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12618416 | 1 | /** @file\r |
db3e605d | 2 | The implementation of IScsi protocol based on RFC3720.\r |
6a690e23 | 3 | \r |
db3e605d | 4 | Copyright (c) 2004 - 2008, Intel Corporation.<BR>\r |
7a444476 | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
6a690e23 | 12 | \r |
12618416 | 13 | **/\r |
6a690e23 | 14 | \r |
15 | #include "IScsiImpl.h"\r | |
16 | \r | |
fe1e36e5 | 17 | UINT32 mDataSegPad = 0;\r |
6a690e23 | 18 | \r |
12618416 | 19 | /**\r |
6a690e23 | 20 | Attach the iSCSI connection to the iSCSI session. \r |
21 | \r | |
c5de0d55 | 22 | @param[in, out] Session The iSCSI session.\r |
23 | @param[in, out] Conn The iSCSI connection.\r | |
12618416 | 24 | **/\r |
25 | VOID\r | |
26 | IScsiAttatchConnection (\r | |
c5de0d55 | 27 | IN OUT ISCSI_SESSION *Session,\r |
28 | IN OUT ISCSI_CONNECTION *Conn\r | |
12618416 | 29 | )\r |
6a690e23 | 30 | {\r |
e48e37fc | 31 | InsertTailList (&Session->Conns, &Conn->Link);\r |
6a690e23 | 32 | Conn->Session = Session;\r |
33 | Session->NumConns++;\r | |
34 | }\r | |
35 | \r | |
12618416 | 36 | /**\r |
6a690e23 | 37 | Detach the iSCSI connection from the session it belongs to. \r |
38 | \r | |
c5de0d55 | 39 | @param[in, out] Conn The iSCSI connection.\r |
12618416 | 40 | **/\r |
41 | VOID\r | |
42 | IScsiDetatchConnection (\r | |
c5de0d55 | 43 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 44 | )\r |
6a690e23 | 45 | {\r |
e48e37fc | 46 | RemoveEntryList (&Conn->Link);\r |
6a690e23 | 47 | Conn->Session->NumConns--;\r |
48 | Conn->Session = NULL;\r | |
49 | }\r | |
50 | \r | |
12618416 | 51 | /**\r |
6a690e23 | 52 | Check the sequence number according to RFC3720. \r |
53 | \r | |
c5de0d55 | 54 | @param[in, out] ExpSN The currently expected sequence number.\r |
55 | @param[in] NewSN The sequence number to check.\r | |
6a690e23 | 56 | \r |
db3e605d | 57 | @retval EFI_SUCCESS The check passed and the ExpSN is increased.\r |
58 | @retval EFI_NOT_READY Response was sent due to a retransmission request.\r | |
59 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
12618416 | 60 | **/\r |
61 | EFI_STATUS\r | |
62 | IScsiCheckSN (\r | |
c5de0d55 | 63 | IN OUT UINT32 *ExpSN,\r |
64 | IN UINT32 NewSN\r | |
12618416 | 65 | )\r |
6a690e23 | 66 | {\r |
67 | if (!ISCSI_SEQ_EQ (NewSN, *ExpSN)) {\r | |
68 | if (ISCSI_SEQ_LT (NewSN, *ExpSN)) {\r | |
69 | //\r | |
70 | // Duplicate\r | |
71 | //\r | |
72 | return EFI_NOT_READY;\r | |
73 | } else {\r | |
74 | return EFI_PROTOCOL_ERROR;\r | |
75 | }\r | |
76 | } else {\r | |
77 | //\r | |
78 | // Advance the ExpSN\r | |
79 | //\r | |
80 | (*ExpSN)++;\r | |
81 | return EFI_SUCCESS;\r | |
82 | }\r | |
83 | }\r | |
84 | \r | |
12618416 | 85 | /**\r |
6a690e23 | 86 | Update the sequence numbers for the iSCSI command.\r |
87 | \r | |
c5de0d55 | 88 | @param[in, out] Session The iSCSI session.\r |
89 | @param[in] MaxCmdSN Maximum CmdSN from the target.\r | |
90 | @param[in] ExpCmdSN Next expected CmdSN from the target.\r | |
12618416 | 91 | **/\r |
92 | VOID\r | |
93 | IScsiUpdateCmdSN (\r | |
c5de0d55 | 94 | IN OUT ISCSI_SESSION *Session,\r |
95 | IN UINT32 MaxCmdSN,\r | |
96 | IN UINT32 ExpCmdSN\r | |
12618416 | 97 | )\r |
6a690e23 | 98 | {\r |
99 | if (ISCSI_SEQ_LT (MaxCmdSN, ExpCmdSN - 1)) {\r | |
100 | return ;\r | |
101 | }\r | |
102 | \r | |
103 | if (ISCSI_SEQ_GT (MaxCmdSN, Session->MaxCmdSN)) {\r | |
104 | Session->MaxCmdSN = MaxCmdSN;\r | |
105 | }\r | |
106 | \r | |
107 | if (ISCSI_SEQ_GT (ExpCmdSN, Session->ExpCmdSN)) {\r | |
108 | Session->ExpCmdSN = ExpCmdSN;\r | |
109 | }\r | |
110 | }\r | |
111 | \r | |
12618416 | 112 | /**\r |
6a690e23 | 113 | This function does the iSCSI connection login.\r |
114 | \r | |
c5de0d55 | 115 | @param[in, out] Conn The iSCSI connection to login.\r |
6a690e23 | 116 | \r |
12618416 | 117 | @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r |
12618416 | 118 | @retval EFI_TIMEOUT Timeout happened during the login procedure.\r |
963dbb30 | 119 | @retval Others Other errors as indicated. \r |
12618416 | 120 | **/\r |
121 | EFI_STATUS\r | |
122 | IScsiConnLogin (\r | |
c5de0d55 | 123 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 124 | )\r |
6a690e23 | 125 | {\r |
126 | EFI_STATUS Status;\r | |
127 | \r | |
128 | //\r | |
129 | // Start the timer, wait 16 seconds to establish the TCP connection.\r | |
130 | //\r | |
131 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, 16 * TICKS_PER_SECOND);\r | |
132 | if (EFI_ERROR (Status)) {\r | |
133 | return Status;\r | |
134 | }\r | |
135 | //\r | |
136 | // try to establish the tcp connection\r | |
137 | //\r | |
138 | Status = Tcp4IoConnect (&Conn->Tcp4Io, Conn->TimeoutEvent);\r | |
139 | if (EFI_ERROR (Status)) {\r | |
140 | return Status;\r | |
141 | }\r | |
142 | \r | |
143 | gBS->SetTimer (Conn->TimeoutEvent, TimerCancel, 0);\r | |
144 | Conn->State = CONN_STATE_IN_LOGIN;\r | |
145 | \r | |
146 | //\r | |
147 | // connection is established, start the iSCSI Login\r | |
148 | //\r | |
149 | do {\r | |
150 | Status = IScsiSendLoginReq (Conn);\r | |
151 | if (EFI_ERROR (Status)) {\r | |
152 | break;\r | |
153 | }\r | |
154 | \r | |
155 | Status = IScsiReceiveLoginRsp (Conn);\r | |
156 | if (EFI_ERROR (Status)) {\r | |
157 | break;\r | |
158 | }\r | |
159 | } while (Conn->CurrentStage != ISCSI_FULL_FEATURE_PHASE);\r | |
160 | \r | |
161 | return Status;\r | |
162 | }\r | |
163 | \r | |
12618416 | 164 | /**\r |
165 | Reset the iSCSI connection.\r | |
166 | \r | |
c5de0d55 | 167 | @param[in, out] Conn The iSCSI connection to reset.\r |
12618416 | 168 | **/\r |
6a690e23 | 169 | VOID\r |
170 | IScsiConnReset (\r | |
c5de0d55 | 171 | IN OUT ISCSI_CONNECTION *Conn\r |
6a690e23 | 172 | )\r |
12618416 | 173 | {\r |
174 | Tcp4IoReset (&Conn->Tcp4Io);\r | |
175 | }\r | |
6a690e23 | 176 | \r |
12618416 | 177 | /**\r |
178 | Create a TCP connection for the iSCSI session.\r | |
6a690e23 | 179 | \r |
db3e605d | 180 | @param[in] Private The iSCSI driver data.\r |
181 | @param[in] Session Maximum CmdSN from the target.\r | |
6a690e23 | 182 | \r |
db3e605d | 183 | @return The newly created iSCSI connection.\r |
12618416 | 184 | **/\r |
6a690e23 | 185 | ISCSI_CONNECTION *\r |
186 | IScsiCreateConnection (\r | |
187 | IN ISCSI_DRIVER_DATA *Private,\r | |
188 | IN ISCSI_SESSION *Session\r | |
189 | )\r | |
6a690e23 | 190 | {\r |
191 | ISCSI_CONNECTION *Conn;\r | |
192 | TCP4_IO_CONFIG_DATA Tcp4IoConfig;\r | |
193 | EFI_STATUS Status;\r | |
194 | \r | |
e48e37fc | 195 | Conn = AllocatePool (sizeof (ISCSI_CONNECTION));\r |
6a690e23 | 196 | if (Conn == NULL) {\r |
197 | return NULL;\r | |
198 | }\r | |
199 | \r | |
200 | Conn->Signature = ISCSI_CONNECTION_SIGNATURE;\r | |
201 | Conn->State = CONN_STATE_FREE;\r | |
202 | Conn->CurrentStage = ISCSI_SECURITY_NEGOTIATION;\r | |
203 | Conn->NextStage = ISCSI_LOGIN_OPERATIONAL_NEGOTIATION;\r | |
204 | Conn->CHAPStep = ISCSI_CHAP_INITIAL;\r | |
205 | Conn->ExpStatSN = 0;\r | |
206 | Conn->PartialReqSent = FALSE;\r | |
207 | Conn->PartialRspRcvd = FALSE;\r | |
208 | Conn->CID = Session->NextCID++;\r | |
209 | \r | |
210 | Status = gBS->CreateEvent (\r | |
e53a6ea9 | 211 | EVT_TIMER,\r |
e48e37fc | 212 | TPL_CALLBACK,\r |
6a690e23 | 213 | NULL,\r |
214 | NULL,\r | |
215 | &Conn->TimeoutEvent\r | |
216 | );\r | |
217 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 218 | gBS->FreePool (Conn);\r |
6a690e23 | 219 | return NULL;\r |
220 | }\r | |
221 | \r | |
222 | NetbufQueInit (&Conn->RspQue);\r | |
223 | \r | |
224 | //\r | |
225 | // set the default connection-only parameters\r | |
226 | //\r | |
227 | Conn->MaxRecvDataSegmentLength = MAX_RECV_DATA_SEG_LEN_IN_FFP;\r | |
228 | Conn->HeaderDigest = ISCSI_DIGEST_NONE;\r | |
229 | Conn->DataDigest = ISCSI_DIGEST_NONE;\r | |
230 | \r | |
e48e37fc | 231 | CopyMem (&Tcp4IoConfig.LocalIp, &Session->ConfigData.NvData.LocalIp, sizeof (EFI_IPv4_ADDRESS));\r |
232 | CopyMem (&Tcp4IoConfig.SubnetMask, &Session->ConfigData.NvData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
233 | CopyMem (&Tcp4IoConfig.Gateway, &Session->ConfigData.NvData.Gateway, sizeof (EFI_IPv4_ADDRESS));\r | |
234 | CopyMem (&Tcp4IoConfig.RemoteIp, &Session->ConfigData.NvData.TargetIp, sizeof (EFI_IPv4_ADDRESS));\r | |
6a690e23 | 235 | \r |
236 | Tcp4IoConfig.RemotePort = Session->ConfigData.NvData.TargetPort;\r | |
237 | \r | |
238 | //\r | |
239 | // Create the tcp4 IO for this connection\r | |
240 | //\r | |
241 | Status = Tcp4IoCreateSocket (\r | |
242 | Private->Image,\r | |
243 | Private->Controller,\r | |
244 | &Tcp4IoConfig,\r | |
245 | &Conn->Tcp4Io\r | |
246 | );\r | |
247 | if (EFI_ERROR (Status)) {\r | |
248 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
e48e37fc | 249 | gBS->FreePool (Conn);\r |
6a690e23 | 250 | Conn = NULL;\r |
251 | }\r | |
252 | \r | |
253 | return Conn;\r | |
254 | }\r | |
255 | \r | |
12618416 | 256 | /**\r |
6a690e23 | 257 | Destroy an iSCSI connection.\r |
258 | \r | |
db3e605d | 259 | @param[in] Conn The connection to destroy.\r |
12618416 | 260 | **/\r |
261 | VOID\r | |
262 | IScsiDestroyConnection (\r | |
263 | IN ISCSI_CONNECTION *Conn\r | |
264 | )\r | |
6a690e23 | 265 | {\r |
266 | Tcp4IoDestroySocket (&Conn->Tcp4Io);\r | |
267 | NetbufQueFlush (&Conn->RspQue);\r | |
268 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
e48e37fc | 269 | gBS->FreePool (Conn);\r |
6a690e23 | 270 | }\r |
271 | \r | |
12618416 | 272 | /**\r |
6a690e23 | 273 | Login the iSCSI session.\r |
274 | \r | |
db3e605d | 275 | @param[in] Private The iSCSI driver data.\r |
6a690e23 | 276 | \r |
12618416 | 277 | @retval EFI_SUCCESS The iSCSI session login procedure finished.\r |
12618416 | 278 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
963dbb30 | 279 | @retval Others Other errors as indicated.\r |
12618416 | 280 | **/\r |
281 | EFI_STATUS\r | |
282 | IScsiSessionLogin (\r | |
283 | IN ISCSI_DRIVER_DATA *Private\r | |
284 | )\r | |
6a690e23 | 285 | {\r |
286 | EFI_STATUS Status;\r | |
287 | ISCSI_SESSION *Session;\r | |
288 | ISCSI_CONNECTION *Conn;\r | |
289 | EFI_TCP4_PROTOCOL *Tcp4;\r | |
290 | \r | |
291 | Session = &Private->Session;\r | |
292 | \r | |
293 | //\r | |
294 | // Create a connection for the session.\r | |
295 | //\r | |
296 | Conn = IScsiCreateConnection (Private, Session);\r | |
297 | if (Conn == NULL) {\r | |
298 | return EFI_OUT_OF_RESOURCES;\r | |
299 | }\r | |
300 | \r | |
301 | IScsiAttatchConnection (Session, Conn);\r | |
302 | \r | |
303 | //\r | |
304 | // Login througth the newly created connection.\r | |
305 | //\r | |
306 | Status = IScsiConnLogin (Conn);\r | |
307 | if (EFI_ERROR (Status)) {\r | |
308 | IScsiConnReset (Conn);\r | |
309 | IScsiDetatchConnection (Conn);\r | |
310 | IScsiDestroyConnection (Conn);\r | |
311 | } else {\r | |
312 | Session->State = SESSION_STATE_LOGGED_IN;\r | |
313 | \r | |
314 | gBS->OpenProtocol (\r | |
315 | Conn->Tcp4Io.Handle,\r | |
316 | &gEfiTcp4ProtocolGuid,\r | |
317 | (VOID **)&Tcp4,\r | |
318 | Private->Image,\r | |
319 | Private->ExtScsiPassThruHandle,\r | |
320 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
321 | );\r | |
322 | }\r | |
323 | \r | |
324 | return Status;\r | |
325 | }\r | |
326 | \r | |
12618416 | 327 | /**\r |
6a690e23 | 328 | Build and send the iSCSI login request to the iSCSI target according to\r |
329 | the current login stage.\r | |
330 | \r | |
db3e605d | 331 | @param[in] Conn The connection in the iSCSI login phase.\r |
6a690e23 | 332 | \r |
12618416 | 333 | @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r |
334 | connection.\r | |
12618416 | 335 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
db3e605d | 336 | @retval EFI_DEVICE_ERROR Some kind of device error happened.\r |
12618416 | 337 | **/\r |
338 | EFI_STATUS\r | |
339 | IScsiSendLoginReq (\r | |
340 | IN ISCSI_CONNECTION *Conn\r | |
341 | )\r | |
6a690e23 | 342 | {\r |
343 | NET_BUF *Pdu;\r | |
344 | EFI_STATUS Status;\r | |
345 | \r | |
346 | //\r | |
347 | // build the Login Request PDU\r | |
348 | //\r | |
349 | Pdu = IScsiPrepareLoginReq (Conn);\r | |
350 | if (Pdu == NULL) {\r | |
351 | return EFI_DEVICE_ERROR;\r | |
352 | }\r | |
353 | //\r | |
354 | // Send it to the iSCSI target.\r | |
355 | //\r | |
356 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
357 | \r | |
358 | NetbufFree (Pdu);\r | |
359 | \r | |
360 | return Status;\r | |
361 | }\r | |
362 | \r | |
12618416 | 363 | /**\r |
6a690e23 | 364 | Receive and process the iSCSI login response.\r |
365 | \r | |
db3e605d | 366 | @param[in] Conn The connection in the iSCSI login phase.\r |
367 | \r | |
12618416 | 368 | @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r |
963dbb30 | 369 | @retval Others Other errors as indicated.\r |
12618416 | 370 | **/\r |
371 | EFI_STATUS\r | |
372 | IScsiReceiveLoginRsp (\r | |
