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Linux 3.12.39
[linux/fpc-iii.git] / include / target / target_core_base.h
blob38647a3441c98982bc65483059520891b1f97c0e
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 <linux/percpu_ida.h>
9 #include <scsi/scsi_cmnd.h>
10 #include <net/sock.h>
11 #include <net/tcp.h>
12
13 #define TARGET_CORE_MOD_VERSION "v4.1.0"
14 #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
15
16 /* Maximum Number of LUNs per Target Portal Group */
17 /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
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_ADD_SENSE_LEN_OFFSET 7
40 #define SPC_ASC_KEY_OFFSET 12
41 #define SPC_ASCQ_KEY_OFFSET 13
42 #define TRANSPORT_IQN_LEN 224
43 /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
44 #define LU_GROUP_NAME_BUF 256
45 /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
46 #define TG_PT_GROUP_NAME_BUF 256
47 /* Used to parse VPD into struct t10_vpd */
48 #define VPD_TMP_BUF_SIZE 254
49 /* Used by transport_generic_cmd_sequencer() */
50 #define READ_BLOCK_LEN 6
51 #define READ_CAP_LEN 8
52 #define READ_POSITION_LEN 20
53 #define INQUIRY_LEN 36
54 /* Used by transport_get_inquiry_vpd_serial() */
55 #define INQUIRY_VPD_SERIAL_LEN 254
56 /* Used by transport_get_inquiry_vpd_device_ident() */
57 #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
58
59 /* Attempts before moving from SHORT to LONG */
60 #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
61 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
62 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
63
64 #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
65
66 /* struct se_dev_attrib sanity values */
67 /* Default max_unmap_lba_count */
68 #define DA_MAX_UNMAP_LBA_COUNT 0
69 /* Default max_unmap_block_desc_count */
70 #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
71 /* Default unmap_granularity */
72 #define DA_UNMAP_GRANULARITY_DEFAULT 0
73 /* Default unmap_granularity_alignment */
74 #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
75 /* Default max_write_same_len, disabled by default */
76 #define DA_MAX_WRITE_SAME_LEN 0
77 /* Default max transfer length */
78 #define DA_FABRIC_MAX_SECTORS 8192
79 /* Use a model alias based on the configfs backend device name */
80 #define DA_EMULATE_MODEL_ALIAS 0
81 /* Emulation for Direct Page Out */
82 #define DA_EMULATE_DPO 0
83 /* Emulation for Forced Unit Access WRITEs */
84 #define DA_EMULATE_FUA_WRITE 1
85 /* Emulation for Forced Unit Access READs */
86 #define DA_EMULATE_FUA_READ 0
87 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */
88 #define DA_EMULATE_WRITE_CACHE 0
89 /* Emulation for UNIT ATTENTION Interlock Control */
90 #define DA_EMULATE_UA_INTLLCK_CTRL 0
91 /* Emulation for TASK_ABORTED status (TAS) by default */
92 #define DA_EMULATE_TAS 1
93 /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
94 #define DA_EMULATE_TPU 0
95 /*
96 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
97 * block/blk-lib.c:blkdev_issue_discard()
98 */
99 #define DA_EMULATE_TPWS 0
100 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
101 #define DA_EMULATE_CAW 1
