| /** @file | |
| The driver binding and service binding protocol for IP6 driver. | |
| Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR> | |
| This program and the accompanying materials | |
| are licensed and made available under the terms and conditions of the BSD License | |
| which accompanies this distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php. | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| **/ | |
| #include "Ip6Impl.h" | |
| EFI_DRIVER_BINDING_PROTOCOL gIp6DriverBinding = { | |
| Ip6DriverBindingSupported, | |
| Ip6DriverBindingStart, | |
| Ip6DriverBindingStop, | |
| 0xa, | |
| NULL, | |
| NULL | |
| }; | |
| /** | |
| This is the declaration of an EFI image entry point. This entry point is | |
| the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including | |
| both device drivers and bus drivers. | |
| The entry point for IP6 driver which installs the driver | |
| binding and component name protocol on its image. | |
| @param[in] ImageHandle The firmware allocated handle for the UEFI image. | |
| @param[in] SystemTable A pointer to the EFI System Table. | |
| @retval EFI_SUCCESS The operation completed successfully. | |
| @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6DriverEntryPoint ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| { | |
| return EfiLibInstallDriverBindingComponentName2 ( | |
| ImageHandle, | |
| SystemTable, | |
| &gIp6DriverBinding, | |
| ImageHandle, | |
| &gIp6ComponentName, | |
| &gIp6ComponentName2 | |
| ); | |
| } | |
| /** | |
| Test to see if this driver supports ControllerHandle. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] ControllerHandle Handle of device to test. | |
| @param[in] RemainingDevicePath Optional parameter use to pick a specific child | |
| device to start. | |
| @retval EFI_SUCCESS This driver supports this device. | |
| @retval EFI_ALREADY_STARTED This driver is already running on this device. | |
| @retval other This driver does not support this device. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6DriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| // | |
| // Test for the MNP service binding Protocol | |
| // | |
| return gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| } | |
| /** | |
| Clean up an IP6 service binding instance. It releases all | |
| the resource allocated by the instance. The instance may be | |
| partly initialized, or partly destroyed. If a resource is | |
| destroyed, it is marked as that in case the destroy failed and | |
| being called again later. | |
| @param[in] IpSb The IP6 service binding instance to clean up. | |
| @retval EFI_SUCCESS The resource used by the instance are cleaned up. | |
| @retval Others Failed to clean up some of the resources. | |
| **/ | |
| EFI_STATUS | |
| Ip6CleanService ( | |
| IN IP6_SERVICE *IpSb | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_IPv6_ADDRESS AllNodes; | |
| IP6_NEIGHBOR_ENTRY *NeighborCache; | |
| Ip6ConfigCleanInstance (&IpSb->Ip6ConfigInstance); | |
| if (!IpSb->LinkLocalDadFail) { | |
| // | |
| // Leave link-scope all-nodes multicast address (FF02::1) | |
| // | |
| Ip6SetToAllNodeMulticast (FALSE, IP6_LINK_LOCAL_SCOPE, &AllNodes); | |
| Status = Ip6LeaveGroup (IpSb, &AllNodes); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| } | |
| if (IpSb->DefaultInterface != NULL) { | |
| Ip6CleanInterface (IpSb->DefaultInterface, NULL); | |
| IpSb->DefaultInterface = NULL; | |
| } | |
| Ip6CleanDefaultRouterList (IpSb); | |
| Ip6CleanPrefixListTable (IpSb, &IpSb->OnlinkPrefix); | |
