23 static int rmnet_is_real_dev_registered(const struct net_device *real_dev)  in rmnet_is_real_dev_registered()  argument
25 	return rcu_access_pointer(real_dev->rx_handler) == rmnet_rx_handler;  in rmnet_is_real_dev_registered()
30 rmnet_get_port_rtnl(const struct net_device *real_dev)  in rmnet_get_port_rtnl()  argument
32 	return rtnl_dereference(real_dev->rx_handler_data);  in rmnet_get_port_rtnl()
35 static int rmnet_unregister_real_device(struct net_device *real_dev)  in rmnet_unregister_real_device()  argument
37 	struct rmnet_port *port = rmnet_get_port_rtnl(real_dev);  in rmnet_unregister_real_device()
42 	netdev_rx_handler_unregister(real_dev);  in rmnet_unregister_real_device()
46 	netdev_dbg(real_dev, "Removed from rmnet\n");  in rmnet_unregister_real_device()
50 static int rmnet_register_real_device(struct net_device *real_dev,  in rmnet_register_real_device()  argument
58 	if (rmnet_is_real_dev_registered(real_dev)) {  in rmnet_register_real_device()
59 		port = rmnet_get_port_rtnl(real_dev);  in rmnet_register_real_device()
72 	port->dev = real_dev;  in rmnet_register_real_device()
73 	rc = netdev_rx_handler_register(real_dev, rmnet_rx_handler, port);  in rmnet_register_real_device()
82 	netdev_dbg(real_dev, "registered with rmnet\n");  in rmnet_register_real_device()
88 	struct net_device *bridge_dev, *real_dev, *rmnet_dev;  in rmnet_unregister_bridge()  local
97 		real_dev = port->bridge_ep;  in rmnet_unregister_bridge()
100 		real_port = rmnet_get_port_rtnl(real_dev);  in rmnet_unregister_bridge()
120 	struct net_device *real_dev;  in rmnet_newlink()  local
132 	real_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));  in rmnet_newlink()
133 	if (!real_dev) {  in rmnet_newlink()
144 	err = rmnet_register_real_device(real_dev, extack);  in rmnet_newlink()
148 	port = rmnet_get_port_rtnl(real_dev);  in rmnet_newlink()
149 	err = rmnet_vnd_newlink(mux_id, dev, port, real_dev, ep, extack);  in rmnet_newlink()
153 	err = netdev_upper_dev_link(real_dev, dev, extack);  in rmnet_newlink()
178 	rmnet_unregister_real_device(real_dev);  in rmnet_newlink()
187 	struct net_device *real_dev, *bridge_dev;  in rmnet_dellink()  local
192 	real_dev = priv->real_dev;  in rmnet_dellink()
194 	if (!rmnet_is_real_dev_registered(real_dev))  in rmnet_dellink()
197 	real_port = rmnet_get_port_rtnl(real_dev);  in rmnet_dellink()
211 	netdev_upper_dev_unlink(real_dev, dev);  in rmnet_dellink()
212 	rmnet_unregister_real_device(real_dev);  in rmnet_dellink()
216 static void rmnet_force_unassociate_device(struct net_device *real_dev)  in rmnet_force_unassociate_device()  argument
224 	port = rmnet_get_port_rtnl(real_dev);  in rmnet_force_unassociate_device()
231 			netdev_upper_dev_unlink(real_dev, ep->egress_dev);  in rmnet_force_unassociate_device()
236 		rmnet_unregister_real_device(real_dev);  in rmnet_force_unassociate_device()
246 	struct net_device *real_dev = netdev_notifier_info_to_dev(data);  in rmnet_config_notify_cb()  local
248 	if (!rmnet_is_real_dev_registered(real_dev))  in rmnet_config_notify_cb()
253 		netdev_dbg(real_dev, "Kernel unregister\n");  in rmnet_config_notify_cb()
254 		rmnet_force_unassociate_device(real_dev);  in rmnet_config_notify_cb()
292 	struct net_device *real_dev;  in rmnet_changelink()  local
299 	real_dev = priv->real_dev;  in rmnet_changelink()
300 	if (!rmnet_is_real_dev_registered(real_dev))  in rmnet_changelink()
303 	port = rmnet_get_port_rtnl(real_dev);  in rmnet_changelink()
352 	struct net_device *real_dev;  in rmnet_fill_info()  local
356 	real_dev = priv->real_dev;  in rmnet_fill_info()
361 	if (rmnet_is_real_dev_registered(real_dev)) {  in rmnet_fill_info()
362 		port = rmnet_get_port_rtnl(real_dev);  in rmnet_fill_info()
393 struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev)  in rmnet_get_port_rcu()  argument
395 	if (rmnet_is_real_dev_registered(real_dev))  in rmnet_get_port_rcu()
396 		return rcu_dereference_bh(real_dev->rx_handler_data);  in rmnet_get_port_rcu()
418 	struct net_device *real_dev = priv->real_dev;  in rmnet_add_bridge()  local
422 	port = rmnet_get_port_rtnl(real_dev);  in rmnet_add_bridge()
457 	slave_port->bridge_ep = real_dev;  in rmnet_add_bridge()