| /** @file | |
| ARP driver functions. | |
| Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #include "ArpDriver.h" | |
| #include "ArpImpl.h" | |
| EFI_DRIVER_BINDING_PROTOCOL gArpDriverBinding = { | |
| ArpDriverBindingSupported, | |
| ArpDriverBindingStart, | |
| ArpDriverBindingStop, | |
| 0xa, | |
| NULL, | |
| NULL | |
| }; | |
| /** | |
| Create and initialize the arp service context data. | |
| @param[in] ImageHandle The image handle representing the loaded driver | |
| image. | |
| @param[in] ControllerHandle The controller handle the driver binds to. | |
| @param[in, out] ArpService Pointer to the buffer containing the arp service | |
| context data. | |
| @retval EFI_SUCCESS The arp service context is initialized. | |
| @retval EFI_UNSUPPORTED The underlayer Snp mode type is not ethernet. | |
| Failed to initialize the service context. | |
| @retval other Failed to initialize the arp service context. | |
| **/ | |
| EFI_STATUS | |
| ArpCreateService ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN OUT ARP_SERVICE_DATA *ArpService | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ASSERT (ArpService != NULL); | |
| ArpService->Signature = ARP_SERVICE_DATA_SIGNATURE; | |
| // | |
| // Init the lists. | |
| // | |
| InitializeListHead (&ArpService->ChildrenList); | |
| InitializeListHead (&ArpService->PendingRequestTable); | |
| InitializeListHead (&ArpService->DeniedCacheTable); | |
| InitializeListHead (&ArpService->ResolvedCacheTable); | |
| // | |
| // Init the servicebinding protocol members. | |
| // | |
| ArpService->ServiceBinding.CreateChild = ArpServiceBindingCreateChild; | |
| ArpService->ServiceBinding.DestroyChild = ArpServiceBindingDestroyChild; | |
| // | |
| // Save the handles. | |
| // | |
| ArpService->ImageHandle = ImageHandle; | |
| ArpService->ControllerHandle = ControllerHandle; | |
| // | |
| // Create a MNP child instance. | |
| // | |
| Status = NetLibCreateServiceChild ( | |
| ControllerHandle, | |
| ImageHandle, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| &ArpService->MnpChildHandle | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Open the MNP protocol. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ArpService->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| (VOID **)&ArpService->Mnp, | |
| ImageHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR_EXIT; | |
| } | |
| // | |
| // Get the underlayer Snp mode data. | |
| // | |
| Status = ArpService->Mnp->GetModeData (ArpService->Mnp, NULL, &ArpService->SnpMode); | |
| if ((Status != EFI_NOT_STARTED) && EFI_ERROR (Status)) { | |
| goto ERROR_EXIT; | |
| } | |
| if (ArpService->SnpMode.IfType != NET_IFTYPE_ETHERNET) { | |
| // | |
| // Only support the ethernet. | |
| // | |
| Status = EFI_UNSUPPORTED; | |
| goto ERROR_EXIT; | |
| } | |
| // | |
| // Set the Mnp config parameters. | |
| // | |
| ArpService->MnpConfigData.ReceivedQueueTimeoutValue = 0; | |
| ArpService->MnpConfigData.TransmitQueueTimeoutValue = 0; | |
| ArpService->MnpConfigData.ProtocolTypeFilter = ARP_ETHER_PROTO_TYPE; | |
| ArpService->MnpConfigData.EnableUnicastReceive = TRUE; | |
| ArpService->MnpConfigData.EnableMulticastReceive = FALSE; | |
| ArpService->MnpConfigData.EnableBroadcastReceive = TRUE; | |
| ArpService->MnpConfigData.EnablePromiscuousReceive = FALSE; | |
| ArpService->MnpConfigData.FlushQueuesOnReset = TRUE; | |
| ArpService->MnpConfigData.EnableReceiveTimestamps = FALSE; | |
| ArpService->MnpConfigData.DisableBackgroundPolling = FALSE; | |
| // | |
| // Configure the Mnp child. | |
| // | |
| Status = ArpService->Mnp->Configure (ArpService->Mnp, &ArpService->MnpConfigData); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR_EXIT; | |
| } | |
| // | |
| // Create the event used in the RxToken. | |
| // | |
| Status = gBS->CreateEvent ( | |
| EVT_NOTIFY_SIGNAL, | |
| TPL_NOTIFY, | |
| ArpOnFrameRcvd, | |
| ArpService, | |
| &ArpService->RxToken.Event | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR_EXIT; | |
| } | |
| // | |
| // Create the Arp heartbeat timer. | |
| // | |
| Status = gBS->CreateEvent ( | |
| EVT_NOTIFY_SIGNAL | EVT_TIMER, | |
| TPL_CALLBACK, | |
| ArpTimerHandler, | |
| ArpService, | |
| &ArpService->PeriodicTimer | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR_EXIT; | |
| } | |
