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12618416 1/** @file\r
55a64ae0 2 The header file of iSCSI Protocol that defines many specific data structures.\r
6a690e23 3\r
d1102dba 4Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r
e5eed7d3 5This program and the accompanying materials\r
7a444476 6are licensed and made available under the terms and conditions of the BSD License\r
7which accompanies this distribution. The full text of the license may be found at\r
8http://opensource.org/licenses/bsd-license.php\r
9\r
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
6a690e23 12\r
12618416 13**/\r
6a690e23 14\r
15#ifndef _ISCSI_PROTO_H_\r
16#define _ISCSI_PROTO_H_\r
17\r
9cb8724d 18#include <Protocol/ScsiPassThruExt.h>\r
6a690e23 19\r
20//\r
21// RFC 1982 Serial Number Arithmetic, SERIAL_BITS = 32\r
22//\r
23#define ISCSI_SEQ_EQ(s1, s2) ((s1) == (s2))\r
24#define ISCSI_SEQ_LT(s1, s2) \\r
25 ( \\r
1c574ee4 26 (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) < ((UINT32) 1 << 31)) || \\r
27 (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) > ((UINT32) 1 << 31)) \\r
6a690e23 28 )\r
29#define ISCSI_SEQ_GT(s1, s2) \\r
30 ( \\r
1c574ee4 31 (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) > ((UINT32) 1 << 31)) || \\r
32 (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) < ((UINT32) 1 << 31)) \\r
6a690e23 33 )\r
34\r
35#define ISCSI_WELL_KNOWN_PORT 3260\r
36#define ISCSI_MAX_CONNS_PER_SESSION 1\r
37\r
38#define DEFAULT_MAX_RECV_DATA_SEG_LEN 8192\r
39#define MAX_RECV_DATA_SEG_LEN_IN_FFP 65536\r
40#define DEFAULT_MAX_OUTSTANDING_R2T 1\r
41\r
42#define ISCSI_VERSION_MAX 0x00\r
43#define ISCSI_VERSION_MIN 0x00\r
44\r
8ce6b650 45#define ISCSI_CHECK_MEDIA_LOGIN_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)\r
46#define ISCSI_CHECK_MEDIA_GET_DHCP_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)\r
47\r
6a690e23 48#define ISCSI_KEY_AUTH_METHOD "AuthMethod"\r
49#define ISCSI_KEY_HEADER_DIGEST "HeaderDigest"\r
50#define ISCSI_KEY_DATA_DIGEST "DataDigest"\r
51#define ISCSI_KEY_MAX_CONNECTIONS "MaxConnections"\r
52#define ISCSI_KEY_TARGET_NAME "TargetName"\r
53#define ISCSI_KEY_INITIATOR_NAME "InitiatorName"\r
54#define ISCSI_KEY_TARGET_ALIAS "TargetAlias"\r
55#define ISCSI_KEY_INITIATOR_ALIAS "InitiatorAlias"\r
56#define ISCSI_KEY_TARGET_ADDRESS "TargetAddress"\r
57#define ISCSI_KEY_INITIAL_R2T "InitialR2T"\r
58#define ISCSI_KEY_IMMEDIATE_DATA "ImmediateData"\r
59#define ISCSI_KEY_TARGET_PORTAL_GROUP_TAG "TargetPortalGroupTag"\r
60#define ISCSI_KEY_MAX_BURST_LENGTH "MaxBurstLength"\r
61#define ISCSI_KEY_FIRST_BURST_LENGTH "FirstBurstLength"\r
62#define ISCSI_KEY_DEFAULT_TIME2WAIT "DefaultTime2Wait"\r
63#define ISCSI_KEY_DEFAULT_TIME2RETAIN "DefaultTime2Retain"\r
64#define ISCSI_KEY_MAX_OUTSTANDING_R2T "MaxOutstandingR2T"\r
65#define ISCSI_KEY_DATA_PDU_IN_ORDER "DataPDUInOrder"\r
66#define ISCSI_KEY_DATA_SEQUENCE_IN_ORDER "DataSequenceInOrder"\r
67#define ISCSI_KEY_ERROR_RECOVERY_LEVEL "ErrorRecoveryLevel"\r
68#define ISCSI_KEY_SESSION_TYPE "SessionType"\r
69#define ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH "MaxRecvDataSegmentLength"\r
70\r
71#define ISCSI_KEY_VALUE_NONE "None"\r
72\r
db3e605d 73///\r
74/// connection state for initiator\r
75///\r
f6b7393c 76\r
77#define CONN_STATE_FREE 0\r
78#define CONN_STATE_XPT_WAIT 1\r
79#define CONN_STATE_IN_LOGIN 2\r
80#define CONN_STATE_LOGGED_IN 3\r
81#define CONN_STATE_IN_LOGOUT 4\r
82#define CONN_STATE_LOGOUT_REQUESTED 5\r
83#define CONN_STATE_CLEANUP_WAIT 6\r
84#define CONN_STATE_IN_CLEANUP 7\r
6a690e23 85\r
db3e605d 86///\r
87/// session state for initiator\r
88///\r
f6b7393c 89#define SESSION_STATE_FREE 0\r
90#define SESSION_STATE_LOGGED_IN 1\r
91#define SESSION_STATE_FAILED 2\r
6a690e23 92\r
93typedef enum {\r
94 DataIn = 0,\r
95 DataOut = 1,\r
96 DataBi = 2\r
97} DATA_DIRECTION;\r
98\r
99#define ISCSI_RESERVED_TAG 0xffffffff\r
100\r
101#define ISCSI_REQ_IMMEDIATE 0x40\r
102#define ISCSI_OPCODE_MASK 0x3F\r
103\r
104#define ISCSI_SET_OPCODE(PduHdr, Op, Flgs) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) = ((Op) | (Flgs)))\r
