linux/net/netfilter/nf_nat_irc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* IRC extension for TCP NAT alteration.
 *
 * (C) 2000-2001 by Harald Welte <[email protected]>
 * (C) 2004 Rusty Russell <[email protected]> IBM Corporation
 * based on a copy of RR's ip_nat_ftp.c
 */

#define pr_fmt(fmt) …

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/tcp.h>
#include <linux/kernel.h>

#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_helper.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <linux/netfilter/nf_conntrack_irc.h>

#define NAT_HELPER_NAME …

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS_NF_NAT_HELPER(…);

static struct nf_conntrack_nat_helper nat_helper_irc = …;

static unsigned int help(struct sk_buff *skb,
			 enum ip_conntrack_info ctinfo,
			 unsigned int protoff,
			 unsigned int matchoff,
			 unsigned int matchlen,
			 struct nf_conntrack_expect *exp)
{ … }

static void __exit nf_nat_irc_fini(void)
{ … }

static int __init nf_nat_irc_init(void)
{ … }

/* Prior to 2.6.11, we had a ports param.  No longer, but don't break users. */
static int warn_set(const char *val, const struct kernel_param *kp)
{ … }
module_param_call(…);

module_init(…) …;
module_exit(nf_nat_irc_fini);