mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 17:59:32 +00:00
![Pablo Neira Ayuso](/assets/img/avatar_default.png)
This patch adds the match that allows to perform extended accounting. It requires the new nfnetlink_acct infrastructure. # iptables -I INPUT -p tcp --sport 80 -m nfacct --nfacct-name http-traffic # iptables -I OUTPUT -p tcp --dport 80 -m nfacct --nfacct-name http-traffic Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
|
|
* (C) 2011 Pablo Neira Ayuso <pablo@netfilter.org>
|
|
* (C) 2011 Intra2net AG <http://www.intra2net.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 (or any
|
|
* later at your option) as published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <linux/netfilter/x_tables.h>
|
|
#include <linux/netfilter/nfnetlink_acct.h>
|
|
#include <linux/netfilter/xt_nfacct.h>
|
|
|
|
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
|
|
MODULE_DESCRIPTION("Xtables: match for the extended accounting infrastructure");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("ipt_nfacct");
|
|
MODULE_ALIAS("ip6t_nfacct");
|
|
|
|
static bool nfacct_mt(const struct sk_buff *skb, struct xt_action_param *par)
|
|
{
|
|
const struct xt_nfacct_match_info *info = par->targinfo;
|
|
|
|
nfnl_acct_update(skb, info->nfacct);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
nfacct_mt_checkentry(const struct xt_mtchk_param *par)
|
|
{
|
|
struct xt_nfacct_match_info *info = par->matchinfo;
|
|
struct nf_acct *nfacct;
|
|
|
|
nfacct = nfnl_acct_find_get(info->name);
|
|
if (nfacct == NULL) {
|
|
pr_info("xt_nfacct: accounting object with name `%s' "
|
|
"does not exists\n", info->name);
|
|
return -ENOENT;
|
|
}
|
|
info->nfacct = nfacct;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
nfacct_mt_destroy(const struct xt_mtdtor_param *par)
|
|
{
|
|
const struct xt_nfacct_match_info *info = par->matchinfo;
|
|
|
|
nfnl_acct_put(info->nfacct);
|
|
}
|
|
|
|
static struct xt_match nfacct_mt_reg __read_mostly = {
|
|
.name = "nfacct",
|
|
.family = NFPROTO_UNSPEC,
|
|
.checkentry = nfacct_mt_checkentry,
|
|
.match = nfacct_mt,
|
|
.destroy = nfacct_mt_destroy,
|
|
.matchsize = sizeof(struct xt_nfacct_match_info),
|
|
.me = THIS_MODULE,
|
|
};
|
|
|
|
static int __init nfacct_mt_init(void)
|
|
{
|
|
return xt_register_match(&nfacct_mt_reg);
|
|
}
|
|
|
|
static void __exit nfacct_mt_exit(void)
|
|
{
|
|
xt_unregister_match(&nfacct_mt_reg);
|
|
}
|
|
|
|
module_init(nfacct_mt_init);
|
|
module_exit(nfacct_mt_exit);
|