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12618416 | 1 | /** @file\r |
2 | The implementation of IScsi protocol based on RFC3720\r | |
6a690e23 | 3 | \r |
12618416 | 4 | Copyright (c) 2004 - 2008, Intel Corporation\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 |
13 | Module Name:\r | |
14 | \r | |
15 | IScsiProto.c\r | |
16 | \r | |
17 | Abstract:\r | |
12618416 | 18 | The implementation of IScsi protocol based on RFC3720\r |
6a690e23 | 19 | \r |
12618416 | 20 | **/\r |
6a690e23 | 21 | \r |
22 | #include "IScsiImpl.h"\r | |
23 | \r | |
fe1e36e5 | 24 | UINT32 mDataSegPad = 0;\r |
6a690e23 | 25 | \r |
12618416 | 26 | /**\r |
6a690e23 | 27 | Attach the iSCSI connection to the iSCSI session. \r |
28 | \r | |
12618416 | 29 | @param Session[in] The iSCSI session.\r |
6a690e23 | 30 | \r |
12618416 | 31 | @param Conn[in] The iSCSI connection.\r |
6a690e23 | 32 | \r |
12618416 | 33 | @retval None.\r |
6a690e23 | 34 | \r |
12618416 | 35 | **/\r |
36 | VOID\r | |
37 | IScsiAttatchConnection (\r | |
38 | IN ISCSI_SESSION *Session,\r | |
39 | IN ISCSI_CONNECTION *Conn\r | |
40 | )\r | |
6a690e23 | 41 | {\r |
e48e37fc | 42 | InsertTailList (&Session->Conns, &Conn->Link);\r |
6a690e23 | 43 | Conn->Session = Session;\r |
44 | Session->NumConns++;\r | |
45 | }\r | |
46 | \r | |
12618416 | 47 | /**\r |
6a690e23 | 48 | Detach the iSCSI connection from the session it belongs to. \r |
49 | \r | |
12618416 | 50 | @param Conn[in] The iSCSI connection.\r |
6a690e23 | 51 | \r |
12618416 | 52 | @retval None.\r |
6a690e23 | 53 | \r |
12618416 | 54 | **/\r |
55 | VOID\r | |
56 | IScsiDetatchConnection (\r | |
57 | IN ISCSI_CONNECTION *Conn\r | |
58 | )\r | |
6a690e23 | 59 | {\r |
e48e37fc | 60 | RemoveEntryList (&Conn->Link);\r |
6a690e23 | 61 | Conn->Session->NumConns--;\r |
62 | Conn->Session = NULL;\r | |
63 | }\r | |
64 | \r | |
12618416 | 65 | /**\r |
6a690e23 | 66 | Check the sequence number according to RFC3720. \r |
67 | \r | |
12618416 | 68 | @param ExpSN[in] The currently expected sequence number.\r |
6a690e23 | 69 | \r |
12618416 | 70 | @param NewSN[in] The sequence number to check.\r |
6a690e23 | 71 | \r |
12618416 | 72 | @retval EFI_SUCCESS The check passed and the ExpSN is increased.\r |
6a690e23 | 73 | \r |
12618416 | 74 | **/\r |
75 | EFI_STATUS\r | |
76 | IScsiCheckSN (\r | |
77 | IN UINT32 *ExpSN,\r | |
78 | IN UINT32 NewSN\r | |
79 | )\r | |
6a690e23 | 80 | {\r |
81 | if (!ISCSI_SEQ_EQ (NewSN, *ExpSN)) {\r | |
82 | if (ISCSI_SEQ_LT (NewSN, *ExpSN)) {\r | |
83 | //\r | |
84 | // Duplicate\r | |
85 | //\r | |
86 | return EFI_NOT_READY;\r | |
87 | } else {\r | |
88 | return EFI_PROTOCOL_ERROR;\r | |
89 | }\r | |
90 | } else {\r | |
91 | //\r | |
92 | // Advance the ExpSN\r | |
93 | //\r | |
94 | (*ExpSN)++;\r | |
95 | return EFI_SUCCESS;\r | |
96 | }\r | |
97 | }\r | |
98 | \r | |
12618416 | 99 | /**\r |
6a690e23 | 100 | Update the sequence numbers for the iSCSI command.\r |
101 | \r | |
12618416 | 102 | @param Session[in] The iSCSI session.\r |
6a690e23 | 103 | \r |
12618416 | 104 | @param MaxCmdSN[in] Maximum CmdSN from the target.\r |
6a690e23 | 105 | \r |
12618416 | 106 | @param ExpCmdSN[in] Next expected CmdSN from the target.\r |
6a690e23 | 107 | \r |
12618416 | 108 | @retval None.\r |
6a690e23 | 109 | \r |
12618416 | 110 | **/\r |
111 | VOID\r | |
112 | IScsiUpdateCmdSN (\r | |
113 | IN ISCSI_SESSION *Session,\r | |
114 | IN UINT32 MaxCmdSN,\r | |
115 | IN UINT32 ExpCmdSN\r | |
116 | )\r | |
6a690e23 | 117 | {\r |
118 | if (ISCSI_SEQ_LT (MaxCmdSN, ExpCmdSN - 1)) {\r | |
119 | return ;\r | |
120 | }\r | |
121 | \r | |
122 | if (ISCSI_SEQ_GT (MaxCmdSN, Session->MaxCmdSN)) {\r | |
123 | Session->MaxCmdSN = MaxCmdSN;\r | |
124 | }\r | |
125 | \r | |
126 | if (ISCSI_SEQ_GT (ExpCmdSN, Session->ExpCmdSN)) {\r | |
127 | Session->ExpCmdSN = ExpCmdSN;\r | |
128 | }\r | |
129 | }\r | |
130 | \r | |
12618416 | 131 | /**\r |
6a690e23 | 132 | This function does the iSCSI connection login.\r |
133 | \r | |
12618416 | 134 | @param Conn[in] The iSCSI connection to login.\r |
6a690e23 | 135 | \r |
12618416 | 136 | @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r |
6a690e23 | 137 | \r |
12618416 | 138 | @retval EFI_TIMEOUT Timeout happened during the login procedure.\r |
6a690e23 | 139 | \r |
12618416 | 140 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 141 | \r |
12618416 | 142 | **/\r |
143 | EFI_STATUS\r | |
144 | IScsiConnLogin (\r | |
145 | IN ISCSI_CONNECTION *Conn\r | |
146 | )\r | |
6a690e23 | 147 | {\r |
148 | EFI_STATUS Status;\r | |
149 | \r | |
150 | //\r | |
151 | // Start the timer, wait 16 seconds to establish the TCP connection.\r | |
152 | //\r | |
153 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, 16 * TICKS_PER_SECOND);\r | |
154 | if (EFI_ERROR (Status)) {\r | |
155 | return Status;\r | |
156 | }\r | |
157 | //\r | |
158 | // try to establish the tcp connection\r | |
159 | //\r | |
160 | Status = Tcp4IoConnect (&Conn->Tcp4Io, Conn->TimeoutEvent);\r | |
161 | if (EFI_ERROR (Status)) {\r | |
162 | return Status;\r | |
163 | }\r | |
164 | \r | |
165 | gBS->SetTimer (Conn->TimeoutEvent, TimerCancel, 0);\r | |
166 | Conn->State = CONN_STATE_IN_LOGIN;\r | |
167 | \r | |
168 | //\r | |
169 | // connection is established, start the iSCSI Login\r | |
170 | //\r | |
171 | do {\r | |
172 | Status = IScsiSendLoginReq (Conn);\r | |
173 | if (EFI_ERROR (Status)) {\r | |
174 | break;\r | |
175 | }\r | |
176 | \r | |
177 | Status = IScsiReceiveLoginRsp (Conn);\r | |
178 | if (EFI_ERROR (Status)) {\r | |
179 | break;\r | |
180 | }\r | |
181 | } while (Conn->CurrentStage != ISCSI_FULL_FEATURE_PHASE);\r | |
182 | \r | |
183 | return Status;\r | |
184 | }\r | |
185 | \r | |
12618416 | 186 | /**\r |
187 | Reset the iSCSI connection.\r | |
188 | \r | |
189 | @param Conn[in] The iSCSI connection to reset.\r | |
190 | \r | |
191 | @retval None.\r | |
192 | \r | |
193 | **/\r | |
6a690e23 | 194 | VOID\r |
195 | IScsiConnReset (\r | |
196 | IN ISCSI_CONNECTION *Conn\r | |
197 | )\r | |
12618416 | 198 | {\r |
199 | Tcp4IoReset (&Conn->Tcp4Io);\r | |
200 | }\r | |
6a690e23 | 201 | \r |
12618416 | 202 | /**\r |
203 | Create a TCP connection for the iSCSI session.\r | |
6a690e23 | 204 | \r |
12618416 | 205 | @param Private[in] The iSCSI driver data.\r |
6a690e23 | 206 | \r |
12618416 | 207 | @param Session[in] Maximum CmdSN from the target.\r |
6a690e23 | 208 | \r |
12618416 | 209 | @retval The newly created iSCSI connection.\r |
6a690e23 | 210 | \r |
12618416 | 211 | **/\r |
6a690e23 | 212 | ISCSI_CONNECTION *\r |
213 | IScsiCreateConnection (\r | |
214 | IN ISCSI_DRIVER_DATA *Private,\r | |
215 | IN ISCSI_SESSION *Session\r | |
216 | )\r | |
6a690e23 | 217 | {\r |
218 | ISCSI_CONNECTION *Conn;\r | |
219 | TCP4_IO_CONFIG_DATA Tcp4IoConfig;\r | |
220 | EFI_STATUS Status;\r | |
221 | \r | |
e48e37fc | 222 | Conn = AllocatePool (sizeof (ISCSI_CONNECTION));\r |
6a690e23 | 223 | if (Conn == NULL) {\r |
224 | return NULL;\r | |
225 | }\r | |
226 | \r | |
227 | Conn->Signature = ISCSI_CONNECTION_SIGNATURE;\r | |
228 | Conn->State = CONN_STATE_FREE;\r | |
229 | Conn->CurrentStage = ISCSI_SECURITY_NEGOTIATION;\r | |
230 | Conn->NextStage = ISCSI_LOGIN_OPERATIONAL_NEGOTIATION;\r | |
231 | Conn->CHAPStep = ISCSI_CHAP_INITIAL;\r | |
232 | Conn->ExpStatSN = 0;\r | |
233 | Conn->PartialReqSent = FALSE;\r | |
234 | Conn->PartialRspRcvd = FALSE;\r | |
235 | Conn->CID = Session->NextCID++;\r | |
236 | \r | |
237 | Status = gBS->CreateEvent (\r | |
e53a6ea9 | 238 | EVT_TIMER,\r |
e48e37fc | 239 | TPL_CALLBACK,\r |
6a690e23 | 240 | NULL,\r |
241 | NULL,\r | |
242 | &Conn->TimeoutEvent\r | |
243 | );\r | |
244 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 245 | gBS->FreePool (Conn);\r |
6a690e23 | 246 | return NULL;\r |
247 | }\r | |
248 | \r | |
249 | NetbufQueInit (&Conn->RspQue);\r | |
250 | \r | |
251 | //\r | |
252 | // set the default connection-only parameters\r | |
253 | //\r | |
254 | Conn->MaxRecvDataSegmentLength = MAX_RECV_DATA_SEG_LEN_IN_FFP;\r | |
255 | Conn->HeaderDigest = ISCSI_DIGEST_NONE;\r | |
256 | Conn->DataDigest = ISCSI_DIGEST_NONE;\r | |
257 | \r | |
e48e37fc | 258 | CopyMem (&Tcp4IoConfig.LocalIp, &Session->ConfigData.NvData.LocalIp, sizeof (EFI_IPv4_ADDRESS));\r |
259 | CopyMem (&Tcp4IoConfig.SubnetMask, &Session->ConfigData.NvData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
260 | CopyMem (&Tcp4IoConfig.Gateway, &Session->ConfigData.NvData.Gateway, sizeof (EFI_IPv4_ADDRESS));\r | |
261 | CopyMem (&Tcp4IoConfig.RemoteIp, &Session->ConfigData.NvData.TargetIp, sizeof (EFI_IPv4_ADDRESS));\r | |
6a690e23 | 262 | \r |
263 | Tcp4IoConfig.RemotePort = Session->ConfigData.NvData.TargetPort;\r | |
264 | \r | |
265 | //\r | |
266 | // Create the tcp4 IO for this connection\r | |
267 | //\r | |
268 | Status = Tcp4IoCreateSocket (\r | |
269 | Private->Image,\r | |
270 | Private->Controller,\r | |
271 | &Tcp4IoConfig,\r | |
272 | &Conn->Tcp4Io\r | |
273 | );\r | |
274 | if (EFI_ERROR (Status)) {\r | |
275 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
e48e37fc | 276 | gBS->FreePool (Conn);\r |
6a690e23 | 277 | Conn = NULL;\r |
278 | }\r | |
279 | \r | |
280 | return Conn;\r | |
281 | }\r | |
282 | \r | |
12618416 | 283 | /**\r |
6a690e23 | 284 | Destroy an iSCSI connection.\r |
285 | \r | |
12618416 | 286 | @param Conn[in] The connection to destroy.\r |
6a690e23 | 287 | \r |
12618416 | 288 | @retval None.\r |
6a690e23 | 289 | \r |
12618416 | 290 | **/\r |
291 | VOID\r | |
292 | IScsiDestroyConnection (\r | |
293 | IN ISCSI_CONNECTION *Conn\r | |
294 | )\r | |
6a690e23 | 295 | {\r |
296 | Tcp4IoDestroySocket (&Conn->Tcp4Io);\r | |
297 | NetbufQueFlush (&Conn->RspQue);\r | |
298 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
e48e37fc | 299 | gBS->FreePool (Conn);\r |
6a690e23 | 300 | }\r |
301 | \r | |
12618416 | 302 | /**\r |
6a690e23 | 303 | Login the iSCSI session.\r |
304 | \r | |
12618416 | 305 | @param Private[in] The iSCSI driver data.\r |
6a690e23 | 306 | \r |
12618416 | 307 | @retval EFI_SUCCESS The iSCSI session login procedure finished.\r |
6a690e23 | 308 | \r |
12618416 | 309 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
6a690e23 | 310 | \r |
12618416 | 311 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 312 | \r |
12618416 | 313 | **/\r |
314 | EFI_STATUS\r | |
315 | IScsiSessionLogin (\r | |
316 | IN ISCSI_DRIVER_DATA *Private\r | |
317 | )\r | |
6a690e23 | 318 | {\r |
319 | EFI_STATUS Status;\r | |
320 | ISCSI_SESSION *Session;\r | |
321 | ISCSI_CONNECTION *Conn;\r | |
322 | EFI_TCP4_PROTOCOL *Tcp4;\r | |
323 | \r | |
324 | Session = &Private->Session;\r | |
325 | \r | |
326 | //\r | |
327 | // Create a connection for the session.\r | |
328 | //\r | |
329 | Conn = IScsiCreateConnection (Private, Session);\r | |
330 | if (Conn == NULL) {\r | |
331 | return EFI_OUT_OF_RESOURCES;\r | |
332 | }\r | |
333 | \r | |
334 | IScsiAttatchConnection (Session, Conn);\r | |
335 | \r | |
336 | //\r | |
337 | // Login througth the newly created connection.\r | |
338 | //\r | |
339 | Status = IScsiConnLogin (Conn);\r | |
340 | if (EFI_ERROR (Status)) {\r | |
341 | IScsiConnReset (Conn);\r | |
342 | IScsiDetatchConnection (Conn);\r | |
343 | IScsiDestroyConnection (Conn);\r | |
344 | } else {\r | |
345 | Session->State = SESSION_STATE_LOGGED_IN;\r | |
346 | \r | |
347 | gBS->OpenProtocol (\r | |
348 | Conn->Tcp4Io.Handle,\r | |
349 | &gEfiTcp4ProtocolGuid,\r | |
350 | (VOID **)&Tcp4,\r | |
351 | Private->Image,\r | |
352 | Private->ExtScsiPassThruHandle,\r | |
353 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
354 | );\r | |
355 | }\r | |
356 | \r | |
357 | return Status;\r | |
358 | }\r | |
359 | \r | |
12618416 | 360 | /**\r |
6a690e23 | 361 | Build and send the iSCSI login request to the iSCSI target according to\r |
362 | the current login stage.\r | |
363 | \r | |
12618416 | 364 | @param Conn[in] The connection in the iSCSI login phase.\r |
6a690e23 | 365 | \r |
12618416 | 366 | @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r |
367 | connection.\r | |
6a690e23 | 368 | \r |
12618416 | 369 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
6a690e23 | 370 | \r |
12618416 | 371 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 372 | \r |
12618416 | 373 | **/\r |
374 | EFI_STATUS\r | |
375 | IScsiSendLoginReq (\r | |
376 | IN ISCSI_CONNECTION *Conn\r | |
377 | )\r | |
6a690e23 | 378 | {\r |
379 | NET_BUF *Pdu;\r | |
380 | EFI_STATUS Status;\r | |
381 | \r | |
382 | //\r | |
383 | // build the Login Request PDU\r | |
384 | //\r | |
385 | Pdu = IScsiPrepareLoginReq (Conn);\r | |
386 | if (Pdu == NULL) {\r | |
387 | return EFI_DEVICE_ERROR;\r | |
388 | }\r | |
389 | //\r | |
390 | // Send it to the iSCSI target.\r | |
391 | //\r | |
392 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
393 | \r | |
394 | NetbufFree (Pdu);\r | |
395 | \r | |
396 | return Status;\r | |
397 | }\r | |
398 | \r | |
12618416 | 399 | /**\r |
6a690e23 | 400 | Receive and process the iSCSI login response.\r |
