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1 | #ifndef TARGET_CORE_BASE_H |
2 | #define TARGET_CORE_BASE_H |
3 | |
4 | #include <linux/in.h> |
5 | #include <linux/configfs.h> |
6 | #include <linux/dma-mapping.h> |
7 | #include <linux/blkdev.h> |
8 | #include <scsi/scsi_cmnd.h> |
9 | #include <net/sock.h> |
10 | #include <net/tcp.h> |
11 | |
12 | #define TARGET_CORE_MOD_VERSION "v4.1.0-rc2-ml" |
13 | #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION |
14 | |
15 | /* Maximum Number of LUNs per Target Portal Group */ |
16 | /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ |
17 | #define TRANSPORT_MAX_LUNS_PER_TPG 256 |
18 | /* |
19 | * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. |
20 | * |
21 | * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and |
22 | * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use |
23 | * 16-byte CDBs by default and require an extra allocation for |
24 | * 32-byte CDBs to because of legacy issues. |
25 | * |
26 | * Within TCM Core there are no such legacy limitiations, so we go ahead |
27 | * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() |
28 | * within all TCM Core and subsystem plugin code. |
29 | */ |
30 | #define TCM_MAX_COMMAND_SIZE 32 |
31 | /* |
32 | * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently |
33 | * defined 96, but the real limit is 252 (or 260 including the header) |
34 | */ |
35 | #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE |
36 | /* Used by transport_send_check_condition_and_sense() */ |
37 | #define SPC_SENSE_KEY_OFFSET 2 |
38 | #define SPC_ADD_SENSE_LEN_OFFSET 7 |
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 254 |
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 | /* Attempts before moving from SHORT to LONG */ |
59 | #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 |
60 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ |
61 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ |
62 | |
63 | #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ |
64 | |
65 | /* struct se_dev_attrib sanity values */ |
66 | /* Default max_unmap_lba_count */ |
67 | #define DA_MAX_UNMAP_LBA_COUNT 0 |
68 | /* Default max_unmap_block_desc_count */ |
69 | #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 |
70 | /* Default unmap_granularity */ |
71 | #define DA_UNMAP_GRANULARITY_DEFAULT 0 |
72 | /* Default unmap_granularity_alignment */ |
73 | #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 |
74 | /* Default max_write_same_len, disabled by default */ |
75 | #define DA_MAX_WRITE_SAME_LEN 0 |
76 | /* Default max transfer length */ |
77 | #define DA_FABRIC_MAX_SECTORS 8192 |
78 | /* Use a model alias based on the configfs backend device name */ |
79 | #define DA_EMULATE_MODEL_ALIAS 0 |
80 | /* Emulation for Direct Page Out */ |
81 | #define DA_EMULATE_DPO 0 |
82 | /* Emulation for Forced Unit Access WRITEs */ |
83 | #define DA_EMULATE_FUA_WRITE 1 |
84 | /* Emulation for Forced Unit Access READs */ |
85 | #define DA_EMULATE_FUA_READ 0 |
86 | /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ |
87 | #define DA_EMULATE_WRITE_CACHE 0 |
88 | /* Emulation for UNIT ATTENTION Interlock Control */ |
89 | #define DA_EMULATE_UA_INTLLCK_CTRL 0 |
90 | /* Emulation for TASK_ABORTED status (TAS) by default */ |
91 | #define DA_EMULATE_TAS 1 |
92 | /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ |
93 | #define DA_EMULATE_TPU 0 |
94 | /* |
95 | * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using |
96 | * block/blk-lib.c:blkdev_issue_discard() |
97 | */ |
98 | #define DA_EMULATE_TPWS 0 |
99 | /* No Emulation for PSCSI by default */ |
