NetworkPkg/UefiPxeBcDxe/PxeBcSupport.h - third_party/edk2 - Git at Google

 /** @file
   Support functions declaration for UefiPxeBc Driver.

   Copyright (c) 2007 - 2017, 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
   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 __EFI_PXEBC_SUPPORT_H__
 #define __EFI_PXEBC_SUPPORT_H__


 #define ICMP_DEST_UNREACHABLE      3
 #define ICMP_SOURCE_QUENCH         4
 #define ICMP_REDIRECT              5
 #define ICMP_ECHO_REQUEST          8
 #define ICMP_TIME_EXCEEDED         11
 #define ICMP_PARAMETER_PROBLEM     12


 /**
   Flush the previous configration using the new station Ip address.

   @param[in]   Private        Pointer to PxeBc private data.
   @param[in]   StationIp      Pointer to the station Ip address.
   @param[in]   SubnetMask     Pointer to the subnet mask address for v4.

   @retval EFI_SUCCESS         Successfully flushed the previous config.
   @retval Others              Failed to flush using the new station Ip.

 **/
 EFI_STATUS
 PxeBcFlushStationIp (
   PXEBC_PRIVATE_DATA       *Private,
   EFI_IP_ADDRESS           *StationIp,     OPTIONAL
   EFI_IP_ADDRESS           *SubnetMask     OPTIONAL
   );


 /**
   Notify callback function when an event is triggered.

   @param[in]  Event           The triggered event.
   @param[in]  Context         The opaque parameter to the function.

 **/
 VOID
 EFIAPI
 PxeBcCommonNotify (
   IN EFI_EVENT           Event,
   IN VOID                *Context
   );


 /**
   Perform arp resolution from the arp cache in PxeBcMode.

   @param  Mode           Pointer to EFI_PXE_BASE_CODE_MODE.
   @param  Ip4Addr        The Ip4 address for resolution.
   @param  MacAddress     The resoluted MAC address if the resolution is successful.
                          The value is undefined if resolution fails.

   @retval TRUE           Found a matched entry.
   @retval FALSE          Did not find a matched entry.

 **/
 BOOLEAN
 PxeBcCheckArpCache (
   IN  EFI_PXE_BASE_CODE_MODE    *Mode,
   IN  EFI_IPv4_ADDRESS          *Ip4Addr,
   OUT EFI_MAC_ADDRESS           *MacAddress
   );


 /**
   Update arp cache periodically.

   @param  Event              Pointer to EFI_PXE_BC_PROTOCOL.
   @param  Context            Context of the timer event.

 **/
 VOID
 EFIAPI
 PxeBcArpCacheUpdate (
   IN EFI_EVENT    Event,
   IN VOID         *Context
   );


 /**
   xxx

   @param  Event                 The event signaled.
   @param  Context               The context passed in by the event notifier.

 **/
 VOID
 EFIAPI
 PxeBcIcmpErrorUpdate (
   IN EFI_EVENT             Event,
   IN VOID                  *Context
   );


 /**
   xxx

   @param  Event                 The event signaled.
   @param  Context               The context passed in by the event notifier.

 **/
 VOID
 EFIAPI
 PxeBcIcmp6ErrorUpdate (
   IN EFI_EVENT             Event,
   IN VOID                  *Context
   );


 /**
   This function is to configure a UDPv4 instance for UdpWrite.

   @param[in]       Udp4                 The pointer to EFI_UDP4_PROTOCOL.
   @param[in]       StationIp            The pointer to the station address.
   @param[in]       SubnetMask           The pointer to the subnet mask.
   @param[in]       Gateway              The pointer to the gateway address.
   @param[in, out]  SrcPort              The pointer to the source port.
   @param[in]       DoNotFragment        If TRUE, fragment is not enabled.
                                         Otherwise, fragment is enabled.
   @param[in]       Ttl                  The time to live field of the IP header.
   @param[in]       ToS                  The type of service field of the IP header.

   @retval          EFI_SUCCESS          Successfully configured this instance.
   @retval          Others               Failed to configure this instance.