373 | IN ISCSI_CONNECTION *Conn\r | |
374 | )\r | |
6a690e23 | 375 | {\r |
376 | EFI_STATUS Status;\r | |
377 | NET_BUF *Pdu;\r | |
378 | \r | |
379 | //\r | |
380 | // Receive the iSCSI login response.\r | |
381 | //\r | |
382 | Status = IScsiReceivePdu (Conn, &Pdu, NULL, FALSE, FALSE, NULL);\r | |
383 | if (EFI_ERROR (Status)) {\r | |
384 | return Status;\r | |
385 | }\r | |
386 | //\r | |
387 | // A Login Response is received, process it.\r | |
388 | //\r | |
389 | Status = IScsiProcessLoginRsp (Conn, Pdu);\r | |
390 | \r | |
391 | NetbufFree (Pdu);\r | |
392 | \r | |
393 | return Status;\r | |
394 | }\r | |
395 | \r | |
12618416 | 396 | /**\r |
6a690e23 | 397 | Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r |
398 | The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r | |
399 | updated.\r | |
400 | \r | |
c5de0d55 | 401 | @param[in, out] Pdu The iSCSI PDU whose data segment the key-value pair will\r |
12618416 | 402 | be added to.\r |
c5de0d55 | 403 | @param[in] Key The key name string.\r |
404 | @param[in] Value The value string.\r | |
6a690e23 | 405 | \r |
12618416 | 406 | @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r |
407 | the correspondence length fields are updated.\r | |
12618416 | 408 | @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r |
409 | pair.\r | |
12618416 | 410 | **/\r |
411 | EFI_STATUS\r | |
412 | IScsiAddKeyValuePair (\r | |
c5de0d55 | 413 | IN OUT NET_BUF *Pdu,\r |
12618416 | 414 | IN CHAR8 *Key,\r |
415 | IN CHAR8 *Value\r | |
416 | )\r | |
6a690e23 | 417 | {\r |
418 | UINT32 DataSegLen;\r | |
419 | UINT32 KeyLen;\r | |
420 | UINT32 ValueLen;\r | |
421 | UINT32 TotalLen;\r | |
422 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
423 | CHAR8 *Data;\r | |
424 | \r | |
425 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufGetByte (Pdu, 0, NULL);\r | |
426 | DataSegLen = NTOH24 (LoginReq->DataSegmentLength);\r | |
427 | \r | |
428 | KeyLen = (UINT32) AsciiStrLen (Key);\r | |
429 | ValueLen = (UINT32) AsciiStrLen (Value);\r | |
430 | \r | |
431 | //\r | |
432 | // 1 byte for the key value separator '=' and 1 byte for the null\r | |
433 | // delimiter after the value.\r | |
434 | //\r | |
435 | TotalLen = KeyLen + 1 + ValueLen + 1;\r | |
436 | \r | |
437 | //\r | |
438 | // Allocate the space for the key-value pair.\r | |
439 | //\r | |
69b0882d | 440 | Data = (CHAR8 *)NetbufAllocSpace (Pdu, TotalLen, NET_BUF_TAIL);\r |
6a690e23 | 441 | if (Data == NULL) {\r |
442 | return EFI_OUT_OF_RESOURCES;\r | |
443 | }\r | |
444 | //\r | |
445 | // Add the key.\r | |
446 | //\r | |
e48e37fc | 447 | CopyMem (Data, Key, KeyLen);\r |
6a690e23 | 448 | Data += KeyLen;\r |
449 | \r | |
450 | *Data = '=';\r | |
451 | Data++;\r | |
452 | \r | |
453 | //\r | |
454 | // Add the value.\r | |
455 | //\r | |
e48e37fc | 456 | CopyMem (Data, Value, ValueLen);\r |
6a690e23 | 457 | Data += ValueLen;\r |
458 | \r | |
459 | *Data = '\0';\r | |
460 | \r | |
461 | //\r | |
462 | // update the DataSegmentLength\r | |
463 | //\r | |
464 | ISCSI_SET_DATASEG_LEN (LoginReq, DataSegLen + TotalLen);\r | |
465 | \r | |
466 | return EFI_SUCCESS;\r | |
467 | }\r | |
468 | \r | |
12618416 | 469 | /**\r |
6a690e23 | 470 | Prepare the iSCSI login request to be sent according to the current login status.\r |
471 | \r | |
c5de0d55 | 472 | @param[in, out] Conn The connection in the iSCSI login phase.\r |
6a690e23 | 473 | \r |
db3e605d | 474 | @return The pointer to the net buffer containing the iSCSI login request built.\r |
963dbb30 | 475 | @retval Others Other errors as indicated.\r |
12618416 | 476 | **/\r |
477 | NET_BUF *\r | |
478 | IScsiPrepareLoginReq (\r | |
c5de0d55 | 479 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 480 | )\r |
6a690e23 | 481 | {\r |
482 | ISCSI_SESSION *Session;\r | |
483 | NET_BUF *Nbuf;\r | |
484 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
485 | EFI_STATUS Status;\r | |
486 | \r | |
487 | Session = Conn->Session;\r | |
488 | \r | |
489 | Nbuf = NetbufAlloc (sizeof (ISCSI_LOGIN_REQUEST) + DEFAULT_MAX_RECV_DATA_SEG_LEN);\r | |
490 | if (Nbuf == NULL) {\r | |
491 | return NULL;\r | |
492 | }\r | |
493 | \r | |
494 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufAllocSpace (Nbuf, sizeof (ISCSI_LOGIN_REQUEST), NET_BUF_TAIL);\r | |
e48e37fc | 495 | ZeroMem (LoginReq, sizeof (ISCSI_LOGIN_REQUEST));\r |
6a690e23 | 496 | \r |
497 | //\r | |
498 | // Init the login request pdu\r | |
499 | //\r | |
500 | ISCSI_SET_OPCODE (LoginReq, ISCSI_OPCODE_LOGIN_REQ, ISCSI_REQ_IMMEDIATE);\r | |
501 | ISCSI_SET_STAGES (LoginReq, Conn->CurrentStage, Conn->NextStage);\r | |
502 | LoginReq->VersionMax = ISCSI_VERSION_MAX;\r | |
503 | LoginReq->VersionMin = ISCSI_VERSION_MIN;\r | |
504 | LoginReq->TSIH = HTONS (Session->TSIH);\r | |
505 | LoginReq->InitiatorTaskTag = HTONL (Session->InitiatorTaskTag);\r | |
506 | LoginReq->CID = HTONS (Conn->CID);\r | |
507 | LoginReq->CmdSN = HTONL (Session->CmdSN);\r | |
508 | \r | |
509 | //\r | |
510 | // For the first Login Request on a coonection this is ExpStatSN for the\r | |
511 | // old connection and this field is only valid if the Login Request restarts\r | |
512 | // a connection.\r | |
513 | // For subsequent Login Requests it is used to acknowledge the Login Responses\r | |
514 | // with their increasing StatSN values.\r | |
515 | //\r | |
516 | LoginReq->ExpStatSN = HTONL (Conn->ExpStatSN);\r | |
e48e37fc | 517 | CopyMem (LoginReq->ISID, Session->ISID, sizeof (LoginReq->ISID));\r |
6a690e23 | 518 | \r |
519 | if (Conn->PartialRspRcvd) {\r | |
520 | //\r | |
521 | // A partial response, initiator must send an empty Login Request.\r | |
522 | //\r | |
523 | return Nbuf;\r | |
524 | }\r | |
525 | \r | |
526 | switch (Conn->CurrentStage) {\r | |
527 | case ISCSI_SECURITY_NEGOTIATION:\r | |
528 | Status = IScsiCHAPToSendReq (Conn, Nbuf);\r | |
529 | break;\r | |
530 | \r | |
531 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
532 | Status = IScsiFillOpParams (Conn, Nbuf);\r | |
533 | ISCSI_SET_FLAG (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r | |
534 | break;\r | |
535 | \r | |
536 | default:\r | |
537 | //\r | |
538 | // something error happens...\r | |
539 | //\r | |
540 | Status = EFI_DEVICE_ERROR;\r | |
541 | break;\r | |
542 | }\r | |
543 | \r | |
544 | if (EFI_ERROR (Status)) {\r | |
545 | NetbufFree (Nbuf);\r | |
546 | Nbuf = NULL;\r | |
547 | } else {\r | |
548 | //\r | |
549 | // Pad the data segment if needed.\r | |
550 | //\r | |
551 | IScsiPadSegment (Nbuf, ISCSI_GET_DATASEG_LEN (LoginReq));\r | |
552 | //\r | |
553 | // Check whether we will issue the stage transition signal?\r | |
554 | //\r | |
69b0882d | 555 | Conn->TransitInitiated = (BOOLEAN) ISCSI_FLAG_ON (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r |
6a690e23 | 556 | }\r |
557 | \r | |
558 | return Nbuf;\r | |
559 | }\r | |
560 | \r | |
12618416 | 561 | /**\r |
6a690e23 | 562 | Process the iSCSI Login Response.\r |
563 | \r | |
c5de0d55 | 564 | @param[in, out] Conn The connection on which the iSCSI login response is received.\r |
565 | @param[in, out] Pdu The iSCSI login response PDU.\r | |
6a690e23 | 566 | \r |
12618416 | 567 | @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r |
12618416 | 568 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
db3e605d | 569 | @retval EFI_MEDIA_CHANGED Target is redirected.\r |
963dbb30 | 570 | @retval Others Other errors as indicated.\r |
12618416 | 571 | **/\r |
572 | EFI_STATUS\r | |
573 | IScsiProcessLoginRsp (\r | |
c5de0d55 | 574 | IN OUT ISCSI_CONNECTION *Conn,\r |
575 | IN OUT NET_BUF *Pdu\r | |
12618416 | 576 | )\r |
6a690e23 | 577 | {\r |
578 | EFI_STATUS Status;\r | |
579 | ISCSI_SESSION *Session;\r | |
580 | ISCSI_LOGIN_RESPONSE *LoginRsp;\r | |
581 | BOOLEAN Transit;\r | |
582 | BOOLEAN Continue;\r | |
583 | UINT8 CurrentStage;\r | |
584 | UINT8 NextStage;\r | |
585 | UINT8 *DataSeg;\r | |
586 | UINT32 DataSegLen;\r | |
587 | \r | |
588 | Session = Conn->Session;\r | |
589 | \r | |
590 | LoginRsp = (ISCSI_LOGIN_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
591 | if (!ISCSI_CHECK_OPCODE (LoginRsp, ISCSI_OPCODE_LOGIN_RSP)) {\r | |
592 | //\r | |
593 | // It's not a Login Response\r | |
594 | //\r | |
595 | return EFI_PROTOCOL_ERROR;\r | |
596 | }\r | |
597 | //\r | |
598 | // Get the data segment if any.\r | |
599 | //\r | |
600 | DataSegLen = ISCSI_GET_DATASEG_LEN (LoginRsp);\r | |
601 | if (DataSegLen != 0) {\r | |
602 | DataSeg = NetbufGetByte (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NULL);\r | |
603 | } else {\r | |
604 | DataSeg = NULL;\r | |
605 | }\r | |
606 | //\r | |
607 | // Check the status class in the login response PDU.\r | |
608 | //\r | |
609 | switch (LoginRsp->StatusClass) {\r | |
610 | case ISCSI_LOGIN_STATUS_SUCCESS:\r | |
611 | //\r | |
612 | // Just break here, the response and the data segment will be processed later.\r | |
613 | //\r | |
614 | break;\r | |
615 | \r | |
616 | case ISCSI_LOGIN_STATUS_REDIRECTION:\r | |
617 | //\r | |
618 | // The target may be moved to a different address\r | |
619 | //\r | |
620 | if (DataSeg == NULL) {\r | |
621 | return EFI_PROTOCOL_ERROR;\r | |
622 | }\r | |
623 | //\r | |
624 | // Process the TargetAddress key-value strings in the data segment to update the\r | |
625 | // target address info.\r | |
626 | //\r | |
69b0882d | 627 | Status = IScsiUpdateTargetAddress (Session, (CHAR8 *)DataSeg, DataSegLen);\r |
6a690e23 | 628 | if (EFI_ERROR (Status)) {\r |
629 | return Status;\r | |
630 | }\r | |
631 | //\r | |
632 | // Session will be restarted on this error status because the Target is\r | |
633 | // redirected by this Login Response.\r | |
634 | //\r | |
635 | return EFI_MEDIA_CHANGED;\r | |
636 | \r | |
637 | default:\r | |
638 | //\r | |
639 | // Initiator Error, Target Error, or any other undefined error code.\r | |
640 | //\r | |
641 | return EFI_PROTOCOL_ERROR;\r | |
642 | }\r | |
643 | //\r | |
644 | // The status is sucess, extract the wanted fields from the header segment.\r | |
645 | //\r | |
69b0882d | 646 | Transit = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT);\r |
647 | Continue = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE);\r | |
6a690e23 | 648 | \r |
69b0882d | 649 | CurrentStage = (UINT8) ISCSI_GET_CURRENT_STAGE (LoginRsp);\r |
650 | NextStage = (UINT8) ISCSI_GET_NEXT_STAGE (LoginRsp);\r | |
6a690e23 | 651 | \r |
652 | LoginRsp->InitiatorTaskTag = NTOHL (LoginRsp->InitiatorTaskTag);\r | |
653 | \r | |
654 | if ((Transit && Continue) ||\r | |
655 | (CurrentStage != Conn->CurrentStage) ||\r | |
656 | (!Conn->TransitInitiated && Transit) ||\r | |
657 | (Transit && (NextStage != Conn->NextStage)) ||\r | |
e48e37fc | 658 | (CompareMem (Session->ISID, LoginRsp->ISID, sizeof (LoginRsp->ISID)) != 0) ||\r |
6a690e23 | 659 | (LoginRsp->InitiatorTaskTag != Session->InitiatorTaskTag)\r |
660 | ) {\r | |
661 | //\r | |
662 | // A Login Response with the C bit set to 1 MUST have the T bit set to 0;\r | |
663 | // The CSG in the Login Response MUST be the same with the I-end of this connection;\r | |
664 | // The T bit can't be 1 if the last Login Response sent by the initiator doesn't\r | |
665 | // initiate the transistion;\r | |
666 | // The NSG MUST be the same with the I-end of this connection if Transit is required.\r | |
667 | // The ISID in the Login Response MUST be the same with this session.\r | |
668 | //\r | |
669 | return EFI_PROTOCOL_ERROR;\r | |
670 | }\r | |
671 | \r | |
672 | LoginRsp->StatSN = NTOHL (LoginRsp->StatSN);\r | |
673 | LoginRsp->ExpCmdSN = NTOHL (LoginRsp->ExpCmdSN);\r | |
674 | LoginRsp->MaxCmdSN = NTOHL (LoginRsp->MaxCmdSN);\r | |
675 | \r | |
676 | if ((Conn->CurrentStage == ISCSI_SECURITY_NEGOTIATION) && (Conn->CHAPStep == ISCSI_CHAP_INITIAL)) {\r | |
677 | //\r | |
678 | // It's the initial Login Response, initialize the local ExpStatSN, MaxCmdSN\r | |
679 | // and ExpCmdSN.\r | |
680 | //\r | |
681 | Conn->ExpStatSN = LoginRsp->StatSN + 1;\r | |
682 | Session->MaxCmdSN = LoginRsp->MaxCmdSN;\r | |
683 | Session->ExpCmdSN = LoginRsp->ExpCmdSN;\r | |
684 | } else {\r | |
685 | //\r | |
686 | // Check the StatSN of this PDU\r | |
687 | //\r | |
688 | Status = IScsiCheckSN (&Conn->ExpStatSN, LoginRsp->StatSN);\r | |
689 | if (!EFI_ERROR (Status)) {\r | |
690 | //\r | |
691 | // Update the MaxCmdSN and ExpCmdSN\r | |
692 | //\r | |
693 | IScsiUpdateCmdSN (Session, LoginRsp->MaxCmdSN, LoginRsp->ExpCmdSN);\r | |
694 | } else {\r | |
695 | return Status;\r | |
696 | }\r | |
697 | }\r | |
698 | //\r | |
699 | // Trim off the header segment.\r | |
700 | //\r | |
701 | NetbufTrim (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NET_BUF_HEAD);\r | |
702 | \r | |
703 | //\r | |
704 | // Queue this login response first in case it's a partial response so that\r | |
