Release 4.7 net/netfilter/xt_nat.c
/*
* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
* (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.
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter.h>
#include <linux/netfilter/x_tables.h>
#include <net/netfilter/nf_nat_core.h>
static int xt_nat_checkentry_v0(const struct xt_tgchk_param *par)
{
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
if (mr->rangesize != 1) {
pr_info("%s: multiple ranges no longer supported\n",
par->target->name);
return -EINVAL;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 44 | 88.00% | 1 | 33.33% |
jozsef kadlecsik | jozsef kadlecsik | 5 | 10.00% | 1 | 33.33% |
jan engelhardt | jan engelhardt | 1 | 2.00% | 1 | 33.33% |
| Total | 50 | 100.00% | 3 | 100.00% |
static void xt_nat_convert_range(struct nf_nat_range *dst,
const struct nf_nat_ipv4_range *src)
{
memset(&dst->min_addr, 0, sizeof(dst->min_addr));
memset(&dst->max_addr, 0, sizeof(dst->max_addr));
dst->flags = src->flags;
dst->min_addr.ip = src->min_ip;
dst->max_addr.ip = src->max_ip;
dst->min_proto = src->min;
dst->max_proto = src->max;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 89 | 93.68% | 1 | 50.00% |
jozsef kadlecsik | jozsef kadlecsik | 6 | 6.32% | 1 | 50.00% |
| Total | 95 | 100.00% | 2 | 100.00% |
static unsigned int
xt_snat_target_v0(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
struct nf_nat_range range;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct;
ct = nf_ct_get(skb, &ctinfo);
NF_CT_ASSERT(ct != NULL &&
(ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
ctinfo == IP_CT_RELATED_REPLY));
xt_nat_convert_range(&range, &mr->range[0]);
return nf_nat_setup_info(ct, &range, NF_NAT_MANIP_SRC);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jozsef kadlecsik | jozsef kadlecsik | 61 | 62.89% | 1 | 14.29% |
patrick mchardy | patrick mchardy | 28 | 28.87% | 2 | 28.57% |
jan engelhardt | jan engelhardt | 5 | 5.15% | 2 | 28.57% |
herbert xu | herbert xu | 2 | 2.06% | 1 | 14.29% |
eric dumazet | eric dumazet | 1 | 1.03% | 1 | 14.29% |
| Total | 97 | 100.00% | 7 | 100.00% |
static unsigned int
xt_dnat_target_v0(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo;
struct nf_nat_range range;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct;
ct = nf_ct_get(skb, &ctinfo);
NF_CT_ASSERT(ct != NULL &&
(ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
xt_nat_convert_range(&range, &mr->range[0]);
return nf_nat_setup_info(ct, &range, NF_NAT_MANIP_DST);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jozsef kadlecsik | jozsef kadlecsik | 57 | 61.29% | 1 | 16.67% |
patrick mchardy | patrick mchardy | 30 | 32.26% | 2 | 33.33% |
jan engelhardt | jan engelhardt | 4 | 4.30% | 2 | 33.33% |
herbert xu | herbert xu | 2 | 2.15% | 1 | 16.67% |
| Total | 93 | 100.00% | 6 | 100.00% |
static unsigned int
xt_snat_target_v1(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct nf_nat_range *range = par->targinfo;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct;
ct = nf_ct_get(skb, &ctinfo);
NF_CT_ASSERT(ct != NULL &&
(ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
ctinfo == IP_CT_RELATED_REPLY));
return nf_nat_setup_info(ct, range, NF_NAT_MANIP_SRC);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 38 | 48.72% | 2 | 28.57% |
