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Commit | Line | Data |
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a3bcde70 HT |
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 | 5 | \r |
ecf98fbc | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a3bcde70 HT |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "Mtftp6Impl.h"\r | |
11 | \r | |
a3bcde70 HT |
12 | /**\r |
13 | Build and send a Mtftp6 data packet for upload.\r | |
14 | \r | |
15 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
16 | @param[in] BlockNum The block num to be sent.\r | |
17 | \r | |
18 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet.\r | |
19 | @retval EFI_SUCCESS The data packet was sent.\r | |
20 | @retval EFI_ABORTED The user aborted this process.\r | |
21 | \r | |
22 | **/\r | |
23 | EFI_STATUS\r | |
24 | Mtftp6WrqSendBlock (\r | |
d1050b9d MK |
25 | IN MTFTP6_INSTANCE *Instance,\r |
26 | IN UINT16 BlockNum\r | |
a3bcde70 HT |
27 | )\r |
28 | {\r | |
d1050b9d MK |
29 | EFI_MTFTP6_PACKET *Packet;\r |
30 | EFI_MTFTP6_TOKEN *Token;\r | |
31 | NET_BUF *UdpPacket;\r | |
32 | EFI_STATUS Status;\r | |
33 | UINT16 DataLen;\r | |
34 | UINT8 *DataBuf;\r | |
35 | UINT64 Start;\r | |
a3bcde70 HT |
36 | \r |
37 | //\r | |
38 | // Allocate net buffer to create data packet.\r | |
39 | //\r | |
40 | UdpPacket = NetbufAlloc (Instance->BlkSize + MTFTP6_DATA_HEAD_LEN);\r | |
41 | \r | |
42 | if (UdpPacket == NULL) {\r | |
43 | return EFI_OUT_OF_RESOURCES;\r | |
44 | }\r | |
45 | \r | |
d1050b9d MK |
46 | Packet = (EFI_MTFTP6_PACKET *)NetbufAllocSpace (\r |
47 | UdpPacket,\r | |
48 | MTFTP6_DATA_HEAD_LEN,\r | |
49 | FALSE\r | |
50 | );\r | |
a3bcde70 HT |
51 | ASSERT (Packet != NULL);\r |
52 | \r | |
53 | Packet->Data.OpCode = HTONS (EFI_MTFTP6_OPCODE_DATA);\r | |
54 | Packet->Data.Block = HTONS (BlockNum);\r | |
55 | \r | |
56 | //\r | |
57 | // Read the block from either the buffer or PacketNeeded callback\r | |
58 | //\r | |
59 | Token = Instance->Token;\r | |
60 | DataLen = Instance->BlkSize;\r | |
61 | \r | |
62 | if (Token->Buffer != NULL) {\r | |
63 | Start = MultU64x32 (BlockNum - 1, Instance->BlkSize);\r | |
64 | \r | |
65 | if (Token->BufferSize < Start + Instance->BlkSize) {\r | |
d1050b9d | 66 | DataLen = (UINT16)(Token->BufferSize - Start);\r |
a3bcde70 HT |
67 | Instance->LastBlk = BlockNum;\r |
68 | Mtftp6SetLastBlockNum (&Instance->BlkList, BlockNum);\r | |
69 | }\r | |
70 | \r | |
71 | if (DataLen > 0) {\r | |
72 | NetbufAllocSpace (UdpPacket, DataLen, FALSE);\r | |
d1050b9d | 73 | CopyMem (Packet->Data.Data, (UINT8 *)Token->Buffer + Start, DataLen);\r |
a3bcde70 | 74 | }\r |
a3bcde70 HT |
75 | } else {\r |
76 | //\r | |
77 | // Get data from PacketNeeded\r | |
78 | //\r | |
79 | DataBuf = NULL;\r | |
d1050b9d | 80 | Status = Token->PacketNeeded (&Instance->Mtftp6, Token, &DataLen, (VOID *)&DataBuf);\r |
a3bcde70 HT |
81 | \r |
82 | if (EFI_ERROR (Status) || (DataLen > Instance->BlkSize)) {\r | |
83 | if (DataBuf != NULL) {\r | |