| Ip6CleanPrefixListTable (IpSb, &IpSb->AutonomousPrefix); | |
| if (IpSb->RouteTable != NULL) { | |
| Ip6CleanRouteTable (IpSb->RouteTable); | |
| IpSb->RouteTable = NULL; | |
| } | |
| if (IpSb->InterfaceId != NULL) { | |
| FreePool (IpSb->InterfaceId); | |
| } | |
| IpSb->InterfaceId = NULL; | |
| Ip6CleanAssembleTable (&IpSb->Assemble); | |
| if (IpSb->MnpChildHandle != NULL) { | |
| if (IpSb->Mnp != NULL) { | |
| IpSb->Mnp->Cancel (IpSb->Mnp, NULL); | |
| IpSb->Mnp->Configure (IpSb->Mnp, NULL); | |
| gBS->CloseProtocol ( | |
| IpSb->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| IpSb->Image, | |
| IpSb->Controller | |
| ); | |
| IpSb->Mnp = NULL; | |
| } | |
| NetLibDestroyServiceChild ( | |
| IpSb->Controller, | |
| IpSb->Image, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| IpSb->MnpChildHandle | |
| ); | |
| IpSb->MnpChildHandle = NULL; | |
| } | |
| if (IpSb->RecvRequest.MnpToken.Event != NULL) { | |
| gBS->CloseEvent (IpSb->RecvRequest.MnpToken.Event); | |
| } | |
| if (IpSb->Timer != NULL) { | |
| gBS->SetTimer (IpSb->Timer, TimerCancel, 0); | |
| gBS->CloseEvent (IpSb->Timer); | |
| IpSb->Timer = NULL; | |
| } | |
| if (IpSb->FasterTimer != NULL) { | |
| gBS->SetTimer (IpSb->FasterTimer, TimerCancel, 0); | |
| gBS->CloseEvent (IpSb->FasterTimer); | |
| IpSb->FasterTimer = NULL; | |
| } | |
| // | |
| // Free the Neighbor Discovery resources | |
| // | |
| while (!IsListEmpty (&IpSb->NeighborTable)) { | |
| NeighborCache = NET_LIST_HEAD (&IpSb->NeighborTable, IP6_NEIGHBOR_ENTRY, Link); | |
| Ip6FreeNeighborEntry (IpSb, NeighborCache, FALSE, TRUE, EFI_SUCCESS, NULL, NULL); | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Create a new IP6 driver service binding protocol. | |
| @param[in] Controller The controller that has MNP service binding | |
| installed. | |
| @param[in] ImageHandle The IP6 driver's image handle. | |
| @param[out] Service The variable to receive the newly created IP6 | |
| service. | |
| @retval EFI_OUT_OF_RESOURCES Failed to allocate some resources. | |
| @retval EFI_SUCCESS A new IP6 service binding private is created. | |
| **/ | |
| EFI_STATUS | |
| Ip6CreateService ( | |
| IN EFI_HANDLE Controller, | |
| IN EFI_HANDLE ImageHandle, | |
| OUT IP6_SERVICE **Service | |
| ) | |
| { | |
| IP6_SERVICE *IpSb; | |
| EFI_STATUS Status; | |
| EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken; | |
| EFI_MANAGED_NETWORK_CONFIG_DATA *Config; | |
| IP6_CONFIG_DATA_ITEM *DataItem; | |
| ASSERT (Service != NULL); | |
| *Service = NULL; | |
| // | |
| // allocate a service private data then initialize all the filed to | |
| // empty resources, so if any thing goes wrong when allocating | |
| // resources, Ip6CleanService can be called to clean it up. | |
| // | |
| IpSb = AllocateZeroPool (sizeof (IP6_SERVICE)); | |
| if (IpSb == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| IpSb->Signature = IP6_SERVICE_SIGNATURE; | |
| IpSb->ServiceBinding.CreateChild = Ip6ServiceBindingCreateChild; | |
| IpSb->ServiceBinding.DestroyChild = Ip6ServiceBindingDestroyChild; | |
| IpSb->State = IP6_SERVICE_UNSTARTED; | |
| IpSb->NumChildren = 0; | |
| InitializeListHead (&IpSb->Children); | |
| InitializeListHead (&IpSb->Interfaces); | |
| IpSb->DefaultInterface = NULL; | |
| IpSb->RouteTable = NULL; | |
| IpSb->RecvRequest.Signature = IP6_LINK_RX_SIGNATURE; | |
| IpSb->RecvRequest.CallBack = NULL; | |
| IpSb->RecvRequest.Context = NULL; | |
| MnpToken = &IpSb->RecvRequest.MnpToken; | |
| MnpToken->Event = NULL; | |
