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MdeModulePkg: Fix a bug that return type differs from the left one when assigned.
[mirror_edk2.git] / NetworkPkg / DnsDxe / DnsImpl.c
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99c048ef 1/** @file\r
2DnsDxe support functions implementation.\r
3 \r
4Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
5This program and the accompanying materials\r
6are licensed and made available under the terms and conditions of the BSD License\r
7which accompanies this distribution. The full text of the license may be found at\r
8http://opensource.org/licenses/bsd-license.php\r
9\r
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
15#include "DnsImpl.h"\r
16\r
17/**\r
18 Remove TokenEntry from TokenMap.\r
19\r
20 @param[in] TokenMap All DNSv4 Token entrys.\r
21 @param[in] TokenEntry TokenEntry need to be removed.\r
22\r
23 @retval EFI_SUCCESS Remove TokenEntry from TokenMap sucessfully.\r
24 @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.\r
25\r
26**/\r
27EFI_STATUS\r
28Dns4RemoveTokenEntry (\r
29 IN NET_MAP *TokenMap,\r
30 IN DNS4_TOKEN_ENTRY *TokenEntry\r
31 )\r
32{\r
33 NET_MAP_ITEM *Item;\r
34\r
35 //\r
36 // Find the TokenEntry first.\r
37 //\r
38 Item = NetMapFindKey (TokenMap, (VOID *) TokenEntry);\r
39\r
40 if (Item != NULL) {\r
41 //\r
42 // Remove the TokenEntry if it's found in the map.\r
43 //\r
44 NetMapRemoveItem (TokenMap, Item, NULL);\r
45\r
46 return EFI_SUCCESS;\r
47 }\r
48 \r
49 return EFI_NOT_FOUND;\r
50}\r
51\r
52/**\r
53 Remove TokenEntry from TokenMap.\r
54\r
55 @param[in] TokenMap All DNSv6 Token entrys.\r
56 @param[in] TokenEntry TokenEntry need to be removed.\r
57\r
58 @retval EFI_SUCCESS Remove TokenEntry from TokenMap sucessfully.\r
59 @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.\r
60 \r
61**/\r
62EFI_STATUS\r
63Dns6RemoveTokenEntry (\r
64 IN NET_MAP *TokenMap,\r
65 IN DNS6_TOKEN_ENTRY *TokenEntry\r
66 )\r
67{\r
68 NET_MAP_ITEM *Item;\r
69\r
70 //\r
71 // Find the TokenEntry first.\r
72 //\r
73 Item = NetMapFindKey (TokenMap, (VOID *) TokenEntry);\r
74\r
75 if (Item != NULL) {\r
76 //\r
77 // Remove the TokenEntry if it's found in the map.\r
78 //\r
79 NetMapRemoveItem (TokenMap, Item, NULL);\r
80\r
81 return EFI_SUCCESS;\r
82 }\r
83 \r
84 return EFI_NOT_FOUND;\r
85}\r
86\r
87/**\r
88 This function cancle the token specified by Arg in the Map.\r
89\r
90 @param[in] Map Pointer to the NET_MAP.\r
91 @param[in] Item Pointer to the NET_MAP_ITEM.\r
92 @param[in] Arg Pointer to the token to be cancelled. If NULL, all\r
93 the tokens in this Map will be cancelled.\r
94 This parameter is optional and may be NULL.\r
95\r
96 @retval EFI_SUCCESS The token is cancelled if Arg is NULL, or the token\r
97 is not the same as that in the Item, if Arg is not\r
98 NULL.\r
99 @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is\r
100 cancelled.\r
101\r
102**/\r
103EFI_STATUS\r
104EFIAPI\r
105Dns4CancelTokens (\r
106 IN NET_MAP *Map,\r
107 IN NET_MAP_ITEM *Item,\r
108 IN VOID *Arg OPTIONAL\r
109 )\r
110{\r
111 DNS4_TOKEN_ENTRY *TokenEntry;\r
112 NET_BUF *Packet;\r
113 UDP_IO *UdpIo;\r
114\r
115 if ((Arg != NULL) && (Item->Key != Arg)) {\r
116 return EFI_SUCCESS;\r
117 }\r
118\r
119 if (Item->Value != NULL) {\r
120 //\r
121 // If the TokenEntry is a transmit TokenEntry, the corresponding Packet is recorded in\r
122 // Item->Value.\r
123 //\r
124 Packet = (NET_BUF *) (Item->Value);\r
125 UdpIo = (UDP_IO *) (*((UINTN *) &Packet->ProtoData[0]));\r
126\r
127 UdpIoCancelSentDatagram (UdpIo, Packet);\r
128 }\r
129\r
130 //\r
131 // Remove TokenEntry from Dns4TxTokens.\r
132 //\r
133 TokenEntry = (DNS4_TOKEN_ENTRY *) Item->Key;\r
134 if (Dns4RemoveTokenEntry (Map, TokenEntry) == EFI_SUCCESS) {\r
135 TokenEntry->Token->Status = EFI_ABORTED;\r
136 gBS->SignalEvent (TokenEntry->Token->Event);\r
137 DispatchDpc ();\r
138 }\r
139\r
140 if (Arg != NULL) {\r
141 return EFI_ABORTED;\r
142 }\r
143\r
144 return EFI_SUCCESS;\r
145}\r
146\r
147/**\r
148 This function cancle the token specified by Arg in the Map.\r
149\r
150 @param[in] Map Pointer to the NET_MAP.\r
151 @param[in] Item Pointer to the NET_MAP_ITEM.\r
152 @param[in] Arg Pointer to the token to be cancelled. If NULL, all\r
153 the tokens in this Map will be cancelled.\r
154 This parameter is optional and may be NULL.\r
155\r
156 @retval EFI_SUCCESS The token is cancelled if Arg is NULL, or the token\r
157 is not the same as that in the Item, if Arg is not\r
158 NULL.\r
159 @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is\r
160 cancelled.\r
161\r
162**/\r
163EFI_STATUS\r
164EFIAPI\r
165Dns6CancelTokens (\r
166 IN NET_MAP *Map,\r
167 IN NET_MAP_ITEM *Item,\r
168 IN VOID *Arg OPTIONAL\r
169 )\r
170{\r
171 DNS6_TOKEN_ENTRY *TokenEntry;\r
172 NET_BUF *Packet;\r
173 UDP_IO *UdpIo;\r
174\r
175 if ((Arg != NULL) && (Item->Key != Arg)) {\r
176 return EFI_SUCCESS;\r
177 }\r
178\r
179 if (Item->Value != NULL) {\r
180 //\r
181 // If the TokenEntry is a transmit TokenEntry, the corresponding Packet is recorded in\r
182 // Item->Value.\r
183 //\r
184 Packet = (NET_BUF *) (Item->Value);\r
185 UdpIo = (UDP_IO *) (*((UINTN *) &Packet->ProtoData[0]));\r
186\r
187 UdpIoCancelSentDatagram (UdpIo, Packet);\r
188 }\r
189\r
190 //\r
191 // Remove TokenEntry from Dns6TxTokens.\r
192 //\r
193 TokenEntry = (DNS6_TOKEN_ENTRY *) Item->Key;\r
194 if (Dns6RemoveTokenEntry (Map, TokenEntry) == EFI_SUCCESS) {\r
195 TokenEntry->Token->Status = EFI_ABORTED;\r
196 gBS->SignalEvent (TokenEntry->Token->Event);\r
197 DispatchDpc ();\r
198 }\r
199\r
200 if (Arg != NULL) {\r
201 return EFI_ABORTED;\r
202 }\r
203\r
204 return EFI_SUCCESS;\r
205}\r
206\r
207/**\r
208 Get the TokenEntry from the TokensMap.\r
209\r
210 @param[in] TokensMap All DNSv4 Token entrys\r
211 @param[in] Token Pointer to the token to be get.\r
212 @param[out] TokenEntry Pointer to TokenEntry corresponding Token.\r
213\r
214 @retval EFI_SUCCESS Get the TokenEntry from the TokensMap sucessfully.\r
215 @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.\r
216\r
217**/\r
218EFI_STATUS\r
219EFIAPI\r
220GetDns4TokenEntry (\r
221 IN NET_MAP *TokensMap,\r
222 IN EFI_DNS4_COMPLETION_TOKEN *Token, \r
223 OUT DNS4_TOKEN_ENTRY **TokenEntry\r
224 )\r
225{\r
226 LIST_ENTRY *Entry;\r
227 \r
228 NET_MAP_ITEM *Item;\r
229 \r
230 NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {\r
231 Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r
232 *TokenEntry = (DNS4_TOKEN_ENTRY *) (Item->Key); \r
233 if ((*TokenEntry)->Token == Token) {\r
234 return EFI_SUCCESS;\r
235 }\r
236 }\r
237 \r
238 *TokenEntry = NULL;\r
239 \r
240 return EFI_NOT_FOUND;\r
241}\r
242\r
243/**\r
244 Get the TokenEntry from the TokensMap.\r
245\r
246 @param[in] TokensMap All DNSv6 Token entrys\r
247 @param[in] Token Pointer to the token to be get.\r
248 @param[out] TokenEntry Pointer to TokenEntry corresponding Token.\r
249\r