102 /* Emulation for 3rd Party Copy (ExtendedCopy) by default */
103 #define DA_EMULATE_3PC 1
104 /* No Emulation for PSCSI by default */
105 #define DA_EMULATE_ALUA 0
106 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
107 #define DA_ENFORCE_PR_ISIDS 1
108 #define DA_STATUS_MAX_SECTORS_MIN 16
109 #define DA_STATUS_MAX_SECTORS_MAX 8192
110 /* By default don't report non-rotating (solid state) medium */
111 #define DA_IS_NONROT 0
112 /* Queue Algorithm Modifier default for restricted reordering in control mode page */
113 #define DA_EMULATE_REST_REORD 0
114
115 #define SE_INQUIRY_BUF 512
116 #define SE_MODE_PAGE_BUF 512
117 #define SE_SENSE_BUF 96
118
119 /* struct se_hba->hba_flags */
120 enum hba_flags_table {
121 HBA_FLAGS_INTERNAL_USE = 0x01,
122 HBA_FLAGS_PSCSI_MODE = 0x02,
123 };
124
125 /* struct se_lun->lun_status */
126 enum transport_lun_status_table {
127 TRANSPORT_LUN_STATUS_FREE = 0,
128 TRANSPORT_LUN_STATUS_ACTIVE = 1,
129 };
130
131 /* struct se_portal_group->se_tpg_type */
132 enum transport_tpg_type_table {
133 TRANSPORT_TPG_TYPE_NORMAL = 0,
134 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
135 };
136
137 /* Special transport agnostic struct se_cmd->t_states */
138 enum transport_state_table {
139 TRANSPORT_NO_STATE = 0,
140 TRANSPORT_NEW_CMD = 1,
141 TRANSPORT_WRITE_PENDING = 3,
142 TRANSPORT_PROCESSING = 5,
143 TRANSPORT_COMPLETE = 6,
144 TRANSPORT_ISTATE_PROCESSING = 11,
145 TRANSPORT_COMPLETE_QF_WP = 18,
146 TRANSPORT_COMPLETE_QF_OK = 19,
147 };
148
149 /* Used for struct se_cmd->se_cmd_flags */
150 enum se_cmd_flags_table {
151 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
152 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
153 SCF_EMULATED_TASK_SENSE = 0x00000004,
154 SCF_SCSI_DATA_CDB = 0x00000008,
155 SCF_SCSI_TMR_CDB = 0x00000010,
156 SCF_FUA = 0x00000080,
157 SCF_SE_LUN_CMD = 0x00000100,
158 SCF_BIDI = 0x00000400,
159 SCF_SENT_CHECK_CONDITION = 0x00000800,
160 SCF_OVERFLOW_BIT = 0x00001000,
161 SCF_UNDERFLOW_BIT = 0x00002000,
162 SCF_SENT_DELAYED_TAS = 0x00004000,
163 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
164 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
165 SCF_ACK_KREF = 0x00040000,
166 SCF_COMPARE_AND_WRITE = 0x00080000,
167 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
168 SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
169 };
170
171 /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
172 enum transport_lunflags_table {
173 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
174 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
175 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
176 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
177 };
178
179 /*
180 * Used by transport_send_check_condition_and_sense()
181 * to signal which ASC/ASCQ sense payload should be built.
182 */
183 typedef unsigned __bitwise__ sense_reason_t;
184
185 enum tcm_sense_reason_table {
186 #define R(x) (__force sense_reason_t )(x)
187 TCM_NO_SENSE = R(0x00),
188 TCM_NON_EXISTENT_LUN = R(0x01),
189 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
190 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
191 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
