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1b402f7ebf
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071859.749329557@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
2 KiB
C
79 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* (C) 2011 Pablo Neira Ayuso <pablo@netfilter.org>
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* (C) 2011 Intra2net AG <http://www.intra2net.com>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netfilter/x_tables.h>
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#include <linux/netfilter/nfnetlink_acct.h>
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#include <linux/netfilter/xt_nfacct.h>
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MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
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MODULE_DESCRIPTION("Xtables: match for the extended accounting infrastructure");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_nfacct");
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MODULE_ALIAS("ip6t_nfacct");
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static bool nfacct_mt(const struct sk_buff *skb, struct xt_action_param *par)
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{
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int overquota;
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const struct xt_nfacct_match_info *info = par->targinfo;
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nfnl_acct_update(skb, info->nfacct);
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overquota = nfnl_acct_overquota(xt_net(par), info->nfacct);
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return overquota == NFACCT_UNDERQUOTA ? false : true;
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}
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static int
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nfacct_mt_checkentry(const struct xt_mtchk_param *par)
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{
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struct xt_nfacct_match_info *info = par->matchinfo;
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struct nf_acct *nfacct;
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nfacct = nfnl_acct_find_get(par->net, info->name);
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if (nfacct == NULL) {
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pr_info_ratelimited("accounting object `%s' does not exists\n",
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info->name);
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return -ENOENT;
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}
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info->nfacct = nfacct;
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return 0;
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}
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static void
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nfacct_mt_destroy(const struct xt_mtdtor_param *par)
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{
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const struct xt_nfacct_match_info *info = par->matchinfo;
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nfnl_acct_put(info->nfacct);
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}
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static struct xt_match nfacct_mt_reg __read_mostly = {
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.name = "nfacct",
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.family = NFPROTO_UNSPEC,
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.checkentry = nfacct_mt_checkentry,
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.match = nfacct_mt,
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.destroy = nfacct_mt_destroy,
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.matchsize = sizeof(struct xt_nfacct_match_info),
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.usersize = offsetof(struct xt_nfacct_match_info, nfacct),
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.me = THIS_MODULE,
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};
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static int __init nfacct_mt_init(void)
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{
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return xt_register_match(&nfacct_mt_reg);
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}
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static void __exit nfacct_mt_exit(void)
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{
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xt_unregister_match(&nfacct_mt_reg);
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}
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module_init(nfacct_mt_init);
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module_exit(nfacct_mt_exit);
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