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MdeModulePkg/Ip4Dxe: Ignore duplicated DNS address check
[mirror_edk2.git] / NetworkPkg / Ip6Dxe / Ip6ConfigImpl.c
1 /** @file
2 The implementation of EFI IPv6 Configuration Protocol.
3
4 Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
5
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php.
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16 #include "Ip6Impl.h"
17
18 LIST_ENTRY mIp6ConfigInstanceList = {&mIp6ConfigInstanceList, &mIp6ConfigInstanceList};
19
20 /**
21 The event process routine when the DHCPv6 service binding protocol is installed
22 in the system.
23
24 @param[in] Event Not used.
25 @param[in] Context Pointer to the IP6 config instance data.
26
27 **/
28 VOID
29 EFIAPI
30 Ip6ConfigOnDhcp6SbInstalled (
31 IN EFI_EVENT Event,
32 IN VOID *Context
33 );
34
35 /**
36 Update the current policy to NewPolicy. During the transition
37 period, the default router list, on-link prefix list, autonomous prefix list
38 and address list in all interfaces will be released.
39
40 @param[in] IpSb The IP6 service binding instance.
41 @param[in] NewPolicy The new policy to be updated to.
42
43 **/
44 VOID
45 Ip6ConfigOnPolicyChanged (
46 IN IP6_SERVICE *IpSb,
47 IN EFI_IP6_CONFIG_POLICY NewPolicy
48 )
49 {
50 LIST_ENTRY *Entry;
51 LIST_ENTRY *Entry2;
52 LIST_ENTRY *Next;
53 IP6_INTERFACE *IpIf;
54 IP6_DAD_ENTRY *DadEntry;
55 IP6_DELAY_JOIN_LIST *DelayNode;
56
57 //
58 // Currently there are only two policies: Manual and Automatic. Regardless of
59 // what transition is going on, i.e., Manual -> Automatic and Automatic ->
60 // Manual, we have to free default router list, on-link prefix list, autonomous
61 // prefix list, address list in all the interfaces and destroy any IPv6 child
62 // instance whose local IP is neither 0 nor the link-local address.
63 //
64 Ip6CleanDefaultRouterList (IpSb);
65 Ip6CleanPrefixListTable (IpSb, &IpSb->OnlinkPrefix);
66 Ip6CleanPrefixListTable (IpSb, &IpSb->AutonomousPrefix);
67
68 //
69 // It's tricky... If the LinkLocal address is O.K., add back the link-local
70 // prefix to the on-link prefix table.
71 //
72 if (IpSb->LinkLocalOk) {
73 Ip6CreatePrefixListEntry (
74 IpSb,
75 TRUE,
76 (UINT32) IP6_INFINIT_LIFETIME,
77 (UINT32) IP6_INFINIT_LIFETIME,
78 IP6_LINK_LOCAL_PREFIX_LENGTH,
79 &IpSb->LinkLocalAddr
80 );
81 }
82
83 //
84 // All IPv6 children that use global unicast address as it's source address
85 // should be destryoed now. The survivers are those use the link-local address
86 // or the unspecified address as the source address.
87 // TODO: Conduct a check here.
88 Ip6RemoveAddr (
89 IpSb,
90 &IpSb->DefaultInterface->AddressList,
91 &IpSb->DefaultInterface->AddressCount,
92 NULL,
93 0
94 );
95
96 NET_LIST_FOR_EACH (Entry, &IpSb->Interfaces) {
97 //
98 // remove all pending delay node and DAD entries for the global addresses.
99 //
100 IpIf = NET_LIST_USER_STRUCT_S (Entry, IP6_INTERFACE, Link, IP6_INTERFACE_SIGNATURE);
101
102 NET_LIST_FOR_EACH_SAFE (Entry2, Next, &IpIf->DelayJoinList) {
103 DelayNode = NET_LIST_USER_STRUCT (Entry2, IP6_DELAY_JOIN_LIST, Link);
104 if (!NetIp6IsLinkLocalAddr (&DelayNode->AddressInfo->Address)) {
105 RemoveEntryList (&DelayNode->Link);
106 FreePool (DelayNode);
107 }
108 }
109
110 NET_LIST_FOR_EACH_SAFE (Entry2, Next, &IpIf->DupAddrDetectList) {
111 DadEntry = NET_LIST_USER_STRUCT_S (Entry2, IP6_DAD_ENTRY, Link, IP6_DAD_ENTRY_SIGNATURE);
112
113 if (!NetIp6IsLinkLocalAddr (&DadEntry->AddressInfo->Address)) {
114 //
115 // Fail this DAD entry if the address is not link-local.
116 //
117 Ip6OnDADFinished (FALSE, IpIf, DadEntry);
118 }
119 }
120 }
121
122 if (NewPolicy == Ip6ConfigPolicyAutomatic) {
123 //
124 // Set parameters to trigger router solicitation sending in timer handler.
125 //
126 IpSb->RouterAdvertiseReceived = FALSE;
127 IpSb->SolicitTimer = IP6_MAX_RTR_SOLICITATIONS;
128 //
129 // delay 1 second
130 //
131 IpSb->Ticks = (UINT32) IP6_GET_TICKS (IP6_ONE_SECOND_IN_MS);
132 }
133
134 }
135
136 /**
137 The work function to trigger the DHCPv6 process to perform a stateful autoconfiguration.
138
139 @param[in] Instance Pointer to the IP6 config instance data.
140 @param[in] OtherInfoOnly If FALSE, get stateful address and other information
141 via DHCPv6. Otherwise, only get the other information.
142
143 @retval EFI_SUCCESS The operation finished successfully.
144 @retval EFI_UNSUPPORTED The DHCP6 driver is not available.
145
146 **/
147 EFI_STATUS
148 Ip6ConfigStartStatefulAutoConfig (
149 IN IP6_CONFIG_INSTANCE *Instance,
150 IN BOOLEAN OtherInfoOnly
151 )
152 {
153 EFI_STATUS Status;
154 IP6_SERVICE *IpSb;
155 EFI_DHCP6_CONFIG_DATA Dhcp6CfgData;
156 EFI_DHCP6_PROTOCOL *Dhcp6;
157 EFI_DHCP6_PACKET_OPTION *OptList[1];
158 UINT16 OptBuf[4];
159 EFI_DHCP6_PACKET_OPTION *Oro;
160 EFI_DHCP6_RETRANSMISSION InfoReqReXmit;
161
162 //
163 // A host must not invoke stateful address configuration if it is already
164 // participating in the statuful protocol as a result of an earlier advertisement.
165 //
166 if (Instance->Dhcp6Handle != NULL) {
167 return EFI_SUCCESS;
168 }
169
170 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
171
172 Instance->OtherInfoOnly = OtherInfoOnly;
173
174 Status = NetLibCreateServiceChild (
175 IpSb->Controller,
176 IpSb->Image,
177 &gEfiDhcp6ServiceBindingProtocolGuid,
178 &Instance->Dhcp6Handle
179 );
180
181 if (Status == EFI_UNSUPPORTED) {
182 //
183 // No DHCPv6 Service Binding protocol, register a notify.
184 //
185 if (Instance->Dhcp6SbNotifyEvent == NULL) {
186 Instance->Dhcp6SbNotifyEvent = EfiCreateProtocolNotifyEvent (
187 &gEfiDhcp6ServiceBindingProtocolGuid,
188 TPL_CALLBACK,
189 Ip6ConfigOnDhcp6SbInstalled,
190 (VOID *) Instance,
191 &Instance->Registration
192 );
193 }
194 }
195
196 if (EFI_ERROR (Status)) {
197 return Status;
198 }
199
200 if (Instance->Dhcp6SbNotifyEvent != NULL) {
201 gBS->CloseEvent (Instance->Dhcp6SbNotifyEvent);
202 }
203
204 Status = gBS->OpenProtocol (
205 Instance->Dhcp6Handle,
206 &gEfiDhcp6ProtocolGuid,
207 (VOID **) &Instance->Dhcp6,
208 IpSb->Image,
209 IpSb->Controller,
210 EFI_OPEN_PROTOCOL_BY_DRIVER
211 );
212 ASSERT_EFI_ERROR (Status);
213
214 Dhcp6 = Instance->Dhcp6;
215 Dhcp6->Configure (Dhcp6, NULL);
216
217 //
218 // Set the exta options to send. Here we only want the option request option
219 // with DNS SERVERS.
220 //
221 Oro = (EFI_DHCP6_PACKET_OPTION *) OptBuf;
222 Oro->OpCode = HTONS (DHCP6_OPT_ORO);
223 Oro->OpLen = HTONS (2);
224 *((UINT16 *) &Oro->Data[0]) = HTONS (DHCP6_OPT_DNS_SERVERS);
225 OptList[0] = Oro;
226
227 Status = EFI_SUCCESS;
228
229 if (!OtherInfoOnly) {
230 //
231 // Get stateful address and other information via DHCPv6.
232 //
233 Dhcp6CfgData.Dhcp6Callback = NULL;
234 Dhcp6CfgData.CallbackContext = NULL;
235 Dhcp6CfgData.OptionCount = 1;
236 Dhcp6CfgData.OptionList = &OptList[0];
237 Dhcp6CfgData.IaDescriptor.Type = EFI_DHCP6_IA_TYPE_NA;
238 Dhcp6CfgData.IaDescriptor.IaId = Instance->IaId;
239 Dhcp6CfgData.IaInfoEvent = Instance->Dhcp6Event;
240 Dhcp6CfgData.ReconfigureAccept = FALSE;
241 Dhcp6CfgData.RapidCommit = FALSE;
242 Dhcp6CfgData.SolicitRetransmission = NULL;
243
244 Status = Dhcp6->Configure (Dhcp6, &Dhcp6CfgData);
245
246 if (!EFI_ERROR (Status)) {
247
248 if (IpSb->LinkLocalOk) {
249 Status = Dhcp6->Start (Dhcp6);
250 } else {
251 IpSb->Dhcp6NeedStart = TRUE;
252 }
253
254 }
255 } else {
256 //
257 // Only get other information via DHCPv6, this doesn't require a config
258 // action.
259 //
260 InfoReqReXmit.Irt = 4;
261 InfoReqReXmit.Mrc = 64;
262 InfoReqReXmit.Mrt = 60;
263 InfoReqReXmit.Mrd = 0;
264
265 if (IpSb->LinkLocalOk) {
266 Status = Dhcp6->InfoRequest (
267 Dhcp6,
268 TRUE,
269 Oro,
270 0,
271 NULL,
272 &InfoReqReXmit,
273 Instance->Dhcp6Event,
274 Ip6ConfigOnDhcp6Reply,
275 Instance
276 );
277 } else {
278 IpSb->Dhcp6NeedInfoRequest = TRUE;
279 }
280
281 }
282
283 return Status;
284 }
285
286 /**
287 Signal the registered event. It is the callback routine for NetMapIterate.
288
289 @param[in] Map Points to the list of registered event.
290 @param[in] Item The registered event.
291 @param[in] Arg Not used.
292
293 **/
294 EFI_STATUS
295 EFIAPI
296 Ip6ConfigSignalEvent (
297 IN NET_MAP *Map,
298 IN NET_MAP_ITEM *Item,
299 IN VOID *Arg
300 )
301 {
302 gBS->SignalEvent ((EFI_EVENT) Item->Key);
303
304 return EFI_SUCCESS;
305 }
306
307 /**
308 Read the configuration data from variable storage according to the VarName and
309 gEfiIp6ConfigProtocolGuid. It checks the integrity of variable data. If the
310 data is corrupted, it clears the variable data to ZERO. Othewise, it outputs the
311 configuration data to IP6_CONFIG_INSTANCE.
