NetworkPkg: Add DNS feature support over IPv4 and IPv6.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: jiaxinwu <jiaxin.wu@intel.com> Reviewed-by: Fu Siyuan <siyuan.fu@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17854 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jiaxinwu
jiaxinwu
606
NetworkPkg/DnsDxe/DnsDriver.h
Normal file
606
NetworkPkg/DnsDxe/DnsDriver.h
Normal file
@@ -0,0 +1,606 @@
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/** @file
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The header files of the driver binding and service binding protocol for DnsDxe driver.
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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||||
which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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||||
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||||
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _DNS_DRIVER_H_
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#define _DNS_DRIVER_H_
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#include <Protocol/DriverBinding.h>
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#include <Protocol/ServiceBinding.h>
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///
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/// Dns service block
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///
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typedef struct _DNS_DRIVER_DATA DNS_DRIVER_DATA;
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///
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/// Dns service block
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///
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typedef struct _DNS_SERVICE DNS_SERVICE;
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///
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/// Dns instance block
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///
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typedef struct _DNS_INSTANCE DNS_INSTANCE;
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#define DNS_SERVICE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'S')
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#define DNS_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'N', 'S', 'I')
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struct _DNS_DRIVER_DATA {
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EFI_EVENT Timer; /// Ticking timer for DNS cache update.
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LIST_ENTRY Dns4CacheList;
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LIST_ENTRY Dns4ServerList;
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LIST_ENTRY Dns6CacheList;
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LIST_ENTRY Dns6ServerList;
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};
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struct _DNS_SERVICE {
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UINT32 Signature;
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EFI_SERVICE_BINDING_PROTOCOL ServiceBinding;
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UINT16 Dns4ChildrenNum;
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LIST_ENTRY Dns4ChildrenList;
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UINT16 Dns6ChildrenNum;
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LIST_ENTRY Dns6ChildrenList;
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EFI_HANDLE ControllerHandle;
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EFI_HANDLE ImageHandle;
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EFI_EVENT TimerToGetMap;
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EFI_EVENT Timer; /// Ticking timer for packet retransmission.
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UINT8 IpVersion;
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UDP_IO *ConnectUdp;
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};
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struct _DNS_INSTANCE {
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UINT32 Signature;
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LIST_ENTRY Link;
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EFI_DNS4_PROTOCOL Dns4;
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EFI_DNS6_PROTOCOL Dns6;
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INTN State;
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BOOLEAN InDestroy;
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DNS_SERVICE *Service;
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EFI_HANDLE ChildHandle;
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EFI_DNS4_CONFIG_DATA Dns4CfgData;
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EFI_DNS6_CONFIG_DATA Dns6CfgData;
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EFI_IP_ADDRESS SessionDnsServer;
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NET_MAP Dns4TxTokens;
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NET_MAP Dns6TxTokens;
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UINT32 MaxRetry;
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UDP_IO *UdpIo;
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};
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typedef struct {
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EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
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UINTN NumberOfChildren;
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EFI_HANDLE *ChildHandleBuffer;
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} DNS_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT;
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extern DNS_DRIVER_DATA *mDriverData;
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#define DNS_SERVICE_FROM_THIS(a) \
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CR (a, DNS_SERVICE, ServiceBinding, DNS_SERVICE_SIGNATURE)
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#define DNS_INSTANCE_FROM_THIS_PROTOCOL4(a) \
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CR (a, DNS_INSTANCE, Dns4, DNS_INSTANCE_SIGNATURE)
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#define DNS_INSTANCE_FROM_THIS_PROTOCOL6(a) \
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CR (a, DNS_INSTANCE, Dns6, DNS_INSTANCE_SIGNATURE)
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/**
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Destroy the DNS instance and recycle the resources.
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@param[in] Instance The pointer to the DNS instance.
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**/
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VOID
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DnsDestroyInstance (
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IN DNS_INSTANCE *Instance
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);
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/**
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Create the DNS instance and initialize it.
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@param[in] Service The pointer to the DNS service.
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@param[out] Instance The pointer to the DNS instance.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resources.
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@retval EFI_SUCCESS The DNS instance is created.
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**/
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EFI_STATUS
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DnsCreateInstance (
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IN DNS_SERVICE *Service,
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OUT DNS_INSTANCE **Instance
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);
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/**
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Callback function which provided by user to remove one node in NetDestroyLinkList process.
