bridge: netpoll cleanup

Move code around so that the ifdef for NETPOLL_CONTROLLER don't have to
show up in main code path. The control functions should be in helpers
that are only compiled if needed.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_device.c

@@ -199,7 +199,7 @@ static int br_set_tx_csum(struct net_device *dev, u32 data)
 }
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
-bool br_devices_support_netpoll(struct net_bridge *br)
+static bool br_devices_support_netpoll(struct net_bridge *br)
 {
 	struct net_bridge_port *p;
 	bool ret = true;
@@ -225,9 +225,9 @@ static void br_poll_controller(struct net_device *br_dev)
 		netpoll_poll_dev(np->real_dev);
 }
 
-void br_netpoll_cleanup(struct net_device *br_dev)
+void br_netpoll_cleanup(struct net_device *dev)
 {
-	struct net_bridge *br = netdev_priv(br_dev);
+	struct net_bridge *br = netdev_priv(dev);
 	struct net_bridge_port *p, *n;
 	const struct net_device_ops *ops;
 
@@ -243,10 +243,30 @@ void br_netpoll_cleanup(struct net_device *br_dev)
 	}
 }
 
-#else
+void br_netpoll_disable(struct net_bridge *br,
+			struct net_device *dev)
+{
+	if (br_devices_support_netpoll(br))
+		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+	if (dev->netdev_ops->ndo_netpoll_cleanup)
+		dev->netdev_ops->ndo_netpoll_cleanup(dev);
+	else
+		dev->npinfo = NULL;
+}
 
-void br_netpoll_cleanup(struct net_device *br_dev)
+void br_netpoll_enable(struct net_bridge *br,
+		       struct net_device *dev)
 {
+	if (br_devices_support_netpoll(br)) {
+		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+		if (br->dev->npinfo)
+			dev->npinfo = br->dev->npinfo;
+	} else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) {
+		br->dev->priv_flags |= IFF_DISABLE_NETPOLL;
+		printk(KERN_INFO "%s:new device %s"
+			" does not support netpoll (disabling)",
+			br->dev->name, dev->name);
+	}
 }
 
 #endif

net/bridge/br_if.c

@@ -154,14 +154,7 @@ static void del_nbp(struct net_bridge_port *p)
 	kobject_uevent(&p->kobj, KOBJ_REMOVE);
 	kobject_del(&p->kobj);
 
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	if (br_devices_support_netpoll(br))
-		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
-	if (dev->netdev_ops->ndo_netpoll_cleanup)
-		dev->netdev_ops->ndo_netpoll_cleanup(dev);
-	else
-		dev->npinfo = NULL;
-#endif
+	br_netpoll_disable(br, dev);
 	call_rcu(&p->rcu, destroy_nbp_rcu);
 }
 
@@ -455,19 +448,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
 	kobject_uevent(&p->kobj, KOBJ_ADD);
 
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	if (br_devices_support_netpoll(br)) {
-		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
-		if (br->dev->npinfo)
-			dev->npinfo = br->dev->npinfo;
-	} else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) {
-		br->dev->priv_flags |= IFF_DISABLE_NETPOLL;
-		printk(KERN_INFO "New device %s does not support netpoll\n",
-			dev->name);
-		printk(KERN_INFO "Disabling netpoll for %s\n",
-			br->dev->name);
-	}
-#endif
+	br_netpoll_enable(br, dev);
 
 	return 0;
 err2:

net/bridge/br_private.h

@@ -253,8 +253,18 @@ static inline int br_is_root_bridge(const struct net_bridge *br)
 extern void br_dev_setup(struct net_device *dev);
 extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
 			       struct net_device *dev);
-extern bool br_devices_support_netpoll(struct net_bridge *br);
-extern void br_netpoll_cleanup(struct net_device *br_dev);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+extern void br_netpoll_cleanup(struct net_device *dev);
+extern void br_netpoll_enable(struct net_bridge *br,
+			      struct net_device *dev);
+extern void br_netpoll_disable(struct net_bridge *br,
+			       struct net_device *dev);
+#else
+#define br_netpoll_cleanup(br)
+#define br_netpoll_enable(br, dev)
+#define br_netpoll_disable(br, dev)
+
+#endif
 
 /* br_fdb.c */
 extern int br_fdb_init(void);