drivers/net/net_failover.c

74 	struct net_device *slave_dev;
78 	slave_dev = rtnl_dereference(nfo_info->primary_dev);
79 	if (slave_dev)
80 		dev_close(slave_dev);
82 	slave_dev = rtnl_dereference(nfo_info->standby_dev);
83 	if (slave_dev)
84 		dev_close(slave_dev);
184 	struct net_device *slave_dev;
191 	slave_dev = rcu_dereference(nfo_info->primary_dev);
192 	if (slave_dev) {
193 		new = dev_get_stats(slave_dev, &temp);
198 	slave_dev = rcu_dereference(nfo_info->standby_dev);
199 	if (slave_dev) {
200 		new = dev_get_stats(slave_dev, &temp);
242 	struct net_device *slave_dev;
246 	slave_dev = rcu_dereference(nfo_info->primary_dev);
247 	if (slave_dev) {
248 		dev_uc_sync_multiple(slave_dev, dev);
249 		dev_mc_sync_multiple(slave_dev, dev);
252 	slave_dev = rcu_dereference(nfo_info->standby_dev);
253 	if (slave_dev) {
254 		dev_uc_sync_multiple(slave_dev, dev);
255 		dev_mc_sync_multiple(slave_dev, dev);
290 	struct net_device *slave_dev;
292 	slave_dev = rcu_dereference(nfo_info->primary_dev);
293 	if (slave_dev)
294 		vlan_vid_del(slave_dev, proto, vid);
296 	slave_dev = rcu_dereference(nfo_info->standby_dev);
297 	if (slave_dev)
298 		vlan_vid_del(slave_dev, proto, vid);
331 	struct net_device *slave_dev;
333 	slave_dev = rtnl_dereference(nfo_info->primary_dev);
334 	if (!slave_dev || !net_failover_xmit_ready(slave_dev)) {
335 		slave_dev = rtnl_dereference(nfo_info->standby_dev);
336 		if (!slave_dev || !net_failover_xmit_ready(slave_dev)) {
345 	return __ethtool_get_link_ksettings(slave_dev, cmd);
431 static void net_failover_lower_state_changed(struct net_device *slave_dev,
437 	if (netif_carrier_ok(slave_dev))
442 	if (slave_dev == primary_dev) {
455 	netdev_lower_state_changed(slave_dev, &info);
458 static int net_failover_slave_pre_register(struct net_device *slave_dev,
468 	slave_is_standby = slave_dev->dev.parent == failover_dev->dev.parent;
471 			   slave_dev->name,
480 	if (!slave_is_standby && (!slave_dev->dev.parent ||
481 				  !dev_is_pci(slave_dev->dev.parent)))
494 static int net_failover_slave_register(struct net_device *slave_dev,
504 	orig_mtu = slave_dev->mtu;
505 	err = dev_set_mtu(slave_dev, failover_dev->mtu);
508 			   slave_dev->name, failover_dev->mtu);
512 	dev_hold(slave_dev);
515 		err = dev_open(slave_dev, NULL);
518 				   slave_dev->name, err);
524 	dev_uc_sync_multiple(slave_dev, failover_dev);
525 	dev_mc_sync_multiple(slave_dev, failover_dev);
528 	err = vlan_vids_add_by_dev(slave_dev, failover_dev);
531 			   slave_dev->name, err);
538 	slave_is_standby = slave_dev->dev.parent == failover_dev->dev.parent;
541 		rcu_assign_pointer(nfo_info->standby_dev, slave_dev);
542 		standby_dev = slave_dev;
545 		rcu_assign_pointer(nfo_info->primary_dev, slave_dev);
546 		primary_dev = slave_dev;
548 		failover_dev->min_mtu = slave_dev->min_mtu;
549 		failover_dev->max_mtu = slave_dev->max_mtu;
552 	net_failover_lower_state_changed(slave_dev, primary_dev, standby_dev);
555 	call_netdevice_notifiers(NETDEV_JOIN, slave_dev);
558 		    slave_is_standby ? "standby" : "primary", slave_dev->name);
563 	dev_uc_unsync(slave_dev, failover_dev);
564 	dev_mc_unsync(slave_dev, failover_dev);
565 	dev_close(slave_dev);
567 	dev_put(slave_dev);
568 	dev_set_mtu(slave_dev, orig_mtu);
573 static int net_failover_slave_pre_unregister(struct net_device *slave_dev,
583 	if (slave_dev != primary_dev && slave_dev != standby_dev)
589 static int net_failover_slave_unregister(struct net_device *slave_dev,
600 	if (WARN_ON_ONCE(slave_dev != primary_dev && slave_dev != standby_dev))
603 	vlan_vids_del_by_dev(slave_dev, failover_dev);
604 	dev_uc_unsync(slave_dev, failover_dev);
605 	dev_mc_unsync(slave_dev, failover_dev);
606 	dev_close(slave_dev);
611 	slave_is_standby = slave_dev->dev.parent == failover_dev->dev.parent;
622 	dev_put(slave_dev);
627 		    slave_is_standby ? "standby" : "primary", slave_dev->name);
632 static int net_failover_slave_link_change(struct net_device *slave_dev,
643 	if (slave_dev != primary_dev && slave_dev != standby_dev)
656 	net_failover_lower_state_changed(slave_dev, primary_dev, standby_dev);
661 static int net_failover_slave_name_change(struct net_device *slave_dev,
672 	if (slave_dev != primary_dev && slave_dev != standby_dev)
678 	dev_open(slave_dev, NULL);
792 	struct net_device *slave_dev;
804 	slave_dev = rtnl_dereference(nfo_info->primary_dev);
805 	if (slave_dev)
806 		failover_slave_unregister(slave_dev);
808 	slave_dev = rtnl_dereference(nfo_info->standby_dev);
809 	if (slave_dev)
810 		failover_slave_unregister(slave_dev);