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audk/MdeModulePkg/Universal/Network/ArpDxe/ArpImpl.h

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/** @file
EFI Address Resolution Protocol (ARP) Protocol interface header file.
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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<BR>
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.
**/
#ifndef _ARP_IMPL_H_
#define _ARP_IMPL_H_
#include <Uefi.h>
#include <Protocol/Arp.h>
#include <Protocol/ManagedNetwork.h>
#include <Protocol/ServiceBinding.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/NetLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DpcLib.h>
//
// Ethernet protocol type definitions.
//
#define ARP_ETHER_PROTO_TYPE 0x0806
#define IPV4_ETHER_PROTO_TYPE 0x0800
#define IPV6_ETHER_PROTO_TYPE 0x86DD
//
// ARP opcode definitions.
//
#define ARP_OPCODE_REQUEST 0x0001
#define ARP_OPCODE_REPLY 0x0002
//
// ARP timeout, retry count and interval definitions.
//
#define ARP_DEFAULT_TIMEOUT_VALUE (400 * TICKS_PER_SECOND)
#define ARP_DEFAULT_RETRY_COUNT 2
#define ARP_DEFAULT_RETRY_INTERVAL (5 * TICKS_PER_MS)
#define ARP_PERIODIC_TIMER_INTERVAL (500 * TICKS_PER_MS)
//
// ARP packet head definition.
//
#pragma pack(1)
typedef struct {
UINT16 HwType;
UINT16 ProtoType;
UINT8 HwAddrLen;
UINT8 ProtoAddrLen;
UINT16 OpCode;
} ARP_HEAD;
#pragma pack()
//
// ARP Address definition for internal use.
//
typedef struct {
UINT8 *SenderHwAddr;
UINT8 *SenderProtoAddr;
UINT8 *TargetHwAddr;
UINT8 *TargetProtoAddr;
} ARP_ADDRESS;
#define MATCH_SW_ADDRESS 0x1
#define MATCH_HW_ADDRESS 0x2
//
// Enumeration for the search type. A search type is specified as the keyword to find
// a cache entry in the cache table.
//
typedef enum {
ByNone = 0,
ByProtoAddress = MATCH_SW_ADDRESS,
ByHwAddress = MATCH_HW_ADDRESS,
ByBoth = MATCH_SW_ADDRESS | MATCH_HW_ADDRESS
} FIND_OPTYPE;
#define ARP_INSTANCE_DATA_SIGNATURE SIGNATURE_32('A', 'R', 'P', 'I')
/**
Returns a pointer to the ARP_INSTANCE_DATA structure from the input a.
If the signatures matches, then a pointer to the data structure that contains
a specified field of that data structure is returned.
@param a Pointer to the field specified by ArpProto within a data
structure of type ARP_INSTANCE_DATA.
**/
#define ARP_INSTANCE_DATA_FROM_THIS(a) \
CR ( \
(a), \
ARP_INSTANCE_DATA, \
ArpProto, \
ARP_INSTANCE_DATA_SIGNATURE \
)
typedef struct _ARP_SERVICE_DATA ARP_SERVICE_DATA;
//
// ARP instance context data structure.
//
typedef struct {
UINT32 Signature;
ARP_SERVICE_DATA *ArpService;
EFI_HANDLE Handle;
EFI_ARP_PROTOCOL ArpProto;
LIST_ENTRY List;
EFI_ARP_CONFIG_DATA ConfigData;
BOOLEAN Configured;
BOOLEAN InDestroy;
} ARP_INSTANCE_DATA;
#define ARP_SERVICE_DATA_SIGNATURE SIGNATURE_32('A', 'R', 'P', 'S')
/**
Returns a pointer to the ARP_SERVICE_DATA structure from the input a.
If the signatures matches, then a pointer to the data structure that contains
a specified field of that data structure is returned.
@param a Pointer to the field specified by ServiceBinding within
a data structure of type ARP_SERVICE_DATA.
