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1/*
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 */
9#include <linux/mm.h>
10#include <linux/slab.h>
11#include <linux/sysctl.h>
12#include <linux/spinlock.h>
13#include <net/ax25.h>
14
15static int min_ipdefmode[1], max_ipdefmode[] = {1};
16static int min_axdefmode[1], max_axdefmode[] = {1};
17static int min_backoff[1], max_backoff[] = {2};
18static int min_conmode[1], max_conmode[] = {2};
19static int min_window[] = {1}, max_window[] = {7};
20static int min_ewindow[] = {1}, max_ewindow[] = {63};
21static int min_t1[] = {1}, max_t1[] = {30000};
22static int min_t2[] = {1}, max_t2[] = {20000};
23static int min_t3[1], max_t3[] = {3600000};
24static int min_idle[1], max_idle[] = {65535000};
25static int min_n2[] = {1}, max_n2[] = {31};
26static int min_paclen[] = {1}, max_paclen[] = {512};
27static int min_proto[1], max_proto[] = { AX25_PROTO_MAX };
28#ifdef CONFIG_AX25_DAMA_SLAVE
29static int min_ds_timeout[1], max_ds_timeout[] = {65535000};
30#endif
31
32static struct ctl_table_header *ax25_table_header;
33
34static ctl_table *ax25_table;
35static int ax25_table_size;
36
37static struct ctl_path ax25_path[] = {
38 { .procname = "net", },
39 { .procname = "ax25", },
40 { }
41};
42
43static const ctl_table ax25_param_table[] = {
44 {
45 .procname = "ip_default_mode",
46 .maxlen = sizeof(int),
47 .mode = 0644,
48 .proc_handler = proc_dointvec_minmax,
49 .extra1 = &min_ipdefmode,
50 .extra2 = &max_ipdefmode
51 },
52 {
53 .procname = "ax25_default_mode",
54 .maxlen = sizeof(int),
55 .mode = 0644,
56 .proc_handler = proc_dointvec_minmax,
57 .extra1 = &min_axdefmode,
58 .extra2 = &max_axdefmode
59 },
60 {
61 .procname = "backoff_type",
62 .maxlen = sizeof(int),
63 .mode = 0644,
64 .proc_handler = proc_dointvec_minmax,
65 .extra1 = &min_backoff,
66 .extra2 = &max_backoff
67 },
68 {
69 .procname = "connect_mode",
70 .maxlen = sizeof(int),
71 .mode = 0644,
72 .proc_handler = proc_dointvec_minmax,
73 .extra1 = &min_conmode,
74 .extra2 = &max_conmode
75 },
76 {
77 .procname = "standard_window_size",
78 .maxlen = sizeof(int),
79 .mode = 0644,
80 .proc_handler = proc_dointvec_minmax,
81 .extra1 = &min_window,
82 .extra2 = &max_window
83 },
84 {
85 .procname = "extended_window_size",
86 .maxlen = sizeof(int),
87 .mode = 0644,
88 .proc_handler = proc_dointvec_minmax,
89 .extra1 = &min_ewindow,
90 .extra2 = &max_ewindow
91 },
92 {
93 .procname = "t1_timeout",
94 .maxlen = sizeof(int),
95 .mode = 0644,
96 .proc_handler = proc_dointvec_minmax,
97 .extra1 = &min_t1,
98 .extra2 = &max_t1
99 },
100 {
101 .procname = "t2_timeout",
102 .maxlen = sizeof(int),
103 .mode = 0644,
104 .proc_handler = proc_dointvec_minmax,
105 .extra1 = &min_t2,
106 .extra2 = &max_t2
107 },
108 {
109 .procname = "t3_timeout",
110 .maxlen = sizeof(int),
111 .mode = 0644,
112 .proc_handler = proc_dointvec_minmax,
113 .extra1 = &min_t3,
114 .extra2 = &max_t3
115 },
116 {
117 .procname = "idle_timeout",
118 .maxlen = sizeof(int),
119 .mode = 0644,
120 .proc_handler = proc_dointvec_minmax,
121 .extra1 = &min_idle,
122 .extra2 = &max_idle
123 },
124 {
125 .procname = "maximum_retry_count",
126 .maxlen = sizeof(int),
127 .mode = 0644,
128 .proc_handler = proc_dointvec_minmax,
