linux/net/netfilter/xt_tcpmss.c

// SPDX-License-Identifier: GPL-2.0-only
/* Kernel module to match TCP MSS values. */

/* Copyright (C) 2000 Marc Boucher <[email protected]>
 * Portions (C) 2005 by Harald Welte <[email protected]>
 */

#include <linux/module.h>
#include <linux/skbuff.h>
#include <net/tcp.h>

#include <linux/netfilter/xt_tcpmss.h>
#include <linux/netfilter/x_tables.h>

#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>

MODULE_LICENSE(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_ALIAS(…) …;
MODULE_ALIAS(…) …;

static bool
tcpmss_mt(const struct sk_buff *skb, struct xt_action_param *par)
{ … }

static struct xt_match tcpmss_mt_reg[] __read_mostly = …;

static int __init tcpmss_mt_init(void)
{ … }

static void __exit tcpmss_mt_exit(void)
{ … }

module_init(…) …;
module_exit(tcpmss_mt_exit);