192 TCM_SERVICE_CRC_ERROR = R(0x05),
193 TCM_SNACK_REJECTED = R(0x06),
194 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
195 TCM_INVALID_CDB_FIELD = R(0x08),
196 TCM_INVALID_PARAMETER_LIST = R(0x09),
197 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
198 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
199 TCM_WRITE_PROTECTED = R(0x0c),
200 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
201 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
202 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
203 TCM_RESERVATION_CONFLICT = R(0x10),
204 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
205 TCM_OUT_OF_RESOURCES = R(0x12),
206 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
207 TCM_MISCOMPARE_VERIFY = R(0x14),
208 #undef R
209 };
210
211 enum target_sc_flags_table {
212 TARGET_SCF_BIDI_OP = 0x01,
213 TARGET_SCF_ACK_KREF = 0x02,
214 TARGET_SCF_UNKNOWN_SIZE = 0x04,
215 };
216
217 /* fabric independent task management function values */
218 enum tcm_tmreq_table {
219 TMR_ABORT_TASK = 1,
220 TMR_ABORT_TASK_SET = 2,
221 TMR_CLEAR_ACA = 3,
222 TMR_CLEAR_TASK_SET = 4,
223 TMR_LUN_RESET = 5,
224 TMR_TARGET_WARM_RESET = 6,
225 TMR_TARGET_COLD_RESET = 7,
226 };
227
228 /* fabric independent task management response values */
229 enum tcm_tmrsp_table {
230 TMR_FUNCTION_COMPLETE = 1,
231 TMR_TASK_DOES_NOT_EXIST = 2,
232 TMR_LUN_DOES_NOT_EXIST = 3,
233 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
234 TMR_FUNCTION_REJECTED = 5,
235 };
236
237 /*
238 * Used for target SCSI statistics
239 */
240 typedef enum {
241 SCSI_INST_INDEX,
242 SCSI_DEVICE_INDEX,
243 SCSI_AUTH_INTR_INDEX,
244 SCSI_INDEX_TYPE_MAX
245 } scsi_index_t;
246
247 struct se_cmd;
248
249 struct t10_alua {
250 /* ALUA Target Port Group ID */
251 u16 alua_tg_pt_gps_counter;
252 u32 alua_tg_pt_gps_count;
253 spinlock_t tg_pt_gps_lock;
254 struct se_device *t10_dev;
255 /* Used for default ALUA Target Port Group */
256 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
257 /* Used for default ALUA Target Port Group ConfigFS group */
258 struct config_group alua_tg_pt_gps_group;
259 struct list_head tg_pt_gps_list;
260 };
261
262 struct t10_alua_lu_gp {
263 u16 lu_gp_id;
264 int lu_gp_valid_id;
265 u32 lu_gp_members;
266 atomic_t lu_gp_ref_cnt;
267 spinlock_t lu_gp_lock;
268 struct config_group lu_gp_group;
269 struct list_head lu_gp_node;
270 struct list_head lu_gp_mem_list;
271 };
272
273 struct t10_alua_lu_gp_member {
274 bool lu_gp_assoc;
275 atomic_t lu_gp_mem_ref_cnt;
276 spinlock_t lu_gp_mem_lock;
277 struct t10_alua_lu_gp *lu_gp;
278 struct se_device *lu_gp_mem_dev;
279 struct list_head lu_gp_mem_list;
280 };
281
282 struct t10_alua_tg_pt_gp {
283 u16 tg_pt_gp_id;
284 int tg_pt_gp_valid_id;
285 int tg_pt_gp_alua_access_status;
286 int tg_pt_gp_alua_access_type;
287 int tg_pt_gp_nonop_delay_msecs;
288 int tg_pt_gp_trans_delay_msecs;
289 int tg_pt_gp_implict_trans_secs;
290 int tg_pt_gp_pref;
291 int tg_pt_gp_write_metadata;
292 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
293 #define ALUA_MD_BUF_LEN 1024
294 u32 tg_pt_gp_md_buf_len;
295 u32 tg_pt_gp_members;
