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
10int 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
18int 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
25static unsigned int fib6_seq_read(struct net *net)
26{
27	return fib6_tables_seq_read(net) + fib6_rules_seq_read(net);
28}
29
30static 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
42static 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
49int __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
61void __net_exit fib6_notifier_exit(struct net *net)
62{
63	fib_notifier_ops_unregister(net->ipv6.notifier_ops);
64}
65