312
313 @param[in] VarName The pointer to the variable name
314 @param[in, out] Instance The pointer to the IP6 config instance data.
315
316 @retval EFI_NOT_FOUND The variable can not be found or already corrupted.
317 @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
318 @retval EFI_SUCCESS The configuration data was retrieved successfully.
319
320 **/
321 EFI_STATUS
322 Ip6ConfigReadConfigData (
323 IN CHAR16 *VarName,
324 IN OUT IP6_CONFIG_INSTANCE *Instance
325 )
326 {
327 EFI_STATUS Status;
328 UINTN VarSize;
329 IP6_CONFIG_VARIABLE *Variable;
330 IP6_CONFIG_DATA_ITEM *DataItem;
331 UINTN Index;
332 IP6_CONFIG_DATA_RECORD DataRecord;
333 CHAR8 *Data;
334
335 //
336 // Try to read the configuration variable.
337 //
338 VarSize = 0;
339 Status = gRT->GetVariable (
340 VarName,
341 &gEfiIp6ConfigProtocolGuid,
342 NULL,
343 &VarSize,
344 NULL
345 );
346
347 if (Status == EFI_BUFFER_TOO_SMALL) {
348 //
349 // Allocate buffer and read the config variable.
350 //
351 Variable = AllocatePool (VarSize);
352 if (Variable == NULL) {
353 return EFI_OUT_OF_RESOURCES;
354 }
355
356 Status = gRT->GetVariable (
357 VarName,
358 &gEfiIp6ConfigProtocolGuid,
359 NULL,
360 &VarSize,
361 Variable
362 );
363 if (EFI_ERROR (Status) || (UINT16) (~NetblockChecksum ((UINT8 *) Variable, (UINT32) VarSize)) != 0) {
364 //
365 // GetVariable still error or the variable is corrupted.
366 // Fall back to the default value.
367 //
368 FreePool (Variable);
369
370 //
371 // Remove the problematic variable and return EFI_NOT_FOUND, a new
372 // variable will be set again.
373 //
374 gRT->SetVariable (
375 VarName,
376 &gEfiIp6ConfigProtocolGuid,
377 IP6_CONFIG_VARIABLE_ATTRIBUTE,
378 0,
379 NULL
380 );
381
382 return EFI_NOT_FOUND;
383 }
384
385 //
386 // Get the IAID we use.
387 //
388 Instance->IaId = Variable->IaId;
389
390 for (Index = 0; Index < Variable->DataRecordCount; Index++) {
391
392 CopyMem (&DataRecord, &Variable->DataRecord[Index], sizeof (DataRecord));
393
394 DataItem = &Instance->DataItem[DataRecord.DataType];
395 if (DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED) &&
396 (DataItem->DataSize != DataRecord.DataSize)
397 ) {
398 //
399 // Perhaps a corrupted data record...
400 //
401 continue;
402 }
403
404 if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED)) {
405 //
406 // This data item has variable length data.
407 //
408 DataItem->Data.Ptr = AllocatePool (DataRecord.DataSize);
409 if (DataItem->Data.Ptr == NULL) {
410 //
411 // no memory resource
412 //
413 continue;
414 }
415 }
416
417 Data = (CHAR8 *) Variable + DataRecord.Offset;
418 CopyMem (DataItem->Data.Ptr, Data, DataRecord.DataSize);
419
420 DataItem->DataSize = DataRecord.DataSize;
421 DataItem->Status = EFI_SUCCESS;
422 }
423
424 FreePool (Variable);
425 return EFI_SUCCESS;
426 }
427
428 return Status;
429 }
430
431 /**
432 Write the configuration data from IP6_CONFIG_INSTANCE to variable storage.
433
434 @param[in] VarName The pointer to the variable name.
435 @param[in] Instance The pointer to the IP6 configuration instance data.
436
437 @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
438 @retval EFI_SUCCESS The configuration data is written successfully.
439
440 **/
441 EFI_STATUS
442 Ip6ConfigWriteConfigData (
443 IN CHAR16 *VarName,
444 IN IP6_CONFIG_INSTANCE *Instance
445 )
446 {
447 UINTN Index;
448 UINTN VarSize;
449 IP6_CONFIG_DATA_ITEM *DataItem;
450 IP6_CONFIG_VARIABLE *Variable;
451 IP6_CONFIG_DATA_RECORD *DataRecord;
452 CHAR8 *Heap;
453 EFI_STATUS Status;
454
455 VarSize = sizeof (IP6_CONFIG_VARIABLE) - sizeof (IP6_CONFIG_DATA_RECORD);
456
457 for (Index = 0; Index < Ip6ConfigDataTypeMaximum; Index++) {
458
459 DataItem = &Instance->DataItem[Index];
460 if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_VOLATILE) && !EFI_ERROR (DataItem->Status)) {
461
462 VarSize += sizeof (IP6_CONFIG_DATA_RECORD) + DataItem->DataSize;
463 }
464 }
465
466 Variable = AllocatePool (VarSize);
467 if (Variable == NULL) {
468 return EFI_OUT_OF_RESOURCES;
469 }
470
471 Variable->IaId = Instance->IaId;
472 Heap = (CHAR8 *) Variable + VarSize;
473 Variable->DataRecordCount = 0;
474
475 for (Index = 0; Index < Ip6ConfigDataTypeMaximum; Index++) {
476
477 DataItem = &Instance->DataItem[Index];
478 if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_VOLATILE) && !EFI_ERROR (DataItem->Status)) {
479
480 Heap -= DataItem->DataSize;
481 CopyMem (Heap, DataItem->Data.Ptr, DataItem->DataSize);
482
483 DataRecord = &Variable->DataRecord[Variable->DataRecordCount];
484 DataRecord->DataType = (EFI_IP6_CONFIG_DATA_TYPE) Index;
485 DataRecord->DataSize = (UINT32) DataItem->DataSize;
486 DataRecord->Offset = (UINT16) (Heap - (CHAR8 *) Variable);
487
488 Variable->DataRecordCount++;
489 }
490 }
491
492 Variable->Checksum = 0;
493 Variable->Checksum = (UINT16) ~NetblockChecksum ((UINT8 *) Variable, (UINT32) VarSize);
494
495 Status = gRT->SetVariable (
496 VarName,
497 &gEfiIp6ConfigProtocolGuid,
498 IP6_CONFIG_VARIABLE_ATTRIBUTE,
499 VarSize,
500 Variable
501 );
502
503 FreePool (Variable);
504
505 return Status;
506 }
507
508 /**
509 The work function for EfiIp6ConfigGetData() to get the interface information
510 of the communication device this IP6Config instance manages.
511
512 @param[in] Instance Pointer to the IP6 config instance data.
513 @param[in, out] DataSize On input, in bytes, the size of Data. On output, in
514 bytes, the size of buffer required to store the specified
515 configuration data.
516 @param[in] Data The data buffer in which the configuration data is returned.
517 Ignored if DataSize is ZERO.
518
519 @retval EFI_BUFFER_TOO_SMALL The size of Data is too small for the specified
520 configuration data, and the required size is
521 returned in DataSize.
522 @retval EFI_SUCCESS The specified configuration data was obtained.
523
524 **/
525 EFI_STATUS
526 Ip6ConfigGetIfInfo (
527 IN IP6_CONFIG_INSTANCE *Instance,
528 IN OUT UINTN *DataSize,
529 IN VOID *Data OPTIONAL
530 )
531 {
532 IP6_SERVICE *IpSb;
533 UINTN Length;
534 IP6_CONFIG_DATA_ITEM *Item;
535 EFI_IP6_CONFIG_INTERFACE_INFO *IfInfo;
536 UINT32 AddressCount;
537 UINT32 RouteCount;
538
539 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
540 Length = sizeof (EFI_IP6_CONFIG_INTERFACE_INFO);
541
542 //
543 // Calculate the required length, add the buffer size for AddressInfo and
544 // RouteTable
545 //
546 Ip6BuildEfiAddressList (IpSb, &AddressCount, NULL);
547 Ip6BuildEfiRouteTable (IpSb->RouteTable, &RouteCount, NULL);
548
549 Length += AddressCount * sizeof (EFI_IP6_ADDRESS_INFO) + RouteCount * sizeof (EFI_IP6_ROUTE_TABLE);
550
551 if (*DataSize < Length) {
552 *DataSize = Length;
553 return EFI_BUFFER_TOO_SMALL;
554 }
555
556 //
557 // Copy the fixed size part of the interface info.
558 //
559 Item = &Instance->DataItem[Ip6ConfigDataTypeInterfaceInfo];
560 IfInfo = (EFI_IP6_CONFIG_INTERFACE_INFO *) Data;
561 CopyMem (IfInfo, Item->Data.Ptr, sizeof (EFI_IP6_CONFIG_INTERFACE_INFO));
562
563 //
564 // AddressInfo
565 //
566 IfInfo->AddressInfo = (EFI_IP6_ADDRESS_INFO *) (IfInfo + 1);
567 Ip6BuildEfiAddressList (IpSb, &IfInfo->AddressInfoCount, &IfInfo->AddressInfo);
568
569 //
570 // RouteTable
571 //
572 IfInfo->RouteTable = (EFI_IP6_ROUTE_TABLE *) (IfInfo->AddressInfo + IfInfo->AddressInfoCount);
573 Ip6BuildEfiRouteTable (IpSb->RouteTable, &IfInfo->RouteCount, &IfInfo->RouteTable);
574
575 if (IfInfo->AddressInfoCount == 0) {
576 IfInfo->AddressInfo = NULL;
577 }
578
579 if (IfInfo->RouteCount == 0) {
580 IfInfo->RouteTable = NULL;
581 }
582
583 return EFI_SUCCESS;
584 }
585
586 /**
587 The work function for EfiIp6ConfigSetData() to set the alternative inteface ID
588 for the communication device managed by this IP6Config instance, if the link local
589 IPv6 addresses generated from the interface ID based on the default source the
590 EFI IPv6 Protocol uses is a duplicate address.
591
592 @param[in] Instance Pointer to the IP6 configuration instance data.
593 @param[in] DataSize Size of the buffer pointed to by Data in bytes.
594 @param[in] Data The data buffer to set.
595
596 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type,
597 8 bytes.
598 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
599 network stack was set.
600
601 **/
602 EFI_STATUS
603 Ip6ConfigSetAltIfId (
604 IN IP6_CONFIG_INSTANCE *Instance,
605 IN UINTN DataSize,
606 IN VOID *Data
607 )
608 {
609 EFI_IP6_CONFIG_INTERFACE_ID *OldIfId;
610 EFI_IP6_CONFIG_INTERFACE_ID *NewIfId;
611 IP6_CONFIG_DATA_ITEM *DataItem;
612
613 if (DataSize != sizeof (EFI_IP6_CONFIG_INTERFACE_ID)) {
614 return EFI_BAD_BUFFER_SIZE;
615 }
616
617 DataItem = &Instance->DataItem[Ip6ConfigDataTypeAltInterfaceId];
618 OldIfId = DataItem->Data.AltIfId;
619 NewIfId = (EFI_IP6_CONFIG_INTERFACE_ID *) Data;
620
621 CopyMem (OldIfId, NewIfId, DataSize);
622 DataItem->Status = EFI_SUCCESS;
623
624 return EFI_SUCCESS;
625 }
626
627 /**
628 The work function for EfiIp6ConfigSetData() to set the general configuration
629 policy for the EFI IPv6 network stack that is running on the communication device
630 managed by this IP6Config instance. The policy will affect other configuration settings.
