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772db4bb | 1 | /** @file\r |
dab714aa | 2 | Support routines for Mtftp.\r |
3 | \r | |
f1f11ea2 | 4 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 5 | This program and the accompanying materials\r |
772db4bb | 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 | |
dab714aa | 8 | http://opensource.org/licenses/bsd-license.php<BR>\r |
772db4bb | 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 | |
12 | \r | |
772db4bb | 13 | **/\r |
14 | \r | |
15 | #include "Mtftp4Impl.h"\r | |
16 | \r | |
17 | \r | |
18 | /**\r | |
dab714aa | 19 | Allocate a MTFTP4 block range, then init it to the range of [Start, End]\r |
772db4bb | 20 | \r |
21 | @param Start The start block number\r | |
22 | @param End The last block number in the range\r | |
23 | \r | |
dab714aa | 24 | @return Pointer to the created block range, NULL if failed to allocate memory.\r |
772db4bb | 25 | \r |
26 | **/\r | |
772db4bb | 27 | MTFTP4_BLOCK_RANGE *\r |
28 | Mtftp4AllocateRange (\r | |
29 | IN UINT16 Start,\r | |
30 | IN UINT16 End\r | |
31 | )\r | |
32 | {\r | |
33 | MTFTP4_BLOCK_RANGE *Range;\r | |
34 | \r | |
f1f11ea2 | 35 | Range = AllocateZeroPool (sizeof (MTFTP4_BLOCK_RANGE));\r |
772db4bb | 36 | \r |
37 | if (Range == NULL) {\r | |
38 | return NULL;\r | |
39 | }\r | |
40 | \r | |
e48e37fc | 41 | InitializeListHead (&Range->Link);\r |
772db4bb | 42 | Range->Start = Start;\r |
43 | Range->End = End;\r | |
f1f11ea2 | 44 | Range->Bound = End;\r |
772db4bb | 45 | \r |
46 | return Range;\r | |
47 | }\r | |
48 | \r | |
49 | \r | |
50 | /**\r | |
dab714aa | 51 | Initialize the block range for either RRQ or WRQ. \r |
52 | \r | |
53 | RRQ and WRQ have different requirements for Start and End. \r | |
54 | For example, during start up, WRQ initializes its whole valid block range \r | |
55 | to [0, 0xffff]. This is bacause the server will send us a ACK0 to inform us \r | |
56 | to start the upload. When the client received ACK0, it will remove 0 from the \r | |
57 | range, get the next block number, which is 1, then upload the BLOCK1. For RRQ\r | |
58 | without option negotiation, the server will directly send us the BLOCK1 in \r | |
59 | response to the client's RRQ. When received BLOCK1, the client will remove \r | |
60 | it from the block range and send an ACK. It also works if there is option \r | |
61 | negotiation.\r | |
772db4bb | 62 | \r |
63 | @param Head The block range head to initialize\r | |
64 | @param Start The Start block number.\r | |
65 | @param End The last block number.\r | |
66 | \r | |
67 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for initial block range\r | |
68 | @retval EFI_SUCCESS The initial block range is created.\r | |
69 | \r | |
70 | **/\r | |
71 | EFI_STATUS\r | |
72 | Mtftp4InitBlockRange (\r | |
e48e37fc | 73 | IN LIST_ENTRY *Head,\r |
772db4bb | 74 | IN UINT16 Start,\r |
75 | IN UINT16 End\r | |
76 | )\r | |
77 | {\r | |
78 | MTFTP4_BLOCK_RANGE *Range;\r | |
79 | \r | |
80 | Range = Mtftp4AllocateRange (Start, End);\r | |
81 | \r | |
82 | if (Range == NULL) {\r | |
83 | return EFI_OUT_OF_RESOURCES;\r | |
84 | }\r | |
85 | \r | |
