linux/net/ipv6/netfilter/ip6t_rpfilter.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2011 Florian Westphal <[email protected]>
 */
#define pr_fmt(fmt) …
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/route.h>
#include <net/ip6_fib.h>
#include <net/ip6_route.h>

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

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

static bool rpfilter_addr_unicast(const struct in6_addr *addr)
{ … }

static bool rpfilter_addr_linklocal(const struct in6_addr *addr)
{ … }

static bool rpfilter_lookup_reverse6(struct net *net, const struct sk_buff *skb,
				     const struct net_device *dev, u8 flags)
{ … }

static bool
rpfilter_is_loopback(const struct sk_buff *skb, const struct net_device *in)
{ … }

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

static int rpfilter_check(const struct xt_mtchk_param *par)
{ … }

static struct xt_match rpfilter_mt_reg __read_mostly = …;

static int __init rpfilter_mt_init(void)
{ … }

static void __exit rpfilter_mt_exit(void)
{ … }

module_init(…) …;
module_exit(rpfilter_mt_exit);