705 | // later when the full response list is received we can combine these scattered\r | |
706 | // responses' data segment and then process it.\r | |
707 | //\r | |
708 | NET_GET_REF (Pdu);\r | |
709 | NetbufQueAppend (&Conn->RspQue, Pdu);\r | |
710 | \r | |
711 | Conn->PartialRspRcvd = Continue;\r | |
712 | if (Continue) {\r | |
713 | //\r | |
714 | // It's a partial response, have to wait for another or more Request/Response\r | |
715 | // conversations to get the full response.\r | |
716 | //\r | |
717 | return EFI_SUCCESS;\r | |
718 | }\r | |
719 | \r | |
720 | switch (CurrentStage) {\r | |
721 | case ISCSI_SECURITY_NEGOTIATION:\r | |
722 | //\r | |
723 | // In security negotiation stage, let CHAP module handle it.\r | |
724 | //\r | |
c5de0d55 | 725 | Status = IScsiCHAPOnRspReceived (Conn);\r |
6a690e23 | 726 | break;\r |
727 | \r | |
728 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
729 | //\r | |
730 | // Response received with negotiation resonse on iSCSI parameters, check them.\r | |
731 | //\r | |
c5de0d55 | 732 | Status = IScsiCheckOpParams (Conn);\r |
6a690e23 | 733 | break;\r |
734 | \r | |
735 | default:\r | |
736 | //\r | |
737 | // Should never get here.\r | |
738 | //\r | |
739 | Status = EFI_PROTOCOL_ERROR;\r | |
740 | break;\r | |
741 | }\r | |
742 | \r | |
743 | if (Transit && (Status == EFI_SUCCESS)) {\r | |
744 | //\r | |
745 | // Do the state transition.\r | |
746 | //\r | |
747 | Conn->CurrentStage = Conn->NextStage;\r | |
748 | \r | |
749 | if (Conn->CurrentStage == ISCSI_LOGIN_OPERATIONAL_NEGOTIATION) {\r | |
750 | Conn->NextStage = ISCSI_FULL_FEATURE_PHASE;\r | |
751 | } else {\r | |
752 | //\r | |
753 | // CurrentStage is iSCSI Full Feature, it's the Login-Final Response,\r | |
754 | // get the TSIH from the Login Response.\r | |
755 | //\r | |
756 | Session->TSIH = NTOHS (LoginRsp->TSIH);\r | |
757 | }\r | |
758 | }\r | |
759 | //\r | |
760 | // Flush the response(s) received.\r | |
761 | //\r | |
762 | NetbufQueFlush (&Conn->RspQue);\r | |
763 | \r | |
764 | return Status;\r | |
765 | }\r | |
766 | \r | |
12618416 | 767 | /**\r |
6a690e23 | 768 | Updated the target information according the data received in the iSCSI\r |
769 | login response with an target redirection status.\r | |
770 | \r | |
c5de0d55 | 771 | @param[in, out] Session The iSCSI session.\r |
772 | @param[in] Data The data segment which should contain the\r | |
773 | TargetAddress key-value list.\r | |
774 | @param[in] Len Length of the data.\r | |
db3e605d | 775 | \r |
12618416 | 776 | @retval EFI_SUCCESS The target address is updated.\r |
12618416 | 777 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
12618416 | 778 | @retval EFI_NOT_FOUND The TargetAddress key is not found.\r |
963dbb30 | 779 | @retval Others Other errors as indicated.\r |
12618416 | 780 | **/\r |
781 | EFI_STATUS\r | |
782 | IScsiUpdateTargetAddress (\r | |
c5de0d55 | 783 | IN OUT ISCSI_SESSION *Session,\r |
784 | IN CHAR8 *Data,\r | |
785 | IN UINT32 Len\r | |
12618416 | 786 | )\r |
6a690e23 | 787 | {\r |
e48e37fc | 788 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 789 | CHAR8 *TargetAddress;\r |
790 | CHAR8 *IpStr;\r | |
791 | EFI_STATUS Status;\r | |
792 | UINTN Number;\r | |
793 | \r | |
794 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
795 | if (KeyValueList == NULL) {\r | |
796 | return EFI_OUT_OF_RESOURCES;\r | |
797 | }\r | |
798 | \r | |
799 | Status = EFI_NOT_FOUND;\r | |
800 | \r | |
801 | while (TRUE) {\r | |
802 | TargetAddress = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ADDRESS);\r | |
803 | if (TargetAddress == NULL) {\r | |
804 | break;\r | |
805 | }\r | |
806 | \r | |
807 | if (!NET_IS_DIGIT (TargetAddress[0])) {\r | |
808 | //\r | |
809 | // The domainname of the target may be presented in three formats: a DNS host name,\r | |
810 | // a dotted-decimal IPv4 address, or a bracketed IPv6 address. Only accept dotted\r | |
811 | // IPv4 address.\r | |
812 | //\r | |
813 | continue;\r | |
814 | }\r | |
815 | \r | |
816 | IpStr = TargetAddress;\r | |
817 | \r | |
db3e605d | 818 | while ((*TargetAddress != 0) && (*TargetAddress != ':') && (*TargetAddress != ',')) {\r |
6a690e23 | 819 | //\r |
820 | // NULL, ':' or ',' ends the IPv4 string.\r | |
821 | //\r | |
822 | TargetAddress++;\r | |
823 | }\r | |
824 | \r | |
825 | if (*TargetAddress == ',') {\r | |
826 | //\r | |
827 | // Comma and the portal group tag MUST be ommitted if the TargetAddress is sent\r | |
828 | // as the result of a redirection.\r | |
829 | //\r | |
830 | continue;\r | |
831 | } else if (*TargetAddress == ':') {\r | |
832 | *TargetAddress = '\0';\r | |
833 | \r | |
834 | TargetAddress++;\r | |
835 | \r | |
836 | Number = AsciiStrDecimalToUintn (TargetAddress);\r | |
837 | if (Number > 0xFFFF) {\r | |
838 | continue;\r | |
839 | } else {\r | |
840 | Session->ConfigData.NvData.TargetPort = (UINT16) Number;\r | |
841 | }\r | |
842 | } else {\r | |
843 | //\r | |
844 | // The string only contains the IPv4 address. Use the well known port.\r | |
845 | //\r | |
846 | Session->ConfigData.NvData.TargetPort = ISCSI_WELL_KNOWN_PORT;\r | |
847 | }\r | |
848 | //\r | |
849 | // Update the target IP address.\r | |
850 | //\r | |
851 | Status = IScsiAsciiStrToIp (IpStr, &Session->ConfigData.NvData.TargetIp);\r | |
852 | if (EFI_ERROR (Status)) {\r | |
853 | continue;\r | |
854 | } else {\r | |
855 | break;\r | |
856 | }\r | |
857 | }\r | |
858 | \r | |
859 | IScsiFreeKeyValueList (KeyValueList);\r | |
860 | \r | |
861 | return Status;\r | |
862 | }\r | |
863 | \r | |
12618416 | 864 | /**\r |
6a690e23 | 865 | The callback function to free the net buffer list.\r |
866 | \r | |
db3e605d | 867 | @param[in] Arg The opaque parameter.\r |
12618416 | 868 | **/\r |
869 | VOID\r | |
870 | IScsiFreeNbufList (\r | |
871 | VOID *Arg\r | |
872 | )\r | |
6a690e23 | 873 | {\r |
874 | ASSERT (Arg != NULL);\r | |
875 | \r | |
e48e37fc | 876 | NetbufFreeList ((LIST_ENTRY *) Arg);\r |
877 | gBS->FreePool (Arg);\r | |
6a690e23 | 878 | }\r |
879 | \r | |
12618416 | 880 | /**\r |
881 | The callback function called in NetBufFree, it does nothing.\r | |
882 | \r | |
db3e605d | 883 | @param[in] Arg The opaque parameter.\r |
12618416 | 884 | **/\r |
6a690e23 | 885 | VOID\r |
886 | IScsiNbufExtFree (\r | |
887 | VOID *Arg\r | |
888 | )\r | |
12618416 | 889 | {\r |
890 | }\r | |
6a690e23 | 891 | \r |
12618416 | 892 | /**\r |
893 | Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r | |
894 | an optional data segment. The two parts will be put into two blocks of buffers in the\r | |
895 | net buffer. The digest check will be conducted in this function if needed and the digests\r | |
896 | will be trimmed from the PDU buffer.\r | |
6a690e23 | 897 | \r |
db3e605d | 898 | @param[in] Conn The iSCSI connection to receive data from.\r |
899 | @param[out] Pdu The received iSCSI pdu.\r | |
900 | @param[in] Context The context used to describe information on the caller provided\r | |
12618416 | 901 | buffer to receive data segment of the iSCSI pdu, it's optional.\r |
db3e605d | 902 | @param[in] HeaderDigest Whether there will be header digest received.\r |
903 | @param[in] DataDigest Whether there will be data digest.\r | |
904 | @param[in] TimeoutEvent The timeout event, it's optional.\r | |
6a690e23 | 905 | \r |
db3e605d | 906 | @retval EFI_SUCCESS An iSCSI pdu is received.\r |
907 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
908 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
963dbb30 | 909 | @retval Others Other errors as indicated.\r |
12618416 | 910 | **/\r |
6a690e23 | 911 | EFI_STATUS\r |
912 | IScsiReceivePdu (\r | |
913 | IN ISCSI_CONNECTION *Conn,\r | |
914 | OUT NET_BUF **Pdu,\r | |
915 | IN ISCSI_IN_BUFFER_CONTEXT *Context, OPTIONAL\r | |
916 | IN BOOLEAN HeaderDigest,\r | |
917 | IN BOOLEAN DataDigest,\r | |
918 | IN EFI_EVENT TimeoutEvent OPTIONAL\r | |
919 | )\r | |
6a690e23 | 920 | {\r |
e48e37fc | 921 | LIST_ENTRY *NbufList;\r |
6a690e23 | 922 | UINT32 Len;\r |
923 | NET_BUF *PduHdr;\r | |
924 | UINT8 *Header;\r | |
925 | EFI_STATUS Status;\r | |
926 | UINT32 PadLen;\r | |
927 | UINT32 InDataOffset;\r | |
928 | NET_FRAGMENT Fragment[2];\r | |
929 | UINT32 FragmentCount;\r | |
930 | NET_BUF *DataSeg;\r | |
931 | UINT32 PadAndCRC32[2];\r | |
932 | \r | |
e48e37fc | 933 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 934 | if (NbufList == NULL) {\r |
935 | return EFI_OUT_OF_RESOURCES;\r | |
936 | }\r | |
937 | \r | |
e48e37fc | 938 | InitializeListHead (NbufList);\r |
6a690e23 | 939 | \r |
940 | //\r | |
941 | // The header digest will be received together with the PDU header if exists.\r | |
942 | //\r | |
943 | Len = sizeof (ISCSI_BASIC_HEADER) + (HeaderDigest ? sizeof (UINT32) : 0);\r | |
944 | PduHdr = NetbufAlloc (Len);\r | |
945 | if (PduHdr == NULL) {\r | |
946 | Status = EFI_OUT_OF_RESOURCES;\r | |
947 | goto ON_EXIT;\r | |
948 | }\r | |
949 | \r | |
950 | Header = NetbufAllocSpace (PduHdr, Len, NET_BUF_TAIL);\r | |
e48e37fc | 951 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 952 | \r |
953 | //\r | |
954 | // First step, receive the BHS of the PDU.\r | |
955 | //\r | |
956 | Status = Tcp4IoReceive (&Conn->Tcp4Io, PduHdr, FALSE, TimeoutEvent);\r | |
957 | if (EFI_ERROR (Status)) {\r | |
958 | goto ON_EXIT;\r | |
959 | }\r | |
960 | \r | |
961 | if (HeaderDigest) {\r | |
962 | //\r | |
963 | // TODO: check the header-digest.\r | |
964 | //\r | |
965 | //\r | |
966 | // Trim off the digest.\r | |
967 | //\r | |
968 | NetbufTrim (PduHdr, sizeof (UINT32), NET_BUF_TAIL);\r | |
969 | }\r | |
970 | \r | |
971 | Len = ISCSI_GET_DATASEG_LEN (Header);\r | |
972 | if (Len == 0) {\r | |
973 | //\r | |
974 | // No data segment.\r | |
975 | //\r | |
976 | goto FORM_PDU;\r | |
977 | }\r | |
978 | //\r | |
979 | // Get the length of the padding bytes of the data segment.\r | |
980 | //\r | |
981 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
982 | \r | |
983 | switch (ISCSI_GET_OPCODE (Header)) {\r | |
984 | case ISCSI_OPCODE_SCSI_DATA_IN:\r | |
985 | //\r | |
986 | // Try to use the buffer described by Context if the PDU is an\r | |
987 | // iSCSI SCSI data in pdu so as to reduce memory copy overhead.\r | |
988 | //\r | |
989 | InDataOffset = ISCSI_GET_BUFFER_OFFSET (Header);\r | |
990 | if ((Context == NULL) || ((InDataOffset + Len) > Context->InDataLen)) {\r | |
991 | Status = EFI_PROTOCOL_ERROR;\r | |
992 | goto ON_EXIT;\r | |
993 | }\r | |
994 | \r | |
995 | Fragment[0].Len = Len;\r | |
996 | Fragment[0].Bulk = Context->InData + InDataOffset;\r | |
997 | \r | |
998 | if (DataDigest || (PadLen != 0)) {\r | |
999 | //\r | |
1000 | // The data segment is padded, use two fragments to receive it.\r | |
1001 | // The first to receive the useful data. The second to receive the padding.\r | |
1002 | //\r | |
1003 | Fragment[1].Len = PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
1004 | Fragment[1].Bulk = (UINT8 *) ((UINTN) &PadAndCRC32[1] - PadLen);\r | |
1005 | \r | |
1006 | FragmentCount = 2;\r | |
1007 | } else {\r | |
1008 | FragmentCount = 1;\r | |
1009 | }\r | |
1010 | \r | |
1011 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1012 | if (DataSeg == NULL) {\r | |
1013 | Status = EFI_OUT_OF_RESOURCES;\r | |
1014 | goto ON_EXIT;\r | |
1015 | }\r | |
1016 | \r | |
1017 | break;\r | |
1018 | \r | |
1019 | case ISCSI_OPCODE_SCSI_RSP:\r | |
1020 | case ISCSI_OPCODE_NOP_IN:\r | |
1021 | case ISCSI_OPCODE_LOGIN_RSP:\r | |
1022 | case ISCSI_OPCODE_TEXT_RSP:\r | |
1023 | case ISCSI_OPCODE_ASYNC_MSG:\r | |
1024 | case ISCSI_OPCODE_REJECT:\r | |
1025 | case ISCSI_OPCODE_VENDOR_T0:\r | |
1026 | case ISCSI_OPCODE_VENDOR_T1:\r | |
1027 | case ISCSI_OPCODE_VENDOR_T2:\r | |
1028 | //\r | |
1029 | // Allocate buffer to receive the data segment.\r | |
1030 | //\r | |
1031 | Len += PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
1032 | DataSeg = NetbufAlloc (Len);\r | |
1033 | if (DataSeg == NULL) {\r | |
1034 | Status = EFI_OUT_OF_RESOURCES;\r | |
1035 | goto ON_EXIT;\r | |
1036 | }\r | |
1037 | \r | |
1038 | NetbufAllocSpace (DataSeg, Len, NET_BUF_TAIL);\r | |
1039 | break;\r | |
1040 | \r | |
1041 | default:\r | |
1042 | Status = EFI_PROTOCOL_ERROR;\r | |
1043 | goto ON_EXIT;\r | |
1044 | }\r | |
1045 | \r | |
e48e37fc | 1046 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 1047 | \r |
1048 | //\r | |
1049 | // Receive the data segment with the data digest if any.\r | |
1050 | //\r | |
1051 | Status = Tcp4IoReceive (&Conn->Tcp4Io, DataSeg, FALSE, TimeoutEvent);\r | |
1052 | if (EFI_ERROR (Status)) {\r | |
1053 | goto ON_EXIT;\r | |
1054 | }\r | |
1055 | \r | |
1056 | if (DataDigest) {\r | |
1057 | //\r | |
1058 | // TODO: Check the data digest.\r | |
1059 | //\r | |
1060 | NetbufTrim (DataSeg, sizeof (UINT32), NET_BUF_TAIL);\r | |
1061 | }\r | |
1062 | \r | |
1063 | if (PadLen != 0) {\r | |
