![Konstantin Khlebnikov](/assets/img/avatar_default.png)
After commit4d3a57f23d
("netfilter: conntrack: do not enable connection tracking unless needed") conntrack is disabled by default unless some module explicitly declares dependency in particular network namespace. Fixes:a357b3f80b
("netfilter: nat: add dependencies on conntrack module") Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
78 lines
2 KiB
C
78 lines
2 KiB
C
/*
|
|
* Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Based on Rusty Russell's IPv6 MASQUERADE target. Development of IPv6
|
|
* NAT funded by Astaro.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/ipv6.h>
|
|
#include <linux/netfilter.h>
|
|
#include <linux/netfilter_ipv6.h>
|
|
#include <linux/netfilter/x_tables.h>
|
|
#include <net/netfilter/nf_nat.h>
|
|
#include <net/addrconf.h>
|
|
#include <net/ipv6.h>
|
|
#include <net/netfilter/ipv6/nf_nat_masquerade.h>
|
|
|
|
static unsigned int
|
|
masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par)
|
|
{
|
|
return nf_nat_masquerade_ipv6(skb, par->targinfo, xt_out(par));
|
|
}
|
|
|
|
static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par)
|
|
{
|
|
const struct nf_nat_range *range = par->targinfo;
|
|
|
|
if (range->flags & NF_NAT_RANGE_MAP_IPS)
|
|
return -EINVAL;
|
|
return nf_ct_netns_get(par->net, par->family);
|
|
}
|
|
|
|
static void masquerade_tg6_destroy(const struct xt_tgdtor_param *par)
|
|
{
|
|
nf_ct_netns_put(par->net, par->family);
|
|
}
|
|
|
|
static struct xt_target masquerade_tg6_reg __read_mostly = {
|
|
.name = "MASQUERADE",
|
|
.family = NFPROTO_IPV6,
|
|
.checkentry = masquerade_tg6_checkentry,
|
|
.destroy = masquerade_tg6_destroy,
|
|
.target = masquerade_tg6,
|
|
.targetsize = sizeof(struct nf_nat_range),
|
|
.table = "nat",
|
|
.hooks = 1 << NF_INET_POST_ROUTING,
|
|
.me = THIS_MODULE,
|
|
};
|
|
|
|
static int __init masquerade_tg6_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = xt_register_target(&masquerade_tg6_reg);
|
|
if (err == 0)
|
|
nf_nat_masquerade_ipv6_register_notifier();
|
|
|
|
return err;
|
|
}
|
|
static void __exit masquerade_tg6_exit(void)
|
|
{
|
|
nf_nat_masquerade_ipv6_unregister_notifier();
|
|
xt_unregister_target(&masquerade_tg6_reg);
|
|
}
|
|
|
|
module_init(masquerade_tg6_init);
|
|
module_exit(masquerade_tg6_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
|
|
MODULE_DESCRIPTION("Xtables: automatic address SNAT");
|