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From: "Wang, Jian J" <jian.j.wang@intel.com>
To: "Fu, Siyuan" <siyuan.fu@intel.com>,
	"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Wu, Hao A" <hao.a.wu@intel.com>,
	"Ni, Ruiyu" <ruiyu.ni@intel.com>,
	"Zeng, Star" <star.zeng@intel.com>,
	"Wu, Jiaxin" <jiaxin.wu@intel.com>
Subject: Re: [PATCH v2 5/6] MdeModulePkg: Delete UefiPxeBcDxe in MdeModulePkg.
Date: Thu, 20 Dec 2018 04:56:21 +0000	[thread overview]
Message-ID: <D827630B58408649ACB04F44C510003624ECE983@SHSMSX103.ccr.corp.intel.com> (raw)
In-Reply-To: <20181220014110.20324-6-siyuan.fu@intel.com>


Reviewed-by: Jian J Wang <jian.j.wang@intel.com>


> -----Original Message-----
> From: Fu, Siyuan
> Sent: Thursday, December 20, 2018 9:41 AM
> To: edk2-devel@lists.01.org
> Cc: Wang, Jian J <jian.j.wang@intel.com>; Wu, Hao A <hao.a.wu@intel.com>;
> Ni, Ruiyu <ruiyu.ni@intel.com>; Zeng, Star <star.zeng@intel.com>; Wu, Jiaxin
> <jiaxin.wu@intel.com>
> Subject: [PATCH v2 5/6] MdeModulePkg: Delete UefiPxeBcDxe in
> MdeModulePkg.
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1278
> 
> This patch is to delete the UefiPxeBcDxe driver in MdeModulePkg. The
> driver will not be maintained and can't co-work with the dual-stack
> UefiPxeBcDxe in NetworkPkg.
> 
> People should use below NetworkPkg drivers instead:
>   NetworkPkg/UefiPxeBcDxe/UefiPxeBcDxe.inf
> Which is actively maintained with more bug fixes and new feature support.
> 
> Cc: Jian J Wang <jian.j.wang@intel.com>
> Cc: Hao Wu <hao.a.wu@intel.com>
> Cc: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Star Zeng <star.zeng@intel.com>
> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
> ---
> 
> Notes:
>     v2:
>     Break original patch to separate commits per module.
> 
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/ComponentName.c        |
> 365 ---
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c            | 1999 --
> -----------
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c          |  665 ---
> --
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c            | 2989 --
> ------------------
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c           |  454 --
> -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c         |  221 -
> -
>  MdeModulePkg/MdeModulePkg.dsc                                      |    1 -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h            |  502 --
> --
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.h          |  102 -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h            |  189 --
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.h           |  137 -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h         |  134 -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxe.uni      |   25
> -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxeExtra.uni |
> 20 -
>  MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf       |  102
> -
>  15 files changed, 7905 deletions(-)
> 
> diff --git
> a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/ComponentName.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/ComponentName.c
> deleted file mode 100644
> index a085ef61f341..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/ComponentName.c
> +++ /dev/null
> @@ -1,365 +0,0 @@
> -/** @file
> -
> -Copyright (c) 2007 - 2018, 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.
> -
> -**/
> -
> -
> -#include "PxeBcImpl.h"
> -
> -//
> -// EFI Component Name Functions
> -//
> -/**
> -  Retrieves a Unicode string that is the user readable name of the driver.
> -
> -  This function retrieves the user readable name of a driver in the form of a
> -  Unicode string. If the driver specified by This has a user readable name in
> -  the language specified by Language, then a pointer to the driver name is
> -  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
> -  by This does not support the language specified by Language,
> -  then EFI_UNSUPPORTED is returned.
> -
> -  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME2_PROTOCOL or
> -                                EFI_COMPONENT_NAME_PROTOCOL instance.
> -
> -  @param[in]  Language          A pointer to a Null-terminated ASCII string
> -                                array indicating the language. This is the
> -                                language of the driver name that the caller is
> -                                requesting, and it must match one of the
> -                                languages specified in SupportedLanguages. The
> -                                number of languages supported by a driver is up
> -                                to the driver writer. Language is specified
> -                                in RFC 4646 or ISO 639-2 language code format.
> -
> -  @param[out]  DriverName       A pointer to the Unicode string to return.
> -                                This Unicode string is the name of the
> -                                driver specified by This in the language
> -                                specified by Language.
> -
> -  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
> -                                This and the language specified by Language was
> -                                returned in DriverName.
> -
> -  @retval EFI_INVALID_PARAMETER Language is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER DriverName is NULL.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This does not support
> -                                the language specified by Language.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcComponentNameGetDriverName (
> -  IN  EFI_COMPONENT_NAME_PROTOCOL  * This,
> -  IN  CHAR8                        *Language,
> -  OUT CHAR16                       **DriverName
> -  );
> -
> -/**
> -  Retrieves a Unicode string that is the user readable name of the controller
> -  that is being managed by a driver.
> -
> -  This function retrieves the user readable name of the controller specified by
> -  ControllerHandle and ChildHandle in the form of a Unicode string. If the
> -  driver specified by This has a user readable name in the language specified by
> -  Language, then a pointer to the controller name is returned in ControllerName,
> -  and EFI_SUCCESS is returned.  If the driver specified by This is not currently
> -  managing the controller specified by ControllerHandle and ChildHandle,
> -  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
> -  support the language specified by Language, then EFI_UNSUPPORTED is
> returned.
> -
> -  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME2_PROTOCOL or
> -                                EFI_COMPONENT_NAME_PROTOCOL instance.
> -
> -  @param[in]  ControllerHandle  The handle of a controller that the driver
> -                                specified by This is managing.  This handle
> -                                specifies the controller whose name is to be
> -                                returned.
> -
> -  @param[in]  ChildHandle       The handle of the child controller to retrieve
> -                                the name of.  This is an optional parameter that
> -                                may be NULL.  It will be NULL for device
> -                                drivers.  It will also be NULL for a bus drivers
> -                                that wish to retrieve the name of the bus
> -                                controller.  It will not be NULL for a bus
> -                                driver that wishes to retrieve the name of a
> -                                child controller.
> -
> -  @param[in]  Language          A pointer to a Null-terminated ASCII string
> -                                array indicating the language.  This is the
> -                                language of the driver name that the caller is
> -                                requesting, and it must match one of the
> -                                languages specified in SupportedLanguages. The
> -                                number of languages supported by a driver is up
> -                                to the driver writer. Language is specified in
> -                                RFC 4646 or ISO 639-2 language code format.
> -
> -  @param[out]  ControllerName   A pointer to the Unicode string to return.
> -                                This Unicode string is the name of the
> -                                controller specified by ControllerHandle and
> -                                ChildHandle in the language specified by
> -                                Language from the point of view of the driver
> -                                specified by This.
> -
> -  @retval EFI_SUCCESS           The Unicode string for the user readable name in
> -                                the language specified by Language for the
> -                                driver specified by This was returned in
> -                                DriverName.
> -
> -  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
> -                                EFI_HANDLE.
> -
> -  @retval EFI_INVALID_PARAMETER Language is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
> -                                managing the controller specified by
> -                                ControllerHandle and ChildHandle.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This does not support
> -                                the language specified by Language.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcComponentNameGetControllerName (
> -  IN  EFI_COMPONENT_NAME_PROTOCOL  * This,
> -  IN  EFI_HANDLE                   ControllerHandle,
> -  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,
> -  IN  CHAR8                        *Language,
> -  OUT CHAR16                       **ControllerName
> -  );
> -
> -//
> -// EFI Component Name Protocol
> -//
> -GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL
> gPxeBcComponentName = {
> -  PxeBcComponentNameGetDriverName,
> -  PxeBcComponentNameGetControllerName,
> -  "eng"
> -};
> -
> -GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL
> gPxeBcComponentName2 = {
> -  (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)
> PxeBcComponentNameGetDriverName,
> -  (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME)
> PxeBcComponentNameGetControllerName,
> -  "en"
> -};
> -
> -GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE
> mPxeBcDriverNameTable[] = {
> -  {
> -    "eng;en",
> -    L"UEFI PXE Base Code Driver"
> -  },
> -  {
> -    NULL,
> -    NULL
> -  }
> -};
> -
> -GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE
> mPxeBcControllerNameTable[] = {
> -  {
> -    "eng;en",
> -    L"PXE Controller"
> -  },
> -  {
> -    NULL,
> -    NULL
> -  }
> -};
> -
> -/**
> -  Retrieves a Unicode string that is the user readable name of the driver.
> -
> -  This function retrieves the user readable name of a driver in the form of a
> -  Unicode string. If the driver specified by This has a user readable name in
> -  the language specified by Language, then a pointer to the driver name is
> -  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
> -  by This does not support the language specified by Language,
> -  then EFI_UNSUPPORTED is returned.
> -
> -  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME2_PROTOCOL or
> -                                EFI_COMPONENT_NAME_PROTOCOL instance.
> -
> -  @param[in]  Language          A pointer to a Null-terminated ASCII string
> -                                array indicating the language. This is the
> -                                language of the driver name that the caller is
> -                                requesting, and it must match one of the
> -                                languages specified in SupportedLanguages. The
> -                                number of languages supported by a driver is up
> -                                to the driver writer. Language is specified
> -                                in RFC 4646 or ISO 639-2 language code format.
> -
> -  @param[out]  DriverName       A pointer to the Unicode string to return.
> -                                This Unicode string is the name of the
> -                                driver specified by This in the language
> -                                specified by Language.
> -
> -  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
> -                                This and the language specified by Language was
> -                                returned in DriverName.
> -
> -  @retval EFI_INVALID_PARAMETER Language is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER DriverName is NULL.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This does not support
> -                                the language specified by Language.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcComponentNameGetDriverName (
> -  IN  EFI_COMPONENT_NAME_PROTOCOL  * This,
> -  IN  CHAR8                        *Language,
> -  OUT CHAR16                       **DriverName
> -  )
> -{
> -  return LookupUnicodeString2 (
> -          Language,
> -          This->SupportedLanguages,
> -          mPxeBcDriverNameTable,
> -          DriverName,
> -          (BOOLEAN)(This == &gPxeBcComponentName)
> -          );
> -}
> -
> -/**
> -  Retrieves a Unicode string that is the user readable name of the controller
> -  that is being managed by a driver.
> -
> -  This function retrieves the user readable name of the controller specified by
> -  ControllerHandle and ChildHandle in the form of a Unicode string. If the
> -  driver specified by This has a user readable name in the language specified by
> -  Language, then a pointer to the controller name is returned in ControllerName,
> -  and EFI_SUCCESS is returned.  If the driver specified by This is not currently
> -  managing the controller specified by ControllerHandle and ChildHandle,
> -  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
> -  support the language specified by Language, then EFI_UNSUPPORTED is
> returned.
> -
> -  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME2_PROTOCOL or
> -                                EFI_COMPONENT_NAME_PROTOCOL instance.
> -
> -  @param[in]  ControllerHandle  The handle of a controller that the driver
> -                                specified by This is managing.  This handle
> -                                specifies the controller whose name is to be
> -                                returned.
> -
> -  @param[in]  ChildHandle       The handle of the child controller to retrieve
> -                                the name of.  This is an optional parameter that
> -                                may be NULL.  It will be NULL for device
> -                                drivers.  It will also be NULL for a bus drivers
> -                                that wish to retrieve the name of the bus
> -                                controller.  It will not be NULL for a bus
> -                                driver that wishes to retrieve the name of a
> -                                child controller.
> -
> -  @param[in]  Language          A pointer to a Null-terminated ASCII string
> -                                array indicating the language.  This is the
> -                                language of the driver name that the caller is
> -                                requesting, and it must match one of the
> -                                languages specified in SupportedLanguages. The
> -                                number of languages supported by a driver is up
> -                                to the driver writer. Language is specified in
> -                                RFC 4646 or ISO 639-2 language code format.
> -
> -  @param[out]  ControllerName   A pointer to the Unicode string to return.
> -                                This Unicode string is the name of the
> -                                controller specified by ControllerHandle and
> -                                ChildHandle in the language specified by
> -                                Language from the point of view of the driver
> -                                specified by This.
> -
> -  @retval EFI_SUCCESS           The Unicode string for the user readable name in
> -                                the language specified by Language for the
> -                                driver specified by This was returned in
> -                                DriverName.
> -
> -  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
> -                                EFI_HANDLE.
> -
> -  @retval EFI_INVALID_PARAMETER Language is NULL.
> -
> -  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
> -                                managing the controller specified by
> -                                ControllerHandle and ChildHandle.
> -
> -  @retval EFI_UNSUPPORTED       The driver specified by This does not support
> -                                the language specified by Language.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcComponentNameGetControllerName (
> -  IN  EFI_COMPONENT_NAME_PROTOCOL  * This,
> -  IN  EFI_HANDLE                   ControllerHandle,
> -  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,
> -  IN  CHAR8                        *Language,
> -  OUT CHAR16                       **ControllerName
> -  )
> -{
> -  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
> -  EFI_HANDLE                  NicHandle;
> -  EFI_STATUS                  Status;
> -
> -  if (ControllerHandle == NULL || ChildHandle != NULL) {
> -    return EFI_UNSUPPORTED;
> -  }
> -
> -  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiArpProtocolGuid);
> -  if (NicHandle == NULL) {
> -    NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiDhcp4ProtocolGuid);
> -
> -    if (NicHandle == NULL) {
> -      NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiIp4ProtocolGuid);
> -
> -      if (NicHandle == NULL) {
> -        NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiUdp4ProtocolGuid);
> -
> -        if (NicHandle == NULL) {
> -          NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiMtftp4ProtocolGuid);
> -
> -          if (NicHandle == NULL) {
> -            return EFI_UNSUPPORTED;
> -          }
> -        }
> -      }
> -    }
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  NicHandle,
> -                  &gEfiPxeBaseCodeProtocolGuid,
> -                  (VOID **) &PxeBc,
> -                  NULL,
> -                  NULL,
> -                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  return LookupUnicodeString2 (
> -           Language,
> -           This->SupportedLanguages,
> -           mPxeBcControllerNameTable,
> -           ControllerName,
> -           (BOOLEAN)(This == &gPxeBcComponentName)
> -           );
> -}
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
> deleted file mode 100644
> index f7b975f2997f..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
> +++ /dev/null
> @@ -1,1999 +0,0 @@
> -/** @file
> -  Support for PxeBc dhcp functions.
> -
> -Copyright (c) 2013, Red Hat, Inc.
> -Copyright (c) 2007 - 2018, 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.
> -
> -**/
> -
> -
> -#include "PxeBcImpl.h"
> -
> -//
> -// This is a map from the interested DHCP4 option tags' index to the tag value.
> -//
> -UINT8 mInterestedDhcp4Tags[PXEBC_DHCP4_TAG_INDEX_MAX] = {
> -  DHCP4_TAG_BOOTFILE_LEN,
> -  DHCP4_TAG_VENDOR,
> -  DHCP4_TAG_OVERLOAD,
> -  DHCP4_TAG_MSG_TYPE,
> -  DHCP4_TAG_SERVER_ID,
> -  DHCP4_TAG_VENDOR_CLASS_ID,
> -  DHCP4_TAG_BOOTFILE
> -};
> -
> -
> -/**
> -  This function initialize the DHCP4 message instance.
> -
> -  This function will pad each item of dhcp4 message packet.
> -
> -  @param  Seed    Pointer to the message instance of the DHCP4 packet.
> -  @param  Udp4    Pointer to the EFI_UDP4_PROTOCOL instance.
> -
> -**/
> -VOID
> -PxeBcInitSeedPacket (
> -  IN EFI_DHCP4_PACKET  *Seed,
> -  IN EFI_UDP4_PROTOCOL *Udp4
> -  )
> -{
> -  EFI_SIMPLE_NETWORK_MODE Mode;
> -  EFI_DHCP4_HEADER        *Header;
> -
> -  Udp4->GetModeData (Udp4, NULL, NULL, NULL, &Mode);
> -
> -  Seed->Size    = sizeof (EFI_DHCP4_PACKET);
> -  Seed->Length  = sizeof (Seed->Dhcp4);
> -
> -  Header        = &Seed->Dhcp4.Header;
> -
> -  ZeroMem (Header, sizeof (EFI_DHCP4_HEADER));
> -  Header->OpCode    = PXEBC_DHCP4_OPCODE_REQUEST;
> -  Header->HwType    = Mode.IfType;
> -  Header->HwAddrLen = (UINT8) Mode.HwAddressSize;
> -  CopyMem (Header->ClientHwAddr, &Mode.CurrentAddress, Header-
> >HwAddrLen);
> -
> -  Seed->Dhcp4.Magik     = PXEBC_DHCP4_MAGIC;
> -  Seed->Dhcp4.Option[0] = DHCP4_TAG_EOP;
> -}
> -
> -
> -/**
> -  Copy the DCHP4 packet from srouce to destination.
> -
> -  @param[in]  Dst          Pointer to the cache buffer for DHCPv4 packet.
> -  @param[in]  Src          Pointer to the DHCPv4 packet to be cached.
> -
> -  @retval     EFI_SUCCESS                Packet is copied.
> -  @retval     EFI_BUFFER_TOO_SMALL       Cache buffer is not big enough to hold
> the packet.
> -
> -**/
> -EFI_STATUS
> -PxeBcCopyEfiDhcp4Packet (
> -  IN EFI_DHCP4_PACKET  *Dst,
> -  IN EFI_DHCP4_PACKET  *Src
> -  )
> -{
> -  if (Dst->Size < Src->Length) {
> -    return EFI_BUFFER_TOO_SMALL;
> -  }
> -
> -  CopyMem (&Dst->Dhcp4, &Src->Dhcp4, Src->Length);
> -  Dst->Length = Src->Length;
> -  return EFI_SUCCESS;
> -}
> -
> -
> -/**
> -  Copy the dhcp4 packet to the PxeBc private data and parse the dhcp4 packet.
> -
> -  @param  Private       Pointer to PxeBc private data.
> -  @param  OfferIndex    Index of cached packets as complements of pxe mode
> data,
> -                        the index is maximum offer number.
> -
> -  @retval     EFI_SUCCESS                Cache and parse the packet successfully.
> -  @retval     EFI_BUFFER_TOO_SMALL       Cache buffer is not big enough to hold
> the packet.
> -
> -**/
> -EFI_STATUS
> -PxeBcCopyProxyOffer (
> -  IN PXEBC_PRIVATE_DATA  *Private,
> -  IN UINT32              OfferIndex
> -  )
> -{
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_DHCP4_PACKET        *Offer;
> -  EFI_STATUS              Status;
> -
> -  ASSERT (OfferIndex < Private->NumOffers);
> -  ASSERT (OfferIndex < PXEBC_MAX_OFFER_NUM);
> -
> -  Mode  = Private->PxeBc.Mode;
> -  Offer = &Private->Dhcp4Offers[OfferIndex].Packet.Offer;
> -
> -  Status = PxeBcCopyEfiDhcp4Packet (&Private->ProxyOffer.Packet.Offer,
> Offer);
> -  if (EFI_ERROR(Status)) {
> -    return Status;
> -  }
> -  CopyMem (&Mode->ProxyOffer, &Offer->Dhcp4, Offer->Length);
> -  Mode->ProxyOfferReceived = TRUE;
> -
> -  PxeBcParseCachedDhcpPacket (&Private->ProxyOffer);
> -  return EFI_SUCCESS;
> -}
> -
> -
> -/**
> -  Parse the cached dhcp packet.
> -
> -  @param  CachedPacket  Pointer to cached dhcp packet.
> -
> -  @retval TRUE          Succeed to parse and validation.
> -  @retval FALSE         Fail to parse or validation.
> -
> -**/
> -BOOLEAN
> -PxeBcParseCachedDhcpPacket (
> -  IN PXEBC_CACHED_DHCP4_PACKET  *CachedPacket
> -  )
> -{
> -  EFI_DHCP4_PACKET        *Offer;
> -  EFI_DHCP4_PACKET_OPTION **Options;
> -  EFI_DHCP4_PACKET_OPTION *Option;
> -  UINT8                   OfferType;
> -  UINTN                   Index;
> -  UINT8                   *Ptr8;
> -
> -  CachedPacket->IsPxeOffer = FALSE;
> -  ZeroMem (CachedPacket->Dhcp4Option, sizeof (CachedPacket-
> >Dhcp4Option));
> -  ZeroMem (&CachedPacket->PxeVendorOption, sizeof (CachedPacket-
> >PxeVendorOption));
> -
> -  Offer   = &CachedPacket->Packet.Offer;
> -  Options = CachedPacket->Dhcp4Option;
> -
> -  //
> -  // Parse interested dhcp options and store their pointers in CachedPacket-
> >Dhcp4Option.
> -  // First, try to parse DHCPv4 options from the DHCP optional parameters field.
> -  //
> -  for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
> -    Options[Index] = PxeBcParseExtendOptions (
> -                       Offer->Dhcp4.Option,
> -                       GET_OPTION_BUFFER_LEN (Offer),
> -                       mInterestedDhcp4Tags[Index]
> -                       );
> -  }
> -  //
> -  // Second, Check if bootfilename and serverhostname is overloaded to carry
> DHCP options refers to rfc-2132.
> -  // If yes, try to parse options from the BootFileName field, then ServerName
> field.
> -  //
> -  Option = Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD];
> -  if (Option != NULL) {
> -    if ((Option->Data[0] & PXEBC_DHCP4_OVERLOAD_FILE) != 0) {
> -      for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
> -        if (Options[Index] == NULL) {
> -          Options[Index] = PxeBcParseExtendOptions (
> -                             (UINT8 *) Offer->Dhcp4.Header.BootFileName,
> -                             sizeof (Offer->Dhcp4.Header.BootFileName),
> -                             mInterestedDhcp4Tags[Index]
> -                             );
> -        }
> -      }
> -    }
> -    if ((Option->Data[0] & PXEBC_DHCP4_OVERLOAD_SERVER_NAME) != 0) {
> -      for (Index = 0; Index < PXEBC_DHCP4_TAG_INDEX_MAX; Index++) {
> -        if (Options[Index] == NULL) {
> -          Options[Index] = PxeBcParseExtendOptions (
> -                             (UINT8 *) Offer->Dhcp4.Header.ServerName,
> -                             sizeof (Offer->Dhcp4.Header.ServerName),
> -                             mInterestedDhcp4Tags[Index]
> -                             );
> -        }
> -      }
> -    }
> -  }
> -
> -  //
> -  // Check whether is an offer with PXEClient or not.
> -  //
> -  Option = Options[PXEBC_DHCP4_TAG_INDEX_CLASS_ID];
> -  if ((Option != NULL) && (Option->Length >= 9) &&
> -    (CompareMem (Option->Data, DEFAULT_CLASS_ID_DATA, 9) == 0)) {
> -
> -    CachedPacket->IsPxeOffer = TRUE;
> -  }
> -
> -  //
> -  // Parse pxe vendor options and store their content/pointers in CachedPacket-
> >PxeVendorOption.
> -  //
> -  Option = Options[PXEBC_DHCP4_TAG_INDEX_VENDOR];
> -  if (CachedPacket->IsPxeOffer && (Option != NULL)) {
> -
> -    if (!PxeBcParseVendorOptions (Option, &CachedPacket->PxeVendorOption)) {
> -      return FALSE;
> -    }
> -  }
> -
> -
> -  //
> -  // Parse PXE boot file name:
> -  // According to PXE spec, boot file name should be read from DHCP option 67
> (bootfile name) if present.
> -  // Otherwise, read from boot file field in DHCP header.
> -  //
> -  if (Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {
> -    //
> -    // RFC 2132, Section 9.5 does not strictly state Bootfile name (option 67) is
> null
> -    // terminated string. So force to append null terminated character at the end
> of string.
> -    //
> -    Ptr8 =  (UINT8*)&Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];
> -    Ptr8 += Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Length;
> -    if (*(Ptr8 - 1) != '\0') {
> -      *Ptr8 = '\0';
> -    }
> -  } else if (Offer->Dhcp4.Header.BootFileName[0] != 0) {
> -    //
> -    // If the bootfile is not present and bootfilename is present in dhcp packet,
> just parse it.
> -    // And do not count dhcp option header, or else will destroy the
> serverhostname.
> -    //
> -    // Make sure "BootFileName" is not overloaded.
> -    //
> -    if (Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD] == NULL ||
> -        (Options[PXEBC_DHCP4_TAG_INDEX_OVERLOAD]->Data[0] &
> PXEBC_DHCP4_OVERLOAD_FILE) == 0) {
> -      Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] =
> (EFI_DHCP4_PACKET_OPTION *) (&Offer->Dhcp4.Header.BootFileName[0] -
> -                                            OFFSET_OF (EFI_DHCP4_PACKET_OPTION, Data[0]));
> -    }
> -  }
> -
> -  //
> -  // Determine offer type of the dhcp packet.
> -  //
> -  Option = Options[PXEBC_DHCP4_TAG_INDEX_MSG_TYPE];
> -  if ((Option == NULL) || (Option->Data[0] == 0)) {
> -    //
> -    // It's a bootp offer
> -    //
> -    Option = CachedPacket-
> >Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE];
> -    if (Option == NULL) {
> -      //
> -      // bootp offer without bootfilename, discard it.
> -      //
> -      return FALSE;
> -    }
> -
> -    OfferType = DHCP4_PACKET_TYPE_BOOTP;
> -
> -  } else {
> -
> -    if (IS_VALID_DISCOVER_VENDOR_OPTION (CachedPacket-
> >PxeVendorOption.BitMap)) {
> -      //
> -      // It's a pxe10 offer with PXEClient and discover vendor option.
> -      //
> -      OfferType = DHCP4_PACKET_TYPE_PXE10;
> -    } else if (IS_VALID_MTFTP_VENDOR_OPTION (CachedPacket-
> >PxeVendorOption.BitMap)) {
> -      //
> -      // It's a wfm11a offer with PXEClient and mtftp vendor option, and
> -      // return false since mtftp not supported currently.
> -      //
> -      return FALSE;
> -    } else {
> -      //
> -      // If the binl offer with only PXEClient.
> -      //
> -      OfferType = (UINT8) ((CachedPacket->IsPxeOffer) ?
> DHCP4_PACKET_TYPE_BINL : DHCP4_PACKET_TYPE_DHCP_ONLY);
> -    }
> -  }
> -
> -  CachedPacket->OfferType = OfferType;
> -
> -  return TRUE;
> -}
> -
> -
> -/**
> -  Offer dhcp service with a BINL dhcp offer.
> -
> -  @param  Private   Pointer to PxeBc private data.
> -  @param  Index     Index of cached packets as complements of pxe mode data,
> -                    the index is maximum offer number.
> -
> -  @retval TRUE      Offer the service successfully under priority BINL.
> -  @retval FALSE     Boot Service failed, parse cached dhcp packet failed or this
> -                    BINL ack cannot find options set or bootfile name specified.
> -
> -**/
> -BOOLEAN
> -PxeBcTryBinl (
> -  IN PXEBC_PRIVATE_DATA  *Private,
> -  IN UINT32              Index
> -  )
> -{
> -  EFI_DHCP4_PACKET          *Offer;
> -  EFI_IP_ADDRESS            ServerIp;
> -  EFI_STATUS                Status;
> -  PXEBC_CACHED_DHCP4_PACKET *CachedPacket;
> -  EFI_DHCP4_PACKET          *Reply;
> -
> -  ASSERT (Index < PXEBC_MAX_OFFER_NUM);
> -  ASSERT (Private->Dhcp4Offers[Index].OfferType ==
> DHCP4_PACKET_TYPE_BINL);
> -
> -  Offer = &Private->Dhcp4Offers[Index].Packet.Offer;
> -
> -  //
> -  // Use siaddr(next server) in DHCPOFFER packet header, if zero, use option
> 54(server identifier)
> -  // in DHCPOFFER packet.
> -  // (It does not comply with PXE Spec, Ver2.1)
> -  //
> -  if (EFI_IP4_EQUAL (&Offer->Dhcp4.Header.ServerAddr.Addr, &mZeroIp4Addr))
> {
> -    CopyMem (
> -      &ServerIp.Addr[0],
> -      Private-
> >Dhcp4Offers[Index].Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_SERVER_ID]-
> >Data,
> -      sizeof (EFI_IPv4_ADDRESS)
> -      );
> -  } else {
> -    CopyMem (
> -      &ServerIp.Addr[0],
> -      &Offer->Dhcp4.Header.ServerAddr,
> -      sizeof (EFI_IPv4_ADDRESS)
> -      );
> -  }
> -  if (ServerIp.Addr[0] == 0) {
> -    return FALSE;
> -  }
> -
> -  CachedPacket = &Private->ProxyOffer;
> -  Reply        = &CachedPacket->Packet.Offer;
> -
> -  Status = PxeBcDiscvBootService (
> -            Private,
> -            0,
> -            NULL,
> -            FALSE,
> -            &ServerIp,
> -            0,
> -            NULL,
> -            FALSE,
> -            Reply
> -            );
> -  if (EFI_ERROR (Status)) {
> -    return FALSE;
> -  }
> -
> -  if (!PxeBcParseCachedDhcpPacket (CachedPacket)) {
> -    return FALSE;
> -  }
> -
> -  if ((CachedPacket->OfferType != DHCP4_PACKET_TYPE_PXE10) &&
> -      (CachedPacket->Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] ==
> NULL)) {
> -    //
> -    // This BINL ack doesn't have discovery options set or bootfile name
> -    // specified.
> -    //
> -    return FALSE;
> -  }
> -
> -  Private->PxeBc.Mode->ProxyOfferReceived = TRUE;
> -  CopyMem (&Private->PxeBc.Mode->ProxyOffer, &Reply->Dhcp4, Reply-
> >Length);
> -
> -  return TRUE;
> -}
> -
> -
> -/**
> -  Offer dhcp service for each proxy with a BINL dhcp offer.
> -
> -  @param  Private     Pointer to PxeBc private data
> -  @param  OfferIndex  Pointer to the index of cached packets as complements
> of
> -                      pxe mode data, the index is maximum offer number.
> -
> -  @return If there is no service needed offer return FALSE, otherwise TRUE.
> -
> -**/
> -BOOLEAN
> -PxeBcTryBinlProxy (
> -  IN  PXEBC_PRIVATE_DATA  *Private,
> -  OUT UINT32              *OfferIndex
> -  )
> -{
> -  UINT32  Index;
> -
> -  for (Index = 0; Index < Private->ProxyIndex[DHCP4_PACKET_TYPE_BINL];
> Index++) {
> -
> -    *OfferIndex = Private->BinlIndex[Index];
> -    //
> -    // Try this BINL proxy offer
> -    //
> -    if (PxeBcTryBinl (Private, *OfferIndex)) {
> -      return TRUE;
> -    }
> -  }
> -
> -  return FALSE;
> -}
> -
> -
> -/**
> -  This function is to check the selected proxy offer (include BINL dhcp offer and
> -  DHCP_ONLY offer ) and set the flag and copy the DHCP packets to the Pxe
> base code
> -  mode structure.
> -
> -  @param  Private          Pointer to PxeBc private data.
> -
> -  @retval EFI_SUCCESS                Operational successful.
> -  @retval EFI_NO_RESPONSE            Offer dhcp service failed.
> -  @retval EFI_BUFFER_TOO_SMALL       Failed to copy the packet to Pxe base
> code mode.
> -
> -**/
> -EFI_STATUS
> -PxeBcCheckSelectedOffer (
> -  IN PXEBC_PRIVATE_DATA  *Private
> -  )
> -{
> -  PXEBC_CACHED_DHCP4_PACKET *SelectedOffer;
> -  EFI_DHCP4_PACKET_OPTION   **Options;
> -  UINT32                    Index;
> -  EFI_DHCP4_PACKET          *Offer;
> -  UINT32                    ProxyOfferIndex;
> -  EFI_STATUS                Status;
> -  EFI_PXE_BASE_CODE_MODE    *Mode;
> -  EFI_DHCP4_PACKET          *Ack;
> -
> -  ASSERT (Private->SelectedOffer != 0);
> -
> -  Status        = EFI_SUCCESS;
> -  SelectedOffer = &Private->Dhcp4Offers[Private->SelectedOffer - 1];
> -  Options       = SelectedOffer->Dhcp4Option;
> -
> -  if (SelectedOffer->OfferType == DHCP4_PACKET_TYPE_BINL) {
> -    //
> -    // The addresses are acquired from a BINL dhcp offer, try BINL to get
> -    // the bootfile name
> -    //
> -    if (!PxeBcTryBinl (Private, Private->SelectedOffer - 1)) {
> -      Status = EFI_NO_RESPONSE;
> -    }
> -  } else if (SelectedOffer->OfferType == DHCP4_PACKET_TYPE_DHCP_ONLY) {
> -    //
> -    // The selected offer to finish the D.O.R.A. is a DHCP only offer, we need
> -    // try proxy offers if there are some, othewise the bootfile name must be
> -    // set in this DHCP only offer.
> -    //
> -    if (Private->GotProxyOffer) {
> -      //
> -      // Get rid of the compiler warning.
> -      //
> -      ProxyOfferIndex = 0;
> -      if (Private->SortOffers) {
> -        //
> -        // The offers are sorted before selecting, the proxy offer type must be
> -        // already determined.
> -        //
> -        ASSERT (Private->ProxyIndex[Private->ProxyOfferType] > 0);
> -
> -        if (Private->ProxyOfferType == DHCP4_PACKET_TYPE_BINL) {
> -          //
> -          // We buffer all received BINL proxy offers, try them all one by one
> -          //
> -          if (!PxeBcTryBinlProxy (Private, &ProxyOfferIndex)) {
> -            Status = EFI_NO_RESPONSE;
> -          }
> -        } else {
> -          //
> -          // For other types, only one proxy offer is buffered.
> -          //
> -          ProxyOfferIndex = Private->ProxyIndex[Private->ProxyOfferType] - 1;
> -        }
> -      } else {
> -        //
> -        // The proxy offer type is not determined, choose proxy offer in the
> -        // received order.
> -        //
> -        Status = EFI_NO_RESPONSE;
> -
> -        ASSERT (Private->NumOffers < PXEBC_MAX_OFFER_NUM);
> -        for (Index = 0; Index < Private->NumOffers; Index++) {
> -
> -          Offer = &Private->Dhcp4Offers[Index].Packet.Offer;
> -          if (!IS_PROXY_DHCP_OFFER (Offer)) {
> -            //
> -            // Skip non proxy dhcp offers.
> -            //
> -            continue;
> -          }
> -
> -          if (Private->Dhcp4Offers[Index].OfferType == DHCP4_PACKET_TYPE_BINL)
> {
> -            //
> -            // Try BINL
> -            //
> -            if (!PxeBcTryBinl (Private, Index)) {
> -              //
> -              // Failed, skip to the next offer
> -              //
> -              continue;
> -            }
> -          }
> -
> -          Private->ProxyOfferType = Private->Dhcp4Offers[Index].OfferType;
> -          ProxyOfferIndex         = Index;
> -          Status                  = EFI_SUCCESS;
> -          break;
> -        }
> -      }
> -
> -      if (!EFI_ERROR (Status) && (Private->ProxyOfferType !=
> DHCP4_PACKET_TYPE_BINL)) {
> -        //
> -        // Copy the proxy offer to Mode and set the flag
> -        //
> -        Status = PxeBcCopyProxyOffer (Private, ProxyOfferIndex);
> -      }
> -    } else {
> -      //
> -      // No proxy offer is received, the bootfile name MUST be set.
> -      //
> -      ASSERT (Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL);
> -    }
> -  }
> -
> -  if (!EFI_ERROR (Status)) {
> -    //
> -    // Everything is OK, set the flag and copy the DHCP packets.
> -    //
> -    Mode  = Private->PxeBc.Mode;
> -    Offer = &SelectedOffer->Packet.Offer;
> -
> -    //
> -    // The discover packet is already copied, just set flag here.
> -    //
> -    Mode->DhcpDiscoverValid = TRUE;
> -
> -    Ack                     = &Private->Dhcp4Ack.Packet.Ack;
> -    if (SelectedOffer->OfferType == DHCP4_PACKET_TYPE_BOOTP) {
> -      //
> -      // Other type of ACK is already cached. Bootp is special that we should
> -      // use the bootp reply as the ACK and put it into the DHCP_ONLY buffer.
> -      //
> -      Status = PxeBcCopyEfiDhcp4Packet (&Private->Dhcp4Ack.Packet.Ack, Offer);
> -    }
> -
> -    PxeBcParseCachedDhcpPacket (&Private->Dhcp4Ack);
> -
> -    Mode->DhcpAckReceived = TRUE;
> -
> -    //
> -    // Copy the dhcp ack.
> -    //
> -    CopyMem (&Mode->DhcpAck, &Ack->Dhcp4, Ack->Length);
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Cache the Dhcp4 packet offer, Parse and validate each option of the packet.
> -
> -  @param  Private    Pointer to PxeBc private data.
> -  @param  RcvdOffer  Pointer to the received Dhcp proxy offer packet.
> -
> -  @retval     EFI_SUCCESS      Cache and parse the packet successfully.
