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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 | ||
c6995bdf PE |
34 | static struct ctl_path ax25_path[] = { |
35 | { .procname = "net", .ctl_name = CTL_NET, }, | |
36 | { .procname = "ax25", .ctl_name = NET_AX25, }, | |
37 | { } | |
1da177e4 | 38 | }; |
ffb20847 | 39 | |
1da177e4 LT |
40 | static const ctl_table ax25_param_table[] = { |
41 | { | |
42 | .ctl_name = NET_AX25_IP_DEFAULT_MODE, | |
43 | .procname = "ip_default_mode", | |
44 | .maxlen = sizeof(int), | |
45 | .mode = 0644, | |
46 | .proc_handler = &proc_dointvec_minmax, | |
47 | .strategy = &sysctl_intvec, | |
48 | .extra1 = &min_ipdefmode, | |
49 | .extra2 = &max_ipdefmode | |
50 | }, | |
51 | { | |
52 | .ctl_name = NET_AX25_DEFAULT_MODE, | |
53 | .procname = "ax25_default_mode", | |
54 | .maxlen = sizeof(int), | |
55 | .mode = 0644, | |
56 | .proc_handler = &proc_dointvec_minmax, | |
57 | .strategy = &sysctl_intvec, | |
58 | .extra1 = &min_axdefmode, | |
59 | .extra2 = &max_axdefmode | |
60 | }, | |
61 | { | |
62 | .ctl_name = NET_AX25_BACKOFF_TYPE, | |
63 | .procname = "backoff_type", | |
64 | .maxlen = sizeof(int), | |
65 | .mode = 0644, | |
66 | .proc_handler = &proc_dointvec_minmax, | |
67 | .strategy = &sysctl_intvec, | |
68 | .extra1 = &min_backoff, | |
69 | .extra2 = &max_backoff | |
70 | }, | |
71 | { | |
72 | .ctl_name = NET_AX25_CONNECT_MODE, | |
73 | .procname = "connect_mode", | |
74 | .maxlen = sizeof(int), | |
75 | .mode = 0644, | |
76 | .proc_handler = &proc_dointvec_minmax, | |
77 | .strategy = &sysctl_intvec, | |
78 | .extra1 = &min_conmode, | |
79 | .extra2 = &max_conmode | |
80 | }, | |
81 | { | |
82 | .ctl_name = NET_AX25_STANDARD_WINDOW, | |
83 | .procname = "standard_window_size", | |
84 | .maxlen = sizeof(int), | |
85 | .mode = 0644, | |
86 | .proc_handler = &proc_dointvec_minmax, | |
87 | .strategy = &sysctl_intvec, | |
88 | .extra1 = &min_window, | |
89 | .extra2 = &max_window | |
90 | }, | |
91 | { | |
92 | .ctl_name = NET_AX25_EXTENDED_WINDOW, | |
93 | .procname = "extended_window_size", | |
94 | .maxlen = sizeof(int), | |
95 | .mode = 0644, | |
96 | .proc_handler = &proc_dointvec_minmax, | |
97 | .strategy = &sysctl_intvec, | |
98 | .extra1 = &min_ewindow, | |
99 | .extra2 = &max_ewindow | |
100 | }, | |
101 | { | |
102 | .ctl_name = NET_AX25_T1_TIMEOUT, | |
103 | .procname = "t1_timeout", | |
104 | .maxlen = sizeof(int), | |
105 | .mode = 0644, | |
106 | .proc_handler = &proc_dointvec_minmax, | |
107 | .strategy = &sysctl_intvec, | |
108 | .extra1 = &min_t1, | |
109 | .extra2 = &max_t1 | |
110 | }, | |
111 | { | |
112 | .ctl_name = NET_AX25_T2_TIMEOUT, | |
113 | .procname = "t2_timeout", | |
114 | .maxlen = sizeof(int), | |
115 | .mode = 0644, | |
116 | .proc_handler = &proc_dointvec_minmax, | |
117 | .strategy = &sysctl_intvec, | |
118 | .extra1 = &min_t2, | |
119 | .extra2 = &max_t2 | |
120 | }, | |
121 | { | |
122 | .ctl_name = NET_AX25_T3_TIMEOUT, | |
123 | .procname = "t3_timeout", | |
124 | .maxlen = sizeof(int), | |
125 | .mode = 0644, | |
126 | .proc_handler = &proc_dointvec_minmax, | |
127 | .strategy = &sysctl_intvec, | |
128 | .extra1 = &min_t3, | |
129 | .extra2 = &max_t3 | |
130 | }, | |
131 | { | |
132 | .ctl_name = NET_AX25_IDLE_TIMEOUT, | |
133 | .procname = "idle_timeout", | |
134 | .maxlen = sizeof(int), | |
135 | .mode = 0644, | |