**/
#define ARP_SERVICE_DATA_FROM_THIS(a) \
CR ( \
(a), \
ARP_SERVICE_DATA, \
ServiceBinding, \
ARP_SERVICE_DATA_SIGNATURE \
)
//
// ARP service data structure.
//
struct _ARP_SERVICE_DATA {
UINT32 Signature;
EFI_SERVICE_BINDING_PROTOCOL ServiceBinding;
EFI_HANDLE MnpChildHandle;
EFI_HANDLE ImageHandle;
EFI_HANDLE ControllerHandle;
EFI_MANAGED_NETWORK_PROTOCOL *Mnp;
EFI_MANAGED_NETWORK_CONFIG_DATA MnpConfigData;
EFI_MANAGED_NETWORK_COMPLETION_TOKEN RxToken;
EFI_SIMPLE_NETWORK_MODE SnpMode;
UINTN ChildrenNumber;
LIST_ENTRY ChildrenList;
LIST_ENTRY PendingRequestTable;
LIST_ENTRY DeniedCacheTable;
LIST_ENTRY ResolvedCacheTable;
EFI_EVENT PeriodicTimer;
};
//
// User request context structure.
//
typedef struct {
LIST_ENTRY List;
ARP_INSTANCE_DATA *Instance;
EFI_EVENT UserRequestEvent;
VOID *UserHwAddrBuffer;
} USER_REQUEST_CONTEXT;
#define ARP_MAX_PROTOCOL_ADDRESS_LEN sizeof(EFI_IP_ADDRESS)
#define ARP_MAX_HARDWARE_ADDRESS_LEN sizeof(EFI_MAC_ADDRESS)
typedef union {
UINT8 ProtoAddress[ARP_MAX_PROTOCOL_ADDRESS_LEN];
UINT8 HwAddress[ARP_MAX_HARDWARE_ADDRESS_LEN];
} NET_ARP_ADDRESS_UNION;
//
// ARP address structure in an ARP packet.
//
typedef struct {
UINT16 Type;
UINT8 Length;
UINT8 *AddressPtr;
NET_ARP_ADDRESS_UNION Buffer;
} NET_ARP_ADDRESS;
//
// Enumeration for ARP address type.
//
typedef enum {
Hardware,
Protocol
} ARP_ADDRESS_TYPE;
//
// ARP cache entry definition.
//
typedef struct {
LIST_ENTRY List;
UINT32 RetryCount;
UINT32 DefaultDecayTime;
UINT32 DecayTime;
UINT32 NextRetryTime;
NET_ARP_ADDRESS Addresses[2];
LIST_ENTRY UserRequestList;
} ARP_CACHE_ENTRY;
/**
This function is used to assign a station address to the ARP cache for this instance
of the ARP driver.
Each ARP instance has one station address. The EFI_ARP_PROTOCOL driver will
respond to ARP requests that match this registered station address. A call to
this function with the ConfigData field set to NULL will reset this ARP instance.
Once a protocol type and station address have been assigned to this ARP instance,
all the following ARP functions will use this information. Attempting to change
the protocol type or station address to a configured ARP instance will result in errors.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param ConfigData Pointer to the EFI_ARP_CONFIG_DATA structure.
@retval EFI_SUCCESS The new station address was successfully
registered.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
This is NULL. SwAddressLength is zero when
ConfigData is not NULL. StationAddress is NULL
when ConfigData is not NULL.
@retval EFI_ACCESS_DENIED The SwAddressType, SwAddressLength, or
StationAddress is different from the one that is
already registered.
@retval EFI_OUT_OF_RESOURCES Storage for the new StationAddress could not be
allocated.
**/
EFI_STATUS
EFIAPI
ArpConfigure (
IN EFI_ARP_PROTOCOL *This,
IN EFI_ARP_CONFIG_DATA *ConfigData OPTIONAL
);
/**
This function is used to insert entries into the ARP cache.
