Contributors: 18
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
194 |
35.14% |
14 |
25.45% |
| Florian Westphal |
137 |
24.82% |
5 |
9.09% |
| Patrick McHardy |
82 |
14.86% |
8 |
14.55% |
| Jan Engelhardt |
48 |
8.70% |
11 |
20.00% |
| Art Haas |
22 |
3.99% |
1 |
1.82% |
| Arturo Borrero Gonzalez |
17 |
3.08% |
2 |
3.64% |
| Harald Welte |
14 |
2.54% |
3 |
5.45% |
| Taehee Yoo |
13 |
2.36% |
1 |
1.82% |
| Pablo Neira Ayuso |
9 |
1.63% |
1 |
1.82% |
| Rusty Russell |
5 |
0.91% |
1 |
1.82% |
| Jozsef Kadlecsik |
2 |
0.36% |
1 |
1.82% |
| Thomas Gleixner |
2 |
0.36% |
1 |
1.82% |
| Herbert Xu |
2 |
0.36% |
1 |
1.82% |
| Phil Oester |
1 |
0.18% |
1 |
1.82% |
| Thierry Du Tre |
1 |
0.18% |
1 |
1.82% |
| Konstantin Khlebnikov |
1 |
0.18% |
1 |
1.82% |
| Linus Torvalds |
1 |
0.18% |
1 |
1.82% |
| Américo Wang |
1 |
0.18% |
1 |
1.82% |
| Total |
552 |
|
55 |
|
// SPDX-License-Identifier: GPL-2.0-only
/* Masquerade. Simple mapping which alters range to a local IP address
(depending on route). */
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/netfilter/x_tables.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_masquerade.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
MODULE_DESCRIPTION("Xtables: automatic-address SNAT");
/* FIXME: Multiple targets. --RR */
static int masquerade_tg_check(const struct xt_tgchk_param *par)
{
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
if (mr->range[0].flags & NF_NAT_RANGE_MAP_IPS) {
pr_debug("bad MAP_IPS.\n");
return -EINVAL;
}
if (mr->rangesize != 1) {
pr_debug("bad rangesize %u\n", mr->rangesize);
return -EINVAL;
}
return nf_ct_netns_get(par->net, par->family);
}
static unsigned int
masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_nat_range2 range;
const struct nf_nat_ipv4_multi_range_compat *mr;
mr = par->targinfo;
range.flags = mr->range[0].flags;
range.min_proto = mr->range[0].min;
range.max_proto = mr->range[0].max;
return nf_nat_masquerade_ipv4(skb, xt_hooknum(par), &range,
xt_out(par));
}
static void masquerade_tg_destroy(const struct xt_tgdtor_param *par)
{
nf_ct_netns_put(par->net, par->family);
}
#if IS_ENABLED(CONFIG_IPV6)
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_range2 *range = par->targinfo;
if (range->flags & NF_NAT_RANGE_MAP_IPS)
return -EINVAL;
return nf_ct_netns_get(par->net, par->family);
}
#endif
static struct xt_target masquerade_tg_reg[] __read_mostly = {
{
#if IS_ENABLED(CONFIG_IPV6)
.name = "MASQUERADE",
.family = NFPROTO_IPV6,
.target = masquerade_tg6,
.targetsize = sizeof(struct nf_nat_range),
.table = "nat",
.hooks = 1 << NF_INET_POST_ROUTING,
.checkentry = masquerade_tg6_checkentry,
.destroy = masquerade_tg_destroy,
.me = THIS_MODULE,
}, {
#endif
.name = "MASQUERADE",
.family = NFPROTO_IPV4,
.target = masquerade_tg,
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.table = "nat",
.hooks = 1 << NF_INET_POST_ROUTING,
.checkentry = masquerade_tg_check,
.destroy = masquerade_tg_destroy,
.me = THIS_MODULE,
}
};
static int __init masquerade_tg_init(void)
{
int ret;
ret = xt_register_targets(masquerade_tg_reg,
ARRAY_SIZE(masquerade_tg_reg));
if (ret)
return ret;
ret = nf_nat_masquerade_inet_register_notifiers();
if (ret) {
xt_unregister_targets(masquerade_tg_reg,
ARRAY_SIZE(masquerade_tg_reg));
return ret;
}
return ret;
}
static void __exit masquerade_tg_exit(void)
{
xt_unregister_targets(masquerade_tg_reg, ARRAY_SIZE(masquerade_tg_reg));
nf_nat_masquerade_inet_unregister_notifiers();
}
module_init(masquerade_tg_init);
module_exit(masquerade_tg_exit);
#if IS_ENABLED(CONFIG_IPV6)
MODULE_ALIAS("ip6t_MASQUERADE");
#endif
MODULE_ALIAS("ipt_MASQUERADE");