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44fb87f635
Now that all l4trackers are builtin, no need to use a mix of direct and indirect calls. This removes the last two users: gre and the generic l4 protocol tracker. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/* (C) 1999-2001 Paul `Rusty' Russell
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* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/types.h>
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#include <linux/jiffies.h>
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#include <linux/timer.h>
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#include <linux/netfilter.h>
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#include <net/netfilter/nf_conntrack_l4proto.h>
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#include <net/netfilter/nf_conntrack_timeout.h>
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static const unsigned int nf_ct_generic_timeout = 600*HZ;
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#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
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#include <linux/netfilter/nfnetlink.h>
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#include <linux/netfilter/nfnetlink_cttimeout.h>
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static int generic_timeout_nlattr_to_obj(struct nlattr *tb[],
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struct net *net, void *data)
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{
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struct nf_generic_net *gn = nf_generic_pernet(net);
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unsigned int *timeout = data;
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if (!timeout)
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timeout = &gn->timeout;
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if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT])
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*timeout =
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ntohl(nla_get_be32(tb[CTA_TIMEOUT_GENERIC_TIMEOUT])) * HZ;
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else {
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/* Set default generic timeout. */
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*timeout = gn->timeout;
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}
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return 0;
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}
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static int
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generic_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
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{
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const unsigned int *timeout = data;
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if (nla_put_be32(skb, CTA_TIMEOUT_GENERIC_TIMEOUT, htonl(*timeout / HZ)))
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goto nla_put_failure;
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return 0;
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nla_put_failure:
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return -ENOSPC;
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}
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static const struct nla_policy
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generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = {
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[CTA_TIMEOUT_GENERIC_TIMEOUT] = { .type = NLA_U32 },
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};
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#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
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#ifdef CONFIG_SYSCTL
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static struct ctl_table generic_sysctl_table[] = {
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{
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.procname = "nf_conntrack_generic_timeout",
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_jiffies,
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},
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{ }
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};
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#endif /* CONFIG_SYSCTL */
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static int generic_kmemdup_sysctl_table(struct nf_proto_net *pn,
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struct nf_generic_net *gn)
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{
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#ifdef CONFIG_SYSCTL
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pn->ctl_table = kmemdup(generic_sysctl_table,
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sizeof(generic_sysctl_table),
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GFP_KERNEL);
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if (!pn->ctl_table)
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return -ENOMEM;
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pn->ctl_table[0].data = &gn->timeout;
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#endif
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return 0;
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}
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static int generic_init_net(struct net *net)
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{
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struct nf_generic_net *gn = nf_generic_pernet(net);
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struct nf_proto_net *pn = &gn->pn;
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gn->timeout = nf_ct_generic_timeout;
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return generic_kmemdup_sysctl_table(pn, gn);
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}
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static struct nf_proto_net *generic_get_net_proto(struct net *net)
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{
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return &net->ct.nf_ct_proto.generic.pn;
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}
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const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
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{
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.l4proto = 255,
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#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
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.ctnl_timeout = {
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.nlattr_to_obj = generic_timeout_nlattr_to_obj,
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.obj_to_nlattr = generic_timeout_obj_to_nlattr,
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.nlattr_max = CTA_TIMEOUT_GENERIC_MAX,
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.obj_size = sizeof(unsigned int),
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.nla_policy = generic_timeout_nla_policy,
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},
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#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
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.init_net = generic_init_net,
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.get_net_proto = generic_get_net_proto,
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};
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