1064 | //\r | |
1065 | // Trim off the padding bytes in the data segment.\r | |
1066 | //\r | |
1067 | NetbufTrim (DataSeg, PadLen, NET_BUF_TAIL);\r | |
1068 | }\r | |
1069 | \r | |
1070 | FORM_PDU:\r | |
1071 | //\r | |
1072 | // Form the pdu from a list of pdu segments.\r | |
1073 | //\r | |
1074 | *Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1075 | if (*Pdu == NULL) {\r | |
1076 | Status = EFI_OUT_OF_RESOURCES;\r | |
1077 | }\r | |
1078 | \r | |
1079 | ON_EXIT:\r | |
1080 | \r | |
1081 | if (EFI_ERROR (Status)) {\r | |
1082 | //\r | |
1083 | // Free the Nbufs in this NbufList and the NbufList itself.\r | |
1084 | //\r | |
1085 | IScsiFreeNbufList (NbufList);\r | |
1086 | }\r | |
1087 | \r | |
1088 | return Status;\r | |
1089 | }\r | |
1090 | \r | |
12618416 | 1091 | /**\r |
6a690e23 | 1092 | Check and get the result of the prameter negotiation.\r |
1093 | \r | |
c5de0d55 | 1094 | @param[in, out] Conn The connection in iSCSI login.\r |
6a690e23 | 1095 | \r |
db3e605d | 1096 | @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.\r |
1097 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
1098 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
12618416 | 1099 | **/\r |
1100 | EFI_STATUS\r | |
1101 | IScsiCheckOpParams (\r | |
c5de0d55 | 1102 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 1103 | )\r |
6a690e23 | 1104 | {\r |
1105 | EFI_STATUS Status;\r | |
e48e37fc | 1106 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 1107 | CHAR8 *Data;\r |
1108 | UINT32 Len;\r | |
1109 | ISCSI_SESSION *Session;\r | |
1110 | CHAR8 *Value;\r | |
1111 | UINTN NumericValue;\r | |
1112 | \r | |
1113 | ASSERT (Conn->RspQue.BufNum != 0);\r | |
1114 | \r | |
1115 | Session = Conn->Session;\r | |
1116 | \r | |
1117 | Len = Conn->RspQue.BufSize;\r | |
e48e37fc | 1118 | Data = AllocatePool (Len);\r |
6a690e23 | 1119 | if (Data == NULL) {\r |
1120 | return EFI_OUT_OF_RESOURCES;\r | |
1121 | }\r | |
1122 | \r | |
69b0882d | 1123 | NetbufQueCopy (&Conn->RspQue, 0, Len, (UINT8 *) Data);\r |
6a690e23 | 1124 | \r |
1125 | Status = EFI_PROTOCOL_ERROR;\r | |
1126 | \r | |
1127 | //\r | |
1128 | // Extract the Key-Value pairs into a list.\r | |
1129 | //\r | |
1130 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
1131 | if (KeyValueList == NULL) {\r | |
e48e37fc | 1132 | gBS->FreePool (Data);\r |
6a690e23 | 1133 | return Status;\r |
1134 | }\r | |
1135 | //\r | |
1136 | // HeaderDigest\r | |
1137 | //\r | |
1138 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_HEADER_DIGEST);\r | |
1139 | if (Value == NULL) {\r | |
1140 | goto ON_ERROR;\r | |
1141 | }\r | |
1142 | \r | |
1143 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
1144 | if (Conn->HeaderDigest != ISCSI_DIGEST_CRC32) {\r | |
1145 | goto ON_ERROR;\r | |
1146 | }\r | |
1147 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
1148 | Conn->HeaderDigest = ISCSI_DIGEST_NONE;\r | |
1149 | } else {\r | |
1150 | goto ON_ERROR;\r | |
1151 | }\r | |
1152 | //\r | |
1153 | // DataDigest\r | |
1154 | //\r | |
1155 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_DIGEST);\r | |
1156 | if (Value == NULL) {\r | |
1157 | goto ON_ERROR;\r | |
1158 | }\r | |
1159 | \r | |
1160 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
1161 | if (Conn->DataDigest != ISCSI_DIGEST_CRC32) {\r | |
1162 | goto ON_ERROR;\r | |
1163 | }\r | |
1164 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
1165 | Conn->DataDigest = ISCSI_DIGEST_NONE;\r | |
1166 | } else {\r | |
1167 | goto ON_ERROR;\r | |
1168 | }\r | |
1169 | //\r | |
1170 | // ErrorRecoveryLevel, result fuction is Minimum.\r | |
1171 | //\r | |
1172 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_ERROR_RECOVERY_LEVEL);\r | |
1173 | if (Value == NULL) {\r | |
1174 | goto ON_ERROR;\r | |
1175 | }\r | |
1176 | \r | |
1177 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1178 | if (NumericValue > 2) {\r | |
1179 | goto ON_ERROR;\r | |
1180 | }\r | |
1181 | \r | |
1182 | Session->ErrorRecoveryLevel = (UINT8) MIN (Session->ErrorRecoveryLevel, NumericValue);\r | |
1183 | \r | |
1184 | //\r | |
1185 | // InitialR2T, result function is OR.\r | |
1186 | //\r | |
1187 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_INITIAL_R2T);\r | |
1188 | if (Value == NULL) {\r | |
1189 | goto ON_ERROR;\r | |
1190 | }\r | |
1191 | \r | |
69b0882d | 1192 | Session->InitialR2T = (BOOLEAN) (Session->InitialR2T || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1193 | \r |
1194 | //\r | |
1195 | // ImmediateData, result function is AND.\r | |
1196 | //\r | |
1197 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_IMMEDIATE_DATA);\r | |
1198 | if (Value == NULL) {\r | |
1199 | goto ON_ERROR;\r | |
1200 | }\r | |
1201 | \r | |
69b0882d | 1202 | Session->ImmediateData = (BOOLEAN) (Session->ImmediateData && (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1203 | \r |
1204 | //\r | |
1205 | // MaxRecvDataSegmentLength, result function is Mininum.\r | |
1206 | //\r | |
1207 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH);\r | |
1208 | if (Value != NULL) {\r | |
1209 | //\r | |
1210 | // MaxRecvDataSegmentLength is declarative.\r | |
1211 | //\r | |
1212 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1213 | \r | |
1214 | Conn->MaxRecvDataSegmentLength = (UINT32) MIN (Conn->MaxRecvDataSegmentLength, NumericValue);\r | |
1215 | }\r | |
1216 | //\r | |
1217 | // MaxBurstLength, result funtion is Mininum.\r | |
1218 | //\r | |
1219 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_BURST_LENGTH);\r | |
1220 | if (Value == NULL) {\r | |
1221 | goto ON_ERROR;\r | |
1222 | }\r | |
1223 | \r | |
1224 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1225 | Session->MaxBurstLength = (UINT32) MIN (Session->MaxBurstLength, NumericValue);\r | |
1226 | \r | |
1227 | //\r | |
1228 | // FirstBurstLength, result function is Minimum. Irrelevant when InitialR2T=Yes and\r | |
1229 | // ImmediateData=No.\r | |
1230 | //\r | |
1231 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_FIRST_BURST_LENGTH);\r | |
1232 | if ((Value == NULL) && !(Session->InitialR2T && !Session->ImmediateData)) {\r | |
1233 | goto ON_ERROR;\r | |
1234 | }\r | |
1235 | \r | |
1236 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1237 | Session->FirstBurstLength = (UINT32) MIN (Session->FirstBurstLength, NumericValue);\r | |
1238 | \r | |
1239 | //\r | |
1240 | // MaxConnections, result function is Minimum.\r | |
1241 | //\r | |
1242 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_CONNECTIONS);\r | |
1243 | if (Value == NULL) {\r | |
1244 | goto ON_ERROR;\r | |
1245 | }\r | |
1246 | \r | |
1247 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1248 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1249 | goto ON_ERROR;\r | |
1250 | }\r | |
1251 | \r | |
1252 | Session->MaxConnections = (UINT32) MIN (Session->MaxConnections, NumericValue);\r | |
1253 | \r | |
1254 | //\r | |
1255 | // DataPDUInOrder, result function is OR.\r | |
1256 | //\r | |
1257 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_PDU_IN_ORDER);\r | |
1258 | if (Value == NULL) {\r | |
1259 | goto ON_ERROR;\r | |
1260 | }\r | |
1261 | \r | |
69b0882d | 1262 | Session->DataPDUInOrder = (BOOLEAN) (Session->DataPDUInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1263 | \r |
1264 | //\r | |
1265 | // DataSequenceInorder, result function is OR.\r | |
1266 | //\r | |
1267 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER);\r | |
1268 | if (Value == NULL) {\r | |
1269 | goto ON_ERROR;\r | |
1270 | }\r | |
1271 | \r | |
69b0882d | 1272 | Session->DataSequenceInOrder = (BOOLEAN) (Session->DataSequenceInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1273 | \r |
1274 | //\r | |
1275 | // DefaultTime2Wait, result function is Maximum.\r | |
1276 | //\r | |
1277 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2WAIT);\r | |
1278 | if (Value == NULL) {\r | |
1279 | goto ON_ERROR;\r | |
1280 | }\r | |
1281 | \r | |
1282 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1283 | if (NumericValue == 0) {\r | |
1284 | Session->DefaultTime2Wait = 0;\r | |
1285 | } else if (NumericValue > 3600) {\r | |
1286 | goto ON_ERROR;\r | |
1287 | } else {\r | |
1288 | Session->DefaultTime2Wait = (UINT32) MAX (Session->DefaultTime2Wait, NumericValue);\r | |
1289 | }\r | |
1290 | //\r | |
1291 | // DefaultTime2Retain, result function is Minimum.\r | |
1292 | //\r | |
1293 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2RETAIN);\r | |
1294 | if (Value == NULL) {\r | |
1295 | goto ON_ERROR;\r | |
1296 | }\r | |
1297 | \r | |
1298 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1299 | if (NumericValue == 0) {\r | |
1300 | Session->DefaultTime2Retain = 0;\r | |
1301 | } else if (NumericValue > 3600) {\r | |
1302 | goto ON_ERROR;\r | |
1303 | } else {\r | |
1304 | Session->DefaultTime2Retain = (UINT32) MIN (Session->DefaultTime2Retain, NumericValue);\r | |
1305 | }\r | |
1306 | //\r | |
1307 | // MaxOutstandingR2T, result function is Minimum.\r | |
1308 | //\r | |
1309 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_OUTSTANDING_R2T);\r | |
1310 | if (Value == NULL) {\r | |
1311 | goto ON_ERROR;\r | |
1312 | }\r | |
1313 | \r | |
1314 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1315 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1316 | goto ON_ERROR;\r | |
1317 | }\r | |
1318 | \r | |
1319 | Session->MaxOutstandingR2T = (UINT16) MIN (Session->MaxOutstandingR2T, NumericValue);\r | |
1320 | \r | |
1321 | //\r | |
1322 | // Remove declarative key-value paris if any.\r | |
1323 | //\r | |
1324 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_SESSION_TYPE);\r | |
1325 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ALIAS);\r | |
1326 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_PORTAL_GROUP_TAG);\r | |
1327 | \r | |
e48e37fc | 1328 | if (IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1329 | //\r |
1330 | // Succeed if no more keys in the list.\r | |
1331 | //\r | |
1332 | Status = EFI_SUCCESS;\r | |
1333 | }\r | |
1334 | \r | |
1335 | ON_ERROR:\r | |
1336 | \r | |
1337 | IScsiFreeKeyValueList (KeyValueList);\r | |
1338 | \r | |
e48e37fc | 1339 | gBS->FreePool (Data);\r |
6a690e23 | 1340 | \r |
1341 | return Status;\r | |
1342 | }\r | |
1343 | \r | |
12618416 | 1344 | /**\r |
6a690e23 | 1345 | Fill the oprational prameters.\r |
1346 | \r | |
c5de0d55 | 1347 | @param[in] Conn The connection in iSCSI login.\r |
1348 | @param[in, out] Pdu The iSCSI login request PDU to fill the parameters.\r | |
6a690e23 | 1349 | \r |
12618416 | 1350 | @retval EFI_SUCCESS The parmeters are filled into the iSCSI login request PDU.\r |
12618416 | 1351 | **/\r |
1352 | EFI_STATUS\r | |
1353 | IScsiFillOpParams (\r | |
1354 | IN ISCSI_CONNECTION *Conn,\r | |
c5de0d55 | 1355 | IN OUT NET_BUF *Pdu\r |
12618416 | 1356 | )\r |
6a690e23 | 1357 | {\r |
1358 | ISCSI_SESSION *Session;\r | |
1359 | CHAR8 Value[256];\r | |
1360 | \r | |
1361 | Session = Conn->Session;\r | |
1362 | \r | |
1363 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->HeaderDigest == ISCSI_DIGEST_CRC32) ? "None,CRC32" : "None");\r | |
1364 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_HEADER_DIGEST, Value);\r | |
1365 | \r | |
1366 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->DataDigest == ISCSI_DIGEST_CRC32) ? "None,CRC32" : "None");\r | |
1367 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_DIGEST, Value);\r | |
1368 | \r | |
1369 | AsciiSPrint (Value, sizeof (Value), "%d", Session->ErrorRecoveryLevel);\r | |
1370 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_ERROR_RECOVERY_LEVEL, Value);\r | |
1371 | \r | |
1372 | AsciiSPrint (Value, sizeof (Value), "%a", Session->InitialR2T ? "Yes" : "No");\r | |
1373 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_INITIAL_R2T, Value);\r | |
1374 | \r | |
1375 | AsciiSPrint (Value, sizeof (Value), "%a", Session->ImmediateData ? "Yes" : "No");\r | |
1376 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_IMMEDIATE_DATA, Value);\r | |
1377 | \r | |
1378 | AsciiSPrint (Value, sizeof (Value), "%d", Conn->MaxRecvDataSegmentLength);\r | |
1379 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH, Value);\r | |
1380 | \r | |
1381 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxBurstLength);\r | |
1382 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_BURST_LENGTH, Value);\r | |
1383 | \r | |
1384 | AsciiSPrint (Value, sizeof (Value), "%d", Session->FirstBurstLength);\r | |
1385 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_FIRST_BURST_LENGTH, Value);\r | |
1386 | \r | |
1387 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxConnections);\r | |
1388 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_CONNECTIONS, Value);\r | |
1389 | \r | |
1390 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataPDUInOrder ? "Yes" : "No");\r | |
