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cbf316f2 | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006 - 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | \r | |
13 | Module Name:\r | |
14 | \r | |
15 | Udp4Io.c\r | |
16 | \r | |
17 | Abstract:\r | |
18 | \r | |
19 | Help functions to access UDP service, it is used by both the DHCP and MTFTP.\r | |
20 | \r | |
21 | \r | |
22 | **/\r | |
23 | \r | |
24 | #include <PiDxe.h>\r | |
25 | \r | |
26 | #include <Protocol/Udp4.h>\r | |
27 | \r | |
28 | #include <Library/UdpIoLib.h>\r | |
29 | #include <Library/BaseLib.h>\r | |
30 | #include <Library/DebugLib.h>\r | |
31 | #include <Library/UefiBootServicesTableLib.h>\r | |
32 | #include <Library/MemoryAllocationLib.h>\r | |
b61439a7 | 33 | #include <library/BaseMemoryLib.h>\r |
cbf316f2 | 34 | \r |
36ee91ca | 35 | STATIC\r |
36 | VOID\r | |
37 | EFIAPI\r | |
38 | UdpIoOnDgramSentDpc (\r | |
39 | IN VOID *Context\r | |
40 | );\r | |
41 | \r | |
cbf316f2 | 42 | STATIC\r |
43 | VOID\r | |
44 | EFIAPI\r | |
45 | UdpIoOnDgramSent (\r | |
46 | IN EFI_EVENT Event,\r | |
47 | IN VOID *Context\r | |
48 | );\r | |
49 | \r | |
50 | STATIC\r | |
51 | VOID\r | |
52 | EFIAPI\r | |
53 | UdpIoOnDgramRcvd (\r | |
54 | IN EFI_EVENT Event,\r | |
55 | IN VOID *Context\r | |
56 | );\r | |
57 | \r | |
58 | \r | |
59 | /**\r | |
60 | Wrap a transmit request into a UDP_TX_TOKEN.\r | |
61 | \r | |
62 | @param UdpIo The UdpIo port to send packet to\r | |
63 | @param Packet The user's packet\r | |
64 | @param EndPoint The local and remote access point\r | |
65 | @param Gateway The overrided next hop\r | |
66 | @param CallBack The function to call when transmission completed.\r | |
67 | @param Context The opaque parameter to the call back\r | |
68 | \r | |
69 | @return The wrapped transmission request or NULL if failed to allocate resources.\r | |
70 | \r | |
71 | **/\r | |
72 | STATIC\r | |
73 | UDP_TX_TOKEN *\r | |
74 | UdpIoWrapTx (\r | |
75 | IN UDP_IO_PORT *UdpIo,\r | |
76 | IN NET_BUF *Packet,\r | |
77 | IN UDP_POINTS *EndPoint, OPTIONAL\r | |
78 | IN IP4_ADDR Gateway,\r | |
79 | IN UDP_IO_CALLBACK CallBack,\r | |
80 | IN VOID *Context\r | |
81 | )\r | |
82 | {\r | |
83 | UDP_TX_TOKEN *Token;\r | |
84 | EFI_UDP4_COMPLETION_TOKEN *UdpToken;\r | |
85 | EFI_UDP4_TRANSMIT_DATA *UdpTxData;\r | |
86 | EFI_STATUS Status;\r | |
87 | UINT32 Count;\r | |
b61439a7 | 88 | IP4_ADDR Ip;\r |
cbf316f2 | 89 | \r |
90 | Token = NetAllocatePool (sizeof (UDP_TX_TOKEN) +\r | |
91 | sizeof (EFI_UDP4_FRAGMENT_DATA) * (Packet->BlockOpNum - 1));\r | |
92 | \r | |
93 | if (Token == NULL) {\r | |
94 | return NULL;\r | |
95 | }\r | |
96 | \r | |
97 | Token->Signature = UDP_IO_TX_SIGNATURE;\r | |
98 | NetListInit (&Token->Link);\r | |
99 | \r | |
100 | Token->UdpIo = UdpIo;\r | |
101 | Token->CallBack = CallBack;\r | |
102 | Token->Packet = Packet;\r | |
103 | Token->Context = Context;\r | |
104 | \r | |
105 | UdpToken = &(Token->UdpToken);\r | |
106 | UdpToken->Status = EFI_NOT_READY;\r | |
107 | \r | |
108 | Status = gBS->CreateEvent (\r | |
109 | EVT_NOTIFY_SIGNAL,\r | |
36ee91ca | 110 | NET_TPL_EVENT,\r |
cbf316f2 | 111 | UdpIoOnDgramSent,\r |
