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[mirror_edk2.git] / NetworkPkg / IScsiDxe / IScsiProto.h
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4c5a5e0c 1/** @file\r
2 The header file of iSCSI Protocol that defines many specific data structures.\r
3\r
f75a7f56 4Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r
ecf98fbc 5SPDX-License-Identifier: BSD-2-Clause-Patent\r
4c5a5e0c 6\r
7**/\r
8\r
9#ifndef _ISCSI_PROTO_H_\r
10#define _ISCSI_PROTO_H_\r
11\r
12//\r
13// RFC 1982 Serial Number Arithmetic, SERIAL_BITS = 32\r
14//\r
15#define ISCSI_SEQ_EQ(s1, s2) ((s1) == (s2))\r
16#define ISCSI_SEQ_LT(s1, s2) \\r
17 ( \\r
18 (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) < ((UINT32) 1 << 31)) || \\r
19 (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) > ((UINT32) 1 << 31)) \\r
20 )\r
21#define ISCSI_SEQ_GT(s1, s2) \\r
22 ( \\r
23 (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) > ((UINT32) 1 << 31)) || \\r
24 (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) < ((UINT32) 1 << 31)) \\r
25 )\r
26\r
d1050b9d
MK		 27#define ISCSI_WELL_KNOWN_PORT 3260\r
28#define ISCSI_MAX_CONNS_PER_SESSION 1\r
4c5a5e0c 29\r
d1050b9d
MK		 30#define DEFAULT_MAX_RECV_DATA_SEG_LEN 8192\r
31#define MAX_RECV_DATA_SEG_LEN_IN_FFP 65536\r
32#define DEFAULT_MAX_OUTSTANDING_R2T 1\r
4c5a5e0c 33\r
d1050b9d
MK		 34#define ISCSI_VERSION_MAX 0x00\r
35#define ISCSI_VERSION_MIN 0x00\r
4c5a5e0c 36\r
d1050b9d
MK		 37#define ISCSI_CHECK_MEDIA_LOGIN_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)\r
38#define ISCSI_CHECK_MEDIA_GET_DHCP_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)\r
152f2d5e 39\r
d1050b9d
MK		 40#define ISCSI_REDIRECT_ADDR_START_DELIMITER '['\r
41#define ISCSI_REDIRECT_ADDR_END_DELIMITER ']'\r
9c3dcd0f 42\r
4c5a5e0c 43#define ISCSI_KEY_AUTH_METHOD "AuthMethod"\r
44#define ISCSI_KEY_HEADER_DIGEST "HeaderDigest"\r
45#define ISCSI_KEY_DATA_DIGEST "DataDigest"\r
46#define ISCSI_KEY_MAX_CONNECTIONS "MaxConnections"\r
47#define ISCSI_KEY_TARGET_NAME "TargetName"\r
48#define ISCSI_KEY_INITIATOR_NAME "InitiatorName"\r
49#define ISCSI_KEY_TARGET_ALIAS "TargetAlias"\r
50#define ISCSI_KEY_INITIATOR_ALIAS "InitiatorAlias"\r
51#define ISCSI_KEY_TARGET_ADDRESS "TargetAddress"\r
52#define ISCSI_KEY_INITIAL_R2T "InitialR2T"\r
53#define ISCSI_KEY_IMMEDIATE_DATA "ImmediateData"\r
54#define ISCSI_KEY_TARGET_PORTAL_GROUP_TAG "TargetPortalGroupTag"\r
55#define ISCSI_KEY_MAX_BURST_LENGTH "MaxBurstLength"\r
56#define ISCSI_KEY_FIRST_BURST_LENGTH "FirstBurstLength"\r
57#define ISCSI_KEY_DEFAULT_TIME2WAIT "DefaultTime2Wait"\r
58#define ISCSI_KEY_DEFAULT_TIME2RETAIN "DefaultTime2Retain"\r
59#define ISCSI_KEY_MAX_OUTSTANDING_R2T "MaxOutstandingR2T"\r
60#define ISCSI_KEY_DATA_PDU_IN_ORDER "DataPDUInOrder"\r
61#define ISCSI_KEY_DATA_SEQUENCE_IN_ORDER "DataSequenceInOrder"\r
62#define ISCSI_KEY_ERROR_RECOVERY_LEVEL "ErrorRecoveryLevel"\r
63#define ISCSI_KEY_SESSION_TYPE "SessionType"\r
64#define ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH "MaxRecvDataSegmentLength"\r
65\r
d1050b9d 66#define ISCSI_KEY_VALUE_NONE "None"\r
4c5a5e0c 67\r
68///\r
69/// connection state for initiator\r
70///\r
71\r
d1050b9d
MK		 72#define CONN_STATE_FREE 0\r
73#define CONN_STATE_XPT_WAIT 1\r
74#define CONN_STATE_IN_LOGIN 2\r
75#define CONN_STATE_LOGGED_IN 3\r
76#define CONN_STATE_IN_LOGOUT 4\r
77#define CONN_STATE_LOGOUT_REQUESTED 5\r
78#define CONN_STATE_CLEANUP_WAIT 6\r
79#define CONN_STATE_IN_CLEANUP 7\r
4c5a5e0c 80\r
81///\r
82/// session state for initiator\r
83///\r
d1050b9d
MK		 84#define SESSION_STATE_FREE 0\r
85#define SESSION_STATE_LOGGED_IN 1\r
86#define SESSION_STATE_FAILED 2\r
4c5a5e0c 87\r
d1050b9d 88#define ISCSI_RESERVED_TAG 0xffffffff\r
4c5a5e0c 89\r
d1050b9d
MK		 90#define ISCSI_REQ_IMMEDIATE 0x40\r
91#define ISCSI_OPCODE_MASK 0x3F\r
4c5a5e0c 92\r
93#define ISCSI_SET_OPCODE(PduHdr, Op, Flgs) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) = ((Op) | (Flgs)))\r
94#define ISCSI_GET_OPCODE(PduHdr) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) & ISCSI_OPCODE_MASK)\r