e48e37fc | 86 | InsertTailList (Head, &Range->Link);\r |
772db4bb | 87 | return EFI_SUCCESS;\r |
88 | }\r | |
89 | \r | |
90 | \r | |
91 | /**\r | |
92 | Get the first valid block number on the range list.\r | |
93 | \r | |
94 | @param Head The block range head\r | |
95 | \r | |
dab714aa | 96 | @return The first valid block number, -1 if the block range is empty. \r |
772db4bb | 97 | \r |
98 | **/\r | |
99 | INTN\r | |
100 | Mtftp4GetNextBlockNum (\r | |
e48e37fc | 101 | IN LIST_ENTRY *Head\r |
772db4bb | 102 | )\r |
103 | {\r | |
104 | MTFTP4_BLOCK_RANGE *Range;\r | |
105 | \r | |
e48e37fc | 106 | if (IsListEmpty (Head)) {\r |
772db4bb | 107 | return -1;\r |
108 | }\r | |
109 | \r | |
110 | Range = NET_LIST_HEAD (Head, MTFTP4_BLOCK_RANGE, Link);\r | |
111 | return Range->Start;\r | |
112 | }\r | |
113 | \r | |
114 | \r | |
115 | /**\r | |
dab714aa | 116 | Set the last block number of the block range list. \r |
117 | \r | |
118 | It will remove all the blocks after the Last. MTFTP initialize the block range\r | |
119 | to the maximum possible range, such as [0, 0xffff] for WRQ. When it gets the \r | |
120 | last block number, it will call this function to set the last block number.\r | |
772db4bb | 121 | \r |
122 | @param Head The block range list\r | |
123 | @param Last The last block number\r | |
124 | \r | |
772db4bb | 125 | **/\r |
126 | VOID\r | |
127 | Mtftp4SetLastBlockNum (\r | |
e48e37fc | 128 | IN LIST_ENTRY *Head,\r |
772db4bb | 129 | IN UINT16 Last\r |
130 | )\r | |
131 | {\r | |
132 | MTFTP4_BLOCK_RANGE *Range;\r | |
133 | \r | |
134 | //\r | |
135 | // Iterate from the tail to head to remove the block number\r | |
136 | // after the last.\r | |
137 | //\r | |
e48e37fc | 138 | while (!IsListEmpty (Head)) {\r |
772db4bb | 139 | Range = NET_LIST_TAIL (Head, MTFTP4_BLOCK_RANGE, Link);\r |
140 | \r | |
141 | if (Range->Start > Last) {\r | |
e48e37fc | 142 | RemoveEntryList (&Range->Link);\r |
766c7483 | 143 | FreePool (Range);\r |
772db4bb | 144 | continue;\r |
145 | }\r | |
146 | \r | |
147 | if (Range->End > Last) {\r | |
148 | Range->End = Last;\r | |
149 | }\r | |
150 | \r | |
151 | return ;\r | |
152 | }\r | |
153 | }\r | |
154 | \r | |
155 | \r | |
156 | /**\r | |
157 | Remove the block number from the block range list.\r | |
158 | \r | |
159 | @param Head The block range list to remove from\r | |
160 | @param Num The block number to remove\r | |
49fd66cb | 161 | @param Completed Whether Num is the last block number\r |
f1f11ea2 | 162 | @param TotalBlock The continuous block number in all \r |
772db4bb | 163 | \r |
164 | @retval EFI_NOT_FOUND The block number isn't in the block range list\r | |
165 | @retval EFI_SUCCESS The block number has been removed from the list\r | |
166 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource\r | |
167 | \r | |
168 | **/\r | |
169 | EFI_STATUS\r | |
170 | Mtftp4RemoveBlockNum (\r | |
e48e37fc | 171 | IN LIST_ENTRY *Head,\r |
f1f11ea2 | 172 | IN UINT16 Num,\r |
49fd66cb | 173 | IN BOOLEAN Completed,\r |
f1f11ea2 | 174 | OUT UINT64 *TotalBlock\r |
772db4bb | 175 | )\r |
176 | {\r | |
177 | MTFTP4_BLOCK_RANGE *Range;\r | |
