/** @file\r
Functions implementation related with DHCPv6 for UefiPxeBc Driver.\r
\r
- Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r
\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
}\r
\r
//\r
- // The offer with assigned client address is a proxy offer.\r
+ // The offer with assigned client address is NOT a proxy offer.\r
// An ia_na option, embeded with valid ia_addr option and a status_code of success.\r
//\r
Option = Options[PXEBC_DHCP6_IDX_IA_NA];\r
}\r
}\r
\r
+/**\r
+ Check whether IP driver could route the message which will be sent to ServerIp address.\r
+ \r
+ This function will check the IP6 route table every 1 seconds until specified timeout is expired, if a valid\r
+ route is found in IP6 route table, the address will be filed in GatewayAddr and return.\r
+\r
+ @param[in] Private The pointer to PXEBC_PRIVATE_DATA.\r
+ @param[in] TimeOutInSecond Timeout value in seconds.\r
+ @param[out] GatewayAddr Pointer to store the gateway IP address.\r
+\r
+ @retval EFI_SUCCESS Found a valid gateway address successfully.\r
+ @retval EFI_TIMEOUT The operation is time out.\r
+ @retval Other Unexpect error happened.\r
+ \r
+**/\r
+EFI_STATUS\r
+PxeBcCheckRouteTable (\r
+ IN PXEBC_PRIVATE_DATA *Private,\r
+ IN UINTN TimeOutInSecond,\r
+ OUT EFI_IPv6_ADDRESS *GatewayAddr\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_IP6_PROTOCOL *Ip6;\r
+ EFI_IP6_MODE_DATA Ip6ModeData;\r
+ UINTN Index;\r
+ EFI_EVENT TimeOutEvt;\r
+ UINTN RetryCount;\r
+ BOOLEAN GatewayIsFound;\r
+\r
+ ASSERT (GatewayAddr != NULL);\r
+ ASSERT (Private != NULL);\r
+\r
+ Ip6 = Private->Ip6;\r
+ GatewayIsFound = FALSE;\r
+ RetryCount = 0;\r
+ TimeOutEvt = NULL;\r
+ ZeroMem (GatewayAddr, sizeof (EFI_IPv6_ADDRESS));\r
+\r
+ while (TRUE) {\r
+ Status = Ip6->GetModeData (Ip6, &Ip6ModeData, NULL, NULL);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ //\r
+ // Find out the gateway address which can route the message whcih send to ServerIp.\r
+ //\r
+ for (Index = 0; Index < Ip6ModeData.RouteCount; Index++) {\r
+ if (NetIp6IsNetEqual (&Private->ServerIp.v6, &Ip6ModeData.RouteTable[Index].Destination, Ip6ModeData.RouteTable[Index].PrefixLength)) {\r
+ IP6_COPY_ADDRESS (GatewayAddr, &Ip6ModeData.RouteTable[Index].Gateway);\r
+ GatewayIsFound = TRUE;\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (Ip6ModeData.AddressList != NULL) {\r
+ FreePool (Ip6ModeData.AddressList);\r
+ }\r
+ if (Ip6ModeData.GroupTable != NULL) {\r
+ FreePool (Ip6ModeData.GroupTable);\r
+ }\r
+ if (Ip6ModeData.RouteTable != NULL) {\r
+ FreePool (Ip6ModeData.RouteTable);\r
+ }\r
+ if (Ip6ModeData.NeighborCache != NULL) {\r
+ FreePool (Ip6ModeData.NeighborCache);\r
+ }\r
+ if (Ip6ModeData.PrefixTable != NULL) {\r
+ FreePool (Ip6ModeData.PrefixTable);\r
+ }\r
+ if (Ip6ModeData.IcmpTypeList != NULL) {\r
+ FreePool (Ip6ModeData.IcmpTypeList);\r
+ }\r
+ \r
+ if (GatewayIsFound || RetryCount == TimeOutInSecond) {\r
+ break;\r
+ }\r
+ \r
+ RetryCount++;\r
+ \r
+ //\r
+ // Delay 1 second then recheck it again.\r
+ //\r
+ if (TimeOutEvt == NULL) {\r
+ Status = gBS->CreateEvent (\r
+ EVT_TIMER,\r
+ TPL_CALLBACK,\r
