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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 | */ | |
1da177e4 LT |
9 | #include <linux/mm.h> |
10 | #include <linux/sysctl.h> | |
11 | #include <linux/spinlock.h> | |
12 | #include <net/ax25.h> | |
13 | ||
14 | static int min_ipdefmode[1], max_ipdefmode[] = {1}; | |
15 | static int min_axdefmode[1], max_axdefmode[] = {1}; | |
16 | static int min_backoff[1], max_backoff[] = {2}; | |
17 | static int min_conmode[1], max_conmode[] = {2}; | |
18 | static int min_window[] = {1}, max_window[] = {7}; | |
19 | static int min_ewindow[] = {1}, max_ewindow[] = {63}; | |
e1fdb5b3 RB |
20 | static int min_t1[] = {1}, max_t1[] = {30000}; |
21 | static int min_t2[] = {1}, max_t2[] = {20000}; | |
22 | static int min_t3[1], max_t3[] = {3600000}; | |
23 | static int min_idle[1], max_idle[] = {65535000}; | |
1da177e4 LT |
24 | static int min_n2[] = {1}, max_n2[] = {31}; |
25 | static int min_paclen[] = {1}, max_paclen[] = {512}; | |
c7c694d1 | 26 | static int min_proto[1], max_proto[] = { AX25_PROTO_MAX }; |
e1fdb5b3 | 27 | static int min_ds_timeout[1], max_ds_timeout[] = {65535000}; |
1da177e4 LT |
28 | |
29 | static struct ctl_table_header *ax25_table_header; | |
30 | ||
31 | static ctl_table *ax25_table; | |
32 | static int ax25_table_size; | |
33 | ||
34 | static ctl_table ax25_dir_table[] = { | |
35 | { | |
36 | .ctl_name = NET_AX25, | |
37 | .procname = "ax25", | |
38 | .mode = 0555, | |
39 | }, | |
40 | { .ctl_name = 0 } | |
41 | }; | |
42 | ||
43 | static 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 | ||
53 | static 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 | ||
197 | void 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 | ||
0da974f4 | 206 | if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) { |
1da177e4 LT |
207 | spin_unlock_bh(&ax25_dev_lock); |
208 | return; | |
209 | } | |
210 | ||
1da177e4 | 211 | for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) { |
0459d70a ACM |
212 | struct ctl_table *child = kmemdup(ax25_param_table, |
213 | sizeof(ax25_param_table), | |
214 | GFP_ATOMIC); | |
1da177e4 LT |
215 | 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 | } | |
1da177e4 LT |
222 | 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 | ||
0b4d4147 | 248 | ax25_table_header = register_sysctl_table(ax25_root_table); |
1da177e4 LT |
249 | } |
250 | ||
251 | void 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 | } |