112 | Token,\r | |
113 | &UdpToken->Event\r | |
114 | );\r | |
115 | \r | |
116 | if (EFI_ERROR (Status)) {\r | |
117 | NetFreePool (Token);\r | |
118 | return NULL;\r | |
119 | }\r | |
120 | \r | |
121 | UdpTxData = &Token->UdpTxData;\r | |
122 | UdpToken->Packet.TxData = UdpTxData;\r | |
123 | \r | |
124 | UdpTxData->UdpSessionData = NULL;\r | |
125 | UdpTxData->GatewayAddress = NULL;\r | |
126 | \r | |
127 | if (EndPoint != NULL) {\r | |
b61439a7 | 128 | Ip = HTONL (EndPoint->LocalAddr);\r |
129 | NetCopyMem (&Token->UdpSession.SourceAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
130 | \r | |
131 | Ip = HTONL (EndPoint->RemoteAddr);\r | |
132 | NetCopyMem (&Token->UdpSession.DestinationAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
133 | \r | |
134 | Token->UdpSession.SourcePort = EndPoint->LocalPort;\r | |
135 | Token->UdpSession.DestinationPort = EndPoint->RemotePort;\r | |
136 | UdpTxData->UdpSessionData = &Token->UdpSession;\r | |
cbf316f2 | 137 | }\r |
138 | \r | |
139 | if (Gateway != 0) {\r | |
b61439a7 | 140 | Ip = HTONL (Gateway);\r |
141 | NetCopyMem (&Token->Gateway, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
142 | \r | |
cbf316f2 | 143 | UdpTxData->GatewayAddress = &Token->Gateway;\r |
144 | }\r | |
145 | \r | |
146 | UdpTxData->DataLength = Packet->TotalSize;\r | |
147 | Count = Packet->BlockOpNum;\r | |
148 | NetbufBuildExt (Packet, (NET_FRAGMENT *) UdpTxData->FragmentTable, &Count);\r | |
149 | UdpTxData->FragmentCount = Count;\r | |
150 | \r | |
151 | return Token;\r | |
152 | }\r | |
153 | \r | |
154 | \r | |
155 | /**\r | |
156 | Free a UDP_TX_TOKEN. The event is closed and memory released.\r | |
157 | \r | |
158 | @param Token The UDP_TX_TOKEN to release.\r | |
159 | \r | |
160 | @return None\r | |
161 | \r | |
162 | **/\r | |
163 | VOID\r | |
164 | UdpIoFreeTxToken (\r | |
165 | IN UDP_TX_TOKEN *Token\r | |
166 | )\r | |
167 | {\r | |
168 | gBS->CloseEvent (Token->UdpToken.Event);\r | |
169 | NetFreePool (Token);\r | |
170 | }\r | |
171 | \r | |
172 | \r | |
173 | /**\r | |
174 | Create a UDP_RX_TOKEN to wrap the request.\r | |
175 | \r | |
176 | @param UdpIo The UdpIo to receive packets from\r | |
177 | @param CallBack The function to call when receive finished.\r | |
178 | @param Context The opaque parameter to the CallBack\r | |
179 | @param HeadLen The head length to reserver for the packet.\r | |
180 | \r | |
181 | @return The Wrapped request or NULL if failed to allocate resources.\r | |
182 | \r | |
183 | **/\r | |
184 | UDP_RX_TOKEN *\r | |
185 | UdpIoCreateRxToken (\r | |
186 | IN UDP_IO_PORT *UdpIo,\r | |
187 | IN UDP_IO_CALLBACK CallBack,\r | |
188 | IN VOID *Context,\r | |
189 | IN UINT32 HeadLen\r | |
190 | )\r | |
191 | {\r | |
192 | UDP_RX_TOKEN *Token;\r | |
193 | EFI_STATUS Status;\r | |
194 | \r | |
195 | Token = NetAllocatePool (sizeof (UDP_RX_TOKEN));\r | |
196 | \r | |
197 | if (Token == NULL) {\r | |
198 | return NULL;\r | |
199 | }\r | |
200 | \r | |
201 | Token->Signature = UDP_IO_RX_SIGNATURE;\r | |
202 | Token->UdpIo = UdpIo;\r | |
203 | Token->CallBack = CallBack;\r | |
204 | Token->Context = Context;\r | |
205 | Token->HeadLen = HeadLen;\r | |
