ipv4: flush route cache after change accept_local
[linux-2.6.git] / net / ax25 / sysctl_net_ax25.c
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 struct ctl_table_header *ax25_table_header;
33
34 static ctl_table *ax25_table;
35 static int ax25_table_size;
36
37 static struct ctl_path ax25_path[] = {
38         { .procname = "net", },
39         { .procname = "ax25", },
40         { }
41 };
42
43 static const ctl_table ax25_param_table[] = {
44         {
45                 .procname       = "ip_default_mode",
46                 .maxlen         = sizeof(int),
47                 .mode           = 0644,
48                 .proc_handler   = proc_dointvec_minmax,
49                 .extra1         = &min_ipdefmode,
50                 .extra2         = &max_ipdefmode
51         },
52         {
53                 .procname       = "ax25_default_mode",
54                 .maxlen         = sizeof(int),
55                 .mode           = 0644,
56                 .proc_handler   = proc_dointvec_minmax,
57                 .extra1         = &min_axdefmode,
58                 .extra2         = &max_axdefmode
59         },
60         {
61                 .procname       = "backoff_type",
62                 .maxlen         = sizeof(int),
63                 .mode           = 0644,
64                 .proc_handler   = proc_dointvec_minmax,
65                 .extra1         = &min_backoff,
66                 .extra2         = &max_backoff
67         },
68         {
69                 .procname       = "connect_mode",
70                 .maxlen         = sizeof(int),
71                 .mode           = 0644,
72                 .proc_handler   = proc_dointvec_minmax,
73                 .extra1         = &min_conmode,
74                 .extra2         = &max_conmode
75         },
76         {
77                 .procname       = "standard_window_size",
78                 .maxlen         = sizeof(int),
79                 .mode           = 0644,
80                 .proc_handler   = proc_dointvec_minmax,
81                 .extra1         = &min_window,
82                 .extra2         = &max_window
83         },
84         {
85                 .procname       = "extended_window_size",
86                 .maxlen         = sizeof(int),
87                 .mode           = 0644,
88                 .proc_handler   = proc_dointvec_minmax,
89                 .extra1         = &min_ewindow,
90                 .extra2         = &max_ewindow
91         },
92         {
93                 .procname       = "t1_timeout",
94                 .maxlen         = sizeof(int),
95                 .mode           = 0644,
96                 .proc_handler   = proc_dointvec_minmax,
97                 .extra1         = &min_t1,
98                 .extra2         = &max_t1
99         },
100         {
101                 .procname       = "t2_timeout",
102                 .maxlen         = sizeof(int),
103                 .mode           = 0644,
104                 .proc_handler   = proc_dointvec_minmax,
105                 .extra1         = &min_t2,
106                 .extra2         = &max_t2
107         },
108         {
109                 .procname       = "t3_timeout",
110                 .maxlen         = sizeof(int),
111                 .mode           = 0644,
112                 .proc_handler   = proc_dointvec_minmax,
113                 .extra1         = &min_t3,
114                 .extra2         = &max_t3
115         },
116         {
117                 .procname       = "idle_timeout",
118                 .maxlen         = sizeof(int),
119                 .mode           = 0644,
120                 .proc_handler   = proc_dointvec_minmax,
121                 .extra1         = &min_idle,
122                 .extra2         = &max_idle
123         },
124         {
125                 .procname       = "maximum_retry_count",
126                 .maxlen         = sizeof(int),
127                 .mode           = 0644,
128                 .proc_handler   = proc_dointvec_minmax,
129                 .extra1         = &min_n2,
130                 .extra2         = &max_n2
131         },
132         {
133                 .procname       = "maximum_packet_length",
134                 .maxlen         = sizeof(int),
135                 .mode           = 0644,
136                 .proc_handler   = proc_dointvec_minmax,
137                 .extra1         = &min_paclen,
138                 .extra2         = &max_paclen
139         },
140         {
141                 .procname       = "protocol",
142                 .maxlen         = sizeof(int),
143                 .mode           = 0644,
144                 .proc_handler   = proc_dointvec_minmax,
145                 .extra1         = &min_proto,
146                 .extra2         = &max_proto
147         },
148 #ifdef CONFIG_AX25_DAMA_SLAVE
149         {
150                 .procname       = "dama_slave_timeout",
151                 .maxlen         = sizeof(int),
152                 .mode           = 0644,
153                 .proc_handler   = proc_dointvec_minmax,
154                 .extra1         = &min_ds_timeout,
155                 .extra2         = &max_ds_timeout
156         },
157 #endif
158
159         { }     /* that's all, folks! */
160 };
161
162 void ax25_register_sysctl(void)
163 {
164         ax25_dev *ax25_dev;
165         int n, k;
166
167         spin_lock_bh(&ax25_dev_lock);
168         for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
169                 ax25_table_size += sizeof(ctl_table);
170
171         if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {
172                 spin_unlock_bh(&ax25_dev_lock);
173                 return;
174         }
175
176         for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {
177                 struct ctl_table *child = kmemdup(ax25_param_table,
178                                                   sizeof(ax25_param_table),
179                                                   GFP_ATOMIC);
180                 if (!child) {
181                         while (n--)
182                                 kfree(ax25_table[n].child);
183                         kfree(ax25_table);
184                         spin_unlock_bh(&ax25_dev_lock);
185                         return;
186                 }
187                 ax25_table[n].child = ax25_dev->systable = child;
188                 ax25_table[n].procname     = ax25_dev->dev->name;
189                 ax25_table[n].mode         = 0555;
190
191
192                 for (k = 0; k < AX25_MAX_VALUES; k++)
193                         child[k].data = &ax25_dev->values[k];
194
195                 n++;
196         }
197         spin_unlock_bh(&ax25_dev_lock);
198
199         ax25_table_header = register_sysctl_paths(ax25_path, ax25_table);
200 }
201
202 void ax25_unregister_sysctl(void)
203 {
204         ctl_table *p;
205         unregister_sysctl_table(ax25_table_header);
206
207         for (p = ax25_table; p->procname; p++)
208                 kfree(p->child);
209         kfree(ax25_table);
210 }