 **/
 EFI_STATUS
 PxeBcConfigUdp4Write (
   IN     EFI_UDP4_PROTOCOL  *Udp4,
   IN     EFI_IPv4_ADDRESS   *StationIp,
   IN     EFI_IPv4_ADDRESS   *SubnetMask,
   IN     EFI_IPv4_ADDRESS   *Gateway,
   IN OUT UINT16             *SrcPort,
   IN     BOOLEAN            DoNotFragment,
   IN     UINT8              Ttl,
   IN     UINT8              ToS
   );


 /**
   This function is to configure a UDPv6 instance for UdpWrite.

   @param[in]       Udp6                 Pointer to EFI_UDP6_PROTOCOL.
   @param[in]       StationIp            Pointer to the station address.
   @param[in, out]  SrcPort              Pointer to the source port.

   @retval          EFI_SUCCESS          Successfuly configured this instance.
   @retval          Others               Failed to configure this instance.

 **/
 EFI_STATUS
 PxeBcConfigUdp6Write (
   IN     EFI_UDP6_PROTOCOL  *Udp6,
   IN     EFI_IPv6_ADDRESS   *StationIp,
   IN OUT UINT16             *SrcPort
   );

 /**
   This function is to configure a UDPv4 instance for UdpWrite.

   @param[in]       Udp4                 Pointer to EFI_UDP4_PROTOCOL.
   @param[in]       Session              Pointer to the UDP4 session data.
   @param[in]       TimeoutEvent         The event for timeout.
   @param[in]       Gateway              Pointer to the gateway address.
   @param[in]       HeaderSize           An optional field which may be set to the length of a header
                                         at HeaderPtr to be prefixed to the data at BufferPtr.
   @param[in]       HeaderPtr            If HeaderSize is not NULL, a pointer to a header to be
                                         prefixed to the data at BufferPtr.
   @param[in]       BufferSize           A pointer to the size of the data at BufferPtr.
   @param[in]       BufferPtr            A pointer to the data to be written.

   @retval          EFI_SUCCESS          Successfully sent out data with Udp4Write.
   @retval          Others               Failed to send out data.

 **/
 EFI_STATUS
 PxeBcUdp4Write (
   IN EFI_UDP4_PROTOCOL       *Udp4,
   IN EFI_UDP4_SESSION_DATA   *Session,
   IN EFI_EVENT               TimeoutEvent,
   IN EFI_IPv4_ADDRESS        *Gateway      OPTIONAL,
   IN UINTN                   *HeaderSize   OPTIONAL,
   IN VOID                    *HeaderPtr    OPTIONAL,
   IN UINTN                   *BufferSize,
   IN VOID                    *BufferPtr
   );


 /**
   This function is to configure a UDPv6 instance for UdpWrite.

   @param[in]       Udp6                 Pointer to EFI_UDP6_PROTOCOL.
   @param[in]       Session              Pointer to the UDP6 session data.
   @param[in]       TimeoutEvent         The event for timeout.
   @param[in]       HeaderSize           An optional field which may be set to the length of a header
                                         at HeaderPtr to be prefixed to the data at BufferPtr.
   @param[in]       HeaderPtr            If HeaderSize is not NULL, a pointer to a header to be
                                         prefixed to the data at BufferPtr.
   @param[in]       BufferSize           A pointer to the size of the data at BufferPtr.
   @param[in]       BufferPtr            A pointer to the data to be written.

   @retval          EFI_SUCCESS          Successfully to send out data with Udp6Write.
   @retval          Others               Failed to send out data.

 **/
 EFI_STATUS
 PxeBcUdp6Write (
   IN EFI_UDP6_PROTOCOL       *Udp6,
   IN EFI_UDP6_SESSION_DATA   *Session,
   IN EFI_EVENT               TimeoutEvent,
   IN UINTN                   *HeaderSize   OPTIONAL,
   IN VOID                    *HeaderPtr    OPTIONAL,
   IN UINTN                   *BufferSize,
   IN VOID                    *BufferPtr
   );


 /**
   Check the received packet with the Ip filter.

   @param[in]  Mode                Pointer to mode data of PxeBc.
   @param[in]  Session             Pointer to the current UDPv4 session.
   @param[in]  OpFlags             Operation flag for UdpRead/UdpWrite.

   @retval     TRUE                Succesfully passed the Ip filter.
   @retval     FALSE               Failed to pass the Ip filter.

 **/
 BOOLEAN
 PxeBcCheckByIpFilter (
   IN EFI_PXE_BASE_CODE_MODE    *Mode,
   IN VOID                      *Session,
   IN UINT16                    OpFlags
   );


 /**
   Filter the received packet with the destination Ip.

