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12618416 | 1 | /** @file\r |
55a64ae0 | 2 | The implementation of iSCSI protocol based on RFC3720.\r |
6a690e23 | 3 | \r |
58df7da7 | 4 | Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 5 | This program and the accompanying materials\r |
7a444476 | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
6a690e23 | 12 | \r |
12618416 | 13 | **/\r |
6a690e23 | 14 | \r |
15 | #include "IScsiImpl.h"\r | |
16 | \r | |
fe1e36e5 | 17 | UINT32 mDataSegPad = 0;\r |
6a690e23 | 18 | \r |
12618416 | 19 | /**\r |
6a690e23 | 20 | Attach the iSCSI connection to the iSCSI session. \r |
21 | \r | |
c5de0d55 | 22 | @param[in, out] Session The iSCSI session.\r |
23 | @param[in, out] Conn The iSCSI connection.\r | |
12618416 | 24 | **/\r |
25 | VOID\r | |
26 | IScsiAttatchConnection (\r | |
c5de0d55 | 27 | IN OUT ISCSI_SESSION *Session,\r |
28 | IN OUT ISCSI_CONNECTION *Conn\r | |
12618416 | 29 | )\r |
6a690e23 | 30 | {\r |
e48e37fc | 31 | InsertTailList (&Session->Conns, &Conn->Link);\r |
6a690e23 | 32 | Conn->Session = Session;\r |
33 | Session->NumConns++;\r | |
34 | }\r | |
35 | \r | |
12618416 | 36 | /**\r |
6a690e23 | 37 | Detach the iSCSI connection from the session it belongs to. \r |
38 | \r | |
c5de0d55 | 39 | @param[in, out] Conn The iSCSI connection.\r |
12618416 | 40 | **/\r |
41 | VOID\r | |
42 | IScsiDetatchConnection (\r | |
c5de0d55 | 43 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 44 | )\r |
6a690e23 | 45 | {\r |
e48e37fc | 46 | RemoveEntryList (&Conn->Link);\r |
6a690e23 | 47 | Conn->Session->NumConns--;\r |
48 | Conn->Session = NULL;\r | |
49 | }\r | |
50 | \r | |
12618416 | 51 | /**\r |
6a690e23 | 52 | Check the sequence number according to RFC3720. \r |
53 | \r | |
c5de0d55 | 54 | @param[in, out] ExpSN The currently expected sequence number.\r |
55 | @param[in] NewSN The sequence number to check.\r | |
6a690e23 | 56 | \r |
db3e605d | 57 | @retval EFI_SUCCESS The check passed and the ExpSN is increased.\r |
58 | @retval EFI_NOT_READY Response was sent due to a retransmission request.\r | |
59 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
12618416 | 60 | **/\r |
61 | EFI_STATUS\r | |
62 | IScsiCheckSN (\r | |
c5de0d55 | 63 | IN OUT UINT32 *ExpSN,\r |
64 | IN UINT32 NewSN\r | |
12618416 | 65 | )\r |
6a690e23 | 66 | {\r |
67 | if (!ISCSI_SEQ_EQ (NewSN, *ExpSN)) {\r | |
68 | if (ISCSI_SEQ_LT (NewSN, *ExpSN)) {\r | |
69 | //\r | |
70 | // Duplicate\r | |
71 | //\r | |
72 | return EFI_NOT_READY;\r | |
73 | } else {\r | |
74 | return EFI_PROTOCOL_ERROR;\r | |
75 | }\r | |
76 | } else {\r | |
77 | //\r | |
78 | // Advance the ExpSN\r | |
79 | //\r | |
80 | (*ExpSN)++;\r | |
81 | return EFI_SUCCESS;\r | |
82 | }\r | |
83 | }\r | |
84 | \r | |
12618416 | 85 | /**\r |
6a690e23 | 86 | Update the sequence numbers for the iSCSI command.\r |
87 | \r | |
c5de0d55 | 88 | @param[in, out] Session The iSCSI session.\r |
89 | @param[in] MaxCmdSN Maximum CmdSN from the target.\r | |
90 | @param[in] ExpCmdSN Next expected CmdSN from the target.\r | |
12618416 | 91 | **/\r |
92 | VOID\r | |
93 | IScsiUpdateCmdSN (\r | |
c5de0d55 | 94 | IN OUT ISCSI_SESSION *Session,\r |
95 | IN UINT32 MaxCmdSN,\r | |
96 | IN UINT32 ExpCmdSN\r | |
12618416 | 97 | )\r |
6a690e23 | 98 | {\r |
99 | if (ISCSI_SEQ_LT (MaxCmdSN, ExpCmdSN - 1)) {\r | |
100 | return ;\r | |
101 | }\r | |
102 | \r | |
103 | if (ISCSI_SEQ_GT (MaxCmdSN, Session->MaxCmdSN)) {\r | |
104 | Session->MaxCmdSN = MaxCmdSN;\r | |
105 | }\r | |
106 | \r | |
107 | if (ISCSI_SEQ_GT (ExpCmdSN, Session->ExpCmdSN)) {\r | |
108 | Session->ExpCmdSN = ExpCmdSN;\r | |
109 | }\r | |
110 | }\r | |
111 | \r | |
12618416 | 112 | /**\r |
6a690e23 | 113 | This function does the iSCSI connection login.\r |
114 | \r | |
c5de0d55 | 115 | @param[in, out] Conn The iSCSI connection to login.\r |
6a690e23 | 116 | \r |
12618416 | 117 | @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r |
12618416 | 118 | @retval EFI_TIMEOUT Timeout happened during the login procedure.\r |
963dbb30 | 119 | @retval Others Other errors as indicated. \r |
12618416 | 120 | **/\r |
121 | EFI_STATUS\r | |
122 | IScsiConnLogin (\r | |
c5de0d55 | 123 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 124 | )\r |
6a690e23 | 125 | {\r |
126 | EFI_STATUS Status;\r | |
127 | \r | |
128 | //\r | |
129 | // Start the timer, wait 16 seconds to establish the TCP connection.\r | |
130 | //\r | |
131 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, 16 * TICKS_PER_SECOND);\r | |
132 | if (EFI_ERROR (Status)) {\r | |
133 | return Status;\r | |
134 | }\r | |
135 | //\r | |
136 | // try to establish the tcp connection\r | |
137 | //\r | |
138 | Status = Tcp4IoConnect (&Conn->Tcp4Io, Conn->TimeoutEvent);\r | |
139 | if (EFI_ERROR (Status)) {\r | |
140 | return Status;\r | |
141 | }\r | |
142 | \r | |
143 | gBS->SetTimer (Conn->TimeoutEvent, TimerCancel, 0);\r | |
144 | Conn->State = CONN_STATE_IN_LOGIN;\r | |
145 | \r | |
146 | //\r | |
147 | // connection is established, start the iSCSI Login\r | |
148 | //\r | |
149 | do {\r | |
150 | Status = IScsiSendLoginReq (Conn);\r | |
151 | if (EFI_ERROR (Status)) {\r | |
152 | break;\r | |
153 | }\r | |
154 | \r | |
155 | Status = IScsiReceiveLoginRsp (Conn);\r | |
156 | if (EFI_ERROR (Status)) {\r | |
157 | break;\r | |
158 | }\r | |
159 | } while (Conn->CurrentStage != ISCSI_FULL_FEATURE_PHASE);\r | |
160 | \r | |
161 | return Status;\r | |
162 | }\r | |
163 | \r | |
12618416 | 164 | /**\r |
165 | Reset the iSCSI connection.\r | |
166 | \r | |
c5de0d55 | 167 | @param[in, out] Conn The iSCSI connection to reset.\r |
12618416 | 168 | **/\r |
6a690e23 | 169 | VOID\r |
170 | IScsiConnReset (\r | |
c5de0d55 | 171 | IN OUT ISCSI_CONNECTION *Conn\r |
6a690e23 | 172 | )\r |
12618416 | 173 | {\r |
174 | Tcp4IoReset (&Conn->Tcp4Io);\r | |
175 | }\r | |
6a690e23 | 176 | \r |
12618416 | 177 | /**\r |
178 | Create a TCP connection for the iSCSI session.\r | |
6a690e23 | 179 | \r |
db3e605d | 180 | @param[in] Private The iSCSI driver data.\r |
181 | @param[in] Session Maximum CmdSN from the target.\r | |
6a690e23 | 182 | \r |
db3e605d | 183 | @return The newly created iSCSI connection.\r |
12618416 | 184 | **/\r |
6a690e23 | 185 | ISCSI_CONNECTION *\r |
186 | IScsiCreateConnection (\r | |
187 | IN ISCSI_DRIVER_DATA *Private,\r | |
188 | IN ISCSI_SESSION *Session\r | |
189 | )\r | |
6a690e23 | 190 | {\r |
191 | ISCSI_CONNECTION *Conn;\r | |
192 | TCP4_IO_CONFIG_DATA Tcp4IoConfig;\r | |
193 | EFI_STATUS Status;\r | |
194 | \r | |
e48e37fc | 195 | Conn = AllocatePool (sizeof (ISCSI_CONNECTION));\r |
6a690e23 | 196 | if (Conn == NULL) {\r |
197 | return NULL;\r | |
198 | }\r | |
199 | \r | |
200 | Conn->Signature = ISCSI_CONNECTION_SIGNATURE;\r | |
201 | Conn->State = CONN_STATE_FREE;\r | |
202 | Conn->CurrentStage = ISCSI_SECURITY_NEGOTIATION;\r | |
203 | Conn->NextStage = ISCSI_LOGIN_OPERATIONAL_NEGOTIATION;\r | |
204 | Conn->CHAPStep = ISCSI_CHAP_INITIAL;\r | |
205 | Conn->ExpStatSN = 0;\r | |
206 | Conn->PartialReqSent = FALSE;\r | |
207 | Conn->PartialRspRcvd = FALSE;\r | |
a78d176c | 208 | Conn->Cid = Session->NextCid++;\r |
6a690e23 | 209 | \r |
210 | Status = gBS->CreateEvent (\r | |
e53a6ea9 | 211 | EVT_TIMER,\r |
e48e37fc | 212 | TPL_CALLBACK,\r |
6a690e23 | 213 | NULL,\r |
214 | NULL,\r | |
215 | &Conn->TimeoutEvent\r | |
216 | );\r | |
217 | if (EFI_ERROR (Status)) {\r | |
766c7483 | 218 | FreePool (Conn);\r |
6a690e23 | 219 | return NULL;\r |
220 | }\r | |
221 | \r | |
222 | NetbufQueInit (&Conn->RspQue);\r | |
223 | \r | |
224 | //\r | |
225 | // set the default connection-only parameters\r | |
226 | //\r | |
20621542 | 227 | Conn->MaxRecvDataSegmentLength = DEFAULT_MAX_RECV_DATA_SEG_LEN;\r |
f6b7393c | 228 | Conn->HeaderDigest = IScsiDigestNone;\r |
229 | Conn->DataDigest = IScsiDigestNone;\r | |
6a690e23 | 230 | \r |
e48e37fc | 231 | CopyMem (&Tcp4IoConfig.LocalIp, &Session->ConfigData.NvData.LocalIp, sizeof (EFI_IPv4_ADDRESS));\r |
232 | CopyMem (&Tcp4IoConfig.SubnetMask, &Session->ConfigData.NvData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
233 | CopyMem (&Tcp4IoConfig.Gateway, &Session->ConfigData.NvData.Gateway, sizeof (EFI_IPv4_ADDRESS));\r | |
234 | CopyMem (&Tcp4IoConfig.RemoteIp, &Session->ConfigData.NvData.TargetIp, sizeof (EFI_IPv4_ADDRESS));\r | |
6a690e23 | 235 | \r |
236 | Tcp4IoConfig.RemotePort = Session->ConfigData.NvData.TargetPort;\r | |
237 | \r | |
238 | //\r | |
239 | // Create the tcp4 IO for this connection\r | |
240 | //\r | |
241 | Status = Tcp4IoCreateSocket (\r | |
242 | Private->Image,\r | |
243 | Private->Controller,\r | |
244 | &Tcp4IoConfig,\r | |
245 | &Conn->Tcp4Io\r | |
246 | );\r | |
247 | if (EFI_ERROR (Status)) {\r | |
248 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
766c7483 | 249 | FreePool (Conn);\r |
6a690e23 | 250 | Conn = NULL;\r |
251 | }\r | |
252 | \r | |
253 | return Conn;\r | |
254 | }\r | |
255 | \r | |
12618416 | 256 | /**\r |
6a690e23 | 257 | Destroy an iSCSI connection.\r |
258 | \r | |
db3e605d | 259 | @param[in] Conn The connection to destroy.\r |
12618416 | 260 | **/\r |
261 | VOID\r | |
262 | IScsiDestroyConnection (\r | |
263 | IN ISCSI_CONNECTION *Conn\r | |
264 | )\r | |
6a690e23 | 265 | {\r |
266 | Tcp4IoDestroySocket (&Conn->Tcp4Io);\r | |
267 | NetbufQueFlush (&Conn->RspQue);\r | |
268 | gBS->CloseEvent (Conn->TimeoutEvent);\r | |
766c7483 | 269 | FreePool (Conn);\r |
6a690e23 | 270 | }\r |
271 | \r | |
12618416 | 272 | /**\r |
6a690e23 | 273 | Login the iSCSI session.\r |
274 | \r | |
db3e605d | 275 | @param[in] Private The iSCSI driver data.\r |
6a690e23 | 276 | \r |
12618416 | 277 | @retval EFI_SUCCESS The iSCSI session login procedure finished.\r |
12618416 | 278 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
dd29f3ed | 279 | @retval EFI_NO_MEDIA There was a media error.\r |
963dbb30 | 280 | @retval Others Other errors as indicated.\r |
dd29f3ed | 281 | \r |
12618416 | 282 | **/\r |
283 | EFI_STATUS\r | |
284 | IScsiSessionLogin (\r | |
285 | IN ISCSI_DRIVER_DATA *Private\r | |
286 | )\r | |
6a690e23 | 287 | {\r |
288 | EFI_STATUS Status;\r | |
289 | ISCSI_SESSION *Session;\r | |
290 | ISCSI_CONNECTION *Conn;\r | |
291 | EFI_TCP4_PROTOCOL *Tcp4;\r | |
dd29f3ed | 292 | BOOLEAN MediaPresent;\r |
6a690e23 | 293 | \r |
294 | Session = &Private->Session;\r | |
295 | \r | |
dd29f3ed | 296 | //\r |
297 | // Check media status before session login\r | |
298 | //\r | |
299 | MediaPresent = TRUE;\r | |
300 | NetLibDetectMedia (Private->Controller, &MediaPresent);\r | |
301 | if (!MediaPresent) {\r | |
302 | return EFI_NO_MEDIA;\r | |
303 | }\r | |
304 | \r | |
312e3bdf | 305 | //\r |
306 | // Set session identifier\r | |
307 | //\r | |
308 | CopyMem (Session->Isid, Session->ConfigData.NvData.IsId, 6);\r | |
309 | \r | |
6a690e23 | 310 | //\r |
311 | // Create a connection for the session.\r | |
312 | //\r | |
313 | Conn = IScsiCreateConnection (Private, Session);\r | |
314 | if (Conn == NULL) {\r | |
315 | return EFI_OUT_OF_RESOURCES;\r | |
316 | }\r | |
317 | \r | |
318 | IScsiAttatchConnection (Session, Conn);\r | |
319 | \r | |
320 | //\r | |
321 | // Login througth the newly created connection.\r | |
322 | //\r | |
323 | Status = IScsiConnLogin (Conn);\r | |
324 | if (EFI_ERROR (Status)) {\r | |
325 | IScsiConnReset (Conn);\r | |
326 | IScsiDetatchConnection (Conn);\r | |
327 | IScsiDestroyConnection (Conn);\r | |
328 | } else {\r | |
329 | Session->State = SESSION_STATE_LOGGED_IN;\r | |
330 | \r | |
331 | gBS->OpenProtocol (\r | |
332 | Conn->Tcp4Io.Handle,\r | |
333 | &gEfiTcp4ProtocolGuid,\r | |
334 | (VOID **)&Tcp4,\r | |
335 | Private->Image,\r | |
336 | Private->ExtScsiPassThruHandle,\r | |
337 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
338 | );\r | |
339 | }\r | |
340 | \r | |
341 | return Status;\r | |
342 | }\r | |
343 | \r | |
12618416 | 344 | /**\r |
6a690e23 | 345 | Build and send the iSCSI login request to the iSCSI target according to\r |
346 | the current login stage.\r | |
347 | \r | |
db3e605d | 348 | @param[in] Conn The connection in the iSCSI login phase.\r |
6a690e23 | 349 | \r |
12618416 | 350 | @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r |
351 | connection.\r | |
12618416 | 352 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
db3e605d | 353 | @retval EFI_DEVICE_ERROR Some kind of device error happened.\r |
12618416 | 354 | **/\r |
355 | EFI_STATUS\r | |
356 | IScsiSendLoginReq (\r | |
357 | IN ISCSI_CONNECTION *Conn\r | |
358 | )\r | |
6a690e23 | 359 | {\r |
360 | NET_BUF *Pdu;\r | |
361 | EFI_STATUS Status;\r | |
362 | \r | |
363 | //\r | |
364 | // build the Login Request PDU\r | |
365 | //\r | |
366 | Pdu = IScsiPrepareLoginReq (Conn);\r | |
367 | if (Pdu == NULL) {\r | |
368 | return EFI_DEVICE_ERROR;\r | |
369 | }\r | |
370 | //\r | |
371 | // Send it to the iSCSI target.\r | |
372 | //\r | |
373 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
374 | \r | |
375 | NetbufFree (Pdu);\r | |
376 | \r | |
377 | return Status;\r | |
378 | }\r | |
379 | \r | |
12618416 | 380 | /**\r |
6a690e23 | 381 | Receive and process the iSCSI login response.\r |
382 | \r | |
db3e605d | 383 | @param[in] Conn The connection in the iSCSI login phase.\r |
