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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/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}; |
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}; |
24 | static int min_n2[] = {1}, max_n2[] = {31}; |
25 | static int min_paclen[] = {1}, max_paclen[] = {512}; |
26 | static int min_proto[1], max_proto[] = { AX25_PROTO_MAX }; |
27 | #ifdef CONFIG_AX25_DAMA_SLAVE |
28 | static int min_ds_timeout[1], max_ds_timeout[] = {65535000}; |
29 | #endif |
30 | |
31 | static struct ctl_table_header *ax25_table_header; |
32 | |
33 | static ctl_table *ax25_table; |
34 | static int ax25_table_size; |
35 | |
36 | static struct ctl_path ax25_path[] = { |
37 | { .procname = "net", .ctl_name = CTL_NET, }, |
38 | { .procname = "ax25", .ctl_name = NET_AX25, }, |
39 | { } |
40 | }; |
41 | |
42 | static const ctl_table ax25_param_table[] = { |
43 | { |
44 | .ctl_name = NET_AX25_IP_DEFAULT_MODE, |
45 | .procname = "ip_default_mode", |
46 | .maxlen = sizeof(int), |
47 | .mode = 0644, |
48 | .proc_handler = proc_dointvec_minmax, |
49 | .strategy = sysctl_intvec, |
50 | .extra1 = &min_ipdefmode, |
51 | .extra2 = &max_ipdefmode |
52 | }, |
53 | { |
54 | .ctl_name = NET_AX25_DEFAULT_MODE, |
55 | .procname = "ax25_default_mode", |
56 | .maxlen = sizeof(int), |
57 | .mode = 0644, |
58 | .proc_handler = proc_dointvec_minmax, |
59 | .strategy = sysctl_intvec, |
60 | .extra1 = &min_axdefmode, |
61 | .extra2 = &max_axdefmode |
62 | }, |
63 | { |
64 | .ctl_name = NET_AX25_BACKOFF_TYPE, |
65 | .procname = "backoff_type", |
66 | .maxlen = sizeof(int), |
67 | .mode = 0644, |
68 | .proc_handler = proc_dointvec_minmax, |
69 | .strategy = sysctl_intvec, |
70 | .extra1 = &min_backoff, |
71 | .extra2 = &max_backoff |
72 | }, |
73 | { |
74 | .ctl_name = NET_AX25_CONNECT_MODE, |
75 | .procname = "connect_mode", |
76 | .maxlen = sizeof(int), |
77 | .mode = 0644, |
78 | .proc_handler = proc_dointvec_minmax, |
79 | .strategy = sysctl_intvec, |
80 | .extra1 = &min_conmode, |
81 | .extra2 = &max_conmode |
82 | }, |
83 | { |
84 | .ctl_name = NET_AX25_STANDARD_WINDOW, |
85 | .procname = "standard_window_size", |
86 | .maxlen = sizeof(int), |
87 | .mode = 0644, |
88 | .proc_handler = proc_dointvec_minmax, |
89 | .strategy = sysctl_intvec, |
90 | .extra1 = &min_window, |
91 | .extra2 = &max_window |
92 | }, |
93 | { |
94 | .ctl_name = NET_AX25_EXTENDED_WINDOW, |
95 | .procname = "extended_window_size", |
96 | .maxlen = sizeof(int), |
97 | .mode = 0644, |
98 | .proc_handler = proc_dointvec_minmax, |
99 | .strategy = sysctl_intvec, |
100 | .extra1 = &min_ewindow, |
101 | .extra2 = &max_ewindow |
102 | }, |
103 | { |
104 | .ctl_name = NET_AX25_T1_TIMEOUT, |
105 | .procname = "t1_timeout", |
106 | .maxlen = sizeof(int), |
107 | .mode = 0644, |
108 | .proc_handler = proc_dointvec_minmax, |
109 | .strategy = sysctl_intvec, |
110 | .extra1 = &min_t1, |
111 | .extra2 = &max_t1 |
112 | }, |
113 | { |
114 | .ctl_name = NET_AX25_T2_TIMEOUT, |
115 | .procname = "t2_timeout", |
116 | .maxlen = sizeof(int), |
117 | .mode = 0644, |
118 | .proc_handler = proc_dointvec_minmax, |
119 | .strategy = sysctl_intvec, |
120 | .extra1 = &min_t2, |
121 | .extra2 = &max_t2 |
122 | }, |
123 | { |
124 | .ctl_name = NET_AX25_T3_TIMEOUT, |
125 | .procname = "t3_timeout", |
126 | .maxlen = sizeof(int), |
127 | .mode = 0644, |
