Release 4.11 net/ipv6/netfilter/ip6table_filter.c
/*
* This is the 1999 rewrite of IP Firewalling, aiming for kernel 2.3.x.
*
* Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
* Copyright (C) 2000-2004 Netfilter Core Team <coreteam@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <linux/slab.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
MODULE_DESCRIPTION("ip6tables filter table");
#define FILTER_VALID_HOOKS ((1 << NF_INET_LOCAL_IN) | \
(1 << NF_INET_FORWARD) | \
(1 << NF_INET_LOCAL_OUT))
static int __net_init ip6table_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_IPV6,
.priority = NF_IP6_PRI_FILTER,
.table_init = ip6table_filter_table_init,
};
/* The work comes in here from netfilter.c. */
static unsigned int
ip6table_filter_hook(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
return ip6t_do_table(skb, state, state->net->ipv6.ip6table_filter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Dobriyan | 16 | 42.11% | 2 | 20.00% |
| Linus Torvalds (pre-git) | 11 | 28.95% | 1 | 10.00% |
| Eric W. Biedermann | 4 | 10.53% | 2 | 20.00% |
| David S. Miller | 3 | 7.89% | 1 | 10.00% |
| Jan Engelhardt | 2 | 5.26% | 2 | 20.00% |
| Herbert Xu | 1 | 2.63% | 1 | 10.00% |
| Patrick McHardy | 1 | 2.63% | 1 | 10.00% |
| Total | 38 | 100.00% | 10 | 100.00% |
static struct nf_hook_ops *filter_ops __read_mostly;
/* Default to forward because I got too much mail already. */
static bool forward = true;
module_param(forward, bool, 0000);
static int __net_init ip6table_filter_table_init(struct net *net)
{
struct ip6t_replace *repl;
int err;
if (net->ipv6.ip6table_filter)
return 0;
repl = ip6t_alloc_initial_table(&packet_filter);
if (repl == NULL)
return -ENOMEM;
/* Entry 1 is the FORWARD hook */
((struct ip6t_standard *)repl->entries)[1].target.verdict =
forward ? -NF_ACCEPT - 1 : -NF_DROP - 1;
err = ip6t_register_table(net, &packet_filter, repl, filter_ops,
&net->ipv6.ip6table_filter);
kfree(repl);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Engelhardt | 51 | 46.79% | 1 | 20.00% |
| Florian Westphal | 26 | 23.85% | 2 | 40.00% |
| Alexey Dobriyan | 24 | 22.02% | 1 | 20.00% |
| Rusty Russell | 8 | 7.34% | 1 | 20.00% |
| Total | 109 | 100.00% | 5 | 100.00% |
static int __net_init ip6table_filter_net_init(struct net *net)
{
if (net == &init_net || !forward)
return ip6table_filter_table_init(net);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
static void __net_exit ip6table_filter_net_exit(struct net *net)
{
if (!net->ipv6.ip6table_filter)
return;
ip6t_unregister_table(net, net->ipv6.ip6table_filter, filter_ops);
net->ipv6.ip6table_filter = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Dobriyan | 23 | 53.49% | 2 | 50.00% |
| Florian Westphal | 20 | 46.51% | 2 | 50.00% |
| Total | 43 | 100.00% | 4 | 100.00% |
static struct pernet_operations ip6table_filter_net_ops = {
.init = ip6table_filter_net_init,
.exit = ip6table_filter_net_exit,
};
static int __init ip6table_filter_init(void)
{
int ret;
filter_ops = xt_hook_ops_alloc(&packet_filter, ip6table_filter_hook);
if (IS_ERR(filter_ops))
return PTR_ERR(filter_ops);
ret = register_pernet_subsys(&ip6table_filter_net_ops);
if (ret < 0)
kfree(filter_ops);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 25 | 43.86% | 1 | 16.67% |
| Florian Westphal | 16 | 28.07% | 1 | 16.67% |
| Jan Engelhardt | 12 | 21.05% | 1 | 16.67% |
| Alexey Dobriyan | 2 | 3.51% | 1 | 16.67% |
| Patrick McHardy | 1 | 1.75% | 1 | 16.67% |
| Andrew Morton | 1 | 1.75% | 1 | 16.67% |
| Total | 57 | 100.00% | 6 | 100.00% |
static void __exit ip6table_filter_fini(void)
{
unregister_pernet_subsys(&ip6table_filter_net_ops);
kfree(filter_ops);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 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(ip6table_filter_init);
module_exit(ip6table_filter_fini);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 113 | 26.28% | 2 | 6.45% |
| Linus Torvalds (pre-git) | 91 | 21.16% | 1 | 3.23% |
| Alexey Dobriyan | 83 | 19.30% | 3 | 9.68% |
| Jan Engelhardt | 76 | 17.67% | 7 | 22.58% |
| Harald Welte | 27 | 6.28% | 4 | 12.90% |
| Rusty Russell | 10 | 2.33% | 2 | 6.45% |
| Art Haas | 10 | 2.33% | 1 | 3.23% |
| Eric W. Biedermann | 4 | 0.93% | 2 | 6.45% |
| Patrick McHardy | 4 | 0.93% | 4 | 12.90% |
| Andrew Morton | 4 | 0.93% | 1 | 3.23% |
| David S. Miller | 3 | 0.70% | 1 | 3.23% |
| Tejun Heo | 3 | 0.70% | 1 | 3.23% |
| Herbert Xu | 1 | 0.23% | 1 | 3.23% |
| Linus Torvalds | 1 | 0.23% | 1 | 3.23% |
| Total | 430 | 100.00% | 31 | 100.00% |
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