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1 | /** @file\r |
2 | Mtftp6 Wrq process functions implementation.\r | |
3 | \r | |
94866d40 | 4 | Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r |
a3bcde70 HT |
5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "Mtftp6Impl.h"\r | |
17 | \r | |
18 | \r | |
19 | \r | |
20 | /**\r | |
21 | Build and send a Mtftp6 data packet for upload.\r | |
22 | \r | |
23 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
24 | @param[in] BlockNum The block num to be sent.\r | |
25 | \r | |
26 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet.\r | |
27 | @retval EFI_SUCCESS The data packet was sent.\r | |
28 | @retval EFI_ABORTED The user aborted this process.\r | |
29 | \r | |
30 | **/\r | |
31 | EFI_STATUS\r | |
32 | Mtftp6WrqSendBlock (\r | |
33 | IN MTFTP6_INSTANCE *Instance,\r | |
34 | IN UINT16 BlockNum\r | |
35 | )\r | |
36 | {\r | |
37 | EFI_MTFTP6_PACKET *Packet;\r | |
38 | EFI_MTFTP6_TOKEN *Token;\r | |
39 | NET_BUF *UdpPacket;\r | |
40 | EFI_STATUS Status;\r | |
41 | UINT16 DataLen;\r | |
42 | UINT8 *DataBuf;\r | |
43 | UINT64 Start;\r | |
44 | \r | |
45 | //\r | |
46 | // Allocate net buffer to create data packet.\r | |
47 | //\r | |
48 | UdpPacket = NetbufAlloc (Instance->BlkSize + MTFTP6_DATA_HEAD_LEN);\r | |
49 | \r | |
50 | if (UdpPacket == NULL) {\r | |
51 | return EFI_OUT_OF_RESOURCES;\r | |
52 | }\r | |
53 | \r | |
54 | Packet = (EFI_MTFTP6_PACKET *) NetbufAllocSpace (\r | |
55 | UdpPacket,\r | |
56 | MTFTP6_DATA_HEAD_LEN,\r | |
57 | FALSE\r | |
58 | );\r | |
59 | ASSERT (Packet != NULL);\r | |
60 | \r | |
61 | Packet->Data.OpCode = HTONS (EFI_MTFTP6_OPCODE_DATA);\r | |
62 | Packet->Data.Block = HTONS (BlockNum);\r | |
63 | \r | |
64 | //\r | |
65 | // Read the block from either the buffer or PacketNeeded callback\r | |
66 | //\r | |
67 | Token = Instance->Token;\r | |
68 | DataLen = Instance->BlkSize;\r | |
69 | \r | |
70 | if (Token->Buffer != NULL) {\r | |
71 | Start = MultU64x32 (BlockNum - 1, Instance->BlkSize);\r | |
72 | \r | |
73 | if (Token->BufferSize < Start + Instance->BlkSize) {\r | |
74 | DataLen = (UINT16) (Token->BufferSize - Start);\r | |
75 | Instance->LastBlk = BlockNum;\r | |
76 | Mtftp6SetLastBlockNum (&Instance->BlkList, BlockNum);\r | |
77 | }\r | |
78 | \r | |
79 | if (DataLen > 0) {\r | |
80 | NetbufAllocSpace (UdpPacket, DataLen, FALSE);\r | |
81 | CopyMem (Packet->Data.Data, (UINT8 *) Token->Buffer + Start, DataLen);\r | |
82 | }\r | |
83 | \r | |
84 | } else {\r | |
85 | //\r | |
86 | // Get data from PacketNeeded\r | |
87 | //\r | |
88 | DataBuf = NULL;\r | |
89 | Status = Token->PacketNeeded (&Instance->Mtftp6, Token, &DataLen, (VOID*) &DataBuf);\r | |
90 | \r | |
91 | if (EFI_ERROR (Status) || (DataLen > Instance->BlkSize)) {\r | |
92 | if (DataBuf != NULL) {\r | |
93 | gBS->FreePool (DataBuf);\r | |
94 | }\r | |
95 | //\r | |
96 | // The received packet has already been freed.\r | |
97 | //\r | |
98 | Mtftp6SendError (\r | |
99 | Instance,\r | |
100 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
101 | (UINT8 *) "User aborted the transfer"\r | |
102 | );\r | |
103 | \r | |
104 | return EFI_ABORTED;\r | |
105 | }\r | |
106 | \r | |
107 | if (DataLen < Instance->BlkSize) {\r | |
108 | Instance->LastBlk = BlockNum;\r | |
109 | Mtftp6SetLastBlockNum (&Instance->BlkList, BlockNum);\r | |
