[Change summary]:

1. Update NetLib to a combined NetLib support dual network stack:
1) Add Network Debug facility for IPv4 stack.
2) Extend the library APIs to support IPv6 stack:
   a. NetIp6IsUnspecifiedAddr
   b. NetIp6IsLinkLocalAddr   
   c. NetIp6IsNetEqual
   d. NetLibCreateIPv6DPathNode.
   e. NetIp6PseudoHeadChecksum
   f. NetIp6IsValidUnicast
3) Update the structure definitions:
   a. Update NET_BUF to add EFI_IP6_HEADER and EFI_UDP_HEADER
   b. Add NET_IP6_PSEUDO_HDR
4) Update Ip4IsUnicast to NetIp4IsUnicast

2. Update the impacted modules to adopt the combined NetLib.

3. Clean up coding style errors in all network drivers and libraries.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9391 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Impl.h

@@ -48,20 +48,18 @@ typedef struct _MTFTP4_PROTOCOL MTFTP4_PROTOCOL;
 ///
 /// Some constant value of Mtftp service.
 ///
-typedef enum {
-  MTFTP4_SERVICE_SIGNATURE   = SIGNATURE_32 ('T', 'F', 'T', 'P'),
-  MTFTP4_PROTOCOL_SIGNATURE  = SIGNATURE_32 ('t', 'f', 't', 'p'),
+#define MTFTP4_SERVICE_SIGNATURE    SIGNATURE_32 ('T', 'F', 'T', 'P')
+#define MTFTP4_PROTOCOL_SIGNATURE   SIGNATURE_32 ('t', 'f', 't', 'p')
 
-  MTFTP4_DEFAULT_SERVER_PORT = 69,
-  MTFTP4_DEFAULT_TIMEOUT     = 3,
-  MTFTP4_DEFAULT_RETRY       = 5,
-  MTFTP4_DEFAULT_BLKSIZE     = 512,
-  MTFTP4_TIME_TO_GETMAP      = 5,
+#define MTFTP4_DEFAULT_SERVER_PORT  69
+#define MTFTP4_DEFAULT_TIMEOUT      3
+#define MTFTP4_DEFAULT_RETRY        5
+#define MTFTP4_DEFAULT_BLKSIZE      512
+#define MTFTP4_TIME_TO_GETMAP       5
 
-  MTFTP4_STATE_UNCONFIGED    = 0,
-  MTFTP4_STATE_CONFIGED,
-  MTFTP4_STATE_DESTORY
-} MTFTP4_SERVICE_CONST_VALUE;
+#define MTFTP4_STATE_UNCONFIGED     0
+#define MTFTP4_STATE_CONFIGED       1
+#define MTFTP4_STATE_DESTORY        2
 
 ///
 /// Mtftp service block