X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fdp_dev.c;h=2bbd6fecf8d05a52f851b3562b2ad9663a1fbff8;hb=a4230dedddd1909f84947b9c6cdf88a23e10a301;hp=284a6b520861e506b2d4aeb8c5a3177e8254b9b1;hpb=3f355f47f8e7343e909ccfa854454d667baf3c38;p=openvswitch

diff --git a/datapath/dp_dev.c b/datapath/dp_dev.c
index 284a6b52..2bbd6fec 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;
 }
 
@@ -209,8 +214,8 @@ do_setup(struct net_device *netdev)
 	netdev->dev_addr[1] = 0x23;
 	netdev->dev_addr[2] = 0x20;
 
-	/* Set the top bits to indicate random Nicira address. */
-	netdev->dev_addr[3] |= 0xc0;
+	/* Set the top bit to indicate random Nicira address. */
+	netdev->dev_addr[3] |= 0x80;
 }
 
 /* Create a datapath device associated with 'dp'.  If 'dp_name' is null,