linux/net/sched/act_nat.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Stateless NAT actions
 *
 * Copyright (c) 2007 Herbert Xu <[email protected]>
 */

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netfilter.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/tc_act/tc_nat.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>
#include <net/icmp.h>
#include <net/ip.h>
#include <net/netlink.h>
#include <net/tc_act/tc_nat.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/tc_wrapper.h>

static struct tc_action_ops act_nat_ops;

static const struct nla_policy nat_policy[TCA_NAT_MAX + 1] = …;

static int tcf_nat_init(struct net *net, struct nlattr *nla, struct nlattr *est,
			struct tc_action **a, struct tcf_proto *tp,
			u32 flags, struct netlink_ext_ack *extack)
{ … }

TC_INDIRECT_SCOPE int tcf_nat_act(struct sk_buff *skb,
				  const struct tc_action *a,
				  struct tcf_result *res)
{ … }

static int tcf_nat_dump(struct sk_buff *skb, struct tc_action *a,
			int bind, int ref)
{ … }

static void tcf_nat_cleanup(struct tc_action *a)
{ … }

static struct tc_action_ops act_nat_ops = …;
MODULE_ALIAS_NET_ACT(…) …;

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

static void __net_exit nat_exit_net(struct list_head *net_list)
{ … }

static struct pernet_operations nat_net_ops = …;

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

static int __init nat_init_module(void)
{ … }

static void __exit nat_cleanup_module(void)
{ … }

module_init(…) …;
module_exit(nat_cleanup_module);