
514 /* Task Management response to send */
515 u8 response;
516 int call_transport;
517 /* Reference to ITT that Task Mgmt should be preformed */
518 u32 ref_task_tag;
519 /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
520 u64 ref_task_lun;
521 void *fabric_tmr_ptr;
522 struct se_cmd *task_cmd;
523 struct se_cmd *ref_cmd;
524 struct se_device *tmr_dev;
525 struct se_lun *tmr_lun;
526 struct list_head tmr_list;
527} ____cacheline_aligned;
528
529struct se_ua {
530 u8 ua_asc;
531 u8 ua_ascq;
532 struct se_node_acl *ua_nacl;
533 struct list_head ua_dev_list;
534 struct list_head ua_nacl_list;
535} ____cacheline_aligned;
536
537struct se_node_acl {
538 char initiatorname[TRANSPORT_IQN_LEN];
539 /* Used to signal demo mode created ACL, disabled by default */
5dd7ed2e 540 bool dynamic_node_acl;
c66ac9db
NB		 541 u32 queue_depth;
542 u32 acl_index;
543 u64 num_cmds;
544 u64 read_bytes;
545 u64 write_bytes;
546 spinlock_t stats_lock;
547 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
548 atomic_t acl_pr_ref_count;
c66ac9db
NB		 549 struct se_dev_entry *device_list;
550 struct se_session *nacl_sess;
551 struct se_portal_group *se_tpg;
552 spinlock_t device_list_lock;
553 spinlock_t nacl_sess_lock;
554 struct config_group acl_group;
555 struct config_group acl_attrib_group;
556 struct config_group acl_auth_group;
557 struct config_group acl_param_group;
12d23384
NB		 558 struct config_group acl_fabric_stat_group;
559 struct config_group *acl_default_groups[5];
c66ac9db
NB		 560 struct list_head acl_list;
561 struct list_head acl_sess_list;
562} ____cacheline_aligned;
563
564struct se_session {
a17f091d 565 int sess_tearing_down:1;
c66ac9db
NB		 566 u64 sess_bin_isid;
567 struct se_node_acl *se_node_acl;
568 struct se_portal_group *se_tpg;
569 void *fabric_sess_ptr;
570 struct list_head sess_list;
571 struct list_head sess_acl_list;
a17f091d
NB		 572 struct list_head sess_cmd_list;
573 struct list_head sess_wait_list;
574 spinlock_t sess_cmd_lock;
c66ac9db
NB		 575} ____cacheline_aligned;
576
c66ac9db
NB		 577struct se_device;
578struct se_transform_info;
579struct scatterlist;
580
12d23384
NB		 581struct se_ml_stat_grps {
582 struct config_group stat_group;
583 struct config_group scsi_auth_intr_group;
584 struct config_group scsi_att_intr_port_group;
585};
586
c66ac9db
NB		 587struct se_lun_acl {
588 char initiatorname[TRANSPORT_IQN_LEN];
589 u32 mapped_lun;
590 struct se_node_acl *se_lun_nacl;
591 struct se_lun *se_lun;
592 struct list_head lacl_list;
593 struct config_group se_lun_group;
12d23384 594 struct se_ml_stat_grps ml_stat_grps;
c66ac9db
NB		 595} ____cacheline_aligned;
596
597struct se_dev_entry {
5dd7ed2e 598 bool def_pr_registered;
c66ac9db
NB		 599 /* See transport_lunflags_table */
600 u32 lun_flags;
601 u32 deve_cmds;
602 u32 mapped_lun;
603 u32 average_bytes;
604 u32 last_byte_count;
605 u32 total_cmds;
606 u32 total_bytes;
607 u64 pr_res_key;
608 u64 creation_time;
609 u32 attach_count;
610 u64 read_bytes;
611 u64 write_bytes;
612 atomic_t ua_count;
613 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
614 atomic_t pr_ref_count;
615 struct se_lun_acl *se_lun_acl;
616 spinlock_t ua_lock;
617 struct se_lun *se_lun;
618 struct list_head alua_port_list;
619 struct list_head ua_list;
620} ____cacheline_aligned;
621
622struct se_dev_limits {
623 /* Max supported HW queue depth */
624 u32 hw_queue_depth;
625 /* Max supported virtual queue depth */
626 u32 queue_depth;
627 /* From include/linux/blkdev.h for the other HW/SW limits. */
628 struct queue_limits limits;
629} ____cacheline_aligned;
