forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.6 KiB
73 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
#include <linux/rtnetlink.h> |
|
#include <linux/notifier.h> |
|
#include <linux/socket.h> |
|
#include <linux/kernel.h> |
|
#include <linux/export.h> |
|
#include <net/net_namespace.h> |
|
#include <net/fib_notifier.h> |
|
#include <net/netns/ipv4.h> |
|
#include <net/ip_fib.h> |
|
|
|
int call_fib4_notifier(struct notifier_block *nb, |
|
enum fib_event_type event_type, |
|
struct fib_notifier_info *info) |
|
{ |
|
info->family = AF_INET; |
|
return call_fib_notifier(nb, event_type, info); |
|
} |
|
|
|
int call_fib4_notifiers(struct net *net, enum fib_event_type event_type, |
|
struct fib_notifier_info *info) |
|
{ |
|
ASSERT_RTNL(); |
|
|
|
info->family = AF_INET; |
|
net->ipv4.fib_seq++; |
|
return call_fib_notifiers(net, event_type, info); |
|
} |
|
|
|
static unsigned int fib4_seq_read(struct net *net) |
|
{ |
|
ASSERT_RTNL(); |
|
|
|
return net->ipv4.fib_seq + fib4_rules_seq_read(net); |
|
} |
|
|
|
static int fib4_dump(struct net *net, struct notifier_block *nb, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
int err; |
|
|
|
err = fib4_rules_dump(net, nb, extack); |
|
if (err) |
|
return err; |
|
|
|
return fib_notify(net, nb, extack); |
|
} |
|
|
|
static const struct fib_notifier_ops fib4_notifier_ops_template = { |
|
.family = AF_INET, |
|
.fib_seq_read = fib4_seq_read, |
|
.fib_dump = fib4_dump, |
|
.owner = THIS_MODULE, |
|
}; |
|
|
|
int __net_init fib4_notifier_init(struct net *net) |
|
{ |
|
struct fib_notifier_ops *ops; |
|
|
|
net->ipv4.fib_seq = 0; |
|
|
|
ops = fib_notifier_ops_register(&fib4_notifier_ops_template, net); |
|
if (IS_ERR(ops)) |
|
return PTR_ERR(ops); |
|
net->ipv4.notifier_ops = ops; |
|
|
|
return 0; |
|
} |
|
|
|
void __net_exit fib4_notifier_exit(struct net *net) |
|
{ |
|
fib_notifier_ops_unregister(net->ipv4.notifier_ops); |
|
}
|
|
|