296 atomic_t tg_pt_gp_alua_access_state;
297 atomic_t tg_pt_gp_ref_cnt;
298 spinlock_t tg_pt_gp_lock;
299 struct mutex tg_pt_gp_md_mutex;
300 struct se_device *tg_pt_gp_dev;
301 struct config_group tg_pt_gp_group;
302 struct list_head tg_pt_gp_list;
303 struct list_head tg_pt_gp_mem_list;
304 };
305
306 struct t10_alua_tg_pt_gp_member {
307 bool tg_pt_gp_assoc;
308 atomic_t tg_pt_gp_mem_ref_cnt;
309 spinlock_t tg_pt_gp_mem_lock;
310 struct t10_alua_tg_pt_gp *tg_pt_gp;
311 struct se_port *tg_pt;
312 struct list_head tg_pt_gp_mem_list;
313 };
314
315 struct t10_vpd {
316 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
317 int protocol_identifier_set;
318 u32 protocol_identifier;
319 u32 device_identifier_code_set;
320 u32 association;
321 u32 device_identifier_type;
322 struct list_head vpd_list;
323 };
324
325 struct t10_wwn {
326 char vendor[8];
327 char model[16];
328 char revision[4];
329 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
330 spinlock_t t10_vpd_lock;
331 struct se_device *t10_dev;
332 struct config_group t10_wwn_group;
333 struct list_head t10_vpd_list;
334 };
335
336 struct t10_pr_registration {
337 /* Used for fabrics that contain WWN+ISID */
338 #define PR_REG_ISID_LEN 16
339 /* PR_REG_ISID_LEN + ',i,0x' */
340 #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
341 char pr_reg_isid[PR_REG_ISID_LEN];
342 /* Used during APTPL metadata reading */
343 #define PR_APTPL_MAX_IPORT_LEN 256
344 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
345 /* Used during APTPL metadata reading */
346 #define PR_APTPL_MAX_TPORT_LEN 256
347 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
348 u16 pr_aptpl_rpti;
349 u16 pr_reg_tpgt;
350 /* Reservation effects all target ports */
351 int pr_reg_all_tg_pt;
352 /* Activate Persistence across Target Power Loss */
353 int pr_reg_aptpl;
354 int pr_res_holder;
355 int pr_res_type;
356 int pr_res_scope;
357 /* Used for fabric initiator WWPNs using a ISID */
358 bool isid_present_at_reg;
359 u32 pr_res_mapped_lun;
360 u32 pr_aptpl_target_lun;
361 u32 pr_res_generation;
362 u64 pr_reg_bin_isid;
363 u64 pr_res_key;
364 atomic_t pr_res_holders;
365 struct se_node_acl *pr_reg_nacl;
366 struct se_dev_entry *pr_reg_deve;
367 struct se_lun *pr_reg_tg_pt_lun;
368 struct list_head pr_reg_list;
369 struct list_head pr_reg_abort_list;
370 struct list_head pr_reg_aptpl_list;
371 struct list_head pr_reg_atp_list;
372 struct list_head pr_reg_atp_mem_list;
373 };
374
375 struct t10_reservation {
376 /* Reservation effects all target ports */
377 int pr_all_tg_pt;
378 /* Activate Persistence across Target Power Loss enabled
379 * for SCSI device */
380 int pr_aptpl_active;
381 #define PR_APTPL_BUF_LEN 262144
382 u32 pr_generation;
383 spinlock_t registration_lock;
384 spinlock_t aptpl_reg_lock;
385 /*
386 * This will always be set by one individual I_T Nexus.
387 * However with all_tg_pt=1, other I_T Nexus from the
388 * same initiator can access PR reg/res info on a different
389 * target port.
390 *
391 * There is also the 'All Registrants' case, where there is
392 * a single *pr_res_holder of the reservation, but all
393 * registrations are considered reservation holders.