> -  @retval     Others           Operation failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcCacheDhcpOffer (
> -  IN PXEBC_PRIVATE_DATA  *Private,
> -  IN EFI_DHCP4_PACKET    *RcvdOffer
> -  )
> -{
> -  PXEBC_CACHED_DHCP4_PACKET *CachedOffer;
> -  EFI_DHCP4_PACKET          *Offer;
> -  UINT8                     OfferType;
> -  EFI_STATUS                Status;
> -
> -  CachedOffer = &Private->Dhcp4Offers[Private->NumOffers];
> -  Offer       = &CachedOffer->Packet.Offer;
> -
> -  //
> -  // Cache the orignal dhcp packet
> -  //
> -  Status = PxeBcCopyEfiDhcp4Packet (Offer, RcvdOffer);
> -  if (EFI_ERROR(Status)) {
> -    return Status;
> -  }
> -
> -  //
> -  // Parse and validate the options (including dhcp option and vendor option)
> -  //
> -  if (!PxeBcParseCachedDhcpPacket (CachedOffer)) {
> -    return EFI_ABORTED;
> -  }
> -
> -  OfferType = CachedOffer->OfferType;
> -  if (OfferType >= DHCP4_PACKET_TYPE_MAX) {
> -    return EFI_ABORTED;
> -  }
> -
> -  if (OfferType == DHCP4_PACKET_TYPE_BOOTP) {
> -
> -    if (Private->BootpIndex != 0) {
> -      //
> -      // Only cache the first bootp offer, discard others.
> -      //
> -      return EFI_ABORTED;
> -    } else {
> -      //
> -      // Take as a dhcp only offer, but record index specifically.
> -      //
> -      Private->BootpIndex = Private->NumOffers + 1;
> -    }
> -  } else {
> -
> -    if (IS_PROXY_DHCP_OFFER (Offer)) {
> -      //
> -      // It's a proxy dhcp offer with no your address, including pxe10, wfm11a or
> binl offer.
> -      //
> -      Private->GotProxyOffer = TRUE;
> -
> -      if (OfferType == DHCP4_PACKET_TYPE_BINL) {
> -        //
> -        // Cache all binl offers.
> -        //
> -        Private->BinlIndex[Private->ProxyIndex[DHCP4_PACKET_TYPE_BINL]] =
> Private->NumOffers;
> -        Private->ProxyIndex[DHCP4_PACKET_TYPE_BINL]++;
> -      } else if (Private->ProxyIndex[OfferType] != 0) {
> -        //
> -        // Only cache the first pxe10/wfm11a offers each, discard the others.
> -        //
> -        return EFI_ABORTED;
> -      } else {
> -        //
> -        // Record index of the proxy dhcp offer with type other than binl.
> -        //
> -        Private->ProxyIndex[OfferType] = Private->NumOffers + 1;
> -      }
> -    } else {
> -      //
> -      // It's a dhcp offer with your address.
> -      //
> -      ASSERT (Private->ServerCount[OfferType] < PXEBC_MAX_OFFER_NUM);
> -      Private->OfferIndex[OfferType][Private->ServerCount[OfferType]] =
> Private->NumOffers;
> -      Private->ServerCount[OfferType]++;
> -    }
> -  }
> -
> -  //
> -  // Count the accepted offers.
> -  //
> -  Private->NumOffers++;
> -
> -  return EFI_SUCCESS;
> -}
> -
> -/**
> -  Switch the Ip4 policy to static.
> -
> -  @param[in]  Private             The pointer to PXEBC_PRIVATE_DATA.
> -
> -  @retval     EFI_SUCCESS         The policy is already configured to static.
> -  @retval     Others              Other error as indicated..
> -
> -**/
> -EFI_STATUS
> -PxeBcSetIp4Policy (
> -  IN PXEBC_PRIVATE_DATA            *Private
> -  )
> -{
> -  EFI_STATUS                   Status;
> -  EFI_IP4_CONFIG2_PROTOCOL     *Ip4Config2;
> -  EFI_IP4_CONFIG2_POLICY       Policy;
> -  UINTN                        DataSize;
> -
> -  Ip4Config2 = Private->Ip4Config2;
> -  DataSize = sizeof (EFI_IP4_CONFIG2_POLICY);
> -  Status = Ip4Config2->GetData (
> -                       Ip4Config2,
> -                       Ip4Config2DataTypePolicy,
> -                       &DataSize,
> -                       &Policy
> -                       );
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  if (Policy != Ip4Config2PolicyStatic) {
> -    Policy = Ip4Config2PolicyStatic;
> -    Status= Ip4Config2->SetData (
> -                          Ip4Config2,
> -                          Ip4Config2DataTypePolicy,
> -                          sizeof (EFI_IP4_CONFIG2_POLICY),
> -                          &Policy
> -                          );
> -    if (EFI_ERROR (Status)) {
> -      return Status;
> -    }
> -  }
> -
> -  return  EFI_SUCCESS;
> -}
> -
> -
> -/**
> -  Select the specified proxy offer, such as BINL, DHCP_ONLY and so on.
> -  If the proxy does not exist, try offers with bootfile.
> -
> -  @param  Private   Pointer to PxeBc private data.
> -
> -**/
> -VOID
> -PxeBcSelectOffer (
> -  IN PXEBC_PRIVATE_DATA  *Private
> -  )
> -{
> -  UINT32            Index;
> -  UINT32            OfferIndex;
> -  EFI_DHCP4_PACKET  *Offer;
> -
> -  Private->SelectedOffer = 0;
> -
> -  if (Private->SortOffers) {
> -    //
> -    // Select offer according to the priority
> -    //
> -    if (Private->ServerCount[DHCP4_PACKET_TYPE_PXE10] > 0) {
> -      //
> -      // DHCP with PXE10
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_PXE10][0] + 1;
> -
> -    } else if (Private->ServerCount[DHCP4_PACKET_TYPE_WFM11A] > 0) {
> -      //
> -      // DHCP with WfM
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_WFM11A][0] + 1;
> -
> -    } else if ((Private->ProxyIndex[DHCP4_PACKET_TYPE_PXE10] > 0) &&
> -             (Private->ServerCount[DHCP4_PACKET_TYPE_DHCP_ONLY] > 0)
> -            ) {
> -      //
> -      // DHCP only and proxy DHCP with PXE10
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_DHCP_ONLY][0] + 1;
> -      Private->ProxyOfferType     = DHCP4_PACKET_TYPE_PXE10;
> -
> -    } else if ((Private->ProxyIndex[DHCP4_PACKET_TYPE_WFM11A] > 0) &&
> -             (Private->ServerCount[DHCP4_PACKET_TYPE_DHCP_ONLY] > 0)
> -            ) {
> -      //
> -      // DHCP only and proxy DHCP with WfM
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_DHCP_ONLY][0] + 1;
> -      Private->ProxyOfferType     = DHCP4_PACKET_TYPE_WFM11A;
> -
> -    } else if (Private->ServerCount[DHCP4_PACKET_TYPE_BINL] > 0) {
> -      //
> -      // DHCP with BINL
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_BINL][0] + 1;
> -
> -    } else if ((Private->ProxyIndex[DHCP4_PACKET_TYPE_BINL] > 0) &&
> -             (Private->ServerCount[DHCP4_PACKET_TYPE_DHCP_ONLY] > 0)
> -            ) {
> -      //
> -      // DHCP only and proxy DHCP with BINL
> -      //
> -      Private->SelectedOffer = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_DHCP_ONLY][0] + 1;
> -      Private->ProxyOfferType     = DHCP4_PACKET_TYPE_BINL;
> -
> -    } else {
> -      //
> -      // Try offers with bootfile
> -      //
> -      for (Index = 0; Index < Private-
> >ServerCount[DHCP4_PACKET_TYPE_DHCP_ONLY]; Index++) {
> -        //
> -        // Select the first DHCP only offer with bootfile
> -        //
> -        OfferIndex = Private-
> >OfferIndex[DHCP4_PACKET_TYPE_DHCP_ONLY][Index];
> -        if (Private-
> >Dhcp4Offers[OfferIndex].Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]
>  != NULL) {
> -          Private->SelectedOffer = OfferIndex + 1;
> -          break;
> -        }
> -      }
> -
> -      if (Private->SelectedOffer == 0) {
> -        //
> -        // Select the Bootp reply with bootfile if any
> -        //
> -        Private->SelectedOffer = Private->BootpIndex;
> -      }
> -    }
> -  } else {
> -    //
> -    // Try the offers in the received order.
> -    //
> -    for (Index = 0; Index < Private->NumOffers; Index++) {
> -
> -      Offer = &Private->Dhcp4Offers[Index].Packet.Offer;
> -
> -      if (IS_PROXY_DHCP_OFFER (Offer)) {
> -        //
> -        // Skip proxy offers
> -        //
> -        continue;
> -      }
> -
> -      if ((Private->Dhcp4Offers[Index].OfferType ==
> DHCP4_PACKET_TYPE_DHCP_ONLY) &&
> -          ((!Private->GotProxyOffer) && (Private-
> >Dhcp4Offers[Index].Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] ==
> NULL))) {
> -        //
> -        // DHCP only offer but no proxy offer received and no bootfile option in
> this offer
> -        //
> -        continue;
> -      }
> -
> -      Private->SelectedOffer = Index + 1;
> -      break;
> -    }
> -  }
> -}
> -
> -
> -/**
> -  Callback routine.
> -
> -  EFI_DHCP4_CALLBACK is provided by the consumer of the EFI DHCPv4
> Protocol driver
> -  to intercept events that occurred in the configuration process. This structure
> -  provides advanced control of each state transition of the DHCP process. The
> -  returned status code determines the behavior of the EFI DHCPv4 Protocol
> driver.
> -  There are three possible returned values, which are described in the following
> -  table.
> -
> -  @param  This                  Pointer to the EFI DHCPv4 Protocol instance that is
> used to
> -                                configure this callback function.
> -  @param  Context               Pointer to the context that is initialized by
> -                                EFI_DHCP4_PROTOCOL.Configure().
> -  @param  CurrentState          The current operational state of the EFI DHCPv4
> Protocol
> -                                driver.
> -  @param  Dhcp4Event            The event that occurs in the current state, which
> usually means a
> -                                state transition.
> -  @param  Packet                The DHCP packet that is going to be sent or already
> received.
> -  @param  NewPacket             The packet that is used to replace the above
> Packet.
> -
> -  @retval EFI_SUCCESS           Tells the EFI DHCPv4 Protocol driver to continue
> the DHCP process.
> -  @retval EFI_NOT_READY         Only used in the Dhcp4Selecting state. The EFI
> DHCPv4 Protocol
> -                                driver will continue to wait for more DHCPOFFER packets until
> the retry
> -                                timeout expires.
> -  @retval EFI_ABORTED           Tells the EFI DHCPv4 Protocol driver to abort the
> current process and
> -                                return to the Dhcp4Init or Dhcp4InitReboot state.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDhcpCallBack (
> -  IN EFI_DHCP4_PROTOCOL                * This,
> -  IN VOID                              *Context,
> -  IN EFI_DHCP4_STATE                   CurrentState,
> -  IN EFI_DHCP4_EVENT                   Dhcp4Event,
> -  IN EFI_DHCP4_PACKET                  * Packet OPTIONAL,
> -  OUT EFI_DHCP4_PACKET                 **NewPacket OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA                  *Private;
> -  EFI_PXE_BASE_CODE_MODE              *Mode;
> -  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL *Callback;
> -  EFI_DHCP4_PACKET_OPTION             *MaxMsgSize;
> -  UINT16                              Value;
> -  EFI_STATUS                          Status;
> -  BOOLEAN                             Received;
> -  EFI_DHCP4_HEADER                    *DhcpHeader;
> -
> -  if ((Dhcp4Event != Dhcp4RcvdOffer) &&
> -      (Dhcp4Event != Dhcp4SelectOffer) &&
> -      (Dhcp4Event != Dhcp4SendDiscover) &&
> -      (Dhcp4Event != Dhcp4RcvdAck) &&
> -      (Dhcp4Event != Dhcp4SendRequest)) {
> -    return EFI_SUCCESS;
> -  }
> -
> -  Private   = (PXEBC_PRIVATE_DATA *) Context;
> -  Mode      = Private->PxeBc.Mode;
> -  Callback  = Private->PxeBcCallback;
> -
> -  //
> -  // Override the Maximum DHCP Message Size.
> -  //
> -  MaxMsgSize = PxeBcParseExtendOptions (
> -                Packet->Dhcp4.Option,
> -                GET_OPTION_BUFFER_LEN (Packet),
> -                DHCP4_TAG_MAXMSG
> -                );
> -  if (MaxMsgSize != NULL) {
> -    Value = HTONS (PXEBC_DHCP4_MAX_PACKET_SIZE);
> -    CopyMem (MaxMsgSize->Data, &Value, sizeof (Value));
> -  }
> -
> -  if ((Dhcp4Event != Dhcp4SelectOffer) && (Callback != NULL)) {
> -    Received = (BOOLEAN) ((Dhcp4Event == Dhcp4RcvdOffer) || (Dhcp4Event ==
> Dhcp4RcvdAck));
> -    Status = Callback->Callback (
> -                        Callback,
> -                        Private->Function,
> -                        Received,
> -                        Packet->Length,
> -                        (EFI_PXE_BASE_CODE_PACKET *) &Packet->Dhcp4
> -                        );
> -    if (Status != EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE) {
> -      return EFI_ABORTED;
> -    }
> -  }
> -
> -  Status = EFI_SUCCESS;
> -
> -  switch (Dhcp4Event) {
> -
> -  case Dhcp4SendDiscover:
> -  case Dhcp4SendRequest:
> -    if (Packet->Length > PXEBC_DHCP4_MAX_PACKET_SIZE) {
> -      //
> -      // If the to be sent packet exceeds the maximum length, abort the DHCP
> process.
> -      //
> -      Status = EFI_ABORTED;
> -      break;
> -    }
> -
> -    if (Mode->SendGUID) {
> -      //
> -      // send the system GUID instead of the MAC address as the hardware
> address
> -      // in the DHCP packet header.
> -      //
> -      DhcpHeader = &Packet->Dhcp4.Header;
> -
> -      if (EFI_ERROR (NetLibGetSystemGuid ((EFI_GUID *) DhcpHeader-
> >ClientHwAddr))) {
> -        //
> -        // GUID not yet set - send all 0xff's to show programable (via SetVariable)
> -        // SetMem(DHCPV4_OPTIONS_BUFFER.DhcpPlatformId.Guid,
> sizeof(EFI_GUID), 0xff);
> -        // GUID not yet set - send all 0's to show not programable
> -        //
> -        DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios
> table!\n"));
> -        ZeroMem (DhcpHeader->ClientHwAddr, sizeof (EFI_GUID));
> -      }
> -
> -      DhcpHeader->HwAddrLen = (UINT8) sizeof (EFI_GUID);
> -    }
> -
> -    if (Dhcp4Event == Dhcp4SendDiscover) {
> -      //
> -      // Cache the dhcp discover packet, of which some information will be used
> later.
> -      //
> -      CopyMem (Mode->DhcpDiscover.Raw, &Packet->Dhcp4, Packet->Length);
> -    }
> -
> -    break;
> -
> -  case Dhcp4RcvdOffer:
> -    Status = EFI_NOT_READY;
> -    if (Packet->Length > PXEBC_DHCP4_MAX_PACKET_SIZE) {
> -      //
> -      // Ignore the incoming Offers which exceed the maximum length.
> -      //
> -      break;
> -    }
> -
> -    if (Private->NumOffers < PXEBC_MAX_OFFER_NUM) {
> -      //
> -      // Cache the dhcp offers in Private->Dhcp4Offers[]
> -      // If error happens, just ignore this packet and continue to wait more offer.
> -      //
> -      PxeBcCacheDhcpOffer (Private, Packet);
> -    }
> -
> -    break;
> -
> -  case Dhcp4SelectOffer:
> -    //
> -    // Select an offer, if succeeded, Private->SelectedOffer points to
> -    // the index of the selected one.
> -    //
> -    PxeBcSelectOffer (Private);
> -
> -    if (Private->SelectedOffer == 0) {
> -      Status = EFI_ABORTED;
> -    } else {
> -      *NewPacket = &Private->Dhcp4Offers[Private->SelectedOffer -
> 1].Packet.Offer;
> -    }
> -
> -    break;
> -
> -  case Dhcp4RcvdAck:
> -    //
> -    // Cache Ack
> -    //
> -    ASSERT (Private->SelectedOffer != 0);
> -
> -    Status = PxeBcCopyEfiDhcp4Packet (&Private->Dhcp4Ack.Packet.Ack, Packet);
> -    if (EFI_ERROR (Status)) {
> -      return EFI_ABORTED;
> -    }
> -    break;
> -
> -  default:
> -    break;
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Initialize the DHCP options and build the option list.
> -
> -  @param  Private          Pointer to PxeBc private data.
> -  @param  OptList          Pointer to a DHCP option list.
> -
> -  @param  IsDhcpDiscover   Discover dhcp option or not.
> -
> -  @return The index item number of the option list.
> -
> -**/
> -UINT32
> -PxeBcBuildDhcpOptions (
> -  IN PXEBC_PRIVATE_DATA            *Private,
> -  IN EFI_DHCP4_PACKET_OPTION       **OptList,
> -  IN BOOLEAN                       IsDhcpDiscover
> -  )
> -{
> -  UINT32                    Index;
> -  PXEBC_DHCP4_OPTION_ENTRY  OptEnt;
> -  UINT16                    Value;
> -
> -  Index       = 0;
> -  OptList[0]  = (EFI_DHCP4_PACKET_OPTION *) Private->OptionBuffer;
> -
> -  if (!IsDhcpDiscover) {
> -    //
> -    // Append message type.
> -    //
> -    OptList[Index]->OpCode  = DHCP4_TAG_MSG_TYPE;
> -    OptList[Index]->Length  = 1;
> -    OptEnt.Mesg             = (PXEBC_DHCP4_OPTION_MESG *) OptList[Index]-
> >Data;
> -    OptEnt.Mesg->Type       = PXEBC_DHCP4_MSG_TYPE_REQUEST;
> -    Index++;
> -    OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -
> -    //
> -    // Append max message size.
> -    //
> -    OptList[Index]->OpCode  = DHCP4_TAG_MAXMSG;
> -    OptList[Index]->Length  = (UINT8) sizeof
> (PXEBC_DHCP4_OPTION_MAX_MESG_SIZE);
> -    OptEnt.MaxMesgSize      = (PXEBC_DHCP4_OPTION_MAX_MESG_SIZE *)
> OptList[Index]->Data;
> -    Value                   = NTOHS (PXEBC_DHCP4_MAX_PACKET_SIZE);
> -    CopyMem (&OptEnt.MaxMesgSize->Size, &Value, sizeof (UINT16));
> -    Index++;
> -    OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -  }
> -  //
> -  // Parameter request list option.
> -  //
> -  OptList[Index]->OpCode    = DHCP4_TAG_PARA_LIST;
> -  OptList[Index]->Length    = 35;
> -  OptEnt.Para               = (PXEBC_DHCP4_OPTION_PARA *) OptList[Index]->Data;
> -  OptEnt.Para->ParaList[0]  = DHCP4_TAG_NETMASK;
> -  OptEnt.Para->ParaList[1]  = DHCP4_TAG_TIME_OFFSET;
> -  OptEnt.Para->ParaList[2]  = DHCP4_TAG_ROUTER;
> -  OptEnt.Para->ParaList[3]  = DHCP4_TAG_TIME_SERVER;
> -  OptEnt.Para->ParaList[4]  = DHCP4_TAG_NAME_SERVER;
> -  OptEnt.Para->ParaList[5]  = DHCP4_TAG_DNS_SERVER;
> -  OptEnt.Para->ParaList[6]  = DHCP4_TAG_HOSTNAME;
> -  OptEnt.Para->ParaList[7]  = DHCP4_TAG_BOOTFILE_LEN;
> -  OptEnt.Para->ParaList[8]  = DHCP4_TAG_DOMAINNAME;
> -  OptEnt.Para->ParaList[9]  = DHCP4_TAG_ROOTPATH;
> -  OptEnt.Para->ParaList[10] = DHCP4_TAG_EXTEND_PATH;
> -  OptEnt.Para->ParaList[11] = DHCP4_TAG_EMTU;
> -  OptEnt.Para->ParaList[12] = DHCP4_TAG_TTL;
> -  OptEnt.Para->ParaList[13] = DHCP4_TAG_BROADCAST;
> -  OptEnt.Para->ParaList[14] = DHCP4_TAG_NIS_DOMAIN;
> -  OptEnt.Para->ParaList[15] = DHCP4_TAG_NIS_SERVER;
> -  OptEnt.Para->ParaList[16] = DHCP4_TAG_NTP_SERVER;
> -  OptEnt.Para->ParaList[17] = DHCP4_TAG_VENDOR;
> -  OptEnt.Para->ParaList[18] = DHCP4_TAG_REQUEST_IP;
> -  OptEnt.Para->ParaList[19] = DHCP4_TAG_LEASE;
> -  OptEnt.Para->ParaList[20] = DHCP4_TAG_SERVER_ID;
> -  OptEnt.Para->ParaList[21] = DHCP4_TAG_T1;
> -  OptEnt.Para->ParaList[22] = DHCP4_TAG_T2;
> -  OptEnt.Para->ParaList[23] = DHCP4_TAG_VENDOR_CLASS_ID;
> -  OptEnt.Para->ParaList[24] = DHCP4_TAG_TFTP;
> -  OptEnt.Para->ParaList[25] = DHCP4_TAG_BOOTFILE;
> -  OptEnt.Para->ParaList[26] = DHCP4_TAG_UUID;
> -  OptEnt.Para->ParaList[27] = 0x80;
> -  OptEnt.Para->ParaList[28] = 0x81;
> -  OptEnt.Para->ParaList[29] = 0x82;
> -  OptEnt.Para->ParaList[30] = 0x83;
> -  OptEnt.Para->ParaList[31] = 0x84;
> -  OptEnt.Para->ParaList[32] = 0x85;
> -  OptEnt.Para->ParaList[33] = 0x86;
> -  OptEnt.Para->ParaList[34] = 0x87;
> -  Index++;
> -  OptList[Index]            = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -
> -  //
> -  // Append UUID/Guid-based client identifier option
> -  //
> -  OptList[Index]->OpCode  = DHCP4_TAG_UUID;
> -  OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UUID);
> -  OptEnt.Uuid             = (PXEBC_DHCP4_OPTION_UUID *) OptList[Index]->Data;
> -  OptEnt.Uuid->Type       = 0;
> -  Index++;
> -  OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -
> -  if (EFI_ERROR (NetLibGetSystemGuid ((EFI_GUID *) OptEnt.Uuid->Guid))) {
> -    //
> -    // GUID not yet set - send all 0xff's to show programable (via SetVariable)
> -    // SetMem(DHCPV4_OPTIONS_BUFFER.DhcpPlatformId.Guid,
> sizeof(EFI_GUID), 0xff);
> -    // GUID not yet set - send all 0's to show not programable
> -    //
> -    DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios
> table!\n"));
> -    ZeroMem (OptEnt.Uuid->Guid, sizeof (EFI_GUID));
> -  }
> -
> -  //
> -  // Append client network device interface option
> -  //
> -  OptList[Index]->OpCode  = DHCP4_TAG_UNDI;
> -  OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UNDI);
> -  OptEnt.Undi             = (PXEBC_DHCP4_OPTION_UNDI *) OptList[Index]->Data;
> -  if (Private->Nii != NULL) {
> -    OptEnt.Undi->Type       = Private->Nii->Type;
> -    OptEnt.Undi->MajorVer   = Private->Nii->MajorVer;
> -    OptEnt.Undi->MinorVer   = Private->Nii->MinorVer;
> -  } else {
> -    OptEnt.Undi->Type       = DEFAULT_UNDI_TYPE;
> -    OptEnt.Undi->MajorVer   = DEFAULT_UNDI_MAJOR;
> -    OptEnt.Undi->MinorVer   = DEFAULT_UNDI_MINOR;
> -  }
> -
> -  Index++;
> -  OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -
> -  //
> -  // Append client system architecture option
> -  //
> -  OptList[Index]->OpCode  = DHCP4_TAG_ARCH;
> -  OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_ARCH);
> -  OptEnt.Arch             = (PXEBC_DHCP4_OPTION_ARCH *) OptList[Index]->Data;
> -  Value                   = HTONS (EFI_PXE_CLIENT_SYSTEM_ARCHITECTURE);
> -  CopyMem (&OptEnt.Arch->Type, &Value, sizeof (UINT16));
> -  Index++;
> -  OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
> -
> -  //
> -  // Append client system architecture option
> -  //
> -  OptList[Index]->OpCode  = DHCP4_TAG_VENDOR_CLASS_ID;
> -  OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_CLID);
> -  OptEnt.Clid             = (PXEBC_DHCP4_OPTION_CLID *) OptList[Index]->Data;
> -  CopyMem (OptEnt.Clid, DEFAULT_CLASS_ID_DATA, sizeof
> (PXEBC_DHCP4_OPTION_CLID));
> -  CvtNum (EFI_PXE_CLIENT_SYSTEM_ARCHITECTURE, OptEnt.Clid-
> >ArchitectureType, sizeof (OptEnt.Clid->ArchitectureType));
> -
> -  if (Private->Nii != NULL) {
> -    //
> -    // If NII protocol exists, update DHCP option data
> -    //
> -    CopyMem (OptEnt.Clid->InterfaceName, Private->Nii->StringId, sizeof
> (OptEnt.Clid->InterfaceName));
> -    CvtNum (Private->Nii->MajorVer, OptEnt.Clid->UndiMajor, sizeof
> (OptEnt.Clid->UndiMajor));
> -    CvtNum (Private->Nii->MinorVer, OptEnt.Clid->UndiMinor, sizeof
> (OptEnt.Clid->UndiMinor));
> -  }
> -
> -  Index++;
> -
> -  return Index;
> -}
> -
> -
> -/**
> -  Discover the boot of service and initialize the vendor option if exists.
> -
> -  @param  Private               Pointer to PxeBc private data.
> -  @param  Type                  PxeBc option boot item type
> -  @param  Layer                 PxeBc option boot item layer
> -  @param  UseBis                Use BIS or not
> -  @param  DestIp                Ip address for server
> -  @param  IpCount               The total count of the server ip address
> -  @param  SrvList               Server list
> -  @param  IsDiscv               Discover the vendor or not
> -  @param  Reply                 The dhcp4 packet of Pxe reply
> -
> -  @retval EFI_SUCCESS           Operation succeeds.
> -  @retval EFI_OUT_OF_RESOURCES  Allocate memory pool failed.
> -  @retval EFI_NOT_FOUND         There is no vendor option exists.
> -  @retval EFI_TIMEOUT           Send Pxe Discover time out.
> -
> -**/
> -EFI_STATUS
> -PxeBcDiscvBootService (
> -  IN PXEBC_PRIVATE_DATA                * Private,
> -  IN UINT16                            Type,
> -  IN UINT16                            *Layer,
> -  IN BOOLEAN                           UseBis,
> -  IN EFI_IP_ADDRESS                    * DestIp,
> -  IN UINT16                            IpCount,
> -  IN EFI_PXE_BASE_CODE_SRVLIST         * SrvList,
> -  IN BOOLEAN                           IsDiscv,
> -  OUT EFI_DHCP4_PACKET                 * Reply OPTIONAL
> -  )
> -{
> -  EFI_PXE_BASE_CODE_UDP_PORT          Sport;
> -  EFI_PXE_BASE_CODE_MODE              *Mode;
> -  EFI_DHCP4_PROTOCOL                  *Dhcp4;
> -  EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN    Token;
> -  BOOLEAN                             IsBCast;
> -  EFI_STATUS                          Status;
> -  UINT16                              RepIndex;
> -  UINT16                              SrvIndex;
> -  UINT16                              TryIndex;
> -  EFI_DHCP4_LISTEN_POINT              ListenPoint;
> -  EFI_DHCP4_PACKET                    *Response;
> -  EFI_DHCP4_PACKET_OPTION
> *OptList[PXEBC_DHCP4_MAX_OPTION_NUM];
> -  UINT32                              OptCount;
> -  EFI_DHCP4_PACKET_OPTION             *PxeOpt;
> -  PXEBC_OPTION_BOOT_ITEM              *PxeBootItem;
> -  UINT8                               VendorOptLen;
> -  EFI_DHCP4_HEADER                    *DhcpHeader;
> -  UINT32                              Xid;
> -
> -  Mode      = Private->PxeBc.Mode;
> -  Dhcp4     = Private->Dhcp4;
> -  Status    = EFI_SUCCESS;
> -
> -  ZeroMem (&Token, sizeof (EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN));
> -
> -  if (DestIp == NULL) {
> -    Sport   = PXEBC_DHCP4_S_PORT;
> -    IsBCast = TRUE;
> -  } else {
> -    Sport   = PXEBC_BS_DISCOVER_PORT;
> -    IsBCast = FALSE;
> -  }
> -
> -  if (!UseBis && Layer != NULL) {
> -    *Layer &= EFI_PXE_BASE_CODE_BOOT_LAYER_MASK;
> -  }
> -
> -  OptCount = PxeBcBuildDhcpOptions (Private, OptList, FALSE);
> -
> -  if (IsDiscv) {
> -    ASSERT (Layer != NULL);
> -    //
> -    // Add vendor option of PXE_BOOT_ITEM
> -    //
> -    VendorOptLen = (UINT8) ((sizeof (EFI_DHCP4_PACKET_OPTION) - 1) * 2 +
> sizeof (PXEBC_OPTION_BOOT_ITEM) + 1);
> -    OptList[OptCount] = AllocatePool (VendorOptLen);
> -    if (OptList[OptCount] == NULL) {
> -      return EFI_OUT_OF_RESOURCES;
> -    }
> -
> -    OptList[OptCount]->OpCode     = DHCP4_TAG_VENDOR;
> -    OptList[OptCount]->Length     = (UINT8) (VendorOptLen - 2);
> -    PxeOpt                        = (EFI_DHCP4_PACKET_OPTION *) OptList[OptCount]-
> >Data;
> -    PxeOpt->OpCode                = PXEBC_VENDOR_TAG_BOOT_ITEM;
> -    PxeOpt->Length                = (UINT8) sizeof (PXEBC_OPTION_BOOT_ITEM);
> -    PxeBootItem                   = (PXEBC_OPTION_BOOT_ITEM *) PxeOpt->Data;
> -    PxeBootItem->Type             = HTONS (Type);
> -    PxeBootItem->Layer            = HTONS (*Layer);
> -    PxeOpt->Data[PxeOpt->Length]  = DHCP4_TAG_EOP;
> -
> -    OptCount++;
> -  }
> -
> -  Status = Dhcp4->Build (Dhcp4, &Private->SeedPacket, 0, NULL, OptCount,
> OptList, &Token.Packet);
> -
> -  if (IsDiscv) {
> -    FreePool (OptList[OptCount - 1]);
> -  }
> -
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  DhcpHeader = &Token.Packet->Dhcp4.Header;
> -  if (Mode->SendGUID) {
> -    if (EFI_ERROR (NetLibGetSystemGuid ((EFI_GUID *) DhcpHeader-
> >ClientHwAddr))) {
> -      //
> -      // GUID not yet set - send all 0's to show not programable
> -      //
> -      DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios
> table!\n"));
> -      ZeroMem (DhcpHeader->ClientHwAddr, sizeof (EFI_GUID));
> -    }
> -
> -    DhcpHeader->HwAddrLen = (UINT8) sizeof (EFI_GUID);
> -  }
> -
> -  Xid                                 = NET_RANDOM (NetRandomInitSeed ());
> -  Token.Packet->Dhcp4.Header.Xid      = HTONL(Xid);
> -  Token.Packet->Dhcp4.Header.Reserved = HTONS((UINT16) ((IsBCast) ?
> 0x8000 : 0));
> -  CopyMem (&Token.Packet->Dhcp4.Header.ClientAddr, &Private->StationIp,
> sizeof (EFI_IPv4_ADDRESS));
> -
> -  Token.RemotePort = Sport;
> -
> -  if (IsBCast) {
> -    SetMem (&Token.RemoteAddress, sizeof (EFI_IPv4_ADDRESS), 0xff);
> -  } else {
> -    CopyMem (&Token.RemoteAddress, DestIp, sizeof (EFI_IPv4_ADDRESS));
> -  }
> -
> -  CopyMem (&Token.GatewayAddress, &Private->GatewayIp, sizeof
> (EFI_IPv4_ADDRESS));
> -
> -  if (!IsBCast) {
> -    Token.ListenPointCount            = 1;
> -    Token.ListenPoints                = &ListenPoint;
> -    Token.ListenPoints[0].ListenPort  = PXEBC_BS_DISCOVER_PORT;
> -    CopyMem (&Token.ListenPoints[0].ListenAddress, &Private->StationIp,
> sizeof(EFI_IPv4_ADDRESS));
> -    CopyMem (&Token.ListenPoints[0].SubnetMask, &Private->SubnetMask,
> sizeof(EFI_IPv4_ADDRESS));
> -  }
> -  //
> -  // Send Pxe Discover
> -  //
> -  for (TryIndex = 1; TryIndex <= PXEBC_BOOT_REQUEST_RETRIES; TryIndex++) {
> -
> -    Token.TimeoutValue                  = (UINT16)
> (PXEBC_BOOT_REQUEST_TIMEOUT * TryIndex);
> -    Token.Packet->Dhcp4.Header.Seconds  = (UINT16)
> (PXEBC_BOOT_REQUEST_TIMEOUT * (TryIndex - 1));
> -
> -    Status              = Dhcp4->TransmitReceive (Dhcp4, &Token);
> -
> -    if (Token.Status != EFI_TIMEOUT) {
> -      break;
> -    }
> -  }
> -
> -  if (TryIndex > PXEBC_BOOT_REQUEST_RETRIES) {
> -    //
> -    // No server response our PXE request
> -    //
> -    Status = EFI_TIMEOUT;
> -  }
> -
> -  if (!EFI_ERROR (Status)) {
> -    //
> -    // Find Pxe Reply
> -    //
> -    RepIndex  = 0;
> -    SrvIndex  = 0;
> -    Response  = Token.ResponseList;
> -
> -    while (RepIndex < Token.ResponseCount) {
> -      if (Response->Length > PXEBC_DHCP4_MAX_PACKET_SIZE) {
> -        SrvIndex = 0;
> -        RepIndex++;
> -        Response = (EFI_DHCP4_PACKET *) ((UINT8 *) Response + Response->Size);
> -        continue;
> -      }
> -
> -      while (SrvIndex < IpCount) {
> -
> -        if (SrvList[SrvIndex].AcceptAnyResponse) {
> -          break;
> -        }
> -
> -        if ((SrvList[SrvIndex].Type == Type) && EFI_IP4_EQUAL (&(Response-
> >Dhcp4.Header.ServerAddr), &(Private->ServerIp))) {
> -          break;
> -        }
> -
> -        SrvIndex++;
> -      }
> -
> -      if ((IpCount != SrvIndex) || (IpCount == 0)) {
> -        break;
> -      }
> -
> -      SrvIndex = 0;
> -      RepIndex++;
> -      Response = (EFI_DHCP4_PACKET *) ((UINT8 *) Response + Response->Size);
> -    }
> -
> -    if (RepIndex < Token.ResponseCount) {
> -
> -      if (Reply != NULL) {
> -        Status = PxeBcCopyEfiDhcp4Packet (Reply, Response);
> -        if (EFI_ERROR(Status)) {
> -          goto ON_EXIT;
> -        }
> -      }
> -
> -      if (IsDiscv) {
> -        CopyMem (&(Mode->PxeDiscover), &(Token.Packet->Dhcp4),
> Token.Packet->Length);
> -        Mode->PxeDiscoverValid = TRUE;
> -
> -        CopyMem (Mode->PxeReply.Raw, &Response->Dhcp4, Response->Length);
> -        Mode->PxeReplyReceived = TRUE;
> -      }
> -    } else {
> -      Status = EFI_NOT_FOUND;
> -    }
> -  }
> -
> -ON_EXIT:
> -  //
> -  // free the responselist
> -  //
> -  if (Token.ResponseList != NULL) {
> -    FreePool (Token.ResponseList);
> -  }
> -  //
> -  // Free the dhcp packet
> -  //
> -  if (Token.Packet != NULL) {
> -    FreePool (Token.Packet);
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Parse interested dhcp options.
> -
> -  @param  Buffer     Pointer to the dhcp options packet.
> -  @param  Length     The length of the dhcp options.
> -  @param  OptTag     The option OpCode.
> -
> -  @return NULL if the buffer length is 0 and OpCode is not
> -          DHCP4_TAG_EOP, or the pointer to the buffer.
> -
> -**/
> -EFI_DHCP4_PACKET_OPTION *
> -PxeBcParseExtendOptions (
> -  IN UINT8                         *Buffer,
> -  IN UINT32                        Length,
> -  IN UINT8                         OptTag
> -  )
> -{
> -  EFI_DHCP4_PACKET_OPTION *Option;
> -  UINT32                  Offset;
> -
> -  Option  = (EFI_DHCP4_PACKET_OPTION *) Buffer;
> -  Offset  = 0;
> -
> -  while (Offset < Length && Option->OpCode != DHCP4_TAG_EOP) {
> -
> -    if (Option->OpCode == OptTag) {
> -
> -      return Option;
> -    }
> -
> -    if (Option->OpCode == DHCP4_TAG_PAD) {
> -      Offset++;
> -    } else {
> -      Offset += Option->Length + 2;
> -    }
> -
> -    Option = (EFI_DHCP4_PACKET_OPTION *) (Buffer + Offset);
> -  }
> -
> -  return NULL;
> -}
> -
> -
> -/**
> -  This function is to parse and check vendor options.