100 | #define DA_EMULATE_ALUA 0 |
101 | /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ |
102 | #define DA_ENFORCE_PR_ISIDS 1 |
103 | #define DA_STATUS_MAX_SECTORS_MIN 16 |
104 | #define DA_STATUS_MAX_SECTORS_MAX 8192 |
105 | /* By default don't report non-rotating (solid state) medium */ |
106 | #define DA_IS_NONROT 0 |
107 | /* Queue Algorithm Modifier default for restricted reordering in control mode page */ |
108 | #define DA_EMULATE_REST_REORD 0 |
109 | |
110 | #define SE_INQUIRY_BUF 512 |
111 | #define SE_MODE_PAGE_BUF 512 |
112 | #define SE_SENSE_BUF 96 |
113 | |
114 | /* struct se_hba->hba_flags */ |
115 | enum hba_flags_table { |
116 | HBA_FLAGS_INTERNAL_USE = 0x01, |
117 | HBA_FLAGS_PSCSI_MODE = 0x02, |
118 | }; |
119 | |
120 | /* struct se_lun->lun_status */ |
121 | enum transport_lun_status_table { |
122 | TRANSPORT_LUN_STATUS_FREE = 0, |
123 | TRANSPORT_LUN_STATUS_ACTIVE = 1, |
124 | }; |
125 | |
126 | /* struct se_portal_group->se_tpg_type */ |
127 | enum transport_tpg_type_table { |
128 | TRANSPORT_TPG_TYPE_NORMAL = 0, |
129 | TRANSPORT_TPG_TYPE_DISCOVERY = 1, |
130 | }; |
131 | |
132 | /* Special transport agnostic struct se_cmd->t_states */ |
133 | enum transport_state_table { |
134 | TRANSPORT_NO_STATE = 0, |
135 | TRANSPORT_NEW_CMD = 1, |
136 | TRANSPORT_WRITE_PENDING = 3, |
137 | TRANSPORT_PROCESSING = 5, |
138 | TRANSPORT_COMPLETE = 6, |
139 | TRANSPORT_ISTATE_PROCESSING = 11, |
140 | TRANSPORT_COMPLETE_QF_WP = 18, |
141 | TRANSPORT_COMPLETE_QF_OK = 19, |
142 | }; |
143 | |
144 | /* Used for struct se_cmd->se_cmd_flags */ |
145 | enum se_cmd_flags_table { |
146 | SCF_SUPPORTED_SAM_OPCODE = 0x00000001, |
147 | SCF_TRANSPORT_TASK_SENSE = 0x00000002, |
148 | SCF_EMULATED_TASK_SENSE = 0x00000004, |
149 | SCF_SCSI_DATA_CDB = 0x00000008, |
150 | SCF_SCSI_TMR_CDB = 0x00000010, |
151 | SCF_FUA = 0x00000080, |
152 | SCF_SE_LUN_CMD = 0x00000100, |
153 | SCF_BIDI = 0x00000400, |
154 | SCF_SENT_CHECK_CONDITION = 0x00000800, |
155 | SCF_OVERFLOW_BIT = 0x00001000, |
156 | SCF_UNDERFLOW_BIT = 0x00002000, |
157 | SCF_SENT_DELAYED_TAS = 0x00004000, |
158 | SCF_ALUA_NON_OPTIMIZED = 0x00008000, |
159 | SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, |
160 | SCF_ACK_KREF = 0x00040000, |
161 | }; |
162 | |
163 | /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ |
164 | enum transport_lunflags_table { |
165 | TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, |
166 | TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, |
167 | TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, |
168 | TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, |
169 | }; |
170 | |
171 | /* |
172 | * Used by transport_send_check_condition_and_sense() |
173 | * to signal which ASC/ASCQ sense payload should be built. |
174 | */ |
175 | typedef unsigned __bitwise__ sense_reason_t; |
176 | |
177 | enum tcm_sense_reason_table { |
178 | #define R(x) (__force sense_reason_t )(x) |
179 | TCM_NO_SENSE = R(0x00), |
180 | TCM_NON_EXISTENT_LUN = R(0x01), |
181 | TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), |
182 | TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), |
183 | TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), |
184 | TCM_SERVICE_CRC_ERROR = R(0x05), |
185 | TCM_SNACK_REJECTED = R(0x06), |
186 | TCM_SECTOR_COUNT_TOO_MANY = R(0x07), |
187 | TCM_INVALID_CDB_FIELD = R(0x08), |
188 | TCM_INVALID_PARAMETER_LIST = R(0x09), |
189 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), |
190 | TCM_UNKNOWN_MODE_PAGE = R(0x0b), |
191 | TCM_WRITE_PROTECTED = R(0x0c), |