129 .extra1 = &min_n2,
130 .extra2 = &max_n2
131 },
132 {
133 .procname = "maximum_packet_length",
134 .maxlen = sizeof(int),
135 .mode = 0644,
136 .proc_handler = proc_dointvec_minmax,
137 .extra1 = &min_paclen,
138 .extra2 = &max_paclen
139 },
140 {
141 .procname = "protocol",
142 .maxlen = sizeof(int),
143 .mode = 0644,
144 .proc_handler = proc_dointvec_minmax,
145 .extra1 = &min_proto,
146 .extra2 = &max_proto
147 },
148#ifdef CONFIG_AX25_DAMA_SLAVE
149 {
150 .procname = "dama_slave_timeout",
151 .maxlen = sizeof(int),
152 .mode = 0644,
153 .proc_handler = proc_dointvec_minmax,
154 .extra1 = &min_ds_timeout,
155 .extra2 = &max_ds_timeout
156 },
157#endif
158
159 { } /* that's all, folks! */
160};
161
162void ax25_register_sysctl(void)
163{
164 ax25_dev *ax25_dev;
165 int n, k;
166
167 spin_lock_bh(&ax25_dev_lock);
168 for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
169 ax25_table_size += sizeof(ctl_table);
170
171 if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {
172 spin_unlock_bh(&ax25_dev_lock);
173 return;
174 }
175
176 for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {
177 struct ctl_table *child = kmemdup(ax25_param_table,
178 sizeof(ax25_param_table),
179 GFP_ATOMIC);
180 if (!child) {
181 while (n--)
182 kfree(ax25_table[n].child);
183 kfree(ax25_table);
184 spin_unlock_bh(&ax25_dev_lock);
185 return;
186 }
187 ax25_table[n].child = ax25_dev->systable = child;
188 ax25_table[n].procname = ax25_dev->dev->name;
189 ax25_table[n].mode = 0555;
190
191
192 for (k = 0; k < AX25_MAX_VALUES; k++)
193 child[k].data = &ax25_dev->values[k];
194
195 n++;
196 }
197 spin_unlock_bh(&ax25_dev_lock);
198
199 ax25_table_header = register_sysctl_paths(ax25_path, ax25_table);
200}
201
202void ax25_unregister_sysctl(void)
203{
204 ctl_table *p;
205 unregister_sysctl_table(ax25_table_header);
206
207 for (p = ax25_table; p->procname; p++)
208 kfree(p->child);
209 kfree(ax25_table);
210}
1/*
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 */
9#include <linux/mm.h>
10#include <linux/slab.h>
11#include <linux/sysctl.h>
12#include <linux/spinlock.h>
13#include <net/ax25.h>
14
15static int min_ipdefmode[1], max_ipdefmode[] = {1};
16static int min_axdefmode[1], max_axdefmode[] = {1};
17static int min_backoff[1], max_backoff[] = {2};
18static int min_conmode[1], max_conmode[] = {2};
19static int min_window[] = {1}, max_window[] = {7};
20static int min_ewindow[] = {1}, max_ewindow[] = {63};
21static int min_t1[] = {1}, max_t1[] = {30000};
22static int min_t2[] = {1}, max_t2[] = {20000};
23static int min_t3[1], max_t3[] = {3600000};
24static int min_idle[1], max_idle[] = {65535000};
25static int min_n2[] = {1}, max_n2[] = {31};
26static int min_paclen[] = {1}, max_paclen[] = {512};
27static int min_proto[1], max_proto[] = { AX25_PROTO_MAX };
28#ifdef CONFIG_AX25_DAMA_SLAVE
29static int min_ds_timeout[1], max_ds_timeout[] = {65535000};
30#endif
31
32static const struct ctl_table ax25_param_table[] = {
33 {
34 .procname = "ip_default_mode",
35 .maxlen = sizeof(int),
36 .mode = 0644,
37 .proc_handler = proc_dointvec_minmax,
38 .extra1 = &min_ipdefmode,
39 .extra2 = &max_ipdefmode
40 },
41 {
42 .procname = "ax25_default_mode",
43 .maxlen = sizeof(int),
44 .mode = 0644,
45 .proc_handler = proc_dointvec_minmax,
