[DCCP]: Fix leak in net/dccp/ipv4.c
[linux-2.6.git] / net / irda / irsysctl.c
1 /*********************************************************************
2  *                
3  * Filename:      irsysctl.c
4  * Version:       1.0
5  * Description:   Sysctl interface for IrDA
6  * Status:        Experimental.
7  * Author:        Dag Brattli <dagb@cs.uit.no>
8  * Created at:    Sun May 24 22:12:06 1998
9  * Modified at:   Fri Jun  4 02:50:15 1999
10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
11  * 
12  *     Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
13  *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
14  *      
15  *     This program is free software; you can redistribute it and/or 
16  *     modify it under the terms of the GNU General Public License as 
17  *     published by the Free Software Foundation; either version 2 of 
18  *     the License, or (at your option) any later version.
19  *  
20  *     Neither Dag Brattli nor University of Tromsø admit liability nor
21  *     provide warranty for any of this software. This material is 
22  *     provided "AS-IS" and at no charge.
23  *     
24  ********************************************************************/
25
26 #include <linux/config.h>
27 #include <linux/mm.h>
28 #include <linux/ctype.h>
29 #include <linux/sysctl.h>
30 #include <linux/init.h>
31
32 #include <net/irda/irda.h>              /* irda_debug */
33 #include <net/irda/irias_object.h>
34
35 #define NET_IRDA 412 /* Random number */
36 enum { DISCOVERY=1, DEVNAME, DEBUG, FAST_POLL, DISCOVERY_SLOTS,
37        DISCOVERY_TIMEOUT, SLOT_TIMEOUT, MAX_BAUD_RATE, MIN_TX_TURN_TIME,
38        MAX_TX_DATA_SIZE, MAX_TX_WINDOW, MAX_NOREPLY_TIME, WARN_NOREPLY_TIME,
39        LAP_KEEPALIVE_TIME };
40
41 extern int  sysctl_discovery;
42 extern int  sysctl_discovery_slots;
43 extern int  sysctl_discovery_timeout;
44 extern int  sysctl_slot_timeout;
45 extern int  sysctl_fast_poll_increase;
46 extern char sysctl_devname[];
47 extern int  sysctl_max_baud_rate;
48 extern int  sysctl_min_tx_turn_time;
49 extern int  sysctl_max_tx_data_size;
50 extern int  sysctl_max_tx_window;
51 extern int  sysctl_max_noreply_time;
52 extern int  sysctl_warn_noreply_time;
53 extern int  sysctl_lap_keepalive_time;
54
55 /* this is needed for the proc_dointvec_minmax - Jean II */
56 static int max_discovery_slots = 16;            /* ??? */
57 static int min_discovery_slots = 1;
58 /* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
59  * seems to require it. (from Dag's comment) */
60 static int max_slot_timeout = 160;
61 static int min_slot_timeout = 20;
62 static int max_max_baud_rate = 16000000;        /* See qos.c - IrLAP spec */
63 static int min_max_baud_rate = 2400;
64 static int max_min_tx_turn_time = 10000;        /* See qos.c - IrLAP spec */
65 static int min_min_tx_turn_time;
66 static int max_max_tx_data_size = 2048;         /* See qos.c - IrLAP spec */
67 static int min_max_tx_data_size = 64;
68 static int max_max_tx_window = 7;               /* See qos.c - IrLAP spec */
69 static int min_max_tx_window = 1;
70 static int max_max_noreply_time = 40;           /* See qos.c - IrLAP spec */
71 static int min_max_noreply_time = 3;
72 static int max_warn_noreply_time = 3;           /* 3s == standard */
73 static int min_warn_noreply_time = 1;           /* 1s == min WD_TIMER */
74 static int max_lap_keepalive_time = 10000;      /* 10s */
75 static int min_lap_keepalive_time = 100;        /* 100us */
76 /* For other sysctl, I've no idea of the range. Maybe Dag could help
77  * us on that - Jean II */
78
79 static int do_devname(ctl_table *table, int write, struct file *filp,
80                       void __user *buffer, size_t *lenp, loff_t *ppos)
81 {
82         int ret;
83
84         ret = proc_dostring(table, write, filp, buffer, lenp, ppos);
85         if (ret == 0 && write) {
86                 struct ias_value *val;
87
88                 val = irias_new_string_value(sysctl_devname);
89                 if (val)
90                         irias_object_change_attribute("Device", "DeviceName", val);