192 | TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), |
193 | TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), |
194 | TCM_CHECK_CONDITION_NOT_READY = R(0x0f), |
195 | TCM_RESERVATION_CONFLICT = R(0x10), |
196 | TCM_ADDRESS_OUT_OF_RANGE = R(0x11), |
197 | TCM_OUT_OF_RESOURCES = R(0x12), |
198 | TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), |
199 | #undef R |
200 | }; |
201 | |
202 | enum target_sc_flags_table { |
203 | TARGET_SCF_BIDI_OP = 0x01, |
204 | TARGET_SCF_ACK_KREF = 0x02, |
205 | TARGET_SCF_UNKNOWN_SIZE = 0x04, |
206 | }; |
207 | |
208 | /* fabric independent task management function values */ |
209 | enum tcm_tmreq_table { |
210 | TMR_ABORT_TASK = 1, |
211 | TMR_ABORT_TASK_SET = 2, |
212 | TMR_CLEAR_ACA = 3, |
213 | TMR_CLEAR_TASK_SET = 4, |
214 | TMR_LUN_RESET = 5, |
215 | TMR_TARGET_WARM_RESET = 6, |
216 | TMR_TARGET_COLD_RESET = 7, |
217 | }; |
218 | |
219 | /* fabric independent task management response values */ |
220 | enum tcm_tmrsp_table { |
221 | TMR_FUNCTION_COMPLETE = 1, |
222 | TMR_TASK_DOES_NOT_EXIST = 2, |
223 | TMR_LUN_DOES_NOT_EXIST = 3, |
224 | TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, |
225 | TMR_FUNCTION_REJECTED = 5, |
226 | }; |
227 | |
228 | /* |
229 | * Used for target SCSI statistics |
230 | */ |
231 | typedef enum { |
232 | SCSI_INST_INDEX, |
233 | SCSI_DEVICE_INDEX, |
234 | SCSI_AUTH_INTR_INDEX, |
235 | SCSI_INDEX_TYPE_MAX |
236 | } scsi_index_t; |
237 | |
238 | struct se_cmd; |
239 | |
240 | struct t10_alua { |
241 | /* ALUA Target Port Group ID */ |
242 | u16 alua_tg_pt_gps_counter; |
243 | u32 alua_tg_pt_gps_count; |
244 | spinlock_t tg_pt_gps_lock; |
245 | struct se_device *t10_dev; |
246 | /* Used for default ALUA Target Port Group */ |
247 | struct t10_alua_tg_pt_gp *default_tg_pt_gp; |
248 | /* Used for default ALUA Target Port Group ConfigFS group */ |
249 | struct config_group alua_tg_pt_gps_group; |
250 | struct list_head tg_pt_gps_list; |
251 | }; |
252 | |
253 | struct t10_alua_lu_gp { |
254 | u16 lu_gp_id; |
255 | int lu_gp_valid_id; |
256 | u32 lu_gp_members; |
257 | atomic_t lu_gp_ref_cnt; |
258 | spinlock_t lu_gp_lock; |
259 | struct config_group lu_gp_group; |
260 | struct list_head lu_gp_node; |
261 | struct list_head lu_gp_mem_list; |
262 | }; |
263 | |
264 | struct t10_alua_lu_gp_member { |
265 | bool lu_gp_assoc; |
266 | atomic_t lu_gp_mem_ref_cnt; |
267 | spinlock_t lu_gp_mem_lock; |
268 | struct t10_alua_lu_gp *lu_gp; |
269 | struct se_device *lu_gp_mem_dev; |
270 | struct list_head lu_gp_mem_list; |
271 | }; |
272 | |
273 | struct t10_alua_tg_pt_gp { |
274 | u16 tg_pt_gp_id; |
275 | int tg_pt_gp_valid_id; |
276 | int tg_pt_gp_alua_access_status; |
277 | int tg_pt_gp_alua_access_type; |
278 | int tg_pt_gp_nonop_delay_msecs; |
279 | int tg_pt_gp_trans_delay_msecs; |
280 | int tg_pt_gp_implict_trans_secs; |
281 | int tg_pt_gp_pref; |
282 | int tg_pt_gp_write_metadata; |
283 | /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ |
284 | #define ALUA_MD_BUF_LEN 1024 |
285 | u32 tg_pt_gp_md_buf_len; |
286 | u32 tg_pt_gp_members; |
287 | atomic_t tg_pt_gp_alua_access_state; |
288 | atomic_t tg_pt_gp_ref_cnt; |
289 | spinlock_t tg_pt_gp_lock; |
290 | struct mutex tg_pt_gp_md_mutex; |
291 | struct se_device *tg_pt_gp_dev; |
292 | struct config_group tg_pt_gp_group; |
293 | struct list_head tg_pt_gp_list; |
294 | struct list_head tg_pt_gp_mem_list; |
295 | }; |
296 | |
297 | struct t10_alua_tg_pt_gp_member { |
298 | bool tg_pt_gp_assoc; |
299 | atomic_t tg_pt_gp_mem_ref_cnt; |
300 | spinlock_t tg_pt_gp_mem_lock; |
301 | struct t10_alua_tg_pt_gp *tg_pt_gp; |
302 | struct se_port *tg_pt; |
