CoCalc -- sysctl_net

GitHub Repository: torvalds/linux
Path: blob/master/net/netrom/sysctl_net_netrom.c
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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 *
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 * Copyright (C) 1996 Mike Shaver ([email protected])
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 */
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#include <linux/mm.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <net/ax25.h>
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#include <net/netrom.h>
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/*
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 *	Values taken from NET/ROM documentation.
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 */
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static int min_quality[] = {0}, max_quality[] = {255};
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static int min_obs[]     = {0}, max_obs[]     = {255};
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static int min_ttl[]     = {0}, max_ttl[]     = {255};
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static int min_t1[]      = {5 * HZ};
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static int max_t1[]      = {600 * HZ};
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static int min_n2[]      = {2}, max_n2[]      = {127};
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static int min_t2[]      = {1 * HZ};
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static int max_t2[]      = {60 * HZ};
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static int min_t4[]      = {1 * HZ};
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static int max_t4[]      = {1000 * HZ};
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static int min_window[]  = {1}, max_window[]  = {127};
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static int min_idle[]    = {0 * HZ};
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static int max_idle[]    = {65535 * HZ};
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static int min_route[]   = {0}, max_route[]   = {1};
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static int min_fails[]   = {1}, max_fails[]   = {10};
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static int min_reset[]   = {0}, max_reset[]   = {1};
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static struct ctl_table_header *nr_table_header;
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static struct ctl_table nr_table[] = {
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	{
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		.procname	= "default_path_quality",
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		.data		= &sysctl_netrom_default_path_quality,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_quality,
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		.extra2		= &max_quality
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	},
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	{
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		.procname	= "obsolescence_count_initialiser",
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		.data		= &sysctl_netrom_obsolescence_count_initialiser,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_obs,
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		.extra2		= &max_obs
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	},
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	{
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		.procname	= "network_ttl_initialiser",
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		.data		= &sysctl_netrom_network_ttl_initialiser,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_ttl,
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		.extra2		= &max_ttl
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	},
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	{
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		.procname	= "transport_timeout",
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		.data		= &sysctl_netrom_transport_timeout,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_t1,
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		.extra2		= &max_t1
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	},
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	{
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		.procname	= "transport_maximum_tries",
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		.data		= &sysctl_netrom_transport_maximum_tries,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_n2,
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		.extra2		= &max_n2
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	},
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	{
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		.procname	= "transport_acknowledge_delay",
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		.data		= &sysctl_netrom_transport_acknowledge_delay,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_t2,
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		.extra2		= &max_t2
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	},
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	{
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		.procname	= "transport_busy_delay",
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		.data		= &sysctl_netrom_transport_busy_delay,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_t4,
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		.extra2		= &max_t4
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	},
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	{
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		.procname	= "transport_requested_window_size",
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		.data		= &sysctl_netrom_transport_requested_window_size,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_window,
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		.extra2		= &max_window
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	},
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	{
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		.procname	= "transport_no_activity_timeout",
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		.data		= &sysctl_netrom_transport_no_activity_timeout,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_idle,
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		.extra2		= &max_idle
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	},
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	{
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		.procname	= "routing_control",
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		.data		= &sysctl_netrom_routing_control,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_route,
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		.extra2		= &max_route
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	},
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	{
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		.procname	= "link_fails_count",
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		.data		= &sysctl_netrom_link_fails_count,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_fails,
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		.extra2		= &max_fails
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	},
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	{
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		.procname	= "reset",
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		.data		= &sysctl_netrom_reset_circuit,
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		.maxlen		= sizeof(int),
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		.mode		= 0644,
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		.proc_handler	= proc_dointvec_minmax,
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		.extra1		= &min_reset,
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		.extra2		= &max_reset
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	},
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};
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int __init nr_register_sysctl(void)
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{
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	nr_table_header = register_net_sysctl(&init_net, "net/netrom", nr_table);
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	if (!nr_table_header)
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		return -ENOMEM;
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	return 0;
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}
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void nr_unregister_sysctl(void)
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{
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	unregister_net_sysctl_table(nr_table_header);
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}
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