--- net/sched/sch_generic.c

+++ net/sched/sch_generic.c

@@ -330,6 +330,24 @@ void netif_carrier_off(struct net_device

}

EXPORT_SYMBOL(netif_carrier_off);

+/**

+ * netif_notify_peers - notify network peers about existence of @dev

+ * @dev: network device

+ *

+ * Generate traffic such that interested network peers are aware of

+ * @dev, such as by generating a gratuitous ARP. This may be used when

+ * a device wants to inform the rest of the network about some sort of

+ * reconfiguration such as a failover event or virtual machine

+ * migration.

+ */

+void netif_notify_peers(struct net_device *dev)

+{

+ rtnl_lock();

+ call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev);

+ rtnl_unlock();

+}

+EXPORT_SYMBOL(netif_notify_peers);

+

/* "NOOP" scheduler: the best scheduler, recommended for all interfaces

under all circumstances. It is difficult to invent anything faster or

cheaper.