394 */
395 struct se_node_acl *pr_res_holder;
396 struct list_head registration_list;
397 struct list_head aptpl_reg_list;
398 };
399
400 struct se_tmr_req {
401 /* Task Management function to be performed */
402 u8 function;
403 /* Task Management response to send */
404 u8 response;
405 int call_transport;
406 /* Reference to ITT that Task Mgmt should be performed */
407 u32 ref_task_tag;
408 void *fabric_tmr_ptr;
409 struct se_cmd *task_cmd;
410 struct se_device *tmr_dev;
411 struct se_lun *tmr_lun;
412 struct list_head tmr_list;
413 };
414
415 struct se_cmd {
416 /* SAM response code being sent to initiator */
417 u8 scsi_status;
418 u8 scsi_asc;
419 u8 scsi_ascq;
420 u16 scsi_sense_length;
421 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
422 int alua_nonop_delay;
423 /* See include/linux/dma-mapping.h */
424 enum dma_data_direction data_direction;
425 /* For SAM Task Attribute */
426 int sam_task_attr;
427 /* Used for se_sess->sess_tag_pool */
428 unsigned int map_tag;
429 /* Transport protocol dependent state, see transport_state_table */
430 enum transport_state_table t_state;
431 unsigned cmd_wait_set:1;
432 unsigned unknown_data_length:1;
433 /* See se_cmd_flags_table */
434 u32 se_cmd_flags;
435 u32 se_ordered_id;
436 /* Total size in bytes associated with command */
437 u32 data_length;
438 u32 residual_count;
439 u32 orig_fe_lun;
440 /* Persistent Reservation key */
441 u64 pr_res_key;
442 /* Used for sense data */
443 void *sense_buffer;
444 struct list_head se_delayed_node;
445 struct list_head se_lun_node;
446 struct list_head se_qf_node;
447 struct se_device *se_dev;
448 struct se_dev_entry *se_deve;
449 struct se_lun *se_lun;
450 /* Only used for internal passthrough and legacy TCM fabric modules */
451 struct se_session *se_sess;
452 struct se_tmr_req *se_tmr_req;
453 struct list_head se_cmd_list;
454 struct completion cmd_wait_comp;
455 struct kref cmd_kref;
456 struct target_core_fabric_ops *se_tfo;
457 sense_reason_t (*execute_cmd)(struct se_cmd *);
458 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
459 u32, enum dma_data_direction);
460 sense_reason_t (*transport_complete_callback)(struct se_cmd *);
461
462 unsigned char *t_task_cdb;
463 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
464 unsigned long long t_task_lba;
465 unsigned int t_task_nolb;
466 unsigned int transport_state;
467 #define CMD_T_ABORTED (1 << 0)
468 #define CMD_T_ACTIVE (1 << 1)
469 #define CMD_T_COMPLETE (1 << 2)
470 #define CMD_T_SENT (1 << 4)
471 #define CMD_T_STOP (1 << 5)
472 #define CMD_T_FAILED (1 << 6)
473 #define CMD_T_LUN_STOP (1 << 7)
474 #define CMD_T_LUN_FE_STOP (1 << 8)
475 #define CMD_T_DEV_ACTIVE (1 << 9)
476 #define CMD_T_REQUEST_STOP (1 << 10)
477 #define CMD_T_BUSY (1 << 11)
478 spinlock_t t_state_lock;
479 struct completion t_transport_stop_comp;
480 struct completion transport_lun_fe_stop_comp;
481 struct completion transport_lun_stop_comp;
482
483 struct work_struct work;
484
485 struct scatterlist *t_data_sg;
486 struct scatterlist *t_data_sg_orig;
487 unsigned int t_data_nents;
488 unsigned int t_data_nents_orig;
489 void *t_data_vmap;
490 struct scatterlist *t_bidi_data_sg;
491 unsigned int t_bidi_data_nents;
492
493 struct list_head state_list;
494 bool state_active;
495
496 /* old task stop completion, consider merging with some of the above */
497 struct completion task_stop_comp;
498
499 /* backend private data */
500 void *priv;