105#define ISCSI_GET_OPCODE(PduHdr) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) & ISCSI_OPCODE_MASK)\r
106#define ISCSI_CHECK_OPCODE(PduHdr, Op) ((((PduHdr)->OpCode) & ISCSI_OPCODE_MASK) == (Op))\r
107#define ISCSI_IMMEDIATE_ON(PduHdr) ((PduHdr)->OpCode & ISCSI_REQ_IMMEDIATE)\r
69b0882d 108#define ISCSI_SET_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags |= (BOOLEAN)(Flag))\r
6a690e23 109#define ISCSI_CLEAR_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags &= ~(Flag))\r
93e3992d 110#define ISCSI_FLAG_ON(PduHdr, Flag) ((((ISCSI_BASIC_HEADER *) (PduHdr))->Flags & (Flag)) == (Flag))\r
69b0882d 111#define ISCSI_SET_STAGES(PduHdr, Cur, Nxt) ((PduHdr)->Flags = (UINT8) ((PduHdr)->Flags | ((Cur) << 2 | (Nxt))))\r
6a690e23 112#define ISCSI_GET_CURRENT_STAGE(PduHdr) (((PduHdr)->Flags >> 2) & 0x3)\r
113#define ISCSI_GET_NEXT_STAGE(PduHdr) (((PduHdr)->Flags) & 0x3)\r
114\r
115#define ISCSI_GET_PAD_LEN(DataLen) ((~(DataLen) + 1) & 0x3)\r
116#define ISCSI_ROUNDUP(DataLen) (((DataLen) + 3) &~(0x3))\r
117\r
118#define HTON24(Dst, Src) \\r
119 do { \\r
69b0882d 120 (Dst)[0] = (UINT8) (((Src) >> 16) & 0xFF); \\r
121 (Dst)[1] = (UINT8) (((Src) >> 8) & 0xFF); \\r
122 (Dst)[2] = (UINT8) ((Src) & 0xFF); \\r
6a690e23 123 } while (0);\r
124\r
125#define NTOH24(src) (((src)[0] << 16) | ((src)[1] << 8) | ((src)[2]))\r
126\r
127#define ISCSI_GET_DATASEG_LEN(PduHdr) NTOH24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength)\r
128#define ISCSI_SET_DATASEG_LEN(PduHdr, Len) HTON24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength, (Len))\r
129\r
130//\r
131// initiator opcodes\r
132//\r
133#define ISCSI_OPCODE_NOP_OUT 0x00\r
134#define ISCSI_OPCODE_SCSI_CMD 0x01\r
135#define ISCSI_OPCODE_SCSI_TMF_REQ 0x02\r
136#define ISCSI_OPCODE_LOGIN_REQ 0x03\r
137#define ISCSI_OPCODE_TEXT_REQ 0x04\r
138#define ISCSI_OPCODE_SCSI_DATA_OUT 0x05\r
139#define ISCSI_OPCODE_LOGOUT_REQ 0x06\r
140#define ISCSI_OPCODE_SNACK_REQ 0x10\r
141#define ISCSI_OPCODE_VENDOR_I0 0x1c\r
142#define ISCSI_OPCODE_VENDOR_I1 0x1d\r
143#define ISCSI_OPCODE_VENDOR_I2 0x1e\r
144\r
145//\r
146// target opcodes\r
147//\r
148#define ISCSI_OPCODE_NOP_IN 0x20\r
149#define ISCSI_OPCODE_SCSI_RSP 0x21\r
150#define ISCSI_OPCODE_SCSI_TMF_RSP 0x22\r
151#define ISCSI_OPCODE_LOGIN_RSP 0x23\r
152#define ISCSI_OPCODE_TEXT_RSP 0x24\r
153#define ISCSI_OPCODE_SCSI_DATA_IN 0x25\r
154#define ISCSI_OPCODE_LOGOUT_RSP 0x26\r
155#define ISCSI_OPCODE_R2T 0x31\r
156#define ISCSI_OPCODE_ASYNC_MSG 0x32\r
157#define ISCSI_OPCODE_VENDOR_T0 0x3c\r
158#define ISCSI_OPCODE_VENDOR_T1 0x3d\r
159#define ISCSI_OPCODE_VENDOR_T2 0x3e\r
160#define ISCSI_OPCODE_REJECT 0x3f\r
161\r
162#define ISCSI_BHS_FLAG_FINAL 0x80\r
163\r
db3e605d 164///\r
165/// iSCSI Basic Header Segment\r
166///\r
6a690e23 167typedef struct _ISCSI_BASIC_HEADER {\r
168 UINT8 OpCode;\r
169 UINT8 Flags;\r
170 UINT16 OpCodeSpecific1;\r
171 UINT8 TotalAHSLength;\r
172 UINT8 DataSegmentLength[3];\r
173 UINT8 Lun[8];\r
174 UINT32 InitiatorTaskTag;\r
175 UINT32 OpCodeSpecific2[7];\r
176} ISCSI_BASIC_HEADER;\r
177\r
178//\r
179// Defined AHS types, others are reserved.\r
180//\r
181#define ISCSI_AHS_TYPE_EXT_CDB 0x1\r
182#define ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN 0x2\r
183\r
184typedef struct _ISCSI_ADDTIONAL_HEADER {\r
185 UINT16 Length;\r
186 UINT8 Type;\r
187 UINT8 TypeSpecific[1];\r
188} ISCSI_ADDITIONAL_HEADER;\r
189\r
190typedef struct _ISCSI_BI_EXP_READ_DATA_LEN_AHS {\r
191 UINT16 Length;\r
192 UINT8 Type;\r
193 UINT8 Reserved;\r
194 UINT32 ExpReadDataLength;\r
195} ISCSI_BI_EXP_READ_DATA_LEN_AHS;\r
196\r
197#define SCSI_CMD_PDU_FLAG_READ 0x40\r
198#define SCSI_CMD_PDU_FLAG_WRITE 0x20\r
199\r
200#define ISCSI_CMD_PDU_TASK_ATTR_MASK 0x07\r
201\r
202//\r
203// task attributes\r
204//\r
205#define ISCSI_TASK_ATTR_UNTAGGED 0x00\r
206#define ISCSI_TASK_ATTR_SIMPLE 0x01\r
207#define ISCSI_TASK_ATTR_ORDERD 0x02\r
208#define ISCSI_TASK_ATTR_HOQ 0x03\r
209#define ISCSI_TASK_ATTR_ACA 0x04\r
210\r
db3e605d 211///\r
212/// SCSI Command\r
