| /** @file | |
| The header files of the driver binding and service binding protocol for DnsDxe driver. | |
| Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR> | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #ifndef _DNS_DRIVER_H_ | |
| #define _DNS_DRIVER_H_ | |
| #include <Protocol/DriverBinding.h> | |
| #include <Protocol/ServiceBinding.h> | |
| /// | |
| /// Dns service block | |
| /// | |
| typedef struct _DNS_DRIVER_DATA DNS_DRIVER_DATA; | |
| /// | |
| /// Dns service block | |
| /// | |
| typedef struct _DNS_SERVICE DNS_SERVICE; | |
| /// | |
| /// Dns instance block | |
| /// | |
| typedef struct _DNS_INSTANCE DNS_INSTANCE; | |
| #define DNS_SERVICE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'S') | |
| #define DNS_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'I') | |
| struct _DNS_DRIVER_DATA { | |
| EFI_EVENT Timer; /// Ticking timer for DNS cache update. | |
| LIST_ENTRY Dns4CacheList; | |
| LIST_ENTRY Dns4ServerList; | |
| LIST_ENTRY Dns6CacheList; | |
| LIST_ENTRY Dns6ServerList; | |
| }; | |
| struct _DNS_SERVICE { | |
| UINT32 Signature; | |
| EFI_SERVICE_BINDING_PROTOCOL ServiceBinding; | |
| UINT16 Dns4ChildrenNum; | |
| LIST_ENTRY Dns4ChildrenList; | |
| UINT16 Dns6ChildrenNum; | |
| LIST_ENTRY Dns6ChildrenList; | |
| EFI_HANDLE ControllerHandle; | |
| EFI_HANDLE ImageHandle; | |
| EFI_EVENT TimerToGetMap; | |
| EFI_EVENT Timer; /// Ticking timer for packet retransmission. | |
| UINT8 IpVersion; | |
| UDP_IO *ConnectUdp; | |
| }; | |
| struct _DNS_INSTANCE { | |
| UINT32 Signature; | |
| LIST_ENTRY Link; | |
| EFI_DNS4_PROTOCOL Dns4; | |
| EFI_DNS6_PROTOCOL Dns6; | |
| INTN State; | |
| BOOLEAN InDestroy; | |
| DNS_SERVICE *Service; | |
| EFI_HANDLE ChildHandle; | |
| EFI_DNS4_CONFIG_DATA Dns4CfgData; | |
| EFI_DNS6_CONFIG_DATA Dns6CfgData; | |
| EFI_IP_ADDRESS SessionDnsServer; | |
| NET_MAP Dns4TxTokens; | |
| NET_MAP Dns6TxTokens; | |
| UDP_IO *UdpIo; | |
| }; | |
| typedef struct { | |
| EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding; | |
| UINTN NumberOfChildren; | |
| EFI_HANDLE *ChildHandleBuffer; | |
| } DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT; | |
| extern DNS_DRIVER_DATA *mDriverData; | |
| #define DNS_SERVICE_FROM_THIS(a) \ | |
| CR (a, DNS_SERVICE, ServiceBinding, DNS_SERVICE_SIGNATURE) | |
| #define DNS_INSTANCE_FROM_THIS_PROTOCOL4(a) \ | |
| CR (a, DNS_INSTANCE, Dns4, DNS_INSTANCE_SIGNATURE) | |
| #define DNS_INSTANCE_FROM_THIS_PROTOCOL6(a) \ | |
| CR (a, DNS_INSTANCE, Dns6, DNS_INSTANCE_SIGNATURE) | |
| /** | |
| Destroy the DNS instance and recycle the resources. | |
| @param[in] Instance The pointer to the DNS instance. | |
| **/ | |
| VOID | |
| DnsDestroyInstance ( | |
| IN DNS_INSTANCE *Instance | |
| ); | |
| /** | |
| Create the DNS instance and initialize it. | |
| @param[in] Service The pointer to the DNS service. | |
| @param[out] Instance The pointer to the DNS instance. | |
| @retval EFI_OUT_OF_RESOURCES Failed to allocate resources. | |
| @retval EFI_SUCCESS The DNS instance is created. | |
| **/ | |
| EFI_STATUS | |
| DnsCreateInstance ( | |
| IN DNS_SERVICE *Service, | |
| OUT DNS_INSTANCE **Instance | |
| ); | |
| /** | |
| 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 | |
| DnsDestroyChildEntryInHandleBuffer ( | |
| IN LIST_ENTRY *Entry, | |
| IN VOID *Context | |
| ); | |
| /** | |
| Config a NULL UDP that is used to keep the connection between UDP and DNS. | |
| Just leave the Udp child unconfigured. When UDP is unloaded, | |
| DNS will be informed with DriverBinding Stop. | |
| @param UdpIo The UDP_IO to configure | |
| @param Context The opaque parameter to the callback | |
| @retval EFI_SUCCESS It always return EFI_SUCCESS directly. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| DnsConfigNullUdp ( | |
| IN UDP_IO *UdpIo, | |
| IN VOID *Context | |
| ); | |
| /** | |
| Release all the resource used the DNS service binding instance. | |
| @param DnsSb The Dns service binding instance. | |
| **/ | |
| VOID | |
| DnsDestroyService ( | |
| IN DNS_SERVICE *DnsSb | |
| ); | |
| /** | |
| Create then initialize a Dns service binding instance. | |
| @param Controller The controller to install the DNS service | |
| binding on | |
| @param Image The driver binding image of the DNS driver | |
| @param IpVersion IpVersion for this service | |
| @param Service The variable to receive the created service | |
| binding instance. | |
| @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance. | |
| @retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep | |
| connection with UDP. | |
| @retval EFI_SUCCESS The service instance is created for the | |
| controller. | |
| **/ | |
| EFI_STATUS | |
| DnsCreateService ( | |
| IN EFI_HANDLE Controller, | |
| IN EFI_HANDLE Image, | |
| IN UINT8 IpVersion, | |
| OUT DNS_SERVICE **Service | |
| ); | |
| /** | |
| Unloads an image. | |
| @param ImageHandle Handle that identifies the image to be unloaded. | |
| @retval EFI_SUCCESS The image has been unloaded. | |
| @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| DnsUnload ( | |
| IN EFI_HANDLE ImageHandle | |
| ); | |
| /** | |
| 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. | |
| @param ImageHandle The firmware allocated handle for the UEFI image. | |
| @param SystemTable A pointer to the EFI System Table. | |
| @retval EFI_SUCCESS The operation completed successfully. | |
| @retval Others An unexpected error occurred. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| DnsDriverEntryPoint ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ); | |
| /** | |
| 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. | |
| This function checks to see if the driver specified by This supports the device specified by | |
| ControllerHandle. Drivers will typically use the device path attached to | |
| ControllerHandle and/or the services from the bus I/O abstraction attached to | |
| ControllerHandle to determine if the driver supports ControllerHandle. This function | |
| may be called many times during platform initialization. In order to reduce boot times, the tests | |
| performed by this function must be very small, and take as little time as possible to execute. This | |