206 | \r | |
207 | Token->UdpToken.Status = EFI_NOT_READY;\r | |
208 | Token->UdpToken.Packet.RxData = NULL;\r | |
209 | \r | |
210 | Status = gBS->CreateEvent (\r | |
211 | EVT_NOTIFY_SIGNAL,\r | |
36ee91ca | 212 | NET_TPL_EVENT,\r |
cbf316f2 | 213 | UdpIoOnDgramRcvd,\r |
214 | Token,\r | |
215 | &Token->UdpToken.Event\r | |
216 | );\r | |
217 | \r | |
218 | if (EFI_ERROR (Status)) {\r | |
219 | NetFreePool (Token);\r | |
220 | return NULL;\r | |
221 | }\r | |
222 | \r | |
223 | return Token;\r | |
224 | }\r | |
225 | \r | |
226 | \r | |
227 | /**\r | |
228 | Free a receive request wrap.\r | |
229 | \r | |
230 | @param Token The receive request to release.\r | |
231 | \r | |
232 | @return None\r | |
233 | \r | |
234 | **/\r | |
235 | VOID\r | |
236 | UdpIoFreeRxToken (\r | |
237 | IN UDP_RX_TOKEN *Token\r | |
238 | )\r | |
239 | {\r | |
240 | gBS->CloseEvent (Token->UdpToken.Event);\r | |
241 | NetFreePool (Token);\r | |
242 | }\r | |
243 | \r | |
244 | \r | |
245 | /**\r | |
246 | Create a UDP IO port to access the UDP service. It will\r | |
247 | create and configure a UDP child.\r | |
248 | \r | |
249 | @param Controller The controller that has the UDP service binding\r | |
250 | protocol installed.\r | |
251 | @param Image The image handle for the driver.\r | |
252 | @param Configure The function to configure the created UDP child\r | |
253 | @param Context The opaque parameter for the Configure funtion.\r | |
254 | \r | |
255 | @return A point to just created UDP IO port or NULL if failed.\r | |
256 | \r | |
257 | **/\r | |
258 | UDP_IO_PORT *\r | |
259 | UdpIoCreatePort (\r | |
260 | IN EFI_HANDLE Controller,\r | |
261 | IN EFI_HANDLE Image,\r | |
262 | IN UDP_IO_CONFIG Configure,\r | |
263 | IN VOID *Context\r | |
264 | )\r | |
265 | {\r | |
266 | UDP_IO_PORT *UdpIo;\r | |
267 | EFI_STATUS Status;\r | |
268 | \r | |
269 | ASSERT (Configure != NULL);\r | |
270 | \r | |
271 | UdpIo = NetAllocatePool (sizeof (UDP_IO_PORT));\r | |
272 | \r | |
273 | if (UdpIo == NULL) {\r | |
274 | return NULL;\r | |
275 | }\r | |
276 | \r | |
277 | UdpIo->Signature = UDP_IO_SIGNATURE;\r | |
278 | NetListInit (&UdpIo->Link);\r | |
279 | UdpIo->RefCnt = 1;\r | |
280 | \r | |
281 | UdpIo->Controller = Controller;\r | |
282 | UdpIo->Image = Image;\r | |
283 | \r | |
284 | NetListInit (&UdpIo->SentDatagram);\r | |
285 | UdpIo->RecvRequest = NULL;\r | |
286 | UdpIo->UdpHandle = NULL;\r | |
287 | \r | |
288 | //\r | |
289 | // Create a UDP child then open and configure it\r | |
290 | //\r | |
291 | Status = NetLibCreateServiceChild (\r | |
292 | Controller,\r | |
293 | Image,\r | |
294 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
295 | &UdpIo->UdpHandle\r | |
296 | );\r | |
297 | \r | |
298 | if (EFI_ERROR (Status)) {\r | |
299 | goto FREE_MEM;\r | |
300 | }\r | |
301 | \r | |
302 | Status = gBS->OpenProtocol (\r | |
303 | UdpIo->UdpHandle,\r | |
304 | &gEfiUdp4ProtocolGuid,\r | |
4eb65aff | 305 | (VOID **) &UdpIo->Udp,\r |
cbf316f2 | 306 | Image,\r |
307 | Controller,\r | |
308 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
309 | );\r | |
310 | \r | |
311 | if (EFI_ERROR (Status)) {\r | |
312 | goto FREE_CHILD;\r | |