| MnpToken->Status = EFI_NOT_READY; | |
| MnpToken->Packet.RxData = NULL; | |
| Ip6CreateAssembleTable (&IpSb->Assemble); | |
| IpSb->MldCtrl.Mldv1QuerySeen = 0; | |
| InitializeListHead (&IpSb->MldCtrl.Groups); | |
| ZeroMem (&IpSb->LinkLocalAddr, sizeof (EFI_IPv6_ADDRESS)); | |
| IpSb->LinkLocalOk = FALSE; | |
| IpSb->LinkLocalDadFail = FALSE; | |
| IpSb->Dhcp6NeedStart = FALSE; | |
| IpSb->Dhcp6NeedInfoRequest = FALSE; | |
| IpSb->CurHopLimit = IP6_HOP_LIMIT; | |
| IpSb->LinkMTU = IP6_MIN_LINK_MTU; | |
| IpSb->BaseReachableTime = IP6_REACHABLE_TIME; | |
| Ip6UpdateReachableTime (IpSb); | |
| // | |
| // RFC4861 RETRANS_TIMER: 1,000 milliseconds | |
| // | |
| IpSb->RetransTimer = IP6_RETRANS_TIMER; | |
| IpSb->RoundRobin = 0; | |
| InitializeListHead (&IpSb->NeighborTable); | |
| InitializeListHead (&IpSb->DefaultRouterList); | |
| InitializeListHead (&IpSb->OnlinkPrefix); | |
| InitializeListHead (&IpSb->AutonomousPrefix); | |
| IpSb->InterfaceIdLen = IP6_IF_ID_LEN; | |
| IpSb->InterfaceId = NULL; | |
| IpSb->RouterAdvertiseReceived = FALSE; | |
| IpSb->SolicitTimer = IP6_MAX_RTR_SOLICITATIONS; | |
| IpSb->Ticks = 0; | |
| IpSb->Image = ImageHandle; | |
| IpSb->Controller = Controller; | |
| IpSb->MnpChildHandle = NULL; | |
| IpSb->Mnp = NULL; | |
| Config = &IpSb->MnpConfigData; | |
| Config->ReceivedQueueTimeoutValue = 0; | |
| Config->TransmitQueueTimeoutValue = 0; | |
| Config->ProtocolTypeFilter = IP6_ETHER_PROTO; | |
| Config->EnableUnicastReceive = TRUE; | |
| Config->EnableMulticastReceive = TRUE; | |
| Config->EnableBroadcastReceive = TRUE; | |
| Config->EnablePromiscuousReceive = FALSE; | |
| Config->FlushQueuesOnReset = TRUE; | |
| Config->EnableReceiveTimestamps = FALSE; | |
| Config->DisableBackgroundPolling = FALSE; | |
| ZeroMem (&IpSb->SnpMode, sizeof (EFI_SIMPLE_NETWORK_MODE)); | |
| IpSb->Timer = NULL; | |
| IpSb->FasterTimer = NULL; | |
| ZeroMem (&IpSb->Ip6ConfigInstance, sizeof (IP6_CONFIG_INSTANCE)); | |
| IpSb->MacString = NULL; | |
| // | |
| // Create various resources. First create the route table, timer | |
| // event, MNP token event and MNP child. | |
| // | |
| IpSb->RouteTable = Ip6CreateRouteTable (); | |
| if (IpSb->RouteTable == NULL) { | |
| Status = EFI_OUT_OF_RESOURCES; | |
| goto ON_ERROR; | |
| } | |
| Status = gBS->CreateEvent ( | |
| EVT_NOTIFY_SIGNAL | EVT_TIMER, | |
| TPL_CALLBACK, | |
| Ip6TimerTicking, | |
| IpSb, | |
| &IpSb->Timer | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = gBS->CreateEvent ( | |
| EVT_NOTIFY_SIGNAL | EVT_TIMER, | |
| TPL_CALLBACK, | |
| Ip6NdFasterTimerTicking, | |
| IpSb, | |
| &IpSb->FasterTimer | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = NetLibCreateServiceChild ( | |
| Controller, | |
| ImageHandle, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| &IpSb->MnpChildHandle | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = gBS->OpenProtocol ( | |
| IpSb->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| (VOID **) (&IpSb->Mnp), | |
| ImageHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = Ip6ServiceConfigMnp (IpSb, TRUE); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = IpSb->Mnp->GetModeData (IpSb->Mnp, NULL, &IpSb->SnpMode); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| IpSb->MaxPacketSize = IP6_MIN_LINK_MTU - sizeof (EFI_IP6_HEADER); | |
| if (NetLibGetVlanId (IpSb->Controller) != 0) { | |
| // | |
| // This is a VLAN device, reduce MTU by VLAN tag length | |
| // | |
| IpSb->MaxPacketSize -= NET_VLAN_TAG_LEN; | |
| } | |
| IpSb->OldMaxPacketSize = IpSb->MaxPacketSize; | |
