/* (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>

  static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ;

  static bool generic_pkt_to_tuple(const struct sk_buff *skb,
  				 unsigned int dataoff,
  				 struct nf_conntrack_tuple *tuple)

  {
  	tuple->src.u.all = 0;
  	tuple->dst.u.all = 0;

  	return true;

  }

  static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
  				 const struct nf_conntrack_tuple *orig)

  {
  	tuple->src.u.all = 0;
  	tuple->dst.u.all = 0;

  	return true;

  }
  
  /* Print out the per-protocol part of the tuple. */
  static int generic_print_tuple(struct seq_file *s,
  			       const struct nf_conntrack_tuple *tuple)
  {
  	return 0;
  }

  /* Returns verdict for packet, or -1 for invalid. */

  static int packet(struct nf_conn *ct,

  		  const struct sk_buff *skb,
  		  unsigned int dataoff,
  		  enum ip_conntrack_info ctinfo,

  		  u_int8_t pf,

  		  unsigned int hooknum)
  {

  	nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_generic_timeout);

  	return NF_ACCEPT;
  }
  
  /* Called when a new connection for this protocol found. */

  static bool new(struct nf_conn *ct, const struct sk_buff *skb,
  		unsigned int dataoff)

  {

  	return true;

  }

  #ifdef CONFIG_SYSCTL
  static struct ctl_table_header *generic_sysctl_header;
  static struct ctl_table generic_sysctl_table[] = {
  	{

  		.procname	= "nf_conntrack_generic_timeout",
  		.data		= &nf_ct_generic_timeout,
  		.maxlen		= sizeof(unsigned int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_jiffies,

  	},

  	{ }

  };

  #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
  static struct ctl_table generic_compat_sysctl_table[] = {
  	{

  		.procname	= "ip_conntrack_generic_timeout",
  		.data		= &nf_ct_generic_timeout,
  		.maxlen		= sizeof(unsigned int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_jiffies,

  	},

  	{ }

  };
  #endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */

  #endif /* CONFIG_SYSCTL */

  struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly =

  {
  	.l3proto		= PF_UNSPEC,

  	.l4proto		= 255,

  	.name			= "unknown",
  	.pkt_to_tuple		= generic_pkt_to_tuple,
  	.invert_tuple		= generic_invert_tuple,
  	.print_tuple		= generic_print_tuple,

  	.packet			= packet,
  	.new			= new,

  #ifdef CONFIG_SYSCTL
  	.ctl_table_header	= &generic_sysctl_header,
  	.ctl_table		= generic_sysctl_table,

  #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
  	.ctl_compat_table	= generic_compat_sysctl_table,
  #endif

  #endif

  };