110 | }\r | |
111 | \r | |
112 | if (DataLen > 0) {\r | |
113 | NetbufAllocSpace (UdpPacket, DataLen, FALSE);\r | |
114 | CopyMem (Packet->Data.Data, DataBuf, DataLen);\r | |
115 | gBS->FreePool (DataBuf);\r | |
116 | }\r | |
117 | }\r | |
118 | \r | |
119 | //\r | |
120 | // Reset current retry count of the instance.\r | |
121 | //\r | |
122 | Instance->CurRetry = 0;\r | |
123 | \r | |
124 | return Mtftp6TransmitPacket (Instance, UdpPacket);\r | |
125 | }\r | |
126 | \r | |
127 | \r | |
128 | /**\r | |
129 | Function to handle received ACK packet. If the ACK number matches the\r | |
130 | expected block number, with more data pending, send the next\r | |
131 | block. Otherwise, tell the caller that we are done.\r | |
132 | \r | |
133 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
134 | @param[in] Packet The pointer to the received packet.\r | |
135 | @param[in] Len The length of the packet.\r | |
136 | @param[out] UdpPacket The net buf of received packet.\r | |
137 | @param[out] IsCompleted If TRUE, the upload has been completed.\r | |
138 | Otherwise, the upload has not been completed.\r | |
139 | \r | |
140 | @retval EFI_SUCCESS The ACK packet successfully processed.\r | |
141 | @retval EFI_TFTP_ERROR The block number loops back.\r | |
142 | @retval Others Failed to transmit the next data packet.\r | |
143 | \r | |
144 | **/\r | |
145 | EFI_STATUS\r | |
146 | Mtftp6WrqHandleAck (\r | |
147 | IN MTFTP6_INSTANCE *Instance,\r | |
148 | IN EFI_MTFTP6_PACKET *Packet,\r | |
149 | IN UINT32 Len,\r | |
150 | OUT NET_BUF **UdpPacket,\r | |
151 | OUT BOOLEAN *IsCompleted\r | |
152 | )\r | |
153 | {\r | |
154 | UINT16 AckNum;\r | |
155 | INTN Expected;\r | |
156 | UINT64 TotalBlock;\r | |
157 | \r | |
158 | *IsCompleted = FALSE;\r | |
159 | AckNum = NTOHS (Packet->Ack.Block[0]);\r | |
160 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
161 | \r | |
162 | ASSERT (Expected >= 0);\r | |
163 | \r | |
164 | //\r | |
165 | // Get an unwanted ACK, return EFI_SUCCESS to let Mtftp6WrqInput\r | |
166 | // restart receive.\r | |
167 | //\r | |
168 | if (Expected != AckNum) {\r | |
169 | return EFI_SUCCESS;\r | |
170 | }\r | |
171 | \r | |
172 | //\r | |
173 | // Remove the acked block number, if this is the last block number,\r | |
174 | // tell the Mtftp6WrqInput to finish the transfer. This is the last\r | |
175 | // block number if the block range are empty..\r | |
176 | //\r | |
177 | Mtftp6RemoveBlockNum (&Instance->BlkList, AckNum, *IsCompleted, &TotalBlock);\r | |
178 | \r | |
179 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
180 | \r | |
181 | if (Expected < 0) {\r | |
182 | //\r | |
183 | // The block range is empty. It may either because the the last\r | |
184 | // block has been ACKed, or the sequence number just looped back,\r | |
185 | // that is, there is more than 0xffff blocks.\r | |
186 | //\r | |
187 | if (Instance->LastBlk == AckNum) {\r | |
188 | ASSERT (Instance->LastBlk >= 1);\r | |
189 | *IsCompleted = TRUE;\r | |
190 | return EFI_SUCCESS;\r | |
191 | \r | |
192 | } else {\r | |
193 | //\r | |
194 | // Free the received packet before send new packet in ReceiveNotify,\r | |
195 | // since the udpio might need to be reconfigured.\r | |
196 | //\r | |
197 | NetbufFree (*UdpPacket);\r | |
198 | *UdpPacket = NULL;\r | |
199 | //\r | |
