changing UDP default timeout value to 2s to improve PXE BC boot performance.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10282 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c

@@ -1,6 +1,6 @@
 /** @file
   The driver binding for UEFI PXEBC protocol.
-  
+
 Copyright (c) 2007 - 2009, Intel Corporation.<BR>
 All rights reserved. This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
@@ -60,7 +60,7 @@ PxeBcDriverEntryPoint (
   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.  
+  Supported() it must also follow these calling restrictions.
   PxeBc requires DHCP4 and MTFTP4 protocols.
 
   @param  This                Protocol instance pointer.
@@ -260,7 +260,7 @@ PxeBcDriverBindingStart (
   //
   Status = Private->Ip4->GetModeData (Private->Ip4, &Ip4ModeData, NULL, NULL);
   if (EFI_ERROR (Status)) {
-    goto ON_ERROR;  
+    goto ON_ERROR;
   }
 
   Private->Ip4MaxPacketSize = Ip4ModeData.MaxPacketSize;
@@ -320,7 +320,7 @@ PxeBcDriverBindingStart (
   // The UDP instance for EfiPxeBcUdpWrite
   //
   Status = NetLibCreateServiceChild (
-             ControllerHandle, 
+             ControllerHandle,
              This->DriverBindingHandle,
              &gEfiUdp4ServiceBindingProtocolGuid,
              &Private->Udp4WriteChild
@@ -348,7 +348,7 @@ PxeBcDriverBindingStart (
   Private->Udp4CfgData.TypeOfService      = DEFAULT_ToS;
   Private->Udp4CfgData.TimeToLive         = DEFAULT_TTL;
   Private->Udp4CfgData.DoNotFragment      = FALSE;
-  Private->Udp4CfgData.ReceiveTimeout     = 50000;  // 50 milliseconds
+  Private->Udp4CfgData.ReceiveTimeout     = PXEBC_DEFAULT_LIFETIME;
   Private->Udp4CfgData.UseDefaultAddress  = FALSE;
 
   PxeBcInitSeedPacket (&Private->SeedPacket, Private->Udp4Read);
@@ -487,7 +487,7 @@ ON_ERROR:
   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
@@ -545,7 +545,7 @@ PxeBcDriverBindingStop (
   if (EFI_ERROR (Status)) {
     return Status;
   }
-  
+
   //
   // Stop functionality of PXE Base Code protocol
   //

MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h

@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2007 - 2010, Intel Corporation.<BR>                                                         
+Copyright (c) 2007 - 2010, Intel Corporation.<BR>
 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
@@ -51,7 +51,8 @@ typedef struct _PXEBC_PRIVATE_DATA  PXEBC_PRIVATE_DATA;
 #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_PACKET_SIZE          1480
+#define PXEBC_DEFAULT_LIFETIME             2000000  // 2 seconds, unit is microsecond
 
 struct _PXEBC_PRIVATE_DATA {
   UINT32                                    Signature;
@@ -146,21 +147,21 @@ extern EFI_LOAD_FILE_PROTOCOL     mLoadFileProtocolTemplate;
 
   @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 
+  @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 
+                                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 
+                                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 
+  @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.

MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c

@@ -194,7 +194,7 @@ PxeBcConfigureUdpWriteInstance (
 
   ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData));
 
-  Udp4CfgData.ReceiveTimeout = 1000;
+  Udp4CfgData.ReceiveTimeout = PXEBC_DEFAULT_LIFETIME;
   Udp4CfgData.TypeOfService  = DEFAULT_ToS;
   Udp4CfgData.TimeToLive     = DEFAULT_TTL;
   Udp4CfgData.AllowDuplicatePort = TRUE;