95#define ISCSI_CHECK_OPCODE(PduHdr, Op) ((((PduHdr)->OpCode) & ISCSI_OPCODE_MASK) == (Op))\r
96#define ISCSI_IMMEDIATE_ON(PduHdr) ((PduHdr)->OpCode & ISCSI_REQ_IMMEDIATE)\r
97#define ISCSI_SET_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags |= (BOOLEAN)(Flag))\r
98#define ISCSI_CLEAR_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags &= ~(Flag))\r
99#define ISCSI_FLAG_ON(PduHdr, Flag) ((BOOLEAN) ((((ISCSI_BASIC_HEADER *) (PduHdr))->Flags & (Flag)) == (Flag)))\r
100#define ISCSI_SET_STAGES(PduHdr, Cur, Nxt) ((PduHdr)->Flags = (UINT8) ((PduHdr)->Flags | ((Cur) << 2 | (Nxt))))\r
101#define ISCSI_GET_CURRENT_STAGE(PduHdr) ((UINT8) (((PduHdr)->Flags >> 2) & 0x3))\r
102#define ISCSI_GET_NEXT_STAGE(PduHdr) ((UINT8) (((PduHdr)->Flags) & 0x3))\r
103\r
d1050b9d
MK		 104#define ISCSI_GET_PAD_LEN(DataLen) ((~(DataLen) + 1) & 0x3)\r
105#define ISCSI_ROUNDUP(DataLen) (((DataLen) + 3) &~(0x3))\r
4c5a5e0c 106\r
107#define HTON24(Dst, Src) \\r
108 do { \\r
109 (Dst)[0] = (UINT8) ((UINT8) ((Src) >> 16) & 0xFF); \\r
110 (Dst)[1] = (UINT8) ((UINT8) ((Src) >> 8) & 0xFF); \\r
111 (Dst)[2] = (UINT8) ((UINT8) (Src) & 0xFF); \\r
112 } while (0);\r
113\r
d1050b9d 114#define NTOH24(src) (((src)[0] << 16) | ((src)[1] << 8) | ((src)[2]))\r
4c5a5e0c 115\r
116#define ISCSI_GET_DATASEG_LEN(PduHdr) NTOH24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength)\r
117#define ISCSI_SET_DATASEG_LEN(PduHdr, Len) HTON24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength, (Len))\r
118#define ISCSI_GET_BUFFER_OFFSET(PduHdr) NTOHL (((ISCSI_SCSI_DATA_IN *) (PduHdr))->BufferOffset)\r
119\r
120//\r
121// Initiator opcodes.\r
122//\r
123#define ISCSI_OPCODE_NOP_OUT 0x00\r
124#define ISCSI_OPCODE_SCSI_CMD 0x01\r
125#define ISCSI_OPCODE_SCSI_TMF_REQ 0x02\r
126#define ISCSI_OPCODE_LOGIN_REQ 0x03\r
127#define ISCSI_OPCODE_TEXT_REQ 0x04\r
128#define ISCSI_OPCODE_SCSI_DATA_OUT 0x05\r
129#define ISCSI_OPCODE_LOGOUT_REQ 0x06\r
130#define ISCSI_OPCODE_SNACK_REQ 0x10\r
131#define ISCSI_OPCODE_VENDOR_I0 0x1c\r
132#define ISCSI_OPCODE_VENDOR_I1 0x1d\r
133#define ISCSI_OPCODE_VENDOR_I2 0x1e\r
134\r
135//\r
136// Target opcodes.\r
137//\r
d1050b9d
MK		 138#define ISCSI_OPCODE_NOP_IN 0x20\r
139#define ISCSI_OPCODE_SCSI_RSP 0x21\r
140#define ISCSI_OPCODE_SCSI_TMF_RSP 0x22\r
141#define ISCSI_OPCODE_LOGIN_RSP 0x23\r
142#define ISCSI_OPCODE_TEXT_RSP 0x24\r
143#define ISCSI_OPCODE_SCSI_DATA_IN 0x25\r
144#define ISCSI_OPCODE_LOGOUT_RSP 0x26\r
145#define ISCSI_OPCODE_R2T 0x31\r
146#define ISCSI_OPCODE_ASYNC_MSG 0x32\r
147#define ISCSI_OPCODE_VENDOR_T0 0x3c\r
148#define ISCSI_OPCODE_VENDOR_T1 0x3d\r
149#define ISCSI_OPCODE_VENDOR_T2 0x3e\r
150#define ISCSI_OPCODE_REJECT 0x3f\r
151\r
152#define ISCSI_BHS_FLAG_FINAL 0x80\r
4c5a5e0c 153\r
154//\r
155// Defined AHS types, others are reserved.\r
156//\r
d1050b9d
MK		 157#define ISCSI_AHS_TYPE_EXT_CDB 0x1\r
158#define ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN 0x2\r
4c5a5e0c 159\r
d1050b9d
MK		 160#define SCSI_CMD_PDU_FLAG_READ 0x40\r
161#define SCSI_CMD_PDU_FLAG_WRITE 0x20\r
4c5a5e0c 162\r
163#define ISCSI_CMD_PDU_TASK_ATTR_MASK 0x07\r
164\r
165//\r
166// task attributes\r
167//\r
168#define ISCSI_TASK_ATTR_UNTAGGED 0x00\r
169#define ISCSI_TASK_ATTR_SIMPLE 0x01\r
170#define ISCSI_TASK_ATTR_ORDERD 0x02\r
171#define ISCSI_TASK_ATTR_HOQ 0x03\r
172#define ISCSI_TASK_ATTR_ACA 0x04\r
173\r
174//\r
175// Flag bit definitions in SCSI response.\r
176//\r
d1050b9d
MK		 177#define SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW 0x10\r
178#define SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW 0x08\r
179#define SCSI_RSP_PDU_FLAG_OVERFLOW 0x04\r
180#define SCSI_RSP_PDU_FLAG_UNDERFLOW 0x02\r
4c5a5e0c 181\r
182//\r
183// iSCSI service response codes.\r
184//\r
185#define ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET 0x00\r
186#define ISCSI_SERVICE_RSP_TARGET_FAILURE 0x01\r
187\r
d1050b9d
MK		 188#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_COMPLETE 0\r