   @param[in]       Mode           Pointer to mode data of PxeBc.
   @param[in]       Session        Pointer to the current UDPv4 session.
   @param[in, out]  DestIp         Pointer to the dest Ip address.
   @param[in]       OpFlags        Operation flag for UdpRead/UdpWrite.

   @retval     TRUE                Succesfully passed the IPv4 filter.
   @retval     FALSE               Failed to pass the IPv4 filter.

 **/
 BOOLEAN
 PxeBcCheckByDestIp (
   IN     EFI_PXE_BASE_CODE_MODE    *Mode,
   IN     VOID                      *Session,
   IN OUT EFI_IP_ADDRESS            *DestIp,
   IN     UINT16                    OpFlags
   );


 /**
   Check the received packet with the destination port.

   @param[in]       Mode           Pointer to mode data of PxeBc.
   @param[in]       Session        Pointer to the current UDPv4 session.
   @param[in, out]  DestPort       Pointer to the destination port.
   @param[in]       OpFlags        Operation flag for UdpRead/UdpWrite.

   @retval     TRUE                Succesfully passed the IPv4 filter.
   @retval     FALSE               Failed to pass the IPv4 filter.

 **/
 BOOLEAN
 PxeBcCheckByDestPort (
   IN     EFI_PXE_BASE_CODE_MODE    *Mode,
   IN     VOID                      *Session,
   IN OUT UINT16                    *DestPort,
   IN     UINT16                    OpFlags
   );


 /**
   Filter the received packet with the source Ip.

   @param[in]       Mode           Pointer to mode data of PxeBc.
   @param[in]       Session        Pointer to the current UDPv4 session.
   @param[in, out]  SrcIp          Pointer to the source Ip address.
   @param[in]       OpFlags        Operation flag for UdpRead/UdpWrite.

   @retval     TRUE                Succesfully passed the IPv4 filter.
   @retval     FALSE               Failed to pass the IPv4 filter.

 **/
 BOOLEAN
 PxeBcFilterBySrcIp (
   IN     EFI_PXE_BASE_CODE_MODE    *Mode,
   IN     VOID                      *Session,
   IN OUT EFI_IP_ADDRESS            *SrcIp,
   IN     UINT16                    OpFlags
   );


 /**
   Filter the received packet with the source port.

   @param[in]       Mode           Pointer to mode data of PxeBc.
   @param[in]       Session        Pointer to the current UDPv4 session.
   @param[in, out]  SrcPort        Pointer to the source port.
   @param[in]       OpFlags        Operation flag for UdpRead/UdpWrite.

   @retval     TRUE                Succesfully passed the IPv4 filter.
   @retval     FALSE               Failed to pass the IPv4 filter.

 **/
 BOOLEAN
 PxeBcFilterBySrcPort (
   IN     EFI_PXE_BASE_CODE_MODE    *Mode,
   IN     VOID                      *Session,
   IN OUT UINT16                    *SrcPort,
   IN     UINT16                    OpFlags
   );


 /**
   This function is to receive packet with Udp4Read.

   @param[in]       Udp4                 Pointer to EFI_UDP4_PROTOCOL.
   @param[in]       Token                Pointer to EFI_UDP4_COMPLETION_TOKEN.
   @param[in]       Mode                 Pointer to EFI_PXE_BASE_CODE_MODE.
   @param[in]       TimeoutEvent         The event for timeout.
   @param[in]       OpFlags              The UDP operation flags.
   @param[in]       IsDone               Pointer to IsDone flag.
   @param[out]      IsMatched            Pointer to IsMatched flag.
   @param[in, out]  DestIp               Pointer to destination address.
   @param[in, out]  DestPort             Pointer to destination port.
   @param[in, out]  SrcIp                Pointer to source address.
   @param[in, out]  SrcPort              Pointer to source port.

   @retval          EFI_SUCCESS          Successfully read data with Udp4.
   @retval          Others               Failed to send out data.