501 };
502
503 struct se_ua {
504 u8 ua_asc;
505 u8 ua_ascq;
506 struct se_node_acl *ua_nacl;
507 struct list_head ua_dev_list;
508 struct list_head ua_nacl_list;
509 };
510
511 struct se_node_acl {
512 char initiatorname[TRANSPORT_IQN_LEN];
513 /* Used to signal demo mode created ACL, disabled by default */
514 bool dynamic_node_acl;
515 bool acl_stop:1;
516 u32 queue_depth;
517 u32 acl_index;
518 #define MAX_ACL_TAG_SIZE 64
519 char acl_tag[MAX_ACL_TAG_SIZE];
520 u64 num_cmds;
521 u64 read_bytes;
522 u64 write_bytes;
523 spinlock_t stats_lock;
524 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
525 atomic_t acl_pr_ref_count;
526 struct se_dev_entry **device_list;
527 struct se_session *nacl_sess;
528 struct se_portal_group *se_tpg;
529 spinlock_t device_list_lock;
530 spinlock_t nacl_sess_lock;
531 struct config_group acl_group;
532 struct config_group acl_attrib_group;
533 struct config_group acl_auth_group;
534 struct config_group acl_param_group;
535 struct config_group acl_fabric_stat_group;
536 struct config_group *acl_default_groups[5];
537 struct list_head acl_list;
538 struct list_head acl_sess_list;
539 struct completion acl_free_comp;
540 struct kref acl_kref;
541 };
542
543 struct se_session {
544 unsigned sess_tearing_down:1;
545 u64 sess_bin_isid;
546 struct se_node_acl *se_node_acl;
547 struct se_portal_group *se_tpg;
548 void *fabric_sess_ptr;
549 struct list_head sess_list;
550 struct list_head sess_acl_list;
551 struct list_head sess_cmd_list;
552 struct list_head sess_wait_list;
553 spinlock_t sess_cmd_lock;
554 struct kref sess_kref;
555 void *sess_cmd_map;
556 struct percpu_ida sess_tag_pool;
557 };
558
559 struct se_device;
560 struct se_transform_info;
561 struct scatterlist;
562
563 struct se_ml_stat_grps {
564 struct config_group stat_group;
565 struct config_group scsi_auth_intr_group;
566 struct config_group scsi_att_intr_port_group;
567 };
568
569 struct se_lun_acl {
570 char initiatorname[TRANSPORT_IQN_LEN];
571 u32 mapped_lun;
572 struct se_node_acl *se_lun_nacl;
573 struct se_lun *se_lun;
574 struct list_head lacl_list;
575 struct config_group se_lun_group;
576 struct se_ml_stat_grps ml_stat_grps;
577 };
578
579 struct se_dev_entry {
580 bool def_pr_registered;
581 /* See transport_lunflags_table */
582 u32 lun_flags;
583 u32 mapped_lun;
584 u32 total_cmds;
585 u64 pr_res_key;
586 u64 creation_time;
587 u32 attach_count;
588 u64 read_bytes;
589 u64 write_bytes;
590 atomic_t ua_count;
591 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
592 atomic_t pr_ref_count;
593 struct se_lun_acl *se_lun_acl;
594 spinlock_t ua_lock;
595 struct se_lun *se_lun;
596 struct list_head alua_port_list;
597 struct list_head ua_list;
598 };
599
600 struct se_dev_attrib {
601 int emulate_model_alias;
602 int emulate_dpo;
603 int emulate_fua_write;
604 int emulate_fua_read;
605 int emulate_write_cache;
606 int emulate_ua_intlck_ctrl;
607 int emulate_tas;
608 int emulate_tpu;
609 int emulate_tpws;
610 int emulate_caw;
611 int emulate_3pc;
612 int enforce_pr_isids;
613 int is_nonrot;
614 int emulate_rest_reord;
615 u32 hw_block_size;
616 u32 block_size;
617 u32 hw_max_sectors;
618 u32 fabric_max_sectors;
619 u32 optimal_sectors;
620 u32 hw_queue_depth;
621 u32 queue_depth;
622 u32 max_unmap_lba_count;
623 u32 max_unmap_block_desc_count;
624 u32 unmap_granularity;
625 u32 unmap_granularity_alignment;
626 u32 max_write_same_len;
627 u32 max_bytes_per_io;
