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1da177e4 LT |
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/config.h> | |
10 | #include <linux/mm.h> | |
11 | #include <linux/sysctl.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <net/ax25.h> | |
14 | ||
15 | static int min_ipdefmode[1], max_ipdefmode[] = {1}; | |
16 | static int min_axdefmode[1], max_axdefmode[] = {1}; | |
17 | static int min_backoff[1], max_backoff[] = {2}; | |
18 | static int min_conmode[1], max_conmode[] = {2}; | |
19 | static int min_window[] = {1}, max_window[] = {7}; | |
20 | static int min_ewindow[] = {1}, max_ewindow[] = {63}; | |
21 | static int min_t1[] = {1}, max_t1[] = {30 * HZ}; | |
22 | static int min_t2[] = {1}, max_t2[] = {20 * HZ}; | |
23 | static int min_t3[1], max_t3[] = {3600 * HZ}; | |
24 | static int min_idle[1], max_idle[] = {65535 * HZ}; | |
25 | static int min_n2[] = {1}, max_n2[] = {31}; | |
26 | static int min_paclen[] = {1}, max_paclen[] = {512}; | |
c7c694d1 | 27 | static int min_proto[1], max_proto[] = { AX25_PROTO_MAX }; |
1da177e4 LT |
28 | static int min_ds_timeout[1], max_ds_timeout[] = {65535 * HZ}; |
29 | ||
30 | static struct ctl_table_header *ax25_table_header; | |
31 | ||
32 | static ctl_table *ax25_table; | |
33 | static int ax25_table_size; | |
34 | ||
35 | static ctl_table ax25_dir_table[] = { | |
36 | { | |
37 | .ctl_name = NET_AX25, | |
38 | .procname = "ax25", | |
39 | .mode = 0555, | |
40 | }, | |
41 | { .ctl_name = 0 } | |
42 | }; | |
43 | ||
44 | static ctl_table ax25_root_table[] = { | |
45 | { | |
46 | .ctl_name = CTL_NET, | |
47 | .procname = "net", | |
48 | .mode = 0555, | |
49 | .child = ax25_dir_table | |
50 | }, | |
51 | { .ctl_name = 0 } | |
52 | }; | |
53 | ||
54 | static const ctl_table ax25_param_table[] = { | |
55 | { | |
56 | .ctl_name = NET_AX25_IP_DEFAULT_MODE, | |
57 | .procname = "ip_default_mode", | |
58 | .maxlen = sizeof(int), | |
59 | .mode = 0644, | |
60 | .proc_handler = &proc_dointvec_minmax, | |
61 | .strategy = &sysctl_intvec, | |
62 | .extra1 = &min_ipdefmode, | |
63 | .extra2 = &max_ipdefmode | |
64 | }, | |
65 | { | |
66 | .ctl_name = NET_AX25_DEFAULT_MODE, | |
67 | .procname = "ax25_default_mode", | |
68 | .maxlen = sizeof(int), | |
69 | .mode = 0644, | |
70 | .proc_handler = &proc_dointvec_minmax, | |
71 | .strategy = &sysctl_intvec, | |
72 | .extra1 = &min_axdefmode, | |
73 | .extra2 = &max_axdefmode | |
74 | }, | |
75 | { | |
76 | .ctl_name = NET_AX25_BACKOFF_TYPE, | |
77 | .procname = "backoff_type", | |
78 | .maxlen = sizeof(int), | |
79 | .mode = 0644, | |
80 | .proc_handler = &proc_dointvec_minmax, | |
81 | .strategy = &sysctl_intvec, | |
82 | .extra1 = &min_backoff, | |
83 | .extra2 = &max_backoff | |
84 | }, | |
85 | { | |
86 | .ctl_name = NET_AX25_CONNECT_MODE, | |
87 | .procname = "connect_mode", | |
88 | .maxlen = sizeof(int), | |
89 | .mode = 0644, | |
90 | .proc_handler = &proc_dointvec_minmax, | |
91 | .strategy = &sysctl_intvec, | |
92 | .extra1 = &min_conmode, | |
93 | .extra2 = &max_conmode | |
94 | }, | |
95 | { | |
96 | .ctl_name = NET_AX25_STANDARD_WINDOW, | |
97 | .procname = "standard_window_size", | |
98 | .maxlen = sizeof(int), | |
99 | .mode = 0644, | |
100 | .proc_handler = &proc_dointvec_minmax, | |
101 | .strategy = &sysctl_intvec, | |
102 | .extra1 = &min_window, | |
103 | .extra2 = &max_window | |
104 | }, | |
105 | { | |
106 | .ctl_name = NET_AX25_EXTENDED_WINDOW, | |
107 | .procname = "extended_window_size", | |
108 | .maxlen = sizeof(int), | |
109 | .mode = 0644, | |
110 | .proc_handler = &proc_dointvec_minmax, | |
111 | .strategy = &sysctl_intvec, | |
112 | .extra1 = &min_ewindow, | |
113 | .extra2 = &max_ewindow | |
114 | }, | |
115 | { | |
116 | .ctl_name = NET_AX25_T1_TIMEOUT, | |
117 | .procname = "t1_timeout", | |
118 | .maxlen = sizeof(int), | |
119 | .mode = 0644, | |
120 | .proc_handler = &proc_dointvec_minmax, | |
121 | .strategy = &sysctl_intvec, | |
122 | .extra1 = &min_t1, | |
123 | .extra2 = &max_t1 | |
124 | }, | |
125 | { | |
126 | .ctl_name = NET_AX25_T2_TIMEOUT, | |
127 | .procname = "t2_timeout", | |
128 | .maxlen = sizeof(int), | |
129 | .mode = 0644, | |
130 | .proc_handler = &proc_dointvec_minmax, | |
131 | .strategy = &sysctl_intvec, | |