630
631struct se_dev_attrib {
632 int emulate_dpo;
633 int emulate_fua_write;
634 int emulate_fua_read;
635 int emulate_write_cache;
636 int emulate_ua_intlck_ctrl;
637 int emulate_tas;
638 int emulate_tpu;
639 int emulate_tpws;
640 int emulate_reservations;
641 int emulate_alua;
642 int enforce_pr_isids;
e22a7f07 643 int is_nonrot;
5de619a3 644 int emulate_rest_reord;
c66ac9db
NB		 645 u32 hw_block_size;
646 u32 block_size;
647 u32 hw_max_sectors;
648 u32 max_sectors;
649 u32 optimal_sectors;
650 u32 hw_queue_depth;
651 u32 queue_depth;
c66ac9db
NB		 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
12d23384
NB		 660struct 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
c66ac9db
NB		 667struct 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 */
e3d6f909 683 struct t10_reservation t10_pr;
c66ac9db
NB		 684 spinlock_t se_dev_lock;
685 void *se_dev_su_ptr;
e3d6f909 686 struct list_head se_dev_node;
c66ac9db
NB		 687 struct config_group se_dev_group;
688 /* For T10 Reservations */
689 struct config_group se_dev_pr_group;
12d23384
NB		 690 /* For target_core_stat.c groups */
691 struct se_dev_stat_grps dev_stat_grps;
c66ac9db
NB		 692} ____cacheline_aligned;
693
c66ac9db
NB		 694struct 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;
07bde79a 731 atomic_t dev_qf_count;
c66ac9db
NB		 732 struct se_obj dev_obj;
733 struct se_obj dev_access_obj;
734 struct se_obj dev_export_obj;
e3d6f909 735 struct se_queue_obj dev_queue_obj;
c66ac9db
NB		 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;
07bde79a 747 spinlock_t qf_cmd_lock;
c66ac9db
NB		 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;
07bde79a 761 struct work_struct qf_work_queue;
c66ac9db
NB		 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;
07bde79a 766 struct list_head qf_cmd_list;
c66ac9db
NB		 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
c66ac9db
NB		 778struct 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;
c66ac9db
NB		 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;
e3d6f909 790 struct list_head hba_node;
c66ac9db 791 spinlock_t device_lock;
c66ac9db
NB		 792 struct config_group hba_group;
793 struct mutex hba_access_mutex;
794 struct se_subsystem_api *transport;
795} ____cacheline_aligned;
796
12d23384
NB		 797struct 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
c66ac9db
NB		 804struct 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;
12d23384 818 struct se_port *lun_sep;
c66ac9db 819 struct config_group lun_group;
12d23384 820 struct se_port_stat_grps port_stat_grps;
c66ac9db
NB		 821} ____cacheline_aligned;
822
e89d15ee
NB		 823struct scsi_port_stats {
824 u64 cmd_pdus;
825 u64 tx_data_octets;
826 u64 rx_data_octets;
827} ____cacheline_aligned;
828
c66ac9db
NB		 829struct 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
850struct se_tpg_np {
1f6fe7cb 851 struct se_portal_group *tpg_np_parent;
c66ac9db
NB		 852 struct config_group tpg_np_group;
853} ____cacheline_aligned;
854
855struct 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;
e3d6f909 869 struct list_head se_tpg_node;
c66ac9db
NB		 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;
25985edc 874 /* List of TCM sessions associated wth this TPG */
c66ac9db
NB		 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
c66ac9db
NB		 888struct se_wwn {
889 struct target_fabric_configfs *wwn_tf;
890 struct config_group wwn_group;
12d23384
NB		 891 struct config_group *wwn_default_groups[2];
892 struct config_group fabric_stat_group;
c66ac9db
NB		 893} ____cacheline_aligned;
894
c66ac9db 895#endif /* TARGET_CORE_BASE_H */