313 | }\r | |
314 | \r | |
315 | if (EFI_ERROR (Configure (UdpIo, Context))) {\r | |
316 | goto CLOSE_PROTOCOL;\r | |
317 | }\r | |
318 | \r | |
319 | Status = UdpIo->Udp->GetModeData (UdpIo->Udp, NULL, NULL, NULL, &UdpIo->SnpMode);\r | |
320 | \r | |
321 | if (EFI_ERROR (Status)) {\r | |
322 | goto CLOSE_PROTOCOL;\r | |
323 | }\r | |
324 | \r | |
325 | return UdpIo;\r | |
326 | \r | |
327 | CLOSE_PROTOCOL:\r | |
328 | gBS->CloseProtocol (UdpIo->UdpHandle, &gEfiUdp4ProtocolGuid, Image, Controller);\r | |
329 | \r | |
330 | FREE_CHILD:\r | |
331 | NetLibDestroyServiceChild (\r | |
332 | Controller,\r | |
333 | Image,\r | |
334 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
335 | UdpIo->UdpHandle\r | |
336 | );\r | |
337 | \r | |
338 | FREE_MEM:\r | |
339 | NetFreePool (UdpIo);\r | |
340 | return NULL;\r | |
341 | }\r | |
342 | \r | |
343 | \r | |
344 | /**\r | |
345 | Cancel all the sent datagram that pass the selection of ToCancel.\r | |
346 | If ToCancel is NULL, all the datagrams are cancelled.\r | |
347 | \r | |
348 | @param UdpIo The UDP IO port to cancel packet\r | |
349 | @param IoStatus The IoStatus to return to the packet owners.\r | |
350 | @param ToCancel The select funtion to test whether to cancel this\r | |
351 | packet or not.\r | |
352 | @param Context The opaque parameter to the ToCancel.\r | |
353 | \r | |
354 | @return None\r | |
355 | \r | |
356 | **/\r | |
357 | STATIC\r | |
358 | VOID\r | |
359 | UdpIoCancelDgrams (\r | |
360 | IN UDP_IO_PORT *UdpIo,\r | |
361 | IN EFI_STATUS IoStatus,\r | |
362 | IN UDP_IO_TO_CANCEL ToCancel, OPTIONAL\r | |
363 | IN VOID *Context\r | |
364 | )\r | |
365 | {\r | |
366 | NET_LIST_ENTRY *Entry;\r | |
367 | NET_LIST_ENTRY *Next;\r | |
368 | UDP_TX_TOKEN *Token;\r | |
369 | \r | |
370 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &UdpIo->SentDatagram) {\r | |
371 | Token = NET_LIST_USER_STRUCT (Entry, UDP_TX_TOKEN, Link);\r | |
372 | \r | |
373 | if ((ToCancel == NULL) || (ToCancel (Token, Context))) {\r | |
cbf316f2 | 374 | UdpIo->Udp->Cancel (UdpIo->Udp, &Token->UdpToken);\r |
cbf316f2 | 375 | }\r |
376 | }\r | |
377 | }\r | |
378 | \r | |
379 | \r | |
380 | /**\r | |
381 | Free the UDP IO port and all its related resources including\r | |
382 | all the transmitted packet.\r | |
383 | \r | |
384 | @param UdpIo The UDP IO port to free.\r | |
385 | \r | |
386 | @retval EFI_SUCCESS The UDP IO port is freed.\r | |
387 | \r | |
388 | **/\r | |
389 | EFI_STATUS\r | |
390 | UdpIoFreePort (\r | |
391 | IN UDP_IO_PORT *UdpIo\r | |
392 | )\r | |
393 | {\r | |
394 | UDP_RX_TOKEN *RxToken;\r | |
395 | \r | |
396 | //\r | |
397 | // Cancel all the sent datagram and receive requests. The\r | |
398 | // callbacks of transmit requests are executed to allow the\r | |
399 | // caller to release the resource. The callback of receive\r | |
400 | // request are NOT executed. This is because it is most\r | |
401 | // likely that the current user of the UDP IO port is closing\r | |
402 | // itself.\r | |
403 | //\r | |
404 | UdpIoCancelDgrams (UdpIo, EFI_ABORTED, NULL, NULL);\r | |
405 | \r | |
406 | if ((RxToken = UdpIo->RecvRequest) != NULL) {\r | |