132 | .extra1 = &min_t2, | |
133 | .extra2 = &max_t2 | |
134 | }, | |
135 | { | |
136 | .ctl_name = NET_AX25_T3_TIMEOUT, | |
137 | .procname = "t3_timeout", | |
138 | .maxlen = sizeof(int), | |
139 | .mode = 0644, | |
140 | .proc_handler = &proc_dointvec_minmax, | |
141 | .strategy = &sysctl_intvec, | |
142 | .extra1 = &min_t3, | |
143 | .extra2 = &max_t3 | |
144 | }, | |
145 | { | |
146 | .ctl_name = NET_AX25_IDLE_TIMEOUT, | |
147 | .procname = "idle_timeout", | |
148 | .maxlen = sizeof(int), | |
149 | .mode = 0644, | |
150 | .proc_handler = &proc_dointvec_minmax, | |
151 | .strategy = &sysctl_intvec, | |
152 | .extra1 = &min_idle, | |
153 | .extra2 = &max_idle | |
154 | }, | |
155 | { | |
156 | .ctl_name = NET_AX25_N2, | |
157 | .procname = "maximum_retry_count", | |
158 | .maxlen = sizeof(int), | |
159 | .mode = 0644, | |
160 | .proc_handler = &proc_dointvec_minmax, | |
161 | .strategy = &sysctl_intvec, | |
162 | .extra1 = &min_n2, | |
163 | .extra2 = &max_n2 | |
164 | }, | |
165 | { | |
166 | .ctl_name = NET_AX25_PACLEN, | |
167 | .procname = "maximum_packet_length", | |
168 | .maxlen = sizeof(int), | |
169 | .mode = 0644, | |
170 | .proc_handler = &proc_dointvec_minmax, | |
171 | .strategy = &sysctl_intvec, | |
172 | .extra1 = &min_paclen, | |
173 | .extra2 = &max_paclen | |
174 | }, | |
175 | { | |
176 | .ctl_name = NET_AX25_PROTOCOL, | |
177 | .procname = "protocol", | |
178 | .maxlen = sizeof(int), | |
179 | .mode = 0644, | |
180 | .proc_handler = &proc_dointvec_minmax, | |
181 | .strategy = &sysctl_intvec, | |
182 | .extra1 = &min_proto, | |
183 | .extra2 = &max_proto | |
184 | }, | |
185 | { | |
186 | .ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT, | |
187 | .procname = "dama_slave_timeout", | |
188 | .maxlen = sizeof(int), | |
189 | .mode = 0644, | |
190 | .proc_handler = &proc_dointvec_minmax, | |
191 | .strategy = &sysctl_intvec, | |
192 | .extra1 = &min_ds_timeout, | |
193 | .extra2 = &max_ds_timeout | |
194 | }, | |
195 | { .ctl_name = 0 } /* that's all, folks! */ | |
196 | }; | |
197 | ||
198 | void ax25_register_sysctl(void) | |
199 | { | |
200 | ax25_dev *ax25_dev; | |
201 | int n, k; | |
202 | ||
203 | spin_lock_bh(&ax25_dev_lock); | |
204 | for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) | |
205 | ax25_table_size += sizeof(ctl_table); | |
206 | ||
207 | if ((ax25_table = kmalloc(ax25_table_size, GFP_ATOMIC)) == NULL) { | |
208 | spin_unlock_bh(&ax25_dev_lock); | |
209 | return; | |
210 | } | |
211 | ||
212 | memset(ax25_table, 0x00, ax25_table_size); | |
213 | ||
214 | for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) { | |
215 | ctl_table *child = kmalloc(sizeof(ax25_param_table), GFP_ATOMIC); | |
216 | if (!child) { | |
217 | while (n--) | |
218 | kfree(ax25_table[n].child); | |
219 | kfree(ax25_table); | |
220 | spin_unlock_bh(&ax25_dev_lock); | |
221 | return; | |
222 | } | |
223 | memcpy(child, ax25_param_table, sizeof(ax25_param_table)); | |
224 | ax25_table[n].child = ax25_dev->systable = child; | |
225 | ax25_table[n].ctl_name = n + 1; | |
226 | ax25_table[n].procname = ax25_dev->dev->name; | |
227 | ax25_table[n].mode = 0555; | |
228 | ||
229 | #ifndef CONFIG_AX25_DAMA_SLAVE | |
230 | /* | |
231 | * We do not wish to have a representation of this parameter | |
232 | * in /proc/sys/ when configured *not* to include the | |
233 | * AX.25 DAMA slave code, do we? | |
234 | */ | |
235 | ||
236 | child[AX25_VALUES_DS_TIMEOUT].procname = NULL; | |
237 | #endif | |
238 | ||
239 | child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */ | |
240 | ||
241 | for (k = 0; k < AX25_MAX_VALUES; k++) | |
242 | child[k].data = &ax25_dev->values[k]; | |
243 | ||
244 | n++; | |
245 | } | |
246 | spin_unlock_bh(&ax25_dev_lock); | |
247 | ||
248 | ax25_dir_table[0].child = ax25_table; | |
249 | ||
250 | ax25_table_header = register_sysctl_table(ax25_root_table, 1); | |
251 | } | |
252 | ||
253 | void ax25_unregister_sysctl(void) | |
254 | { | |
255 | ctl_table *p; | |
256 | unregister_sysctl_table(ax25_table_header); | |
257 | ||
258 | ax25_dir_table[0].child = NULL; | |
259 | for (p = ax25_table; p->ctl_name; p++) | |
260 | kfree(p->child); | |
261 | kfree(ax25_table); | |
262 | } |