ARP cache entries are typically inserted and updated by network protocol drivers
as network traffic is processed. Most ARP cache entries will time out and be
deleted if the network traffic stops. ARP cache entries that were inserted
by the Add() function may be static (will not time out) or dynamic (will time out).
Default ARP cache timeout values are not covered in most network protocol
specifications (although RFC 1122 comes pretty close) and will only be
discussed in general in this specification. The timeout values that are
used in the EFI Sample Implementation should be used only as a guideline.
Final product implementations of the EFI network stack should be tuned for
their expected network environments.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param DenyFlag Set to TRUE if this entry is a deny entry. Set to
FALSE if this entry is a normal entry.
@param TargetSwAddress Pointer to a protocol address to add (or deny).
May be set to NULL if DenyFlag is TRUE.
@param TargetHwAddress Pointer to a hardware address to add (or deny).
May be set to NULL if DenyFlag is TRUE.
@param TimeoutValue Time in 100-ns units that this entry will remain
in the ARP cache. A value of zero means that the
entry is permanent. A nonzero value will override
the one given by Configure() if the entry to be
added is a dynamic entry.
@param Overwrite If TRUE, the matching cache entry will be
overwritten with the supplied parameters. If
FALSE, EFI_ACCESS_DENIED is returned if the
corresponding cache entry already exists.
@retval EFI_SUCCESS The entry has been added or updated.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
This is NULL. DenyFlag is FALSE and
TargetHwAddress is NULL. DenyFlag is FALSE and
TargetSwAddress is NULL. TargetHwAddress is NULL
and TargetSwAddress is NULL. Both TargetSwAddress
and TargetHwAddress are not NULL when DenyFlag is
TRUE.
@retval EFI_OUT_OF_RESOURCES The new ARP cache entry could not be allocated.
@retval EFI_ACCESS_DENIED The ARP cache entry already exists and Overwrite
is not true.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
**/
EFI_STATUS
EFIAPI
ArpAdd (
IN EFI_ARP_PROTOCOL *This,
IN BOOLEAN DenyFlag,
IN VOID *TargetSwAddress OPTIONAL,
IN VOID *TargetHwAddress OPTIONAL,
IN UINT32 TimeoutValue,
IN BOOLEAN Overwrite
);
/**
This function searches the ARP cache for matching entries and allocates a buffer into
which those entries are copied.
The first part of the allocated buffer is EFI_ARP_FIND_DATA, following which
are protocol address pairs and hardware address pairs.
When finding a specific protocol address (BySwAddress is TRUE and AddressBuffer
is not NULL), the ARP cache timeout for the found entry is reset if Refresh is
set to TRUE. If the found ARP cache entry is a permanent entry, it is not
affected by Refresh.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param BySwAddress Set to TRUE to look for matching software protocol
addresses. Set to FALSE to look for matching
hardware protocol addresses.
@param AddressBuffer Pointer to address buffer. Set to NULL to match
all addresses.
@param EntryLength The size of an entry in the entries buffer.
@param EntryCount The number of ARP cache entries that are found by
the specified criteria.
@param Entries Pointer to the buffer that will receive the ARP
cache entries.
@param Refresh Set to TRUE to refresh the timeout value of the
matching ARP cache entry.
@retval EFI_SUCCESS The requested ARP cache entries were copied into
the buffer.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
This is NULL. Both EntryCount and EntryLength are
NULL, when Refresh is FALSE.
@retval EFI_NOT_FOUND No matching entries were found.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
**/
EFI_STATUS
EFIAPI
ArpFind (
IN EFI_ARP_PROTOCOL *This,
IN BOOLEAN BySwAddress,
IN VOID *AddressBuffer OPTIONAL,
OUT UINT32 *EntryLength OPTIONAL,
OUT UINT32 *EntryCount OPTIONAL,
OUT EFI_ARP_FIND_DATA **Entries OPTIONAL,
IN BOOLEAN Refresh
);
/**
This function removes specified ARP cache entries.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param BySwAddress Set to TRUE to delete matching protocol addresses.
