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, 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, 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 struct netlink_ext_ack *extack) 32 { 33 int err; 34 35 err = fib6_rules_dump(net, nb, extack); 36 if (err) 37 return err; 38 39 return fib6_tables_dump(net, nb, extack); 40 } 41 42 static const struct fib_notifier_ops fib6_notifier_ops_template = { 43 .family = AF_INET6, 44 .fib_seq_read = fib6_seq_read, 45 .fib_dump = fib6_dump, 46 .owner = THIS_MODULE, 47 }; 48 49 int __net_init fib6_notifier_init(struct net *net) 50 { 51 struct fib_notifier_ops *ops; 52 53 ops = fib_notifier_ops_register(&fib6_notifier_ops_template, net); 54 if (IS_ERR(ops)) 55 return PTR_ERR(ops); 56 net->ipv6.notifier_ops = ops; 57 58 return 0; 59 } 60 61 void __net_exit fib6_notifier_exit(struct net *net) 62 { 63 fib_notifier_ops_unregister(net->ipv6.notifier_ops); 64 } 65