cbf316f2 | 407 | UdpIo->Udp->Cancel (UdpIo->Udp, &RxToken->UdpToken);\r |
cbf316f2 | 408 | }\r |
409 | \r | |
410 | //\r | |
411 | // Close then destory the UDP child\r | |
412 | //\r | |
413 | gBS->CloseProtocol (\r | |
414 | UdpIo->UdpHandle,\r | |
415 | &gEfiUdp4ProtocolGuid,\r | |
416 | UdpIo->Image,\r | |
417 | UdpIo->Controller\r | |
418 | );\r | |
419 | \r | |
420 | NetLibDestroyServiceChild (\r | |
421 | UdpIo->Controller,\r | |
422 | UdpIo->Image,\r | |
423 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
424 | UdpIo->UdpHandle\r | |
425 | );\r | |
426 | \r | |
687a2e5f | 427 | if (!IsListEmpty(&UdpIo->Link)) {\r |
428 | NetListRemoveEntry (&UdpIo->Link);\r | |
429 | }\r | |
430 | \r | |
cbf316f2 | 431 | NetFreePool (UdpIo);\r |
432 | return EFI_SUCCESS;\r | |
433 | }\r | |
434 | \r | |
435 | \r | |
436 | /**\r | |
437 | Clean up the UDP IO port. It will release all the transmitted\r | |
438 | datagrams and receive request. It will also configure NULL the\r | |
439 | UDP child.\r | |
440 | \r | |
441 | @param UdpIo UDP IO port to clean up.\r | |
442 | \r | |
443 | @return None\r | |
444 | \r | |
445 | **/\r | |
446 | VOID\r | |
447 | UdpIoCleanPort (\r | |
448 | IN UDP_IO_PORT *UdpIo\r | |
449 | )\r | |
450 | {\r | |
451 | UDP_RX_TOKEN *RxToken;\r | |
452 | \r | |
453 | //\r | |
454 | // Cancel all the sent datagram and receive requests.\r | |
455 | //\r | |
456 | UdpIoCancelDgrams (UdpIo, EFI_ABORTED, NULL, NULL);\r | |
457 | \r | |
458 | if ((RxToken = UdpIo->RecvRequest) != NULL) {\r | |
cbf316f2 | 459 | UdpIo->Udp->Cancel (UdpIo->Udp, &RxToken->UdpToken);\r |
cbf316f2 | 460 | }\r |
461 | \r | |
462 | UdpIo->Udp->Configure (UdpIo->Udp, NULL);\r | |
463 | }\r | |
464 | \r | |
465 | \r | |
466 | /**\r | |
467 | The callback function when the packet is sent by UDP.\r | |
468 | It will remove the packet from the local list then call\r | |
469 | the packet owner's callback function.\r | |
470 | \r | |
cbf316f2 | 471 | @param Context The UDP TX Token.\r |
472 | \r | |
473 | @return None\r | |
474 | \r | |
475 | **/\r | |
476 | STATIC\r | |
477 | VOID\r | |
478 | EFIAPI\r | |
36ee91ca | 479 | UdpIoOnDgramSentDpc (\r |
cbf316f2 | 480 | IN VOID *Context\r |
481 | )\r | |
482 | {\r | |
483 | UDP_TX_TOKEN *Token;\r | |
484 | \r | |
485 | Token = (UDP_TX_TOKEN *) Context;\r | |
486 | ASSERT (Token->Signature == UDP_IO_TX_SIGNATURE);\r | |
487 | \r | |
488 | NetListRemoveEntry (&Token->Link);\r | |
489 | Token->CallBack (Token->Packet, NULL, Token->UdpToken.Status, Token->Context);\r | |
490 | \r | |
491 | UdpIoFreeTxToken (Token);\r | |
492 | }\r | |
493 | \r | |
36ee91ca | 494 | /**\r |
495 | Request UdpIoOnDgramSentDpc as a DPC at TPL_CALLBACK.\r | |
496 | \r | |
497 | @param Event The event signalled.\r | |
498 | @param Context The UDP TX Token.\r | |
499 | \r | |
500 | @return None\r | |
501 | \r | |
502 | **/\r | |
503 | STATIC\r | |
504 | VOID\r | |
505 | EFIAPI\r | |
506 | UdpIoOnDgramSent (\r | |
507 | IN EFI_EVENT Event,\r | |
508 | IN VOID *Context\r | |
509 | )\r | |
510 | {\r | |
511 | //\r | |
512 | // Request UdpIoOnDgramSentDpc as a DPC at TPL_CALLBACK\r | |
513 | //\r | |
514 | NetLibQueueDpc (TPL_CALLBACK, UdpIoOnDgramSentDpc, Context);\r | |