Set to FALSE to delete matching hardware
addresses.
@param AddressBuffer Pointer to the address buffer that is used as a
key to look for the cache entry. Set to NULL to
delete all entries.
@retval EFI_SUCCESS The entry was removed from the ARP cache.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_NOT_FOUND The specified deletion key was not found.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
**/
EFI_STATUS
EFIAPI
ArpDelete (
IN EFI_ARP_PROTOCOL *This,
IN BOOLEAN BySwAddress,
IN VOID *AddressBuffer OPTIONAL
);
/**
This function delete all dynamic entries from the ARP cache that match the specified
software protocol type.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@retval EFI_SUCCESS The cache has been flushed.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_NOT_FOUND There are no matching dynamic cache entries.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
**/
EFI_STATUS
EFIAPI
ArpFlush (
IN EFI_ARP_PROTOCOL *This
);
/**
This function tries to resolve the TargetSwAddress and optionally returns a
TargetHwAddress if it already exists in the ARP cache.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param TargetSwAddress Pointer to the protocol address to resolve.
@param ResolvedEvent Pointer to the event that will be signaled when
the address is resolved or some error occurs.
@param TargetHwAddress Pointer to the buffer for the resolved hardware
address in network byte order.
@retval EFI_SUCCESS The data is copied from the ARP cache into the
TargetHwAddress buffer.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
This is NULL. TargetHwAddress is NULL.
@retval EFI_ACCESS_DENIED The requested address is not present in the normal
ARP cache but is present in the deny address list.
Outgoing traffic to that address is forbidden.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
@retval EFI_NOT_READY The request has been started and is not finished.
**/
EFI_STATUS
EFIAPI
ArpRequest (
IN EFI_ARP_PROTOCOL *This,
IN VOID *TargetSwAddress OPTIONAL,
IN EFI_EVENT ResolvedEvent OPTIONAL,
OUT VOID *TargetHwAddress
);
/**
This function aborts the previous ARP request (identified by This, TargetSwAddress
and ResolvedEvent) that is issued by EFI_ARP_PROTOCOL.Request().
If the request is in the internal ARP request queue, the request is aborted
immediately and its ResolvedEvent is signaled. Only an asynchronous address
request needs to be canceled. If TargeSwAddress and ResolveEvent are both
NULL, all the pending asynchronous requests that have been issued by This
instance will be cancelled and their corresponding events will be signaled.
@param This Pointer to the EFI_ARP_PROTOCOL instance.
@param TargetSwAddress Pointer to the protocol address in previous
request session.
@param ResolvedEvent Pointer to the event that is used as the
notification event in previous request session.
@retval EFI_SUCCESS The pending request session(s) is/are aborted and
corresponding event(s) is/are signaled.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
This is NULL. TargetSwAddress is not NULL and
ResolvedEvent is NULL. TargetSwAddress is NULL and
ResolvedEvent is not NULL.
@retval EFI_NOT_STARTED The ARP driver instance has not been configured.
@retval EFI_NOT_FOUND The request is not issued by
EFI_ARP_PROTOCOL.Request().
**/
EFI_STATUS
EFIAPI
ArpCancel (
IN EFI_ARP_PROTOCOL *This,
IN VOID *TargetSwAddress OPTIONAL,
IN EFI_EVENT ResolvedEvent OPTIONAL
);
/**
Configure the instance using the ConfigData. ConfigData is already validated.
@param[in] Instance Pointer to the instance context data to be
configured.
@param[in] ConfigData Pointer to the configuration data used to
configure the instance.
@retval EFI_SUCCESS The instance is configured with the ConfigData.
@retval EFI_ACCESS_DENIED The instance is already configured and the
ConfigData tries to reset some unchangeable
fields.