401 | \r | |
12618416 | 402 | @param Conn[in] The connection in the iSCSI login phase.\r |
6a690e23 | 403 | \r |
12618416 | 404 | @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r |
6a690e23 | 405 | \r |
12618416 | 406 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
6a690e23 | 407 | \r |
12618416 | 408 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 409 | \r |
12618416 | 410 | **/\r |
411 | EFI_STATUS\r | |
412 | IScsiReceiveLoginRsp (\r | |
413 | IN ISCSI_CONNECTION *Conn\r | |
414 | )\r | |
6a690e23 | 415 | {\r |
416 | EFI_STATUS Status;\r | |
417 | NET_BUF *Pdu;\r | |
418 | \r | |
419 | //\r | |
420 | // Receive the iSCSI login response.\r | |
421 | //\r | |
422 | Status = IScsiReceivePdu (Conn, &Pdu, NULL, FALSE, FALSE, NULL);\r | |
423 | if (EFI_ERROR (Status)) {\r | |
424 | return Status;\r | |
425 | }\r | |
426 | //\r | |
427 | // A Login Response is received, process it.\r | |
428 | //\r | |
429 | Status = IScsiProcessLoginRsp (Conn, Pdu);\r | |
430 | \r | |
431 | NetbufFree (Pdu);\r | |
432 | \r | |
433 | return Status;\r | |
434 | }\r | |
435 | \r | |
12618416 | 436 | /**\r |
6a690e23 | 437 | Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r |
438 | The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r | |
439 | updated.\r | |
440 | \r | |
12618416 | 441 | @param Pdu[in] The iSCSI PDU whose data segment the key-value pair will\r |
442 | be added to.\r | |
443 | \r | |
444 | @param Key[in] The key name string.\r | |
6a690e23 | 445 | \r |
12618416 | 446 | @param Value[in] The value string.\r |
6a690e23 | 447 | \r |
12618416 | 448 | @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r |
449 | the correspondence length fields are updated.\r | |
6a690e23 | 450 | \r |
12618416 | 451 | @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r |
452 | pair.\r | |
6a690e23 | 453 | \r |
12618416 | 454 | **/\r |
455 | EFI_STATUS\r | |
456 | IScsiAddKeyValuePair (\r | |
457 | IN NET_BUF *Pdu,\r | |
458 | IN CHAR8 *Key,\r | |
459 | IN CHAR8 *Value\r | |
460 | )\r | |
6a690e23 | 461 | {\r |
462 | UINT32 DataSegLen;\r | |
463 | UINT32 KeyLen;\r | |
464 | UINT32 ValueLen;\r | |
465 | UINT32 TotalLen;\r | |
466 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
467 | CHAR8 *Data;\r | |
468 | \r | |
469 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufGetByte (Pdu, 0, NULL);\r | |
470 | DataSegLen = NTOH24 (LoginReq->DataSegmentLength);\r | |
471 | \r | |
472 | KeyLen = (UINT32) AsciiStrLen (Key);\r | |
473 | ValueLen = (UINT32) AsciiStrLen (Value);\r | |
474 | \r | |
475 | //\r | |
476 | // 1 byte for the key value separator '=' and 1 byte for the null\r | |
477 | // delimiter after the value.\r | |
478 | //\r | |
479 | TotalLen = KeyLen + 1 + ValueLen + 1;\r | |
480 | \r | |
481 | //\r | |
482 | // Allocate the space for the key-value pair.\r | |
483 | //\r | |
69b0882d | 484 | Data = (CHAR8 *)NetbufAllocSpace (Pdu, TotalLen, NET_BUF_TAIL);\r |
6a690e23 | 485 | if (Data == NULL) {\r |
486 | return EFI_OUT_OF_RESOURCES;\r | |
487 | }\r | |
488 | //\r | |
489 | // Add the key.\r | |
490 | //\r | |
e48e37fc | 491 | CopyMem (Data, Key, KeyLen);\r |
6a690e23 | 492 | Data += KeyLen;\r |
493 | \r | |
494 | *Data = '=';\r | |
495 | Data++;\r | |
496 | \r | |
497 | //\r | |
498 | // Add the value.\r | |
499 | //\r | |
e48e37fc | 500 | CopyMem (Data, Value, ValueLen);\r |
6a690e23 | 501 | Data += ValueLen;\r |
502 | \r | |
503 | *Data = '\0';\r | |
504 | \r | |
505 | //\r | |
506 | // update the DataSegmentLength\r | |
507 | //\r | |
508 | ISCSI_SET_DATASEG_LEN (LoginReq, DataSegLen + TotalLen);\r | |
509 | \r | |
510 | return EFI_SUCCESS;\r | |
511 | }\r | |
512 | \r | |
12618416 | 513 | /**\r |
6a690e23 | 514 | Prepare the iSCSI login request to be sent according to the current login status.\r |
515 | \r | |
12618416 | 516 | @param Conn[in] The connection in the iSCSI login phase.\r |
6a690e23 | 517 | \r |
12618416 | 518 | @retval The pointer to the net buffer containing the iSCSI login request built.\r |
6a690e23 | 519 | \r |
12618416 | 520 | **/\r |
521 | NET_BUF *\r | |
522 | IScsiPrepareLoginReq (\r | |
523 | IN ISCSI_CONNECTION *Conn\r | |
524 | )\r | |
6a690e23 | 525 | {\r |
526 | ISCSI_SESSION *Session;\r | |
527 | NET_BUF *Nbuf;\r | |
528 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
529 | EFI_STATUS Status;\r | |
530 | \r | |
531 | Session = Conn->Session;\r | |
532 | \r | |
533 | Nbuf = NetbufAlloc (sizeof (ISCSI_LOGIN_REQUEST) + DEFAULT_MAX_RECV_DATA_SEG_LEN);\r | |
534 | if (Nbuf == NULL) {\r | |
535 | return NULL;\r | |
536 | }\r | |
537 | \r | |
538 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufAllocSpace (Nbuf, sizeof (ISCSI_LOGIN_REQUEST), NET_BUF_TAIL);\r | |
e48e37fc | 539 | ZeroMem (LoginReq, sizeof (ISCSI_LOGIN_REQUEST));\r |
6a690e23 | 540 | \r |
541 | //\r | |
542 | // Init the login request pdu\r | |
543 | //\r | |
544 | ISCSI_SET_OPCODE (LoginReq, ISCSI_OPCODE_LOGIN_REQ, ISCSI_REQ_IMMEDIATE);\r | |
545 | ISCSI_SET_STAGES (LoginReq, Conn->CurrentStage, Conn->NextStage);\r | |
546 | LoginReq->VersionMax = ISCSI_VERSION_MAX;\r | |
547 | LoginReq->VersionMin = ISCSI_VERSION_MIN;\r | |
548 | LoginReq->TSIH = HTONS (Session->TSIH);\r | |
549 | LoginReq->InitiatorTaskTag = HTONL (Session->InitiatorTaskTag);\r | |
550 | LoginReq->CID = HTONS (Conn->CID);\r | |
551 | LoginReq->CmdSN = HTONL (Session->CmdSN);\r | |
552 | \r | |
553 | //\r | |
554 | // For the first Login Request on a coonection this is ExpStatSN for the\r | |
555 | // old connection and this field is only valid if the Login Request restarts\r | |
556 | // a connection.\r | |
557 | // For subsequent Login Requests it is used to acknowledge the Login Responses\r | |
558 | // with their increasing StatSN values.\r | |
559 | //\r | |
560 | LoginReq->ExpStatSN = HTONL (Conn->ExpStatSN);\r | |
e48e37fc | 561 | CopyMem (LoginReq->ISID, Session->ISID, sizeof (LoginReq->ISID));\r |
6a690e23 | 562 | \r |
563 | if (Conn->PartialRspRcvd) {\r | |
564 | //\r | |
565 | // A partial response, initiator must send an empty Login Request.\r | |
566 | //\r | |
567 | return Nbuf;\r | |
568 | }\r | |
569 | \r | |
570 | switch (Conn->CurrentStage) {\r | |
571 | case ISCSI_SECURITY_NEGOTIATION:\r | |
572 | Status = IScsiCHAPToSendReq (Conn, Nbuf);\r | |
573 | break;\r | |
574 | \r | |
575 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
576 | Status = IScsiFillOpParams (Conn, Nbuf);\r | |
577 | ISCSI_SET_FLAG (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r | |
578 | break;\r | |
579 | \r | |
580 | default:\r | |
581 | //\r | |
582 | // something error happens...\r | |
583 | //\r | |
584 | Status = EFI_DEVICE_ERROR;\r | |
585 | break;\r | |
586 | }\r | |
587 | \r | |
588 | if (EFI_ERROR (Status)) {\r | |
589 | NetbufFree (Nbuf);\r | |
590 | Nbuf = NULL;\r | |
591 | } else {\r | |
592 | //\r | |
593 | // Pad the data segment if needed.\r | |
594 | //\r | |
595 | IScsiPadSegment (Nbuf, ISCSI_GET_DATASEG_LEN (LoginReq));\r | |
596 | //\r | |
597 | // Check whether we will issue the stage transition signal?\r | |
598 | //\r | |
69b0882d | 599 | Conn->TransitInitiated = (BOOLEAN) ISCSI_FLAG_ON (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r |
6a690e23 | 600 | }\r |
601 | \r | |
602 | return Nbuf;\r | |
603 | }\r | |
604 | \r | |
12618416 | 605 | /**\r |
6a690e23 | 606 | Process the iSCSI Login Response.\r |
607 | \r | |
12618416 | 608 | @param Conn[in] The connection on which the iSCSI login response is received.\r |
6a690e23 | 609 | \r |
12618416 | 610 | @param Pdu[in] The iSCSI login response PDU.\r |
6a690e23 | 611 | \r |
12618416 | 612 | @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r |
6a690e23 | 613 | \r |
12618416 | 614 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 615 | \r |
12618416 | 616 | **/\r |
617 | EFI_STATUS\r | |
618 | IScsiProcessLoginRsp (\r | |
619 | IN ISCSI_CONNECTION *Conn,\r | |
620 | IN NET_BUF *Pdu\r | |
621 | )\r | |
6a690e23 | 622 | {\r |
623 | EFI_STATUS Status;\r | |
624 | ISCSI_SESSION *Session;\r | |
625 | ISCSI_LOGIN_RESPONSE *LoginRsp;\r | |
626 | BOOLEAN Transit;\r | |
627 | BOOLEAN Continue;\r | |
628 | UINT8 CurrentStage;\r | |
629 | UINT8 NextStage;\r | |
630 | UINT8 *DataSeg;\r | |
631 | UINT32 DataSegLen;\r | |
632 | \r | |
633 | Session = Conn->Session;\r | |
634 | \r | |
635 | LoginRsp = (ISCSI_LOGIN_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
636 | if (!ISCSI_CHECK_OPCODE (LoginRsp, ISCSI_OPCODE_LOGIN_RSP)) {\r | |
637 | //\r | |
638 | // It's not a Login Response\r | |
639 | //\r | |
640 | return EFI_PROTOCOL_ERROR;\r | |
641 | }\r | |
642 | //\r | |
643 | // Get the data segment if any.\r | |
644 | //\r | |
645 | DataSegLen = ISCSI_GET_DATASEG_LEN (LoginRsp);\r | |
646 | if (DataSegLen != 0) {\r | |
647 | DataSeg = NetbufGetByte (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NULL);\r | |
648 | } else {\r | |
649 | DataSeg = NULL;\r | |
650 | }\r | |
651 | //\r | |
652 | // Check the status class in the login response PDU.\r | |
653 | //\r | |
654 | switch (LoginRsp->StatusClass) {\r | |
655 | case ISCSI_LOGIN_STATUS_SUCCESS:\r | |
656 | //\r | |
657 | // Just break here, the response and the data segment will be processed later.\r | |
658 | //\r | |
659 | break;\r | |
660 | \r | |
661 | case ISCSI_LOGIN_STATUS_REDIRECTION:\r | |
662 | //\r | |
663 | // The target may be moved to a different address\r | |
664 | //\r | |
665 | if (DataSeg == NULL) {\r | |
666 | return EFI_PROTOCOL_ERROR;\r | |
667 | }\r | |
668 | //\r | |
669 | // Process the TargetAddress key-value strings in the data segment to update the\r | |
670 | // target address info.\r | |
671 | //\r | |
69b0882d | 672 | Status = IScsiUpdateTargetAddress (Session, (CHAR8 *)DataSeg, DataSegLen);\r |
6a690e23 | 673 | if (EFI_ERROR (Status)) {\r |
674 | return Status;\r | |
675 | }\r | |
676 | //\r | |
677 | // Session will be restarted on this error status because the Target is\r | |
678 | // redirected by this Login Response.\r | |
679 | //\r | |
680 | return EFI_MEDIA_CHANGED;\r | |
681 | \r | |
682 | default:\r | |
683 | //\r | |
684 | // Initiator Error, Target Error, or any other undefined error code.\r | |
685 | //\r | |
686 | return EFI_PROTOCOL_ERROR;\r | |
687 | }\r | |
688 | //\r | |
689 | // The status is sucess, extract the wanted fields from the header segment.\r | |
690 | //\r | |
69b0882d | 691 | Transit = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT);\r |
692 | Continue = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE);\r | |
6a690e23 | 693 | \r |
69b0882d | 694 | CurrentStage = (UINT8) ISCSI_GET_CURRENT_STAGE (LoginRsp);\r |
695 | NextStage = (UINT8) ISCSI_GET_NEXT_STAGE (LoginRsp);\r | |
6a690e23 | 696 | \r |
697 | LoginRsp->InitiatorTaskTag = NTOHL (LoginRsp->InitiatorTaskTag);\r | |
698 | \r | |
699 | if ((Transit && Continue) ||\r | |
700 | (CurrentStage != Conn->CurrentStage) ||\r | |
701 | (!Conn->TransitInitiated && Transit) ||\r | |
702 | (Transit && (NextStage != Conn->NextStage)) ||\r | |
e48e37fc | 703 | (CompareMem (Session->ISID, LoginRsp->ISID, sizeof (LoginRsp->ISID)) != 0) ||\r |
6a690e23 | 704 | (LoginRsp->InitiatorTaskTag != Session->InitiatorTaskTag)\r |
705 | ) {\r | |
706 | //\r | |
707 | // A Login Response with the C bit set to 1 MUST have the T bit set to 0;\r | |
708 | // The CSG in the Login Response MUST be the same with the I-end of this connection;\r | |
709 | // The T bit can't be 1 if the last Login Response sent by the initiator doesn't\r | |
710 | // initiate the transistion;\r | |
711 | // The NSG MUST be the same with the I-end of this connection if Transit is required.\r | |
712 | // The ISID in the Login Response MUST be the same with this session.\r | |
713 | //\r | |
714 | return EFI_PROTOCOL_ERROR;\r | |
715 | }\r | |
716 | \r | |
717 | LoginRsp->StatSN = NTOHL (LoginRsp->StatSN);\r | |
718 | LoginRsp->ExpCmdSN = NTOHL (LoginRsp->ExpCmdSN);\r | |
719 | LoginRsp->MaxCmdSN = NTOHL (LoginRsp->MaxCmdSN);\r | |
720 | \r | |
721 | if ((Conn->CurrentStage == ISCSI_SECURITY_NEGOTIATION) && (Conn->CHAPStep == ISCSI_CHAP_INITIAL)) {\r | |
722 | //\r | |
723 | // It's the initial Login Response, initialize the local ExpStatSN, MaxCmdSN\r | |
724 | // and ExpCmdSN.\r | |
725 | //\r | |
726 | Conn->ExpStatSN = LoginRsp->StatSN + 1;\r | |
727 | Session->MaxCmdSN = LoginRsp->MaxCmdSN;\r | |
728 | Session->ExpCmdSN = LoginRsp->ExpCmdSN;\r | |
729 | } else {\r | |
730 | //\r | |
731 | // Check the StatSN of this PDU\r | |
732 | //\r | |
733 | Status = IScsiCheckSN (&Conn->ExpStatSN, LoginRsp->StatSN);\r | |
734 | if (!EFI_ERROR (Status)) {\r | |
735 | //\r | |
736 | // Update the MaxCmdSN and ExpCmdSN\r | |
737 | //\r | |
738 | IScsiUpdateCmdSN (Session, LoginRsp->MaxCmdSN, LoginRsp->ExpCmdSN);\r | |
739 | } else {\r | |
740 | return Status;\r | |
741 | }\r | |
742 | }\r | |
743 | //\r | |
744 | // Trim off the header segment.\r | |
745 | //\r | |
746 | NetbufTrim (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NET_BUF_HEAD);\r | |
747 | \r | |
