linux/net/ipv4/netfilter/iptable_filter.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * This is the 1999 rewrite of IP Firewalling, aiming for kernel 2.3.x.
 *
 * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
 * Copyright (C) 2000-2004 Netfilter Core Team <[email protected]>
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/slab.h>
#include <net/ip.h>

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

#define FILTER_VALID_HOOKS …

static const struct xt_table packet_filter = …;

static struct nf_hook_ops *filter_ops __read_mostly;

/* Default to forward because I got too much mail already. */
static bool forward __read_mostly = …;
module_param(forward, bool, 0000);

static int iptable_filter_table_init(struct net *net)
{ … }

static int __net_init iptable_filter_net_init(struct net *net)
{ … }

static void __net_exit iptable_filter_net_pre_exit(struct net *net)
{ … }

static void __net_exit iptable_filter_net_exit(struct net *net)
{ … }

static struct pernet_operations iptable_filter_net_ops = …;

static int __init iptable_filter_init(void)
{ … }

static void __exit iptable_filter_fini(void)
{ … }

module_init(…) …;
module_exit(iptable_filter_fini);