384 | \r | |
12618416 | 385 | @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r |
963dbb30 | 386 | @retval Others Other errors as indicated.\r |
12618416 | 387 | **/\r |
388 | EFI_STATUS\r | |
389 | IScsiReceiveLoginRsp (\r | |
390 | IN ISCSI_CONNECTION *Conn\r | |
391 | )\r | |
6a690e23 | 392 | {\r |
393 | EFI_STATUS Status;\r | |
394 | NET_BUF *Pdu;\r | |
395 | \r | |
396 | //\r | |
397 | // Receive the iSCSI login response.\r | |
398 | //\r | |
399 | Status = IScsiReceivePdu (Conn, &Pdu, NULL, FALSE, FALSE, NULL);\r | |
400 | if (EFI_ERROR (Status)) {\r | |
401 | return Status;\r | |
402 | }\r | |
403 | //\r | |
404 | // A Login Response is received, process it.\r | |
405 | //\r | |
328ce03e | 406 | ASSERT (Pdu != NULL);\r |
6a690e23 | 407 | Status = IScsiProcessLoginRsp (Conn, Pdu);\r |
408 | \r | |
409 | NetbufFree (Pdu);\r | |
410 | \r | |
411 | return Status;\r | |
412 | }\r | |
413 | \r | |
12618416 | 414 | /**\r |
6a690e23 | 415 | Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r |
416 | The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r | |
417 | updated.\r | |
418 | \r | |
c5de0d55 | 419 | @param[in, out] Pdu The iSCSI PDU whose data segment the key-value pair will\r |
12618416 | 420 | be added to.\r |
c5de0d55 | 421 | @param[in] Key The key name string.\r |
422 | @param[in] Value The value string.\r | |
6a690e23 | 423 | \r |
12618416 | 424 | @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r |
425 | the correspondence length fields are updated.\r | |
12618416 | 426 | @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r |
427 | pair.\r | |
12618416 | 428 | **/\r |
429 | EFI_STATUS\r | |
430 | IScsiAddKeyValuePair (\r | |
c5de0d55 | 431 | IN OUT NET_BUF *Pdu,\r |
12618416 | 432 | IN CHAR8 *Key,\r |
433 | IN CHAR8 *Value\r | |
434 | )\r | |
6a690e23 | 435 | {\r |
436 | UINT32 DataSegLen;\r | |
437 | UINT32 KeyLen;\r | |
438 | UINT32 ValueLen;\r | |
439 | UINT32 TotalLen;\r | |
440 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
441 | CHAR8 *Data;\r | |
442 | \r | |
443 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
444 | if (LoginReq == NULL) {\r |
445 | return EFI_PROTOCOL_ERROR;\r | |
446 | }\r | |
6a690e23 | 447 | DataSegLen = NTOH24 (LoginReq->DataSegmentLength);\r |
448 | \r | |
449 | KeyLen = (UINT32) AsciiStrLen (Key);\r | |
450 | ValueLen = (UINT32) AsciiStrLen (Value);\r | |
451 | \r | |
452 | //\r | |
453 | // 1 byte for the key value separator '=' and 1 byte for the null\r | |
454 | // delimiter after the value.\r | |
455 | //\r | |
456 | TotalLen = KeyLen + 1 + ValueLen + 1;\r | |
457 | \r | |
458 | //\r | |
459 | // Allocate the space for the key-value pair.\r | |
460 | //\r | |
69b0882d | 461 | Data = (CHAR8 *)NetbufAllocSpace (Pdu, TotalLen, NET_BUF_TAIL);\r |
6a690e23 | 462 | if (Data == NULL) {\r |
463 | return EFI_OUT_OF_RESOURCES;\r | |
464 | }\r | |
465 | //\r | |
466 | // Add the key.\r | |
467 | //\r | |
e48e37fc | 468 | CopyMem (Data, Key, KeyLen);\r |
6a690e23 | 469 | Data += KeyLen;\r |
470 | \r | |
471 | *Data = '=';\r | |
472 | Data++;\r | |
473 | \r | |
474 | //\r | |
475 | // Add the value.\r | |
476 | //\r | |
e48e37fc | 477 | CopyMem (Data, Value, ValueLen);\r |
6a690e23 | 478 | Data += ValueLen;\r |
479 | \r | |
480 | *Data = '\0';\r | |
481 | \r | |
482 | //\r | |
483 | // update the DataSegmentLength\r | |
484 | //\r | |
485 | ISCSI_SET_DATASEG_LEN (LoginReq, DataSegLen + TotalLen);\r | |
486 | \r | |
487 | return EFI_SUCCESS;\r | |
488 | }\r | |
489 | \r | |
12618416 | 490 | /**\r |
6a690e23 | 491 | Prepare the iSCSI login request to be sent according to the current login status.\r |
492 | \r | |
c5de0d55 | 493 | @param[in, out] Conn The connection in the iSCSI login phase.\r |
6a690e23 | 494 | \r |
db3e605d | 495 | @return The pointer to the net buffer containing the iSCSI login request built.\r |
963dbb30 | 496 | @retval Others Other errors as indicated.\r |
12618416 | 497 | **/\r |
498 | NET_BUF *\r | |
499 | IScsiPrepareLoginReq (\r | |
c5de0d55 | 500 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 501 | )\r |
6a690e23 | 502 | {\r |
503 | ISCSI_SESSION *Session;\r | |
504 | NET_BUF *Nbuf;\r | |
505 | ISCSI_LOGIN_REQUEST *LoginReq;\r | |
506 | EFI_STATUS Status;\r | |
507 | \r | |
508 | Session = Conn->Session;\r | |
509 | \r | |
510 | Nbuf = NetbufAlloc (sizeof (ISCSI_LOGIN_REQUEST) + DEFAULT_MAX_RECV_DATA_SEG_LEN);\r | |
511 | if (Nbuf == NULL) {\r | |
512 | return NULL;\r | |
513 | }\r | |
514 | \r | |
515 | LoginReq = (ISCSI_LOGIN_REQUEST *) NetbufAllocSpace (Nbuf, sizeof (ISCSI_LOGIN_REQUEST), NET_BUF_TAIL);\r | |
653ef62e | 516 | ASSERT (LoginReq != NULL);\r |
e48e37fc | 517 | ZeroMem (LoginReq, sizeof (ISCSI_LOGIN_REQUEST));\r |
6a690e23 | 518 | \r |
519 | //\r | |
520 | // Init the login request pdu\r | |
521 | //\r | |
522 | ISCSI_SET_OPCODE (LoginReq, ISCSI_OPCODE_LOGIN_REQ, ISCSI_REQ_IMMEDIATE);\r | |
523 | ISCSI_SET_STAGES (LoginReq, Conn->CurrentStage, Conn->NextStage);\r | |
524 | LoginReq->VersionMax = ISCSI_VERSION_MAX;\r | |
525 | LoginReq->VersionMin = ISCSI_VERSION_MIN;\r | |
a78d176c | 526 | LoginReq->Tsih = HTONS (Session->Tsih);\r |
6a690e23 | 527 | LoginReq->InitiatorTaskTag = HTONL (Session->InitiatorTaskTag);\r |
a78d176c | 528 | LoginReq->Cid = HTONS (Conn->Cid);\r |
6a690e23 | 529 | LoginReq->CmdSN = HTONL (Session->CmdSN);\r |
530 | \r | |
531 | //\r | |
532 | // For the first Login Request on a coonection this is ExpStatSN for the\r | |
533 | // old connection and this field is only valid if the Login Request restarts\r | |
534 | // a connection.\r | |
535 | // For subsequent Login Requests it is used to acknowledge the Login Responses\r | |
536 | // with their increasing StatSN values.\r | |
537 | //\r | |
538 | LoginReq->ExpStatSN = HTONL (Conn->ExpStatSN);\r | |
a78d176c | 539 | CopyMem (LoginReq->Isid, Session->Isid, sizeof (LoginReq->Isid));\r |
6a690e23 | 540 | \r |
541 | if (Conn->PartialRspRcvd) {\r | |
542 | //\r | |
543 | // A partial response, initiator must send an empty Login Request.\r | |
544 | //\r | |
545 | return Nbuf;\r | |
546 | }\r | |
547 | \r | |
548 | switch (Conn->CurrentStage) {\r | |
549 | case ISCSI_SECURITY_NEGOTIATION:\r | |
550 | Status = IScsiCHAPToSendReq (Conn, Nbuf);\r | |
551 | break;\r | |
552 | \r | |
553 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
554 | Status = IScsiFillOpParams (Conn, Nbuf);\r | |
555 | ISCSI_SET_FLAG (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r | |
556 | break;\r | |
557 | \r | |
558 | default:\r | |
559 | //\r | |
560 | // something error happens...\r | |
561 | //\r | |
562 | Status = EFI_DEVICE_ERROR;\r | |
563 | break;\r | |
564 | }\r | |
565 | \r | |
566 | if (EFI_ERROR (Status)) {\r | |
567 | NetbufFree (Nbuf);\r | |
568 | Nbuf = NULL;\r | |
569 | } else {\r | |
570 | //\r | |
571 | // Pad the data segment if needed.\r | |
572 | //\r | |
573 | IScsiPadSegment (Nbuf, ISCSI_GET_DATASEG_LEN (LoginReq));\r | |
574 | //\r | |
575 | // Check whether we will issue the stage transition signal?\r | |
576 | //\r | |
69b0882d | 577 | Conn->TransitInitiated = (BOOLEAN) ISCSI_FLAG_ON (LoginReq, ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT);\r |
6a690e23 | 578 | }\r |
579 | \r | |
580 | return Nbuf;\r | |
581 | }\r | |
582 | \r | |
12618416 | 583 | /**\r |
6a690e23 | 584 | Process the iSCSI Login Response.\r |
585 | \r | |
c5de0d55 | 586 | @param[in, out] Conn The connection on which the iSCSI login response is received.\r |
587 | @param[in, out] Pdu The iSCSI login response PDU.\r | |
6a690e23 | 588 | \r |
12618416 | 589 | @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r |
12618416 | 590 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r |
db3e605d | 591 | @retval EFI_MEDIA_CHANGED Target is redirected.\r |
963dbb30 | 592 | @retval Others Other errors as indicated.\r |
12618416 | 593 | **/\r |
594 | EFI_STATUS\r | |
595 | IScsiProcessLoginRsp (\r | |
c5de0d55 | 596 | IN OUT ISCSI_CONNECTION *Conn,\r |
597 | IN OUT NET_BUF *Pdu\r | |
12618416 | 598 | )\r |
6a690e23 | 599 | {\r |
600 | EFI_STATUS Status;\r | |
601 | ISCSI_SESSION *Session;\r | |
602 | ISCSI_LOGIN_RESPONSE *LoginRsp;\r | |
603 | BOOLEAN Transit;\r | |
604 | BOOLEAN Continue;\r | |
605 | UINT8 CurrentStage;\r | |
606 | UINT8 NextStage;\r | |
607 | UINT8 *DataSeg;\r | |
608 | UINT32 DataSegLen;\r | |
609 | \r | |
610 | Session = Conn->Session;\r | |
611 | \r | |
612 | LoginRsp = (ISCSI_LOGIN_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
613 | if (LoginRsp == NULL) {\r |
614 | return EFI_PROTOCOL_ERROR;\r | |
615 | }\r | |
6a690e23 | 616 | if (!ISCSI_CHECK_OPCODE (LoginRsp, ISCSI_OPCODE_LOGIN_RSP)) {\r |
617 | //\r | |
618 | // It's not a Login Response\r | |
619 | //\r | |
620 | return EFI_PROTOCOL_ERROR;\r | |
621 | }\r | |
622 | //\r | |
623 | // Get the data segment if any.\r | |
624 | //\r | |
625 | DataSegLen = ISCSI_GET_DATASEG_LEN (LoginRsp);\r | |
626 | if (DataSegLen != 0) {\r | |
627 | DataSeg = NetbufGetByte (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NULL);\r | |
628 | } else {\r | |
629 | DataSeg = NULL;\r | |
630 | }\r | |
631 | //\r | |
632 | // Check the status class in the login response PDU.\r | |
633 | //\r | |
634 | switch (LoginRsp->StatusClass) {\r | |
635 | case ISCSI_LOGIN_STATUS_SUCCESS:\r | |
636 | //\r | |
637 | // Just break here, the response and the data segment will be processed later.\r | |
638 | //\r | |
639 | break;\r | |
640 | \r | |
641 | case ISCSI_LOGIN_STATUS_REDIRECTION:\r | |
642 | //\r | |
643 | // The target may be moved to a different address\r | |
644 | //\r | |
645 | if (DataSeg == NULL) {\r | |
646 | return EFI_PROTOCOL_ERROR;\r | |
647 | }\r | |
648 | //\r | |
649 | // Process the TargetAddress key-value strings in the data segment to update the\r | |
650 | // target address info.\r | |
651 | //\r | |
69b0882d | 652 | Status = IScsiUpdateTargetAddress (Session, (CHAR8 *)DataSeg, DataSegLen);\r |
6a690e23 | 653 | if (EFI_ERROR (Status)) {\r |
654 | return Status;\r | |
655 | }\r | |
656 | //\r | |
657 | // Session will be restarted on this error status because the Target is\r | |
658 | // redirected by this Login Response.\r | |
659 | //\r | |
660 | return EFI_MEDIA_CHANGED;\r | |
661 | \r | |
662 | default:\r | |
663 | //\r | |
664 | // Initiator Error, Target Error, or any other undefined error code.\r | |
665 | //\r | |
666 | return EFI_PROTOCOL_ERROR;\r | |
667 | }\r | |
668 | //\r | |
669 | // The status is sucess, extract the wanted fields from the header segment.\r | |
670 | //\r | |
69b0882d | 671 | Transit = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT);\r |
672 | Continue = (BOOLEAN) ISCSI_FLAG_ON (LoginRsp, ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE);\r | |
6a690e23 | 673 | \r |
69b0882d | 674 | CurrentStage = (UINT8) ISCSI_GET_CURRENT_STAGE (LoginRsp);\r |
675 | NextStage = (UINT8) ISCSI_GET_NEXT_STAGE (LoginRsp);\r | |
6a690e23 | 676 | \r |
677 | LoginRsp->InitiatorTaskTag = NTOHL (LoginRsp->InitiatorTaskTag);\r | |
678 | \r | |
679 | if ((Transit && Continue) ||\r | |
680 | (CurrentStage != Conn->CurrentStage) ||\r | |
681 | (!Conn->TransitInitiated && Transit) ||\r | |
682 | (Transit && (NextStage != Conn->NextStage)) ||\r | |
a78d176c | 683 | (CompareMem (Session->Isid, LoginRsp->Isid, sizeof (LoginRsp->Isid)) != 0) ||\r |
6a690e23 | 684 | (LoginRsp->InitiatorTaskTag != Session->InitiatorTaskTag)\r |
685 | ) {\r | |
686 | //\r | |
687 | // A Login Response with the C bit set to 1 MUST have the T bit set to 0;\r | |
688 | // The CSG in the Login Response MUST be the same with the I-end of this connection;\r | |
689 | // The T bit can't be 1 if the last Login Response sent by the initiator doesn't\r | |
690 | // initiate the transistion;\r | |
691 | // The NSG MUST be the same with the I-end of this connection if Transit is required.\r | |
692 | // The ISID in the Login Response MUST be the same with this session.\r | |
693 | //\r | |
694 | return EFI_PROTOCOL_ERROR;\r | |
695 | }\r | |
696 | \r | |
697 | LoginRsp->StatSN = NTOHL (LoginRsp->StatSN);\r | |
698 | LoginRsp->ExpCmdSN = NTOHL (LoginRsp->ExpCmdSN);\r | |
699 | LoginRsp->MaxCmdSN = NTOHL (LoginRsp->MaxCmdSN);\r | |
700 | \r | |
701 | if ((Conn->CurrentStage == ISCSI_SECURITY_NEGOTIATION) && (Conn->CHAPStep == ISCSI_CHAP_INITIAL)) {\r | |
501793fa RN |
702 | //\r |
703 | // If the Login Request is a leading Login Request, the target MUST use\r | |
704 | // the value presented in CmdSN as the target value for ExpCmdSN.\r | |
705 | //\r | |
706 | if ((Session->State == SESSION_STATE_FREE) && (Session->CmdSN != LoginRsp->ExpCmdSN)) {\r | |
707 | return EFI_PROTOCOL_ERROR;\r | |
708 | }\r | |
709 | \r | |
6a690e23 | 710 | //\r |
711 | // It's the initial Login Response, initialize the local ExpStatSN, MaxCmdSN\r | |
712 | // and ExpCmdSN.\r | |
713 | //\r | |
714 | Conn->ExpStatSN = LoginRsp->StatSN + 1;\r | |
715 | Session->MaxCmdSN = LoginRsp->MaxCmdSN;\r | |
716 | Session->ExpCmdSN = LoginRsp->ExpCmdSN;\r | |
717 | } else {\r | |
718 | //\r | |
719 | // Check the StatSN of this PDU\r | |
720 | //\r | |
721 | Status = IScsiCheckSN (&Conn->ExpStatSN, LoginRsp->StatSN);\r | |
722 | if (!EFI_ERROR (Status)) {\r | |