515 | }\r | |
516 | \r | |
cbf316f2 | 517 | \r |
518 | /**\r | |
519 | Send a packet through the UDP IO port.\r | |
520 | \r | |
521 | @param UdpIo The UDP IO Port to send the packet through\r | |
522 | @param Packet The packet to send\r | |
523 | @param EndPoint The local and remote access point\r | |
524 | @param Gateway The gateway to use\r | |
525 | @param CallBack The call back function to call when packet is\r | |
526 | transmitted or failed.\r | |
527 | @param Context The opque parameter to the CallBack\r | |
528 | \r | |
529 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet\r | |
530 | @retval EFI_SUCCESS The packet is successfully delivered to UDP for\r | |
531 | transmission.\r | |
532 | \r | |
533 | **/\r | |
534 | EFI_STATUS\r | |
535 | UdpIoSendDatagram (\r | |
536 | IN UDP_IO_PORT *UdpIo,\r | |
537 | IN NET_BUF *Packet,\r | |
538 | IN UDP_POINTS *EndPoint, OPTIONAL\r | |
539 | IN IP4_ADDR Gateway,\r | |
540 | IN UDP_IO_CALLBACK CallBack,\r | |
541 | IN VOID *Context\r | |
542 | )\r | |
543 | {\r | |
544 | UDP_TX_TOKEN *Token;\r | |
545 | EFI_STATUS Status;\r | |
546 | \r | |
547 | Token = UdpIoWrapTx (UdpIo, Packet, EndPoint, Gateway, CallBack, Context);\r | |
548 | \r | |
549 | if (Token == NULL) {\r | |
550 | return EFI_OUT_OF_RESOURCES;\r | |
551 | }\r | |
552 | \r | |
36ee91ca | 553 | //\r |
554 | // Insert the tx token into SendDatagram list before transmitting it. Remove\r | |
555 | // it from the list if the returned status is not EFI_SUCCESS.\r | |
556 | //\r | |
557 | NetListInsertHead (&UdpIo->SentDatagram, &Token->Link);\r | |
cbf316f2 | 558 | Status = UdpIo->Udp->Transmit (UdpIo->Udp, &Token->UdpToken);\r |
cbf316f2 | 559 | if (EFI_ERROR (Status)) {\r |
36ee91ca | 560 | NetListRemoveEntry (&Token->Link);\r |
cbf316f2 | 561 | UdpIoFreeTxToken (Token);\r |
562 | return Status;\r | |
563 | }\r | |
564 | \r | |
cbf316f2 | 565 | return EFI_SUCCESS;\r |
566 | }\r | |
567 | \r | |
568 | \r | |
569 | /**\r | |
570 | The selection function to cancel a single sent datagram.\r | |
571 | \r | |
572 | @param Token The UDP TX token to test againist.\r | |
573 | @param Context The context\r | |
574 | \r | |
575 | @return TRUE if the packet is to be cancelled, otherwise FALSE.\r | |
576 | \r | |
577 | **/\r | |
578 | STATIC\r | |
579 | BOOLEAN\r | |
580 | UdpIoCancelSingleDgram (\r | |
581 | IN UDP_TX_TOKEN *Token,\r | |
582 | IN VOID *Context\r | |
583 | )\r | |
584 | {\r | |
585 | NET_BUF *Packet;\r | |
586 | \r | |
587 | Packet = (NET_BUF *) Context;\r | |
588 | \r | |
589 | if (Token->Packet == Packet) {\r | |
590 | return TRUE;\r | |
591 | }\r | |
592 | \r | |
593 | return FALSE;\r | |
594 | }\r | |
595 | \r | |
596 | \r | |
597 | /**\r | |
598 | Cancel a single sent datagram.\r | |
599 | \r | |
600 | @param UdpIo The UDP IO port to cancel the packet from\r | |
601 | @param Packet The packet to cancel\r | |
602 | \r | |
603 | @return None\r | |
604 | \r | |
605 | **/\r | |
606 | VOID\r | |
607 | UdpIoCancelSentDatagram (\r | |
608 | IN UDP_IO_PORT *UdpIo,\r | |
609 | IN NET_BUF *Packet\r | |
610 | )\r | |
611 | {\r | |
612 | UdpIoCancelDgrams (UdpIo, EFI_ABORTED, UdpIoCancelSingleDgram, Packet);\r | |