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@param[in] Entry The entry to be removed.
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@param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.
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@retval EFI_SUCCESS The entry has been removed successfully.
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@retval Others Fail to remove the entry.
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**/
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EFI_STATUS
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EFIAPI
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DnsDestroyChildEntryInHandleBuffer (
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IN LIST_ENTRY *Entry,
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IN VOID *Context
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);
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/**
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Config a NULL UDP that is used to keep the connection between UDP and DNS.
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Just leave the Udp child unconfigured. When UDP is unloaded,
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DNS will be informed with DriverBinding Stop.
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@param UdpIo The UDP_IO to configure
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@param Context The opaque parameter to the callback
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@retval EFI_SUCCESS It always return EFI_SUCCESS directly.
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**/
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EFI_STATUS
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EFIAPI
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DnsConfigNullUdp (
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IN UDP_IO *UdpIo,
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IN VOID *Context
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);
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/**
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Release all the resource used the DNS service binding instance.
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@param DnsSb The Dns service binding instance.
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**/
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VOID
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DnsDestroyService (
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IN DNS_SERVICE *DnsSb
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);
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/**
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Create then initialize a Dns service binding instance.
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@param Controller The controller to install the DNS service
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binding on
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@param Image The driver binding image of the DNS driver
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@param IpVersion IpVersion for this service
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@param Service The variable to receive the created service
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binding instance.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance.
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@retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep
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connection with UDP.
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@retval EFI_SUCCESS The service instance is created for the
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controller.
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**/
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EFI_STATUS
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DnsCreateService (
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IN EFI_HANDLE Controller,
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IN EFI_HANDLE Image,
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IN UINT8 IpVersion,
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OUT DNS_SERVICE **Service
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);
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/**
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Unloads an image.
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@param ImageHandle Handle that identifies the image to be unloaded.
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@retval EFI_SUCCESS The image has been unloaded.
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@retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.
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**/
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EFI_STATUS
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EFIAPI
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DnsUnload (
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IN EFI_HANDLE ImageHandle
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);
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/**
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This is the declaration of an EFI image entry point. This entry point is
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the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
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both device drivers and bus drivers.
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@param ImageHandle The firmware allocated handle for the UEFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The operation completed successfully.
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@retval Others An unexpected error occurred.
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**/
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EFI_STATUS
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EFIAPI
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DnsDriverEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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/**
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Tests to see if this driver supports a given controller. If a child device is provided,
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it further tests to see if this driver supports creating a handle for the specified child device.
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This function checks to see if the driver specified by This supports the device specified by
|
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ControllerHandle. Drivers will typically use the device path attached to
|
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ControllerHandle and/or the services from the bus I/O abstraction attached to
|
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ControllerHandle to determine if the driver supports ControllerHandle. This function
|
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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
|
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device specified by ControllerHandle may already be managed by the same driver or a
|
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different driver. This function must match its calls to AllocatePages() with FreePages(),
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AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
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Because ControllerHandle may have been previously started by the same driver, if a protocol is
|
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already in the opened state, then it must not be closed with CloseProtocol(). This is required
|
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to guarantee the state of ControllerHandle is not modified by this function.
|
||||
|
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
|
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@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.
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||||
|
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@retval EFI_SUCCESS The device specified by ControllerHandle and
|
||||
RemainingDevicePath is supported by the driver specified by This.
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||||
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
|
||||
RemainingDevicePath is already being managed by the driver
|
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specified by This.
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@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
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||||
RemainingDevicePath is already being managed by a different
|
||||
driver or an application that requires exclusive access.
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||||
Currently not implemented.
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||||
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
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RemainingDevicePath is not supported by the driver specified by This.
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**/
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EFI_STATUS
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EFIAPI
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Dns4DriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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||||
IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
||||
);
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||||
|
||||
/**
|
||||
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
|
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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 failded 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 failded 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_SUCCES The protocol was added to ChildHandle.
|
||||
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
|
||||
@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
|
||||
the child
|
||||
@retval other The child handle was not created
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
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_SUCCES 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_SUCCES The protocol was added to ChildHandle.
|
||||
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
|
||||
@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
|
||||
the child
|
||||
@retval other The child handle was not created
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
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_SUCCES 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
|
||||
Reference in New Issue
Block a user