200 | // Send the Mtftp6 error message if block number rolls back.\r | |
201 | //\r | |
202 | Mtftp6SendError (\r | |
203 | Instance,\r | |
204 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
205 | (UINT8 *) "Block number rolls back, not supported, try blksize option"\r | |
206 | );\r | |
207 | \r | |
208 | return EFI_TFTP_ERROR;\r | |
209 | }\r | |
210 | }\r | |
211 | \r | |
212 | //\r | |
213 | // Free the receive buffer before send new packet since it might need\r | |
214 | // reconfigure udpio.\r | |
215 | //\r | |
216 | NetbufFree (*UdpPacket);\r | |
217 | *UdpPacket = NULL;\r | |
218 | \r | |
219 | return Mtftp6WrqSendBlock (Instance, (UINT16) Expected);\r | |
220 | }\r | |
221 | \r | |
222 | \r | |
223 | /**\r | |
224 | Check whether the received OACK is valid. The OACK is valid\r | |
225 | only if:\r | |
226 | 1. It only include options requested by us.\r | |
227 | 2. It can only include a smaller block size.\r | |
228 | 3. It can't change the proposed time out value.\r | |
229 | 4. Other requirements of the individal MTFTP6 options as required.\r | |
230 | \r | |
231 | @param[in] ReplyInfo The pointer to options information in reply packet.\r | |
232 | @param[in] RequestInfo The pointer to requested options information.\r | |
233 | \r | |
234 | @retval TRUE If the option in OACK is valid.\r | |
235 | @retval FALSE If the option is invalid.\r | |
236 | \r | |
237 | **/\r | |
238 | BOOLEAN\r | |
239 | Mtftp6WrqOackValid (\r | |
240 | IN MTFTP6_EXT_OPTION_INFO *ReplyInfo,\r | |
241 | IN MTFTP6_EXT_OPTION_INFO *RequestInfo\r | |
242 | )\r | |
243 | {\r | |
244 | //\r | |
245 | // It is invalid for server to return options we don't request\r | |
246 | //\r | |
247 | if ((ReplyInfo->BitMap & ~RequestInfo->BitMap) != 0) {\r | |
248 | return FALSE;\r | |
249 | }\r | |
250 | \r | |
251 | //\r | |
252 | // Server can only specify a smaller block size to be used and\r | |
253 | // return the timeout matches that requested.\r | |
254 | //\r | |
255 | if ((((ReplyInfo->BitMap & MTFTP6_OPT_BLKSIZE_BIT) != 0) && (ReplyInfo->BlkSize > RequestInfo->BlkSize)) ||\r | |
256 | (((ReplyInfo->BitMap & MTFTP6_OPT_TIMEOUT_BIT) != 0) && (ReplyInfo->Timeout != RequestInfo->Timeout))\r | |
257 | ) {\r | |
258 | \r | |
259 | return FALSE;\r | |
260 | }\r | |
261 | \r | |
262 | return TRUE;\r | |
263 | }\r | |
264 | \r | |
265 | \r | |
266 | /**\r | |
267 | Process the OACK packet for Wrq.\r | |
268 | \r | |
269 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
270 | @param[in] Packet The pointer to the received packet.\r | |
271 | @param[in] Len The length of the packet.\r | |
272 | @param[out] UdpPacket The net buf of received packet.\r | |
273 | @param[out] IsCompleted If TRUE, the upload has been completed.\r | |
274 | Otherwise, the upload has not been completed.\r | |
275 | \r | |
276 | @retval EFI_SUCCESS The OACK packet successfully processed.\r | |
277 | @retval EFI_TFTP_ERROR An TFTP communication error happened.\r | |
278 | @retval Others Failed to process the OACK packet.\r | |
279 | \r | |
280 | **/\r | |
281 | EFI_STATUS\r | |
282 | Mtftp6WrqHandleOack (\r | |
283 | IN MTFTP6_INSTANCE *Instance,\r | |
284 | IN EFI_MTFTP6_PACKET *Packet,\r | |
285 | IN UINT32 Len,\r | |
286 | OUT NET_BUF **UdpPacket,\r | |
287 | OUT BOOLEAN *IsCompleted\r | |
288 | )\r | |
289 | {\r | |
290 | EFI_MTFTP6_OPTION *Options;\r | |