84 | gBS->FreePool (DataBuf);\r | |
85 | }\r | |
d1050b9d | 86 | \r |
a3bcde70 HT |
87 | //\r |
88 | // The received packet has already been freed.\r | |
89 | //\r | |
90 | Mtftp6SendError (\r | |
91 | Instance,\r | |
92 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
d1050b9d | 93 | (UINT8 *)"User aborted the transfer"\r |
a3bcde70 HT |
94 | );\r |
95 | \r | |
96 | return EFI_ABORTED;\r | |
97 | }\r | |
98 | \r | |
99 | if (DataLen < Instance->BlkSize) {\r | |
100 | Instance->LastBlk = BlockNum;\r | |
101 | Mtftp6SetLastBlockNum (&Instance->BlkList, BlockNum);\r | |
102 | }\r | |
103 | \r | |
104 | if (DataLen > 0) {\r | |
105 | NetbufAllocSpace (UdpPacket, DataLen, FALSE);\r | |
106 | CopyMem (Packet->Data.Data, DataBuf, DataLen);\r | |
107 | gBS->FreePool (DataBuf);\r | |
108 | }\r | |
109 | }\r | |
110 | \r | |
111 | //\r | |
112 | // Reset current retry count of the instance.\r | |
113 | //\r | |
114 | Instance->CurRetry = 0;\r | |
115 | \r | |
116 | return Mtftp6TransmitPacket (Instance, UdpPacket);\r | |
117 | }\r | |
118 | \r | |
a3bcde70 HT |
119 | /**\r |
120 | Function to handle received ACK packet. If the ACK number matches the\r | |
121 | expected block number, with more data pending, send the next\r | |
122 | block. Otherwise, tell the caller that we are done.\r | |
123 | \r | |
124 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
125 | @param[in] Packet The pointer to the received packet.\r | |
126 | @param[in] Len The length of the packet.\r | |
127 | @param[out] UdpPacket The net buf of received packet.\r | |
128 | @param[out] IsCompleted If TRUE, the upload has been completed.\r | |
129 | Otherwise, the upload has not been completed.\r | |
130 | \r | |
131 | @retval EFI_SUCCESS The ACK packet successfully processed.\r | |
132 | @retval EFI_TFTP_ERROR The block number loops back.\r | |
133 | @retval Others Failed to transmit the next data packet.\r | |
134 | \r | |
135 | **/\r | |
136 | EFI_STATUS\r | |
137 | Mtftp6WrqHandleAck (\r | |
d1050b9d MK |
138 | IN MTFTP6_INSTANCE *Instance,\r |
139 | IN EFI_MTFTP6_PACKET *Packet,\r | |
140 | IN UINT32 Len,\r | |
141 | OUT NET_BUF **UdpPacket,\r | |
142 | OUT BOOLEAN *IsCompleted\r | |
a3bcde70 HT |
143 | )\r |
144 | {\r | |
d1050b9d MK |
145 | UINT16 AckNum;\r |
146 | INTN Expected;\r | |
147 | UINT64 BlockCounter;\r | |
a3bcde70 HT |
148 | \r |
149 | *IsCompleted = FALSE;\r | |
150 | AckNum = NTOHS (Packet->Ack.Block[0]);\r | |
151 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
152 | \r | |
153 | ASSERT (Expected >= 0);\r | |
154 | \r | |
155 | //\r | |
156 | // Get an unwanted ACK, return EFI_SUCCESS to let Mtftp6WrqInput\r | |
157 | // restart receive.\r | |
158 | //\r | |
159 | if (Expected != AckNum) {\r | |
160 | return EFI_SUCCESS;\r | |
161 | }\r | |
162 | \r | |
163 | //\r | |
164 | // Remove the acked block number, if this is the last block number,\r | |
165 | // tell the Mtftp6WrqInput to finish the transfer. This is the last\r | |
