Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Bart De Schuymer |
247 |
53.35% |
3 |
13.64% |
| Art Haas |
89 |
19.22% |
1 |
4.55% |
| Alexey Dobriyan |
84 |
18.14% |
4 |
18.18% |
| David S. Miller |
10 |
2.16% |
1 |
4.55% |
| Eric W. Biedermann |
6 |
1.30% |
2 |
9.09% |
| Florian Westphal |
6 |
1.30% |
2 |
9.09% |
| Herbert Xu |
4 |
0.86% |
1 |
4.55% |
| Artem Savkov |
3 |
0.65% |
1 |
4.55% |
| Andrew Morton |
3 |
0.65% |
1 |
4.55% |
| Jan Engelhardt |
3 |
0.65% |
1 |
4.55% |
| Máté Eckl |
3 |
0.65% |
1 |
4.55% |
| Patrick McHardy |
2 |
0.43% |
1 |
4.55% |
| Bhumika Goyal |
1 |
0.22% |
1 |
4.55% |
| Al Viro |
1 |
0.22% |
1 |
4.55% |
| Ian Morris |
1 |
0.22% |
1 |
4.55% |
| Total |
463 |
|
22 |
|
/*
* ebtable_nat
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* April, 2002
*
*/
#include <linux/netfilter_bridge/ebtables.h>
#include <uapi/linux/netfilter_bridge.h>
#include <linux/module.h>
#define NAT_VALID_HOOKS ((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT) | \
(1 << NF_BR_POST_ROUTING))
static struct ebt_entries initial_chains[] = {
{
.name = "PREROUTING",
.policy = EBT_ACCEPT,
},
{
.name = "OUTPUT",
.policy = EBT_ACCEPT,
},
{
.name = "POSTROUTING",
.policy = EBT_ACCEPT,
}
};
static struct ebt_replace_kernel initial_table = {
.name = "nat",
.valid_hooks = NAT_VALID_HOOKS,
.entries_size = 3 * sizeof(struct ebt_entries),
.hook_entry = {
[NF_BR_PRE_ROUTING] = &initial_chains[0],
[NF_BR_LOCAL_OUT] = &initial_chains[1],
[NF_BR_POST_ROUTING] = &initial_chains[2],
},
.entries = (char *)initial_chains,
};
static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
{
if (valid_hooks & ~NAT_VALID_HOOKS)
return -EINVAL;
return 0;
}
static const struct ebt_table frame_nat = {
.name = "nat",
.table = &initial_table,
.valid_hooks = NAT_VALID_HOOKS,
.check = check,
.me = THIS_MODULE,
};
static unsigned int
ebt_nat_in(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
return ebt_do_table(skb, state, state->net->xt.frame_nat);
}
static unsigned int
ebt_nat_out(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
return ebt_do_table(skb, state, state->net->xt.frame_nat);
}
static const struct nf_hook_ops ebt_ops_nat[] = {
{
.hook = ebt_nat_out,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
.priority = NF_BR_PRI_NAT_DST_OTHER,
},
{
.hook = ebt_nat_out,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_POST_ROUTING,
.priority = NF_BR_PRI_NAT_SRC,
},
{
.hook = ebt_nat_in,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_PRE_ROUTING,
.priority = NF_BR_PRI_NAT_DST_BRIDGED,
},
};
static int __net_init frame_nat_net_init(struct net *net)
{
return ebt_register_table(net, &frame_nat, ebt_ops_nat,
&net->xt.frame_nat);
}
static void __net_exit frame_nat_net_exit(struct net *net)
{
ebt_unregister_table(net, net->xt.frame_nat, ebt_ops_nat);
}
static struct pernet_operations frame_nat_net_ops = {
.init = frame_nat_net_init,
.exit = frame_nat_net_exit,
};
static int __init ebtable_nat_init(void)
{
return register_pernet_subsys(&frame_nat_net_ops);
}
static void __exit ebtable_nat_fini(void)
{
unregister_pernet_subsys(&frame_nat_net_ops);
}
module_init(ebtable_nat_init);
module_exit(ebtable_nat_fini);
MODULE_LICENSE("GPL");