+ NULL,\r
+ NULL,\r
+ &TimeOutEvt\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+ }\r
+\r
+ Status = gBS->SetTimer (TimeOutEvt, TimerRelative, TICKS_PER_SECOND);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+ while (EFI_ERROR (gBS->CheckEvent (TimeOutEvt))) {\r
+ Ip6->Poll (Ip6);\r
+ }\r
+ }\r
+ \r
+ON_EXIT:\r
+ if (TimeOutEvt != NULL) {\r
+ gBS->CloseEvent (TimeOutEvt);\r
+ }\r
+ \r
+ if (GatewayIsFound) {\r
+ Status = EFI_SUCCESS;\r
+ } else if (RetryCount == TimeOutInSecond) {\r
+ Status = EFI_TIMEOUT;\r
+ }\r
+\r
+ return Status; \r
+}\r
\r
/**\r
- Register the ready address by Ip6Config protocol.\r
+ Register the ready station address and gateway by Ip6Config protocol.\r
\r
@param[in] Private The pointer to PXEBC_PRIVATE_DATA.\r
@param[in] Address The pointer to the ready address.\r
EFI_IP6_CONFIG_PROTOCOL *Ip6Cfg;\r
EFI_IP6_CONFIG_POLICY Policy;\r
EFI_IP6_CONFIG_MANUAL_ADDRESS CfgAddr;\r
+ EFI_IPv6_ADDRESS GatewayAddr;\r
UINTN DataSize;\r
EFI_EVENT TimeOutEvt;\r
EFI_EVENT MappedEvt;\r
ZeroMem (&CfgAddr, sizeof (EFI_IP6_CONFIG_MANUAL_ADDRESS));\r
CopyMem (&CfgAddr.Address, Address, sizeof (EFI_IPv6_ADDRESS));\r
\r
+ Status = Ip6->Configure (Ip6, &Private->Ip6CfgData);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+\r
//\r
- // Get and store the current policy of IP6 driver.\r
+ // Retrieve the gateway address from IP6 route table.\r
//\r
- Status = Ip6Cfg->GetData (\r
- Ip6Cfg,\r
- Ip6ConfigDataTypePolicy,\r
- &DataSize,\r
- &Private->Ip6Policy\r
- );\r
+ Status = PxeBcCheckRouteTable (Private, PXEBC_IP6_ROUTE_TABLE_TIMEOUT, &GatewayAddr);\r
if (EFI_ERROR (Status)) {\r
goto ON_EXIT;\r
}\r
-\r
+ \r
//\r
// There is no channel between IP6 and PXE driver about address setting,\r
// so it has to set the new address by Ip6ConfigProtocol manually.\r
}\r
}\r
\r
+ //\r
+ // Set the default gateway address back if needed.\r
+ //\r
+ if (!NetIp6IsUnspecifiedAddr (&GatewayAddr)) {\r
+ Status = Ip6Cfg->SetData (\r
+ Ip6Cfg,\r
+ Ip6ConfigDataTypeGateway,\r
+ sizeof (EFI_IPv6_ADDRESS),\r
+ &GatewayAddr\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+ }\r
+\r
ON_EXIT:\r
if (MappedEvt != NULL) {\r
Ip6Cfg->UnregisterDataNotify (\r
return Status;\r
}\r
\r
+/**\r
+ Set the IP6 policy to Automatic.\r
+\r
+ @param[in] Private The pointer to PXEBC_PRIVATE_DATA.\r
+\r
+ @retval EFI_SUCCESS Switch the IP policy succesfully.\r
+ @retval Others Unexpect error happened.\r
+\r
+**/\r
+EFI_STATUS\r
+PxeBcSetIp6Policy (\r
+ IN PXEBC_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ EFI_IP6_CONFIG_POLICY Policy;\r
+ EFI_STATUS Status;\r
+ EFI_IP6_CONFIG_PROTOCOL *Ip6Cfg;\r
+ UINTN DataSize;\r
+\r
+ Ip6Cfg = Private->Ip6Cfg;\r
+ DataSize = sizeof (EFI_IP6_CONFIG_POLICY);\r
+\r
+ //\r
+ // Get and store the current policy of IP6 driver.\r
+ //\r
+ Status = Ip6Cfg->GetData (\r
+ Ip6Cfg,\r
+ Ip6ConfigDataTypePolicy,\r
+ &DataSize,\r
+ &Private->Ip6Policy\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ if (Private->Ip6Policy == Ip6ConfigPolicyManual) {\r
+ Policy = Ip6ConfigPolicyAutomatic;\r
+ Status = Ip6Cfg->SetData (\r
+ Ip6Cfg,\r
+ Ip6ConfigDataTypePolicy,\r