| // | |
| // Currently only ETHERNET is supported in IPv6 stack, since | |
| // link local address requires an IEEE 802 48-bit MACs for | |
| // EUI-64 format interface identifier mapping. | |
| // | |
| if (IpSb->SnpMode.IfType != NET_IFTYPE_ETHERNET) { | |
| Status = EFI_UNSUPPORTED; | |
| goto ON_ERROR; | |
| } | |
| Status = Ip6InitMld (IpSb); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = NetLibGetMacString (IpSb->Controller, IpSb->Image, &IpSb->MacString); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = Ip6ConfigInitInstance (&IpSb->Ip6ConfigInstance); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| IpSb->DefaultInterface = Ip6CreateInterface (IpSb, TRUE); | |
| if (IpSb->DefaultInterface == NULL) { | |
| Status = EFI_DEVICE_ERROR; | |
| goto ON_ERROR; | |
| } | |
| Status = gBS->CreateEvent ( | |
| EVT_NOTIFY_SIGNAL, | |
| TPL_NOTIFY, | |
| Ip6OnFrameReceived, | |
| &IpSb->RecvRequest, | |
| &MnpToken->Event | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| // | |
| // If there is any manual address, set it. | |
| // | |
| DataItem = &IpSb->Ip6ConfigInstance.DataItem[Ip6ConfigDataTypeManualAddress]; | |
| if (DataItem->Data.Ptr != NULL) { | |
| DataItem->SetData ( | |
| &IpSb->Ip6ConfigInstance, | |
| DataItem->DataSize, | |
| DataItem->Data.Ptr | |
| ); | |
| } | |
| // | |
| // If there is any gateway address, set it. | |
| // | |
| DataItem = &IpSb->Ip6ConfigInstance.DataItem[Ip6ConfigDataTypeGateway]; | |
| if (DataItem->Data.Ptr != NULL) { | |
| DataItem->SetData ( | |
| &IpSb->Ip6ConfigInstance, | |
| DataItem->DataSize, | |
| DataItem->Data.Ptr | |
| ); | |
| } | |
| InsertHeadList (&IpSb->Interfaces, &IpSb->DefaultInterface->Link); | |
| *Service = IpSb; | |
| return EFI_SUCCESS; | |
| ON_ERROR: | |
| Ip6CleanService (IpSb); | |
| FreePool (IpSb); | |
| return Status; | |
| } | |
| /** | |
| Start this driver on ControllerHandle. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] ControllerHandle Handle of device to bind driver to. | |
| @param[in] RemainingDevicePath Optional parameter used to pick a specific child | |
| device to start. | |
| @retval EFI_SUCCES This driver is added to ControllerHandle. | |
| @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle. | |
| @retval other This driver does not support this device. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6DriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| IP6_SERVICE *IpSb; | |
| EFI_STATUS Status; | |
| // | |
| // Test for the Ip6 service binding protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiIp6ServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| if (Status == EFI_SUCCESS) { | |
| return EFI_ALREADY_STARTED; | |
| } | |
| Status = Ip6CreateService (ControllerHandle, This->DriverBindingHandle, &IpSb); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| ASSERT (IpSb != NULL); | |
| // | |
| // Install the Ip6ServiceBinding Protocol onto ControlerHandle | |
| // | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| &ControllerHandle, | |
| &gEfiIp6ServiceBindingProtocolGuid, | |
| &IpSb->ServiceBinding, | |
| &gEfiIp6ConfigProtocolGuid, | |
| &IpSb->Ip6ConfigInstance.Ip6Config, | |
| NULL | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| // | |
| // ready to go: start the receiving and timer | |
| // | |
| Status = Ip6ReceiveFrame (Ip6AcceptFrame, IpSb); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| // | |
| // The timer expires every 100 (IP6_TIMER_INTERVAL_IN_MS) milliseconds. | |
| // | |
| Status = gBS->SetTimer ( | |