@retval EFI_INVALID_PARAMETER The ConfigData provides a non-unicast IPv4 address
when the SwAddressType is IPv4.
@retval EFI_OUT_OF_RESOURCES The instance fails to configure due to memory
limitation.
**/
EFI_STATUS
ArpConfigureInstance (
IN ARP_INSTANCE_DATA *Instance,
IN EFI_ARP_CONFIG_DATA *ConfigData OPTIONAL
);
/**
Find the CacheEntry, using ProtocolAddress or HardwareAddress or both, as the keyword,
in the DeniedCacheTable.
@param[in] ArpService Pointer to the arp service context data.
@param[in] ProtocolAddress Pointer to the protocol address.
@param[in] HardwareAddress Pointer to the hardware address.
@return Pointer to the matched cache entry, if NULL no match is found.
**/
ARP_CACHE_ENTRY *
ArpFindDeniedCacheEntry (
IN ARP_SERVICE_DATA *ArpService,
IN NET_ARP_ADDRESS *ProtocolAddress OPTIONAL,
IN NET_ARP_ADDRESS *HardwareAddress OPTIONAL
);
/**
Find the CacheEntry which matches the requirements in the specified CacheTable.
@param[in] CacheTable Pointer to the arp cache table.
@param[in] StartEntry Pointer to the start entry this search begins with
in the cache table.
@param[in] FindOpType The search type.
@param[in] ProtocolAddress Pointer to the protocol address to match.
@param[in] HardwareAddress Pointer to the hardware address to match.
@return Pointer to the matched arp cache entry, if NULL, no match is found.
**/
ARP_CACHE_ENTRY *
ArpFindNextCacheEntryInTable (
IN LIST_ENTRY *CacheTable,
IN LIST_ENTRY *StartEntry,
IN FIND_OPTYPE FindOpType,
IN NET_ARP_ADDRESS *ProtocolAddress OPTIONAL,
IN NET_ARP_ADDRESS *HardwareAddress OPTIONAL
);
/**
Allocate a cache entry and initialize it.
@param[in] Instance Pointer to the instance context data.
@return Pointer to the new created cache entry.
**/
ARP_CACHE_ENTRY *
ArpAllocCacheEntry (
IN ARP_INSTANCE_DATA *Instance
);
/**
Fill the addresses in the CacheEntry using the information passed in by
HwAddr and SwAddr.
@param[in] CacheEntry Pointer to the cache entry.
@param[in] HwAddr Pointer to the software address.
@param[in] SwAddr Pointer to the hardware address.
@return None.
**/
VOID
ArpFillAddressInCacheEntry (
IN ARP_CACHE_ENTRY *CacheEntry,
IN NET_ARP_ADDRESS *HwAddr OPTIONAL,
IN NET_ARP_ADDRESS *SwAddr OPTIONAL
);
/**
Turn the CacheEntry into the resolved status.
@param[in] CacheEntry Pointer to the resolved cache entry.
@param[in] Instance Pointer to the instance context data.
@param[in] UserEvent Pointer to the UserEvent to notify.
@return The count of notifications sent to the instance.
**/
UINTN
ArpAddressResolved (
IN ARP_CACHE_ENTRY *CacheEntry,
IN ARP_INSTANCE_DATA *Instance OPTIONAL,
IN EFI_EVENT UserEvent OPTIONAL
);
/**
Delete cache entries in all the cache tables.
@param[in] Instance Pointer to the instance context data.
@param[in] BySwAddress Delete the cache entry by software address or by
hardware address.
@param[in] AddressBuffer Pointer to the buffer containing the address to
match for the deletion.
@param[in] Force This deletion is forced or not.
@return The count of the deleted cache entries.
**/
UINTN
ArpDeleteCacheEntry (
IN ARP_INSTANCE_DATA *Instance,
IN BOOLEAN BySwAddress,
IN UINT8 *AddressBuffer OPTIONAL,
IN BOOLEAN Force
);
/**
Send out an arp frame using the CachEntry and the ArpOpCode.