250 @retval EFI_SUCCESS Get the TokenEntry from the TokensMap sucessfully.\r
251 @retval EFI_NOT_FOUND TokenEntry is not found in TokenMap.\r
252\r
253**/\r
254EFI_STATUS\r
255EFIAPI\r
256GetDns6TokenEntry (\r
257 IN NET_MAP *TokensMap,\r
258 IN EFI_DNS6_COMPLETION_TOKEN *Token, \r
259 OUT DNS6_TOKEN_ENTRY **TokenEntry\r
260 )\r
261{\r
262 LIST_ENTRY *Entry;\r
263 \r
264 NET_MAP_ITEM *Item;\r
265 \r
266 NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {\r
267 Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r
268 *TokenEntry = (DNS6_TOKEN_ENTRY *) (Item->Key); \r
269 if ((*TokenEntry)->Token == Token) {\r
270 return EFI_SUCCESS;\r
271 }\r
272 }\r
273 \r
274 *TokenEntry =NULL;\r
275 \r
276 return EFI_NOT_FOUND;\r
277}\r
278\r
279/**\r
280 Cancel DNS4 tokens from the DNS4 instance.\r
281\r
282 @param[in] Instance Pointer to the DNS instance context data.\r
283 @param[in] Token Pointer to the token to be canceled. If NULL, all\r
284 tokens in this instance will be cancelled.\r
285 This parameter is optional and may be NULL.\r
286\r
287 @retval EFI_SUCCESS The Token is cancelled.\r
288 @retval EFI_NOT_FOUND The Token is not found.\r
289\r
290**/\r
291EFI_STATUS\r
292Dns4InstanceCancelToken (\r
293 IN DNS_INSTANCE *Instance,\r
294 IN EFI_DNS4_COMPLETION_TOKEN *Token\r
295 )\r
296{\r
297 EFI_STATUS Status;\r
298 DNS4_TOKEN_ENTRY *TokenEntry;\r
299\r
300 TokenEntry = NULL;\r
301\r
302 if(Token != NULL ) {\r
303 Status = GetDns4TokenEntry (&Instance->Dns4TxTokens, Token, &TokenEntry);\r
304 if (EFI_ERROR (Status)) {\r
305 return Status;\r
306 }\r
307 } else {\r
308 TokenEntry = NULL;\r
309 }\r
310\r
311 //\r
312 // Cancel this TokenEntry from the Dns4TxTokens map.\r
313 //\r
314 Status = NetMapIterate (&Instance->Dns4TxTokens, Dns4CancelTokens, TokenEntry);\r
315\r
316 if ((TokenEntry != NULL) && (Status == EFI_ABORTED)) {\r
317 //\r
318 // If Token isn't NULL and Status is EFI_ABORTED, the token is cancelled from\r
319 // the Dns4TxTokens and returns success.\r
320 //\r
321 if (NetMapIsEmpty (&Instance->Dns4TxTokens)) {\r
322 Instance->UdpIo->Protocol.Udp4->Cancel (Instance->UdpIo->Protocol.Udp4, &Instance->UdpIo->RecvRequest->Token.Udp4);\r
323 }\r
324 return EFI_SUCCESS;\r
325 }\r
326\r
327 ASSERT ((TokenEntry != NULL) || (0 == NetMapGetCount (&Instance->Dns4TxTokens)));\r
328 \r
329 if (NetMapIsEmpty (&Instance->Dns4TxTokens)) {\r
330 Instance->UdpIo->Protocol.Udp4->Cancel (Instance->UdpIo->Protocol.Udp4, &Instance->UdpIo->RecvRequest->Token.Udp4);\r
331 }\r
332\r
333 return EFI_SUCCESS;\r
334}\r
335\r
336/**\r
337 Cancel DNS6 tokens from the DNS6 instance.\r
338\r
339 @param[in] Instance Pointer to the DNS instance context data.\r
340 @param[in] Token Pointer to the token to be canceled. If NULL, all\r
341 tokens in this instance will be cancelled.\r
342 This parameter is optional and may be NULL.\r
343\r
344 @retval EFI_SUCCESS The Token is cancelled.\r
345 @retval EFI_NOT_FOUND The Token is not found.\r
346\r
347**/\r
348EFI_STATUS\r
349Dns6InstanceCancelToken (\r
350 IN DNS_INSTANCE *Instance,\r
351 IN EFI_DNS6_COMPLETION_TOKEN *Token\r
352 )\r
353{\r
354 EFI_STATUS Status;\r
355 DNS6_TOKEN_ENTRY *TokenEntry;\r
356\r
357 TokenEntry = NULL;\r
358\r
359 if(Token != NULL ) {\r
360 Status = GetDns6TokenEntry (&Instance->Dns6TxTokens, Token, &TokenEntry);\r
361 if (EFI_ERROR (Status)) {\r
362 return Status;\r
363 }\r
364 } else {\r
365 TokenEntry = NULL;\r
366 }\r
367\r
368 //\r
369 // Cancel this TokenEntry from the Dns6TxTokens map.\r
370 //\r
371 Status = NetMapIterate (&Instance->Dns6TxTokens, Dns6CancelTokens, TokenEntry);\r
372\r
373 if ((TokenEntry != NULL) && (Status == EFI_ABORTED)) {\r
374 //\r
375 // If Token isn't NULL and Status is EFI_ABORTED, the token is cancelled from\r
376 // the Dns6TxTokens and returns success.\r
377 //\r
378 if (NetMapIsEmpty (&Instance->Dns6TxTokens)) {\r
379 Instance->UdpIo->Protocol.Udp6->Cancel (Instance->UdpIo->Protocol.Udp6, &Instance->UdpIo->RecvRequest->Token.Udp6);\r
380 }\r
381 return EFI_SUCCESS;\r
382 }\r
383\r
384 ASSERT ((TokenEntry != NULL) || (0 == NetMapGetCount (&Instance->Dns6TxTokens)));\r
385 \r
386 if (NetMapIsEmpty (&Instance->Dns6TxTokens)) {\r
387 Instance->UdpIo->Protocol.Udp6->Cancel (Instance->UdpIo->Protocol.Udp6, &Instance->UdpIo->RecvRequest->Token.Udp6);\r
388 }\r
389\r
390 return EFI_SUCCESS;\r
391}\r
392\r
393/**\r
394 Free the resource related to the configure parameters.\r
395\r
396 @param Config The DNS configure data\r
397\r
398**/\r
399VOID\r
400Dns4CleanConfigure (\r
401 IN OUT EFI_DNS4_CONFIG_DATA *Config\r
402 )\r
403{\r
404 if (Config->DnsServerList != NULL) {\r
405 FreePool (Config->DnsServerList);\r
406 }\r
407\r
408 ZeroMem (Config, sizeof (EFI_DNS4_CONFIG_DATA));\r
409}\r
410\r
411/**\r
412 Free the resource related to the configure parameters.\r
413\r
414 @param Config The DNS configure data\r
415\r
416**/\r
417VOID\r
418Dns6CleanConfigure (\r
419 IN OUT EFI_DNS6_CONFIG_DATA *Config\r
420 )\r
421{\r
422 if (Config->DnsServerList != NULL) {\r
423 FreePool (Config->DnsServerList);\r
424 }\r
425\r
426 ZeroMem (Config, sizeof (EFI_DNS6_CONFIG_DATA));\r
427}\r
428\r
429/**\r
430 Allocate memory for configure parameter such as timeout value for Dst,\r
431 then copy the configure parameter from Src to Dst.\r
432\r
433 @param[out] Dst The destination DHCP configure data.\r
434 @param[in] Src The source DHCP configure data.\r
435\r
436 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
437 @retval EFI_SUCCESS The configure is copied.\r
438\r
439**/\r
440EFI_STATUS\r
441Dns4CopyConfigure (\r
442 OUT EFI_DNS4_CONFIG_DATA *Dst,\r
443 IN EFI_DNS4_CONFIG_DATA *Src\r
444 )\r
445{\r
446 UINTN Len;\r
447 UINT32 Index;\r
448\r
449 CopyMem (Dst, Src, sizeof (*Dst));\r
450 Dst->DnsServerList = NULL;\r
451\r
452 //\r
453 // Allocate a memory then copy DnsServerList to it\r
454 //\r
455 if (Src->DnsServerList != NULL) {\r
456 Len = Src->DnsServerListCount * sizeof (EFI_IPv4_ADDRESS);\r
457 Dst->DnsServerList = AllocatePool (Len);\r
458 if (Dst->DnsServerList == NULL) {\r
459 Dns4CleanConfigure (Dst);\r
460 return EFI_OUT_OF_RESOURCES;\r
461 }\r
462\r
463 for (Index = 0; Index < Src->DnsServerListCount; Index++) {\r
464 CopyMem (&Dst->DnsServerList[Index], &Src->DnsServerList[Index], sizeof (EFI_IPv4_ADDRESS));\r
465 }\r
466 }\r
467\r
468 return EFI_SUCCESS;\r
469}\r
470\r
471/**\r
472 Allocate memory for configure parameter such as timeout value for Dst,\r
473 then copy the configure parameter from Src to Dst.\r
474\r
475 @param[out] Dst The destination DHCP configure data.\r
476 @param[in] Src The source DHCP configure data.\r
477\r
478 @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
479 @retval EFI_SUCCESS The configure is copied.\r
480\r
481**/\r
482EFI_STATUS\r
483Dns6CopyConfigure (\r
484 OUT EFI_DNS6_CONFIG_DATA *Dst,\r
485 IN EFI_DNS6_CONFIG_DATA *Src\r
486 )\r
487{\r
488 UINTN Len;\r
489 UINT32 Index;\r
490\r
491 CopyMem (Dst, Src, sizeof (*Dst));\r