2f6693c2 | 166 | // block number if the block range are empty.\r |
a3bcde70 | 167 | //\r |
2f6693c2 | 168 | Mtftp6RemoveBlockNum (&Instance->BlkList, AckNum, *IsCompleted, &BlockCounter);\r |
a3bcde70 HT |
169 | \r |
170 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
171 | \r | |
172 | if (Expected < 0) {\r | |
173 | //\r | |
f6c8bbbe | 174 | // The block range is empty. It may either because the last\r |
a3bcde70 HT |
175 | // block has been ACKed, or the sequence number just looped back,\r |
176 | // that is, there is more than 0xffff blocks.\r | |
177 | //\r | |
178 | if (Instance->LastBlk == AckNum) {\r | |
179 | ASSERT (Instance->LastBlk >= 1);\r | |
180 | *IsCompleted = TRUE;\r | |
181 | return EFI_SUCCESS;\r | |
a3bcde70 HT |
182 | } else {\r |
183 | //\r | |
184 | // Free the received packet before send new packet in ReceiveNotify,\r | |
185 | // since the udpio might need to be reconfigured.\r | |
186 | //\r | |
187 | NetbufFree (*UdpPacket);\r | |
188 | *UdpPacket = NULL;\r | |
189 | //\r | |
190 | // Send the Mtftp6 error message if block number rolls back.\r | |
191 | //\r | |
192 | Mtftp6SendError (\r | |
193 | Instance,\r | |
194 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
d1050b9d | 195 | (UINT8 *)"Block number rolls back, not supported, try blksize option"\r |
a3bcde70 HT |
196 | );\r |
197 | \r | |
198 | return EFI_TFTP_ERROR;\r | |
199 | }\r | |
200 | }\r | |
201 | \r | |
202 | //\r | |
203 | // Free the receive buffer before send new packet since it might need\r | |
204 | // reconfigure udpio.\r | |
205 | //\r | |
206 | NetbufFree (*UdpPacket);\r | |
207 | *UdpPacket = NULL;\r | |
208 | \r | |
d1050b9d | 209 | return Mtftp6WrqSendBlock (Instance, (UINT16)Expected);\r |
a3bcde70 HT |
210 | }\r |
211 | \r | |
a3bcde70 HT |
212 | /**\r |
213 | Check whether the received OACK is valid. The OACK is valid\r | |
214 | only if:\r | |
215 | 1. It only include options requested by us.\r | |
216 | 2. It can only include a smaller block size.\r | |
217 | 3. It can't change the proposed time out value.\r | |
218 | 4. Other requirements of the individal MTFTP6 options as required.\r | |
219 | \r | |
220 | @param[in] ReplyInfo The pointer to options information in reply packet.\r | |
221 | @param[in] RequestInfo The pointer to requested options information.\r | |
222 | \r | |
223 | @retval TRUE If the option in OACK is valid.\r | |
224 | @retval FALSE If the option is invalid.\r | |
225 | \r | |
226 | **/\r | |
227 | BOOLEAN\r | |
228 | Mtftp6WrqOackValid (\r | |
d1050b9d MK |
229 | IN MTFTP6_EXT_OPTION_INFO *ReplyInfo,\r |
230 | IN MTFTP6_EXT_OPTION_INFO *RequestInfo\r | |
a3bcde70 HT |
231 | )\r |
232 | {\r | |
233 | //\r | |
234 | // It is invalid for server to return options we don't request\r | |
235 | //\r | |
236 | if ((ReplyInfo->BitMap & ~RequestInfo->BitMap) != 0) {\r | |
237 | return FALSE;\r | |
238 | }\r | |
239 | \r | |
240 | //\r | |
241 | // Server can only specify a smaller block size to be used and\r | |
242 | // return the timeout matches that requested.\r | |