128 | .proc_handler = proc_dointvec_minmax, |
129 | .strategy = sysctl_intvec, |
130 | .extra1 = &min_t3, |
131 | .extra2 = &max_t3 |
132 | }, |
133 | { |
134 | .ctl_name = NET_AX25_IDLE_TIMEOUT, |
135 | .procname = "idle_timeout", |
136 | .maxlen = sizeof(int), |
137 | .mode = 0644, |
138 | .proc_handler = proc_dointvec_minmax, |
139 | .strategy = sysctl_intvec, |
140 | .extra1 = &min_idle, |
141 | .extra2 = &max_idle |
142 | }, |
143 | { |
144 | .ctl_name = NET_AX25_N2, |
145 | .procname = "maximum_retry_count", |
146 | .maxlen = sizeof(int), |
147 | .mode = 0644, |
148 | .proc_handler = proc_dointvec_minmax, |
149 | .strategy = sysctl_intvec, |
150 | .extra1 = &min_n2, |
151 | .extra2 = &max_n2 |
152 | }, |
153 | { |
154 | .ctl_name = NET_AX25_PACLEN, |
155 | .procname = "maximum_packet_length", |
156 | .maxlen = sizeof(int), |
157 | .mode = 0644, |
158 | .proc_handler = proc_dointvec_minmax, |
159 | .strategy = sysctl_intvec, |
160 | .extra1 = &min_paclen, |
161 | .extra2 = &max_paclen |
162 | }, |
163 | { |
164 | .ctl_name = NET_AX25_PROTOCOL, |
165 | .procname = "protocol", |
166 | .maxlen = sizeof(int), |
167 | .mode = 0644, |
168 | .proc_handler = proc_dointvec_minmax, |
169 | .strategy = sysctl_intvec, |
170 | .extra1 = &min_proto, |
171 | .extra2 = &max_proto |
172 | }, |
173 | #ifdef CONFIG_AX25_DAMA_SLAVE |
174 | { |
175 | .ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT, |
176 | .procname = "dama_slave_timeout", |
177 | .maxlen = sizeof(int), |
178 | .mode = 0644, |
179 | .proc_handler = proc_dointvec_minmax, |
180 | .strategy = sysctl_intvec, |
181 | .extra1 = &min_ds_timeout, |
182 | .extra2 = &max_ds_timeout |
183 | }, |
184 | #endif |
185 | |
186 | { .ctl_name = 0 } /* that's all, folks! */ |
187 | }; |
188 | |
189 | void ax25_register_sysctl(void) |
190 | { |
191 | ax25_dev *ax25_dev; |
192 | int n, k; |
193 | |
194 | spin_lock_bh(&ax25_dev_lock); |
195 | for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) |
196 | ax25_table_size += sizeof(ctl_table); |
197 | |
198 | if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) { |
199 | spin_unlock_bh(&ax25_dev_lock); |
200 | return; |
201 | } |
202 | |
203 | for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) { |
204 | struct ctl_table *child = kmemdup(ax25_param_table, |
205 | sizeof(ax25_param_table), |
206 | GFP_ATOMIC); |
207 | if (!child) { |
208 | while (n--) |
209 | kfree(ax25_table[n].child); |
210 | kfree(ax25_table); |
211 | spin_unlock_bh(&ax25_dev_lock); |
212 | return; |
213 | } |
214 | ax25_table[n].child = ax25_dev->systable = child; |
215 | ax25_table[n].ctl_name = n + 1; |
216 | ax25_table[n].procname = ax25_dev->dev->name; |
217 | ax25_table[n].mode = 0555; |
218 | |
219 | child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */ |
220 | |
221 | for (k = 0; k < AX25_MAX_VALUES; k++) |
222 | child[k].data = &ax25_dev->values[k]; |
223 | |
224 | n++; |
225 | } |
226 | spin_unlock_bh(&ax25_dev_lock); |
227 | |
228 | ax25_table_header = register_sysctl_paths(ax25_path, ax25_table); |
229 | } |
230 | |
231 | void ax25_unregister_sysctl(void) |
232 | { |
233 | ctl_table *p; |
234 | unregister_sysctl_table(ax25_table_header); |
235 | |
236 | for (p = ax25_table; p->ctl_name; p++) |
237 | kfree(p->child); |
238 | kfree(ax25_table); |
239 | } |
240 |
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