@param[in] Instance Pointer to the instance context data.
@param[in] CacheEntry Pointer to the configuration data used to
configure the instance.
@param[in] ArpOpCode The opcode used to send out this Arp frame, either
request or reply.
@return None.
**/
VOID
ArpSendFrame (
IN ARP_INSTANCE_DATA *Instance,
IN ARP_CACHE_ENTRY *CacheEntry,
IN UINT16 ArpOpCode
);
/**
Initialize the instance context data.
@param[in] ArpService Pointer to the arp service context data this
instance belongs to.
@param[out] Instance Pointer to the instance context data.
@return None.
**/
VOID
ArpInitInstance (
IN ARP_SERVICE_DATA *ArpService,
OUT ARP_INSTANCE_DATA *Instance
);
/**
Process the Arp packets received from Mnp, the procedure conforms to RFC826.
@param[in] Context Pointer to the context data registerd to the
Event.
@return None.
**/
VOID
EFIAPI
ArpOnFrameRcvdDpc (
IN VOID *Context
);
/**
Queue ArpOnFrameRcvdDpc as a DPC at TPL_CALLBACK.
@param[in] Event The Event this notify function registered to.
@param[in] Context Pointer to the context data registerd to the
Event.
@return None.
**/
VOID
EFIAPI
ArpOnFrameRcvd (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Process the already sent arp packets.
@param[in] Context Pointer to the context data registerd to the
Event.
@return None.
**/
VOID
EFIAPI
ArpOnFrameSentDpc (
IN VOID *Context
);
/**
Request ArpOnFrameSentDpc as a DPC at TPL_CALLBACK.
@param[in] Event The Event this notify function registered to.
@param[in] Context Pointer to the context data registerd to the
Event.
@return None.
**/
VOID
EFIAPI
ArpOnFrameSent (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Process the arp cache olding and drive the retrying arp requests.
@param[in] Event The Event this notify function registered to.
@param[in] Context Pointer to the context data registerd to the
Event.
@return None.
**/
VOID
EFIAPI
ArpTimerHandler (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Cancel the arp request.
@param[in] Instance Pointer to the instance context data.
@param[in] TargetSwAddress Pointer to the buffer containing the target
software address to match the arp request.
@param[in] UserEvent The user event used to notify this request
cancellation.
@return The count of the cancelled requests.
**/
UINTN
ArpCancelRequest (
IN ARP_INSTANCE_DATA *Instance,
IN VOID *TargetSwAddress OPTIONAL,
IN EFI_EVENT UserEvent OPTIONAL
);
/**
Find the cache entry in the cache table.
@param[in] Instance Pointer to the instance context data.
@param[in] BySwAddress Set to TRUE to look for matching software protocol
addresses. Set to FALSE to look for matching
hardware protocol addresses.
@param[in] AddressBuffer Pointer to address buffer. Set to NULL to match
all addresses.
@param[out] EntryLength The size of an entry in the entries buffer.
@param[out] EntryCount The number of ARP cache entries that are found by
the specified criteria.
@param[out] Entries Pointer to the buffer that will receive the ARP
cache entries.
@param[in] Refresh Set to TRUE to refresh the timeout value of the
matching ARP cache entry.
@retval EFI_SUCCESS The requested ARP cache entries are copied into
the buffer.
@retval EFI_NOT_FOUND No matching entries found.
@retval EFI_OUT_OF_RESOURCE There is a memory allocation failure.
**/
EFI_STATUS
ArpFindCacheEntry (
IN ARP_INSTANCE_DATA *Instance,
IN BOOLEAN BySwAddress,
IN VOID *AddressBuffer OPTIONAL,
OUT UINT32 *EntryLength OPTIONAL,
OUT UINT32 *EntryCount OPTIONAL,
OUT EFI_ARP_FIND_DATA **Entries OPTIONAL,
IN BOOLEAN Refresh
);
#endif
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