// SPDX-License-Identifier: GPL-2.0-or-later

  /*

   *
   * Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
   */
  #include <linux/mm.h>
  #include <linux/sysctl.h>
  #include <linux/init.h>
  #include <net/ax25.h>
  #include <net/netrom.h>
  
  /*
   *	Values taken from NET/ROM documentation.
   */
  static int min_quality[] = {0}, max_quality[] = {255};
  static int min_obs[]     = {0}, max_obs[]     = {255};
  static int min_ttl[]     = {0}, max_ttl[]     = {255};
  static int min_t1[]      = {5 * HZ};
  static int max_t1[]      = {600 * HZ};
  static int min_n2[]      = {2}, max_n2[]      = {127};
  static int min_t2[]      = {1 * HZ};
  static int max_t2[]      = {60 * HZ};
  static int min_t4[]      = {1 * HZ};
  static int max_t4[]      = {1000 * HZ};
  static int min_window[]  = {1}, max_window[]  = {127};
  static int min_idle[]    = {0 * HZ};
  static int max_idle[]    = {65535 * HZ};
  static int min_route[]   = {0}, max_route[]   = {1};
  static int min_fails[]   = {1}, max_fails[]   = {10};

  static int min_reset[]   = {0}, max_reset[]   = {1};

  
  static struct ctl_table_header *nr_table_header;

  static struct ctl_table nr_table[] = {

  	{

  		.procname	= "default_path_quality",
  		.data		= &sysctl_netrom_default_path_quality,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_quality,
  		.extra2		= &max_quality
  	},

  	{

  		.procname	= "obsolescence_count_initialiser",
  		.data		= &sysctl_netrom_obsolescence_count_initialiser,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_obs,
  		.extra2		= &max_obs
  	},

  	{

  		.procname	= "network_ttl_initialiser",
  		.data		= &sysctl_netrom_network_ttl_initialiser,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_ttl,
  		.extra2		= &max_ttl
  	},

  	{

  		.procname	= "transport_timeout",
  		.data		= &sysctl_netrom_transport_timeout,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_t1,
  		.extra2		= &max_t1
  	},

  	{

  		.procname	= "transport_maximum_tries",
  		.data		= &sysctl_netrom_transport_maximum_tries,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_n2,
  		.extra2		= &max_n2
  	},

  	{

  		.procname	= "transport_acknowledge_delay",
  		.data		= &sysctl_netrom_transport_acknowledge_delay,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_t2,
  		.extra2		= &max_t2
  	},

  	{

  		.procname	= "transport_busy_delay",
  		.data		= &sysctl_netrom_transport_busy_delay,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_t4,
  		.extra2		= &max_t4
  	},

  	{

  		.procname	= "transport_requested_window_size",
  		.data		= &sysctl_netrom_transport_requested_window_size,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_window,
  		.extra2		= &max_window
  	},

  	{

  		.procname	= "transport_no_activity_timeout",
  		.data		= &sysctl_netrom_transport_no_activity_timeout,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_idle,
  		.extra2		= &max_idle
  	},

  	{

  		.procname	= "routing_control",
  		.data		= &sysctl_netrom_routing_control,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_route,
  		.extra2		= &max_route
  	},

  	{

  		.procname	= "link_fails_count",
  		.data		= &sysctl_netrom_link_fails_count,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_fails,
  		.extra2		= &max_fails
  	},

  	{

  		.procname	= "reset",
  		.data		= &sysctl_netrom_reset_circuit,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,

  		.proc_handler	= proc_dointvec_minmax,

  		.extra1		= &min_reset,
  		.extra2		= &max_reset
  	},

  	{ }

  };

  int __init nr_register_sysctl(void)

  {

  	nr_table_header = register_net_sysctl(&init_net, "net/netrom", nr_table);

  	if (!nr_table_header)
  		return -ENOMEM;
  	return 0;

  }
  
  void nr_unregister_sysctl(void)
  {

  	unregister_net_sysctl_table(nr_table_header);

  }