213///\r
6a690e23 214typedef struct _SCSI_COMMAND {\r
215 UINT8 OpCode;\r
216 UINT8 Flags;\r
217 UINT16 Reserved;\r
218 UINT8 TotalAHSLength;\r
219 UINT8 DataSegmentLength[3];\r
220 UINT8 Lun[8];\r
221 UINT32 InitiatorTaskTag;\r
222 UINT32 ExpDataXferLength;\r
223 UINT32 CmdSN;\r
224 UINT32 ExpStatSN;\r
f6b7393c 225 UINT8 Cdb[16];\r
6a690e23 226} SCSI_COMMAND;\r
227\r
228//\r
229// flag bit definitions in SCSI response\r
230//\r
231#define SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW 0x10\r
232#define SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW 0x08\r
233#define SCSI_RSP_PDU_FLAG_OVERFLOW 0x04\r
234#define SCSI_RSP_PDU_FLAG_UNDERFLOW 0x02\r
235\r
236//\r
237// iSCSI service response codes\r
238//\r
239#define ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET 0x00\r
240#define ISCSI_SERVICE_RSP_TARGET_FAILURE 0x01\r
241\r
db3e605d 242///\r
243/// SCSI Response\r
244///\r
6a690e23 245typedef struct _SCSI_RESPONSE {\r
246 UINT8 OpCode;\r
247 UINT8 Flags;\r
248 UINT8 Response;\r
249 UINT8 Status;\r
250 UINT8 TotalAHSLength;\r
251 UINT8 DataSegmentLength[3];\r
252 UINT8 Reserved[8];\r
253 UINT32 InitiatorTaskTag;\r
254 UINT32 SNACKTag;\r
255 UINT32 StatSN;\r
256 UINT32 ExpCmdSN;\r
257 UINT32 MaxCmdSN;\r
258 UINT32 ExpDataSN;\r
259 UINT32 BiReadResidualCount;\r
260 UINT32 ResidualCount;\r
261} SCSI_RESPONSE;\r
262\r
263typedef struct _ISCSI_SENSE_DATA {\r
264 UINT16 Length;\r
265 UINT8 Data[2];\r
266} ISCSI_SENSE_DATA;\r
267\r
db3e605d 268///\r
269/// iSCSI Task Managment Function Request\r
270///\r
6a690e23 271typedef struct _ISCSI_TMF_REQUEST {\r
272 UINT8 OpCode;\r
273 UINT8 Fuction;\r
274 UINT16 Reserved1;\r
275 UINT8 TotalAHSLength;\r
276 UINT8 DataSegmentLength[3];\r
277 UINT8 Lun[8];\r
278 UINT32 InitiatorTaskTag;\r
279 UINT32 ReferencedTaskTag;\r
280 UINT32 CmdSN;\r
281 UINT32 ExpStatSN;\r
282 UINT32 RefCmdSN;\r
283 UINT32 ExpDataSN;\r
284 UINT32 Reserved2[2];\r
285} ISCSI_TMF_REQUEST;\r
286\r
287#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_COMPLETE 0\r
288#define ISCSI_TMF_RSP_PDU_RSP_TASK_NOT_EXIST 1\r
289#define ISCSI_TMF_RSP_PDU_RSP_LUN_NOT_EXIST 2\r
290#define ISCSI_TMF_RSP_PDU_RSP_TASK_STILL_ALLEGIANT 3\r
291#define ISCSI_TMF_RSP_PDU_RSP_TASK_REASSGIN_NOT_SUPPORTED 4\r
292#define ISCSI_TMF_RSP_PDU_RSP_NOT_SUPPORTED 5\r
293#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_AHTH_FAILED 6\r
294#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_REJECTED 255\r
295\r
db3e605d 296///\r
297/// iSCSI Task Management Function Response\r
298///\r
6a690e23 299typedef struct _ISCSI_TMF_RESPONSE {\r
300 UINT8 OpCode;\r
301 UINT8 Reserved1;\r
302 UINT8 Response;\r
303 UINT8 Reserved2;\r
304 UINT8 TotalAHSLength;\r
305 UINT8 DataSegmentLength[3];\r
306 UINT32 Reserver3[2];\r
307 UINT32 InitiatorTaskTag;\r
308 UINT32 Reserved4;\r
309 UINT32 StatSN;\r
310 UINT32 ExpCmdSN;\r
311 UINT32 MaxCmdSN;\r
312 UINT32 Reserved[3];\r
313} ISCSI_TMF_RESPONSE;\r
314\r
db3e605d 315///\r
316/// SCSI Data-Out\r
317///\r
6a690e23 318typedef struct _ISCSI_SCSI_DATA_OUT {\r
319 UINT8 OpCode;\r
320 UINT8 Reserved1[3];\r
321 UINT8 TotalAHSLength;\r
322 UINT8 DataSegmentLength[3];\r
323 UINT8 Lun[8];\r
324 UINT32 InitiatorTaskTag;\r
325 UINT32 TargetTransferTag;\r
326 UINT32 Reserved2;\r
327 UINT32 ExpStatSN;\r
328 UINT32 Reserved3;\r
329 UINT32 DataSN;\r
330 UINT32 BufferOffset;\r
331 UINT32 Reserved4;\r
332} ISCSI_SCSI_DATA_OUT;\r
333\r
334#define SCSI_DATA_IN_PDU_FLAG_ACKKNOWLEDGE 0x40\r
335#define SCSI_DATA_IN_PDU_FLAG_OVERFLOW SCSI_RSP_PDU_FLAG_OVERFLOW\r
336#define SCSI_DATA_IN_PDU_FLAG_UNDERFLOW SCSI_RSP_PDU_FLAG_UNDERFLOW\r
337#define SCSI_DATA_IN_PDU_FLAG_STATUS_VALID 0x01\r
db3e605d 338\r
339///\r
340/// SCSI Data-In\r
341///\r
6a690e23 342typedef struct _ISCSI_SCSI_DATA_IN {\r
343 UINT8 OpCode;\r
344 UINT8 Flags;\r
345 UINT8 Reserved1;\r
346 UINT8 Status;\r
347 UINT8 TotalAHSLength;\r
348 UINT8 DataSegmentLength[3];\r
349 UINT8 Lun[8];\r
350 UINT32 InitiatorTaskTag;\r
351 UINT32 TargetTransferTag;\r
352 UINT32 StatSN;\r
353 UINT32 ExpCmdSN;\r
354 UINT32 MaxCmdSN;\r
