Release 4.11 net/ipv4/netfilter/arptable_filter.c
/*
* 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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 17 | 44.74% | 2 | 20.00% |
| Alexey Dobriyan | 13 | 34.21% | 2 | 20.00% |
| Eric W. Biedermann | 4 | 10.53% | 2 | 20.00% |
| Jan Engelhardt | 2 | 5.26% | 2 | 20.00% |
| Patrick McHardy | 1 | 2.63% | 1 | 10.00% |
| Herbert Xu | 1 | 2.63% | 1 | 10.00% |
| Total | 38 | 100.00% | 10 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Engelhardt | 28 | 35.90% | 1 | 14.29% |
| Florian Westphal | 26 | 33.33% | 2 | 28.57% |
| Alexey Dobriyan | 11 | 14.10% | 2 | 28.57% |
| David S. Miller | 11 | 14.10% | 1 | 14.29% |
| Harald Welte | 2 | 2.56% | 1 | 14.29% |
| Total | 78 | 100.00% | 7 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 22 | 51.16% | 2 | 66.67% |
| Alexey Dobriyan | 21 | 48.84% | 1 | 33.33% |
| Total | 43 | 100.00% | 3 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 46 | 52.87% | 2 | 33.33% |
| Alexey Dobriyan | 13 | 14.94% | 1 | 16.67% |
| Jan Engelhardt | 12 | 13.79% | 1 | 16.67% |
| David S. Miller | 12 | 13.79% | 1 | 16.67% |
| Patrick McHardy | 4 | 4.60% | 1 | 16.67% |
| Total | 87 | 100.00% | 6 | 100.00% |
static void __exit arptable_filter_fini(void)
{
unregister_pernet_subsys(&arptable_filter_net_ops);
kfree(arpfilter_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 14 | 70.00% | 1 | 25.00% |
| Florian Westphal | 4 | 20.00% | 1 | 25.00% |
| Andrew Morton | 1 | 5.00% | 1 | 25.00% |
| Jan Engelhardt | 1 | 5.00% | 1 | 25.00% |
| Total | 20 | 100.00% | 4 | 100.00% |
module_init(arptable_filter_init);
module_exit(arptable_filter_fini);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 114 | 30.24% | 3 | 10.71% |
| David S. Miller | 87 | 23.08% | 2 | 7.14% |
| Alexey Dobriyan | 71 | 18.83% | 3 | 10.71% |
| Jan Engelhardt | 56 | 14.85% | 7 | 25.00% |
| Harald Welte | 21 | 5.57% | 3 | 10.71% |
| Art Haas | 10 | 2.65% | 1 | 3.57% |
| Patrick McHardy | 6 | 1.59% | 3 | 10.71% |
| Eric W. Biedermann | 4 | 1.06% | 2 | 7.14% |
| Tejun Heo | 3 | 0.80% | 1 | 3.57% |
| Andrew Morton | 3 | 0.80% | 1 | 3.57% |
| Herbert Xu | 1 | 0.27% | 1 | 3.57% |
| Bart De Schuymer | 1 | 0.27% | 1 | 3.57% |
| Total | 377 | 100.00% | 28 | 100.00% |
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