1. Update the UdpIo to a combined UdpIo to support both v4 and v6 stack.

2. Update Dhcp4 and Mtftp4 driver to adopt the combined UdpIo.
3. Clean up coding style problems in combined IpIoLib/NetLib. Update Tcp4 and Udp4 to adopt the changes.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9382 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Driver.h

@@ -1,7 +1,7 @@
 /** @file
   Tcp driver function header.
 
-Copyright (c) 2005 - 2006, Intel Corporation<BR>
+Copyright (c) 2005 - 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
 which accompanies this distribution.  The full text of the license may be found at
@@ -78,7 +78,7 @@ typedef struct _TCP4_PROTO_DATA {
 VOID
 Tcp4RxCallback (
   IN EFI_STATUS                       Status,
-  IN ICMP_ERROR                       IcmpErr,
+  IN UINT8                            IcmpErr,
   IN EFI_NET_SESSION_DATA             *NetSession,
   IN NET_BUF                          *Pkt,
   IN VOID                             *Context    OPTIONAL