1. Add EFI_COMPONENT_NAME2_PROTOCOL.GetControllerName() support.

2. Fix the driver binding Stop() hang issue in the network stack.
3. Add Ip4 raw data support.
4. Add iSCSI Dhcp option 60 support.

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@13995 6f19259b-4bc3-4df7-8a09-765794883524

NetworkPkg/Mtftp6Dxe/Mtftp6Rrq.c

@@ -453,6 +453,7 @@ Mtftp6RrqHandleOack (
   MTFTP6_EXT_OPTION_INFO    ExtInfo;
   EFI_STATUS                Status;
   INTN                      Expected;
+  EFI_UDP6_PROTOCOL         *Udp6;
 
   *IsCompleted = FALSE;
 
@@ -555,6 +556,21 @@ Mtftp6RrqHandleOack (
                                  UDP_IO_UDP6_VERSION,
                                  Instance
                                  );
+        if (Instance->McastUdpIo != NULL) {
+          Status = gBS->OpenProtocol (
+                          Instance->McastUdpIo->UdpHandle,
+                          &gEfiUdp6ProtocolGuid,
+                          (VOID **) &Udp6,
+                          Instance->Service->Image,
+                          Instance->Handle,
+                          EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+                          );
+          if (EFI_ERROR (Status)) {
+            UdpIoFreeIo (Instance->McastUdpIo);
+            Instance->McastUdpIo = NULL;
+            return EFI_DEVICE_ERROR;
+          }
+        }
       }
 
       if (Instance->McastUdpIo == NULL) {