748 | //\r | |
749 | // Queue this login response first in case it's a partial response so that\r | |
750 | // later when the full response list is received we can combine these scattered\r | |
751 | // responses' data segment and then process it.\r | |
752 | //\r | |
753 | NET_GET_REF (Pdu);\r | |
754 | NetbufQueAppend (&Conn->RspQue, Pdu);\r | |
755 | \r | |
756 | Conn->PartialRspRcvd = Continue;\r | |
757 | if (Continue) {\r | |
758 | //\r | |
759 | // It's a partial response, have to wait for another or more Request/Response\r | |
760 | // conversations to get the full response.\r | |
761 | //\r | |
762 | return EFI_SUCCESS;\r | |
763 | }\r | |
764 | \r | |
765 | switch (CurrentStage) {\r | |
766 | case ISCSI_SECURITY_NEGOTIATION:\r | |
767 | //\r | |
768 | // In security negotiation stage, let CHAP module handle it.\r | |
769 | //\r | |
770 | Status = IScsiCHAPOnRspReceived (Conn, Transit);\r | |
771 | break;\r | |
772 | \r | |
773 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
774 | //\r | |
775 | // Response received with negotiation resonse on iSCSI parameters, check them.\r | |
776 | //\r | |
777 | Status = IScsiCheckOpParams (Conn, Transit);\r | |
778 | break;\r | |
779 | \r | |
780 | default:\r | |
781 | //\r | |
782 | // Should never get here.\r | |
783 | //\r | |
784 | Status = EFI_PROTOCOL_ERROR;\r | |
785 | break;\r | |
786 | }\r | |
787 | \r | |
788 | if (Transit && (Status == EFI_SUCCESS)) {\r | |
789 | //\r | |
790 | // Do the state transition.\r | |
791 | //\r | |
792 | Conn->CurrentStage = Conn->NextStage;\r | |
793 | \r | |
794 | if (Conn->CurrentStage == ISCSI_LOGIN_OPERATIONAL_NEGOTIATION) {\r | |
795 | Conn->NextStage = ISCSI_FULL_FEATURE_PHASE;\r | |
796 | } else {\r | |
797 | //\r | |
798 | // CurrentStage is iSCSI Full Feature, it's the Login-Final Response,\r | |
799 | // get the TSIH from the Login Response.\r | |
800 | //\r | |
801 | Session->TSIH = NTOHS (LoginRsp->TSIH);\r | |
802 | }\r | |
803 | }\r | |
804 | //\r | |
805 | // Flush the response(s) received.\r | |
806 | //\r | |
807 | NetbufQueFlush (&Conn->RspQue);\r | |
808 | \r | |
809 | return Status;\r | |
810 | }\r | |
811 | \r | |
12618416 | 812 | /**\r |
6a690e23 | 813 | Updated the target information according the data received in the iSCSI\r |
814 | login response with an target redirection status.\r | |
815 | \r | |
12618416 | 816 | @param Session[in] The iSCSI session.\r |
817 | \r | |
818 | @param Data[in] The data segment which should contain the\r | |
819 | TargetAddress key-value list.\r | |
820 | \r | |
821 | @param Len[in] Length of the data.\r | |
6a690e23 | 822 | \r |
12618416 | 823 | @retval EFI_SUCCESS The target address is updated.\r |
6a690e23 | 824 | \r |
12618416 | 825 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
6a690e23 | 826 | \r |
12618416 | 827 | @retval EFI_NOT_FOUND The TargetAddress key is not found.\r |
6a690e23 | 828 | \r |
12618416 | 829 | **/\r |
830 | EFI_STATUS\r | |
831 | IScsiUpdateTargetAddress (\r | |
832 | IN ISCSI_SESSION *Session,\r | |
833 | IN CHAR8 *Data,\r | |
834 | IN UINT32 Len\r | |
835 | )\r | |
6a690e23 | 836 | {\r |
e48e37fc | 837 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 838 | CHAR8 *TargetAddress;\r |
839 | CHAR8 *IpStr;\r | |
840 | EFI_STATUS Status;\r | |
841 | UINTN Number;\r | |
842 | \r | |
843 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
844 | if (KeyValueList == NULL) {\r | |
845 | return EFI_OUT_OF_RESOURCES;\r | |
846 | }\r | |
847 | \r | |
848 | Status = EFI_NOT_FOUND;\r | |
849 | \r | |
850 | while (TRUE) {\r | |
851 | TargetAddress = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ADDRESS);\r | |
852 | if (TargetAddress == NULL) {\r | |
853 | break;\r | |
854 | }\r | |
855 | \r | |
856 | if (!NET_IS_DIGIT (TargetAddress[0])) {\r | |
857 | //\r | |
858 | // The domainname of the target may be presented in three formats: a DNS host name,\r | |
859 | // a dotted-decimal IPv4 address, or a bracketed IPv6 address. Only accept dotted\r | |
860 | // IPv4 address.\r | |
861 | //\r | |
862 | continue;\r | |
863 | }\r | |
864 | \r | |
865 | IpStr = TargetAddress;\r | |
866 | \r | |
867 | while (*TargetAddress && (*TargetAddress != ':') && (*TargetAddress != ',')) {\r | |
868 | //\r | |
869 | // NULL, ':' or ',' ends the IPv4 string.\r | |
870 | //\r | |
871 | TargetAddress++;\r | |
872 | }\r | |
873 | \r | |
874 | if (*TargetAddress == ',') {\r | |
875 | //\r | |
876 | // Comma and the portal group tag MUST be ommitted if the TargetAddress is sent\r | |
877 | // as the result of a redirection.\r | |
878 | //\r | |
879 | continue;\r | |
880 | } else if (*TargetAddress == ':') {\r | |
881 | *TargetAddress = '\0';\r | |
882 | \r | |
883 | TargetAddress++;\r | |
884 | \r | |
885 | Number = AsciiStrDecimalToUintn (TargetAddress);\r | |
886 | if (Number > 0xFFFF) {\r | |
887 | continue;\r | |
888 | } else {\r | |
889 | Session->ConfigData.NvData.TargetPort = (UINT16) Number;\r | |
890 | }\r | |
891 | } else {\r | |
892 | //\r | |
893 | // The string only contains the IPv4 address. Use the well known port.\r | |
894 | //\r | |
895 | Session->ConfigData.NvData.TargetPort = ISCSI_WELL_KNOWN_PORT;\r | |
896 | }\r | |
897 | //\r | |
898 | // Update the target IP address.\r | |
899 | //\r | |
900 | Status = IScsiAsciiStrToIp (IpStr, &Session->ConfigData.NvData.TargetIp);\r | |
901 | if (EFI_ERROR (Status)) {\r | |
902 | continue;\r | |
903 | } else {\r | |
904 | break;\r | |
905 | }\r | |
906 | }\r | |
907 | \r | |
908 | IScsiFreeKeyValueList (KeyValueList);\r | |
909 | \r | |
910 | return Status;\r | |
911 | }\r | |
912 | \r | |
12618416 | 913 | /**\r |
6a690e23 | 914 | The callback function to free the net buffer list.\r |
915 | \r | |
12618416 | 916 | @param Arg[in] The opaque parameter.\r |
6a690e23 | 917 | \r |
12618416 | 918 | @retval None.\r |
6a690e23 | 919 | \r |
12618416 | 920 | **/\r |
921 | VOID\r | |
922 | IScsiFreeNbufList (\r | |
923 | VOID *Arg\r | |
924 | )\r | |
6a690e23 | 925 | {\r |
926 | ASSERT (Arg != NULL);\r | |
927 | \r | |
e48e37fc | 928 | NetbufFreeList ((LIST_ENTRY *) Arg);\r |
929 | gBS->FreePool (Arg);\r | |
6a690e23 | 930 | }\r |
931 | \r | |
12618416 | 932 | /**\r |
933 | The callback function called in NetBufFree, it does nothing.\r | |
934 | \r | |
935 | @param Arg[in] The opaque parameter.\r | |
936 | \r | |
937 | @retval None.\r | |
938 | \r | |
939 | **/\r | |
6a690e23 | 940 | VOID\r |
941 | IScsiNbufExtFree (\r | |
942 | VOID *Arg\r | |
943 | )\r | |
12618416 | 944 | {\r |
945 | }\r | |
6a690e23 | 946 | \r |
12618416 | 947 | /**\r |
948 | Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r | |
949 | an optional data segment. The two parts will be put into two blocks of buffers in the\r | |
950 | net buffer. The digest check will be conducted in this function if needed and the digests\r | |
951 | will be trimmed from the PDU buffer.\r | |
6a690e23 | 952 | \r |
12618416 | 953 | @param Conn[in] The iSCSI connection to receive data from.\r |
6a690e23 | 954 | \r |
12618416 | 955 | @param Pdu[out] The received iSCSI pdu.\r |
6a690e23 | 956 | \r |
12618416 | 957 | @param Context[in] The context used to describe information on the caller provided\r |
958 | buffer to receive data segment of the iSCSI pdu, it's optional.\r | |
6a690e23 | 959 | \r |
12618416 | 960 | @param HeaderDigest[in] Whether there will be header digest received.\r |
6a690e23 | 961 | \r |
12618416 | 962 | @param DataDigest[in] Whether there will be data digest.\r |
6a690e23 | 963 | \r |
12618416 | 964 | @param TimeoutEvent[in] The timeout event, it's optional.\r |
965 | \r | |
966 | @retval EFI_SUCCESS An iSCSI pdu is received.\r | |
6a690e23 | 967 | \r |
12618416 | 968 | @retval EFI_TIMEOUT Timeout happenend.\r |
969 | \r | |
970 | **/\r | |
6a690e23 | 971 | EFI_STATUS\r |
972 | IScsiReceivePdu (\r | |
973 | IN ISCSI_CONNECTION *Conn,\r | |
974 | OUT NET_BUF **Pdu,\r | |
975 | IN ISCSI_IN_BUFFER_CONTEXT *Context, OPTIONAL\r | |
976 | IN BOOLEAN HeaderDigest,\r | |
977 | IN BOOLEAN DataDigest,\r | |
978 | IN EFI_EVENT TimeoutEvent OPTIONAL\r | |
979 | )\r | |
6a690e23 | 980 | {\r |
e48e37fc | 981 | LIST_ENTRY *NbufList;\r |
6a690e23 | 982 | UINT32 Len;\r |
983 | NET_BUF *PduHdr;\r | |
984 | UINT8 *Header;\r | |
985 | EFI_STATUS Status;\r | |
986 | UINT32 PadLen;\r | |
987 | UINT32 InDataOffset;\r | |
988 | NET_FRAGMENT Fragment[2];\r | |
989 | UINT32 FragmentCount;\r | |
990 | NET_BUF *DataSeg;\r | |
991 | UINT32 PadAndCRC32[2];\r | |
992 | \r | |
e48e37fc | 993 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 994 | if (NbufList == NULL) {\r |
995 | return EFI_OUT_OF_RESOURCES;\r | |
996 | }\r | |
997 | \r | |
e48e37fc | 998 | InitializeListHead (NbufList);\r |
6a690e23 | 999 | \r |
1000 | //\r | |
1001 | // The header digest will be received together with the PDU header if exists.\r | |
1002 | //\r | |
1003 | Len = sizeof (ISCSI_BASIC_HEADER) + (HeaderDigest ? sizeof (UINT32) : 0);\r | |
1004 | PduHdr = NetbufAlloc (Len);\r | |
1005 | if (PduHdr == NULL) {\r | |
1006 | Status = EFI_OUT_OF_RESOURCES;\r | |
1007 | goto ON_EXIT;\r | |
1008 | }\r | |
1009 | \r | |
1010 | Header = NetbufAllocSpace (PduHdr, Len, NET_BUF_TAIL);\r | |
e48e37fc | 1011 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 1012 | \r |
1013 | //\r | |
1014 | // First step, receive the BHS of the PDU.\r | |
1015 | //\r | |
1016 | Status = Tcp4IoReceive (&Conn->Tcp4Io, PduHdr, FALSE, TimeoutEvent);\r | |
1017 | if (EFI_ERROR (Status)) {\r | |
1018 | goto ON_EXIT;\r | |
1019 | }\r | |
1020 | \r | |
1021 | if (HeaderDigest) {\r | |
1022 | //\r | |
1023 | // TODO: check the header-digest.\r | |
1024 | //\r | |
1025 | //\r | |
1026 | // Trim off the digest.\r | |
1027 | //\r | |
1028 | NetbufTrim (PduHdr, sizeof (UINT32), NET_BUF_TAIL);\r | |
1029 | }\r | |
1030 | \r | |
1031 | Len = ISCSI_GET_DATASEG_LEN (Header);\r | |
1032 | if (Len == 0) {\r | |
1033 | //\r | |
1034 | // No data segment.\r | |
1035 | //\r | |
1036 | goto FORM_PDU;\r | |
1037 | }\r | |
1038 | //\r | |
1039 | // Get the length of the padding bytes of the data segment.\r | |
1040 | //\r | |
1041 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1042 | \r | |
1043 | switch (ISCSI_GET_OPCODE (Header)) {\r | |
1044 | case ISCSI_OPCODE_SCSI_DATA_IN:\r | |
1045 | //\r | |
1046 | // Try to use the buffer described by Context if the PDU is an\r | |
1047 | // iSCSI SCSI data in pdu so as to reduce memory copy overhead.\r | |
1048 | //\r | |
1049 | InDataOffset = ISCSI_GET_BUFFER_OFFSET (Header);\r | |
1050 | if ((Context == NULL) || ((InDataOffset + Len) > Context->InDataLen)) {\r | |
1051 | Status = EFI_PROTOCOL_ERROR;\r | |
1052 | goto ON_EXIT;\r | |
1053 | }\r | |
1054 | \r | |
1055 | Fragment[0].Len = Len;\r | |
1056 | Fragment[0].Bulk = Context->InData + InDataOffset;\r | |
1057 | \r | |
1058 | if (DataDigest || (PadLen != 0)) {\r | |
1059 | //\r | |
1060 | // The data segment is padded, use two fragments to receive it.\r | |
1061 | // The first to receive the useful data. The second to receive the padding.\r | |
1062 | //\r | |
1063 | Fragment[1].Len = PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
1064 | Fragment[1].Bulk = (UINT8 *) ((UINTN) &PadAndCRC32[1] - PadLen);\r | |
1065 | \r | |
1066 | FragmentCount = 2;\r | |
1067 | } else {\r | |
1068 | FragmentCount = 1;\r | |
1069 | }\r | |
1070 | \r | |
1071 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1072 | if (DataSeg == NULL) {\r | |
1073 | Status = EFI_OUT_OF_RESOURCES;\r | |
1074 | goto ON_EXIT;\r | |
1075 | }\r | |
1076 | \r | |
1077 | break;\r | |
1078 | \r | |
1079 | case ISCSI_OPCODE_SCSI_RSP:\r | |
1080 | case ISCSI_OPCODE_NOP_IN:\r | |
1081 | case ISCSI_OPCODE_LOGIN_RSP:\r | |
1082 | case ISCSI_OPCODE_TEXT_RSP:\r | |
1083 | case ISCSI_OPCODE_ASYNC_MSG:\r | |
1084 | case ISCSI_OPCODE_REJECT:\r | |
1085 | case ISCSI_OPCODE_VENDOR_T0:\r | |
1086 | case ISCSI_OPCODE_VENDOR_T1:\r | |
1087 | case ISCSI_OPCODE_VENDOR_T2:\r | |
1088 | //\r | |
1089 | // Allocate buffer to receive the data segment.\r | |
1090 | //\r | |
1091 | Len += PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
1092 | DataSeg = NetbufAlloc (Len);\r | |
1093 | if (DataSeg == NULL) {\r | |
1094 | Status = EFI_OUT_OF_RESOURCES;\r | |
1095 | goto ON_EXIT;\r | |
1096 | }\r | |
1097 | \r | |
1098 | NetbufAllocSpace (DataSeg, Len, NET_BUF_TAIL);\r | |
1099 | break;\r | |
1100 | \r | |
1101 | default:\r | |
1102 | Status = EFI_PROTOCOL_ERROR;\r | |
1103 | goto ON_EXIT;\r | |
1104 | }\r | |
1105 | \r | |
e48e37fc | 1106 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 1107 | \r |
1108 | //\r | |
1109 | // Receive the data segment with the data digest if any.\r | |
1110 | //\r | |
1111 | Status = Tcp4IoReceive (&Conn->Tcp4Io, DataSeg, FALSE, TimeoutEvent);\r | |
1112 | if (EFI_ERROR (Status)) {\r | |
1113 | goto ON_EXIT;\r | |
1114 | }\r | |
1115 | \r | |
1116 | if (DataDigest) {\r | |
1117 | //\r | |
1118 | // TODO: Check the data digest.\r | |
1119 | //\r | |
1120 | NetbufTrim (DataSeg, sizeof (UINT32), NET_BUF_TAIL);\r | |