291 | UINT32 Count;\r | |
292 | MTFTP6_EXT_OPTION_INFO ExtInfo;\r | |
293 | EFI_MTFTP6_PACKET Dummy;\r | |
294 | EFI_STATUS Status;\r | |
295 | INTN Expected;\r | |
296 | \r | |
297 | *IsCompleted = FALSE;\r | |
94866d40 | 298 | Options = NULL;\r |
a3bcde70 HT |
299 | \r |
300 | //\r | |
301 | // Ignore the OACK if already started the upload\r | |
302 | //\r | |
303 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
304 | \r | |
305 | if (Expected != 0) {\r | |
306 | return EFI_SUCCESS;\r | |
307 | }\r | |
308 | \r | |
309 | //\r | |
310 | // Parse and validate the options from server\r | |
311 | //\r | |
312 | ZeroMem (&ExtInfo, sizeof (MTFTP6_EXT_OPTION_INFO));\r | |
313 | \r | |
314 | Status = Mtftp6ParseStart (Packet, Len, &Count, &Options);\r | |
315 | \r | |
316 | if (EFI_ERROR (Status)) {\r | |
317 | return Status;\r | |
318 | }\r | |
7a49cd08 | 319 | ASSERT (Options != NULL);\r |
a3bcde70 HT |
320 | \r |
321 | Status = Mtftp6ParseExtensionOption (Options, Count, FALSE, &ExtInfo);\r | |
322 | \r | |
323 | if (EFI_ERROR(Status) || !Mtftp6WrqOackValid (&ExtInfo, &Instance->ExtInfo)) {\r | |
324 | //\r | |
325 | // Don't send a MTFTP error packet when out of resource, it can\r | |
326 | // only make it worse.\r | |
327 | //\r | |
328 | if (Status != EFI_OUT_OF_RESOURCES) {\r | |
329 | //\r | |
330 | // Free the received packet before send new packet in ReceiveNotify,\r | |
331 | // since the udpio might need to be reconfigured.\r | |
332 | //\r | |
333 | NetbufFree (*UdpPacket);\r | |
334 | *UdpPacket = NULL;\r | |
335 | //\r | |
336 | // Send the Mtftp6 error message if invalid Oack packet received.\r | |
337 | //\r | |
338 | Mtftp6SendError (\r | |
339 | Instance,\r | |
340 | EFI_MTFTP6_ERRORCODE_ILLEGAL_OPERATION,\r | |
341 | (UINT8 *) "Mal-formated OACK packet"\r | |
342 | );\r | |
343 | }\r | |
344 | \r | |
345 | return EFI_TFTP_ERROR;\r | |
346 | }\r | |
347 | \r | |
348 | if (ExtInfo.BlkSize != 0) {\r | |
349 | Instance->BlkSize = ExtInfo.BlkSize;\r | |
350 | }\r | |
351 | \r | |
352 | if (ExtInfo.Timeout != 0) {\r | |
353 | Instance->Timeout = ExtInfo.Timeout;\r | |
354 | }\r | |
355 | \r | |
356 | //\r | |
357 | // Build a bogus ACK0 packet then pass it to the Mtftp6WrqHandleAck,\r | |
358 | // which will start the transmission of the first data block.\r | |
359 | //\r | |
360 | Dummy.Ack.OpCode = HTONS (EFI_MTFTP6_OPCODE_ACK);\r | |
361 | Dummy.Ack.Block[0] = 0;\r | |
362 | \r | |
363 | return Mtftp6WrqHandleAck (\r | |
364 | Instance,\r | |
365 | &Dummy,\r | |
366 | sizeof (EFI_MTFTP6_ACK_HEADER),\r | |
367 | UdpPacket,\r | |
368 | IsCompleted\r | |
369 | );\r | |
370 | }\r | |
371 | \r | |
372 | \r | |
373 | /**\r | |
374 | The packet process callback for Mtftp6 upload.\r | |
375 | \r | |
376 | @param[in] UdpPacket The pointer to the packet received.\r | |
377 | @param[in] UdpEpt The pointer to the Udp6 access point.\r | |
378 | @param[in] IoStatus The status from Udp6 instance.\r | |
379 | @param[in] Context The pointer to the context.\r | |
380 | \r | |
381 | **/\r | |
382 | VOID\r | |
383 | EFIAPI\r | |
384 | Mtftp6WrqInput (\r | |
385 | IN NET_BUF *UdpPacket,\r | |
386 | IN UDP_END_POINT *UdpEpt,\r | |
387 | IN EFI_STATUS IoStatus,\r | |
388 | IN VOID *Context\r | |
389 | )\r | |
390 | {\r | |
391 | MTFTP6_INSTANCE *Instance;\r | |
392 | EFI_MTFTP6_PACKET *Packet;\r | |