613 | }\r | |
614 | \r | |
615 | \r | |
616 | /**\r | |
617 | Recycle the received UDP data.\r | |
618 | \r | |
619 | @param Context The UDP_RX_TOKEN\r | |
620 | \r | |
621 | @return None\r | |
622 | \r | |
623 | **/\r | |
624 | STATIC\r | |
625 | VOID\r | |
626 | UdpIoRecycleDgram (\r | |
627 | IN VOID *Context\r | |
628 | )\r | |
629 | {\r | |
630 | UDP_RX_TOKEN *Token;\r | |
631 | \r | |
632 | Token = (UDP_RX_TOKEN *) Context;\r | |
633 | gBS->SignalEvent (Token->UdpToken.Packet.RxData->RecycleSignal);\r | |
634 | UdpIoFreeRxToken (Token);\r | |
635 | }\r | |
636 | \r | |
cbf316f2 | 637 | /**\r |
638 | The event handle for UDP receive request. It will build\r | |
639 | a NET_BUF from the recieved UDP data, then deliver it\r | |
640 | to the receiver.\r | |
641 | \r | |
cbf316f2 | 642 | @param Context The UDP RX token.\r |
643 | \r | |
644 | @return None\r | |
645 | \r | |
646 | **/\r | |
647 | STATIC\r | |
648 | VOID\r | |
649 | EFIAPI\r | |
36ee91ca | 650 | UdpIoOnDgramRcvdDpc (\r |
cbf316f2 | 651 | IN VOID *Context\r |
652 | )\r | |
653 | {\r | |
654 | EFI_UDP4_COMPLETION_TOKEN *UdpToken;\r | |
655 | EFI_UDP4_RECEIVE_DATA *UdpRxData;\r | |
656 | EFI_UDP4_SESSION_DATA *UdpSession;\r | |
657 | UDP_RX_TOKEN *Token;\r | |
658 | UDP_POINTS Points;\r | |
659 | NET_BUF *Netbuf;\r | |
660 | \r | |
661 | Token = (UDP_RX_TOKEN *) Context;\r | |
662 | \r | |
663 | ASSERT ((Token->Signature == UDP_IO_RX_SIGNATURE) &&\r | |
664 | (Token == Token->UdpIo->RecvRequest));\r | |
665 | \r | |
666 | //\r | |
667 | // Clear the receive request first in case that the caller\r | |
668 | // wants to restart the receive in the callback.\r | |
669 | //\r | |
670 | Token->UdpIo->RecvRequest = NULL;\r | |
671 | \r | |
672 | UdpToken = &Token->UdpToken;\r | |
673 | UdpRxData = UdpToken->Packet.RxData;\r | |
674 | \r | |
675 | if (EFI_ERROR (UdpToken->Status) || (UdpRxData == NULL)) {\r | |
36ee91ca | 676 | if (UdpToken->Status != EFI_ABORTED) {\r |
677 | //\r | |
678 | // Invoke the CallBack only if the reception is not actively aborted.\r | |
679 | //\r | |
680 | Token->CallBack (NULL, NULL, UdpToken->Status, Token->Context);\r | |
681 | }\r | |
cbf316f2 | 682 | \r |
36ee91ca | 683 | UdpIoFreeRxToken (Token);\r |
684 | return;\r | |
cbf316f2 | 685 | }\r |
686 | \r | |
687 | //\r | |
688 | // Build a NET_BUF from the UDP receive data, then deliver it up.\r | |
689 | //\r | |
690 | Netbuf = NetbufFromExt (\r | |
691 | (NET_FRAGMENT *) UdpRxData->FragmentTable,\r | |
692 | UdpRxData->FragmentCount,\r | |
693 | 0,\r | |
694 | (UINT32) Token->HeadLen,\r | |
695 | UdpIoRecycleDgram,\r | |
696 | Token\r | |
697 | );\r | |
698 | \r | |
699 | if (Netbuf == NULL) {\r | |
700 | gBS->SignalEvent (UdpRxData->RecycleSignal);\r | |
701 | Token->CallBack (NULL, NULL, EFI_OUT_OF_RESOURCES, Token->Context);\r | |
702 | \r | |
703 | UdpIoFreeRxToken (Token);\r | |
36ee91ca | 704 | return;\r |
cbf316f2 | 705 | }\r |
706 | \r | |
707 | UdpSession = &UdpRxData->UdpSession;\r | |
cbf316f2 | 708 | Points.LocalPort = UdpSession->DestinationPort;\r |
cbf316f2 | 709 | Points.RemotePort = UdpSession->SourcePort;\r |
710 | \r | |
