blob: 443a8367663807c4265e002268b88e9be0acf221 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
8 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/mm.h>
10#include <linux/sysctl.h>
11#include <linux/spinlock.h>
12#include <net/ax25.h>
13
14static int min_ipdefmode[1], max_ipdefmode[] = {1};
15static int min_axdefmode[1], max_axdefmode[] = {1};
16static int min_backoff[1], max_backoff[] = {2};
17static int min_conmode[1], max_conmode[] = {2};
18static int min_window[] = {1}, max_window[] = {7};
19static int min_ewindow[] = {1}, max_ewindow[] = {63};
Ralf Baechlee1fdb5b2006-05-03 23:27:16 -070020static int min_t1[] = {1}, max_t1[] = {30000};
21static int min_t2[] = {1}, max_t2[] = {20000};
22static int min_t3[1], max_t3[] = {3600000};
23static int min_idle[1], max_idle[] = {65535000};
Linus Torvalds1da177e2005-04-16 15:20:36 -070024static int min_n2[] = {1}, max_n2[] = {31};
25static int min_paclen[] = {1}, max_paclen[] = {512};
Ralf Baechle DL5RBc7c694d2006-03-19 13:20:06 -080026static int min_proto[1], max_proto[] = { AX25_PROTO_MAX };
Ralf Baechlee1fdb5b2006-05-03 23:27:16 -070027static int min_ds_timeout[1], max_ds_timeout[] = {65535000};
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29static struct ctl_table_header *ax25_table_header;
30
31static ctl_table *ax25_table;
32static int ax25_table_size;
33
34static ctl_table ax25_dir_table[] = {
35 {
36 .ctl_name = NET_AX25,
37 .procname = "ax25",
38 .mode = 0555,
39 },
40 { .ctl_name = 0 }
41};
42
43static ctl_table ax25_root_table[] = {
44 {
45 .ctl_name = CTL_NET,
46 .procname = "net",
47 .mode = 0555,
48 .child = ax25_dir_table
49 },
50 { .ctl_name = 0 }
51};
52
53static const ctl_table ax25_param_table[] = {
54 {
55 .ctl_name = NET_AX25_IP_DEFAULT_MODE,
56 .procname = "ip_default_mode",
57 .maxlen = sizeof(int),
58 .mode = 0644,
59 .proc_handler = &proc_dointvec_minmax,
60 .strategy = &sysctl_intvec,
61 .extra1 = &min_ipdefmode,
62 .extra2 = &max_ipdefmode
63 },
64 {
65 .ctl_name = NET_AX25_DEFAULT_MODE,
66 .procname = "ax25_default_mode",
67 .maxlen = sizeof(int),
68 .mode = 0644,
69 .proc_handler = &proc_dointvec_minmax,
70 .strategy = &sysctl_intvec,
71 .extra1 = &min_axdefmode,
72 .extra2 = &max_axdefmode
73 },
74 {
75 .ctl_name = NET_AX25_BACKOFF_TYPE,
76 .procname = "backoff_type",
77 .maxlen = sizeof(int),
78 .mode = 0644,
79 .proc_handler = &proc_dointvec_minmax,
80 .strategy = &sysctl_intvec,
81 .extra1 = &min_backoff,
82 .extra2 = &max_backoff
83 },
84 {
85 .ctl_name = NET_AX25_CONNECT_MODE,
86 .procname = "connect_mode",
87 .maxlen = sizeof(int),
88 .mode = 0644,
89 .proc_handler = &proc_dointvec_minmax,
90 .strategy = &sysctl_intvec,
91 .extra1 = &min_conmode,
92 .extra2 = &max_conmode
93 },
94 {
95 .ctl_name = NET_AX25_STANDARD_WINDOW,
96 .procname = "standard_window_size",
97 .maxlen = sizeof(int),
98 .mode = 0644,
99 .proc_handler = &proc_dointvec_minmax,
100 .strategy = &sysctl_intvec,
101 .extra1 = &min_window,
102 .extra2 = &max_window
103 },
104 {
105 .ctl_name = NET_AX25_EXTENDED_WINDOW,
106 .procname = "extended_window_size",
107 .maxlen = sizeof(int),
108 .mode = 0644,
109 .proc_handler = &proc_dointvec_minmax,
110 .strategy = &sysctl_intvec,
111 .extra1 = &min_ewindow,
112 .extra2 = &max_ewindow
113 },
114 {
115 .ctl_name = NET_AX25_T1_TIMEOUT,
116 .procname = "t1_timeout",
117 .maxlen = sizeof(int),
118 .mode = 0644,
119 .proc_handler = &proc_dointvec_minmax,
120 .strategy = &sysctl_intvec,
121 .extra1 = &min_t1,
122 .extra2 = &max_t1
123 },
124 {
125 .ctl_name = NET_AX25_T2_TIMEOUT,
126 .procname = "t2_timeout",
127 .maxlen = sizeof(int),
128 .mode = 0644,
129 .proc_handler = &proc_dointvec_minmax,
