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, 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
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{
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
41static 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
48int __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
60void __net_exit fib6_notifier_exit(struct net *net)
61{
62	fib_notifier_ops_unregister(net->ipv6.notifier_ops);
63}