| IpSb->FasterTimer, | |
| TimerPeriodic, | |
| TICKS_PER_MS * IP6_TIMER_INTERVAL_IN_MS | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| // | |
| // The timer expires every 1000 (IP6_ONE_SECOND_IN_MS) milliseconds. | |
| // | |
| Status = gBS->SetTimer ( | |
| IpSb->Timer, | |
| TimerPeriodic, | |
| TICKS_PER_MS * IP6_ONE_SECOND_IN_MS | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Initialize the IP6 ID | |
| // | |
| mIp6Id = NET_RANDOM (NetRandomInitSeed ()); | |
| return EFI_SUCCESS; | |
| } | |
| ON_ERROR: | |
| Ip6CleanService (IpSb); | |
| FreePool (IpSb); | |
| return Status; | |
| } | |
| /** | |
| Callback function which provided by user to remove one node in NetDestroyLinkList process. | |
| @param[in] Entry The entry to be removed. | |
| @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList. | |
| @retval EFI_SUCCESS The entry has been removed successfully. | |
| @retval Others Fail to remove the entry. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6DestroyChildEntryInHandleBuffer ( | |
| IN LIST_ENTRY *Entry, | |
| IN VOID *Context | |
| ) | |
| { | |
| IP6_PROTOCOL *IpInstance; | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| UINTN NumberOfChildren; | |
| EFI_HANDLE *ChildHandleBuffer; | |
| if (Entry == NULL || Context == NULL) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| IpInstance = NET_LIST_USER_STRUCT_S (Entry, IP6_PROTOCOL, Link, IP6_PROTOCOL_SIGNATURE); | |
| ServiceBinding = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ServiceBinding; | |
| NumberOfChildren = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->NumberOfChildren; | |
| ChildHandleBuffer = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ChildHandleBuffer; | |
| if (!NetIsInHandleBuffer (IpInstance->Handle, NumberOfChildren, ChildHandleBuffer)) { | |
| return EFI_SUCCESS; | |
| } | |
| return ServiceBinding->DestroyChild (ServiceBinding, IpInstance->Handle); | |
| } | |
| /** | |
| Stop this driver on ControllerHandle. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] ControllerHandle Handle of device to stop driver on. | |
| @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number | |
| of children is zero, stop the entire bus driver. | |
| @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL | |
| if NumberOfChildren is 0. | |
| @retval EFI_SUCCESS The device was stopped. | |
| @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6DriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer OPTIONAL | |
| ) | |
| { | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| IP6_SERVICE *IpSb; | |
| EFI_HANDLE NicHandle; | |
| EFI_STATUS Status; | |
| LIST_ENTRY *List; | |
| INTN State; | |
| BOOLEAN IsDhcp6; | |
| IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT Context; | |
| IsDhcp6 = FALSE; | |
| NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid); | |
| if (NicHandle == NULL) { | |
| NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp6ProtocolGuid); | |
| if (NicHandle != NULL) { | |
| IsDhcp6 = TRUE; | |
| } else { | |
| return EFI_SUCCESS; | |
| } | |
| } | |
| Status = gBS->OpenProtocol ( | |
| NicHandle, | |
| &gEfiIp6ServiceBindingProtocolGuid, | |
| (VOID **) &ServiceBinding, | |
| This->DriverBindingHandle, | |
| NicHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return EFI_DEVICE_ERROR; | |
| } | |
| IpSb = IP6_SERVICE_FROM_PROTOCOL (ServiceBinding); | |
| if (IsDhcp6) { | |
| Status = Ip6ConfigDestroyDhcp6 (&IpSb->Ip6ConfigInstance); | |
| gBS->CloseEvent (IpSb->Ip6ConfigInstance.Dhcp6Event); | |