628 struct se_device *da_dev;
629 struct config_group da_group;
630 };
631
632 struct se_dev_stat_grps {
633 struct config_group stat_group;
634 struct config_group scsi_dev_group;
635 struct config_group scsi_tgt_dev_group;
636 struct config_group scsi_lu_group;
637 };
638
639 struct se_device {
640 #define SE_DEV_LINK_MAGIC 0xfeeddeef
641 u32 dev_link_magic;
642 /* RELATIVE TARGET PORT IDENTIFER Counter */
643 u16 dev_rpti_counter;
644 /* Used for SAM Task Attribute ordering */
645 u32 dev_cur_ordered_id;
646 u32 dev_flags;
647 #define DF_CONFIGURED 0x00000001
648 #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
649 #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
650 #define DF_USING_UDEV_PATH 0x00000008
651 #define DF_USING_ALIAS 0x00000010
652 u32 dev_port_count;
653 /* Physical device queue depth */
654 u32 queue_depth;
655 /* Used for SPC-2 reservations enforce of ISIDs */
656 u64 dev_res_bin_isid;
657 /* Pointer to transport specific device structure */
658 u32 dev_index;
659 u64 creation_time;
660 u32 num_resets;
661 u64 num_cmds;
662 u64 read_bytes;
663 u64 write_bytes;
664 spinlock_t stats_lock;
665 /* Active commands on this virtual SE device */
666 atomic_t simple_cmds;
667 atomic_t dev_ordered_id;
668 atomic_t dev_ordered_sync;
669 atomic_t dev_qf_count;
670 int export_count;
671 spinlock_t delayed_cmd_lock;
672 spinlock_t execute_task_lock;
673 spinlock_t dev_reservation_lock;
674 unsigned int dev_reservation_flags;
675 #define DRF_SPC2_RESERVATIONS 0x00000001
676 #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
677 spinlock_t se_port_lock;
678 spinlock_t se_tmr_lock;
679 spinlock_t qf_cmd_lock;
680 struct semaphore caw_sem;
681 /* Used for legacy SPC-2 reservationsa */
682 struct se_node_acl *dev_reserved_node_acl;
683 /* Used for ALUA Logical Unit Group membership */
684 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
685 /* Used for SPC-3 Persistent Reservations */
686 struct t10_pr_registration *dev_pr_res_holder;
687 struct list_head dev_sep_list;
688 struct list_head dev_tmr_list;
689 struct workqueue_struct *tmr_wq;
690 struct work_struct qf_work_queue;
691 struct list_head delayed_cmd_list;
692 struct list_head state_list;
693 struct list_head qf_cmd_list;
694 struct list_head g_dev_node;
695 /* Pointer to associated SE HBA */
696 struct se_hba *se_hba;
697 /* T10 Inquiry and VPD WWN Information */
698 struct t10_wwn t10_wwn;
699 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
700 struct t10_alua t10_alua;
701 /* T10 SPC-2 + SPC-3 Reservations */
702 struct t10_reservation t10_pr;
703 struct se_dev_attrib dev_attrib;
704 struct config_group dev_group;
705 struct config_group dev_pr_group;
706 struct se_dev_stat_grps dev_stat_grps;
707 #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
708 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
709 #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
710 unsigned char udev_path[SE_UDEV_PATH_LEN];
711 /* Pointer to template of function pointers for transport */
712 struct se_subsystem_api *transport;
713 /* Linked list for struct se_hba struct se_device list */
714 struct list_head dev_list;
715 };
716
717 struct se_hba {
718 u16 hba_tpgt;
719 u32 hba_id;
720 /* See hba_flags_table */
721 u32 hba_flags;
722 /* Virtual iSCSI devices attached. */
723 u32 dev_count;
724 u32 hba_index;
725 /* Pointer to transport specific host structure. */
726 void *hba_ptr;