 **/
 EFI_STATUS
 PxeBcUdp4Read (
   IN     EFI_UDP4_PROTOCOL            *Udp4,
   IN     EFI_UDP4_COMPLETION_TOKEN    *Token,
   IN     EFI_PXE_BASE_CODE_MODE       *Mode,
   IN     EFI_EVENT                    TimeoutEvent,
   IN     UINT16                       OpFlags,
   IN     BOOLEAN                      *IsDone,
      OUT BOOLEAN                      *IsMatched,
   IN OUT EFI_IP_ADDRESS               *DestIp      OPTIONAL,
   IN OUT EFI_PXE_BASE_CODE_UDP_PORT   *DestPort    OPTIONAL,
   IN OUT EFI_IP_ADDRESS               *SrcIp       OPTIONAL,
   IN OUT EFI_PXE_BASE_CODE_UDP_PORT   *SrcPort     OPTIONAL
   );


 /**
   This function is to receive packet with Udp6Read.

   @param[in]       Udp6                 Pointer to EFI_UDP6_PROTOCOL.
   @param[in]       Token                Pointer to EFI_UDP6_COMPLETION_TOKEN.
   @param[in]       Mode                 Pointer to EFI_PXE_BASE_CODE_MODE.
   @param[in]       TimeoutEvent         The event for timeout.
   @param[in]       OpFlags              The UDP operation flags.
   @param[in]       IsDone               Pointer to IsDone flag.
   @param[out]      IsMatched            Pointer to IsMatched flag.
   @param[in, out]  DestIp               Pointer to destination address.
   @param[in, out]  DestPort             Pointer to destination port.
   @param[in, out]  SrcIp                Pointer to source address.
   @param[in, out]  SrcPort              Pointer to source port.

   @retval          EFI_SUCCESS          Successfully read data with Udp6.
   @retval          Others               Failed to send out data.

 **/
 EFI_STATUS
 PxeBcUdp6Read (
   IN     EFI_UDP6_PROTOCOL            *Udp6,
   IN     EFI_UDP6_COMPLETION_TOKEN    *Token,
   IN     EFI_PXE_BASE_CODE_MODE       *Mode,
   IN     EFI_EVENT                    TimeoutEvent,
   IN     UINT16                       OpFlags,
   IN     BOOLEAN                      *IsDone,
      OUT BOOLEAN                      *IsMatched,
   IN OUT EFI_IP_ADDRESS               *DestIp      OPTIONAL,
   IN OUT EFI_PXE_BASE_CODE_UDP_PORT   *DestPort    OPTIONAL,
   IN OUT EFI_IP_ADDRESS               *SrcIp       OPTIONAL,
   IN OUT EFI_PXE_BASE_CODE_UDP_PORT   *SrcPort     OPTIONAL
   );


 /**
   This function is to display the IPv4 address.

   @param[in]  Ip        Pointer to the IPv4 address.

 **/
 VOID
 PxeBcShowIp4Addr (
   IN EFI_IPv4_ADDRESS   *Ip
   );


 /**
   This function is to display the IPv6 address.

   @param[in]  Ip        Pointer to the IPv6 address.

 **/
 VOID
 PxeBcShowIp6Addr (
   IN EFI_IPv6_ADDRESS   *Ip
   );


 /**
   This function is to convert UINTN to ASCII string with required format.

   @param[in]  Number         Numeric value to be converted.
   @param[in]  Buffer         Pointer to the buffer for ASCII string.
   @param[in]  Length         Length of the required format.

 **/
 VOID
 PxeBcUintnToAscDecWithFormat (
   IN UINTN                       Number,
   IN UINT8                       *Buffer,
   IN INTN                        Length
   );


 /**
   This function is to convert a UINTN to a ASCII string, and return the
   actual length of the buffer.

   @param[in]  Number         Numeric value to be converted.
   @param[in]  Buffer         Pointer to the buffer for ASCII string.
   @param[in]  BufferSize     The maxsize of the buffer.

   @return     Length         The actual length of the ASCII string.

 **/
 UINTN
 PxeBcUintnToAscDec (
   IN UINTN               Number,
   IN UINT8               *Buffer,
   IN UINTN               BufferSize
   );

 /**
   This function is to convert unicode hex number to a UINT8.

   @param[out]  Digit                   The converted UINT8 for output.
   @param[in]   Char                    The unicode hex number to be converted.

   @retval      EFI_SUCCESS             Successfully converted the unicode hex.
   @retval      EFI_INVALID_PARAMETER   Failed to convert the unicode hex.

 **/
 EFI_STATUS
 PxeBcUniHexToUint8 (
   OUT UINT8                *Digit,
   IN  CHAR16               Char
   );

 /**
   Calculate the elapsed time.