189#define ISCSI_TMF_RSP_PDU_RSP_TASK_NOT_EXIST 1\r
190#define ISCSI_TMF_RSP_PDU_RSP_LUN_NOT_EXIST 2\r
191#define ISCSI_TMF_RSP_PDU_RSP_TASK_STILL_ALLEGIANT 3\r
192#define ISCSI_TMF_RSP_PDU_RSP_TASK_REASSGIN_NOT_SUPPORTED 4\r
193#define ISCSI_TMF_RSP_PDU_RSP_NOT_SUPPORTED 5\r
194#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_AHTH_FAILED 6\r
195#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_REJECTED 255\r
4c5a5e0c 196\r
197#define SCSI_DATA_IN_PDU_FLAG_ACKKNOWLEDGE 0x40\r
198#define SCSI_DATA_IN_PDU_FLAG_OVERFLOW SCSI_RSP_PDU_FLAG_OVERFLOW\r
199#define SCSI_DATA_IN_PDU_FLAG_UNDERFLOW SCSI_RSP_PDU_FLAG_UNDERFLOW\r
200#define SCSI_DATA_IN_PDU_FLAG_STATUS_VALID 0x01\r
201\r
d1050b9d
MK		 202#define ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT 0x80\r
203#define ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE 0x40\r
4c5a5e0c 204\r
d1050b9d
MK		 205#define ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT\r
206#define ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE\r
4c5a5e0c 207\r
208#define ISCSI_LOGIN_STATUS_SUCCESS 0\r
209#define ISCSI_LOGIN_STATUS_REDIRECTION 1\r
210#define ISCSI_LOGIN_STATUS_INITIATOR_ERROR 2\r
211#define ISCSI_LOGIN_STATUS_TARGET_ERROR 3\r
212\r
213#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0\r
214#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1\r
215#define ISCSI_LOGOUT_REASON_REMOVE_CONNECTION_FOR_RECOVERY 2\r
216\r
217#define ISCSI_LOGOUT_RESPONSE_SESSION_CLOSED_SUCCESS 0\r
218#define ISCSI_LOGOUT_RESPONSE_CID_NOT_FOUND 1\r
219#define ISCSI_LOGOUT_RESPONSE_RECOVERY_NOT_SUPPORTED 2\r
220#define ISCSI_LOGOUT_RESPONSE_CLEANUP_FAILED 3\r
221\r
222#define ISCSI_SNACK_REQUEST_TYPE_DATA_OR_R2T 0\r
223#define ISCSI_SNACK_REQUEST_TYPE_STATUS 1\r
224#define ISCSI_SNACK_REQUEST_TYPE_DATA_ACK 2\r
225#define ISCSI_SNACK_REQUEST_TYPE_RDATA 3\r
226\r
d1050b9d
MK		 227#define ISCSI_SECURITY_NEGOTIATION 0\r
228#define ISCSI_LOGIN_OPERATIONAL_NEGOTIATION 1\r
229#define ISCSI_FULL_FEATURE_PHASE 3\r
4c5a5e0c 230\r
d1050b9d
MK		 231typedef struct _ISCSI_SESSION ISCSI_SESSION;\r
232typedef struct _ISCSI_CONNECTION ISCSI_CONNECTION;\r
4c5a5e0c 233\r
234typedef enum {\r
235 DataIn = 0,\r
236 DataOut = 1,\r
237 DataBi = 2\r
238} DATA_DIRECTION;\r
239\r
240///\r
241/// iSCSI Basic Header Segment\r
242///\r
243typedef struct _ISCSI_BASIC_HEADER {\r
d1050b9d
MK		 244 UINT8 OpCode;\r
245 UINT8 Flags;\r
246 UINT16 OpCodeSpecific1;\r
247 UINT8 TotalAHSLength;\r
248 UINT8 DataSegmentLength[3];\r
249 UINT8 Lun[8];\r
250 UINT32 InitiatorTaskTag;\r
251 UINT32 OpCodeSpecific2[7];\r
4c5a5e0c 252} ISCSI_BASIC_HEADER;\r
253\r
254typedef struct _ISCSI_ADDTIONAL_HEADER {\r
d1050b9d
MK		 255 UINT16 Length;\r
256 UINT8 Type;\r
257 UINT8 TypeSpecific[1];\r
4c5a5e0c 258} ISCSI_ADDITIONAL_HEADER;\r
259\r
260typedef struct _ISCSI_BI_EXP_READ_DATA_LEN_AHS {\r
d1050b9d
MK		 261 UINT16 Length;\r
262 UINT8 Type;\r
263 UINT8 Reserved;\r
264 UINT32 ExpReadDataLength;\r
4c5a5e0c 265} ISCSI_BI_EXP_READ_DATA_LEN_AHS;\r
266\r
267///\r
268/// SCSI Command\r
269///\r
270typedef struct _SCSI_COMMAND {\r
d1050b9d
MK		 271 UINT8 OpCode;\r
272 UINT8 Flags;\r
273 UINT16 Reserved;\r
274 UINT8 TotalAHSLength;\r
275 UINT8 DataSegmentLength[3];\r
276 UINT8 Lun[8];\r
277 UINT32 InitiatorTaskTag;\r
278 UINT32 ExpDataXferLength;\r
279 UINT32 CmdSN;\r
280 UINT32 ExpStatSN;\r
281 UINT8 Cdb[16];\r
4c5a5e0c 282} SCSI_COMMAND;\r
283\r
284///\r
285/// SCSI Response\r
286///\r
287typedef struct _SCSI_RESPONSE {\r
d1050b9d
MK		 288 UINT8 OpCode;\r
289 UINT8 Flags;\r
290 UINT8 Response;\r
291 UINT8 Status;\r
292 UINT8 TotalAHSLength;\r
293 UINT8 DataSegmentLength[3];\r
294 UINT8 Reserved[8];\r
295 UINT32 InitiatorTaskTag;\r
296 UINT32 SNACKTag;\r
297 UINT32 StatSN;\r
298 UINT32 ExpCmdSN;\r
299 UINT32 MaxCmdSN;\r
300 UINT32 ExpDataSN;\r
301 UINT32 BiReadResidualCount;\r
302 UINT32 ResidualCount;\r
4c5a5e0c 303} SCSI_RESPONSE;\r
304\r
305typedef struct _ISCSI_SENSE_DATA {\r
d1050b9d
MK		 306 UINT16 Length;\r
307 UINT8 Data[2];\r
4c5a5e0c 308} ISCSI_SENSE_DATA;\r
