linux/net/netfilter/nfnetlink_cthelper.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * (C) 2012 Pablo Neira Ayuso <[email protected]>
 *
 * This software has been sponsored by Vyatta Inc. <http://www.vyatta.com>
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <linux/rculist.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/capability.h>
#include <net/netlink.h>
#include <net/sock.h>

#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_ecache.h>

#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_conntrack.h>
#include <linux/netfilter/nfnetlink_cthelper.h>

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

struct nfnl_cthelper { … };

static LIST_HEAD(nfnl_cthelper_list);

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

static const struct nla_policy nfnl_cthelper_tuple_pol[NFCTH_TUPLE_MAX+1] = …;

static int
nfnl_cthelper_parse_tuple(struct nf_conntrack_tuple *tuple,
			  const struct nlattr *attr)
{ … }

static int
nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
{ … }

static int
nfnl_cthelper_to_nlattr(struct sk_buff *skb, const struct nf_conn *ct)
{ … }

static const struct nla_policy nfnl_cthelper_expect_pol[NFCTH_POLICY_MAX+1] = …;

static int
nfnl_cthelper_expect_policy(struct nf_conntrack_expect_policy *expect_policy,
			    const struct nlattr *attr)
{ … }

static const struct nla_policy
nfnl_cthelper_expect_policy_set[NFCTH_POLICY_SET_MAX+1] = …;

static int
nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper,
				  const struct nlattr *attr)
{ … }

static int
nfnl_cthelper_create(const struct nlattr * const tb[],
		     struct nf_conntrack_tuple *tuple)
{ … }

static int
nfnl_cthelper_update_policy_one(const struct nf_conntrack_expect_policy *policy,
				struct nf_conntrack_expect_policy *new_policy,
				const struct nlattr *attr)
{ … }

static int nfnl_cthelper_update_policy_all(struct nlattr *tb[],
					   struct nf_conntrack_helper *helper)
{ … }

static int nfnl_cthelper_update_policy(struct nf_conntrack_helper *helper,
				       const struct nlattr *attr)
{ … }

static int
nfnl_cthelper_update(const struct nlattr * const tb[],
		     struct nf_conntrack_helper *helper)
{ … }

static int nfnl_cthelper_new(struct sk_buff *skb, const struct nfnl_info *info,
			     const struct nlattr * const tb[])
{ … }

static int
nfnl_cthelper_dump_tuple(struct sk_buff *skb,
			 struct nf_conntrack_helper *helper)
{ … }

static int
nfnl_cthelper_dump_policy(struct sk_buff *skb,
			struct nf_conntrack_helper *helper)
{ … }

static int
nfnl_cthelper_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
			int event, struct nf_conntrack_helper *helper)
{ … }

static int
nfnl_cthelper_dump_table(struct sk_buff *skb, struct netlink_callback *cb)
{ … }

static int nfnl_cthelper_get(struct sk_buff *skb, const struct nfnl_info *info,
			     const struct nlattr * const tb[])
{ … }

static int nfnl_cthelper_del(struct sk_buff *skb, const struct nfnl_info *info,
			     const struct nlattr * const tb[])
{ … }

static const struct nla_policy nfnl_cthelper_policy[NFCTH_MAX+1] = …;

static const struct nfnl_callback nfnl_cthelper_cb[NFNL_MSG_CTHELPER_MAX] = …;

static const struct nfnetlink_subsystem nfnl_cthelper_subsys = …;

MODULE_ALIAS_NFNL_SUBSYS(…);

static int __init nfnl_cthelper_init(void)
{ … }

static void __exit nfnl_cthelper_exit(void)
{ … }

module_init(…) …;
module_exit(nfnl_cthelper_exit);