   @param[in]      Private      The pointer to PXE private data

 **/
 VOID
 CalcElapsedTime (
   IN     PXEBC_PRIVATE_DATA     *Private
   );

 /**
   Get the Nic handle using any child handle in the IPv4 stack.

   @param[in]  ControllerHandle    Pointer to child handle over IPv4.

   @return NicHandle               The pointer to the Nic handle.

 **/
 EFI_HANDLE
 PxeBcGetNicByIp4Children (
   IN EFI_HANDLE                 ControllerHandle
   );

 /**
   Get the Nic handle using any child handle in the IPv6 stack.

   @param[in]  ControllerHandle    Pointer to child handle over IPv6.

   @return NicHandle               The pointer to the Nic handle.

 **/
 EFI_HANDLE
 PxeBcGetNicByIp6Children (
   IN EFI_HANDLE                  ControllerHandle
   );
 #endif
	/** @file
	Support functions declaration for UefiPxeBc Driver.

	Copyright (c) 2007 - 2017, 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
	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 __EFI_PXEBC_SUPPORT_H__
	#define __EFI_PXEBC_SUPPORT_H__


	#define ICMP_DEST_UNREACHABLE 3
	#define ICMP_SOURCE_QUENCH 4
	#define ICMP_REDIRECT 5
	#define ICMP_ECHO_REQUEST 8
	#define ICMP_TIME_EXCEEDED 11
	#define ICMP_PARAMETER_PROBLEM 12



	/**
	Flush the previous configration using the new station Ip address.

	@param[in] Private Pointer to PxeBc private data.
	@param[in] StationIp Pointer to the station Ip address.
	@param[in] SubnetMask Pointer to the subnet mask address for v4.

	@retval EFI_SUCCESS Successfully flushed the previous config.
	@retval Others Failed to flush using the new station Ip.

	**/
	EFI_STATUS
	PxeBcFlushStationIp (
	PXEBC_PRIVATE_DATA *Private,
	EFI_IP_ADDRESS *StationIp, OPTIONAL
	EFI_IP_ADDRESS *SubnetMask OPTIONAL
	);


	/**
	Notify callback function when an event is triggered.

	@param[in] Event The triggered event.
	@param[in] Context The opaque parameter to the function.

	**/
	VOID
	EFIAPI
	PxeBcCommonNotify (
	IN EFI_EVENT Event,
	IN VOID *Context
	);


	/**
	Perform arp resolution from the arp cache in PxeBcMode.

	@param Mode Pointer to EFI_PXE_BASE_CODE_MODE.
	@param Ip4Addr The Ip4 address for resolution.
	@param MacAddress The resoluted MAC address if the resolution is successful.
	The value is undefined if resolution fails.

	@retval TRUE Found a matched entry.
	@retval FALSE Did not find a matched entry.

	**/
	BOOLEAN
	PxeBcCheckArpCache (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN EFI_IPv4_ADDRESS *Ip4Addr,
	OUT EFI_MAC_ADDRESS *MacAddress
	);


	/**
	Update arp cache periodically.

	@param Event Pointer to EFI_PXE_BC_PROTOCOL.
	@param Context Context of the timer event.

	**/
	VOID
	EFIAPI
	PxeBcArpCacheUpdate (
	IN EFI_EVENT Event,
	IN VOID *Context
	);


	/**
	xxx

	@param Event The event signaled.
	@param Context The context passed in by the event notifier.

	**/
	VOID
	EFIAPI
	PxeBcIcmpErrorUpdate (
	IN EFI_EVENT Event,
	IN VOID *Context
	);


	/**
	xxx

	@param Event The event signaled.
	@param Context The context passed in by the event notifier.

	**/
	VOID
	EFIAPI
	PxeBcIcmp6ErrorUpdate (
	IN EFI_EVENT Event,
	IN VOID *Context
	);


	/**
	This function is to configure a UDPv4 instance for UdpWrite.

	@param[in] Udp4 The pointer to EFI_UDP4_PROTOCOL.
	@param[in] StationIp The pointer to the station address.
	@param[in] SubnetMask The pointer to the subnet mask.
	@param[in] Gateway The pointer to the gateway address.
	@param[in, out] SrcPort The pointer to the source port.
	@param[in] DoNotFragment If TRUE, fragment is not enabled.
	Otherwise, fragment is enabled.
	@param[in] Ttl The time to live field of the IP header.
	@param[in] ToS The type of service field of the IP header.

