mirror of https://github.com/acidanthera/audk.git
141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/** @file
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Functions implementation related with DHCPv4/v6 for DNS driver.
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Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _DNS_DHCP_H_
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#define _DNS_DHCP_H_
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//
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// DHCP DNS related
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//
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#pragma pack(1)
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#define IP4_ETHER_PROTO 0x0800
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#define DHCP4_OPCODE_REQUEST 1
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#define DHCP4_MAGIC 0x63538263 /// network byte order
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#define DHCP4_TAG_EOP 255 /// End Option
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#define DHCP4_TAG_TYPE 53
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#define DHCP4_MSG_REQUEST 3
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#define DHCP4_MSG_INFORM 8
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#define DHCP4_TAG_PARA_LIST 55
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#define DHCP4_TAG_DNS_SERVER 6
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#define DHCP6_TAG_DNS_REQUEST 6
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#define DHCP6_TAG_DNS_SERVER 23
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#define DNS_CHECK_MEDIA_GET_DHCP_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)
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//
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// The required Dns4 server information.
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//
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typedef struct {
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UINT32 *ServerCount;
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EFI_IPv4_ADDRESS *ServerList;
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} DNS4_SERVER_INFOR;
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//
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// The required Dns6 server information.
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//
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typedef struct {
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UINT32 *ServerCount;
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EFI_IPv6_ADDRESS *ServerList;
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} DNS6_SERVER_INFOR;
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#pragma pack()
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/**
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Parse the ACK to get required information
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@param Dhcp4 The DHCP4 protocol.
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@param Packet Packet waiting for parse.
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@param DnsServerInfor The required Dns4 server information.
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@retval EFI_SUCCESS The DNS information is got from the DHCP ACK.
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@retval EFI_NO_MAPPING DHCP failed to acquire address and other information.
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@retval EFI_DEVICE_ERROR Other errors as indicated.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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**/
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EFI_STATUS
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ParseDhcp4Ack (
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IN EFI_DHCP4_PROTOCOL *Dhcp4,
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IN EFI_DHCP4_PACKET *Packet,
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IN DNS4_SERVER_INFOR *DnsServerInfor
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);
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/**
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EFI_DHCP6_INFO_CALLBACK is provided by the consumer of the EFI DHCPv6 Protocol
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instance to intercept events that occurs in the DHCPv6 Information Request
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exchange process.
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@param This Pointer to the EFI_DHCP6_PROTOCOL instance that
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is used to configure this callback function.
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@param Context Pointer to the context that is initialized in
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the EFI_DHCP6_PROTOCOL.InfoRequest().
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@param Packet Pointer to Reply packet that has been received.
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The EFI DHCPv6 Protocol instance is responsible
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for freeing the buffer.
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@retval EFI_SUCCESS The DNS information is got from the DHCP ACK.
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@retval EFI_DEVICE_ERROR Other errors as indicated.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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**/
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EFI_STATUS
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EFIAPI
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ParseDhcp6Ack (
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IN EFI_DHCP6_PROTOCOL *This,
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IN VOID *Context,
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IN EFI_DHCP6_PACKET *Packet
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);
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/**
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Parse the DHCP ACK to get Dns4 server information.
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@param Instance The DNS instance.
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@param DnsServerCount Retrieved Dns4 server Ip count.
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@param DnsServerList Retrieved Dns4 server Ip list.
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@retval EFI_SUCCESS The Dns4 information is got from the DHCP ACK.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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@retval EFI_NO_MEDIA There was a media error.
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@retval Others Other errors as indicated.
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**/
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EFI_STATUS
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GetDns4ServerFromDhcp4 (
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IN DNS_INSTANCE *Instance,
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OUT UINT32 *DnsServerCount,
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OUT EFI_IPv4_ADDRESS **DnsServerList
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);
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/**
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Parse the DHCP ACK to get Dns6 server information.
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@param Image The handle of the driver image.
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@param Controller The handle of the controller.
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@param DnsServerCount Retrieved Dns6 server Ip count.
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@param DnsServerList Retrieved Dns6 server Ip list.
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@retval EFI_SUCCESS The Dns6 information is got from the DHCP ACK.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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@retval EFI_NO_MEDIA There was a media error.
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@retval Others Other errors as indicated.
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**/
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EFI_STATUS
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GetDns6ServerFromDhcp6 (
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IN EFI_HANDLE Image,
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IN EFI_HANDLE Controller,
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OUT UINT32 *DnsServerCount,
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OUT EFI_IPv6_ADDRESS **DnsServerList
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);
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#endif
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