| IpSb->Ip6ConfigInstance.Dhcp6Event = NULL; | |
| } else if (NumberOfChildren != 0) { | |
| // | |
| // NumberOfChildren is not zero, destroy the IP6 children instances in ChildHandleBuffer. | |
| // | |
| List = &IpSb->Children; | |
| Context.ServiceBinding = ServiceBinding; | |
| Context.NumberOfChildren = NumberOfChildren; | |
| Context.ChildHandleBuffer = ChildHandleBuffer; | |
| Status = NetDestroyLinkList ( | |
| List, | |
| Ip6DestroyChildEntryInHandleBuffer, | |
| &Context, | |
| NULL | |
| ); | |
| } else if (IsListEmpty (&IpSb->Children)) { | |
| State = IpSb->State; | |
| IpSb->State = IP6_SERVICE_DESTROY; | |
| Status = Ip6CleanService (IpSb); | |
| if (EFI_ERROR (Status)) { | |
| IpSb->State = State; | |
| goto Exit; | |
| } | |
| Status = gBS->UninstallMultipleProtocolInterfaces ( | |
| NicHandle, | |
| &gEfiIp6ServiceBindingProtocolGuid, | |
| ServiceBinding, | |
| &gEfiIp6ConfigProtocolGuid, | |
| &IpSb->Ip6ConfigInstance.Ip6Config, | |
| NULL | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| FreePool (IpSb); | |
| Status = EFI_SUCCESS; | |
| } | |
| Exit: | |
| return Status; | |
| } | |
| /** | |
| Creates a child handle with a set of I/O services. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] ChildHandle Pointer to the handle of the child to create. If | |
| it is NULL, then a new handle is created. If it | |
| is not NULL, then the I/O services are added to | |
| the existing child handle. | |
| @retval EFI_SUCCES The child handle was created with the I/O services. | |
| @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create | |
| the child. | |
| @retval other The child handle was not created. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6ServiceBindingCreateChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE *ChildHandle | |
| ) | |
| { | |
| IP6_SERVICE *IpSb; | |
| IP6_PROTOCOL *IpInstance; | |
| EFI_TPL OldTpl; | |
| EFI_STATUS Status; | |
| VOID *Mnp; | |
| if ((This == NULL) || (ChildHandle == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| IpSb = IP6_SERVICE_FROM_PROTOCOL (This); | |
| if (IpSb->LinkLocalDadFail) { | |
| return EFI_DEVICE_ERROR; | |
| } | |
| IpInstance = AllocatePool (sizeof (IP6_PROTOCOL)); | |
| if (IpInstance == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| Ip6InitProtocol (IpSb, IpInstance); | |
| // | |
| // Install Ip6 onto ChildHandle | |
| // | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| ChildHandle, | |
| &gEfiIp6ProtocolGuid, | |
| &IpInstance->Ip6Proto, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| IpInstance->Handle = *ChildHandle; | |
| // | |
| // Open the Managed Network protocol BY_CHILD. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| IpSb->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| (VOID **) &Mnp, | |
| gIp6DriverBinding.DriverBindingHandle, | |
| IpInstance->Handle, | |
| EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| gBS->UninstallMultipleProtocolInterfaces ( | |
| ChildHandle, | |
| &gEfiIp6ProtocolGuid, | |
| &IpInstance->Ip6Proto, | |
| NULL | |
| ); | |
| goto ON_ERROR; | |
| } | |
| // | |
| // Insert it into the service binding instance. | |
| // | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| InsertTailList (&IpSb->Children, &IpInstance->Link); | |
| IpSb->NumChildren++; | |
| gBS->RestoreTPL (OldTpl); | |
| ON_ERROR: | |
| if (EFI_ERROR (Status)) { | |
| Ip6CleanProtocol (IpInstance); | |
| FreePool (IpInstance); | |
| } | |
| return Status; | |
| } | |
| /** | |