	@retval EFI_SUCCESS Successfully configured this instance.
	@retval Others Failed to configure this instance.

	**/
	EFI_STATUS
	PxeBcConfigUdp4Write (
	IN EFI_UDP4_PROTOCOL *Udp4,
	IN EFI_IPv4_ADDRESS *StationIp,
	IN EFI_IPv4_ADDRESS *SubnetMask,
	IN EFI_IPv4_ADDRESS *Gateway,
	IN OUT UINT16 *SrcPort,
	IN BOOLEAN DoNotFragment,
	IN UINT8 Ttl,
	IN UINT8 ToS
	);


	/**
	This function is to configure a UDPv6 instance for UdpWrite.

	@param[in] Udp6 Pointer to EFI_UDP6_PROTOCOL.
	@param[in] StationIp Pointer to the station address.
	@param[in, out] SrcPort Pointer to the source port.

	@retval EFI_SUCCESS Successfuly configured this instance.
	@retval Others Failed to configure this instance.

	**/
	EFI_STATUS
	PxeBcConfigUdp6Write (
	IN EFI_UDP6_PROTOCOL *Udp6,
	IN EFI_IPv6_ADDRESS *StationIp,
	IN OUT UINT16 *SrcPort
	);

	/**
	This function is to configure a UDPv4 instance for UdpWrite.

	@param[in] Udp4 Pointer to EFI_UDP4_PROTOCOL.
	@param[in] Session Pointer to the UDP4 session data.
	@param[in] TimeoutEvent The event for timeout.
	@param[in] Gateway Pointer to the gateway address.
	@param[in] HeaderSize An optional field which may be set to the length of a header
	at HeaderPtr to be prefixed to the data at BufferPtr.
	@param[in] HeaderPtr If HeaderSize is not NULL, a pointer to a header to be
	prefixed to the data at BufferPtr.
	@param[in] BufferSize A pointer to the size of the data at BufferPtr.
	@param[in] BufferPtr A pointer to the data to be written.

	@retval EFI_SUCCESS Successfully sent out data with Udp4Write.
	@retval Others Failed to send out data.

	**/
	EFI_STATUS
	PxeBcUdp4Write (
	IN EFI_UDP4_PROTOCOL *Udp4,
	IN EFI_UDP4_SESSION_DATA *Session,
	IN EFI_EVENT TimeoutEvent,
	IN EFI_IPv4_ADDRESS *Gateway OPTIONAL,
	IN UINTN *HeaderSize OPTIONAL,
	IN VOID *HeaderPtr OPTIONAL,
	IN UINTN *BufferSize,
	IN VOID *BufferPtr
	);


	/**
	This function is to configure a UDPv6 instance for UdpWrite.

	@param[in] Udp6 Pointer to EFI_UDP6_PROTOCOL.
	@param[in] Session Pointer to the UDP6 session data.
	@param[in] TimeoutEvent The event for timeout.
	@param[in] HeaderSize An optional field which may be set to the length of a header
	at HeaderPtr to be prefixed to the data at BufferPtr.
	@param[in] HeaderPtr If HeaderSize is not NULL, a pointer to a header to be
	prefixed to the data at BufferPtr.
	@param[in] BufferSize A pointer to the size of the data at BufferPtr.
	@param[in] BufferPtr A pointer to the data to be written.

	@retval EFI_SUCCESS Successfully to send out data with Udp6Write.
	@retval Others Failed to send out data.

	**/
	EFI_STATUS
	PxeBcUdp6Write (
	IN EFI_UDP6_PROTOCOL *Udp6,
	IN EFI_UDP6_SESSION_DATA *Session,
	IN EFI_EVENT TimeoutEvent,
	IN UINTN *HeaderSize OPTIONAL,
	IN VOID *HeaderPtr OPTIONAL,
	IN UINTN *BufferSize,
	IN VOID *BufferPtr
	);


	/**
	Check the received packet with the Ip filter.

	@param[in] Mode Pointer to mode data of PxeBc.
	@param[in] Session Pointer to the current UDPv4 session.
	@param[in] OpFlags Operation flag for UdpRead/UdpWrite.

	@retval TRUE Succesfully passed the Ip filter.
	@retval FALSE Failed to pass the Ip filter.