1121 | }\r | |
1122 | \r | |
1123 | if (PadLen != 0) {\r | |
1124 | //\r | |
1125 | // Trim off the padding bytes in the data segment.\r | |
1126 | //\r | |
1127 | NetbufTrim (DataSeg, PadLen, NET_BUF_TAIL);\r | |
1128 | }\r | |
1129 | \r | |
1130 | FORM_PDU:\r | |
1131 | //\r | |
1132 | // Form the pdu from a list of pdu segments.\r | |
1133 | //\r | |
1134 | *Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1135 | if (*Pdu == NULL) {\r | |
1136 | Status = EFI_OUT_OF_RESOURCES;\r | |
1137 | }\r | |
1138 | \r | |
1139 | ON_EXIT:\r | |
1140 | \r | |
1141 | if (EFI_ERROR (Status)) {\r | |
1142 | //\r | |
1143 | // Free the Nbufs in this NbufList and the NbufList itself.\r | |
1144 | //\r | |
1145 | IScsiFreeNbufList (NbufList);\r | |
1146 | }\r | |
1147 | \r | |
1148 | return Status;\r | |
1149 | }\r | |
1150 | \r | |
12618416 | 1151 | /**\r |
6a690e23 | 1152 | Check and get the result of the prameter negotiation.\r |
1153 | \r | |
12618416 | 1154 | @param Conn[in] The connection in iSCSI login.\r |
6a690e23 | 1155 | \r |
12618416 | 1156 | @param Pdu[in] The iSCSI response PDU containing the parameter list.\r |
6a690e23 | 1157 | \r |
12618416 | 1158 | @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.\r |
6a690e23 | 1159 | \r |
12618416 | 1160 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
6a690e23 | 1161 | \r |
12618416 | 1162 | **/\r |
1163 | EFI_STATUS\r | |
1164 | IScsiCheckOpParams (\r | |
1165 | IN ISCSI_CONNECTION *Conn,\r | |
1166 | IN BOOLEAN Transit\r | |
1167 | )\r | |
6a690e23 | 1168 | {\r |
1169 | EFI_STATUS Status;\r | |
e48e37fc | 1170 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 1171 | CHAR8 *Data;\r |
1172 | UINT32 Len;\r | |
1173 | ISCSI_SESSION *Session;\r | |
1174 | CHAR8 *Value;\r | |
1175 | UINTN NumericValue;\r | |
1176 | \r | |
1177 | ASSERT (Conn->RspQue.BufNum != 0);\r | |
1178 | \r | |
1179 | Session = Conn->Session;\r | |
1180 | \r | |
1181 | Len = Conn->RspQue.BufSize;\r | |
e48e37fc | 1182 | Data = AllocatePool (Len);\r |
6a690e23 | 1183 | if (Data == NULL) {\r |
1184 | return EFI_OUT_OF_RESOURCES;\r | |
1185 | }\r | |
1186 | \r | |
69b0882d | 1187 | NetbufQueCopy (&Conn->RspQue, 0, Len, (UINT8 *) Data);\r |
6a690e23 | 1188 | \r |
1189 | Status = EFI_PROTOCOL_ERROR;\r | |
1190 | \r | |
1191 | //\r | |
1192 | // Extract the Key-Value pairs into a list.\r | |
1193 | //\r | |
1194 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
1195 | if (KeyValueList == NULL) {\r | |
e48e37fc | 1196 | gBS->FreePool (Data);\r |
6a690e23 | 1197 | return Status;\r |
1198 | }\r | |
1199 | //\r | |
1200 | // HeaderDigest\r | |
1201 | //\r | |
1202 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_HEADER_DIGEST);\r | |
1203 | if (Value == NULL) {\r | |
1204 | goto ON_ERROR;\r | |
1205 | }\r | |
1206 | \r | |
1207 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
1208 | if (Conn->HeaderDigest != ISCSI_DIGEST_CRC32) {\r | |
1209 | goto ON_ERROR;\r | |
1210 | }\r | |
1211 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
1212 | Conn->HeaderDigest = ISCSI_DIGEST_NONE;\r | |
1213 | } else {\r | |
1214 | goto ON_ERROR;\r | |
1215 | }\r | |
1216 | //\r | |
1217 | // DataDigest\r | |
1218 | //\r | |
1219 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_DIGEST);\r | |
1220 | if (Value == NULL) {\r | |
1221 | goto ON_ERROR;\r | |
1222 | }\r | |
1223 | \r | |
1224 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
1225 | if (Conn->DataDigest != ISCSI_DIGEST_CRC32) {\r | |
1226 | goto ON_ERROR;\r | |
1227 | }\r | |
1228 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
1229 | Conn->DataDigest = ISCSI_DIGEST_NONE;\r | |
1230 | } else {\r | |
1231 | goto ON_ERROR;\r | |
1232 | }\r | |
1233 | //\r | |
1234 | // ErrorRecoveryLevel, result fuction is Minimum.\r | |
1235 | //\r | |
1236 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_ERROR_RECOVERY_LEVEL);\r | |
1237 | if (Value == NULL) {\r | |
1238 | goto ON_ERROR;\r | |
1239 | }\r | |
1240 | \r | |
1241 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1242 | if (NumericValue > 2) {\r | |
1243 | goto ON_ERROR;\r | |
1244 | }\r | |
1245 | \r | |
1246 | Session->ErrorRecoveryLevel = (UINT8) MIN (Session->ErrorRecoveryLevel, NumericValue);\r | |
1247 | \r | |
1248 | //\r | |
1249 | // InitialR2T, result function is OR.\r | |
1250 | //\r | |
1251 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_INITIAL_R2T);\r | |
1252 | if (Value == NULL) {\r | |
1253 | goto ON_ERROR;\r | |
1254 | }\r | |
1255 | \r | |
69b0882d | 1256 | Session->InitialR2T = (BOOLEAN) (Session->InitialR2T || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1257 | \r |
1258 | //\r | |
1259 | // ImmediateData, result function is AND.\r | |
1260 | //\r | |
1261 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_IMMEDIATE_DATA);\r | |
1262 | if (Value == NULL) {\r | |
1263 | goto ON_ERROR;\r | |
1264 | }\r | |
1265 | \r | |
69b0882d | 1266 | Session->ImmediateData = (BOOLEAN) (Session->ImmediateData && (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1267 | \r |
1268 | //\r | |
1269 | // MaxRecvDataSegmentLength, result function is Mininum.\r | |
1270 | //\r | |
1271 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH);\r | |
1272 | if (Value != NULL) {\r | |
1273 | //\r | |
1274 | // MaxRecvDataSegmentLength is declarative.\r | |
1275 | //\r | |
1276 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1277 | \r | |
1278 | Conn->MaxRecvDataSegmentLength = (UINT32) MIN (Conn->MaxRecvDataSegmentLength, NumericValue);\r | |
1279 | }\r | |
1280 | //\r | |
1281 | // MaxBurstLength, result funtion is Mininum.\r | |
1282 | //\r | |
1283 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_BURST_LENGTH);\r | |
1284 | if (Value == NULL) {\r | |
1285 | goto ON_ERROR;\r | |
1286 | }\r | |
1287 | \r | |
1288 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1289 | Session->MaxBurstLength = (UINT32) MIN (Session->MaxBurstLength, NumericValue);\r | |
1290 | \r | |
1291 | //\r | |
1292 | // FirstBurstLength, result function is Minimum. Irrelevant when InitialR2T=Yes and\r | |
1293 | // ImmediateData=No.\r | |
1294 | //\r | |
1295 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_FIRST_BURST_LENGTH);\r | |
1296 | if ((Value == NULL) && !(Session->InitialR2T && !Session->ImmediateData)) {\r | |
1297 | goto ON_ERROR;\r | |
1298 | }\r | |
1299 | \r | |
1300 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1301 | Session->FirstBurstLength = (UINT32) MIN (Session->FirstBurstLength, NumericValue);\r | |
1302 | \r | |
1303 | //\r | |
1304 | // MaxConnections, result function is Minimum.\r | |
1305 | //\r | |
1306 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_CONNECTIONS);\r | |
1307 | if (Value == NULL) {\r | |
1308 | goto ON_ERROR;\r | |
1309 | }\r | |
1310 | \r | |
1311 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1312 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1313 | goto ON_ERROR;\r | |
1314 | }\r | |
1315 | \r | |
1316 | Session->MaxConnections = (UINT32) MIN (Session->MaxConnections, NumericValue);\r | |
1317 | \r | |
1318 | //\r | |
1319 | // DataPDUInOrder, result function is OR.\r | |
1320 | //\r | |
1321 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_PDU_IN_ORDER);\r | |
1322 | if (Value == NULL) {\r | |
1323 | goto ON_ERROR;\r | |
1324 | }\r | |
1325 | \r | |
69b0882d | 1326 | Session->DataPDUInOrder = (BOOLEAN) (Session->DataPDUInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1327 | \r |
1328 | //\r | |
1329 | // DataSequenceInorder, result function is OR.\r | |
1330 | //\r | |
1331 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER);\r | |
1332 | if (Value == NULL) {\r | |
1333 | goto ON_ERROR;\r | |
1334 | }\r | |
1335 | \r | |
69b0882d | 1336 | Session->DataSequenceInOrder = (BOOLEAN) (Session->DataSequenceInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1337 | \r |
1338 | //\r | |
1339 | // DefaultTime2Wait, result function is Maximum.\r | |
1340 | //\r | |
1341 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2WAIT);\r | |
1342 | if (Value == NULL) {\r | |
1343 | goto ON_ERROR;\r | |
1344 | }\r | |
1345 | \r | |
1346 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1347 | if (NumericValue == 0) {\r | |
1348 | Session->DefaultTime2Wait = 0;\r | |
1349 | } else if (NumericValue > 3600) {\r | |
1350 | goto ON_ERROR;\r | |
1351 | } else {\r | |
1352 | Session->DefaultTime2Wait = (UINT32) MAX (Session->DefaultTime2Wait, NumericValue);\r | |
1353 | }\r | |
1354 | //\r | |
1355 | // DefaultTime2Retain, result function is Minimum.\r | |
1356 | //\r | |
1357 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2RETAIN);\r | |
1358 | if (Value == NULL) {\r | |
1359 | goto ON_ERROR;\r | |
1360 | }\r | |
1361 | \r | |
1362 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1363 | if (NumericValue == 0) {\r | |
1364 | Session->DefaultTime2Retain = 0;\r | |
1365 | } else if (NumericValue > 3600) {\r | |
1366 | goto ON_ERROR;\r | |
1367 | } else {\r | |
1368 | Session->DefaultTime2Retain = (UINT32) MIN (Session->DefaultTime2Retain, NumericValue);\r | |
1369 | }\r | |
1370 | //\r | |
1371 | // MaxOutstandingR2T, result function is Minimum.\r | |
1372 | //\r | |
1373 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_OUTSTANDING_R2T);\r | |
1374 | if (Value == NULL) {\r | |
1375 | goto ON_ERROR;\r | |
1376 | }\r | |
1377 | \r | |
1378 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1379 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1380 | goto ON_ERROR;\r | |
1381 | }\r | |
1382 | \r | |
1383 | Session->MaxOutstandingR2T = (UINT16) MIN (Session->MaxOutstandingR2T, NumericValue);\r | |
1384 | \r | |
1385 | //\r | |
1386 | // Remove declarative key-value paris if any.\r | |
1387 | //\r | |
1388 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_SESSION_TYPE);\r | |
1389 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ALIAS);\r | |
1390 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_PORTAL_GROUP_TAG);\r | |
1391 | \r | |
e48e37fc | 1392 | if (IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1393 | //\r |
1394 | // Succeed if no more keys in the list.\r | |
1395 | //\r | |
1396 | Status = EFI_SUCCESS;\r | |
1397 | }\r | |
1398 | \r | |
1399 | ON_ERROR:\r | |
1400 | \r | |
1401 | IScsiFreeKeyValueList (KeyValueList);\r | |
1402 | \r | |
e48e37fc | 1403 | gBS->FreePool (Data);\r |
6a690e23 | 1404 | \r |
1405 | return Status;\r | |
1406 | }\r | |
1407 | \r | |
12618416 | 1408 | /**\r |
6a690e23 | 1409 | Fill the oprational prameters.\r |
1410 | \r | |
12618416 | 1411 | @param Conn[in] The connection in iSCSI login.\r |
6a690e23 | 1412 | \r |
12618416 | 1413 | @param Pdu[in] The iSCSI login request PDU to fill the parameters.\r |
6a690e23 | 1414 | \r |
12618416 | 1415 | @retval EFI_SUCCESS The parmeters are filled into the iSCSI login request PDU.\r |
6a690e23 | 1416 | \r |
12618416 | 1417 | @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to hold the parameters.\r |
6a690e23 | 1418 | \r |
12618416 | 1419 | **/\r |
1420 | EFI_STATUS\r | |
1421 | IScsiFillOpParams (\r | |
1422 | IN ISCSI_CONNECTION *Conn,\r | |
1423 | IN NET_BUF *Pdu\r | |
1424 | )\r | |
6a690e23 | 1425 | {\r |
1426 | ISCSI_SESSION *Session;\r | |
1427 | CHAR8 Value[256];\r | |
1428 | \r | |
1429 | Session = Conn->Session;\r | |
1430 | \r | |
1431 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->HeaderDigest == ISCSI_DIGEST_CRC32) ? "None,CRC32" : "None");\r | |
1432 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_HEADER_DIGEST, Value);\r | |
1433 | \r | |
1434 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->DataDigest == ISCSI_DIGEST_CRC32) ? "None,CRC32" : "None");\r | |
1435 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_DIGEST, Value);\r | |
1436 | \r | |
1437 | AsciiSPrint (Value, sizeof (Value), "%d", Session->ErrorRecoveryLevel);\r | |
1438 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_ERROR_RECOVERY_LEVEL, Value);\r | |
1439 | \r | |
1440 | AsciiSPrint (Value, sizeof (Value), "%a", Session->InitialR2T ? "Yes" : "No");\r | |
1441 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_INITIAL_R2T, Value);\r | |
1442 | \r | |
1443 | AsciiSPrint (Value, sizeof (Value), "%a", Session->ImmediateData ? "Yes" : "No");\r | |
1444 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_IMMEDIATE_DATA, Value);\r | |
1445 | \r | |
1446 | AsciiSPrint (Value, sizeof (Value), "%d", Conn->MaxRecvDataSegmentLength);\r | |
1447 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH, Value);\r | |
1448 | \r | |
1449 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxBurstLength);\r | |
1450 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_BURST_LENGTH, Value);\r | |
1451 | \r | |
1452 | AsciiSPrint (Value, sizeof (Value), "%d", Session->FirstBurstLength);\r | |
1453 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_FIRST_BURST_LENGTH, Value);\r | |
1454 | \r | |
1455 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxConnections);\r | |