309\r
310///\r
efb56593 311/// iSCSI Task Management Function Request.\r
4c5a5e0c 312///\r
313typedef struct _ISCSI_TMF_REQUEST {\r
d1050b9d
MK		 314 UINT8 OpCode;\r
315 UINT8 Fuction;\r
316 UINT16 Reserved1;\r
317 UINT8 TotalAHSLength;\r
318 UINT8 DataSegmentLength[3];\r
319 UINT8 Lun[8];\r
320 UINT32 InitiatorTaskTag;\r
321 UINT32 ReferencedTaskTag;\r
322 UINT32 CmdSN;\r
323 UINT32 ExpStatSN;\r
324 UINT32 RefCmdSN;\r
325 UINT32 ExpDataSN;\r
326 UINT32 Reserved2[2];\r
4c5a5e0c 327} ISCSI_TMF_REQUEST;\r
328\r
329///\r
330/// iSCSI Task Management Function Response.\r
331///\r
332typedef struct _ISCSI_TMF_RESPONSE {\r
d1050b9d
MK		 333 UINT8 OpCode;\r
334 UINT8 Reserved1;\r
335 UINT8 Response;\r
336 UINT8 Reserved2;\r
337 UINT8 TotalAHSLength;\r
338 UINT8 DataSegmentLength[3];\r
339 UINT32 Reserver3[2];\r
340 UINT32 InitiatorTaskTag;\r
341 UINT32 Reserved4;\r
342 UINT32 StatSN;\r
343 UINT32 ExpCmdSN;\r
344 UINT32 MaxCmdSN;\r
345 UINT32 Reserved[3];\r
4c5a5e0c 346} ISCSI_TMF_RESPONSE;\r
347\r
348///\r
349/// SCSI Data-Out\r
350///\r
351typedef struct _ISCSI_SCSI_DATA_OUT {\r
d1050b9d
MK		 352 UINT8 OpCode;\r
353 UINT8 Reserved1[3];\r
354 UINT8 TotalAHSLength;\r
355 UINT8 DataSegmentLength[3];\r
356 UINT8 Lun[8];\r
357 UINT32 InitiatorTaskTag;\r
358 UINT32 TargetTransferTag;\r
359 UINT32 Reserved2;\r
360 UINT32 ExpStatSN;\r
361 UINT32 Reserved3;\r
362 UINT32 DataSN;\r
363 UINT32 BufferOffset;\r
364 UINT32 Reserved4;\r
4c5a5e0c 365} ISCSI_SCSI_DATA_OUT;\r
366\r
367///\r
368/// SCSI Data-In\r
369///\r
370typedef struct _ISCSI_SCSI_DATA_IN {\r
d1050b9d
MK		 371 UINT8 OpCode;\r
372 UINT8 Flags;\r
373 UINT8 Reserved1;\r
374 UINT8 Status;\r
375 UINT8 TotalAHSLength;\r
376 UINT8 DataSegmentLength[3];\r
377 UINT8 Lun[8];\r
378 UINT32 InitiatorTaskTag;\r
379 UINT32 TargetTransferTag;\r
380 UINT32 StatSN;\r
381 UINT32 ExpCmdSN;\r
382 UINT32 MaxCmdSN;\r
383 UINT32 DataSN;\r
384 UINT32 BufferOffset;\r
385 UINT32 ResidualCount;\r
4c5a5e0c 386} ISCSI_SCSI_DATA_IN;\r
387\r
388///\r
389/// Ready To Transfer.\r
390///\r
391typedef struct _ISCSI_READY_TO_TRANSFER {\r
d1050b9d
MK		 392 UINT8 OpCode;\r
393 UINT8 Reserved1[3];\r
394 UINT8 TotalAHSLength;\r
395 UINT8 DataSegmentLength[3];\r
396 UINT8 Lun[8];\r
397 UINT32 InitiatorTaskTag;\r
398 UINT32 TargetTransferTag;\r
399 UINT32 StatSN;\r
400 UINT32 ExpCmdSN;\r
401 UINT32 MaxCmdSN;\r
402 UINT32 R2TSeqNum;\r
403 UINT32 BufferOffset;\r
404 UINT32 DesiredDataTransferLength;\r
4c5a5e0c 405} ISCSI_READY_TO_TRANSFER;\r
406\r
407typedef struct _ISCSI_ASYNC_MESSAGE {\r
d1050b9d
MK		 408 UINT8 OpCode;\r
409 UINT8 Reserved1[8];\r
410 UINT8 TotalAHSLength;\r
411 UINT8 DataSegmentLength[3];\r
412 UINT8 Lun[8];\r
413 UINT32 InitiatorTaskTag;\r
414 UINT32 Reserved2;\r
415 UINT32 StatSN;\r
416 UINT32 ExpCmdSN;\r
417 UINT32 MaxCmdSN;\r
418 UINT8 AsyncEvent;\r
419 UINT8 AsyncVCode;\r
420 UINT16 Parameter1;\r
421 UINT16 Parameter2;\r
422 UINT16 Parameter3;\r
423 UINT32 Reserved3;\r
4c5a5e0c 424} ISCSI_ASYNC_MESSAGE;\r
425\r
426///\r
427/// Login Request.\r
428///\r
429typedef struct _ISCSI_LOGIN_REQUEST {\r
d1050b9d
MK		 430 UINT8 OpCode;\r
431 UINT8 Flags;\r
432 UINT8 VersionMax;\r
433 UINT8 VersionMin;\r
434 UINT8 TotalAHSLength;\r
435 UINT8 DataSegmentLength[3];\r
436 UINT8 Isid[6];\r
437 UINT16 Tsih;\r
438 UINT32 InitiatorTaskTag;\r
439 UINT16 Cid;\r
440 UINT16 Reserved1;\r
441 UINT32 CmdSN;\r
442 UINT32 ExpStatSN;\r
443 UINT32 Reserved2[4];\r
4c5a5e0c 444} ISCSI_LOGIN_REQUEST;\r
445\r
446///\r
447/// Login Response.\r
448///\r
449typedef struct _ISCSI_LOGIN_RESPONSE {\r
d1050b9d
MK		 450 UINT8 OpCode;\r
451 UINT8 Flags;\r
452 UINT8 VersionMax;\r
453 UINT8 VersionActive;\r
454 UINT8 TotalAHSLength;\r
455 UINT8 DataSegmentLength[3];\r
456 UINT8 Isid[6];\r
457 UINT16 Tsih;\r
458 UINT32 InitiatorTaskTag;\r
459 UINT32 Reserved1;\r
460 UINT32 StatSN;\r
461 UINT32 ExpCmdSN;\r
462 UINT32 MaxCmdSN;\r
463 UINT8 StatusClass;\r
464 UINT8 StatusDetail;\r
465 UINT8 Reserved2[10];\r
4c5a5e0c 466} ISCSI_LOGIN_RESPONSE;\r
467\r
