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(tmpl: &fib6_notifier_ops_template, net); |
54 | if (IS_ERR(ptr: ops)) |
55 | return PTR_ERR(ptr: 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(ops: net->ipv6.notifier_ops); |
64 | } |
65 | |