303 | struct list_head tg_pt_gp_mem_list; |
304 | }; |
305 | |
306 | struct t10_vpd { |
307 | unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; |
308 | int protocol_identifier_set; |
309 | u32 protocol_identifier; |
310 | u32 device_identifier_code_set; |
311 | u32 association; |
312 | u32 device_identifier_type; |
313 | struct list_head vpd_list; |
314 | }; |
315 | |
316 | struct t10_wwn { |
317 | char vendor[8]; |
318 | char model[16]; |
319 | char revision[4]; |
320 | char unit_serial[INQUIRY_VPD_SERIAL_LEN]; |
321 | spinlock_t t10_vpd_lock; |
322 | struct se_device *t10_dev; |
323 | struct config_group t10_wwn_group; |
324 | struct list_head t10_vpd_list; |
325 | }; |
326 | |
327 | struct t10_pr_registration { |
328 | /* Used for fabrics that contain WWN+ISID */ |
329 | #define PR_REG_ISID_LEN 16 |
330 | /* PR_REG_ISID_LEN + ',i,0x' */ |
331 | #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) |
332 | char pr_reg_isid[PR_REG_ISID_LEN]; |
333 | /* Used during APTPL metadata reading */ |
334 | #define PR_APTPL_MAX_IPORT_LEN 256 |
335 | unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; |
336 | /* Used during APTPL metadata reading */ |
337 | #define PR_APTPL_MAX_TPORT_LEN 256 |
338 | unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; |
339 | u16 pr_aptpl_rpti; |
340 | u16 pr_reg_tpgt; |
341 | /* Reservation effects all target ports */ |
342 | int pr_reg_all_tg_pt; |
343 | /* Activate Persistence across Target Power Loss */ |
344 | int pr_reg_aptpl; |
345 | int pr_res_holder; |
346 | int pr_res_type; |
347 | int pr_res_scope; |
348 | /* Used for fabric initiator WWPNs using a ISID */ |
349 | bool isid_present_at_reg; |
350 | u32 pr_res_mapped_lun; |
351 | u32 pr_aptpl_target_lun; |
352 | u32 pr_res_generation; |
353 | u64 pr_reg_bin_isid; |
354 | u64 pr_res_key; |
355 | atomic_t pr_res_holders; |
356 | struct se_node_acl *pr_reg_nacl; |
357 | struct se_dev_entry *pr_reg_deve; |
358 | struct se_lun *pr_reg_tg_pt_lun; |
359 | struct list_head pr_reg_list; |
360 | struct list_head pr_reg_abort_list; |
361 | struct list_head pr_reg_aptpl_list; |
362 | struct list_head pr_reg_atp_list; |
363 | struct list_head pr_reg_atp_mem_list; |
364 | }; |
365 | |
366 | struct t10_reservation { |
367 | /* Reservation effects all target ports */ |
368 | int pr_all_tg_pt; |
369 | /* Activate Persistence across Target Power Loss enabled |
370 | * for SCSI device */ |
371 | int pr_aptpl_active; |
372 | #define PR_APTPL_BUF_LEN 8192 |
373 | u32 pr_generation; |
374 | spinlock_t registration_lock; |
375 | spinlock_t aptpl_reg_lock; |
376 | /* |
377 | * This will always be set by one individual I_T Nexus. |
378 | * However with all_tg_pt=1, other I_T Nexus from the |
379 | * same initiator can access PR reg/res info on a different |
380 | * target port. |
381 | * |
382 | * There is also the 'All Registrants' case, where there is |
383 | * a single *pr_res_holder of the reservation, but all |
384 | * registrations are considered reservation holders. |
385 | */ |
386 | struct se_node_acl *pr_res_holder; |
387 | struct list_head registration_list; |
388 | struct list_head aptpl_reg_list; |
389 | }; |
390 | |
391 | struct se_tmr_req { |
392 | /* Task Management function to be performed */ |
393 | u8 function; |
394 | /* Task Management response to send */ |
395 | u8 response; |
396 | int call_transport; |
397 | /* Reference to ITT that Task Mgmt should be performed */ |
398 | u32 ref_task_tag; |
399 | void *fabric_tmr_ptr; |
400 | struct se_cmd *task_cmd; |
401 | struct se_device *tmr_dev; |
402 | struct se_lun *tmr_lun; |
