#include <Protocol/DriverBinding.h>
#include <Protocol/ServiceBinding.h>

Data Structures
struct	_DNS_DRIVER_DATA

struct	_DNS_SERVICE

struct	_DNS_INSTANCE

struct	DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT

Macros
#define	DNS_SERVICE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'S')

#define	DNS_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'I')

#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)

Typedefs
typedef struct _DNS_DRIVER_DATA	DNS_DRIVER_DATA

typedef struct _DNS_SERVICE	DNS_SERVICE

typedef struct _DNS_INSTANCE	DNS_INSTANCE

Functions
VOID	DnsDestroyInstance (IN DNS_INSTANCE *Instance)

EFI_STATUS	DnsCreateInstance (IN DNS_SERVICE Service, OUT DNS_INSTANCE *Instance)

EFI_STATUS EFIAPI	DnsDestroyChildEntryInHandleBuffer (IN LIST_ENTRY Entry, IN VOID Context)

EFI_STATUS EFIAPI	DnsConfigNullUdp (IN UDP_IO UdpIo, IN VOID Context)

VOID	DnsDestroyService (IN DNS_SERVICE *DnsSb)

EFI_STATUS	DnsCreateService (IN EFI_HANDLE Controller, IN EFI_HANDLE Image, IN UINT8 IpVersion, OUT DNS_SERVICE **Service)

EFI_STATUS EFIAPI	DnsUnload (IN EFI_HANDLE ImageHandle)

EFI_STATUS EFIAPI	DnsDriverEntryPoint (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

EFI_STATUS EFIAPI	Dns4DriverBindingSupported (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL RemainingDevicePath OPTIONAL)

EFI_STATUS EFIAPI	Dns4DriverBindingStart (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL RemainingDevicePath OPTIONAL)

EFI_STATUS EFIAPI	Dns4DriverBindingStop (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN UINTN NumberOfChildren, IN EFI_HANDLE ChildHandleBuffer OPTIONAL)

EFI_STATUS EFIAPI	Dns6DriverBindingSupported (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL RemainingDevicePath OPTIONAL)

EFI_STATUS EFIAPI	Dns6DriverBindingStart (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL RemainingDevicePath OPTIONAL)

EFI_STATUS EFIAPI	Dns6DriverBindingStop (IN EFI_DRIVER_BINDING_PROTOCOL This, IN EFI_HANDLE ControllerHandle, IN UINTN NumberOfChildren, IN EFI_HANDLE ChildHandleBuffer OPTIONAL)

EFI_STATUS EFIAPI	Dns4ServiceBindingCreateChild (IN EFI_SERVICE_BINDING_PROTOCOL This, IN EFI_HANDLE ChildHandle)

EFI_STATUS EFIAPI	Dns4ServiceBindingDestroyChild (IN EFI_SERVICE_BINDING_PROTOCOL *This, IN EFI_HANDLE ChildHandle)

EFI_STATUS EFIAPI	Dns6ServiceBindingCreateChild (IN EFI_SERVICE_BINDING_PROTOCOL This, IN EFI_HANDLE ChildHandle)

EFI_STATUS EFIAPI	Dns6ServiceBindingDestroyChild (IN EFI_SERVICE_BINDING_PROTOCOL *This, IN EFI_HANDLE ChildHandle)

Variables
DNS_DRIVER_DATA *	mDriverData

Detailed Description

The header files of the driver binding and service binding protocol for DnsDxe driver.

Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file DnsDriver.h.

Macro Definition Documentation

◆ DNS_INSTANCE_FROM_THIS_PROTOCOL4

#define DNS_INSTANCE_FROM_THIS_PROTOCOL4 ( a ) CR (a, DNS_INSTANCE, Dns4, DNS_INSTANCE_SIGNATURE)

Definition at line 100 of file DnsDriver.h.

◆ DNS_INSTANCE_FROM_THIS_PROTOCOL6

#define DNS_INSTANCE_FROM_THIS_PROTOCOL6 ( a ) CR (a, DNS_INSTANCE, Dns6, DNS_INSTANCE_SIGNATURE)

Definition at line 103 of file DnsDriver.h.

◆ DNS_INSTANCE_SIGNATURE

#define DNS_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'I')

Definition at line 32 of file DnsDriver.h.