| Destroys a child handle with a set of I/O services. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] ChildHandle Handle of the child to destroy. | |
| @retval EFI_SUCCES The I/O services were removed from the child | |
| handle. | |
| @retval EFI_UNSUPPORTED The child handle does not support the I/O services | |
| that are being removed. | |
| @retval EFI_INVALID_PARAMETER Child handle is NULL. | |
| @retval EFI_ACCESS_DENIED The child handle could not be destroyed because | |
| its I/O services are being used. | |
| @retval other The child handle was not destroyed. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| Ip6ServiceBindingDestroyChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ChildHandle | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| IP6_SERVICE *IpSb; | |
| IP6_PROTOCOL *IpInstance; | |
| EFI_IP6_PROTOCOL *Ip6; | |
| EFI_TPL OldTpl; | |
| if ((This == NULL) || (ChildHandle == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| // | |
| // Retrieve the private context data structures | |
| // | |
| IpSb = IP6_SERVICE_FROM_PROTOCOL (This); | |
| Status = gBS->OpenProtocol ( | |
| ChildHandle, | |
| &gEfiIp6ProtocolGuid, | |
| (VOID **) &Ip6, | |
| gIp6DriverBinding.DriverBindingHandle, | |
| ChildHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| IpInstance = IP6_INSTANCE_FROM_PROTOCOL (Ip6); | |
| if (IpInstance->Service != IpSb) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| // | |
| // A child can be destroyed more than once. For example, | |
| // Ip6DriverBindingStop will destroy all of its children. | |
| // when UDP driver is being stopped, it will destroy all | |
| // the IP child it opens. | |
| // | |
| if (IpInstance->InDestroy) { | |
| gBS->RestoreTPL (OldTpl); | |
| return EFI_SUCCESS; | |
| } | |
| IpInstance->InDestroy = TRUE; | |
| // | |
| // Close the Managed Network protocol. | |
| // | |
| gBS->CloseProtocol ( | |
| IpSb->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| gIp6DriverBinding.DriverBindingHandle, | |
| ChildHandle | |
| ); | |
| // | |
| // Uninstall the IP6 protocol first. Many thing happens during | |
| // this: | |
| // 1. The consumer of the IP6 protocol will be stopped if it | |
| // opens the protocol BY_DRIVER. For eaxmple, if MNP driver is | |
| // stopped, IP driver's stop function will be called, and uninstall | |
| // EFI_IP6_PROTOCOL will trigger the UDP's stop function. This | |
| // makes it possible to create the network stack bottom up, and | |
| // stop it top down. | |
| // 2. the upper layer will recycle the received packet. The recycle | |
| // event's TPL is higher than this function. The recycle events | |
| // will be called back before preceeding. If any packets not recycled, | |
| // that means there is a resource leak. | |
| // | |
| gBS->RestoreTPL (OldTpl); | |
| Status = gBS->UninstallProtocolInterface ( | |
| ChildHandle, | |
| &gEfiIp6ProtocolGuid, | |
| &IpInstance->Ip6Proto | |
| ); | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| if (EFI_ERROR (Status)) { | |
| goto ON_ERROR; | |
| } | |
| Status = Ip6CleanProtocol (IpInstance); | |
| if (EFI_ERROR (Status)) { | |
| gBS->InstallMultipleProtocolInterfaces ( | |
| &ChildHandle, | |
| &gEfiIp6ProtocolGuid, | |
| Ip6, | |
| NULL | |
| ); | |
| goto ON_ERROR; | |
| } | |
| RemoveEntryList (&IpInstance->Link); | |
| ASSERT (IpSb->NumChildren > 0); | |
| IpSb->NumChildren--; | |
| gBS->RestoreTPL (OldTpl); | |
| FreePool (IpInstance); | |
| return EFI_SUCCESS; | |
| ON_ERROR: | |
| gBS->RestoreTPL (OldTpl); | |
| return Status; | |
| } |