[Description]:

 Problem with PXE boot to Windows Server 2008 install. The reason is that UdpRead and UdpWrite interfaces cannot work well with the same UDP instance.
[Solution]
 Use separate instances for UDP Read and UDP write in UefiPxeBC module.
[Impaction]:
 UefiPxeBcDxe and Udp4Dxe module.
[Reference Info]:
 EDK tracker 1133 - Problem with PXE boot to Windows Server 2008 install. 



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5303 6f19259b-4bc3-4df7-8a09-765794883524

7 files changed, 186 insertions, 57 deletions

diff --git a/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
index c190a1d..4b281bb 100644
--- a/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
+++ b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
@@ -1,6 +1,6 @@
 /** @file

 

-Copyright (c) 2006 - 2007, Intel Corporation

+Copyright (c) 2006 - 2008, Intel Corporation                                                         

 All rights reserved. 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

@@ -306,7 +306,7 @@ Udp4CheckTimeout (
       //

       // Iterate all the rxdatas belonging to this udp instance.

       //

-      Wrap = NET_LIST_USER_STRUCT (Entry, UDP4_RXDATA_WRAP, Link);

+      Wrap = NET_LIST_USER_STRUCT (WrapEntry, UDP4_RXDATA_WRAP, Link);

 

       if (Wrap->TimeoutTick <= UDP4_TIMEOUT_INTERVAL / 1000) {

         //

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
index 9d26b13..845b7c0 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
@@ -270,17 +270,20 @@ PxeBcDriverBindingStart (
              ControllerHandle,

              This->DriverBindingHandle,

              &gEfiUdp4ServiceBindingProtocolGuid,

-             &Private->Udp4Child

+             &Private->Udp4ReadChild

              );

 

   if (EFI_ERROR (Status)) {

     goto ON_ERROR;

   }

 

+  //

+  // The UDP instance for EfiPxeBcUdpRead

+  //

   Status = gBS->OpenProtocol (

-                  Private->Udp4Child,

+                  Private->Udp4ReadChild,

                   &gEfiUdp4ProtocolGuid,

-                  (VOID **) &Private->Udp4,

+                  (VOID **) &Private->Udp4Read,

                   This->DriverBindingHandle,

                   ControllerHandle,

                   EFI_OPEN_PROTOCOL_BY_DRIVER

@@ -290,18 +293,42 @@ PxeBcDriverBindingStart (
     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      = 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     = 10000;  // 10 milliseconds

+  Private->Udp4CfgData.ReceiveTimeout     = 50000;  // 50 milliseconds

   Private->Udp4CfgData.UseDefaultAddress  = FALSE;

 

-  PxeBcInitSeedPacket (&Private->SeedPacket, Private->Udp4);

+  PxeBcInitSeedPacket (&Private->SeedPacket, Private->Udp4Read);

   Private->MacLen = Private->SeedPacket.Dhcp4.Header.HwAddrLen;

   CopyMem (&Private->Mac, &Private->SeedPacket.Dhcp4.Header.ClientHwAddr[0], Private->MacLen);

 

@@ -330,9 +357,24 @@ PxeBcDriverBindingStart (
 

 ON_ERROR:

 

-  if (Private->Udp4Child != NULL) {

+  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->Udp4Child,

+          Private->Udp4ReadChild,

           &gEfiUdp4ProtocolGuid,

           This->DriverBindingHandle,

           ControllerHandle

@@ -341,7 +383,7 @@ ON_ERROR:
       ControllerHandle,

       This->DriverBindingHandle,

       &gEfiUdp4ServiceBindingProtocolGuid,

-      Private->Udp4Child

+      Private->Udp4ReadChild

       );

   }

 

@@ -491,7 +533,20 @@ PxeBcDriverBindingStop (
   if (!EFI_ERROR (Status)) {

 

     gBS->CloseProtocol (

-          Private->Udp4Child,

+           Private->Udp4WriteChild,

+           &gEfiUdp4ProtocolGuid,

+           This->DriverBindingHandle,

+           NicHandle

+           );

+    NetLibDestroyServiceChild (

+      ControllerHandle,

+      This->DriverBindingHandle,

+      &gEfiUdp4ServiceBindingProtocolGuid,

+      Private->Udp4WriteChild

+      );

