NetworkPkg/DnsDxe/DnsDriver.c File Reference


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)
EFI_STATUS EFIAPI Dns4DriverBindingStart (IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
EFI_STATUS EFIAPI Dns4DriverBindingStop (IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN UINTN NumberOfChildren, IN EFI_HANDLE *ChildHandleBuffer)
EFI_STATUS EFIAPI Dns6DriverBindingSupported (IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
EFI_STATUS EFIAPI Dns6DriverBindingStart (IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
EFI_STATUS EFIAPI Dns6DriverBindingStop (IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN UINTN NumberOfChildren, IN EFI_HANDLE *ChildHandleBuffer)
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

EFI_DRIVER_BINDING_PROTOCOL gDns4DriverBinding
EFI_DRIVER_BINDING_PROTOCOL gDns6DriverBinding
EFI_SERVICE_BINDING_PROTOCOL mDns4ServiceBinding
EFI_SERVICE_BINDING_PROTOCOL mDns6ServiceBinding
DNS_DRIVER_DATAmDriverData = NULL

Detailed Description

The driver binding and service binding protocol for DnsDxe driver.

Copyright (c) 2015, Intel Corporation. All rights reserved.
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.


Function Documentation

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

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.

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 failded to start the device.

References DnsCreateService(), DnsDestroyService(), _DNS_SERVICE::ServiceBinding, and _DNS_SERVICE::Timer.

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

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.

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.

References DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::ChildHandleBuffer, _DNS_SERVICE::Dns4ChildrenList, DNS_SERVICE_FROM_THIS, DnsDestroyChildEntryInHandleBuffer(), DnsDestroyService(), gDnsControllerNameTable, DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::NumberOfChildren, and DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::ServiceBinding.

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

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.

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

References _DNS_INSTANCE::ChildHandle, _DNS_SERVICE::ConnectUdp, _DNS_INSTANCE::Dns4, _DNS_SERVICE::Dns4ChildrenList, _DNS_SERVICE::Dns4ChildrenNum, DNS_SERVICE_FROM_THIS, DnsCreateInstance(), DnsDestroyInstance(), gDns4DriverBinding, _DNS_INSTANCE::Link, and _DNS_INSTANCE::UdpIo.

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_SUCCES 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

References _DNS_SERVICE::ConnectUdp, _DNS_SERVICE::Dns4ChildrenNum, DNS_INSTANCE_FROM_THIS_PROTOCOL4, DNS_SERVICE_FROM_THIS, DnsDestroyInstance(), gDns4DriverBinding, _DNS_INSTANCE::InDestroy, _DNS_INSTANCE::Link, _DNS_INSTANCE::Service, and _DNS_INSTANCE::UdpIo.

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

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.

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 failded to start the device.

References DnsCreateService(), DnsDestroyService(), _DNS_SERVICE::ServiceBinding, and _DNS_SERVICE::Timer.

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

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.

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.

References DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::ChildHandleBuffer, _DNS_SERVICE::Dns6ChildrenList, DNS_SERVICE_FROM_THIS, DnsDestroyChildEntryInHandleBuffer(), DnsDestroyService(), gDnsControllerNameTable, DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::NumberOfChildren, and DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT::ServiceBinding.

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

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.

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

References _DNS_INSTANCE::ChildHandle, _DNS_SERVICE::ConnectUdp, _DNS_INSTANCE::Dns6, _DNS_SERVICE::Dns6ChildrenList, _DNS_SERVICE::Dns6ChildrenNum, DNS_SERVICE_FROM_THIS, DnsCreateInstance(), DnsDestroyInstance(), gDns6DriverBinding, _DNS_INSTANCE::Link, and _DNS_INSTANCE::UdpIo.

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_SUCCES 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

References _DNS_SERVICE::ConnectUdp, _DNS_SERVICE::Dns6ChildrenNum, DNS_INSTANCE_FROM_THIS_PROTOCOL6, DNS_SERVICE_FROM_THIS, DnsDestroyInstance(), gDns6DriverBinding, _DNS_INSTANCE::InDestroy, _DNS_INSTANCE::Link, _DNS_INSTANCE::Service, and _DNS_INSTANCE::UdpIo.