178 | MTFTP4_BLOCK_RANGE *NewRange;\r | |
e48e37fc | 179 | LIST_ENTRY *Entry;\r |
772db4bb | 180 | \r |
181 | NET_LIST_FOR_EACH (Entry, Head) {\r | |
182 | \r | |
183 | //\r | |
184 | // Each block represents a hole [Start, End] in the file,\r | |
185 | // skip to the first range with End >= Num\r | |
186 | //\r | |
187 | Range = NET_LIST_USER_STRUCT (Entry, MTFTP4_BLOCK_RANGE, Link);\r | |
188 | \r | |
189 | if (Range->End < Num) {\r | |
190 | continue;\r | |
191 | }\r | |
192 | \r | |
193 | //\r | |
194 | // There are three different cases for Start\r | |
195 | // 1. (Start > Num) && (End >= Num):\r | |
196 | // because all the holes before this one has the condition of\r | |
197 | // End < Num, so this block number has been removed.\r | |
198 | //\r | |
199 | // 2. (Start == Num) && (End >= Num):\r | |
200 | // Need to increase the Start by one, and if End == Num, this\r | |
201 | // hole has been removed completely, remove it.\r | |
202 | //\r | |
203 | // 3. (Start < Num) && (End >= Num):\r | |
204 | // if End == Num, only need to decrease the End by one because\r | |
205 | // we have (Start < Num) && (Num == End), so (Start <= End - 1).\r | |
206 | // if (End > Num), the hold is splited into two holes, with\r | |
207 | // [Start, Num - 1] and [Num + 1, End].\r | |
208 | //\r | |
209 | if (Range->Start > Num) {\r | |
210 | return EFI_NOT_FOUND;\r | |
211 | \r | |
212 | } else if (Range->Start == Num) {\r | |
213 | Range->Start++;\r | |
214 | \r | |
f1f11ea2 | 215 | //\r |
216 | // Note that: RFC 1350 does not mention block counter roll-over, \r | |
217 | // but several TFTP hosts implement the roll-over be able to accept \r | |
218 | // transfers of unlimited size. There is no consensus, however, whether \r | |
219 | // the counter should wrap around to zero or to one. Many implementations \r | |
220 | // wrap to zero, because this is the simplest to implement. Here we choose \r | |
221 | // this solution.\r | |
222 | //\r | |
223 | *TotalBlock = Num;\r | |
224 | \r | |
225 | if (Range->Round > 0) {\r | |
226 | *TotalBlock += Range->Bound + MultU64x32 (Range->Round -1, (UINT32)(Range->Bound + 1)) + 1;\r | |
227 | }\r | |
228 | \r | |
229 | if (Range->Start > Range->Bound) {\r | |
230 | Range->Start = 0;\r | |
231 | Range->Round ++;\r | |
232 | }\r | |
233 | \r | |
49fd66cb | 234 | if ((Range->Start > Range->End) || Completed) {\r |
e48e37fc | 235 | RemoveEntryList (&Range->Link);\r |
766c7483 | 236 | FreePool (Range);\r |
772db4bb | 237 | }\r |
238 | \r | |
239 | return EFI_SUCCESS;\r | |
240 | \r | |
241 | } else {\r | |
242 | if (Range->End == Num) {\r | |
243 | Range->End--;\r | |
244 | } else {\r | |
687a2e5f | 245 | NewRange = Mtftp4AllocateRange ((UINT16) (Num + 1), (UINT16) Range->End);\r |
772db4bb | 246 | \r |
247 | if (NewRange == NULL) {\r | |
248 | return EFI_OUT_OF_RESOURCES;\r | |
249 | }\r | |
250 | \r | |
251 | Range->End = Num - 1;\r | |
252 | NetListInsertAfter (&Range->Link, &NewRange->Link);\r | |
253 | }\r | |
254 | \r | |
255 | return EFI_SUCCESS;\r | |
256 | }\r | |
257 | }\r | |
258 | \r | |
259 | return EFI_NOT_FOUND;\r | |
260 | }\r | |
261 | \r | |
262 | \r | |
263 | /**\r | |