393 | BOOLEAN IsCompleted;\r | |
394 | EFI_STATUS Status;\r | |
395 | UINT32 TotalNum;\r | |
396 | UINT32 Len;\r | |
397 | UINT16 Opcode;\r | |
398 | \r | |
399 | Instance = (MTFTP6_INSTANCE *) Context;\r | |
400 | \r | |
401 | NET_CHECK_SIGNATURE (Instance, MTFTP6_INSTANCE_SIGNATURE);\r | |
402 | \r | |
403 | IsCompleted = FALSE;\r | |
404 | Packet = NULL;\r | |
405 | Status = EFI_SUCCESS;\r | |
406 | TotalNum = 0;\r | |
407 | \r | |
408 | //\r | |
409 | // Return error status if Udp6 instance failed to receive.\r | |
410 | //\r | |
411 | if (EFI_ERROR (IoStatus)) {\r | |
412 | Status = IoStatus;\r | |
413 | goto ON_EXIT;\r | |
414 | }\r | |
415 | \r | |
416 | ASSERT (UdpPacket != NULL);\r | |
417 | \r | |
418 | if (UdpPacket->TotalSize < MTFTP6_OPCODE_LEN) {\r | |
419 | goto ON_EXIT;\r | |
420 | }\r | |
421 | \r | |
422 | //\r | |
423 | // Client send initial request to server's listening port. Server\r | |
424 | // will select a UDP port to communicate with the client.\r | |
425 | //\r | |
426 | if (UdpEpt->RemotePort != Instance->ServerDataPort) {\r | |
427 | if (Instance->ServerDataPort != 0) {\r | |
428 | goto ON_EXIT;\r | |
429 | } else {\r | |
430 | Instance->ServerDataPort = UdpEpt->RemotePort;\r | |
431 | }\r | |
432 | }\r | |
433 | \r | |
434 | //\r | |
435 | // Copy the MTFTP packet to a continuous buffer if it isn't already so.\r | |
436 | //\r | |
437 | Len = UdpPacket->TotalSize;\r | |
438 | TotalNum = UdpPacket->BlockOpNum;\r | |
439 | \r | |
440 | if (TotalNum > 1) {\r | |
441 | Packet = AllocateZeroPool (Len);\r | |
442 | \r | |
443 | if (Packet == NULL) {\r | |
444 | Status = EFI_OUT_OF_RESOURCES;\r | |
445 | goto ON_EXIT;\r | |
446 | }\r | |
447 | \r | |
448 | NetbufCopy (UdpPacket, 0, Len, (UINT8 *) Packet);\r | |
449 | \r | |
450 | } else {\r | |
451 | Packet = (EFI_MTFTP6_PACKET *) NetbufGetByte (UdpPacket, 0, NULL);\r | |
452 | ASSERT (Packet != NULL);\r | |
453 | }\r | |
454 | \r | |
455 | Opcode = NTOHS (Packet->OpCode);\r | |
456 | \r | |
457 | //\r | |
458 | // Callback to the user's CheckPacket if provided. Abort the transmission\r | |
459 | // if CheckPacket returns an EFI_ERROR code.\r | |
460 | //\r | |
461 | if (Instance->Token->CheckPacket != NULL &&\r | |
462 | (Opcode == EFI_MTFTP6_OPCODE_OACK || Opcode == EFI_MTFTP6_OPCODE_ERROR)\r | |
463 | ) {\r | |
464 | \r | |
465 | Status = Instance->Token->CheckPacket (\r | |
466 | &Instance->Mtftp6,\r | |
467 | Instance->Token,\r | |
468 | (UINT16) Len,\r | |
469 | Packet\r | |
470 | );\r | |
471 | \r | |
472 | if (EFI_ERROR (Status)) {\r | |
473 | //\r | |
474 | // Send an error message to the server to inform it\r | |
475 | //\r | |
476 | if (Opcode != EFI_MTFTP6_OPCODE_ERROR) {\r | |
477 | //\r | |
478 | // Free the received packet before send new packet in ReceiveNotify,\r | |
479 | // since the udpio might need to be reconfigured.\r | |
480 | //\r | |
481 | NetbufFree (UdpPacket);\r | |
482 | UdpPacket = NULL;\r | |
483 | //\r | |
484 | // Send the Mtftp6 error message if user aborted the current session.\r | |
485 | //\r | |
486 | Mtftp6SendError (\r | |
487 | Instance,\r | |
488 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
489 | (UINT8 *) "User aborted the transfer"\r | |
490 | );\r | |
491 | }\r | |
492 | \r | |
493 | Status = EFI_ABORTED;\r | |
494 | goto ON_EXIT;\r | |
495 | }\r | |
496 | }\r | |