	**/
	BOOLEAN
	PxeBcCheckByIpFilter (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN VOID *Session,
	IN UINT16 OpFlags
	);


	/**
	Filter the received packet with the destination Ip.

	@param[in] Mode Pointer to mode data of PxeBc.
	@param[in] Session Pointer to the current UDPv4 session.
	@param[in, out] DestIp Pointer to the dest Ip address.
	@param[in] OpFlags Operation flag for UdpRead/UdpWrite.

	@retval TRUE Succesfully passed the IPv4 filter.
	@retval FALSE Failed to pass the IPv4 filter.

	**/
	BOOLEAN
	PxeBcCheckByDestIp (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN VOID *Session,
	IN OUT EFI_IP_ADDRESS *DestIp,
	IN UINT16 OpFlags
	);


	/**
	Check the received packet with the destination port.

	@param[in] Mode Pointer to mode data of PxeBc.
	@param[in] Session Pointer to the current UDPv4 session.
	@param[in, out] DestPort Pointer to the destination port.
	@param[in] OpFlags Operation flag for UdpRead/UdpWrite.

	@retval TRUE Succesfully passed the IPv4 filter.
	@retval FALSE Failed to pass the IPv4 filter.

	**/
	BOOLEAN
	PxeBcCheckByDestPort (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN VOID *Session,
	IN OUT UINT16 *DestPort,
	IN UINT16 OpFlags
	);


	/**
	Filter the received packet with the source Ip.

	@param[in] Mode Pointer to mode data of PxeBc.
	@param[in] Session Pointer to the current UDPv4 session.
	@param[in, out] SrcIp Pointer to the source Ip address.
	@param[in] OpFlags Operation flag for UdpRead/UdpWrite.

	@retval TRUE Succesfully passed the IPv4 filter.
	@retval FALSE Failed to pass the IPv4 filter.

	**/
	BOOLEAN
	PxeBcFilterBySrcIp (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN VOID *Session,
	IN OUT EFI_IP_ADDRESS *SrcIp,
	IN UINT16 OpFlags
	);


	/**
	Filter the received packet with the source port.

	@param[in] Mode Pointer to mode data of PxeBc.
	@param[in] Session Pointer to the current UDPv4 session.
	@param[in, out] SrcPort Pointer to the source port.
	@param[in] OpFlags Operation flag for UdpRead/UdpWrite.

	@retval TRUE Succesfully passed the IPv4 filter.
	@retval FALSE Failed to pass the IPv4 filter.

	**/
	BOOLEAN
	PxeBcFilterBySrcPort (
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN VOID *Session,
	IN OUT UINT16 *SrcPort,
	IN UINT16 OpFlags
	);


	/**
	This function is to receive packet with Udp4Read.

	@param[in] Udp4 Pointer to EFI_UDP4_PROTOCOL.
	@param[in] Token Pointer to EFI_UDP4_COMPLETION_TOKEN.
	@param[in] Mode Pointer to EFI_PXE_BASE_CODE_MODE.
	@param[in] TimeoutEvent The event for timeout.
	@param[in] OpFlags The UDP operation flags.
	@param[in] IsDone Pointer to IsDone flag.
	@param[out] IsMatched Pointer to IsMatched flag.
	@param[in, out] DestIp Pointer to destination address.
	@param[in, out] DestPort Pointer to destination port.
	@param[in, out] SrcIp Pointer to source address.
	@param[in, out] SrcPort Pointer to source port.

	@retval EFI_SUCCESS Successfully read data with Udp4.
	@retval Others Failed to send out data.

	**/
	EFI_STATUS
	PxeBcUdp4Read (
	IN EFI_UDP4_PROTOCOL *Udp4,
	IN EFI_UDP4_COMPLETION_TOKEN *Token,
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN EFI_EVENT TimeoutEvent,
	IN UINT16 OpFlags,
	IN BOOLEAN *IsDone,
	OUT BOOLEAN *IsMatched,
	IN OUT EFI_IP_ADDRESS *DestIp OPTIONAL,
	IN OUT EFI_PXE_BASE_CODE_UDP_PORT *DestPort OPTIONAL,
	IN OUT EFI_IP_ADDRESS *SrcIp OPTIONAL,
	IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPort OPTIONAL
	);


	/**
	This function is to receive packet with Udp6Read.