243 | //\r | |
244 | if ((((ReplyInfo->BitMap & MTFTP6_OPT_BLKSIZE_BIT) != 0) && (ReplyInfo->BlkSize > RequestInfo->BlkSize)) ||\r | |
245 | (((ReplyInfo->BitMap & MTFTP6_OPT_TIMEOUT_BIT) != 0) && (ReplyInfo->Timeout != RequestInfo->Timeout))\r | |
d1050b9d MK |
246 | )\r |
247 | {\r | |
a3bcde70 HT |
248 | return FALSE;\r |
249 | }\r | |
250 | \r | |
251 | return TRUE;\r | |
252 | }\r | |
253 | \r | |
a3bcde70 HT |
254 | /**\r |
255 | Process the OACK packet for Wrq.\r | |
256 | \r | |
257 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
258 | @param[in] Packet The pointer to the received packet.\r | |
259 | @param[in] Len The length of the packet.\r | |
260 | @param[out] UdpPacket The net buf of received packet.\r | |
261 | @param[out] IsCompleted If TRUE, the upload has been completed.\r | |
262 | Otherwise, the upload has not been completed.\r | |
263 | \r | |
264 | @retval EFI_SUCCESS The OACK packet successfully processed.\r | |
265 | @retval EFI_TFTP_ERROR An TFTP communication error happened.\r | |
266 | @retval Others Failed to process the OACK packet.\r | |
267 | \r | |
268 | **/\r | |
269 | EFI_STATUS\r | |
270 | Mtftp6WrqHandleOack (\r | |
d1050b9d MK |
271 | IN MTFTP6_INSTANCE *Instance,\r |
272 | IN EFI_MTFTP6_PACKET *Packet,\r | |
273 | IN UINT32 Len,\r | |
274 | OUT NET_BUF **UdpPacket,\r | |
275 | OUT BOOLEAN *IsCompleted\r | |
a3bcde70 HT |
276 | )\r |
277 | {\r | |
d1050b9d MK |
278 | EFI_MTFTP6_OPTION *Options;\r |
279 | UINT32 Count;\r | |
280 | MTFTP6_EXT_OPTION_INFO ExtInfo;\r | |
281 | EFI_MTFTP6_PACKET Dummy;\r | |
282 | EFI_STATUS Status;\r | |
283 | INTN Expected;\r | |
a3bcde70 HT |
284 | \r |
285 | *IsCompleted = FALSE;\r | |
d1050b9d | 286 | Options = NULL;\r |
a3bcde70 HT |
287 | \r |
288 | //\r | |
289 | // Ignore the OACK if already started the upload\r | |
290 | //\r | |
291 | Expected = Mtftp6GetNextBlockNum (&Instance->BlkList);\r | |
292 | \r | |
293 | if (Expected != 0) {\r | |
294 | return EFI_SUCCESS;\r | |
295 | }\r | |
296 | \r | |
297 | //\r | |
298 | // Parse and validate the options from server\r | |
299 | //\r | |
300 | ZeroMem (&ExtInfo, sizeof (MTFTP6_EXT_OPTION_INFO));\r | |
301 | \r | |
302 | Status = Mtftp6ParseStart (Packet, Len, &Count, &Options);\r | |
303 | \r | |
304 | if (EFI_ERROR (Status)) {\r | |
305 | return Status;\r | |
306 | }\r | |
d1050b9d | 307 | \r |
7a49cd08 | 308 | ASSERT (Options != NULL);\r |
a3bcde70 | 309 | \r |
f3427f12 | 310 | Status = Mtftp6ParseExtensionOption (Options, Count, FALSE, Instance->Operation, &ExtInfo);\r |
a3bcde70 | 311 | \r |
d1050b9d | 312 | if (EFI_ERROR (Status) || !Mtftp6WrqOackValid (&ExtInfo, &Instance->ExtInfo)) {\r |
a3bcde70 HT |
313 | //\r |
314 | // Don't send a MTFTP error packet when out of resource, it can\r | |
315 | // only make it worse.\r | |
316 | //\r | |
317 | if (Status != EFI_OUT_OF_RESOURCES) {\r | |
318 | //\r | |
319 | // Free the received packet before send new packet in ReceiveNotify,\r | |