| // | |
| // Start the heartbeat timer. | |
| // | |
| Status = gBS->SetTimer ( | |
| ArpService->PeriodicTimer, | |
| TimerPeriodic, | |
| ARP_PERIODIC_TIMER_INTERVAL | |
| ); | |
| ERROR_EXIT: | |
| return Status; | |
| } | |
| /** | |
| Clean the arp service context data. | |
| @param[in, out] ArpService Pointer to the buffer containing the arp service | |
| context data. | |
| @return None. | |
| **/ | |
| VOID | |
| ArpCleanService ( | |
| IN OUT ARP_SERVICE_DATA *ArpService | |
| ) | |
| { | |
| NET_CHECK_SIGNATURE (ArpService, ARP_SERVICE_DATA_SIGNATURE); | |
| if (ArpService->PeriodicTimer != NULL) { | |
| // | |
| // Cancel and close the PeriodicTimer. | |
| // | |
| gBS->SetTimer (ArpService->PeriodicTimer, TimerCancel, 0); | |
| gBS->CloseEvent (ArpService->PeriodicTimer); | |
| } | |
| if (ArpService->RxToken.Event != NULL) { | |
| // | |
| // Cancel the RxToken and close the event in the RxToken. | |
| // | |
| ArpService->Mnp->Cancel (ArpService->Mnp, NULL); | |
| gBS->CloseEvent (ArpService->RxToken.Event); | |
| } | |
| if (ArpService->Mnp != NULL) { | |
| // | |
| // Reset the Mnp child and close the Mnp protocol. | |
| // | |
| ArpService->Mnp->Configure (ArpService->Mnp, NULL); | |
| gBS->CloseProtocol ( | |
| ArpService->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| ArpService->ImageHandle, | |
| ArpService->ControllerHandle | |
| ); | |
| } | |
| if (ArpService->MnpChildHandle != NULL) { | |
| // | |
| // Destroy the mnp child. | |
| // | |
| NetLibDestroyServiceChild ( | |
| ArpService->ControllerHandle, | |
| ArpService->ImageHandle, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| ArpService->MnpChildHandle | |
| ); | |
| } | |
| } | |
| /** | |
| 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 | |
| ArpDestroyChildEntryInHandleBuffer ( | |
| IN LIST_ENTRY *Entry, | |
| IN VOID *Context | |
| ) | |
| { | |
| ARP_INSTANCE_DATA *Instance; | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| if ((Entry == NULL) || (Context == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Instance = NET_LIST_USER_STRUCT_S (Entry, ARP_INSTANCE_DATA, List, ARP_INSTANCE_DATA_SIGNATURE); | |
| ServiceBinding = (EFI_SERVICE_BINDING_PROTOCOL *)Context; | |
| return ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle); | |
| } | |
| /** | |
| Tests to see if this driver supports a given controller. | |
| If a child device is provided, it further tests to see if this driver supports | |
| creating a handle for the specified child device. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] ControllerHandle The handle of the controller to test. This handle | |
| must support a protocol interface that supplies | |
| an I/O abstraction to the driver. | |
| @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. | |
| This parameter is ignored by device drivers, | |
| and is optional for bus drivers. | |
| @retval EFI_SUCCESS The device specified by ControllerHandle and | |
| RemainingDevicePath is supported by the driver | |
| specified by This. | |
| @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and | |
| RemainingDevicePath is already being managed | |
| by the driver specified by This. | |
| @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and | |
| RemainingDevicePath is already being managed by | |
| a different driver or an application that | |
| requires exclusive access. Currently not implemented. | |
| @retval EFI_UNSUPPORTED The device specified by ControllerHandle and | |
| RemainingDevicePath is not supported by the | |
| driver specified by This. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| ArpDriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| // | |
| // Test to see if Arp SB is already installed. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiArpServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| if (Status == EFI_SUCCESS) { | |
| return EFI_ALREADY_STARTED; | |
| } | |
| // | |
| // Test to see if MNP SB is installed. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ControllerHandle, | |
| &gEfiManagedNetworkServiceBindingProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| return Status; | |
| } | |
| /** | |
| Start this driver on ControllerHandle. | |
| The Start() function is designed to be invoked from the EFI boot service ConnectController(). | |
