net: link_watch: mark bonding link events urgent

It takes 1sec for bond link down notification to hit user-space
when all slaves of the bond go down. 1sec is too long for
protocol daemons in user-space relying on bond notification
to recover (eg: multichassis lag implementations in user-space).
Since the link event code already marks team device port link events
 as urgent, this patch moves the code to cover all lag ports and master.
Signed-off-by: NRoopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/link_watch.c

@@ -92,7 +92,7 @@ static bool linkwatch_urgent_event(struct net_device *dev)
 	if (dev->ifindex != dev_get_iflink(dev))
 		return true;
 
-	if (dev->priv_flags & IFF_TEAM_PORT)
+	if (netif_is_lag_port(dev) || netif_is_lag_master(dev))
 		return true;
 
 	return netif_carrier_ok(dev) &&	qdisc_tx_changing(dev);