403 | struct list_head tmr_list; |
404 | }; |
405 | |
406 | struct se_cmd { |
407 | /* SAM response code being sent to initiator */ |
408 | u8 scsi_status; |
409 | u8 scsi_asc; |
410 | u8 scsi_ascq; |
411 | u16 scsi_sense_length; |
412 | /* Delay for ALUA Active/NonOptimized state access in milliseconds */ |
413 | int alua_nonop_delay; |
414 | /* See include/linux/dma-mapping.h */ |
415 | enum dma_data_direction data_direction; |
416 | /* For SAM Task Attribute */ |
417 | int sam_task_attr; |
418 | /* Transport protocol dependent state, see transport_state_table */ |
419 | enum transport_state_table t_state; |
420 | unsigned cmd_wait_set:1; |
421 | unsigned unknown_data_length:1; |
422 | /* See se_cmd_flags_table */ |
423 | u32 se_cmd_flags; |
424 | u32 se_ordered_id; |
425 | /* Total size in bytes associated with command */ |
426 | u32 data_length; |
427 | u32 residual_count; |
428 | u32 orig_fe_lun; |
429 | /* Persistent Reservation key */ |
430 | u64 pr_res_key; |
431 | /* Used for sense data */ |
432 | void *sense_buffer; |
433 | struct list_head se_delayed_node; |
434 | struct list_head se_lun_node; |
435 | struct list_head se_qf_node; |
436 | struct se_device *se_dev; |
437 | struct se_dev_entry *se_deve; |
438 | struct se_lun *se_lun; |
439 | /* Only used for internal passthrough and legacy TCM fabric modules */ |
440 | struct se_session *se_sess; |
441 | struct se_tmr_req *se_tmr_req; |
442 | struct list_head se_cmd_list; |
443 | struct completion cmd_wait_comp; |
444 | struct kref cmd_kref; |
445 | struct target_core_fabric_ops *se_tfo; |
446 | sense_reason_t (*execute_cmd)(struct se_cmd *); |
447 | void (*transport_complete_callback)(struct se_cmd *); |
448 | |
449 | unsigned char *t_task_cdb; |
450 | unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; |
451 | unsigned long long t_task_lba; |
452 | unsigned int transport_state; |
453 | #define CMD_T_ABORTED (1 << 0) |
454 | #define CMD_T_ACTIVE (1 << 1) |
455 | #define CMD_T_COMPLETE (1 << 2) |
456 | #define CMD_T_SENT (1 << 4) |
457 | #define CMD_T_STOP (1 << 5) |
458 | #define CMD_T_FAILED (1 << 6) |
459 | #define CMD_T_LUN_STOP (1 << 7) |
460 | #define CMD_T_LUN_FE_STOP (1 << 8) |
461 | #define CMD_T_DEV_ACTIVE (1 << 9) |
462 | #define CMD_T_REQUEST_STOP (1 << 10) |
463 | #define CMD_T_BUSY (1 << 11) |
464 | spinlock_t t_state_lock; |
465 | struct completion t_transport_stop_comp; |
466 | struct completion transport_lun_fe_stop_comp; |
467 | struct completion transport_lun_stop_comp; |
468 | |
469 | struct work_struct work; |
470 | |
471 | struct scatterlist *t_data_sg; |
472 | unsigned int t_data_nents; |
473 | void *t_data_vmap; |
474 | struct scatterlist *t_bidi_data_sg; |
475 | unsigned int t_bidi_data_nents; |
476 | |
477 | struct list_head state_list; |
478 | bool state_active; |
479 | |
480 | /* old task stop completion, consider merging with some of the above */ |
481 | struct completion task_stop_comp; |
482 | |
483 | /* backend private data */ |
484 | void *priv; |
485 | }; |
486 | |
487 | struct se_ua { |
488 | u8 ua_asc; |
489 | u8 ua_ascq; |
490 | struct se_node_acl *ua_nacl; |
491 | struct list_head ua_dev_list; |
492 | struct list_head ua_nacl_list; |
493 | }; |
494 | |
495 | struct se_node_acl { |
496 | char initiatorname[TRANSPORT_IQN_LEN]; |
497 | /* Used to signal demo mode created ACL, disabled by default */ |
498 | bool dynamic_node_acl; |
499 | bool acl_stop:1; |
500 | u32 queue_depth; |
501 | u32 acl_index; |
502 | #define MAX_ACL_TAG_SIZE 64 |
503 | char acl_tag[MAX_ACL_TAG_SIZE]; |
504 | u64 num_cmds; |
505 | u64 read_bytes; |
506 | u64 write_bytes; |