723 | //\r | |
724 | // Update the MaxCmdSN and ExpCmdSN\r | |
725 | //\r | |
726 | IScsiUpdateCmdSN (Session, LoginRsp->MaxCmdSN, LoginRsp->ExpCmdSN);\r | |
727 | } else {\r | |
728 | return Status;\r | |
729 | }\r | |
730 | }\r | |
731 | //\r | |
732 | // Trim off the header segment.\r | |
733 | //\r | |
734 | NetbufTrim (Pdu, sizeof (ISCSI_LOGIN_RESPONSE), NET_BUF_HEAD);\r | |
735 | \r | |
736 | //\r | |
737 | // Queue this login response first in case it's a partial response so that\r | |
738 | // later when the full response list is received we can combine these scattered\r | |
739 | // responses' data segment and then process it.\r | |
740 | //\r | |
741 | NET_GET_REF (Pdu);\r | |
742 | NetbufQueAppend (&Conn->RspQue, Pdu);\r | |
743 | \r | |
744 | Conn->PartialRspRcvd = Continue;\r | |
1fd45785 | 745 | if (Continue) {\r |
6a690e23 | 746 | //\r |
747 | // It's a partial response, have to wait for another or more Request/Response\r | |
748 | // conversations to get the full response.\r | |
749 | //\r | |
750 | return EFI_SUCCESS;\r | |
751 | }\r | |
752 | \r | |
753 | switch (CurrentStage) {\r | |
754 | case ISCSI_SECURITY_NEGOTIATION:\r | |
755 | //\r | |
756 | // In security negotiation stage, let CHAP module handle it.\r | |
757 | //\r | |
c5de0d55 | 758 | Status = IScsiCHAPOnRspReceived (Conn);\r |
6a690e23 | 759 | break;\r |
760 | \r | |
761 | case ISCSI_LOGIN_OPERATIONAL_NEGOTIATION:\r | |
762 | //\r | |
763 | // Response received with negotiation resonse on iSCSI parameters, check them.\r | |
764 | //\r | |
c5de0d55 | 765 | Status = IScsiCheckOpParams (Conn);\r |
6a690e23 | 766 | break;\r |
767 | \r | |
768 | default:\r | |
769 | //\r | |
770 | // Should never get here.\r | |
771 | //\r | |
772 | Status = EFI_PROTOCOL_ERROR;\r | |
773 | break;\r | |
774 | }\r | |
775 | \r | |
776 | if (Transit && (Status == EFI_SUCCESS)) {\r | |
777 | //\r | |
778 | // Do the state transition.\r | |
779 | //\r | |
780 | Conn->CurrentStage = Conn->NextStage;\r | |
781 | \r | |
782 | if (Conn->CurrentStage == ISCSI_LOGIN_OPERATIONAL_NEGOTIATION) {\r | |
783 | Conn->NextStage = ISCSI_FULL_FEATURE_PHASE;\r | |
784 | } else {\r | |
785 | //\r | |
786 | // CurrentStage is iSCSI Full Feature, it's the Login-Final Response,\r | |
787 | // get the TSIH from the Login Response.\r | |
788 | //\r | |
a78d176c | 789 | Session->Tsih = NTOHS (LoginRsp->Tsih);\r |
6a690e23 | 790 | }\r |
791 | }\r | |
792 | //\r | |
793 | // Flush the response(s) received.\r | |
794 | //\r | |
795 | NetbufQueFlush (&Conn->RspQue);\r | |
796 | \r | |
797 | return Status;\r | |
798 | }\r | |
799 | \r | |
12618416 | 800 | /**\r |
6a690e23 | 801 | Updated the target information according the data received in the iSCSI\r |
802 | login response with an target redirection status.\r | |
803 | \r | |
c5de0d55 | 804 | @param[in, out] Session The iSCSI session.\r |
805 | @param[in] Data The data segment which should contain the\r | |
806 | TargetAddress key-value list.\r | |
807 | @param[in] Len Length of the data.\r | |
db3e605d | 808 | \r |
12618416 | 809 | @retval EFI_SUCCESS The target address is updated.\r |
12618416 | 810 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
12618416 | 811 | @retval EFI_NOT_FOUND The TargetAddress key is not found.\r |
963dbb30 | 812 | @retval Others Other errors as indicated.\r |
12618416 | 813 | **/\r |
814 | EFI_STATUS\r | |
815 | IScsiUpdateTargetAddress (\r | |
c5de0d55 | 816 | IN OUT ISCSI_SESSION *Session,\r |
817 | IN CHAR8 *Data,\r | |
818 | IN UINT32 Len\r | |
12618416 | 819 | )\r |
6a690e23 | 820 | {\r |
e48e37fc | 821 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 822 | CHAR8 *TargetAddress;\r |
823 | CHAR8 *IpStr;\r | |
824 | EFI_STATUS Status;\r | |
825 | UINTN Number;\r | |
826 | \r | |
827 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
828 | if (KeyValueList == NULL) {\r | |
829 | return EFI_OUT_OF_RESOURCES;\r | |
830 | }\r | |
831 | \r | |
832 | Status = EFI_NOT_FOUND;\r | |
833 | \r | |
834 | while (TRUE) {\r | |
835 | TargetAddress = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ADDRESS);\r | |
836 | if (TargetAddress == NULL) {\r | |
837 | break;\r | |
838 | }\r | |
839 | \r | |
840 | if (!NET_IS_DIGIT (TargetAddress[0])) {\r | |
841 | //\r | |
842 | // The domainname of the target may be presented in three formats: a DNS host name,\r | |
843 | // a dotted-decimal IPv4 address, or a bracketed IPv6 address. Only accept dotted\r | |
844 | // IPv4 address.\r | |
845 | //\r | |
846 | continue;\r | |
847 | }\r | |
848 | \r | |
849 | IpStr = TargetAddress;\r | |
850 | \r | |
db3e605d | 851 | while ((*TargetAddress != 0) && (*TargetAddress != ':') && (*TargetAddress != ',')) {\r |
6a690e23 | 852 | //\r |
853 | // NULL, ':' or ',' ends the IPv4 string.\r | |
854 | //\r | |
855 | TargetAddress++;\r | |
856 | }\r | |
857 | \r | |
858 | if (*TargetAddress == ',') {\r | |
859 | //\r | |
860 | // Comma and the portal group tag MUST be ommitted if the TargetAddress is sent\r | |
861 | // as the result of a redirection.\r | |
862 | //\r | |
863 | continue;\r | |
864 | } else if (*TargetAddress == ':') {\r | |
865 | *TargetAddress = '\0';\r | |
866 | \r | |
867 | TargetAddress++;\r | |
868 | \r | |
869 | Number = AsciiStrDecimalToUintn (TargetAddress);\r | |
870 | if (Number > 0xFFFF) {\r | |
871 | continue;\r | |
872 | } else {\r | |
873 | Session->ConfigData.NvData.TargetPort = (UINT16) Number;\r | |
874 | }\r | |
875 | } else {\r | |
876 | //\r | |
877 | // The string only contains the IPv4 address. Use the well known port.\r | |
878 | //\r | |
879 | Session->ConfigData.NvData.TargetPort = ISCSI_WELL_KNOWN_PORT;\r | |
880 | }\r | |
881 | //\r | |
882 | // Update the target IP address.\r | |
883 | //\r | |
884 | Status = IScsiAsciiStrToIp (IpStr, &Session->ConfigData.NvData.TargetIp);\r | |
885 | if (EFI_ERROR (Status)) {\r | |
886 | continue;\r | |
887 | } else {\r | |
888 | break;\r | |
889 | }\r | |
890 | }\r | |
891 | \r | |
892 | IScsiFreeKeyValueList (KeyValueList);\r | |
893 | \r | |
894 | return Status;\r | |
895 | }\r | |
896 | \r | |
12618416 | 897 | /**\r |
6a690e23 | 898 | The callback function to free the net buffer list.\r |
899 | \r | |
db3e605d | 900 | @param[in] Arg The opaque parameter.\r |
12618416 | 901 | **/\r |
902 | VOID\r | |
e798cd87 | 903 | EFIAPI\r |
12618416 | 904 | IScsiFreeNbufList (\r |
905 | VOID *Arg\r | |
906 | )\r | |
6a690e23 | 907 | {\r |
908 | ASSERT (Arg != NULL);\r | |
909 | \r | |
e48e37fc | 910 | NetbufFreeList ((LIST_ENTRY *) Arg);\r |
766c7483 | 911 | FreePool (Arg);\r |
6a690e23 | 912 | }\r |
913 | \r | |
12618416 | 914 | /**\r |
915 | The callback function called in NetBufFree, it does nothing.\r | |
916 | \r | |
db3e605d | 917 | @param[in] Arg The opaque parameter.\r |
12618416 | 918 | **/\r |
6a690e23 | 919 | VOID\r |
e798cd87 | 920 | EFIAPI\r |
6a690e23 | 921 | IScsiNbufExtFree (\r |
922 | VOID *Arg\r | |
923 | )\r | |
12618416 | 924 | {\r |
925 | }\r | |
6a690e23 | 926 | \r |
12618416 | 927 | /**\r |
928 | Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r | |
929 | an optional data segment. The two parts will be put into two blocks of buffers in the\r | |
930 | net buffer. The digest check will be conducted in this function if needed and the digests\r | |
931 | will be trimmed from the PDU buffer.\r | |
6a690e23 | 932 | \r |
db3e605d | 933 | @param[in] Conn The iSCSI connection to receive data from.\r |
934 | @param[out] Pdu The received iSCSI pdu.\r | |
935 | @param[in] Context The context used to describe information on the caller provided\r | |
12618416 | 936 | buffer to receive data segment of the iSCSI pdu, it's optional.\r |
db3e605d | 937 | @param[in] HeaderDigest Whether there will be header digest received.\r |
938 | @param[in] DataDigest Whether there will be data digest.\r | |
939 | @param[in] TimeoutEvent The timeout event, it's optional.\r | |
6a690e23 | 940 | \r |
db3e605d | 941 | @retval EFI_SUCCESS An iSCSI pdu is received.\r |
942 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
943 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
963dbb30 | 944 | @retval Others Other errors as indicated.\r |
12618416 | 945 | **/\r |
6a690e23 | 946 | EFI_STATUS\r |
947 | IScsiReceivePdu (\r | |
948 | IN ISCSI_CONNECTION *Conn,\r | |
949 | OUT NET_BUF **Pdu,\r | |
950 | IN ISCSI_IN_BUFFER_CONTEXT *Context, OPTIONAL\r | |
951 | IN BOOLEAN HeaderDigest,\r | |
952 | IN BOOLEAN DataDigest,\r | |
953 | IN EFI_EVENT TimeoutEvent OPTIONAL\r | |
954 | )\r | |
6a690e23 | 955 | {\r |
e48e37fc | 956 | LIST_ENTRY *NbufList;\r |
6a690e23 | 957 | UINT32 Len;\r |
958 | NET_BUF *PduHdr;\r | |
959 | UINT8 *Header;\r | |
960 | EFI_STATUS Status;\r | |
961 | UINT32 PadLen;\r | |
962 | UINT32 InDataOffset;\r | |
963 | NET_FRAGMENT Fragment[2];\r | |
964 | UINT32 FragmentCount;\r | |
965 | NET_BUF *DataSeg;\r | |
966 | UINT32 PadAndCRC32[2];\r | |
967 | \r | |
653ef62e | 968 | NbufList = AllocatePool (sizeof (LIST_ENTRY));\r |
6a690e23 | 969 | if (NbufList == NULL) {\r |
970 | return EFI_OUT_OF_RESOURCES;\r | |
971 | }\r | |
972 | \r | |
e48e37fc | 973 | InitializeListHead (NbufList);\r |
6a690e23 | 974 | \r |
975 | //\r | |
976 | // The header digest will be received together with the PDU header if exists.\r | |
977 | //\r | |
978 | Len = sizeof (ISCSI_BASIC_HEADER) + (HeaderDigest ? sizeof (UINT32) : 0);\r | |
979 | PduHdr = NetbufAlloc (Len);\r | |
980 | if (PduHdr == NULL) {\r | |
766c7483 | 981 | FreePool (NbufList);\r |
653ef62e | 982 | return EFI_OUT_OF_RESOURCES;\r |
6a690e23 | 983 | }\r |
984 | \r | |
985 | Header = NetbufAllocSpace (PduHdr, Len, NET_BUF_TAIL);\r | |
653ef62e | 986 | ASSERT (Header != NULL);\r |
e48e37fc | 987 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 988 | \r |
989 | //\r | |
990 | // First step, receive the BHS of the PDU.\r | |
991 | //\r | |
992 | Status = Tcp4IoReceive (&Conn->Tcp4Io, PduHdr, FALSE, TimeoutEvent);\r | |
993 | if (EFI_ERROR (Status)) {\r | |
994 | goto ON_EXIT;\r | |
995 | }\r | |
996 | \r | |
997 | if (HeaderDigest) {\r | |
998 | //\r | |
999 | // TODO: check the header-digest.\r | |
1000 | //\r | |
1001 | //\r | |
1002 | // Trim off the digest.\r | |
1003 | //\r | |
1004 | NetbufTrim (PduHdr, sizeof (UINT32), NET_BUF_TAIL);\r | |
1005 | }\r | |
1006 | \r | |
1007 | Len = ISCSI_GET_DATASEG_LEN (Header);\r | |
1008 | if (Len == 0) {\r | |
1009 | //\r | |
5af5b3fd | 1010 | // No data segment.Form the pdu from a list of pdu segments.\r |
6a690e23 | 1011 | //\r |
5af5b3fd | 1012 | *Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r |
1013 | if (*Pdu == NULL) {\r | |
1014 | Status = EFI_OUT_OF_RESOURCES;\r | |
1015 | goto ON_EXIT;\r | |
1016 | }\r | |
1017 | return Status;\r | |
6a690e23 | 1018 | }\r |
1019 | //\r | |
1020 | // Get the length of the padding bytes of the data segment.\r | |
1021 | //\r | |
1022 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1023 | \r | |
1024 | switch (ISCSI_GET_OPCODE (Header)) {\r | |
1025 | case ISCSI_OPCODE_SCSI_DATA_IN:\r | |
1026 | //\r | |
1027 | // Try to use the buffer described by Context if the PDU is an\r | |
1028 | // iSCSI SCSI data in pdu so as to reduce memory copy overhead.\r | |
1029 | //\r | |
1030 | InDataOffset = ISCSI_GET_BUFFER_OFFSET (Header);\r | |
1031 | if ((Context == NULL) || ((InDataOffset + Len) > Context->InDataLen)) {\r | |
1032 | Status = EFI_PROTOCOL_ERROR;\r | |
1033 | goto ON_EXIT;\r | |
1034 | }\r | |
1035 | \r | |
1036 | Fragment[0].Len = Len;\r | |
1037 | Fragment[0].Bulk = Context->InData + InDataOffset;\r | |
1038 | \r | |
1039 | if (DataDigest || (PadLen != 0)) {\r | |
1040 | //\r | |
1041 | // The data segment is padded, use two fragments to receive it.\r | |
1042 | // The first to receive the useful data. The second to receive the padding.\r | |
1043 | //\r | |
1044 | Fragment[1].Len = PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
82603e79 | 1045 | Fragment[1].Bulk = (UINT8 *)PadAndCRC32 + (4 - PadLen);\r |
6a690e23 | 1046 | FragmentCount = 2;\r |
1047 | } else {\r | |
1048 | FragmentCount = 1;\r | |
1049 | }\r | |
1050 | \r | |
1051 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1052 | if (DataSeg == NULL) {\r | |
1053 | Status = EFI_OUT_OF_RESOURCES;\r | |
1054 | goto ON_EXIT;\r | |
1055 | }\r | |
1056 | \r | |
1057 | break;\r | |
1058 | \r | |
1059 | case ISCSI_OPCODE_SCSI_RSP:\r | |
1060 | case ISCSI_OPCODE_NOP_IN:\r | |
1061 | case ISCSI_OPCODE_LOGIN_RSP:\r | |
1062 | case ISCSI_OPCODE_TEXT_RSP:\r | |
1063 | case ISCSI_OPCODE_ASYNC_MSG:\r | |
1064 | case ISCSI_OPCODE_REJECT:\r | |
1065 | case ISCSI_OPCODE_VENDOR_T0:\r | |
1066 | case ISCSI_OPCODE_VENDOR_T1:\r | |
1067 | case ISCSI_OPCODE_VENDOR_T2:\r | |
1068 | //\r | |
1069 | // Allocate buffer to receive the data segment.\r | |
1070 | //\r | |
1071 | Len += PadLen + (DataDigest ? sizeof (UINT32) : 0);\r | |
1072 | DataSeg = NetbufAlloc (Len);\r | |
1073 | if (DataSeg == NULL) {\r | |
1074 | Status = EFI_OUT_OF_RESOURCES;\r | |
1075 | goto ON_EXIT;\r | |
1076 | }\r | |
1077 | \r | |
1078 | NetbufAllocSpace (DataSeg, Len, NET_BUF_TAIL);\r | |
1079 | break;\r | |
1080 | \r | |
1081 | default:\r | |
1082 | Status = EFI_PROTOCOL_ERROR;\r | |
1083 | goto ON_EXIT;\r | |