> -
> -  @param  Dhcp4Option           Pointer to dhcp options
> -  @param  VendorOption          Pointer to vendor options
> -
> -  @return TRUE if valid for vendor options, or FALSE.
> -
> -**/
> -BOOLEAN
> -PxeBcParseVendorOptions (
> -  IN EFI_DHCP4_PACKET_OPTION       *Dhcp4Option,
> -  IN PXEBC_VENDOR_OPTION           *VendorOption
> -  )
> -{
> -  UINT32                  *BitMap;
> -  UINT8                   VendorOptionLen;
> -  EFI_DHCP4_PACKET_OPTION *PxeOption;
> -  UINT8                   Offset;
> -
> -  BitMap          = VendorOption->BitMap;
> -  VendorOptionLen = Dhcp4Option->Length;
> -  PxeOption       = (EFI_DHCP4_PACKET_OPTION *) &Dhcp4Option->Data[0];
> -  Offset          = 0;
> -
> -  while ((Offset < VendorOptionLen) && (PxeOption->OpCode !=
> DHCP4_TAG_EOP)) {
> -    //
> -    // Parse every Vendor Option and set its BitMap
> -    //
> -    switch (PxeOption->OpCode) {
> -
> -    case PXEBC_VENDOR_TAG_MTFTP_IP:
> -
> -      CopyMem (&VendorOption->MtftpIp, PxeOption->Data, sizeof
> (EFI_IPv4_ADDRESS));
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MTFTP_CPORT:
> -
> -      CopyMem (&VendorOption->MtftpCPort, PxeOption->Data, sizeof
> (VendorOption->MtftpCPort));
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MTFTP_SPORT:
> -
> -      CopyMem (&VendorOption->MtftpSPort, PxeOption->Data, sizeof
> (VendorOption->MtftpSPort));
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MTFTP_TIMEOUT:
> -
> -      VendorOption->MtftpTimeout = *PxeOption->Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MTFTP_DELAY:
> -
> -      VendorOption->MtftpDelay = *PxeOption->Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_DISCOVER_CTRL:
> -
> -      VendorOption->DiscoverCtrl = *PxeOption->Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_DISCOVER_MCAST:
> -
> -      CopyMem (&VendorOption->DiscoverMcastIp, PxeOption->Data, sizeof
> (EFI_IPv4_ADDRESS));
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_BOOT_SERVERS:
> -
> -      VendorOption->BootSvrLen  = PxeOption->Length;
> -      VendorOption->BootSvr     = (PXEBC_BOOT_SVR_ENTRY *) PxeOption->Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_BOOT_MENU:
> -
> -      VendorOption->BootMenuLen = PxeOption->Length;
> -      VendorOption->BootMenu    = (PXEBC_BOOT_MENU_ENTRY *) PxeOption-
> >Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MENU_PROMPT:
> -
> -      VendorOption->MenuPromptLen = PxeOption->Length;
> -      VendorOption->MenuPrompt    = (PXEBC_MENU_PROMPT *) PxeOption-
> >Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_MCAST_ALLOC:
> -
> -      CopyMem (&VendorOption->McastIpBase, PxeOption->Data, sizeof
> (EFI_IPv4_ADDRESS));
> -      CopyMem (&VendorOption->McastIpBlock, PxeOption->Data + 4, sizeof
> (VendorOption->McastIpBlock));
> -      CopyMem (&VendorOption->McastIpRange, PxeOption->Data + 6, sizeof
> (VendorOption->McastIpRange));
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_CREDENTIAL_TYPES:
> -
> -      VendorOption->CredTypeLen = PxeOption->Length;
> -      VendorOption->CredType    = (UINT32 *) PxeOption->Data;
> -      break;
> -
> -    case PXEBC_VENDOR_TAG_BOOT_ITEM:
> -
> -      CopyMem (&VendorOption->BootSrvType, PxeOption->Data, sizeof
> (VendorOption->BootSrvType));
> -      CopyMem (&VendorOption->BootSrvLayer, PxeOption->Data + 2, sizeof
> (VendorOption->BootSrvLayer));
> -      break;
> -    }
> -
> -    SET_VENDOR_OPTION_BIT_MAP (BitMap, PxeOption->OpCode);
> -
> -    if (PxeOption->OpCode == DHCP4_TAG_PAD) {
> -      Offset++;
> -    } else {
> -      Offset = (UINT8) (Offset + PxeOption->Length + 2);
> -    }
> -
> -    PxeOption = (EFI_DHCP4_PACKET_OPTION *) (Dhcp4Option->Data + Offset);
> -  }
> -
> -  //
> -  // FixMe, return falas if invalid of any vendor option
> -  //
> -
> -  return TRUE;
> -}
> -
> -
> -/**
> -  This function display boot item detail.
> -
> -  If the length of the boot item string over 70 Char, just display 70 Char.
> -
> -  @param  Str     Pointer to a string (boot item string).
> -  @param  Len     The length of string.
> -
> -**/
> -VOID
> -PxeBcDisplayBootItem (
> -  IN UINT8                 *Str,
> -  IN UINT8                 Len
> -  )
> -{
> -  UINT8 Tmp;
> -
> -  Len       = (UINT8) MIN (70, Len);
> -  Tmp       = Str[Len];
> -  Str[Len]  = 0;
> -  AsciiPrint ("%a \n", Str);
> -  Str[Len] = Tmp;
> -}
> -
> -
> -/**
> -  Choose the boot prompt.
> -
> -  @param  Private              Pointer to PxeBc private data.
> -
> -  @retval EFI_SUCCESS          Select boot prompt done.
> -  @retval EFI_TIMEOUT          Select boot prompt time out.
> -  @retval EFI_NOT_FOUND        The proxy offer is not Pxe10.
> -  @retval EFI_ABORTED          User cancel the operation.
> -  @retval EFI_NOT_READY        Read the input key from the keybroad has not
> finish.
> -
> -**/
> -EFI_STATUS
> -PxeBcSelectBootPrompt (
> -  IN PXEBC_PRIVATE_DATA              *Private
> -  )
> -{
> -  PXEBC_CACHED_DHCP4_PACKET  *Packet;
> -  PXEBC_VENDOR_OPTION       *VendorOpt;
> -  EFI_EVENT                  TimeoutEvent;
> -  EFI_EVENT                  DescendEvent;
> -  EFI_INPUT_KEY              InputKey;
> -  EFI_STATUS                 Status;
> -  UINT8                      Timeout;
> -  UINT8                      *Prompt;
> -  UINT8                      PromptLen;
> -  INT32                      SecCol;
> -  INT32                      SecRow;
> -
> -  TimeoutEvent  = NULL;
> -  DescendEvent  = NULL;
> -
> -  if (Private->PxeBc.Mode->ProxyOfferReceived) {
> -
> -    Packet  = &Private->ProxyOffer;
> -  } else {
> -
> -    Packet  = &Private->Dhcp4Ack;
> -  }
> -
> -  if (Packet->OfferType != DHCP4_PACKET_TYPE_PXE10) {
> -    return EFI_NOT_FOUND;
> -  }
> -
> -  VendorOpt = &Packet->PxeVendorOption;
> -  //
> -  // According to the PXE specification 2.1, Table 2-1 PXE DHCP Options  (Full
> -  // List), we must not consider a boot prompt or boot menu if all of the
> -  // following hold:
> -  // - the PXE_DISCOVERY_CONTROL PXE tag is present inside the Vendor
> Options
> -  //   (=43) DHCP tag, and
> -  // - the PXE_DISCOVERY_CONTROL PXE tag has bit 3 set, and
> -  // - a boot file name has been presented with DHCP option 67.
> -  //
> -  if (IS_DISABLE_PROMPT_MENU (VendorOpt->DiscoverCtrl) &&
> -      Packet->Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {
> -    return EFI_ABORTED;
> -  }
> -
> -  if (!IS_VALID_BOOT_PROMPT (VendorOpt->BitMap)) {
> -    return EFI_SUCCESS;
> -  }
> -
> -  Timeout   = VendorOpt->MenuPrompt->Timeout;
> -  Prompt    = VendorOpt->MenuPrompt->Prompt;
> -  PromptLen = (UINT8) (VendorOpt->MenuPromptLen - 1);
> -
> -  if (Timeout == 0) {
> -    return EFI_SUCCESS;
> -  }
> -
> -  if (Timeout == 255) {
> -    return EFI_TIMEOUT;
> -  }
> -
> -  Status = gBS->CreateEvent (
> -                  EVT_TIMER,
> -                  TPL_CALLBACK,
> -                  NULL,
> -                  NULL,
> -                  &TimeoutEvent
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  Status = gBS->SetTimer (
> -                  TimeoutEvent,
> -                  TimerRelative,
> -                  MultU64x32 (Timeout, TICKS_PER_SECOND)
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  Status = gBS->CreateEvent (
> -                  EVT_TIMER,
> -                  TPL_CALLBACK,
> -                  NULL,
> -                  NULL,
> -                  &DescendEvent
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  Status = gBS->SetTimer (
> -                  DescendEvent,
> -                  TimerPeriodic,
> -                  TICKS_PER_SECOND
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  SecCol = gST->ConOut->Mode->CursorColumn;
> -  SecRow = gST->ConOut->Mode->CursorRow;
> -
> -  PxeBcDisplayBootItem (Prompt, PromptLen);
> -
> -  gST->ConOut->SetCursorPosition (gST->ConOut, SecCol + PromptLen,
> SecRow);
> -  AsciiPrint ("(%d) ", Timeout--);
> -
> -  while (EFI_ERROR (gBS->CheckEvent (TimeoutEvent))) {
> -
> -    if (!EFI_ERROR (gBS->CheckEvent (DescendEvent))) {
> -      gST->ConOut->SetCursorPosition (gST->ConOut, SecCol + PromptLen,
> SecRow);
> -      AsciiPrint ("(%d) ", Timeout--);
> -    }
> -
> -    if (gST->ConIn->ReadKeyStroke (gST->ConIn, &InputKey) == EFI_NOT_READY)
> {
> -
> -      gBS->Stall (10 * TICKS_PER_MS);
> -      continue;
> -    }
> -
> -    if (InputKey.ScanCode == 0) {
> -
> -      switch (InputKey.UnicodeChar) {
> -      case CTRL ('c'):
> -        Status = EFI_ABORTED;
> -        break;
> -
> -      case CTRL ('m'):
> -      case 'm':
> -      case 'M':
> -        Status = EFI_TIMEOUT;
> -        break;
> -
> -      default:
> -        continue;
> -      }
> -    } else {
> -
> -      switch (InputKey.ScanCode) {
> -      case SCAN_F8:
> -        Status = EFI_TIMEOUT;
> -        break;
> -
> -      case SCAN_ESC:
> -        Status = EFI_ABORTED;
> -        break;
> -
> -      default:
> -        continue;
> -      }
> -    }
> -
> -    break;
> -  }
> -
> -  gST->ConOut->SetCursorPosition (gST->ConOut, 0 , SecRow + 1);
> -
> -ON_EXIT:
> -
> -  if (DescendEvent != NULL) {
> -    gBS->CloseEvent (DescendEvent);
> -  }
> -
> -  if (TimeoutEvent != NULL) {
> -    gBS->CloseEvent (TimeoutEvent);
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Select the boot menu.
> -
> -  @param  Private         Pointer to PxeBc private data.
> -  @param  Type            The type of the menu.
> -  @param  UseDefaultItem  Use default item or not.
> -
> -  @retval EFI_ABORTED     User cancel operation.
> -  @retval EFI_SUCCESS     Select the boot menu success.
> -  @retval EFI_NOT_READY   Read the input key from the keybroad has not finish.
> -
> -**/
> -EFI_STATUS
> -PxeBcSelectBootMenu (
> -  IN  PXEBC_PRIVATE_DATA              *Private,
> -  OUT UINT16                          *Type,
> -  IN  BOOLEAN                         UseDefaultItem
> -  )
> -{
> -  PXEBC_CACHED_DHCP4_PACKET  *Packet;
> -  PXEBC_VENDOR_OPTION        *VendorOpt;
> -  EFI_INPUT_KEY              InputKey;
> -  UINT8                      MenuSize;
> -  UINT8                      MenuNum;
> -  INT32                      TopRow;
> -  UINT16                     Select;
> -  UINT16                     LastSelect;
> -  UINT8                      Index;
> -  BOOLEAN                    Finish;
> -  CHAR8                      Blank[70];
> -  PXEBC_BOOT_MENU_ENTRY      *MenuItem;
> -  PXEBC_BOOT_MENU_ENTRY      *MenuArray[PXEBC_MAX_MENU_NUM];
> -
> -  Finish  = FALSE;
> -  Select  = 0;
> -  Index   = 0;
> -  *Type   = 0;
> -
> -  if (Private->PxeBc.Mode->ProxyOfferReceived) {
> -
> -    Packet  = &Private->ProxyOffer;
> -  } else {
> -
> -    Packet  = &Private->Dhcp4Ack;
> -  }
> -
> -  ASSERT (Packet->OfferType == DHCP4_PACKET_TYPE_PXE10);
> -
> -  VendorOpt = &Packet->PxeVendorOption;
> -
> -  if (!IS_VALID_BOOT_MENU (VendorOpt->BitMap)) {
> -    return EFI_SUCCESS;
> -  }
> -
> -  SetMem (Blank, sizeof(Blank), ' ');
> -
> -  MenuSize  = VendorOpt->BootMenuLen;
> -  MenuItem  = VendorOpt->BootMenu;
> -
> -  if (MenuSize == 0) {
> -    return EFI_NOT_READY;
> -  }
> -
> -  while (MenuSize > 0) {
> -    MenuArray[Index++]  = MenuItem;
> -    MenuSize          = (UINT8) (MenuSize - (MenuItem->DescLen + 3));
> -    MenuItem          = (PXEBC_BOOT_MENU_ENTRY *) ((UINT8 *) MenuItem +
> MenuItem->DescLen + 3);
> -    if (Index >= PXEBC_MAX_MENU_NUM) {
> -      break;
> -    }
> -  }
> -
> -  if (UseDefaultItem) {
> -    *Type = MenuArray[0]->Type;
> -    *Type = NTOHS (*Type);
> -    return EFI_SUCCESS;
> -  }
> -
> -  MenuNum = Index;
> -
> -  for (Index = 0; Index < MenuNum; Index++) {
> -    PxeBcDisplayBootItem (MenuArray[Index]->DescStr, MenuArray[Index]-
> >DescLen);
> -  }
> -
> -  TopRow  = gST->ConOut->Mode->CursorRow - MenuNum;
> -
> -  do {
> -    ASSERT (Select < PXEBC_MAX_MENU_NUM);
> -    //
> -    // highlight selected row
> -    //
> -    gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_BLACK,
> EFI_LIGHTGRAY));
> -    gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + Select);
> -    Blank[MenuArray[Select]->DescLen] = 0;
> -    AsciiPrint ("%a\r", Blank);
> -    PxeBcDisplayBootItem (MenuArray[Select]->DescStr, MenuArray[Select]-
> >DescLen);
> -    gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + MenuNum);
> -    LastSelect = Select;
> -
> -    while (gST->ConIn->ReadKeyStroke (gST->ConIn, &InputKey) ==
> EFI_NOT_READY) {
> -      gBS->Stall (10 * TICKS_PER_MS);
> -    }
> -
> -    if (InputKey.ScanCode == 0) {
> -      switch (InputKey.UnicodeChar) {
> -      case CTRL ('c'):
> -        InputKey.ScanCode = SCAN_ESC;
> -        break;
> -
> -      case CTRL ('j'):  /* linefeed */
> -      case CTRL ('m'):  /* return */
> -        Finish = TRUE;
> -        break;
> -
> -      case CTRL ('i'):  /* tab */
> -      case ' ':
> -      case 'd':
> -      case 'D':
> -        InputKey.ScanCode = SCAN_DOWN;
> -        break;
> -
> -      case CTRL ('h'):  /* backspace */
> -      case 'u':
> -      case 'U':
> -        InputKey.ScanCode = SCAN_UP;
> -        break;
> -
> -      default:
> -        InputKey.ScanCode = 0;
> -      }
> -    }
> -
> -    switch (InputKey.ScanCode) {
> -    case SCAN_LEFT:
> -    case SCAN_UP:
> -      if (Select > 0) {
> -        --Select;
> -      }
> -
> -      break;
> -
> -    case SCAN_DOWN:
> -    case SCAN_RIGHT:
> -      if (++Select == MenuNum) {
> -        --Select;
> -      }
> -
> -      break;
> -
> -    case SCAN_PAGE_UP:
> -    case SCAN_HOME:
> -      Select = 0;
> -      break;
> -
> -    case SCAN_PAGE_DOWN:
> -    case SCAN_END:
> -      Select = (UINT16) (MenuNum - 1);
> -      break;
> -
> -    case SCAN_ESC:
> -      return EFI_ABORTED;
> -    }
> -
> -    /* unhighlight last selected row */
> -    gST->ConOut->SetAttribute (gST->ConOut, EFI_TEXT_ATTR (EFI_LIGHTGRAY,
> EFI_BLACK));
> -    gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + LastSelect);
> -    Blank[MenuArray[LastSelect]->DescLen] = 0;
> -    AsciiPrint ("%a\r", Blank);
> -    PxeBcDisplayBootItem (MenuArray[LastSelect]->DescStr,
> MenuArray[LastSelect]->DescLen);
> -    gST->ConOut->SetCursorPosition (gST->ConOut, 0, TopRow + MenuNum);
> -  } while (!Finish);
> -
> -   ASSERT (Select < PXEBC_MAX_MENU_NUM);
> -
> -  //
> -  // Swap the byte order
> -  //
> -  CopyMem (Type, &MenuArray[Select]->Type, sizeof (UINT16));
> -  *Type = NTOHS (*Type);
> -
> -  return EFI_SUCCESS;
> -}
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
> deleted file mode 100644
> index 76c140d8e3ff..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
> +++ /dev/null
> @@ -1,665 +0,0 @@
> -/** @file
> -  The driver binding for UEFI PXEBC protocol.
> -
> -Copyright (c) 2007 - 2015, 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.
> -
> -**/
> -
> -
> -#include "PxeBcImpl.h"
> -
> -EFI_DRIVER_BINDING_PROTOCOL gPxeBcDriverBinding = {
> -  PxeBcDriverBindingSupported,
> -  PxeBcDriverBindingStart,
> -  PxeBcDriverBindingStop,
> -  0xa,
> -  NULL,
> -  NULL
> -};
> -
> -/**
> -  This is the declaration of an EFI image entry point. This entry point is
> -  the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
> -  both device drivers and bus drivers.
> -
> -  @param  ImageHandle           The firmware allocated handle for the UEFI
> image.
> -  @param  SystemTable           A pointer to the EFI System Table.
> -
> -  @retval EFI_SUCCESS           The operation completed successfully.
> -  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to
> a lack of resources.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverEntryPoint (
> -  IN EFI_HANDLE             ImageHandle,
> -  IN EFI_SYSTEM_TABLE       *SystemTable
> -  )
> -{
> -  return EfiLibInstallDriverBindingComponentName2 (
> -          ImageHandle,
> -          SystemTable,
> -          &gPxeBcDriverBinding,
> -          ImageHandle,
> -          &gPxeBcComponentName,
> -          &gPxeBcComponentName2
> -          );
> -}
> -
> -
> -/**
> -  Test to see if this driver supports ControllerHandle. This service
> -  is called by the EFI boot service ConnectController(). In
> -  order to make drivers as small as possible, there are a few calling
> -  restrictions for this service. ConnectController() must
> -  follow these calling restrictions. If any other agent wishes to call
> -  Supported() it must also follow these calling restrictions.
> -  PxeBc requires DHCP4 and MTFTP4 protocols.
> -
> -  @param  This                Protocol instance pointer.
> -  @param  ControllerHandle    Handle of device to test
> -  @param  RemainingDevicePath Optional parameter use to pick a specific child
> -                              device to start.
> -
> -  @retval EFI_SUCCESS         This driver supports this device
> -  @retval EFI_ALREADY_STARTED This driver is already running on this device
> -  @retval other               This driver does not support this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingSupported (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  * This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN EFI_DEVICE_PATH_PROTOCOL     * RemainingDevicePath OPTIONAL
> -  )
> -{
> -  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
> -  EFI_STATUS                  Status;
> -
> -  Status = gBS->OpenProtocol (
> -                  ControllerHandle,
> -                  &gEfiPxeBaseCodeProtocolGuid,
> -                  (VOID **) &PxeBc,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
> -                  );
> -
> -  if (!EFI_ERROR (Status)) {
> -    return EFI_ALREADY_STARTED;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  ControllerHandle,
> -                  &gEfiDhcp4ServiceBindingProtocolGuid,
> -                  NULL,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> -                  );
> -
> -  if (!EFI_ERROR (Status)) {
> -
> -    Status = gBS->OpenProtocol (
> -                    ControllerHandle,
> -                    &gEfiMtftp4ServiceBindingProtocolGuid,
> -                    NULL,
> -                    This->DriverBindingHandle,
> -                    ControllerHandle,
> -                    EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> -                    );
> -
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Start this driver on ControllerHandle. This service is called by the
> -  EFI boot service ConnectController(). In order to make
> -  drivers as small as possible, there are a few calling restrictions for
> -  this service. ConnectController() must follow these
> -  calling restrictions. If any other agent wishes to call Start() it
> -  must also follow these calling restrictions.
> -
> -  @param  This                 Protocol instance pointer.
> -  @param  ControllerHandle     Handle of device to bind driver to
> -  @param  RemainingDevicePath  Optional parameter use to pick a specific child
> -                               device to start.
> -
> -  @retval EFI_SUCCESS          This driver is added to ControllerHandle
> -  @retval EFI_ALREADY_STARTED  This driver is already running on
> ControllerHandle
> -  @retval other                This driver does not support this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingStart (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  * This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN EFI_DEVICE_PATH_PROTOCOL     * RemainingDevicePath OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA  *Private;
> -  UINTN               Index;
> -  EFI_STATUS          Status;
> -  EFI_IP4_MODE_DATA   Ip4ModeData;
> -
> -  Private = AllocateZeroPool (sizeof (PXEBC_PRIVATE_DATA));
> -  if (Private == NULL) {
> -    return EFI_OUT_OF_RESOURCES;
> -  }
> -
> -  Private->Signature                    = PXEBC_PRIVATE_DATA_SIGNATURE;
> -  Private->Controller                   = ControllerHandle;
> -  Private->Image                        = This->DriverBindingHandle;
> -  CopyMem (&Private->PxeBc, &mPxeBcProtocolTemplate, sizeof (Private-
> >PxeBc));
> -  Private->PxeBc.Mode                   = &Private->Mode;
> -  CopyMem (&Private->LoadFile, &mLoadFileProtocolTemplate, sizeof (Private-
> >LoadFile));
> -
> -  Private->ProxyOffer.Packet.Offer.Size =
> PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE;
> -  Private->Dhcp4Ack.Packet.Ack.Size     =
> PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE;
> -  Private->PxeReply.Packet.Ack.Size     =
> PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE;
> -
> -  for (Index = 0; Index < PXEBC_MAX_OFFER_NUM; Index++) {
> -    Private->Dhcp4Offers[Index].Packet.Offer.Size =
> PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE;
> -  }
> -
> -  //
> -  // Get the NII interface if it exists.
> -  //
> -  Status = gBS->OpenProtocol (
> -                  ControllerHandle,
> -                  &gEfiNetworkInterfaceIdentifierProtocolGuid_31,
> -                  (VOID **) &Private->Nii,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    Private->Nii = NULL;
> -  }
> -
> -  Status = NetLibCreateServiceChild (
> -            ControllerHandle,
> -            This->DriverBindingHandle,
> -            &gEfiArpServiceBindingProtocolGuid,
> -            &Private->ArpChild
> -            );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  Private->ArpChild,
> -                  &gEfiArpProtocolGuid,
> -                  (VOID **) &Private->Arp,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = NetLibCreateServiceChild (
> -            ControllerHandle,
> -            This->DriverBindingHandle,
> -            &gEfiDhcp4ServiceBindingProtocolGuid,
> -            &Private->Dhcp4Child
> -            );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  Private->Dhcp4Child,
> -                  &gEfiDhcp4ProtocolGuid,
> -                  (VOID **) &Private->Dhcp4,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = NetLibCreateServiceChild (
> -             ControllerHandle,
> -             This->DriverBindingHandle,
> -             &gEfiIp4ServiceBindingProtocolGuid,
> -             &Private->Ip4Child
> -             );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  Private->Ip4Child,
> -                  &gEfiIp4ProtocolGuid,
> -                  (VOID **) &Private->Ip4,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  //
> -  // Get max packet size from Ip4 to calculate block size for Tftp later.
> -  //
> -  Status = Private->Ip4->GetModeData (Private->Ip4, &Ip4ModeData, NULL,
> NULL);
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Private->Ip4MaxPacketSize = Ip4ModeData.MaxPacketSize;
> -
> -  Status = NetLibCreateServiceChild (
> -             ControllerHandle,
> -             This->DriverBindingHandle,
> -             &gEfiMtftp4ServiceBindingProtocolGuid,
> -             &Private->Mtftp4Child
> -             );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  Private->Mtftp4Child,
> -                  &gEfiMtftp4ProtocolGuid,
> -                  (VOID **) &Private->Mtftp4,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = NetLibCreateServiceChild (
> -             ControllerHandle,
> -             This->DriverBindingHandle,
> -             &gEfiUdp4ServiceBindingProtocolGuid,
> -             &Private->Udp4ReadChild
> -             );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  //
> -  // The UDP instance for EfiPxeBcUdpRead
> -  //
> -  Status = gBS->OpenProtocol (
> -                  Private->Udp4ReadChild,
> -                  &gEfiUdp4ProtocolGuid,
> -                  (VOID **) &Private->Udp4Read,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  //
> -  // The UDP instance for EfiPxeBcUdpWrite
> -  //
> -  Status = NetLibCreateServiceChild (
> -             ControllerHandle,
> -             This->DriverBindingHandle,
> -             &gEfiUdp4ServiceBindingProtocolGuid,
> -             &Private->Udp4WriteChild
> -             );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  Private->Udp4WriteChild,
> -                  &gEfiUdp4ProtocolGuid,
> -                  (VOID **) &Private->Udp4Write,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_BY_DRIVER
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -  ZeroMem (&Private->Udp4CfgData, sizeof (EFI_UDP4_CONFIG_DATA));
> -  Private->Udp4CfgData.AcceptBroadcast    = FALSE;
> -  Private->Udp4CfgData.AcceptPromiscuous  = FALSE;
> -  Private->Udp4CfgData.AcceptAnyPort      = TRUE;
> -  Private->Udp4CfgData.AllowDuplicatePort = TRUE;
> -  Private->Udp4CfgData.TypeOfService      = DEFAULT_ToS;
> -  Private->Udp4CfgData.TimeToLive         = DEFAULT_TTL;
> -  Private->Udp4CfgData.DoNotFragment      = FALSE;
> -  Private->Udp4CfgData.ReceiveTimeout     = PXEBC_DEFAULT_LIFETIME;
> -  Private->Udp4CfgData.UseDefaultAddress  = FALSE;
> -
> -  PxeBcInitSeedPacket (&Private->SeedPacket, Private->Udp4Read);
> -  Private->MacLen = Private->SeedPacket.Dhcp4.Header.HwAddrLen;
> -  CopyMem (&Private->Mac, &Private-
> >SeedPacket.Dhcp4.Header.ClientHwAddr[0], Private->MacLen);
> -
> -
> -  ZeroMem (&Private->Ip4ConfigData, sizeof (EFI_IP4_CONFIG_DATA));
> -  Private->Ip4ConfigData.DefaultProtocol   = EFI_IP_PROTO_ICMP;
> -  Private->Ip4ConfigData.AcceptIcmpErrors  = TRUE;
> -  Private->Ip4ConfigData.TypeOfService     = DEFAULT_ToS;
> -  Private->Ip4ConfigData.TimeToLive        = DEFAULT_TTL;
> -  Private->Ip4ConfigData.DoNotFragment     = FALSE;
> -  Private->Ip4ConfigData.RawData           = FALSE;
> -
> -  Status = gBS->InstallMultipleProtocolInterfaces (
> -                  &ControllerHandle,
> -                  &gEfiPxeBaseCodeProtocolGuid,
> -                  &Private->PxeBc,
> -                  &gEfiLoadFileProtocolGuid,
> -                  &Private->LoadFile,
> -                  NULL
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -  //
> -  // Locate Ip4->Ip4Config2 and store it for set IPv4 Policy.
> -  //
> -  Status = gBS->HandleProtocol (
> -                  ControllerHandle,
> -                  &gEfiIp4Config2ProtocolGuid,
> -                  (VOID **) &Private->Ip4Config2
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_ERROR;
> -  }
> -
> -  return EFI_SUCCESS;
> -
> -ON_ERROR:
> -
> -  if (Private->Udp4WriteChild != NULL) {
> -    gBS->CloseProtocol (
> -           Private->Udp4WriteChild,
> -           &gEfiUdp4ProtocolGuid,
> -           This->DriverBindingHandle,
> -           ControllerHandle
> -           );
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiUdp4ServiceBindingProtocolGuid,
> -      Private->Udp4WriteChild
> -      );
> -  }
> -
> -  if (Private->Udp4ReadChild != NULL) {
> -    gBS->CloseProtocol (
> -          Private->Udp4ReadChild,
> -          &gEfiUdp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          ControllerHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiUdp4ServiceBindingProtocolGuid,
> -      Private->Udp4ReadChild
> -      );
> -  }
> -
> -  if (Private->Mtftp4Child != NULL) {
> -    gBS->CloseProtocol (
> -          Private->Mtftp4Child,
> -          &gEfiMtftp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          ControllerHandle
> -          );
> -
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiMtftp4ServiceBindingProtocolGuid,
> -      Private->Mtftp4Child
> -      );
> -  }
> -
> -  if (Private->Ip4Child != NULL) {
> -    gBS->CloseProtocol (
> -          Private->Ip4Child,
> -          &gEfiIp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          ControllerHandle
> -          );
> -
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiIp4ServiceBindingProtocolGuid,
> -      Private->Ip4Child
> -      );
> -  }
> -
> -  if (Private->Dhcp4Child != NULL) {
> -    gBS->CloseProtocol (
> -          Private->Dhcp4Child,
> -          &gEfiDhcp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          ControllerHandle
> -          );
> -
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiDhcp4ServiceBindingProtocolGuid,
> -      Private->Dhcp4Child
> -      );
> -  }
> -
> -  if (Private->ArpChild != NULL) {
> -    gBS->CloseProtocol (
> -          Private->ArpChild,
> -          &gEfiArpProtocolGuid,
> -          This->DriverBindingHandle,
> -          ControllerHandle
> -          );
> -
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiArpServiceBindingProtocolGuid,
> -      Private->ArpChild
> -      );
> -  }
> -
> -  FreePool (Private);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Stop this driver on ControllerHandle. This service is called by the
> -  EFI boot service DisconnectController(). In order to
> -  make drivers as small as possible, there are a few calling
> -  restrictions for this service. DisconnectController()
> -  must follow these calling restrictions. If any other agent wishes
> -  to call Stop() it must also follow these calling restrictions.
> -
> -  @param  This              Protocol instance pointer.
> -  @param  ControllerHandle  Handle of device to stop driver on
> -  @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If
> number of
> -                            children is zero stop the entire bus driver.
> -  @param  ChildHandleBuffer List of Child Handles to Stop.
> -
> -  @retval EFI_SUCCESS       This driver is removed ControllerHandle
> -  @retval other             This driver was not removed from this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingStop (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN UINTN                        NumberOfChildren,
> -  IN EFI_HANDLE                   *ChildHandleBuffer
> -  )
> -{
> -  PXEBC_PRIVATE_DATA          *Private;
> -  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
> -  EFI_HANDLE                  NicHandle;
> -  EFI_STATUS                  Status;
> -
> -  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiArpProtocolGuid);
> -  if (NicHandle == NULL) {
> -    NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiDhcp4ProtocolGuid);
> -
> -    if (NicHandle == NULL) {
> -      NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiIp4ProtocolGuid);
> -
> -      if (NicHandle == NULL) {
> -        NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiUdp4ProtocolGuid);
> -
> -        if (NicHandle == NULL) {
> -          NicHandle = NetLibGetNicHandle (ControllerHandle,
> &gEfiMtftp4ProtocolGuid);
> -
> -          if (NicHandle == NULL) {
> -            return EFI_SUCCESS;
> -          }
> -        }
> -      }
> -    }
> -  }
> -
> -  Status = gBS->OpenProtocol (
> -                  NicHandle,
> -                  &gEfiPxeBaseCodeProtocolGuid,
> -                  (VOID **) &PxeBc,
> -                  This->DriverBindingHandle,
> -                  ControllerHandle,
> -                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  //
> -  // Stop functionality of PXE Base Code protocol
> -  //
> -  Status = PxeBc->Stop (PxeBc);
> -  if (Status != EFI_SUCCESS && Status != EFI_NOT_STARTED) {
> -    return Status;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (PxeBc);
> -
> -  Status = gBS->UninstallMultipleProtocolInterfaces (
> -                  NicHandle,
> -                  &gEfiPxeBaseCodeProtocolGuid,
> -                  &Private->PxeBc,
> -                  &gEfiLoadFileProtocolGuid,
> -                  &Private->LoadFile,
> -                  NULL
> -                  );
> -
> -  if (!EFI_ERROR (Status)) {
> -
> -    gBS->CloseProtocol (
> -           Private->Udp4WriteChild,
> -           &gEfiUdp4ProtocolGuid,
> -           This->DriverBindingHandle,
> -           NicHandle
> -           );
> -    NetLibDestroyServiceChild (
> -      ControllerHandle,
> -      This->DriverBindingHandle,
> -      &gEfiUdp4ServiceBindingProtocolGuid,
> -      Private->Udp4WriteChild
> -      );
> -
> -    gBS->CloseProtocol (
> -          Private->Udp4ReadChild,
> -          &gEfiUdp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          NicHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      NicHandle,
> -      This->DriverBindingHandle,
> -      &gEfiUdp4ServiceBindingProtocolGuid,
> -      Private->Udp4ReadChild
> -      );
> -
> -    gBS->CloseProtocol (
> -          Private->Dhcp4Child,
> -          &gEfiDhcp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          NicHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      NicHandle,
> -      This->DriverBindingHandle,
> -      &gEfiDhcp4ServiceBindingProtocolGuid,
> -      Private->Dhcp4Child
> -      );
> -
> -    gBS->CloseProtocol (
> -          Private->Mtftp4Child,
> -          &gEfiMtftp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          NicHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      NicHandle,
> -      This->DriverBindingHandle,
> -      &gEfiMtftp4ServiceBindingProtocolGuid,
> -      Private->Mtftp4Child
> -      );
> -
> -    gBS->CloseProtocol (
> -          Private->Ip4Child,
> -          &gEfiIp4ProtocolGuid,
> -          This->DriverBindingHandle,
> -          NicHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      NicHandle,
> -      This->DriverBindingHandle,
> -      &gEfiIp4ServiceBindingProtocolGuid,
> -      Private->Ip4Child
> -      );
> -
> -    gBS->CloseProtocol (
> -          Private->ArpChild,
> -          &gEfiArpProtocolGuid,
> -          This->DriverBindingHandle,
> -          NicHandle
> -          );
> -    NetLibDestroyServiceChild (
> -      NicHandle,
> -      This->DriverBindingHandle,
> -      &gEfiArpServiceBindingProtocolGuid,
> -      Private->ArpChild
> -      );
> -
> -    FreePool (Private);
> -  }
> -
> -  return Status;
> -}
> -
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
> deleted file mode 100644
> index 3fa3be99c178..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
> +++ /dev/null
> @@ -1,2989 +0,0 @@
> -/** @file
> -  Interface routines for PxeBc.
> -
> -Copyright (c) 2007 - 2018, 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.
> -
> -**/
> -
> -
> -#include "PxeBcImpl.h"
> -
> -UINT32  mPxeDhcpTimeout[4] = { 4, 8, 16, 32 };
> -
> -/**
> -  Get and record the arp cache.
> -
> -  @param  This                    Pointer to EFI_PXE_BC_PROTOCOL
> -
> -  @retval EFI_SUCCESS             Arp cache updated successfully
> -  @retval others                  If error occurs when getting arp cache
> -
> -**/
> -EFI_STATUS
> -UpdateArpCache (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL     * This
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_STATUS              Status;
> -  UINT32                  EntryLength;
> -  UINT32                  EntryCount;
> -  EFI_ARP_FIND_DATA       *Entries;
> -  UINT32                  Index;
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  Status = Private->Arp->Find (
> -                     Private->Arp,
> -                     TRUE,
> -                     NULL,
> -                     &EntryLength,
> -                     &EntryCount,
> -                     &Entries,
> -                     TRUE
> -                     );
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  Mode->ArpCacheEntries = MIN (
> -                           EntryCount,
> -                           EFI_PXE_BASE_CODE_MAX_ARP_ENTRIES
> -                           );
> -  for (Index = 0; Index < Mode->ArpCacheEntries; Index ++) {
> -    CopyMem (
> -      &Mode->ArpCache[Index].IpAddr,
> -      Entries + 1,
> -      Entries->SwAddressLength
> -      );
> -    CopyMem (
> -      &Mode->ArpCache[Index].MacAddr,
> -      (UINT8 *) (Entries + 1) + Entries->SwAddressLength,
> -      Entries->HwAddressLength
> -      );
> -    //
> -    // Slip to the next FindData.
