Release 4.14 net/bridge/netfilter/ebt_dnat.c
/*
* ebt_dnat
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* June, 2002
*
*/
#include <linux/module.h>
#include <net/sock.h>
#include "../br_private.h"
#include <linux/netfilter.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_nat.h>
static unsigned int
ebt_dnat_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ebt_nat_info *info = par->targinfo;
struct net_device *dev;
if (!skb_make_writable(skb, 0))
return EBT_DROP;
ether_addr_copy(eth_hdr(skb)->h_dest, info->mac);
if (is_multicast_ether_addr(info->mac)) {
if (is_broadcast_ether_addr(info->mac))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_MULTICAST;
} else {
if (xt_hooknum(par) != NF_BR_BROUTING)
dev = br_port_get_rcu(xt_in(par))->br->dev;
else
dev = xt_in(par);
if (ether_addr_equal(info->mac, dev->dev_addr))
skb->pkt_type = PACKET_HOST;
else
skb->pkt_type = PACKET_OTHERHOST;
}
return info->target;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Lüssing | 98 | 62.03% | 1 | 7.14% |
| Bart De Schuymer | 41 | 25.95% | 2 | 14.29% |
| Jan Engelhardt | 8 | 5.06% | 5 | 35.71% |
| Herbert Xu | 5 | 3.16% | 2 | 14.29% |
| Arnaldo Carvalho de Melo | 3 | 1.90% | 1 | 7.14% |
| Joonwoo Park | 2 | 1.27% | 2 | 14.29% |
| Joe Perches | 1 | 0.63% | 1 | 7.14% |
| Total | 158 | 100.00% | 14 | 100.00% |
static int ebt_dnat_tg_check(const struct xt_tgchk_param *par)
{
const struct ebt_nat_info *info = par->targinfo;
unsigned int hook_mask;
if (BASE_CHAIN && info->target == EBT_RETURN)
return -EINVAL;
hook_mask = par->hook_mask & ~(1 << NF_BR_NUMHOOKS);
if ((strcmp(par->table, "nat") != 0 ||
(hook_mask & ~((1 << NF_BR_PRE_ROUTING) |
(1 << NF_BR_LOCAL_OUT)))) &&
(strcmp(par->table, "broute") != 0 ||
hook_mask & ~(1 << NF_BR_BROUTING)))
return -EINVAL;
if (ebt_invalid_target(info->target))
return -EINVAL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 80 | 62.02% | 1 | 14.29% |
| Jan Engelhardt | 43 | 33.33% | 5 | 71.43% |
| Gao Feng | 6 | 4.65% | 1 | 14.29% |
| Total | 129 | 100.00% | 7 | 100.00% |
static struct xt_target ebt_dnat_tg_reg __read_mostly = {
.name = "dnat",
.revision = 0,
.family = NFPROTO_BRIDGE,
.hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_PRE_ROUTING) |
(1 << NF_BR_LOCAL_OUT) | (1 << NF_BR_BROUTING),
.target = ebt_dnat_tg,
.checkentry = ebt_dnat_tg_check,
.targetsize = sizeof(struct ebt_nat_info),
.me = THIS_MODULE,
};
static int __init ebt_dnat_init(void)
{
return xt_register_target(&ebt_dnat_tg_reg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 13 | 81.25% | 1 | 33.33% |
| Jan Engelhardt | 2 | 12.50% | 1 | 33.33% |
| Andrew Morton | 1 | 6.25% | 1 | 33.33% |
| Total | 16 | 100.00% | 3 | 100.00% |
static void __exit ebt_dnat_fini(void)
{
xt_unregister_target(&ebt_dnat_tg_reg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 12 | 80.00% | 1 | 33.33% |
| Jan Engelhardt | 2 | 13.33% | 1 | 33.33% |
| Andrew Morton | 1 | 6.67% | 1 | 33.33% |
| Total | 15 | 100.00% | 3 | 100.00% |
module_init(ebt_dnat_init);
module_exit(ebt_dnat_fini);
MODULE_DESCRIPTION("Ebtables: Destination MAC address translation");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Bart De Schuymer | 189 | 43.55% | 3 | 11.54% |
| Jan Engelhardt | 121 | 27.88% | 14 | 53.85% |
| Linus Lüssing | 101 | 23.27% | 1 | 3.85% |
| Herbert Xu | 7 | 1.61% | 2 | 7.69% |
| Gao Feng | 6 | 1.38% | 1 | 3.85% |
| Andrew Morton | 4 | 0.92% | 1 | 3.85% |
| Arnaldo Carvalho de Melo | 3 | 0.69% | 1 | 3.85% |
| Joonwoo Park | 2 | 0.46% | 2 | 7.69% |
| Joe Perches | 1 | 0.23% | 1 | 3.85% |
| Total | 434 | 100.00% | 26 | 100.00% |
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