1 #include <linux/notifier.h> 2 #include <linux/socket.h> 3 #include <linux/kernel.h> 4 #include <net/net_namespace.h> 5 #include <net/fib_notifier.h> 6 #include <net/netns/ipv6.h> 7 #include <net/ip6_fib.h> 8 9 int call_fib6_notifier(struct notifier_block *nb, struct net *net, 10 enum fib_event_type event_type, 11 struct fib_notifier_info *info) 12 { 13 info->family = AF_INET6; 14 return call_fib_notifier(nb, net, event_type, info); 15 } 16 17 int call_fib6_notifiers(struct net *net, enum fib_event_type event_type, 18 struct fib_notifier_info *info) 19 { 20 info->family = AF_INET6; 21 return call_fib_notifiers(net, event_type, info); 22 } 23 24 static unsigned int fib6_seq_read(struct net *net) 25 { 26 return fib6_tables_seq_read(net) + fib6_rules_seq_read(net); 27 } 28 29 static int fib6_dump(struct net *net, struct notifier_block *nb) 30 { 31 int err; 32 33 err = fib6_rules_dump(net, nb); 34 if (err) 35 return err; 36 37 return fib6_tables_dump(net, nb); 38 } 39 40 static const struct fib_notifier_ops fib6_notifier_ops_template = { 41 .family = AF_INET6, 42 .fib_seq_read = fib6_seq_read, 43 .fib_dump = fib6_dump, 44 }; 45 46 int __net_init fib6_notifier_init(struct net *net) 47 { 48 struct fib_notifier_ops *ops; 49 50 ops = fib_notifier_ops_register(&fib6_notifier_ops_template, net); 51 if (IS_ERR(ops)) 52 return PTR_ERR(ops); 53 net->ipv6.notifier_ops = ops; 54 55 return 0; 56 } 57 58 void __net_exit fib6_notifier_exit(struct net *net) 59 { 60 fib_notifier_ops_unregister(net->ipv6.notifier_ops); 61 } 62