355 UINT32 DataSN;\r
356 UINT32 BufferOffset;\r
357 UINT32 ResidualCount;\r
358} ISCSI_SCSI_DATA_IN;\r
359\r
360#define ISCSI_GET_BUFFER_OFFSET(PduHdr) NTOHL (((ISCSI_SCSI_DATA_IN *) (PduHdr))->BufferOffset)\r
db3e605d 361\r
362///\r
363/// Ready To Transfer\r
364///\r
6a690e23 365typedef struct _ISCSI_READY_TO_TRANSFER {\r
366 UINT8 OpCode;\r
367 UINT8 Reserved1[3];\r
368 UINT8 TotalAHSLength;\r
369 UINT8 DataSegmentLength[3];\r
370 UINT8 Lun[8];\r
371 UINT32 InitiatorTaskTag;\r
372 UINT32 TargetTransferTag;\r
373 UINT32 StatSN;\r
374 UINT32 ExpCmdSN;\r
375 UINT32 MaxCmdSN;\r
f6b7393c 376 UINT32 R2TSeqNum;\r
6a690e23 377 UINT32 BufferOffset;\r
378 UINT32 DesiredDataTransferLength;\r
379} ISCSI_READY_TO_TRANSFER;\r
380\r
381typedef struct _ISCSI_ASYNC_MESSAGE {\r
382 UINT8 OpCode;\r
383 UINT8 Reserved1[8];\r
384 UINT8 TotalAHSLength;\r
385 UINT8 DataSegmentLength[3];\r
386 UINT8 Lun[8];\r
387 UINT32 InitiatorTaskTag;\r
388 UINT32 Reserved2;\r
389 UINT32 StatSN;\r
390 UINT32 ExpCmdSN;\r
391 UINT32 MaxCmdSN;\r
392 UINT8 AsyncEvent;\r
393 UINT8 AsyncVCode;\r
394 UINT16 Parameter1;\r
395 UINT16 Parameter2;\r
396 UINT16 Parameter3;\r
397 UINT32 Reserved3;\r
398} ISCSI_ASYNC_MESSAGE;\r
399\r
400#define ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT 0x80\r
401#define ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE 0x40\r
402\r
db3e605d 403///\r
404/// Login Request\r
405///\r
6a690e23 406typedef struct _ISCSI_LOGIN_REQUEST {\r
407 UINT8 OpCode;\r
408 UINT8 Flags;\r
409 UINT8 VersionMax;\r
410 UINT8 VersionMin;\r
411 UINT8 TotalAHSLength;\r
412 UINT8 DataSegmentLength[3];\r
a78d176c 413 UINT8 Isid[6];\r
414 UINT16 Tsih;\r
6a690e23 415 UINT32 InitiatorTaskTag;\r
a78d176c 416 UINT16 Cid;\r
6a690e23 417 UINT16 Reserved1;\r
418 UINT32 CmdSN;\r
419 UINT32 ExpStatSN;\r
420 UINT32 Reserved2[4];\r
421} ISCSI_LOGIN_REQUEST;\r
422\r
423#define ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT\r
424#define ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE\r
425\r
426#define ISCSI_LOGIN_STATUS_SUCCESS 0\r
427#define ISCSI_LOGIN_STATUS_REDIRECTION 1\r
428#define ISCSI_LOGIN_STATUS_INITIATOR_ERROR 2\r
429#define ISCSI_LOGIN_STATUS_TARGET_ERROR 3\r
430\r
db3e605d 431///\r
432/// Login Response\r
433///\r
6a690e23 434typedef struct _ISCSI_LOGIN_RESPONSE {\r
435 UINT8 OpCode;\r
436 UINT8 Flags;\r
437 UINT8 VersionMax;\r
438 UINT8 VersionActive;\r
439 UINT8 TotalAHSLength;\r
440 UINT8 DataSegmentLength[3];\r
a78d176c 441 UINT8 Isid[6];\r
442 UINT16 Tsih;\r
6a690e23 443 UINT32 InitiatorTaskTag;\r
444 UINT32 Reserved1;\r
445 UINT32 StatSN;\r
446 UINT32 ExpCmdSN;\r
447 UINT32 MaxCmdSN;\r
448 UINT8 StatusClass;\r
449 UINT8 StatusDetail;\r
450 UINT8 Reserved2[10];\r
451} ISCSI_LOGIN_RESPONSE;\r
452\r
453#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0\r
454#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1\r
455#define ISCSI_LOGOUT_REASON_REMOVE_CONNECTION_FOR_RECOVERY 2\r
456\r
db3e605d 457///\r
458/// Logout Request\r
459///\r
6a690e23 460typedef struct _ISCSI_LOGOUT_REQUEST {\r
461 UINT8 OpCode;\r
462 UINT8 ReasonCode;\r
463 UINT16 Reserved1;\r
464 UINT8 TotalAHSLength;\r
465 UINT8 DataSegmentLength[3];\r
466 UINT32 Reserved2[2];\r
467 UINT32 InitiatorTaskTag;\r
a78d176c 468 UINT16 Cid;\r
6a690e23 469 UINT16 Reserved3;\r
470 UINT32 CmdSN;\r
471 UINT32 ExpStatSN;\r
472 UINT32 Reserved4[4];\r
473} ISCSI_LOGOUT_REQUEST;\r
474\r
475#define ISCSI_LOGOUT_RESPONSE_SESSION_CLOSED_SUCCESS 0\r
476#define ISCSI_LOGOUT_RESPONSE_CID_NOT_FOUND 1\r
477#define ISCSI_LOGOUT_RESPONSE_RECOVERY_NOT_SUPPORTED 2\r
478#define ISCSI_LOGOUT_RESPONSE_CLEANUP_FAILED 3\r
479\r
db3e605d 480///\r
481/// Logout Response\r
482///\r
6a690e23 483typedef struct _ISCSI_LOGOUT_RESPONSE {\r
484 UINT8 OpCode;\r
485 UINT8 Reserved1;\r
486 UINT8 Response;\r
487 UINT8 Reserved2;\r
488 UINT8 TotalAHSLength;\r
489 UINT8 DataSegmentLength[3];\r
490 UINT32 Reserved3[2];\r
491 UINT32 InitiatorTaskTag;\r
492 UINT32 Reserved4;\r
493 UINT32 StatSN;\r
494 UINT32 ExpCmdSN;\r
495 UINT32 MaxCmdSN;\r
496 UINT32 Reserved5;\r
