36 static unsigned char default_operstate(const struct net_device *dev)  in default_operstate()  argument
38 	if (netif_testing(dev))  in default_operstate()
44 	if (!netif_carrier_ok(dev)) {  in default_operstate()
45 		int iflink = dev_get_iflink(dev);  in default_operstate()
48 		if (iflink == dev->ifindex)  in default_operstate()
51 		peer = __dev_get_by_index(dev_net(dev), iflink);  in default_operstate()
59 	if (netif_dormant(dev))  in default_operstate()
66 static void rfc2863_policy(struct net_device *dev)  in rfc2863_policy()  argument
68 	unsigned char operstate = default_operstate(dev);  in rfc2863_policy()
70 	if (operstate == READ_ONCE(dev->operstate))  in rfc2863_policy()
75 	switch(dev->link_mode) {  in rfc2863_policy()
90 	WRITE_ONCE(dev->operstate, operstate);  in rfc2863_policy()
96 void linkwatch_init_dev(struct net_device *dev)  in linkwatch_init_dev()  argument
99 	if (!netif_carrier_ok(dev) || netif_dormant(dev) ||  in linkwatch_init_dev()
100 	    netif_testing(dev))  in linkwatch_init_dev()
101 		rfc2863_policy(dev);  in linkwatch_init_dev()
105 static bool linkwatch_urgent_event(struct net_device *dev)  in linkwatch_urgent_event()  argument
107 	if (!netif_running(dev))  in linkwatch_urgent_event()
110 	if (dev->ifindex != dev_get_iflink(dev))  in linkwatch_urgent_event()
113 	if (netif_is_lag_port(dev) || netif_is_lag_master(dev))  in linkwatch_urgent_event()
116 	return netif_carrier_ok(dev) &&	qdisc_tx_changing(dev);  in linkwatch_urgent_event()
120 static void linkwatch_add_event(struct net_device *dev)  in linkwatch_add_event()  argument
125 	if (list_empty(&dev->link_watch_list)) {  in linkwatch_add_event()
126 		list_add_tail(&dev->link_watch_list, &lweventlist);  in linkwatch_add_event()
127 		netdev_hold(dev, &dev->linkwatch_dev_tracker, GFP_ATOMIC);  in linkwatch_add_event()
162 static void linkwatch_do_dev(struct net_device *dev)  in linkwatch_do_dev()  argument
173 	clear_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state);  in linkwatch_do_dev()
175 	rfc2863_policy(dev);  in linkwatch_do_dev()
176 	if (dev->flags & IFF_UP) {  in linkwatch_do_dev()
177 		if (netif_carrier_ok(dev))  in linkwatch_do_dev()
178 			dev_activate(dev);  in linkwatch_do_dev()
180 			dev_deactivate(dev);  in linkwatch_do_dev()
182 		netdev_state_change(dev);  in linkwatch_do_dev()
187 	__dev_put(dev);  in linkwatch_do_dev()
195 	struct net_device *dev;  in __linkwatch_run_queue()  local
222 		dev = list_first_entry(&wrk, struct net_device, link_watch_list);  in __linkwatch_run_queue()
223 		list_del_init(&dev->link_watch_list);  in __linkwatch_run_queue()
225 		if (!netif_device_present(dev) ||  in __linkwatch_run_queue()
226 		    (urgent_only && !linkwatch_urgent_event(dev))) {  in __linkwatch_run_queue()
227 			list_add_tail(&dev->link_watch_list, &lweventlist);  in __linkwatch_run_queue()
233 		netdev_tracker_free(dev, &dev->linkwatch_dev_tracker);  in __linkwatch_run_queue()
235 		linkwatch_do_dev(dev);  in __linkwatch_run_queue()
248 void linkwatch_forget_dev(struct net_device *dev)  in linkwatch_forget_dev()  argument
254 	if (!list_empty(&dev->link_watch_list)) {  in linkwatch_forget_dev()
255 		list_del_init(&dev->link_watch_list);  in linkwatch_forget_dev()
260 		netdev_tracker_free(dev, &dev->linkwatch_dev_tracker);  in linkwatch_forget_dev()
264 		linkwatch_do_dev(dev);  in linkwatch_forget_dev()
283 void linkwatch_fire_event(struct net_device *dev)  in linkwatch_fire_event()  argument
285 	bool urgent = linkwatch_urgent_event(dev);  in linkwatch_fire_event()
287 	if (!test_and_set_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state)) {  in linkwatch_fire_event()
288 		linkwatch_add_event(dev);  in linkwatch_fire_event()