1 #include <linux/notifier.h> 2 #include <linux/socket.h> 3 #include <linux/kernel.h> 4 #include <linux/export.h> 5 #include <net/net_namespace.h> 6 #include <net/fib_notifier.h> 7 #include <net/netns/ipv6.h> 8 #include <net/ip6_fib.h> 9 10 int call_fib6_notifier(struct notifier_block *nb, struct net *net, 11 enum fib_event_type event_type, 12 struct fib_notifier_info *info) 13 { 14 info->family = AF_INET6; 15 return call_fib_notifier(nb, net, event_type, info); 16 } 17 18 int call_fib6_notifiers(struct net *net, enum fib_event_type event_type, 19 struct fib_notifier_info *info) 20 { 21 info->family = AF_INET6; 22 return call_fib_notifiers(net, event_type, info); 23 } 24 25 static unsigned int fib6_seq_read(struct net *net) 26 { 27 return fib6_tables_seq_read(net) + fib6_rules_seq_read(net); 28 } 29 30 static int fib6_dump(struct net *net, struct notifier_block *nb) 31 { 32 int err; 33 34 err = fib6_rules_dump(net, nb); 35 if (err) 36 return err; 37 38 return fib6_tables_dump(net, nb); 39 } 40 41 static const struct fib_notifier_ops fib6_notifier_ops_template = { 42 .family = AF_INET6, 43 .fib_seq_read = fib6_seq_read, 44 .fib_dump = fib6_dump, 45 .owner = THIS_MODULE, 46 }; 47 48 int __net_init fib6_notifier_init(struct net *net) 49 { 50 struct fib_notifier_ops *ops; 51 52 ops = fib_notifier_ops_register(&fib6_notifier_ops_template, net); 53 if (IS_ERR(ops)) 54 return PTR_ERR(ops); 55 net->ipv6.notifier_ops = ops; 56 57 return 0; 58 } 59 60 void __net_exit fib6_notifier_exit(struct net *net) 61 { 62 fib_notifier_ops_unregister(net->ipv6.notifier_ops); 63 } 64