468///\r
469/// Logout Request.\r
470///\r
471typedef struct _ISCSI_LOGOUT_REQUEST {\r
d1050b9d
MK		 472 UINT8 OpCode;\r
473 UINT8 ReasonCode;\r
474 UINT16 Reserved1;\r
475 UINT8 TotalAHSLength;\r
476 UINT8 DataSegmentLength[3];\r
477 UINT32 Reserved2[2];\r
478 UINT32 InitiatorTaskTag;\r
479 UINT16 Cid;\r
480 UINT16 Reserved3;\r
481 UINT32 CmdSN;\r
482 UINT32 ExpStatSN;\r
483 UINT32 Reserved4[4];\r
4c5a5e0c 484} ISCSI_LOGOUT_REQUEST;\r
485\r
486///\r
487/// Logout Response.\r
488///\r
489typedef struct _ISCSI_LOGOUT_RESPONSE {\r
d1050b9d
MK		 490 UINT8 OpCode;\r
491 UINT8 Reserved1;\r
492 UINT8 Response;\r
493 UINT8 Reserved2;\r
494 UINT8 TotalAHSLength;\r
495 UINT8 DataSegmentLength[3];\r
496 UINT32 Reserved3[2];\r
497 UINT32 InitiatorTaskTag;\r
498 UINT32 Reserved4;\r
499 UINT32 StatSN;\r
500 UINT32 ExpCmdSN;\r
501 UINT32 MaxCmdSN;\r
502 UINT32 Reserved5;\r
503 UINT16 Time2Wait;\r
504 UINT16 Time2Retain;\r
505 UINT32 Reserved6;\r
4c5a5e0c 506} ISCSI_LOGOUT_RESPONSE;\r
507\r
508///\r
509/// SNACK Request.\r
510///\r
511typedef struct _ISCSI_SNACK_REQUEST {\r
d1050b9d
MK		 512 UINT8 OpCode;\r
513 UINT8 Type;\r
514 UINT16 Reserved1;\r
515 UINT8 TotalAHSLength;\r
516 UINT8 DataSegmentLength[3];\r
517 UINT8 Lun[8];\r
518 UINT32 InitiatorTaskTag;\r
519 UINT32 TargetTransferTag;\r
520 UINT32 Reserved2;\r
521 UINT32 ExpStatSN;\r
522 UINT32 Reserved[2];\r
523 UINT32 BegRun;\r
524 UINT32 RunLength;\r
4c5a5e0c 525} ISCSI_SNACK_REQUEST;\r
526\r
527///\r
528/// Reject.\r
529///\r
530typedef struct _ISCSI_REJECT {\r
d1050b9d
MK		 531 UINT8 OpCode;\r
532 UINT8 Reserved1;\r
533 UINT8 Reason;\r
534 UINT8 Reserved2;\r
535 UINT8 TotalAHSLength;\r
536 UINT8 DataSegmentLength[3];\r
537 UINT32 Reserved3[2];\r
538 UINT32 InitiatorTaskTag;\r
539 UINT32 Reserved4;\r
540 UINT32 StatSN;\r
541 UINT32 ExpCmdSN;\r
542 UINT32 MaxCmdSN;\r
543 UINT32 DataSN;\r
544 UINT32 Reserved5[2];\r
4c5a5e0c 545} ISCSI_REJECT;\r
546\r
547///\r
548/// NOP-Out.\r
549///\r
550typedef struct _ISCSI_NOP_OUT {\r
d1050b9d
MK		 551 UINT8 OpCode;\r
552 UINT8 Reserved1[3];\r
553 UINT8 TotalAHSLength;\r
554 UINT8 DataSegmentLength[3];\r
555 UINT8 Lun[8];\r
556 UINT32 InitiatorTaskTag;\r
557 UINT32 TargetTransferTag;\r
558 UINT32 CmdSN;\r
559 UINT32 ExpStatSN;\r
560 UINT32 Reserved2[4];\r
4c5a5e0c 561} ISCSI_NOP_OUT;\r
562\r
563///\r
564/// NOP-In.\r
565///\r
566typedef struct _ISCSI_NOP_IN {\r
d1050b9d
MK		 567 UINT8 OpCode;\r
568 UINT8 Reserved1[3];\r
569 UINT8 TotalAHSLength;\r
570 UINT8 DataSegmentLength[3];\r
571 UINT8 Lun[8];\r
572 UINT32 InitiatorTaskTag;\r
573 UINT32 TargetTransferTag;\r
574 UINT32 StatSN;\r
575 UINT32 ExpCmdSN;\r
576 UINT32 MaxCmdSN;\r
577 UINT32 Reserved2[3];\r
4c5a5e0c 578} ISCSI_NOP_IN;\r
579\r
580typedef enum {\r
581 IScsiDigestNone,\r
582 IScsiDigestCRC32\r
583} ISCSI_DIGEST_TYPE;\r
584\r
585typedef struct _ISCSI_XFER_CONTEXT {\r
d1050b9d
MK		 586 UINT32 TargetTransferTag;\r
587 UINT32 Offset;\r
588 UINT32 DesiredLength;\r
589 UINT32 ExpDataSN;\r
4c5a5e0c 590} ISCSI_XFER_CONTEXT;\r
591\r
592typedef struct _ISCSI_IN_BUFFER_CONTEXT {\r
d1050b9d
MK		 593 UINT8 *InData;\r
594 UINT32 InDataLen;\r
4c5a5e0c 595} ISCSI_IN_BUFFER_CONTEXT;\r
596\r
597typedef struct _ISCSI_TCB {\r
d1050b9d
MK		 598 LIST_ENTRY Link;\r
599\r
600 BOOLEAN SoFarInOrder;\r
601 UINT32 ExpDataSN;\r
602 BOOLEAN FbitReceived;\r
603 BOOLEAN StatusXferd;\r
604 UINT32 ActiveR2Ts;\r
605 UINT32 Response;\r
606 CHAR8 *Reason;\r
607 UINT32 InitiatorTaskTag;\r
608 UINT32 CmdSN;\r
609 UINT32 SNACKTag;\r
610\r
611 ISCSI_XFER_CONTEXT XferContext;\r
612\r
613 ISCSI_CONNECTION *Conn;\r
4c5a5e0c 614} ISCSI_TCB;\r
615\r
616typedef struct _ISCSI_KEY_VALUE_PAIR {\r
d1050b9d 617 LIST_ENTRY List;\r
4c5a5e0c 618\r
d1050b9d
MK		 619 CHAR8 *Key;\r
620 CHAR8 *Value;\r
4c5a5e0c 621} ISCSI_KEY_VALUE_PAIR;\r
622\r
623/**\r
f75a7f56 624 Attach the iSCSI connection to the iSCSI session.\r
4c5a5e0c 625\r
626 @param[in, out] Session The iSCSI session.\r
627 @param[in, out] Conn The iSCSI connection.\r
628\r
629**/\r
630VOID\r