1084 | }\r | |
1085 | \r | |
e48e37fc | 1086 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 1087 | \r |
1088 | //\r | |
1089 | // Receive the data segment with the data digest if any.\r | |
1090 | //\r | |
1091 | Status = Tcp4IoReceive (&Conn->Tcp4Io, DataSeg, FALSE, TimeoutEvent);\r | |
1092 | if (EFI_ERROR (Status)) {\r | |
1093 | goto ON_EXIT;\r | |
1094 | }\r | |
1095 | \r | |
1096 | if (DataDigest) {\r | |
1097 | //\r | |
1098 | // TODO: Check the data digest.\r | |
1099 | //\r | |
1100 | NetbufTrim (DataSeg, sizeof (UINT32), NET_BUF_TAIL);\r | |
1101 | }\r | |
1102 | \r | |
1103 | if (PadLen != 0) {\r | |
1104 | //\r | |
1105 | // Trim off the padding bytes in the data segment.\r | |
1106 | //\r | |
1107 | NetbufTrim (DataSeg, PadLen, NET_BUF_TAIL);\r | |
1108 | }\r | |
1109 | \r | |
6a690e23 | 1110 | //\r |
1111 | // Form the pdu from a list of pdu segments.\r | |
1112 | //\r | |
1113 | *Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1114 | if (*Pdu == NULL) {\r | |
1115 | Status = EFI_OUT_OF_RESOURCES;\r | |
1116 | }\r | |
1117 | \r | |
1118 | ON_EXIT:\r | |
1119 | \r | |
1120 | if (EFI_ERROR (Status)) {\r | |
1121 | //\r | |
1122 | // Free the Nbufs in this NbufList and the NbufList itself.\r | |
1123 | //\r | |
1124 | IScsiFreeNbufList (NbufList);\r | |
1125 | }\r | |
1126 | \r | |
1127 | return Status;\r | |
1128 | }\r | |
1129 | \r | |
12618416 | 1130 | /**\r |
6a690e23 | 1131 | Check and get the result of the prameter negotiation.\r |
1132 | \r | |
c5de0d55 | 1133 | @param[in, out] Conn The connection in iSCSI login.\r |
6a690e23 | 1134 | \r |
db3e605d | 1135 | @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.\r |
1136 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r | |
1137 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
12618416 | 1138 | **/\r |
1139 | EFI_STATUS\r | |
1140 | IScsiCheckOpParams (\r | |
c5de0d55 | 1141 | IN OUT ISCSI_CONNECTION *Conn\r |
12618416 | 1142 | )\r |
6a690e23 | 1143 | {\r |
1144 | EFI_STATUS Status;\r | |
e48e37fc | 1145 | LIST_ENTRY *KeyValueList;\r |
6a690e23 | 1146 | CHAR8 *Data;\r |
1147 | UINT32 Len;\r | |
1148 | ISCSI_SESSION *Session;\r | |
1149 | CHAR8 *Value;\r | |
1150 | UINTN NumericValue;\r | |
1151 | \r | |
1152 | ASSERT (Conn->RspQue.BufNum != 0);\r | |
1153 | \r | |
1154 | Session = Conn->Session;\r | |
1155 | \r | |
1156 | Len = Conn->RspQue.BufSize;\r | |
e48e37fc | 1157 | Data = AllocatePool (Len);\r |
6a690e23 | 1158 | if (Data == NULL) {\r |
1159 | return EFI_OUT_OF_RESOURCES;\r | |
1160 | }\r | |
1161 | \r | |
69b0882d | 1162 | NetbufQueCopy (&Conn->RspQue, 0, Len, (UINT8 *) Data);\r |
6a690e23 | 1163 | \r |
1164 | Status = EFI_PROTOCOL_ERROR;\r | |
1165 | \r | |
1166 | //\r | |
1167 | // Extract the Key-Value pairs into a list.\r | |
1168 | //\r | |
1169 | KeyValueList = IScsiBuildKeyValueList (Data, Len);\r | |
1170 | if (KeyValueList == NULL) {\r | |
766c7483 | 1171 | FreePool (Data);\r |
6a690e23 | 1172 | return Status;\r |
1173 | }\r | |
1174 | //\r | |
1175 | // HeaderDigest\r | |
1176 | //\r | |
1177 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_HEADER_DIGEST);\r | |
1178 | if (Value == NULL) {\r | |
1179 | goto ON_ERROR;\r | |
1180 | }\r | |
1181 | \r | |
1182 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
f6b7393c | 1183 | if (Conn->HeaderDigest != IScsiDigestCRC32) {\r |
6a690e23 | 1184 | goto ON_ERROR;\r |
1185 | }\r | |
1186 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
f6b7393c | 1187 | Conn->HeaderDigest = IScsiDigestNone;\r |
6a690e23 | 1188 | } else {\r |
1189 | goto ON_ERROR;\r | |
1190 | }\r | |
1191 | //\r | |
1192 | // DataDigest\r | |
1193 | //\r | |
1194 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_DIGEST);\r | |
1195 | if (Value == NULL) {\r | |
1196 | goto ON_ERROR;\r | |
1197 | }\r | |
1198 | \r | |
1199 | if (AsciiStrCmp (Value, "CRC32") == 0) {\r | |
f6b7393c | 1200 | if (Conn->DataDigest != IScsiDigestCRC32) {\r |
6a690e23 | 1201 | goto ON_ERROR;\r |
1202 | }\r | |
1203 | } else if (AsciiStrCmp (Value, ISCSI_KEY_VALUE_NONE) == 0) {\r | |
f6b7393c | 1204 | Conn->DataDigest = IScsiDigestNone;\r |
6a690e23 | 1205 | } else {\r |
1206 | goto ON_ERROR;\r | |
1207 | }\r | |
1208 | //\r | |
1209 | // ErrorRecoveryLevel, result fuction is Minimum.\r | |
1210 | //\r | |
1211 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_ERROR_RECOVERY_LEVEL);\r | |
1212 | if (Value == NULL) {\r | |
1213 | goto ON_ERROR;\r | |
1214 | }\r | |
1215 | \r | |
1216 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1217 | if (NumericValue > 2) {\r | |
1218 | goto ON_ERROR;\r | |
1219 | }\r | |
1220 | \r | |
1221 | Session->ErrorRecoveryLevel = (UINT8) MIN (Session->ErrorRecoveryLevel, NumericValue);\r | |
1222 | \r | |
1223 | //\r | |
1224 | // InitialR2T, result function is OR.\r | |
1225 | //\r | |
1226 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_INITIAL_R2T);\r | |
1227 | if (Value == NULL) {\r | |
1228 | goto ON_ERROR;\r | |
1229 | }\r | |
1230 | \r | |
69b0882d | 1231 | Session->InitialR2T = (BOOLEAN) (Session->InitialR2T || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1232 | \r |
1233 | //\r | |
1234 | // ImmediateData, result function is AND.\r | |
1235 | //\r | |
1236 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_IMMEDIATE_DATA);\r | |
1237 | if (Value == NULL) {\r | |
1238 | goto ON_ERROR;\r | |
1239 | }\r | |
1240 | \r | |
69b0882d | 1241 | Session->ImmediateData = (BOOLEAN) (Session->ImmediateData && (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1242 | \r |
1243 | //\r | |
28d19b00 | 1244 | // MaxRecvDataSegmentLength is declarative.\r |
6a690e23 | 1245 | //\r |
1246 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH);\r | |
1247 | if (Value != NULL) {\r | |
28d19b00 | 1248 | Conn->MaxRecvDataSegmentLength = (UINT32) AsciiStrDecimalToUintn (Value);\r |
6a690e23 | 1249 | }\r |
1250 | //\r | |
1251 | // MaxBurstLength, result funtion is Mininum.\r | |
1252 | //\r | |
1253 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_BURST_LENGTH);\r | |
1254 | if (Value == NULL) {\r | |
1255 | goto ON_ERROR;\r | |
1256 | }\r | |
1257 | \r | |
1258 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1259 | Session->MaxBurstLength = (UINT32) MIN (Session->MaxBurstLength, NumericValue);\r | |
1260 | \r | |
1261 | //\r | |
1262 | // FirstBurstLength, result function is Minimum. Irrelevant when InitialR2T=Yes and\r | |
1263 | // ImmediateData=No.\r | |
653ef62e | 1264 | // This Key/Value is negotiation type.\r |
6a690e23 | 1265 | //\r |
1266 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_FIRST_BURST_LENGTH);\r | |
653ef62e | 1267 | if (Value == NULL) {\r |
6a690e23 | 1268 | goto ON_ERROR;\r |
1269 | }\r | |
1270 | \r | |
1271 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1272 | Session->FirstBurstLength = (UINT32) MIN (Session->FirstBurstLength, NumericValue);\r | |
1273 | \r | |
1274 | //\r | |
1275 | // MaxConnections, result function is Minimum.\r | |
1276 | //\r | |
1277 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_CONNECTIONS);\r | |
1278 | if (Value == NULL) {\r | |
1279 | goto ON_ERROR;\r | |
1280 | }\r | |
1281 | \r | |
1282 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1283 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1284 | goto ON_ERROR;\r | |
1285 | }\r | |
1286 | \r | |
1287 | Session->MaxConnections = (UINT32) MIN (Session->MaxConnections, NumericValue);\r | |
1288 | \r | |
1289 | //\r | |
1290 | // DataPDUInOrder, result function is OR.\r | |
1291 | //\r | |
1292 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_PDU_IN_ORDER);\r | |
1293 | if (Value == NULL) {\r | |
1294 | goto ON_ERROR;\r | |
1295 | }\r | |
1296 | \r | |
69b0882d | 1297 | Session->DataPDUInOrder = (BOOLEAN) (Session->DataPDUInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1298 | \r |
1299 | //\r | |
1300 | // DataSequenceInorder, result function is OR.\r | |
1301 | //\r | |
1302 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER);\r | |
1303 | if (Value == NULL) {\r | |
1304 | goto ON_ERROR;\r | |
1305 | }\r | |
1306 | \r | |
69b0882d | 1307 | Session->DataSequenceInOrder = (BOOLEAN) (Session->DataSequenceInOrder || (AsciiStrCmp (Value, "Yes") == 0));\r |
6a690e23 | 1308 | \r |
1309 | //\r | |
1310 | // DefaultTime2Wait, result function is Maximum.\r | |
1311 | //\r | |
1312 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2WAIT);\r | |
1313 | if (Value == NULL) {\r | |
1314 | goto ON_ERROR;\r | |
1315 | }\r | |
1316 | \r | |
1317 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1318 | if (NumericValue == 0) {\r | |
1319 | Session->DefaultTime2Wait = 0;\r | |
1320 | } else if (NumericValue > 3600) {\r | |
1321 | goto ON_ERROR;\r | |
1322 | } else {\r | |
1323 | Session->DefaultTime2Wait = (UINT32) MAX (Session->DefaultTime2Wait, NumericValue);\r | |
1324 | }\r | |
1325 | //\r | |
1326 | // DefaultTime2Retain, result function is Minimum.\r | |
1327 | //\r | |
1328 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_DEFAULT_TIME2RETAIN);\r | |
1329 | if (Value == NULL) {\r | |
1330 | goto ON_ERROR;\r | |
1331 | }\r | |
1332 | \r | |
1333 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1334 | if (NumericValue == 0) {\r | |
1335 | Session->DefaultTime2Retain = 0;\r | |
1336 | } else if (NumericValue > 3600) {\r | |
1337 | goto ON_ERROR;\r | |
1338 | } else {\r | |
1339 | Session->DefaultTime2Retain = (UINT32) MIN (Session->DefaultTime2Retain, NumericValue);\r | |
1340 | }\r | |
1341 | //\r | |
1342 | // MaxOutstandingR2T, result function is Minimum.\r | |
1343 | //\r | |
1344 | Value = IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_MAX_OUTSTANDING_R2T);\r | |
1345 | if (Value == NULL) {\r | |
1346 | goto ON_ERROR;\r | |
1347 | }\r | |
1348 | \r | |
1349 | NumericValue = AsciiStrDecimalToUintn (Value);\r | |
1350 | if ((NumericValue == 0) || (NumericValue > 65535)) {\r | |
1351 | goto ON_ERROR;\r | |
1352 | }\r | |
1353 | \r | |
1354 | Session->MaxOutstandingR2T = (UINT16) MIN (Session->MaxOutstandingR2T, NumericValue);\r | |
1355 | \r | |
1356 | //\r | |
1357 | // Remove declarative key-value paris if any.\r | |
1358 | //\r | |
1359 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_SESSION_TYPE);\r | |
1360 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_ALIAS);\r | |
1361 | IScsiGetValueByKeyFromList (KeyValueList, ISCSI_KEY_TARGET_PORTAL_GROUP_TAG);\r | |
1362 | \r | |
e48e37fc | 1363 | if (IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1364 | //\r |
1365 | // Succeed if no more keys in the list.\r | |
1366 | //\r | |
1367 | Status = EFI_SUCCESS;\r | |
1368 | }\r | |
1369 | \r | |
1370 | ON_ERROR:\r | |
1371 | \r | |
1372 | IScsiFreeKeyValueList (KeyValueList);\r | |
1373 | \r | |
766c7483 | 1374 | FreePool (Data);\r |
6a690e23 | 1375 | \r |
1376 | return Status;\r | |
1377 | }\r | |
1378 | \r | |
12618416 | 1379 | /**\r |
6a690e23 | 1380 | Fill the oprational prameters.\r |
1381 | \r | |
c5de0d55 | 1382 | @param[in] Conn The connection in iSCSI login.\r |
1383 | @param[in, out] Pdu The iSCSI login request PDU to fill the parameters.\r | |
6a690e23 | 1384 | \r |
12618416 | 1385 | @retval EFI_SUCCESS The parmeters are filled into the iSCSI login request PDU.\r |
12618416 | 1386 | **/\r |
1387 | EFI_STATUS\r | |
1388 | IScsiFillOpParams (\r | |
1389 | IN ISCSI_CONNECTION *Conn,\r | |
c5de0d55 | 1390 | IN OUT NET_BUF *Pdu\r |
12618416 | 1391 | )\r |
6a690e23 | 1392 | {\r |
1393 | ISCSI_SESSION *Session;\r | |
1394 | CHAR8 Value[256];\r | |
1395 | \r | |
1396 | Session = Conn->Session;\r | |
1397 | \r | |
f6b7393c | 1398 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->HeaderDigest == IScsiDigestCRC32) ? "None,CRC32" : "None");\r |
6a690e23 | 1399 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_HEADER_DIGEST, Value);\r |
1400 | \r | |
f6b7393c | 1401 | AsciiSPrint (Value, sizeof (Value), "%a", (Conn->DataDigest == IScsiDigestCRC32) ? "None,CRC32" : "None");\r |
6a690e23 | 1402 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_DIGEST, Value);\r |
1403 | \r | |
1404 | AsciiSPrint (Value, sizeof (Value), "%d", Session->ErrorRecoveryLevel);\r | |
1405 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_ERROR_RECOVERY_LEVEL, Value);\r | |
1406 | \r | |
1407 | AsciiSPrint (Value, sizeof (Value), "%a", Session->InitialR2T ? "Yes" : "No");\r | |
1408 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_INITIAL_R2T, Value);\r | |
1409 | \r | |
1410 | AsciiSPrint (Value, sizeof (Value), "%a", Session->ImmediateData ? "Yes" : "No");\r | |
1411 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_IMMEDIATE_DATA, Value);\r | |
1412 | \r | |
20621542 | 1413 | AsciiSPrint (Value, sizeof (Value), "%d", MAX_RECV_DATA_SEG_LEN_IN_FFP);\r |
6a690e23 | 1414 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH, Value);\r |
1415 | \r | |
1416 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxBurstLength);\r | |
1417 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_BURST_LENGTH, Value);\r | |
1418 | \r | |
1419 | AsciiSPrint (Value, sizeof (Value), "%d", Session->FirstBurstLength);\r | |
1420 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_FIRST_BURST_LENGTH, Value);\r | |
1421 | \r | |