631
632 @param[in] Instance Pointer to the IP6 config instance data.
633 @param[in] DataSize Size of the buffer pointed to by Data in bytes.
634 @param[in] Data The data buffer to set.
635
636 @retval EFI_INVALID_PARAMETER The to be set policy is invalid.
637 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
638 @retval EFI_ABORTED The new policy equals the current policy.
639 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
640 network stack was set.
641
642 **/
643 EFI_STATUS
644 Ip6ConfigSetPolicy (
645 IN IP6_CONFIG_INSTANCE *Instance,
646 IN UINTN DataSize,
647 IN VOID *Data
648 )
649 {
650 EFI_IP6_CONFIG_POLICY NewPolicy;
651 IP6_CONFIG_DATA_ITEM *DataItem;
652 IP6_SERVICE *IpSb;
653
654 if (DataSize != sizeof (EFI_IP6_CONFIG_POLICY)) {
655 return EFI_BAD_BUFFER_SIZE;
656 }
657
658 NewPolicy = *((EFI_IP6_CONFIG_POLICY *) Data);
659
660 if (NewPolicy > Ip6ConfigPolicyAutomatic) {
661 return EFI_INVALID_PARAMETER;
662 }
663
664 if (NewPolicy == Instance->Policy) {
665
666 return EFI_ABORTED;
667 } else {
668 //
669 // Clean the ManualAddress, Gateway and DnsServers, shrink the variable
670 // data size, and fire up all the related events.
671 //
672 DataItem = &Instance->DataItem[Ip6ConfigDataTypeManualAddress];
673 if (DataItem->Data.Ptr != NULL) {
674 FreePool (DataItem->Data.Ptr);
675 }
676 DataItem->Data.Ptr = NULL;
677 DataItem->DataSize = 0;
678 DataItem->Status = EFI_NOT_FOUND;
679 NetMapIterate (&DataItem->EventMap, Ip6ConfigSignalEvent, NULL);
680
681 DataItem = &Instance->DataItem[Ip6ConfigDataTypeGateway];
682 if (DataItem->Data.Ptr != NULL) {
683 FreePool (DataItem->Data.Ptr);
684 }
685 DataItem->Data.Ptr = NULL;
686 DataItem->DataSize = 0;
687 DataItem->Status = EFI_NOT_FOUND;
688 NetMapIterate (&DataItem->EventMap, Ip6ConfigSignalEvent, NULL);
689
690 DataItem = &Instance->DataItem[Ip6ConfigDataTypeDnsServer];
691 DataItem->Data.Ptr = NULL;
692 DataItem->DataSize = 0;
693 DataItem->Status = EFI_NOT_FOUND;
694 NetMapIterate (&DataItem->EventMap, Ip6ConfigSignalEvent, NULL);
695
696 if (NewPolicy == Ip6ConfigPolicyManual) {
697 //
698 // The policy is changed from automatic to manual. Stop the DHCPv6 process
699 // and destroy the DHCPv6 child.
700 //
701 if (Instance->Dhcp6Handle != NULL) {
702 Ip6ConfigDestroyDhcp6 (Instance);
703 }
704 }
705
706 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
707 Ip6ConfigOnPolicyChanged (IpSb, NewPolicy);
708
709 Instance->Policy = NewPolicy;
710
711 return EFI_SUCCESS;
712 }
713 }
714
715 /**
716 The work function for EfiIp6ConfigSetData() to set the number of consecutive
717 Neighbor Solicitation messages sent while performing Duplicate Address Detection
718 on a tentative address. A value of ZERO indicates that Duplicate Address Detection
719 will not be performed on a tentative address.
720
721 @param[in] Instance The Instance Pointer to the IP6 config instance data.
722 @param[in] DataSize Size of the buffer pointed to by Data in bytes.
723 @param[in] Data The data buffer to set.
724
725 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
726 @retval EFI_ABORTED The new transmit count equals the current configuration.
727 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
728 network stack was set.
729
730 **/
731 EFI_STATUS
732 Ip6ConfigSetDadXmits (
733 IN IP6_CONFIG_INSTANCE *Instance,
734 IN UINTN DataSize,
735 IN VOID *Data
736 )
737 {
738 EFI_IP6_CONFIG_DUP_ADDR_DETECT_TRANSMITS *OldDadXmits;
739
740 if (DataSize != sizeof (EFI_IP6_CONFIG_DUP_ADDR_DETECT_TRANSMITS)) {
741 return EFI_BAD_BUFFER_SIZE;
742 }
743
744 OldDadXmits = Instance->DataItem[Ip6ConfigDataTypeDupAddrDetectTransmits].Data.DadXmits;
745
746 if ((*(UINT32 *) Data) == OldDadXmits->DupAddrDetectTransmits) {
747
748 return EFI_ABORTED;
749 } else {
750
751 OldDadXmits->DupAddrDetectTransmits = *((UINT32 *) Data);
752 return EFI_SUCCESS;
753 }
754 }
755
756 /**
757 The callback function for Ip6SetAddr. The prototype is defined
758 as IP6_DAD_CALLBACK. It is called after Duplicate Address Detection is performed
759 for the manual address set by Ip6ConfigSetMaunualAddress.
760
761 @param[in] IsDadPassed If TRUE, Duplicate Address Detection passed.
762 @param[in] TargetAddress The tentative IPv6 address to be checked.
763 @param[in] Context Pointer to the IP6 configuration instance data.
764
765 **/
766 VOID
767 Ip6ManualAddrDadCallback (
768 IN BOOLEAN IsDadPassed,
769 IN EFI_IPv6_ADDRESS *TargetAddress,
770 IN VOID *Context
771 )
772 {
773 IP6_CONFIG_INSTANCE *Instance;
774 UINTN Index;
775 IP6_CONFIG_DATA_ITEM *Item;
776 EFI_IP6_CONFIG_MANUAL_ADDRESS *ManualAddr;
777 EFI_IP6_CONFIG_MANUAL_ADDRESS *PassedAddr;
778 UINTN DadPassCount;
779 UINTN DadFailCount;
780 IP6_SERVICE *IpSb;
781
782 Instance = (IP6_CONFIG_INSTANCE *) Context;
783 NET_CHECK_SIGNATURE (Instance, IP6_CONFIG_INSTANCE_SIGNATURE);
784 Item = &Instance->DataItem[Ip6ConfigDataTypeManualAddress];
785 ManualAddr = NULL;
786
787 for (Index = 0; Index < Item->DataSize / sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS); Index++) {
788 //
789 // Find the original tag used to place into the NET_MAP.
790 //
791 ManualAddr = Item->Data.ManualAddress + Index;
792 if (EFI_IP6_EQUAL (TargetAddress, &ManualAddr->Address)) {
793 break;
794 }
795 }
796
797 ASSERT (Index != Item->DataSize / sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS));
798
799 if (IsDadPassed) {
800 NetMapInsertTail (&Instance->DadPassedMap, ManualAddr, NULL);
801 } else {
802 NetMapInsertTail (&Instance->DadFailedMap, ManualAddr, NULL);
803 }
804
805 DadPassCount = NetMapGetCount (&Instance->DadPassedMap);
806 DadFailCount = NetMapGetCount (&Instance->DadFailedMap);
807
808 if ((DadPassCount + DadFailCount) == (Item->DataSize / sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS))) {
809 //
810 // All addresses have finished the configuration process.
811 //
812 if (DadFailCount != 0) {
813 //
814 // There is at least one duplicate address.
815 //
816 FreePool (Item->Data.Ptr);
817
818 Item->DataSize = DadPassCount * sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS);
819 if (Item->DataSize == 0) {
820 //
821 // All failed, bad luck.
822 //
823 Item->Data.Ptr = NULL;
824 Item->Status = EFI_NOT_FOUND;
825 } else {
826 //
827 // Part of addresses are detected to be duplicates, so update the
828 // data with those passed.
829 //
830 PassedAddr = (EFI_IP6_CONFIG_MANUAL_ADDRESS *) AllocatePool (Item->DataSize);
831 ASSERT (PassedAddr != NULL);
832
833 Item->Data.Ptr = PassedAddr;
834 Item->Status = EFI_SUCCESS;
835
836 while (!NetMapIsEmpty (&Instance->DadPassedMap)) {
837 ManualAddr = (EFI_IP6_CONFIG_MANUAL_ADDRESS *) NetMapRemoveHead (&Instance->DadPassedMap, NULL);
838 CopyMem (PassedAddr, ManualAddr, sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS));
839
840 PassedAddr++;
841 }
842
843 ASSERT ((UINTN) PassedAddr - (UINTN) Item->Data.Ptr == Item->DataSize);
844 }
845 } else {
846 //
847 // All addresses are valid.
848 //
849 Item->Status = EFI_SUCCESS;
850 }
851
852 //
853 // Remove the tags we put in the NET_MAPs.
854 //
855 while (!NetMapIsEmpty (&Instance->DadFailedMap)) {
856 NetMapRemoveHead (&Instance->DadFailedMap, NULL);
857 }
858
859 while (!NetMapIsEmpty (&Instance->DadPassedMap)) {
860 NetMapRemoveHead (&Instance->DadPassedMap, NULL);
861 }
862
863 //
864 // Signal the waiting events.
865 //
866 NetMapIterate (&Item->EventMap, Ip6ConfigSignalEvent, NULL);
867 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
868 Ip6ConfigWriteConfigData (IpSb->MacString, Instance);
869 }
870 }
871
872 /**
873 The work function for EfiIp6ConfigSetData() to set the station addresses manually
874 for the EFI IPv6 network stack. It is only configurable when the policy is
875 Ip6ConfigPolicyManual.
876
877 @param[in] Instance Pointer to the IP6 configuration instance data.
878 @param[in] DataSize Size of the buffer pointed to by Data in bytes.
879 @param[in] Data The data buffer to set.
880
881 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
882 @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
883 under the current policy.
884 @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
885 @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
886 @retval EFI_NOT_READY An asynchrous process is invoked to set the specified
887 configuration data, and the process is not finished.
888 @retval EFI_ABORTED The manual addresses to be set equal current
889 configuration.
890 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
891 network stack was set.