| As a result, much of the error checking on the parameters to Start() has been | |
| moved into this common boot service. It is legal to call Start() from other locations, | |
| but the following calling restrictions must be followed or the system behavior | |
| will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE. | |
| 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally | |
| aligned EFI_DEVICE_PATH_PROTOCOL. | |
| 3. Prior to calling Start(), the Supported() function for the driver specified | |
| by This must have been called with the same calling parameters, and Supported() | |
| must have returned EFI_SUCCESS. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] ControllerHandle The handle of the controller to start. This handle | |
| must support a protocol interface that supplies | |
| an I/O abstraction to the driver. | |
| @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. | |
| This parameter is ignored by device drivers, | |
| and is optional for bus drivers. | |
| @retval EFI_SUCCESS The device was started. | |
| @retval EFI_DEVICE_ERROR The device could not be started due to a device error. | |
| Currently not implemented. | |
| @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of | |
| resources. | |
| @retval Others The driver failed to start the device. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| ArpDriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ARP_SERVICE_DATA *ArpService; | |
| // | |
| // Allocate a zero pool for ArpService. | |
| // | |
| ArpService = AllocateZeroPool (sizeof (ARP_SERVICE_DATA)); | |
| if (ArpService == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| // | |
| // Initialize the arp service context data. | |
| // | |
| Status = ArpCreateService (This->DriverBindingHandle, ControllerHandle, ArpService); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR; | |
| } | |
| // | |
| // Install the ARP service binding protocol. | |
| // | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| &ControllerHandle, | |
| &gEfiArpServiceBindingProtocolGuid, | |
| &ArpService->ServiceBinding, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR; | |
| } | |
| // | |
| // OK, start to receive arp packets from Mnp. | |
| // | |
| Status = ArpService->Mnp->Receive (ArpService->Mnp, &ArpService->RxToken); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR; | |
| } | |
| return Status; | |
| ERROR: | |
| // | |
| // On error, clean the arp service context data, and free the memory allocated. | |
| // | |
| ArpCleanService (ArpService); | |
| FreePool (ArpService); | |
| return Status; | |
| } | |
| /** | |
| Stop this driver on ControllerHandle. | |
| Release the control of this controller and remove the IScsi functions. The Stop() | |
| function is designed to be invoked from the EFI boot service DisconnectController(). | |
| As a result, much of the error checking on the parameters to Stop() has been moved | |
| into this common boot service. It is legal to call Stop() from other locations, | |
| but the following calling restrictions must be followed or the system behavior | |
| will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this | |
| same driver's Start() function. | |
| 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid | |
| EFI_HANDLE. In addition, all of these handles must have been created in this driver's | |
| Start() function, and the Start() function must have called OpenProtocol() on | |
| ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] ControllerHandle A handle to the device being stopped. The handle must | |
| support a bus specific I/O protocol for the driver | |
| to use to stop the device. | |
| @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer. | |
| Not used. | |
| @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL | |
| if NumberOfChildren is 0.Not used. | |
| @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 | |
| ArpDriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_HANDLE NicHandle; | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| ARP_SERVICE_DATA *ArpService; | |
| LIST_ENTRY *List; | |
| // | |
| // Get the NicHandle which the arp servicebinding is installed on. | |
| // | |
| NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid); | |