497 UINT16 Time2Wait;\r
498 UINT16 Time2Retain;\r
499 UINT32 Reserved6;\r
500} ISCSI_LOGOUT_RESPONSE;\r
501\r
502#define ISCSI_SNACK_REQUEST_TYPE_DATA_OR_R2T 0\r
503#define ISCSI_SNACK_REQUEST_TYPE_STATUS 1\r
504#define ISCSI_SNACK_REQUEST_TYPE_DATA_ACK 2\r
505#define ISCSI_SNACK_REQUEST_TYPE_RDATA 3\r
506\r
db3e605d 507///\r
508/// SNACK Request\r
509///\r
6a690e23 510typedef struct _ISCSI_SNACK_REQUEST {\r
511 UINT8 OpCode;\r
512 UINT8 Type;\r
513 UINT16 Reserved1;\r
514 UINT8 TotalAHSLength;\r
515 UINT8 DataSegmentLength[3];\r
516 UINT8 Lun[8];\r
517 UINT32 InitiatorTaskTag;\r
518 UINT32 TargetTransferTag;\r
519 UINT32 Reserved2;\r
520 UINT32 ExpStatSN;\r
521 UINT32 Reserved[2];\r
522 UINT32 BegRun;\r
523 UINT32 RunLength;\r
524} ISCSI_SNACK_REQUEST;\r
525\r
db3e605d 526///\r
527/// Reject\r
528///\r
6a690e23 529typedef struct _ISCSI_REJECT {\r
530 UINT8 OpCode;\r
531 UINT8 Reserved1;\r
532 UINT8 Reason;\r
533 UINT8 Reserved2;\r
534 UINT8 TotalAHSLength;\r
535 UINT8 DataSegmentLength[3];\r
536 UINT32 Reserved3[2];\r
537 UINT32 InitiatorTaskTag;\r
538 UINT32 Reserved4;\r
539 UINT32 StatSN;\r
540 UINT32 ExpCmdSN;\r
541 UINT32 MaxCmdSN;\r
542 UINT32 DataSN;\r
543 UINT32 Reserved5[2];\r
544} ISCSI_REJECT;\r
545\r
db3e605d 546///\r
547/// NOP-Out\r
548///\r
6a690e23 549typedef struct _ISCSI_NOP_OUT {\r
550 UINT8 OpCode;\r
551 UINT8 Reserved1[3];\r
552 UINT8 TotalAHSLength;\r
553 UINT8 DataSegmentLength[3];\r
554 UINT8 Lun[8];\r
555 UINT32 InitiatorTaskTag;\r
556 UINT32 TargetTransferTag;\r
557 UINT32 CmdSN;\r
558 UINT32 ExpStatSN;\r
559 UINT32 Reserved2[4];\r
560} ISCSI_NOP_OUT;\r
561\r
db3e605d 562///\r
563/// NOP-In\r
564///\r
6a690e23 565typedef struct _ISCSI_NOP_IN {\r
566 UINT8 OpCode;\r
567 UINT8 Reserved1[3];\r
568 UINT8 TotalAHSLength;\r
569 UINT8 DataSegmentLength[3];\r
570 UINT8 Lun[8];\r
571 UINT32 InitiatorTaskTag;\r
572 UINT32 TargetTransferTag;\r
573 UINT32 StatSN;\r
574 UINT32 ExpCmdSN;\r
575 UINT32 MaxCmdSN;\r
576 UINT32 Reserved2[3];\r
577} ISCSI_NOP_IN;\r
578\r
579#define ISCSI_SECURITY_NEGOTIATION 0\r
580#define ISCSI_LOGIN_OPERATIONAL_NEGOTIATION 1\r
581#define ISCSI_FULL_FEATURE_PHASE 3\r
582\r
583typedef enum {\r
f6b7393c 584 IScsiDigestNone,\r
585 IScsiDigestCRC32\r
6a690e23 586} ISCSI_DIGEST_TYPE;\r
587\r
588typedef struct _ISCSI_XFER_CONTEXT {\r
589 UINT32 TargetTransferTag;\r
590 UINT32 Offset;\r
591 UINT32 DesiredLength;\r
592 UINT32 ExpDataSN;\r
593} ISCSI_XFER_CONTEXT;\r
594\r
595typedef struct _ISCSI_IN_BUFFER_CONTEXT {\r
596 UINT8 *InData;\r
597 UINT32 InDataLen;\r
598} ISCSI_IN_BUFFER_CONTEXT;\r
599\r
600typedef struct _ISCSI_TCB {\r
e48e37fc 601 LIST_ENTRY Link;\r
6a690e23 602\r
603 BOOLEAN SoFarInOrder;\r
604 UINT32 ExpDataSN;\r
605 BOOLEAN FbitReceived;\r
606 BOOLEAN StatusXferd;\r
607 UINT32 ActiveR2Ts;\r
608 UINT32 Response;\r
609 CHAR8 *Reason;\r
610 UINT32 InitiatorTaskTag;\r
611 UINT32 CmdSN;\r
612 UINT32 SNACKTag;\r
613\r
614 ISCSI_XFER_CONTEXT XferContext;\r
615\r
616 ISCSI_CONNECTION *Conn;\r
617} ISCSI_TCB;\r
618\r
619typedef struct _ISCSI_KEY_VALUE_PAIR {\r
e48e37fc 620 LIST_ENTRY List;\r
6a690e23 621\r
622 CHAR8 *Key;\r
623 CHAR8 *Value;\r
624} ISCSI_KEY_VALUE_PAIR;\r
625\r
12618416 626/**\r
d1102dba 627 Attach the iSCSI connection to the iSCSI session.\r
12618416 628\r
c5de0d55 629 @param[in, out] Session The iSCSI session.\r
630 @param[in, out] Conn The iSCSI connection.\r
12618416 631**/\r
6a690e23 632VOID\r
633IScsiAttatchConnection (\r
c5de0d55 634 IN OUT ISCSI_SESSION *Session,\r
635 IN OUT ISCSI_CONNECTION *Conn\r
6a690e23 636 );\r
637\r
12618416 638/**\r
d1102dba 639 Detach the iSCSI connection from the session it belongs to.\r
12618416 640\r
c5de0d55 641 @param[in, out] Conn The iSCSI connection.\r
12618416 642**/\r
6a690e23 643VOID\r
644IScsiDetatchConnection (\r
c5de0d55 645 IN OUT ISCSI_CONNECTION *Conn\r
6a690e23 646 );\r
647\r
12618416 648/**\r
649 This function does the iSCSI connection login.\r
650\r
c5de0d55 651 @param[in, out] Conn The iSCSI connection to login.\r
12618416 652\r
653 @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r