892
893 **/
894 EFI_STATUS
895 Ip6ConfigSetMaunualAddress (
896 IN IP6_CONFIG_INSTANCE *Instance,
897 IN UINTN DataSize,
898 IN VOID *Data
899 )
900 {
901 EFI_IP6_CONFIG_MANUAL_ADDRESS *NewAddress;
902 EFI_IP6_CONFIG_MANUAL_ADDRESS *TmpAddress;
903 IP6_CONFIG_DATA_ITEM *DataItem;
904 UINTN NewAddressCount;
905 UINTN Index1;
906 UINTN Index2;
907 IP6_SERVICE *IpSb;
908 IP6_ADDRESS_INFO *CurrentAddrInfo;
909 IP6_ADDRESS_INFO *Copy;
910 LIST_ENTRY CurrentSourceList;
911 UINT32 CurrentSourceCount;
912 LIST_ENTRY *Entry;
913 LIST_ENTRY *Entry2;
914 IP6_INTERFACE *IpIf;
915 IP6_PREFIX_LIST_ENTRY *PrefixEntry;
916 EFI_STATUS Status;
917 BOOLEAN IsUpdated;
918
919 ASSERT (Instance->DataItem[Ip6ConfigDataTypeManualAddress].Status != EFI_NOT_READY);
920
921 if (((DataSize % sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS)) != 0) || (DataSize == 0)) {
922 return EFI_BAD_BUFFER_SIZE;
923 }
924
925 if (Instance->Policy != Ip6ConfigPolicyManual) {
926 return EFI_WRITE_PROTECTED;
927 }
928
929 NewAddressCount = DataSize / sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS);
930 NewAddress = (EFI_IP6_CONFIG_MANUAL_ADDRESS *) Data;
931
932 for (Index1 = 0; Index1 < NewAddressCount; Index1++, NewAddress++) {
933
934 if (NetIp6IsLinkLocalAddr (&NewAddress->Address) ||
935 !NetIp6IsValidUnicast (&NewAddress->Address) ||
936 (NewAddress->PrefixLength > 128)
937 ) {
938 //
939 // make sure the IPv6 address is unicast and not link-local address &&
940 // the prefix length is valid.
941 //
942 return EFI_INVALID_PARAMETER;
943 }
944
945 TmpAddress = NewAddress + 1;
946 for (Index2 = Index1 + 1; Index2 < NewAddressCount; Index2++, TmpAddress++) {
947 //
948 // Any two addresses in the array can't be equal.
949 //
950 if (EFI_IP6_EQUAL (&TmpAddress->Address, &NewAddress->Address)) {
951
952 return EFI_INVALID_PARAMETER;
953 }
954 }
955 }
956
957 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
958
959 //
960 // Build the current source address list.
961 //
962 InitializeListHead (&CurrentSourceList);
963 CurrentSourceCount = 0;
964
965 NET_LIST_FOR_EACH (Entry, &IpSb->Interfaces) {
966 IpIf = NET_LIST_USER_STRUCT_S (Entry, IP6_INTERFACE, Link, IP6_INTERFACE_SIGNATURE);
967
968 NET_LIST_FOR_EACH (Entry2, &IpIf->AddressList) {
969 CurrentAddrInfo = NET_LIST_USER_STRUCT_S (Entry2, IP6_ADDRESS_INFO, Link, IP6_ADDR_INFO_SIGNATURE);
970
971 Copy = AllocateCopyPool (sizeof (IP6_ADDRESS_INFO), CurrentAddrInfo);
972 if (Copy == NULL) {
973 break;
974 }
975
976 InsertTailList (&CurrentSourceList, &Copy->Link);
977 CurrentSourceCount++;
978 }
979 }
980
981 //
982 // Update the value... a long journey starts
983 //
984 NewAddress = AllocateCopyPool (DataSize, Data);
985 if (NewAddress == NULL) {
986 Ip6RemoveAddr (NULL, &CurrentSourceList, &CurrentSourceCount, NULL, 0);
987
988 return EFI_OUT_OF_RESOURCES;
989 }
990
991 //
992 // Store the new data, and init the DataItem status to EFI_NOT_READY because
993 // we may have an asynchronous configuration process.
994 //
995 DataItem = &Instance->DataItem[Ip6ConfigDataTypeManualAddress];
996 if (DataItem->Data.Ptr != NULL) {
997 FreePool (DataItem->Data.Ptr);
998 }
999 DataItem->Data.Ptr = NewAddress;
1000 DataItem->DataSize = DataSize;
1001 DataItem->Status = EFI_NOT_READY;
1002
1003 //
1004 // Trigger DAD, it's an asynchronous process.
1005 //
1006 IsUpdated = FALSE;
1007
1008 for (Index1 = 0; Index1 < NewAddressCount; Index1++, NewAddress++) {
1009 if (Ip6IsOneOfSetAddress (IpSb, &NewAddress->Address, NULL, &CurrentAddrInfo)) {
1010 ASSERT (CurrentAddrInfo != NULL);
1011 //
1012 // Remove this already existing source address from the CurrentSourceList
1013 // built before.
1014 //
1015 Ip6RemoveAddr (
1016 NULL,
1017 &CurrentSourceList,
1018 &CurrentSourceCount,
1019 &CurrentAddrInfo->Address,
1020 128
1021 );
1022
1023 //
1024 // If the new address's prefix length is not specified, just use the previous configured
1025 // prefix length for this address.
1026 //
1027 if (NewAddress->PrefixLength == 0) {
1028 NewAddress->PrefixLength = CurrentAddrInfo->PrefixLength;
1029 }
1030
1031 //
1032 // This manual address is already in use, see whether prefix length is changed.
1033 //
1034 if (NewAddress->PrefixLength != CurrentAddrInfo->PrefixLength) {
1035 //
1036 // Remove the on-link prefix table, the route entry will be removed
1037 // implicitly.
1038 //
1039 PrefixEntry = Ip6FindPrefixListEntry (
1040 IpSb,
1041 TRUE,
1042 CurrentAddrInfo->PrefixLength,
1043 &CurrentAddrInfo->Address
1044 );
1045 if (PrefixEntry != NULL) {
1046 Ip6DestroyPrefixListEntry (IpSb, PrefixEntry, TRUE, FALSE);
1047 }
1048
1049 //
1050 // Save the prefix length.
1051 //
1052 CurrentAddrInfo->PrefixLength = NewAddress->PrefixLength;
1053 IsUpdated = TRUE;
1054 }
1055
1056 //
1057 // create a new on-link prefix entry.
1058 //
1059 PrefixEntry = Ip6FindPrefixListEntry (
1060 IpSb,
1061 TRUE,
1062 NewAddress->PrefixLength,
1063 &NewAddress->Address
1064 );
1065 if (PrefixEntry == NULL) {
1066 Ip6CreatePrefixListEntry (
1067 IpSb,
1068 TRUE,
1069 (UINT32) IP6_INFINIT_LIFETIME,
1070 (UINT32) IP6_INFINIT_LIFETIME,
1071 NewAddress->PrefixLength,
1072 &NewAddress->Address
1073 );
1074 }
1075
1076 CurrentAddrInfo->IsAnycast = NewAddress->IsAnycast;
1077 //
1078 // Artificially mark this address passed DAD be'coz it is already in use.
1079 //
1080 Ip6ManualAddrDadCallback (TRUE, &NewAddress->Address, Instance);
1081 } else {
1082 //
1083 // A new address.
1084 //
1085 IsUpdated = TRUE;
1086
1087 //
1088 // Set the new address, this will trigger DAD and activate the address if
1089 // DAD succeeds.
1090 //
1091 Ip6SetAddress (
1092 IpSb->DefaultInterface,
1093 &NewAddress->Address,
1094 NewAddress->IsAnycast,
1095 NewAddress->PrefixLength,
1096 (UINT32) IP6_INFINIT_LIFETIME,
1097 (UINT32) IP6_INFINIT_LIFETIME,
1098 Ip6ManualAddrDadCallback,
1099 Instance
1100 );
1101 }
1102 }
1103
1104 //
1105 // Check the CurrentSourceList, it now contains those addresses currently in
1106 // use and will be removed.
1107 //
1108 IpIf = IpSb->DefaultInterface;
1109
1110 while (!IsListEmpty (&CurrentSourceList)) {
1111 IsUpdated = TRUE;
1112
1113 CurrentAddrInfo = NET_LIST_HEAD (&CurrentSourceList, IP6_ADDRESS_INFO, Link);
1114
1115 //
1116 // This local address is going to be removed, the IP instances that are
1117 // currently using it will be destroyed.
1118 //
1119 Ip6RemoveAddr (
1120 IpSb,
1121 &IpIf->AddressList,
1122 &IpIf->AddressCount,
1123 &CurrentAddrInfo->Address,
1124 128
1125 );
1126
1127 //
1128 // Remove the on-link prefix table, the route entry will be removed
1129 // implicitly.
1130 //
1131 PrefixEntry = Ip6FindPrefixListEntry (
1132 IpSb,
1133 TRUE,
1134 CurrentAddrInfo->PrefixLength,
1135 &CurrentAddrInfo->Address
1136 );
1137 if (PrefixEntry != NULL) {
1138 Ip6DestroyPrefixListEntry (IpSb, PrefixEntry, TRUE, FALSE);
1139 }
1140
1141 RemoveEntryList (&CurrentAddrInfo->Link);
1142 FreePool (CurrentAddrInfo);
1143 }
1144
1145 if (IsUpdated) {
1146 if (DataItem->Status == EFI_NOT_READY) {
1147 //
1148 // If DAD is disabled on this interface, the configuration process is
1149 // actually synchronous, and the data item's status will be changed to
1150 // the final status before we reach here, just check it.
1151 //
1152 Status = EFI_NOT_READY;
1153 } else {
1154 Status = EFI_SUCCESS;
1155 }
1156 } else {
1157 //
1158 // No update is taken, reset the status to success and return EFI_ABORTED.
1159 //
1160 DataItem->Status = EFI_SUCCESS;
1161 Status = EFI_ABORTED;
1162 }
1163
1164 return Status;
1165 }
1166
1167 /**
1168 The work function for EfiIp6ConfigSetData() to set the gateway addresses manually
1169 for the EFI IPv6 network stack that is running on the communication device that
1170 this EFI IPv6 Configuration Protocol manages. It is not configurable when the policy is
1171 Ip6ConfigPolicyAutomatic. The gateway addresses must be unicast IPv6 addresses.
1172
1173 @param[in] Instance The pointer to the IP6 config instance data.
1174 @param[in] DataSize The size of the buffer pointed to by Data in bytes.
1175 @param[in] Data The data buffer to set. This points to an array of
1176 EFI_IPv6_ADDRESS instances.
1177
1178 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
1179 @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
1180 under the current policy.
1181 @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
1182 @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to complete the operation.
1183 @retval EFI_ABORTED The manual gateway addresses to be set equal the
1184 current configuration.
1185 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
1186 network stack was set.
1187
1188 **/
1189 EFI_STATUS
1190 Ip6ConfigSetGateway (
1191 IN IP6_CONFIG_INSTANCE *Instance,
1192 IN UINTN DataSize,
1193 IN VOID *Data
1194 )
1195 {
1196 UINTN Index1;
1197 UINTN Index2;
1198 EFI_IPv6_ADDRESS *OldGateway;
1199 EFI_IPv6_ADDRESS *NewGateway;
1200 UINTN OldGatewayCount;
1201 UINTN NewGatewayCount;
1202 IP6_CONFIG_DATA_ITEM *Item;
1203 BOOLEAN OneRemoved;
1204 BOOLEAN OneAdded;
1205 IP6_SERVICE *IpSb;
1206 IP6_DEFAULT_ROUTER *DefaultRouter;
1207 VOID *Tmp;
1208
1209 if ((DataSize % sizeof (EFI_IPv6_ADDRESS) != 0) || (DataSize == 0)) {
1210 return EFI_BAD_BUFFER_SIZE;
1211 }
1212
1213 if (Instance->Policy != Ip6ConfigPolicyManual) {
1214 return EFI_WRITE_PROTECTED;
1215 }
1216
1217 NewGateway = (EFI_IPv6_ADDRESS *) Data;
1218 NewGatewayCount = DataSize / sizeof (EFI_IPv6_ADDRESS);
1219 for (Index1 = 0; Index1 < NewGatewayCount; Index1++) {
1220
1221 if (!NetIp6IsValidUnicast (NewGateway + Index1)) {
1222
1223 return EFI_INVALID_PARAMETER;
1224 }
1225
1226 for (Index2 = Index1 + 1; Index2 < NewGatewayCount; Index2++) {
1227 if (EFI_IP6_EQUAL (NewGateway + Index1, NewGateway + Index2)) {
1228 return EFI_INVALID_PARAMETER;
1229 }
1230 }
1231 }
1232
1233 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
1234 Item = &Instance->DataItem[Ip6ConfigDataTypeGateway];
1235 OldGateway = Item->Data.Gateway;
1236 OldGatewayCount = Item->DataSize / sizeof (EFI_IPv6_ADDRESS);
1237 OneRemoved = FALSE;
1238 OneAdded = FALSE;
1239
1240 if (NewGatewayCount != OldGatewayCount) {
1241 Tmp = AllocatePool (DataSize);
1242 if (Tmp == NULL) {
1243 return EFI_OUT_OF_RESOURCES;
1244 }
1245 } else {
1246 Tmp = NULL;
1247 }
1248
1249 for (Index1 = 0; Index1 < OldGatewayCount; Index1++) {
1250 //
1251 // Find the gateways that are no long in the new setting and remove them.