492 Dst->DnsServerList = NULL;\r
493\r
494 //\r
495 // Allocate a memory then copy DnsServerList to it\r
496 //\r
497 if (Src->DnsServerList != NULL) {\r
498 Len = Src->DnsServerCount * sizeof (EFI_IPv6_ADDRESS);\r
499 Dst->DnsServerList = AllocatePool (Len);\r
500 if (Dst->DnsServerList == NULL) {\r
501 Dns6CleanConfigure (Dst);\r
502 return EFI_OUT_OF_RESOURCES;\r
503 }\r
504\r
505 for (Index = 0; Index < Src->DnsServerCount; Index++) {\r
506 CopyMem (&Dst->DnsServerList[Index], &Src->DnsServerList[Index], sizeof (EFI_IPv6_ADDRESS));\r
507 }\r
508 }\r
509\r
510 return EFI_SUCCESS;\r
511}\r
512\r
513/**\r
514 Callback of Dns packet. Does nothing.\r
515\r
516 @param Arg The context.\r
517\r
518**/\r
519VOID\r
520EFIAPI\r
521DnsDummyExtFree (\r
522 IN VOID *Arg\r
523 )\r
524{\r
525}\r
526\r
527/**\r
528 Poll the UDP to get the IP4 default address, which may be retrieved\r
529 by DHCP. \r
530 \r
531 The default time out value is 5 seconds. If IP has retrieved the default address, \r
532 the UDP is reconfigured.\r
533\r
534 @param Instance The DNS instance\r
535 @param UdpIo The UDP_IO to poll\r
536 @param UdpCfgData The UDP configure data to reconfigure the UDP_IO\r
537\r
538 @retval TRUE The default address is retrieved and UDP is reconfigured.\r
539 @retval FALSE Some error occured.\r
540\r
541**/\r
542BOOLEAN\r
543Dns4GetMapping (\r
544 IN DNS_INSTANCE *Instance,\r
545 IN UDP_IO *UdpIo,\r
546 IN EFI_UDP4_CONFIG_DATA *UdpCfgData\r
547 )\r
548{\r
549 DNS_SERVICE *Service;\r
550 EFI_IP4_MODE_DATA Ip4Mode;\r
551 EFI_UDP4_PROTOCOL *Udp;\r
552 EFI_STATUS Status;\r
553\r
554 ASSERT (Instance->Dns4CfgData.UseDefaultSetting);\r
555\r
556 Service = Instance->Service;\r
557 Udp = UdpIo->Protocol.Udp4;\r
558\r
559 Status = gBS->SetTimer (\r
560 Service->TimerToGetMap,\r
561 TimerRelative,\r
562 DNS_TIME_TO_GETMAP * TICKS_PER_SECOND\r
563 );\r
564 if (EFI_ERROR (Status)) {\r
565 return FALSE;\r
566 }\r
567\r
568 while (!EFI_ERROR (gBS->CheckEvent (Service->TimerToGetMap))) {\r
569 Udp->Poll (Udp);\r
570\r
571 if (!EFI_ERROR (Udp->GetModeData (Udp, NULL, &Ip4Mode, NULL, NULL)) &&\r
572 Ip4Mode.IsConfigured) {\r
573\r
574 Udp->Configure (Udp, NULL);\r
575 return (BOOLEAN) (Udp->Configure (Udp, UdpCfgData) == EFI_SUCCESS);\r
576 }\r
577 }\r
578\r
579 return FALSE;\r
580}\r
581\r
582/**\r
583 Configure the opened Udp6 instance until the corresponding Ip6 instance\r
584 has been configured.\r
585\r
586 @param Instance The DNS instance\r
587 @param UdpIo The UDP_IO to poll\r
588 @param UdpCfgData The UDP configure data to reconfigure the UDP_IO\r
589\r
590 @retval TRUE Configure the Udp6 instance successfully.\r
591 @retval FALSE Some error occured.\r
592\r
593**/\r
594BOOLEAN\r
595Dns6GetMapping (\r
596 IN DNS_INSTANCE *Instance,\r
597 IN UDP_IO *UdpIo,\r
598 IN EFI_UDP6_CONFIG_DATA *UdpCfgData\r
599 )\r
600{\r
601 DNS_SERVICE *Service;\r
602 EFI_IP6_MODE_DATA Ip6Mode;\r
603 EFI_UDP6_PROTOCOL *Udp;\r
604 EFI_STATUS Status;\r
605\r
606 Service = Instance->Service;\r
607 Udp = UdpIo->Protocol.Udp6;\r
608\r
609 Status = gBS->SetTimer (\r
610 Service->TimerToGetMap,\r
611 TimerRelative,\r
612 DNS_TIME_TO_GETMAP * TICKS_PER_SECOND\r
613 );\r
614 if (EFI_ERROR (Status)) {\r
615 return FALSE;\r
616 }\r
617\r
618 while (!EFI_ERROR (gBS->CheckEvent (Service->TimerToGetMap))) {\r
619 Udp->Poll (Udp);\r
620\r
621 if (!EFI_ERROR (Udp->GetModeData (Udp, NULL, &Ip6Mode, NULL, NULL)) &&\r
622 Ip6Mode.IsConfigured) {\r
623\r
624 Udp->Configure (Udp, NULL);\r
625 return (BOOLEAN) (Udp->Configure (Udp, UdpCfgData) == EFI_SUCCESS);\r
626 }\r
627 }\r
628\r
629 return FALSE;\r
630}\r
631\r
632/**\r
633 Configure the UDP.\r
634 \r
635 @param Instance The DNS session\r
636 @param UdpIo The UDP_IO instance\r
637 \r
638 @retval EFI_SUCCESS The UDP is successfully configured for the\r
639 session.\r
640\r
641**/\r
642EFI_STATUS\r
643Dns4ConfigUdp (\r
644 IN DNS_INSTANCE *Instance,\r
645 IN UDP_IO *UdpIo\r
646 )\r
647{\r
648 EFI_DNS4_CONFIG_DATA *Config;\r
649 EFI_UDP4_CONFIG_DATA UdpConfig;\r
650 EFI_STATUS Status;\r
651\r
652 Config = &Instance->Dns4CfgData;\r
653\r
654 UdpConfig.AcceptBroadcast = FALSE;\r
655 UdpConfig.AcceptPromiscuous = FALSE;\r
656 UdpConfig.AcceptAnyPort = FALSE;\r
657 UdpConfig.AllowDuplicatePort = FALSE;\r
658 UdpConfig.TypeOfService = 0;\r
659 UdpConfig.TimeToLive = 128;\r
660 UdpConfig.DoNotFragment = FALSE;\r
661 UdpConfig.ReceiveTimeout = 0;\r
662 UdpConfig.TransmitTimeout = 0;\r
663 UdpConfig.UseDefaultAddress = Config->UseDefaultSetting;\r
664 UdpConfig.SubnetMask = Config->SubnetMask;\r
665 UdpConfig.StationPort = Config->LocalPort;\r
666 UdpConfig.RemotePort = DNS_SERVER_PORT;\r
667\r
668 CopyMem (&UdpConfig.StationAddress, &Config->StationIp, sizeof (EFI_IPv4_ADDRESS));\r
669 CopyMem (&UdpConfig.RemoteAddress, &Instance->SessionDnsServer.v4, sizeof (EFI_IPv4_ADDRESS));\r
670\r
671 Status = UdpIo->Protocol.Udp4->Configure (UdpIo->Protocol.Udp4, &UdpConfig);\r
672\r
673 if ((Status == EFI_NO_MAPPING) && Dns4GetMapping (Instance, UdpIo, &UdpConfig)) {\r
674 return EFI_SUCCESS;\r
675 }\r
676 \r
677 return Status;\r
678}\r
679\r
680/**\r
681 Configure the UDP.\r
682 \r
683 @param Instance The DNS session\r
684 @param UdpIo The UDP_IO instance\r
685\r
686 @retval EFI_SUCCESS The UDP is successfully configured for the\r
687 session.\r
688\r
689**/\r
690EFI_STATUS\r
691Dns6ConfigUdp (\r
692 IN DNS_INSTANCE *Instance,\r
693 IN UDP_IO *UdpIo\r
694 )\r
695{\r
696 EFI_DNS6_CONFIG_DATA *Config;\r
697 EFI_UDP6_CONFIG_DATA UdpConfig;\r
698 EFI_STATUS Status;\r
699\r
700 Config = &Instance->Dns6CfgData;\r
701\r
702 UdpConfig.AcceptPromiscuous = FALSE;\r
703 UdpConfig.AcceptAnyPort = FALSE;\r
704 UdpConfig.AllowDuplicatePort = FALSE;\r
705 UdpConfig.TrafficClass = 0;\r
706 UdpConfig.HopLimit = 128;\r
707 UdpConfig.ReceiveTimeout = 0;\r
708 UdpConfig.TransmitTimeout = 0;\r
709 UdpConfig.StationPort = Config->LocalPort;\r
710 UdpConfig.RemotePort = DNS_SERVER_PORT;\r
711 CopyMem (&UdpConfig.StationAddress, &Config->StationIp, sizeof (EFI_IPv6_ADDRESS));\r
712 CopyMem (&UdpConfig.RemoteAddress, &Instance->SessionDnsServer.v6, sizeof (EFI_IPv6_ADDRESS));\r
713\r
714 Status = UdpIo->Protocol.Udp6->Configure (UdpIo->Protocol.Udp6, &UdpConfig);\r
715\r
716 if ((Status == EFI_NO_MAPPING) && Dns6GetMapping (Instance, UdpIo, &UdpConfig)) {\r
717 return EFI_SUCCESS;\r
718 }\r
719 \r
720 return Status;\r
721}\r
722\r
723/**\r
724 Update Dns4 cache to shared list of caches of all DNSv4 instances.\r
725 \r
726 @param Dns4CacheList All Dns4 cache list.\r
727 @param DeleteFlag If FALSE, this function is to add one entry to the DNS Cache. \r
728 If TRUE, this function will delete matching DNS Cache entry. \r
729 @param Override If TRUE, the matching DNS cache entry will be overwritten with the supplied parameter. \r
730 If FALSE, EFI_ACCESS_DENIED will be returned if the entry to be added is already exists.\r