+

+    gBS->CloseProtocol (

+          Private->Udp4ReadChild,

           &gEfiUdp4ProtocolGuid,

           This->DriverBindingHandle,

           NicHandle

@@ -500,7 +555,7 @@ PxeBcDriverBindingStop (
       NicHandle,

       This->DriverBindingHandle,

       &gEfiUdp4ServiceBindingProtocolGuid,

-      Private->Udp4Child

+      Private->Udp4ReadChild

       );

 

     gBS->CloseProtocol (

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
index c0fff3d..8fc528f 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
@@ -272,7 +272,7 @@ EfiPxeBcStart (
   //

   // Configure the udp4 instance to let it receive data

   //

-  Status = Private->Udp4->Configure (Private->Udp4, &Private->Udp4CfgData);

+  Status = Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);

   if (EFI_ERROR (Status)) {

     return Status;

   }

@@ -421,13 +421,9 @@ EfiPxeBcStop (
 

   Mode->Started = FALSE;

 

-

-  //

-  // Reset and leave joined groups

-  //

-  Private->Udp4->Groups (Private->Udp4, FALSE, NULL);

-

-  Private->Udp4->Configure (Private->Udp4, NULL);

+  Private->CurrentUdpSrcPort = 0;

+  Private->Udp4Write->Configure (Private->Udp4Write, NULL);

+  Private->Udp4Read->Configure (Private->Udp4Read, NULL);

 

   Private->Dhcp4->Stop (Private->Dhcp4);

   Private->Dhcp4->Configure (Private->Dhcp4, NULL);

@@ -1076,7 +1072,6 @@ EfiPxeBcUdpWrite (
   EFI_UDP4_SESSION_DATA     Udp4Session;

   EFI_STATUS                Status;

   BOOLEAN                   IsDone;

-  UINT16                    RandomSrcPort;

   EFI_PXE_BASE_CODE_MODE    *Mode;

   EFI_MAC_ADDRESS           TempMacAddr;

 

@@ -1106,8 +1101,11 @@ EfiPxeBcUdpWrite (
   }

 

   Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);

-  Udp4    = Private->Udp4;

+  Udp4    = Private->Udp4Write;

   Mode    = &Private->Mode;

+  if (!Mode->Started) {

+    return EFI_NOT_STARTED;

+  }

 

   if (!Private->AddressIsOk && (SrcIp == NULL)) {

     return EFI_INVALID_PARAMETER;

@@ -1125,23 +1123,25 @@ EfiPxeBcUdpWrite (
 

   Mode->IcmpErrorReceived = FALSE;

 

-  if (SrcIp == NULL) {

-    SrcIp = &Private->StationIp;

-

-    if (GatewayIp == NULL) {

-      GatewayIp = &Private->GatewayIp;

+  if ((Private->CurrentUdpSrcPort == 0) ||

+    ((SrcPort != NULL) && (*SrcPort != Private->CurrentUdpSrcPort))) {

+    //

+    // Port is changed, (re)configure the Udp4Write instance

+    //

+    if (SrcPort != NULL) {

+      Private->CurrentUdpSrcPort = *SrcPort;

     }

-  }

-

-  if ((SrcPort == NULL) || (OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT)) {

-    RandomSrcPort = (UINT16) (NET_RANDOM (NetRandomInitSeed ()) % 10000 + 1024);

-

-    if (SrcPort == NULL) {

 

-      SrcPort  = &RandomSrcPort;

-    } else {

-

-      *SrcPort = RandomSrcPort;

+    Status = PxeBcConfigureUdpWriteInstance (

+               Udp4,

+               &Private->StationIp.v4,

+               &Private->SubnetMask.v4,

+               &Private->GatewayIp.v4,

+               &Private->CurrentUdpSrcPort

+               );

+    if (EFI_ERROR (Status)) {

+      Private->CurrentUdpSrcPort = 0;

+      return EFI_INVALID_PARAMETER;

     }

   }

 

@@ -1150,8 +1150,12 @@ EfiPxeBcUdpWrite (
 

   CopyMem (&Udp4Session.DestinationAddress, DestIp, sizeof (EFI_IPv4_ADDRESS));

   Udp4Session.DestinationPort = *DestPort;