1252 //
1253 for (Index2 = 0; Index2 < NewGatewayCount; Index2++) {
1254 if (EFI_IP6_EQUAL (OldGateway + Index1, NewGateway + Index2)) {
1255 OneRemoved = TRUE;
1256 break;
1257 }
1258 }
1259
1260 if (Index2 == NewGatewayCount) {
1261 //
1262 // Remove this default router.
1263 //
1264 DefaultRouter = Ip6FindDefaultRouter (IpSb, OldGateway + Index1);
1265 if (DefaultRouter != NULL) {
1266 Ip6DestroyDefaultRouter (IpSb, DefaultRouter);
1267 }
1268 }
1269 }
1270
1271 for (Index1 = 0; Index1 < NewGatewayCount; Index1++) {
1272
1273 DefaultRouter = Ip6FindDefaultRouter (IpSb, NewGateway + Index1);
1274 if (DefaultRouter == NULL) {
1275 Ip6CreateDefaultRouter (IpSb, NewGateway + Index1, IP6_INF_ROUTER_LIFETIME);
1276 OneAdded = TRUE;
1277 }
1278 }
1279
1280 if (!OneRemoved && !OneAdded) {
1281 Item->Status = EFI_SUCCESS;
1282 return EFI_ABORTED;
1283 } else {
1284
1285 if (Tmp != NULL) {
1286 if (Item->Data.Ptr != NULL) {
1287 FreePool (Item->Data.Ptr);
1288 }
1289 Item->Data.Ptr = Tmp;
1290 }
1291
1292 CopyMem (Item->Data.Ptr, Data, DataSize);
1293 Item->DataSize = DataSize;
1294 Item->Status = EFI_SUCCESS;
1295 return EFI_SUCCESS;
1296 }
1297 }
1298
1299 /**
1300 The work function for EfiIp6ConfigSetData() to set the DNS server list for the
1301 EFI IPv6 network stack running on the communication device that this EFI IPv6
1302 Configuration Protocol manages. It is not configurable when the policy is
1303 Ip6ConfigPolicyAutomatic. The DNS server addresses must be unicast IPv6 addresses.
1304
1305 @param[in] Instance The pointer to the IP6 config instance data.
1306 @param[in] DataSize The size of the buffer pointed to by Data in bytes.
1307 @param[in] Data The data buffer to set, points to an array of
1308 EFI_IPv6_ADDRESS instances.
1309
1310 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
1311 @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
1312 under the current policy.
1313 @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
1314 @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to complete the operation.
1315 @retval EFI_ABORTED The DNS server addresses to be set equal the current
1316 configuration.
1317 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
1318 network stack was set.
1319
1320 **/
1321 EFI_STATUS
1322 Ip6ConfigSetDnsServer (
1323 IN IP6_CONFIG_INSTANCE *Instance,
1324 IN UINTN DataSize,
1325 IN VOID *Data
1326 )
1327 {
1328 UINTN OldIndex;
1329 UINTN NewIndex;
1330 UINTN Index1;
1331 EFI_IPv6_ADDRESS *OldDns;
1332 EFI_IPv6_ADDRESS *NewDns;
1333 UINTN OldDnsCount;
1334 UINTN NewDnsCount;
1335 IP6_CONFIG_DATA_ITEM *Item;
1336 BOOLEAN OneAdded;
1337 VOID *Tmp;
1338
1339 if ((DataSize % sizeof (EFI_IPv6_ADDRESS) != 0) || (DataSize == 0)) {
1340 return EFI_BAD_BUFFER_SIZE;
1341 }
1342
1343 if (Instance->Policy != Ip6ConfigPolicyManual) {
1344 return EFI_WRITE_PROTECTED;
1345 }
1346
1347 Item = &Instance->DataItem[Ip6ConfigDataTypeDnsServer];
1348 NewDns = (EFI_IPv6_ADDRESS *) Data;
1349 OldDns = Item->Data.DnsServers;
1350 NewDnsCount = DataSize / sizeof (EFI_IPv6_ADDRESS);
1351 OldDnsCount = Item->DataSize / sizeof (EFI_IPv6_ADDRESS);
1352 OneAdded = FALSE;
1353
1354 if (NewDnsCount != OldDnsCount) {
1355 Tmp = AllocatePool (DataSize);
1356 if (Tmp == NULL) {
1357 return EFI_OUT_OF_RESOURCES;
1358 }
1359 } else {
1360 Tmp = NULL;
1361 }
1362
1363 for (NewIndex = 0; NewIndex < NewDnsCount; NewIndex++) {
1364
1365 if (!NetIp6IsValidUnicast (NewDns + NewIndex)) {
1366 //
1367 // The dns server address must be unicast.
1368 //
1369 if (Tmp != NULL) {
1370 FreePool (Tmp);
1371 }
1372 return EFI_INVALID_PARAMETER;
1373 }
1374
1375 for (Index1 = NewIndex + 1; Index1 < NewDnsCount; Index1++) {
1376 if (EFI_IP6_EQUAL (NewDns + NewIndex, NewDns + Index1)) {
1377 if (Tmp != NULL) {
1378 FreePool (Tmp);
1379 }
1380 return EFI_INVALID_PARAMETER;
1381 }
1382 }
1383
1384 if (OneAdded) {
1385 //
1386 // If any address in the new setting is not in the old settings, skip the
1387 // comparision below.
1388 //
1389 continue;
1390 }
1391
1392 for (OldIndex = 0; OldIndex < OldDnsCount; OldIndex++) {
1393 if (EFI_IP6_EQUAL (NewDns + NewIndex, OldDns + OldIndex)) {
1394 //
1395 // If found break out.
1396 //
1397 break;
1398 }
1399 }
1400
1401 if (OldIndex == OldDnsCount) {
1402 OneAdded = TRUE;
1403 }
1404 }
1405
1406 if (!OneAdded && (DataSize == Item->DataSize)) {
1407 //
1408 // No new item is added and the size is the same.
1409 //
1410 Item->Status = EFI_SUCCESS;
1411 return EFI_ABORTED;
1412 } else {
1413 if (Tmp != NULL) {
1414 if (Item->Data.Ptr != NULL) {
1415 FreePool (Item->Data.Ptr);
1416 }
1417 Item->Data.Ptr = Tmp;
1418 }
1419
1420 CopyMem (Item->Data.Ptr, Data, DataSize);
1421 Item->DataSize = DataSize;
1422 Item->Status = EFI_SUCCESS;
1423 return EFI_SUCCESS;
1424 }
1425 }
1426
1427 /**
1428 Generate the operational state of the interface this IP6 config instance manages
1429 and output in EFI_IP6_CONFIG_INTERFACE_INFO.
1430
1431 @param[in] IpSb The pointer to the IP6 service binding instance.
1432 @param[out] IfInfo The pointer to the IP6 configuration interface information structure.
1433
1434 **/
1435 VOID
1436 Ip6ConfigInitIfInfo (
1437 IN IP6_SERVICE *IpSb,
1438 OUT EFI_IP6_CONFIG_INTERFACE_INFO *IfInfo
1439 )
1440 {
1441 UnicodeSPrint (
1442 IfInfo->Name,
1443 sizeof (IfInfo->Name),
1444 L"eth%d",
1445 IpSb->Ip6ConfigInstance.IfIndex
1446 );
1447
1448 IfInfo->IfType = IpSb->SnpMode.IfType;
1449 IfInfo->HwAddressSize = IpSb->SnpMode.HwAddressSize;
1450 CopyMem (&IfInfo->HwAddress, &IpSb->SnpMode.CurrentAddress, IfInfo->HwAddressSize);
1451 }
1452
1453 /**
1454 Parse DHCPv6 reply packet to get the DNS server list.
1455 It is the work function for Ip6ConfigOnDhcp6Reply and Ip6ConfigOnDhcp6Event.
1456
1457 @param[in] Dhcp6 The pointer to the EFI_DHCP6_PROTOCOL instance.
1458 @param[in, out] Instance The pointer to the IP6 configuration instance data.
1459 @param[in] Reply The pointer to the DHCPv6 reply packet.
1460
1461 @retval EFI_SUCCESS The DNS server address was retrieved from the reply packet.
1462 @retval EFI_NOT_READY The reply packet does not contain the DNS server option, or
1463 the DNS server address is not valid.
1464
1465 **/
1466 EFI_STATUS
1467 Ip6ConfigParseDhcpReply (
1468 IN EFI_DHCP6_PROTOCOL *Dhcp6,
1469 IN OUT IP6_CONFIG_INSTANCE *Instance,
1470 IN EFI_DHCP6_PACKET *Reply
1471 )
1472 {
1473 EFI_STATUS Status;
1474 UINT32 OptCount;
1475 EFI_DHCP6_PACKET_OPTION **OptList;
1476 UINT16 OpCode;
1477 UINT16 Length;
1478 UINTN Index;
1479 UINTN Index2;
1480 EFI_IPv6_ADDRESS *DnsServer;
1481 IP6_CONFIG_DATA_ITEM *Item;
1482
1483 //
1484 // A DHCPv6 reply packet is received as the response to our InfoRequest
1485 // packet.
1486 //
1487 OptCount = 0;
1488 Status = Dhcp6->Parse (Dhcp6, Reply, &OptCount, NULL);
1489 if (Status != EFI_BUFFER_TOO_SMALL) {
1490 return EFI_NOT_READY;
1491 }
1492
1493 OptList = AllocatePool (OptCount * sizeof (EFI_DHCP6_PACKET_OPTION *));
1494 if (OptList == NULL) {
1495 return EFI_NOT_READY;
1496 }
1497
1498 Status = Dhcp6->Parse (Dhcp6, Reply, &OptCount, OptList);
1499 if (EFI_ERROR (Status)) {
1500 Status = EFI_NOT_READY;
1501 goto ON_EXIT;
1502 }
1503
1504 Status = EFI_SUCCESS;
1505
1506 for (Index = 0; Index < OptCount; Index++) {
1507 //
1508 // Go through all the options to check the ones we are interested in.
1509 // The OpCode and Length are in network byte-order and may not be naturally
1510 // aligned.