631IScsiAttatchConnection (\r
632 IN OUT ISCSI_SESSION *Session,\r
633 IN OUT ISCSI_CONNECTION *Conn\r
634 );\r
635\r
636/**\r
f75a7f56 637 Detach the iSCSI connection from the session it belongs to.\r
4c5a5e0c 638\r
639 @param[in, out] Conn The iSCSI connection.\r
640\r
641**/\r
642VOID\r
643IScsiDetatchConnection (\r
644 IN OUT ISCSI_CONNECTION *Conn\r
645 );\r
646\r
647/**\r
648 This function performs the iSCSI connection login.\r
649\r
650 @param[in, out] Conn The iSCSI connection to login.\r
651 @param Timeout The timeout value in milliseconds.\r
652\r
653 @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r
654 @retval EFI_TIMEOUT Timeout occurred during the login procedure.\r
f75a7f56 655 @retval Others Other errors as indicated.\r
4c5a5e0c 656\r
657**/\r
658EFI_STATUS\r
659IScsiConnLogin (\r
d1050b9d
MK		 660 IN OUT ISCSI_CONNECTION *Conn,\r
661 IN UINT16 Timeout\r
4c5a5e0c 662 );\r
663\r
664/**\r
665 Create a TCP connection for the iSCSI session.\r
666\r
667 @param[in] Session Points to the iSCSI session.\r
668\r
669 @return The newly created iSCSI connection.\r
670\r
671**/\r
672ISCSI_CONNECTION *\r
673IScsiCreateConnection (\r
d1050b9d 674 IN ISCSI_SESSION *Session\r
4c5a5e0c 675 );\r
676\r
677/**\r
678 Destroy an iSCSI connection.\r
679\r
680 @param[in] Conn The connection to destroy.\r
681\r
682**/\r
683VOID\r
684IScsiDestroyConnection (\r
685 IN ISCSI_CONNECTION *Conn\r
686 );\r
687\r
688/**\r
689 Login the iSCSI session.\r
690\r
691 @param[in] Session The iSCSI session\r
692\r
693 @retval EFI_SUCCESS The iSCSI session login procedure finished.\r
694 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
695 @retval EFI_NO_MEDIA There was a media error.\r
696 @retval Others Other errors as indicated.\r
697\r
698**/\r
699EFI_STATUS\r
700IScsiSessionLogin (\r
701 IN ISCSI_SESSION *Session\r
702 );\r
703\r
704/**\r
705 Wait for IPsec negotiation, then try to login the iSCSI session again.\r
706\r
707 @param[in] Session The iSCSI session\r
708\r
709 @retval EFI_SUCCESS The iSCSI session login procedure finished.\r
710 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
711 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
712\r
713**/\r
714EFI_STATUS\r
715IScsiSessionReLogin (\r
716 IN ISCSI_SESSION *Session\r
717 );\r
718\r
719/**\r
720 Build and send the iSCSI login request to the iSCSI target according to\r
721 the current login stage.\r
722\r
723 @param[in] Conn The connection in the iSCSI login phase.\r
724\r
725 @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r
726 connection.\r
727 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
728 @retval EFI_DEVICE_ERROR Some kind of device error happened.\r
729\r
730**/\r
731EFI_STATUS\r
732IScsiSendLoginReq (\r
733 IN ISCSI_CONNECTION *Conn\r
734 );\r
735\r
736/**\r
737 Receive and process the iSCSI login response.\r
738\r
739 @param[in] Conn The connection in the iSCSI login phase.\r
f75a7f56 740\r
4c5a5e0c 741 @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r
742 @retval Others Other errors as indicated.\r
743\r
744**/\r
745EFI_STATUS\r
746IScsiReceiveLoginRsp (\r
747 IN ISCSI_CONNECTION *Conn\r
748 );\r
749\r
750/**\r
751 Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r
752 The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r
753 updated.\r
754\r
755 @param[in, out] Pdu The iSCSI PDU whose data segment the key-value pair will\r
756 be added to.\r
757 @param[in] Key The key name string.\r
758 @param[in] Value The value string.\r
759\r
760 @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r
761 the correspondence length fields are updated.\r
762 @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r
763 pair.\r
764**/\r
765EFI_STATUS\r
766IScsiAddKeyValuePair (\r
d1050b9d
MK		 767 IN OUT NET_BUF *Pdu,\r
768 IN CHAR8 *Key,\r
769 IN CHAR8 *Value\r
4c5a5e0c 770 );\r
771\r
772/**\r
773 Prepare the iSCSI login request to be sent according to the current login status.\r
774\r
775 @param[in, out] Conn The connection in the iSCSI login phase.\r
776\r