731 @param DnsCacheEntry Entry Pointer to DNS Cache entry.\r
732\r
733 @retval EFI_SUCCESS Update Dns4 cache successfully.\r
734 @retval Others Failed to update Dns4 cache. \r
735 \r
736**/ \r
737EFI_STATUS\r
738EFIAPI\r
739UpdateDns4Cache (\r
740 IN LIST_ENTRY *Dns4CacheList,\r
741 IN BOOLEAN DeleteFlag,\r
742 IN BOOLEAN Override,\r
743 IN EFI_DNS4_CACHE_ENTRY DnsCacheEntry\r
744 )\r
745{\r
746 DNS4_CACHE *NewDnsCache; \r
747 DNS4_CACHE *Item;\r
748 LIST_ENTRY *Entry;\r
749 LIST_ENTRY *Next;\r
750\r
751 NewDnsCache = NULL;\r
752 Item = NULL;\r
753 \r
754 //\r
755 // Search the database for the matching EFI_DNS_CACHE_ENTRY\r
756 //\r
757 NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns4CacheList) {\r
758 Item = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);\r
759 if (StrCmp (DnsCacheEntry.HostName, Item->DnsCache.HostName) == 0 && \\r
760 CompareMem (DnsCacheEntry.IpAddress, Item->DnsCache.IpAddress, sizeof (EFI_IPv4_ADDRESS)) == 0) {\r
761 //\r
762 // This is the Dns cache entry\r
763 //\r
764 if (DeleteFlag) {\r
765 //\r
766 // Delete matching DNS Cache entry\r
767 //\r
768 RemoveEntryList (&Item->AllCacheLink);\r
769 \r
770 return EFI_SUCCESS;\r
771 } else if (Override) {\r
772 //\r
773 // Update this one\r
774 //\r
775 Item->DnsCache.Timeout = DnsCacheEntry.Timeout;\r
776 \r
777 return EFI_SUCCESS;\r
778 }else {\r
779 return EFI_ACCESS_DENIED;\r
780 }\r
781 }\r
782 }\r
783\r
784 //\r
785 // Add new one\r
786 //\r
787 NewDnsCache = AllocatePool (sizeof (DNS4_CACHE));\r
788 if (NewDnsCache == NULL) { \r
789 return EFI_OUT_OF_RESOURCES;\r
790 }\r
791 \r
792 InitializeListHead (&NewDnsCache->AllCacheLink);\r
793 \r
794 NewDnsCache->DnsCache.HostName = AllocatePool (StrSize (DnsCacheEntry.HostName));\r
795 if (NewDnsCache->DnsCache.HostName == NULL) { \r
796 return EFI_OUT_OF_RESOURCES;\r
797 }\r
798 \r
799 CopyMem (NewDnsCache->DnsCache.HostName, DnsCacheEntry.HostName, StrSize (DnsCacheEntry.HostName));\r
800\r
801 NewDnsCache->DnsCache.IpAddress = AllocatePool (sizeof (EFI_IPv4_ADDRESS));\r
802 if (NewDnsCache->DnsCache.IpAddress == NULL) { \r
803 return EFI_OUT_OF_RESOURCES;\r
804 }\r
805\r
806 CopyMem (NewDnsCache->DnsCache.IpAddress, DnsCacheEntry.IpAddress, sizeof (EFI_IPv4_ADDRESS));\r
807\r
808 NewDnsCache->DnsCache.Timeout = DnsCacheEntry.Timeout;\r
809 \r
810 InsertTailList (Dns4CacheList, &NewDnsCache->AllCacheLink);\r
811 \r
812 return EFI_SUCCESS;\r
813}\r
814\r
815/**\r
816 Update Dns6 cache to shared list of caches of all DNSv6 instances. \r
817\r
818 @param Dns6CacheList All Dns6 cache list.\r
819 @param DeleteFlag If FALSE, this function is to add one entry to the DNS Cache. \r
820 If TRUE, this function will delete matching DNS Cache entry. \r
821 @param Override If TRUE, the matching DNS cache entry will be overwritten with the supplied parameter. \r
822 If FALSE, EFI_ACCESS_DENIED will be returned if the entry to be added is already exists.\r
823 @param DnsCacheEntry Entry Pointer to DNS Cache entry.\r
824 \r
825 @retval EFI_SUCCESS Update Dns6 cache successfully.\r
826 @retval Others Failed to update Dns6 cache.\r
827**/ \r
828EFI_STATUS\r
829EFIAPI\r
830UpdateDns6Cache (\r
831 IN LIST_ENTRY *Dns6CacheList,\r
832 IN BOOLEAN DeleteFlag,\r
833 IN BOOLEAN Override,\r
834 IN EFI_DNS6_CACHE_ENTRY DnsCacheEntry\r
835 )\r
836{\r
837 DNS6_CACHE *NewDnsCache; \r
838 DNS6_CACHE *Item;\r
839 LIST_ENTRY *Entry;\r
840 LIST_ENTRY *Next;\r
841\r
842 NewDnsCache = NULL;\r
843 Item = NULL;\r
844 \r
845 //\r
846 // Search the database for the matching EFI_DNS_CACHE_ENTRY\r
847 //\r
848 NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns6CacheList) {\r
849 Item = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);\r
850 if (StrCmp (DnsCacheEntry.HostName, Item->DnsCache.HostName) == 0 && \\r
851 CompareMem (DnsCacheEntry.IpAddress, Item->DnsCache.IpAddress, sizeof (EFI_IPv6_ADDRESS)) == 0) {\r
852 //\r
853 // This is the Dns cache entry\r
854 //\r
855 if (DeleteFlag) {\r
856 //\r
857 // Delete matching DNS Cache entry\r
858 //\r
859 RemoveEntryList (&Item->AllCacheLink);\r
860 \r
861 return EFI_SUCCESS;\r
862 } else if (Override) {\r
863 //\r
864 // Update this one\r
865 //\r
866 Item->DnsCache.Timeout = DnsCacheEntry.Timeout;\r
867 \r
868 return EFI_SUCCESS;\r
869 }else {\r
870 return EFI_ACCESS_DENIED;\r
871 }\r
872 }\r
873 }\r
874\r
875 //\r
876 // Add new one\r
877 //\r
878 NewDnsCache = AllocatePool (sizeof (DNS6_CACHE));\r
879 if (NewDnsCache == NULL) { \r
880 return EFI_OUT_OF_RESOURCES;\r
881 }\r
882 \r
883 InitializeListHead (&NewDnsCache->AllCacheLink);\r
884 \r
885 NewDnsCache->DnsCache.HostName = AllocatePool (StrSize (DnsCacheEntry.HostName));\r
886 if (NewDnsCache->DnsCache.HostName == NULL) { \r
887 return EFI_OUT_OF_RESOURCES;\r
888 }\r
889 \r
890 CopyMem (NewDnsCache->DnsCache.HostName, DnsCacheEntry.HostName, StrSize (DnsCacheEntry.HostName));\r
891\r
892 NewDnsCache->DnsCache.IpAddress = AllocatePool (sizeof (EFI_IPv6_ADDRESS));\r
893 if (NewDnsCache->DnsCache.IpAddress == NULL) { \r
894 return EFI_OUT_OF_RESOURCES;\r
895 }\r
896 \r
897 CopyMem (NewDnsCache->DnsCache.IpAddress, DnsCacheEntry.IpAddress, sizeof (EFI_IPv6_ADDRESS));\r
898\r
899 NewDnsCache->DnsCache.Timeout = DnsCacheEntry.Timeout;\r
900 \r
901 InsertTailList (Dns6CacheList, &NewDnsCache->AllCacheLink);\r
902 \r
903 return EFI_SUCCESS;\r
904}\r
905\r
906/**\r
907 Add Dns4 ServerIp to common list of addresses of all configured DNSv4 server. \r
908\r
909 @param Dns4ServerList Common list of addresses of all configured DNSv4 server. \r
910 @param ServerIp DNS server Ip. \r
911\r
912 @retval EFI_SUCCESS Add Dns4 ServerIp to common list successfully.\r
913 @retval Others Failed to add Dns4 ServerIp to common list.\r
914 \r
915**/ \r
916EFI_STATUS\r
917EFIAPI\r
918AddDns4ServerIp (\r
919 IN LIST_ENTRY *Dns4ServerList,\r
920 IN EFI_IPv4_ADDRESS ServerIp\r
921 )\r
922{\r
923 DNS4_SERVER_IP *NewServerIp; \r
924 DNS4_SERVER_IP *Item;\r
925 LIST_ENTRY *Entry;\r
926 LIST_ENTRY *Next;\r
927\r
928 NewServerIp = NULL;\r
929 Item = NULL;\r
930 \r
931 //\r
932 // Search the database for the matching ServerIp\r
933 //\r
934 NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns4ServerList) {\r
935 Item = NET_LIST_USER_STRUCT (Entry, DNS4_SERVER_IP, AllServerLink);\r
936 if (CompareMem (&Item->Dns4ServerIp, &ServerIp, sizeof (EFI_IPv4_ADDRESS)) == 0) {\r
937 //\r
938 // Already done.\r
939 // \r
940 return EFI_SUCCESS;\r
941 }\r
942 }\r
943\r
944 //\r
945 // Add new one\r
946 //\r
947 NewServerIp = AllocatePool (sizeof (DNS4_SERVER_IP));\r
948 if (NewServerIp == NULL) { \r
949 return EFI_OUT_OF_RESOURCES;\r
950 }\r
951 \r
952 InitializeListHead (&NewServerIp->AllServerLink);\r
953 \r
954 CopyMem (&NewServerIp->Dns4ServerIp, &ServerIp, sizeof (EFI_IPv4_ADDRESS));\r
955 \r
956 InsertTailList (Dns4ServerList, &NewServerIp->AllServerLink);\r
957 \r
958 return EFI_SUCCESS;\r
959}\r
960\r
961/**\r