◆ DNS_SERVICE_FROM_THIS

#define DNS_SERVICE_FROM_THIS ( a ) CR (a, DNS_SERVICE, ServiceBinding, DNS_SERVICE_SIGNATURE)

Definition at line 97 of file DnsDriver.h.

◆ DNS_SERVICE_SIGNATURE

#define DNS_SERVICE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'S')

Definition at line 30 of file DnsDriver.h.

Typedef Documentation

◆ DNS_DRIVER_DATA

typedef struct _DNS_DRIVER_DATA DNS_DRIVER_DATA

Dns service block

Definition at line 18 of file DnsDriver.h.

◆ DNS_INSTANCE

typedef struct _DNS_INSTANCE DNS_INSTANCE

Dns instance block

Definition at line 28 of file DnsDriver.h.

◆ DNS_SERVICE

typedef struct _DNS_SERVICE DNS_SERVICE

Dns service block

Definition at line 23 of file DnsDriver.h.

Function Documentation

◆ Dns4DriverBindingStart()

EFI_STATUS EFIAPI Dns4DriverBindingStart	(	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.

ControllerHandle must be a valid EFI_HANDLE.
If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned EFI_DEVICE_PATH_PROTOCOL.
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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[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.

Return values

EFI_SUCCESS	The device was started.
EFI_DEVICE_ERROR	The device could not be started due to a device error.Currently not implemented.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.
Others	The driver failed to start the device.

Definition at line 640 of file DnsDriver.c.

◆ Dns4DriverBindingStop()

EFI_STATUS EFIAPI Dns4DriverBindingStop	(	IN EFI_DRIVER_BINDING_PROTOCOL *	This,
		IN EFI_HANDLE	ControllerHandle,
		IN UINTN	NumberOfChildren,
		IN EFI_HANDLE *ChildHandleBuffer	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.

ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this same driver's Start() function.
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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[in]	NumberOfChildren	The number of child device handles in ChildHandleBuffer.
[in]	ChildHandleBuffer	An array of child handles to be freed. May be NULL if NumberOfChildren is 0.

Return values

EFI_SUCCESS	The device was stopped.
EFI_DEVICE_ERROR	The device could not be stopped due to a device error.

Definition at line 710 of file DnsDriver.c.

◆ Dns4DriverBindingSupported()

EFI_STATUS EFIAPI Dns4DriverBindingSupported	(	IN EFI_DRIVER_BINDING_PROTOCOL *	This,
		IN EFI_HANDLE	ControllerHandle,
		IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath	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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[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.

Return values

EFI_SUCCESS	The device specified by ControllerHandle and RemainingDevicePath is supported by the driver specified by This.
EFI_ALREADY_STARTED	The device specified by ControllerHandle and RemainingDevicePath is already being managed by the driver specified by This.
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.
EFI_UNSUPPORTED	The device specified by ControllerHandle and RemainingDevicePath is not supported by the driver specified by This.

Definition at line 565 of file DnsDriver.c.

◆ Dns4ServiceBindingCreateChild()

EFI_STATUS EFIAPI Dns4ServiceBindingCreateChild	(	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.

Parameters

[in]	This	Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
[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.

Return values

EFI_SUCCESS	The protocol was added to ChildHandle.
EFI_INVALID_PARAMETER	ChildHandle is NULL.
EFI_OUT_OF_RESOURCES	There are not enough resources available to create the child
other	The child handle was not created

Definition at line 1071 of file DnsDriver.c.

◆ Dns4ServiceBindingDestroyChild()

EFI_STATUS EFIAPI Dns4ServiceBindingDestroyChild	(	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.

Parameters

[in]	This	Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
[in]	ChildHandle	Handle of the child to destroy

Return values

EFI_SUCCESS	The protocol was removed from ChildHandle.
EFI_UNSUPPORTED	ChildHandle does not support the protocol that is being removed.
EFI_INVALID_PARAMETER	Child handle is NULL.
EFI_ACCESS_DENIED	The protocol could not be removed from the ChildHandle because its services are being used.
other	The child handle was not destroyed

Definition at line 1202 of file DnsDriver.c.