1511 //
1512 CopyMem (&OpCode, &OptList[Index]->OpCode, sizeof (OpCode));
1513 OpCode = NTOHS (OpCode);
1514
1515 if (OpCode == DHCP6_OPT_DNS_SERVERS) {
1516 CopyMem (&Length, &OptList[Index]->OpLen, sizeof (Length));
1517 Length = NTOHS (Length);
1518
1519 if ((Length == 0) || ((Length % sizeof (EFI_IPv6_ADDRESS)) != 0)) {
1520 //
1521 // The length should be a multiple of 16 bytes.
1522 //
1523 Status = EFI_NOT_READY;
1524 break;
1525 }
1526
1527 //
1528 // Validate the DnsServers: whether they are unicast addresses.
1529 //
1530 DnsServer = (EFI_IPv6_ADDRESS *) OptList[Index]->Data;
1531 for (Index2 = 0; Index2 < Length / sizeof (EFI_IPv6_ADDRESS); Index2++) {
1532 if (!NetIp6IsValidUnicast (DnsServer)) {
1533 Status = EFI_NOT_READY;
1534 goto ON_EXIT;
1535 }
1536
1537 DnsServer++;
1538 }
1539
1540 Item = &Instance->DataItem[Ip6ConfigDataTypeDnsServer];
1541
1542 if (Item->DataSize != Length) {
1543 if (Item->Data.Ptr != NULL) {
1544 FreePool (Item->Data.Ptr);
1545 }
1546
1547 Item->Data.Ptr = AllocatePool (Length);
1548 ASSERT (Item->Data.Ptr != NULL);
1549 }
1550
1551 CopyMem (Item->Data.Ptr, OptList[Index]->Data, Length);
1552 Item->DataSize = Length;
1553 Item->Status = EFI_SUCCESS;
1554
1555 //
1556 // Signal the waiting events.
1557 //
1558 NetMapIterate (&Item->EventMap, Ip6ConfigSignalEvent, NULL);
1559
1560 break;
1561 }
1562 }
1563
1564 ON_EXIT:
1565
1566 FreePool (OptList);
1567 return Status;
1568 }
1569
1570 /**
1571 The callback function for Ip6SetAddr. The prototype is defined
1572 as IP6_DAD_CALLBACK. It is called after Duplicate Address Detection is performed
1573 on the tentative address by DHCPv6 in Ip6ConfigOnDhcp6Event().
1574
1575 @param[in] IsDadPassed If TRUE, Duplicate Address Detection passes.
1576 @param[in] TargetAddress The tentative IPv6 address to be checked.
1577 @param[in] Context Pointer to the IP6 configuration instance data.
1578
1579 **/
1580 VOID
1581 Ip6ConfigSetStatefulAddrCallback (
1582 IN BOOLEAN IsDadPassed,
1583 IN EFI_IPv6_ADDRESS *TargetAddress,
1584 IN VOID *Context
1585 )
1586 {
1587 IP6_CONFIG_INSTANCE *Instance;
1588
1589 Instance = (IP6_CONFIG_INSTANCE *) Context;
1590 NET_CHECK_SIGNATURE (Instance, IP6_CONFIG_INSTANCE_SIGNATURE);
1591
1592 //
1593 // We should record the addresses that fail the DAD, and DECLINE them.
1594 //
1595 if (IsDadPassed) {
1596 //
1597 // Decrease the count, no interests in those passed DAD.
1598 //
1599 if (Instance->FailedIaAddressCount > 0 ) {
1600 Instance->FailedIaAddressCount--;
1601 }
1602 } else {
1603 //
1604 // Record it.
1605 //
1606 IP6_COPY_ADDRESS (Instance->DeclineAddress + Instance->DeclineAddressCount, TargetAddress);
1607 Instance->DeclineAddressCount++;
1608 }
1609
1610 if (Instance->FailedIaAddressCount == Instance->DeclineAddressCount) {
1611 //
1612 // The checking on all addresses are finished.
1613 //
1614 if (Instance->DeclineAddressCount != 0) {
1615 //
1616 // Decline those duplicates.
1617 //
1618 if (Instance->Dhcp6 != NULL) {
1619 Instance->Dhcp6->Decline (
1620 Instance->Dhcp6,
1621 Instance->DeclineAddressCount,
1622 Instance->DeclineAddress
1623 );
1624 }
1625 }
1626
1627 if (Instance->DeclineAddress != NULL) {
1628 FreePool (Instance->DeclineAddress);
1629 }
1630 Instance->DeclineAddress = NULL;
1631 Instance->DeclineAddressCount = 0;
1632 }
1633 }
1634
1635 /**
1636 The event handle routine when DHCPv6 process is finished or is updated.
1637
1638 @param[in] Event Not used.
1639 @param[in] Context The pointer to the IP6 configuration instance data.
1640
1641 **/
1642 VOID
1643 EFIAPI
1644 Ip6ConfigOnDhcp6Event (
1645 IN EFI_EVENT Event,
1646 IN VOID *Context
1647 )
1648 {
1649 IP6_CONFIG_INSTANCE *Instance;
1650 EFI_DHCP6_PROTOCOL *Dhcp6;
1651 EFI_STATUS Status;
1652 EFI_DHCP6_MODE_DATA Dhcp6ModeData;
1653 EFI_DHCP6_IA *Ia;
1654 EFI_DHCP6_IA_ADDRESS *IaAddr;
1655 UINT32 Index;
1656 IP6_SERVICE *IpSb;
1657 IP6_ADDRESS_INFO *AddrInfo;
1658 IP6_INTERFACE *IpIf;
1659
1660 Instance = (IP6_CONFIG_INSTANCE *) Context;
1661
1662 if ((Instance->Policy != Ip6ConfigPolicyAutomatic) || Instance->OtherInfoOnly) {
1663 //
1664 // IPv6 is not operating in the automatic policy now or
1665 // the DHCPv6 information request message exchange is aborted.
1666 //
1667 return ;
1668 }
1669
1670 //
1671 // The stateful address autoconfiguration is done or updated.
1672 //
1673 Dhcp6 = Instance->Dhcp6;
1674
1675 Status = Dhcp6->GetModeData (Dhcp6, &Dhcp6ModeData, NULL);
1676 if (EFI_ERROR (Status)) {
1677 return ;
1678 }
1679
1680 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
1681 IpIf = IpSb->DefaultInterface;
1682 Ia = Dhcp6ModeData.Ia;
1683 IaAddr = Ia->IaAddress;
1684
1685 if (Instance->DeclineAddress != NULL) {
1686 FreePool (Instance->DeclineAddress);
1687 }
1688
1689 Instance->DeclineAddress = (EFI_IPv6_ADDRESS *) AllocatePool (Ia->IaAddressCount * sizeof (EFI_IPv6_ADDRESS));
1690 if (Instance->DeclineAddress == NULL) {
1691 goto ON_EXIT;
1692 }
1693
1694 Instance->FailedIaAddressCount = Ia->IaAddressCount;
1695 Instance->DeclineAddressCount = 0;
1696
1697 for (Index = 0; Index < Ia->IaAddressCount; Index++, IaAddr++) {
1698 if (Ia->IaAddress[Index].ValidLifetime != 0 && Ia->State == Dhcp6Bound) {
1699 //
1700 // Set this address, either it's a new address or with updated lifetimes.
1701 // An appropriate prefix length will be set.
1702 //
1703 Ip6SetAddress (
1704 IpIf,
1705 &IaAddr->IpAddress,
1706 FALSE,
1707 0,
1708 IaAddr->ValidLifetime,
1709 IaAddr->PreferredLifetime,
1710 Ip6ConfigSetStatefulAddrCallback,
1711 Instance
1712 );
1713 } else {
1714 //
1715 // discard this address, artificially decrease the count as if this address
1716 // passed DAD.
1717 //
1718 if (Ip6IsOneOfSetAddress (IpSb, &IaAddr->IpAddress, NULL, &AddrInfo)) {
1719 ASSERT (AddrInfo != NULL);
1720 Ip6RemoveAddr (
1721 IpSb,
1722 &IpIf->AddressList,
1723 &IpIf->AddressCount,
1724 &AddrInfo->Address,
1725 AddrInfo->PrefixLength
1726 );
1727 }
1728
1729 if (Instance->FailedIaAddressCount > 0) {
1730 Instance->FailedIaAddressCount--;
1731 }
1732 }
1733 }
1734
1735 //
1736 // Parse the Reply packet to get the options we need.
1737 //
1738 if (Dhcp6ModeData.Ia->ReplyPacket != NULL) {
1739 Ip6ConfigParseDhcpReply (Dhcp6, Instance, Dhcp6ModeData.Ia->ReplyPacket);
1740 }
1741
1742 ON_EXIT:
1743
1744 FreePool (Dhcp6ModeData.ClientId);
1745 FreePool (Dhcp6ModeData.Ia);
1746 }
1747
1748 /**
1749 The event process routine when the DHCPv6 server is answered with a reply packet
1750 for an information request.
1751
1752 @param[in] This Points to the EFI_DHCP6_PROTOCOL.
1753 @param[in] Context The pointer to the IP6 configuration instance data.
1754 @param[in] Packet The DHCPv6 reply packet.
1755
1756 @retval EFI_SUCCESS The DNS server address was retrieved from the reply packet.
1757 @retval EFI_NOT_READY The reply packet does not contain the DNS server option, or
1758 the DNS server address is not valid.
1759
1760 **/
1761 EFI_STATUS
1762 EFIAPI
1763 Ip6ConfigOnDhcp6Reply (
1764 IN EFI_DHCP6_PROTOCOL *This,
1765 IN VOID *Context,
1766 IN EFI_DHCP6_PACKET *Packet
1767 )
1768 {
1769 return Ip6ConfigParseDhcpReply (This, (IP6_CONFIG_INSTANCE *) Context, Packet);
1770 }
1771
1772 /**
1773 The event process routine when the DHCPv6 service binding protocol is installed
1774 in the system.
1775
1776 @param[in] Event Not used.
1777 @param[in] Context The pointer to the IP6 config instance data.
1778
1779 **/
1780 VOID
1781 EFIAPI
1782 Ip6ConfigOnDhcp6SbInstalled (
1783 IN EFI_EVENT Event,
1784 IN VOID *Context
1785 )
1786 {
1787 IP6_CONFIG_INSTANCE *Instance;
1788
1789 Instance = (IP6_CONFIG_INSTANCE *) Context;
1790
1791 if ((Instance->Dhcp6Handle != NULL) || (Instance->Policy != Ip6ConfigPolicyAutomatic)) {
1792 //
1793 // The DHCP6 child is already created or the policy is no longer AUTOMATIC.
1794 //
1795 return ;
1796 }
1797
1798 Ip6ConfigStartStatefulAutoConfig (Instance, Instance->OtherInfoOnly);
1799 }
1800
1801 /**
1802 Set the configuration for the EFI IPv6 network stack running on the communication
1803 device this EFI IPv6 Configuration Protocol instance manages.
1804
1805 This function is used to set the configuration data of type DataType for the EFI
1806 IPv6 network stack that is running on the communication device that this EFI IPv6
1807 Configuration Protocol instance manages.
1808
1809 DataSize is used to calculate the count of structure instances in the Data for
1810 a DataType in which multiple structure instances are allowed.
1811
1812 This function is always non-blocking. When setting some type of configuration data,
1813 an asynchronous process is invoked to check the correctness of the data, such as
1814 performing Duplicate Address Detection on the manually set local IPv6 addresses.
