Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
94 |
33.22% |
13 |
32.50% |
| Harald Welte |
54 |
19.08% |
6 |
15.00% |
| Jan Engelhardt |
45 |
15.90% |
10 |
25.00% |
| Pablo Neira Ayuso |
42 |
14.84% |
1 |
2.50% |
| Florian Westphal |
20 |
7.07% |
3 |
7.50% |
| Eric Dumazet |
14 |
4.95% |
1 |
2.50% |
| Patrick McHardy |
10 |
3.53% |
4 |
10.00% |
| Yasuyuki Kozakai |
2 |
0.71% |
1 |
2.50% |
| Thomas Gleixner |
2 |
0.71% |
1 |
2.50% |
| Total |
283 |
|
40 |
|
// SPDX-License-Identifier: GPL-2.0-only
/* Kernel module to match connection tracking information. */
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2005 Netfilter Core Team <coreteam@netfilter.org>
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <net/netfilter/nf_conntrack.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_state.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>");
MODULE_DESCRIPTION("ip[6]_tables connection tracking state match module");
MODULE_ALIAS("ipt_state");
MODULE_ALIAS("ip6t_state");
static bool
state_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_state_info *sinfo = par->matchinfo;
enum ip_conntrack_info ctinfo;
unsigned int statebit;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
if (ct)
statebit = XT_STATE_BIT(ctinfo);
else if (ctinfo == IP_CT_UNTRACKED)
statebit = XT_STATE_UNTRACKED;
else
statebit = XT_STATE_INVALID;
return (sinfo->statemask & statebit);
}
static int state_mt_check(const struct xt_mtchk_param *par)
{
int ret;
ret = nf_ct_netns_get(par->net, par->family);
if (ret < 0)
pr_info_ratelimited("cannot load conntrack support for proto=%u\n",
par->family);
return ret;
}
static void state_mt_destroy(const struct xt_mtdtor_param *par)
{
nf_ct_netns_put(par->net, par->family);
}
static struct xt_match state_mt_reg __read_mostly = {
.name = "state",
.family = NFPROTO_UNSPEC,
.checkentry = state_mt_check,
.match = state_mt,
.destroy = state_mt_destroy,
.matchsize = sizeof(struct xt_state_info),
.me = THIS_MODULE,
};
static int __init state_mt_init(void)
{
return xt_register_match(&state_mt_reg);
}
static void __exit state_mt_exit(void)
{
xt_unregister_match(&state_mt_reg);
}
module_init(state_mt_init);
module_exit(state_mt_exit);