linux/net/ipv4/netfilter/iptable_mangle.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/netfilter_ipv4/ip_tables.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <net/sock.h>
#include <net/route.h>
#include <linux/ip.h>
#include <net/ip.h>

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

#define MANGLE_VALID_HOOKS …

static const struct xt_table packet_mangler = …;

static unsigned int
ipt_mangle_out(void *priv, struct sk_buff *skb, const struct nf_hook_state *state)
{ … }

/* The work comes in here from netfilter.c. */
static unsigned int
iptable_mangle_hook(void *priv,
		     struct sk_buff *skb,
		     const struct nf_hook_state *state)
{ … }

static struct nf_hook_ops *mangle_ops __read_mostly;
static int iptable_mangle_table_init(struct net *net)
{ … }

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

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

static struct pernet_operations iptable_mangle_net_ops = …;

static int __init iptable_mangle_init(void)
{ … }

static void __exit iptable_mangle_fini(void)
{ … }

module_init(…) …;
module_exit(iptable_mangle_fini);