Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Florian Westphal |
114 |
30.16% |
3 |
10.34% |
| David S. Miller |
87 |
23.02% |
2 |
6.90% |
| Alexey Dobriyan |
71 |
18.78% |
3 |
10.34% |
| Jan Engelhardt |
56 |
14.81% |
7 |
24.14% |
| Harald Welte |
21 |
5.56% |
3 |
10.34% |
| Art Haas |
10 |
2.65% |
1 |
3.45% |
| Patrick McHardy |
6 |
1.59% |
3 |
10.34% |
| Eric W. Biedermann |
4 |
1.06% |
2 |
6.90% |
| Andrew Morton |
3 |
0.79% |
1 |
3.45% |
| Tejun Heo |
3 |
0.79% |
1 |
3.45% |
| Bart De Schuymer |
1 |
0.26% |
1 |
3.45% |
| Thomas Gleixner |
1 |
0.26% |
1 |
3.45% |
| Herbert Xu |
1 |
0.26% |
1 |
3.45% |
| Total |
378 |
|
29 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Filtering ARP tables module.
*
* Copyright (C) 2002 David S. Miller (davem@redhat.com)
*
*/
#include <linux/module.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_arp/arp_tables.h>
#include <linux/slab.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
MODULE_DESCRIPTION("arptables filter table");
#define FILTER_VALID_HOOKS ((1 << NF_ARP_IN) | (1 << NF_ARP_OUT) | \
(1 << NF_ARP_FORWARD))
static int __net_init arptable_filter_table_init(struct net *net);
static const struct xt_table packet_filter = {
.name = "filter",
.valid_hooks = FILTER_VALID_HOOKS,
.me = THIS_MODULE,
.af = NFPROTO_ARP,
.priority = NF_IP_PRI_FILTER,
.table_init = arptable_filter_table_init,
};
/* The work comes in here from netfilter.c */
static unsigned int
arptable_filter_hook(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
return arpt_do_table(skb, state, state->net->ipv4.arptable_filter);
}
static struct nf_hook_ops *arpfilter_ops __read_mostly;
static int __net_init arptable_filter_table_init(struct net *net)
{
struct arpt_replace *repl;
int err;
if (net->ipv4.arptable_filter)
return 0;
repl = arpt_alloc_initial_table(&packet_filter);
if (repl == NULL)
return -ENOMEM;
err = arpt_register_table(net, &packet_filter, repl, arpfilter_ops,
&net->ipv4.arptable_filter);
kfree(repl);
return err;
}
static void __net_exit arptable_filter_net_exit(struct net *net)
{
if (!net->ipv4.arptable_filter)
return;
arpt_unregister_table(net, net->ipv4.arptable_filter, arpfilter_ops);
net->ipv4.arptable_filter = NULL;
}
static struct pernet_operations arptable_filter_net_ops = {
.exit = arptable_filter_net_exit,
};
static int __init arptable_filter_init(void)
{
int ret;
arpfilter_ops = xt_hook_ops_alloc(&packet_filter, arptable_filter_hook);
if (IS_ERR(arpfilter_ops))
return PTR_ERR(arpfilter_ops);
ret = register_pernet_subsys(&arptable_filter_net_ops);
if (ret < 0) {
kfree(arpfilter_ops);
return ret;
}
ret = arptable_filter_table_init(&init_net);
if (ret) {
unregister_pernet_subsys(&arptable_filter_net_ops);
kfree(arpfilter_ops);
}
return ret;
}
static void __exit arptable_filter_fini(void)
{
unregister_pernet_subsys(&arptable_filter_net_ops);
kfree(arpfilter_ops);
}
module_init(arptable_filter_init);
module_exit(arptable_filter_fini);