962 Add Dns6 ServerIp to common list of addresses of all configured DNSv6 server. \r
963\r
964 @param Dns6ServerList Common list of addresses of all configured DNSv6 server. \r
965 @param ServerIp DNS server Ip. \r
966\r
967 @retval EFI_SUCCESS Add Dns6 ServerIp to common list successfully.\r
968 @retval Others Failed to add Dns6 ServerIp to common list.\r
969 \r
970**/ \r
971EFI_STATUS\r
972EFIAPI\r
973AddDns6ServerIp (\r
974 IN LIST_ENTRY *Dns6ServerList,\r
975 IN EFI_IPv6_ADDRESS ServerIp\r
976 )\r
977{\r
978 DNS6_SERVER_IP *NewServerIp; \r
979 DNS6_SERVER_IP *Item;\r
980 LIST_ENTRY *Entry;\r
981 LIST_ENTRY *Next;\r
982\r
983 NewServerIp = NULL;\r
984 Item = NULL;\r
985 \r
986 //\r
987 // Search the database for the matching ServerIp\r
988 //\r
989 NET_LIST_FOR_EACH_SAFE (Entry, Next, Dns6ServerList) {\r
990 Item = NET_LIST_USER_STRUCT (Entry, DNS6_SERVER_IP, AllServerLink);\r
991 if (CompareMem (&Item->Dns6ServerIp, &ServerIp, sizeof (EFI_IPv6_ADDRESS)) == 0) {\r
992 //\r
993 // Already done.\r
994 // \r
995 return EFI_SUCCESS;\r
996 }\r
997 }\r
998\r
999 //\r
1000 // Add new one\r
1001 //\r
1002 NewServerIp = AllocatePool (sizeof (DNS6_SERVER_IP));\r
1003 if (NewServerIp == NULL) { \r
1004 return EFI_OUT_OF_RESOURCES;\r
1005 }\r
1006 \r
1007 InitializeListHead (&NewServerIp->AllServerLink);\r
1008 \r
1009 CopyMem (&NewServerIp->Dns6ServerIp, &ServerIp, sizeof (EFI_IPv6_ADDRESS));\r
1010 \r
1011 InsertTailList (Dns6ServerList, &NewServerIp->AllServerLink);\r
1012 \r
1013 return EFI_SUCCESS;\r
1014}\r
1015\r
1016/**\r
1017 Find out whether the response is valid or invalid.\r
1018\r
1019 @param TokensMap All DNS transmittal Tokens entry. \r
1020 @param Identification Identification for queried packet. \r
1021 @param Type Type for queried packet.\r
1022 @param Item Return corresponding Token entry.\r
1023\r
1024 @retval TRUE The response is valid.\r
1025 @retval FALSE The response is invalid.\r
1026 \r
1027**/ \r
1028BOOLEAN\r
1029IsValidDnsResponse (\r
1030 IN NET_MAP *TokensMap,\r
1031 IN UINT16 Identification,\r
1032 IN UINT16 Type,\r
1033 OUT NET_MAP_ITEM **Item\r
1034 )\r
1035{\r
1036 LIST_ENTRY *Entry;\r
1037\r
1038 NET_BUF *Packet;\r
1039 UINT8 *TxString;\r
1040 DNS_HEADER *DnsHeader;\r
1041 CHAR8 *QueryName;\r
1042 DNS_QUERY_SECTION *QuerySection;\r
1043\r
1044 NET_LIST_FOR_EACH (Entry, &TokensMap->Used) {\r
1045 *Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r
1046 Packet = (NET_BUF *) ((*Item)->Value);\r
1047 if (Packet == NULL){\r
1048 \r
1049 continue;\r
1050 } else {\r
1051 TxString = NetbufGetByte (Packet, 0, NULL);\r
1052 DnsHeader = (DNS_HEADER *) TxString;\r
1053 QueryName = (CHAR8 *) (TxString + sizeof (*DnsHeader));\r
1054 QuerySection = (DNS_QUERY_SECTION *) (QueryName + AsciiStrLen (QueryName) + 1);\r
1055\r
1056 DnsHeader->Identification = NTOHS (DnsHeader->Identification);\r
1057 QuerySection->Type = NTOHS (QuerySection->Type);\r
1058 \r
1059 if (DnsHeader->Identification == Identification && QuerySection->Type == Type) {\r
1060 return TRUE;\r
1061 }\r
1062 } \r
1063 }\r
1064 \r
1065 *Item =NULL;\r
1066 \r
1067 return FALSE;\r
1068}\r
1069\r
1070/**\r
1071 Parse Dns Response.\r
1072\r
1073 @param Instance The DNS instance\r
1074 @param RxString Received buffer.\r
1075 @param Completed Flag to indicate that Dns response is valid. \r
1076 \r
1077 @retval EFI_SUCCESS Parse Dns Response successfully.\r
1078 @retval Others Failed to parse Dns Response.\r
1079 \r
1080**/ \r
1081EFI_STATUS\r
1082ParseDnsResponse (\r
1083 IN OUT DNS_INSTANCE *Instance,\r
1084 IN UINT8 *RxString,\r
1085 OUT BOOLEAN *Completed\r
1086 )\r
1087{\r
1088 DNS_HEADER *DnsHeader;\r
1089 \r
1090 CHAR8 *QueryName;\r
1091 DNS_QUERY_SECTION *QuerySection;\r
1092 \r
1093 CHAR8 *AnswerName;\r
1094 DNS_ANSWER_SECTION *AnswerSection;\r
1095 UINT8 *AnswerData;\r
1096\r
1097 NET_MAP_ITEM *Item;\r
1098 DNS4_TOKEN_ENTRY *Dns4TokenEntry;\r
1099 DNS6_TOKEN_ENTRY *Dns6TokenEntry;\r
1100 \r
1101 UINT32 IpCount;\r
1102 UINT32 AnswerSectionNum;\r
1103 \r
1104 EFI_IPv4_ADDRESS *HostAddr4;\r
1105 EFI_IPv6_ADDRESS *HostAddr6;\r
1106\r
1107 EFI_DNS4_CACHE_ENTRY *Dns4CacheEntry;\r
1108 EFI_DNS6_CACHE_ENTRY *Dns6CacheEntry;\r
1109\r
1110 EFI_STATUS Status;\r
1111\r
1112 EFI_TPL OldTpl;\r
1113 \r
1114 Item = NULL;\r
1115 Dns4TokenEntry = NULL;\r
1116 Dns6TokenEntry = NULL;\r
1117 \r
1118 IpCount = 0;\r
1119 AnswerSectionNum = 0;\r
1120 \r
1121 HostAddr4 = NULL;\r
1122 HostAddr6 = NULL;\r
1123 \r
1124 Dns4CacheEntry = NULL;\r
1125 Dns6CacheEntry = NULL;\r
1126\r
1127 *Completed = TRUE;\r
1128 Status = EFI_SUCCESS;\r
1129 \r
1130 //\r
1131 // Get header\r
1132 //\r
1133 DnsHeader = (DNS_HEADER *) RxString;\r
1134 \r
1135 DnsHeader->Identification = NTOHS (DnsHeader->Identification);\r
1136 DnsHeader->Flags.Uint16 = NTOHS (DnsHeader->Flags.Uint16);\r
1137 DnsHeader->QuestionsNum = NTOHS (DnsHeader->QuestionsNum);\r
1138 DnsHeader->AnswersNum = NTOHS (DnsHeader->AnswersNum);\r
1139 DnsHeader->AuthorityNum = NTOHS (DnsHeader->AuthorityNum);\r
1140 DnsHeader->AditionalNum = NTOHS (DnsHeader->AditionalNum);\r
1141\r
1142 //\r
1143 // Get Query name\r
1144 //\r
1145 QueryName = (CHAR8 *) (RxString + sizeof (*DnsHeader));\r
1146\r
1147 //\r
1148 // Get query section\r
1149 //\r
1150 QuerySection = (DNS_QUERY_SECTION *) (QueryName + AsciiStrLen (QueryName) + 1);\r
1151 QuerySection->Type = NTOHS (QuerySection->Type);\r
1152 QuerySection->Class = NTOHS (QuerySection->Class);\r
1153\r
1154 //\r
1155 // Get Answer name\r
1156 //\r
1157 AnswerName = (CHAR8 *) QuerySection + sizeof (*QuerySection);\r
1158\r
1159 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
1160\r
1161 //\r
1162 // Check DnsResponse Validity, if so, also get a valid NET_MAP_ITEM.\r
1163 //\r
1164 if (Instance->Service->IpVersion == IP_VERSION_4) {\r
1165 if (!IsValidDnsResponse (&Instance->Dns4TxTokens, DnsHeader->Identification, QuerySection->Type, &Item)) {\r
1166 *Completed = FALSE;\r
1167 Status = EFI_ABORTED;\r
1168 goto ON_EXIT;\r
1169 }\r
1170 ASSERT (Item != NULL);\r
1171 Dns4TokenEntry = (DNS4_TOKEN_ENTRY *) (Item->Key);\r
1172 } else {\r
1173 if (!IsValidDnsResponse (&Instance->Dns6TxTokens, DnsHeader->Identification, QuerySection->Type, &Item)) {\r
1174 *Completed = FALSE;\r
1175 Status = EFI_ABORTED;\r
1176 goto ON_EXIT;\r
1177 }\r
1178 ASSERT (Item != NULL);\r
1179 Dns6TokenEntry = (DNS6_TOKEN_ENTRY *) (Item->Key);\r
1180 }\r
1181 \r
1182 //\r
1183 // Continue Check Some Errors.\r
1184 //\r
1185 if (DnsHeader->Flags.Bits.RCode != DNS_FLAGS_RCODE_NO_ERROR || DnsHeader->AnswersNum < 1 || \\r
1186 DnsHeader->Flags.Bits.QR != DNS_FLAGS_QR_RESPONSE || QuerySection->Class != DNS_CLASS_INET) {\r
1187 Status = EFI_ABORTED;\r
1188 goto ON_EXIT;\r
1189 }\r
1190\r
1191 //\r
1192 // Free the sending packet.\r
1193 //\r
1194 if (Item->Value != NULL) {\r
1195 NetbufFree ((NET_BUF *) (Item->Value));\r
1196 }\r
1197 \r
1198 //\r
