1. Fix buffer overflow bugs in SNP, MNP and IP6 driver.

2. Fix GCC build fail issue in DxeNetLib.

Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Ouyang Qian <qian.ouyang@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14017 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Library/DxeNetLib/DxeNetLib.c

@@ -1154,6 +1154,7 @@ NetDestroyLinkList (
 
 **/
 BOOLEAN
+EFIAPI
 NetIsInHandleBuffer (
   IN  EFI_HANDLE          Handle,
   IN  UINTN               NumberOfChildren,

MdeModulePkg/Universal/Network/MnpDxe/ComponentName.c

@@ -148,7 +148,7 @@ UpdateName (
     for (Index = 0; Index < SnpModeData.HwAddressSize; Index++) {
       OffSet += UnicodeSPrint (
                   HandleName + OffSet,
-                  sizeof (HandleName) - OffSet,
+                  sizeof (HandleName) - OffSet * sizeof (CHAR16),
                   L"%02X-",
                   SnpModeData.CurrentAddress.Addr[Index]
                   );
@@ -162,7 +162,7 @@ UpdateName (
     //
     OffSet += UnicodeSPrint (
                 HandleName + OffSet,
-                sizeof (HandleName) - OffSet,
+                sizeof (HandleName) - OffSet * sizeof (CHAR16),
                 L", ProtocolType=0x%X, VlanId=%d)",
                 MnpConfigData.ProtocolTypeFilter,
                 Instance->MnpServiceData->VlanId

MdeModulePkg/Universal/Network/SnpDxe/ComponentName.c

@@ -266,7 +266,7 @@ UpdateName (
   for (Index = 0; Index < Snp->Mode->HwAddressSize; Index++) {
     OffSet += UnicodeSPrint (
                 HandleName + OffSet,
-                sizeof (HandleName) - OffSet,
+                sizeof (HandleName) - OffSet * sizeof (CHAR16),
                 L"%02X-",
                 Snp->Mode->CurrentAddress.Addr[Index]
                 );
@@ -276,8 +276,8 @@ UpdateName (
   //
   OffSet--;
   OffSet += UnicodeSPrint (
-              HandleName,
-              sizeof (HandleName),
+              HandleName + OffSet,
+              sizeof (HandleName) - OffSet * sizeof (CHAR16),
               L")"
               );
   if (gSimpleNetworkControllerNameTable != NULL) {

NetworkPkg/Ip6Dxe/ComponentName.c

@@ -280,7 +280,7 @@ UpdateName (
     }
     UnicodeSPrint (
       HandleName + Offset,
-      sizeof(HandleName) - Offset,
+      sizeof(HandleName) - Offset * sizeof (CHAR16),
       L"DestinationAddress=%s)",
       Address
       );