777 @return The pointer to the net buffer containing the iSCSI login request built.\r
778 @retval NULL Other errors as indicated.\r
779\r
780**/\r
781NET_BUF *\r
782IScsiPrepareLoginReq (\r
783 IN OUT ISCSI_CONNECTION *Conn\r
784 );\r
785\r
786/**\r
787 Process the iSCSI Login Response.\r
788\r
789 @param[in, out] Conn The connection on which the iSCSI login response is received.\r
790 @param[in, out] Pdu The iSCSI login response PDU.\r
791\r
792 @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r
793 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
794 @retval EFI_MEDIA_CHANGED Target is redirected.\r
795 @retval Others Other errors as indicated.\r
796\r
797**/\r
798EFI_STATUS\r
799IScsiProcessLoginRsp (\r
800 IN OUT ISCSI_CONNECTION *Conn,\r
801 IN OUT NET_BUF *Pdu\r
802 );\r
803\r
804/**\r
805 Updated the target information according the data received in the iSCSI\r
806 login response with an target redirection status.\r
807\r
808 @param[in, out] Session The iSCSI session.\r
809 @param[in] Data The data segment which should contain the\r
810 TargetAddress key-value list.\r
811 @param[in] Len Length of the data.\r
f75a7f56 812\r
4c5a5e0c 813 @retval EFI_SUCCESS The target address is updated.\r
814 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
815 @retval EFI_NOT_FOUND The TargetAddress key is not found.\r
816 @retval Others Other errors as indicated.\r
817\r
818**/\r
819EFI_STATUS\r
820IScsiUpdateTargetAddress (\r
d1050b9d
MK		 821 IN OUT ISCSI_SESSION *Session,\r
822 IN CHAR8 *Data,\r
823 IN UINT32 Len\r
4c5a5e0c 824 );\r
825\r
826/**\r
827 The callback function to free the net buffer list.\r
828\r
829 @param[in] Arg The opaque parameter.\r
830\r
831**/\r
832VOID\r
833EFIAPI\r
834IScsiFreeNbufList (\r
d1050b9d 835 VOID *Arg\r
4c5a5e0c 836 );\r
837\r
838/**\r
839 Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r
840 an optional data segment. The two parts will be put into two blocks of buffers in the\r
841 net buffer. The digest check will be conducted in this function if needed and the digests\r
842 will be trimmed from the PDU buffer.\r
843\r
844 @param[in] Conn The iSCSI connection to receive data from.\r
845 @param[out] Pdu The received iSCSI pdu.\r
846 @param[in] Context The context used to describe information on the caller provided\r
847 buffer to receive data segment of the iSCSI pdu, it's optional.\r
848 @param[in] HeaderDigest Whether there will be header digest received.\r
849 @param[in] DataDigest Whether there will be data digest.\r
850 @param[in] TimeoutEvent The timeout event, it's optional.\r
851\r
852 @retval EFI_SUCCESS An iSCSI pdu is received.\r
853 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
854 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error occurred.\r
855 @retval Others Other errors as indicated.\r
856\r
857**/\r
858EFI_STATUS\r
859IScsiReceivePdu (\r
d1050b9d
MK		 860 IN ISCSI_CONNECTION *Conn,\r
861 OUT NET_BUF **Pdu,\r
862 IN ISCSI_IN_BUFFER_CONTEXT *Context OPTIONAL,\r
863 IN BOOLEAN HeaderDigest,\r
864 IN BOOLEAN DataDigest,\r
865 IN EFI_EVENT TimeoutEvent OPTIONAL\r
4c5a5e0c 866 );\r
867\r
868/**\r
75acfab6 869 Check and get the result of the parameter negotiation.\r
4c5a5e0c 870\r
871 @param[in, out] Conn The connection in iSCSI login.\r
872\r
efb56593 873 @retval EFI_SUCCESS The parameter check is passed and negotiation is finished.\r
4c5a5e0c 874 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error occurred.\r
875 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
876\r
877**/\r
878EFI_STATUS\r
879IScsiCheckOpParams (\r
880 IN OUT ISCSI_CONNECTION *Conn\r
881 );\r
882\r
883/**\r
75acfab6 884 Fill the operational parameters.\r
4c5a5e0c 885\r
886 @param[in] Conn The connection in iSCSI login.\r
887 @param[in, out] Pdu The iSCSI login request PDU to fill the parameters.\r
888\r
889**/\r
890VOID\r
891IScsiFillOpParams (\r
892 IN ISCSI_CONNECTION *Conn,\r
893 IN OUT NET_BUF *Pdu\r
894 );\r
895\r
896/**\r
897 Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r
898\r