1199 // Check the Query type, do some buffer allocations.\r
1200 //\r
1201 if (QuerySection->Type == DNS_TYPE_A) {\r
1202 Dns4TokenEntry->Token->RspData.H2AData = AllocatePool (sizeof (DNS_HOST_TO_ADDR_DATA));\r
1203 ASSERT (Dns4TokenEntry->Token->RspData.H2AData != NULL);\r
1204 Dns4TokenEntry->Token->RspData.H2AData->IpList = AllocatePool (DnsHeader->AnswersNum * sizeof (EFI_IPv4_ADDRESS));\r
1205 ASSERT (Dns4TokenEntry->Token->RspData.H2AData->IpList != NULL);\r
1206 } else if (QuerySection->Type == DNS_TYPE_AAAA) {\r
1207 Dns6TokenEntry->Token->RspData.H2AData = AllocatePool (sizeof (DNS6_HOST_TO_ADDR_DATA));\r
1208 ASSERT (Dns6TokenEntry->Token->RspData.H2AData != NULL);\r
1209 Dns6TokenEntry->Token->RspData.H2AData->IpList = AllocatePool (DnsHeader->AnswersNum * sizeof (EFI_IPv6_ADDRESS));\r
1210 ASSERT (Dns6TokenEntry->Token->RspData.H2AData->IpList != NULL);\r
1211 } else {\r
1212 Status = EFI_UNSUPPORTED;\r
1213 goto ON_EXIT;\r
1214 }\r
1215\r
1216 //\r
1217 // Processing AnswerSection.\r
1218 //\r
1219 while (AnswerSectionNum < DnsHeader->AnswersNum) {\r
1220 //\r
1221 // Answer name should be PTR.\r
1222 //\r
1223 ASSERT ((*(UINT8 *) AnswerName & 0xC0) == 0xC0);\r
1224 \r
1225 //\r
1226 // Get Answer section.\r
1227 //\r
1228 AnswerSection = (DNS_ANSWER_SECTION *) (AnswerName + sizeof (UINT16));\r
1229 AnswerSection->Type = NTOHS (AnswerSection->Type);\r
1230 AnswerSection->Class = NTOHS (AnswerSection->Class);\r
1231 AnswerSection->Ttl = NTOHL (AnswerSection->Ttl);\r
1232 AnswerSection->DataLength = NTOHS (AnswerSection->DataLength);\r
1233\r
1234 ASSERT (AnswerSection->Class == DNS_CLASS_INET);\r
1235\r
1236 if (AnswerSection->Type == QuerySection->Type) {\r
1237 switch (AnswerSection->Type) {\r
1238 case DNS_TYPE_A:\r
1239 //\r
1240 // This is address entry, get Data.\r
1241 //\r
1242 ASSERT (AnswerSection->DataLength == 4);\r
1243 \r
1244 HostAddr4 = Dns4TokenEntry->Token->RspData.H2AData->IpList;\r
1245 AnswerData = (UINT8 *) AnswerSection + sizeof (*AnswerSection);\r
1246 CopyMem (&HostAddr4[IpCount], AnswerData, sizeof (EFI_IPv4_ADDRESS));\r
1247\r
1248 //\r
1249 // Update DNS cache dynamically.\r
1250 //\r
1251 if (Dns4CacheEntry != NULL) {\r
1252 if (Dns4CacheEntry->HostName != NULL) {\r
1253 FreePool (Dns4CacheEntry->HostName);\r
1254 }\r
1255\r
1256 if (Dns4CacheEntry->IpAddress != NULL) {\r
1257 FreePool (Dns4CacheEntry->IpAddress);\r
1258 }\r
1259 \r
1260 FreePool (Dns4CacheEntry);\r
1261 }\r
1262\r
1263 // \r
1264 // Allocate new CacheEntry pool.\r
1265 //\r
1266 Dns4CacheEntry = AllocateZeroPool (sizeof (EFI_DNS4_CACHE_ENTRY));\r
1267 ASSERT (Dns4CacheEntry != NULL);\r
1268 Dns4CacheEntry->HostName = AllocateZeroPool (2 * (StrLen(Dns4TokenEntry->QueryHostName) + 1));\r
1269 ASSERT (Dns4CacheEntry->HostName != NULL);\r
1270 CopyMem (Dns4CacheEntry->HostName, Dns4TokenEntry->QueryHostName, 2 * (StrLen(Dns4TokenEntry->QueryHostName) + 1));\r
1271 Dns4CacheEntry->IpAddress = AllocateZeroPool (sizeof (EFI_IPv4_ADDRESS));\r
1272 ASSERT (Dns4CacheEntry->IpAddress != NULL);\r
1273 CopyMem (Dns4CacheEntry->IpAddress, AnswerData, sizeof (EFI_IPv4_ADDRESS));\r
1274 Dns4CacheEntry->Timeout = AnswerSection->Ttl;\r
1275 \r
1276 UpdateDns4Cache (&mDriverData->Dns4CacheList, FALSE, TRUE, *Dns4CacheEntry); \r
1277\r
1278 IpCount ++; \r
1279 break;\r
1280 case DNS_TYPE_AAAA:\r
1281 //\r
1282 // This is address entry, get Data.\r
1283 //\r
1284 ASSERT (AnswerSection->DataLength == 16);\r
1285 \r
1286 HostAddr6 = Dns6TokenEntry->Token->RspData.H2AData->IpList;\r
1287 AnswerData = (UINT8 *) AnswerSection + sizeof (*AnswerSection);\r
1288 CopyMem (&HostAddr6[IpCount], AnswerData, sizeof (EFI_IPv6_ADDRESS));\r
1289\r
1290 //\r
1291 // Update DNS cache dynamically.\r
1292 //\r
1293 if (Dns6CacheEntry != NULL) {\r
1294 if (Dns6CacheEntry->HostName != NULL) {\r
1295 FreePool (Dns6CacheEntry->HostName);\r
1296 }\r
1297\r
1298 if (Dns6CacheEntry->IpAddress != NULL) {\r
1299 FreePool (Dns6CacheEntry->IpAddress);\r
1300 }\r
1301 \r
1302 FreePool (Dns6CacheEntry);\r
1303 }\r
1304\r
1305 // \r
1306 // Allocate new CacheEntry pool.\r
1307 //\r
1308 Dns6CacheEntry = AllocateZeroPool (sizeof (EFI_DNS6_CACHE_ENTRY));\r
1309 ASSERT (Dns6CacheEntry != NULL);\r
1310 Dns6CacheEntry->HostName = AllocateZeroPool (2 * (StrLen(Dns6TokenEntry->QueryHostName) + 1));\r
1311 ASSERT (Dns6CacheEntry->HostName != NULL);\r
1312 CopyMem (Dns6CacheEntry->HostName, Dns6TokenEntry->QueryHostName, 2 * (StrLen(Dns6TokenEntry->QueryHostName) + 1));\r
1313 Dns6CacheEntry->IpAddress = AllocateZeroPool (sizeof (EFI_IPv6_ADDRESS));\r
1314 ASSERT (Dns6CacheEntry->IpAddress != NULL);\r
1315 CopyMem (Dns6CacheEntry->IpAddress, AnswerData, sizeof (EFI_IPv6_ADDRESS));\r
1316 Dns6CacheEntry->Timeout = AnswerSection->Ttl;\r
1317 \r
1318 UpdateDns6Cache (&mDriverData->Dns6CacheList, FALSE, TRUE, *Dns6CacheEntry); \r
1319 \r
1320 IpCount ++;\r
1321 break;\r
1322 default:\r
1323 Status = EFI_UNSUPPORTED;\r
1324 goto ON_EXIT;\r
1325 }\r
1326 }\r
1327 \r
1328 //\r
1329 // Find next one\r
1330 //\r
1331 AnswerName = (CHAR8 *) AnswerSection + sizeof (*AnswerSection) + AnswerSection->DataLength;\r
1332 AnswerSectionNum ++;\r
1333 }\r
1334\r
1335 if (QuerySection->Type == DNS_TYPE_A) {\r
1336 Dns4TokenEntry->Token->RspData.H2AData->IpCount = IpCount;\r
1337 } else if (QuerySection->Type == DNS_TYPE_AAAA) {\r
1338 Dns6TokenEntry->Token->RspData.H2AData->IpCount = IpCount;\r
1339 }\r
1340\r
1341 //\r
1342 // Parsing is complete, SignalEvent here.\r
1343 //\r
1344 if (Instance->Service->IpVersion == IP_VERSION_4) {\r
1345 Dns4RemoveTokenEntry (&Instance->Dns4TxTokens, Dns4TokenEntry);\r
1346 Dns4TokenEntry->Token->Status = EFI_SUCCESS;\r
1347 if (Dns4TokenEntry->Token->Event != NULL) {\r
1348 gBS->SignalEvent (Dns4TokenEntry->Token->Event);\r
1349 DispatchDpc ();\r
1350 }\r
1351 } else {\r
1352 Dns6RemoveTokenEntry (&Instance->Dns6TxTokens, Dns6TokenEntry);\r
1353 Dns6TokenEntry->Token->Status = EFI_SUCCESS;\r
1354 if (Dns6TokenEntry->Token->Event != NULL) {\r
1355 gBS->SignalEvent (Dns6TokenEntry->Token->Event);\r
1356 DispatchDpc ();\r
1357 }\r
1358 }\r
1359\r
1360 // \r
1361 // Free allocated CacheEntry pool.\r
1362 //\r
1363 if (Dns4CacheEntry != NULL) {\r
1364 if (Dns4CacheEntry->HostName != NULL) {\r
1365 FreePool (Dns4CacheEntry->HostName);\r
1366 }\r
1367\r
1368 if (Dns4CacheEntry->IpAddress != NULL) {\r
1369 FreePool (Dns4CacheEntry->IpAddress);\r
1370 }\r
1371\r
1372 FreePool (Dns4CacheEntry);\r
1373 }\r
1374 \r
1375 if (Dns6CacheEntry != NULL) {\r
1376 if (Dns6CacheEntry->HostName != NULL) {\r
1377 FreePool (Dns6CacheEntry->HostName);\r
1378 }\r
1379\r
1380 if (Dns6CacheEntry->IpAddress != NULL) {\r
1381 FreePool (Dns6CacheEntry->IpAddress);\r
1382 }\r
1383 \r
1384 FreePool (Dns6CacheEntry);\r
1385 }\r
1386\r
1387ON_EXIT:\r
1388 gBS->RestoreTPL (OldTpl);\r
1389 return Status;\r
1390}\r
1391\r
1392/**\r
1393 Parse response packet.\r
1394\r
