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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 | |
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[] = {30000}; |
22 | static int min_t2[] = {1}, max_t2[] = {20000}; |
23 | static int min_t3[1], max_t3[] = {3600000}; |
24 | static int min_idle[1], max_idle[] = {65535000}; |
25 | static int min_n2[] = {1}, max_n2[] = {31}; |
26 | static int min_paclen[] = {1}, max_paclen[] = {512}; |
27 | static int min_proto[1], max_proto[] = { AX25_PROTO_MAX }; |
28 | #ifdef CONFIG_AX25_DAMA_SLAVE |
29 | static int min_ds_timeout[1], max_ds_timeout[] = {65535000}; |
30 | #endif |
31 | |
32 | static 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 | |
151 | int 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 | |
173 | void 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 | } |
185 |
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