vlan: 64 bit rx counters

Use u64_stats_sync infrastructure to implement 64bit rx stats.

(tx stats are addressed later)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 6abdcac..8d9503a 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -2,6 +2,7 @@
 #define __BEN_VLAN_802_1Q_INC__
 
 #include <linux/if_vlan.h>
+#include <linux/u64_stats_sync.h>
 
 
 /**
@@ -21,14 +22,16 @@
  *	struct vlan_rx_stats - VLAN percpu rx stats
  *	@rx_packets: number of received packets
  *	@rx_bytes: number of received bytes
- *	@multicast: number of received multicast packets
+ *	@rx_multicast: number of received multicast packets
+ *	@syncp: synchronization point for 64bit counters
  *	@rx_errors: number of errors
  */
 struct vlan_rx_stats {
-	unsigned long rx_packets;
-	unsigned long rx_bytes;
-	unsigned long multicast;
-	unsigned long rx_errors;
+	u64			rx_packets;
+	u64			rx_bytes;
+	u64			rx_multicast;
+	struct u64_stats_sync	syncp;
+	unsigned long		rx_errors;
 };
 
 /**