ipvlan: Support bonding events

This allows ipvlan to function properly on top of
bonds using active-backup mode.
This was implemented for macvlan in 2014 in commit
4c99125 ("macvlan: Support bonding events").

Signed-off-by: Etienne Champetier <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: champtar

drivers/net/ipvlan/ipvlan_main.c

@@ -799,6 +799,12 @@ static int ipvlan_device_event(struct notifier_block *unused,
 	case NETDEV_PRE_TYPE_CHANGE:
 		/* Forbid underlying device to change its type. */
 		return NOTIFY_BAD;
+
+	case NETDEV_NOTIFY_PEERS:
+	case NETDEV_BONDING_FAILOVER:
+	case NETDEV_RESEND_IGMP:
+		list_for_each_entry(ipvlan, &port->ipvlans, pnode)
+			call_netdevice_notifiers(event, ipvlan->dev);
 	}
 	return NOTIFY_DONE;
 }