> -    //
> -    Entries = (EFI_ARP_FIND_DATA *) ((UINT8 *) Entries + EntryLength);
> -  }
> -
> -  return EFI_SUCCESS;
> -}
> -
> -/**
> -  Timeout routine to update arp cache.
> -
> -  @param  Event              Pointer to EFI_PXE_BC_PROTOCOL
> -  @param  Context            Context of the timer event
> -
> -**/
> -VOID
> -EFIAPI
> -ArpCacheUpdateTimeout (
> -  IN EFI_EVENT    Event,
> -  IN VOID         *Context
> -  )
> -{
> -  UpdateArpCache ((EFI_PXE_BASE_CODE_PROTOCOL *) Context);
> -}
> -
> -/**
> -  Do arp resolution from arp cache in PxeBcMode.
> -
> -  @param  PxeBcMode      The PXE BC mode to look into.
> -  @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           The resolution is successful.
> -  @retval FALSE          Otherwise.
> -
> -**/
> -BOOLEAN
> -FindInArpCache (
> -  IN  EFI_PXE_BASE_CODE_MODE    *PxeBcMode,
> -  IN  EFI_IPv4_ADDRESS          *Ip4Addr,
> -  OUT EFI_MAC_ADDRESS           *MacAddress
> -  )
> -{
> -  UINT32                  Index;
> -
> -  for (Index = 0; Index < PxeBcMode->ArpCacheEntries; Index ++) {
> -    if (EFI_IP4_EQUAL (&PxeBcMode->ArpCache[Index].IpAddr.v4, Ip4Addr)) {
> -      CopyMem (
> -        MacAddress,
> -        &PxeBcMode->ArpCache[Index].MacAddr,
> -        sizeof (EFI_MAC_ADDRESS)
> -        );
> -      return TRUE;
> -    }
> -  }
> -
> -  return FALSE;
> -}
> -
> -/**
> -  Notify function for the ICMP receive token, used to process
> -  the received ICMP packets.
> -
> -  @param  Context               The PXEBC private data.
> -
> -**/
> -VOID
> -EFIAPI
> -IcmpErrorListenHandlerDpc (
> -  IN VOID      *Context
> -  )
> -{
> -  EFI_STATUS              Status;
> -  EFI_IP4_RECEIVE_DATA    *RxData;
> -  EFI_IP4_PROTOCOL        *Ip4;
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  UINTN                   Index;
> -  UINT32                  CopiedLen;
> -  UINT8                   *CopiedPointer;
> -
> -  Private = (PXEBC_PRIVATE_DATA *) Context;
> -  Mode    = &Private->Mode;
> -  Status  = Private->IcmpErrorRcvToken.Status;
> -  RxData  = Private->IcmpErrorRcvToken.Packet.RxData;
> -  Ip4     = Private->Ip4;
> -
> -  if (Status == EFI_ABORTED) {
> -    //
> -    // The reception is actively aborted by the consumer, directly return.
> -    //
> -    return;
> -  }
> -
> -  if (RxData == NULL) {
> -    goto Resume;
> -  }
> -
> -  if (Status != EFI_ICMP_ERROR) {
> -    //
> -    // The return status should be recognized as EFI_ICMP_ERROR.
> -    //
> -    goto CleanUp;
> -  }
> -
> -  if (EFI_IP4 (RxData->Header->SourceAddress) != 0 &&
> -      (NTOHL (Mode->SubnetMask.Addr[0]) != 0) &&
> -      IP4_NET_EQUAL (NTOHL(Mode->StationIp.Addr[0]), EFI_NTOHL (RxData-
> >Header->SourceAddress), NTOHL (Mode->SubnetMask.Addr[0])) &&
> -      !NetIp4IsUnicast (EFI_NTOHL (RxData->Header->SourceAddress), NTOHL
> (Mode->SubnetMask.Addr[0]))) {
> -    //
> -    // The source address is not zero and it's not a unicast IP address, discard it.
> -    //
> -    goto CleanUp;
> -  }
> -
> -  if (!EFI_IP4_EQUAL (&RxData->Header->DestinationAddress, &Mode-
> >StationIp.v4)) {
> -    //
> -    // The dest address is not equal to Station Ip address, discard it.
> -    //
> -    goto CleanUp;
> -  }
> -
> -  //
> -  // Constructor ICMP error packet
> -  //
> -  CopiedLen = 0;
> -  CopiedPointer = (UINT8 *) &Mode->IcmpError;
> -
> -  for (Index = 0; Index < RxData->FragmentCount; Index ++) {
> -    CopiedLen += RxData->FragmentTable[Index].FragmentLength;
> -    if (CopiedLen <= sizeof (EFI_PXE_BASE_CODE_ICMP_ERROR)) {
> -      CopyMem (
> -        CopiedPointer,
> -        RxData->FragmentTable[Index].FragmentBuffer,
> -        RxData->FragmentTable[Index].FragmentLength
> -        );
> -    } else {
> -      CopyMem (
> -        CopiedPointer,
> -        RxData->FragmentTable[Index].FragmentBuffer,
> -        CopiedLen - sizeof (EFI_PXE_BASE_CODE_ICMP_ERROR)
> -        );
> -    }
> -    CopiedPointer += CopiedLen;
> -  }
> -
> -CleanUp:
> -  gBS->SignalEvent (RxData->RecycleSignal);
> -
> -Resume:
> -  Ip4->Receive (Ip4, &(Private->IcmpErrorRcvToken));
> -}
> -
> -/**
> -  Request IcmpErrorListenHandlerDpc as a DPC at TPL_CALLBACK
> -
> -  @param  Event                 The event signaled.
> -  @param  Context               The context passed in by the event notifier.
> -
> -**/
> -VOID
> -EFIAPI
> -IcmpErrorListenHandler (
> -  IN EFI_EVENT Event,
> -  IN VOID      *Context
> -  )
> -{
> -  //
> -  // Request IpIoListenHandlerDpc as a DPC at TPL_CALLBACK
> -  //
> -  QueueDpc (TPL_CALLBACK, IcmpErrorListenHandlerDpc, Context);
> -}
> -
> -/**
> -  Enables the use of the PXE Base Code Protocol functions.
> -
> -  This function enables the use of the PXE Base Code Protocol functions. If the
> -  Started field of the EFI_PXE_BASE_CODE_MODE structure is already TRUE,
> then
> -  EFI_ALREADY_STARTED will be returned. If UseIpv6 is TRUE, then IPv6
> formatted
> -  addresses will be used in this session. If UseIpv6 is FALSE, then IPv4 formatted
> -  addresses will be used in this session. If UseIpv6 is TRUE, and the
> Ipv6Supported
> -  field of the EFI_PXE_BASE_CODE_MODE structure is FALSE, then
> EFI_UNSUPPORTED will
> -  be returned. If there is not enough memory or other resources to start the PXE
> -  Base Code Protocol, then EFI_OUT_OF_RESOURCES will be returned.
> Otherwise, the
> -  PXE Base Code Protocol will be started, and all of the fields of the
> EFI_PXE_BASE_CODE_MODE
> -  structure will be initialized as follows:
> -    StartedSet to TRUE.
> -    Ipv6SupportedUnchanged.
> -    Ipv6AvailableUnchanged.
> -    UsingIpv6Set to UseIpv6.
> -    BisSupportedUnchanged.
> -    BisDetectedUnchanged.
> -    AutoArpSet to TRUE.
> -    SendGUIDSet to FALSE.
> -    TTLSet to DEFAULT_TTL.
> -    ToSSet to DEFAULT_ToS.
> -    DhcpCompletedSet to FALSE.
> -    ProxyOfferReceivedSet to FALSE.
> -    StationIpSet to an address of all zeros.
> -    SubnetMaskSet to a subnet mask of all zeros.
> -    DhcpDiscoverZero-filled.
> -    DhcpAckZero-filled.
> -    ProxyOfferZero-filled.
> -    PxeDiscoverValidSet to FALSE.
> -    PxeDiscoverZero-filled.
> -    PxeReplyValidSet to FALSE.
> -    PxeReplyZero-filled.
> -    PxeBisReplyValidSet to FALSE.
> -    PxeBisReplyZero-filled.
> -    IpFilterSet the Filters field to 0 and the IpCnt field to 0.
> -    ArpCacheEntriesSet to 0.
> -    ArpCacheZero-filled.
> -    RouteTableEntriesSet to 0.
> -    RouteTableZero-filled.
> -    IcmpErrorReceivedSet to FALSE.
> -    IcmpErrorZero-filled.
> -    TftpErroReceivedSet to FALSE.
> -    TftpErrorZero-filled.
> -    MakeCallbacksSet to TRUE if the PXE Base Code Callback Protocol is available.
> -    Set to FALSE if the PXE Base Code Callback Protocol is not available.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  UseIpv6               Specifies the type of IP addresses that are to be used
> during the session
> -                                that is being started. Set to TRUE for IPv6 addresses, and
> FALSE for
> -                                IPv4 addresses.
> -
> -  @retval EFI_SUCCESS           The PXE Base Code Protocol was started.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this oper
> -  @retval EFI_UNSUPPORTED       UseIpv6 is TRUE, but the Ipv6Supported field
> of the
> -                                EFI_PXE_BASE_CODE_MODE structure is FALSE.
> -  @retval EFI_ALREADY_STARTED   The PXE Base Code Protocol is already in the
> started state.
> -  @retval EFI_INVALID_PARAMETER The This parameter is NULL or does not
> point to a valid
> -                                EFI_PXE_BASE_CODE_PROTOCOL structure.
> -  @retval EFI_OUT_OF_RESOURCES  Could not allocate enough memory or
> other resources to start the
> -                                PXE Base Code Protocol.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcStart (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN BOOLEAN                          UseIpv6
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_STATUS              Status;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (Mode->Started) {
> -    return EFI_ALREADY_STARTED;
> -  }
> -
> -  if (UseIpv6) {
> -    //
> -    // IPv6 is not supported now.
> -    //
> -    return EFI_UNSUPPORTED;
> -  }
> -
> -  AsciiPrint ("\n>>Start PXE over IPv4");
> -
> -  //
> -  // Configure the udp4 instance to let it receive data
> -  //
> -  Status = Private->Udp4Read->Configure (
> -                               Private->Udp4Read,
> -                               &Private->Udp4CfgData
> -                               );
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -
> -  //
> -  // Configure block size for TFTP as a default value to handle all link layers.
> -  //
> -  Private->BlockSize   = MIN (Private->Ip4MaxPacketSize,
> PXEBC_DEFAULT_PACKET_SIZE) -
> -                           PXEBC_DEFAULT_UDP_OVERHEAD_SIZE -
> PXEBC_DEFAULT_TFTP_OVERHEAD_SIZE;
> -  //
> -  // If PcdTftpBlockSize is set to non-zero, override the default value.
> -  //
> -  if (PcdGet64 (PcdTftpBlockSize) != 0) {
> -    Private->BlockSize   = (UINTN) PcdGet64 (PcdTftpBlockSize);
> -  }
> -
> -  Private->AddressIsOk = FALSE;
> -
> -  ZeroMem (Mode, sizeof (EFI_PXE_BASE_CODE_MODE));
> -
> -  Mode->Started = TRUE;
> -  Mode->TTL     = DEFAULT_TTL;
> -  Mode->ToS     = DEFAULT_ToS;
> -  Mode->AutoArp = TRUE;
> -
> -  //
> -  // Create the event for Arp Cache checking.
> -  //
> -  Status = gBS->CreateEvent (
> -                  EVT_TIMER | EVT_NOTIFY_SIGNAL,
> -                  TPL_CALLBACK,
> -                  ArpCacheUpdateTimeout,
> -                  This,
> -                  &Private->GetArpCacheEvent
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  //
> -  // Start the timeout timer event.
> -  //
> -  Status = gBS->SetTimer (
> -                  Private->GetArpCacheEvent,
> -                  TimerPeriodic,
> -                  TICKS_PER_SECOND
> -                  );
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  //
> -  // Create ICMP error receiving event
> -  //
> -  Status = gBS->CreateEvent (
> -                  EVT_NOTIFY_SIGNAL,
> -                  TPL_NOTIFY,
> -                  IcmpErrorListenHandler,
> -                  Private,
> -                  &(Private->IcmpErrorRcvToken.Event)
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  //
> -  //DHCP4 service allows only one of its children to be configured in
> -  //the active state, If the DHCP4 D.O.R.A started by IP4 auto
> -  //configuration and has not been completed, the Dhcp4 state machine
> -  //will not be in the right state for the PXE to start a new round D.O.R.A.
> -  //so we need to switch it's policy to static.
> -  //
> -  Status = PxeBcSetIp4Policy (Private);
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  Status = Private->Ip4->Configure (Private->Ip4, &Private->Ip4ConfigData);
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  //
> -  // start to listen incoming packet
> -  //
> -  Status = Private->Ip4->Receive (Private->Ip4, &Private->IcmpErrorRcvToken);
> -  if (!EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -ON_EXIT:
> -  Private->Ip4->Configure (Private->Ip4, NULL);
> -
> -  if (Private->IcmpErrorRcvToken.Event != NULL) {
> -    gBS->CloseEvent (Private->IcmpErrorRcvToken.Event);
> -  }
> -
> -  if (Private->GetArpCacheEvent != NULL) {
> -    gBS->SetTimer (Private->GetArpCacheEvent, TimerCancel, 0);
> -    gBS->CloseEvent (Private->GetArpCacheEvent);
> -  }
> -
> -  Mode->Started = FALSE;
> -  Mode->TTL     = 0;
> -  Mode->ToS     = 0;
> -  Mode->AutoArp = FALSE;
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Disables the use of the PXE Base Code Protocol functions.
> -
> -  This function stops all activity on the network device. All the resources
> allocated
> -  in Start() are released, the Started field of the EFI_PXE_BASE_CODE_MODE
> structure is
> -  set to FALSE and EFI_SUCCESS is returned. If the Started field of the
> EFI_PXE_BASE_CODE_MODE
> -  structure is already FALSE, then EFI_NOT_STARTED will be returned.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -
> -  @retval EFI_SUCCESS           The PXE Base Code Protocol was stopped.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is already in the
> stopped state.
> -  @retval EFI_INVALID_PARAMETER The This parameter is NULL or does not
> point to a valid
> -                                EFI_PXE_BASE_CODE_PROTOCOL structure.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcStop (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  Private->Ip4->Cancel (Private->Ip4, NULL);
> -  //
> -  // Dispatch the DPCs queued by the NotifyFunction of the canceled rx token's
> -  // events.
> -  //
> -  DispatchDpc ();
> -
> -  Private->Ip4->Configure (Private->Ip4, NULL);
> -
> -  //
> -  // Close the ICMP error receiving event.
> -  //
> -  gBS->CloseEvent (Private->IcmpErrorRcvToken.Event);
> -
> -  //
> -  // Cancel the TimeoutEvent timer.
> -  //
> -  gBS->SetTimer (Private->GetArpCacheEvent, TimerCancel, 0);
> -
> -  //
> -  // Close the TimeoutEvent event.
> -  //
> -  gBS->CloseEvent (Private->GetArpCacheEvent);
> -
> -  Mode->Started = FALSE;
> -
> -  Private->CurrentUdpSrcPort = 0;
> -  Private->Udp4Write->Configure (Private->Udp4Write, NULL);
> -  Private->Udp4Read->Groups (Private->Udp4Read, FALSE, NULL);
> -  Private->Udp4Read->Configure (Private->Udp4Read, NULL);
> -
> -  Private->Dhcp4->Stop (Private->Dhcp4);
> -  Private->Dhcp4->Configure (Private->Dhcp4, NULL);
> -
> -  Private->FileSize = 0;
> -
> -  return EFI_SUCCESS;
> -}
> -
> -
> -/**
> -  Attempts to complete a DHCPv4 D.O.R.A. (discover / offer / request /
> acknowledge) or DHCPv6
> -  S.A.R.R (solicit / advertise / request / reply) sequence.
> -
> -  This function attempts to complete the DHCP sequence. If this sequence is
> completed,
> -  then EFI_SUCCESS is returned, and the DhcpCompleted, ProxyOfferReceived,
> StationIp,
> -  SubnetMask, DhcpDiscover, DhcpAck, and ProxyOffer fields of the
> EFI_PXE_BASE_CODE_MODE
> -  structure are filled in.
> -  If SortOffers is TRUE, then the cached DHCP offer packets will be sorted
> before
> -  they are tried. If SortOffers is FALSE, then the cached DHCP offer packets will
> -  be tried in the order in which they are received. Please see the Preboot
> Execution
> -  Environment (PXE) Specification for additional details on the implementation
> of DHCP.
> -  This function can take at least 31 seconds to timeout and return control to the
> -  caller. If the DHCP sequence does not complete, then EFI_TIMEOUT will be
> returned.
> -  If the Callback Protocol does not return
> EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE,
> -  then the DHCP sequence will be stopped and EFI_ABORTED will be returned.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  SortOffers            TRUE if the offers received should be sorted. Set to
> FALSE to try the
> -                                offers in the order that they are received.
> -
> -  @retval EFI_SUCCESS           Valid DHCP has completed.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER The This parameter is NULL or does not
> point to a valid
> -                                EFI_PXE_BASE_CODE_PROTOCOL structure.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -  @retval EFI_OUT_OF_RESOURCES  Could not allocate enough memory to
> complete the DHCP Protocol.
> -  @retval EFI_ABORTED           The callback function aborted the DHCP Protocol.
> -  @retval EFI_TIMEOUT           The DHCP Protocol timed out.
> -  @retval EFI_ICMP_ERROR        An ICMP error packet was received during the
> DHCP session.
> -  @retval EFI_NO_RESPONSE       Valid PXE offer was not received.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcDhcp (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN BOOLEAN                          SortOffers
> -  )
> -{
> -  PXEBC_PRIVATE_DATA           *Private;
> -  EFI_PXE_BASE_CODE_MODE       *Mode;
> -  EFI_DHCP4_PROTOCOL           *Dhcp4;
> -  EFI_DHCP4_CONFIG_DATA        Dhcp4CfgData;
> -  EFI_DHCP4_MODE_DATA          Dhcp4Mode;
> -  EFI_DHCP4_PACKET_OPTION
> *OptList[PXEBC_DHCP4_MAX_OPTION_NUM];
> -  UINT32                       OptCount;
> -  EFI_STATUS                   Status;
> -  EFI_ARP_CONFIG_DATA          ArpConfigData;
> -  EFI_PXE_BASE_CODE_IP_FILTER  IpFilter;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Status              = EFI_SUCCESS;
> -  Private             = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode                = Private->PxeBc.Mode;
> -  Dhcp4               = Private->Dhcp4;
> -  Private->Function   = EFI_PXE_BASE_CODE_FUNCTION_DHCP;
> -  Private->SortOffers = SortOffers;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  //
> -  // Stop Udp4Read instance
> -  //
> -  Private->Udp4Read->Configure (Private->Udp4Read, NULL);
> -
> -  //
> -  // Initialize the DHCP options and build the option list
> -  //
> -  OptCount = PxeBcBuildDhcpOptions (Private, OptList, TRUE);
> -
> -  //
> -  // Set the DHCP4 config data.
> -  // The four discovery timeouts are 4, 8, 16, 32 seconds respectively.
> -  //
> -  ZeroMem (&Dhcp4CfgData, sizeof (EFI_DHCP4_CONFIG_DATA));
> -  Dhcp4CfgData.OptionCount      = OptCount;
> -  Dhcp4CfgData.OptionList       = OptList;
> -  Dhcp4CfgData.Dhcp4Callback    = PxeBcDhcpCallBack;
> -  Dhcp4CfgData.CallbackContext  = Private;
> -  Dhcp4CfgData.DiscoverTryCount = 4;
> -  Dhcp4CfgData.DiscoverTimeout  = mPxeDhcpTimeout;
> -
> -  Status          = Dhcp4->Configure (Dhcp4, &Dhcp4CfgData);
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  //
> -  // Zero those arrays to record the varies numbers of DHCP OFFERS.
> -  //
> -  Private->GotProxyOffer = FALSE;
> -  Private->NumOffers     = 0;
> -  Private->BootpIndex    = 0;
> -  ZeroMem (Private->ServerCount, sizeof (Private->ServerCount));
> -  ZeroMem (Private->ProxyIndex, sizeof (Private->ProxyIndex));
> -
> -  Status = Dhcp4->Start (Dhcp4, NULL);
> -  if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
> -    if (Status == EFI_ICMP_ERROR) {
> -      Mode->IcmpErrorReceived = TRUE;
> -    }
> -    goto ON_EXIT;
> -  }
> -
> -  Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4Mode);
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  ASSERT (Dhcp4Mode.State == Dhcp4Bound);
> -
> -  CopyMem (&Private->StationIp, &Dhcp4Mode.ClientAddress, sizeof
> (EFI_IPv4_ADDRESS));
> -  CopyMem (&Private->SubnetMask, &Dhcp4Mode.SubnetMask, sizeof
> (EFI_IPv4_ADDRESS));
> -  CopyMem (&Private->GatewayIp, &Dhcp4Mode.RouterAddress, sizeof
> (EFI_IPv4_ADDRESS));
> -
> -  CopyMem (&Mode->StationIp, &Private->StationIp, sizeof
> (EFI_IPv4_ADDRESS));
> -  CopyMem (&Mode->SubnetMask, &Private->SubnetMask, sizeof
> (EFI_IPv4_ADDRESS));
> -
> -  //
> -  // Check the selected offer to see whether BINL is required, if no or BINL is
> -  // finished, set the various Mode members.
> -  //
> -  Status = PxeBcCheckSelectedOffer (Private);
> -
> -  AsciiPrint ("\n  Station IP address is ");
> -
> -  PxeBcShowIp4Addr (&Private->StationIp.v4);
> -  AsciiPrint ("\n");
> -
> -ON_EXIT:
> -  if (EFI_ERROR (Status)) {
> -    Dhcp4->Stop (Dhcp4);
> -    Dhcp4->Configure (Dhcp4, NULL);
> -  } else {
> -    //
> -    // Remove the previously configured option list and callback function
> -    //
> -    ZeroMem (&Dhcp4CfgData, sizeof (EFI_DHCP4_CONFIG_DATA));
> -    Dhcp4->Configure (Dhcp4, &Dhcp4CfgData);
> -
> -    Private->AddressIsOk = TRUE;
> -
> -    if (!Mode->UsingIpv6) {
> -      //
> -      // If in IPv4 mode, configure the corresponding ARP with this new
> -      // station IP address.
> -      //
> -      ZeroMem (&ArpConfigData, sizeof (EFI_ARP_CONFIG_DATA));
> -
> -      ArpConfigData.SwAddressType   = 0x0800;
> -      ArpConfigData.SwAddressLength = (UINT8) sizeof (EFI_IPv4_ADDRESS);
> -      ArpConfigData.StationAddress  = &Private->StationIp.v4;
> -
> -      Private->Arp->Configure (Private->Arp, NULL);
> -      Private->Arp->Configure (Private->Arp, &ArpConfigData);
> -
> -      //
> -      // Updated the route table. Fill the first entry.
> -      //
> -      Mode->RouteTableEntries                = 1;
> -      Mode->RouteTable[0].IpAddr.Addr[0]     = Private->StationIp.Addr[0] &
> Private->SubnetMask.Addr[0];
> -      Mode->RouteTable[0].SubnetMask.Addr[0] = Private->SubnetMask.Addr[0];
> -      Mode->RouteTable[0].GwAddr.Addr[0]     = 0;
> -
> -      //
> -      // Create the default route entry if there is a default router.
> -      //
> -      if (Private->GatewayIp.Addr[0] != 0) {
> -        Mode->RouteTableEntries                = 2;
> -        Mode->RouteTable[1].IpAddr.Addr[0]     = 0;
> -        Mode->RouteTable[1].SubnetMask.Addr[0] = 0;
> -        Mode->RouteTable[1].GwAddr.Addr[0]     = Private->GatewayIp.Addr[0];
> -      }
> -
> -      //
> -      // Flush new station IP address into Udp4CfgData and Ip4ConfigData
> -      //
> -      CopyMem (&Private->Udp4CfgData.StationAddress, &Private->StationIp,
> sizeof (EFI_IPv4_ADDRESS));
> -      CopyMem (&Private->Udp4CfgData.SubnetMask, &Private->SubnetMask,
> sizeof (EFI_IPv4_ADDRESS));
> -      CopyMem (&Private->Ip4ConfigData.StationAddress, &Private->StationIp,
> sizeof (EFI_IPv4_ADDRESS));
> -      CopyMem (&Private->Ip4ConfigData.SubnetMask, &Private->SubnetMask,
> sizeof (EFI_IPv4_ADDRESS));
> -
> -      //
> -      // Reconfigure the Ip4 instance to capture background ICMP packets with
> new station Ip address.
> -      //
> -      Private->Ip4->Cancel (Private->Ip4, &Private->IcmpErrorRcvToken);
> -      Private->Ip4->Configure (Private->Ip4, NULL);
> -
> -      Status = Private->Ip4->Configure (Private->Ip4, &Private->Ip4ConfigData);
> -      if (EFI_ERROR (Status)) {
> -        goto ON_EXIT;
> -      }
> -
> -      Status = Private->Ip4->Receive (Private->Ip4, &Private->IcmpErrorRcvToken);
> -      if (EFI_ERROR (Status)) {
> -        goto ON_EXIT;
> -      }
> -    }
> -  }
> -
> -  Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);
> -
> -  //
> -  // Dhcp(), Discover(), and Mtftp() set the IP filter, and return with the IP
> -  // receive filter list emptied and the filter set to
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP.
> -  //
> -  ZeroMem(&IpFilter, sizeof (EFI_PXE_BASE_CODE_IP_FILTER));
> -  IpFilter.Filters = EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP;
> -  This->SetIpFilter (This, &IpFilter);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Attempts to complete the PXE Boot Server and/or boot image discovery
> sequence.
> -
> -  This function attempts to complete the PXE Boot Server and/or boot image
> discovery
> -  sequence. If this sequence is completed, then EFI_SUCCESS is returned, and
> the
> -  PxeDiscoverValid, PxeDiscover, PxeReplyReceived, and PxeReply fields of the
> -  EFI_PXE_BASE_CODE_MODE structure are filled in. If UseBis is TRUE, then the
> -  PxeBisReplyReceived and PxeBisReply fields of the
> EFI_PXE_BASE_CODE_MODE structure
> -  will also be filled in. If UseBis is FALSE, then PxeBisReplyValid will be set to
> FALSE.
> -  In the structure referenced by parameter Info, the PXE Boot Server list,
> SrvList[],
> -  has two uses: It is the Boot Server IP address list used for unicast discovery
> -  (if the UseUCast field is TRUE), and it is the list used for Boot Server
> verification
> -  (if the MustUseList field is TRUE). Also, if the MustUseList field in that
> structure
> -  is TRUE and the AcceptAnyResponse field in the SrvList[] array is TRUE, any
> Boot
> -  Server reply of that type will be accepted. If the AcceptAnyResponse field is
> -  FALSE, only responses from Boot Servers with matching IP addresses will be
> accepted.
> -  This function can take at least 10 seconds to timeout and return control to the
> -  caller. If the Discovery sequence does not complete, then EFI_TIMEOUT will
> be
> -  returned. Please see the Preboot Execution Environment (PXE) Specification
> for
> -  additional details on the implementation of the Discovery sequence.
> -  If the Callback Protocol does not return
> EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE,
> -  then the Discovery sequence is stopped and EFI_ABORTED will be returned.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  Type                  The type of bootstrap to perform.
> -  @param  Layer                 Pointer to the boot server layer number to discover,
> which must be
> -                                PXE_BOOT_LAYER_INITIAL when a new server type is being
> -                                discovered.
> -  @param  UseBis                TRUE if Boot Integrity Services are to be used. FALSE
> otherwise.
> -  @param  Info                  Pointer to a data structure that contains additional
> information on the
> -                                type of discovery operation that is to be performed.
> -
> -  @retval EFI_SUCCESS           The Discovery sequence has been completed.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -  @retval EFI_OUT_OF_RESOURCES  Could not allocate enough memory to
> complete Discovery.
> -  @retval EFI_ABORTED           The callback function aborted the Discovery
> sequence.
> -  @retval EFI_TIMEOUT           The Discovery sequence timed out.
> -  @retval EFI_ICMP_ERROR        An ICMP error packet was received during the
> PXE discovery
> -                                session.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcDiscover (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN UINT16                           Type,
> -  IN UINT16                           *Layer,
> -  IN BOOLEAN                          UseBis,
> -  IN EFI_PXE_BASE_CODE_DISCOVER_INFO  *Info   OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA              *Private;
> -  EFI_PXE_BASE_CODE_MODE          *Mode;
> -  EFI_PXE_BASE_CODE_DISCOVER_INFO DefaultInfo;
> -  EFI_PXE_BASE_CODE_DISCOVER_INFO *CreatedInfo;
> -  EFI_PXE_BASE_CODE_SRVLIST       *SrvList;
> -  EFI_PXE_BASE_CODE_SRVLIST       DefaultSrvList;
> -  PXEBC_CACHED_DHCP4_PACKET       *Packet;
> -  PXEBC_VENDOR_OPTION             *VendorOpt;
> -  UINT16                          Index;
> -  EFI_STATUS                      Status;
> -  PXEBC_BOOT_SVR_ENTRY            *BootSvrEntry;
> -  EFI_PXE_BASE_CODE_IP_FILTER     IpFilter;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private           = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode              = Private->PxeBc.Mode;
> -  BootSvrEntry      = NULL;
> -  SrvList           = NULL;
> -  CreatedInfo       = NULL;
> -  Status            = EFI_DEVICE_ERROR;
> -  Private->Function = EFI_PXE_BASE_CODE_FUNCTION_DISCOVER;
> -
> -  if (!Private->AddressIsOk) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  //
> -  // Stop Udp4Read instance
> -  //
> -  Private->Udp4Read->Configure (Private->Udp4Read, NULL);
> -
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  //
> -  // If layer isn't EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL,
> -  //   use the previous setting;
> -  // If info isn't offered,
> -  //   use the cached DhcpAck and ProxyOffer packets.
> -  //
> -  ZeroMem (&DefaultInfo, sizeof (EFI_PXE_BASE_CODE_DISCOVER_INFO));
> -  if (*Layer != EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL) {
> -
> -    if (!Mode->PxeDiscoverValid || !Mode->PxeReplyReceived || (!Mode-
> >PxeBisReplyReceived && UseBis)) {
> -
> -      Status = EFI_INVALID_PARAMETER;
> -      goto ON_EXIT;
> -    }
> -
> -    DefaultInfo.IpCnt                 = 1;
> -    DefaultInfo.UseUCast              = TRUE;
> -
> -    DefaultSrvList.Type               = Type;
> -    DefaultSrvList.AcceptAnyResponse  = FALSE;
> -    DefaultSrvList.IpAddr.Addr[0]     = Private->ServerIp.Addr[0];
> -
> -    SrvList = &DefaultSrvList;
> -    Info = &DefaultInfo;
> -  } else if (Info == NULL) {
> -    //
> -    // Create info by the cached packet before
> -    //
> -    Packet    = (Mode->ProxyOfferReceived) ? &Private->ProxyOffer : &Private-
> >Dhcp4Ack;
> -    VendorOpt = &Packet->PxeVendorOption;
> -
> -    if (!Mode->DhcpAckReceived || !IS_VALID_DISCOVER_VENDOR_OPTION
> (VendorOpt->BitMap)) {
> -      //
> -      // Address is not acquired or no discovery options.
> -      //
> -      Status = EFI_INVALID_PARAMETER;
> -      goto ON_EXIT;
> -    }
> -
> -    DefaultInfo.UseMCast    = (BOOLEAN)!IS_DISABLE_MCAST_DISCOVER
> (VendorOpt->DiscoverCtrl);
> -    DefaultInfo.UseBCast    = (BOOLEAN)!IS_DISABLE_BCAST_DISCOVER
> (VendorOpt->DiscoverCtrl);
> -    DefaultInfo.MustUseList = (BOOLEAN) IS_ENABLE_USE_SERVER_LIST
> (VendorOpt->DiscoverCtrl);
> -    DefaultInfo.UseUCast    = DefaultInfo.MustUseList;
> -
> -    if (DefaultInfo.UseMCast) {
> -      //
> -      // Get the multicast discover ip address from vendor option.
> -      //
> -      CopyMem (
> -        &DefaultInfo.ServerMCastIp.Addr,
> -        &VendorOpt->DiscoverMcastIp,
> -        sizeof (EFI_IPv4_ADDRESS)
> -        );
> -    }
> -
> -    DefaultInfo.IpCnt = 0;
> -    Info    = &DefaultInfo;
> -    SrvList = Info->SrvList;
> -
> -    if (DefaultInfo.MustUseList) {
> -      BootSvrEntry  = VendorOpt->BootSvr;
> -      Status        = EFI_INVALID_PARAMETER;
> -
> -      while (((UINT8) (BootSvrEntry - VendorOpt->BootSvr)) < VendorOpt-
> >BootSvrLen) {
> -
> -        if (BootSvrEntry->Type == HTONS (Type)) {
> -          Status = EFI_SUCCESS;
> -          break;
> -        }
> -
> -        BootSvrEntry = GET_NEXT_BOOT_SVR_ENTRY (BootSvrEntry);
> -      }
> -
> -      if (EFI_ERROR (Status)) {
> -        goto ON_EXIT;
> -      }
> -
> -      DefaultInfo.IpCnt = BootSvrEntry->IpCnt;
> -
> -      if (DefaultInfo.IpCnt >= 1) {
> -        CreatedInfo = AllocatePool (sizeof (DefaultInfo) + (DefaultInfo.IpCnt - 1) *
> sizeof (*SrvList));
> -        if (CreatedInfo == NULL) {
> -          Status = EFI_OUT_OF_RESOURCES;
> -          goto ON_EXIT;
> -
> -        }
> -
> -        CopyMem (CreatedInfo, &DefaultInfo, sizeof (DefaultInfo));
> -        Info    = CreatedInfo;
> -        SrvList = Info->SrvList;
> -      }
> -
> -      for (Index = 0; Index < DefaultInfo.IpCnt; Index++) {
> -        CopyMem (&SrvList[Index].IpAddr, &BootSvrEntry->IpAddr[Index], sizeof
> (EFI_IPv4_ADDRESS));
> -        SrvList[Index].AcceptAnyResponse   = FALSE;
> -        SrvList[Index].Type                = BootSvrEntry->Type;
> -      }
> -    }
> -
> -  } else {
> -
> -    SrvList = Info->SrvList;
> -
> -    if (!SrvList[0].AcceptAnyResponse) {
> -
> -      for (Index = 1; Index < Info->IpCnt; Index++) {
> -        if (SrvList[Index].AcceptAnyResponse) {
> -          break;
> -        }
> -      }
> -
> -      if (Index != Info->IpCnt) {
> -        Status = EFI_INVALID_PARAMETER;
> -        goto ON_EXIT;
> -      }
> -    }
> -  }
> -
> -  if ((!Info->UseUCast && !Info->UseBCast && !Info->UseMCast) || (Info-
> >MustUseList && Info->IpCnt == 0)) {
> -
> -    Status = EFI_INVALID_PARAMETER;
> -    goto ON_EXIT;
> -  }
> -  //
> -  // Execute discover by UniCast/BroadCast/MultiCast
> -  //
> -  if (Info->UseUCast) {
> -
> -    for (Index = 0; Index < Info->IpCnt; Index++) {
> -
> -      if (BootSvrEntry == NULL) {
> -        Private->ServerIp.Addr[0] = SrvList[Index].IpAddr.Addr[0];
> -      } else {
> -        CopyMem (
> -          &Private->ServerIp,
> -          &BootSvrEntry->IpAddr[Index],
> -          sizeof (EFI_IPv4_ADDRESS)
> -          );
> -      }
> -
> -      Status = PxeBcDiscvBootService (
> -                Private,
> -                Type,
> -                Layer,
> -                UseBis,
> -                &SrvList[Index].IpAddr,
> -                0,
> -                NULL,
> -                TRUE,
> -                &Private->PxeReply.Packet.Ack
> -                );
> -      if (!EFI_ERROR (Status)) {
> -        break;
> -      }
> -    }
> -
> -  } else if (Info->UseMCast) {
> -
> -    Status = PxeBcDiscvBootService (
> -              Private,
> -              Type,
> -              Layer,
> -              UseBis,
> -              &Info->ServerMCastIp,
> -              0,
> -              NULL,
> -              TRUE,
> -              &Private->PxeReply.Packet.Ack
> -              );
> -
> -  } else if (Info->UseBCast) {
> -
> -    Status = PxeBcDiscvBootService (
> -              Private,
> -              Type,
> -              Layer,
> -              UseBis,
> -              NULL,
> -              Info->IpCnt,
> -              SrvList,
> -              TRUE,
> -              &Private->PxeReply.Packet.Ack
> -              );
> -  }
> -
> -  if (EFI_ERROR (Status) || !Mode->PxeReplyReceived || (!Mode-
> >PxeBisReplyReceived && UseBis)) {
> -    if (Status == EFI_ICMP_ERROR) {
> -      Mode->IcmpErrorReceived = TRUE;
> -    } else {
> -      Status = EFI_DEVICE_ERROR;
> -    }
> -    goto ON_EXIT;
> -  } else {
> -    PxeBcParseCachedDhcpPacket (&Private->PxeReply);
> -  }
> -
> -  if (Mode->PxeBisReplyReceived) {
> -    CopyMem (
> -      &Private->ServerIp,
> -      &Mode->PxeReply.Dhcpv4.BootpSiAddr,
> -      sizeof (EFI_IPv4_ADDRESS)
> -      );
> -  }
> -
> -  if (CreatedInfo != NULL) {
> -    FreePool (CreatedInfo);
> -  }
> -
> -ON_EXIT:
> -
> -  Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);
> -
> -  //
> -  // Dhcp(), Discover(), and Mtftp() set the IP filter, and return with the IP
> -  // receive filter list emptied and the filter set to
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP.