264 | Build then transmit the request packet for the MTFTP session.\r | |
265 | \r | |
266 | @param Instance The Mtftp session\r | |
267 | \r | |
268 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the request\r | |
269 | @retval EFI_SUCCESS The request is built and sent\r | |
270 | @retval Others Failed to transmit the packet.\r | |
271 | \r | |
272 | **/\r | |
273 | EFI_STATUS\r | |
274 | Mtftp4SendRequest (\r | |
275 | IN MTFTP4_PROTOCOL *Instance\r | |
276 | )\r | |
277 | {\r | |
278 | EFI_MTFTP4_PACKET *Packet;\r | |
279 | EFI_MTFTP4_OPTION *Options;\r | |
280 | EFI_MTFTP4_TOKEN *Token;\r | |
281 | NET_BUF *Nbuf;\r | |
282 | UINT8 *Mode;\r | |
283 | UINT8 *Cur;\r | |
284 | UINT32 Len;\r | |
285 | UINTN Index;\r | |
687a2e5f | 286 | UINT32 Len1;\r |
287 | UINT32 Len2;\r | |
772db4bb | 288 | \r |
289 | Token = Instance->Token;\r | |
290 | Options = Token->OptionList;\r | |
291 | Mode = Instance->Token->ModeStr;\r | |
292 | \r | |
293 | if (Mode == NULL) {\r | |
67a58d0f | 294 | Mode = (UINT8 *) "octet";\r |
772db4bb | 295 | }\r |
296 | \r | |
297 | //\r | |
298 | // Compute the packet length\r | |
299 | //\r | |
687a2e5f | 300 | Len1 = (UINT32) AsciiStrLen ((CHAR8 *) Token->Filename);\r |
301 | Len2 = (UINT32) AsciiStrLen ((CHAR8 *) Mode);\r | |
302 | Len = (Len1 + Len2 + 4);\r | |
772db4bb | 303 | \r |
304 | for (Index = 0; Index < Token->OptionCount; Index++) {\r | |
687a2e5f | 305 | Len1 = (UINT32) AsciiStrLen ((CHAR8 *) Options[Index].OptionStr);\r |
306 | Len2 = (UINT32) AsciiStrLen ((CHAR8 *) Options[Index].ValueStr);\r | |
307 | Len += Len1 + Len2 + 2;\r | |
772db4bb | 308 | }\r |
309 | \r | |
310 | //\r | |
311 | // Allocate a packet then copy the data over\r | |
312 | //\r | |
313 | if ((Nbuf = NetbufAlloc (Len)) == NULL) {\r | |
314 | return EFI_OUT_OF_RESOURCES;\r | |
315 | }\r | |
316 | \r | |
317 | Packet = (EFI_MTFTP4_PACKET *) NetbufAllocSpace (Nbuf, Len, FALSE);\r | |
894d038a | 318 | ASSERT (Packet != NULL);\r |
319 | \r | |
772db4bb | 320 | Packet->OpCode = HTONS (Instance->Operation);\r |
321 | Cur = Packet->Rrq.Filename;\r | |
687a2e5f | 322 | Cur = (UINT8 *) AsciiStrCpy ((CHAR8 *) Cur, (CHAR8 *) Token->Filename);\r |
b7d3c631 | 323 | Cur += AsciiStrLen ((CHAR8 *) Token->Filename) + 1;\r |
687a2e5f | 324 | Cur = (UINT8 *) AsciiStrCpy ((CHAR8 *) Cur, (CHAR8 *) Mode);\r |
b7d3c631 | 325 | Cur += AsciiStrLen ((CHAR8 *) Mode) + 1;\r |
772db4bb | 326 | \r |
327 | for (Index = 0; Index < Token->OptionCount; ++Index) {\r | |
b61439a7 | 328 | Cur = (UINT8 *) AsciiStrCpy ((CHAR8 *) Cur, (CHAR8 *) Options[Index].OptionStr);\r |
b7d3c631 | 329 | Cur += AsciiStrLen ((CHAR8 *) Options[Index].OptionStr) + 1;\r |
b61439a7 | 330 | \r |
331 | Cur = (UINT8 *) AsciiStrCpy ((CHAR8 *) Cur, (CHAR8 *) Options[Index].ValueStr);\r | |
b7d3c631 | 332 | Cur += AsciiStrLen ((CHAR8 *) (CHAR8 *) Options[Index].ValueStr) + 1;\r |
772db4bb | 333 | }\r |
334 | \r | |
335 | return Mtftp4SendPacket (Instance, Nbuf);\r | |
336 | }\r | |
337 | \r | |
338 | \r | |
339 | /**\r | |
dab714aa | 340 | Build then send an error message.\r |
772db4bb | 341 | \r |
342 | @param Instance The MTFTP session\r | |
