rocker: use change upper info
authorJiri Pirko <jiri@mellanox.com>
Thu, 27 Aug 2015 07:31:23 +0000 (09:31 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 27 Aug 2015 23:28:35 +0000 (16:28 -0700)
Since now information about changed upper is passed along, benefit from
that and use this info directly.

This also fixes possible issues that could happen when non-master device
is added (current code does not distinguish between master and non-master
upper device).

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/rocker/rocker.c

index 62f383c..34ac41a 100644 (file)
@@ -5326,46 +5326,61 @@ static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
        return err;
 }
 
-static int rocker_port_master_changed(struct net_device *dev)
+static int rocker_port_master_linked(struct rocker_port *rocker_port,
+                                    struct net_device *master)
+{
+       int err = 0;
+
+       if (netif_is_bridge_master(master))
+               err = rocker_port_bridge_join(rocker_port, master);
+       else if (netif_is_ovs_master(master))
+               err = rocker_port_ovs_changed(rocker_port, master);
+       return err;
+}
+
+static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
 {
-       struct rocker_port *rocker_port = netdev_priv(dev);
-       struct net_device *master = netdev_master_upper_dev_get(dev);
        int err = 0;
 
-       /* N.B: Do nothing if the type of master is not supported */
-       if (master) {
-               if (netif_is_bridge_master(master))
-                       err = rocker_port_bridge_join(rocker_port, master);
-               else if (netif_is_ovs_master(master))
-                       err = rocker_port_ovs_changed(rocker_port, master);
-       } else if (rocker_port_is_bridged(rocker_port)) {
+       if (rocker_port_is_bridged(rocker_port))
                err = rocker_port_bridge_leave(rocker_port);
-       } else if (rocker_port_is_ovsed(rocker_port)) {
+       else if (rocker_port_is_ovsed(rocker_port))
                err = rocker_port_ovs_changed(rocker_port, NULL);
-       }
-
        return err;
 }
 
 static int rocker_netdevice_event(struct notifier_block *unused,
                                  unsigned long event, void *ptr)
 {
-       struct net_device *dev;
+       struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+       struct netdev_notifier_changeupper_info *info;
+       struct rocker_port *rocker_port;
        int err;
 
+       if (!rocker_port_dev_check(dev))
+               return NOTIFY_DONE;
+
        switch (event) {
        case NETDEV_CHANGEUPPER:
-               dev = netdev_notifier_info_to_dev(ptr);
-               if (!rocker_port_dev_check(dev))
-                       return NOTIFY_DONE;
-               err = rocker_port_master_changed(dev);
-               if (err)
-                       netdev_warn(dev,
-                                   "failed to reflect master change (err %d)\n",
-                                   err);
+               info = ptr;
+               if (!info->master)
+                       goto out;
+               rocker_port = netdev_priv(dev);
+               if (info->linking) {
+                       err = rocker_port_master_linked(rocker_port,
+                                                       info->upper_dev);
+                       if (err)
+                               netdev_warn(dev, "failed to reflect master linked (err %d)\n",
+                                           err);
+               } else {
+                       err = rocker_port_master_unlinked(rocker_port);
+                       if (err)
+                               netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
+                                           err);
+               }
                break;
        }
-
+out:
        return NOTIFY_DONE;
 }