130 .strategy = &sysctl_intvec,
131 .extra1 = &min_t2,
132 .extra2 = &max_t2
133 },
134 {
135 .ctl_name = NET_AX25_T3_TIMEOUT,
136 .procname = "t3_timeout",
137 .maxlen = sizeof(int),
138 .mode = 0644,
139 .proc_handler = &proc_dointvec_minmax,
140 .strategy = &sysctl_intvec,
141 .extra1 = &min_t3,
142 .extra2 = &max_t3
143 },
144 {
145 .ctl_name = NET_AX25_IDLE_TIMEOUT,
146 .procname = "idle_timeout",
147 .maxlen = sizeof(int),
148 .mode = 0644,
149 .proc_handler = &proc_dointvec_minmax,
150 .strategy = &sysctl_intvec,
151 .extra1 = &min_idle,
152 .extra2 = &max_idle
153 },
154 {
155 .ctl_name = NET_AX25_N2,
156 .procname = "maximum_retry_count",
157 .maxlen = sizeof(int),
158 .mode = 0644,
159 .proc_handler = &proc_dointvec_minmax,
160 .strategy = &sysctl_intvec,
161 .extra1 = &min_n2,
162 .extra2 = &max_n2
163 },
164 {
165 .ctl_name = NET_AX25_PACLEN,
166 .procname = "maximum_packet_length",
167 .maxlen = sizeof(int),
168 .mode = 0644,
169 .proc_handler = &proc_dointvec_minmax,
170 .strategy = &sysctl_intvec,
171 .extra1 = &min_paclen,
172 .extra2 = &max_paclen
173 },
174 {
175 .ctl_name = NET_AX25_PROTOCOL,
176 .procname = "protocol",
177 .maxlen = sizeof(int),
178 .mode = 0644,
179 .proc_handler = &proc_dointvec_minmax,
180 .strategy = &sysctl_intvec,
181 .extra1 = &min_proto,
182 .extra2 = &max_proto
183 },
184 {
185 .ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT,
186 .procname = "dama_slave_timeout",
187 .maxlen = sizeof(int),
188 .mode = 0644,
189 .proc_handler = &proc_dointvec_minmax,
190 .strategy = &sysctl_intvec,
191 .extra1 = &min_ds_timeout,
192 .extra2 = &max_ds_timeout
193 },
194 { .ctl_name = 0 } /* that's all, folks! */
195};
196
197void ax25_register_sysctl(void)
198{
199 ax25_dev *ax25_dev;
200 int n, k;
201
202 spin_lock_bh(&ax25_dev_lock);
203 for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
204 ax25_table_size += sizeof(ctl_table);
205
Panagiotis Issaris0da974f2006-07-21 14:51:30 -0700206 if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 spin_unlock_bh(&ax25_dev_lock);
208 return;
209 }
210
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {
Arnaldo Carvalho de Melo0459d702006-11-17 12:43:07 -0200212 struct ctl_table *child = kmemdup(ax25_param_table,
213 sizeof(ax25_param_table),
214 GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 if (!child) {
216 while (n--)
217 kfree(ax25_table[n].child);
218 kfree(ax25_table);
219 spin_unlock_bh(&ax25_dev_lock);
220 return;
221 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 ax25_table[n].child = ax25_dev->systable = child;
223 ax25_table[n].ctl_name = n + 1;
224 ax25_table[n].procname = ax25_dev->dev->name;
225 ax25_table[n].mode = 0555;
226
227#ifndef CONFIG_AX25_DAMA_SLAVE
228 /*
229 * We do not wish to have a representation of this parameter
230 * in /proc/sys/ when configured *not* to include the
231 * AX.25 DAMA slave code, do we?
232 */
233
234 child[AX25_VALUES_DS_TIMEOUT].procname = NULL;
235#endif
236
237 child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */
238
239 for (k = 0; k < AX25_MAX_VALUES; k++)
240 child[k].data = &ax25_dev->values[k];
241
242 n++;
243 }
244 spin_unlock_bh(&ax25_dev_lock);
245
246 ax25_dir_table[0].child = ax25_table;
247
Eric W. Biederman0b4d4142007-02-14 00:34:09 -0800248 ax25_table_header = register_sysctl_table(ax25_root_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249}
250
251void ax25_unregister_sysctl(void)
252{
253 ctl_table *p;
254 unregister_sysctl_table(ax25_table_header);
255
256 ax25_dir_table[0].child = NULL;
257 for (p = ax25_table; p->ctl_name; p++)
258 kfree(p->child);
259 kfree(ax25_table);
260}