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.

Referenced by DnsCreateInstance(), and DnsCreateService().

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

References _DNS_INSTANCE::Dns4, _DNS_INSTANCE::Dns4TxTokens, _DNS_INSTANCE::Dns6, _DNS_INSTANCE::Dns6TxTokens, DNS_INSTANCE_SIGNATURE, DNS_STATE_UNCONFIGED, DnsConfigNullUdp(), _DNS_INSTANCE::InDestroy, _DNS_INSTANCE::Link, mDns4Protocol, mDns6Protocol, _DNS_INSTANCE::Service, _DNS_INSTANCE::Signature, _DNS_INSTANCE::State, and _DNS_INSTANCE::UdpIo.

Referenced by Dns4ServiceBindingCreateChild(), and Dns6ServiceBindingCreateChild().

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.

References _DNS_SERVICE::ConnectUdp, _DNS_SERVICE::ControllerHandle, _DNS_SERVICE::Dns4ChildrenList, _DNS_SERVICE::Dns4ChildrenNum, _DNS_SERVICE::Dns6ChildrenList, _DNS_SERVICE::Dns6ChildrenNum, DNS_SERVICE_SIGNATURE, DnsConfigNullUdp(), DnsOnTimerRetransmit(), _DNS_SERVICE::ImageHandle, _DNS_SERVICE::IpVersion, mDns4ServiceBinding, mDns6ServiceBinding, _DNS_SERVICE::ServiceBinding, _DNS_SERVICE::Signature, _DNS_SERVICE::Timer, and _DNS_SERVICE::TimerToGetMap.

Referenced by Dns4DriverBindingStart(), and Dns6DriverBindingStart().

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.

References _DNS_INSTANCE::ChildHandle, and DNS_INSTANCE_SIGNATURE.

Referenced by Dns4DriverBindingStop(), and Dns6DriverBindingStop().

VOID DnsDestroyInstance ( IN DNS_INSTANCE Instance  ) 

Destroy the DNS instance and recycle the resources.

Parameters:
[in] Instance The pointer to the DNS instance.

References Dns4InstanceCancelToken(), and Dns6InstanceCancelToken().

Referenced by Dns4ServiceBindingCreateChild(), Dns4ServiceBindingDestroyChild(), Dns6ServiceBindingCreateChild(), and Dns6ServiceBindingDestroyChild().

VOID DnsDestroyService ( IN DNS_SERVICE DnsSb  ) 

Release all the resource used the DNS service binding instance.

Parameters:
DnsSb The Dns service binding instance.

Referenced by Dns4DriverBindingStart(), Dns4DriverBindingStop(), Dns6DriverBindingStart(), and Dns6DriverBindingStop().

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.

References _DNS_DRIVER_DATA::Dns4CacheList, _DNS_DRIVER_DATA::Dns4ServerList, _DNS_DRIVER_DATA::Dns6CacheList, _DNS_DRIVER_DATA::Dns6ServerList, DnsOnTimerUpdate(), gDns4DriverBinding, gDns6DriverBinding, gDnsComponentName, gDnsComponentName2, and _DNS_DRIVER_DATA::Timer.

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.

References _DNS_DRIVER_DATA::Dns4CacheList, _DNS_DRIVER_DATA::Dns4ServerList, _DNS_DRIVER_DATA::Dns6CacheList, _DNS_DRIVER_DATA::Dns6ServerList, DNS6_CACHE::DnsCache, DNS4_CACHE::DnsCache, and _DNS_DRIVER_DATA::Timer.


Variable Documentation

EFI_DRIVER_BINDING_PROTOCOL gDns4DriverBinding

EFI_DRIVER_BINDING_PROTOCOL gDns6DriverBinding

EFI_SERVICE_BINDING_PROTOCOL mDns4ServiceBinding

EFI_SERVICE_BINDING_PROTOCOL mDns6ServiceBinding


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