| if (NicHandle == NULL) { | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // Try to get the arp servicebinding protocol on the NicHandle. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| NicHandle, | |
| &gEfiArpServiceBindingProtocolGuid, | |
| (VOID **)&ServiceBinding, | |
| This->DriverBindingHandle, | |
| ControllerHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG ((DEBUG_ERROR, "ArpDriverBindingStop: Open ArpSb failed, %r.\n", Status)); | |
| return EFI_DEVICE_ERROR; | |
| } | |
| ArpService = ARP_SERVICE_DATA_FROM_THIS (ServiceBinding); | |
| if (NumberOfChildren != 0) { | |
| // | |
| // NumberOfChildren is not zero, destroy all the ARP children instances. | |
| // | |
| List = &ArpService->ChildrenList; | |
| Status = NetDestroyLinkList ( | |
| List, | |
| ArpDestroyChildEntryInHandleBuffer, | |
| ServiceBinding, | |
| NULL | |
| ); | |
| ASSERT (IsListEmpty (&ArpService->PendingRequestTable)); | |
| ASSERT (IsListEmpty (&ArpService->DeniedCacheTable)); | |
| ASSERT (IsListEmpty (&ArpService->ResolvedCacheTable)); | |
| } else if (IsListEmpty (&ArpService->ChildrenList)) { | |
| // | |
| // Uninstall the ARP ServiceBinding protocol. | |
| // | |
| gBS->UninstallMultipleProtocolInterfaces ( | |
| NicHandle, | |
| &gEfiArpServiceBindingProtocolGuid, | |
| &ArpService->ServiceBinding, | |
| NULL | |
| ); | |
| // | |
| // Clean the arp servicebinding context data and free the memory allocated. | |
| // | |
| ArpCleanService (ArpService); | |
| FreePool (ArpService); | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Creates a child handle and installs a protocol. | |
| The CreateChild() function installs a protocol on ChildHandle. | |
| If ChildHandle is a pointer to NULL, then a new handle is created and returned | |
| in ChildHandle. If ChildHandle is not a pointer to NULL, then the protocol | |
| installs on the existing ChildHandle. | |
| @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param ChildHandle Pointer to the handle of the child to create. If it is NULL, | |
| then a new handle is created. If it is a pointer to an existing | |
| UEFI handle, then the protocol is added to the existing UEFI handle. | |
| @retval EFI_SUCCESS The protocol was added to ChildHandle. | |
| @retval EFI_INVALID_PARAMETER ChildHandle is NULL. | |
| @retval EFI_OUT_OF_RESOURCES There are not enough resources available to create | |
| the child | |
| @retval other The child handle was not created | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| ArpServiceBindingCreateChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE *ChildHandle | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ARP_SERVICE_DATA *ArpService; | |
| ARP_INSTANCE_DATA *Instance; | |
| VOID *Mnp; | |
| EFI_TPL OldTpl; | |
| if ((This == NULL) || (ChildHandle == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| ArpService = ARP_SERVICE_DATA_FROM_THIS (This); | |
| // | |
| // Allocate memory for the instance context data. | |
| // | |
| Instance = AllocateZeroPool (sizeof (ARP_INSTANCE_DATA)); | |
| if (Instance == NULL) { | |
| DEBUG ((DEBUG_ERROR, "ArpSBCreateChild: Failed to allocate memory for Instance.\n")); | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| // | |
| // Init the instance context data. | |
| // | |
| ArpInitInstance (ArpService, Instance); | |
| // | |
| // Install the ARP protocol onto the ChildHandle. | |
| // | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| ChildHandle, | |
| &gEfiArpProtocolGuid, | |
| (VOID *)&Instance->ArpProto, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG ((DEBUG_ERROR, "ArpSBCreateChild: failed to install ARP protocol, %r.\n", Status)); | |
| FreePool (Instance); | |
| return Status; | |
| } | |
| // | |
| // Save the ChildHandle. | |
| // | |
| Instance->Handle = *ChildHandle; | |
| // | |
| // Open the Managed Network protocol BY_CHILD. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ArpService->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| (VOID **)&Mnp, | |
| gArpDriverBinding.DriverBindingHandle, | |
| Instance->Handle, | |
| EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto ERROR; | |
| } | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| // | |
| // Insert the instance into children list managed by the arp service context data. | |
| // | |