> -  //
> -  ZeroMem(&IpFilter, sizeof (EFI_PXE_BASE_CODE_IP_FILTER));
> -  IpFilter.Filters = EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP;
> -  This->SetIpFilter (This, &IpFilter);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Used to perform TFTP and MTFTP services.
> -
> -  This function is used to perform TFTP and MTFTP services. This includes the
> -  TFTP operations to get the size of a file, read a directory, read a file, and
> -  write a file. It also includes the MTFTP operations to get the size of a file,
> -  read a directory, and read a file. The type of operation is specified by
> Operation.
> -  If the callback function that is invoked during the TFTP/MTFTP operation does
> -  not return EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE, then
> EFI_ABORTED will
> -  be returned.
> -  For read operations, the return data will be placed in the buffer specified by
> -  BufferPtr. If BufferSize is too small to contain the entire downloaded file,
> -  then EFI_BUFFER_TOO_SMALL will be returned and BufferSize will be set to
> zero
> -  or the size of the requested file (the size of the requested file is only returned
> -  if the TFTP server supports TFTP options). If BufferSize is large enough for the
> -  read operation, then BufferSize will be set to the size of the downloaded file,
> -  and EFI_SUCCESS will be returned. Applications using the PxeBc.Mtftp()
> services
> -  should use the get-file-size operations to determine the size of the
> downloaded
> -  file prior to using the read-file operations-especially when downloading large
> -  (greater than 64 MB) files-instead of making two calls to the read-file
> operation.
> -  Following this recommendation will save time if the file is larger than expected
> -  and the TFTP server does not support TFTP option extensions. Without TFTP
> option
> -  extension support, the client has to download the entire file, counting and
> discarding
> -  the received packets, to determine the file size.
> -  For write operations, the data to be sent is in the buffer specified by BufferPtr.
> -  BufferSize specifies the number of bytes to send. If the write operation
> completes
> -  successfully, then EFI_SUCCESS will be returned.
> -  For TFTP "get file size" operations, the size of the requested file or directory
> -  is returned in BufferSize, and EFI_SUCCESS will be returned. If the TFTP server
> -  does not support options, the file will be downloaded into a bit bucket and the
> -  length of the downloaded file will be returned. For MTFTP "get file size"
> operations,
> -  if the MTFTP server does not support the "get file size" option,
> EFI_UNSUPPORTED
> -  will be returned.
> -  This function can take up to 10 seconds to timeout and return control to the
> caller.
> -  If the TFTP sequence does not complete, EFI_TIMEOUT will be returned.
> -  If the Callback Protocol does not return
> EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE,
> -  then the TFTP sequence is stopped and EFI_ABORTED will be returned.
> -  The format of the data returned from a TFTP read directory operation is a null-
> terminated
> -  filename followed by a null-terminated information string, of the form
> -  "size year-month-day hour:minute:second" (i.e. %d %d-%d-%d %d:%d:%f -
> note that
> -  the seconds field can be a decimal number), where the date and time are UTC.
> For
> -  an MTFTP read directory command, there is additionally a null-terminated
> multicast
> -  IP address preceding the filename of the form %d.%d.%d.%d for IP v4. The
> final
> -  entry is itself null-terminated, so that the final information string is terminated
> -  with two null octets.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  Operation             The type of operation to perform.
> -  @param  BufferPtr             A pointer to the data buffer.
> -  @param  Overwrite             Only used on write file operations. TRUE if a file on
> a remote server can
> -                                be overwritten.
> -  @param  BufferSize            For get-file-size operations, *BufferSize returns the
> size of the
> -                                requested file.
> -  @param  BlockSize             The requested block size to be used during a TFTP
> transfer.
> -  @param  ServerIp              The TFTP / MTFTP server IP address.
> -  @param  Filename              A Null-terminated ASCII string that specifies a
> directory name or a file
> -                                name.
> -  @param  Info                  Pointer to the MTFTP information.
> -  @param  DontUseBuffer         Set to FALSE for normal TFTP and MTFTP read
> file operation.
> -
> -  @retval EFI_SUCCESS           The TFTP/MTFTP operation was completed.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -  @retval EFI_BUFFER_TOO_SMALL  The buffer is not large enough to complete
> the read operation.
> -  @retval EFI_ABORTED           The callback function aborted the TFTP/MTFTP
> operation.
> -  @retval EFI_TIMEOUT           The TFTP/MTFTP operation timed out.
> -  @retval EFI_ICMP_ERROR        An ICMP error packet was received during the
> MTFTP session.
> -  @retval EFI_TFTP_ERROR        A TFTP error packet was received during the
> MTFTP session.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcMtftp (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN EFI_PXE_BASE_CODE_TFTP_OPCODE    Operation,
> -  IN OUT VOID                         *BufferPtr,
> -  IN BOOLEAN                          Overwrite,
> -  IN OUT UINT64                       *BufferSize,
> -  IN UINTN                            *BlockSize    OPTIONAL,
> -  IN EFI_IP_ADDRESS                   *ServerIp,
> -  IN UINT8                            *Filename,
> -  IN EFI_PXE_BASE_CODE_MTFTP_INFO     *Info         OPTIONAL,
> -  IN BOOLEAN                          DontUseBuffer
> -  )
> -{
> -  PXEBC_PRIVATE_DATA           *Private;
> -  EFI_MTFTP4_CONFIG_DATA       Mtftp4Config;
> -  EFI_STATUS                   Status;
> -  EFI_PXE_BASE_CODE_MODE       *Mode;
> -  EFI_MAC_ADDRESS              TempMacAddr;
> -  EFI_PXE_BASE_CODE_IP_FILTER  IpFilter;
> -
> -  if ((This == NULL)                                                          ||
> -      (Filename == NULL)                                                      ||
> -      (BufferSize == NULL)                                                    ||
> -      ((ServerIp == NULL) ||
> -       (IP4_IS_UNSPECIFIED (NTOHL (ServerIp->Addr[0])) ||
> -        IP4_IS_LOCAL_BROADCAST (NTOHL (ServerIp->Addr[0]))))                  ||
> -      ((BufferPtr == NULL) && DontUseBuffer)                                  ||
> -      ((BlockSize != NULL) && (*BlockSize < 512))) {
> -
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Status  = EFI_DEVICE_ERROR;
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = &Private->Mode;
> -
> -  if (!Mode->AutoArp) {
> -    //
> -    // If AutoArp is set false, check arp cache
> -    //
> -    UpdateArpCache (This);
> -    if (!FindInArpCache (Mode, &ServerIp->v4, &TempMacAddr)) {
> -      return EFI_DEVICE_ERROR;
> -    }
> -  }
> -
> -  //
> -  // Stop Udp4Read instance
> -  //
> -  Private->Udp4Read->Configure (Private->Udp4Read, NULL);
> -
> -  Mode->TftpErrorReceived = FALSE;
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  Mtftp4Config.UseDefaultSetting = FALSE;
> -  Mtftp4Config.TimeoutValue      = PXEBC_MTFTP_TIMEOUT;
> -  Mtftp4Config.TryCount          = PXEBC_MTFTP_RETRIES;
> -
> -  CopyMem (
> -    &Mtftp4Config.StationIp,
> -    &Private->StationIp,
> -    sizeof (EFI_IPv4_ADDRESS)
> -    );
> -  CopyMem (
> -    &Mtftp4Config.SubnetMask,
> -    &Private->SubnetMask,
> -    sizeof (EFI_IPv4_ADDRESS)
> -    );
> -  CopyMem (
> -    &Mtftp4Config.GatewayIp,
> -    &Private->GatewayIp,
> -    sizeof (EFI_IPv4_ADDRESS)
> -    );
> -  CopyMem (
> -    &Mtftp4Config.ServerIp,
> -    ServerIp,
> -    sizeof (EFI_IPv4_ADDRESS)
> -    );
> -
> -  switch (Operation) {
> -
> -  case EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE:
> -
> -    Status = PxeBcTftpGetFileSize (
> -              Private,
> -              &Mtftp4Config,
> -              Filename,
> -              BlockSize,
> -              BufferSize
> -              );
> -
> -    break;
> -
> -  case EFI_PXE_BASE_CODE_TFTP_READ_FILE:
> -
> -    Status = PxeBcTftpReadFile (
> -              Private,
> -              &Mtftp4Config,
> -              Filename,
> -              BlockSize,
> -              BufferPtr,
> -              BufferSize,
> -              DontUseBuffer
> -              );
> -
> -    break;
> -
> -  case EFI_PXE_BASE_CODE_TFTP_WRITE_FILE:
> -
> -    Status = PxeBcTftpWriteFile (
> -              Private,
> -              &Mtftp4Config,
> -              Filename,
> -              Overwrite,
> -              BlockSize,
> -              BufferPtr,
> -              BufferSize
> -              );
> -
> -    break;
> -
> -  case EFI_PXE_BASE_CODE_TFTP_READ_DIRECTORY:
> -
> -    Status = PxeBcTftpReadDirectory (
> -              Private,
> -              &Mtftp4Config,
> -              Filename,
> -              BlockSize,
> -              BufferPtr,
> -              BufferSize,
> -              DontUseBuffer
> -              );
> -
> -    break;
> -
> -  case EFI_PXE_BASE_CODE_MTFTP_GET_FILE_SIZE:
> -  case EFI_PXE_BASE_CODE_MTFTP_READ_FILE:
> -  case EFI_PXE_BASE_CODE_MTFTP_READ_DIRECTORY:
> -    Status = EFI_UNSUPPORTED;
> -    break;
> -
> -  default:
> -
> -    Status = EFI_INVALID_PARAMETER;
> -    break;
> -  }
> -
> -  if (Status == EFI_ICMP_ERROR) {
> -    Mode->IcmpErrorReceived = TRUE;
> -  }
> -
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -ON_EXIT:
> -  Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);
> -  //
> -  // Dhcp(), Discover(), and Mtftp() set the IP filter, and return with the IP
> -  // receive filter list emptied and the filter set to
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP.
> -  //
> -  ZeroMem(&IpFilter, sizeof (EFI_PXE_BASE_CODE_IP_FILTER));
> -  IpFilter.Filters = EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP;
> -  This->SetIpFilter (This, &IpFilter);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  Writes a UDP packet to the network interface.
> -
> -  This function writes a UDP packet specified by the (optional HeaderPtr and)
> -  BufferPtr parameters to the network interface. The UDP header is
> automatically
> -  built by this routine. It uses the parameters OpFlags, DestIp, DestPort,
> GatewayIp,
> -  SrcIp, and SrcPort to build this header. If the packet is successfully built and
> -  transmitted through the network interface, then EFI_SUCCESS will be returned.
> -  If a timeout occurs during the transmission of the packet, then EFI_TIMEOUT
> will
> -  be returned. If an ICMP error occurs during the transmission of the packet,
> then
> -  the IcmpErrorReceived field is set to TRUE, the IcmpError field is filled in and
> -  EFI_ICMP_ERROR will be returned. If the Callback Protocol does not return
> -  EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE, then EFI_ABORTED will
> be returned.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  OpFlags               The UDP operation flags.
> -  @param  DestIp                The destination IP address.
> -  @param  DestPort              The destination UDP port number.
> -  @param  GatewayIp             The gateway IP address.
> -  @param  SrcIp                 The source IP address.
> -  @param  SrcPort               The source UDP port number.
> -  @param  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  HeaderPtr             If HeaderSize is not NULL, a pointer to a header to
> be prefixed to the
> -                                data at BufferPtr.
> -  @param  BufferSize            A pointer to the size of the data at BufferPtr.
> -  @param  BufferPtr             A pointer to the data to be written.
> -
> -  @retval EFI_SUCCESS           The UDP Write operation was completed.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -  @retval EFI_BAD_BUFFER_SIZE   The buffer is too long to be transmitted.
> -  @retval EFI_ABORTED           The callback function aborted the UDP Write
> operation.
> -  @retval EFI_TIMEOUT           The UDP Write operation timed out.
> -  @retval EFI_ICMP_ERROR        An ICMP error packet was received during the
> UDP write session.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcUdpWrite (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN UINT16                           OpFlags,
> -  IN EFI_IP_ADDRESS                   *DestIp,
> -  IN EFI_PXE_BASE_CODE_UDP_PORT       *DestPort,
> -  IN EFI_IP_ADDRESS                   *GatewayIp  OPTIONAL,
> -  IN EFI_IP_ADDRESS                   *SrcIp      OPTIONAL,
> -  IN OUT EFI_PXE_BASE_CODE_UDP_PORT   *SrcPort    OPTIONAL,
> -  IN UINTN                            *HeaderSize OPTIONAL,
> -  IN VOID                             *HeaderPtr  OPTIONAL,
> -  IN UINTN                            *BufferSize,
> -  IN VOID                             *BufferPtr
> -  )
> -{
> -  PXEBC_PRIVATE_DATA        *Private;
> -  EFI_UDP4_PROTOCOL         *Udp4;
> -  EFI_UDP4_COMPLETION_TOKEN Token;
> -  EFI_UDP4_TRANSMIT_DATA    *Udp4TxData;
> -  UINT32                    FragCount;
> -  UINT32                    DataLength;
> -  EFI_UDP4_SESSION_DATA     Udp4Session;
> -  EFI_STATUS                Status;
> -  BOOLEAN                   IsDone;
> -  EFI_PXE_BASE_CODE_MODE    *Mode;
> -  EFI_MAC_ADDRESS           TempMacAddr;
> -
> -  IsDone = FALSE;
> -
> -  if ((This == NULL) || (DestIp == NULL) || (DestPort == NULL)) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if ((GatewayIp != NULL) && (IP4_IS_UNSPECIFIED (NTOHL (GatewayIp-
> >Addr[0])) || IP4_IS_LOCAL_BROADCAST (NTOHL (GatewayIp->Addr[0])))) {
> -    //
> -    // Gateway is provided but it's not a unicast IP address.
> -    //
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if ((HeaderSize != NULL) && ((*HeaderSize == 0) || (HeaderPtr == NULL))) {
> -    //
> -    // The HeaderSize ptr isn't NULL and: 1. the value is zero; or 2. the HeaderPtr
> -    // is NULL.
> -    //
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if ((BufferSize == NULL) || ((*BufferSize != 0) && (BufferPtr == NULL))) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Udp4    = Private->Udp4Write;
> -  Mode    = &Private->Mode;
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  if (!Private->AddressIsOk && (SrcIp == NULL)) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (!Mode->AutoArp) {
> -    //
> -    // If AutoArp is set false, check arp cache
> -    //
> -    UpdateArpCache (This);
> -    if (!FindInArpCache (Mode, &DestIp->v4, &TempMacAddr)) {
> -      return EFI_DEVICE_ERROR;
> -    }
> -  }
> -
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  if ((Private->CurrentUdpSrcPort == 0) ||
> -      ((SrcPort != NULL) && (*SrcPort != Private->CurrentUdpSrcPort))) {
> -    //
> -    // Port is changed, (re)configure the Udp4Write instance
> -    //
> -    if (SrcPort != NULL) {
> -      Private->CurrentUdpSrcPort = *SrcPort;
> -    }
> -  }
> -
> -  Status = PxeBcConfigureUdpWriteInstance (
> -             Udp4,
> -             &Private->StationIp.v4,
> -             &Private->SubnetMask.v4,
> -             &Private->GatewayIp.v4,
> -             &Private->CurrentUdpSrcPort,
> -             Private->Mode.TTL,
> -             Private->Mode.ToS
> -             );
> -  if (EFI_ERROR (Status)) {
> -    Private->CurrentUdpSrcPort = 0;
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  ZeroMem (&Token, sizeof (EFI_UDP4_COMPLETION_TOKEN));
> -  ZeroMem (&Udp4Session, sizeof (EFI_UDP4_SESSION_DATA));
> -
> -  CopyMem (&Udp4Session.DestinationAddress, DestIp, sizeof
> (EFI_IPv4_ADDRESS));
> -  Udp4Session.DestinationPort = *DestPort;
> -  if (SrcIp != NULL) {
> -    CopyMem (&Udp4Session.SourceAddress, SrcIp, sizeof (EFI_IPv4_ADDRESS));
> -  }
> -  if (SrcPort != NULL) {
> -    Udp4Session.SourcePort = *SrcPort;
> -  }
> -
> -  FragCount = (HeaderSize != NULL) ? 2 : 1;
> -  Udp4TxData = (EFI_UDP4_TRANSMIT_DATA *) AllocateZeroPool (sizeof
> (EFI_UDP4_TRANSMIT_DATA) + (FragCount - 1) * sizeof
> (EFI_UDP4_FRAGMENT_DATA));
> -  if (Udp4TxData == NULL) {
> -    return EFI_OUT_OF_RESOURCES;
> -  }
> -
> -  Udp4TxData->FragmentCount = FragCount;
> -  Udp4TxData->FragmentTable[FragCount - 1].FragmentLength = (UINT32)
> *BufferSize;
> -  Udp4TxData->FragmentTable[FragCount - 1].FragmentBuffer = BufferPtr;
> -  DataLength = (UINT32) *BufferSize;
> -
> -  if (FragCount == 2) {
> -
> -    Udp4TxData->FragmentTable[0].FragmentLength = (UINT32) *HeaderSize;
> -    Udp4TxData->FragmentTable[0].FragmentBuffer = HeaderPtr;
> -    DataLength += (UINT32) *HeaderSize;
> -  }
> -
> -  if (GatewayIp != NULL) {
> -    Udp4TxData->GatewayAddress  = (EFI_IPv4_ADDRESS *) GatewayIp;
> -  }
> -  Udp4TxData->UdpSessionData  = &Udp4Session;
> -  Udp4TxData->DataLength      = DataLength;
> -  Token.Packet.TxData         = Udp4TxData;
> -
> -  Status = gBS->CreateEvent (
> -                  EVT_NOTIFY_SIGNAL,
> -                  TPL_NOTIFY,
> -                  PxeBcCommonNotify,
> -                  &IsDone,
> -                  &Token.Event
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    goto ON_EXIT;
> -  }
> -
> -  Status = Udp4->Transmit (Udp4, &Token);
> -  if (EFI_ERROR (Status)) {
> -    if (Status == EFI_ICMP_ERROR) {
> -      Mode->IcmpErrorReceived = TRUE;
> -    }
> -    goto ON_EXIT;
> -  }
> -
> -  while (!IsDone) {
> -
> -    Udp4->Poll (Udp4);
> -  }
> -
> -  Status = Token.Status;
> -
> -ON_EXIT:
> -
> -  if (Token.Event != NULL) {
> -    gBS->CloseEvent (Token.Event);
> -  }
> -
> -  FreePool (Udp4TxData);
> -
> -  //
> -  // Reset the instance.
> -  //
> -  Udp4->Configure (Udp4, NULL);
> -  return Status;
> -}
> -
> -/**
> -  Decide whether the incoming UDP packet is acceptable per IP filter settings
> -  in provided PxeBcMode.
> -
> -  @param  PxeBcMode          Pointer to EFI_PXE_BASE_CODE_MODE.
> -  @param  Session            Received UDP session.
> -
> -  @retval TRUE               The UDP package matches IP filters.
> -  @retval FALSE              The UDP package doesn't matches IP filters.
> -
> -**/
> -BOOLEAN
> -CheckIpByFilter (
> -  IN EFI_PXE_BASE_CODE_MODE    *PxeBcMode,
> -  IN EFI_UDP4_SESSION_DATA     *Session
> -  )
> -{
> -  UINTN                   Index;
> -  EFI_IPv4_ADDRESS        Ip4Address;
> -  EFI_IPv4_ADDRESS        DestIp4Address;
> -
> -  if ((PxeBcMode->IpFilter.Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS) != 0) {
> -    return TRUE;
> -  }
> -
> -  CopyMem (&DestIp4Address, &Session->DestinationAddress, sizeof
> (DestIp4Address));
> -  if (((PxeBcMode->IpFilter.Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST) != 0) &&
> -      IP4_IS_MULTICAST (EFI_NTOHL (DestIp4Address))
> -      ) {
> -    return TRUE;
> -  }
> -
> -  if (((PxeBcMode->IpFilter.Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST) != 0) &&
> -      IP4_IS_LOCAL_BROADCAST (EFI_NTOHL (DestIp4Address))
> -      ) {
> -    return TRUE;
> -  }
> -
> -  CopyMem (&Ip4Address, &PxeBcMode->StationIp.v4, sizeof (Ip4Address));
> -  if (((PxeBcMode->IpFilter.Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP) != 0) &&
> -      EFI_IP4_EQUAL (&Ip4Address, &DestIp4Address)
> -      ) {
> -    return TRUE;
> -  }
> -
> -  ASSERT (PxeBcMode->IpFilter.IpCnt < EFI_PXE_BASE_CODE_MAX_IPCNT);
> -
> -  for (Index = 0; Index < PxeBcMode->IpFilter.IpCnt; Index++) {
> -    CopyMem (
> -      &Ip4Address,
> -      &PxeBcMode->IpFilter.IpList[Index].v4,
> -      sizeof (Ip4Address)
> -      );
> -    if (EFI_IP4_EQUAL (&Ip4Address, &DestIp4Address)) {
> -      return TRUE;
> -    }
> -  }
> -
> -  return FALSE;
> -}
> -
> -/**
> -  Reads a UDP packet from the network interface.
> -
> -  This function reads a UDP packet from a network interface. The data contents
> -  are returned in (the optional HeaderPtr and) BufferPtr, and the size of the
> -  buffer received is returned in BufferSize . If the input BufferSize is smaller
> -  than the UDP packet received (less optional HeaderSize), it will be set to the
> -  required size, and EFI_BUFFER_TOO_SMALL will be returned. In this case, the
> -  contents of BufferPtr are undefined, and the packet is lost. If a UDP packet is
> -  successfully received, then EFI_SUCCESS will be returned, and the information
> -  from the UDP header will be returned in DestIp, DestPort, SrcIp, and SrcPort if
> -  they are not NULL. Depending on the values of OpFlags and the DestIp,
> DestPort,
> -  SrcIp, and SrcPort input values, different types of UDP packet receive filtering
> -  will be performed. The following tables summarize these receive filter
> operations.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  OpFlags               The UDP operation flags.
> -  @param  DestIp                The destination IP address.
> -  @param  DestPort              The destination UDP port number.
> -  @param  SrcIp                 The source IP address.
> -  @param  SrcPort               The source UDP port number.
> -  @param  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  HeaderPtr             If HeaderSize is not NULL, a pointer to a header to
> be prefixed to the
> -                                data at BufferPtr.
> -  @param  BufferSize            A pointer to the size of the data at BufferPtr.
> -  @param  BufferPtr             A pointer to the data to be read.
> -
> -  @retval EFI_SUCCESS           The UDP Read operation was completed.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -  @retval EFI_BUFFER_TOO_SMALL  The packet is larger than Buffer can hold.
> -  @retval EFI_ABORTED           The callback function aborted the UDP Read
> operation.
> -  @retval EFI_TIMEOUT           The UDP Read operation timed out.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcUdpRead (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL                *This,
> -  IN UINT16                                    OpFlags,
> -  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,
> -  IN UINTN                                     *HeaderSize OPTIONAL,
> -  IN VOID                                      *HeaderPtr  OPTIONAL,
> -  IN OUT UINTN                                 *BufferSize,
> -  IN VOID                                      *BufferPtr
> -  )
> -{
> -  PXEBC_PRIVATE_DATA        *Private;
> -  EFI_PXE_BASE_CODE_MODE    *Mode;
> -  EFI_UDP4_PROTOCOL         *Udp4;
> -  EFI_UDP4_COMPLETION_TOKEN Token;
> -  EFI_UDP4_RECEIVE_DATA     *RxData;
> -  EFI_UDP4_SESSION_DATA     *Session;
> -  EFI_STATUS                Status;
> -  BOOLEAN                   IsDone;
> -  BOOLEAN                   Matched;
> -  UINTN                     CopiedLen;
> -  UINTN                     HeaderLen;
> -  UINTN                     HeaderCopiedLen;
> -  UINTN                     BufferCopiedLen;
> -  UINT32                    FragmentLength;
> -  UINTN                     FragmentIndex;
> -  UINT8                     *FragmentBuffer;
> -
> -  if (This == NULL || DestIp == NULL || DestPort == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT) == 0
> && (DestPort == NULL)) ||
> -      ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT) == 0
> && (SrcIp == NULL)) ||
> -      ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT) == 0 &&
> (SrcPort == NULL))) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (((HeaderSize != NULL) && (*HeaderSize == 0)) || ((HeaderSize != NULL) &&
> (HeaderPtr == NULL))) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if ((BufferSize == NULL) || (BufferPtr == NULL)) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -  Udp4    = Private->Udp4Read;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  Status = gBS->CreateEvent (
> -                  EVT_NOTIFY_SIGNAL,
> -                  TPL_NOTIFY,
> -                  PxeBcCommonNotify,
> -                  &IsDone,
> -                  &Token.Event
> -                  );
> -  if (EFI_ERROR (Status)) {
> -    return EFI_OUT_OF_RESOURCES;
> -  }
> -
> -TRY_AGAIN:
> -
> -  IsDone = FALSE;
> -  Status = Udp4->Receive (Udp4, &Token);
> -  if (EFI_ERROR (Status)) {
> -    if (Status == EFI_ICMP_ERROR) {
> -      Mode->IcmpErrorReceived = TRUE;
> -    }
> -    goto ON_EXIT;
> -  }
> -
> -  Udp4->Poll (Udp4);
> -
> -  if (!IsDone) {
> -    Status = EFI_TIMEOUT;
> -  } else {
> -
> -    //
> -    // check whether this packet matches the filters
> -    //
> -    if (EFI_ERROR (Token.Status)){
> -      goto ON_EXIT;
> -    }
> -
> -    RxData  = Token.Packet.RxData;
> -    Session = &RxData->UdpSession;
> -
> -    Matched = TRUE;
> -
> -    if ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_USE_FILTER) != 0) {
> -      Matched = FALSE;
> -      //
> -      // Check UDP package by IP filter settings
> -      //
> -      if (CheckIpByFilter (Mode, Session)) {
> -        Matched = TRUE;
> -      }
> -    }
> -
> -    if (Matched) {
> -      Matched = FALSE;
> -
> -      //
> -      // Match the destination ip of the received udp dgram
> -      //
> -      if ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_IP) != 0) {
> -        Matched = TRUE;
> -
> -        if (DestIp != NULL) {
> -          CopyMem (DestIp, &Session->DestinationAddress, sizeof
> (EFI_IPv4_ADDRESS));
> -        }
> -      } else {
> -        if (DestIp != NULL) {
> -          if (EFI_IP4_EQUAL (DestIp, &Session->DestinationAddress)) {
> -            Matched = TRUE;
> -          }
> -        } else {
> -          if (EFI_IP4_EQUAL (&Private->StationIp, &Session->DestinationAddress)) {
> -            Matched = TRUE;
> -          }
> -        }
> -      }
> -    }
> -
> -    if (Matched) {
> -      //
> -      // Match the destination port of the received udp dgram
> -      //
> -      if ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT) != 0)
> {
> -
> -        if (DestPort != NULL) {
> -          *DestPort = Session->DestinationPort;
> -        }
> -      } else {
> -
> -        if (*DestPort != Session->DestinationPort) {
> -          Matched = FALSE;
> -        }
> -      }
> -    }
> -
> -    if (Matched) {
> -      //
> -      // Match the source ip of the received udp dgram
> -      //
> -      if ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP) != 0) {
> -
> -        if (SrcIp != NULL) {
> -          CopyMem (SrcIp, &Session->SourceAddress, sizeof (EFI_IPv4_ADDRESS));
> -        }
> -      } else {
> -
> -        if (!EFI_IP4_EQUAL (SrcIp, &Session->SourceAddress)) {
> -          Matched = FALSE;
> -        }
> -      }
> -    }
> -
> -    if (Matched) {
> -      //
> -      // Match the source port of the received udp dgram
> -      //
> -      if ((OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT) != 0) {
> -
> -        if (SrcPort != NULL) {
> -          *SrcPort = Session->SourcePort;
> -        }
> -      } else {
> -
> -        if (*SrcPort != Session->SourcePort) {
> -          Matched = FALSE;
> -        }
> -      }
> -    }
> -
> -    if (Matched) {
> -      ASSERT (RxData != NULL);
> -
> -      HeaderLen = 0;
> -      if (HeaderSize != NULL) {
> -        HeaderLen = MIN (*HeaderSize, RxData->DataLength);
> -      }
> -
> -      if (RxData->DataLength - HeaderLen > *BufferSize) {
> -        Status = EFI_BUFFER_TOO_SMALL;
> -      } else {
> -        *HeaderSize = HeaderLen;
> -        *BufferSize = RxData->DataLength - HeaderLen;
> -
> -        HeaderCopiedLen = 0;
> -        BufferCopiedLen = 0;
> -        for (FragmentIndex = 0; FragmentIndex < RxData->FragmentCount;
> FragmentIndex++) {
> -          FragmentLength = RxData-
> >FragmentTable[FragmentIndex].FragmentLength;
> -          FragmentBuffer = RxData-
> >FragmentTable[FragmentIndex].FragmentBuffer;
> -          if (HeaderCopiedLen + FragmentLength < HeaderLen) {
> -            //
> -            // Copy the header part of received data.
> -            //
> -            CopyMem ((UINT8 *) HeaderPtr + HeaderCopiedLen, FragmentBuffer,
> FragmentLength);
> -            HeaderCopiedLen += FragmentLength;
> -          } else if (HeaderCopiedLen < HeaderLen) {
> -            //
> -            // Copy the header part of received data.
> -            //
> -            CopiedLen = HeaderLen - HeaderCopiedLen;
> -            CopyMem ((UINT8 *) HeaderPtr + HeaderCopiedLen, FragmentBuffer,
> CopiedLen);
> -            HeaderCopiedLen += CopiedLen;
> -
> -            //
> -            // Copy the other part of received data.
> -            //
> -            CopyMem ((UINT8 *) BufferPtr + BufferCopiedLen, FragmentBuffer +
> CopiedLen, FragmentLength - CopiedLen);
> -            BufferCopiedLen += (FragmentLength - CopiedLen);
> -          } else {
> -            //
> -            // Copy the other part of received data.
> -            //
> -            CopyMem ((UINT8 *) BufferPtr + BufferCopiedLen, FragmentBuffer,
> FragmentLength);
> -            BufferCopiedLen += FragmentLength;
> -          }
> -        }
> -      }
> -    } else {
> -
> -      Status = EFI_TIMEOUT;
> -    }
> -
> -    //
> -    // Recycle the RxData
> -    //
> -    gBS->SignalEvent (RxData->RecycleSignal);
> -
> -    if (!Matched) {
> -      goto TRY_AGAIN;
> -    }
> -  }
> -
> -ON_EXIT:
> -
> -  Udp4->Cancel (Udp4, &Token);
> -
> -  gBS->CloseEvent (Token.Event);
> -
> -  return Status;
> -}
> -
> -/**
> -  Updates the IP receive filters of a network device and enables software
> filtering.
> -
> -  The NewFilter field is used to modify the network device's current IP receive
> -  filter settings and to enable a software filter. This function updates the IpFilter
> -  field of the EFI_PXE_BASE_CODE_MODE structure with the contents of
> NewIpFilter.
> -  The software filter is used when the USE_FILTER in OpFlags is set to UdpRead().
> -  The current hardware filter remains in effect no matter what the settings of
> OpFlags
> -  are, so that the meaning of ANY_DEST_IP set in OpFlags to UdpRead() is from
> those
> -  packets whose reception is enabled in hardware-physical NIC address (unicast),
> -  broadcast address, logical address or addresses (multicast), or all
> (promiscuous).
> -  UdpRead() does not modify the IP filter settings.
> -  Dhcp(), Discover(), and Mtftp() set the IP filter, and return with the IP receive
> -  filter list emptied and the filter set to
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP.
> -  If an application or driver wishes to preserve the IP receive filter settings,
> -  it will have to preserve the IP receive filter settings before these calls, and
> -  use SetIpFilter() to restore them after the calls. If incompatible filtering is
> -  requested (for example, PROMISCUOUS with anything else) or if the device
> does not
> -  support a requested filter setting and it cannot be accommodated in software
> -  (for example, PROMISCUOUS not supported), EFI_INVALID_PARAMETER will
> be returned.
> -  The IPlist field is used to enable IPs other than the StationIP. They may be
> -  multicast or unicast. If IPcnt is set as well as
> EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP,
> -  then both the StationIP and the IPs from the IPlist will be used.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  NewFilter             Pointer to the new set of IP receive filters.
> -
> -  @retval EFI_SUCCESS           The IP receive filter settings were updated.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcSetIpFilter (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN EFI_PXE_BASE_CODE_IP_FILTER      *NewFilter
> -  )
> -{
> -  EFI_STATUS                Status;
> -  PXEBC_PRIVATE_DATA        *Private;
> -  EFI_PXE_BASE_CODE_MODE    *Mode;
> -  UINTN                     Index;
> -  EFI_UDP4_CONFIG_DATA      *Udp4Cfg;
> -  BOOLEAN                   PromiscuousNeed;
> -  BOOLEAN                   AcceptPromiscuous;
> -  BOOLEAN                   AcceptBroadcast;
> -  BOOLEAN                   MultiCastUpdate;
> -
> -  if (This == NULL) {
> -    DEBUG ((EFI_D_ERROR, "This == NULL.\n"));
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode = Private->PxeBc.Mode;
> -
> -  if (NewFilter == NULL) {
> -    DEBUG ((EFI_D_ERROR, "NewFilter == NULL.\n"));
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (NewFilter->IpCnt > EFI_PXE_BASE_CODE_MAX_IPCNT) {
> -    DEBUG ((EFI_D_ERROR, "NewFilter->IpCnt > %d.\n",
> EFI_PXE_BASE_CODE_MAX_IPCNT));
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (!Mode->Started) {
> -    DEBUG ((EFI_D_ERROR, "BC was not started.\n"));
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  if (Mode->UsingIpv6) {
> -    DEBUG ((EFI_D_ERROR, "This driver is PXE for IPv4 Only.\n"));
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  PromiscuousNeed = FALSE;
> -
> -  for (Index = 0; Index < NewFilter->IpCnt; ++Index) {
> -    if (IP4_IS_LOCAL_BROADCAST (EFI_IP4 (NewFilter->IpList[Index].v4))) {
> -      //
> -      // The IP is a broadcast address.
> -      //
> -      DEBUG ((EFI_D_ERROR, "There is broadcast address in NewFilter.\n"));
> -      return EFI_INVALID_PARAMETER;
> -    }
> -    if ((EFI_NTOHL(Mode->StationIp) != 0) &&
> -        (EFI_NTOHL(Mode->SubnetMask) != 0) &&
> -        IP4_NET_EQUAL(EFI_NTOHL(Mode->StationIp), EFI_NTOHL(NewFilter-
> >IpList[Index].v4), EFI_NTOHL(Mode->SubnetMask)) &&
> -        NetIp4IsUnicast (EFI_IP4 (NewFilter->IpList[Index].v4), EFI_NTOHL(Mode-
> >SubnetMask)) &&
> -        ((NewFilter->Filters & EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP) != 0)) {
> -      //
> -      // If EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP is set and IP4 address is in
> IpList,
> -      // promiscuous mode is needed.
> -      //
> -      PromiscuousNeed = TRUE;
> -    }
> -  }
> -
> -  AcceptPromiscuous = FALSE;
> -  AcceptBroadcast   = FALSE;
> -  MultiCastUpdate   = FALSE;
> -
> -  if (PromiscuousNeed ||
> -      ((NewFilter->Filters & EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS) != 0)
> ||
> -      ((NewFilter->Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_PROMISCUOUS_MULTICAST) != 0)
> -     ) {
> -    //
> -    // Configure the udp4 filter to receive all packages.
> -    //
> -    AcceptPromiscuous  = TRUE;
> -  } else if ((NewFilter->Filters &
> EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST) != 0) {
> -    //
> -    // Configure the udp4 filter to receive all broadcast packages.
> -    //
> -    AcceptBroadcast   = TRUE;
> -  }
> -
> -  //
> -  // In multicast condition when Promiscuous FALSE and IpCnt no-zero.
> -  // Here check if there is any update of the multicast ip address. If yes,
> -  // we need leave the old multicast group (by Config UDP instance to NULL),
> -  // and join the new multicast group.
> -  //
> -  if (!AcceptPromiscuous) {
> -    if ((NewFilter->Filters & EFI_PXE_BASE_CODE_IP_FILTER_STATION_IP) != 0) {
> -      if (Mode->IpFilter.IpCnt != NewFilter->IpCnt) {
> -        MultiCastUpdate = TRUE;
> -      } else if (CompareMem (Mode->IpFilter.IpList, NewFilter->IpList, NewFilter-
> >IpCnt * sizeof (EFI_IP_ADDRESS)) != 0 ) {
> -        MultiCastUpdate = TRUE;
> -      }
> -    }
> -  }
> -
> -  //
> -  // Check whether we need reconfigure the UDP instance.
