+ //\r
+ // Configure DNS6 instance for the DNS server address and protocol.\r
+ //\r
+ ZeroMem (&Dns6ConfigData, sizeof (EFI_DNS6_CONFIG_DATA));\r
+ Dns6ConfigData.DnsServerCount = 1;\r
+ Dns6ConfigData.DnsServerList = DnsServerList;\r
+ Dns6ConfigData.EnableDnsCache = TRUE;\r
+ Dns6ConfigData.Protocol = EFI_IP_PROTO_UDP;\r
+ IP6_COPY_ADDRESS (&Dns6ConfigData.StationIp, &Private->TmpStationIp.v6);\r
+ Status = Dns6->Configure (\r
+ Dns6,\r
+ &Dns6ConfigData\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto Exit;\r
+ }\r
+\r
+ Token.Status = EFI_NOT_READY;\r
+ IsDone = FALSE;\r
+ //\r
+ // Create event to set the IsDone flag when name resolution is finished.\r
+ //\r
+ Status = gBS->CreateEvent (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_NOTIFY,\r
+ PxeBcCommonNotify,\r
+ &IsDone,\r
+ &Token.Event\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto Exit;\r
+ }\r
+\r
+ //\r
+ // Start asynchronous name resolution.\r
+ //\r
+ Status = Dns6->HostNameToIp (Dns6, HostName, &Token);\r
+ if (EFI_ERROR (Status)) {\r
+ goto Exit;\r
+ }\r
+\r
+ while (!IsDone) {\r
+ Dns6->Poll (Dns6);\r
+ }\r
+\r
+ //\r
+ // Name resolution is done, check result.\r
+ //\r
+ Status = Token.Status;\r
+ if (!EFI_ERROR (Status)) {\r
+ if (Token.RspData.H2AData == NULL) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ goto Exit;\r
+ }\r
+\r
+ if ((Token.RspData.H2AData->IpCount == 0) || (Token.RspData.H2AData->IpList == NULL)) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ goto Exit;\r
+ }\r
+\r
+ //\r
+ // We just return the first IPv6 address from DNS protocol.\r
+ //\r
+ IP6_COPY_ADDRESS (IpAddress, Token.RspData.H2AData->IpList);\r
+ Status = EFI_SUCCESS;\r
+ }\r
+\r
+Exit:\r
+ FreePool (HostName);\r
+\r
+ if (Token.Event != NULL) {\r
+ gBS->CloseEvent (Token.Event);\r
+ }\r
+\r
+ if (Token.RspData.H2AData != NULL) {\r
+ if (Token.RspData.H2AData->IpList != NULL) {\r
+ FreePool (Token.RspData.H2AData->IpList);\r
+ }\r
+\r
+ FreePool (Token.RspData.H2AData);\r
+ }\r
+\r
+ if (Dns6 != NULL) {\r
+ Dns6->Configure (Dns6, NULL);\r
+\r
+ gBS->CloseProtocol (\r
+ Dns6Handle,\r
+ &gEfiDns6ProtocolGuid,\r
+ Private->Image,\r
+ Private->Controller\r
+ );\r
+ }\r
+\r
+ if (Dns6Handle != NULL) {\r
+ NetLibDestroyServiceChild (\r
+ Private->Controller,\r
+ Private->Image,\r
+ &gEfiDns6ServiceBindingProtocolGuid,\r
+ Dns6Handle\r
+ );\r
+ }\r
+\r
+ if (DnsServerList != NULL) {\r
+ FreePool (DnsServerList);\r
+ }\r
+\r
+ return Status;\r
+}\r