[PKT_SCHED]: vlan tag match

Provide a way to use tc filters on vlan tag even if tag is buried in
skb due to hardware acceleration.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h
index 1c1dba9..40fac8c 100644
--- a/include/linux/pkt_cls.h
+++ b/include/linux/pkt_cls.h
@@ -459,7 +459,8 @@
 #define	TCF_EM_U32		3
 #define	TCF_EM_META		4
 #define	TCF_EM_TEXT		5
-#define	TCF_EM_MAX		5
+#define        TCF_EM_VLAN		6
+#define	TCF_EM_MAX		6
 
 enum
 {