From: Simon Horman <horms@verge.net.au>
Date: Mon, 23 Aug 2010 06:30:09 +0000 (+0900)
Subject: datapath: Take a rcu_dereference() in netdev_get_vport()
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f59a10a8b676546d120136e20445212c848e7c95;p=openvswitch

datapath: Take a rcu_dereference() in netdev_get_vport()

Although not strictly necessary, this will make this
function more consistent when compatibility for 2.6.36 is added.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Jesse Gross <jesse@nicira.com>
---

diff --git a/datapath/vport-netdev.c b/datapath/vport-netdev.c
index 39e963e0..e6045354 100644
--- a/datapath/vport-netdev.c
+++ b/datapath/vport-netdev.c
@@ -304,7 +304,7 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 /* Returns null if this device is not attached to a datapath. */
 struct vport *netdev_get_vport(struct net_device *dev)
 {
-	return (struct vport *)dev->br_port;
+	return (struct vport *)rcu_dereference(dev->br_port);
 }
 
 struct vport_ops netdev_vport_ops = {