1422 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxConnections);\r | |
1423 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_CONNECTIONS, Value);\r | |
1424 | \r | |
1425 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataPDUInOrder ? "Yes" : "No");\r | |
1426 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_PDU_IN_ORDER, Value);\r | |
1427 | \r | |
1428 | AsciiSPrint (Value, sizeof (Value), "%a", Session->DataSequenceInOrder ? "Yes" : "No");\r | |
1429 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DATA_SEQUENCE_IN_ORDER, Value);\r | |
1430 | \r | |
1431 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Wait);\r | |
1432 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2WAIT, Value);\r | |
1433 | \r | |
1434 | AsciiSPrint (Value, sizeof (Value), "%d", Session->DefaultTime2Retain);\r | |
1435 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_DEFAULT_TIME2RETAIN, Value);\r | |
1436 | \r | |
1437 | AsciiSPrint (Value, sizeof (Value), "%d", Session->MaxOutstandingR2T);\r | |
1438 | IScsiAddKeyValuePair (Pdu, ISCSI_KEY_MAX_OUTSTANDING_R2T, Value);\r | |
1439 | \r | |
1440 | return EFI_SUCCESS;\r | |
1441 | }\r | |
1442 | \r | |
12618416 | 1443 | /**\r |
6a690e23 | 1444 | Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r |
1445 | \r | |
c5de0d55 | 1446 | @param[in, out] Pdu The iSCSI pdu which contains segments to pad.\r |
1447 | @param[in] Len The length of the last semgnet in the PDU.\r | |
6a690e23 | 1448 | \r |
12618416 | 1449 | @retval EFI_SUCCESS The segment is padded or no need to pad it.\r |
12618416 | 1450 | @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r |
1451 | padding bytes.\r | |
12618416 | 1452 | **/\r |
1453 | EFI_STATUS\r | |
1454 | IScsiPadSegment (\r | |
c5de0d55 | 1455 | IN OUT NET_BUF *Pdu,\r |
1456 | IN UINT32 Len\r | |
12618416 | 1457 | )\r |
6a690e23 | 1458 | {\r |
1459 | UINT32 PadLen;\r | |
1460 | UINT8 *Data;\r | |
1461 | \r | |
1462 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1463 | \r | |
1464 | if (PadLen != 0) {\r | |
1465 | Data = NetbufAllocSpace (Pdu, PadLen, NET_BUF_TAIL);\r | |
1466 | if (Data == NULL) {\r | |
1467 | return EFI_OUT_OF_RESOURCES;\r | |
1468 | }\r | |
1469 | \r | |
e48e37fc | 1470 | ZeroMem (Data, PadLen);\r |
6a690e23 | 1471 | }\r |
1472 | \r | |
1473 | return EFI_SUCCESS;\r | |
1474 | }\r | |
1475 | \r | |
12618416 | 1476 | /**\r |
6a690e23 | 1477 | Build a key-value list from the data segment.\r |
1478 | \r | |
db3e605d | 1479 | @param[in] Data The data segment containing the key-value pairs.\r |
1480 | @param[in] Len Length of the data segment.\r | |
6a690e23 | 1481 | \r |
db3e605d | 1482 | @return The key-value list.\r |
963dbb30 | 1483 | @retval NULL Other errors as indicated.\r |
12618416 | 1484 | **/\r |
1485 | LIST_ENTRY *\r | |
1486 | IScsiBuildKeyValueList (\r | |
1487 | IN CHAR8 *Data,\r | |
1488 | IN UINT32 Len\r | |
1489 | )\r | |
6a690e23 | 1490 | {\r |
e48e37fc | 1491 | LIST_ENTRY *ListHead;\r |
6a690e23 | 1492 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1493 | \r | |
653ef62e | 1494 | ListHead = AllocatePool (sizeof (LIST_ENTRY));\r |
6a690e23 | 1495 | if (ListHead == NULL) {\r |
1496 | return NULL;\r | |
1497 | }\r | |
1498 | \r | |
e48e37fc | 1499 | InitializeListHead (ListHead);\r |
6a690e23 | 1500 | \r |
1501 | while (Len > 0) {\r | |
e48e37fc | 1502 | KeyValuePair = AllocatePool (sizeof (ISCSI_KEY_VALUE_PAIR));\r |
6a690e23 | 1503 | if (KeyValuePair == NULL) {\r |
1504 | goto ON_ERROR;\r | |
1505 | }\r | |
1506 | \r | |
e48e37fc | 1507 | InitializeListHead (&KeyValuePair->List);\r |
6a690e23 | 1508 | \r |
1509 | KeyValuePair->Key = Data;\r | |
1510 | \r | |
1511 | while ((Len > 0) && (*Data != '=')) {\r | |
1512 | Len--;\r | |
1513 | Data++;\r | |
1514 | }\r | |
1515 | \r | |
1516 | if (*Data == '=') {\r | |
1517 | *Data = '\0';\r | |
1518 | \r | |
1519 | Data++;\r | |
1520 | Len--;\r | |
1521 | } else {\r | |
766c7483 | 1522 | FreePool (KeyValuePair);\r |
6a690e23 | 1523 | goto ON_ERROR;\r |
1524 | }\r | |
1525 | \r | |
1526 | KeyValuePair->Value = Data;\r | |
1527 | \r | |
e48e37fc | 1528 | InsertTailList (ListHead, &KeyValuePair->List);;\r |
6a690e23 | 1529 | \r |
1530 | Data += AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1531 | Len -= (UINT32) AsciiStrLen (KeyValuePair->Value) + 1;\r | |
1532 | }\r | |
1533 | \r | |
1534 | return ListHead;\r | |
1535 | \r | |
1536 | ON_ERROR:\r | |
1537 | \r | |
1538 | IScsiFreeKeyValueList (ListHead);\r | |
1539 | \r | |
1540 | return NULL;\r | |
1541 | }\r | |
1542 | \r | |
12618416 | 1543 | /**\r |
6a690e23 | 1544 | Get the value string by the key name from the key-value list. If found,\r |
1545 | the key-value entry will be removed from the list.\r | |
1546 | \r | |
c5de0d55 | 1547 | @param[in, out] KeyValueList The key-value list.\r |
1548 | @param[in] Key The key name to find.\r | |
6a690e23 | 1549 | \r |
db3e605d | 1550 | @return The value string.\r |
12618416 | 1551 | **/\r |
1552 | CHAR8 *\r | |
1553 | IScsiGetValueByKeyFromList (\r | |
c5de0d55 | 1554 | IN OUT LIST_ENTRY *KeyValueList,\r |
12618416 | 1555 | IN CHAR8 *Key\r |
1556 | )\r | |
6a690e23 | 1557 | {\r |
e48e37fc | 1558 | LIST_ENTRY *Entry;\r |
6a690e23 | 1559 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1560 | CHAR8 *Value;\r | |
1561 | \r | |
1562 | Value = NULL;\r | |
1563 | \r | |
1564 | NET_LIST_FOR_EACH (Entry, KeyValueList) {\r | |
1565 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1566 | \r | |
1567 | if (AsciiStrCmp (KeyValuePair->Key, Key) == 0) {\r | |
1568 | Value = KeyValuePair->Value;\r | |
1569 | \r | |
e48e37fc | 1570 | RemoveEntryList (&KeyValuePair->List);\r |
766c7483 | 1571 | FreePool (KeyValuePair);\r |
6a690e23 | 1572 | break;\r |
1573 | }\r | |
1574 | }\r | |
1575 | \r | |
1576 | return Value;\r | |
1577 | }\r | |
1578 | \r | |
12618416 | 1579 | /**\r |
1580 | Free the key-value list.\r | |
1581 | \r | |
db3e605d | 1582 | @param[in] KeyValueList The key-value list.\r |
12618416 | 1583 | **/\r |
6a690e23 | 1584 | VOID\r |
1585 | IScsiFreeKeyValueList (\r | |
e48e37fc | 1586 | IN LIST_ENTRY *KeyValueList\r |
6a690e23 | 1587 | )\r |
6a690e23 | 1588 | {\r |
e48e37fc | 1589 | LIST_ENTRY *Entry;\r |
6a690e23 | 1590 | ISCSI_KEY_VALUE_PAIR *KeyValuePair;\r |
1591 | \r | |
e48e37fc | 1592 | while (!IsListEmpty (KeyValueList)) {\r |
6a690e23 | 1593 | Entry = NetListRemoveHead (KeyValueList);\r |
1594 | KeyValuePair = NET_LIST_USER_STRUCT (Entry, ISCSI_KEY_VALUE_PAIR, List);\r | |
1595 | \r | |
766c7483 | 1596 | FreePool (KeyValuePair);\r |
6a690e23 | 1597 | }\r |
1598 | \r | |
766c7483 | 1599 | FreePool (KeyValueList);\r |
6a690e23 | 1600 | }\r |
1601 | \r | |
12618416 | 1602 | /**\r |
6a690e23 | 1603 | Normalize the iSCSI name according to RFC.\r |
1604 | \r | |
c5de0d55 | 1605 | @param[in, out] Name The iSCSI name.\r |
1606 | @param[in] Len length of the iSCSI name.\r | |
6a690e23 | 1607 | \r |
12618416 | 1608 | @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r |
12618416 | 1609 | @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r |
12618416 | 1610 | **/\r |
1611 | EFI_STATUS\r | |
1612 | IScsiNormalizeName (\r | |
c5de0d55 | 1613 | IN OUT CHAR8 *Name,\r |
1614 | IN UINTN Len\r | |
12618416 | 1615 | )\r |
6a690e23 | 1616 | {\r |
1617 | UINTN Index;\r | |
1618 | \r | |
1619 | for (Index = 0; Index < Len; Index++) {\r | |
1620 | if (NET_IS_UPPER_CASE_CHAR (Name[Index])) {\r | |
1621 | //\r | |
1622 | // Convert the upper-case characters to lower-case ones\r | |
1623 | //\r | |
69b0882d | 1624 | Name[Index] = (CHAR8) (Name[Index] - 'A' + 'a');\r |
6a690e23 | 1625 | }\r |
1626 | \r | |
1627 | if (!NET_IS_LOWER_CASE_CHAR (Name[Index]) &&\r | |
1628 | !NET_IS_DIGIT (Name[Index]) &&\r | |
1629 | (Name[Index] != '-') &&\r | |
1630 | (Name[Index] != '.') &&\r | |
1631 | (Name[Index] != ':')\r | |
1632 | ) {\r | |
1633 | //\r | |
1634 | // ASCII dash, dot, colon lower-case characters and digit characters\r | |
1635 | // are allowed.\r | |
1636 | //\r | |
1637 | return EFI_PROTOCOL_ERROR;\r | |
1638 | }\r | |
1639 | }\r | |
1640 | \r | |
e48e37fc | 1641 | if ((Len < 4) || (CompareMem (Name, "iqn.", 4) != 0)) {\r |
6a690e23 | 1642 | //\r |
1643 | // Only IQN format is accepted now.\r | |
1644 | //\r | |
1645 | return EFI_PROTOCOL_ERROR;\r | |
1646 | }\r | |
1647 | \r | |
1648 | return EFI_SUCCESS;\r | |
1649 | }\r | |
1650 | \r | |
12618416 | 1651 | /**\r |
6a690e23 | 1652 | Create an iSCSI task control block.\r |
1653 | \r | |
db3e605d | 1654 | @param[in] Conn The connection on which the task control block will be created.\r |
1655 | @param[out] Tcb The newly created task control block.\r | |
6a690e23 | 1656 | \r |
12618416 | 1657 | @retval EFI_SUCCESS The task control block is created.\r |
12618416 | 1658 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
db3e605d | 1659 | @retval EFI_NOT_READY The target can not accept new commands.\r |
12618416 | 1660 | **/\r |
1661 | EFI_STATUS\r | |
1662 | IScsiNewTcb (\r | |
1663 | IN ISCSI_CONNECTION *Conn,\r | |
1664 | OUT ISCSI_TCB **Tcb\r | |
1665 | )\r | |
6a690e23 | 1666 | {\r |
1667 | ISCSI_SESSION *Session;\r | |
1668 | ISCSI_TCB *NewTcb;\r | |
1669 | \r | |
1670 | ASSERT (Tcb != NULL);\r | |
1671 | \r | |
1672 | Session = Conn->Session;\r | |
1673 | \r | |
1674 | if (ISCSI_SEQ_GT (Session->CmdSN, Session->MaxCmdSN)) {\r | |
1675 | return EFI_NOT_READY;\r | |
1676 | }\r | |
1677 | \r | |
e48e37fc | 1678 | NewTcb = AllocateZeroPool (sizeof (ISCSI_TCB));\r |
6a690e23 | 1679 | if (NewTcb == NULL) {\r |
1680 | return EFI_OUT_OF_RESOURCES;\r | |
1681 | }\r | |
1682 | \r | |
e48e37fc | 1683 | InitializeListHead (&NewTcb->Link);\r |
6a690e23 | 1684 | \r |
1685 | NewTcb->SoFarInOrder = TRUE;\r | |
1686 | NewTcb->InitiatorTaskTag = Session->InitiatorTaskTag;\r | |
1687 | NewTcb->CmdSN = Session->CmdSN;\r | |
1688 | NewTcb->Conn = Conn;\r | |
1689 | \r | |
e48e37fc | 1690 | InsertTailList (&Session->TcbList, &NewTcb->Link);\r |
6a690e23 | 1691 | \r |
1692 | //\r | |
1693 | // Advance the initiator task tag.\r | |
1694 | //\r | |
1695 | Session->InitiatorTaskTag++;\r | |
1696 | Session->CmdSN++;\r | |
1697 | \r | |
1698 | *Tcb = NewTcb;\r | |
1699 | \r | |
1700 | return EFI_SUCCESS;\r | |
1701 | }\r | |
1702 | \r | |
12618416 | 1703 | /**\r |
6a690e23 | 1704 | Delete the tcb from the connection and destroy it.\r |
1705 | \r | |
db3e605d | 1706 | @param[in] Tcb The tcb to delete.\r |
12618416 | 1707 | **/\r |
1708 | VOID\r | |
1709 | IScsiDelTcb (\r | |
1710 | IN ISCSI_TCB *Tcb\r | |
1711 | )\r | |
6a690e23 | 1712 | {\r |
e48e37fc | 1713 | RemoveEntryList (&Tcb->Link);\r |
6a690e23 | 1714 | \r |
766c7483 | 1715 | FreePool (Tcb);\r |
6a690e23 | 1716 | }\r |
1717 | \r | |
12618416 | 1718 | /**\r |
6a690e23 | 1719 | Find the task control block by the initator task tag.\r |
1720 | \r | |
db3e605d | 1721 | @param[in] TcbList The tcb list.\r |
1722 | @param[in] InitiatorTaskTag The initiator task tag.\r | |
6a690e23 | 1723 | \r |
db3e605d | 1724 | @return The task control block found.\r |
12618416 | 1725 | **/\r |
1726 | ISCSI_TCB *\r | |
1727 | IScsiFindTcbByITT (\r | |
1728 | IN LIST_ENTRY *TcbList,\r | |
1729 | IN UINT32 InitiatorTaskTag\r | |
1730 | )\r | |
6a690e23 | 1731 | {\r |
1732 | ISCSI_TCB *Tcb;\r | |
e48e37fc | 1733 | LIST_ENTRY *Entry;\r |
6a690e23 | 1734 | \r |
1735 | Tcb = NULL;\r | |
1736 | \r | |
1737 | NET_LIST_FOR_EACH (Entry, TcbList) {\r | |
1738 | Tcb = NET_LIST_USER_STRUCT (Entry, ISCSI_TCB, Link);\r | |
1739 | \r | |
1740 | if (Tcb->InitiatorTaskTag == InitiatorTaskTag) {\r | |
1741 | break;\r | |
1742 | }\r | |
1743 | \r | |
1744 | Tcb = NULL;\r | |
1745 | }\r | |
1746 | \r | |
1747 | return Tcb;\r | |
1748 | }\r | |
1749 | \r | |
12618416 | 1750 | /**\r |
6a690e23 | 1751 | Create a data segment, pad it and calculate the CRC if needed.\r |
1752 | \r | |
db3e605d | 1753 | @param[in] Data The data to fill into the data segment.\r |
1754 | @param[in] Len Length of the data.\r | |
1755 | @param[in] DataDigest Whether to calculate CRC for this data segment.\r | |
6a690e23 | 1756 | \r |
db3e605d | 1757 | @return The net buffer wrapping the data segment.\r |
12618416 | 1758 | **/\r |
1759 | NET_BUF *\r | |
1760 | IScsiNewDataSegment (\r | |
1761 | IN UINT8 *Data,\r | |
1762 | IN UINT32 Len,\r | |
1763 | IN BOOLEAN DataDigest\r | |
1764 | )\r | |
6a690e23 | 1765 | {\r |
1766 | NET_FRAGMENT Fragment[2];\r | |
1767 | UINT32 FragmentCount;\r | |
1768 | UINT32 PadLen;\r | |
1769 | NET_BUF *DataSeg;\r | |
1770 | \r | |
1771 | Fragment[0].Len = Len;\r | |
1772 | Fragment[0].Bulk = Data;\r | |
1773 | \r | |
1774 | PadLen = ISCSI_GET_PAD_LEN (Len);\r | |
1775 | if (PadLen != 0) {\r | |
1776 | Fragment[1].Len = PadLen;\r | |
1777 | Fragment[1].Bulk = (UINT8 *) &mDataSegPad;\r | |
1778 | \r | |
1779 | FragmentCount = 2;\r | |
1780 | } else {\r | |
1781 | FragmentCount = 1;\r | |
1782 | }\r | |
1783 | \r | |
1784 | DataSeg = NetbufFromExt (&Fragment[0], FragmentCount, 0, 0, IScsiNbufExtFree, NULL);\r | |
1785 | \r | |
1786 | return DataSeg;\r | |
1787 | }\r | |
1788 | \r | |
12618416 | 1789 | /**\r |
6a690e23 | 1790 | Create a iSCSI SCSI command PDU to encapsulate the command issued\r |
1791 | by SCSI through the EXT SCSI PASS THRU Protocol.\r | |
