1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
5 */
6#include <linux/mm.h>
7#include <linux/sysctl.h>
8#include <linux/init.h>
9#include <net/ax25.h>
10#include <net/netrom.h>
11
12/*
13 *	Values taken from NET/ROM documentation.
14 */
15static int min_quality[] = {0}, max_quality[] = {255};
16static int min_obs[]     = {0}, max_obs[]     = {255};
17static int min_ttl[]     = {0}, max_ttl[]     = {255};
18static int min_t1[]      = {5 * HZ};
19static int max_t1[]      = {600 * HZ};
20static int min_n2[]      = {2}, max_n2[]      = {127};
21static int min_t2[]      = {1 * HZ};
22static int max_t2[]      = {60 * HZ};
23static int min_t4[]      = {1 * HZ};
24static int max_t4[]      = {1000 * HZ};
25static int min_window[]  = {1}, max_window[]  = {127};
26static int min_idle[]    = {0 * HZ};
27static int max_idle[]    = {65535 * HZ};
28static int min_route[]   = {0}, max_route[]   = {1};
29static int min_fails[]   = {1}, max_fails[]   = {10};
30static int min_reset[]   = {0}, max_reset[]   = {1};
31
32static struct ctl_table_header *nr_table_header;
33
34static struct ctl_table nr_table[] = {
35	{
36		.procname	= "default_path_quality",
37		.data		= &sysctl_netrom_default_path_quality,
38		.maxlen		= sizeof(int),
39		.mode		= 0644,
40		.proc_handler	= proc_dointvec_minmax,
41		.extra1		= &min_quality,
42		.extra2		= &max_quality
43	},
44	{
45		.procname	= "obsolescence_count_initialiser",
46		.data		= &sysctl_netrom_obsolescence_count_initialiser,
47		.maxlen		= sizeof(int),
48		.mode		= 0644,
49		.proc_handler	= proc_dointvec_minmax,
50		.extra1		= &min_obs,
51		.extra2		= &max_obs
52	},
53	{
54		.procname	= "network_ttl_initialiser",
55		.data		= &sysctl_netrom_network_ttl_initialiser,
56		.maxlen		= sizeof(int),
57		.mode		= 0644,
58		.proc_handler	= proc_dointvec_minmax,
59		.extra1		= &min_ttl,
60		.extra2		= &max_ttl
61	},
62	{
63		.procname	= "transport_timeout",
64		.data		= &sysctl_netrom_transport_timeout,
65		.maxlen		= sizeof(int),
66		.mode		= 0644,
67		.proc_handler	= proc_dointvec_minmax,
68		.extra1		= &min_t1,
69		.extra2		= &max_t1
70	},
71	{
72		.procname	= "transport_maximum_tries",
73		.data		= &sysctl_netrom_transport_maximum_tries,
74		.maxlen		= sizeof(int),
75		.mode		= 0644,
76		.proc_handler	= proc_dointvec_minmax,
77		.extra1		= &min_n2,
78		.extra2		= &max_n2
79	},
80	{
81		.procname	= "transport_acknowledge_delay",
82		.data		= &sysctl_netrom_transport_acknowledge_delay,
83		.maxlen		= sizeof(int),
84		.mode		= 0644,
85		.proc_handler	= proc_dointvec_minmax,
86		.extra1		= &min_t2,
87		.extra2		= &max_t2
88	},
89	{
90		.procname	= "transport_busy_delay",
91		.data		= &sysctl_netrom_transport_busy_delay,
92		.maxlen		= sizeof(int),
93		.mode		= 0644,
94		.proc_handler	= proc_dointvec_minmax,
95		.extra1		= &min_t4,
96		.extra2		= &max_t4
97	},
98	{
99		.procname	= "transport_requested_window_size",
100		.data		= &sysctl_netrom_transport_requested_window_size,
101		.maxlen		= sizeof(int),
102		.mode		= 0644,
103		.proc_handler	= proc_dointvec_minmax,
104		.extra1		= &min_window,
105		.extra2		= &max_window
106	},
107	{
108		.procname	= "transport_no_activity_timeout",
109		.data		= &sysctl_netrom_transport_no_activity_timeout,
110		.maxlen		= sizeof(int),
111		.mode		= 0644,
112		.proc_handler	= proc_dointvec_minmax,
113		.extra1		= &min_idle,
114		.extra2		= &max_idle
115	},
116	{
117		.procname	= "routing_control",
118		.data		= &sysctl_netrom_routing_control,
119		.maxlen		= sizeof(int),
120		.mode		= 0644,
121		.proc_handler	= proc_dointvec_minmax,
122		.extra1		= &min_route,
123		.extra2		= &max_route
124	},
125	{
126		.procname	= "link_fails_count",
127		.data		= &sysctl_netrom_link_fails_count,
128		.maxlen		= sizeof(int),
129		.mode		= 0644,
130		.proc_handler	= proc_dointvec_minmax,
131		.extra1		= &min_fails,
132		.extra2		= &max_fails
133	},
134	{
135		.procname	= "reset",
136		.data		= &sysctl_netrom_reset_circuit,
137		.maxlen		= sizeof(int),
138		.mode		= 0644,
139		.proc_handler	= proc_dointvec_minmax,
140		.extra1		= &min_reset,
141		.extra2		= &max_reset
142	},
143	{ }
144};
145
146int __init nr_register_sysctl(void)
147{
148	nr_table_header = register_net_sysctl(&init_net, "net/netrom", nr_table);
149	if (!nr_table_header)
150		return -ENOMEM;
151	return 0;
152}
153
154void nr_unregister_sysctl(void)
155{
156	unregister_net_sysctl_table(nr_table_header);
157}
158