1456 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_CONNECTIONS, Value);\r | |
1457 | \r | |
1458 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataPDUInOrder ? "Yes" : "No");\r | |
1459 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_PDU_IN_ORDER, Value);\r | |
1460 | \r | |
1461 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataSequenceInOrder ? "Yes" : "No");\r | |
1462 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER, Value);\r | |
1463 | \r | |
1464 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Wait);\r | |
1465 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2WAIT, Value);\r | |
1466 | \r | |
1467 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Retain);\r | |
1468 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2RETAIN, Value);\r | |
1469 | \r | |
1470 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxOutstandingR2T);\r | |
1471 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_OUTSTANDING_R2T, Value);\r | |
1472 | \r | |
1473 | return EFI_SUCCESS;\r | |
1474 | }\r | |
1475 | \r | |
12618416 | 1476 | /**\r |
6a690e23 | 1477 | Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r |
1478 | \r | |
12618416 | 1479 | @param Pdu[in] The iSCSI pdu which contains segments to pad.\r |
6a690e23 | 1480 | \r |
12618416 | 1481 | @param Len[in] The length of the last semgnet in the PDU.\r |
6a690e23 | 1482 | \r |
12618416 | 1483 | @retval EFI_SUCCESS The segment is padded or no need to pad it.\r |
6a690e23 | 1484 | \r |
12618416 | 1485 | @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r |
1486 | padding bytes.\r | |
6a690e23 | 1487 | \r |
12618416 | 1488 | **/\r |
1489 | EFI_STATUS\r | |
1490 | IScsiPadSegment (\r | |
1491 | IN NET_BUF *Pdu,\r | |
1492 | IN UINT32 Len\r | |
1493 | )\r | |
6a690e23 | 1494 | {\r |
1495 | UINT32 PadLen;\r | |
1496 | UINT8 *Data;\r | |
1497 | \r | |
1498 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1499 | \r | |
1500 | if (PadLen != 0) {\r | |
1501 | Data = NetbufAllocSpace (Pdu, PadLen, NET_BUF_TAIL);\r | |
1502 | if (Data == NULL) {\r | |
1503 | return EFI_OUT_OF_RESOURCES;\r | |
1504 | }\r | |
1505 | \r | |
e48e37fc | 1506 | ZeroMem (Data, PadLen);\r |
6a690e23 | 1507 | }\r |
1508 | \r | |
1509 | return EFI_SUCCESS;\r | |
1510 | }\r | |
1511 | \r | |
12618416 | 1512 | /**\r |
6a690e23 | 1513 | Build a key-value list from the data segment.\r |
1514 | \r | |
12618416 | 1515 | @param Data[in] The data segment containing the key-value pairs.\r |
6a690e23 | 1516 | \r |
12618416 | 1517 | @param Len[in] Length of the data segment.\r |
6a690e23 | 1518 | \r |
12618416 | 1519 | @retval The key-value list.\r |
6a690e23 | 1520 | \r |
12618416 | 1521 | **/\r |
1522 | LIST_ENTRY *\r | |
1523 | IScsiBuildKeyValueList (\r | |
1524 | IN CHAR8 *Data,\r | |
1525 | IN UINT32 Len\r | |
1526 | )\r | |
6a690e23 | 1527 | {\r |
e48e37fc | 1528 | LIST_ENTRY *ListHead;\r |
6a690e23 | 1529 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1530 | \r | |
e48e37fc | 1531 | ListHead = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 1532 | if (ListHead == NULL) {\r |
1533 | return NULL;\r | |
1534 | }\r | |
1535 | \r | |
e48e37fc | 1536 | InitializeListHead (ListHead);\r |
6a690e23 | 1537 | \r |
1538 | while (Len > 0) {\r | |
e48e37fc | 1539 | KeyValuePair = AllocatePool (sizeof (ISCSI_KEY_VALUE_PAIR));\r |
6a690e23 | 1540 | if (KeyValuePair == NULL) {\r |
1541 | goto ON_ERROR;\r | |
1542 | }\r | |
1543 | \r | |
e48e37fc | 1544 | InitializeListHead (&KeyValuePair->List);\r |
6a690e23 | 1545 | \r |
1546 | KeyValuePair->Key = Data;\r | |
1547 | \r | |
1548 | while ((Len > 0) && (*Data != '=')) {\r | |
1549 | Len--;\r | |
1550 | Data++;\r | |
1551 | }\r | |
1552 | \r | |
1553 | if (*Data == '=') {\r | |
1554 | *Data = '\0';\r | |
1555 | \r | |
1556 | Data++;\r | |
1557 | Len--;\r | |
1558 | } else {\r | |
e48e37fc | 1559 | gBS->FreePool (KeyValuePair);\r |
6a690e23 | 1560 | goto ON_ERROR;\r |
1561 | }\r | |
1562 | \r | |
1563 | KeyValuePair->Value = Data;\r | |
1564 | \r | |
e48e37fc | 1565 | InsertTailList (ListHead, &KeyValuePair->List);;\r |
6a690e23 | 1566 | \r |
1567 | Data += AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1568 | Len -= (UINT32) AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1569 | }\r | |
1570 | \r | |
1571 | return ListHead;\r | |
1572 | \r | |
1573 | ON_ERROR:\r | |
1574 | \r | |
1575 | IScsiFreeKeyValueList (ListHead);\r | |
1576 | \r | |
1577 | return NULL;\r | |
1578 | }\r | |
1579 | \r | |
12618416 | 1580 | /**\r |
6a690e23 | 1581 | Get the value string by the key name from the key-value list. If found,\r |
1582 | the key-value entry will be removed from the list.\r | |
1583 | \r | |
12618416 | 1584 | @param KeyValueList[in] The key-value list.\r |
6a690e23 | 1585 | \r |
12618416 | 1586 | @param Key[in] The key name to find.\r |
6a690e23 | 1587 | \r |
12618416 | 1588 | @retval The value string.\r |
6a690e23 | 1589 | \r |
12618416 | 1590 | **/\r |
1591 | CHAR8 *\r | |
1592 | IScsiGetValueByKeyFromList (\r | |
1593 | IN LIST_ENTRY *KeyValueList,\r | |
1594 | IN CHAR8 *Key\r | |
1595 | )\r | |
6a690e23 | 1596 | {\r |
e48e37fc | 1597 | LIST_ENTRY *Entry;\r |
6a690e23 | 1598 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1599 | CHAR8 *Value;\r | |
1600 | \r | |
1601 | Value = NULL;\r | |
1602 | \r | |
1603 | NET_LIST_FOR_EACH (Entry, KeyValueList) {\r | |
1604 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1605 | \r | |
1606 | if (AsciiStrCmp (KeyValuePair->Key, Key) == 0) {\r | |
1607 | Value = KeyValuePair->Value;\r | |
1608 | \r | |
e48e37fc | 1609 | RemoveEntryList (&KeyValuePair->List);\r |
1610 | gBS->FreePool (KeyValuePair);\r | |
6a690e23 | 1611 | break;\r |
1612 | }\r | |
1613 | }\r | |
1614 | \r | |
1615 | return Value;\r | |
1616 | }\r | |
1617 | \r | |
12618416 | 1618 | /**\r |
1619 | Free the key-value list.\r | |
1620 | \r | |
1621 | @param KeyValueList[in] The key-value list.\r | |
1622 | \r | |
1623 | @retval None.\r | |
1624 | \r | |
1625 | **/\r | |
6a690e23 | 1626 | VOID\r |
1627 | IScsiFreeKeyValueList (\r | |
e48e37fc | 1628 | IN LIST_ENTRY *KeyValueList\r |
6a690e23 | 1629 | )\r |
6a690e23 | 1630 | {\r |
e48e37fc | 1631 | LIST_ENTRY *Entry;\r |
6a690e23 | 1632 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1633 | \r | |
e48e37fc | 1634 | while (!IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1635 | Entry = NetListRemoveHead (KeyValueList);\r |
1636 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1637 | \r | |
e48e37fc | 1638 | gBS->FreePool (KeyValuePair);\r |
6a690e23 | 1639 | }\r |
1640 | \r | |
e48e37fc | 1641 | gBS->FreePool (KeyValueList);\r |
6a690e23 | 1642 | }\r |
1643 | \r | |
12618416 | 1644 | /**\r |
6a690e23 | 1645 | Normalize the iSCSI name according to RFC.\r |
1646 | \r | |
12618416 | 1647 | @param Name[in] The iSCSI name.\r |
6a690e23 | 1648 | \r |
12618416 | 1649 | @param Len[in] length of the iSCSI name.\r |
6a690e23 | 1650 | \r |
12618416 | 1651 | @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r |
6a690e23 | 1652 | \r |
12618416 | 1653 | @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r |
6a690e23 | 1654 | \r |
12618416 | 1655 | **/\r |
1656 | EFI_STATUS\r | |
1657 | IScsiNormalizeName (\r | |
1658 | IN CHAR8 *Name,\r | |
1659 | IN UINTN Len\r | |
1660 | )\r | |
6a690e23 | 1661 | {\r |
1662 | UINTN Index;\r | |
1663 | \r | |
1664 | for (Index = 0; Index < Len; Index++) {\r | |
1665 | if (NET_IS_UPPER_CASE_CHAR (Name[Index])) {\r | |
1666 | //\r | |
1667 | // Convert the upper-case characters to lower-case ones\r | |
1668 | //\r | |
69b0882d | 1669 | Name[Index] = (CHAR8) (Name[Index] - 'A' + 'a');\r |
6a690e23 | 1670 | }\r |
1671 | \r | |
1672 | if (!NET_IS_LOWER_CASE_CHAR (Name[Index]) &&\r | |
1673 | !NET_IS_DIGIT (Name[Index]) &&\r | |
1674 | (Name[Index] != '-') &&\r | |
1675 | (Name[Index] != '.') &&\r | |
1676 | (Name[Index] != ':')\r | |
1677 | ) {\r | |
1678 | //\r | |
1679 | // ASCII dash, dot, colon lower-case characters and digit characters\r | |
1680 | // are allowed.\r | |
1681 | //\r | |
1682 | return EFI_PROTOCOL_ERROR;\r | |
1683 | }\r | |
1684 | }\r | |
1685 | \r | |
e48e37fc | 1686 | if ((Len < 4) || (CompareMem (Name, "iqn.", 4) != 0)) {\r |
6a690e23 | 1687 | //\r |
1688 | // Only IQN format is accepted now.\r | |
1689 | //\r | |
1690 | return EFI_PROTOCOL_ERROR;\r | |
1691 | }\r | |
1692 | \r | |
1693 | return EFI_SUCCESS;\r | |
1694 | }\r | |
1695 | \r | |
12618416 | 1696 | /**\r |
6a690e23 | 1697 | Create an iSCSI task control block.\r |
1698 | \r | |
12618416 | 1699 | @param Conn[in] The connection on which the task control block will be created.\r |
6a690e23 | 1700 | \r |
12618416 | 1701 | @param Tcb[out] The newly created task control block.\r |
6a690e23 | 1702 | \r |
12618416 | 1703 | @retval EFI_SUCCESS The task control block is created.\r |
6a690e23 | 1704 | \r |
12618416 | 1705 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
6a690e23 | 1706 | \r |
12618416 | 1707 | **/\r |
1708 | EFI_STATUS\r | |
1709 | IScsiNewTcb (\r | |
1710 | IN ISCSI_CONNECTION *Conn,\r | |
1711 | OUT ISCSI_TCB **Tcb\r | |
1712 | )\r | |
6a690e23 | 1713 | {\r |
1714 | ISCSI_SESSION *Session;\r | |
1715 | ISCSI_TCB *NewTcb;\r | |
1716 | \r | |
1717 | ASSERT (Tcb != NULL);\r | |
1718 | \r | |
1719 | Session = Conn->Session;\r | |
1720 | \r | |
1721 | if (ISCSI_SEQ_GT (Session->CmdSN, Session->MaxCmdSN)) {\r | |
1722 | return EFI_NOT_READY;\r | |
1723 | }\r | |
1724 | \r | |
e48e37fc | 1725 | NewTcb = AllocateZeroPool (sizeof (ISCSI_TCB));\r |
6a690e23 | 1726 | if (NewTcb == NULL) {\r |
1727 | return EFI_OUT_OF_RESOURCES;\r | |
1728 | }\r | |
1729 | \r | |
e48e37fc | 1730 | InitializeListHead (&NewTcb->Link);\r |
6a690e23 | 1731 | \r |
1732 | NewTcb->SoFarInOrder = TRUE;\r | |
1733 | NewTcb->InitiatorTaskTag = Session->InitiatorTaskTag;\r | |
1734 | NewTcb->CmdSN = Session->CmdSN;\r | |
1735 | NewTcb->Conn = Conn;\r | |
1736 | \r | |
e48e37fc | 1737 | InsertTailList (&Session->TcbList, &NewTcb->Link);\r |
6a690e23 | 1738 | \r |
1739 | //\r | |
1740 | // Advance the initiator task tag.\r | |
1741 | //\r | |
1742 | Session->InitiatorTaskTag++;\r | |
1743 | Session->CmdSN++;\r | |
1744 | \r | |
1745 | *Tcb = NewTcb;\r | |
1746 | \r | |
1747 | return EFI_SUCCESS;\r | |
1748 | }\r | |
1749 | \r | |
12618416 | 1750 | /**\r |
6a690e23 | 1751 | Delete the tcb from the connection and destroy it.\r |
1752 | \r | |
12618416 | 1753 | @param Tcb The tcb to delete.\r |
6a690e23 | 1754 | \r |
12618416 | 1755 | @retval None.\r |
6a690e23 | 1756 | \r |
12618416 | 1757 | **/\r |
1758 | VOID\r | |
1759 | IScsiDelTcb (\r | |
1760 | IN ISCSI_TCB *Tcb\r | |
1761 | )\r | |
6a690e23 | 1762 | {\r |
e48e37fc | 1763 | RemoveEntryList (&Tcb->Link);\r |
6a690e23 | 1764 | \r |
e48e37fc | 1765 | gBS->FreePool (Tcb);\r |
6a690e23 | 1766 | }\r |
1767 | \r | |
12618416 | 1768 | /**\r |
6a690e23 | 1769 | Find the task control block by the initator task tag.\r |
1770 | \r | |
12618416 | 1771 | @param TcbList[in] The tcb list.\r |
6a690e23 | 1772 | \r |
12618416 | 1773 | @param InitiatorTaskTag[in] The initiator task tag.\r |
6a690e23 | 1774 | \r |
12618416 | 1775 | @retval The task control block found.\r |
6a690e23 | 1776 | \r |
12618416 | 1777 | **/\r |
1778 | ISCSI_TCB *\r | |
1779 | IScsiFindTcbByITT (\r | |
1780 | IN LIST_ENTRY *TcbList,\r | |
1781 | IN UINT32 InitiatorTaskTag\r | |
1782 | )\r | |
6a690e23 | 1783 | {\r |
1784 | ISCSI_TCB *Tcb;\r | |
e48e37fc | 1785 | LIST_ENTRY *Entry;\r |
6a690e23 | 1786 | \r |
1787 | Tcb = NULL;\r | |
1788 | \r | |
1789 | NET_LIST_FOR_EACH (Entry, TcbList) {\r | |
1790 | Tcb = NET_LIST_USER_STRUCT (Entry, ISCSI_TCB, Link);\r | |
1791 | \r | |
1792 | if (Tcb->InitiatorTaskTag == InitiatorTaskTag) {\r | |
1793 | break;\r | |
1794 | }\r | |
1795 | \r | |
1796 | Tcb = NULL;\r | |
1797 | }\r | |
1798 | \r | |
1799 | return Tcb;\r | |
1800 | }\r | |
1801 | \r | |
12618416 | 1802 | /**\r |
6a690e23 | 1803 | Create a data segment, pad it and calculate the CRC if needed.\r |
1804 | \r | |
12618416 | 1805 | @param Data[in] The data to fill into the data segment.\r |
6a690e23 | 1806 | \r |
12618416 | 1807 | @param Len[in] Length of the data.\r |
6a690e23 | 1808 | \r |
12618416 | 1809 | @param DataDigest[in] Whether to calculate CRC for this data segment.\r |
6a690e23 | 1810 | \r |
12618416 | 1811 | @retval The net buffer wrapping the data segment.\r |
6a690e23 | 1812 | \r |
12618416 | 1813 | **/\r |
1814 | NET_BUF *\r | |
1815 | IScsiNewDataSegment (\r | |
1816 | IN UINT8 *Data,\r | |
1817 | IN UINT32 Len,\r | |
1818 | IN BOOLEAN DataDigest\r | |
1819 | )\r | |
6a690e23 | 1820 | {\r |
1821 | NET_FRAGMENT Fragment[2];\r | |
1822 | UINT32 FragmentCount;\r | |
1823 | UINT32 PadLen;\r | |
1824 | NET_BUF *DataSeg;\r | |
1825 | \r | |
1826 | Fragment[0].Len = Len;\r | |
1827 | Fragment[0].Bulk = Data;\r | |
1828 | \r | |
1829 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1830 | if (PadLen != 0) {\r | |
1831 | Fragment[1].Len = PadLen;\r | |
1832 | Fragment[1].Bulk = (UINT8 *) &mDataSegPad;\r | |