320 | // since the udpio might need to be reconfigured.\r | |
321 | //\r | |
322 | NetbufFree (*UdpPacket);\r | |
323 | *UdpPacket = NULL;\r | |
324 | //\r | |
325 | // Send the Mtftp6 error message if invalid Oack packet received.\r | |
326 | //\r | |
327 | Mtftp6SendError (\r | |
328 | Instance,\r | |
329 | EFI_MTFTP6_ERRORCODE_ILLEGAL_OPERATION,\r | |
d1050b9d | 330 | (UINT8 *)"Malformatted OACK packet"\r |
a3bcde70 HT |
331 | );\r |
332 | }\r | |
333 | \r | |
334 | return EFI_TFTP_ERROR;\r | |
335 | }\r | |
336 | \r | |
337 | if (ExtInfo.BlkSize != 0) {\r | |
338 | Instance->BlkSize = ExtInfo.BlkSize;\r | |
339 | }\r | |
340 | \r | |
341 | if (ExtInfo.Timeout != 0) {\r | |
342 | Instance->Timeout = ExtInfo.Timeout;\r | |
343 | }\r | |
344 | \r | |
345 | //\r | |
346 | // Build a bogus ACK0 packet then pass it to the Mtftp6WrqHandleAck,\r | |
347 | // which will start the transmission of the first data block.\r | |
348 | //\r | |
349 | Dummy.Ack.OpCode = HTONS (EFI_MTFTP6_OPCODE_ACK);\r | |
350 | Dummy.Ack.Block[0] = 0;\r | |
351 | \r | |
352 | return Mtftp6WrqHandleAck (\r | |
353 | Instance,\r | |
354 | &Dummy,\r | |
355 | sizeof (EFI_MTFTP6_ACK_HEADER),\r | |
356 | UdpPacket,\r | |
357 | IsCompleted\r | |
358 | );\r | |
359 | }\r | |
360 | \r | |
a3bcde70 HT |
361 | /**\r |
362 | The packet process callback for Mtftp6 upload.\r | |
363 | \r | |
364 | @param[in] UdpPacket The pointer to the packet received.\r | |
365 | @param[in] UdpEpt The pointer to the Udp6 access point.\r | |
366 | @param[in] IoStatus The status from Udp6 instance.\r | |
367 | @param[in] Context The pointer to the context.\r | |
368 | \r | |
369 | **/\r | |
370 | VOID\r | |
371 | EFIAPI\r | |
372 | Mtftp6WrqInput (\r | |
d1050b9d MK |
373 | IN NET_BUF *UdpPacket,\r |
374 | IN UDP_END_POINT *UdpEpt,\r | |
375 | IN EFI_STATUS IoStatus,\r | |
376 | IN VOID *Context\r | |
a3bcde70 HT |
377 | )\r |
378 | {\r | |
d1050b9d MK |
379 | MTFTP6_INSTANCE *Instance;\r |
380 | EFI_MTFTP6_PACKET *Packet;\r | |
381 | BOOLEAN IsCompleted;\r | |
382 | EFI_STATUS Status;\r | |
383 | UINT32 TotalNum;\r | |
384 | UINT32 Len;\r | |
385 | UINT16 Opcode;\r | |
a3bcde70 | 386 | \r |
d1050b9d | 387 | Instance = (MTFTP6_INSTANCE *)Context;\r |
a3bcde70 HT |
388 | \r |
389 | NET_CHECK_SIGNATURE (Instance, MTFTP6_INSTANCE_SIGNATURE);\r | |
390 | \r | |
391 | IsCompleted = FALSE;\r | |
392 | Packet = NULL;\r | |
393 | Status = EFI_SUCCESS;\r | |
394 | TotalNum = 0;\r | |
395 | \r | |
396 | //\r | |
397 | // Return error status if Udp6 instance failed to receive.\r | |
398 | //\r | |
399 | if (EFI_ERROR (IoStatus)) {\r | |
400 | Status = IoStatus;\r | |
401 | goto ON_EXIT;\r | |
402 | }\r | |
403 | \r | |
404 | ASSERT (UdpPacket != NULL);\r | |
405 | \r | |
406 | if (UdpPacket->TotalSize < MTFTP6_OPCODE_LEN) {\r | |
407 | goto ON_EXIT;\r | |
408 | }\r | |
409 | \r | |
410 | //\r | |
411 | // Client send initial request to server's listening port. Server\r | |
412 | // will select a UDP port to communicate with the client.\r | |