1395 @param Packet The packets received.\r
1396 @param EndPoint The local/remote UDP access point\r
1397 @param IoStatus The status of the UDP receive\r
1398 @param Context The opaque parameter to the function.\r
1399\r
1400**/ \r
1401VOID\r
1402EFIAPI\r
1403DnsOnPacketReceived (\r
1404 NET_BUF *Packet,\r
1405 UDP_END_POINT *EndPoint,\r
1406 EFI_STATUS IoStatus,\r
1407 VOID *Context\r
1408 )\r
1409{\r
1410 DNS_INSTANCE *Instance;\r
1411\r
1412 UINT8 *RcvString;\r
1413\r
1414 BOOLEAN Completed;\r
1415 \r
1416 Instance = (DNS_INSTANCE *) Context;\r
1417 NET_CHECK_SIGNATURE (Instance, DNS_INSTANCE_SIGNATURE);\r
1418\r
1419 RcvString = NULL;\r
1420 Completed = FALSE;\r
1421\r
1422 if (EFI_ERROR (IoStatus)) {\r
1423 goto ON_EXIT;\r
1424 }\r
1425\r
1426 ASSERT (Packet != NULL);\r
1427 \r
1428 RcvString = NetbufGetByte (Packet, 0, NULL);\r
1429\r
1430 //\r
1431 // Parse Dns Response\r
1432 //\r
1433 ParseDnsResponse (Instance, RcvString, &Completed);\r
1434\r
1435 ON_EXIT:\r
1436\r
1437 if (Packet != NULL) {\r
1438 NetbufFree (Packet);\r
1439 }\r
1440\r
1441 if (!Completed) {\r
1442 UdpIoRecvDatagram (Instance->UdpIo, DnsOnPacketReceived, Instance, 0);\r
1443 }\r
1444}\r
1445\r
1446/**\r
1447 Release the net buffer when packet is sent.\r
1448\r
1449 @param Packet The packets received.\r
1450 @param EndPoint The local/remote UDP access point\r
1451 @param IoStatus The status of the UDP receive\r
1452 @param Context The opaque parameter to the function.\r
1453\r
1454**/\r
1455VOID\r
1456EFIAPI\r
1457DnsOnPacketSent (\r
1458 NET_BUF *Packet,\r
1459 UDP_END_POINT *EndPoint,\r
1460 EFI_STATUS IoStatus,\r
1461 VOID *Context\r
1462 )\r
1463{\r
1464 DNS_INSTANCE *Instance;\r
1465 LIST_ENTRY *Entry;\r
1466 NET_MAP_ITEM *Item;\r
1467 DNS4_TOKEN_ENTRY *Dns4TokenEntry;\r
1468 DNS6_TOKEN_ENTRY *Dns6TokenEntry;\r
1469\r
1470 Dns4TokenEntry = NULL;\r
1471 Dns6TokenEntry = NULL;\r
1472\r
1473 Instance = (DNS_INSTANCE *) Context;\r
1474 NET_CHECK_SIGNATURE (Instance, DNS_INSTANCE_SIGNATURE);\r
1475\r
1476 if (Instance->Service->IpVersion == IP_VERSION_4) {\r
1477 NET_LIST_FOR_EACH (Entry, &Instance->Dns4TxTokens.Used) {\r
1478 Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r
1479 if (Packet == (NET_BUF *)(Item->Value)) {\r
1480 Dns4TokenEntry = ((DNS4_TOKEN_ENTRY *)Item->Key);\r
1481 Dns4TokenEntry->PacketToLive = Dns4TokenEntry->Token->RetryInterval;\r
1482 break;\r
1483 }\r
1484 }\r
1485 } else {\r
1486 NET_LIST_FOR_EACH (Entry, &Instance->Dns6TxTokens.Used) {\r
1487 Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r
1488 if (Packet == (NET_BUF *)(Item->Value)) {\r
1489 Dns6TokenEntry = ((DNS6_TOKEN_ENTRY *)Item->Key);\r
1490 Dns6TokenEntry->PacketToLive = Dns6TokenEntry->Token->RetryInterval;\r
1491 break;\r
1492 }\r
1493 }\r
1494 }\r
1495 \r
1496 NetbufFree (Packet);\r
1497}\r
1498\r
1499/**\r
1500 Query request information.\r
1501\r
1502 @param Instance The DNS instance\r
1503 @param Packet The packet for querying request information.\r
1504\r
1505 @retval EFI_SUCCESS Query request information successfully.\r
1506 @retval Others Failed to query request information.\r
1507\r
1508**/\r
1509EFI_STATUS\r
1510DoDnsQuery (\r
1511 IN DNS_INSTANCE *Instance,\r
1512 IN NET_BUF *Packet\r
1513 )\r
1514{\r
1515 EFI_STATUS Status;\r
1516\r
1517 //\r
1518 // Ready to receive the DNS response.\r
1519 //\r
1520 if (Instance->UdpIo->RecvRequest == NULL) {\r
1521 Status = UdpIoRecvDatagram (Instance->UdpIo, DnsOnPacketReceived, Instance, 0);\r
1522 if (EFI_ERROR (Status)) {\r
1523 return Status;\r
1524 }\r
1525 }\r
1526 \r
1527 //\r
1528 // Transmit the DNS packet.\r
1529 //\r
1530 NET_GET_REF (Packet);\r
1531\r
1532 Status = UdpIoSendDatagram (Instance->UdpIo, Packet, NULL, NULL, DnsOnPacketSent, Instance);\r
1533 \r
1534 return Status;\r
1535}\r
1536\r
1537/**\r
1538 Construct the Packet to query Ip.\r
1539\r
1540 @param Instance The DNS instance\r
1541 @param HostName Queried HostName \r
1542 @param Type DNS query Type\r
1543 @param Packet The packet for querying Ip\r
1544\r
1545 @retval EFI_SUCCESS The packet is constructed.\r
1546 @retval Others Failed to construct the Packet.\r
1547\r
1548**/\r
1549EFI_STATUS\r
1550ConstructDNSQueryIp (\r
1551 IN DNS_INSTANCE *Instance,\r
1552 IN CHAR16 *HostName,\r
1553 IN UINT16 Type,\r
1554 OUT NET_BUF **Packet\r
1555 )\r
1556{\r
1557 NET_FRAGMENT Frag;\r
1558 DNS_HEADER *DnsHeader;\r
1559 CHAR8 *QueryName;\r
1560 DNS_QUERY_SECTION *QuerySection;\r
1561 CHAR8 *Header;\r
1562 CHAR8 *Tail;\r
1563 UINTN Len;\r
1564 UINTN Index;\r
1565 \r
1566\r
1567 Frag.Bulk = AllocatePool (DNS_DEFAULT_BLKSIZE * sizeof (UINT8));\r
1568 if (Frag.Bulk == NULL) {\r
1569 return EFI_OUT_OF_RESOURCES;\r
1570 }\r
1571\r
1572 //\r
1573 // Fill header\r
1574 //\r
1575 DnsHeader = (DNS_HEADER *)Frag.Bulk; \r
1576 DnsHeader->Identification = (UINT16)AsmReadTsc ();\r
1577 DnsHeader->Flags.Uint16 = 0x0000;\r
1578 DnsHeader->Flags.Bits.RD = 1;\r
1579 DnsHeader->Flags.Bits.OpCode = DNS_FLAGS_OPCODE_STANDARD;\r
1580 DnsHeader->Flags.Bits.QR = DNS_FLAGS_QR_QUERY;\r
1581 DnsHeader->QuestionsNum = 1;\r
1582 DnsHeader->AnswersNum = 0;\r
1583 DnsHeader->AuthorityNum = 0;\r
1584 DnsHeader->AditionalNum = 0;\r
1585\r
1586 DnsHeader->Identification = HTONS(DnsHeader->Identification);\r
1587 DnsHeader->Flags.Uint16 = HTONS(DnsHeader->Flags.Uint16);\r
1588 DnsHeader->QuestionsNum = HTONS(DnsHeader->QuestionsNum);\r
1589 DnsHeader->AnswersNum = HTONS(DnsHeader->AnswersNum);\r
1590 DnsHeader->AuthorityNum = HTONS(DnsHeader->AuthorityNum);\r
1591 DnsHeader->AditionalNum = HTONS(DnsHeader->AditionalNum);\r
1592\r
1593 Frag.Len = sizeof (*DnsHeader);\r
1594\r
1595 //\r
1596 // Fill Query name\r
1597 //\r
1598 QueryName = (CHAR8 *) (Frag.Bulk + Frag.Len);\r
1599 Header = QueryName;\r
1600 Tail = Header + 1;\r
1601 Len = 0;\r
1602 for (Index = 0; HostName[Index] != 0; Index++) {\r
1603 *Tail = (CHAR8) HostName[Index];\r
1604 if (*Tail == '.') {\r
1605 *Header = (CHAR8) Len;\r
1606 Header = Tail;\r
1607 Tail ++;\r
1608 Len = 0;\r
1609 } else {\r
1610 Tail++;\r
1611 Len++;\r
1612 }\r
1613 }\r
1614 *Header = (CHAR8) Len;\r
1615 *Tail = 0;\r
1616 Frag.Len = (UINT32) (Frag.Len + StrLen (HostName) + 2); /// 1 for header, 1 for tail.\r
1617\r
1618 //\r
1619 // Rest query section\r
1620 //\r
1621 QuerySection = (DNS_QUERY_SECTION *) (Frag.Bulk + Frag.Len);\r
1622 QuerySection->Type = Type;\r
1623 QuerySection->Class = DNS_CLASS_INET;\r
1624\r
1625 QuerySection->Type = HTONS (QuerySection->Type);\r
1626 QuerySection->Class = HTONS (QuerySection->Class);\r
1627\r
1628 Frag.Len += sizeof (*QuerySection);\r
1629\r
1630 //\r
1631 // Wrap the Frag in a net buffer.\r
1632 //\r
1633 *Packet = NetbufFromExt (&Frag, 1, 0, 0, DnsDummyExtFree, NULL);\r
1634 if (*Packet == NULL) {\r
1635 FreePool (Frag.Bulk);\r
1636 return EFI_OUT_OF_RESOURCES;\r
1637 }\r
1638 \r
1639 //\r
1640 // Store the UdpIo in ProtoData.\r
1641 //\r