1815 EFI_NOT_READY is returned immediately to indicate that such an asynchronous process
1816 is invoked, and the process is not finished yet. The caller wanting to get the result
1817 of the asynchronous process is required to call RegisterDataNotify() to register an
1818 event on the specified configuration data. Once the event is signaled, the caller
1819 can call GetData() to obtain the configuration data and know the result.
1820 For other types of configuration data that do not require an asynchronous configuration
1821 process, the result of the operation is immediately returned.
1822
1823 @param[in] This The pointer to the EFI_IP6_CONFIG_PROTOCOL instance.
1824 @param[in] DataType The type of data to set.
1825 @param[in] DataSize Size of the buffer pointed to by Data in bytes.
1826 @param[in] Data The data buffer to set. The type of the data buffer is
1827 associated with the DataType.
1828
1829 @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
1830 network stack was set successfully.
1831 @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
1832 - This is NULL.
1833 - Data is NULL.
1834 - One or more fields in Data do not match the requirement of the
1835 data type indicated by DataType.
1836 @retval EFI_WRITE_PROTECTED The specified configuration data is read-only or the specified
1837 configuration data cannot be set under the current policy.
1838 @retval EFI_ACCESS_DENIED Another set operation on the specified configuration
1839 data is already in process.
1840 @retval EFI_NOT_READY An asynchronous process was invoked to set the specified
1841 configuration data, and the process is not finished yet.
1842 @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type
1843 indicated by DataType.
1844 @retval EFI_UNSUPPORTED This DataType is not supported.
1845 @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
1846 @retval EFI_DEVICE_ERROR An unexpected system error or network error occurred.
1847
1848 **/
1849 EFI_STATUS
1850 EFIAPI
1851 EfiIp6ConfigSetData (
1852 IN EFI_IP6_CONFIG_PROTOCOL *This,
1853 IN EFI_IP6_CONFIG_DATA_TYPE DataType,
1854 IN UINTN DataSize,
1855 IN VOID *Data
1856 )
1857 {
1858 EFI_TPL OldTpl;
1859 EFI_STATUS Status;
1860 IP6_CONFIG_INSTANCE *Instance;
1861 IP6_SERVICE *IpSb;
1862
1863 if ((This == NULL) || (Data == NULL)) {
1864 return EFI_INVALID_PARAMETER;
1865 }
1866
1867 if (DataType >= Ip6ConfigDataTypeMaximum) {
1868 return EFI_UNSUPPORTED;
1869 }
1870
1871 Instance = IP6_CONFIG_INSTANCE_FROM_PROTOCOL (This);
1872 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
1873 NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
1874
1875 if (IpSb->LinkLocalDadFail) {
1876 return EFI_DEVICE_ERROR;
1877 }
1878
1879 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
1880
1881 Status = Instance->DataItem[DataType].Status;
1882 if (Status != EFI_NOT_READY) {
1883
1884 if (Instance->DataItem[DataType].SetData == NULL) {
1885 //
1886 // This type of data is readonly.
1887 //
1888 Status = EFI_WRITE_PROTECTED;
1889 } else {
1890
1891 Status = Instance->DataItem[DataType].SetData (Instance, DataSize, Data);
1892 if (!EFI_ERROR (Status)) {
1893 //
1894 // Fire up the events registered with this type of data.
1895 //
1896 NetMapIterate (&Instance->DataItem[DataType].EventMap, Ip6ConfigSignalEvent, NULL);
1897 Ip6ConfigWriteConfigData (IpSb->MacString, Instance);
1898 } else if (Status == EFI_ABORTED) {
1899 //
1900 // The SetData is aborted because the data to set is the same with
1901 // the one maintained.
1902 //
1903 Status = EFI_SUCCESS;
1904 NetMapIterate (&Instance->DataItem[DataType].EventMap, Ip6ConfigSignalEvent, NULL);
1905 }
1906 }
1907 } else {
1908 //
1909 // Another asynchornous process is on the way.
1910 //
1911 Status = EFI_ACCESS_DENIED;
1912 }
1913
1914 gBS->RestoreTPL (OldTpl);
1915
1916 return Status;
1917 }
1918
1919 /**
1920 Get the configuration data for the EFI IPv6 network stack running on the communication
1921 device that this EFI IPv6 Configuration Protocol instance manages.
1922
1923 This function returns the configuration data of type DataType for the EFI IPv6 network
1924 stack running on the communication device that this EFI IPv6 Configuration Protocol instance
1925 manages.
1926
1927 The caller is responsible for allocating the buffer used to return the specified
1928 configuration data. The required size will be returned to the caller if the size of
1929 the buffer is too small.
1930
1931 EFI_NOT_READY is returned if the specified configuration data is not ready due to an
1932 asynchronous configuration process already in progress. The caller can call RegisterDataNotify()
1933 to register an event on the specified configuration data. Once the asynchronous configuration
1934 process is finished, the event will be signaled, and a subsequent GetData() call will return
1935 the specified configuration data.
1936
1937 @param[in] This Pointer to the EFI_IP6_CONFIG_PROTOCOL instance.
1938 @param[in] DataType The type of data to get.
1939 @param[in, out] DataSize On input, in bytes, the size of Data. On output, in bytes, the
1940 size of buffer required to store the specified configuration data.
1941 @param[in] Data The data buffer in which the configuration data is returned. The
1942 type of the data buffer is associated with the DataType.
1943 This is an optional parameter that may be NULL.
1944
1945 @retval EFI_SUCCESS The specified configuration data was obtained successfully.
1946 @retval EFI_INVALID_PARAMETER One or more of the followings are TRUE:
1947 - This is NULL.
1948 - DataSize is NULL.
1949 - Data is NULL if *DataSize is not zero.
1950 @retval EFI_BUFFER_TOO_SMALL The size of Data is too small for the specified configuration data,
1951 and the required size is returned in DataSize.
1952 @retval EFI_NOT_READY The specified configuration data is not ready due to an
1953 asynchronous configuration process already in progress.
1954 @retval EFI_NOT_FOUND The specified configuration data is not found.
1955
1956 **/
1957 EFI_STATUS
1958 EFIAPI
1959 EfiIp6ConfigGetData (
1960 IN EFI_IP6_CONFIG_PROTOCOL *This,
1961 IN EFI_IP6_CONFIG_DATA_TYPE DataType,
1962 IN OUT UINTN *DataSize,
1963 IN VOID *Data OPTIONAL
1964 )
1965 {
1966 EFI_TPL OldTpl;
1967 EFI_STATUS Status;
1968 IP6_CONFIG_INSTANCE *Instance;
1969 IP6_CONFIG_DATA_ITEM *DataItem;
1970
1971 if ((This == NULL) || (DataSize == NULL) || ((*DataSize != 0) && (Data == NULL))) {
1972 return EFI_INVALID_PARAMETER;
1973 }
1974
1975 if (DataType >= Ip6ConfigDataTypeMaximum) {
1976 return EFI_NOT_FOUND;
1977 }
1978
1979 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
1980
1981 Instance = IP6_CONFIG_INSTANCE_FROM_PROTOCOL (This);
1982 DataItem = &Instance->DataItem[DataType];
1983
1984 Status = Instance->DataItem[DataType].Status;
1985 if (!EFI_ERROR (Status)) {
1986
1987 if (DataItem->GetData != NULL) {
1988
1989 Status = DataItem->GetData (Instance, DataSize, Data);
1990 } else if (*DataSize < Instance->DataItem[DataType].DataSize) {
1991 //
1992 // Update the buffer length.
1993 //
1994 *DataSize = Instance->DataItem[DataType].DataSize;
1995 Status = EFI_BUFFER_TOO_SMALL;
1996 } else {
1997
1998 *DataSize = Instance->DataItem[DataType].DataSize;
1999 CopyMem (Data, Instance->DataItem[DataType].Data.Ptr, *DataSize);
2000 }
2001 }
2002
2003 gBS->RestoreTPL (OldTpl);
2004
2005 return Status;
2006 }
2007
2008 /**
2009 Register an event that is signaled whenever a configuration process on the specified
2010 configuration data is done.
2011
2012 This function registers an event that is to be signaled whenever a configuration
2013 process on the specified configuration data is performed. An event can be registered
2014 for a different DataType simultaneously. The caller is responsible for determining
2015 which type of configuration data causes the signaling of the event in such an event.
2016
2017 @param[in] This Pointer to the EFI_IP6_CONFIG_PROTOCOL instance.
2018 @param[in] DataType The type of data to unregister the event for.
2019 @param[in] Event The event to register.
2020
2021 @retval EFI_SUCCESS The notification event for the specified configuration data is
2022 registered.
2023 @retval EFI_INVALID_PARAMETER This is NULL or Event is NULL.
2024 @retval EFI_UNSUPPORTED The configuration data type specified by DataType is not
2025 supported.
2026 @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
2027 @retval EFI_ACCESS_DENIED The Event is already registered for the DataType.
2028
2029 **/
2030 EFI_STATUS
2031 EFIAPI
2032 EfiIp6ConfigRegisterDataNotify (
2033 IN EFI_IP6_CONFIG_PROTOCOL *This,
2034 IN EFI_IP6_CONFIG_DATA_TYPE DataType,
2035 IN EFI_EVENT Event
2036 )
2037 {
2038 EFI_TPL OldTpl;
2039 EFI_STATUS Status;
2040 IP6_CONFIG_INSTANCE *Instance;
2041 NET_MAP *EventMap;
2042 NET_MAP_ITEM *Item;
2043
2044 if ((This == NULL) || (Event == NULL)) {
2045 return EFI_INVALID_PARAMETER;
2046 }
2047
2048 if (DataType >= Ip6ConfigDataTypeMaximum) {
2049 return EFI_UNSUPPORTED;
2050 }
2051
2052 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
2053
2054 Instance = IP6_CONFIG_INSTANCE_FROM_PROTOCOL (This);
2055 EventMap = &Instance->DataItem[DataType].EventMap;
2056
2057 //
2058 // Check whether this event is already registered for this DataType.
2059 //
2060 Item = NetMapFindKey (EventMap, Event);
2061 if (Item == NULL) {
2062
2063 Status = NetMapInsertTail (EventMap, Event, NULL);
2064
2065 if (EFI_ERROR (Status)) {
2066
2067 Status = EFI_OUT_OF_RESOURCES;
2068 }
2069
2070 } else {
2071
2072 Status = EFI_ACCESS_DENIED;
2073 }
2074
2075 gBS->RestoreTPL (OldTpl);
2076
2077 return Status;
2078 }
2079
2080 /**
2081 Remove a previously registered event for the specified configuration data.
2082
2083 @param This The pointer to the EFI_IP6_CONFIG_PROTOCOL instance.
2084 @param DataType The type of data to remove from the previously
2085 registered event.
2086 @param Event The event to be unregistered.
2087
2088 @retval EFI_SUCCESS The event registered for the specified
2089 configuration data was removed.
2090 @retval EFI_INVALID_PARAMETER This is NULL or Event is NULL.
2091 @retval EFI_NOT_FOUND The Event has not been registered for the
2092 specified DataType.