91         }
92         return ret;
93 }
94
95 /* One file */
96 static ctl_table irda_table[] = {
97         {
98                 .ctl_name       = DISCOVERY,
99                 .procname       = "discovery",
100                 .data           = &sysctl_discovery,
101                 .maxlen         = sizeof(int),
102                 .mode           = 0644,
103                 .proc_handler   = &proc_dointvec
104         },
105         {
106                 .ctl_name       = DEVNAME,
107                 .procname       = "devname",
108                 .data           = sysctl_devname,
109                 .maxlen         = 65,
110                 .mode           = 0644,
111                 .proc_handler   = &do_devname,
112                 .strategy       = &sysctl_string
113         },
114 #ifdef CONFIG_IRDA_DEBUG
115         {
116                 .ctl_name       = DEBUG,
117                 .procname       = "debug",
118                 .data           = &irda_debug,
119                 .maxlen         = sizeof(int),
120                 .mode           = 0644,
121                 .proc_handler   = &proc_dointvec
122         },
123 #endif
124 #ifdef CONFIG_IRDA_FAST_RR
125         {
126                 .ctl_name       = FAST_POLL,
127                 .procname       = "fast_poll_increase",
128                 .data           = &sysctl_fast_poll_increase,
129                 .maxlen         = sizeof(int),
130                 .mode           = 0644,
131                 .proc_handler   = &proc_dointvec
132         },
133 #endif
134         {
135                 .ctl_name       = DISCOVERY_SLOTS,
136                 .procname       = "discovery_slots",
137                 .data           = &sysctl_discovery_slots,
138                 .maxlen         = sizeof(int),
139                 .mode           = 0644,
140                 .proc_handler   = &proc_dointvec_minmax,
141                 .strategy       = &sysctl_intvec,
142                 .extra1         = &min_discovery_slots,
143                 .extra2         = &max_discovery_slots
144         },
145         {
146                 .ctl_name       = DISCOVERY_TIMEOUT,
147                 .procname       = "discovery_timeout",
148                 .data           = &sysctl_discovery_timeout,
149                 .maxlen         = sizeof(int),
150                 .mode           = 0644,
151                 .proc_handler   = &proc_dointvec
152         },
153         {
154                 .ctl_name       = SLOT_TIMEOUT,
155                 .procname       = "slot_timeout",
156                 .data           = &sysctl_slot_timeout,
157                 .maxlen         = sizeof(int),
158                 .mode           = 0644,
159                 .proc_handler   = &proc_dointvec_minmax,
160                 .strategy       = &sysctl_intvec,
161                 .extra1         = &min_slot_timeout,
162                 .extra2         = &max_slot_timeout
163         },
164         {
165                 .ctl_name       = MAX_BAUD_RATE,
166                 .procname       = "max_baud_rate",
167                 .data           = &sysctl_max_baud_rate,
168                 .maxlen         = sizeof(int),
169                 .mode           = 0644,
170                 .proc_handler   = &proc_dointvec_minmax,
171                 .strategy       = &sysctl_intvec,
172                 .extra1         = &min_max_baud_rate,
173                 .extra2         = &max_max_baud_rate
174         },
175         {
176                 .ctl_name       = MIN_TX_TURN_TIME,
177                 .procname       = "min_tx_turn_time",
178                 .data           = &sysctl_min_tx_turn_time,
179                 .maxlen         = sizeof(int),
180                 .mode           = 0644,
181                 .proc_handler   = &proc_dointvec_minmax,
182                 .strategy       = &sysctl_intvec,
183                 .extra1         = &min_min_tx_turn_time,
184                 .extra2         = &max_min_tx_turn_time
185         },
186         {