1391 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_PDU_IN_ORDER, Value);\r | |
1392 | \r | |
1393 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataSequenceInOrder ? "Yes" : "No");\r | |
1394 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER, Value);\r | |
1395 | \r | |
1396 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Wait);\r | |
1397 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2WAIT, Value);\r | |
1398 | \r | |
1399 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Retain);\r | |
1400 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2RETAIN, Value);\r | |
1401 | \r | |
1402 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxOutstandingR2T);\r | |
1403 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_OUTSTANDING_R2T, Value);\r | |
1404 | \r | |
1405 | return EFI_SUCCESS;\r | |
1406 | }\r | |
1407 | \r | |
12618416 | 1408 | /**\r |
6a690e23 | 1409 | Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r |
1410 | \r | |
c5de0d55 | 1411 | @param[in, out] Pdu The iSCSI pdu which contains segments to pad.\r |
1412 | @param[in] Len The length of the last semgnet in the PDU.\r | |
6a690e23 | 1413 | \r |
12618416 | 1414 | @retval EFI_SUCCESS The segment is padded or no need to pad it.\r |
12618416 | 1415 | @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r |
1416 | padding bytes.\r | |
12618416 | 1417 | **/\r |
1418 | EFI_STATUS\r | |
1419 | IScsiPadSegment (\r | |
c5de0d55 | 1420 | IN OUT NET_BUF *Pdu,\r |
1421 | IN UINT32 Len\r | |
12618416 | 1422 | )\r |
6a690e23 | 1423 | {\r |
1424 | UINT32 PadLen;\r | |
1425 | UINT8 *Data;\r | |
1426 | \r | |
1427 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1428 | \r | |
1429 | if (PadLen != 0) {\r | |
1430 | Data = NetbufAllocSpace (Pdu, PadLen, NET_BUF_TAIL);\r | |
1431 | if (Data == NULL) {\r | |
1432 | return EFI_OUT_OF_RESOURCES;\r | |
1433 | }\r | |
1434 | \r | |
e48e37fc | 1435 | ZeroMem (Data, PadLen);\r |
6a690e23 | 1436 | }\r |
1437 | \r | |
1438 | return EFI_SUCCESS;\r | |
1439 | }\r | |
1440 | \r | |
12618416 | 1441 | /**\r |
6a690e23 | 1442 | Build a key-value list from the data segment.\r |
1443 | \r | |
db3e605d | 1444 | @param[in] Data The data segment containing the key-value pairs.\r |
1445 | @param[in] Len Length of the data segment.\r | |
6a690e23 | 1446 | \r |
db3e605d | 1447 | @return The key-value list.\r |
963dbb30 | 1448 | @retval NULL Other errors as indicated.\r |
12618416 | 1449 | **/\r |
1450 | LIST_ENTRY *\r | |
1451 | IScsiBuildKeyValueList (\r | |
1452 | IN CHAR8 *Data,\r | |
1453 | IN UINT32 Len\r | |
1454 | )\r | |
6a690e23 | 1455 | {\r |
e48e37fc | 1456 | LIST_ENTRY *ListHead;\r |
6a690e23 | 1457 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1458 | \r | |
e48e37fc | 1459 | ListHead = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 1460 | if (ListHead == NULL) {\r |
1461 | return NULL;\r | |
1462 | }\r | |
1463 | \r | |
e48e37fc | 1464 | InitializeListHead (ListHead);\r |
6a690e23 | 1465 | \r |
1466 | while (Len > 0) {\r | |
e48e37fc | 1467 | KeyValuePair = AllocatePool (sizeof (ISCSI_KEY_VALUE_PAIR));\r |
6a690e23 | 1468 | if (KeyValuePair == NULL) {\r |
1469 | goto ON_ERROR;\r | |
1470 | }\r | |
1471 | \r | |
e48e37fc | 1472 | InitializeListHead (&KeyValuePair->List);\r |
6a690e23 | 1473 | \r |
1474 | KeyValuePair->Key = Data;\r | |
1475 | \r | |
1476 | while ((Len > 0) && (*Data != '=')) {\r | |
1477 | Len--;\r | |
1478 | Data++;\r | |
1479 | }\r | |
1480 | \r | |
1481 | if (*Data == '=') {\r | |
1482 | *Data = '\0';\r | |
1483 | \r | |
1484 | Data++;\r | |
1485 | Len--;\r | |
1486 | } else {\r | |
e48e37fc | 1487 | gBS->FreePool (KeyValuePair);\r |
6a690e23 | 1488 | goto ON_ERROR;\r |
1489 | }\r | |
1490 | \r | |
1491 | KeyValuePair->Value = Data;\r | |
1492 | \r | |
e48e37fc | 1493 | InsertTailList (ListHead, &KeyValuePair->List);;\r |
6a690e23 | 1494 | \r |
1495 | Data += AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1496 | Len -= (UINT32) AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1497 | }\r | |
1498 | \r | |
1499 | return ListHead;\r | |
1500 | \r | |
1501 | ON_ERROR:\r | |
1502 | \r | |
1503 | IScsiFreeKeyValueList (ListHead);\r | |
1504 | \r | |
1505 | return NULL;\r | |
1506 | }\r | |
1507 | \r | |
12618416 | 1508 | /**\r |
6a690e23 | 1509 | Get the value string by the key name from the key-value list. If found,\r |
1510 | the key-value entry will be removed from the list.\r | |
1511 | \r | |
c5de0d55 | 1512 | @param[in, out] KeyValueList The key-value list.\r |
1513 | @param[in] Key The key name to find.\r | |
6a690e23 | 1514 | \r |
db3e605d | 1515 | @return The value string.\r |
12618416 | 1516 | **/\r |
1517 | CHAR8 *\r | |
1518 | IScsiGetValueByKeyFromList (\r | |
c5de0d55 | 1519 | IN OUT LIST_ENTRY *KeyValueList,\r |
12618416 | 1520 | IN CHAR8 *Key\r |
1521 | )\r | |
6a690e23 | 1522 | {\r |
e48e37fc | 1523 | LIST_ENTRY *Entry;\r |
6a690e23 | 1524 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1525 | CHAR8 *Value;\r | |
1526 | \r | |
1527 | Value = NULL;\r | |
1528 | \r | |
1529 | NET_LIST_FOR_EACH (Entry, KeyValueList) {\r | |
1530 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1531 | \r | |
1532 | if (AsciiStrCmp (KeyValuePair->Key, Key) == 0) {\r | |
1533 | Value = KeyValuePair->Value;\r | |
1534 | \r | |
e48e37fc | 1535 | RemoveEntryList (&KeyValuePair->List);\r |
1536 | gBS->FreePool (KeyValuePair);\r | |
6a690e23 | 1537 | break;\r |
1538 | }\r | |
1539 | }\r | |
1540 | \r | |
1541 | return Value;\r | |
1542 | }\r | |
1543 | \r | |
12618416 | 1544 | /**\r |
1545 | Free the key-value list.\r | |
1546 | \r | |
db3e605d | 1547 | @param[in] KeyValueList The key-value list.\r |
12618416 | 1548 | **/\r |
6a690e23 | 1549 | VOID\r |
1550 | IScsiFreeKeyValueList (\r | |
e48e37fc | 1551 | IN LIST_ENTRY *KeyValueList\r |
6a690e23 | 1552 | )\r |
6a690e23 | 1553 | {\r |
e48e37fc | 1554 | LIST_ENTRY *Entry;\r |
6a690e23 | 1555 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1556 | \r | |
e48e37fc | 1557 | while (!IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1558 | Entry = NetListRemoveHead (KeyValueList);\r |
1559 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1560 | \r | |
e48e37fc | 1561 | gBS->FreePool (KeyValuePair);\r |
6a690e23 | 1562 | }\r |
1563 | \r | |
e48e37fc | 1564 | gBS->FreePool (KeyValueList);\r |
6a690e23 | 1565 | }\r |
1566 | \r | |
12618416 | 1567 | /**\r |
6a690e23 | 1568 | Normalize the iSCSI name according to RFC.\r |
1569 | \r | |
c5de0d55 | 1570 | @param[in, out] Name The iSCSI name.\r |
1571 | @param[in] Len length of the iSCSI name.\r | |
6a690e23 | 1572 | \r |
12618416 | 1573 | @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r |
12618416 | 1574 | @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r |
12618416 | 1575 | **/\r |
1576 | EFI_STATUS\r | |
1577 | IScsiNormalizeName (\r | |
c5de0d55 | 1578 | IN OUT CHAR8 *Name,\r |
1579 | IN UINTN Len\r | |
12618416 | 1580 | )\r |
6a690e23 | 1581 | {\r |
1582 | UINTN Index;\r | |
1583 | \r | |
1584 | for (Index = 0; Index < Len; Index++) {\r | |
1585 | if (NET_IS_UPPER_CASE_CHAR (Name[Index])) {\r | |
1586 | //\r | |
1587 | // Convert the upper-case characters to lower-case ones\r | |
1588 | //\r | |
69b0882d | 1589 | Name[Index] = (CHAR8) (Name[Index] - 'A' + 'a');\r |
6a690e23 | 1590 | }\r |
1591 | \r | |
1592 | if (!NET_IS_LOWER_CASE_CHAR (Name[Index]) &&\r | |
1593 | !NET_IS_DIGIT (Name[Index]) &&\r | |
1594 | (Name[Index] != '-') &&\r | |
1595 | (Name[Index] != '.') &&\r | |
1596 | (Name[Index] != ':')\r | |
1597 | ) {\r | |
1598 | //\r | |
1599 | // ASCII dash, dot, colon lower-case characters and digit characters\r | |
1600 | // are allowed.\r | |
1601 | //\r | |
1602 | return EFI_PROTOCOL_ERROR;\r | |
1603 | }\r | |
1604 | }\r | |
1605 | \r | |
e48e37fc | 1606 | if ((Len < 4) || (CompareMem (Name, "iqn.", 4) != 0)) {\r |
6a690e23 | 1607 | //\r |
1608 | // Only IQN format is accepted now.\r | |
1609 | //\r | |
1610 | return EFI_PROTOCOL_ERROR;\r | |
1611 | }\r | |
1612 | \r | |
1613 | return EFI_SUCCESS;\r | |
1614 | }\r | |
1615 | \r | |
12618416 | 1616 | /**\r |
6a690e23 | 1617 | Create an iSCSI task control block.\r |
1618 | \r | |
db3e605d | 1619 | @param[in] Conn The connection on which the task control block will be created.\r |
1620 | @param[out] Tcb The newly created task control block.\r | |
6a690e23 | 1621 | \r |
12618416 | 1622 | @retval EFI_SUCCESS The task control block is created.\r |
12618416 | 1623 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
db3e605d | 1624 | @retval EFI_NOT_READY The target can not accept new commands.\r |
12618416 | 1625 | **/\r |
1626 | EFI_STATUS\r | |
1627 | IScsiNewTcb (\r | |
1628 | IN ISCSI_CONNECTION *Conn,\r | |
1629 | OUT ISCSI_TCB **Tcb\r | |
1630 | )\r | |
6a690e23 | 1631 | {\r |
1632 | ISCSI_SESSION *Session;\r | |
1633 | ISCSI_TCB *NewTcb;\r | |
1634 | \r | |
1635 | ASSERT (Tcb != NULL);\r | |
1636 | \r | |
1637 | Session = Conn->Session;\r | |
1638 | \r | |
1639 | if (ISCSI_SEQ_GT (Session->CmdSN, Session->MaxCmdSN)) {\r | |
1640 | return EFI_NOT_READY;\r | |
1641 | }\r | |
1642 | \r | |
e48e37fc | 1643 | NewTcb = AllocateZeroPool (sizeof (ISCSI_TCB));\r |
6a690e23 | 1644 | if (NewTcb == NULL) {\r |
1645 | return EFI_OUT_OF_RESOURCES;\r | |
1646 | }\r | |
1647 | \r | |
e48e37fc | 1648 | InitializeListHead (&NewTcb->Link);\r |
6a690e23 | 1649 | \r |
1650 | NewTcb->SoFarInOrder = TRUE;\r | |
1651 | NewTcb->InitiatorTaskTag = Session->InitiatorTaskTag;\r | |
1652 | NewTcb->CmdSN = Session->CmdSN;\r | |
1653 | NewTcb->Conn = Conn;\r | |
1654 | \r | |
e48e37fc | 1655 | InsertTailList (&Session->TcbList, &NewTcb->Link);\r |
6a690e23 | 1656 | \r |
1657 | //\r | |
1658 | // Advance the initiator task tag.\r | |
1659 | //\r | |
1660 | Session->InitiatorTaskTag++;\r | |
1661 | Session->CmdSN++;\r | |
1662 | \r | |
1663 | *Tcb = NewTcb;\r | |
1664 | \r | |
1665 | return EFI_SUCCESS;\r | |
1666 | }\r | |
1667 | \r | |
12618416 | 1668 | /**\r |
6a690e23 | 1669 | Delete the tcb from the connection and destroy it.\r |
1670 | \r | |
db3e605d | 1671 | @param[in] Tcb The tcb to delete.\r |
12618416 | 1672 | **/\r |
1673 | VOID\r | |
1674 | IScsiDelTcb (\r | |
1675 | IN ISCSI_TCB *Tcb\r | |
1676 | )\r | |
6a690e23 | 1677 | {\r |
e48e37fc | 1678 | RemoveEntryList (&Tcb->Link);\r |
6a690e23 | 1679 | \r |
e48e37fc | 1680 | gBS->FreePool (Tcb);\r |
6a690e23 | 1681 | }\r |
1682 | \r | |
12618416 | 1683 | /**\r |
6a690e23 | 1684 | Find the task control block by the initator task tag.\r |
1685 | \r | |
db3e605d | 1686 | @param[in] TcbList The tcb list.\r |
1687 | @param[in] InitiatorTaskTag The initiator task tag.\r | |
6a690e23 | 1688 | \r |
db3e605d | 1689 | @return The task control block found.\r |
12618416 | 1690 | **/\r |
1691 | ISCSI_TCB *\r | |
1692 | IScsiFindTcbByITT (\r | |
1693 | IN LIST_ENTRY *TcbList,\r | |
1694 | IN UINT32 InitiatorTaskTag\r | |
1695 | )\r | |
6a690e23 | 1696 | {\r |
1697 | ISCSI_TCB *Tcb;\r | |
e48e37fc | 1698 | LIST_ENTRY *Entry;\r |
6a690e23 | 1699 | \r |
1700 | Tcb = NULL;\r | |
1701 | \r | |
1702 | NET_LIST_FOR_EACH (Entry, TcbList) {\r | |
1703 | Tcb = NET_LIST_USER_STRUCT (Entry, ISCSI_TCB, Link);\r | |
1704 | \r | |
1705 | if (Tcb->InitiatorTaskTag == InitiatorTaskTag) {\r | |
1706 | break;\r | |
1707 | }\r | |
1708 | \r | |
1709 | Tcb = NULL;\r | |
1710 | }\r | |
1711 | \r | |
1712 | return Tcb;\r | |
1713 | }\r | |
1714 | \r | |
12618416 | 1715 | /**\r |
6a690e23 | 1716 | Create a data segment, pad it and calculate the CRC if needed.\r |
1717 | \r | |
db3e605d | 1718 | @param[in] Data The data to fill into the data segment.\r |
1719 | @param[in] Len Length of the data.\r | |
1720 | @param[in] DataDigest Whether to calculate CRC for this data segment.\r | |
6a690e23 | 1721 | \r |
db3e605d | 1722 | @return The net buffer wrapping the data segment.\r |
12618416 | 1723 | **/\r |
1724 | NET_BUF *\r | |
1725 | IScsiNewDataSegment (\r | |
1726 | IN UINT8 *Data,\r | |
1727 | IN UINT32 Len,\r | |
1728 | IN BOOLEAN DataDigest\r | |
1729 | )\r | |
6a690e23 | 1730 | {\r |
1731 | NET_FRAGMENT Fragment[2];\r | |
1732 | UINT32 FragmentCount;\r | |
1733 | UINT32 PadLen;\r | |
1734 | NET_BUF *DataSeg;\r | |
1735 | \r | |
1736 | Fragment[0].Len = Len;\r | |
1737 | Fragment[0].Bulk = Data;\r | |
1738 | \r | |
1739 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1740 | if (PadLen != 0) {\r | |
1741 | Fragment[1].Len = PadLen;\r | |
1742 | Fragment[1].Bulk = (UINT8 *) &mDataSegPad;\r | |
1743 | \r | |
1744 | FragmentCount = 2;\r | |
1745 | } else {\r | |
1746 | FragmentCount = 1;\r | |
1747 | }\r | |
1748 | \r | |
1749 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1750 | \r | |
1751 | return DataSeg;\r | |
1752 | }\r | |
1753 | \r | |
12618416 | 1754 | /**\r |