dab714aa | 343 | @param ErrCode The error code \r |
344 | @param ErrInfo The error message\r | |
772db4bb | 345 | \r |
346 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the error packet\r | |
347 | @retval EFI_SUCCESS The error packet is transmitted.\r | |
348 | @retval Others Failed to transmit the packet.\r | |
349 | \r | |
350 | **/\r | |
351 | EFI_STATUS\r | |
352 | Mtftp4SendError (\r | |
353 | IN MTFTP4_PROTOCOL *Instance,\r | |
354 | IN UINT16 ErrCode,\r | |
dab714aa | 355 | IN UINT8 *ErrInfo\r |
772db4bb | 356 | )\r |
357 | {\r | |
358 | NET_BUF *Packet;\r | |
359 | EFI_MTFTP4_PACKET *TftpError;\r | |
360 | UINT32 Len;\r | |
361 | \r | |
687a2e5f | 362 | Len = (UINT32) (AsciiStrLen ((CHAR8 *) ErrInfo) + sizeof (EFI_MTFTP4_ERROR_HEADER));\r |
772db4bb | 363 | Packet = NetbufAlloc (Len);\r |
772db4bb | 364 | if (Packet == NULL) {\r |
365 | return EFI_OUT_OF_RESOURCES;\r | |
366 | }\r | |
367 | \r | |
368 | TftpError = (EFI_MTFTP4_PACKET *) NetbufAllocSpace (Packet, Len, FALSE);\r | |
894d038a | 369 | ASSERT (TftpError != NULL);\r |
370 | \r | |
772db4bb | 371 | TftpError->OpCode = HTONS (EFI_MTFTP4_OPCODE_ERROR);\r |
372 | TftpError->Error.ErrorCode = HTONS (ErrCode);\r | |
373 | \r | |
687a2e5f | 374 | AsciiStrCpy ((CHAR8 *) TftpError->Error.ErrorMessage, (CHAR8 *) ErrInfo);\r |
772db4bb | 375 | \r |
376 | return Mtftp4SendPacket (Instance, Packet);\r | |
377 | }\r | |
378 | \r | |
379 | \r | |
380 | /**\r | |
381 | The callback function called when the packet is transmitted.\r | |
dab714aa | 382 | \r |
772db4bb | 383 | It simply frees the packet.\r |
384 | \r | |
385 | @param Packet The transmitted (or failed to) packet\r | |
b45b45b2 | 386 | @param EndPoint The local and remote UDP access point\r |
772db4bb | 387 | @param IoStatus The result of the transmission\r |
388 | @param Context Opaque parameter to the callback\r | |
389 | \r | |
772db4bb | 390 | **/\r |
772db4bb | 391 | VOID\r |
e798cd87 | 392 | EFIAPI\r |
772db4bb | 393 | Mtftp4OnPacketSent (\r |
3dc3861a | 394 | IN NET_BUF *Packet,\r |
b45b45b2 | 395 | IN UDP_END_POINT *EndPoint,\r |
3dc3861a | 396 | IN EFI_STATUS IoStatus,\r |
397 | IN VOID *Context\r | |
772db4bb | 398 | )\r |
399 | {\r | |
400 | NetbufFree (Packet);\r | |
401 | }\r | |
402 | \r | |
403 | \r | |
404 | /**\r | |
dab714aa | 405 | Set the timeout for the instance. User a longer time for passive instances.\r |
772db4bb | 406 | \r |
407 | @param Instance The Mtftp session to set time out\r | |
408 | \r | |
772db4bb | 409 | **/\r |
410 | VOID\r | |
411 | Mtftp4SetTimeout (\r | |
dab714aa | 412 | IN OUT MTFTP4_PROTOCOL *Instance\r |
772db4bb | 413 | )\r |
414 | {\r | |
415 | if (Instance->Master) {\r | |
416 | Instance->PacketToLive = Instance->Timeout;\r | |
417 | } else {\r | |
418 | Instance->PacketToLive = Instance->Timeout * 2;\r | |
419 | }\r | |
420 | }\r | |
421 | \r | |
422 | \r | |
423 | /**\r | |
dab714aa | 424 | Send the packet for the instance. \r |
425 | \r | |
426 | It will first save a reference to the packet for later retransmission. \r | |
427 | Then determine the destination port, listen port for requests, and connected \r | |