187                 .ctl_name       = MAX_TX_DATA_SIZE,
188                 .procname       = "max_tx_data_size",
189                 .data           = &sysctl_max_tx_data_size,
190                 .maxlen         = sizeof(int),
191                 .mode           = 0644,
192                 .proc_handler   = &proc_dointvec_minmax,
193                 .strategy       = &sysctl_intvec,
194                 .extra1         = &min_max_tx_data_size,
195                 .extra2         = &max_max_tx_data_size
196         },
197         {
198                 .ctl_name       = MAX_TX_WINDOW,
199                 .procname       = "max_tx_window",
200                 .data           = &sysctl_max_tx_window,
201                 .maxlen         = sizeof(int),
202                 .mode           = 0644,
203                 .proc_handler   = &proc_dointvec_minmax,
204                 .strategy       = &sysctl_intvec,
205                 .extra1         = &min_max_tx_window,
206                 .extra2         = &max_max_tx_window
207         },
208         {
209                 .ctl_name       = MAX_NOREPLY_TIME,
210                 .procname       = "max_noreply_time",
211                 .data           = &sysctl_max_noreply_time,
212                 .maxlen         = sizeof(int),
213                 .mode           = 0644,
214                 .proc_handler   = &proc_dointvec_minmax,
215                 .strategy       = &sysctl_intvec,
216                 .extra1         = &min_max_noreply_time,
217                 .extra2         = &max_max_noreply_time
218         },
219         {
220                 .ctl_name       = WARN_NOREPLY_TIME,
221                 .procname       = "warn_noreply_time",
222                 .data           = &sysctl_warn_noreply_time,
223                 .maxlen         = sizeof(int),
224                 .mode           = 0644,
225                 .proc_handler   = &proc_dointvec_minmax,
226                 .strategy       = &sysctl_intvec,
227                 .extra1         = &min_warn_noreply_time,
228                 .extra2         = &max_warn_noreply_time
229         },
230         {
231                 .ctl_name       = LAP_KEEPALIVE_TIME,
232                 .procname       = "lap_keepalive_time",
233                 .data           = &sysctl_lap_keepalive_time,
234                 .maxlen         = sizeof(int),
235                 .mode           = 0644,
236                 .proc_handler   = &proc_dointvec_minmax,
237                 .strategy       = &sysctl_intvec,
238                 .extra1         = &min_lap_keepalive_time,
239                 .extra2         = &max_lap_keepalive_time
240         },
241         { .ctl_name = 0 }
242 };
243
244 /* One directory */
245 static ctl_table irda_net_table[] = {
246         {
247                 .ctl_name       = NET_IRDA,
248                 .procname       = "irda",
249                 .maxlen         = 0,
250                 .mode           = 0555,
251                 .child          = irda_table
252         },
253         { .ctl_name = 0 }
254 };
255
256 /* The parent directory */
257 static ctl_table irda_root_table[] = {
258         {
259                 .ctl_name       = CTL_NET,
260                 .procname       = "net",
261                 .maxlen         = 0,
262                 .mode           = 0555,
263                 .child          = irda_net_table
264         },
265         { .ctl_name = 0 }
266 };
267
268 static struct ctl_table_header *irda_table_header;
269
270 /*
271  * Function irda_sysctl_register (void)
272  *
273  *    Register our sysctl interface
274  *
275  */
276 int __init irda_sysctl_register(void)
277 {
278         irda_table_header = register_sysctl_table(irda_root_table, 0);
279         if (!irda_table_header)
280                 return -ENOMEM;
281
282         return 0;
283 }
284
285 /*
286  * Function irda_sysctl_unregister (void)
287  *
288  *    Unregister our sysctl interface
289  *
290  */
291 void __exit irda_sysctl_unregister(void) 
292 {
293         unregister_sysctl_table(irda_table_header);
294 }
295
296
297