6a690e23 | 1755 | Create a iSCSI SCSI command PDU to encapsulate the command issued\r |
1756 | by SCSI through the EXT SCSI PASS THRU Protocol.\r | |
1757 | \r | |
db3e605d | 1758 | @param[in] Packet The EXT SCSI PASS THRU request packet containing the SCSI command.\r |
1759 | @param[in] Lun The LUN.\r | |
1760 | @param[in] Tcb The tcb assocated with this SCSI command.\r | |
6a690e23 | 1761 | \r |
db3e605d | 1762 | @return The created iSCSI SCSI command PDU.\r |
963dbb30 | 1763 | @retval NULL Other errors as indicated.\r |
12618416 | 1764 | **/\r |
1765 | NET_BUF *\r | |
1766 | IScsiNewScsiCmdPdu (\r | |
1767 | IN EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r | |
1768 | IN UINT64 Lun,\r | |
1769 | IN ISCSI_TCB *Tcb\r | |
1770 | )\r | |
6a690e23 | 1771 | {\r |
e48e37fc | 1772 | LIST_ENTRY *NbufList;\r |
6a690e23 | 1773 | NET_BUF *Pdu;\r |
1774 | NET_BUF *PduHeader;\r | |
1775 | NET_BUF *DataSeg;\r | |
1776 | SCSI_COMMAND *ScsiCmd;\r | |
1777 | UINT8 AHSLength;\r | |
1778 | UINT32 Length;\r | |
1779 | ISCSI_ADDITIONAL_HEADER *Header;\r | |
1780 | ISCSI_BI_EXP_READ_DATA_LEN_AHS *BiExpReadDataLenAHS;\r | |
1781 | ISCSI_SESSION *Session;\r | |
1782 | UINT32 ImmediateDataLen;\r | |
1783 | \r | |
1784 | AHSLength = 0;\r | |
1785 | \r | |
1786 | if (Packet->DataDirection == DataBi) {\r | |
1787 | //\r | |
1788 | // Bi directional Read/Write command, the bidirectional expected\r | |
1789 | // read data length AHS is required.\r | |
1790 | //\r | |
1791 | AHSLength += sizeof (ISCSI_BI_EXP_READ_DATA_LEN_AHS);\r | |
1792 | }\r | |
1793 | \r | |
1794 | if (Packet->CdbLength > 16) {\r | |
1795 | //\r | |
1796 | // The CDB exceeds 16 bytes, an extended CDB AHS is required.\r | |
1797 | //\r | |
69b0882d | 1798 | AHSLength = (UINT8) (AHSLength + (ISCSI_ROUNDUP (Packet->CdbLength - 16) + sizeof (ISCSI_ADDITIONAL_HEADER)));\r |
6a690e23 | 1799 | }\r |
1800 | \r | |
1801 | Length = sizeof (SCSI_COMMAND) + AHSLength;\r | |
1802 | PduHeader = NetbufAlloc (Length);\r | |
1803 | if (PduHeader == NULL) {\r | |
1804 | return NULL;\r | |
1805 | }\r | |
1806 | \r | |
1807 | ScsiCmd = (SCSI_COMMAND *) NetbufAllocSpace (PduHeader, Length, NET_BUF_TAIL);\r | |
1808 | Header = (ISCSI_ADDITIONAL_HEADER *) (ScsiCmd + 1);\r | |
1809 | \r | |
e48e37fc | 1810 | ZeroMem (ScsiCmd, Length);\r |
6a690e23 | 1811 | \r |
1812 | ISCSI_SET_OPCODE (ScsiCmd, ISCSI_OPCODE_SCSI_CMD, 0);\r | |
1813 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_TASK_ATTR_SIMPLE);\r | |
1814 | \r | |
1815 | //\r | |
1816 | // Set the READ/WRITE flags according to the IO type of this request.\r | |
1817 | //\r | |
1818 | switch (Packet->DataDirection) {\r | |
1819 | case DataIn:\r | |
1820 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ);\r | |
1821 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->InTransferLength);\r | |
1822 | break;\r | |
1823 | \r | |
1824 | case DataOut:\r | |
1825 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_WRITE);\r | |
1826 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1827 | break;\r | |
1828 | \r | |
1829 | case DataBi:\r | |
1830 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ | SCSI_CMD_PDU_FLAG_WRITE);\r | |
1831 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1832 | \r | |
1833 | //\r | |
1834 | // Fill the bidirectional expected read data length AHS.\r | |
1835 | //\r | |
1836 | BiExpReadDataLenAHS = (ISCSI_BI_EXP_READ_DATA_LEN_AHS *) Header;\r | |
1837 | Header = (ISCSI_ADDITIONAL_HEADER *) (BiExpReadDataLenAHS + 1);\r | |
1838 | \r | |
1839 | BiExpReadDataLenAHS->Length = NTOHS (5);\r | |
1840 | BiExpReadDataLenAHS->Type = ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN;\r | |
1841 | BiExpReadDataLenAHS->ExpReadDataLength = NTOHL (Packet->InTransferLength);\r | |
1842 | \r | |
1843 | break;\r | |
1844 | }\r | |
1845 | \r | |
1846 | ScsiCmd->TotalAHSLength = AHSLength;\r | |
e48e37fc | 1847 | CopyMem (ScsiCmd->Lun, &Lun, sizeof (ScsiCmd->Lun));\r |
6a690e23 | 1848 | ScsiCmd->InitiatorTaskTag = NTOHL (Tcb->InitiatorTaskTag);\r |
1849 | ScsiCmd->CmdSN = NTOHL (Tcb->CmdSN);\r | |
1850 | ScsiCmd->ExpStatSN = NTOHL (Tcb->Conn->ExpStatSN);\r | |
1851 | \r | |
e48e37fc | 1852 | CopyMem (ScsiCmd->CDB, Packet->Cdb, sizeof (ScsiCmd->CDB));\r |
6a690e23 | 1853 | \r |
1854 | if (Packet->CdbLength > 16) {\r | |
1855 | Header->Length = NTOHS (Packet->CdbLength - 15);\r | |
1856 | Header->Type = ISCSI_AHS_TYPE_EXT_CDB;\r | |
1857 | \r | |
e48e37fc | 1858 | CopyMem (Header + 1, (UINT8 *) Packet->Cdb + 16, Packet->CdbLength - 16);\r |
6a690e23 | 1859 | }\r |
1860 | \r | |
1861 | Pdu = PduHeader;\r | |
1862 | Session = Tcb->Conn->Session;\r | |
1863 | ImmediateDataLen = 0;\r | |
1864 | \r | |
1865 | if (Session->ImmediateData && (Packet->OutTransferLength != 0)) {\r | |
1866 | //\r | |
1867 | // Send immediate data in this SCSI Command PDU. The length of the immeidate\r | |
1868 | // data is the minimum of FirstBurstLength, the data length to be xfered and\r | |
1869 | // the MaxRecvdataSegmentLength on this connection.\r | |
1870 | //\r | |
1871 | ImmediateDataLen = MIN (Session->FirstBurstLength, Packet->OutTransferLength);\r | |
1872 | ImmediateDataLen = MIN (ImmediateDataLen, Tcb->Conn->MaxRecvDataSegmentLength);\r | |
1873 | \r | |
1874 | //\r | |
1875 | // Update the data segment length in the PDU header.\r | |
1876 | //\r | |
1877 | ISCSI_SET_DATASEG_LEN (ScsiCmd, ImmediateDataLen);\r | |
1878 | \r | |
1879 | //\r | |
1880 | // Create the data segment.\r | |
1881 | //\r | |
1882 | DataSeg = IScsiNewDataSegment ((UINT8 *) Packet->OutDataBuffer, ImmediateDataLen, FALSE);\r | |
1883 | if (DataSeg == NULL) {\r | |
1884 | NetbufFree (PduHeader);\r | |
1885 | Pdu = NULL;\r | |
1886 | goto ON_EXIT;\r | |
1887 | }\r | |
1888 | \r | |
e48e37fc | 1889 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 1890 | if (NbufList == NULL) {\r |
1891 | NetbufFree (PduHeader);\r | |
1892 | NetbufFree (DataSeg);\r | |
1893 | \r | |
1894 | Pdu = NULL;\r | |
1895 | goto ON_EXIT;\r | |
1896 | }\r | |
1897 | \r | |
e48e37fc | 1898 | InitializeListHead (NbufList);\r |
1899 | InsertTailList (NbufList, &PduHeader->List);\r | |
1900 | InsertTailList (NbufList, &DataSeg->List);\r | |
6a690e23 | 1901 | \r |
1902 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1903 | if (Pdu == NULL) {\r | |
1904 | IScsiFreeNbufList (NbufList);\r | |
1905 | }\r | |
1906 | }\r | |
1907 | \r | |
1908 | if (Session->InitialR2T ||\r | |
1909 | (ImmediateDataLen == Session->FirstBurstLength) ||\r | |
1910 | (ImmediateDataLen == Packet->OutTransferLength)\r | |
1911 | ) {\r | |
1912 | //\r | |
1913 | // Unsolicited data out sequence is not allowed,\r | |
1914 | // or FirstBustLength data is already sent out by immediate data\r | |
1915 | // or all the OUT data accompany this SCSI packet is sent as\r | |
1916 | // immediate data, the final flag should be set on this SCSI Command\r | |
1917 | // PDU.\r | |
1918 | //\r | |
1919 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_BHS_FLAG_FINAL);\r | |
1920 | }\r | |
1921 | \r | |
1922 | ON_EXIT:\r | |
1923 | \r | |
1924 | return Pdu;\r | |
1925 | }\r | |
1926 | \r | |
12618416 | 1927 | /**\r |
1928 | Create a new iSCSI SCSI Data Out PDU.\r | |
1929 | \r | |
db3e605d | 1930 | @param[in] Data The data to put into the Data Out PDU.\r |
1931 | @param[in] Len Length of the data.\r | |
1932 | @param[in] DataSN The DataSN of the Data Out PDU.\r | |
1933 | @param[in] Tcb The task control block of this Data Out PDU.\r | |
1934 | @param[in] Lun The LUN.\r | |
12618416 | 1935 | \r |
db3e605d | 1936 | @return The net buffer wrapping the Data Out PDU.\r |
963dbb30 | 1937 | @retval NULL Other errors as indicated.\r |
12618416 | 1938 | **/\r |
6a690e23 | 1939 | NET_BUF *\r |
1940 | IScsiNewDataOutPdu (\r | |
1941 | IN UINT8 *Data,\r | |
1942 | IN UINT32 Len,\r | |
1943 | IN UINT32 DataSN,\r | |
1944 | IN ISCSI_TCB *Tcb,\r | |
1945 | IN UINT64 Lun\r | |
1946 | )\r | |
6a690e23 | 1947 | {\r |
e48e37fc | 1948 | LIST_ENTRY *NbufList;\r |
6a690e23 | 1949 | NET_BUF *PduHdr;\r |
1950 | NET_BUF *DataSeg;\r | |
1951 | NET_BUF *Pdu;\r | |
1952 | ISCSI_SCSI_DATA_OUT *DataOutHdr;\r | |
1953 | ISCSI_XFER_CONTEXT *XferContext;\r | |
1954 | \r | |
e48e37fc | 1955 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 1956 | if (NbufList == NULL) {\r |
1957 | return NULL;\r | |
1958 | }\r | |
1959 | \r | |
e48e37fc | 1960 | InitializeListHead (NbufList);\r |
6a690e23 | 1961 | \r |
1962 | //\r | |
1963 | // Allocate memory for the BHS.\r | |
1964 | //\r | |
1965 | PduHdr = NetbufAlloc (sizeof (ISCSI_SCSI_DATA_OUT));\r | |
1966 | if (PduHdr == NULL) {\r | |
e48e37fc | 1967 | gBS->FreePool (NbufList);\r |
6a690e23 | 1968 | return NULL;\r |
1969 | }\r | |
1970 | //\r | |
1971 | // Insert the BHS into the buffer list.\r | |
1972 | //\r | |
e48e37fc | 1973 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 1974 | \r |
1975 | DataOutHdr = (ISCSI_SCSI_DATA_OUT *) NetbufAllocSpace (PduHdr, sizeof (ISCSI_SCSI_DATA_OUT), NET_BUF_TAIL);\r | |
1976 | XferContext = &Tcb->XferContext;\r | |
1977 | \r | |
e48e37fc | 1978 | ZeroMem (DataOutHdr, sizeof (ISCSI_SCSI_DATA_OUT));\r |
6a690e23 | 1979 | \r |
1980 | //\r | |
1981 | // Set the flags and fields of the Data Out PDU BHS.\r | |
1982 | //\r | |
1983 | ISCSI_SET_OPCODE (DataOutHdr, ISCSI_OPCODE_SCSI_DATA_OUT, 0);\r | |
1984 | ISCSI_SET_DATASEG_LEN (DataOutHdr, Len);\r | |
1985 | \r | |
1986 | DataOutHdr->InitiatorTaskTag = HTONL (Tcb->InitiatorTaskTag);\r | |
1987 | DataOutHdr->TargetTransferTag = HTONL (XferContext->TargetTransferTag);\r | |
1988 | DataOutHdr->ExpStatSN = HTONL (Tcb->Conn->ExpStatSN);\r | |
1989 | DataOutHdr->DataSN = HTONL (DataSN);\r | |
1990 | DataOutHdr->BufferOffset = HTONL (XferContext->Offset);\r | |
1991 | \r | |
1992 | if (XferContext->TargetTransferTag != ISCSI_RESERVED_TAG) {\r | |
e48e37fc | 1993 | CopyMem (&DataOutHdr->Lun, &Lun, sizeof (DataOutHdr->Lun));\r |
6a690e23 | 1994 | }\r |
1995 | //\r | |
1996 | // Build the data segment for this Data Out PDU.\r | |
1997 | //\r | |
1998 | DataSeg = IScsiNewDataSegment (Data, Len, FALSE);\r | |
1999 | if (DataSeg == NULL) {\r | |
2000 | IScsiFreeNbufList (NbufList);\r | |
2001 | return NULL;\r | |
2002 | }\r | |
2003 | //\r | |
2004 | // Put the data segment into the buffer list and combine it with the BHS\r | |
2005 | // into a full Data Out PDU.\r | |
2006 | //\r | |
e48e37fc | 2007 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 2008 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r |
2009 | if (Pdu == NULL) {\r | |
2010 | IScsiFreeNbufList (NbufList);\r | |
2011 | }\r | |
2012 | \r | |
2013 | return Pdu;\r | |
2014 | }\r | |
2015 | \r | |
12618416 | 2016 | /**\r |
6a690e23 | 2017 | Generate a consecutive sequence of iSCSI SCSI Data Out PDUs.\r |
2018 | \r | |
db3e605d | 2019 | @param[in] Data The data which will be carried by the sequence of iSCSI SCSI Data Out PDUs.\r |
2020 | @param[in] Tcb The task control block of the data to send out.\r | |
2021 | @param[in] Lun The LUN the data will be sent to.\r | |
6a690e23 | 2022 | \r |
db3e605d | 2023 | @return A list of net buffers with each of them wraps an iSCSI SCSI Data Out PDU.\r |
963dbb30 | 2024 | @retval NULL Other errors as indicated.\r |
12618416 | 2025 | **/\r |
2026 | LIST_ENTRY *\r | |
2027 | IScsiGenerateDataOutPduSequence (\r | |
2028 | IN UINT8 *Data,\r | |
2029 | IN ISCSI_TCB *Tcb,\r | |
2030 | IN UINT64 Lun\r | |
2031 | )\r | |
6a690e23 | 2032 | {\r |
e48e37fc | 2033 | LIST_ENTRY *PduList;\r |
6a690e23 | 2034 | UINT32 DataSN;\r |
2035 | UINT32 DataLen;\r | |
2036 | NET_BUF *DataOutPdu;\r | |
2037 | ISCSI_CONNECTION *Conn;\r | |
2038 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2039 | \r | |
e48e37fc | 2040 | PduList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 2041 | if (PduList == NULL) {\r |
2042 | return NULL;\r | |
2043 | }\r | |
2044 | \r | |
e48e37fc | 2045 | InitializeListHead (PduList);\r |
6a690e23 | 2046 | \r |
2047 | DataSN = 0;\r | |
2048 | Conn = Tcb->Conn;\r | |
2049 | DataOutPdu = NULL;\r | |
2050 | XferContext = &Tcb->XferContext;\r | |
2051 | \r | |
2052 | while (XferContext->DesiredLength > 0) {\r | |
2053 | //\r | |
2054 | // Determine the length of data this Data Out PDU can carry.\r | |
2055 | //\r | |
2056 | DataLen = MIN (XferContext->DesiredLength, Conn->MaxRecvDataSegmentLength);\r | |
6a690e23 | 2057 | \r |
2058 | //\r | |
2059 | // Create a Data Out PDU.\r | |
2060 | //\r | |
2061 | DataOutPdu = IScsiNewDataOutPdu (Data, DataLen, DataSN, Tcb, Lun);\r | |
2062 | if (DataOutPdu == NULL) {\r | |
2063 | IScsiFreeNbufList (PduList);\r | |
2064 | PduList = NULL;\r | |
2065 | \r | |
2066 | goto ON_EXIT;\r | |
2067 | }\r | |
2068 | \r | |
e48e37fc | 2069 | InsertTailList (PduList, &DataOutPdu->List);\r |
6a690e23 | 2070 | \r |
2071 | //\r | |