jozsef kadlecsik | jozsef kadlecsik | 30 | 38.46% | 1 | 14.29% |
jan engelhardt | jan engelhardt | 5 | 6.41% | 3 | 42.86% |
changli gao | changli gao | 5 | 6.41% | 1 | 14.29% |
| Total | 78 | 100.00% | 7 | 100.00% |
static unsigned int
xt_dnat_target_v1(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct nf_nat_range *range = par->targinfo;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct;
ct = nf_ct_get(skb, &ctinfo);
NF_CT_ASSERT(ct != NULL &&
(ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
return nf_nat_setup_info(ct, range, NF_NAT_MANIP_DST);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 41 | 55.41% | 1 | 33.33% |
jozsef kadlecsik | jozsef kadlecsik | 31 | 41.89% | 1 | 33.33% |
herbert xu | herbert xu | 2 | 2.70% | 1 | 33.33% |
| Total | 74 | 100.00% | 3 | 100.00% |
static struct xt_target xt_nat_target_reg[] __read_mostly = {
{
.name = "SNAT",
.revision = 0,
.checkentry = xt_nat_checkentry_v0,
.target = xt_snat_target_v0,
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.family = NFPROTO_IPV4,
.table = "nat",
.hooks = (1 << NF_INET_POST_ROUTING) |
(1 << NF_INET_LOCAL_IN),
.me = THIS_MODULE,
},
{
.name = "DNAT",
.revision = 0,
.checkentry = xt_nat_checkentry_v0,
.target = xt_dnat_target_v0,
.targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat),
.family = NFPROTO_IPV4,
.table = "nat",
.hooks = (1 << NF_INET_PRE_ROUTING) |
(1 << NF_INET_LOCAL_OUT),
.me = THIS_MODULE,
},
{
.name = "SNAT",
.revision = 1,
.target = xt_snat_target_v1,
.targetsize = sizeof(struct nf_nat_range),
.table = "nat",
.hooks = (1 << NF_INET_POST_ROUTING) |
(1 << NF_INET_LOCAL_IN),
.me = THIS_MODULE,
},
{
.name = "DNAT",
.revision = 1,
.target = xt_dnat_target_v1,
.targetsize = sizeof(struct nf_nat_range),
.table = "nat",
.hooks = (1 << NF_INET_PRE_ROUTING) |
(1 << NF_INET_LOCAL_OUT),
.me = THIS_MODULE,
},
};
static int __init xt_nat_init(void)
{
return xt_register_targets(xt_nat_target_reg,
ARRAY_SIZE(xt_nat_target_reg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 8 | 40.00% | 1 | 33.33% |
alexey dobriyan | alexey dobriyan | 6 | 30.00% | 1 | 33.33% |
jozsef kadlecsik | jozsef kadlecsik | 6 | 30.00% | 1 | 33.33% |
| Total | 20 | 100.00% | 3 | 100.00% |
static void __exit xt_nat_exit(void)
{
xt_unregister_targets(xt_nat_target_reg, ARRAY_SIZE(xt_nat_target_reg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 11 | 57.89% | 1 | 50.00% |
jozsef kadlecsik | jozsef kadlecsik | 8 | 42.11% | 1 | 50.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
module_init(xt_nat_init);
module_exit(xt_nat_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_ALIAS("ipt_SNAT");
MODULE_ALIAS("ipt_DNAT");
MODULE_ALIAS("ip6t_SNAT");
MODULE_ALIAS("ip6t_DNAT");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
patrick mchardy | patrick mchardy | 461 | 56.56% | 7 | 33.33% |
jozsef kadlecsik | jozsef kadlecsik | 301 | 36.93% | 1 | 4.76% |
alexey dobriyan | alexey dobriyan | 19 | 2.33% | 1 | 4.76% |
jan engelhardt | jan engelhardt | 18 | 2.21% | 8 | 38.10% |
herbert xu | herbert xu | 6 | 0.74% | 1 | 4.76% |
changli gao | changli gao | 5 | 0.61% | 1 | 4.76% |
elison niven | elison niven | 4 | 0.49% | 1 | 4.76% |
eric dumazet | eric dumazet | 1 | 0.12% | 1 | 4.76% |
| Total | 815 | 100.00% | 21 | 100.00% |
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