◆ Dns6DriverBindingStart()

EFI_STATUS EFIAPI Dns6DriverBindingStart	(	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.

ControllerHandle must be a valid EFI_HANDLE.
If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned EFI_DEVICE_PATH_PROTOCOL.
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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[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.

Return values

EFI_SUCCESS	The device was started.
EFI_DEVICE_ERROR	The device could not be started due to a device error.Currently not implemented.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.
Others	The driver failed to start the device.

Definition at line 904 of file DnsDriver.c.

◆ Dns6DriverBindingStop()

EFI_STATUS EFIAPI Dns6DriverBindingStop	(	IN EFI_DRIVER_BINDING_PROTOCOL *	This,
		IN EFI_HANDLE	ControllerHandle,
		IN UINTN	NumberOfChildren,
		IN EFI_HANDLE *ChildHandleBuffer	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.

ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this same driver's Start() function.
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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[in]	NumberOfChildren	The number of child device handles in ChildHandleBuffer.
[in]	ChildHandleBuffer	An array of child handles to be freed. May be NULL if NumberOfChildren is 0.

Return values

EFI_SUCCESS	The device was stopped.
EFI_DEVICE_ERROR	The device could not be stopped due to a device error.

Definition at line 975 of file DnsDriver.c.

◆ Dns6DriverBindingSupported()

EFI_STATUS EFIAPI Dns6DriverBindingSupported	(	IN EFI_DRIVER_BINDING_PROTOCOL *	This,
		IN EFI_HANDLE	ControllerHandle,
		IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath	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.

Parameters

[in]	This	A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
[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.
[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.

Return values

EFI_SUCCESS	The device specified by ControllerHandle and RemainingDevicePath is supported by the driver specified by This.
EFI_ALREADY_STARTED	The device specified by ControllerHandle and RemainingDevicePath is already being managed by the driver specified by This.
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.
EFI_UNSUPPORTED	The device specified by ControllerHandle and RemainingDevicePath is not supported by the driver specified by This.

Definition at line 829 of file DnsDriver.c.

◆ Dns6ServiceBindingCreateChild()

EFI_STATUS EFIAPI Dns6ServiceBindingCreateChild	(	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.

Parameters

[in]	This	Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
[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.

Return values

EFI_SUCCESS	The protocol was added to ChildHandle.
EFI_INVALID_PARAMETER	ChildHandle is NULL.
EFI_OUT_OF_RESOURCES	There are not enough resources available to create the child
other	The child handle was not created

Definition at line 1315 of file DnsDriver.c.

◆ Dns6ServiceBindingDestroyChild()

EFI_STATUS EFIAPI Dns6ServiceBindingDestroyChild	(	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.

Parameters

[in]	This	Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
[in]	ChildHandle	Handle of the child to destroy

Return values

EFI_SUCCESS	The protocol was removed from ChildHandle.
EFI_UNSUPPORTED	ChildHandle does not support the protocol that is being removed.
EFI_INVALID_PARAMETER	Child handle is NULL.
EFI_ACCESS_DENIED	The protocol could not be removed from the ChildHandle because its services are being used.
other	The child handle was not destroyed

Definition at line 1446 of file DnsDriver.c.

◆ DnsConfigNullUdp()

EFI_STATUS EFIAPI DnsConfigNullUdp	(	IN UDP_IO *	UdpIo,
		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.

Parameters

UdpIo	The UDP_IO to configure
Context	The opaque parameter to the callback

Return values

EFI_SUCCESS It always return EFI_SUCCESS directly.

Definition at line 179 of file DnsDriver.c.

◆ DnsCreateInstance()

EFI_STATUS DnsCreateInstance	(	IN DNS_SERVICE *	Service,
		OUT DNS_INSTANCE **	Instance
	)

Create the DNS instance and initialize it.

Parameters

[in]	Service	The pointer to the DNS service.
[out]	Instance	The pointer to the DNS instance.

Return values

EFI_OUT_OF_RESOURCES	Failed to allocate resources.
EFI_SUCCESS	The DNS instance is created.

NicHandle

Definition at line 82 of file DnsDriver.c.