| InsertTailList (&ArpService->ChildrenList, &Instance->List); | |
| ArpService->ChildrenNumber++; | |
| gBS->RestoreTPL (OldTpl); | |
| ERROR: | |
| if (EFI_ERROR (Status)) { | |
| gBS->CloseProtocol ( | |
| ArpService->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| gArpDriverBinding.DriverBindingHandle, | |
| Instance->Handle | |
| ); | |
| gBS->UninstallMultipleProtocolInterfaces ( | |
| Instance->Handle, | |
| &gEfiArpProtocolGuid, | |
| &Instance->ArpProto, | |
| NULL | |
| ); | |
| // | |
| // Free the allocated memory. | |
| // | |
| FreePool (Instance); | |
| } | |
| return Status; | |
| } | |
| /** | |
| Destroys a child handle with a protocol installed on it. | |
| The DestroyChild() function does the opposite of CreateChild(). It removes a protocol | |
| that was installed by CreateChild() from ChildHandle. If the removed protocol is the | |
| last protocol on ChildHandle, then ChildHandle is destroyed. | |
| @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param ChildHandle Handle of the child to destroy | |
| @retval EFI_SUCCESS The protocol was removed from ChildHandle. | |
| @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is | |
| being removed. | |
| @retval EFI_INVALID_PARAMETER Child handle is NULL. | |
| @retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle | |
| because its services are being used. | |
| @retval other The child handle was not destroyed | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| ArpServiceBindingDestroyChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ChildHandle | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ARP_SERVICE_DATA *ArpService; | |
| ARP_INSTANCE_DATA *Instance; | |
| EFI_ARP_PROTOCOL *Arp; | |
| EFI_TPL OldTpl; | |
| if ((This == NULL) || (ChildHandle == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| ArpService = ARP_SERVICE_DATA_FROM_THIS (This); | |
| // | |
| // Get the arp protocol. | |
| // | |
| Status = gBS->OpenProtocol ( | |
| ChildHandle, | |
| &gEfiArpProtocolGuid, | |
| (VOID **)&Arp, | |
| ArpService->ImageHandle, | |
| ChildHandle, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| Instance = ARP_INSTANCE_DATA_FROM_THIS (Arp); | |
| if (Instance->InDestroy) { | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // Use the InDestroy as a flag to avoid re-entrance. | |
| // | |
| Instance->InDestroy = TRUE; | |
| // | |
| // Close the Managed Network protocol. | |
| // | |
| gBS->CloseProtocol ( | |
| ArpService->MnpChildHandle, | |
| &gEfiManagedNetworkProtocolGuid, | |
| gArpDriverBinding.DriverBindingHandle, | |
| ChildHandle | |
| ); | |
| // | |
| // Uninstall the ARP protocol. | |
| // | |
| Status = gBS->UninstallMultipleProtocolInterfaces ( | |
| ChildHandle, | |
| &gEfiArpProtocolGuid, | |
| &Instance->ArpProto, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| DEBUG (( | |
| DEBUG_ERROR, | |
| "ArpSBDestroyChild: Failed to uninstall the arp protocol, %r.\n", | |
| Status | |
| )); | |
| Instance->InDestroy = FALSE; | |
| return Status; | |
| } | |
| OldTpl = gBS->RaiseTPL (TPL_CALLBACK); | |
| if (Instance->Configured) { | |
| // | |
| // Delete the related cache entry. | |
| // | |
| ArpDeleteCacheEntry (Instance, FALSE, NULL, TRUE); | |
| // | |
| // Reset the instance configuration. | |
| // | |
| ArpConfigureInstance (Instance, NULL); | |
| } | |
| // | |
| // Remove this instance from the ChildrenList. | |
| // | |
| RemoveEntryList (&Instance->List); | |
| ArpService->ChildrenNumber--; | |
| gBS->RestoreTPL (OldTpl); | |
| FreePool (Instance); | |
| return Status; | |
| } | |
| /** | |
| The entry point for Arp driver which installs the driver binding and component name | |
| protocol on its ImageHandle. | |
| @param[in] ImageHandle The image handle of the driver. | |
| @param[in] SystemTable The system table. | |
| @retval EFI_SUCCESS if the driver binding and component name protocols | |
| are successfully | |
| @retval Others Failed to install the protocols. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| ArpDriverEntryPoint ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| { | |
| return EfiLibInstallDriverBindingComponentName2 ( | |
| ImageHandle, | |
| SystemTable, | |
| &gArpDriverBinding, | |
| ImageHandle, | |
| &gArpComponentName, | |
| &gArpComponentName2 | |
| ); | |
| } |