428 | port for others. At last, send the packet out.\r | |
772db4bb | 429 | \r |
430 | @param Instance The Mtftp instance\r | |
431 | @param Packet The packet to send\r | |
432 | \r | |
433 | @retval EFI_SUCCESS The packet is sent out\r | |
434 | @retval Others Failed to transmit the packet.\r | |
435 | \r | |
436 | **/\r | |
437 | EFI_STATUS\r | |
438 | Mtftp4SendPacket (\r | |
dab714aa | 439 | IN OUT MTFTP4_PROTOCOL *Instance,\r |
440 | IN OUT NET_BUF *Packet\r | |
772db4bb | 441 | )\r |
442 | {\r | |
b45b45b2 | 443 | UDP_END_POINT UdpPoint;\r |
772db4bb | 444 | EFI_STATUS Status;\r |
445 | UINT16 OpCode;\r | |
687a2e5f | 446 | UINT16 Value;\r |
772db4bb | 447 | \r |
448 | //\r | |
449 | // Save the packet for retransmission\r | |
450 | //\r | |
451 | if (Instance->LastPacket != NULL) {\r | |
452 | NetbufFree (Instance->LastPacket);\r | |
453 | }\r | |
454 | \r | |
b45b45b2 | 455 | Instance->LastPacket = Packet;\r |
772db4bb | 456 | \r |
b45b45b2 | 457 | Instance->CurRetry = 0;\r |
772db4bb | 458 | Mtftp4SetTimeout (Instance);\r |
459 | \r | |
b45b45b2 | 460 | ZeroMem (&UdpPoint, sizeof (UdpPoint));\r |
461 | UdpPoint.RemoteAddr.Addr[0] = Instance->ServerIp;\r | |
772db4bb | 462 | \r |
463 | //\r | |
464 | // Send the requests to the listening port, other packets\r | |
465 | // to the connected port\r | |
466 | //\r | |
687a2e5f | 467 | Value = *((UINT16 *) NetbufGetByte (Packet, 0, NULL));\r |
468 | OpCode = NTOHS (Value);\r | |
772db4bb | 469 | \r |
dab714aa | 470 | if ((OpCode == EFI_MTFTP4_OPCODE_RRQ) || \r |
471 | (OpCode == EFI_MTFTP4_OPCODE_DIR) ||\r | |
772db4bb | 472 | (OpCode == EFI_MTFTP4_OPCODE_WRQ)) {\r |
473 | UdpPoint.RemotePort = Instance->ListeningPort;\r | |
474 | } else {\r | |
475 | UdpPoint.RemotePort = Instance->ConnectedPort;\r | |
476 | }\r | |
477 | \r | |
478 | NET_GET_REF (Packet);\r | |
479 | \r | |
480 | Status = UdpIoSendDatagram (\r | |
481 | Instance->UnicastPort,\r | |
482 | Packet,\r | |
483 | &UdpPoint,\r | |
b45b45b2 | 484 | NULL,\r |
772db4bb | 485 | Mtftp4OnPacketSent,\r |
486 | Instance\r | |
487 | );\r | |
488 | \r | |
489 | if (EFI_ERROR (Status)) {\r | |
490 | NET_PUT_REF (Packet);\r | |
491 | }\r | |
492 | \r | |
493 | return Status;\r | |
494 | }\r | |
495 | \r | |
496 | \r | |
497 | /**\r | |
dab714aa | 498 | Retransmit the last packet for the instance.\r |
772db4bb | 499 | \r |
500 | @param Instance The Mtftp instance\r | |
501 | \r | |
502 | @retval EFI_SUCCESS The last packet is retransmitted.\r | |
503 | @retval Others Failed to retransmit.\r | |
504 | \r | |
505 | **/\r | |
506 | EFI_STATUS\r | |
507 | Mtftp4Retransmit (\r | |
508 | IN MTFTP4_PROTOCOL *Instance\r | |
509 | )\r | |
510 | {\r | |
b45b45b2 | 511 | UDP_END_POINT UdpPoint;\r |
772db4bb | 512 | EFI_STATUS Status;\r |
513 | UINT16 OpCode;\r | |
687a2e5f | 514 | UINT16 Value;\r |
772db4bb | 515 | \r |
516 | ASSERT (Instance->LastPacket != NULL);\r | |
517 | \r | |
b45b45b2 | 518 | ZeroMem (&UdpPoint, sizeof (UdpPoint));\r |
519 | UdpPoint.RemoteAddr.Addr[0] = Instance->ServerIp;\r | |
772db4bb | 520 | \r |
521 | //\r | |
522 | // Set the requests to the listening port, other packets to the connected port\r | |