> -  //
> -  Udp4Cfg = &Private->Udp4CfgData;
> -  if ((AcceptPromiscuous != Udp4Cfg->AcceptPromiscuous) ||
> -      (AcceptBroadcast != Udp4Cfg->AcceptBroadcast)     || MultiCastUpdate) {
> -    //
> -    // Clear the UDP instance configuration, all joined groups will be left
> -    // during the operation.
> -    //
> -    Private->Udp4Read->Configure (Private->Udp4Read, NULL);
> -
> -    //
> -    // Configure the UDP instance with the new configuration.
> -    //
> -    Udp4Cfg->AcceptPromiscuous = AcceptPromiscuous;
> -    Udp4Cfg->AcceptBroadcast   = AcceptBroadcast;
> -    Status = Private->Udp4Read->Configure (Private->Udp4Read, Udp4Cfg);
> -    if (EFI_ERROR (Status)) {
> -      return Status;
> -    }
> -
> -    //
> -    // In not Promiscuous mode, need to join the new multicast group.
> -    //
> -    if (!AcceptPromiscuous) {
> -      for (Index = 0; Index < NewFilter->IpCnt; ++Index) {
> -        if (IP4_IS_MULTICAST (EFI_NTOHL (NewFilter->IpList[Index].v4))) {
> -          //
> -          // Join the mutilcast group.
> -          //
> -          Status = Private->Udp4Read->Groups (Private->Udp4Read, TRUE,
> &NewFilter->IpList[Index].v4);
> -          if (EFI_ERROR (Status)) {
> -            return Status;
> -          }
> -        }
> -      }
> -    }
> -  }
> -
> -
> -  //
> -  // Save the new filter.
> -  //
> -  CopyMem (&Mode->IpFilter, NewFilter, sizeof (Mode->IpFilter));
> -
> -  return EFI_SUCCESS;
> -}
> -
> -
> -/**
> -  Uses the ARP protocol to resolve a MAC address.
> -
> -  This function uses the ARP protocol to resolve a MAC address. The UsingIpv6
> field
> -  of the EFI_PXE_BASE_CODE_MODE structure is used to determine if IPv4 or
> IPv6
> -  addresses are being used. The IP address specified by IpAddr is used to resolve
> -  a MAC address. If the ARP protocol succeeds in resolving the specified address,
> -  then the ArpCacheEntries and ArpCache fields of the
> EFI_PXE_BASE_CODE_MODE structure
> -  are updated, and EFI_SUCCESS is returned. If MacAddr is not NULL, the
> resolved
> -  MAC address is placed there as well.  If the PXE Base Code protocol is in the
> -  stopped state, then EFI_NOT_STARTED is returned. If the ARP protocol
> encounters
> -  a timeout condition while attempting to resolve an address, then
> EFI_TIMEOUT is
> -  returned. If the Callback Protocol does not return
> EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE,
> -  then EFI_ABORTED is returned.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  IpAddr                Pointer to the IP address that is used to resolve a
> MAC address.
> -  @param  MacAddr               If not NULL, a pointer to the MAC address that was
> resolved with the
> -                                ARP protocol.
> -
> -  @retval EFI_SUCCESS           The IP or MAC address was resolved.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -  @retval EFI_DEVICE_ERROR      The network device encountered an error
> during this operation.
> -  @retval EFI_ICMP_ERROR        Something error occur with the ICMP packet
> message.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcArp (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       * This,
> -  IN EFI_IP_ADDRESS                   * IpAddr,
> -  IN EFI_MAC_ADDRESS                  * MacAddr OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_STATUS              Status;
> -  EFI_MAC_ADDRESS         TempMacAddr;
> -
> -  if (This == NULL || IpAddr == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  if (!Private->AddressIsOk || Mode->UsingIpv6) {
> -    //
> -    // We can't resolve the IP address if we don't have a local address now.
> -    // Don't have ARP for IPv6.
> -    //
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Mode->IcmpErrorReceived = FALSE;
> -
> -  if (!Mode->AutoArp) {
> -    //
> -    // If AutoArp is set false, check arp cache
> -    //
> -    UpdateArpCache (This);
> -    if (!FindInArpCache (Mode, &IpAddr->v4, &TempMacAddr)) {
> -      return EFI_DEVICE_ERROR;
> -    }
> -  } else {
> -    Status = Private->Arp->Request (Private->Arp, &IpAddr->v4, NULL,
> &TempMacAddr);
> -    if (EFI_ERROR (Status)) {
> -      if (Status == EFI_ICMP_ERROR) {
> -        Mode->IcmpErrorReceived = TRUE;
> -      }
> -      return Status;
> -    }
> -  }
> -
> -  if (MacAddr != NULL) {
> -    CopyMem (MacAddr, &TempMacAddr, sizeof (EFI_MAC_ADDRESS));
> -  }
> -
> -  return EFI_SUCCESS;
> -}
> -
> -/**
> -  Updates the parameters that affect the operation of the PXE Base Code
> Protocol.
> -
> -  This function sets parameters that affect the operation of the PXE Base Code
> Protocol.
> -  The parameter specified by NewAutoArp is used to control the generation of
> ARP
> -  protocol packets. If NewAutoArp is TRUE, then ARP Protocol packets will be
> generated
> -  as required by the PXE Base Code Protocol. If NewAutoArp is FALSE, then no
> ARP
> -  Protocol packets will be generated. In this case, the only mappings that are
> -  available are those stored in the ArpCache of the EFI_PXE_BASE_CODE_MODE
> structure.
> -  If there are not enough mappings in the ArpCache to perform a PXE Base Code
> Protocol
> -  service, then the service will fail. This function updates the AutoArp field of
> -  the EFI_PXE_BASE_CODE_MODE structure to NewAutoArp.
> -  The SetParameters() call must be invoked after a Callback Protocol is installed
> -  to enable the use of callbacks.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  NewAutoArp            If not NULL, a pointer to a value that specifies
> whether to replace the
> -                                current value of AutoARP.
> -  @param  NewSendGUID           If not NULL, a pointer to a value that specifies
> whether to replace the
> -                                current value of SendGUID.
> -  @param  NewTTL                If not NULL, a pointer to be used in place of the
> current value of TTL,
> -                                the "time to live" field of the IP header.
> -  @param  NewToS                If not NULL, a pointer to be used in place of the
> current value of ToS,
> -                                the "type of service" field of the IP header.
> -  @param  NewMakeCallback       If not NULL, a pointer to a value that specifies
> whether to replace the
> -                                current value of the MakeCallback field of the Mode structure.
> -
> -  @retval EFI_SUCCESS           The new parameters values were updated.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcSetParameters (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       *This,
> -  IN BOOLEAN                          *NewAutoArp OPTIONAL,
> -  IN BOOLEAN                          *NewSendGUID OPTIONAL,
> -  IN UINT8                            *NewTTL OPTIONAL,
> -  IN UINT8                            *NewToS OPTIONAL,
> -  IN BOOLEAN                          *NewMakeCallback  // OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_STATUS              Status;
> -
> -  Status = EFI_SUCCESS;
> -
> -  if (This == NULL) {
> -    Status = EFI_INVALID_PARAMETER;
> -    goto ON_EXIT;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (NewSendGUID != NULL && *NewSendGUID) {
> -    //
> -    // FixMe, cann't locate SendGuid
> -    //
> -  }
> -
> -  if (NewMakeCallback != NULL && *NewMakeCallback) {
> -
> -    Status = gBS->HandleProtocol (
> -                    Private->Controller,
> -                    &gEfiPxeBaseCodeCallbackProtocolGuid,
> -                    (VOID **) &Private->PxeBcCallback
> -                    );
> -    if (EFI_ERROR (Status) || (Private->PxeBcCallback->Callback == NULL)) {
> -
> -      Status = EFI_INVALID_PARAMETER;
> -      goto ON_EXIT;
> -    }
> -  }
> -
> -  if (!Mode->Started) {
> -    Status = EFI_NOT_STARTED;
> -    goto ON_EXIT;
> -  }
> -
> -  if (NewMakeCallback != NULL) {
> -
> -    if (*NewMakeCallback) {
> -      //
> -      // Update the Callback protocol.
> -      //
> -      Status = gBS->HandleProtocol (
> -                      Private->Controller,
> -                      &gEfiPxeBaseCodeCallbackProtocolGuid,
> -                      (VOID **) &Private->PxeBcCallback
> -                      );
> -
> -      if (EFI_ERROR (Status) || (Private->PxeBcCallback->Callback == NULL)) {
> -        Status = EFI_INVALID_PARAMETER;
> -        goto ON_EXIT;
> -      }
> -    } else {
> -      Private->PxeBcCallback = NULL;
> -    }
> -
> -    Mode->MakeCallbacks = *NewMakeCallback;
> -  }
> -
> -  if (NewAutoArp != NULL) {
> -    Mode->AutoArp = *NewAutoArp;
> -  }
> -
> -  if (NewSendGUID != NULL) {
> -    Mode->SendGUID = *NewSendGUID;
> -  }
> -
> -  if (NewTTL != NULL) {
> -    Mode->TTL = *NewTTL;
> -  }
> -
> -  if (NewToS != NULL) {
> -    Mode->ToS = *NewToS;
> -  }
> -
> -ON_EXIT:
> -  return Status;
> -}
> -
> -/**
> -  Updates the station IP address and/or subnet mask values of a network device.
> -
> -  This function updates the station IP address and/or subnet mask values of a
> network
> -  device. The NewStationIp field is used to modify the network device's current
> IP address.
> -  If NewStationIP is NULL, then the current IP address will not be modified.
> Otherwise,
> -  this function updates the StationIp field of the EFI_PXE_BASE_CODE_MODE
> structure
> -  with NewStationIp. The NewSubnetMask field is used to modify the network
> device's current subnet
> -  mask. If NewSubnetMask is NULL, then the current subnet mask will not be
> modified.
> -  Otherwise, this function updates the SubnetMask field of the
> EFI_PXE_BASE_CODE_MODE
> -  structure with NewSubnetMask.
> -
> -  @param  This                  Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  NewStationIp          Pointer to the new IP address to be used by the
> network device.
> -  @param  NewSubnetMask         Pointer to the new subnet mask to be used by
> the network device.
> -
> -  @retval EFI_SUCCESS           The new station IP address and/or subnet mask
> were updated.
> -  @retval EFI_NOT_STARTED       The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcSetStationIP (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       * This,
> -  IN EFI_IP_ADDRESS                   * NewStationIp  OPTIONAL,
> -  IN EFI_IP_ADDRESS                   * NewSubnetMask OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -  EFI_ARP_CONFIG_DATA     ArpConfigData;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (NewSubnetMask != NULL && !IP4_IS_VALID_NETMASK (NTOHL
> (NewSubnetMask->Addr[0]))) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  if (NewStationIp != NULL) {
> -    if (IP4_IS_UNSPECIFIED(NTOHL (NewStationIp->Addr[0])) ||
> -        IP4_IS_LOCAL_BROADCAST(NTOHL (NewStationIp->Addr[0])) ||
> -        (NewSubnetMask != NULL && NewSubnetMask->Addr[0] != 0
> && !NetIp4IsUnicast (NTOHL (NewStationIp->Addr[0]), NTOHL
> (NewSubnetMask->Addr[0])))) {
> -      return EFI_INVALID_PARAMETER;
> -    }
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  if (NewStationIp != NULL) {
> -    CopyMem (&Mode->StationIp, NewStationIp, sizeof (EFI_IP_ADDRESS));
> -    CopyMem (&Private->StationIp, NewStationIp, sizeof (EFI_IP_ADDRESS));
> -  }
> -
> -  if (NewSubnetMask != NULL) {
> -    CopyMem (&Mode->SubnetMask, NewSubnetMask, sizeof
> (EFI_IP_ADDRESS));
> -    CopyMem (&Private->SubnetMask ,NewSubnetMask, sizeof
> (EFI_IP_ADDRESS));
> -  }
> -
> -  Private->AddressIsOk = TRUE;
> -
> -  if (!Mode->UsingIpv6) {
> -    //
> -    // If in IPv4 mode, configure the corresponding ARP with this new
> -    // station IP address.
> -    //
> -    ZeroMem (&ArpConfigData, sizeof (EFI_ARP_CONFIG_DATA));
> -
> -    ArpConfigData.SwAddressType   = 0x0800;
> -    ArpConfigData.SwAddressLength = (UINT8) sizeof (EFI_IPv4_ADDRESS);
> -    ArpConfigData.StationAddress  = &Private->StationIp.v4;
> -
> -    Private->Arp->Configure (Private->Arp, NULL);
> -    Private->Arp->Configure (Private->Arp, &ArpConfigData);
> -
> -    //
> -    // Update the route table.
> -    //
> -    Mode->RouteTableEntries                = 1;
> -    Mode->RouteTable[0].IpAddr.Addr[0]     = Private->StationIp.Addr[0] &
> Private->SubnetMask.Addr[0];
> -    Mode->RouteTable[0].SubnetMask.Addr[0] = Private->SubnetMask.Addr[0];
> -    Mode->RouteTable[0].GwAddr.Addr[0]     = 0;
> -  }
> -
> -  return EFI_SUCCESS;
> -}
> -
> -/**
> -  Updates the contents of the cached DHCP and Discover packets.
> -
> -  The pointers to the new packets are used to update the contents of the
> cached
> -  packets in the EFI_PXE_BASE_CODE_MODE structure.
> -
> -  @param  This                   Pointer to the EFI_PXE_BASE_CODE_PROTOCOL
> instance.
> -  @param  NewDhcpDiscoverValid   Pointer to a value that will replace the
> current
> -                                 DhcpDiscoverValid field.
> -  @param  NewDhcpAckReceived     Pointer to a value that will replace the
> current
> -                                 DhcpAckReceived field.
> -  @param  NewProxyOfferReceived  Pointer to a value that will replace the
> current
> -                                 ProxyOfferReceived field.
> -  @param  NewPxeDiscoverValid    Pointer to a value that will replace the
> current
> -                                 ProxyOfferReceived field.
> -  @param  NewPxeReplyReceived    Pointer to a value that will replace the
> current
> -                                 PxeReplyReceived field.
> -  @param  NewPxeBisReplyReceived Pointer to a value that will replace the
> current
> -                                 PxeBisReplyReceived field.
> -  @param  NewDhcpDiscover        Pointer to the new cached DHCP Discover
> packet contents.
> -  @param  NewDhcpAck             Pointer to the new cached DHCP Ack packet
> contents.
> -  @param  NewProxyOffer          Pointer to the new cached Proxy Offer packet
> contents.
> -  @param  NewPxeDiscover         Pointer to the new cached PXE Discover packet
> contents.
> -  @param  NewPxeReply            Pointer to the new cached PXE Reply packet
> contents.
> -  @param  NewPxeBisReply         Pointer to the new cached PXE BIS Reply
> packet contents.
> -
> -  @retval EFI_SUCCESS            The cached packet contents were updated.
> -  @retval EFI_NOT_STARTED        The PXE Base Code Protocol is in the stopped
> state.
> -  @retval EFI_INVALID_PARAMETER  This is NULL or not point to a valid
> EFI_PXE_BASE_CODE_PROTOCOL structure.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeBcSetPackets (
> -  IN EFI_PXE_BASE_CODE_PROTOCOL       * This,
> -  IN BOOLEAN                          * NewDhcpDiscoverValid OPTIONAL,
> -  IN BOOLEAN                          * NewDhcpAckReceived OPTIONAL,
> -  IN BOOLEAN                          * NewProxyOfferReceived OPTIONAL,
> -  IN BOOLEAN                          * NewPxeDiscoverValid OPTIONAL,
> -  IN BOOLEAN                          * NewPxeReplyReceived OPTIONAL,
> -  IN BOOLEAN                          * NewPxeBisReplyReceived OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewDhcpDiscover OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewDhcpAck OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewProxyOffer OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewPxeDiscover OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewPxeReply OPTIONAL,
> -  IN EFI_PXE_BASE_CODE_PACKET         * NewPxeBisReply OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA      *Private;
> -  EFI_PXE_BASE_CODE_MODE  *Mode;
> -
> -  if (This == NULL) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);
> -  Mode    = Private->PxeBc.Mode;
> -
> -  if (!Mode->Started) {
> -    return EFI_NOT_STARTED;
> -  }
> -
> -  if (NewDhcpDiscoverValid != NULL) {
> -    Mode->DhcpDiscoverValid = *NewDhcpDiscoverValid;
> -  }
> -
> -  if (NewDhcpAckReceived != NULL) {
> -    Mode->DhcpAckReceived = *NewDhcpAckReceived;
> -  }
> -
> -  if (NewProxyOfferReceived != NULL) {
> -    Mode->ProxyOfferReceived = *NewProxyOfferReceived;
> -  }
> -
> -  if (NewPxeDiscoverValid != NULL) {
> -    Mode->PxeDiscoverValid = *NewPxeDiscoverValid;
> -  }
> -
> -  if (NewPxeReplyReceived != NULL) {
> -    Mode->PxeReplyReceived = *NewPxeReplyReceived;
> -  }
> -
> -  if (NewPxeBisReplyReceived != NULL) {
> -    Mode->PxeBisReplyReceived = *NewPxeBisReplyReceived;
> -  }
> -
> -  if (NewDhcpDiscover != NULL) {
> -    CopyMem (&Mode->DhcpDiscover, NewDhcpDiscover, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  if (NewDhcpAck != NULL) {
> -    CopyMem (&Mode->DhcpAck, NewDhcpAck, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  if (NewProxyOffer != NULL) {
> -    CopyMem (&Mode->ProxyOffer, NewProxyOffer, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  if (NewPxeDiscover != NULL) {
> -    CopyMem (&Mode->PxeDiscover, NewPxeDiscover, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  if (NewPxeReply != NULL) {
> -    CopyMem (&Mode->PxeReply, NewPxeReply, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  if (NewPxeBisReply != NULL) {
> -    CopyMem (&Mode->PxeBisReply, NewPxeBisReply, sizeof
> (EFI_PXE_BASE_CODE_PACKET));
> -  }
> -
> -  return EFI_SUCCESS;
> -}
> -
> -EFI_PXE_BASE_CODE_PROTOCOL  mPxeBcProtocolTemplate = {
> -  EFI_PXE_BASE_CODE_PROTOCOL_REVISION,
> -  EfiPxeBcStart,
> -  EfiPxeBcStop,
> -  EfiPxeBcDhcp,
> -  EfiPxeBcDiscover,
> -  EfiPxeBcMtftp,
> -  EfiPxeBcUdpWrite,
> -  EfiPxeBcUdpRead,
> -  EfiPxeBcSetIpFilter,
> -  EfiPxeBcArp,
> -  EfiPxeBcSetParameters,
> -  EfiPxeBcSetStationIP,
> -  EfiPxeBcSetPackets,
> -  NULL
> -};
> -
> -/**
> -  Callback function that is invoked when the PXE Base Code Protocol is about to
> transmit, has
> -  received, or is waiting to receive a packet.
> -
> -  This function is invoked when the PXE Base Code Protocol is about to transmit,
> has received,
> -  or is waiting to receive a packet. Parameters Function and Received specify
> the type of event.
> -  Parameters PacketLen and Packet specify the packet that generated the event.
> If these fields
> -  are zero and NULL respectively, then this is a status update callback. If the
> operation specified
> -  by Function is to continue, then CALLBACK_STATUS_CONTINUE should be
> returned. If the operation
> -  specified by Function should be aborted, then CALLBACK_STATUS_ABORT
> should be returned. Due to
> -  the polling nature of UEFI device drivers, a callback function should not
> execute for more than 5 ms.
> -  The SetParameters() function must be called after a Callback Protocol is
> installed to enable the
> -  use of callbacks.
> -
> -  @param  This                  Pointer to the
> EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL instance.
> -  @param  Function              The PXE Base Code Protocol function that is waiting
> for an event.
> -  @param  Received              TRUE if the callback is being invoked due to a
> receive event. FALSE if
> -                                the callback is being invoked due to a transmit event.
> -  @param  PacketLength          The length, in bytes, of Packet. This field will have
> a value of zero if
> -                                this is a wait for receive event.
> -  @param  PacketPtr             If Received is TRUE, a pointer to the packet that
> was just received;
> -                                otherwise a pointer to the packet that is about to be
> transmitted.
> -
> -  @retval EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE if Function
> specifies a continue operation
> -  @retval EFI_PXE_BASE_CODE_CALLBACK_STATUS_ABORT    if Function
> specifies an abort operation
> -
> -**/
> -EFI_PXE_BASE_CODE_CALLBACK_STATUS
> -EFIAPI
> -EfiPxeLoadFileCallback (
> -  IN EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL  * This,
> -  IN EFI_PXE_BASE_CODE_FUNCTION           Function,
> -  IN BOOLEAN                              Received,
> -  IN UINT32                               PacketLength,
> -  IN EFI_PXE_BASE_CODE_PACKET             * PacketPtr OPTIONAL
> -  )
> -{
> -  EFI_INPUT_KEY Key;
> -  EFI_STATUS    Status;
> -
> -  //
> -  // Catch Ctrl-C or ESC to abort.
> -  //
> -  Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
> -
> -  if (!EFI_ERROR (Status)) {
> -
> -    if (Key.ScanCode == SCAN_ESC || Key.UnicodeChar == (0x1F & 'c')) {
> -
> -      return EFI_PXE_BASE_CODE_CALLBACK_STATUS_ABORT;
> -    }
> -  }
> -  //
> -  // No print if receive packet
> -  //
> -  if (Received) {
> -    return EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE;
> -  }
> -  //
> -  // Print only for three functions
> -  //
> -  switch (Function) {
> -
> -  case EFI_PXE_BASE_CODE_FUNCTION_MTFTP:
> -    //
> -    // Print only for open MTFTP packets, not every MTFTP packets
> -    //
> -    if (PacketLength != 0 && PacketPtr != NULL) {
> -      if (PacketPtr->Raw[0x1C] != 0x00 || PacketPtr->Raw[0x1D] != 0x01) {
> -        return EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE;
> -      }
> -    }
> -    break;
> -
> -  case EFI_PXE_BASE_CODE_FUNCTION_DHCP:
> -  case EFI_PXE_BASE_CODE_FUNCTION_DISCOVER:
> -    break;
> -
> -  default:
> -    return EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE;
> -  }
> -
> -  if (PacketLength != 0 && PacketPtr != NULL) {
> -    //
> -    // Print '.' when transmit a packet
> -    //
> -    AsciiPrint (".");
> -
> -  }
> -
> -  return EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE;
> -}
> -
> -EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL mPxeBcCallBackTemplate = {
> -  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL_REVISION,
> -  EfiPxeLoadFileCallback
> -};
> -
> -
> -/**
> -  Find the boot file.
> -
> -  @param  Private      Pointer to PxeBc private data.
> -  @param  BufferSize   Pointer to buffer size.
> -  @param  Buffer       Pointer to buffer.
> -
> -  @retval EFI_SUCCESS          Discover the boot file successfully.
> -  @retval EFI_TIMEOUT          The TFTP/MTFTP operation timed out.
> -  @retval EFI_ABORTED          PXE bootstrap server, so local boot need abort.
> -  @retval EFI_BUFFER_TOO_SMALL The buffer is too small to load the boot file.
> -
> -**/
> -EFI_STATUS
> -DiscoverBootFile (
> -  IN     PXEBC_PRIVATE_DATA  *Private,
> -  IN OUT UINT64              *BufferSize,
> -  IN     VOID                *Buffer
> -  )
> -{
> -  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
> -  EFI_PXE_BASE_CODE_MODE      *Mode;
> -  EFI_STATUS                  Status;
> -  UINT16                      Type;
> -  UINT16                      Layer;
> -  BOOLEAN                     UseBis;
> -  PXEBC_CACHED_DHCP4_PACKET   *Packet;
> -  UINT16                      Value;
> -
> -  PxeBc = &Private->PxeBc;
> -  Mode  = PxeBc->Mode;
> -  Type  = EFI_PXE_BASE_CODE_BOOT_TYPE_BOOTSTRAP;
> -  Layer = EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL;
> -
> -  //
> -  // do DHCP.
> -  //
> -  Status = PxeBc->Dhcp (PxeBc, TRUE);
> -  if (EFI_ERROR (Status)) {
> -    return Status;
> -  }
> -
> -  //
> -  // Select a boot server
> -  //
> -  Status = PxeBcSelectBootPrompt (Private);
> -
> -  if (Status == EFI_SUCCESS) {
> -    Status = PxeBcSelectBootMenu (Private, &Type, TRUE);
> -  } else if (Status == EFI_TIMEOUT) {
> -    Status = PxeBcSelectBootMenu (Private, &Type, FALSE);
> -  }
> -
> -  if (!EFI_ERROR (Status)) {
> -
> -    if (Type == EFI_PXE_BASE_CODE_BOOT_TYPE_BOOTSTRAP) {
> -      //
> -      // Local boot(PXE bootstrap server) need abort
> -      //
> -      return EFI_ABORTED;
> -    }
> -
> -    UseBis  = (BOOLEAN) (Mode->BisSupported && Mode->BisDetected);
> -    Status  = PxeBc->Discover (PxeBc, Type, &Layer, UseBis, NULL);
> -    if (EFI_ERROR (Status)) {
> -      return Status;
> -    }
> -  }
> -
> -  *BufferSize = 0;
> -
> -  //
> -  // Get bootfile name and (m)tftp server ip addresss
> -  //
> -  if (Mode->PxeReplyReceived) {
> -    Packet = &Private->PxeReply;
> -  } else if (Mode->ProxyOfferReceived) {
> -    Packet = &Private->ProxyOffer;
> -  } else {
> -    Packet = &Private->Dhcp4Ack;
> -  }
> -
> -  //
> -  // Use siaddr(next server) in DHCPOFFER packet header, if zero, use option
> 54(server identifier)
> -  // in DHCPOFFER packet.
> -  // (It does not comply with PXE Spec, Ver2.1)
> -  //
> -  if (EFI_IP4_EQUAL (&Packet->Packet.Offer.Dhcp4.Header.ServerAddr,
> &mZeroIp4Addr)) {
> -    CopyMem (
> -      &Private->ServerIp,
> -      Packet->Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_SERVER_ID]->Data,
> -      sizeof (EFI_IPv4_ADDRESS)
> -      );
> -  } else {
> -    CopyMem (
> -      &Private->ServerIp,
> -      &Packet->Packet.Offer.Dhcp4.Header.ServerAddr,
> -      sizeof (EFI_IPv4_ADDRESS)
> -      );
> -  }
> -  if (Private->ServerIp.Addr[0] == 0) {
> -    return EFI_DEVICE_ERROR;
> -  }
> -
> -  ASSERT (Packet->Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] !=
> NULL);
> -
> -  //
> -  // bootlfile name
> -  //
> -  Private->BootFileName = (CHAR8 *) (Packet-
> >Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data);
> -
> -  if (Packet->Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE_LEN] != NULL)
> {
> -    //
> -    // Already have the bootfile length option, compute the file size
> -    //
> -    CopyMem (&Value, Packet-
> >Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_BOOTFILE_LEN]->Data, sizeof
> (Value));
> -    Value       = NTOHS (Value);
> -    *BufferSize = 512 * Value;
> -    Status      = EFI_BUFFER_TOO_SMALL;
> -  } else {
> -    //
> -    // Get the bootfile size from tftp
> -    //
> -    Status = PxeBc->Mtftp (
> -                      PxeBc,
> -                      EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE,
> -                      Buffer,
> -                      FALSE,
> -                      BufferSize,
> -                      &Private->BlockSize,
> -                      &Private->ServerIp,
> -                      (UINT8 *) Private->BootFileName,
> -                      NULL,
> -                      FALSE
> -                      );
> -  }
> -
> -  Private->FileSize = (UINTN) *BufferSize;
> -
> -  //
> -  // Display all the information: boot server address, boot file name and boot
> file size.
> -  //
> -  AsciiPrint ("\n  Server IP address is ");
> -  PxeBcShowIp4Addr (&Private->ServerIp.v4);
> -  AsciiPrint ("\n  NBP filename is %a", Private->BootFileName);
> -  AsciiPrint ("\n  NBP filesize is %d Bytes", Private->FileSize);
> -
> -  return Status;
> -}
> -
> -/**
> -  Causes the driver to load a specified file.
> -
> -  @param  This                  Protocol instance pointer.
> -  @param  FilePath              The device specific path of the file to load.
> -  @param  BootPolicy            If TRUE, indicates that the request originates from
> the
> -                                boot manager is attempting to load FilePath as a boot
> -                                selection. If FALSE, then FilePath must match as exact file
> -                                to be loaded.
> -  @param  BufferSize            On input the size of Buffer in bytes. On output with
> a return
> -                                code of EFI_SUCCESS, the amount of data transferred to
> -                                Buffer. On output with a return code of
> EFI_BUFFER_TOO_SMALL,
> -                                the size of Buffer required to retrieve the requested file.
> -  @param  Buffer                The memory buffer to transfer the file to. IF Buffer is
> NULL,
> -                                then no the size of the requested file is returned in
> -                                BufferSize.
> -
> -  @retval EFI_SUCCESS                 The file was loaded.
> -  @retval EFI_UNSUPPORTED             The device does not support the provided
> BootPolicy
> -  @retval EFI_INVALID_PARAMETER       FilePath is not a valid device path, or
> -                                      BufferSize is NULL.
> -  @retval EFI_NO_MEDIA                No medium was present to load the file.
> -  @retval EFI_DEVICE_ERROR            The file was not loaded due to a device
> error.
> -  @retval EFI_NO_RESPONSE             The remote system did not respond.
> -  @retval EFI_NOT_FOUND               The file was not found.
> -  @retval EFI_ABORTED                 The file load process was manually cancelled.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeLoadFile (
> -  IN EFI_LOAD_FILE_PROTOCOL           * This,
> -  IN EFI_DEVICE_PATH_PROTOCOL         * FilePath,
> -  IN BOOLEAN                          BootPolicy,
> -  IN OUT UINTN                        *BufferSize,
> -  IN VOID                             *Buffer OPTIONAL
> -  )
> -{
> -  PXEBC_PRIVATE_DATA          *Private;
> -  EFI_PXE_BASE_CODE_PROTOCOL  *PxeBc;
> -  BOOLEAN                     NewMakeCallback;
> -  EFI_STATUS                  Status;
> -  UINT64                      TmpBufSize;
> -  EFI_STATUS                  MediaStatus;
> -
> -  if (FilePath == NULL || !IsDevicePathEnd (FilePath)) {
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  Private         = PXEBC_PRIVATE_DATA_FROM_LOADFILE (This);
> -  PxeBc           = &Private->PxeBc;
> -  NewMakeCallback = FALSE;
> -  Status          = EFI_DEVICE_ERROR;
> -
> -  if (This == NULL || BufferSize == NULL) {
> -
> -    return EFI_INVALID_PARAMETER;
> -  }
> -
> -  //
> -  // Only support BootPolicy
> -  //
> -  if (!BootPolicy) {
> -    return EFI_UNSUPPORTED;
> -  }
> -
> -  //
> -  // Check media status before PXE start
> -  //
> -  MediaStatus = EFI_SUCCESS;
> -  NetLibDetectMediaWaitTimeout (Private->Controller,
> PXEBC_CHECK_MEDIA_WAITING_TIME, &MediaStatus);
> -  if (MediaStatus != EFI_SUCCESS) {
> -    return EFI_NO_MEDIA;
> -  }
> -
> -  Status = PxeBc->Start (PxeBc, FALSE);
> -  if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
> -    return Status;
> -  }
> -
> -  Status = gBS->HandleProtocol (
> -                  Private->Controller,
> -                  &gEfiPxeBaseCodeCallbackProtocolGuid,
> -                  (VOID **) &Private->PxeBcCallback
> -                  );
> -  if (Status == EFI_UNSUPPORTED) {
> -
> -    CopyMem (&Private->LoadFileCallback, &mPxeBcCallBackTemplate, sizeof
> (Private->LoadFileCallback));
> -
> -    Status = gBS->InstallProtocolInterface (
> -                    &Private->Controller,
> -                    &gEfiPxeBaseCodeCallbackProtocolGuid,
> -                    EFI_NATIVE_INTERFACE,
> -                    &Private->LoadFileCallback
> -                    );
> -
> -    NewMakeCallback = (BOOLEAN) (Status == EFI_SUCCESS);
> -
> -    Status          = PxeBc->SetParameters (PxeBc, NULL, NULL, NULL, NULL,
> &NewMakeCallback);
> -    if (EFI_ERROR (Status)) {
> -      PxeBc->Stop (PxeBc);
> -      return Status;
> -    }
> -  }
> -
> -  if (Private->FileSize == 0) {
> -    TmpBufSize  = 0;
> -    Status      = DiscoverBootFile (Private, &TmpBufSize, Buffer);
> -
> -    if (sizeof (UINTN) < sizeof (UINT64) && (TmpBufSize > 0xFFFFFFFF)) {
> -      Status = EFI_DEVICE_ERROR;
> -    } else if (TmpBufSize > 0 && *BufferSize >= (UINTN) TmpBufSize && Buffer !=
> NULL) {
> -      AsciiPrint ("\n Downloading NBP file...\n");
> -      *BufferSize = (UINTN) TmpBufSize;
> -      Status = PxeBc->Mtftp (
> -                        PxeBc,
> -                        EFI_PXE_BASE_CODE_TFTP_READ_FILE,
> -                        Buffer,
> -                        FALSE,
> -                        &TmpBufSize,
> -                        &Private->BlockSize,
> -                        &Private->ServerIp,
> -                        (UINT8 *) Private->BootFileName,
> -                        NULL,
> -                        FALSE
> -                        );
> -    } else if (TmpBufSize > 0) {
> -      *BufferSize = (UINTN) TmpBufSize;
> -      Status      = EFI_BUFFER_TOO_SMALL;
> -    }
> -  } else if (Buffer == NULL || Private->FileSize > *BufferSize) {
> -    *BufferSize = Private->FileSize;
> -    Status      = EFI_BUFFER_TOO_SMALL;
> -  } else {
> -    //
> -    // Download the file.
> -    //
> -    AsciiPrint ("\n Downloading NBP file...\n");
> -    TmpBufSize = (UINT64) (*BufferSize);
> -    Status = PxeBc->Mtftp (
> -                      PxeBc,
> -                      EFI_PXE_BASE_CODE_TFTP_READ_FILE,
> -                      Buffer,
> -                      FALSE,
> -                      &TmpBufSize,
> -                      &Private->BlockSize,
> -                      &Private->ServerIp,
> -                      (UINT8 *) Private->BootFileName,
> -                      NULL,
> -                      FALSE
> -                      );
> -  }
> -  //
> -  // If we added a callback protocol, now is the time to remove it.
> -  //
> -  if (NewMakeCallback) {
> -
> -    NewMakeCallback = FALSE;
> -
> -    PxeBc->SetParameters (PxeBc, NULL, NULL, NULL, NULL,
> &NewMakeCallback);
> -
> -    gBS->UninstallProtocolInterface (
> -          Private->Controller,
> -          &gEfiPxeBaseCodeCallbackProtocolGuid,
> -          &Private->LoadFileCallback
> -          );
> -  }
> -
> -  //
> -  // Check download status
> -  //
> -  if (Status == EFI_SUCCESS) {
> -    AsciiPrint ("\n  NBP file downloaded successfully.\n");
> -    //
> -    // The DHCP4 can have only one configured child instance so we need to stop
> -    // reset the DHCP4 child before we return. Otherwise the other programs
> which
> -    // also need to use DHCP4 will be impacted.
> -    // The functionality of PXE Base Code protocol will not be stopped,
> -    // when downloading is successfully.
> -    //
> -    Private->Dhcp4->Stop (Private->Dhcp4);
> -    Private->Dhcp4->Configure (Private->Dhcp4, NULL);
> -    return EFI_SUCCESS;
> -
> -  } else if (Status == EFI_BUFFER_TOO_SMALL) {
> -    if (Buffer != NULL) {
> -      AsciiPrint ("PXE-E05: Download buffer is smaller than requested file.\n");
> -    } else {
> -      //
> -      // The functionality of PXE Base Code protocol will not be stopped.
> -      //
> -      return Status;
> -    }
> -
> -  } else if (Status == EFI_DEVICE_ERROR) {
> -    AsciiPrint ("PXE-E07: Network device error.\n");
> -
> -  } else if (Status == EFI_OUT_OF_RESOURCES) {
> -    AsciiPrint ("PXE-E09: Could not allocate I/O buffers.\n");
> -
> -  } else if (Status == EFI_NO_MEDIA) {
> -    AsciiPrint ("PXE-E12: Could not detect network connection.\n");
> -
> -  } else if (Status == EFI_NO_RESPONSE) {
> -    AsciiPrint ("PXE-E16: No offer received.\n");
> -
> -  } else if (Status == EFI_TIMEOUT) {
> -    AsciiPrint ("PXE-E18: Server response timeout.\n");
> -
> -  } else if (Status == EFI_ABORTED) {
> -    AsciiPrint ("PXE-E21: Remote boot cancelled.\n");
> -
> -  } else if (Status == EFI_ICMP_ERROR) {
> -    AsciiPrint ("PXE-E22: Client received ICMP error from server.\n");
> -
> -  } else if (Status == EFI_TFTP_ERROR) {
> -    AsciiPrint ("PXE-E23: Client received TFTP error from server.\n");
> -
> -  } else {
> -    AsciiPrint ("PXE-E99: Unexpected network error.\n");
> -  }
> -
> -  PxeBc->Stop (PxeBc);
> -
> -  return Status;
> -}
> -
> -EFI_LOAD_FILE_PROTOCOL  mLoadFileProtocolTemplate = { EfiPxeLoadFile };
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
> deleted file mode 100644
> index 88767c8394ab..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
> +++ /dev/null
> @@ -1,454 +0,0 @@
> -/** @file
> -  PxeBc MTFTP functions.