1792 | \r | |
db3e605d | 1793 | @param[in] Packet The EXT SCSI PASS THRU request packet containing the SCSI command.\r |
1794 | @param[in] Lun The LUN.\r | |
1795 | @param[in] Tcb The tcb assocated with this SCSI command.\r | |
6a690e23 | 1796 | \r |
db3e605d | 1797 | @return The created iSCSI SCSI command PDU.\r |
963dbb30 | 1798 | @retval NULL Other errors as indicated.\r |
12618416 | 1799 | **/\r |
1800 | NET_BUF *\r | |
1801 | IScsiNewScsiCmdPdu (\r | |
1802 | IN EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r | |
1803 | IN UINT64 Lun,\r | |
1804 | IN ISCSI_TCB *Tcb\r | |
1805 | )\r | |
6a690e23 | 1806 | {\r |
e48e37fc | 1807 | LIST_ENTRY *NbufList;\r |
6a690e23 | 1808 | NET_BUF *Pdu;\r |
1809 | NET_BUF *PduHeader;\r | |
1810 | NET_BUF *DataSeg;\r | |
1811 | SCSI_COMMAND *ScsiCmd;\r | |
1812 | UINT8 AHSLength;\r | |
1813 | UINT32 Length;\r | |
1814 | ISCSI_ADDITIONAL_HEADER *Header;\r | |
1815 | ISCSI_BI_EXP_READ_DATA_LEN_AHS *BiExpReadDataLenAHS;\r | |
1816 | ISCSI_SESSION *Session;\r | |
1817 | UINT32 ImmediateDataLen;\r | |
1818 | \r | |
1819 | AHSLength = 0;\r | |
1820 | \r | |
1821 | if (Packet->DataDirection == DataBi) {\r | |
1822 | //\r | |
1823 | // Bi directional Read/Write command, the bidirectional expected\r | |
1824 | // read data length AHS is required.\r | |
1825 | //\r | |
1826 | AHSLength += sizeof (ISCSI_BI_EXP_READ_DATA_LEN_AHS);\r | |
1827 | }\r | |
1828 | \r | |
1829 | if (Packet->CdbLength > 16) {\r | |
1830 | //\r | |
1831 | // The CDB exceeds 16 bytes, an extended CDB AHS is required.\r | |
1832 | //\r | |
69b0882d | 1833 | AHSLength = (UINT8) (AHSLength + (ISCSI_ROUNDUP (Packet->CdbLength - 16) + sizeof (ISCSI_ADDITIONAL_HEADER)));\r |
6a690e23 | 1834 | }\r |
1835 | \r | |
1836 | Length = sizeof (SCSI_COMMAND) + AHSLength;\r | |
1837 | PduHeader = NetbufAlloc (Length);\r | |
1838 | if (PduHeader == NULL) {\r | |
1839 | return NULL;\r | |
1840 | }\r | |
1841 | \r | |
1842 | ScsiCmd = (SCSI_COMMAND *) NetbufAllocSpace (PduHeader, Length, NET_BUF_TAIL);\r | |
653ef62e | 1843 | if (ScsiCmd == NULL) {\r |
1844 | NetbufFree (PduHeader);\r | |
1845 | return NULL;\r | |
1846 | } \r | |
6a690e23 | 1847 | Header = (ISCSI_ADDITIONAL_HEADER *) (ScsiCmd + 1);\r |
1848 | \r | |
e48e37fc | 1849 | ZeroMem (ScsiCmd, Length);\r |
6a690e23 | 1850 | \r |
1851 | ISCSI_SET_OPCODE (ScsiCmd, ISCSI_OPCODE_SCSI_CMD, 0);\r | |
1852 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_TASK_ATTR_SIMPLE);\r | |
1853 | \r | |
1854 | //\r | |
1855 | // Set the READ/WRITE flags according to the IO type of this request.\r | |
1856 | //\r | |
1857 | switch (Packet->DataDirection) {\r | |
1858 | case DataIn:\r | |
1859 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ);\r | |
1860 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->InTransferLength);\r | |
1861 | break;\r | |
1862 | \r | |
1863 | case DataOut:\r | |
1864 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_WRITE);\r | |
1865 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1866 | break;\r | |
1867 | \r | |
1868 | case DataBi:\r | |
1869 | ISCSI_SET_FLAG (ScsiCmd, SCSI_CMD_PDU_FLAG_READ | SCSI_CMD_PDU_FLAG_WRITE);\r | |
1870 | ScsiCmd->ExpDataXferLength = NTOHL (Packet->OutTransferLength);\r | |
1871 | \r | |
1872 | //\r | |
1873 | // Fill the bidirectional expected read data length AHS.\r | |
1874 | //\r | |
1875 | BiExpReadDataLenAHS = (ISCSI_BI_EXP_READ_DATA_LEN_AHS *) Header;\r | |
1876 | Header = (ISCSI_ADDITIONAL_HEADER *) (BiExpReadDataLenAHS + 1);\r | |
1877 | \r | |
1878 | BiExpReadDataLenAHS->Length = NTOHS (5);\r | |
1879 | BiExpReadDataLenAHS->Type = ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN;\r | |
1880 | BiExpReadDataLenAHS->ExpReadDataLength = NTOHL (Packet->InTransferLength);\r | |
1881 | \r | |
1882 | break;\r | |
1883 | }\r | |
1884 | \r | |
1885 | ScsiCmd->TotalAHSLength = AHSLength;\r | |
e48e37fc | 1886 | CopyMem (ScsiCmd->Lun, &Lun, sizeof (ScsiCmd->Lun));\r |
6a690e23 | 1887 | ScsiCmd->InitiatorTaskTag = NTOHL (Tcb->InitiatorTaskTag);\r |
1888 | ScsiCmd->CmdSN = NTOHL (Tcb->CmdSN);\r | |
1889 | ScsiCmd->ExpStatSN = NTOHL (Tcb->Conn->ExpStatSN);\r | |
1890 | \r | |
f6b7393c | 1891 | CopyMem (ScsiCmd->Cdb, Packet->Cdb, sizeof (ScsiCmd->Cdb));\r |
6a690e23 | 1892 | \r |
1893 | if (Packet->CdbLength > 16) {\r | |
1204fe83 | 1894 | Header->Length = NTOHS ((UINT16) (Packet->CdbLength - 15));\r |
6a690e23 | 1895 | Header->Type = ISCSI_AHS_TYPE_EXT_CDB;\r |
1896 | \r | |
e48e37fc | 1897 | CopyMem (Header + 1, (UINT8 *) Packet->Cdb + 16, Packet->CdbLength - 16);\r |
6a690e23 | 1898 | }\r |
1899 | \r | |
1900 | Pdu = PduHeader;\r | |
1901 | Session = Tcb->Conn->Session;\r | |
1902 | ImmediateDataLen = 0;\r | |
1903 | \r | |
1904 | if (Session->ImmediateData && (Packet->OutTransferLength != 0)) {\r | |
1905 | //\r | |
1906 | // Send immediate data in this SCSI Command PDU. The length of the immeidate\r | |
1907 | // data is the minimum of FirstBurstLength, the data length to be xfered and\r | |
1908 | // the MaxRecvdataSegmentLength on this connection.\r | |
1909 | //\r | |
1910 | ImmediateDataLen = MIN (Session->FirstBurstLength, Packet->OutTransferLength);\r | |
1911 | ImmediateDataLen = MIN (ImmediateDataLen, Tcb->Conn->MaxRecvDataSegmentLength);\r | |
1912 | \r | |
1913 | //\r | |
1914 | // Update the data segment length in the PDU header.\r | |
1915 | //\r | |
1916 | ISCSI_SET_DATASEG_LEN (ScsiCmd, ImmediateDataLen);\r | |
1917 | \r | |
1918 | //\r | |
1919 | // Create the data segment.\r | |
1920 | //\r | |
1921 | DataSeg = IScsiNewDataSegment ((UINT8 *) Packet->OutDataBuffer, ImmediateDataLen, FALSE);\r | |
1922 | if (DataSeg == NULL) {\r | |
1923 | NetbufFree (PduHeader);\r | |
1924 | Pdu = NULL;\r | |
1925 | goto ON_EXIT;\r | |
1926 | }\r | |
1927 | \r | |
653ef62e | 1928 | NbufList = AllocatePool (sizeof (LIST_ENTRY));\r |
6a690e23 | 1929 | if (NbufList == NULL) {\r |
1930 | NetbufFree (PduHeader);\r | |
1931 | NetbufFree (DataSeg);\r | |
1932 | \r | |
1933 | Pdu = NULL;\r | |
1934 | goto ON_EXIT;\r | |
1935 | }\r | |
1936 | \r | |
e48e37fc | 1937 | InitializeListHead (NbufList);\r |
1938 | InsertTailList (NbufList, &PduHeader->List);\r | |
1939 | InsertTailList (NbufList, &DataSeg->List);\r | |
6a690e23 | 1940 | \r |
1941 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r | |
1942 | if (Pdu == NULL) {\r | |
1943 | IScsiFreeNbufList (NbufList);\r | |
1944 | }\r | |
1945 | }\r | |
1946 | \r | |
1947 | if (Session->InitialR2T ||\r | |
1948 | (ImmediateDataLen == Session->FirstBurstLength) ||\r | |
1949 | (ImmediateDataLen == Packet->OutTransferLength)\r | |
1950 | ) {\r | |
1951 | //\r | |
1952 | // Unsolicited data out sequence is not allowed,\r | |
653ef62e | 1953 | // or FirstBurstLength data is already sent out by immediate data\r |
6a690e23 | 1954 | // or all the OUT data accompany this SCSI packet is sent as\r |
1955 | // immediate data, the final flag should be set on this SCSI Command\r | |
1956 | // PDU.\r | |
1957 | //\r | |
1958 | ISCSI_SET_FLAG (ScsiCmd, ISCSI_BHS_FLAG_FINAL);\r | |
1959 | }\r | |
1960 | \r | |
1961 | ON_EXIT:\r | |
1962 | \r | |
1963 | return Pdu;\r | |
1964 | }\r | |
1965 | \r | |
12618416 | 1966 | /**\r |
1967 | Create a new iSCSI SCSI Data Out PDU.\r | |
1968 | \r | |
db3e605d | 1969 | @param[in] Data The data to put into the Data Out PDU.\r |
1970 | @param[in] Len Length of the data.\r | |
1971 | @param[in] DataSN The DataSN of the Data Out PDU.\r | |
1972 | @param[in] Tcb The task control block of this Data Out PDU.\r | |
1973 | @param[in] Lun The LUN.\r | |
12618416 | 1974 | \r |
db3e605d | 1975 | @return The net buffer wrapping the Data Out PDU.\r |
963dbb30 | 1976 | @retval NULL Other errors as indicated.\r |
12618416 | 1977 | **/\r |
6a690e23 | 1978 | NET_BUF *\r |
1979 | IScsiNewDataOutPdu (\r | |
1980 | IN UINT8 *Data,\r | |
1981 | IN UINT32 Len,\r | |
1982 | IN UINT32 DataSN,\r | |
1983 | IN ISCSI_TCB *Tcb,\r | |
1984 | IN UINT64 Lun\r | |
1985 | )\r | |
6a690e23 | 1986 | {\r |
e48e37fc | 1987 | LIST_ENTRY *NbufList;\r |
6a690e23 | 1988 | NET_BUF *PduHdr;\r |
1989 | NET_BUF *DataSeg;\r | |
1990 | NET_BUF *Pdu;\r | |
1991 | ISCSI_SCSI_DATA_OUT *DataOutHdr;\r | |
1992 | ISCSI_XFER_CONTEXT *XferContext;\r | |
1993 | \r | |
653ef62e | 1994 | NbufList = AllocatePool (sizeof (LIST_ENTRY));\r |
6a690e23 | 1995 | if (NbufList == NULL) {\r |
1996 | return NULL;\r | |
1997 | }\r | |
1998 | \r | |
e48e37fc | 1999 | InitializeListHead (NbufList);\r |
6a690e23 | 2000 | \r |
2001 | //\r | |
2002 | // Allocate memory for the BHS.\r | |
2003 | //\r | |
2004 | PduHdr = NetbufAlloc (sizeof (ISCSI_SCSI_DATA_OUT));\r | |
2005 | if (PduHdr == NULL) {\r | |
766c7483 | 2006 | FreePool (NbufList);\r |
6a690e23 | 2007 | return NULL;\r |
2008 | }\r | |
2009 | //\r | |
2010 | // Insert the BHS into the buffer list.\r | |
2011 | //\r | |
e48e37fc | 2012 | InsertTailList (NbufList, &PduHdr->List);\r |
6a690e23 | 2013 | \r |
2014 | DataOutHdr = (ISCSI_SCSI_DATA_OUT *) NetbufAllocSpace (PduHdr, sizeof (ISCSI_SCSI_DATA_OUT), NET_BUF_TAIL);\r | |
653ef62e | 2015 | ASSERT (DataOutHdr != NULL);\r |
6a690e23 | 2016 | XferContext = &Tcb->XferContext;\r |
2017 | \r | |
e48e37fc | 2018 | ZeroMem (DataOutHdr, sizeof (ISCSI_SCSI_DATA_OUT));\r |
6a690e23 | 2019 | \r |
2020 | //\r | |
2021 | // Set the flags and fields of the Data Out PDU BHS.\r | |
2022 | //\r | |
2023 | ISCSI_SET_OPCODE (DataOutHdr, ISCSI_OPCODE_SCSI_DATA_OUT, 0);\r | |
2024 | ISCSI_SET_DATASEG_LEN (DataOutHdr, Len);\r | |
2025 | \r | |
2026 | DataOutHdr->InitiatorTaskTag = HTONL (Tcb->InitiatorTaskTag);\r | |
2027 | DataOutHdr->TargetTransferTag = HTONL (XferContext->TargetTransferTag);\r | |
2028 | DataOutHdr->ExpStatSN = HTONL (Tcb->Conn->ExpStatSN);\r | |
2029 | DataOutHdr->DataSN = HTONL (DataSN);\r | |
2030 | DataOutHdr->BufferOffset = HTONL (XferContext->Offset);\r | |
2031 | \r | |
2032 | if (XferContext->TargetTransferTag != ISCSI_RESERVED_TAG) {\r | |
e48e37fc | 2033 | CopyMem (&DataOutHdr->Lun, &Lun, sizeof (DataOutHdr->Lun));\r |
6a690e23 | 2034 | }\r |
2035 | //\r | |
2036 | // Build the data segment for this Data Out PDU.\r | |
2037 | //\r | |
2038 | DataSeg = IScsiNewDataSegment (Data, Len, FALSE);\r | |
2039 | if (DataSeg == NULL) {\r | |
2040 | IScsiFreeNbufList (NbufList);\r | |
2041 | return NULL;\r | |
2042 | }\r | |
2043 | //\r | |
2044 | // Put the data segment into the buffer list and combine it with the BHS\r | |
2045 | // into a full Data Out PDU.\r | |
2046 | //\r | |
e48e37fc | 2047 | InsertTailList (NbufList, &DataSeg->List);\r |
6a690e23 | 2048 | Pdu = NetbufFromBufList (NbufList, 0, 0, IScsiFreeNbufList, NbufList);\r |
2049 | if (Pdu == NULL) {\r | |
2050 | IScsiFreeNbufList (NbufList);\r | |
2051 | }\r | |
2052 | \r | |
2053 | return Pdu;\r | |
2054 | }\r | |
2055 | \r | |
12618416 | 2056 | /**\r |
6a690e23 | 2057 | Generate a consecutive sequence of iSCSI SCSI Data Out PDUs.\r |
2058 | \r | |
db3e605d | 2059 | @param[in] Data The data which will be carried by the sequence of iSCSI SCSI Data Out PDUs.\r |
2060 | @param[in] Tcb The task control block of the data to send out.\r | |
2061 | @param[in] Lun The LUN the data will be sent to.\r | |
6a690e23 | 2062 | \r |
db3e605d | 2063 | @return A list of net buffers with each of them wraps an iSCSI SCSI Data Out PDU.\r |
963dbb30 | 2064 | @retval NULL Other errors as indicated.\r |
12618416 | 2065 | **/\r |
2066 | LIST_ENTRY *\r | |
2067 | IScsiGenerateDataOutPduSequence (\r | |
2068 | IN UINT8 *Data,\r | |
2069 | IN ISCSI_TCB *Tcb,\r | |
2070 | IN UINT64 Lun\r | |
2071 | )\r | |
6a690e23 | 2072 | {\r |
e48e37fc | 2073 | LIST_ENTRY *PduList;\r |
6a690e23 | 2074 | UINT32 DataSN;\r |
2075 | UINT32 DataLen;\r | |
2076 | NET_BUF *DataOutPdu;\r | |
2077 | ISCSI_CONNECTION *Conn;\r | |
2078 | ISCSI_XFER_CONTEXT *XferContext;\r | |
f3b4867f | 2079 | UINT8 *DataOutPacket;\r |
6a690e23 | 2080 | \r |
653ef62e | 2081 | PduList = AllocatePool (sizeof (LIST_ENTRY));\r |
6a690e23 | 2082 | if (PduList == NULL) {\r |
2083 | return NULL;\r | |
2084 | }\r | |
2085 | \r | |
e48e37fc | 2086 | InitializeListHead (PduList);\r |
6a690e23 | 2087 | \r |
2088 | DataSN = 0;\r | |
2089 | Conn = Tcb->Conn;\r | |
2090 | DataOutPdu = NULL;\r | |
2091 | XferContext = &Tcb->XferContext;\r | |
2092 | \r | |
2093 | while (XferContext->DesiredLength > 0) {\r | |
2094 | //\r | |
2095 | // Determine the length of data this Data Out PDU can carry.\r | |
2096 | //\r | |
2097 | DataLen = MIN (XferContext->DesiredLength, Conn->MaxRecvDataSegmentLength);\r | |
6a690e23 | 2098 | \r |
2099 | //\r | |
2100 | // Create a Data Out PDU.\r | |
2101 | //\r | |
2102 | DataOutPdu = IScsiNewDataOutPdu (Data, DataLen, DataSN, Tcb, Lun);\r | |
2103 | if (DataOutPdu == NULL) {\r | |
2104 | IScsiFreeNbufList (PduList);\r | |
2105 | PduList = NULL;\r | |
2106 | \r | |
2107 | goto ON_EXIT;\r | |
2108 | }\r | |
2109 | \r | |
e48e37fc | 2110 | InsertTailList (PduList, &DataOutPdu->List);\r |
6a690e23 | 2111 | \r |
2112 | //\r | |
2113 | // Update the context and DataSN.\r | |
2114 | //\r | |
2115 | XferContext->Offset += DataLen;\r | |
2116 | XferContext->DesiredLength -= DataLen;\r | |
2117 | DataSN++;\r | |
e92d66f2 | 2118 | Data += DataLen;\r |