413 | //\r | |
414 | if (UdpEpt->RemotePort != Instance->ServerDataPort) {\r | |
415 | if (Instance->ServerDataPort != 0) {\r | |
416 | goto ON_EXIT;\r | |
417 | } else {\r | |
418 | Instance->ServerDataPort = UdpEpt->RemotePort;\r | |
419 | }\r | |
420 | }\r | |
421 | \r | |
422 | //\r | |
423 | // Copy the MTFTP packet to a continuous buffer if it isn't already so.\r | |
424 | //\r | |
425 | Len = UdpPacket->TotalSize;\r | |
426 | TotalNum = UdpPacket->BlockOpNum;\r | |
427 | \r | |
428 | if (TotalNum > 1) {\r | |
429 | Packet = AllocateZeroPool (Len);\r | |
430 | \r | |
431 | if (Packet == NULL) {\r | |
432 | Status = EFI_OUT_OF_RESOURCES;\r | |
433 | goto ON_EXIT;\r | |
434 | }\r | |
435 | \r | |
d1050b9d | 436 | NetbufCopy (UdpPacket, 0, Len, (UINT8 *)Packet);\r |
a3bcde70 | 437 | } else {\r |
d1050b9d | 438 | Packet = (EFI_MTFTP6_PACKET *)NetbufGetByte (UdpPacket, 0, NULL);\r |
a3bcde70 HT |
439 | ASSERT (Packet != NULL);\r |
440 | }\r | |
441 | \r | |
442 | Opcode = NTOHS (Packet->OpCode);\r | |
443 | \r | |
444 | //\r | |
445 | // Callback to the user's CheckPacket if provided. Abort the transmission\r | |
446 | // if CheckPacket returns an EFI_ERROR code.\r | |
447 | //\r | |
d1050b9d MK |
448 | if ((Instance->Token->CheckPacket != NULL) &&\r |
449 | ((Opcode == EFI_MTFTP6_OPCODE_OACK) || (Opcode == EFI_MTFTP6_OPCODE_ERROR))\r | |
450 | )\r | |
451 | {\r | |
a3bcde70 HT |
452 | Status = Instance->Token->CheckPacket (\r |
453 | &Instance->Mtftp6,\r | |
454 | Instance->Token,\r | |
d1050b9d | 455 | (UINT16)Len,\r |
a3bcde70 HT |
456 | Packet\r |
457 | );\r | |
458 | \r | |
459 | if (EFI_ERROR (Status)) {\r | |
460 | //\r | |
461 | // Send an error message to the server to inform it\r | |
462 | //\r | |
463 | if (Opcode != EFI_MTFTP6_OPCODE_ERROR) {\r | |
464 | //\r | |
465 | // Free the received packet before send new packet in ReceiveNotify,\r | |
466 | // since the udpio might need to be reconfigured.\r | |
467 | //\r | |
468 | NetbufFree (UdpPacket);\r | |
469 | UdpPacket = NULL;\r | |
470 | //\r | |
471 | // Send the Mtftp6 error message if user aborted the current session.\r | |
472 | //\r | |
473 | Mtftp6SendError (\r | |
474 | Instance,\r | |
475 | EFI_MTFTP6_ERRORCODE_REQUEST_DENIED,\r | |
d1050b9d | 476 | (UINT8 *)"User aborted the transfer"\r |
a3bcde70 HT |
477 | );\r |
478 | }\r | |
479 | \r | |
480 | Status = EFI_ABORTED;\r | |
481 | goto ON_EXIT;\r | |
482 | }\r | |
483 | }\r | |
484 | \r | |
485 | //\r | |
486 | // Switch the process routines by the operation code.\r | |
487 | //\r | |
488 | switch (Opcode) {\r | |
d1050b9d MK |
489 | case EFI_MTFTP6_OPCODE_ACK:\r |
490 | if (Len != MTFTP6_OPCODE_LEN + MTFTP6_BLKNO_LEN) {\r | |
491 | goto ON_EXIT;\r | |
492 | }\r | |
a3bcde70 | 493 | \r |
d1050b9d MK |
494 | //\r |
495 | // Handle the Ack packet of Wrq.\r | |
496 | //\r | |
497 | Status = Mtftp6WrqHandleAck (Instance, Packet, Len, &UdpPacket, &IsCompleted);\r | |
498 | break;\r | |
a3bcde70 | 499 | \r |
d1050b9d MK |