12618416 654 @retval EFI_TIMEOUT Timeout happened during the login procedure.\r
d1102dba 655 @retval Others Other errors as indicated.\r
12618416 656**/\r
6a690e23 657EFI_STATUS\r
658IScsiConnLogin (\r
c5de0d55 659 IN OUT ISCSI_CONNECTION *Conn\r
6a690e23 660 );\r
661\r
12618416 662/**\r
663 Create a TCP connection for the iSCSI session.\r
664\r
db3e605d 665 @param[in] Private The iSCSI driver data.\r
666 @param[in] Session Maximum CmdSN from the target.\r
12618416 667\r
db3e605d 668 @return The newly created iSCSI connection.\r
12618416 669**/\r
db3e605d 670ISCSI_CONNECTION *\r
6a690e23 671IScsiCreateConnection (\r
672 IN ISCSI_DRIVER_DATA *Private,\r
673 IN ISCSI_SESSION *Session\r
674 );\r
675\r
12618416 676/**\r
677 Destroy an iSCSI connection.\r
678\r
db3e605d 679 @param[in] Conn The connection to destroy.\r
12618416 680**/\r
6a690e23 681VOID\r
682IScsiDestroyConnection (\r
683 IN ISCSI_CONNECTION *Conn\r
684 );\r
685\r
12618416 686/**\r
687 Login the iSCSI session.\r
688\r
db3e605d 689 @param[in] Private The iSCSI driver data.\r
12618416 690\r
691 @retval EFI_SUCCESS The iSCSI session login procedure finished.\r
12618416 692 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
dd29f3ed 693 @retval EFI_NO_MEDIA There was a media error.\r
963dbb30 694 @retval Others Other errors as indicated.\r
dd29f3ed 695\r
12618416 696**/\r
6a690e23 697EFI_STATUS\r
698IScsiSessionLogin (\r
699 IN ISCSI_DRIVER_DATA *Private\r
700 );\r
701\r
12618416 702/**\r
703 Build and send the iSCSI login request to the iSCSI target according to\r
704 the current login stage.\r
705\r
db3e605d 706 @param[in] Conn The connection in the iSCSI login phase.\r
12618416 707\r
708 @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r
709 connection.\r
12618416 710 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
db3e605d 711 @retval EFI_DEVICE_ERROR Some kind of device error happened.\r
12618416 712**/\r
6a690e23 713EFI_STATUS\r
714IScsiSendLoginReq (\r
715 IN ISCSI_CONNECTION *Conn\r
716 );\r
717\r
12618416 718/**\r
719 Receive and process the iSCSI login response.\r
720\r
db3e605d 721 @param[in] Conn The connection in the iSCSI login phase.\r
d1102dba 722\r
12618416 723 @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r
963dbb30 724 @retval Others Other errors as indicated.\r
12618416 725**/\r
6a690e23 726EFI_STATUS\r
727IScsiReceiveLoginRsp (\r
728 IN ISCSI_CONNECTION *Conn\r
729 );\r
730\r
12618416 731/**\r
732 Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r
733 The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r
734 updated.\r
735\r
c5de0d55 736 @param[in, out] Pdu The iSCSI PDU whose data segment the key-value pair will\r
12618416 737 be added to.\r
c5de0d55 738 @param[in] Key The key name string.\r
739 @param[in] Value The value string.\r
12618416 740\r
741 @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r
742 the correspondence length fields are updated.\r
12618416 743 @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r
744 pair.\r
12618416 745**/\r
6a690e23 746EFI_STATUS\r
747IScsiAddKeyValuePair (\r
c5de0d55 748 IN OUT NET_BUF *Pdu,\r
6a690e23 749 IN CHAR8 *Key,\r
750 IN CHAR8 *Value\r
751 );\r
752\r
12618416 753/**\r
754 Prepare the iSCSI login request to be sent according to the current login status.\r
755\r
c5de0d55 756 @param[in, out] Conn The connection in the iSCSI login phase.\r
12618416 757\r
db3e605d 758 @return The pointer to the net buffer containing the iSCSI login request built.\r
963dbb30 759 @retval Others Other errors as indicated.\r
12618416 760**/\r
761NET_BUF *\r
6a690e23 762IScsiPrepareLoginReq (\r
c5de0d55 763 IN OUT ISCSI_CONNECTION *Conn\r
6a690e23 764 );\r
765\r
12618416 766/**\r
767 Process the iSCSI Login Response.\r
768\r
c5de0d55 769 @param[in, out] Conn The connection on which the iSCSI login response is received.\r
770 @param[in, out] Pdu The iSCSI login response PDU.\r
12618416 771\r
772 @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r
12618416 773 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