	@param[in] Udp6 Pointer to EFI_UDP6_PROTOCOL.
	@param[in] Token Pointer to EFI_UDP6_COMPLETION_TOKEN.
	@param[in] Mode Pointer to EFI_PXE_BASE_CODE_MODE.
	@param[in] TimeoutEvent The event for timeout.
	@param[in] OpFlags The UDP operation flags.
	@param[in] IsDone Pointer to IsDone flag.
	@param[out] IsMatched Pointer to IsMatched flag.
	@param[in, out] DestIp Pointer to destination address.
	@param[in, out] DestPort Pointer to destination port.
	@param[in, out] SrcIp Pointer to source address.
	@param[in, out] SrcPort Pointer to source port.

	@retval EFI_SUCCESS Successfully read data with Udp6.
	@retval Others Failed to send out data.

	**/
	EFI_STATUS
	PxeBcUdp6Read (
	IN EFI_UDP6_PROTOCOL *Udp6,
	IN EFI_UDP6_COMPLETION_TOKEN *Token,
	IN EFI_PXE_BASE_CODE_MODE *Mode,
	IN EFI_EVENT TimeoutEvent,
	IN UINT16 OpFlags,
	IN BOOLEAN *IsDone,
	OUT BOOLEAN *IsMatched,
	IN OUT EFI_IP_ADDRESS *DestIp OPTIONAL,
	IN OUT EFI_PXE_BASE_CODE_UDP_PORT *DestPort OPTIONAL,
	IN OUT EFI_IP_ADDRESS *SrcIp OPTIONAL,
	IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPort OPTIONAL
	);


	/**
	This function is to display the IPv4 address.

	@param[in] Ip Pointer to the IPv4 address.

	**/
	VOID
	PxeBcShowIp4Addr (
	IN EFI_IPv4_ADDRESS *Ip
	);


	/**
	This function is to display the IPv6 address.

	@param[in] Ip Pointer to the IPv6 address.

	**/
	VOID
	PxeBcShowIp6Addr (
	IN EFI_IPv6_ADDRESS *Ip
	);


	/**
	This function is to convert UINTN to ASCII string with required format.

	@param[in] Number Numeric value to be converted.
	@param[in] Buffer Pointer to the buffer for ASCII string.
	@param[in] Length Length of the required format.

	**/
	VOID
	PxeBcUintnToAscDecWithFormat (
	IN UINTN Number,
	IN UINT8 *Buffer,
	IN INTN Length
	);


	/**
	This function is to convert a UINTN to a ASCII string, and return the
	actual length of the buffer.

	@param[in] Number Numeric value to be converted.
	@param[in] Buffer Pointer to the buffer for ASCII string.
	@param[in] BufferSize The maxsize of the buffer.

	@return Length The actual length of the ASCII string.

	**/
	UINTN
	PxeBcUintnToAscDec (
	IN UINTN Number,
	IN UINT8 *Buffer,
	IN UINTN BufferSize
	);

	/**
	This function is to convert unicode hex number to a UINT8.

	@param[out] Digit The converted UINT8 for output.
	@param[in] Char The unicode hex number to be converted.

	@retval EFI_SUCCESS Successfully converted the unicode hex.
	@retval EFI_INVALID_PARAMETER Failed to convert the unicode hex.

	**/
	EFI_STATUS
	PxeBcUniHexToUint8 (
	OUT UINT8 *Digit,
	IN CHAR16 Char
	);

	/**
	Calculate the elapsed time.

	@param[in] Private The pointer to PXE private data

	**/
	VOID
	CalcElapsedTime (
	IN PXEBC_PRIVATE_DATA *Private
	);

	/**
	Get the Nic handle using any child handle in the IPv4 stack.

	@param[in] ControllerHandle Pointer to child handle over IPv4.

	@return NicHandle The pointer to the Nic handle.

	**/
	EFI_HANDLE
	PxeBcGetNicByIp4Children (
	IN EFI_HANDLE ControllerHandle
	);

	/**
	Get the Nic handle using any child handle in the IPv6 stack.

	@param[in] ControllerHandle Pointer to child handle over IPv6.

	@return NicHandle The pointer to the Nic handle.

	**/
	EFI_HANDLE
	PxeBcGetNicByIp6Children (
	IN EFI_HANDLE ControllerHandle
	);
	#endif