Release 4.11 net/netfilter/xt_CONNSECMARK.c
/*
* This module is used to copy security markings from packets
* to connections, and restore security markings from connections
* back to packets. This would normally be performed in conjunction
* with the SECMARK target and state match.
*
* Based somewhat on CONNMARK:
* Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
* by Henrik Nordstrom <hno@marasystems.com>
*
* (C) 2006,2008 Red Hat, Inc., James Morris <jmorris@redhat.com>
*
* 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.
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_CONNSECMARK.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_ecache.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("James Morris <jmorris@redhat.com>");
MODULE_DESCRIPTION("Xtables: target for copying between connection and security mark");
MODULE_ALIAS("ipt_CONNSECMARK");
MODULE_ALIAS("ip6t_CONNSECMARK");
/*
* If the packet has a security mark and the connection does not, copy
* the security mark from the packet to the connection.
*/
static void secmark_save(const struct sk_buff *skb)
{
if (skb->secmark) {
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
ct = nf_ct_get(skb, &ctinfo);
if (ct && !ct->secmark) {
ct->secmark = skb->secmark;
nf_conntrack_event_cache(IPCT_SECMARK, ct);
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 43 | 66.15% | 1 | 20.00% |
Patrick McHardy | 12 | 18.46% | 1 | 20.00% |
Pablo Neira Ayuso | 8 | 12.31% | 1 | 20.00% |
Jan Engelhardt | 1 | 1.54% | 1 | 20.00% |
Alexey Dobriyan | 1 | 1.54% | 1 | 20.00% |
Total | 65 | 100.00% | 5 | 100.00% |
/*
* If packet has no security mark, and the connection does, restore the
* security mark from the connection to the packet.
*/
static void secmark_restore(struct sk_buff *skb)
{
if (!skb->secmark) {
const struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
ct = nf_ct_get(skb, &ctinfo);
if (ct && ct->secmark)
skb->secmark = ct->secmark;
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 43 | 76.79% | 1 | 33.33% |
Patrick McHardy | 12 | 21.43% | 1 | 33.33% |
Jan Engelhardt | 1 | 1.79% | 1 | 33.33% |
Total | 56 | 100.00% | 3 | 100.00% |
static unsigned int
connsecmark_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct xt_connsecmark_target_info *info = par->targinfo;
switch (info->mode) {
case CONNSECMARK_SAVE:
secmark_save(skb);
break;
case CONNSECMARK_RESTORE:
secmark_restore(skb);
break;
default:
BUG();
}
return XT_CONTINUE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 55 | 90.16% | 1 | 20.00% |
Jan Engelhardt | 5 | 8.20% | 3 | 60.00% |
Herbert Xu | 1 | 1.64% | 1 | 20.00% |
Total | 61 | 100.00% | 5 | 100.00% |
static int connsecmark_tg_check(const struct xt_tgchk_param *par)
{
const struct xt_connsecmark_target_info *info = par->targinfo;
int ret;
if (strcmp(par->table, "mangle") != 0 &&
strcmp(par->table, "security") != 0) {
pr_info("target only valid in the \'mangle\' "
"or \'security\' tables, not \'%s\'.\n", par->table);
return -EINVAL;
}
switch (info->mode) {
case CONNSECMARK_SAVE:
case CONNSECMARK_RESTORE:
break;
default:
pr_info("invalid mode: %hu\n", info->mode);
return -EINVAL;
}
ret = nf_ct_netns_get(par->net, par->family);
if (ret < 0)
pr_info("cannot load conntrack support for proto=%u\n",
par->family);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jan Engelhardt | 61 | 48.80% | 8 | 72.73% |
James Morris | 59 | 47.20% | 2 | 18.18% |
Florian Westphal | 5 | 4.00% | 1 | 9.09% |
Total | 125 | 100.00% | 11 | 100.00% |
static void connsecmark_tg_destroy(const struct xt_tgdtor_param *par)
{
nf_ct_netns_put(par->net, par->family);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Yasuyuki Kozakai | 13 | 56.52% | 1 | 25.00% |
Florian Westphal | 5 | 21.74% | 1 | 25.00% |
Jan Engelhardt | 5 | 21.74% | 2 | 50.00% |
Total | 23 | 100.00% | 4 | 100.00% |
static struct xt_target connsecmark_tg_reg __read_mostly = {
.name = "CONNSECMARK",
.revision = 0,
.family = NFPROTO_UNSPEC,
.checkentry = connsecmark_tg_check,
.destroy = connsecmark_tg_destroy,
.target = connsecmark_tg,
.targetsize = sizeof(struct xt_connsecmark_target_info),
.me = THIS_MODULE,
};
static int __init connsecmark_tg_init(void)
{
return xt_register_target(&connsecmark_tg_reg);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 11 | 68.75% | 1 | 25.00% |
Jan Engelhardt | 4 | 25.00% | 2 | 50.00% |
Patrick McHardy | 1 | 6.25% | 1 | 25.00% |
Total | 16 | 100.00% | 4 | 100.00% |
static void __exit connsecmark_tg_exit(void)
{
xt_unregister_target(&connsecmark_tg_reg);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 10 | 66.67% | 1 | 25.00% |
Jan Engelhardt | 4 | 26.67% | 2 | 50.00% |
Patrick McHardy | 1 | 6.67% | 1 | 25.00% |
Total | 15 | 100.00% | 4 | 100.00% |
module_init(connsecmark_tg_init);
module_exit(connsecmark_tg_exit);
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
James Morris | 307 | 64.50% | 2 | 8.33% |
Jan Engelhardt | 98 | 20.59% | 14 | 58.33% |
Patrick McHardy | 31 | 6.51% | 3 | 12.50% |
Yasuyuki Kozakai | 17 | 3.57% | 1 | 4.17% |
Pablo Neira Ayuso | 11 | 2.31% | 1 | 4.17% |
Florian Westphal | 10 | 2.10% | 1 | 4.17% |
Herbert Xu | 1 | 0.21% | 1 | 4.17% |
Alexey Dobriyan | 1 | 0.21% | 1 | 4.17% |
Total | 476 | 100.00% | 24 | 100.00% |
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