500 | case EFI_MTFTP6_OPCODE_OACK:\r |
501 | if (Len <= MTFTP6_OPCODE_LEN) {\r | |
502 | goto ON_EXIT;\r | |
503 | }\r | |
504 | \r | |
505 | //\r | |
506 | // Handle the Oack packet of Wrq.\r | |
507 | //\r | |
508 | Status = Mtftp6WrqHandleOack (Instance, Packet, Len, &UdpPacket, &IsCompleted);\r | |
509 | break;\r | |
510 | \r | |
511 | default:\r | |
512 | //\r | |
513 | // Drop and return eror if received error message.\r | |
514 | //\r | |
515 | Status = EFI_TFTP_ERROR;\r | |
516 | break;\r | |
a3bcde70 HT |
517 | }\r |
518 | \r | |
519 | ON_EXIT:\r | |
520 | //\r | |
521 | // Free the resources, then if !EFI_ERROR (Status) and not completed,\r | |
522 | // restart the receive, otherwise end the session.\r | |
523 | //\r | |
d1050b9d | 524 | if ((Packet != NULL) && (TotalNum > 1)) {\r |
a3bcde70 HT |
525 | FreePool (Packet);\r |
526 | }\r | |
527 | \r | |
528 | if (UdpPacket != NULL) {\r | |
529 | NetbufFree (UdpPacket);\r | |
530 | }\r | |
531 | \r | |
532 | if (!EFI_ERROR (Status) && !IsCompleted) {\r | |
533 | Status = UdpIoRecvDatagram (\r | |
534 | Instance->UdpIo,\r | |
535 | Mtftp6WrqInput,\r | |
536 | Instance,\r | |
537 | 0\r | |
538 | );\r | |
539 | }\r | |
d1050b9d | 540 | \r |
a3bcde70 HT |
541 | //\r |
542 | // Clean up the current session if failed to continue.\r | |
543 | //\r | |
544 | if (EFI_ERROR (Status) || IsCompleted) {\r | |
545 | Mtftp6OperationClean (Instance, Status);\r | |
546 | }\r | |
547 | }\r | |
548 | \r | |
a3bcde70 HT |
549 | /**\r |
550 | Start the Mtftp6 instance to upload. It will first init some states,\r | |
551 | then send the WRQ request packet, and start to receive the packet.\r | |
552 | \r | |
553 | @param[in] Instance The pointer to the Mtftp6 instance.\r | |
554 | @param[in] Operation The operation code of the current packet.\r | |
555 | \r | |
556 | @retval EFI_SUCCESS The Mtftp6 was started to upload.\r | |
557 | @retval Others Failed to start to upload.\r | |
558 | \r | |
559 | **/\r | |
560 | EFI_STATUS\r | |
561 | Mtftp6WrqStart (\r | |
d1050b9d MK |
562 | IN MTFTP6_INSTANCE *Instance,\r |
563 | IN UINT16 Operation\r | |
a3bcde70 HT |
564 | )\r |
565 | {\r | |
d1050b9d | 566 | EFI_STATUS Status;\r |
a3bcde70 HT |
567 | \r |
568 | //\r | |
569 | // The valid block number range are [0, 0xffff]. For example:\r | |
570 | // the client sends an WRQ request to the server, the server\r | |
571 | // ACK with an ACK0 to let client start transfer the first\r | |
572 | // packet.\r | |
573 | //\r | |
574 | Status = Mtftp6InitBlockRange (&Instance->BlkList, 0, 0xffff);\r | |
575 | \r | |
576 | if (EFI_ERROR (Status)) {\r | |
577 | return Status;\r | |
578 | }\r | |
579 | \r | |
580 | Status = Mtftp6SendRequest (Instance, Operation);\r | |
581 | \r | |
582 | if (EFI_ERROR (Status)) {\r | |
583 | return Status;\r | |
584 | }\r | |
585 | \r | |
586 | return UdpIoRecvDatagram (\r | |
587 | Instance->UdpIo,\r | |
588 | Mtftp6WrqInput,\r | |
589 | Instance,\r | |
590 | 0\r | |
591 | );\r | |
592 | }\r |