899 @param[in, out] Pdu The iSCSI pdu which contains segments to pad.\r
efb56593 900 @param[in] Len The length of the last segment in the PDU.\r
4c5a5e0c 901\r
902 @retval EFI_SUCCESS The segment is padded or no need to pad it.\r
903 @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r
904 padding bytes.\r
905**/\r
906EFI_STATUS\r
907IScsiPadSegment (\r
d1050b9d
MK		 908 IN OUT NET_BUF *Pdu,\r
909 IN UINT32 Len\r
4c5a5e0c 910 );\r
911\r
912/**\r
913 Build a key-value list from the data segment.\r
914\r
915 @param[in] Data The data segment containing the key-value pairs.\r
916 @param[in] Len Length of the data segment.\r
917\r
918 @return The key-value list.\r
919 @retval NULL Other errors as indicated.\r
920\r
921**/\r
922LIST_ENTRY *\r
923IScsiBuildKeyValueList (\r
d1050b9d
MK		 924 IN CHAR8 *Data,\r
925 IN UINT32 Len\r
4c5a5e0c 926 );\r
927\r
928/**\r
929 Get the value string by the key name from the key-value list. If found,\r
930 the key-value entry will be removed from the list.\r
931\r
932 @param[in, out] KeyValueList The key-value list.\r
933 @param[in] Key The key name to find.\r
934\r
935 @return The value string.\r
936 @retval NULL The key value pair can not be found.\r
937\r
938**/\r
939CHAR8 *\r
940IScsiGetValueByKeyFromList (\r
d1050b9d
MK		 941 IN OUT LIST_ENTRY *KeyValueList,\r
942 IN CHAR8 *Key\r
4c5a5e0c 943 );\r
944\r
945/**\r
946 Free the key-value list.\r
947\r
948 @param[in] KeyValueList The key-value list.\r
949\r
950**/\r
951VOID\r
952IScsiFreeKeyValueList (\r
d1050b9d 953 IN LIST_ENTRY *KeyValueList\r
4c5a5e0c 954 );\r
955\r
956/**\r
957 Normalize the iSCSI name according to RFC.\r
958\r
959 @param[in, out] Name The iSCSI name.\r
960 @param[in] Len length of the iSCSI name.\r
961\r
962 @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r
963 @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r
964\r
965**/\r
966EFI_STATUS\r
967IScsiNormalizeName (\r
d1050b9d
MK		 968 IN OUT CHAR8 *Name,\r
969 IN UINTN Len\r
4c5a5e0c 970 );\r
971\r
972/**\r
973 Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r
974\r
975 @param[in] PassThru The EXT SCSI PASS THRU protocol.\r
976 @param[in] Target The target ID.\r
977 @param[in] Lun The LUN.\r
978 @param[in, out] Packet The request packet containing IO request, SCSI command\r
979 buffer and buffers to read/write.\r
f75a7f56 980\r
efb56593 981 @retval EFI_SUCCESS The SCSI command is executed and the result is updated to\r
4c5a5e0c 982 the Packet.\r
983 @retval EFI_DEVICE_ERROR Session state was not as required.\r
984 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
cb162780 985 @retval EFI_NOT_READY The target can not accept new commands.\r
4c5a5e0c 986 @retval Others Other errors as indicated.\r
987\r
988**/\r
989EFI_STATUS\r
990IScsiExecuteScsiCommand (\r
991 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r
992 IN UINT8 *Target,\r
993 IN UINT64 Lun,\r
994 IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r
995 );\r
996\r
997/**\r
998 Reinstate the session on some error.\r
999\r
1000 @param[in] Session The iSCSI session\r
1001\r
efb56593 1002 @retval EFI_SUCCESS The session is reinstated from some error.\r
4c5a5e0c 1003 @retval Other Reinstatement failed.\r
1004\r
1005**/\r
1006EFI_STATUS\r
1007IScsiSessionReinstatement (\r
1008 IN ISCSI_SESSION *Session\r
1009 );\r
1010\r
1011/**\r
1012 Initialize some session parameters before login.\r
1013\r
1014 @param[in, out] Session The iSCSI session.\r
1015 @param[in] Recovery Whether the request is from a fresh new start or recovery.\r
1016\r
1017**/\r
1018VOID\r
1019IScsiSessionInit (\r
1020 IN OUT ISCSI_SESSION *Session,\r
1021 IN BOOLEAN Recovery\r
1022 );\r
f75a7f56 1023\r
4c5a5e0c 1024/**\r
1025 Abort the iSCSI session, that is, reset all the connection and free the\r
1026 resources.\r
1027\r
1028 @param[in, out] Session The iSCSI session.\r
1029\r
1030**/\r
1031VOID\r
1032IScsiSessionAbort (\r
1033 IN OUT ISCSI_SESSION *Session\r
1034 );\r
1035\r
1036#endif\r
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