> -
> -Copyright (c) 2007 - 2018, 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.
> -
> -**/
> -
> -#include "PxeBcImpl.h"
> -
> -CHAR8 *mMtftpOptions[PXE_MTFTP_OPTION_MAXIMUM_INDEX] = {
> -  "blksize",
> -  "timeout",
> -  "tsize",
> -  "multicast"
> -};
> -
> -
> -/**
> -  This is a callback function when packets received/transmitted in Mtftp driver.
> -
> -  A callback function that is provided by the caller to intercept
> -  the EFI_MTFTP4_OPCODE_DATA or EFI_MTFTP4_OPCODE_DATA8 packets
> processed in the
> -  EFI_MTFTP4_PROTOCOL.ReadFile() function, and alternatively to intercept
> -  EFI_MTFTP4_OPCODE_OACK or EFI_MTFTP4_OPCODE_ERROR packets during
> a call to
> -  EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile() or ReadDirectory().
> -
> -  @param  This           Pointer to Mtftp protocol instance
> -  @param  Token          Pointer to Mtftp token
> -  @param  PacketLen      Length of Mtftp packet
> -  @param  Packet         Pointer to Mtftp packet
> -
> -  @retval EFI_SUCCESS    Operation sucess
> -  @retval EFI_ABORTED    Abort transfer process
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcCheckPacket (
> -  IN EFI_MTFTP4_PROTOCOL        *This,
> -  IN EFI_MTFTP4_TOKEN           *Token,
> -  IN UINT16                     PacketLen,
> -  IN EFI_MTFTP4_PACKET          *Packet
> -  )
> -{
> -  PXEBC_PRIVATE_DATA                  *Private;
> -  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL *Callback;
> -  EFI_STATUS                          Status;
> -
> -  Private   = (PXEBC_PRIVATE_DATA *) Token->Context;
> -  Callback  = Private->PxeBcCallback;
> -  Status    = EFI_SUCCESS;
> -
> -  if (Packet->OpCode == EFI_MTFTP4_OPCODE_ERROR) {
> -    Private->Mode.TftpErrorReceived = TRUE;
> -    Private->Mode.TftpError.ErrorCode = (UINT8) Packet->Error.ErrorCode;
> -    AsciiStrnCpyS (Private->Mode.TftpError.ErrorString,
> PXE_MTFTP_ERROR_STRING_LENGTH, (CHAR8 *) Packet->Error.ErrorMessage,
> PXE_MTFTP_ERROR_STRING_LENGTH - 1);
> -    Private->Mode.TftpError.ErrorString[PXE_MTFTP_ERROR_STRING_LENGTH -
> 1] = '\0';
> -  }
> -
> -  if (Callback != NULL) {
> -
> -    Status = Callback->Callback (
> -                        Callback,
> -                        Private->Function,
> -                        TRUE,
> -                        PacketLen,
> -                        (EFI_PXE_BASE_CODE_PACKET *) Packet
> -                        );
> -    if (Status != EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE) {
> -
> -      Status = EFI_ABORTED;
> -    } else {
> -
> -      Status = EFI_SUCCESS;
> -    }
> -  }
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  This function is to get size of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferSize     Pointer to buffer size
> -
> -  @retval EFI_SUCCESS        Get the size of file success
> -  @retval EFI_NOT_FOUND      Parse the tftp ptions failed.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval Other              Has not get the size of the file.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpGetFileSize (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN UINTN                      *BlockSize,
> -  IN OUT UINT64                 *BufferSize
> -  )
> -{
> -  EFI_MTFTP4_PROTOCOL *Mtftp4;
> -  EFI_MTFTP4_OPTION   ReqOpt[2];
> -  EFI_MTFTP4_PACKET   *Packet;
> -  EFI_MTFTP4_OPTION   *Option;
> -  UINT32              PktLen;
> -  UINT8               OptBuf[128];
> -  UINT32              OptCnt;
> -  EFI_STATUS          Status;
> -
> -  *BufferSize               = 0;
> -  Status                    = EFI_DEVICE_ERROR;
> -  Mtftp4                    = Private->Mtftp4;
> -  Packet                    = NULL;
> -  Option                    = NULL;
> -  PktLen                    = 0;
> -  OptCnt                    = 1;
> -  Config->InitialServerPort = PXEBC_BS_DOWNLOAD_PORT;
> -
> -  Status = Mtftp4->Configure (Mtftp4, Config);
> -  if (EFI_ERROR (Status)) {
> -
> -    return Status;
> -  }
> -
> -  ReqOpt[0].OptionStr =
> (UINT8*)mMtftpOptions[PXE_MTFTP_OPTION_TSIZE_INDEX];
> -  UtoA10 (0, (CHAR8 *) OptBuf, PXE_MTFTP_OPTBUF_MAXNUM_INDEX);
> -  ReqOpt[0].ValueStr = OptBuf;
> -
> -  if (BlockSize != NULL) {
> -    ReqOpt[1].OptionStr =
> (UINT8*)mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];
> -    ReqOpt[1].ValueStr  = ReqOpt[0].ValueStr + AsciiStrLen ((CHAR8 *)
> ReqOpt[0].ValueStr) + 1;
> -    UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[1].ValueStr,
> PXE_MTFTP_OPTBUF_MAXNUM_INDEX - (AsciiStrLen ((CHAR8 *)
> ReqOpt[0].ValueStr) + 1));
> -    OptCnt++;
> -  }
> -
> -  Status = Mtftp4->GetInfo (
> -                    Mtftp4,
> -                    NULL,
> -                    Filename,
> -                    NULL,
> -                    (UINT8) OptCnt,
> -                    ReqOpt,
> -                    &PktLen,
> -                    &Packet
> -                    );
> -
> -  if (EFI_ERROR (Status)) {
> -    if (Status == EFI_TFTP_ERROR) {
> -      Private->Mode.TftpErrorReceived = TRUE;
> -      Private->Mode.TftpError.ErrorCode = (UINT8) Packet->Error.ErrorCode;
> -      AsciiStrnCpyS (
> -        Private->Mode.TftpError.ErrorString,
> -        PXE_MTFTP_ERROR_STRING_LENGTH,
> -        (CHAR8 *) Packet->Error.ErrorMessage,
> -        PXE_MTFTP_ERROR_STRING_LENGTH - 1
> -        );
> -      Private->Mode.TftpError.ErrorString[PXE_MTFTP_ERROR_STRING_LENGTH
> - 1] = '\0';
> -    }
> -    goto ON_ERROR;
> -  }
> -
> -  OptCnt = 0;
> -
> -  Status = Mtftp4->ParseOptions (
> -                    Mtftp4,
> -                    PktLen,
> -                    Packet,
> -                    (UINT32 *) &OptCnt,
> -                    &Option
> -                    );
> -
> -  if (EFI_ERROR (Status)) {
> -
> -    goto ON_ERROR;
> -  }
> -
> -  Status = EFI_NOT_FOUND;
> -
> -  while (OptCnt != 0) {
> -
> -    if (AsciiStrnCmp ((CHAR8 *) Option[OptCnt - 1].OptionStr, "tsize", 5) == 0) {
> -
> -      *BufferSize = AtoU64 (Option[OptCnt - 1].ValueStr);
> -      Status      = EFI_SUCCESS;
> -    }
> -
> -    OptCnt--;
> -  }
> -
> -  FreePool (Option);
> -
> -ON_ERROR:
> -
> -  if (Packet != NULL) {
> -    FreePool (Packet);
> -  }
> -
> -  Mtftp4->Configure (Mtftp4, NULL);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  This function is to get data of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferPtr      Pointer to buffer
> -  @param  BufferSize     Pointer to buffer size
> -  @param  DontUseBuffer  Indicate whether with a receive buffer
> -
> -  @retval EFI_SUCCESS        Read the data success from the special file.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Read data from file failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpReadFile (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN UINTN                      *BlockSize,
> -  IN UINT8                      *BufferPtr,
> -  IN OUT UINT64                 *BufferSize,
> -  IN BOOLEAN                    DontUseBuffer
> -  )
> -{
> -  EFI_MTFTP4_PROTOCOL *Mtftp4;
> -  EFI_MTFTP4_TOKEN    Token;
> -  EFI_MTFTP4_OPTION   ReqOpt[1];
> -  UINT32              OptCnt;
> -  UINT8               OptBuf[128];
> -  EFI_STATUS          Status;
> -
> -  Status                    = EFI_DEVICE_ERROR;
> -  Mtftp4                    = Private->Mtftp4;
> -  OptCnt                    = 0;
> -  Config->InitialServerPort = PXEBC_BS_DOWNLOAD_PORT;
> -
> -  Status = Mtftp4->Configure (Mtftp4, Config);
> -  if (EFI_ERROR (Status)) {
> -
> -    return Status;
> -  }
> -
> -  if (BlockSize != NULL) {
> -
> -    ReqOpt[0].OptionStr = (UINT8*)
> mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];
> -    ReqOpt[0].ValueStr  = OptBuf;
> -    UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr,
> PXE_MTFTP_OPTBUF_MAXNUM_INDEX);
> -    OptCnt++;
> -  }
> -
> -  Token.Event         = NULL;
> -  Token.OverrideData  = NULL;
> -  Token.Filename      = Filename;
> -  Token.ModeStr       = NULL;
> -  Token.OptionCount   = OptCnt;
> -  Token.OptionList    = ReqOpt;
> -  Token.Context       = Private;
> -
> -  if (DontUseBuffer) {
> -    Token.BufferSize  = 0;
> -    Token.Buffer      = NULL;
> -  } else {
> -    Token.BufferSize  = *BufferSize;
> -    Token.Buffer      = BufferPtr;
> -  }
> -
> -  Token.CheckPacket     = PxeBcCheckPacket;
> -  Token.TimeoutCallback = NULL;
> -  Token.PacketNeeded    = NULL;
> -
> -  Status = Mtftp4->ReadFile (Mtftp4, &Token);
> -
> -  *BufferSize = Token.BufferSize;
> -
> -  Mtftp4->Configure (Mtftp4, NULL);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  This function is put data of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  Overwrite      Indicate whether with overwrite attribute
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferPtr      Pointer to buffer
> -  @param  BufferSize     Pointer to buffer size
> -
> -  @retval EFI_SUCCESS        Write the data success into the special file.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Write data into file failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpWriteFile (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN BOOLEAN                    Overwrite,
> -  IN UINTN                      *BlockSize,
> -  IN UINT8                      *BufferPtr,
> -  IN OUT UINT64                 *BufferSize
> -  )
> -{
> -  EFI_MTFTP4_PROTOCOL *Mtftp4;
> -  EFI_MTFTP4_TOKEN    Token;
> -  EFI_MTFTP4_OPTION   ReqOpt[1];
> -  UINT32              OptCnt;
> -  UINT8               OptBuf[128];
> -  EFI_STATUS          Status;
> -
> -  Status                    = EFI_DEVICE_ERROR;
> -  Mtftp4                    = Private->Mtftp4;
> -  OptCnt                    = 0;
> -  Config->InitialServerPort = PXEBC_BS_DOWNLOAD_PORT;
> -
> -  Status  = Mtftp4->Configure (Mtftp4, Config);
> -  if (EFI_ERROR (Status)) {
> -
> -    return Status;
> -  }
> -
> -  if (BlockSize != NULL) {
> -
> -    ReqOpt[0].OptionStr = (UINT8*)
> mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];
> -    ReqOpt[0].ValueStr  = OptBuf;
> -    UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr,
> PXE_MTFTP_OPTBUF_MAXNUM_INDEX);
> -    OptCnt++;
> -  }
> -
> -  Token.Event           = NULL;
> -  Token.OverrideData    = NULL;
> -  Token.Filename        = Filename;
> -  Token.ModeStr         = NULL;
> -  Token.OptionCount     = OptCnt;
> -  Token.OptionList      = ReqOpt;
> -  Token.BufferSize      = *BufferSize;
> -  Token.Buffer          = BufferPtr;
> -  Token.CheckPacket     = PxeBcCheckPacket;
> -  Token.TimeoutCallback = NULL;
> -  Token.PacketNeeded    = NULL;
> -
> -  Status      = Mtftp4->WriteFile (Mtftp4, &Token);
> -  *BufferSize = Token.BufferSize;
> -
> -  Mtftp4->Configure (Mtftp4, NULL);
> -
> -  return Status;
> -}
> -
> -
> -/**
> -  This function is to get data(file) from a directory(may be a server) by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data.
> -  @param  Config         Pointer to Mtftp configuration data.
> -  @param  Filename       Pointer to file name.
> -  @param  BlockSize      Pointer to block size.
> -  @param  BufferPtr      Pointer to buffer.
> -  @param  BufferSize     Pointer to buffer size.
> -  @param  DontUseBuffer  Indicate whether with a receive buffer.
> -
> -  @retval EFI_SUCCES         Get the data from the file included in directory
> success.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Operation failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpReadDirectory (
> -  IN PXEBC_PRIVATE_DATA            *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA        *Config,
> -  IN UINT8                         *Filename,
> -  IN UINTN                         *BlockSize,
> -  IN UINT8                         *BufferPtr,
> -  IN OUT UINT64                    *BufferSize,
> -  IN BOOLEAN                       DontUseBuffer
> -  )
> -{
> -  EFI_MTFTP4_PROTOCOL *Mtftp4;
> -  EFI_MTFTP4_TOKEN    Token;
> -  EFI_MTFTP4_OPTION   ReqOpt[1];
> -  UINT32              OptCnt;
> -  UINT8               OptBuf[128];
> -  EFI_STATUS          Status;
> -
> -  Status                    = EFI_DEVICE_ERROR;
> -  Mtftp4                    = Private->Mtftp4;
> -  OptCnt                    = 0;
> -  Config->InitialServerPort = PXEBC_BS_DOWNLOAD_PORT;
> -
> -  Status = Mtftp4->Configure (Mtftp4, Config);
> -  if (EFI_ERROR (Status)) {
> -
> -    return Status;
> -  }
> -
> -  if (BlockSize != NULL) {
> -
> -    ReqOpt[0].OptionStr = (UINT8*)
> mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];
> -    ReqOpt[0].ValueStr  = OptBuf;
> -    UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr,
> PXE_MTFTP_OPTBUF_MAXNUM_INDEX);
> -    OptCnt++;
> -  }
> -
> -  Token.Event         = NULL;
> -  Token.OverrideData  = NULL;
> -  Token.Filename      = Filename;
> -  Token.ModeStr       = NULL;
> -  Token.OptionCount   = OptCnt;
> -  Token.OptionList    = ReqOpt;
> -  Token.Context       = Private;
> -
> -  if (DontUseBuffer) {
> -    Token.BufferSize  = 0;
> -    Token.Buffer      = NULL;
> -  } else {
> -    Token.BufferSize  = *BufferSize;
> -    Token.Buffer      = BufferPtr;
> -  }
> -
> -  Token.CheckPacket     = PxeBcCheckPacket;
> -  Token.TimeoutCallback = NULL;
> -  Token.PacketNeeded    = NULL;
> -
> -  Status = Mtftp4->ReadDirectory (Mtftp4, &Token);
> -
> -  *BufferSize = Token.BufferSize;
> -
> -  Mtftp4->Configure (Mtftp4, NULL);
> -
> -  return Status;
> -}
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
> deleted file mode 100644
> index 1401ca5ec2fd..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
> +++ /dev/null
> @@ -1,221 +0,0 @@
> -/** @file
> -  Support routines for PxeBc.
> -
> -Copyright (c) 2007 - 2018, 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.
> -
> -**/
> -
> -
> -#include "PxeBcImpl.h"
> -
> -
> -/**
> -  The common notify function associated with various PxeBc events.
> -
> -  @param  Event     The event signaled.
> -  @param  Context   The context.
> -
> -**/
> -VOID
> -EFIAPI
> -PxeBcCommonNotify (
> -  IN EFI_EVENT           Event,
> -  IN VOID                *Context
> -  )
> -{
> -  *((BOOLEAN *) Context) = TRUE;
> -}
> -
> -
> -/**
> -  This function initialize(or configure) the Udp4Write instance.
> -
> -  @param  Udp4       Pointer to the EFI_UDP4_PROTOCOL instance.
> -  @param  StationIp  Pointer to the station ip address.
> -  @param  SubnetMask Pointer to the subnetmask of the station ip address.
> -  @param  Gateway    Pointer to the gateway ip address.
> -  @param  SrcPort    Pointer to the srouce port of the station.
> -  @param  Ttl        The time to live field of the IP header.
> -  @param  ToS        The type of service field of the IP header.
> -
> -  @retval EFI_SUCCESS           The configuration settings were set, changed, or
> reset successfully.
> -  @retval EFI_NO_MAPPING        When using a default address, configuration
> (DHCP, BOOTP,
> -                                RARP, etc.) is not finished yet.
> -  @retval EFI_INVALID_PARAMETER One or more following conditions are
> TRUE:
> -  @retval EFI_ALREADY_STARTED   The EFI UDPv4 Protocol instance is already
> started/configured
> -                                and must be stopped/reset before it can be reconfigured.
> -  @retval EFI_ACCESS_DENIED     UdpConfigData. AllowDuplicatePort is FALSE
> -                                and UdpConfigData.StationPort is already used by
> -                                other instance.
> -  @retval EFI_OUT_OF_RESOURCES  The EFI UDPv4 Protocol driver cannot
> allocate memory for this
> -                                EFI UDPv4 Protocol instance.
> -  @retval EFI_DEVICE_ERROR      An unexpected network or system error
> occurred and this instance
> -                                was not opened.
> -  @retval Others                Please examine the function Udp4->Routes(Udp4,
> FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway) returns.
> -
> -**/
> -EFI_STATUS
> -PxeBcConfigureUdpWriteInstance (
> -  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     UINT8          Ttl,
> -  IN     UINT8          ToS
> -  )
> -{
> -  EFI_UDP4_CONFIG_DATA  Udp4CfgData;
> -  EFI_STATUS            Status;
> -
> -  ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData));
> -
> -  Udp4CfgData.ReceiveTimeout = PXEBC_DEFAULT_LIFETIME;
> -  Udp4CfgData.TypeOfService  = ToS;
> -  Udp4CfgData.TimeToLive     = Ttl;
> -  Udp4CfgData.AllowDuplicatePort = TRUE;
> -
> -  CopyMem (&Udp4CfgData.StationAddress, StationIp, sizeof (*StationIp));
> -  CopyMem (&Udp4CfgData.SubnetMask, SubnetMask, sizeof (*SubnetMask));
> -
> -  Udp4CfgData.StationPort    = *SrcPort;
> -
> -  //
> -  // Reset the instance.
> -  //
> -  Udp4->Configure (Udp4, NULL);
> -
> -  Status = Udp4->Configure (Udp4, &Udp4CfgData);
> -  if (!EFI_ERROR (Status) && (Gateway->Addr[0] != 0)) {
> -    //
> -    // basic configuration OK, need to add the default route entry
> -    //
> -    Status = Udp4->Routes (Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr,
> Gateway);
> -    if (EFI_ERROR (Status)) {
> -      //
> -      // roll back
> -      //
> -      Udp4->Configure (Udp4, NULL);
> -    }
> -  }
> -
> -  if (!EFI_ERROR (Status) && (*SrcPort == 0)) {
> -    Udp4->GetModeData (Udp4, &Udp4CfgData, NULL, NULL, NULL);
> -    *SrcPort = Udp4CfgData.StationPort;
> -  }
> -
> -  return Status;
> -}
> -
> -/**
> -  This function is to display the IPv4 address.
> -
> -  @param[in]  Ip        The pointer to the IPv4 address.
> -
> -**/
> -VOID
> -PxeBcShowIp4Addr (
> -  IN EFI_IPv4_ADDRESS   *Ip
> -  )
> -{
> -  UINTN                 Index;
> -
> -  for (Index = 0; Index < 4; Index++) {
> -    AsciiPrint ("%d", Ip->Addr[Index]);
> -    if (Index < 3) {
> -      AsciiPrint (".");
> -    }
> -  }
> -}
> -
> -/**
> -  Convert number to ASCII value.
> -
> -  @param  Number              Numeric value to convert to decimal ASCII value.
> -  @param  Buffer              Buffer to place ASCII version of the Number.
> -  @param  Length              Length of Buffer.
> -
> -**/
> -VOID
> -CvtNum (
> -  IN UINTN  Number,
> -  IN UINT8  *Buffer,
> -  IN UINTN   Length
> -  )
> -{
> -  UINTN Remainder;
> -
> -  for (; Length > 0; Length--) {
> -    Remainder = Number % 10;
> -    Number /= 10;
> -    Buffer[Length - 1] = (UINT8) ('0' + Remainder);
> -  }
> -}
> -
> -
> -/**
> -  Convert unsigned int number to decimal number.
> -
> -  @param      Number         The unsigned int number will be converted.
> -  @param      Buffer         Pointer to the buffer to store the decimal number after
> transform.
> -  @param[in]  BufferSize     The maxsize of the buffer.
> -
> -  @return the length of the number after transform.
> -
> -**/
> -UINTN
> -UtoA10 (
> -  IN UINTN Number,
> -  IN CHAR8 *Buffer,
> -  IN UINTN BufferSize
> -  )
> -{
> -  UINTN Index;
> -  CHAR8 TempStr[64];
> -
> -  Index           = 63;
> -  TempStr[Index]  = 0;
> -
> -  do {
> -    Index--;
> -    TempStr[Index]  = (CHAR8) ('0' + (Number % 10));
> -    Number          = Number / 10;
> -  } while (Number != 0);
> -
> -  AsciiStrCpyS (Buffer, BufferSize, &TempStr[Index]);
> -
> -  return AsciiStrLen (Buffer);
> -}
> -
> -
> -/**
> -  Convert ASCII numeric string to a UINTN value.
> -
> -  @param  Buffer  Pointer to the 8-byte unsigned int value.
> -
> -  @return UINTN value of the ASCII string.
> -
> -**/
> -UINT64
> -AtoU64 (
> -  IN UINT8 *Buffer
> -  )
> -{
> -  UINT64  Value;
> -  UINT8   Character;
> -
> -  Value = 0;
> -  while ((Character = *Buffer++) != '\0') {
> -    Value = MultU64x32 (Value, 10) + (Character - '0');
> -  }
> -
> -  return Value;
> -}
> -
> diff --git a/MdeModulePkg/MdeModulePkg.dsc
> b/MdeModulePkg/MdeModulePkg.dsc
> index b787fb5692d3..5d042be3a862 100644
> --- a/MdeModulePkg/MdeModulePkg.dsc
> +++ b/MdeModulePkg/MdeModulePkg.dsc
> @@ -420,7 +420,6 @@ [Components]
>    MdeModulePkg/Library/DxeCapsuleLibFmp/DxeRuntimeCapsuleLib.inf
> 
>  [Components.IA32, Components.X64, Components.AARCH64]
> -  MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
>    MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf
>    MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
>    MdeModulePkg/Universal/EbcDxe/EbcDebugger.inf
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
> deleted file mode 100644
> index d8336c5e82e9..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
> +++ /dev/null
> @@ -1,502 +0,0 @@
> -/** @file
> -  Dhcp and Discover routines for PxeBc.
> -
> -Copyright (c) 2013, Red Hat, Inc.
> -Copyright (c) 2007 - 2018, 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_DHCP_H__
> -#define __EFI_PXEBC_DHCP_H__
> -
> -#define PXEBC_DHCP4_MAX_OPTION_NUM         16
> -#define PXEBC_DHCP4_MAX_OPTION_SIZE        312
> -#define PXEBC_DHCP4_MAX_PACKET_SIZE        (sizeof
> (EFI_PXE_BASE_CODE_PACKET))
> -
> -#define PXEBC_DHCP4_S_PORT                 67
> -#define PXEBC_DHCP4_C_PORT                 68
> -#define PXEBC_BS_DOWNLOAD_PORT             69
> -#define PXEBC_BS_DISCOVER_PORT             4011
> -
> -#define PXEBC_DHCP4_OPCODE_REQUEST         1
> -#define PXEBC_DHCP4_OPCODE_REPLY           2
> -#define PXEBC_DHCP4_MSG_TYPE_REQUEST       3
> -#define PXEBC_DHCP4_MAGIC                  0x63538263 // network byte order
> -
> -//
> -// Sub-Options in Dhcp Vendor Option
> -//
> -#define PXEBC_VENDOR_TAG_MTFTP_IP          1
> -#define PXEBC_VENDOR_TAG_MTFTP_CPORT       2
> -#define PXEBC_VENDOR_TAG_MTFTP_SPORT       3
> -#define PXEBC_VENDOR_TAG_MTFTP_TIMEOUT     4
> -#define PXEBC_VENDOR_TAG_MTFTP_DELAY       5
> -#define PXEBC_VENDOR_TAG_DISCOVER_CTRL     6
> -#define PXEBC_VENDOR_TAG_DISCOVER_MCAST    7
> -#define PXEBC_VENDOR_TAG_BOOT_SERVERS      8
> -#define PXEBC_VENDOR_TAG_BOOT_MENU         9
> -#define PXEBC_VENDOR_TAG_MENU_PROMPT       10
> -#define PXEBC_VENDOR_TAG_MCAST_ALLOC       11
> -#define PXEBC_VENDOR_TAG_CREDENTIAL_TYPES  12
> -#define PXEBC_VENDOR_TAG_BOOT_ITEM         71
> -
> -#define PXEBC_DHCP4_DISCOVER_INIT_TIMEOUT  4
> -#define PXEBC_DHCP4_DISCOVER_RETRIES       4
> -
> -#define PXEBC_MAX_MENU_NUM                 24
> -#define PXEBC_MAX_OFFER_NUM                16
> -
> -#define PXEBC_BOOT_REQUEST_TIMEOUT         1
> -#define PXEBC_BOOT_REQUEST_RETRIES         4
> -
> -#define PXEBC_DHCP4_OVERLOAD_FILE          1
> -#define PXEBC_DHCP4_OVERLOAD_SERVER_NAME   2
> -
> -//
> -// The array index of the DHCP4 option tag interested
> -//
> -#define PXEBC_DHCP4_TAG_INDEX_BOOTFILE_LEN 0
> -#define PXEBC_DHCP4_TAG_INDEX_VENDOR       1
> -#define PXEBC_DHCP4_TAG_INDEX_OVERLOAD     2
> -#define PXEBC_DHCP4_TAG_INDEX_MSG_TYPE     3
> -#define PXEBC_DHCP4_TAG_INDEX_SERVER_ID    4
> -#define PXEBC_DHCP4_TAG_INDEX_CLASS_ID     5
> -#define PXEBC_DHCP4_TAG_INDEX_BOOTFILE     6
> -#define PXEBC_DHCP4_TAG_INDEX_MAX          7
> -
> -//
> -// The type of DHCP OFFER, arranged by priority, PXE10 has the highest priority.
> -//
> -#define DHCP4_PACKET_TYPE_PXE10            0
> -#define DHCP4_PACKET_TYPE_WFM11A           1
> -#define DHCP4_PACKET_TYPE_BINL             2
> -#define DHCP4_PACKET_TYPE_DHCP_ONLY        3
> -#define DHCP4_PACKET_TYPE_BOOTP            4
> -#define DHCP4_PACKET_TYPE_MAX              5
> -
> -#define BIT(x)  (1 << x)
> -#define CTRL(x) (0x1F & (x))
> -
> -//
> -// WfM11a options
> -//
> -#define MTFTP_VENDOR_OPTION_BIT_MAP (BIT
> (PXEBC_VENDOR_TAG_MTFTP_IP) | \
> -                                     BIT (PXEBC_VENDOR_TAG_MTFTP_CPORT) | \
> -                                     BIT (PXEBC_VENDOR_TAG_MTFTP_SPORT) | \
> -                                     BIT (PXEBC_VENDOR_TAG_MTFTP_TIMEOUT) | \
> -                                     BIT (PXEBC_VENDOR_TAG_MTFTP_DELAY))
> -//
> -// Discoverty options
> -//
> -#define DISCOVER_VENDOR_OPTION_BIT_MAP  (BIT
> (PXEBC_VENDOR_TAG_DISCOVER_CTRL) | \
> -                                         BIT (PXEBC_VENDOR_TAG_DISCOVER_MCAST) | \
> -                                         BIT (PXEBC_VENDOR_TAG_BOOT_SERVERS) | \
> -                                         BIT (PXEBC_VENDOR_TAG_BOOT_MENU) | \
> -                                         BIT (PXEBC_VENDOR_TAG_MENU_PROMPT))
> -
> -#define IS_VALID_BOOT_PROMPT(x) \
> -  ((((x)[0]) & BIT (PXEBC_VENDOR_TAG_MENU_PROMPT)) == BIT
> (PXEBC_VENDOR_TAG_MENU_PROMPT))
> -
> -#define IS_VALID_BOOT_MENU(x) \
> -  ((((x)[0]) & BIT (PXEBC_VENDOR_TAG_BOOT_MENU)) == BIT
> (PXEBC_VENDOR_TAG_BOOT_MENU))
> -
> -#define IS_VALID_MTFTP_VENDOR_OPTION(x) \
> -    (((UINT32) ((x)[0]) & MTFTP_VENDOR_OPTION_BIT_MAP) ==
> MTFTP_VENDOR_OPTION_BIT_MAP)
> -
> -#define IS_VALID_DISCOVER_VENDOR_OPTION(x)  (((UINT32) ((x)[0]) &
> DISCOVER_VENDOR_OPTION_BIT_MAP) != 0)
> -
> -#define IS_VALID_CREDENTIAL_VENDOR_OPTION(x) \
> -    (((UINT32) ((x)[0]) & BIT (PXEBC_VENDOR_TAG_CREDENTIAL_TYPES)) == BIT
> (PXEBC_VENDOR_TAG_CREDENTIAL_TYPES))
> -
> -#define IS_VALID_BOOTITEM_VENDOR_OPTION(x) \
> -    (((UINT32) ((x)[PXEBC_VENDOR_TAG_BOOT_ITEM / 32]) & BIT
> (PXEBC_VENDOR_TAG_BOOT_ITEM % 32)) \
> -      == BIT (PXEBC_VENDOR_TAG_BOOT_ITEM % 32))
> -
> -#define IS_DISABLE_BCAST_DISCOVER(x)    (((x) & BIT (0)) == BIT (0))
> -#define IS_DISABLE_MCAST_DISCOVER(x)    (((x) & BIT (1)) == BIT (1))
> -#define IS_ENABLE_USE_SERVER_LIST(x)    (((x) & BIT (2)) == BIT (2))
> -#define IS_DISABLE_PROMPT_MENU(x)       (((x) & BIT (3)) == BIT (3))
> -
> -#define SET_VENDOR_OPTION_BIT_MAP(x, y) (((x)[(y) / 32]) = (UINT32) ((x)[(y) /
> 32]) | BIT ((y) % 32))
> -
> -#pragma pack(1)
> -typedef struct {
> -  UINT8 ParaList[135];
> -} PXEBC_DHCP4_OPTION_PARA;
> -
> -typedef struct {
> -  UINT16  Size;
> -} PXEBC_DHCP4_OPTION_MAX_MESG_SIZE;
> -
> -typedef struct {
> -  UINT8 Type;
> -  UINT8 MajorVer;
> -  UINT8 MinorVer;
> -} PXEBC_DHCP4_OPTION_UNDI;
> -
> -typedef struct {
> -  UINT8 Type;
> -} PXEBC_DHCP4_OPTION_MESG;
> -
> -typedef struct {
> -  UINT16  Type;
> -} PXEBC_DHCP4_OPTION_ARCH;
> -
> -#define DEFAULT_CLASS_ID_DATA "PXEClient:Arch:xxxxx:UNDI:003000"
> -#define DEFAULT_UNDI_TYPE     1
> -#define DEFAULT_UNDI_MAJOR    3
> -#define DEFAULT_UNDI_MINOR    0
> -
> -typedef struct {
> -  UINT8 ClassIdentifier[10];
> -  UINT8 ArchitecturePrefix[5];
> -  UINT8 ArchitectureType[5];
> -  UINT8 Lit3[1];
> -  UINT8 InterfaceName[4];
> -  UINT8 Lit4[1];
> -  UINT8 UndiMajor[3];
> -  UINT8 UndiMinor[3];
> -} PXEBC_DHCP4_OPTION_CLID;
> -
> -typedef struct {
> -  UINT8 Type;
> -  UINT8 Guid[16];
> -} PXEBC_DHCP4_OPTION_UUID;
> -
> -typedef struct {
> -  UINT16  Type;
> -  UINT16  Layer;
> -} PXEBC_OPTION_BOOT_ITEM;
> -
> -#pragma pack()
> -
> -typedef union {
> -  PXEBC_DHCP4_OPTION_PARA           *Para;
> -  PXEBC_DHCP4_OPTION_UNDI           *Undi;
> -  PXEBC_DHCP4_OPTION_ARCH           *Arch;
> -  PXEBC_DHCP4_OPTION_CLID           *Clid;
> -  PXEBC_DHCP4_OPTION_UUID           *Uuid;
> -  PXEBC_DHCP4_OPTION_MESG           *Mesg;
> -  PXEBC_DHCP4_OPTION_MAX_MESG_SIZE  *MaxMesgSize;
> -} PXEBC_DHCP4_OPTION_ENTRY;
> -
> -typedef struct {
> -  UINT16            Type;
> -  UINT8             IpCnt;
> -  EFI_IPv4_ADDRESS  IpAddr[1];
> -} PXEBC_BOOT_SVR_ENTRY;
> -
> -typedef struct {
> -  UINT16  Type;
> -  UINT8   DescLen;
> -  UINT8   DescStr[1];
> -} PXEBC_BOOT_MENU_ENTRY;
> -
> -typedef struct {
> -  UINT8 Timeout;
> -  UINT8 Prompt[1];
> -} PXEBC_MENU_PROMPT;
> -
> -typedef struct {
> -  UINT32                BitMap[8];
> -  EFI_IPv4_ADDRESS      MtftpIp;
> -  UINT16                MtftpCPort;
> -  UINT16                MtftpSPort;
> -  UINT8                 MtftpTimeout;
> -  UINT8                 MtftpDelay;
> -  UINT8                 DiscoverCtrl;
> -  EFI_IPv4_ADDRESS      DiscoverMcastIp;
> -  EFI_IPv4_ADDRESS      McastIpBase;
> -  UINT16                McastIpBlock;
> -  UINT16                McastIpRange;
> -  UINT16                BootSrvType;
> -  UINT16                BootSrvLayer;
> -  PXEBC_BOOT_SVR_ENTRY  *BootSvr;
> -  UINT8                 BootSvrLen;
> -  PXEBC_BOOT_MENU_ENTRY *BootMenu;
> -  UINT8                 BootMenuLen;
> -  PXEBC_MENU_PROMPT     *MenuPrompt;
> -  UINT8                 MenuPromptLen;
> -  UINT32                *CredType;
> -  UINT8                 CredTypeLen;
> -} PXEBC_VENDOR_OPTION;
> -
> -#define PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE  (OFFSET_OF
> (EFI_DHCP4_PACKET, Dhcp4) + PXEBC_DHCP4_MAX_PACKET_SIZE)
> -
> -typedef union {
> -  EFI_DHCP4_PACKET  Offer;
> -  EFI_DHCP4_PACKET  Ack;
> -  UINT8             Buffer[PXEBC_CACHED_DHCP4_PACKET_MAX_SIZE];
> -} PXEBC_DHCP4_PACKET;
> -
> -typedef struct {
> -  PXEBC_DHCP4_PACKET      Packet;
> -  BOOLEAN                 IsPxeOffer;
> -  UINT8                   OfferType;
> -  EFI_DHCP4_PACKET_OPTION
> *Dhcp4Option[PXEBC_DHCP4_TAG_INDEX_MAX];
> -  PXEBC_VENDOR_OPTION    PxeVendorOption;
> -} PXEBC_CACHED_DHCP4_PACKET;
> -
> -#define GET_NEXT_DHCP_OPTION(Opt) \
> -  (EFI_DHCP4_PACKET_OPTION *) ((UINT8 *) (Opt) + sizeof
> (EFI_DHCP4_PACKET_OPTION) + (Opt)->Length - 1)
> -
> -#define GET_OPTION_BUFFER_LEN(Pkt)  ((Pkt)->Length - sizeof
> (EFI_DHCP4_HEADER) - 4)
> -#define IS_PROXY_DHCP_OFFER(Offer)  EFI_IP4_EQUAL (&((Offer)-
> >Dhcp4.Header.YourAddr), &mZeroIp4Addr)
> -
> -#define GET_NEXT_BOOT_SVR_ENTRY(Ent) \
> -  (PXEBC_BOOT_SVR_ENTRY *) ((UINT8 *) Ent + sizeof (*(Ent)) + ((Ent)->IpCnt - 1)
> * sizeof (EFI_IPv4_ADDRESS))
> -
> -
> -/**
> -  This function initialize the DHCP4 message instance.
> -
> -  This function will pad each item of dhcp4 message packet.
> -
> -  @param  Seed    Pointer to the message instance of the DHCP4 packet.
> -  @param  Udp4    Pointer to the EFI_UDP4_PROTOCOL instance.
