ipv6: fix the use of pcpu_tstats in sit

when read/write the 64bit data, the correct lock should be hold. Signed-off-by: Li RongQing <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
rtvt123 · Jan 2, 2014 · c3ac17c · c3ac17c
1 parent 7e03096
commit c3ac17c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
@@ -702,8 +702,10 @@ static int ipip6_rcv(struct sk_buff *skb)
 		}
 
 		tstats = this_cpu_ptr(tunnel->dev->tstats);
+		u64_stats_update_begin(&tstats->syncp);
 		tstats->rx_packets++;
 		tstats->rx_bytes += skb->len;
+		u64_stats_update_end(&tstats->syncp);
 
 		netif_rx(skb);