X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fdp_dev.c;h=5b434c1f9a5429b21f041bd3ae9b611135ec1229;hb=f4ade10529d5a3882ff1d6937c19f5c1585eb8b1;hp=284a6b520861e506b2d4aeb8c5a3177e8254b9b1;hpb=3f355f47f8e7343e909ccfa854454d667baf3c38;p=openvswitch

diff --git a/datapath/dp_dev.c b/datapath/dp_dev.c
index 284a6b52..5b434c1f 100644
--- a/datapath/dp_dev.c
+++ b/datapath/dp_dev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
  * Distributed under the terms of the GNU GPL version 2.
  *
  * Significant portions of this file may be copied from parts of the Linux
@@ -10,6 +10,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
+#include <linux/preempt.h>
 #include <linux/rcupdate.h>
 #include <linux/skbuff.h>
 #include <linux/workqueue.h>
@@ -62,9 +63,13 @@ int dp_dev_recv(struct net_device *netdev, struct sk_buff *skb)
 	else
 		netif_rx_ni(skb);
 	netdev->last_rx = jiffies;
+
+	preempt_disable();
 	lb_stats = per_cpu_ptr(dp_dev->lstats, smp_processor_id());
 	lb_stats->rx_packets++;
 	lb_stats->rx_bytes += len;
+	preempt_enable();
+
 	return len;
 }