> -
> -**/
> -VOID
> -PxeBcInitSeedPacket (
> -  IN EFI_DHCP4_PACKET  *Seed,
> -  IN EFI_UDP4_PROTOCOL *Udp4
> -  );
> -
> -
> -/**
> -  Parse the cached dhcp packet.
> -
> -  @param  CachedPacket  Pointer to cached dhcp packet.
> -
> -  @retval TRUE          Succeed to parse and validation.
> -  @retval FALSE         Fail to parse or validation.
> -
> -**/
> -BOOLEAN
> -PxeBcParseCachedDhcpPacket (
> -  IN PXEBC_CACHED_DHCP4_PACKET  *CachedPacket
> -  );
> -
> -/**
> -  This function is to check the selected proxy offer (include BINL dhcp offer and
> -  DHCP_ONLY offer ) and set the flag and copy the DHCP packets to the Pxe
> base code
> -  mode structure.
> -
> -  @param  Private          Pointer to PxeBc private data.
> -
> -  @retval EFI_SUCCESS                Operational successful.
> -  @retval EFI_NO_RESPONSE            Offer dhcp service failed.
> -  @retval EFI_BUFFER_TOO_SMALL       Failed to copy the packet to Pxe base
> code mode.
> -
> -**/
> -EFI_STATUS
> -PxeBcCheckSelectedOffer (
> -  IN PXEBC_PRIVATE_DATA  *Private
> -  );
> -
> -
> -/**
> -  Callback routine.
> -
> -  EFI_DHCP4_CALLBACK is provided by the consumer of the EFI DHCPv4
> Protocol driver
> -  to intercept events that occurred in the configuration process. This structure
> -  provides advanced control of each state transition of the DHCP process. The
> -  returned status code determines the behavior of the EFI DHCPv4 Protocol
> driver.
> -  There are three possible returned values, which are described in the following
> -  table.
> -
> -  @param  This                  Pointer to the EFI DHCPv4 Protocol instance that is
> used to
> -                                configure this callback function.
> -  @param  Context               Pointer to the context that is initialized by
> -                                EFI_DHCP4_PROTOCOL.Configure().
> -  @param  CurrentState          The current operational state of the EFI DHCPv4
> Protocol
> -                                driver.
> -  @param  Dhcp4Event            The event that occurs in the current state, which
> usually means a
> -                                state transition.
> -  @param  Packet                The DHCP packet that is going to be sent or already
> received.
> -  @param  NewPacket             The packet that is used to replace the above
> Packet.
> -
> -  @retval EFI_SUCCESS           Tells the EFI DHCPv4 Protocol driver to continue
> the DHCP process.
> -  @retval EFI_NOT_READY         Only used in the Dhcp4Selecting state. The EFI
> DHCPv4 Protocol
> -                                driver will continue to wait for more DHCPOFFER packets until
> the retry
> -                                timeout expires.
> -  @retval EFI_ABORTED           Tells the EFI DHCPv4 Protocol driver to abort the
> current process and
> -                                return to the Dhcp4Init or Dhcp4InitReboot state.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDhcpCallBack (
> -  IN EFI_DHCP4_PROTOCOL                * This,
> -  IN VOID                              *Context,
> -  IN EFI_DHCP4_STATE                   CurrentState,
> -  IN EFI_DHCP4_EVENT                   Dhcp4Event,
> -  IN EFI_DHCP4_PACKET                  * Packet OPTIONAL,
> -  OUT EFI_DHCP4_PACKET                 **NewPacket OPTIONAL
> -  );
> -
> -/**
> -  Switch the Ip4 policy to static.
> -
> -  @param[in]  Private             The pointer to PXEBC_PRIVATE_DATA.
> -
> -  @retval     EFI_SUCCESS         The policy is already configured to static.
> -  @retval     Others              Other error as indicated..
> -
> -**/
> -EFI_STATUS
> -PxeBcSetIp4Policy (
> -  IN PXEBC_PRIVATE_DATA            *Private
> -  );
> -
> -/**
> -  Discover the boot of service and initialize the vendor option if exists.
> -
> -  @param  Private               Pointer to PxeBc private data.
> -  @param  Type                  PxeBc option boot item type
> -  @param  Layer                 PxeBc option boot item layer
> -  @param  UseBis                Use BIS or not
> -  @param  DestIp                Ip address for server
> -  @param  IpCount               The total count of the server ip address
> -  @param  SrvList               Server list
> -  @param  IsDiscv               Discover the vendor or not
> -  @param  Reply                 The dhcp4 packet of Pxe reply
> -
> -  @retval EFI_SUCCESS           Operation succeeds.
> -  @retval EFI_OUT_OF_RESOURCES  Allocate memory pool failed.
> -  @retval EFI_NOT_FOUND         There is no vendor option exists.
> -  @retval EFI_TIMEOUT           Send Pxe Discover time out.
> -
> -**/
> -EFI_STATUS
> -PxeBcDiscvBootService (
> -  IN PXEBC_PRIVATE_DATA                * Private,
> -  IN UINT16                            Type,
> -  IN UINT16                            *Layer,
> -  IN BOOLEAN                           UseBis,
> -  IN EFI_IP_ADDRESS                    * DestIp,
> -  IN UINT16                            IpCount,
> -  IN EFI_PXE_BASE_CODE_SRVLIST         * SrvList,
> -  IN BOOLEAN                           IsDiscv,
> -  OUT EFI_DHCP4_PACKET                 * Reply OPTIONAL
> -  );
> -
> -
> -/**
> -  Initialize the DHCP options and build the option list.
> -
> -  @param  Private          Pointer to PxeBc private data.
> -  @param  OptList          Pointer to a DHCP option list.
> -
> -  @param  IsDhcpDiscover   Discover dhcp option or not.
> -
> -  @return The index item number of the option list.
> -
> -**/
> -UINT32
> -PxeBcBuildDhcpOptions (
> -  IN PXEBC_PRIVATE_DATA            *Private,
> -  IN EFI_DHCP4_PACKET_OPTION       **OptList,
> -  IN BOOLEAN                       IsDhcpDiscover
> -  );
> -
> -
> -/**
> -  Create the boot options.
> -
> -  @param  OptList    Pointer to the list of the options
> -  @param  Type       the type of option
> -  @param  Layer      the layer of the boot options
> -  @param  OptLen     length of opotion
> -
> -**/
> -VOID
> -PxeBcCreateBootOptions (
> -  IN  EFI_DHCP4_PACKET_OPTION          *OptList,
> -  IN  UINT16                           Type,
> -  IN  UINT16                           *Layer,
> -  OUT UINT32                           *OptLen
> -  );
> -
> -
> -/**
> -  Parse interested dhcp options.
> -
> -  @param  Buffer     Pointer to the dhcp options packet.
> -  @param  Length     The length of the dhcp options.
> -  @param  OptTag     The option OpCode.
> -
> -  @return NULL if the buffer length is 0 and OpCode is not
> -          DHCP4_TAG_EOP, or the pointer to the buffer.
> -
> -**/
> -EFI_DHCP4_PACKET_OPTION *
> -PxeBcParseExtendOptions (
> -  IN UINT8                         *Buffer,
> -  IN UINT32                        Length,
> -  IN UINT8                         OptTag
> -  );
> -
> -
> -/**
> -  This function is to parse and check vendor options.
> -
> -  @param  Dhcp4Option           Pointer to dhcp options
> -  @param  VendorOption          Pointer to vendor options
> -
> -  @return TRUE if valid for vendor options, or FALSE.
> -
> -**/
> -BOOLEAN
> -PxeBcParseVendorOptions (
> -  IN EFI_DHCP4_PACKET_OPTION       *Dhcp4Option,
> -  IN PXEBC_VENDOR_OPTION           *VendorOption
> -  );
> -
> -
> -/**
> -  Choose the boot prompt.
> -
> -  @param  Private              Pointer to PxeBc private data.
> -
> -  @retval EFI_SUCCESS          Select boot prompt done.
> -  @retval EFI_TIMEOUT          Select boot prompt time out.
> -  @retval EFI_NOT_FOUND        The proxy offer is not Pxe10.
> -  @retval EFI_ABORTED          User cancel the operation.
> -  @retval EFI_NOT_READY        Read the input key from the keybroad has not
> finish.
> -
> -**/
> -EFI_STATUS
> -PxeBcSelectBootPrompt (
> -  IN PXEBC_PRIVATE_DATA              *Private
> -  );
> -
> -
> -/**
> -  Select the boot menu.
> -
> -  @param  Private         Pointer to PxeBc private data.
> -  @param  Type            The type of the menu.
> -  @param  UseDefaultItem  Use default item or not.
> -
> -  @retval EFI_ABORTED     User cancel operation.
> -  @retval EFI_SUCCESS     Select the boot menu success.
> -  @retval EFI_NOT_READY   Read the input key from the keybroad has not finish.
> -
> -**/
> -EFI_STATUS
> -PxeBcSelectBootMenu (
> -  IN  PXEBC_PRIVATE_DATA              *Private,
> -  OUT UINT16                          *Type,
> -  IN  BOOLEAN                         UseDefaultItem
> -  );
> -
> -#endif
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.h
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.h
> deleted file mode 100644
> index b7bf069dd637..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.h
> +++ /dev/null
> @@ -1,102 +0,0 @@
> -/** @file
> -
> -Copyright (c) 2007 - 2018, 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_DRIVER_H__
> -#define __EFI_PXEBC_DRIVER_H__
> -
> -/**
> -  Test to see if this driver supports ControllerHandle. This service
> -  is called by the EFI boot service ConnectController(). In
> -  order to make drivers as small as possible, there are a few calling
> -  restrictions for this service. ConnectController() must
> -  follow these calling restrictions. If any other agent wishes to call
> -  Supported() it must also follow these calling restrictions.
> -  PxeBc requires DHCP4 and MTFTP4 protocols.
> -
> -  @param  This                Protocol instance pointer.
> -  @param  ControllerHandle    Handle of device to test
> -  @param  RemainingDevicePath Optional parameter use to pick a specific child
> -                              device to start.
> -
> -  @retval EFI_SUCCESS         This driver supports this device
> -  @retval EFI_ALREADY_STARTED This driver is already running on this device
> -  @retval other               This driver does not support this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingSupported (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  * This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN EFI_DEVICE_PATH_PROTOCOL     * RemainingDevicePath OPTIONAL
> -  );
> -
> -/**
> -  Start this driver on ControllerHandle. This service is called by the
> -  EFI boot service ConnectController(). In order to make
> -  drivers as small as possible, there are a few calling restrictions for
> -  this service. ConnectController() must follow these
> -  calling restrictions. If any other agent wishes to call Start() it
> -  must also follow these calling restrictions.
> -
> -  @param  This                 Protocol instance pointer.
> -  @param  ControllerHandle     Handle of device to bind driver to
> -  @param  RemainingDevicePath  Optional parameter use to pick a specific child
> -                               device to start.
> -
> -  @retval EFI_SUCCESS          This driver is added to ControllerHandle
> -  @retval EFI_ALREADY_STARTED  This driver is already running on
> ControllerHandle
> -  @retval other                This driver does not support this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingStart (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  * This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN EFI_DEVICE_PATH_PROTOCOL     * RemainingDevicePath OPTIONAL
> -  );
> -
> -/**
> -  Stop this driver on ControllerHandle. This service is called by the
> -  EFI boot service DisconnectController(). In order to
> -  make drivers as small as possible, there are a few calling
> -  restrictions for this service. DisconnectController()
> -  must follow these calling restrictions. If any other agent wishes
> -  to call Stop() it must also follow these calling restrictions.
> -
> -  @param  This              Protocol instance pointer.
> -  @param  ControllerHandle  Handle of device to stop driver on
> -  @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If
> number of
> -                            children is zero stop the entire bus driver.
> -  @param  ChildHandleBuffer List of Child Handles to Stop.
> -
> -  @retval EFI_SUCCESS       This driver is removed ControllerHandle
> -  @retval other             This driver was not removed from this device
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -PxeBcDriverBindingStop (
> -  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
> -  IN EFI_HANDLE                   ControllerHandle,
> -  IN UINTN                        NumberOfChildren,
> -  IN EFI_HANDLE                   *ChildHandleBuffer
> -  );
> -
> -extern EFI_COMPONENT_NAME2_PROTOCOL gPxeBcComponentName2;
> -extern EFI_COMPONENT_NAME_PROTOCOL  gPxeBcComponentName;
> -extern EFI_DRIVER_BINDING_PROTOCOL  gPxeBcDriverBinding;
> -
> -#endif
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
> deleted file mode 100644
> index e96b6f2c5d14..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
> +++ /dev/null
> @@ -1,189 +0,0 @@
> -/** @file
> -
> -Copyright (c) 2007 - 2016, 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_IMPL_H__
> -#define __EFI_PXEBC_IMPL_H__
> -
> -
> -typedef struct _PXEBC_PRIVATE_DATA  PXEBC_PRIVATE_DATA;
> -
> -#include <Uefi.h>
> -
> -#include <Guid/SmBios.h>
> -#include <IndustryStandard/SmBios.h>
> -#include <IndustryStandard/Dhcp.h>
> -#include <Protocol/Dhcp4.h>
> -#include <Protocol/PxeBaseCode.h>
> -#include <Protocol/Mtftp4.h>
> -#include <Protocol/Udp4.h>
> -#include <Protocol/LoadFile.h>
> -#include <Protocol/NetworkInterfaceIdentifier.h>
> -#include <Protocol/PxeBaseCodeCallBack.h>
> -#include <Protocol/Arp.h>
> -#include <Protocol/Ip4.h>
> -#include <Protocol/Ip4Config2.h>
> -
> -#include <Library/DebugLib.h>
> -#include <Library/DevicePathLib.h>
> -#include <Library/BaseMemoryLib.h>
> -#include <Library/MemoryAllocationLib.h>
> -#include <Library/UefiDriverEntryPoint.h>
> -#include <Library/UefiBootServicesTableLib.h>
> -#include <Library/UefiLib.h>
> -#include <Library/BaseLib.h>
> -#include <Library/NetLib.h>
> -#include <Library/DpcLib.h>
> -#include <Library/PcdLib.h>
> -
> -#include "PxeBcDriver.h"
> -#include "PxeBcDhcp.h"
> -#include "PxeBcMtftp.h"
> -#include "PxeBcSupport.h"
> -
> -#define PXEBC_PRIVATE_DATA_SIGNATURE  SIGNATURE_32 ('P', 'X', 'E', 'P')
> -#define PXEBC_MTFTP_TIMEOUT                4
> -#define PXEBC_MTFTP_RETRIES                6
> -#define PXEBC_DEFAULT_UDP_OVERHEAD_SIZE    8
> -#define PXEBC_DEFAULT_TFTP_OVERHEAD_SIZE   4
> -#define PXEBC_DEFAULT_PACKET_SIZE          1480
> -#define PXEBC_DEFAULT_LIFETIME             50000  // 50ms, unit is microsecond
> -#define PXEBC_CHECK_MEDIA_WAITING_TIME
> EFI_TIMER_PERIOD_SECONDS(20)
> -
> -struct _PXEBC_PRIVATE_DATA {
> -  UINT32                                    Signature;
> -  EFI_HANDLE                                Controller;
> -  EFI_HANDLE                                Image;
> -  EFI_HANDLE                                ArpChild;
> -  EFI_HANDLE                                Dhcp4Child;
> -  EFI_HANDLE                                Ip4Child;
> -  EFI_HANDLE                                Mtftp4Child;
> -  EFI_HANDLE                                Udp4ReadChild;
> -  EFI_HANDLE                                Udp4WriteChild;
> -
> -  EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;
> -
> -  EFI_PXE_BASE_CODE_PROTOCOL                PxeBc;
> -  EFI_LOAD_FILE_PROTOCOL                    LoadFile;
> -  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL       LoadFileCallback;
> -  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL       *PxeBcCallback;
> -  EFI_ARP_PROTOCOL                          *Arp;
> -  EFI_DHCP4_PROTOCOL                        *Dhcp4;
> -  EFI_IP4_PROTOCOL                          *Ip4;
> -  EFI_IP4_CONFIG2_PROTOCOL                  *Ip4Config2;
> -  EFI_IP4_CONFIG_DATA                       Ip4ConfigData;
> -  EFI_MTFTP4_PROTOCOL                       *Mtftp4;
> -  EFI_UDP4_PROTOCOL                         *Udp4Read;
> -  EFI_UDP4_PROTOCOL                         *Udp4Write;
> -  UINT16                                    CurrentUdpSrcPort;
> -  EFI_UDP4_CONFIG_DATA                      Udp4CfgData;
> -
> -
> -  EFI_PXE_BASE_CODE_MODE                    Mode;
> -  EFI_PXE_BASE_CODE_FUNCTION                Function;
> -
> -  CHAR8                                     *BootFileName;
> -
> -  EFI_IP_ADDRESS                            StationIp;
> -  EFI_IP_ADDRESS                            SubnetMask;
> -  EFI_IP_ADDRESS                            GatewayIp;
> -  EFI_IP_ADDRESS                            ServerIp;
> -  BOOLEAN                                   AddressIsOk;
> -  UINT32                                    Ip4MaxPacketSize;
> -  UINTN                                     BlockSize;
> -  UINTN                                     FileSize;
> -
> -  UINT8                                     OptionBuffer[PXEBC_DHCP4_MAX_OPTION_SIZE];
> -  EFI_DHCP4_PACKET                          SeedPacket;
> -  EFI_MAC_ADDRESS                           Mac;
> -  UINT8                                     MacLen;
> -
> -  BOOLEAN                                   SortOffers;
> -  BOOLEAN                                   GotProxyOffer;
> -  UINT32                                    NumOffers;
> -  UINT32                                    SelectedOffer;
> -  UINT32                                    ProxyOfferType;
> -
> -  //
> -  // Cached packets as complements of pxe mode data
> -  //
> -  PXEBC_CACHED_DHCP4_PACKET                 ProxyOffer;
> -  PXEBC_CACHED_DHCP4_PACKET                 Dhcp4Ack;
> -  PXEBC_CACHED_DHCP4_PACKET                 PxeReply;
> -  PXEBC_CACHED_DHCP4_PACKET
> Dhcp4Offers[PXEBC_MAX_OFFER_NUM];
> -
> -  //
> -  // Arrays for different types of offers:
> -  //   ServerCount records the count of the servers we got the offers,
> -  //   OfferIndex records the index of the offer sent by the server indexed by
> ServerCount.
> -  //
> -  UINT32                                    ServerCount[DHCP4_PACKET_TYPE_MAX];
> -  UINT32
> OfferIndex[DHCP4_PACKET_TYPE_MAX][PXEBC_MAX_OFFER_NUM];
> -  UINT32                                    BootpIndex;
> -  UINT32                                    ProxyIndex[DHCP4_PACKET_TYPE_MAX];
> -  UINT32                                    BinlIndex[PXEBC_MAX_OFFER_NUM];
> -
> -  EFI_EVENT                                 GetArpCacheEvent;
> -  //
> -  // token and event used to get ICMP error data from IP
> -  //
> -  EFI_IP4_COMPLETION_TOKEN                  IcmpErrorRcvToken;
> -};
> -
> -#define PXEBC_PRIVATE_DATA_FROM_PXEBC(a)          CR (a,
> PXEBC_PRIVATE_DATA, PxeBc, PXEBC_PRIVATE_DATA_SIGNATURE)
> -
> -#define PXEBC_PRIVATE_DATA_FROM_LOADFILE(a)       CR (a,
> PXEBC_PRIVATE_DATA, LoadFile, PXEBC_PRIVATE_DATA_SIGNATURE)
> -
> -#define PXEBC_PRIVATE_DATA_FROM_PXEBCCALLBACK(a)  CR (a,
> PXEBC_PRIVATE_DATA, PxeBcCallback, PXEBC_PRIVATE_DATA_SIGNATURE)
> -
> -extern EFI_PXE_BASE_CODE_PROTOCOL mPxeBcProtocolTemplate;
> -extern EFI_LOAD_FILE_PROTOCOL     mLoadFileProtocolTemplate;
> -
> -/**
> -  Causes the driver to load a specified file.
> -
> -  @param  This                  Protocol instance pointer.
> -  @param  FilePath              The device specific path of the file to load.
> -  @param  BootPolicy            If TRUE, indicates that the request originates from
> the
> -                                boot manager is attempting to load FilePath as a boot
> -                                selection. If FALSE, then FilePath must match as exact file
> -                                to be loaded.
> -  @param  BufferSize            On input the size of Buffer in bytes. On output with
> a return
> -                                code of EFI_SUCCESS, the amount of data transferred to
> -                                Buffer. On output with a return code of
> EFI_BUFFER_TOO_SMALL,
> -                                the size of Buffer required to retrieve the requested file.
> -  @param  Buffer                The memory buffer to transfer the file to. IF Buffer is
> NULL,
> -                                then no the size of the requested file is returned in
> -                                BufferSize.
> -
> -  @retval EFI_SUCCESS                 The file was loaded.
> -  @retval EFI_UNSUPPORTED             The device does not support the provided
> BootPolicy
> -  @retval EFI_INVALID_PARAMETER       FilePath is not a valid device path, or
> -                                      BufferSize is NULL.
> -  @retval EFI_NO_MEDIA                No medium was present to load the file.
> -  @retval EFI_DEVICE_ERROR            The file was not loaded due to a device
> error.
> -  @retval EFI_NO_RESPONSE             The remote system did not respond.
> -  @retval EFI_NOT_FOUND               The file was not found.
> -  @retval EFI_ABORTED                 The file load process was manually cancelled.
> -
> -**/
> -EFI_STATUS
> -EFIAPI
> -EfiPxeLoadFile (
> -  IN EFI_LOAD_FILE_PROTOCOL           * This,
> -  IN EFI_DEVICE_PATH_PROTOCOL         * FilePath,
> -  IN BOOLEAN                          BootPolicy,
> -  IN OUT UINTN                        *BufferSize,
> -  IN VOID                             *Buffer OPTIONAL
> -  );
> -
> -#endif
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.h
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.h
> deleted file mode 100644
> index 903dd4fbb69a..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.h
> +++ /dev/null
> @@ -1,137 +0,0 @@
> -/** @file
> -  Mtftp routines for PxeBc.
> -
> -Copyright (c) 2007 - 2018, 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_MTFTP_H__
> -#define __EFI_PXEBC_MTFTP_H__
> -
> -#define PXE_MTFTP_OPTION_BLKSIZE_INDEX   0
> -#define PXE_MTFTP_OPTION_TIMEOUT_INDEX   1
> -#define PXE_MTFTP_OPTION_TSIZE_INDEX     2
> -#define PXE_MTFTP_OPTION_MULTICAST_INDEX 3
> -#define PXE_MTFTP_OPTION_MAXIMUM_INDEX   4
> -
> -#define PXE_MTFTP_ERROR_STRING_LENGTH    127
> -#define PXE_MTFTP_OPTBUF_MAXNUM_INDEX    128
> -
> -
> -/**
> -  This function is to get size of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferSize     Pointer to buffer size
> -
> -  @retval EFI_SUCCESS        Get the size of file success
> -  @retval EFI_NOT_FOUND      Parse the tftp ptions failed.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval Other              Has not get the size of the file.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpGetFileSize (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN UINTN                      *BlockSize,
> -  IN OUT UINT64                 *BufferSize
> -  );
> -
> -
> -/**
> -  This function is to get data of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferPtr      Pointer to buffer
> -  @param  BufferSize     Pointer to buffer size
> -  @param  DontUseBuffer  Indicate whether with a receive buffer
> -
> -  @retval EFI_SUCCESS        Read the data success from the special file.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Read data from file failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpReadFile (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN UINTN                      *BlockSize,
> -  IN UINT8                      *BufferPtr,
> -  IN OUT UINT64                 *BufferSize,
> -  IN BOOLEAN                    DontUseBuffer
> -  );
> -
> -
> -/**
> -  This function is put data of a file by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data
> -  @param  Config         Pointer to Mtftp configuration data
> -  @param  Filename       Pointer to file name
> -  @param  Overwrite      Indicate whether with overwrite attribute
> -  @param  BlockSize      Pointer to block size
> -  @param  BufferPtr      Pointer to buffer
> -  @param  BufferSize     Pointer to buffer size
> -
> -  @retval EFI_SUCCESS        Write the data success into the special file.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Write data into file failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpWriteFile (
> -  IN PXEBC_PRIVATE_DATA         *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA     *Config,
> -  IN UINT8                      *Filename,
> -  IN BOOLEAN                    Overwrite,
> -  IN UINTN                      *BlockSize,
> -  IN UINT8                      *BufferPtr,
> -  IN OUT UINT64                 *BufferSize
> -  );
> -
> -
> -/**
> -  This function is to get data(file) from a directory(may be a server) by Tftp.
> -
> -  @param  Private        Pointer to PxeBc private data.
> -  @param  Config         Pointer to Mtftp configuration data.
> -  @param  Filename       Pointer to file name.
> -  @param  BlockSize      Pointer to block size.
> -  @param  BufferPtr      Pointer to buffer.
> -  @param  BufferSize     Pointer to buffer size.
> -  @param  DontUseBuffer  Indicate whether with a receive buffer.
> -
> -  @retval EFI_SUCCES         Get the data from the file included in directory
> success.
> -  @retval EFI_DEVICE_ERROR   The network device encountered an error during
> this operation.
> -  @retval other              Operation failed.
> -
> -**/
> -EFI_STATUS
> -PxeBcTftpReadDirectory (
> -  IN PXEBC_PRIVATE_DATA            *Private,
> -  IN EFI_MTFTP4_CONFIG_DATA        *Config,
> -  IN UINT8                         *Filename,
> -  IN UINTN                         *BlockSize,
> -  IN UINT8                         *BufferPtr,
> -  IN OUT UINT64                    *BufferSize,
> -  IN BOOLEAN                       DontUseBuffer
> -  );
> -
> -#endif
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
> deleted file mode 100644
> index a28c9740c171..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
> +++ /dev/null
> @@ -1,134 +0,0 @@
> -/** @file
> -  Support routines for PxeBc.
> -Copyright (c) 2007 - 2018, 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__
> -
> -
> -/**
> -  The common notify function associated with various PxeBc events.
> -
> -  @param  Event     The event signaled.
> -  @param  Context   The context.
> -
> -**/
> -VOID
> -EFIAPI
> -PxeBcCommonNotify (
> -  IN EFI_EVENT           Event,
> -  IN VOID                *Context
> -  );
> -
> -
> -/**
> -  This function initialize(or configure) the Udp4Write instance.
> -
> -  @param  Udp4       Pointer to the EFI_UDP4_PROTOCOL instance.
> -  @param  StationIp  Pointer to the station ip address.
> -  @param  SubnetMask Pointer to the subnetmask of the station ip address.
> -  @param  Gateway    Pointer to the gateway ip address.
> -  @param  SrcPort    Pointer to the srouce port of the station.
> -  @param  Ttl        The time to live field of the IP header.
> -  @param  ToS        The type of service field of the IP header.
> -
> -  @retval EFI_SUCCESS           The configuration settings were set, changed, or
> reset successfully.
> -  @retval EFI_NO_MAPPING        When using a default address, configuration
> (DHCP, BOOTP,
> -                                RARP, etc.) is not finished yet.
> -  @retval EFI_INVALID_PARAMETER One or more following conditions are
> TRUE:
> -  @retval EFI_ALREADY_STARTED   The EFI UDPv4 Protocol instance is already
> started/configured
> -                                and must be stopped/reset before it can be reconfigured.
> -  @retval EFI_ACCESS_DENIED     UdpConfigData. AllowDuplicatePort is FALSE
> -                                and UdpConfigData.StationPort is already used by
> -                                other instance.
> -  @retval EFI_OUT_OF_RESOURCES  The EFI UDPv4 Protocol driver cannot
> allocate memory for this
> -                                EFI UDPv4 Protocol instance.
> -  @retval EFI_DEVICE_ERROR      An unexpected network or system error
> occurred and this instance
> -                                was not opened.
> -  @retval Others                Please examine the function Udp4->Routes(Udp4,
> FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway) returns.
> -
> -**/
> -EFI_STATUS
> -PxeBcConfigureUdpWriteInstance (
> -  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     UINT8          Ttl,
> -  IN     UINT8          ToS
> -  );
> -
> -
> -/**
> -  This function is to display the IPv4 address.
> -
> -  @param[in]  Ip        The pointer to the IPv4 address.
> -
> -**/
> -VOID
> -PxeBcShowIp4Addr (
> -  IN EFI_IPv4_ADDRESS   *Ip
> -  );
> -
> -
> -/**
> -  Convert number to ASCII value.
> -
> -  @param  Number              Numeric value to convert to decimal ASCII value.
> -  @param  Buffer              Buffer to place ASCII version of the Number.
> -  @param  Length              Length of Buffer.
> -
> -**/
> -VOID
> -CvtNum (
> -  IN UINTN  Number,
> -  IN UINT8  *Buffer,
> -  IN UINTN   Length
> -  );
> -
> -
> -/**
> -  Convert unsigned int number to decimal number.
> -
> -  @param      Number         The unsigned int number will be converted.
> -  @param      Buffer         Pointer to the buffer to store the decimal number after
> transform.
> -  @param[in]  BufferSize     The maxsize of the buffer.
> -
> -  @return the length of the number after transform.
> -
> -**/
> -UINTN
> -UtoA10 (
> -  IN UINTN Number,
> -  IN CHAR8 *Buffer,
> -  IN UINTN BufferSize
> -
> -  );
> -
> -
> -/**
> -  Convert ASCII numeric string to a UINTN value.
> -
> -  @param  Buffer  Pointer to the 8-byte unsigned int value.
> -
> -  @return UINTN value of the ASCII string.
> -
> -**/
> -UINT64
> -AtoU64 (
> -  IN UINT8 *Buffer
> -  );
> -
> -
> -#endif
> -
> diff --git
> a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxe.uni
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxe.uni
> deleted file mode 100644
> index e97c3cadd973..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxe.uni
> +++ /dev/null
> @@ -1,25 +0,0 @@
> -// /** @file
> -// This module produces EFI Preboot Execution Environment (PXE) Base Code
> Protocol.
> -//
> -// This module produces EFI PXE Base Code Protocol upon EFI MMP Protocl and
> IPv4
> -// network stack, used to control PXE-compatible devices. It produces EFI Load
> File
> -// Protocol to provide one clean way to otain control from the boot manager if
> the
> -// boot patch is from the remote device.
> -//
> -// Copyright (c) 2007 - 2018, 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.
> -//
> -// **/
> -
> -
> -#string STR_MODULE_ABSTRACT             #language en-US "Produces EFI
> Preboot Execution Environment (PXE) Base Code Protocol"
> -
> -#string STR_MODULE_DESCRIPTION          #language en-US "This module
> produces EFI PXE Base Code Protocol upon the EFI MMP Protocol and the IPv4
> network stack, and is used to control PXE-compatible devices. It produces the
> EFI Load File Protocol to provide a clean method to obtain control from the
> boot manager if the boot patch is from the remote device."
> -
> diff --git
> a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxeExtra.uni
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxeExtra.uni
> deleted file mode 100644
> index 2c1bda1a8bd2..000000000000
> ---
> a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxe4BcDxeExtra.uni
> +++ /dev/null
> @@ -1,20 +0,0 @@
> -// /** @file
> -// UefiPxe4BcDxe Localized Strings and Content
> -//
> -// Copyright (c) 2013 - 2018, 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.
> -//
> -// **/
> -
> -#string STR_PROPERTIES_MODULE_NAME
> -#language en-US
> -"UEFI PXE Base Code DXE Driver"
> -
> -
> diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
> b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
> deleted file mode 100644
> index 042401992945..000000000000
> --- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
> +++ /dev/null
> @@ -1,102 +0,0 @@
> -## @file
> -#  This module produces EFI Preboot Execution Environment (PXE) Base Code
> Protocol.
> -#
> -#  This module produces EFI PXE Base Code Protocol upon EFI MMP Protocl and
> IPv4
> -#  network stack, used to control PXE-compatible devices. It produces EFI Load
> File
> -#  Protocol to provide one clean way to otain control from the boot manager if
> the
> -#  boot patch is from the remote device. This driver only supports IPv4 network
> stack.
> -#
> -#  Notes:
> -#  1) This driver can't co-work with the UefiPxeBcDxe driver in NetworkPkg.
> -#  2) This driver might have some issues that have been fixed in the
> UefiPxeBcDxe
> -#     driver in NetworkPkg.
> -#  3) This driver supports fewer features than the UefiPxeBcDxe driver in
> NetworkPkg
> -#     (e.g. IPv6, MTFTP windowsize).
> -#  4) UefiPxeBcDxe driver in NetworkPkg is recommended for use instead of this
> one even
> -#     though both of them can be used.
> -#
> -#  Copyright (c) 2007 - 2018, 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.
> -#
> -#
> -##
> -
> -
> -[Defines]
> -  INF_VERSION                    = 0x00010005
> -  BASE_NAME                      = UefiPxe4BcDxe
> -  MODULE_UNI_FILE                = UefiPxe4BcDxe.uni
> -  FILE_GUID                      = 3B1DEAB5-C75D-442e-9238-8E2FFB62B0BB
> -  MODULE_TYPE                    = UEFI_DRIVER
> -  VERSION_STRING                 = 1.0
> -  ENTRY_POINT                    = PxeBcDriverEntryPoint
> -  UNLOAD_IMAGE                   = NetLibDefaultUnload
> -
> -#
> -# The following information is for reference only and not required by the build
> tools.
> -#
> -#  VALID_ARCHITECTURES           = IA32 X64
> -#
> -#  DRIVER_BINDING                =  gPxeBcDriverBinding
> -#  COMPONENT_NAME                =  gPxeBcComponentName
> -#  COMPONENT_NAME2               =  gPxeBcComponentName2
> -#
> -
> -[Sources]
> -  PxeBcMtftp.c
> -  PxeBcSupport.h
> -  PxeBcSupport.c
> -  PxeBcDriver.c
> -  PxeBcDhcp.h
> -  ComponentName.c
> -  PxeBcImpl.c
> -  PxeBcImpl.h
> -  PxeBcDhcp.c
> -  PxeBcMtftp.h
> -  PxeBcDriver.h
> -
> -
> -[Packages]
> -  MdePkg/MdePkg.dec
> -  MdeModulePkg/MdeModulePkg.dec
> -
> -[LibraryClasses]
> -  BaseLib
> -  UefiLib
> -  UefiBootServicesTableLib
> -  UefiDriverEntryPoint
> -  BaseMemoryLib
> -  MemoryAllocationLib
> -  DebugLib
> -  NetLib
> -  DpcLib
> -  PcdLib
> -
> -[Protocols]
> -  gEfiPxeBaseCodeCallbackProtocolGuid              ## SOMETIMES_PRODUCES
> -  gEfiPxeBaseCodeProtocolGuid                      ## BY_START
> -  gEfiLoadFileProtocolGuid                         ## BY_START
> -  gEfiNetworkInterfaceIdentifierProtocolGuid_31    ## SOMETIMES_CONSUMES
> -  gEfiArpServiceBindingProtocolGuid                ## TO_START
> -  gEfiArpProtocolGuid                              ## TO_START
> -  gEfiMtftp4ServiceBindingProtocolGuid             ## TO_START
> -  gEfiMtftp4ProtocolGuid                           ## TO_START
> -  gEfiUdp4ServiceBindingProtocolGuid               ## TO_START
> -  gEfiUdp4ProtocolGuid                             ## TO_START
> -  gEfiDhcp4ServiceBindingProtocolGuid              ## TO_START
> -  gEfiDhcp4ProtocolGuid                            ## TO_START
> -  gEfiIp4ServiceBindingProtocolGuid                ## TO_START
> -  gEfiIp4ProtocolGuid                              ## TO_START
> -  gEfiIp4Config2ProtocolGuid                       ## TO_START
> -
> -[Pcd]
> -  gEfiMdeModulePkgTokenSpaceGuid.PcdTftpBlockSize  ##
> SOMETIMES_CONSUMES
> -
> -[UserExtensions.TianoCore."ExtraFiles"]
> -  UefiPxe4BcDxeExtra.uni
> --
> 2.19.1.windows.1



  reply	other threads:[~2018-12-20  4:56 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-20  1:41 [PATCH v2 0/6] Delete TCP, PXE, iSCSI driver in MdeModulePkg Siyuan Fu
2018-12-20  1:41 ` [PATCH v2 1/6] MdeModulePkg: Delete Tcp4Dxe " Siyuan Fu
2018-12-20  2:09   ` Ni, Ruiyu
2018-12-20  4:59   ` Wang, Jian J
2018-12-20  1:41 ` [PATCH v2 2/6] NetworkPkg: Remove some clarification from TcpDxe.inf Siyuan Fu
2018-12-20  1:41 ` [PATCH v2 3/6] MdeModulePkg: Delete IScsiDxe in MdeModulePkg Siyuan Fu
2018-12-20  2:07   ` Ni, Ruiyu
2018-12-20  4:43   ` Wang, Jian J
2018-12-20  1:41 ` [PATCH v2 4/6] NetworkPkg: Remove some clarification from IScsiDxe.inf Siyuan Fu
2018-12-20  1:41 ` [PATCH v2 5/6] MdeModulePkg: Delete UefiPxeBcDxe in MdeModulePkg Siyuan Fu
2018-12-20  4:56   ` Wang, Jian J [this message]
2018-12-20  1:41 ` [PATCH v2 6/6] NetworkPkg: Remove some clarification from UefiPxeBcDxe.inf Siyuan Fu

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