2072 | // Update the context and DataSN.\r | |
2073 | //\r | |
2074 | XferContext->Offset += DataLen;\r | |
2075 | XferContext->DesiredLength -= DataLen;\r | |
2076 | DataSN++;\r | |
e92d66f2 | 2077 | Data += DataLen;\r |
6a690e23 | 2078 | }\r |
2079 | //\r | |
2080 | // Set the F bit for the last data out PDU in this sequence.\r | |
2081 | //\r | |
2082 | ISCSI_SET_FLAG (NetbufGetByte (DataOutPdu, 0, NULL), ISCSI_BHS_FLAG_FINAL);\r | |
2083 | \r | |
2084 | ON_EXIT:\r | |
2085 | \r | |
2086 | return PduList;\r | |
2087 | }\r | |
2088 | \r | |
12618416 | 2089 | /**\r |
6a690e23 | 2090 | Send the Data in a sequence of Data Out PDUs one by one.\r |
2091 | \r | |
db3e605d | 2092 | @param[in] Data The data to carry by Data Out PDUs.\r |
2093 | @param[in] Lun The LUN the data will be sent to.\r | |
2094 | @param[in] Tcb The task control block.\r | |
6a690e23 | 2095 | \r |
12618416 | 2096 | @retval EFI_SUCCES The data is sent out to the LUN.\r |
12618416 | 2097 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
963dbb30 | 2098 | @retval Others Other errors as indicated.\r |
12618416 | 2099 | **/\r |
2100 | EFI_STATUS\r | |
2101 | IScsiSendDataOutPduSequence (\r | |
2102 | IN UINT8 *Data,\r | |
2103 | IN UINT64 Lun,\r | |
2104 | IN ISCSI_TCB *Tcb\r | |
2105 | )\r | |
6a690e23 | 2106 | {\r |
e48e37fc | 2107 | LIST_ENTRY *DataOutPduList;\r |
2108 | LIST_ENTRY *Entry;\r | |
6a690e23 | 2109 | NET_BUF *Pdu;\r |
2110 | EFI_STATUS Status;\r | |
2111 | \r | |
2112 | //\r | |
2113 | // Generate the Data Out PDU sequence.\r | |
2114 | //\r | |
2115 | DataOutPduList = IScsiGenerateDataOutPduSequence (Data, Tcb, Lun);\r | |
2116 | if (DataOutPduList == NULL) {\r | |
2117 | return EFI_OUT_OF_RESOURCES;\r | |
2118 | }\r | |
2119 | \r | |
2120 | Status = EFI_SUCCESS;\r | |
2121 | \r | |
2122 | //\r | |
2123 | // Send the Data Out PDU's one by one.\r | |
2124 | //\r | |
2125 | NET_LIST_FOR_EACH (Entry, DataOutPduList) {\r | |
2126 | Pdu = NET_LIST_USER_STRUCT (Entry, NET_BUF, List);\r | |
2127 | \r | |
2128 | Status = Tcp4IoTransmit (&Tcb->Conn->Tcp4Io, Pdu);\r | |
2129 | if (EFI_ERROR (Status)) {\r | |
2130 | break;\r | |
2131 | }\r | |
2132 | }\r | |
2133 | \r | |
2134 | IScsiFreeNbufList (DataOutPduList);\r | |
2135 | \r | |
2136 | return Status;\r | |
2137 | }\r | |
2138 | \r | |
12618416 | 2139 | /**\r |
6a690e23 | 2140 | Process the received iSCSI SCSI Data In PDU.\r |
2141 | \r | |
db3e605d | 2142 | @param[in] Pdu The Data In PDU received.\r |
2143 | @param[in] Tcb The task control block.\r | |
2144 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2145 | \r |
db3e605d | 2146 | @retval EFI_SUCCES The check on the Data IN PDU is passed and some update\r |
2147 | actions are taken.\r | |
2148 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r | |
2149 | @retval EFI_BAD_BUFFER_SIZEE The buffer was not the proper size for the request.\r | |
963dbb30 | 2150 | @retval Others Other errors as indicated.\r |
12618416 | 2151 | **/\r |
2152 | EFI_STATUS\r | |
2153 | IScsiOnDataInRcvd (\r | |
2154 | IN NET_BUF *Pdu,\r | |
2155 | IN ISCSI_TCB *Tcb,\r | |
2156 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2157 | )\r | |
6a690e23 | 2158 | {\r |
2159 | ISCSI_SCSI_DATA_IN *DataInHdr;\r | |
2160 | EFI_STATUS Status;\r | |
2161 | \r | |
2162 | DataInHdr = (ISCSI_SCSI_DATA_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
2163 | \r | |
2164 | DataInHdr->InitiatorTaskTag = NTOHL (DataInHdr->InitiatorTaskTag);\r | |
2165 | DataInHdr->ExpCmdSN = NTOHL (DataInHdr->ExpCmdSN);\r | |
2166 | DataInHdr->MaxCmdSN = NTOHL (DataInHdr->MaxCmdSN);\r | |
2167 | DataInHdr->DataSN = NTOHL (DataInHdr->DataSN);\r | |
2168 | \r | |
2169 | //\r | |
2170 | // Check the DataSN.\r | |
2171 | //\r | |
2172 | Status = IScsiCheckSN (&Tcb->ExpDataSN, DataInHdr->DataSN);\r | |
2173 | if (EFI_ERROR (Status)) {\r | |
2174 | return Status;\r | |
2175 | }\r | |
2176 | \r | |
2177 | if (DataInHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2178 | return EFI_PROTOCOL_ERROR;\r | |
2179 | }\r | |
2180 | //\r | |
2181 | // Update the command related sequence numbers.\r | |
2182 | //\r | |
2183 | IScsiUpdateCmdSN (Tcb->Conn->Session, DataInHdr->MaxCmdSN, DataInHdr->ExpCmdSN);\r | |
2184 | \r | |
2185 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_STATUS_VALID)) {\r | |
2186 | if (!ISCSI_FLAG_ON (DataInHdr, ISCSI_BHS_FLAG_FINAL)) {\r | |
2187 | //\r | |
2188 | // The S bit is on but the F bit is off.\r | |
2189 | //\r | |
2190 | return EFI_PROTOCOL_ERROR;\r | |
2191 | }\r | |
2192 | \r | |
2193 | Tcb->StatusXferd = TRUE;\r | |
2194 | \r | |
2195 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_OVERFLOW | SCSI_DATA_IN_PDU_FLAG_UNDERFLOW)) {\r | |
2196 | //\r | |
2197 | // Underflow and Overflow are mutual flags.\r | |
2198 | //\r | |
2199 | return EFI_PROTOCOL_ERROR;\r | |
2200 | }\r | |
2201 | //\r | |
2202 | // S bit is on, the StatSN is valid.\r | |
2203 | //\r | |
2204 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NTOHL (DataInHdr->StatSN));\r | |
2205 | if (EFI_ERROR (Status)) {\r | |
2206 | return Status;\r | |
2207 | }\r | |
2208 | \r | |
2209 | Packet->HostAdapterStatus = 0;\r | |
2210 | Packet->TargetStatus = DataInHdr->Status;\r | |
2211 | \r | |
2212 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2213 | Packet->InTransferLength += NTOHL (DataInHdr->ResidualCount);\r | |
2214 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2215 | }\r | |
2216 | \r | |
2217 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2218 | Packet->InTransferLength -= NTOHL (DataInHdr->ResidualCount);\r | |
2219 | }\r | |
2220 | }\r | |
2221 | \r | |
2222 | return Status;\r | |
2223 | }\r | |
2224 | \r | |
12618416 | 2225 | /**\r |
2226 | Process the received iSCSI R2T PDU.\r | |
6a690e23 | 2227 | \r |
db3e605d | 2228 | @param[in] Pdu The R2T PDU received.\r |
2229 | @param[in] Tcb The task control block.\r | |
2230 | @param[in] Lun The Lun.\r | |
2231 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2232 | \r |
12618416 | 2233 | @retval EFI_SUCCES The R2T PDU is valid and the solicited data is sent out.\r |
12618416 | 2234 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
963dbb30 | 2235 | @retval Others Other errors as indicated.\r |
12618416 | 2236 | **/\r |
2237 | EFI_STATUS\r | |
2238 | IScsiOnR2TRcvd (\r | |
2239 | IN NET_BUF *Pdu,\r | |
2240 | IN ISCSI_TCB *Tcb,\r | |
2241 | IN UINT64 Lun,\r | |
2242 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2243 | )\r | |
6a690e23 | 2244 | {\r |
2245 | ISCSI_READY_TO_TRANSFER *R2THdr;\r | |
2246 | EFI_STATUS Status;\r | |
2247 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2248 | UINT8 *Data;\r | |
2249 | \r | |
2250 | R2THdr = (ISCSI_READY_TO_TRANSFER *) NetbufGetByte (Pdu, 0, NULL);\r | |
2251 | \r | |
2252 | R2THdr->InitiatorTaskTag = NTOHL (R2THdr->InitiatorTaskTag);\r | |
2253 | R2THdr->TargetTransferTag = NTOHL (R2THdr->TargetTransferTag);\r | |
2254 | R2THdr->StatSN = NTOHL (R2THdr->StatSN);\r | |
2255 | R2THdr->R2TSN = NTOHL (R2THdr->R2TSN);\r | |
2256 | R2THdr->BufferOffset = NTOHL (R2THdr->BufferOffset);\r | |
2257 | R2THdr->DesiredDataTransferLength = NTOHL (R2THdr->DesiredDataTransferLength);\r | |
2258 | \r | |
2259 | if ((R2THdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) || !ISCSI_SEQ_EQ (R2THdr->StatSN, Tcb->Conn->ExpStatSN)) {\r | |
2260 | return EFI_PROTOCOL_ERROR;;\r | |
2261 | }\r | |
2262 | //\r | |
2263 | // Check the sequence number.\r | |
2264 | //\r | |
2265 | Status = IScsiCheckSN (&Tcb->ExpDataSN, R2THdr->R2TSN);\r | |
2266 | if (EFI_ERROR (Status)) {\r | |
2267 | return Status;\r | |
2268 | }\r | |
2269 | \r | |
2270 | XferContext = &Tcb->XferContext;\r | |
2271 | XferContext->TargetTransferTag = R2THdr->TargetTransferTag;\r | |
2272 | XferContext->Offset = R2THdr->BufferOffset;\r | |
2273 | XferContext->DesiredLength = R2THdr->DesiredDataTransferLength;\r | |
2274 | \r | |
2275 | if (((XferContext->Offset + XferContext->DesiredLength) > Packet->OutTransferLength) ||\r | |
2276 | (XferContext->DesiredLength > Tcb->Conn->Session->MaxBurstLength)\r | |
2277 | ) {\r | |
2278 | return EFI_PROTOCOL_ERROR;\r | |
2279 | }\r | |
2280 | //\r | |
2281 | // Send the data solicited by this R2T.\r | |
2282 | //\r | |
2283 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2284 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2285 | \r | |
2286 | return Status;\r | |
2287 | }\r | |
2288 | \r | |
12618416 | 2289 | /**\r |
6a690e23 | 2290 | Process the received iSCSI SCSI Response PDU.\r |
2291 | \r | |
db3e605d | 2292 | @param[in] Pdu The Response PDU received.\r |
2293 | @param[in] Tcb The task control block.\r | |
2294 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2295 | \r |
12618416 | 2296 | @retval EFI_SUCCES The Response PDU is processed.\r |
12618416 | 2297 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
db3e605d | 2298 | @retval EFI_BAD_BUFFER_SIZEE The buffer was not the proper size for the request.\r |
963dbb30 | 2299 | @retval Others Other errors as indicated.\r |
12618416 | 2300 | **/\r |
2301 | EFI_STATUS\r | |
2302 | IScsiOnScsiRspRcvd (\r | |
2303 | IN NET_BUF *Pdu,\r | |
2304 | IN ISCSI_TCB *Tcb,\r | |
2305 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2306 | )\r | |
6a690e23 | 2307 | {\r |
2308 | SCSI_RESPONSE *ScsiRspHdr;\r | |
2309 | ISCSI_SENSE_DATA *SenseData;\r | |
2310 | EFI_STATUS Status;\r | |
2311 | UINT32 DataSegLen;\r | |
2312 | \r | |
2313 | ScsiRspHdr = (SCSI_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
2314 | \r | |
2315 | ScsiRspHdr->InitiatorTaskTag = NTOHL (ScsiRspHdr->InitiatorTaskTag);\r | |
2316 | if (ScsiRspHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2317 | return EFI_PROTOCOL_ERROR;\r | |
2318 | }\r | |
2319 | \r | |
2320 | ScsiRspHdr->StatSN = NTOHL (ScsiRspHdr->StatSN);\r | |
2321 | \r | |
2322 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, ScsiRspHdr->StatSN);\r | |
2323 | if (EFI_ERROR (Status)) {\r | |
2324 | return Status;\r | |
2325 | }\r | |
2326 | \r | |
2327 | ScsiRspHdr->MaxCmdSN = NTOHL (ScsiRspHdr->MaxCmdSN);\r | |
2328 | ScsiRspHdr->ExpCmdSN = NTOHL (ScsiRspHdr->ExpCmdSN);\r | |
2329 | IScsiUpdateCmdSN (Tcb->Conn->Session, ScsiRspHdr->MaxCmdSN, ScsiRspHdr->ExpCmdSN);\r | |
2330 | \r | |
2331 | Tcb->StatusXferd = TRUE;\r | |
2332 | \r | |
2333 | Packet->HostAdapterStatus = ScsiRspHdr->Response;\r | |
2334 | if (Packet->HostAdapterStatus != ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET) {\r | |
2335 | return EFI_SUCCESS;\r | |
2336 | }\r | |
2337 | \r | |
2338 | Packet->TargetStatus = ScsiRspHdr->Status;\r | |
2339 | \r | |
2340 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW | SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW) ||\r | |
2341 | ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW | SCSI_RSP_PDU_FLAG_UNDERFLOW)\r | |
2342 | ) {\r | |
2343 | return EFI_PROTOCOL_ERROR;\r | |
2344 | }\r | |
2345 | \r | |
2346 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW)) {\r | |
2347 | Packet->InTransferLength += NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2348 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2349 | }\r | |
2350 | \r | |
2351 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW)) {\r | |
2352 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2353 | }\r | |
2354 | \r | |
2355 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2356 | if (Packet->DataDirection == DataIn) {\r | |
2357 | Packet->InTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2358 | } else {\r | |
2359 | Packet->OutTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2360 | }\r | |
2361 | \r | |
2362 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2363 | }\r | |
2364 | \r | |
2365 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2366 | if (Packet->DataDirection == DataIn) {\r | |
2367 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2368 | } else {\r | |
2369 | Packet->OutTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2370 | }\r | |
2371 | }\r | |
2372 | \r | |
2373 | DataSegLen = ISCSI_GET_DATASEG_LEN (ScsiRspHdr);\r | |
2374 | if (DataSegLen != 0) {\r | |
2375 | SenseData = (ISCSI_SENSE_DATA *) NetbufGetByte (Pdu, sizeof (SCSI_RESPONSE), NULL);\r | |
2376 | \r | |
2377 | SenseData->Length = NTOHS (SenseData->Length);\r | |
2378 | \r | |
2379 | Packet->SenseDataLength = (UINT8) MIN (SenseData->Length, Packet->SenseDataLength);\r | |
2380 | if (Packet->SenseDataLength != 0) {\r | |
e48e37fc | 2381 | CopyMem (Packet->SenseData, &SenseData->Data[0], Packet->SenseDataLength);\r |
6a690e23 | 2382 | }\r |
2383 | } else {\r | |
2384 | Packet->SenseDataLength = 0;\r | |
2385 | }\r | |
2386 | \r | |
2387 | return Status;\r | |
2388 | }\r | |
2389 | \r | |
12618416 | 2390 | /**\r |
6a690e23 | 2391 | Process the received NOP In PDU.\r |
2392 | \r | |
