[BRIDGE]: set features based on enslaved devices

Make features of the bridge pseudo-device be a subset of the underlying
devices.  Motivated by Xen and others who use bridging to do failover.

Signed-off-by: Catalin BOIE <catab at umrella.ro>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 8 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index d9b72fde433c..f564ee99782d 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -21,10 +21,7 @@
 
 static struct net_device_stats *br_dev_get_stats(struct net_device *dev)
 {
-        struct net_bridge *br;
-
-        br = dev->priv;
-
+        struct net_bridge *br = netdev_priv(dev);
         return &br->statistics;
 }
 
@@ -54,9 +51,11 @@ int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 
 static int br_dev_open(struct net_device *dev)
 {
-        netif_start_queue(dev);
+        struct net_bridge *br = netdev_priv(dev);
 
-        br_stp_enable_bridge(dev->priv);
+        br_features_recompute(br);
+        netif_start_queue(dev);
+        br_stp_enable_bridge(br);
 
         return 0;
 }
@@ -67,7 +66,7 @@ static void br_dev_set_multicast_list(struct net_device *dev)
 
 static int br_dev_stop(struct net_device *dev)
 {
-        br_stp_disable_bridge(dev->priv);
+        br_stp_disable_bridge(netdev_priv(dev));
 
         netif_stop_queue(dev);
 
@@ -76,7 +75,7 @@ static int br_dev_stop(struct net_device *dev)
 
 static int br_change_mtu(struct net_device *dev, int new_mtu)
 {
-        if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv))
+        if (new_mtu < 68 || new_mtu > br_min_mtu(netdev_priv(dev)))
                 return -EINVAL;
 
         dev->mtu = new_mtu;