DnsDhcp.c File Reference

#include "DnsImpl.h"

Go to the source code of this file.

Functions
VOID	DnsInitSeedPacket (OUT EFI_DHCP4_PACKET *Seed, IN EFI_IP4_CONFIG2_INTERFACE_INFO *InterfaceInfo)
VOID EFIAPI	DhcpCommonNotify (IN EFI_EVENT Event, IN VOID *Context)
EFI_STATUS	ParseDhcp4Ack (IN EFI_DHCP4_PROTOCOL *Dhcp4, IN EFI_DHCP4_PACKET *Packet, IN DNS4_SERVER_INFOR *DnsServerInfor)
EFI_STATUS EFIAPI	ParseDhcp6Ack (IN EFI_DHCP6_PROTOCOL *This, IN VOID *Context, IN EFI_DHCP6_PACKET *Packet)
EFI_STATUS	GetDns4ServerFromDhcp4 (IN DNS_INSTANCE *Instance, OUT UINT32 *DnsServerCount, OUT EFI_IPv4_ADDRESS **DnsServerList)
EFI_STATUS	GetDns6ServerFromDhcp6 (IN EFI_HANDLE Image, IN EFI_HANDLE Controller, OUT UINT32 *DnsServerCount, OUT EFI_IPv6_ADDRESS **DnsServerList)

Detailed Description

Functions implementation related with DHCPv4/v6 for DNS driver.

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

Definition in file DnsDhcp.c.

Function Documentation

DhcpCommonNotify()

VOID EFIAPI DhcpCommonNotify	(	IN EFI_EVENT	Event,
		IN VOID *	Context
	)

The common notify function.

Parameters

[in]	Event	The event signaled.
[in]	Context	The context.

Definition at line 54 of file DnsDhcp.c.

DnsInitSeedPacket()

VOID DnsInitSeedPacket	(	OUT EFI_DHCP4_PACKET *	Seed,
		IN EFI_IP4_CONFIG2_INTERFACE_INFO *	InterfaceInfo
	)

This function initialize the DHCP4 message instance.

This function will pad each item of dhcp4 message packet.

Parameters

Seed	Pointer to the message instance of the DHCP4 packet.
InterfaceInfo	Pointer to the EFI_IP4_CONFIG2_INTERFACE_INFO instance.

Definition at line 22 of file DnsDhcp.c.

GetDns4ServerFromDhcp4()

EFI_STATUS GetDns4ServerFromDhcp4	(	IN DNS_INSTANCE *	Instance,
		OUT UINT32 *	DnsServerCount,
		OUT EFI_IPv4_ADDRESS **	DnsServerList
	)

Parse the DHCP ACK to get Dns4 server information.

Parameters

Instance	The DNS instance.
DnsServerCount	Retrieved Dns4 server Ip count.
DnsServerList	Retrieved Dns4 server Ip list.

Return values

EFI_SUCCESS	The Dns4 information is got from the DHCP ACK.
EFI_OUT_OF_RESOURCES	Failed to allocate memory.
EFI_NO_MEDIA	There was a media error.
Others	Other errors as indicated.

Definition at line 255 of file DnsDhcp.c.

GetDns6ServerFromDhcp6()

EFI_STATUS GetDns6ServerFromDhcp6	(	IN EFI_HANDLE	Image,
		IN EFI_HANDLE	Controller,
		OUT UINT32 *	DnsServerCount,
		OUT EFI_IPv6_ADDRESS **	DnsServerList
	)

Parse the DHCP ACK to get Dns6 server information.

Parameters

Image	The handle of the driver image.
Controller	The handle of the controller.
DnsServerCount	Retrieved Dns6 server Ip count.
DnsServerList	Retrieved Dns6 server Ip list.

Return values

EFI_SUCCESS	The Dns6 information is got from the DHCP ACK.
EFI_OUT_OF_RESOURCES	Failed to allocate memory.
EFI_NO_MEDIA	There was a media error.
Others	Other errors as indicated.

Definition at line 608 of file DnsDhcp.c.

ParseDhcp4Ack()

EFI_STATUS ParseDhcp4Ack	(	IN EFI_DHCP4_PROTOCOL *	Dhcp4,
		IN EFI_DHCP4_PACKET *	Packet,
		IN DNS4_SERVER_INFOR *	DnsServerInfor
	)

Parse the ACK to get required information

Parameters

Dhcp4	The DHCP4 protocol.
Packet	Packet waiting for parse.
DnsServerInfor	The required Dns4 server information.

Return values

EFI_SUCCESS	The DNS information is got from the DHCP ACK.
EFI_NO_MAPPING	DHCP failed to acquire address and other information.
EFI_DEVICE_ERROR	Other errors as indicated.
EFI_OUT_OF_RESOURCES	Failed to allocate memory.

Definition at line 80 of file DnsDhcp.c.

ParseDhcp6Ack()

EFI_STATUS EFIAPI ParseDhcp6Ack	(	IN EFI_DHCP6_PROTOCOL *	This,
		IN VOID *	Context,
		IN EFI_DHCP6_PACKET *	Packet
	)

EFI_DHCP6_INFO_CALLBACK is provided by the consumer of the EFI DHCPv6 Protocol instance to intercept events that occurs in the DHCPv6 Information Request exchange process.

Parameters

This	Pointer to the EFI_DHCP6_PROTOCOL instance that is used to configure this callback function.
Context	Pointer to the context that is initialized in the EFI_DHCP6_PROTOCOL.InfoRequest().
Packet	Pointer to Reply packet that has been received. The EFI DHCPv6 Protocol instance is responsible for freeing the buffer.

Return values

EFI_SUCCESS	The DNS information is got from the DHCP ACK.
EFI_DEVICE_ERROR	Other errors as indicated.
EFI_OUT_OF_RESOURCES	Failed to allocate memory.

Definition at line 169 of file DnsDhcp.c.