1833 | \r | |
1834 | FragmentCount = 2;\r | |
1835 | } else {\r | |
1836 | FragmentCount = 1;\r | |
1837 | }\r | |
1838 | \r | |
1839 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1840 | \r | |
1841 | return DataSeg;\r | |
1842 | }\r | |
1843 | \r | |
12618416 | 1844 | /**\r |
6a690e23 | 1845 | Create a iSCSI SCSI command PDU to encapsulate the command issued\r |
1846 | by SCSI through the EXT SCSI PASS THRU Protocol.\r | |
1847 | \r | |
12618416 | 1848 | @param Packet[in] The EXT SCSI PASS THRU request packet containing the SCSI command.\r |
6a690e23 | 1849 | \r |
12618416 | 1850 | @param Lun[in] The LUN.\r |
6a690e23 | 1851 | \r |
12618416 | 1852 | @param Tcb[in] The tcb assocated with this SCSI command.\r |
6a690e23 | 1853 | \r |
12618416 | 1854 | @retval The created iSCSI SCSI command PDU.\r |
6a690e23 | 1855 | \r |
12618416 | 1856 | **/\r |
1857 | NET_BUF *\r | |
1858 | IScsiNewScsiCmdPdu (\r | |
1859 | IN EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r | |
1860 | IN UINT64 Lun,\r | |
1861 | IN ISCSI_TCB *Tcb\r | |
1862 | )\r | |
6a690e23 | 1863 | {\r |
e48e37fc | 1864 | LIST_ENTRY *NbufList;\r |
6a690e23 | 1865 | NET_BUF *Pdu;\r |
1866 | NET_BUF *PduHeader;\r | |
1867 | NET_BUF *DataSeg;\r | |
1868 | SCSI_COMMAND *ScsiCmd;\r | |
1869 | UINT8 AHSLength;\r | |
1870 | UINT32 Length;\r | |
1871 | ISCSI_ADDITIONAL_HEADER *Header;\r | |
1872 | ISCSI_BI_EXP_READ_DATA_LEN_AHS *BiExpReadDataLenAHS;\r | |
1873 | ISCSI_SESSION *Session;\r | |
1874 | UINT32 ImmediateDataLen;\r | |
1875 | \r | |
1876 | AHSLength = 0;\r | |
1877 | \r | |
1878 | if (Packet->DataDirection == DataBi) {\r | |
1879 | //\r | |
1880 | // Bi directional Read/Write command, the bidirectional expected\r | |
1881 | // read data length AHS is required.\r | |
1882 | //\r | |
1883 | AHSLength += sizeof (ISCSI_BI_EXP_READ_DATA_LEN_AHS);\r | |
1884 | }\r | |
1885 | \r | |
1886 | if (Packet->CdbLength > 16) {\r | |
1887 | //\r | |
1888 | // The CDB exceeds 16 bytes, an extended CDB AHS is required.\r | |
1889 | //\r | |
69b0882d | 1890 | AHSLength = (UINT8) (AHSLength + (ISCSI_ROUNDUP (Packet->CdbLength - 16) + sizeof (ISCSI_ADDITIONAL_HEADER)));\r |
6a690e23 | 1891 | }\r |
1892 | \r | |
1893 | Length = sizeof (SCSI_COMMAND) + AHSLength;\r | |
1894 | PduHeader = NetbufAlloc (Length);\r | |
1895 | if (PduHeader == NULL) {\r | |
1896 | return NULL;\r | |
1897 | }\r | |
1898 | \r | |
1899 | ScsiCmd = (SCSI_COMMAND *) NetbufAllocSpace (PduHeader, Length, NET_BUF_TAIL);\r | |
1900 | Header = (ISCSI_ADDITIONAL_HEADER *) (ScsiCmd + 1);\r | |
1901 | \r | |
e48e37fc | 1902 | ZeroMem (ScsiCmd, Length);\r |
6a690e23 | 1903 | \r |
1904 | ISCSI_SET_OPCODE (ScsiCmd, ISCSI_OPCODE_SCSI_CMD, 0);\r | |
1905 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_TASK_ATTR_SIMPLE);\r | |
1906 | \r | |
1907 | //\r | |
1908 | // Set the READ/WRITE flags according to the IO type of this request.\r | |
1909 | //\r | |
1910 | switch (Packet->DataDirection) {\r | |
1911 | case DataIn:\r | |
1912 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ);\r | |
1913 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->InTransferLength);\r | |
1914 | break;\r | |
1915 | \r | |
1916 | case DataOut:\r | |
1917 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_WRITE);\r | |
1918 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1919 | break;\r | |
1920 | \r | |
1921 | case DataBi:\r | |
1922 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ | SCSI_CMD_PDU_FLAG_WRITE);\r | |
1923 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1924 | \r | |
1925 | //\r | |
1926 | // Fill the bidirectional expected read data length AHS.\r | |
1927 | //\r | |
1928 | BiExpReadDataLenAHS = (ISCSI_BI_EXP_READ_DATA_LEN_AHS *) Header;\r | |
1929 | Header = (ISCSI_ADDITIONAL_HEADER *) (BiExpReadDataLenAHS + 1);\r | |
1930 | \r | |
1931 | BiExpReadDataLenAHS->Length = NTOHS (5);\r | |
1932 | BiExpReadDataLenAHS->Type = ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN;\r | |
1933 | BiExpReadDataLenAHS->ExpReadDataLength = NTOHL (Packet->InTransferLength);\r | |
1934 | \r | |
1935 | break;\r | |
1936 | }\r | |
1937 | \r | |
1938 | ScsiCmd->TotalAHSLength = AHSLength;\r | |
e48e37fc | 1939 | CopyMem (ScsiCmd->Lun, &Lun, sizeof (ScsiCmd->Lun));\r |
6a690e23 | 1940 | ScsiCmd->InitiatorTaskTag = NTOHL (Tcb->InitiatorTaskTag);\r |
1941 | ScsiCmd->CmdSN = NTOHL (Tcb->CmdSN);\r | |
1942 | ScsiCmd->ExpStatSN = NTOHL (Tcb->Conn->ExpStatSN);\r | |
1943 | \r | |
e48e37fc | 1944 | CopyMem (ScsiCmd->CDB, Packet->Cdb, sizeof (ScsiCmd->CDB));\r |
6a690e23 | 1945 | \r |
1946 | if (Packet->CdbLength > 16) {\r | |
1947 | Header->Length = NTOHS (Packet->CdbLength - 15);\r | |
1948 | Header->Type = ISCSI_AHS_TYPE_EXT_CDB;\r | |
1949 | \r | |
e48e37fc | 1950 | CopyMem (Header + 1, (UINT8 *) Packet->Cdb + 16, Packet->CdbLength - 16);\r |
6a690e23 | 1951 | }\r |
1952 | \r | |
1953 | Pdu = PduHeader;\r | |
1954 | Session = Tcb->Conn->Session;\r | |
1955 | ImmediateDataLen = 0;\r | |
1956 | \r | |
1957 | if (Session->ImmediateData && (Packet->OutTransferLength != 0)) {\r | |
1958 | //\r | |
1959 | // Send immediate data in this SCSI Command PDU. The length of the immeidate\r | |
1960 | // data is the minimum of FirstBurstLength, the data length to be xfered and\r | |
1961 | // the MaxRecvdataSegmentLength on this connection.\r | |
1962 | //\r | |
1963 | ImmediateDataLen = MIN (Session->FirstBurstLength, Packet->OutTransferLength);\r | |
1964 | ImmediateDataLen = MIN (ImmediateDataLen, Tcb->Conn->MaxRecvDataSegmentLength);\r | |
1965 | \r | |
1966 | //\r | |
1967 | // Update the data segment length in the PDU header.\r | |
1968 | //\r | |
1969 | ISCSI_SET_DATASEG_LEN (ScsiCmd, ImmediateDataLen);\r | |
1970 | \r | |
1971 | //\r | |
1972 | // Create the data segment.\r | |
1973 | //\r | |
1974 | DataSeg = IScsiNewDataSegment ((UINT8 *) Packet->OutDataBuffer, ImmediateDataLen, FALSE);\r | |
1975 | if (DataSeg == NULL) {\r | |
1976 | NetbufFree (PduHeader);\r | |
1977 | Pdu = NULL;\r | |
1978 | goto ON_EXIT;\r | |
1979 | }\r | |
1980 | \r | |
e48e37fc | 1981 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 1982 | if (NbufList == NULL) {\r |
1983 | NetbufFree (PduHeader);\r | |
1984 | NetbufFree (DataSeg);\r | |
1985 | \r | |
1986 | Pdu = NULL;\r | |
1987 | goto ON_EXIT;\r | |
1988 | }\r | |
1989 | \r | |
e48e37fc | 1990 | InitializeListHead (NbufList);\r |
1991 | InsertTailList (NbufList, &PduHeader->List);\r | |
1992 | InsertTailList (NbufList, &DataSeg->List);\r | |
6a690e23 | 1993 | \r |
1994 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1995 | if (Pdu == NULL) {\r | |
1996 | IScsiFreeNbufList (NbufList);\r | |
1997 | }\r | |
1998 | }\r | |
1999 | \r | |
2000 | if (Session->InitialR2T ||\r | |
2001 | (ImmediateDataLen == Session->FirstBurstLength) ||\r | |
2002 | (ImmediateDataLen == Packet->OutTransferLength)\r | |
2003 | ) {\r | |
2004 | //\r | |
2005 | // Unsolicited data out sequence is not allowed,\r | |
2006 | // or FirstBustLength data is already sent out by immediate data\r | |
2007 | // or all the OUT data accompany this SCSI packet is sent as\r | |
2008 | // immediate data, the final flag should be set on this SCSI Command\r | |
2009 | // PDU.\r | |
2010 | //\r | |
2011 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_BHS_FLAG_FINAL);\r | |
2012 | }\r | |
2013 | \r | |
2014 | ON_EXIT:\r | |
2015 | \r | |
2016 | return Pdu;\r | |
2017 | }\r | |
2018 | \r | |
12618416 | 2019 | /**\r |
2020 | Create a new iSCSI SCSI Data Out PDU.\r | |
2021 | \r | |
2022 | @param Data[in] The data to put into the Data Out PDU.\r | |
2023 | \r | |
2024 | @param Len[in] Length of the data.\r | |
2025 | \r | |
2026 | @param DataSN[in] The DataSN of the Data Out PDU.\r | |
2027 | \r | |
2028 | @param Tcb[in] The task control block of this Data Out PDU.\r | |
2029 | \r | |
2030 | @param Lun[in] The LUN.\r | |
2031 | \r | |
2032 | @retval The net buffer wrapping the Data Out PDU.\r | |
2033 | \r | |
2034 | **/\r | |
6a690e23 | 2035 | NET_BUF *\r |
2036 | IScsiNewDataOutPdu (\r | |
2037 | IN UINT8 *Data,\r | |
2038 | IN UINT32 Len,\r | |
2039 | IN UINT32 DataSN,\r | |
2040 | IN ISCSI_TCB *Tcb,\r | |
2041 | IN UINT64 Lun\r | |
2042 | )\r | |
6a690e23 | 2043 | {\r |
e48e37fc | 2044 | LIST_ENTRY *NbufList;\r |
6a690e23 | 2045 | NET_BUF *PduHdr;\r |
2046 | NET_BUF *DataSeg;\r | |
2047 | NET_BUF *Pdu;\r | |
2048 | ISCSI_SCSI_DATA_OUT *DataOutHdr;\r | |
2049 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2050 | \r | |
e48e37fc | 2051 | NbufList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 2052 | if (NbufList == NULL) {\r |
2053 | return NULL;\r | |
2054 | }\r | |
2055 | \r | |
e48e37fc | 2056 | InitializeListHead (NbufList);\r |
6a690e23 | 2057 | \r |
2058 | //\r | |
2059 | // Allocate memory for the BHS.\r | |
2060 | //\r | |
2061 | PduHdr = NetbufAlloc (sizeof (ISCSI_SCSI_DATA_OUT));\r | |
2062 | if (PduHdr == NULL) {\r | |
e48e37fc | 2063 | gBS->FreePool (NbufList);\r |
6a690e23 | 2064 | return NULL;\r |
2065 | }\r | |
2066 | //\r | |
2067 | // Insert the BHS into the buffer list.\r | |
2068 | //\r | |
e48e37fc | 2069 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 2070 | \r |
2071 | DataOutHdr = (ISCSI_SCSI_DATA_OUT *) NetbufAllocSpace (PduHdr, sizeof (ISCSI_SCSI_DATA_OUT), NET_BUF_TAIL);\r | |
2072 | XferContext = &Tcb->XferContext;\r | |
2073 | \r | |
e48e37fc | 2074 | ZeroMem (DataOutHdr, sizeof (ISCSI_SCSI_DATA_OUT));\r |
6a690e23 | 2075 | \r |
2076 | //\r | |
2077 | // Set the flags and fields of the Data Out PDU BHS.\r | |
2078 | //\r | |
2079 | ISCSI_SET_OPCODE (DataOutHdr, ISCSI_OPCODE_SCSI_DATA_OUT, 0);\r | |
2080 | ISCSI_SET_DATASEG_LEN (DataOutHdr, Len);\r | |
2081 | \r | |
2082 | DataOutHdr->InitiatorTaskTag = HTONL (Tcb->InitiatorTaskTag);\r | |
2083 | DataOutHdr->TargetTransferTag = HTONL (XferContext->TargetTransferTag);\r | |
2084 | DataOutHdr->ExpStatSN = HTONL (Tcb->Conn->ExpStatSN);\r | |
2085 | DataOutHdr->DataSN = HTONL (DataSN);\r | |
2086 | DataOutHdr->BufferOffset = HTONL (XferContext->Offset);\r | |
2087 | \r | |
2088 | if (XferContext->TargetTransferTag != ISCSI_RESERVED_TAG) {\r | |
e48e37fc | 2089 | CopyMem (&DataOutHdr->Lun, &Lun, sizeof (DataOutHdr->Lun));\r |
6a690e23 | 2090 | }\r |
2091 | //\r | |
2092 | // Build the data segment for this Data Out PDU.\r | |
2093 | //\r | |
2094 | DataSeg = IScsiNewDataSegment (Data, Len, FALSE);\r | |
2095 | if (DataSeg == NULL) {\r | |
2096 | IScsiFreeNbufList (NbufList);\r | |
2097 | return NULL;\r | |
2098 | }\r | |
2099 | //\r | |
2100 | // Put the data segment into the buffer list and combine it with the BHS\r | |
2101 | // into a full Data Out PDU.\r | |
2102 | //\r | |
e48e37fc | 2103 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 2104 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r |
2105 | if (Pdu == NULL) {\r | |
2106 | IScsiFreeNbufList (NbufList);\r | |
2107 | }\r | |
2108 | \r | |
2109 | return Pdu;\r | |
2110 | }\r | |
2111 | \r | |
12618416 | 2112 | /**\r |
6a690e23 | 2113 | Generate a consecutive sequence of iSCSI SCSI Data Out PDUs.\r |
2114 | \r | |
12618416 | 2115 | @param Data[in] The data which will be carried by the sequence of iSCSI SCSI Data Out PDUs.\r |
6a690e23 | 2116 | \r |
12618416 | 2117 | @param Tcb[in] The task control block of the data to send out.\r |
6a690e23 | 2118 | \r |
12618416 | 2119 | @param Lun[in] The LUN the data will be sent to.\r |
6a690e23 | 2120 | \r |
12618416 | 2121 | @retval A list of net buffers with each of them wraps an iSCSI SCSI Data Out PDU.\r |
6a690e23 | 2122 | \r |
12618416 | 2123 | **/\r |
2124 | LIST_ENTRY *\r | |
2125 | IScsiGenerateDataOutPduSequence (\r | |
2126 | IN UINT8 *Data,\r | |
2127 | IN ISCSI_TCB *Tcb,\r | |
2128 | IN UINT64 Lun\r | |
2129 | )\r | |
6a690e23 | 2130 | {\r |
e48e37fc | 2131 | LIST_ENTRY *PduList;\r |
6a690e23 | 2132 | UINT32 DataSN;\r |
2133 | UINT32 DataLen;\r | |
2134 | NET_BUF *DataOutPdu;\r | |
2135 | ISCSI_CONNECTION *Conn;\r | |
2136 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2137 | \r | |
e48e37fc | 2138 | PduList = AllocatePool (sizeof (LIST_ENTRY ));\r |
6a690e23 | 2139 | if (PduList == NULL) {\r |
2140 | return NULL;\r | |
2141 | }\r | |
2142 | \r | |
e48e37fc | 2143 | InitializeListHead (PduList);\r |
6a690e23 | 2144 | \r |
2145 | DataSN = 0;\r | |
2146 | Conn = Tcb->Conn;\r | |
2147 | DataOutPdu = NULL;\r | |
2148 | XferContext = &Tcb->XferContext;\r | |
2149 | \r | |
2150 | while (XferContext->DesiredLength > 0) {\r | |
2151 | //\r | |
2152 | // Determine the length of data this Data Out PDU can carry.\r | |
2153 | //\r | |
2154 | DataLen = MIN (XferContext->DesiredLength, Conn->MaxRecvDataSegmentLength);\r | |
6a690e23 | 2155 | \r |
2156 | //\r | |
2157 | // Create a Data Out PDU.\r | |
2158 | //\r | |
2159 | DataOutPdu = IScsiNewDataOutPdu (Data, DataLen, DataSN, Tcb, Lun);\r | |
2160 | if (DataOutPdu == NULL) {\r | |
2161 | IScsiFreeNbufList (PduList);\r | |
2162 | PduList = NULL;\r | |
2163 | \r | |
