Release 4.11 net/bridge/netfilter/ebtable_nat.c
/*
* ebtable_nat
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* April, 2002
*
*/
#include <linux/netfilter_bridge/ebtables.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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 100.00% |
static 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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 23 | 60.53% | 1 | 14.29% |
| David S. Miller | 5 | 13.16% | 1 | 14.29% |
| Alexey Dobriyan | 4 | 10.53% | 1 | 14.29% |
| Eric W. Biedermann | 3 | 7.89% | 2 | 28.57% |
| Herbert Xu | 2 | 5.26% | 1 | 14.29% |
| Patrick McHardy | 1 | 2.63% | 1 | 14.29% |
| Total | 38 | 100.00% | 7 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 23 | 60.53% | 1 | 14.29% |
| David S. Miller | 5 | 13.16% | 1 | 14.29% |
| Alexey Dobriyan | 4 | 10.53% | 1 | 14.29% |
| Eric W. Biedermann | 3 | 7.89% | 2 | 28.57% |
| Herbert Xu | 2 | 5.26% | 1 | 14.29% |
| Patrick McHardy | 1 | 2.63% | 1 | 14.29% |
| Total | 38 | 100.00% | 7 | 100.00% |
static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
{
.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)
{
net->xt.frame_nat = ebt_register_table(net, &frame_nat);
return PTR_ERR_OR_ZERO(net->xt.frame_nat);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Dobriyan | 24 | 66.67% | 3 | 60.00% |
| Bart De Schuymer | 11 | 30.56% | 1 | 20.00% |
| Rusty Russell | 1 | 2.78% | 1 | 20.00% |
| Total | 36 | 100.00% | 5 | 100.00% |
static void __net_exit frame_nat_net_exit(struct net *net)
{
ebt_unregister_table(net, net->xt.frame_nat);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Dobriyan | 23 | 100.00% | 3 | 100.00% |
| Total | 23 | 100.00% | 3 | 100.00% |
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)
{
int ret;
ret = register_pernet_subsys(&frame_nat_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
if (ret < 0)
unregister_pernet_subsys(&frame_nat_net_ops);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Dobriyan | 37 | 66.07% | 2 | 50.00% |
| Bart De Schuymer | 18 | 32.14% | 1 | 25.00% |
| Andries E. Brouwer | 1 | 1.79% | 1 | 25.00% |
| Total | 56 | 100.00% | 4 | 100.00% |
static void __exit ebtable_nat_fini(void)
{
nf_unregister_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
unregister_pernet_subsys(&frame_nat_net_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 17 | 68.00% | 1 | 25.00% |
| Alexey Dobriyan | 7 | 28.00% | 2 | 50.00% |
| Andrew Morton | 1 | 4.00% | 1 | 25.00% |
| Total | 25 | 100.00% | 4 | 100.00% |
module_init(ebtable_nat_init);
module_exit(ebtable_nat_fini);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 271 | 52.83% | 3 | 14.29% |
| Alexey Dobriyan | 120 | 23.39% | 5 | 23.81% |
| Art Haas | 89 | 17.35% | 1 | 4.76% |
| David S. Miller | 10 | 1.95% | 1 | 4.76% |
| Eric W. Biedermann | 6 | 1.17% | 2 | 9.52% |
| Herbert Xu | 4 | 0.78% | 1 | 4.76% |
| Jan Engelhardt | 3 | 0.58% | 1 | 4.76% |
| Patrick McHardy | 3 | 0.58% | 2 | 9.52% |
| Andrew Morton | 3 | 0.58% | 1 | 4.76% |
| Andries E. Brouwer | 1 | 0.19% | 1 | 4.76% |
| Rusty Russell | 1 | 0.19% | 1 | 4.76% |
| Ian Morris | 1 | 0.19% | 1 | 4.76% |
| Al Viro | 1 | 0.19% | 1 | 4.76% |
| Total | 513 | 100.00% | 21 | 100.00% |
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