46 .extra1 = &min_axdefmode,
47 .extra2 = &max_axdefmode
48 },
49 {
50 .procname = "backoff_type",
51 .maxlen = sizeof(int),
52 .mode = 0644,
53 .proc_handler = proc_dointvec_minmax,
54 .extra1 = &min_backoff,
55 .extra2 = &max_backoff
56 },
57 {
58 .procname = "connect_mode",
59 .maxlen = sizeof(int),
60 .mode = 0644,
61 .proc_handler = proc_dointvec_minmax,
62 .extra1 = &min_conmode,
63 .extra2 = &max_conmode
64 },
65 {
66 .procname = "standard_window_size",
67 .maxlen = sizeof(int),
68 .mode = 0644,
69 .proc_handler = proc_dointvec_minmax,
70 .extra1 = &min_window,
71 .extra2 = &max_window
72 },
73 {
74 .procname = "extended_window_size",
75 .maxlen = sizeof(int),
76 .mode = 0644,
77 .proc_handler = proc_dointvec_minmax,
78 .extra1 = &min_ewindow,
79 .extra2 = &max_ewindow
80 },
81 {
82 .procname = "t1_timeout",
83 .maxlen = sizeof(int),
84 .mode = 0644,
85 .proc_handler = proc_dointvec_minmax,
86 .extra1 = &min_t1,
87 .extra2 = &max_t1
88 },
89 {
90 .procname = "t2_timeout",
91 .maxlen = sizeof(int),
92 .mode = 0644,
93 .proc_handler = proc_dointvec_minmax,
94 .extra1 = &min_t2,
95 .extra2 = &max_t2
96 },
97 {
98 .procname = "t3_timeout",
99 .maxlen = sizeof(int),
100 .mode = 0644,
101 .proc_handler = proc_dointvec_minmax,
102 .extra1 = &min_t3,
103 .extra2 = &max_t3
104 },
105 {
106 .procname = "idle_timeout",
107 .maxlen = sizeof(int),
108 .mode = 0644,
109 .proc_handler = proc_dointvec_minmax,
110 .extra1 = &min_idle,
111 .extra2 = &max_idle
112 },
113 {
114 .procname = "maximum_retry_count",
115 .maxlen = sizeof(int),
116 .mode = 0644,
117 .proc_handler = proc_dointvec_minmax,
118 .extra1 = &min_n2,
119 .extra2 = &max_n2
120 },
121 {
122 .procname = "maximum_packet_length",
123 .maxlen = sizeof(int),
124 .mode = 0644,
125 .proc_handler = proc_dointvec_minmax,
126 .extra1 = &min_paclen,
127 .extra2 = &max_paclen
128 },
129 {
130 .procname = "protocol",
131 .maxlen = sizeof(int),
132 .mode = 0644,
133 .proc_handler = proc_dointvec_minmax,
134 .extra1 = &min_proto,
135 .extra2 = &max_proto
136 },
137#ifdef CONFIG_AX25_DAMA_SLAVE
138 {
139 .procname = "dama_slave_timeout",
140 .maxlen = sizeof(int),
141 .mode = 0644,
142 .proc_handler = proc_dointvec_minmax,
143 .extra1 = &min_ds_timeout,
144 .extra2 = &max_ds_timeout
145 },
146#endif
147
148 { } /* that's all, folks! */
149};
150
151int ax25_register_dev_sysctl(ax25_dev *ax25_dev)
152{
153 char path[sizeof("net/ax25/") + IFNAMSIZ];
154 int k;
155 struct ctl_table *table;
156
157 table = kmemdup(ax25_param_table, sizeof(ax25_param_table), GFP_KERNEL);
158 if (!table)
159 return -ENOMEM;
160
161 for (k = 0; k < AX25_MAX_VALUES; k++)
162 table[k].data = &ax25_dev->values[k];
163
164 snprintf(path, sizeof(path), "net/ax25/%s", ax25_dev->dev->name);
165 ax25_dev->sysheader = register_net_sysctl(&init_net, path, table);
166 if (!ax25_dev->sysheader) {
167 kfree(table);
168 return -ENOMEM;
169 }
170 return 0;
171}
172
173void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev)
174{
175 struct ctl_table_header *header = ax25_dev->sysheader;
176 struct ctl_table *table;
177
178 if (header) {
179 ax25_dev->sysheader = NULL;
180 table = header->ctl_table_arg;
181 unregister_net_sysctl_table(header);
182 kfree(table);
183 }
184}