+ err = register_netdevice_notifier(&fib_rules_notifier);
+ if (err < 0)
+ goto fail;
+
+ err = register_pernet_subsys(&fib_rules_net_ops);
+ if (err < 0)
+ goto fail_unregister;
+ return 0;
+
+fail_unregister:
+ unregister_netdevice_notifier(&fib_rules_notifier);
+fail:
+ rtnl_unregister(PF_UNSPEC, RTM_NEWRULE);
+ rtnl_unregister(PF_UNSPEC, RTM_DELRULE);
+ rtnl_unregister(PF_UNSPEC, RTM_GETRULE);
+ return err;