1 #include <linux/rtnetlink.h>
2 #include <linux/notifier.h>
3 #include <linux/socket.h>
4 #include <linux/kernel.h>
5 #include <linux/export.h>
6 #include <net/net_namespace.h>
7 #include <net/fib_notifier.h>
8 #include <net/netns/ipv4.h>
9 #include <net/ip_fib.h>
11 int call_fib4_notifier(struct notifier_block *nb, struct net *net,
12 enum fib_event_type event_type,
13 struct fib_notifier_info *info)
15 info->family = AF_INET;
16 return call_fib_notifier(nb, net, event_type, info);
19 int call_fib4_notifiers(struct net *net, enum fib_event_type event_type,
20 struct fib_notifier_info *info)
24 info->family = AF_INET;
26 return call_fib_notifiers(net, event_type, info);
29 static unsigned int fib4_seq_read(struct net *net)
33 return net->ipv4.fib_seq + fib4_rules_seq_read(net);
36 static int fib4_dump(struct net *net, struct notifier_block *nb)
40 err = fib4_rules_dump(net, nb);
49 static const struct fib_notifier_ops fib4_notifier_ops_template = {
51 .fib_seq_read = fib4_seq_read,
52 .fib_dump = fib4_dump,
56 int __net_init fib4_notifier_init(struct net *net)
58 struct fib_notifier_ops *ops;
60 net->ipv4.fib_seq = 0;
62 ops = fib_notifier_ops_register(&fib4_notifier_ops_template, net);
65 net->ipv4.notifier_ops = ops;
70 void __net_exit fib4_notifier_exit(struct net *net)
72 fib_notifier_ops_unregister(net->ipv4.notifier_ops);