2093
2094 **/
2095 EFI_STATUS
2096 EFIAPI
2097 EfiIp6ConfigUnregisterDataNotify (
2098 IN EFI_IP6_CONFIG_PROTOCOL *This,
2099 IN EFI_IP6_CONFIG_DATA_TYPE DataType,
2100 IN EFI_EVENT Event
2101 )
2102 {
2103 EFI_TPL OldTpl;
2104 EFI_STATUS Status;
2105 IP6_CONFIG_INSTANCE *Instance;
2106 NET_MAP_ITEM *Item;
2107
2108 if ((This == NULL) || (Event == NULL)) {
2109 return EFI_INVALID_PARAMETER;
2110 }
2111
2112 if (DataType >= Ip6ConfigDataTypeMaximum) {
2113 return EFI_NOT_FOUND;
2114 }
2115
2116 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
2117
2118 Instance = IP6_CONFIG_INSTANCE_FROM_PROTOCOL (This);
2119
2120 Item = NetMapFindKey (&Instance->DataItem[DataType].EventMap, Event);
2121 if (Item != NULL) {
2122
2123 NetMapRemoveItem (&Instance->DataItem[DataType].EventMap, Item, NULL);
2124 Status = EFI_SUCCESS;
2125 } else {
2126
2127 Status = EFI_NOT_FOUND;
2128 }
2129
2130 gBS->RestoreTPL (OldTpl);
2131
2132 return Status;
2133 }
2134
2135 /**
2136 Initialize an IP6_CONFIG_INSTANCE.
2137
2138 @param[out] Instance The buffer of IP6_CONFIG_INSTANCE to be initialized.
2139
2140 @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to complete the operation.
2141 @retval EFI_SUCCESS The IP6_CONFIG_INSTANCE initialized successfully.
2142
2143 **/
2144 EFI_STATUS
2145 Ip6ConfigInitInstance (
2146 OUT IP6_CONFIG_INSTANCE *Instance
2147 )
2148 {
2149 IP6_SERVICE *IpSb;
2150 IP6_CONFIG_INSTANCE *TmpInstance;
2151 LIST_ENTRY *Entry;
2152 EFI_STATUS Status;
2153 UINTN Index;
2154 UINT16 IfIndex;
2155 IP6_CONFIG_DATA_ITEM *DataItem;
2156
2157 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
2158
2159 Instance->Signature = IP6_CONFIG_INSTANCE_SIGNATURE;
2160
2161 //
2162 // Determine the index of this interface.
2163 //
2164 IfIndex = 0;
2165 NET_LIST_FOR_EACH (Entry, &mIp6ConfigInstanceList) {
2166 TmpInstance = NET_LIST_USER_STRUCT_S (Entry, IP6_CONFIG_INSTANCE, Link, IP6_CONFIG_INSTANCE_SIGNATURE);
2167
2168 if (TmpInstance->IfIndex > IfIndex) {
2169 //
2170 // There is a sequence hole because some interface is down.
2171 //
2172 break;
2173 }
2174
2175 IfIndex++;
2176 }
2177
2178 Instance->IfIndex = IfIndex;
2179 NetListInsertBefore (Entry, &Instance->Link);
2180
2181 for (Index = 0; Index < Ip6ConfigDataTypeMaximum; Index++) {
2182 //
2183 // Initialize the event map for each data item.
2184 //
2185 NetMapInit (&Instance->DataItem[Index].EventMap);
2186 }
2187
2188 //
2189 // Initialize the NET_MAPs used for DAD on manually configured source addresses.
2190 //
2191 NetMapInit (&Instance->DadFailedMap);
2192 NetMapInit (&Instance->DadPassedMap);
2193
2194 //
2195 // Initialize each data type: associate storage and set data size for the
2196 // fixed size data types, hook the SetData function, set the data attribute.
2197 //
2198 DataItem = &Instance->DataItem[Ip6ConfigDataTypeInterfaceInfo];
2199 DataItem->GetData = Ip6ConfigGetIfInfo;
2200 DataItem->Data.Ptr = &Instance->InterfaceInfo;
2201 DataItem->DataSize = sizeof (Instance->InterfaceInfo);
2202 SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED | DATA_ATTRIB_VOLATILE);
2203 Ip6ConfigInitIfInfo (IpSb, &Instance->InterfaceInfo);
2204
2205 DataItem = &Instance->DataItem[Ip6ConfigDataTypeAltInterfaceId];
2206 DataItem->SetData = Ip6ConfigSetAltIfId;
2207 DataItem->Data.Ptr = &Instance->AltIfId;
2208 DataItem->DataSize = sizeof (Instance->AltIfId);
2209 DataItem->Status = EFI_NOT_FOUND;
2210 SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED);
2211
2212 DataItem = &Instance->DataItem[Ip6ConfigDataTypePolicy];
2213 DataItem->SetData = Ip6ConfigSetPolicy;
2214 DataItem->Data.Ptr = &Instance->Policy;
2215 DataItem->DataSize = sizeof (Instance->Policy);
2216 Instance->Policy = Ip6ConfigPolicyManual;
2217 SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED);
2218
2219 DataItem = &Instance->DataItem[Ip6ConfigDataTypeDupAddrDetectTransmits];
2220 DataItem->SetData = Ip6ConfigSetDadXmits;
2221 DataItem->Data.Ptr = &Instance->DadXmits;
2222 DataItem->DataSize = sizeof (Instance->DadXmits);
2223 Instance->DadXmits.DupAddrDetectTransmits = IP6_CONFIG_DEFAULT_DAD_XMITS;
2224 SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED);
2225
2226 DataItem = &Instance->DataItem[Ip6ConfigDataTypeManualAddress];
2227 DataItem->SetData = Ip6ConfigSetMaunualAddress;
2228 DataItem->Status = EFI_NOT_FOUND;
2229
2230 DataItem = &Instance->DataItem[Ip6ConfigDataTypeGateway];
2231 DataItem->SetData = Ip6ConfigSetGateway;
2232 DataItem->Status = EFI_NOT_FOUND;
2233
2234 DataItem = &Instance->DataItem[Ip6ConfigDataTypeDnsServer];
2235 DataItem->SetData = Ip6ConfigSetDnsServer;
2236 DataItem->Status = EFI_NOT_FOUND;
2237
2238 //
2239 // Create the event used for DHCP.
2240 //
2241 Status = gBS->CreateEvent (
2242 EVT_NOTIFY_SIGNAL,
2243 TPL_CALLBACK,
2244 Ip6ConfigOnDhcp6Event,
2245 Instance,
2246 &Instance->Dhcp6Event
2247 );
2248 ASSERT_EFI_ERROR (Status);
2249
2250 Instance->Configured = TRUE;
2251
2252 //
2253 // Try to read the config data from NV variable.
2254 //
2255 Status = Ip6ConfigReadConfigData (IpSb->MacString, Instance);
2256 if (Status == EFI_NOT_FOUND) {
2257 //
2258 // The NV variable is not set, so generate a random IAID, and write down the
2259 // fresh new configuration as the NV variable now.
2260 //
2261 Instance->IaId = NET_RANDOM (NetRandomInitSeed ());
2262
2263 for (Index = 0; Index < IpSb->SnpMode.HwAddressSize; Index++) {
2264 Instance->IaId |= (IpSb->SnpMode.CurrentAddress.Addr[Index] << ((Index << 3) & 31));
2265 }
2266
2267 Ip6ConfigWriteConfigData (IpSb->MacString, Instance);
2268 } else if (EFI_ERROR (Status)) {
2269 return Status;
2270 }
2271
2272 Instance->Ip6Config.SetData = EfiIp6ConfigSetData;
2273 Instance->Ip6Config.GetData = EfiIp6ConfigGetData;
2274 Instance->Ip6Config.RegisterDataNotify = EfiIp6ConfigRegisterDataNotify;
2275 Instance->Ip6Config.UnregisterDataNotify = EfiIp6ConfigUnregisterDataNotify;
2276
2277
2278 //
2279 // Publish the IP6 configuration form
2280 //
2281 return Ip6ConfigFormInit (Instance);
2282 }
2283
2284 /**
2285 Release an IP6_CONFIG_INSTANCE.
2286
2287 @param[in, out] Instance The buffer of IP6_CONFIG_INSTANCE to be freed.
2288
2289 **/
2290 VOID
2291 Ip6ConfigCleanInstance (
2292 IN OUT IP6_CONFIG_INSTANCE *Instance
2293 )
2294 {
2295 UINTN Index;
2296 IP6_CONFIG_DATA_ITEM *DataItem;
2297
2298 if (Instance->DeclineAddress != NULL) {
2299 FreePool (Instance->DeclineAddress);
2300 }
2301
2302 if (!Instance->Configured) {
2303 return ;
2304 }
2305
2306 if (Instance->Dhcp6Handle != NULL) {
2307
2308 Ip6ConfigDestroyDhcp6 (Instance);
2309 }
2310
2311 //
2312 // Close the event.
2313 //
2314 if (Instance->Dhcp6Event != NULL) {
2315 gBS->CloseEvent (Instance->Dhcp6Event);
2316 }
2317
2318 NetMapClean (&Instance->DadPassedMap);
2319 NetMapClean (&Instance->DadFailedMap);
2320
2321 for (Index = 0; Index < Ip6ConfigDataTypeMaximum; Index++) {
2322
2323 DataItem = &Instance->DataItem[Index];
2324
2325 if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED)) {
2326 if (DataItem->Data.Ptr != NULL) {
2327 FreePool (DataItem->Data.Ptr);
2328 }
2329 DataItem->Data.Ptr = NULL;
2330 DataItem->DataSize = 0;
2331 }
2332
2333 NetMapClean (&Instance->DataItem[Index].EventMap);
2334 }
2335
2336 Ip6ConfigFormUnload (Instance);
2337
2338 RemoveEntryList (&Instance->Link);
2339 }
2340
2341 /**
2342 Destroy the Dhcp6 child in IP6_CONFIG_INSTANCE and release the resources.
2343
2344 @param[in, out] Instance The buffer of IP6_CONFIG_INSTANCE to be freed.
2345
2346 @retval EFI_SUCCESS The child was successfully destroyed.
2347 @retval Others Failed to destroy the child.
2348
2349 **/
2350 EFI_STATUS
2351 Ip6ConfigDestroyDhcp6 (
2352 IN OUT IP6_CONFIG_INSTANCE *Instance
2353 )
2354 {
2355 IP6_SERVICE *IpSb;
2356 EFI_STATUS Status;
2357 EFI_DHCP6_PROTOCOL *Dhcp6;
2358
2359 Dhcp6 = Instance->Dhcp6;
2360 ASSERT (Dhcp6 != NULL);
2361
2362 Dhcp6->Stop (Dhcp6);
2363 Dhcp6->Configure (Dhcp6, NULL);
2364 Instance->Dhcp6 = NULL;
2365
2366 IpSb = IP6_SERVICE_FROM_IP6_CONFIG_INSTANCE (Instance);
2367
2368 //
2369 // Close DHCPv6 protocol and destroy the child.
2370 //
2371 Status = gBS->CloseProtocol (
2372 Instance->Dhcp6Handle,
2373 &gEfiDhcp6ProtocolGuid,
2374 IpSb->Image,
2375 IpSb->Controller
2376 );
2377 if (EFI_ERROR (Status)) {
2378 return Status;
2379 }
2380
2381 Status = NetLibDestroyServiceChild (
2382 IpSb->Controller,
2383 IpSb->Image,
2384 &gEfiDhcp6ServiceBindingProtocolGuid,
2385 Instance->Dhcp6Handle
2386 );
2387
2388 Instance->Dhcp6Handle = NULL;
2389
2390 return Status;
2391 }
2392
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