b61439a7 | 711 | NetCopyMem (&Points.LocalAddr, &UdpSession->DestinationAddress, sizeof (IP4_ADDR));\r |
712 | NetCopyMem (&Points.RemoteAddr, &UdpSession->SourceAddress, sizeof (IP4_ADDR));\r | |
713 | Points.LocalAddr = NTOHL (Points.LocalAddr);\r | |
714 | Points.RemoteAddr = NTOHL (Points.RemoteAddr);\r | |
715 | \r | |
cbf316f2 | 716 | Token->CallBack (Netbuf, &Points, EFI_SUCCESS, Token->Context);\r |
36ee91ca | 717 | }\r |
718 | \r | |
719 | /**\r | |
720 | Request UdpIoOnDgramRcvdDpc as a DPC at TPL_CALLBACK.\r | |
721 | \r | |
722 | @param Event The UDP receive request event.\r | |
723 | @param Context The UDP RX token.\r | |
724 | \r | |
725 | @return None\r | |
726 | \r | |
727 | **/\r | |
728 | STATIC\r | |
729 | VOID\r | |
730 | EFIAPI\r | |
731 | UdpIoOnDgramRcvd (\r | |
732 | IN EFI_EVENT Event,\r | |
733 | IN VOID *Context\r | |
734 | )\r | |
735 | /*++\r | |
736 | \r | |
737 | Routine Description:\r | |
738 | \r | |
739 | Request UdpIoOnDgramRcvdDpc as a DPC at TPL_CALLBACK\r | |
740 | \r | |
741 | Arguments:\r | |
742 | \r | |
743 | Event - The UDP receive request event\r | |
744 | Context - The UDP RX token.\r | |
745 | \r | |
746 | Returns:\r | |
cbf316f2 | 747 | \r |
36ee91ca | 748 | None\r |
749 | \r | |
750 | --*/\r | |
751 | {\r | |
752 | //\r | |
753 | // Request UdpIoOnDgramRcvdDpc as a DPC at TPL_CALLBACK\r | |
754 | //\r | |
755 | NetLibQueueDpc (TPL_CALLBACK, UdpIoOnDgramRcvdDpc, Context);\r | |
cbf316f2 | 756 | }\r |
757 | \r | |
758 | \r | |
759 | /**\r | |
760 | Issue a receive request to the UDP IO port.\r | |
761 | \r | |
762 | @param UdpIo The UDP IO port to recieve the packet from.\r | |
763 | @param CallBack The call back function to execute when receive\r | |
764 | finished.\r | |
765 | @param Context The opque context to the call back\r | |
766 | @param HeadLen The lenght of the application's header\r | |
767 | \r | |
768 | @retval EFI_ALREADY_STARTED There is already a pending receive request. Only\r | |
769 | one receive request is supported.\r | |
770 | @retval EFI_OUT_OF_RESOURCES Failed to allocate some resource.\r | |
771 | @retval EFI_SUCCESS The receive request is issued successfully.\r | |
772 | \r | |
773 | **/\r | |
774 | EFI_STATUS\r | |
775 | UdpIoRecvDatagram (\r | |
776 | IN UDP_IO_PORT *UdpIo,\r | |
777 | IN UDP_IO_CALLBACK CallBack,\r | |
778 | IN VOID *Context,\r | |
779 | IN UINT32 HeadLen\r | |
780 | )\r | |
781 | {\r | |
782 | UDP_RX_TOKEN *Token;\r | |
783 | EFI_STATUS Status;\r | |
784 | \r | |
785 | if (UdpIo->RecvRequest != NULL) {\r | |
786 | return EFI_ALREADY_STARTED;\r | |
787 | }\r | |
788 | \r | |
789 | Token = UdpIoCreateRxToken (UdpIo, CallBack, Context, HeadLen);\r | |
790 | \r | |
791 | if (Token == NULL) {\r | |
792 | return EFI_OUT_OF_RESOURCES;\r | |
793 | }\r | |
794 | \r | |
36ee91ca | 795 | UdpIo->RecvRequest = Token;\r |
cbf316f2 | 796 | Status = UdpIo->Udp->Receive (UdpIo->Udp, &Token->UdpToken);\r |
797 | \r | |
798 | if (EFI_ERROR (Status)) {\r | |
36ee91ca | 799 | UdpIo->RecvRequest = NULL;\r |
cbf316f2 | 800 | UdpIoFreeRxToken (Token);\r |
cbf316f2 | 801 | }\r |
802 | \r | |
36ee91ca | 803 | return Status;\r |
cbf316f2 | 804 | }\r |