db3e605d 774 @retval EFI_MEDIA_CHANGED Target is redirected.\r
963dbb30 775 @retval Others Other errors as indicated.\r
12618416 776**/\r
6a690e23 777EFI_STATUS\r
778IScsiProcessLoginRsp (\r
c5de0d55 779 IN OUT ISCSI_CONNECTION *Conn,\r
780 IN OUT NET_BUF *Pdu\r
6a690e23 781 );\r
782\r
12618416 783/**\r
784 Updated the target information according the data received in the iSCSI\r
785 login response with an target redirection status.\r
786\r
c5de0d55 787 @param[in, out] Session The iSCSI session.\r
788 @param[in] Data The data segment which should contain the\r
789 TargetAddress key-value list.\r
790 @param[in] Len Length of the data.\r
d1102dba 791\r
12618416 792 @retval EFI_SUCCESS The target address is updated.\r
12618416 793 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
12618416 794 @retval EFI_NOT_FOUND The TargetAddress key is not found.\r
963dbb30 795 @retval Others Other errors as indicated.\r
12618416 796**/\r
6a690e23 797EFI_STATUS\r
798IScsiUpdateTargetAddress (\r
c5de0d55 799 IN OUT ISCSI_SESSION *Session,\r
800 IN CHAR8 *Data,\r
801 IN UINT32 Len\r
6a690e23 802 );\r
803\r
12618416 804/**\r
805 The callback function to free the net buffer list.\r
806\r
db3e605d 807 @param[in] Arg The opaque parameter.\r
12618416 808**/\r
6a690e23 809VOID\r
e798cd87 810EFIAPI\r
6a690e23 811IScsiFreeNbufList (\r
812 VOID *Arg\r
813 );\r
814\r
12618416 815/**\r
816 Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r
817 an optional data segment. The two parts will be put into two blocks of buffers in the\r
818 net buffer. The digest check will be conducted in this function if needed and the digests\r
819 will be trimmed from the PDU buffer.\r
820\r
db3e605d 821 @param[in] Conn The iSCSI connection to receive data from.\r
822 @param[out] Pdu The received iSCSI pdu.\r
823 @param[in] Context The context used to describe information on the caller provided\r
12618416 824 buffer to receive data segment of the iSCSI pdu, it's optional.\r
db3e605d 825 @param[in] HeaderDigest Whether there will be header digest received.\r
826 @param[in] DataDigest Whether there will be data digest.\r
827 @param[in] TimeoutEvent The timeout event, it's optional.\r
12618416 828\r
db3e605d 829 @retval EFI_SUCCESS An iSCSI pdu is received.\r
830 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
831 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
963dbb30 832 @retval Others Other errors as indicated.\r
12618416 833**/\r
6a690e23 834EFI_STATUS\r
835IScsiReceivePdu (\r
836 IN ISCSI_CONNECTION *Conn,\r
837 OUT NET_BUF **Pdu,\r
838 IN ISCSI_IN_BUFFER_CONTEXT *Context, OPTIONAL\r
839 IN BOOLEAN HeaderDigest,\r
840 IN BOOLEAN DataDigest,\r
841 IN EFI_EVENT TimeoutEvent OPTIONAL\r
842 );\r
843\r
12618416 844/**\r
845 Check and get the result of the prameter negotiation.\r
846\r
c5de0d55 847 @param[in, out] Conn The connection in iSCSI login.\r
12618416 848\r
db3e605d 849 @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.\r
850 @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
851 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
12618416 852**/\r
6a690e23 853EFI_STATUS\r
854IScsiCheckOpParams (\r
c5de0d55 855 IN OUT ISCSI_CONNECTION *Conn\r
6a690e23 856 );\r
857\r
12618416 858/**\r
859 Fill the oprational prameters.\r
860\r
c5de0d55 861 @param[in] Conn The connection in iSCSI login.\r
862 @param[in, out] Pdu The iSCSI login request PDU to fill the parameters.\r
12618416 863\r
864 @retval EFI_SUCCESS The parmeters are filled into the iSCSI login request PDU.\r
12618416 865**/\r
6a690e23 866EFI_STATUS\r
867IScsiFillOpParams (\r
868 IN ISCSI_CONNECTION *Conn,\r
c5de0d55 869 IN OUT NET_BUF *Pdu\r
6a690e23 870 );\r
871\r
12618416 872/**\r
873 Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r
874\r
c5de0d55 875 @param[in, out] Pdu The iSCSI pdu which contains segments to pad.\r
876 @param[in] Len The length of the last semgnet in the PDU.\r
12618416 877\r
878 @retval EFI_SUCCESS The segment is padded or no need to pad it.\r
12618416 879 @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r