136 | .proc_handler = &proc_dointvec_minmax, | |
137 | .strategy = &sysctl_intvec, | |
138 | .extra1 = &min_idle, | |
139 | .extra2 = &max_idle | |
140 | }, | |
141 | { | |
142 | .ctl_name = NET_AX25_N2, | |
143 | .procname = "maximum_retry_count", | |
144 | .maxlen = sizeof(int), | |
145 | .mode = 0644, | |
146 | .proc_handler = &proc_dointvec_minmax, | |
147 | .strategy = &sysctl_intvec, | |
148 | .extra1 = &min_n2, | |
149 | .extra2 = &max_n2 | |
150 | }, | |
151 | { | |
152 | .ctl_name = NET_AX25_PACLEN, | |
153 | .procname = "maximum_packet_length", | |
154 | .maxlen = sizeof(int), | |
155 | .mode = 0644, | |
156 | .proc_handler = &proc_dointvec_minmax, | |
157 | .strategy = &sysctl_intvec, | |
158 | .extra1 = &min_paclen, | |
159 | .extra2 = &max_paclen | |
160 | }, | |
161 | { | |
162 | .ctl_name = NET_AX25_PROTOCOL, | |
163 | .procname = "protocol", | |
164 | .maxlen = sizeof(int), | |
165 | .mode = 0644, | |
166 | .proc_handler = &proc_dointvec_minmax, | |
167 | .strategy = &sysctl_intvec, | |
168 | .extra1 = &min_proto, | |
169 | .extra2 = &max_proto | |
170 | }, | |
ffb20847 | 171 | #ifdef CONFIG_AX25_DAMA_SLAVE |
1da177e4 LT |
172 | { |
173 | .ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT, | |
174 | .procname = "dama_slave_timeout", | |
175 | .maxlen = sizeof(int), | |
176 | .mode = 0644, | |
177 | .proc_handler = &proc_dointvec_minmax, | |
178 | .strategy = &sysctl_intvec, | |
179 | .extra1 = &min_ds_timeout, | |
180 | .extra2 = &max_ds_timeout | |
181 | }, | |
ffb20847 RB |
182 | #endif |
183 | ||
1da177e4 LT |
184 | { .ctl_name = 0 } /* that's all, folks! */ |
185 | }; | |
186 | ||
187 | void ax25_register_sysctl(void) | |
188 | { | |
189 | ax25_dev *ax25_dev; | |
190 | int n, k; | |
191 | ||
192 | spin_lock_bh(&ax25_dev_lock); | |
193 | for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) | |
194 | ax25_table_size += sizeof(ctl_table); | |
195 | ||
0da974f4 | 196 | if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) { |
1da177e4 LT |
197 | spin_unlock_bh(&ax25_dev_lock); |
198 | return; | |
199 | } | |
200 | ||
1da177e4 | 201 | for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) { |
0459d70a ACM |
202 | struct ctl_table *child = kmemdup(ax25_param_table, |
203 | sizeof(ax25_param_table), | |
204 | GFP_ATOMIC); | |
1da177e4 LT |
205 | if (!child) { |
206 | while (n--) | |
207 | kfree(ax25_table[n].child); | |
208 | kfree(ax25_table); | |
209 | spin_unlock_bh(&ax25_dev_lock); | |
210 | return; | |
211 | } | |
1da177e4 LT |
212 | ax25_table[n].child = ax25_dev->systable = child; |
213 | ax25_table[n].ctl_name = n + 1; | |
214 | ax25_table[n].procname = ax25_dev->dev->name; | |
215 | ax25_table[n].mode = 0555; | |
216 | ||
1da177e4 LT |
217 | child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */ |
218 | ||
219 | for (k = 0; k < AX25_MAX_VALUES; k++) | |
220 | child[k].data = &ax25_dev->values[k]; | |
221 | ||
222 | n++; | |
223 | } | |
224 | spin_unlock_bh(&ax25_dev_lock); | |
225 | ||
c6995bdf | 226 | ax25_table_header = register_sysctl_paths(ax25_path, ax25_table); |
1da177e4 LT |
227 | } |
228 | ||
229 | void ax25_unregister_sysctl(void) | |
230 | { | |
231 | ctl_table *p; | |
232 | unregister_sysctl_table(ax25_table_header); | |
233 | ||
1da177e4 LT |
234 | for (p = ax25_table; p->ctl_name; p++) |
235 | kfree(p->child); | |
236 | kfree(ax25_table); | |
237 | } |