727 struct list_head hba_node;
728 spinlock_t device_lock;
729 struct config_group hba_group;
730 struct mutex hba_access_mutex;
731 struct se_subsystem_api *transport;
732 };
733
734 struct se_port_stat_grps {
735 struct config_group stat_group;
736 struct config_group scsi_port_group;
737 struct config_group scsi_tgt_port_group;
738 struct config_group scsi_transport_group;
739 };
740
741 struct se_lun {
742 #define SE_LUN_LINK_MAGIC 0xffff7771
743 u32 lun_link_magic;
744 /* See transport_lun_status_table */
745 enum transport_lun_status_table lun_status;
746 u32 lun_access;
747 u32 lun_flags;
748 u32 unpacked_lun;
749 atomic_t lun_acl_count;
750 spinlock_t lun_acl_lock;
751 spinlock_t lun_cmd_lock;
752 spinlock_t lun_sep_lock;
753 struct completion lun_shutdown_comp;
754 struct list_head lun_cmd_list;
755 struct list_head lun_acl_list;
756 struct se_device *lun_se_dev;
757 struct se_port *lun_sep;
758 struct config_group lun_group;
759 struct se_port_stat_grps port_stat_grps;
760 };
761
762 struct scsi_port_stats {
763 u64 cmd_pdus;
764 u64 tx_data_octets;
765 u64 rx_data_octets;
766 };
767
768 struct se_port {
769 /* RELATIVE TARGET PORT IDENTIFER */
770 u16 sep_rtpi;
771 int sep_tg_pt_secondary_stat;
772 int sep_tg_pt_secondary_write_md;
773 u32 sep_index;
774 struct scsi_port_stats sep_stats;
775 /* Used for ALUA Target Port Groups membership */
776 atomic_t sep_tg_pt_secondary_offline;
777 /* Used for PR ALL_TG_PT=1 */
778 atomic_t sep_tg_pt_ref_cnt;
779 spinlock_t sep_alua_lock;
780 struct mutex sep_tg_pt_md_mutex;
781 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
782 struct se_lun *sep_lun;
783 struct se_portal_group *sep_tpg;
784 struct list_head sep_alua_list;
785 struct list_head sep_list;
786 };
787
788 struct se_tpg_np {
789 struct se_portal_group *tpg_np_parent;
790 struct config_group tpg_np_group;
791 };
792
793 struct se_portal_group {
794 /* Type of target portal group, see transport_tpg_type_table */
795 enum transport_tpg_type_table se_tpg_type;
796 /* Number of ACLed Initiator Nodes for this TPG */
797 u32 num_node_acls;
798 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
799 atomic_t tpg_pr_ref_count;
800 /* Spinlock for adding/removing ACLed Nodes */
801 spinlock_t acl_node_lock;
802 /* Spinlock for adding/removing sessions */
803 spinlock_t session_lock;
804 spinlock_t tpg_lun_lock;
805 /* Pointer to $FABRIC_MOD portal group */
806 void *se_tpg_fabric_ptr;
807 struct list_head se_tpg_node;
808 /* linked list for initiator ACL list */
809 struct list_head acl_node_list;
810 struct se_lun **tpg_lun_list;
811 struct se_lun tpg_virt_lun0;
812 /* List of TCM sessions associated wth this TPG */
813 struct list_head tpg_sess_list;
814 /* Pointer to $FABRIC_MOD dependent code */
815 struct target_core_fabric_ops *se_tpg_tfo;
816 struct se_wwn *se_tpg_wwn;
817 struct config_group tpg_group;
818 struct config_group *tpg_default_groups[7];
819 struct config_group tpg_lun_group;
820 struct config_group tpg_np_group;
821 struct config_group tpg_acl_group;
822 struct config_group tpg_attrib_group;
823 struct config_group tpg_auth_group;
824 struct config_group tpg_param_group;
825 };
826
827 struct se_wwn {
828 struct target_fabric_configfs *wwn_tf;
829 struct config_group wwn_group;
830 struct config_group *wwn_default_groups[2];
831 struct config_group fabric_stat_group;
832 };
833
834 #endif /* TARGET_CORE_BASE_H */
Linux with added FPC-III support