880 padding bytes.\r
12618416 881**/\r
6a690e23 882EFI_STATUS\r
883IScsiPadSegment (\r
c5de0d55 884 IN OUT NET_BUF *Pdu,\r
885 IN UINT32 Len\r
6a690e23 886 );\r
887\r
12618416 888/**\r
889 Build a key-value list from the data segment.\r
890\r
db3e605d 891 @param[in] Data The data segment containing the key-value pairs.\r
892 @param[in] Len Length of the data segment.\r
12618416 893\r
db3e605d 894 @return The key-value list.\r
963dbb30 895 @retval NULL Other errors as indicated.\r
12618416 896**/\r
897LIST_ENTRY *\r
6a690e23 898IScsiBuildKeyValueList (\r
899 IN CHAR8 *Data,\r
900 IN UINT32 Len\r
901 );\r
902\r
12618416 903/**\r
904 Get the value string by the key name from the key-value list. If found,\r
905 the key-value entry will be removed from the list.\r
906\r
c5de0d55 907 @param[in, out] KeyValueList The key-value list.\r
908 @param[in] Key The key name to find.\r
12618416 909\r
db3e605d 910 @return The value string.\r
12618416 911**/\r
912CHAR8 *\r
6a690e23 913IScsiGetValueByKeyFromList (\r
c5de0d55 914 IN OUT LIST_ENTRY *KeyValueList,\r
6a690e23 915 IN CHAR8 *Key\r
916 );\r
917\r
12618416 918/**\r
919 Free the key-value list.\r
920\r
db3e605d 921 @param[in] KeyValueList The key-value list.\r
12618416 922**/\r
6a690e23 923VOID\r
924IScsiFreeKeyValueList (\r
e48e37fc 925 IN LIST_ENTRY *KeyValueList\r
6a690e23 926 );\r
927\r
12618416 928/**\r
929 Normalize the iSCSI name according to RFC.\r
930\r
c5de0d55 931 @param[in, out] Name The iSCSI name.\r
932 @param[in] Len length of the iSCSI name.\r
12618416 933\r
934 @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r
12618416 935 @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r
12618416 936**/\r
6a690e23 937EFI_STATUS\r
938IScsiNormalizeName (\r
c5de0d55 939 IN OUT CHAR8 *Name,\r
940 IN UINTN Len\r
6a690e23 941 );\r
942\r
12618416 943/**\r
944 Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r
945\r
db3e605d 946 @param[in] PassThru The EXT SCSI PASS THRU protocol.\r
947 @param[in] Target The target ID.\r
948 @param[in] Lun The LUN.\r
949 @param[in, out] Packet The request packet containing IO request, SCSI command\r
950 buffer and buffers to read/write.\r
d1102dba
LG		 951\r
952 @retval EFI_SUCCES The SCSI command is executed and the result is updated to\r
db3e605d 953 the Packet.\r
c5de0d55 954 @retval EFI_DEVICE_ERROR Session state was not as required.\r
db3e605d 955 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
f20fc992 956 @retval EFI_NOT_READY The target can not accept new commands.\r
963dbb30 957 @retval Others Other errors as indicated.\r
12618416 958**/\r
6a690e23 959EFI_STATUS\r
960IScsiExecuteScsiCommand (\r
961 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r
962 IN UINT8 *Target,\r
963 IN UINT64 Lun,\r
964 IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r
965 );\r
966\r
12618416 967/**\r
968 Reinstate the session on some error.\r
969\r
c5de0d55 970 @param[in, out] Private The iSCSI driver data.\r
12618416 971\r
972 @retval EFI_SUCCES The session is reinstated from some error.\r
db3e605d 973 @retval Other Reinstatement failed.\r
12618416 974**/\r
6a690e23 975EFI_STATUS\r
976IScsiSessionReinstatement (\r
c5de0d55 977 IN OUT ISCSI_DRIVER_DATA *Private\r
6a690e23 978 );\r
979\r
12618416 980/**\r
981 Initialize some session parameters before login.\r
982\r
963dbb30 983 @param[in, out] Session The iSCSI session.\r
984 @param[in] Recovery Whether the request is from a fresh new start or recovery.\r
12618416 985**/\r
6a690e23 986VOID\r
987IScsiSessionInit (\r
963dbb30 988 IN OUT ISCSI_SESSION *Session,\r
989 IN BOOLEAN Recovery\r
6a690e23 990 );\r
d1102dba 991\r
12618416 992/**\r
993 Abort the iSCSI session, that is, reset all the connection and free the\r
994 resources.\r
995\r
c5de0d55 996 @param[in, out] Session The iSCSI session.\r
12618416 997\r
998 @retval EFI_SUCCES The session is aborted.\r
12618416 999**/\r
6a690e23 1000EFI_STATUS\r
1001IScsiSessionAbort (\r
c5de0d55 1002 IN OUT ISCSI_SESSION *Session\r
6a690e23 1003 );\r
1004\r
1005#endif\r
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