6a690e23 | 2119 | }\r |
2120 | //\r | |
2121 | // Set the F bit for the last data out PDU in this sequence.\r | |
2122 | //\r | |
f3b4867f ED |
2123 | DataOutPacket = NetbufGetByte (DataOutPdu, 0, NULL);\r |
2124 | if (DataOutPacket == NULL) {\r | |
2125 | IScsiFreeNbufList (PduList);\r | |
2126 | PduList = NULL;\r | |
2127 | goto ON_EXIT;\r | |
2128 | }\r | |
2129 | \r | |
2130 | ISCSI_SET_FLAG (DataOutPacket, ISCSI_BHS_FLAG_FINAL);\r | |
6a690e23 | 2131 | \r |
2132 | ON_EXIT:\r | |
2133 | \r | |
2134 | return PduList;\r | |
2135 | }\r | |
2136 | \r | |
12618416 | 2137 | /**\r |
6a690e23 | 2138 | Send the Data in a sequence of Data Out PDUs one by one.\r |
2139 | \r | |
db3e605d | 2140 | @param[in] Data The data to carry by Data Out PDUs.\r |
2141 | @param[in] Lun The LUN the data will be sent to.\r | |
2142 | @param[in] Tcb The task control block.\r | |
6a690e23 | 2143 | \r |
12618416 | 2144 | @retval EFI_SUCCES The data is sent out to the LUN.\r |
12618416 | 2145 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
963dbb30 | 2146 | @retval Others Other errors as indicated.\r |
12618416 | 2147 | **/\r |
2148 | EFI_STATUS\r | |
2149 | IScsiSendDataOutPduSequence (\r | |
2150 | IN UINT8 *Data,\r | |
2151 | IN UINT64 Lun,\r | |
2152 | IN ISCSI_TCB *Tcb\r | |
2153 | )\r | |
6a690e23 | 2154 | {\r |
e48e37fc | 2155 | LIST_ENTRY *DataOutPduList;\r |
2156 | LIST_ENTRY *Entry;\r | |
6a690e23 | 2157 | NET_BUF *Pdu;\r |
2158 | EFI_STATUS Status;\r | |
2159 | \r | |
2160 | //\r | |
2161 | // Generate the Data Out PDU sequence.\r | |
2162 | //\r | |
2163 | DataOutPduList = IScsiGenerateDataOutPduSequence (Data, Tcb, Lun);\r | |
2164 | if (DataOutPduList == NULL) {\r | |
2165 | return EFI_OUT_OF_RESOURCES;\r | |
2166 | }\r | |
2167 | \r | |
2168 | Status = EFI_SUCCESS;\r | |
2169 | \r | |
2170 | //\r | |
2171 | // Send the Data Out PDU's one by one.\r | |
2172 | //\r | |
2173 | NET_LIST_FOR_EACH (Entry, DataOutPduList) {\r | |
2174 | Pdu = NET_LIST_USER_STRUCT (Entry, NET_BUF, List);\r | |
2175 | \r | |
2176 | Status = Tcp4IoTransmit (&Tcb->Conn->Tcp4Io, Pdu);\r | |
2177 | if (EFI_ERROR (Status)) {\r | |
2178 | break;\r | |
2179 | }\r | |
2180 | }\r | |
2181 | \r | |
2182 | IScsiFreeNbufList (DataOutPduList);\r | |
2183 | \r | |
2184 | return Status;\r | |
2185 | }\r | |
2186 | \r | |
12618416 | 2187 | /**\r |
6a690e23 | 2188 | Process the received iSCSI SCSI Data In PDU.\r |
2189 | \r | |
db3e605d | 2190 | @param[in] Pdu The Data In PDU received.\r |
2191 | @param[in] Tcb The task control block.\r | |
2192 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2193 | \r |
db3e605d | 2194 | @retval EFI_SUCCES The check on the Data IN PDU is passed and some update\r |
2195 | actions are taken.\r | |
2196 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r | |
2197 | @retval EFI_BAD_BUFFER_SIZEE The buffer was not the proper size for the request.\r | |
963dbb30 | 2198 | @retval Others Other errors as indicated.\r |
12618416 | 2199 | **/\r |
2200 | EFI_STATUS\r | |
2201 | IScsiOnDataInRcvd (\r | |
2202 | IN NET_BUF *Pdu,\r | |
2203 | IN ISCSI_TCB *Tcb,\r | |
2204 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2205 | )\r | |
6a690e23 | 2206 | {\r |
2207 | ISCSI_SCSI_DATA_IN *DataInHdr;\r | |
2208 | EFI_STATUS Status;\r | |
2209 | \r | |
2210 | DataInHdr = (ISCSI_SCSI_DATA_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
2211 | if (DataInHdr == NULL) {\r |
2212 | return EFI_PROTOCOL_ERROR;\r | |
2213 | }\r | |
6a690e23 | 2214 | \r |
2215 | DataInHdr->InitiatorTaskTag = NTOHL (DataInHdr->InitiatorTaskTag);\r | |
2216 | DataInHdr->ExpCmdSN = NTOHL (DataInHdr->ExpCmdSN);\r | |
2217 | DataInHdr->MaxCmdSN = NTOHL (DataInHdr->MaxCmdSN);\r | |
2218 | DataInHdr->DataSN = NTOHL (DataInHdr->DataSN);\r | |
2219 | \r | |
2220 | //\r | |
2221 | // Check the DataSN.\r | |
2222 | //\r | |
2223 | Status = IScsiCheckSN (&Tcb->ExpDataSN, DataInHdr->DataSN);\r | |
2224 | if (EFI_ERROR (Status)) {\r | |
2225 | return Status;\r | |
2226 | }\r | |
2227 | \r | |
2228 | if (DataInHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2229 | return EFI_PROTOCOL_ERROR;\r | |
2230 | }\r | |
2231 | //\r | |
2232 | // Update the command related sequence numbers.\r | |
2233 | //\r | |
2234 | IScsiUpdateCmdSN (Tcb->Conn->Session, DataInHdr->MaxCmdSN, DataInHdr->ExpCmdSN);\r | |
2235 | \r | |
2236 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_STATUS_VALID)) {\r | |
2237 | if (!ISCSI_FLAG_ON (DataInHdr, ISCSI_BHS_FLAG_FINAL)) {\r | |
2238 | //\r | |
2239 | // The S bit is on but the F bit is off.\r | |
2240 | //\r | |
2241 | return EFI_PROTOCOL_ERROR;\r | |
2242 | }\r | |
2243 | \r | |
2244 | Tcb->StatusXferd = TRUE;\r | |
2245 | \r | |
2246 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_DATA_IN_PDU_FLAG_OVERFLOW | SCSI_DATA_IN_PDU_FLAG_UNDERFLOW)) {\r | |
2247 | //\r | |
2248 | // Underflow and Overflow are mutual flags.\r | |
2249 | //\r | |
2250 | return EFI_PROTOCOL_ERROR;\r | |
2251 | }\r | |
2252 | //\r | |
2253 | // S bit is on, the StatSN is valid.\r | |
2254 | //\r | |
2255 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NTOHL (DataInHdr->StatSN));\r | |
2256 | if (EFI_ERROR (Status)) {\r | |
2257 | return Status;\r | |
2258 | }\r | |
2259 | \r | |
2260 | Packet->HostAdapterStatus = 0;\r | |
2261 | Packet->TargetStatus = DataInHdr->Status;\r | |
2262 | \r | |
2263 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2264 | Packet->InTransferLength += NTOHL (DataInHdr->ResidualCount);\r | |
2265 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2266 | }\r | |
2267 | \r | |
2268 | if (ISCSI_FLAG_ON (DataInHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2269 | Packet->InTransferLength -= NTOHL (DataInHdr->ResidualCount);\r | |
2270 | }\r | |
2271 | }\r | |
2272 | \r | |
2273 | return Status;\r | |
2274 | }\r | |
2275 | \r | |
12618416 | 2276 | /**\r |
2277 | Process the received iSCSI R2T PDU.\r | |
6a690e23 | 2278 | \r |
db3e605d | 2279 | @param[in] Pdu The R2T PDU received.\r |
2280 | @param[in] Tcb The task control block.\r | |
2281 | @param[in] Lun The Lun.\r | |
2282 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2283 | \r |
12618416 | 2284 | @retval EFI_SUCCES The R2T PDU is valid and the solicited data is sent out.\r |
12618416 | 2285 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
963dbb30 | 2286 | @retval Others Other errors as indicated.\r |
12618416 | 2287 | **/\r |
2288 | EFI_STATUS\r | |
2289 | IScsiOnR2TRcvd (\r | |
2290 | IN NET_BUF *Pdu,\r | |
2291 | IN ISCSI_TCB *Tcb,\r | |
2292 | IN UINT64 Lun,\r | |
2293 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2294 | )\r | |
6a690e23 | 2295 | {\r |
2296 | ISCSI_READY_TO_TRANSFER *R2THdr;\r | |
2297 | EFI_STATUS Status;\r | |
2298 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2299 | UINT8 *Data;\r | |
2300 | \r | |
2301 | R2THdr = (ISCSI_READY_TO_TRANSFER *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
2302 | if (R2THdr == NULL) {\r |
2303 | return EFI_PROTOCOL_ERROR;\r | |
2304 | }\r | |
6a690e23 | 2305 | \r |
2306 | R2THdr->InitiatorTaskTag = NTOHL (R2THdr->InitiatorTaskTag);\r | |
2307 | R2THdr->TargetTransferTag = NTOHL (R2THdr->TargetTransferTag);\r | |
2308 | R2THdr->StatSN = NTOHL (R2THdr->StatSN);\r | |
f6b7393c | 2309 | R2THdr->R2TSeqNum = NTOHL (R2THdr->R2TSeqNum);\r |
6a690e23 | 2310 | R2THdr->BufferOffset = NTOHL (R2THdr->BufferOffset);\r |
2311 | R2THdr->DesiredDataTransferLength = NTOHL (R2THdr->DesiredDataTransferLength);\r | |
2312 | \r | |
2313 | if ((R2THdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) || !ISCSI_SEQ_EQ (R2THdr->StatSN, Tcb->Conn->ExpStatSN)) {\r | |
2314 | return EFI_PROTOCOL_ERROR;;\r | |
2315 | }\r | |
2316 | //\r | |
2317 | // Check the sequence number.\r | |
2318 | //\r | |
f6b7393c | 2319 | Status = IScsiCheckSN (&Tcb->ExpDataSN, R2THdr->R2TSeqNum);\r |
6a690e23 | 2320 | if (EFI_ERROR (Status)) {\r |
2321 | return Status;\r | |
2322 | }\r | |
2323 | \r | |
2324 | XferContext = &Tcb->XferContext;\r | |
2325 | XferContext->TargetTransferTag = R2THdr->TargetTransferTag;\r | |
2326 | XferContext->Offset = R2THdr->BufferOffset;\r | |
2327 | XferContext->DesiredLength = R2THdr->DesiredDataTransferLength;\r | |
2328 | \r | |
2329 | if (((XferContext->Offset + XferContext->DesiredLength) > Packet->OutTransferLength) ||\r | |
2330 | (XferContext->DesiredLength > Tcb->Conn->Session->MaxBurstLength)\r | |
2331 | ) {\r | |
2332 | return EFI_PROTOCOL_ERROR;\r | |
2333 | }\r | |
2334 | //\r | |
2335 | // Send the data solicited by this R2T.\r | |
2336 | //\r | |
2337 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2338 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2339 | \r | |
2340 | return Status;\r | |
2341 | }\r | |
2342 | \r | |
12618416 | 2343 | /**\r |
6a690e23 | 2344 | Process the received iSCSI SCSI Response PDU.\r |
2345 | \r | |
db3e605d | 2346 | @param[in] Pdu The Response PDU received.\r |
2347 | @param[in] Tcb The task control block.\r | |
2348 | @param[in, out] Packet The EXT SCSI PASS THRU request packet.\r | |
6a690e23 | 2349 | \r |
12618416 | 2350 | @retval EFI_SUCCES The Response PDU is processed.\r |
12618416 | 2351 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
db3e605d | 2352 | @retval EFI_BAD_BUFFER_SIZEE The buffer was not the proper size for the request.\r |
963dbb30 | 2353 | @retval Others Other errors as indicated.\r |
12618416 | 2354 | **/\r |
2355 | EFI_STATUS\r | |
2356 | IScsiOnScsiRspRcvd (\r | |
2357 | IN NET_BUF *Pdu,\r | |
2358 | IN ISCSI_TCB *Tcb,\r | |
2359 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2360 | )\r | |
6a690e23 | 2361 | {\r |
2362 | SCSI_RESPONSE *ScsiRspHdr;\r | |
2363 | ISCSI_SENSE_DATA *SenseData;\r | |
2364 | EFI_STATUS Status;\r | |
2365 | UINT32 DataSegLen;\r | |
2366 | \r | |
2367 | ScsiRspHdr = (SCSI_RESPONSE *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
2368 | if (ScsiRspHdr == NULL) {\r |
2369 | return EFI_PROTOCOL_ERROR;\r | |
2370 | }\r | |
6a690e23 | 2371 | \r |
2372 | ScsiRspHdr->InitiatorTaskTag = NTOHL (ScsiRspHdr->InitiatorTaskTag);\r | |
2373 | if (ScsiRspHdr->InitiatorTaskTag != Tcb->InitiatorTaskTag) {\r | |
2374 | return EFI_PROTOCOL_ERROR;\r | |
2375 | }\r | |
2376 | \r | |
2377 | ScsiRspHdr->StatSN = NTOHL (ScsiRspHdr->StatSN);\r | |
2378 | \r | |
2379 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, ScsiRspHdr->StatSN);\r | |
2380 | if (EFI_ERROR (Status)) {\r | |
2381 | return Status;\r | |
2382 | }\r | |
2383 | \r | |
2384 | ScsiRspHdr->MaxCmdSN = NTOHL (ScsiRspHdr->MaxCmdSN);\r | |
2385 | ScsiRspHdr->ExpCmdSN = NTOHL (ScsiRspHdr->ExpCmdSN);\r | |
2386 | IScsiUpdateCmdSN (Tcb->Conn->Session, ScsiRspHdr->MaxCmdSN, ScsiRspHdr->ExpCmdSN);\r | |
2387 | \r | |
2388 | Tcb->StatusXferd = TRUE;\r | |
2389 | \r | |
2390 | Packet->HostAdapterStatus = ScsiRspHdr->Response;\r | |
2391 | if (Packet->HostAdapterStatus != ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET) {\r | |
2392 | return EFI_SUCCESS;\r | |
2393 | }\r | |
2394 | \r | |
2395 | Packet->TargetStatus = ScsiRspHdr->Status;\r | |
2396 | \r | |
2397 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW | SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW) ||\r | |
2398 | ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW | SCSI_RSP_PDU_FLAG_UNDERFLOW)\r | |
2399 | ) {\r | |
2400 | return EFI_PROTOCOL_ERROR;\r | |
2401 | }\r | |
2402 | \r | |
2403 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW)) {\r | |
2404 | Packet->InTransferLength += NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2405 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2406 | }\r | |
2407 | \r | |
2408 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW)) {\r | |
2409 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->BiReadResidualCount);\r | |
2410 | }\r | |
2411 | \r | |
2412 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_OVERFLOW)) {\r | |
2413 | if (Packet->DataDirection == DataIn) {\r | |
2414 | Packet->InTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2415 | } else {\r | |
2416 | Packet->OutTransferLength += NTOHL (ScsiRspHdr->ResidualCount);\r | |
2417 | }\r | |
2418 | \r | |
2419 | Status = EFI_BAD_BUFFER_SIZE;\r | |
2420 | }\r | |
2421 | \r | |
2422 | if (ISCSI_FLAG_ON (ScsiRspHdr, SCSI_RSP_PDU_FLAG_UNDERFLOW)) {\r | |
2423 | if (Packet->DataDirection == DataIn) {\r | |
2424 | Packet->InTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2425 | } else {\r | |
2426 | Packet->OutTransferLength -= NTOHL (ScsiRspHdr->ResidualCount);\r | |
2427 | }\r | |
2428 | }\r | |
2429 | \r | |
2430 | DataSegLen = ISCSI_GET_DATASEG_LEN (ScsiRspHdr);\r | |
2431 | if (DataSegLen != 0) {\r | |
2432 | SenseData = (ISCSI_SENSE_DATA *) NetbufGetByte (Pdu, sizeof (SCSI_RESPONSE), NULL);\r | |
f3b4867f ED |
2433 | if (SenseData == NULL) {\r |
2434 | return EFI_PROTOCOL_ERROR;\r | |
2435 | }\r | |
6a690e23 | 2436 | \r |
2437 | SenseData->Length = NTOHS (SenseData->Length);\r | |
2438 | \r | |
2439 | Packet->SenseDataLength = (UINT8) MIN (SenseData->Length, Packet->SenseDataLength);\r | |
2440 | if (Packet->SenseDataLength != 0) {\r | |
e48e37fc | 2441 | CopyMem (Packet->SenseData, &SenseData->Data[0], Packet->SenseDataLength);\r |
6a690e23 | 2442 | }\r |
