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/*
* (C) 2012 by Pablo Neira Ayuso <pablo@netfilter.org>
* (C) 2012 by Vyatta Inc. <http://www.vyatta.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation (or any later at your option).
*/
#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/skbuff.h>
#include <linux/vmalloc.h>
#include <linux/stddef.h>
#include <linux/err.h>
#include <linux/percpu.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_extend.h>
#include <net/netfilter/nf_conntrack_timeout.h>
struct nf_ct_timeout *
(*nf_ct_timeout_find_get_hook)(struct net *net, const char *name) __read_mostly;
EXPORT_SYMBOL_GPL(nf_ct_timeout_find_get_hook);
void (*nf_ct_timeout_put_hook)(struct nf_ct_timeout *timeout) __read_mostly;
EXPORT_SYMBOL_GPL(nf_ct_timeout_put_hook);
static int untimeout(struct nf_conn *ct, void *timeout)
{
struct nf_conn_timeout *timeout_ext = nf_ct_timeout_find(ct);
if (timeout_ext && (!timeout || timeout_ext->timeout == timeout))
RCU_INIT_POINTER(timeout_ext->timeout, NULL);
/* We are not intended to delete this conntrack. */
return 0;
}
void nf_ct_untimeout(struct net *net, struct nf_ct_timeout *timeout)
{
nf_ct_iterate_cleanup_net(net, untimeout, timeout, 0, 0);
}
EXPORT_SYMBOL_GPL(nf_ct_untimeout);
static const struct nf_ct_ext_type timeout_extend = {
.len = sizeof(struct nf_conn_timeout),
.align = __alignof__(struct nf_conn_timeout),
.id = NF_CT_EXT_TIMEOUT,
};
int nf_conntrack_timeout_init(void)
{
int ret = nf_ct_extend_register(&timeout_extend);
if (ret < 0)
pr_err("nf_ct_timeout: Unable to register timeout extension.\n");
return ret;
}
void nf_conntrack_timeout_fini(void)
{
nf_ct_extend_unregister(&timeout_extend);
}
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