+ sizeof(EFI_IP6_CONFIG_POLICY),\r
+ &Policy\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // There is no need to recover later.\r
+ //\r
+ Private->Ip6Policy = PXEBC_IP6_POLICY_MAX;\r
+ }\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This function will register the station IP address and flush IP instance to start using the new IP address.\r
+ \r
+ @param[in] Private The pointer to PXEBC_PRIVATE_DATA.\r
+\r
+ @retval EFI_SUCCESS The new IP address has been configured successfully.\r
+ @retval Others Failed to configure the address.\r
+\r
+**/\r
+EFI_STATUS\r
+PxeBcSetIp6Address (\r
+ IN PXEBC_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_DHCP6_PROTOCOL *Dhcp6;\r
+ \r
+ Dhcp6 = Private->Dhcp6;\r
+\r
+ CopyMem (&Private->StationIp.v6, &Private->TmpStationIp.v6, sizeof (EFI_IPv6_ADDRESS));\r
+ CopyMem (&Private->PxeBc.Mode->StationIp.v6, &Private->StationIp.v6, sizeof (EFI_IPv6_ADDRESS));\r
+\r
+ Status = PxeBcRegisterIp6Address (Private, &Private->StationIp.v6);\r
+ if (EFI_ERROR (Status)) {\r
+ Dhcp6->Stop (Dhcp6);\r
+ return Status;\r
+ }\r
+\r
+ Status = PxeBcFlushStationIp (Private, &Private->StationIp, NULL);\r
+ if (EFI_ERROR (Status)) {\r
+ PxeBcUnregisterIp6Address (Private);\r
+ Dhcp6->Stop (Dhcp6);\r
+ return Status;\r
+ }\r
+\r
+ AsciiPrint ("\n Station IP address is ");\r
+ PxeBcShowIp6Addr (&Private->StationIp.v6);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
\r
/**\r
EFI_DHCP6_CALLBACK is provided by the consumer of the EFI DHCPv6 Protocol driver\r
}\r
\r
ASSERT (Mode.Ia->State == Dhcp6Bound);\r
- CopyMem (&Private->StationIp.v6, &Mode.Ia->IaAddress[0].IpAddress, sizeof (EFI_IPv6_ADDRESS));\r
- CopyMem (&PxeMode->StationIp.v6, &Private->StationIp.v6, sizeof (EFI_IPv6_ADDRESS));\r
-\r
- Status = PxeBcRegisterIp6Address (Private, &Private->StationIp.v6);\r
- if (EFI_ERROR (Status)) {\r
- Dhcp6->Stop (Dhcp6);\r
- return Status;\r
- }\r
-\r
- Status = PxeBcFlushStaionIp (Private, &Private->StationIp, NULL);\r
- if (EFI_ERROR (Status)) {\r
- PxeBcUnregisterIp6Address (Private);\r
- Dhcp6->Stop (Dhcp6);\r
- return Status;\r
- }\r
+ //\r
+ // DHCP6 doesn't have an option to specify the router address on the subnet, the only way to get the\r
+ // router address in IP6 is the router discovery mechanism (the RS and RA, which only be handled when\r
+ // the IP policy is Automatic). So we just hold the station IP address here and leave the IP policy as\r
+ // Automatic, until we get the server IP address. This could let IP6 driver finish the router discovery \r
+ // to find a valid router address.\r
+ //\r
+ CopyMem (&Private->TmpStationIp.v6, &Mode.Ia->IaAddress[0].IpAddress, sizeof (EFI_IPv6_ADDRESS));\r
\r
//\r
// Check the selected offer whether BINL retry is needed.\r
//\r
Status = PxeBcHandleDhcp6Offer (Private);\r
if (EFI_ERROR (Status)) {\r
- PxeBcUnregisterIp6Address (Private);\r
Dhcp6->Stop (Dhcp6);\r
return Status;\r
}\r
-\r
- AsciiPrint ("\n Station IP address is ");\r
-\r
- PxeBcShowIp6Addr (&Private->StationIp.v6);\r
-\r
+ \r
return EFI_SUCCESS;\r
}\r
-\r
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