523 | //\r | |
687a2e5f | 524 | Value = *(UINT16 *) NetbufGetByte (Instance->LastPacket, 0, NULL);\r |
525 | OpCode = NTOHS (Value);\r | |
772db4bb | 526 | \r |
527 | if ((OpCode == EFI_MTFTP4_OPCODE_RRQ) || (OpCode == EFI_MTFTP4_OPCODE_DIR) ||\r | |
528 | (OpCode == EFI_MTFTP4_OPCODE_WRQ)) {\r | |
529 | UdpPoint.RemotePort = Instance->ListeningPort;\r | |
530 | } else {\r | |
531 | UdpPoint.RemotePort = Instance->ConnectedPort;\r | |
532 | }\r | |
533 | \r | |
534 | NET_GET_REF (Instance->LastPacket);\r | |
535 | \r | |
536 | Status = UdpIoSendDatagram (\r | |
537 | Instance->UnicastPort,\r | |
538 | Instance->LastPacket,\r | |
539 | &UdpPoint,\r | |
b45b45b2 | 540 | NULL,\r |
772db4bb | 541 | Mtftp4OnPacketSent,\r |
542 | Instance\r | |
543 | );\r | |
544 | \r | |
545 | if (EFI_ERROR (Status)) {\r | |
546 | NET_PUT_REF (Instance->LastPacket);\r | |
547 | }\r | |
548 | \r | |
549 | return Status;\r | |
550 | }\r | |
551 | \r | |
552 | \r | |
553 | /**\r | |
554 | The timer ticking function for the Mtftp service instance.\r | |
555 | \r | |
556 | @param Event The ticking event\r | |
557 | @param Context The Mtftp service instance\r | |
558 | \r | |
772db4bb | 559 | **/\r |
560 | VOID\r | |
561 | EFIAPI\r | |
562 | Mtftp4OnTimerTick (\r | |
563 | IN EFI_EVENT Event,\r | |
564 | IN VOID *Context\r | |
565 | )\r | |
566 | {\r | |
567 | MTFTP4_SERVICE *MtftpSb;\r | |
e48e37fc | 568 | LIST_ENTRY *Entry;\r |
569 | LIST_ENTRY *Next;\r | |
772db4bb | 570 | MTFTP4_PROTOCOL *Instance;\r |
571 | EFI_MTFTP4_TOKEN *Token;\r | |
572 | \r | |
573 | MtftpSb = (MTFTP4_SERVICE *) Context;\r | |
574 | \r | |
575 | //\r | |
576 | // Iterate through all the children of the Mtftp service instance. Time\r | |
577 | // out the packet. If maximum retries reached, clean the session up.\r | |
578 | //\r | |
579 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &MtftpSb->Children) {\r | |
580 | Instance = NET_LIST_USER_STRUCT (Entry, MTFTP4_PROTOCOL, Link);\r | |
581 | \r | |
582 | if ((Instance->PacketToLive == 0) || (--Instance->PacketToLive > 0)) {\r | |
583 | continue;\r | |
584 | }\r | |
585 | \r | |
586 | //\r | |
587 | // Call the user's time out handler\r | |
588 | //\r | |
589 | Token = Instance->Token;\r | |
590 | \r | |
591 | if ((Token->TimeoutCallback != NULL) &&\r | |
592 | EFI_ERROR (Token->TimeoutCallback (&Instance->Mtftp4, Token))) {\r | |
593 | \r | |
594 | Mtftp4SendError (\r | |
595 | Instance,\r | |
596 | EFI_MTFTP4_ERRORCODE_REQUEST_DENIED,\r | |
67a58d0f | 597 | (UINT8 *) "User aborted the transfer in time out"\r |
772db4bb | 598 | );\r |
599 | \r | |
600 | Mtftp4CleanOperation (Instance, EFI_ABORTED);\r | |
601 | continue;\r | |
602 | }\r | |
603 | \r | |
604 | //\r | |
605 | // Retransmit the packet if haven't reach the maxmium retry count,\r | |
606 | // otherwise exit the transfer.\r | |
607 | //\r | |
608 | if (++Instance->CurRetry < Instance->MaxRetry) {\r | |
609 | Mtftp4Retransmit (Instance);\r | |
610 | Mtftp4SetTimeout (Instance);\r | |
611 | } else {\r | |
612 | Mtftp4CleanOperation (Instance, EFI_TIMEOUT);\r | |
613 | continue;\r | |
614 | }\r | |
615 | }\r | |
616 | }\r |