2164 | goto ON_EXIT;\r | |
2165 | }\r | |
2166 | \r | |
e48e37fc | 2167 | InsertTailList (PduList, &DataOutPdu->List);\r |
6a690e23 | 2168 | \r |
2169 | //\r | |
2170 | // Update the context and DataSN.\r | |
2171 | //\r | |
2172 | XferContext->Offset += DataLen;\r | |
2173 | XferContext->DesiredLength -= DataLen;\r | |
2174 | DataSN++;\r | |
e92d66f2 | 2175 | Data += DataLen;\r |
6a690e23 | 2176 | }\r |
2177 | //\r | |
2178 | // Set the F bit for the last data out PDU in this sequence.\r | |
2179 | //\r | |
2180 | ISCSI_SET_FLAG (NetbufGetByte (DataOutPdu, 0, NULL), ISCSI_BHS_FLAG_FINAL);\r | |
2181 | \r | |
2182 | ON_EXIT:\r | |
2183 | \r | |
2184 | return PduList;\r | |
2185 | }\r | |
2186 | \r | |
12618416 | 2187 | /**\r |
6a690e23 | 2188 | Send the Data in a sequence of Data Out PDUs one by one.\r |
2189 | \r | |
12618416 | 2190 | @param Data[in] The data to carry by Data Out PDUs.\r |
6a690e23 | 2191 | \r |
12618416 | 2192 | @param Lun[in] The LUN the data will be sent to.\r |
6a690e23 | 2193 | \r |
12618416 | 2194 | @param Tcb[in] The task control block.\r |
6a690e23 | 2195 | \r |
12618416 | 2196 | @retval EFI_SUCCES The data is sent out to the LUN.\r |
6a690e23 | 2197 | \r |
12618416 | 2198 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
2199 | \r | |
2200 | **/\r | |
2201 | EFI_STATUS\r | |
2202 | IScsiSendDataOutPduSequence (\r | |
2203 | IN UINT8 *Data,\r | |
2204 | IN UINT64 Lun,\r | |
2205 | IN ISCSI_TCB *Tcb\r | |
2206 | )\r | |
6a690e23 | 2207 | {\r |
e48e37fc | 2208 | LIST_ENTRY *DataOutPduList;\r |
2209 | LIST_ENTRY *Entry;\r | |
6a690e23 | 2210 | NET_BUF *Pdu;\r |
2211 | EFI_STATUS Status;\r | |
2212 | \r | |
2213 | //\r | |
2214 | // Generate the Data Out PDU sequence.\r | |
2215 | //\r | |
2216 | DataOutPduList = IScsiGenerateDataOutPduSequence (Data, Tcb, Lun);\r | |
2217 | if (DataOutPduList == NULL) {\r | |
2218 | return EFI_OUT_OF_RESOURCES;\r | |
2219 | }\r | |
2220 | \r | |
2221 | Status = EFI_SUCCESS;\r | |
2222 | \r | |
2223 | //\r | |
2224 | // Send the Data Out PDU's one by one.\r | |
2225 | //\r | |
2226 | NET_LIST_FOR_EACH (Entry, DataOutPduList) {\r | |
2227 | Pdu = NET_LIST_USER_STRUCT (Entry, NET_BUF, List);\r | |
2228 | \r | |
2229 | Status = Tcp4IoTransmit (&Tcb->Conn->Tcp4Io, Pdu);\r | |
2230 | if (EFI_ERROR (Status)) {\r | |
2231 | break;\r | |
2232 | }\r | |
2233 | }\r | |
2234 | \r | |
2235 | IScsiFreeNbufList (DataOutPduList);\r | |
2236 | \r | |
2237 | return Status;\r | |
2238 | }\r | |
2239 | \r | |
12618416 | 2240 | /**\r |
6a690e23 | 2241 | Process the received iSCSI SCSI Data In PDU.\r |
2242 | \r | |
12618416 | 2243 | @param Pdu[in] The Data In PDU received.\r |
2244 | \r | |
2245 | @param Tcb[in] The task control block.\r | |
6a690e23 | 2246 | \r |
12618416 | 2247 | @param Packet[in][out] The EXT SCSI PASS THRU request packet.\r |
6a690e23 | 2248 | \r |
12618416 | 2249 | @retval EFI_SUCCES The check on the Data IN PDU is passed and some update\r |
2250 | actions are taken.\r | |
6a690e23 | 2251 | \r |
12618416 | 2252 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
6a690e23 | 2253 | \r |
12618416 | 2254 | **/\r |
2255 | EFI_STATUS\r | |
2256 | IScsiOnDataInRcvd (\r | |
2257 | IN NET_BUF *Pdu,\r | |
2258 | IN ISCSI_TCB *Tcb,\r | |
2259 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2260 | )\r | |
6a690e23 | 2261 | {\r |
2262 | ISCSI_SCSI_DATA_IN *DataInHdr;\r | |
2263 | EFI_STATUS Status;\r | |
2264 | \r | |
2265 | DataInHdr = (ISCSI_SCSI_DATA_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
2266 | \r | |
2267 | DataInHdr->InitiatorTaskTag = NTOHL (DataInHdr->InitiatorTaskTag);\r | |
2268 | DataInHdr->ExpCmdSN = NTOHL (DataInHdr->ExpCmdSN);\r | |
2269 | DataInHdr->MaxCmdSN = NTOHL (DataInHdr->MaxCmdSN);\r | |
2270 | DataInHdr->DataSN = NTOHL (DataInHdr->DataSN);\r | |
2271 | \r | |
2272 | //\r | |
2273 | // Check the DataSN.\r | |
2274 | //\r | |
2275 | Status = IScsiCheckSN (&Tcb->ExpDataSN, DataInHdr->DataSN);\r | |
2276 | if (EFI_ERROR (Status)) {\r | |
2277 | return Status;\r | |
2278 | }\r | |
2279 | \r | |
2280 | if (DataInHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2281 | return EFI_PROTOCOL_ERROR;\r | |
2282 | }\r | |
2283 | //\r | |
2284 | // Update the command related sequence numbers.\r | |
2285 | //\r | |
2286 | IScsiUpdateCmdSN (Tcb->Conn->Session, DataInHdr->MaxCmdSN, DataInHdr->ExpCmdSN);\r | |
2287 | \r | |
2288 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_STATUS_VALID)) {\r | |
2289 | if (!ISCSI_FLAG_ON (DataInHdr, ISCSI_BHS_FLAG_FINAL)) {\r | |
2290 | //\r | |
2291 | // The S bit is on but the F bit is off.\r | |
2292 | //\r | |
2293 | return EFI_PROTOCOL_ERROR;\r | |
2294 | }\r | |
2295 | \r | |
2296 | Tcb->StatusXferd = TRUE;\r | |
2297 | \r | |
2298 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_OVERFLOW | SCSI_DATA_IN_PDU_FLAG_UNDERFLOW)) {\r | |
2299 | //\r | |
2300 | // Underflow and Overflow are mutual flags.\r | |
2301 | //\r | |
2302 | return EFI_PROTOCOL_ERROR;\r | |
2303 | }\r | |
2304 | //\r | |
2305 | // S bit is on, the StatSN is valid.\r | |
2306 | //\r | |
2307 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NTOHL (DataInHdr->StatSN));\r | |
2308 | if (EFI_ERROR (Status)) {\r | |
2309 | return Status;\r | |
2310 | }\r | |
2311 | \r | |
2312 | Packet->HostAdapterStatus = 0;\r | |
2313 | Packet->TargetStatus = DataInHdr->Status;\r | |
2314 | \r | |
2315 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2316 | Packet->InTransferLength += NTOHL (DataInHdr->ResidualCount);\r | |
2317 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2318 | }\r | |
2319 | \r | |
2320 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2321 | Packet->InTransferLength -= NTOHL (DataInHdr->ResidualCount);\r | |
2322 | }\r | |
2323 | }\r | |
2324 | \r | |
2325 | return Status;\r | |
2326 | }\r | |
2327 | \r | |
12618416 | 2328 | /**\r |
2329 | Process the received iSCSI R2T PDU.\r | |
6a690e23 | 2330 | \r |
12618416 | 2331 | @param Pdu[in] The R2T PDU received.\r |
6a690e23 | 2332 | \r |
12618416 | 2333 | @param Tcb[in] The task control block.\r |
6a690e23 | 2334 | \r |
12618416 | 2335 | @param Lun[in] The Lun.\r |
6a690e23 | 2336 | \r |
12618416 | 2337 | @param Packet[in][out] The EXT SCSI PASS THRU request packet.\r |
6a690e23 | 2338 | \r |
12618416 | 2339 | @retval EFI_SUCCES The R2T PDU is valid and the solicited data is sent out.\r |
6a690e23 | 2340 | \r |
12618416 | 2341 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
6a690e23 | 2342 | \r |
12618416 | 2343 | **/\r |
2344 | EFI_STATUS\r | |
2345 | IScsiOnR2TRcvd (\r | |
2346 | IN NET_BUF *Pdu,\r | |
2347 | IN ISCSI_TCB *Tcb,\r | |
2348 | IN UINT64 Lun,\r | |
2349 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2350 | )\r | |
6a690e23 | 2351 | {\r |
2352 | ISCSI_READY_TO_TRANSFER *R2THdr;\r | |
2353 | EFI_STATUS Status;\r | |
2354 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2355 | UINT8 *Data;\r | |
2356 | \r | |
2357 | R2THdr = (ISCSI_READY_TO_TRANSFER *) NetbufGetByte (Pdu, 0, NULL);\r | |
2358 | \r | |
2359 | R2THdr->InitiatorTaskTag = NTOHL (R2THdr->InitiatorTaskTag);\r | |
2360 | R2THdr->TargetTransferTag = NTOHL (R2THdr->TargetTransferTag);\r | |
2361 | R2THdr->StatSN = NTOHL (R2THdr->StatSN);\r | |
2362 | R2THdr->R2TSN = NTOHL (R2THdr->R2TSN);\r | |
2363 | R2THdr->BufferOffset = NTOHL (R2THdr->BufferOffset);\r | |
2364 | R2THdr->DesiredDataTransferLength = NTOHL (R2THdr->DesiredDataTransferLength);\r | |
2365 | \r | |
2366 | if ((R2THdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) || !ISCSI_SEQ_EQ (R2THdr->StatSN, Tcb->Conn->ExpStatSN)) {\r | |
2367 | return EFI_PROTOCOL_ERROR;;\r | |
2368 | }\r | |
2369 | //\r | |
2370 | // Check the sequence number.\r | |
2371 | //\r | |
2372 | Status = IScsiCheckSN (&Tcb->ExpDataSN, R2THdr->R2TSN);\r | |
2373 | if (EFI_ERROR (Status)) {\r | |
2374 | return Status;\r | |
2375 | }\r | |
2376 | \r | |
2377 | XferContext = &Tcb->XferContext;\r | |
2378 | XferContext->TargetTransferTag = R2THdr->TargetTransferTag;\r | |
2379 | XferContext->Offset = R2THdr->BufferOffset;\r | |
2380 | XferContext->DesiredLength = R2THdr->DesiredDataTransferLength;\r | |
2381 | \r | |
2382 | if (((XferContext->Offset + XferContext->DesiredLength) > Packet->OutTransferLength) ||\r | |
2383 | (XferContext->DesiredLength > Tcb->Conn->Session->MaxBurstLength)\r | |
2384 | ) {\r | |
2385 | return EFI_PROTOCOL_ERROR;\r | |
2386 | }\r | |
2387 | //\r | |
2388 | // Send the data solicited by this R2T.\r | |
2389 | //\r | |
2390 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2391 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2392 | \r | |
2393 | return Status;\r | |
2394 | }\r | |
2395 | \r | |
12618416 | 2396 | /**\r |
6a690e23 | 2397 | Process the received iSCSI SCSI Response PDU.\r |
2398 | \r | |
12618416 | 2399 | @param Pdu[in] The Response PDU received.\r |
2400 | \r | |
2401 | @param Tcb[in] The task control block.\r | |
6a690e23 | 2402 | \r |
12618416 | 2403 | @param Packet[in][out] The EXT SCSI PASS THRU request packet.\r |
6a690e23 | 2404 | \r |
12618416 | 2405 | @retval EFI_SUCCES The Response PDU is processed.\r |
6a690e23 | 2406 | \r |
12618416 | 2407 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
6a690e23 | 2408 | \r |
12618416 | 2409 | **/\r |
2410 | EFI_STATUS\r | |
2411 | IScsiOnScsiRspRcvd (\r | |
2412 | IN NET_BUF *Pdu,\r | |
2413 | IN ISCSI_TCB *Tcb,\r | |
2414 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2415 | )\r | |
6a690e23 | 2416 | {\r |
2417 | SCSI_RESPONSE *ScsiRspHdr;\r | |
2418 | ISCSI_SENSE_DATA *SenseData;\r | |
2419 | EFI_STATUS Status;\r | |
2420 | UINT32 DataSegLen;\r | |
2421 | \r | |
2422 | ScsiRspHdr = (SCSI_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
2423 | \r | |
2424 | ScsiRspHdr->InitiatorTaskTag = NTOHL (ScsiRspHdr->InitiatorTaskTag);\r | |
2425 | if (ScsiRspHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2426 | return EFI_PROTOCOL_ERROR;\r | |
2427 | }\r | |
2428 | \r | |
2429 | ScsiRspHdr->StatSN = NTOHL (ScsiRspHdr->StatSN);\r | |
2430 | \r | |
2431 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, ScsiRspHdr->StatSN);\r | |
2432 | if (EFI_ERROR (Status)) {\r | |
2433 | return Status;\r | |
2434 | }\r | |
2435 | \r | |
2436 | ScsiRspHdr->MaxCmdSN = NTOHL (ScsiRspHdr->MaxCmdSN);\r | |
2437 | ScsiRspHdr->ExpCmdSN = NTOHL (ScsiRspHdr->ExpCmdSN);\r | |
2438 | IScsiUpdateCmdSN (Tcb->Conn->Session, ScsiRspHdr->MaxCmdSN, ScsiRspHdr->ExpCmdSN);\r | |
2439 | \r | |
2440 | Tcb->StatusXferd = TRUE;\r | |
2441 | \r | |
2442 | Packet->HostAdapterStatus = ScsiRspHdr->Response;\r | |
2443 | if (Packet->HostAdapterStatus != ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET) {\r | |
2444 | return EFI_SUCCESS;\r | |
2445 | }\r | |
2446 | \r | |
2447 | Packet->TargetStatus = ScsiRspHdr->Status;\r | |
2448 | \r | |
2449 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW | SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW) ||\r | |
2450 | ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW | SCSI_RSP_PDU_FLAG_UNDERFLOW)\r | |
2451 | ) {\r | |
2452 | return EFI_PROTOCOL_ERROR;\r | |
2453 | }\r | |
2454 | \r | |
2455 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW)) {\r | |
2456 | Packet->InTransferLength += NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2457 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2458 | }\r | |
2459 | \r | |
2460 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW)) {\r | |
2461 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2462 | }\r | |
2463 | \r | |
2464 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2465 | if (Packet->DataDirection == DataIn) {\r | |
2466 | Packet->InTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2467 | } else {\r | |
2468 | Packet->OutTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2469 | }\r | |
2470 | \r | |
2471 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2472 | }\r | |
2473 | \r | |
2474 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2475 | if (Packet->DataDirection == DataIn) {\r | |
2476 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2477 | } else {\r | |
2478 | Packet->OutTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2479 | }\r | |
2480 | }\r | |
2481 | \r | |
2482 | DataSegLen = ISCSI_GET_DATASEG_LEN (ScsiRspHdr);\r | |
2483 | if (DataSegLen != 0) {\r | |
2484 | SenseData = (ISCSI_SENSE_DATA *) NetbufGetByte (Pdu, sizeof (SCSI_RESPONSE), NULL);\r | |
2485 | \r | |
2486 | SenseData->Length = NTOHS (SenseData->Length);\r | |
2487 | \r | |
2488 | Packet->SenseDataLength = (UINT8) MIN (SenseData->Length, Packet->SenseDataLength);\r | |
2489 | if (Packet->SenseDataLength != 0) {\r | |
e48e37fc | 2490 | CopyMem (Packet->SenseData, &SenseData->Data[0], Packet->SenseDataLength);\r |
6a690e23 | 2491 | }\r |
2492 | } else {\r | |
2493 | Packet->SenseDataLength = 0;\r | |
2494 | }\r | |
2495 | \r | |
2496 | return Status;\r | |
2497 | }\r | |
2498 | \r | |
12618416 | 2499 | /**\r |
6a690e23 | 2500 | Process the received NOP In PDU.\r |