507 | spinlock_t stats_lock; |
508 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
509 | atomic_t acl_pr_ref_count; |
510 | struct se_dev_entry **device_list; |
511 | struct se_session *nacl_sess; |
512 | struct se_portal_group *se_tpg; |
513 | spinlock_t device_list_lock; |
514 | spinlock_t nacl_sess_lock; |
515 | struct config_group acl_group; |
516 | struct config_group acl_attrib_group; |
517 | struct config_group acl_auth_group; |
518 | struct config_group acl_param_group; |
519 | struct config_group acl_fabric_stat_group; |
520 | struct config_group *acl_default_groups[5]; |
521 | struct list_head acl_list; |
522 | struct list_head acl_sess_list; |
523 | struct completion acl_free_comp; |
524 | struct kref acl_kref; |
525 | }; |
526 | |
527 | struct se_session { |
528 | unsigned sess_tearing_down:1; |
529 | u64 sess_bin_isid; |
530 | struct se_node_acl *se_node_acl; |
531 | struct se_portal_group *se_tpg; |
532 | void *fabric_sess_ptr; |
533 | struct list_head sess_list; |
534 | struct list_head sess_acl_list; |
535 | struct list_head sess_cmd_list; |
536 | struct list_head sess_wait_list; |
537 | spinlock_t sess_cmd_lock; |
538 | struct kref sess_kref; |
539 | }; |
540 | |
541 | struct se_device; |
542 | struct se_transform_info; |
543 | struct scatterlist; |
544 | |
545 | struct se_ml_stat_grps { |
546 | struct config_group stat_group; |
547 | struct config_group scsi_auth_intr_group; |
548 | struct config_group scsi_att_intr_port_group; |
549 | }; |
550 | |
551 | struct se_lun_acl { |
552 | char initiatorname[TRANSPORT_IQN_LEN]; |
553 | u32 mapped_lun; |
554 | struct se_node_acl *se_lun_nacl; |
555 | struct se_lun *se_lun; |
556 | struct list_head lacl_list; |
557 | struct config_group se_lun_group; |
558 | struct se_ml_stat_grps ml_stat_grps; |
559 | }; |
560 | |
561 | struct se_dev_entry { |
562 | bool def_pr_registered; |
563 | /* See transport_lunflags_table */ |
564 | u32 lun_flags; |
565 | u32 mapped_lun; |
566 | u32 total_cmds; |
567 | u64 pr_res_key; |
568 | u64 creation_time; |
569 | u32 attach_count; |
570 | u64 read_bytes; |
571 | u64 write_bytes; |
572 | atomic_t ua_count; |
573 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
574 | atomic_t pr_ref_count; |
575 | struct se_lun_acl *se_lun_acl; |
576 | spinlock_t ua_lock; |
577 | struct se_lun *se_lun; |
578 | struct list_head alua_port_list; |
579 | struct list_head ua_list; |
580 | }; |
581 | |
582 | struct se_dev_attrib { |
583 | int emulate_model_alias; |
584 | int emulate_dpo; |
585 | int emulate_fua_write; |
586 | int emulate_fua_read; |
587 | int emulate_write_cache; |
588 | int emulate_ua_intlck_ctrl; |
589 | int emulate_tas; |
590 | int emulate_tpu; |
591 | int emulate_tpws; |
592 | int enforce_pr_isids; |
593 | int is_nonrot; |
594 | int emulate_rest_reord; |
595 | u32 hw_block_size; |
596 | u32 block_size; |
597 | u32 hw_max_sectors; |
598 | u32 fabric_max_sectors; |
599 | u32 optimal_sectors; |
600 | u32 hw_queue_depth; |
601 | u32 queue_depth; |
602 | u32 max_unmap_lba_count; |
603 | u32 max_unmap_block_desc_count; |
604 | u32 unmap_granularity; |
605 | u32 unmap_granularity_alignment; |
606 | u32 max_write_same_len; |
607 | struct se_device *da_dev; |
608 | struct config_group da_group; |
609 | }; |
610 | |
611 | struct se_dev_stat_grps { |
612 | struct config_group stat_group; |
613 | struct config_group scsi_dev_group; |
614 | struct config_group scsi_tgt_dev_group; |
615 | struct config_group scsi_lu_group; |
616 | }; |
617 | |
618 | struct se_device { |
619 | #define SE_DEV_LINK_MAGIC 0xfeeddeef |
620 | u32 dev_link_magic; |
