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/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
*
* 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.
*/
#include <linux/types.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_timeout.h>
static const unsigned int nf_ct_generic_timeout = 600*HZ;
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_cttimeout.h>
static int generic_timeout_nlattr_to_obj(struct nlattr *tb[],
struct net *net, void *data)
{
struct nf_generic_net *gn = nf_generic_pernet(net);
unsigned int *timeout = data;
if (!timeout)
timeout = &gn->timeout;
if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT])
*timeout =
ntohl(nla_get_be32(tb[CTA_TIMEOUT_GENERIC_TIMEOUT])) * HZ;
else {
/* Set default generic timeout. */
*timeout = gn->timeout;
}
return 0;
}
static int
generic_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
{
const unsigned int *timeout = data;
if (nla_put_be32(skb, CTA_TIMEOUT_GENERIC_TIMEOUT, htonl(*timeout / HZ)))
goto nla_put_failure;
return 0;
nla_put_failure:
return -ENOSPC;
}
static const struct nla_policy
generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = {
[CTA_TIMEOUT_GENERIC_TIMEOUT] = { .type = NLA_U32 },
};
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
void nf_conntrack_generic_init_net(struct net *net)
{
struct nf_generic_net *gn = nf_generic_pernet(net);
gn->timeout = nf_ct_generic_timeout;
}
const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
{
.l4proto = 255,
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
.ctnl_timeout = {
.nlattr_to_obj = generic_timeout_nlattr_to_obj,
.obj_to_nlattr = generic_timeout_obj_to_nlattr,
.nlattr_max = CTA_TIMEOUT_GENERIC_MAX,
.obj_size = sizeof(unsigned int),
.nla_policy = generic_timeout_nla_policy,
},
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
};
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