-  CopyMem (&Udp4Session.SourceAddress, SrcIp, sizeof (EFI_IPv4_ADDRESS));

-  Udp4Session.SourcePort = *SrcPort;

+  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 *) AllocatePool (sizeof (EFI_UDP4_TRANSMIT_DATA) + (FragCount - 1) * sizeof (EFI_UDP4_FRAGMENT_DATA));

@@ -1171,7 +1175,9 @@ EfiPxeBcUdpWrite (
     DataLength += (UINT32) *HeaderSize;

   }

 

-  Udp4TxData->GatewayAddress  = (EFI_IPv4_ADDRESS *) GatewayIp;

+  if (GatewayIp != NULL) {

+    Udp4TxData->GatewayAddress  = (EFI_IPv4_ADDRESS *) GatewayIp;

+  }

   Udp4TxData->UdpSessionData  = &Udp4Session;

   Udp4TxData->DataLength      = DataLength;

   Token.Packet.TxData         = Udp4TxData;

@@ -1344,7 +1350,7 @@ EfiPxeBcUdpRead (
     return EFI_INVALID_PARAMETER;

   }

 

-  if (((HeaderSize != NULL) && (*HeaderSize == 0)) || ((HeaderPtr == NULL) && (*HeaderSize != 0))) {

+  if (((HeaderSize != NULL) && (*HeaderSize == 0)) || ((HeaderSize != NULL) && (HeaderPtr == NULL))) {

     return EFI_INVALID_PARAMETER;

   }

 

@@ -1354,7 +1360,7 @@ EfiPxeBcUdpRead (
 

   Private = PXEBC_PRIVATE_DATA_FROM_PXEBC (This);

   Mode    = Private->PxeBc.Mode;

-  Udp4    = Private->Udp4;

+  Udp4    = Private->Udp4Read;

 

   if (!Mode->Started) {

     return EFI_NOT_STARTED;

@@ -1373,6 +1379,8 @@ EfiPxeBcUdpRead (
     return EFI_OUT_OF_RESOURCES;

   }

 

+TRY_AGAIN:

+

   IsDone = FALSE;

   Status = Udp4->Receive (Udp4, &Token);

   if (EFI_ERROR (Status)) {

@@ -1410,6 +1418,8 @@ EfiPxeBcUdpRead (
     }

 

     if (Matched) {

+      Matched = FALSE;

+

       //

       // Match the destination ip of the received udp dgram

       //

@@ -1510,6 +1520,10 @@ EfiPxeBcUdpRead (
     // Recycle the RxData

     //

     gBS->SignalEvent (RxData->RecycleSignal);

+

+    if (!Matched) {

+      goto TRY_AGAIN;

+    }

   }

 

 ON_EXIT:

@@ -1594,7 +1608,7 @@ EfiPxeBcSetIpFilter (
   // Clear the UDP instance configuration, all joined groups will be left

   // during the operation.

   //

-  Private->Udp4->Configure (Private->Udp4, NULL);

+  Private->Udp4Read->Configure (Private->Udp4Read, NULL);

   Private->Udp4CfgData.AcceptPromiscuous  = FALSE;

   Private->Udp4CfgData.AcceptBroadcast    = FALSE;

 

@@ -1610,7 +1624,7 @@ EfiPxeBcSetIpFilter (
     //

     // Configure the UDP instance with the new configuration.

     //

-    Status = Private->Udp4->Configure (Private->Udp4, &Private->Udp4CfgData);

+    Status = Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);

     if (EFI_ERROR (Status)) {

       return Status;

     }

@@ -1627,7 +1641,7 @@ EfiPxeBcSetIpFilter (
     //

     // Configure the UDP instance with the new configuration.