◆ DnsCreateService()

EFI_STATUS DnsCreateService	(	IN EFI_HANDLE	Controller,
		IN EFI_HANDLE	Image,
		IN UINT8	IpVersion,
		OUT DNS_SERVICE **	Service
	)

Create then initialize a Dns service binding instance.

Parameters

Controller	The controller to install the DNS service binding on
Image	The driver binding image of the DNS driver
IpVersion	IpVersion for this service
Service	The variable to receive the created service binding instance.

Return values

EFI_OUT_OF_RESOURCES	Failed to allocate resource to create the instance.
EFI_DEVICE_ERROR	Failed to create a NULL UDP port to keep connection with UDP.
EFI_SUCCESS	The service instance is created for the controller.

Definition at line 229 of file DnsDriver.c.

◆ DnsDestroyChildEntryInHandleBuffer()

EFI_STATUS EFIAPI DnsDestroyChildEntryInHandleBuffer	(	IN LIST_ENTRY *	Entry,
		IN VOID *	Context
	)

Callback function which provided by user to remove one node in NetDestroyLinkList process.

Parameters

[in]	Entry	The entry to be removed.
[in]	Context	Pointer to the callback context corresponds to the Context in NetDestroyLinkList.

Return values

EFI_SUCCESS	The entry has been removed successfully.
Others	Fail to remove the entry.

Definition at line 139 of file DnsDriver.c.

◆ DnsDestroyInstance()

VOID DnsDestroyInstance ( IN DNS_INSTANCE * Instance )

Destroy the DNS instance and recycle the resources.

Parameters

[in] Instance The pointer to the DNS instance.

Definition at line 48 of file DnsDriver.c.

◆ DnsDestroyService()

VOID DnsDestroyService ( IN DNS_SERVICE * DnsSb )

Release all the resource used the DNS service binding instance.

Parameters

DnsSb The Dns service binding instance.

Definition at line 194 of file DnsDriver.c.

◆ DnsDriverEntryPoint()

EFI_STATUS EFIAPI DnsDriverEntryPoint	(	IN EFI_HANDLE	ImageHandle,
		IN EFI_SYSTEM_TABLE *	SystemTable
	)

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.

Parameters

ImageHandle	The firmware allocated handle for the UEFI image.
SystemTable	A pointer to the EFI System Table.

Return values

EFI_SUCCESS	The operation completed successfully.
Others	An unexpected error occurred.

Definition at line 424 of file DnsDriver.c.

◆ DnsUnload()

EFI_STATUS EFIAPI DnsUnload ( IN EFI_HANDLE ImageHandle )

Unloads an image.

Parameters

ImageHandle Handle that identifies the image to be unloaded.

Return values

EFI_SUCCESS	The image has been unloaded.
EFI_INVALID_PARAMETER	ImageHandle is not a valid image handle.

Definition at line 340 of file DnsDriver.c.

Variable Documentation

◆ mDriverData

DNS_DRIVER_DATA* mDriverData

extern

Definition at line 39 of file DnsDriver.c.

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ DNS_INSTANCE_FROM_THIS_PROTOCOL4

◆ DNS_INSTANCE_FROM_THIS_PROTOCOL6

◆ DNS_INSTANCE_SIGNATURE

◆ DNS_SERVICE_FROM_THIS

◆ DNS_SERVICE_SIGNATURE

Typedef Documentation

◆ DNS_DRIVER_DATA

◆ DNS_INSTANCE

◆ DNS_SERVICE

Function Documentation

◆ Dns4DriverBindingStart()

◆ Dns4DriverBindingStop()

◆ Dns4DriverBindingSupported()

◆ Dns4ServiceBindingCreateChild()

◆ Dns4ServiceBindingDestroyChild()

◆ Dns6DriverBindingStart()

◆ Dns6DriverBindingStop()

◆ Dns6DriverBindingSupported()

◆ Dns6ServiceBindingCreateChild()

◆ Dns6ServiceBindingDestroyChild()

◆ DnsConfigNullUdp()

◆ DnsCreateInstance()

◆ DnsCreateService()

◆ DnsDestroyChildEntryInHandleBuffer()

◆ DnsDestroyInstance()

◆ DnsDestroyService()

◆ DnsDriverEntryPoint()

◆ DnsUnload()

Variable Documentation

◆ mDriverData