621 | /* RELATIVE TARGET PORT IDENTIFER Counter */ |
622 | u16 dev_rpti_counter; |
623 | /* Used for SAM Task Attribute ordering */ |
624 | u32 dev_cur_ordered_id; |
625 | u32 dev_flags; |
626 | #define DF_CONFIGURED 0x00000001 |
627 | #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 |
628 | #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 |
629 | #define DF_USING_UDEV_PATH 0x00000008 |
630 | #define DF_USING_ALIAS 0x00000010 |
631 | u32 dev_port_count; |
632 | /* Physical device queue depth */ |
633 | u32 queue_depth; |
634 | /* Used for SPC-2 reservations enforce of ISIDs */ |
635 | u64 dev_res_bin_isid; |
636 | /* Pointer to transport specific device structure */ |
637 | u32 dev_index; |
638 | u64 creation_time; |
639 | u32 num_resets; |
640 | u64 num_cmds; |
641 | u64 read_bytes; |
642 | u64 write_bytes; |
643 | spinlock_t stats_lock; |
644 | /* Active commands on this virtual SE device */ |
645 | atomic_t simple_cmds; |
646 | atomic_t dev_ordered_id; |
647 | atomic_t dev_ordered_sync; |
648 | atomic_t dev_qf_count; |
649 | int export_count; |
650 | spinlock_t delayed_cmd_lock; |
651 | spinlock_t execute_task_lock; |
652 | spinlock_t dev_reservation_lock; |
653 | unsigned int dev_reservation_flags; |
654 | #define DRF_SPC2_RESERVATIONS 0x00000001 |
655 | #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 |
656 | spinlock_t se_port_lock; |
657 | spinlock_t se_tmr_lock; |
658 | spinlock_t qf_cmd_lock; |
659 | /* Used for legacy SPC-2 reservationsa */ |
660 | struct se_node_acl *dev_reserved_node_acl; |
661 | /* Used for ALUA Logical Unit Group membership */ |
662 | struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; |
663 | /* Used for SPC-3 Persistent Reservations */ |
664 | struct t10_pr_registration *dev_pr_res_holder; |
665 | struct list_head dev_sep_list; |
666 | struct list_head dev_tmr_list; |
667 | struct workqueue_struct *tmr_wq; |
668 | struct work_struct qf_work_queue; |
669 | struct list_head delayed_cmd_list; |
670 | struct list_head state_list; |
671 | struct list_head qf_cmd_list; |
672 | /* Pointer to associated SE HBA */ |
673 | struct se_hba *se_hba; |
674 | /* T10 Inquiry and VPD WWN Information */ |
675 | struct t10_wwn t10_wwn; |
676 | /* T10 Asymmetric Logical Unit Assignment for Target Ports */ |
677 | struct t10_alua t10_alua; |
678 | /* T10 SPC-2 + SPC-3 Reservations */ |
679 | struct t10_reservation t10_pr; |
680 | struct se_dev_attrib dev_attrib; |
681 | struct config_group dev_group; |
682 | struct config_group dev_pr_group; |
683 | struct se_dev_stat_grps dev_stat_grps; |
684 | #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ |
685 | unsigned char dev_alias[SE_DEV_ALIAS_LEN]; |
686 | #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ |
687 | unsigned char udev_path[SE_UDEV_PATH_LEN]; |
688 | /* Pointer to template of function pointers for transport */ |
689 | struct se_subsystem_api *transport; |
690 | /* Linked list for struct se_hba struct se_device list */ |
691 | struct list_head dev_list; |
692 | }; |
693 | |
694 | struct se_hba { |
695 | u16 hba_tpgt; |
696 | u32 hba_id; |
697 | /* See hba_flags_table */ |
698 | u32 hba_flags; |
699 | /* Virtual iSCSI devices attached. */ |
700 | u32 dev_count; |
701 | u32 hba_index; |
702 | /* Pointer to transport specific host structure. */ |
703 | void *hba_ptr; |
704 | struct list_head hba_node; |
705 | spinlock_t device_lock; |
706 | struct config_group hba_group; |
707 | struct mutex hba_access_mutex; |
708 | struct se_subsystem_api *transport; |
709 | }; |
710 | |
711 | struct se_port_stat_grps { |
712 | struct config_group stat_group; |