2501 | \r | |
12618416 | 2502 | @param Pdu[in] The NOP In PDU received.\r |
6a690e23 | 2503 | \r |
12618416 | 2504 | @param Tcb[in] The task control block.\r |
6a690e23 | 2505 | \r |
12618416 | 2506 | @retval EFI_SUCCES The NOP In PDU is processed and the related sequence\r |
2507 | numbers are updated.\r | |
6a690e23 | 2508 | \r |
12618416 | 2509 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
6a690e23 | 2510 | \r |
12618416 | 2511 | **/\r |
2512 | EFI_STATUS\r | |
2513 | IScsiOnNopInRcvd (\r | |
2514 | IN NET_BUF *Pdu,\r | |
2515 | IN ISCSI_TCB *Tcb\r | |
2516 | )\r | |
6a690e23 | 2517 | {\r |
2518 | ISCSI_NOP_IN *NopInHdr;\r | |
2519 | EFI_STATUS Status;\r | |
2520 | \r | |
2521 | NopInHdr = (ISCSI_NOP_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
2522 | \r | |
2523 | NopInHdr->StatSN = NTOHL (NopInHdr->StatSN);\r | |
2524 | NopInHdr->ExpCmdSN = NTOHL (NopInHdr->ExpCmdSN);\r | |
2525 | NopInHdr->MaxCmdSN = NTOHL (NopInHdr->MaxCmdSN);\r | |
2526 | \r | |
2527 | if (NopInHdr->InitiatorTaskTag == ISCSI_RESERVED_TAG) {\r | |
2528 | if (NopInHdr->StatSN != Tcb->Conn->ExpStatSN) {\r | |
2529 | return EFI_PROTOCOL_ERROR;\r | |
2530 | }\r | |
2531 | } else {\r | |
2532 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NopInHdr->StatSN);\r | |
2533 | if (EFI_ERROR (Status)) {\r | |
2534 | return Status;\r | |
2535 | }\r | |
2536 | }\r | |
2537 | \r | |
2538 | IScsiUpdateCmdSN (Tcb->Conn->Session, NopInHdr->MaxCmdSN, NopInHdr->ExpCmdSN);\r | |
2539 | \r | |
2540 | return EFI_SUCCESS;\r | |
2541 | }\r | |
2542 | \r | |
12618416 | 2543 | /**\r |
2544 | Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r | |
6a690e23 | 2545 | \r |
12618416 | 2546 | @param PassThru[in] The EXT SCSI PASS THRU protocol.\r |
6a690e23 | 2547 | \r |
12618416 | 2548 | @param Target[in] The target ID.\r |
6a690e23 | 2549 | \r |
12618416 | 2550 | @param Lun[in] The LUN.\r |
6a690e23 | 2551 | \r |
12618416 | 2552 | @param Packet[in][out] The request packet containing IO request, SCSI command\r |
2553 | buffer and buffers to read/write.\r | |
6a690e23 | 2554 | \r |
12618416 | 2555 | @retval EFI_SUCCES The SCSI command is executed and the result is updated to \r |
2556 | the Packet.\r | |
6a690e23 | 2557 | \r |
12618416 | 2558 | @retval EFI_DEVICE_ERROR Some unexpected error happened.\r |
6a690e23 | 2559 | \r |
12618416 | 2560 | **/\r |
2561 | EFI_STATUS\r | |
2562 | IScsiExecuteScsiCommand (\r | |
2563 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r | |
2564 | IN UINT8 *Target,\r | |
2565 | IN UINT64 Lun,\r | |
2566 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2567 | )\r | |
6a690e23 | 2568 | {\r |
2569 | EFI_STATUS Status;\r | |
2570 | ISCSI_DRIVER_DATA *Private;\r | |
2571 | ISCSI_SESSION *Session;\r | |
2572 | EFI_EVENT TimeoutEvent;\r | |
2573 | ISCSI_CONNECTION *Conn;\r | |
2574 | ISCSI_TCB *Tcb;\r | |
2575 | NET_BUF *Pdu;\r | |
2576 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2577 | UINT8 *Data;\r | |
2578 | ISCSI_IN_BUFFER_CONTEXT InBufferContext;\r | |
2579 | UINT64 Timeout;\r | |
69b0882d | 2580 | UINT8 *Buffer;\r |
6a690e23 | 2581 | \r |
2582 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (PassThru);\r | |
2583 | Session = &Private->Session;\r | |
2584 | Status = EFI_SUCCESS;\r | |
2585 | Tcb = NULL;\r | |
2586 | TimeoutEvent = NULL;\r | |
5c70cb32 | 2587 | Timeout = 0;\r |
6a690e23 | 2588 | \r |
2589 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2590 | return EFI_DEVICE_ERROR;\r | |
2591 | }\r | |
2592 | \r | |
2593 | Conn = NET_LIST_USER_STRUCT_S (\r | |
2594 | Session->Conns.ForwardLink,\r | |
2595 | ISCSI_CONNECTION,\r | |
2596 | Link,\r | |
2597 | ISCSI_CONNECTION_SIGNATURE\r | |
2598 | );\r | |
2599 | \r | |
2600 | if (Packet->Timeout != 0) {\r | |
2601 | Timeout = MultU64x32 (Packet->Timeout, 2);\r | |
6a690e23 | 2602 | }\r |
2603 | \r | |
2604 | Status = IScsiNewTcb (Conn, &Tcb);\r | |
2605 | if (EFI_ERROR (Status)) {\r | |
2606 | goto ON_EXIT;\r | |
2607 | }\r | |
2608 | //\r | |
2609 | // Encapsulate the SCSI request packet into an iSCSI SCSI Command PDU.\r | |
2610 | //\r | |
2611 | Pdu = IScsiNewScsiCmdPdu (Packet, Lun, Tcb);\r | |
2612 | if (Pdu == NULL) {\r | |
2613 | Status = EFI_OUT_OF_RESOURCES;\r | |
2614 | goto ON_EXIT;\r | |
2615 | }\r | |
2616 | \r | |
2617 | XferContext = &Tcb->XferContext;\r | |
69b0882d | 2618 | Buffer = NetbufGetByte (Pdu, 0, NULL);\r |
2619 | XferContext->Offset = ISCSI_GET_DATASEG_LEN (Buffer);\r | |
6a690e23 | 2620 | \r |
2621 | //\r | |
2622 | // Transmit the SCSI Command PDU.\r | |
2623 | //\r | |
2624 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
2625 | \r | |
2626 | NetbufFree (Pdu);\r | |
2627 | \r | |
2628 | if (EFI_ERROR (Status)) {\r | |
2629 | goto ON_EXIT;\r | |
2630 | }\r | |
2631 | \r | |
2632 | if (!Session->InitialR2T &&\r | |
2633 | (XferContext->Offset < Session->FirstBurstLength) &&\r | |
2634 | (XferContext->Offset < Packet->OutTransferLength)\r | |
2635 | ) {\r | |
2636 | //\r | |
2637 | // Unsolicited Data-Out sequence is allowed, there is remaining SCSI\r | |
2638 | // OUT data and the limit of FirstBurstLength is not reached.\r | |
2639 | //\r | |
2640 | XferContext->TargetTransferTag = ISCSI_RESERVED_TAG;\r | |
2641 | XferContext->DesiredLength = MIN (\r | |
2642 | Session->FirstBurstLength,\r | |
2643 | Packet->OutTransferLength - XferContext->Offset\r | |
2644 | );\r | |
2645 | \r | |
2646 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2647 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2648 | if (EFI_ERROR (Status)) {\r | |
2649 | goto ON_EXIT;\r | |
2650 | }\r | |
2651 | }\r | |
2652 | \r | |
2653 | InBufferContext.InData = (UINT8 *) Packet->InDataBuffer;\r | |
2654 | InBufferContext.InDataLen = Packet->InTransferLength;\r | |
2655 | \r | |
2656 | while (!Tcb->StatusXferd) {\r | |
5c70cb32 | 2657 | //\r |
2658 | // Start the timeout timer.\r | |
2659 | //\r | |
2660 | if (Timeout) {\r | |
2661 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, Timeout);\r | |
2662 | if (EFI_ERROR (Status)) {\r | |
2663 | goto ON_EXIT;\r | |
2664 | }\r | |
2665 | TimeoutEvent = Conn->TimeoutEvent; \r | |
2666 | }\r | |
6a690e23 | 2667 | //\r |
2668 | // try to receive PDU from target.\r | |
2669 | //\r | |
2670 | Status = IScsiReceivePdu (Conn, &Pdu, &InBufferContext, FALSE, FALSE, TimeoutEvent);\r | |
2671 | if (EFI_ERROR (Status)) {\r | |
2672 | goto ON_EXIT;\r | |
2673 | }\r | |
2674 | \r | |
2675 | switch (ISCSI_GET_OPCODE (NetbufGetByte (Pdu, 0, NULL))) {\r | |
2676 | case ISCSI_OPCODE_SCSI_DATA_IN:\r | |
2677 | Status = IScsiOnDataInRcvd (Pdu, Tcb, Packet);\r | |
2678 | break;\r | |
2679 | \r | |
2680 | case ISCSI_OPCODE_R2T:\r | |
2681 | Status = IScsiOnR2TRcvd (Pdu, Tcb, Lun, Packet);\r | |
2682 | break;\r | |
2683 | \r | |
2684 | case ISCSI_OPCODE_SCSI_RSP:\r | |
2685 | Status = IScsiOnScsiRspRcvd (Pdu, Tcb, Packet);\r | |
2686 | break;\r | |
2687 | \r | |
2688 | case ISCSI_OPCODE_NOP_IN:\r | |
2689 | Status = IScsiOnNopInRcvd (Pdu, Tcb);\r | |
2690 | break;\r | |
2691 | \r | |
2692 | case ISCSI_OPCODE_VENDOR_T0:\r | |
2693 | case ISCSI_OPCODE_VENDOR_T1:\r | |
2694 | case ISCSI_OPCODE_VENDOR_T2:\r | |
2695 | //\r | |
2696 | // These messages are vendor specific, skip them.\r | |
2697 | //\r | |
2698 | break;\r | |
2699 | \r | |
2700 | default:\r | |
2701 | Status = EFI_PROTOCOL_ERROR;\r | |
2702 | break;\r | |
2703 | }\r | |
2704 | \r | |
2705 | NetbufFree (Pdu);\r | |
2706 | \r | |
2707 | if (EFI_ERROR (Status)) {\r | |
2708 | break;\r | |
2709 | }\r | |
2710 | }\r | |
2711 | \r | |
2712 | ON_EXIT:\r | |
2713 | \r | |
2714 | if (TimeoutEvent != NULL) {\r | |
2715 | gBS->SetTimer (TimeoutEvent, TimerCancel, 0);\r | |
2716 | }\r | |
2717 | \r | |
2718 | if (Tcb != NULL) {\r | |
2719 | IScsiDelTcb (Tcb);\r | |
2720 | }\r | |
2721 | \r | |
2722 | if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r | |
2723 | //\r | |
2724 | // Reinstate the session.\r | |
2725 | //\r | |
2726 | if (EFI_ERROR (IScsiSessionReinstatement (Private))) {\r | |
2727 | Status = EFI_DEVICE_ERROR;\r | |
2728 | }\r | |
2729 | }\r | |
2730 | \r | |
2731 | return Status;\r | |
2732 | }\r | |
2733 | \r | |
12618416 | 2734 | /**\r |
6a690e23 | 2735 | Reinstate the session on some error.\r |
2736 | \r | |
12618416 | 2737 | @param Private[in] The iSCSI driver data.\r |
6a690e23 | 2738 | \r |
12618416 | 2739 | @retval EFI_SUCCES The session is reinstated from some error.\r |
6a690e23 | 2740 | \r |
12618416 | 2741 | @retval other Reinstatement failed.\r |
6a690e23 | 2742 | \r |
12618416 | 2743 | **/\r |
2744 | EFI_STATUS\r | |
2745 | IScsiSessionReinstatement (\r | |
2746 | IN ISCSI_DRIVER_DATA *Private\r | |
2747 | )\r | |
6a690e23 | 2748 | {\r |
2749 | ISCSI_SESSION *Session;\r | |
2750 | EFI_STATUS Status;\r | |
2751 | \r | |
2752 | Session = &Private->Session;\r | |
2753 | ASSERT (Session->State == SESSION_STATE_LOGGED_IN);\r | |
2754 | \r | |
2755 | //\r | |
2756 | // Abort the session and re-init it.\r | |
2757 | //\r | |
2758 | IScsiSessionAbort (Session);\r | |
2759 | IScsiSessionInit (Session, TRUE);\r | |
2760 | \r | |
2761 | //\r | |
2762 | // Login again.\r | |
2763 | //\r | |
2764 | Status = IScsiSessionLogin (Private);\r | |
2765 | \r | |
2766 | return Status;\r | |
2767 | }\r | |
2768 | \r | |
12618416 | 2769 | /**\r |
6a690e23 | 2770 | Initialize some session parameters before login.\r |
2771 | \r | |
12618416 | 2772 | @param Session[in] The iSCSI session.\r |
6a690e23 | 2773 | \r |
12618416 | 2774 | @param Recovery[in] Whether the request is from a fresh new start or recovery.\r |
6a690e23 | 2775 | \r |
12618416 | 2776 | @retval None.\r |
6a690e23 | 2777 | \r |
12618416 | 2778 | **/\r |
2779 | VOID\r | |
2780 | IScsiSessionInit (\r | |
2781 | IN ISCSI_SESSION *Session,\r | |
2782 | IN BOOLEAN Recovery\r | |
2783 | )\r | |
6a690e23 | 2784 | {\r |
2785 | UINT32 Random;\r | |
2786 | \r | |
2787 | if (!Recovery) {\r | |
2788 | Session->Signature = ISCSI_SESSION_SIGNATURE;\r | |
2789 | Session->State = SESSION_STATE_FREE;\r | |
2790 | \r | |
2791 | Random = NET_RANDOM (NetRandomInitSeed ());\r | |
2792 | \r | |
2793 | Session->ISID[0] = ISID_BYTE_0;\r | |
2794 | Session->ISID[1] = ISID_BYTE_1;\r | |
2795 | Session->ISID[2] = ISID_BYTE_2;\r | |
2796 | Session->ISID[3] = ISID_BYTE_3;\r | |
2797 | Session->ISID[4] = (UINT8) Random;\r | |
2798 | Session->ISID[5] = (UINT8) (Random >> 8);\r | |
2799 | \r | |
e48e37fc | 2800 | InitializeListHead (&Session->Conns);\r |
2801 | InitializeListHead (&Session->TcbList);\r | |
6a690e23 | 2802 | }\r |
2803 | \r | |
2804 | Session->TSIH = 0;\r | |
2805 | \r | |
2806 | Session->CmdSN = 1;\r | |
2807 | Session->InitiatorTaskTag = 1;\r | |
2808 | Session->NextCID = 1;\r | |
2809 | \r | |
2810 | Session->TargetPortalGroupTag = 0;\r | |
2811 | Session->MaxConnections = ISCSI_MAX_CONNS_PER_SESSION;\r | |
2812 | Session->InitialR2T = FALSE;\r | |
2813 | Session->ImmediateData = TRUE;\r | |
2814 | Session->MaxBurstLength = 262144;\r | |
2815 | Session->FirstBurstLength = MAX_RECV_DATA_SEG_LEN_IN_FFP;\r | |
2816 | Session->DefaultTime2Wait = 2;\r | |
2817 | Session->DefaultTime2Retain = 20;\r | |
2818 | Session->MaxOutstandingR2T = DEFAULT_MAX_OUTSTANDING_R2T;\r | |
2819 | Session->DataPDUInOrder = TRUE;\r | |
2820 | Session->DataSequenceInOrder = TRUE;\r | |
2821 | Session->ErrorRecoveryLevel = 0;\r | |
2822 | }\r | |
2823 | \r | |
12618416 | 2824 | /**\r |
6a690e23 | 2825 | Abort the iSCSI session, that is, reset all the connection and free the\r |
2826 | resources.\r | |
2827 | \r | |
12618416 | 2828 | @param Session[in] The iSCSI session.\r |
6a690e23 | 2829 | \r |
12618416 | 2830 | @retval EFI_SUCCES The session is aborted.\r |
6a690e23 | 2831 | \r |
12618416 | 2832 | **/\r |
2833 | EFI_STATUS\r | |
2834 | IScsiSessionAbort (\r | |
2835 | IN ISCSI_SESSION *Session\r | |
2836 | )\r | |
6a690e23 | 2837 | {\r |
2838 | ISCSI_DRIVER_DATA *Private;\r | |
2839 | ISCSI_CONNECTION *Conn;\r | |
2840 | \r | |
2841 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2842 | return EFI_SUCCESS;\r | |
2843 | }\r | |
2844 | \r | |
e48e37fc | 2845 | ASSERT (!IsListEmpty (&Session->Conns));\r |
6a690e23 | 2846 | \r |
2847 | Private = ISCSI_DRIVER_DATA_FROM_SESSION (Session);\r | |
2848 | \r | |
e48e37fc | 2849 | while (!IsListEmpty (&Session->Conns)) {\r |
6a690e23 | 2850 | Conn = NET_LIST_USER_STRUCT_S (\r |
2851 | Session->Conns.ForwardLink,\r | |
2852 | ISCSI_CONNECTION,\r | |
2853 | Link,\r | |
2854 | ISCSI_CONNECTION_SIGNATURE\r | |
2855 | );\r | |
2856 | \r | |
2857 | gBS->CloseProtocol (\r | |
2858 | Conn->Tcp4Io.Handle,\r | |
2859 | &gEfiTcp4ProtocolGuid,\r | |
2860 | Private->Image,\r | |
2861 | Private->ExtScsiPassThruHandle\r | |
2862 | );\r | |
2863 | \r | |
2864 | IScsiConnReset (Conn);\r | |
2865 | \r | |
2866 | IScsiDetatchConnection (Conn);\r | |
2867 | IScsiDestroyConnection (Conn);\r | |
2868 | }\r | |
2869 | \r | |
2870 | Session->State = SESSION_STATE_FAILED;\r | |
2871 | \r | |
2872 | return EFI_SUCCESS;\r | |
2873 | }\r |