[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/Include/Guid/NicIp4ConfigNvData.h

@@ -24,17 +24,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #define EFI_NIC_IP4_CONFIG_VARIABLE          L"EfiNicIp4ConfigVariable"
 
-typedef enum {
-  //
-  // Config source: dhcp or static
-  //
-  IP4_CONFIG_SOURCE_DHCP     = 0,
-  IP4_CONFIG_SOURCE_STATIC,
-  IP4_CONFIG_SOURCE_MAX,
 
-  IP4_NIC_NAME_LENGTH        = 64,
-  MAX_IP4_CONFIG_IN_VARIABLE = 16
-} IP4_CONFIG_TYPE;
+//
+// Config source: dhcp or static
+//
+#define IP4_CONFIG_SOURCE_DHCP     0
+#define IP4_CONFIG_SOURCE_STATIC   1
+#define IP4_CONFIG_SOURCE_MAX      2
+
+#define IP4_NIC_NAME_LENGTH        64
+#define MAX_IP4_CONFIG_IN_VARIABLE 16
 
 //
 // The following structures are used by drivers/applications other