713 | struct config_group scsi_port_group; |
714 | struct config_group scsi_tgt_port_group; |
715 | struct config_group scsi_transport_group; |
716 | }; |
717 | |
718 | struct se_lun { |
719 | #define SE_LUN_LINK_MAGIC 0xffff7771 |
720 | u32 lun_link_magic; |
721 | /* See transport_lun_status_table */ |
722 | enum transport_lun_status_table lun_status; |
723 | u32 lun_access; |
724 | u32 lun_flags; |
725 | u32 unpacked_lun; |
726 | atomic_t lun_acl_count; |
727 | spinlock_t lun_acl_lock; |
728 | spinlock_t lun_cmd_lock; |
729 | spinlock_t lun_sep_lock; |
730 | struct completion lun_shutdown_comp; |
731 | struct list_head lun_cmd_list; |
732 | struct list_head lun_acl_list; |
733 | struct se_device *lun_se_dev; |
734 | struct se_port *lun_sep; |
735 | struct config_group lun_group; |
736 | struct se_port_stat_grps port_stat_grps; |
737 | }; |
738 | |
739 | struct scsi_port_stats { |
740 | u64 cmd_pdus; |
741 | u64 tx_data_octets; |
742 | u64 rx_data_octets; |
743 | }; |
744 | |
745 | struct se_port { |
746 | /* RELATIVE TARGET PORT IDENTIFER */ |
747 | u16 sep_rtpi; |
748 | int sep_tg_pt_secondary_stat; |
749 | int sep_tg_pt_secondary_write_md; |
750 | u32 sep_index; |
751 | struct scsi_port_stats sep_stats; |
752 | /* Used for ALUA Target Port Groups membership */ |
753 | atomic_t sep_tg_pt_secondary_offline; |
754 | /* Used for PR ALL_TG_PT=1 */ |
755 | atomic_t sep_tg_pt_ref_cnt; |
756 | spinlock_t sep_alua_lock; |
757 | struct mutex sep_tg_pt_md_mutex; |
758 | struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; |
759 | struct se_lun *sep_lun; |
760 | struct se_portal_group *sep_tpg; |
761 | struct list_head sep_alua_list; |
762 | struct list_head sep_list; |
763 | }; |
764 | |
765 | struct se_tpg_np { |
766 | struct se_portal_group *tpg_np_parent; |
767 | struct config_group tpg_np_group; |
768 | }; |
769 | |
770 | struct se_portal_group { |
771 | /* Type of target portal group, see transport_tpg_type_table */ |
772 | enum transport_tpg_type_table se_tpg_type; |
773 | /* Number of ACLed Initiator Nodes for this TPG */ |
774 | u32 num_node_acls; |
775 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
776 | atomic_t tpg_pr_ref_count; |
777 | /* Spinlock for adding/removing ACLed Nodes */ |
778 | spinlock_t acl_node_lock; |
779 | /* Spinlock for adding/removing sessions */ |
780 | spinlock_t session_lock; |
781 | spinlock_t tpg_lun_lock; |
782 | /* Pointer to $FABRIC_MOD portal group */ |
783 | void *se_tpg_fabric_ptr; |
784 | struct list_head se_tpg_node; |
785 | /* linked list for initiator ACL list */ |
786 | struct list_head acl_node_list; |
787 | struct se_lun **tpg_lun_list; |
788 | struct se_lun tpg_virt_lun0; |
789 | /* List of TCM sessions associated wth this TPG */ |
790 | struct list_head tpg_sess_list; |
791 | /* Pointer to $FABRIC_MOD dependent code */ |
792 | struct target_core_fabric_ops *se_tpg_tfo; |
793 | struct se_wwn *se_tpg_wwn; |
794 | struct config_group tpg_group; |
795 | struct config_group *tpg_default_groups[7]; |
796 | struct config_group tpg_lun_group; |
797 | struct config_group tpg_np_group; |
798 | struct config_group tpg_acl_group; |
799 | struct config_group tpg_attrib_group; |
800 | struct config_group tpg_auth_group; |
801 | struct config_group tpg_param_group; |
802 | }; |
803 | |
804 | struct se_wwn { |
805 | struct target_fabric_configfs *wwn_tf; |
806 | struct config_group wwn_group; |
807 | struct config_group *wwn_default_groups[2]; |
808 | struct config_group fabric_stat_group; |
809 | }; |
810 | |
811 | #endif /* TARGET_CORE_BASE_H */ |
812 |
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