db3e605d | 2393 | @param[in] Pdu The NOP In PDU received.\r |
2394 | @param[in] Tcb The task control block.\r | |
6a690e23 | 2395 | \r |
12618416 | 2396 | @retval EFI_SUCCES The NOP In PDU is processed and the related sequence\r |
2397 | numbers are updated.\r | |
12618416 | 2398 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
12618416 | 2399 | **/\r |
2400 | EFI_STATUS\r | |
2401 | IScsiOnNopInRcvd (\r | |
2402 | IN NET_BUF *Pdu,\r | |
2403 | IN ISCSI_TCB *Tcb\r | |
2404 | )\r | |
6a690e23 | 2405 | {\r |
2406 | ISCSI_NOP_IN *NopInHdr;\r | |
2407 | EFI_STATUS Status;\r | |
2408 | \r | |
2409 | NopInHdr = (ISCSI_NOP_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
2410 | \r | |
2411 | NopInHdr->StatSN = NTOHL (NopInHdr->StatSN);\r | |
2412 | NopInHdr->ExpCmdSN = NTOHL (NopInHdr->ExpCmdSN);\r | |
2413 | NopInHdr->MaxCmdSN = NTOHL (NopInHdr->MaxCmdSN);\r | |
2414 | \r | |
2415 | if (NopInHdr->InitiatorTaskTag == ISCSI_RESERVED_TAG) {\r | |
2416 | if (NopInHdr->StatSN != Tcb->Conn->ExpStatSN) {\r | |
2417 | return EFI_PROTOCOL_ERROR;\r | |
2418 | }\r | |
2419 | } else {\r | |
2420 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NopInHdr->StatSN);\r | |
2421 | if (EFI_ERROR (Status)) {\r | |
2422 | return Status;\r | |
2423 | }\r | |
2424 | }\r | |
2425 | \r | |
2426 | IScsiUpdateCmdSN (Tcb->Conn->Session, NopInHdr->MaxCmdSN, NopInHdr->ExpCmdSN);\r | |
2427 | \r | |
2428 | return EFI_SUCCESS;\r | |
2429 | }\r | |
2430 | \r | |
12618416 | 2431 | /**\r |
2432 | Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r | |
6a690e23 | 2433 | \r |
db3e605d | 2434 | @param[in] PassThru The EXT SCSI PASS THRU protocol.\r |
2435 | @param[in] Target The target ID.\r | |
2436 | @param[in] Lun The LUN.\r | |
2437 | @param[in, out] Packet The request packet containing IO request, SCSI command\r | |
2438 | buffer and buffers to read/write.\r | |
2439 | \r | |
2440 | @retval EFI_SUCCES The SCSI command is executed and the result is updated to \r | |
2441 | the Packet.\r | |
963dbb30 | 2442 | @retval EFI_DEVICE_ERROR Session state was not as required.\r |
db3e605d | 2443 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
963dbb30 | 2444 | @retval Others Other errors as indicated.\r |
12618416 | 2445 | **/\r |
2446 | EFI_STATUS\r | |
2447 | IScsiExecuteScsiCommand (\r | |
2448 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r | |
2449 | IN UINT8 *Target,\r | |
2450 | IN UINT64 Lun,\r | |
2451 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2452 | )\r | |
6a690e23 | 2453 | {\r |
2454 | EFI_STATUS Status;\r | |
2455 | ISCSI_DRIVER_DATA *Private;\r | |
2456 | ISCSI_SESSION *Session;\r | |
2457 | EFI_EVENT TimeoutEvent;\r | |
2458 | ISCSI_CONNECTION *Conn;\r | |
2459 | ISCSI_TCB *Tcb;\r | |
2460 | NET_BUF *Pdu;\r | |
2461 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2462 | UINT8 *Data;\r | |
2463 | ISCSI_IN_BUFFER_CONTEXT InBufferContext;\r | |
2464 | UINT64 Timeout;\r | |
69b0882d | 2465 | UINT8 *Buffer;\r |
6a690e23 | 2466 | \r |
2467 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (PassThru);\r | |
2468 | Session = &Private->Session;\r | |
2469 | Status = EFI_SUCCESS;\r | |
2470 | Tcb = NULL;\r | |
2471 | TimeoutEvent = NULL;\r | |
5c70cb32 | 2472 | Timeout = 0;\r |
6a690e23 | 2473 | \r |
2474 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2475 | return EFI_DEVICE_ERROR;\r | |
2476 | }\r | |
2477 | \r | |
2478 | Conn = NET_LIST_USER_STRUCT_S (\r | |
2479 | Session->Conns.ForwardLink,\r | |
2480 | ISCSI_CONNECTION,\r | |
2481 | Link,\r | |
2482 | ISCSI_CONNECTION_SIGNATURE\r | |
2483 | );\r | |
2484 | \r | |
2485 | if (Packet->Timeout != 0) {\r | |
2486 | Timeout = MultU64x32 (Packet->Timeout, 2);\r | |
6a690e23 | 2487 | }\r |
2488 | \r | |
2489 | Status = IScsiNewTcb (Conn, &Tcb);\r | |
2490 | if (EFI_ERROR (Status)) {\r | |
2491 | goto ON_EXIT;\r | |
2492 | }\r | |
2493 | //\r | |
2494 | // Encapsulate the SCSI request packet into an iSCSI SCSI Command PDU.\r | |
2495 | //\r | |
2496 | Pdu = IScsiNewScsiCmdPdu (Packet, Lun, Tcb);\r | |
2497 | if (Pdu == NULL) {\r | |
2498 | Status = EFI_OUT_OF_RESOURCES;\r | |
2499 | goto ON_EXIT;\r | |
2500 | }\r | |
2501 | \r | |
2502 | XferContext = &Tcb->XferContext;\r | |
69b0882d | 2503 | Buffer = NetbufGetByte (Pdu, 0, NULL);\r |
2504 | XferContext->Offset = ISCSI_GET_DATASEG_LEN (Buffer);\r | |
6a690e23 | 2505 | \r |
2506 | //\r | |
2507 | // Transmit the SCSI Command PDU.\r | |
2508 | //\r | |
2509 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
2510 | \r | |
2511 | NetbufFree (Pdu);\r | |
2512 | \r | |
2513 | if (EFI_ERROR (Status)) {\r | |
2514 | goto ON_EXIT;\r | |
2515 | }\r | |
2516 | \r | |
2517 | if (!Session->InitialR2T &&\r | |
2518 | (XferContext->Offset < Session->FirstBurstLength) &&\r | |
2519 | (XferContext->Offset < Packet->OutTransferLength)\r | |
2520 | ) {\r | |
2521 | //\r | |
2522 | // Unsolicited Data-Out sequence is allowed, there is remaining SCSI\r | |
2523 | // OUT data and the limit of FirstBurstLength is not reached.\r | |
2524 | //\r | |
2525 | XferContext->TargetTransferTag = ISCSI_RESERVED_TAG;\r | |
2526 | XferContext->DesiredLength = MIN (\r | |
2527 | Session->FirstBurstLength,\r | |
2528 | Packet->OutTransferLength - XferContext->Offset\r | |
2529 | );\r | |
2530 | \r | |
2531 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2532 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2533 | if (EFI_ERROR (Status)) {\r | |
2534 | goto ON_EXIT;\r | |
2535 | }\r | |
2536 | }\r | |
2537 | \r | |
2538 | InBufferContext.InData = (UINT8 *) Packet->InDataBuffer;\r | |
2539 | InBufferContext.InDataLen = Packet->InTransferLength;\r | |
2540 | \r | |
2541 | while (!Tcb->StatusXferd) {\r | |
5c70cb32 | 2542 | //\r |
2543 | // Start the timeout timer.\r | |
2544 | //\r | |
db3e605d | 2545 | if (Timeout != 0) {\r |
5c70cb32 | 2546 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, Timeout);\r |
2547 | if (EFI_ERROR (Status)) {\r | |
2548 | goto ON_EXIT;\r | |
2549 | }\r | |
2550 | TimeoutEvent = Conn->TimeoutEvent; \r | |
2551 | }\r | |
6a690e23 | 2552 | //\r |
2553 | // try to receive PDU from target.\r | |
2554 | //\r | |
2555 | Status = IScsiReceivePdu (Conn, &Pdu, &InBufferContext, FALSE, FALSE, TimeoutEvent);\r | |
2556 | if (EFI_ERROR (Status)) {\r | |
2557 | goto ON_EXIT;\r | |
2558 | }\r | |
2559 | \r | |
2560 | switch (ISCSI_GET_OPCODE (NetbufGetByte (Pdu, 0, NULL))) {\r | |
2561 | case ISCSI_OPCODE_SCSI_DATA_IN:\r | |
2562 | Status = IScsiOnDataInRcvd (Pdu, Tcb, Packet);\r | |
2563 | break;\r | |
2564 | \r | |
2565 | case ISCSI_OPCODE_R2T:\r | |
2566 | Status = IScsiOnR2TRcvd (Pdu, Tcb, Lun, Packet);\r | |
2567 | break;\r | |
2568 | \r | |
2569 | case ISCSI_OPCODE_SCSI_RSP:\r | |
2570 | Status = IScsiOnScsiRspRcvd (Pdu, Tcb, Packet);\r | |
2571 | break;\r | |
2572 | \r | |
2573 | case ISCSI_OPCODE_NOP_IN:\r | |
2574 | Status = IScsiOnNopInRcvd (Pdu, Tcb);\r | |
2575 | break;\r | |
2576 | \r | |
2577 | case ISCSI_OPCODE_VENDOR_T0:\r | |
2578 | case ISCSI_OPCODE_VENDOR_T1:\r | |
2579 | case ISCSI_OPCODE_VENDOR_T2:\r | |
2580 | //\r | |
2581 | // These messages are vendor specific, skip them.\r | |
2582 | //\r | |
2583 | break;\r | |
2584 | \r | |
2585 | default:\r | |
2586 | Status = EFI_PROTOCOL_ERROR;\r | |
2587 | break;\r | |
2588 | }\r | |
2589 | \r | |
2590 | NetbufFree (Pdu);\r | |
2591 | \r | |
2592 | if (EFI_ERROR (Status)) {\r | |
2593 | break;\r | |
2594 | }\r | |
2595 | }\r | |
2596 | \r | |
2597 | ON_EXIT:\r | |
2598 | \r | |
2599 | if (TimeoutEvent != NULL) {\r | |
2600 | gBS->SetTimer (TimeoutEvent, TimerCancel, 0);\r | |
2601 | }\r | |
2602 | \r | |
2603 | if (Tcb != NULL) {\r | |
2604 | IScsiDelTcb (Tcb);\r | |
2605 | }\r | |
2606 | \r | |
2607 | if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r | |
2608 | //\r | |
2609 | // Reinstate the session.\r | |
2610 | //\r | |
2611 | if (EFI_ERROR (IScsiSessionReinstatement (Private))) {\r | |
2612 | Status = EFI_DEVICE_ERROR;\r | |
2613 | }\r | |
2614 | }\r | |
2615 | \r | |
2616 | return Status;\r | |
2617 | }\r | |
2618 | \r | |
12618416 | 2619 | /**\r |
6a690e23 | 2620 | Reinstate the session on some error.\r |
2621 | \r | |
c5de0d55 | 2622 | @param[in, out] Private The iSCSI driver data.\r |
6a690e23 | 2623 | \r |
12618416 | 2624 | @retval EFI_SUCCES The session is reinstated from some error.\r |
db3e605d | 2625 | @retval Other Reinstatement failed.\r |
12618416 | 2626 | **/\r |
2627 | EFI_STATUS\r | |
2628 | IScsiSessionReinstatement (\r | |
c5de0d55 | 2629 | IN OUT ISCSI_DRIVER_DATA *Private\r |
12618416 | 2630 | )\r |
6a690e23 | 2631 | {\r |
2632 | ISCSI_SESSION *Session;\r | |
2633 | EFI_STATUS Status;\r | |
2634 | \r | |
2635 | Session = &Private->Session;\r | |
2636 | ASSERT (Session->State == SESSION_STATE_LOGGED_IN);\r | |
2637 | \r | |
2638 | //\r | |
2639 | // Abort the session and re-init it.\r | |
2640 | //\r | |
2641 | IScsiSessionAbort (Session);\r | |
2642 | IScsiSessionInit (Session, TRUE);\r | |
2643 | \r | |
2644 | //\r | |
2645 | // Login again.\r | |
2646 | //\r | |
2647 | Status = IScsiSessionLogin (Private);\r | |
2648 | \r | |
2649 | return Status;\r | |
2650 | }\r | |
2651 | \r | |
12618416 | 2652 | /**\r |
6a690e23 | 2653 | Initialize some session parameters before login.\r |
2654 | \r | |
963dbb30 | 2655 | @param[in, out] Session The iSCSI session.\r |
2656 | @param[in] Recovery Whether the request is from a fresh new start or recovery.\r | |
12618416 | 2657 | **/\r |
2658 | VOID\r | |
2659 | IScsiSessionInit (\r | |
963dbb30 | 2660 | IN OUT ISCSI_SESSION *Session,\r |
2661 | IN BOOLEAN Recovery\r | |
12618416 | 2662 | )\r |
6a690e23 | 2663 | {\r |
2664 | UINT32 Random;\r | |
2665 | \r | |
2666 | if (!Recovery) {\r | |
2667 | Session->Signature = ISCSI_SESSION_SIGNATURE;\r | |
2668 | Session->State = SESSION_STATE_FREE;\r | |
2669 | \r | |
2670 | Random = NET_RANDOM (NetRandomInitSeed ());\r | |
2671 | \r | |
2672 | Session->ISID[0] = ISID_BYTE_0;\r | |
2673 | Session->ISID[1] = ISID_BYTE_1;\r | |
2674 | Session->ISID[2] = ISID_BYTE_2;\r | |
2675 | Session->ISID[3] = ISID_BYTE_3;\r | |
2676 | Session->ISID[4] = (UINT8) Random;\r | |
2677 | Session->ISID[5] = (UINT8) (Random >> 8);\r | |
2678 | \r | |
e48e37fc | 2679 | InitializeListHead (&Session->Conns);\r |
2680 | InitializeListHead (&Session->TcbList);\r | |
6a690e23 | 2681 | }\r |
2682 | \r | |
2683 | Session->TSIH = 0;\r | |
2684 | \r | |
2685 | Session->CmdSN = 1;\r | |
2686 | Session->InitiatorTaskTag = 1;\r | |
2687 | Session->NextCID = 1;\r | |
2688 | \r | |
2689 | Session->TargetPortalGroupTag = 0;\r | |
2690 | Session->MaxConnections = ISCSI_MAX_CONNS_PER_SESSION;\r | |
2691 | Session->InitialR2T = FALSE;\r | |
2692 | Session->ImmediateData = TRUE;\r | |
2693 | Session->MaxBurstLength = 262144;\r | |
2694 | Session->FirstBurstLength = MAX_RECV_DATA_SEG_LEN_IN_FFP;\r | |
2695 | Session->DefaultTime2Wait = 2;\r | |
2696 | Session->DefaultTime2Retain = 20;\r | |
2697 | Session->MaxOutstandingR2T = DEFAULT_MAX_OUTSTANDING_R2T;\r | |
2698 | Session->DataPDUInOrder = TRUE;\r | |
2699 | Session->DataSequenceInOrder = TRUE;\r | |
2700 | Session->ErrorRecoveryLevel = 0;\r | |
2701 | }\r | |
2702 | \r | |
12618416 | 2703 | /**\r |
6a690e23 | 2704 | Abort the iSCSI session, that is, reset all the connection and free the\r |
2705 | resources.\r | |
2706 | \r | |
c5de0d55 | 2707 | @param[in, out] Session The iSCSI session.\r |
6a690e23 | 2708 | \r |
12618416 | 2709 | @retval EFI_SUCCES The session is aborted.\r |
12618416 | 2710 | **/\r |
2711 | EFI_STATUS\r | |
2712 | IScsiSessionAbort (\r | |
c5de0d55 | 2713 | IN OUT ISCSI_SESSION *Session\r |
12618416 | 2714 | )\r |
6a690e23 | 2715 | {\r |
2716 | ISCSI_DRIVER_DATA *Private;\r | |
2717 | ISCSI_CONNECTION *Conn;\r | |
2718 | \r | |
2719 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2720 | return EFI_SUCCESS;\r | |
2721 | }\r | |
2722 | \r | |
e48e37fc | 2723 | ASSERT (!IsListEmpty (&Session->Conns));\r |
6a690e23 | 2724 | \r |
2725 | Private = ISCSI_DRIVER_DATA_FROM_SESSION (Session);\r | |
2726 | \r | |
e48e37fc | 2727 | while (!IsListEmpty (&Session->Conns)) {\r |
6a690e23 | 2728 | Conn = NET_LIST_USER_STRUCT_S (\r |
2729 | Session->Conns.ForwardLink,\r | |
2730 | ISCSI_CONNECTION,\r | |
2731 | Link,\r | |
2732 | ISCSI_CONNECTION_SIGNATURE\r | |
2733 | );\r | |
2734 | \r | |
2735 | gBS->CloseProtocol (\r | |
2736 | Conn->Tcp4Io.Handle,\r | |
2737 | &gEfiTcp4ProtocolGuid,\r | |
2738 | Private->Image,\r | |
2739 | Private->ExtScsiPassThruHandle\r | |
2740 | );\r | |
2741 | \r | |
2742 | IScsiConnReset (Conn);\r | |
2743 | \r | |
2744 | IScsiDetatchConnection (Conn);\r | |
2745 | IScsiDestroyConnection (Conn);\r | |
2746 | }\r | |
2747 | \r | |
2748 | Session->State = SESSION_STATE_FAILED;\r | |
2749 | \r | |
2750 | return EFI_SUCCESS;\r | |
2751 | }\r |