| function must not change the state of any hardware devices, and this function must be aware that the | |
| device specified by ControllerHandle may already be managed by the same driver or a | |
| different driver. This function must match its calls to AllocatePages() with FreePages(), | |
| AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). | |
| Because ControllerHandle may have been previously started by the same driver, if a protocol is | |
| already in the opened state, then it must not be closed with CloseProtocol(). This is required | |
| to guarantee the state of ControllerHandle is not modified by this function. | |
| @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. For bus drivers, if this parameter is not NULL, then | |
| the bus driver must determine if the bus controller specified | |
| by ControllerHandle and the child controller specified | |
| by RemainingDevicePath are both supported by this | |
| bus driver. | |
| @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 | |
| Dns4DriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ); | |
| /** | |
| Starts a device controller or a bus controller. | |
| 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. For a bus driver, if this parameter is NULL, then handles | |
| for all the children of Controller are created by this driver. | |
| If this parameter is not NULL and the first Device Path Node is | |
| not the End of Device Path Node, then only the handle for the | |
| child device specified by the first Device Path Node of | |
| RemainingDevicePath is created by this driver. | |
| If the first Device Path Node of RemainingDevicePath is | |
| the End of Device Path Node, no child handle is created by this | |
| driver. | |
| @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 | |
| Dns4DriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ); | |
| /** | |
| Stops a device controller or a bus controller. | |
| 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. | |
| @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 | |
| Dns4DriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer OPTIONAL | |
| ); | |
| /** | |
| 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. | |
| This function checks to see if the driver specified by This supports the device specified by | |
| ControllerHandle. Drivers will typically use the device path attached to | |
| ControllerHandle and/or the services from the bus I/O abstraction attached to | |
| ControllerHandle to determine if the driver supports ControllerHandle. This function | |
| may be called many times during platform initialization. In order to reduce boot times, the tests | |
| performed by this function must be very small, and take as little time as possible to execute. This | |
| function must not change the state of any hardware devices, and this function must be aware that the | |
| device specified by ControllerHandle may already be managed by the same driver or a | |
| different driver. This function must match its calls to AllocatePages() with FreePages(), | |
| AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). | |
| Because ControllerHandle may have been previously started by the same driver, if a protocol is | |
| already in the opened state, then it must not be closed with CloseProtocol(). This is required | |
| to guarantee the state of ControllerHandle is not modified by this function. | |
| @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. For bus drivers, if this parameter is not NULL, then | |
| the bus driver must determine if the bus controller specified | |
| by ControllerHandle and the child controller specified | |
| by RemainingDevicePath are both supported by this | |
| bus driver. | |
| @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 | |
| Dns6DriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ); | |
| /** | |
| Starts a device controller or a bus controller. | |
| 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. For a bus driver, if this parameter is NULL, then handles | |
| for all the children of Controller are created by this driver. | |
| If this parameter is not NULL and the first Device Path Node is | |
| not the End of Device Path Node, then only the handle for the | |
| child device specified by the first Device Path Node of | |
| RemainingDevicePath is created by this driver. | |
| If the first Device Path Node of RemainingDevicePath is | |
| the End of Device Path Node, no child handle is created by this | |
| driver. | |
| @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 | |
| Dns6DriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ); | |
| /** | |
| Stops a device controller or a bus controller. | |
| 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. | |
| @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 | |
| Dns6DriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer OPTIONAL | |
| ); | |
| /** | |
| 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[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @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 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 | |
| Dns4ServiceBindingCreateChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE *ChildHandle | |
| ); | |
| /** | |
| 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[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param[in] 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 | |
| Dns4ServiceBindingDestroyChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ChildHandle | |
| ); | |
| /** | |
| 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[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @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 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 | |
| Dns6ServiceBindingCreateChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE *ChildHandle | |
| ); | |
| /** | |
| 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[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance. | |
| @param[in] 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 | |
| Dns6ServiceBindingDestroyChild ( | |
| IN EFI_SERVICE_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ChildHandle | |
| ); | |
| #endif |