/** @file This file defines the EFI DNSv6 (Domain Name Service version 6) Protocol. It is split into the following two main sections: DNSv6 Service Binding Protocol (DNSv6SB) DNSv6 Protocol (DNSv6) Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent @par Revision Reference: This Protocol is introduced in UEFI Specification 2.5 **/ #ifndef __EFI_DNS6_PROTOCOL_H__ #define __EFI_DNS6_PROTOCOL_H__ FILE_LICENCE ( BSD2_PATENT ); #define EFI_DNS6_SERVICE_BINDING_PROTOCOL_GUID \ { \ 0x7f1647c8, 0xb76e, 0x44b2, {0xa5, 0x65, 0xf7, 0xf, 0xf1, 0x9c, 0xd1, 0x9e } \ } #define EFI_DNS6_PROTOCOL_GUID \ { \ 0xca37bc1f, 0xa327, 0x4ae9, {0x82, 0x8a, 0x8c, 0x40, 0xd8, 0x50, 0x6a, 0x17 } \ } typedef struct _EFI_DNS6_PROTOCOL EFI_DNS6_PROTOCOL; /// /// EFI_DNS6_CONFIG_DATA /// typedef struct { /// /// If TRUE, enable DNS cache function for this DNS instance. If FALSE, all DNS query /// will not lookup local DNS cache. /// BOOLEAN EnableDnsCache; /// /// Use the protocol number defined in /// http://www.iana.org/assignments/protocol-numbers. Beside TCP/UDP, Other protocol /// is invalid value. An implementation can choose to support UDP, or both TCP and UDP. /// UINT8 Protocol; /// /// The local IP address to use. Set to zero to let the underlying IPv6 /// driver choose a source address. If not zero it must be one of the /// configured IP addresses in the underlying IPv6 driver. /// EFI_IPv6_ADDRESS StationIp; /// /// Local port number. Set to zero to use the automatically assigned port number. /// UINT16 LocalPort; /// /// Count of the DNS servers. When used with GetModeData(), /// this field is the count of originally configured servers when /// Configure() was called for this instance. When used with /// Configure() this is the count of caller-supplied servers. If the /// DnsServerListCount is zero, the DNS server configuration /// will be retrieved from DHCP server automatically. /// UINT32 DnsServerCount; /// /// Pointer to DNS server list containing DnsServerListCount /// entries or NULL if DnsServerListCount is 0. For Configure(), /// this will be NULL when there are no caller supplied server addresses /// and the DNS instance will retrieve DNS server from DHCP Server. /// The provided DNS server list is recommended to be filled up in the sequence /// of preference. When used with GetModeData(), the buffer containing the list /// will be allocated by the driver implementing this protocol and must be /// freed by the caller. When used with Configure(), the buffer /// containing the list will be allocated and released by the caller. /// EFI_IPv6_ADDRESS *DnsServerList; /// /// Retry number if no response received after RetryInterval. /// UINT32 RetryCount; /// /// Minimum interval of retry is 2 second. If the retry interval is less than 2 /// seconds, then use the 2 seconds. UINT32 RetryInterval; } EFI_DNS6_CONFIG_DATA; /// /// EFI_DNS6_CACHE_ENTRY /// typedef struct { /// /// Host name. This should be interpreted as Unicode characters. /// CHAR16 *HostName; /// /// IP address of this host. /// EFI_IPv6_ADDRESS *IpAddress; /// /// Time in second unit that this entry will remain in DNS cache. A value of zero means /// that this entry is permanent. A nonzero value will override the existing one if /// this entry to be added is dynamic entry. Implementations may set its default /// timeout value for the dynamically created DNS cache entry after one DNS resolve /// succeeds. UINT32 Timeout; } EFI_DNS6_CACHE_ENTRY; /// /// EFI_DNS6_MODE_DATA /// typedef struct { /// /// The configuration data of this instance. /// EFI_DNS6_CONFIG_DATA DnsConfigData; /// /// Number of configured DNS6 servers. /// UINT32 DnsServerCount; /// /// Pointer to common list of addresses of all configured DNS server used by EFI_DNS6_PROTOCOL /// instances. List will include DNS servers configured by this or any other EFI_DNS6_PROTOCOL /// instance. The storage for this list is allocated by the driver publishing this protocol, /// and must be freed by the caller. /// EFI_IPv6_ADDRESS *DnsServerList; /// /// Number of DNS Cache entries. The DNS Cache is shared among all DNS instances. /// UINT32 DnsCacheCount; /// /// Pointer to a buffer containing DnsCacheCount DNS Cache /// entry structures. The storage for thislist is allocated by the driver /// publishing this protocol and must be freed by caller. /// EFI_DNS6_CACHE_ENTRY *DnsCacheList; } EFI_DNS6_MODE_DATA; /// /// DNS6_HOST_TO_ADDR_DATA /// typedef struct { /// /// Number of the returned IP address. /// UINT32 IpCount; /// /// Pointer to the all the returned IP address. /// EFI_IPv6_ADDRESS *IpList; } DNS6_HOST_TO_ADDR_DATA; /// /// DNS6_ADDR_TO_HOST_DATA /// typedef struct { /// /// Pointer to the primary name for this host address. It's the caller's /// responsibility to free the response memory. /// CHAR16 *HostName; } DNS6_ADDR_TO_HOST_DATA; /// /// DNS6_RESOURCE_RECORD /// typedef struct { /// /// The Owner name. /// CHAR8 *QName; /// /// The Type Code of this RR. /// UINT16 QType; /// /// The CLASS code of this RR. /// UINT16 QClass; /// /// 32 bit integer which specify the time interval that the resource record may be /// cached before the source of the information should again be consulted. Zero means /// this RR cannot be cached. /// UINT32 TTL; /// /// 16 big integer which specify the length of RData. /// UINT16 DataLength; /// /// A string of octets that describe the resource, the format of this information /// varies according to QType and QClass difference. /// CHAR8 *RData; } DNS6_RESOURCE_RECORD; /// /// DNS6_GENERAL_LOOKUP_DATA /// typedef struct { /// /// Number of returned matching RRs. /// UINTN RRCount; /// /// Pointer to the all the returned matching RRs. It's caller responsibility to free /// the allocated memory to hold the returned RRs. /// DNS6_RESOURCE_RECORD *RRList; } DNS6_GENERAL_LOOKUP_DATA; /// /// EFI_DNS6_COMPLETION_TOKEN /// typedef struct { /// /// This Event will be signaled after the Status field is updated by the EFI DNSv6 /// protocol driver. The type of Event must be EFI_NOTIFY_SIGNAL. /// EFI_EVENT Event; /// /// Will be set to one of the following values: /// EFI_SUCCESS: The host name to address translation completed successfully. /// EFI_NOT_FOUND: No matching Resource Record (RR) is found. /// EFI_TIMEOUT: No DNS server reachable, or RetryCount was exhausted without /// response from all specified DNS servers. /// EFI_DEVICE_ERROR: An unexpected system or network error occurred. /// EFI_NO_MEDIA: There was a media error. /// EFI_STATUS Status; /// /// The parameter configured through DNSv6.Configure() interface. Retry number if no /// response received after RetryInterval. /// UINT32 RetryCount; /// /// The parameter configured through DNSv6.Configure() interface. Minimum interval of /// retry is 2 seconds. If the retry interval is less than 2 seconds, then use the 2 /// seconds. /// UINT32 RetryInterval; /// /// DNSv6 completion token data /// union { /// /// When the Token is used for host name to address translation, H2AData is a pointer /// to the DNS6_HOST_TO_ADDR_DATA. /// DNS6_HOST_TO_ADDR_DATA *H2AData; /// /// When the Token is used for host address to host name translation, A2HData is a /// pointer to the DNS6_ADDR_TO_HOST_DATA. /// DNS6_ADDR_TO_HOST_DATA *A2HData; /// /// When the Token is used for a general lookup function, GLookupDATA is a pointer to /// the DNS6_GENERAL_LOOKUP_DATA. /// DNS6_GENERAL_LOOKUP_DATA *GLookupData; } RspData; } EFI_DNS6_COMPLETION_TOKEN; /** Retrieve mode data of this DNS instance. This function is used to retrieve DNS mode data for this DNS instance. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[out] DnsModeData Pointer to the caller-allocated storage for the EFI_DNS6_MODE_DATA data. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_NOT_STARTED When DnsConfigData is queried, no configuration data is available because this instance has not been configured. @retval EFI_INVALID_PARAMETER This is NULL or DnsModeData is NULL. @retval EFI_OUT_OF_RESOURCE Failed to allocate needed resources. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_GET_MODE_DATA)( IN EFI_DNS6_PROTOCOL *This, OUT EFI_DNS6_MODE_DATA *DnsModeData ); /** Configure this DNS instance. The Configure() function is used to set and change the configuration data for this EFI DNSv6 Protocol driver instance. Reset the DNS instance if DnsConfigData is NULL. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] DnsConfigData Pointer to the configuration data structure. All associated storage to be allocated and released by caller. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_INVALID_PARAMETER This is NULL. The StationIp address provided in DnsConfigData is not zero and not a valid unicast. DnsServerList is NULL while DnsServerList Count is not ZERO. DnsServerList Count is ZERO while DnsServerList is not NULL. @retval EFI_OUT_OF_RESOURCES The DNS instance data or required space could not be allocated. @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The EFI DNSv6 Protocol instance is not configured. @retval EFI_UNSUPPORTED The designated protocol is not supported. @retval EFI_ALREADY_STARTED Second call to Configure() with DnsConfigData. To reconfigure the instance the caller must call Configure() with NULL first to return driver to unconfigured state. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_CONFIGURE)( IN EFI_DNS6_PROTOCOL *This, IN EFI_DNS6_CONFIG_DATA *DnsConfigData ); /** Host name to host address translation. The HostNameToIp () function is used to translate the host name to host IP address. A type AAAA query is used to get the one or more IPv6 addresses for this host. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] HostName Host name. @param[in] Token Point to the completion token to translate host name to host address. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: This is NULL. Token is NULL. Token.Event is NULL. HostName is NULL or buffer contained unsupported characters. @retval EFI_NO_MAPPING There's no source address is available for use. @retval EFI_ALREADY_STARTED This Token is being used in another DNS session. @retval EFI_NOT_STARTED This instance has not been started. @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_HOST_NAME_TO_IP)( IN EFI_DNS6_PROTOCOL *This, IN CHAR16 *HostName, IN EFI_DNS6_COMPLETION_TOKEN *Token ); /** Host address to host name translation. The IpToHostName () function is used to translate the host address to host name. A type PTR query is used to get the primary name of the host. Implementation can choose to support this function or not. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] IpAddress Ip Address. @param[in] Token Point to the completion token to translate host address to host name. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_UNSUPPORTED This function is not supported. @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: This is NULL. Token is NULL. Token.Event is NULL. IpAddress is not valid IP address. @retval EFI_NO_MAPPING There's no source address is available for use. @retval EFI_NOT_STARTED This instance has not been started. @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_IP_TO_HOST_NAME)( IN EFI_DNS6_PROTOCOL *This, IN EFI_IPv6_ADDRESS IpAddress, IN EFI_DNS6_COMPLETION_TOKEN *Token ); /** This function provides capability to retrieve arbitrary information from the DNS server. This GeneralLookup() function retrieves arbitrary information from the DNS. The caller supplies a QNAME, QTYPE, and QCLASS, and all of the matching RRs are returned. All RR content (e.g., TTL) was returned. The caller need parse the returned RR to get required information. The function is optional. Implementation can choose to support it or not. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] QName Pointer to Query Name. @param[in] QType Query Type. @param[in] QClass Query Name. @param[in] Token Point to the completion token to retrieve arbitrary information. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_UNSUPPORTED This function is not supported. Or the requested QType is not supported @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: This is NULL. Token is NULL. Token.Event is NULL. QName is NULL. @retval EFI_NO_MAPPING There's no source address is available for use. @retval EFI_NOT_STARTED This instance has not been started. @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_GENERAL_LOOKUP)( IN EFI_DNS6_PROTOCOL *This, IN CHAR8 *QName, IN UINT16 QType, IN UINT16 QClass, IN EFI_DNS6_COMPLETION_TOKEN *Token ); /** This function is to update the DNS Cache. The UpdateDnsCache() function is used to add/delete/modify DNS cache entry. DNS cache can be normally dynamically updated after the DNS resolve succeeds. This function provided capability to manually add/delete/modify the DNS cache. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] DeleteFlag If FALSE, this function is to add one entry to the DNS Cahce. If TRUE, this function will delete matching DNS Cache entry. @param[in] Override If TRUE, the maching DNS cache entry will be overwritten with the supplied parameter. If FALSE, EFI_ACCESS_DENIED will be returned if the entry to be added is already existed. @param[in] DnsCacheEntry Pointer to DNS Cache entry. @retval EFI_SUCCESS The operation completed successfully. @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE: This is NULL. DnsCacheEntry.HostName is NULL. DnsCacheEntry.IpAddress is NULL. DnsCacheEntry.Timeout is zero. @retval EFI_ACCESS_DENIED The DNS cache entry already exists and Override is not TRUE. @retval EFI_OUT_OF_RESOURCE Failed to allocate needed resources. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_UPDATE_DNS_CACHE)( IN EFI_DNS6_PROTOCOL *This, IN BOOLEAN DeleteFlag, IN BOOLEAN Override, IN EFI_DNS6_CACHE_ENTRY DnsCacheEntry ); /** Polls for incoming data packets and processes outgoing data packets. The Poll() function can be used by network drivers and applications to increase the rate that data packets are moved between the communications device and the transmit and receive queues. In some systems, the periodic timer event in the managed network driver may not poll the underlying communications device fast enough to transmit and/or receive all data packets without missing incoming packets or dropping outgoing packets. Drivers and applications that are experiencing packet loss should try calling the Poll() function more often. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @retval EFI_SUCCESS Incoming or outgoing data was processed. @retval EFI_NOT_STARTED This EFI DNS Protocol instance has not been started. @retval EFI_INVALID_PARAMETER This is NULL. @retval EFI_NO_MAPPING There is no source address is available for use. @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive queue. Consider increasing the polling rate. **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_POLL)( IN EFI_DNS6_PROTOCOL *This ); /** Abort an asynchronous DNS operation, including translation between IP and Host, and general look up behavior. The Cancel() function is used to abort a pending resolution request. After calling this function, Token.Status will be set to EFI_ABORTED and then Token.Event will be signaled. If the token is not in one of the queues, which usually means that the asynchronous operation has completed, this function will not signal the token and EFI_NOT_FOUND is returned. @param[in] This Pointer to EFI_DNS6_PROTOCOL instance. @param[in] Token Pointer to a token that has been issued by EFI_DNS6_PROTOCOL.HostNameToIp (), EFI_DNS6_PROTOCOL.IpToHostName() or EFI_DNS6_PROTOCOL.GeneralLookup(). If NULL, all pending tokens are aborted. @retval EFI_SUCCESS Incoming or outgoing data was processed. @retval EFI_NOT_STARTED This EFI DNS6 Protocol instance has not been started. @retval EFI_INVALID_PARAMETER This is NULL. @retval EFI_NO_MAPPING There's no source address is available for use. @retval EFI_NOT_FOUND When Token is not NULL, and the asynchronous DNS operation was not found in the transmit queue. It was either completed or was not issued by HostNameToIp(), IpToHostName() or GeneralLookup(). **/ typedef EFI_STATUS (EFIAPI *EFI_DNS6_CANCEL)( IN EFI_DNS6_PROTOCOL *This, IN EFI_DNS6_COMPLETION_TOKEN *Token ); /// /// The EFI_DNS6_PROTOCOL provides the function to get the host name and address /// mapping, also provide pass through interface to retrieve arbitrary information from /// DNSv6. /// struct _EFI_DNS6_PROTOCOL { EFI_DNS6_GET_MODE_DATA GetModeData; EFI_DNS6_CONFIGURE Configure; EFI_DNS6_HOST_NAME_TO_IP HostNameToIp; EFI_DNS6_IP_TO_HOST_NAME IpToHostName; EFI_DNS6_GENERAL_LOOKUP GeneralLookUp; EFI_DNS6_UPDATE_DNS_CACHE UpdateDnsCache; EFI_DNS6_POLL Poll; EFI_DNS6_CANCEL Cancel; }; extern EFI_GUID gEfiDns6ServiceBindingProtocolGuid; extern EFI_GUID gEfiDns6ProtocolGuid; #endif