2443 | } else {\r | |
2444 | Packet->SenseDataLength = 0;\r | |
2445 | }\r | |
2446 | \r | |
2447 | return Status;\r | |
2448 | }\r | |
2449 | \r | |
12618416 | 2450 | /**\r |
6a690e23 | 2451 | Process the received NOP In PDU.\r |
2452 | \r | |
db3e605d | 2453 | @param[in] Pdu The NOP In PDU received.\r |
2454 | @param[in] Tcb The task control block.\r | |
6a690e23 | 2455 | \r |
12618416 | 2456 | @retval EFI_SUCCES The NOP In PDU is processed and the related sequence\r |
2457 | numbers are updated.\r | |
12618416 | 2458 | @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol errror happened.\r |
12618416 | 2459 | **/\r |
2460 | EFI_STATUS\r | |
2461 | IScsiOnNopInRcvd (\r | |
2462 | IN NET_BUF *Pdu,\r | |
2463 | IN ISCSI_TCB *Tcb\r | |
2464 | )\r | |
6a690e23 | 2465 | {\r |
2466 | ISCSI_NOP_IN *NopInHdr;\r | |
2467 | EFI_STATUS Status;\r | |
2468 | \r | |
2469 | NopInHdr = (ISCSI_NOP_IN *) NetbufGetByte (Pdu, 0, NULL);\r | |
f3b4867f ED |
2470 | if (NopInHdr == NULL) {\r |
2471 | return EFI_PROTOCOL_ERROR;\r | |
2472 | }\r | |
6a690e23 | 2473 | \r |
2474 | NopInHdr->StatSN = NTOHL (NopInHdr->StatSN);\r | |
2475 | NopInHdr->ExpCmdSN = NTOHL (NopInHdr->ExpCmdSN);\r | |
2476 | NopInHdr->MaxCmdSN = NTOHL (NopInHdr->MaxCmdSN);\r | |
2477 | \r | |
2478 | if (NopInHdr->InitiatorTaskTag == ISCSI_RESERVED_TAG) {\r | |
2479 | if (NopInHdr->StatSN != Tcb->Conn->ExpStatSN) {\r | |
2480 | return EFI_PROTOCOL_ERROR;\r | |
2481 | }\r | |
2482 | } else {\r | |
2483 | Status = IScsiCheckSN (&Tcb->Conn->ExpStatSN, NopInHdr->StatSN);\r | |
2484 | if (EFI_ERROR (Status)) {\r | |
2485 | return Status;\r | |
2486 | }\r | |
2487 | }\r | |
2488 | \r | |
2489 | IScsiUpdateCmdSN (Tcb->Conn->Session, NopInHdr->MaxCmdSN, NopInHdr->ExpCmdSN);\r | |
2490 | \r | |
2491 | return EFI_SUCCESS;\r | |
2492 | }\r | |
2493 | \r | |
12618416 | 2494 | /**\r |
2495 | Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r | |
6a690e23 | 2496 | \r |
db3e605d | 2497 | @param[in] PassThru The EXT SCSI PASS THRU protocol.\r |
2498 | @param[in] Target The target ID.\r | |
2499 | @param[in] Lun The LUN.\r | |
2500 | @param[in, out] Packet The request packet containing IO request, SCSI command\r | |
2501 | buffer and buffers to read/write.\r | |
2502 | \r | |
2503 | @retval EFI_SUCCES The SCSI command is executed and the result is updated to \r | |
2504 | the Packet.\r | |
963dbb30 | 2505 | @retval EFI_DEVICE_ERROR Session state was not as required.\r |
db3e605d | 2506 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r |
963dbb30 | 2507 | @retval Others Other errors as indicated.\r |
12618416 | 2508 | **/\r |
2509 | EFI_STATUS\r | |
2510 | IScsiExecuteScsiCommand (\r | |
2511 | IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r | |
2512 | IN UINT8 *Target,\r | |
2513 | IN UINT64 Lun,\r | |
2514 | IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r | |
2515 | )\r | |
6a690e23 | 2516 | {\r |
2517 | EFI_STATUS Status;\r | |
2518 | ISCSI_DRIVER_DATA *Private;\r | |
2519 | ISCSI_SESSION *Session;\r | |
2520 | EFI_EVENT TimeoutEvent;\r | |
2521 | ISCSI_CONNECTION *Conn;\r | |
2522 | ISCSI_TCB *Tcb;\r | |
2523 | NET_BUF *Pdu;\r | |
2524 | ISCSI_XFER_CONTEXT *XferContext;\r | |
2525 | UINT8 *Data;\r | |
2526 | ISCSI_IN_BUFFER_CONTEXT InBufferContext;\r | |
2527 | UINT64 Timeout;\r | |
f3b4867f | 2528 | UINT8 *PduHdr;\r |
6a690e23 | 2529 | \r |
2530 | Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (PassThru);\r | |
2531 | Session = &Private->Session;\r | |
2532 | Status = EFI_SUCCESS;\r | |
2533 | Tcb = NULL;\r | |
2534 | TimeoutEvent = NULL;\r | |
5c70cb32 | 2535 | Timeout = 0;\r |
6a690e23 | 2536 | \r |
2537 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2538 | return EFI_DEVICE_ERROR;\r | |
2539 | }\r | |
2540 | \r | |
2541 | Conn = NET_LIST_USER_STRUCT_S (\r | |
2542 | Session->Conns.ForwardLink,\r | |
2543 | ISCSI_CONNECTION,\r | |
2544 | Link,\r | |
2545 | ISCSI_CONNECTION_SIGNATURE\r | |
2546 | );\r | |
2547 | \r | |
2548 | if (Packet->Timeout != 0) {\r | |
2549 | Timeout = MultU64x32 (Packet->Timeout, 2);\r | |
6a690e23 | 2550 | }\r |
2551 | \r | |
2552 | Status = IScsiNewTcb (Conn, &Tcb);\r | |
2553 | if (EFI_ERROR (Status)) {\r | |
2554 | goto ON_EXIT;\r | |
2555 | }\r | |
2556 | //\r | |
2557 | // Encapsulate the SCSI request packet into an iSCSI SCSI Command PDU.\r | |
2558 | //\r | |
2559 | Pdu = IScsiNewScsiCmdPdu (Packet, Lun, Tcb);\r | |
2560 | if (Pdu == NULL) {\r | |
2561 | Status = EFI_OUT_OF_RESOURCES;\r | |
2562 | goto ON_EXIT;\r | |
2563 | }\r | |
2564 | \r | |
2565 | XferContext = &Tcb->XferContext;\r | |
f3b4867f ED |
2566 | PduHdr = NetbufGetByte (Pdu, 0, NULL);\r |
2567 | if (PduHdr == NULL) {\r | |
2568 | Status = EFI_PROTOCOL_ERROR;\r | |
2569 | NetbufFree (Pdu);\r | |
2570 | goto ON_EXIT;\r | |
2571 | }\r | |
2572 | XferContext->Offset = ISCSI_GET_DATASEG_LEN (PduHdr);\r | |
6a690e23 | 2573 | \r |
2574 | //\r | |
2575 | // Transmit the SCSI Command PDU.\r | |
2576 | //\r | |
2577 | Status = Tcp4IoTransmit (&Conn->Tcp4Io, Pdu);\r | |
2578 | \r | |
2579 | NetbufFree (Pdu);\r | |
2580 | \r | |
2581 | if (EFI_ERROR (Status)) {\r | |
2582 | goto ON_EXIT;\r | |
2583 | }\r | |
2584 | \r | |
2585 | if (!Session->InitialR2T &&\r | |
2586 | (XferContext->Offset < Session->FirstBurstLength) &&\r | |
2587 | (XferContext->Offset < Packet->OutTransferLength)\r | |
2588 | ) {\r | |
2589 | //\r | |
2590 | // Unsolicited Data-Out sequence is allowed, there is remaining SCSI\r | |
2591 | // OUT data and the limit of FirstBurstLength is not reached.\r | |
2592 | //\r | |
2593 | XferContext->TargetTransferTag = ISCSI_RESERVED_TAG;\r | |
2594 | XferContext->DesiredLength = MIN (\r | |
2595 | Session->FirstBurstLength,\r | |
2596 | Packet->OutTransferLength - XferContext->Offset\r | |
2597 | );\r | |
2598 | \r | |
2599 | Data = (UINT8 *) Packet->OutDataBuffer + XferContext->Offset;\r | |
2600 | Status = IScsiSendDataOutPduSequence (Data, Lun, Tcb);\r | |
2601 | if (EFI_ERROR (Status)) {\r | |
2602 | goto ON_EXIT;\r | |
2603 | }\r | |
2604 | }\r | |
2605 | \r | |
2606 | InBufferContext.InData = (UINT8 *) Packet->InDataBuffer;\r | |
2607 | InBufferContext.InDataLen = Packet->InTransferLength;\r | |
2608 | \r | |
2609 | while (!Tcb->StatusXferd) {\r | |
5c70cb32 | 2610 | //\r |
2611 | // Start the timeout timer.\r | |
2612 | //\r | |
db3e605d | 2613 | if (Timeout != 0) {\r |
5c70cb32 | 2614 | Status = gBS->SetTimer (Conn->TimeoutEvent, TimerRelative, Timeout);\r |
2615 | if (EFI_ERROR (Status)) {\r | |
2616 | goto ON_EXIT;\r | |
2617 | }\r | |
2618 | TimeoutEvent = Conn->TimeoutEvent; \r | |
2619 | }\r | |
6a690e23 | 2620 | //\r |
2621 | // try to receive PDU from target.\r | |
2622 | //\r | |
2623 | Status = IScsiReceivePdu (Conn, &Pdu, &InBufferContext, FALSE, FALSE, TimeoutEvent);\r | |
2624 | if (EFI_ERROR (Status)) {\r | |
2625 | goto ON_EXIT;\r | |
2626 | }\r | |
2627 | \r | |
f3b4867f ED |
2628 | PduHdr = NetbufGetByte (Pdu, 0, NULL);\r |
2629 | if (PduHdr == NULL) {\r | |
2630 | Status = EFI_PROTOCOL_ERROR;\r | |
2631 | NetbufFree (Pdu);\r | |
2632 | goto ON_EXIT;\r | |
2633 | }\r | |
2634 | switch (ISCSI_GET_OPCODE (PduHdr)) {\r | |
6a690e23 | 2635 | case ISCSI_OPCODE_SCSI_DATA_IN:\r |
2636 | Status = IScsiOnDataInRcvd (Pdu, Tcb, Packet);\r | |
2637 | break;\r | |
2638 | \r | |
2639 | case ISCSI_OPCODE_R2T:\r | |
2640 | Status = IScsiOnR2TRcvd (Pdu, Tcb, Lun, Packet);\r | |
2641 | break;\r | |
2642 | \r | |
2643 | case ISCSI_OPCODE_SCSI_RSP:\r | |
2644 | Status = IScsiOnScsiRspRcvd (Pdu, Tcb, Packet);\r | |
2645 | break;\r | |
2646 | \r | |
2647 | case ISCSI_OPCODE_NOP_IN:\r | |
2648 | Status = IScsiOnNopInRcvd (Pdu, Tcb);\r | |
2649 | break;\r | |
2650 | \r | |
2651 | case ISCSI_OPCODE_VENDOR_T0:\r | |
2652 | case ISCSI_OPCODE_VENDOR_T1:\r | |
2653 | case ISCSI_OPCODE_VENDOR_T2:\r | |
2654 | //\r | |
2655 | // These messages are vendor specific, skip them.\r | |
2656 | //\r | |
2657 | break;\r | |
2658 | \r | |
2659 | default:\r | |
2660 | Status = EFI_PROTOCOL_ERROR;\r | |
2661 | break;\r | |
2662 | }\r | |
2663 | \r | |
2664 | NetbufFree (Pdu);\r | |
2665 | \r | |
2666 | if (EFI_ERROR (Status)) {\r | |
2667 | break;\r | |
2668 | }\r | |
2669 | }\r | |
2670 | \r | |
2671 | ON_EXIT:\r | |
2672 | \r | |
2673 | if (TimeoutEvent != NULL) {\r | |
2674 | gBS->SetTimer (TimeoutEvent, TimerCancel, 0);\r | |
2675 | }\r | |
2676 | \r | |
2677 | if (Tcb != NULL) {\r | |
2678 | IScsiDelTcb (Tcb);\r | |
2679 | }\r | |
2680 | \r | |
2681 | if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r | |
2682 | //\r | |
2683 | // Reinstate the session.\r | |
2684 | //\r | |
2685 | if (EFI_ERROR (IScsiSessionReinstatement (Private))) {\r | |
2686 | Status = EFI_DEVICE_ERROR;\r | |
2687 | }\r | |
2688 | }\r | |
2689 | \r | |
2690 | return Status;\r | |
2691 | }\r | |
2692 | \r | |
12618416 | 2693 | /**\r |
6a690e23 | 2694 | Reinstate the session on some error.\r |
2695 | \r | |
c5de0d55 | 2696 | @param[in, out] Private The iSCSI driver data.\r |
6a690e23 | 2697 | \r |
12618416 | 2698 | @retval EFI_SUCCES The session is reinstated from some error.\r |
db3e605d | 2699 | @retval Other Reinstatement failed.\r |
12618416 | 2700 | **/\r |
2701 | EFI_STATUS\r | |
2702 | IScsiSessionReinstatement (\r | |
c5de0d55 | 2703 | IN OUT ISCSI_DRIVER_DATA *Private\r |
12618416 | 2704 | )\r |
6a690e23 | 2705 | {\r |
2706 | ISCSI_SESSION *Session;\r | |
2707 | EFI_STATUS Status;\r | |
2708 | \r | |
2709 | Session = &Private->Session;\r | |
2710 | ASSERT (Session->State == SESSION_STATE_LOGGED_IN);\r | |
2711 | \r | |
2712 | //\r | |
2713 | // Abort the session and re-init it.\r | |
2714 | //\r | |
2715 | IScsiSessionAbort (Session);\r | |
2716 | IScsiSessionInit (Session, TRUE);\r | |
2717 | \r | |
2718 | //\r | |
2719 | // Login again.\r | |
2720 | //\r | |
2721 | Status = IScsiSessionLogin (Private);\r | |
2722 | \r | |
2723 | return Status;\r | |
2724 | }\r | |
2725 | \r | |
12618416 | 2726 | /**\r |
6a690e23 | 2727 | Initialize some session parameters before login.\r |
2728 | \r | |
963dbb30 | 2729 | @param[in, out] Session The iSCSI session.\r |
2730 | @param[in] Recovery Whether the request is from a fresh new start or recovery.\r | |
12618416 | 2731 | **/\r |
2732 | VOID\r | |
2733 | IScsiSessionInit (\r | |
963dbb30 | 2734 | IN OUT ISCSI_SESSION *Session,\r |
2735 | IN BOOLEAN Recovery\r | |
12618416 | 2736 | )\r |
6a690e23 | 2737 | {\r |
6a690e23 | 2738 | if (!Recovery) {\r |
2739 | Session->Signature = ISCSI_SESSION_SIGNATURE;\r | |
2740 | Session->State = SESSION_STATE_FREE;\r | |
2741 | \r | |
e48e37fc | 2742 | InitializeListHead (&Session->Conns);\r |
2743 | InitializeListHead (&Session->TcbList);\r | |
6a690e23 | 2744 | }\r |
2745 | \r | |
a78d176c | 2746 | Session->Tsih = 0;\r |
6a690e23 | 2747 | \r |
2748 | Session->CmdSN = 1;\r | |
2749 | Session->InitiatorTaskTag = 1;\r | |
a78d176c | 2750 | Session->NextCid = 1;\r |
6a690e23 | 2751 | \r |
2752 | Session->TargetPortalGroupTag = 0;\r | |
2753 | Session->MaxConnections = ISCSI_MAX_CONNS_PER_SESSION;\r | |
2754 | Session->InitialR2T = FALSE;\r | |
2755 | Session->ImmediateData = TRUE;\r | |
2756 | Session->MaxBurstLength = 262144;\r | |
2757 | Session->FirstBurstLength = MAX_RECV_DATA_SEG_LEN_IN_FFP;\r | |
2758 | Session->DefaultTime2Wait = 2;\r | |
2759 | Session->DefaultTime2Retain = 20;\r | |
2760 | Session->MaxOutstandingR2T = DEFAULT_MAX_OUTSTANDING_R2T;\r | |
2761 | Session->DataPDUInOrder = TRUE;\r | |
2762 | Session->DataSequenceInOrder = TRUE;\r | |
2763 | Session->ErrorRecoveryLevel = 0;\r | |
2764 | }\r | |
2765 | \r | |
12618416 | 2766 | /**\r |
6a690e23 | 2767 | Abort the iSCSI session, that is, reset all the connection and free the\r |
2768 | resources.\r | |
2769 | \r | |
c5de0d55 | 2770 | @param[in, out] Session The iSCSI session.\r |
6a690e23 | 2771 | \r |
12618416 | 2772 | @retval EFI_SUCCES The session is aborted.\r |
12618416 | 2773 | **/\r |
2774 | EFI_STATUS\r | |
2775 | IScsiSessionAbort (\r | |
c5de0d55 | 2776 | IN OUT ISCSI_SESSION *Session\r |
12618416 | 2777 | )\r |
6a690e23 | 2778 | {\r |
2779 | ISCSI_DRIVER_DATA *Private;\r | |
2780 | ISCSI_CONNECTION *Conn;\r | |
2781 | \r | |
2782 | if (Session->State != SESSION_STATE_LOGGED_IN) {\r | |
2783 | return EFI_SUCCESS;\r | |
2784 | }\r | |
2785 | \r | |
e48e37fc | 2786 | ASSERT (!IsListEmpty (&Session->Conns));\r |
6a690e23 | 2787 | \r |
2788 | Private = ISCSI_DRIVER_DATA_FROM_SESSION (Session);\r | |
2789 | \r | |
e48e37fc | 2790 | while (!IsListEmpty (&Session->Conns)) {\r |
6a690e23 | 2791 | Conn = NET_LIST_USER_STRUCT_S (\r |
2792 | Session->Conns.ForwardLink,\r | |
2793 | ISCSI_CONNECTION,\r | |
2794 | Link,\r | |
2795 | ISCSI_CONNECTION_SIGNATURE\r | |
2796 | );\r | |
2797 | \r | |
2798 | gBS->CloseProtocol (\r | |
2799 | Conn->Tcp4Io.Handle,\r | |
2800 | &gEfiTcp4ProtocolGuid,\r | |
2801 | Private->Image,\r | |
2802 | Private->ExtScsiPassThruHandle\r | |
2803 | );\r | |
2804 | \r | |
2805 | IScsiConnReset (Conn);\r | |
2806 | \r | |
2807 | IScsiDetatchConnection (Conn);\r | |
2808 | IScsiDestroyConnection (Conn);\r | |
2809 | }\r | |
2810 | \r | |
2811 | Session->State = SESSION_STATE_FAILED;\r | |
2812 | \r | |
2813 | return EFI_SUCCESS;\r | |
2814 | }\r |