1642 *((UINTN *) &((*Packet)->ProtoData[0])) = (UINTN) (Instance->UdpIo);\r
1643\r
1644 return EFI_SUCCESS;\r
1645}\r
1646\r
1647/**\r
1648 Retransmit the packet.\r
1649\r
1650 @param Instance The DNS instance\r
1651 @param Packet Retransmit the packet \r
1652\r
1653 @retval EFI_SUCCESS The packet is retransmitted.\r
1654 @retval Others Failed to retransmit.\r
1655\r
1656**/\r
1657EFI_STATUS\r
1658DnsRetransmit (\r
1659 IN DNS_INSTANCE *Instance,\r
1660 IN NET_BUF *Packet\r
1661 )\r
1662{\r
1663 EFI_STATUS Status;\r
1664 \r
1665 UINT8 *Buffer;\r
1666\r
1667 ASSERT (Packet != NULL);\r
1668\r
1669 //\r
1670 // Set the requests to the listening port, other packets to the connected port\r
1671 //\r
1672 Buffer = NetbufGetByte (Packet, 0, NULL);\r
1673 ASSERT (Buffer != NULL);\r
1674\r
1675 NET_GET_REF (Packet);\r
1676\r
1677 Status = UdpIoSendDatagram (\r
1678 Instance->UdpIo,\r
1679 Packet,\r
1680 NULL,\r
1681 NULL,\r
1682 DnsOnPacketSent,\r
1683 Instance\r
1684 );\r
1685\r
1686 if (EFI_ERROR (Status)) {\r
1687 NET_PUT_REF (Packet);\r
1688 }\r
1689\r
1690 return Status;\r
1691}\r
1692\r
1693/**\r
1694 The timer ticking function for the DNS services.\r
1695\r
1696 @param Event The ticking event\r
1697 @param Context The DNS service instance\r
1698\r
1699**/\r
1700VOID\r
1701EFIAPI\r
1702DnsOnTimerRetransmit (\r
1703 IN EFI_EVENT Event,\r
1704 IN VOID *Context\r
1705 )\r
1706{\r
1707 DNS_SERVICE *Service;\r
1708\r
1709 LIST_ENTRY *Entry;\r
1710 LIST_ENTRY *Next;\r
1711\r
1712 DNS_INSTANCE *Instance;\r
1713 LIST_ENTRY *EntryNetMap;\r
1714 NET_MAP_ITEM *ItemNetMap;\r
1715 DNS4_TOKEN_ENTRY *Dns4TokenEntry;\r
1716 DNS6_TOKEN_ENTRY *Dns6TokenEntry;\r
1717\r
1718 Dns4TokenEntry = NULL;\r
1719 Dns6TokenEntry = NULL;\r
1720\r
1721 Service = (DNS_SERVICE *) Context;\r
1722\r
1723\r
1724 if (Service->IpVersion == IP_VERSION_4) {\r
1725 //\r
1726 // Iterate through all the children of the DNS service instance. Time\r
1727 // out the packet. If maximum retries reached, clean the Token up.\r
1728 //\r
1729 NET_LIST_FOR_EACH_SAFE (Entry, Next, &Service->Dns4ChildrenList) {\r
1730 Instance = NET_LIST_USER_STRUCT (Entry, DNS_INSTANCE, Link);\r
1731\r
1732 EntryNetMap = Instance->Dns4TxTokens.Used.ForwardLink;\r
1733 while (EntryNetMap != &Instance->Dns4TxTokens.Used) {\r
1734 ItemNetMap = NET_LIST_USER_STRUCT (EntryNetMap, NET_MAP_ITEM, Link);\r
1735 Dns4TokenEntry = (DNS4_TOKEN_ENTRY *)(ItemNetMap->Key);\r
1736 if (Dns4TokenEntry->PacketToLive == 0 || (--Dns4TokenEntry->PacketToLive > 0)) {\r
1737 EntryNetMap = EntryNetMap->ForwardLink;\r
1738 continue;\r
1739 }\r
1740\r
1741 //\r
1742 // Retransmit the packet if haven't reach the maxmium retry count,\r
1743 // otherwise exit the transfer.\r
1744 //\r
1745 if (++Dns4TokenEntry->Token->RetryCount < Instance->MaxRetry) {\r
1746 DnsRetransmit (Instance, (NET_BUF *)ItemNetMap->Value);\r
1747 EntryNetMap = EntryNetMap->ForwardLink;\r
1748 } else {\r
1749 //\r
1750 // Maximum retries reached, clean the Token up.\r
1751 //\r
1752 Dns4RemoveTokenEntry (&Instance->Dns4TxTokens, Dns4TokenEntry);\r
1753 Dns4TokenEntry->Token->Status = EFI_TIMEOUT;\r
1754 gBS->SignalEvent (Dns4TokenEntry->Token->Event);\r
1755 DispatchDpc ();\r
1756 \r
1757 //\r
1758 // Free the sending packet.\r
1759 //\r
1760 if (ItemNetMap->Value != NULL) {\r
1761 NetbufFree ((NET_BUF *)(ItemNetMap->Value));\r
1762 }\r
1763\r
1764 EntryNetMap = Instance->Dns4TxTokens.Used.ForwardLink;\r
1765 }\r
1766 }\r
1767 } \r
1768 }else {\r
1769 //\r
1770 // Iterate through all the children of the DNS service instance. Time\r
1771 // out the packet. If maximum retries reached, clean the Token up.\r
1772 //\r
1773 NET_LIST_FOR_EACH_SAFE (Entry, Next, &Service->Dns6ChildrenList) {\r
1774 Instance = NET_LIST_USER_STRUCT (Entry, DNS_INSTANCE, Link);\r
1775 \r
1776 EntryNetMap = Instance->Dns6TxTokens.Used.ForwardLink;\r
1777 while (EntryNetMap != &Instance->Dns6TxTokens.Used) {\r
1778 ItemNetMap = NET_LIST_USER_STRUCT (EntryNetMap, NET_MAP_ITEM, Link);\r
1779 Dns6TokenEntry = (DNS6_TOKEN_ENTRY *) (ItemNetMap->Key);\r
1780 if (Dns6TokenEntry->PacketToLive == 0 || (--Dns6TokenEntry->PacketToLive > 0)) {\r
1781 EntryNetMap = EntryNetMap->ForwardLink;\r
1782 continue;\r
1783 }\r
1784\r
1785 //\r
1786 // Retransmit the packet if haven't reach the maxmium retry count,\r
1787 // otherwise exit the transfer.\r
1788 //\r
1789 if (++Dns6TokenEntry->Token->RetryCount < Instance->MaxRetry) {\r
1790 DnsRetransmit (Instance, (NET_BUF *) ItemNetMap->Value);\r
1791 EntryNetMap = EntryNetMap->ForwardLink;\r
1792 } else {\r
1793 //\r
1794 // Maximum retries reached, clean the Token up.\r
1795 //\r
1796 Dns6RemoveTokenEntry (&Instance->Dns6TxTokens, Dns6TokenEntry);\r
1797 Dns6TokenEntry->Token->Status = EFI_TIMEOUT;\r
1798 gBS->SignalEvent (Dns6TokenEntry->Token->Event);\r
1799 DispatchDpc ();\r
1800 \r
1801 //\r
1802 // Free the sending packet.\r
1803 //\r
1804 if (ItemNetMap->Value != NULL) {\r
1805 NetbufFree ((NET_BUF *) (ItemNetMap->Value));\r
1806 }\r
1807\r
1808 EntryNetMap = Instance->Dns6TxTokens.Used.ForwardLink;\r
1809 } \r
1810 }\r
1811 }\r
1812 } \r
1813}\r
1814\r
1815/**\r
1816 The timer ticking function for the DNS driver.\r
1817\r
1818 @param Event The ticking event\r
1819 @param Context NULL\r
1820\r
1821**/\r
1822VOID\r
1823EFIAPI\r
1824DnsOnTimerUpdate (\r
1825 IN EFI_EVENT Event,\r
1826 IN VOID *Context\r
1827 )\r
1828{\r
1829 LIST_ENTRY *Entry;\r
1830 LIST_ENTRY *Next;\r
1831 DNS4_CACHE *Item4;\r
1832 DNS6_CACHE *Item6;\r
1833\r
1834 Item4 = NULL;\r
1835 Item6 = NULL;\r
1836\r
1837 //\r
1838 // Iterate through all the DNS4 cache list.\r
1839 //\r
1840 NET_LIST_FOR_EACH_SAFE (Entry, Next, &mDriverData->Dns4CacheList) {\r
1841 Item4 = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);\r
1842 Item4->DnsCache.Timeout--;\r
1843 }\r
1844 \r
1845 Entry = mDriverData->Dns4CacheList.ForwardLink;\r
1846 while (Entry != &mDriverData->Dns4CacheList) {\r
1847 Item4 = NET_LIST_USER_STRUCT (Entry, DNS4_CACHE, AllCacheLink);\r
1848 if (Item4->DnsCache.Timeout<=0) {\r
1849 RemoveEntryList (&Item4->AllCacheLink);\r
1850 Entry = mDriverData->Dns4CacheList.ForwardLink;\r
1851 } else {\r
1852 Entry = Entry->ForwardLink;\r
1853 }\r
1854 }\r
1855 \r
1856 //\r
1857 // Iterate through all the DNS6 cache list.\r
1858 //\r
1859 NET_LIST_FOR_EACH_SAFE (Entry, Next, &mDriverData->Dns6CacheList) {\r
1860 Item6 = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);\r
1861 Item6->DnsCache.Timeout--;\r
1862 }\r
1863 \r
1864 Entry = mDriverData->Dns6CacheList.ForwardLink;\r
1865 while (Entry != &mDriverData->Dns6CacheList) {\r
1866 Item6 = NET_LIST_USER_STRUCT (Entry, DNS6_CACHE, AllCacheLink);\r
1867 if (Item6->DnsCache.Timeout<=0) {\r
1868 RemoveEntryList (&Item6->AllCacheLink);\r
1869 Entry = mDriverData->Dns6CacheList.ForwardLink;\r
1870 } else {\r
1871 Entry = Entry->ForwardLink;\r
1872 }\r
1873 }\r
1874}\r
1875\r
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