linux/net/netfilter/xt_policy.c

// SPDX-License-Identifier: GPL-2.0-only
/* IP tables module for matching IPsec policy
 *
 * Copyright (c) 2004,2005 Patrick McHardy, <[email protected]>
 */
#define pr_fmt(fmt) …
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <net/xfrm.h>

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

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

static inline bool
xt_addr_cmp(const union nf_inet_addr *a1, const union nf_inet_addr *m,
	    const union nf_inet_addr *a2, unsigned short family)
{ … }

static bool
match_xfrm_state(const struct xfrm_state *x, const struct xt_policy_elem *e,
		 unsigned short family)
{ … }

static int
match_policy_in(const struct sk_buff *skb, const struct xt_policy_info *info,
		unsigned short family)
{ … }

static int
match_policy_out(const struct sk_buff *skb, const struct xt_policy_info *info,
		 unsigned short family)
{ … }

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

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

static struct xt_match policy_mt_reg[] __read_mostly = …;

static int __init policy_mt_init(void)
{ … }

static void __exit policy_mt_exit(void)
{ … }

module_init(…) …;
module_exit(policy_mt_exit);
MODULE_ALIAS(…) …;
MODULE_ALIAS(…) …;