linux/net/netfilter/nf_conntrack_tftp.c

// SPDX-License-Identifier: GPL-2.0-only
/* (C) 2001-2002 Magnus Boden <[email protected]>
 * (C) 2006-2012 Patrick McHardy <[email protected]>
 */

#define pr_fmt(fmt) …

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/in.h>
#include <linux/udp.h>
#include <linux/netfilter.h>

#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_tuple.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <linux/netfilter/nf_conntrack_tftp.h>

#define HELPER_NAME …

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS(…) …;
MODULE_ALIAS_NFCT_HELPER(…);

#define MAX_PORTS …
static unsigned short ports[MAX_PORTS];
static unsigned int ports_c;
module_param_array(…);
MODULE_PARM_DESC(…) …;

unsigned int (*nf_nat_tftp_hook)(struct sk_buff *skb,
				 enum ip_conntrack_info ctinfo,
				 struct nf_conntrack_expect *exp) __read_mostly;
EXPORT_SYMBOL_GPL(…);

static int tftp_help(struct sk_buff *skb,
		     unsigned int protoff,
		     struct nf_conn *ct,
		     enum ip_conntrack_info ctinfo)
{ … }

static struct nf_conntrack_helper tftp[MAX_PORTS * 2] __read_mostly;

static const struct nf_conntrack_expect_policy tftp_exp_policy = …;

static void __exit nf_conntrack_tftp_fini(void)
{ … }

static int __init nf_conntrack_tftp_init(void)
{ … }

module_init(…) …;
module_exit(nf_conntrack_tftp_fini);