     //

-    Status = Private->Udp4->Configure (Private->Udp4, &Private->Udp4CfgData);

+    Status = Private->Udp4Read->Configure (Private->Udp4Read, &Private->Udp4CfgData);

     if (EFI_ERROR (Status)) {

       return Status;

     }

@@ -1639,7 +1653,7 @@ EfiPxeBcSetIpFilter (
           //

           // Join the mutilcast group

           //

-          Status = Private->Udp4->Groups (Private->Udp4, TRUE, &NewFilter->IpList[Index].v4);

+          Status = Private->Udp4Read->Groups (Private->Udp4Read, TRUE, &NewFilter->IpList[Index].v4);

           if (EFI_ERROR (Status)) {

             return Status;

           }

@@ -2448,7 +2462,7 @@ EfiPxeLoadFile (
   switch (Status) {

 

   case EFI_SUCCESS:

-    break;

+    return EFI_SUCCESS;

 

   case EFI_BUFFER_TOO_SMALL:

     if (Buffer != NULL) {

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
index 4fbdcad..df77c5d 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2007, Intel Corporation
+Copyright (c) 2007 - 2008, Intel Corporation                                                         
 All rights reserved. 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
@@ -64,8 +64,8 @@ struct _PXEBC_PRIVATE_DATA {
   EFI_HANDLE                                Dhcp4Child;
   EFI_HANDLE                                Ip4Child;
   EFI_HANDLE                                Mtftp4Child;
-  EFI_HANDLE                                Udp4Child;
-
+  EFI_HANDLE                                Udp4ReadChild;
+  EFI_HANDLE                                Udp4WriteChild;
 
   EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;
 
@@ -78,7 +78,9 @@ struct _PXEBC_PRIVATE_DATA {
   EFI_IP4_PROTOCOL                          *Ip4;
   EFI_IP4_CONFIG_DATA                       Ip4ConfigData;
   EFI_MTFTP4_PROTOCOL                       *Mtftp4;
-  EFI_UDP4_PROTOCOL                         *Udp4;
+  EFI_UDP4_PROTOCOL                         *Udp4Read;
+  EFI_UDP4_PROTOCOL                         *Udp4Write;
+  UINT16                                    CurrentUdpSrcPort;
   EFI_UDP4_CONFIG_DATA                      Udp4CfgData;
 
 
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
index 3b2eb5b..b49ff2d 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcMtftp.c
@@ -254,7 +254,7 @@ PxeBcTftpReadFile (
 

   if (BlockSize != NULL) {

 

-    ReqOpt[0].OptionStr = (UINT8*)mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

+    ReqOpt[0].OptionStr = (UINT8*) mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

     ReqOpt[0].ValueStr  = OptBuf;

     UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr);

     OptCnt++;

@@ -336,7 +336,7 @@ PxeBcTftpWriteFile (
 

   if (BlockSize != NULL) {

 

-    ReqOpt[0].OptionStr = (UINT8*)mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

+    ReqOpt[0].OptionStr = (UINT8*) mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

     ReqOpt[0].ValueStr  = OptBuf;

     UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr);

     OptCnt++;

@@ -410,7 +410,7 @@ PxeBcTftpReadDirectory (
 

   if (BlockSize != NULL) {

 

-    ReqOpt[0].OptionStr = (UINT8*)mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

+    ReqOpt[0].OptionStr = (UINT8*) mMtftpOptions[PXE_MTFTP_OPTION_BLKSIZE_INDEX];

     ReqOpt[0].ValueStr  = OptBuf;

     UtoA10 (*BlockSize, (CHAR8 *) ReqOpt[0].ValueStr);

     OptCnt++;

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
index 200d431..0e42b5c 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
@@ -1,6 +1,6 @@
 /** @file

 

-Copyright (c) 2007, Intel Corporation

+Copyright (c) 2007 - 2008, Intel Corporation                                                         

 All rights reserved. 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

@@ -162,6 +162,56 @@ PxeBcCommonNotify (
   *((BOOLEAN *) Context) = TRUE;

 }

 

+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

+  )

+{

+  EFI_UDP4_CONFIG_DATA  Udp4CfgData;

+  EFI_STATUS            Status;

+

+  ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData));

+

+  Udp4CfgData.ReceiveTimeout = 1000;

+  Udp4CfgData.TypeOfService  = DEFAULT_ToS;

+  Udp4CfgData.TimeToLive     = DEFAULT_TTL;

+

+  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;

+}

+

 

 /**

   Convert number to ASCII value

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
index 202f115..47c2a06 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2007, Intel Corporation
+Copyright (c) 2007 - 2008, Intel Corporation                                                         
 All rights reserved. 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
@@ -46,6 +46,14 @@ PxeBcCommonNotify (
   )
 ;
 
+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
+  );
 VOID
 CvtNum (
   IN UINTN  Number,