1. Fix bugs for PXE-IPv6 to accommodate the situation:

1.1 Proxy DHCP6 service and DHCP6 service on different servers.
   1.2 Proxy DHCP6 server with Response Delay setting.
2. Update to support percent-encoding in NBP file name in netboot6 BootFileURL.

Signed-off-by: hhuan13
Reviewed-by: xdu2, tye


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12122 6f19259b-4bc3-4df7-8a09-765794883524

NetworkPkg/UefiPxeBcDxe/PxeBcSupport.h

@@ -474,4 +474,15 @@ PxeBcUniHexToUint8 (
   IN  CHAR16               Char
   );
 
+/**
+  Calculate the elapsed time
+
+  @param[in]      Private      The pointer to PXE private data
+
+**/
+VOID
+CalcElapsedTime (
+  IN     PXEBC_PRIVATE_DATA     *Private
+  );
+
 #endif