diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/devinet.c | 1 | ||||
| -rw-r--r-- | net/sched/sch_generic.c | 18 |
2 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 382bc768ed5..da14c49284f 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1081,6 +1081,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event, } ip_mc_up(in_dev); /* fall through */ + case NETDEV_NOTIFY_PEERS: case NETDEV_CHANGEADDR: /* Send gratuitous ARP to notify of link change */ if (IN_DEV_ARP_NOTIFY(in_dev)) { diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index a63029ef3ed..bd1892fe4b2 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -327,6 +327,24 @@ void netif_carrier_off(struct net_device *dev) } 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. |