497 | \r | |
498 | //\r | |
499 | // Switch the process routines by the operation code.\r | |
500 | //\r | |
501 | switch (Opcode) {\r | |
502 | case EFI_MTFTP6_OPCODE_ACK:\r | |
503 | if (Len != MTFTP6_OPCODE_LEN + MTFTP6_BLKNO_LEN) {\r | |
504 | goto ON_EXIT;\r | |
505 | }\r | |
506 | //\r | |
507 | // Handle the Ack packet of Wrq.\r | |
508 | //\r | |
509 | Status = Mtftp6WrqHandleAck (Instance, Packet, Len, &UdpPacket, &IsCompleted);\r | |
510 | break;\r | |
511 | \r | |
512 | case EFI_MTFTP6_OPCODE_OACK:\r | |
513 | if (Len <= MTFTP6_OPCODE_LEN) {\r | |
514 | goto ON_EXIT;\r | |
515 | }\r | |
516 | //\r | |
517 | // Handle the Oack packet of Wrq.\r | |
518 | //\r | |
519 | Status = Mtftp6WrqHandleOack (Instance, Packet, Len, &UdpPacket, &IsCompleted);\r | |
520 | break;\r | |
521 | \r | |
522 | default:\r | |
523 | //\r | |
524 | // Drop and return eror if received error message.\r | |
525 | //\r | |
526 | Status = EFI_TFTP_ERROR;\r | |
527 | break;\r | |
528 | }\r | |
529 | \r | |
530 | ON_EXIT:\r | |
531 | //\r | |
532 | // Free the resources, then if !EFI_ERROR (Status) and not completed,\r | |
533 | // restart the receive, otherwise end the session.\r | |
534 | //\r | |
535 | if (Packet != NULL && TotalNum > 1) {\r | |
536 | FreePool (Packet);\r | |
537 | }\r | |
538 | \r | |
539 | if (UdpPacket != NULL) {\r | |
540 | NetbufFree (UdpPacket);\r | |
541 | }\r | |
542 | \r | |
543 | if (!EFI_ERROR (Status) && !IsCompleted) {\r | |
544 | Status = UdpIoRecvDatagram (\r | |
545 | Instance->UdpIo,\r | |
546 | Mtftp6WrqInput,\r | |
547 | Instance,\r | |
548 | 0\r | |
549 | );\r | |
550 | }\r | |
551 | //\r | |
552 | // Clean up the current session if failed to continue.\r | |
553 | //\r | |
554 | if (EFI_ERROR (Status) || IsCompleted) {\r | |
555 | Mtftp6OperationClean (Instance, Status);\r | |
556 | }\r | |
557 | }\r | |
558 | \r | |
559 | \r | |
560 | /**\r | |
561 | Start the Mtftp6 instance to upload. It will first init some states,\r | |
562 | then send the WRQ request packet, and start to receive the packet.\r | |
563 | \r | |
564 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
565 | @param[in] Operation The operation code of the current packet.\r | |
566 | \r | |
567 | @retval EFI_SUCCESS The Mtftp6 was started to upload.\r | |
568 | @retval Others Failed to start to upload.\r | |
569 | \r | |
570 | **/\r | |
571 | EFI_STATUS\r | |
572 | Mtftp6WrqStart (\r | |
573 | IN MTFTP6_INSTANCE *Instance,\r | |
574 | IN UINT16 Operation\r | |
575 | )\r | |
576 | {\r | |
577 | EFI_STATUS Status;\r | |
578 | \r | |
579 | //\r | |
580 | // The valid block number range are [0, 0xffff]. For example:\r | |
581 | // the client sends an WRQ request to the server, the server\r | |
582 | // ACK with an ACK0 to let client start transfer the first\r | |
583 | // packet.\r | |
584 | //\r | |
585 | Status = Mtftp6InitBlockRange (&Instance->BlkList, 0, 0xffff);\r | |
586 | \r | |
587 | if (EFI_ERROR (Status)) {\r | |
588 | return Status;\r | |
589 | }\r | |
590 | \r | |
591 | Status = Mtftp6SendRequest (Instance, Operation);\r | |
592 | \r | |
593 | if (EFI_ERROR (Status)) {\r | |
594 | return Status;\r | |
595 | }\r | |
596 | \r | |
597 | return UdpIoRecvDatagram (\r | |
598 | Instance->UdpIo,\r | |
599 | Mtftp6WrqInput,\r | |
600 | Instance,\r | |
601 | 0\r | |
602 | );\r | |
603 | }\r | |
604 | \r |