irda: Use SKB queue and list helpers instead of doing it by-hand.
[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/mm.h>
27 #include <linux/ctype.h>
28 #include <linux/sysctl.h>
29 #include <linux/init.h>
30
31 #include <net/irda/irda.h>              /* irda_debug */
32 #include <net/irda/irlmp.h>
33 #include <net/irda/timer.h>
34 #include <net/irda/irias_object.h>
35
36 extern int  sysctl_discovery;
37 extern int  sysctl_discovery_slots;
38 extern int  sysctl_discovery_timeout;
39 extern int  sysctl_slot_timeout;
40 extern int  sysctl_fast_poll_increase;
41 extern char sysctl_devname[];
42 extern int  sysctl_max_baud_rate;
43 extern int  sysctl_min_tx_turn_time;
44 extern int  sysctl_max_tx_data_size;
45 extern int  sysctl_max_tx_window;
46 extern int  sysctl_max_noreply_time;
47 extern int  sysctl_warn_noreply_time;
48 extern int  sysctl_lap_keepalive_time;
49
50 extern struct irlmp_cb *irlmp;
51
52 /* this is needed for the proc_dointvec_minmax - Jean II */
53 static int max_discovery_slots = 16;            /* ??? */
54 static int min_discovery_slots = 1;
55 /* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
56  * seems to require it. (from Dag's comment) */
57 static int max_slot_timeout = 160;
58 static int min_slot_timeout = 20;
59 static int max_max_baud_rate = 16000000;        /* See qos.c - IrLAP spec */
60 static int min_max_baud_rate = 2400;
61 static int max_min_tx_turn_time = 10000;        /* See qos.c - IrLAP spec */
62 static int min_min_tx_turn_time;
63 static int max_max_tx_data_size = 2048;         /* See qos.c - IrLAP spec */
64 static int min_max_tx_data_size = 64;
65 static int max_max_tx_window = 7;               /* See qos.c - IrLAP spec */
66 static int min_max_tx_window = 1;
67 static int max_max_noreply_time = 40;           /* See qos.c - IrLAP spec */
68 static int min_max_noreply_time = 3;
69 static int max_warn_noreply_time = 3;           /* 3s == standard */
70 static int min_warn_noreply_time = 1;           /* 1s == min WD_TIMER */
71 static int max_lap_keepalive_time = 10000;      /* 10s */
72 static int min_lap_keepalive_time = 100;        /* 100us */
73 /* For other sysctl, I've no idea of the range. Maybe Dag could help
74  * us on that - Jean II */
75
76 static int do_devname(ctl_table *table, int write, struct file *filp,
77                       void __user *buffer, size_t *lenp, loff_t *ppos)
78 {
79         int ret;
80
81         ret = proc_dostring(table, write, filp, buffer, lenp, ppos);
82         if (ret == 0 && write) {
83                 struct ias_value *val;
84
85                 val = irias_new_string_value(sysctl_devname);
86                 if (val)
87                         irias_object_change_attribute("Device", "DeviceName", val);
88         }
89         return ret;
90 }
91
92
93 static int do_discovery(ctl_table *table, int write, struct file *filp,
94                     void __user *buffer, size_t *lenp, loff_t *ppos)
95 {
96        int ret;
97
98        ret = proc_dointvec(table, write, filp, buffer, lenp, ppos);
99        if (ret)
100                return ret;
101
102        if (irlmp == NULL)
103                return -ENODEV;
104
105        if (sysctl_discovery)
106                irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout*HZ);
107        else
108                del_timer_sync(&irlmp->discovery_timer);
109
110        return ret;
111 }
112
113 /* One file */
114 static ctl_table irda_table[] = {
115         {
116                 .ctl_name       = NET_IRDA_DISCOVERY,
117                 .procname       = "discovery",
118                 .data           = &sysctl_discovery,
119                 .maxlen         = sizeof(int),
120                 .mode           = 0644,
121                 .proc_handler   = do_discovery,
122                 .strategy       = sysctl_intvec
123         },
124         {
125                 .ctl_name       = NET_IRDA_DEVNAME,
126                 .procname       = "devname",
127                 .data           = sysctl_devname,
128                 .maxlen         = 65,
129                 .mode           = 0644,
130                 .proc_handler   = do_devname,
131                 .strategy       = sysctl_string
132         },
133 #ifdef CONFIG_IRDA_DEBUG
134         {
135                 .ctl_name       = NET_IRDA_DEBUG,
136                 .procname       = "debug",
137                 .data           = &irda_debug,
138                 .maxlen         = sizeof(int),
139                 .mode           = 0644,
140                 .proc_handler   = proc_dointvec
141         },
142 #endif
143 #ifdef CONFIG_IRDA_FAST_RR
144         {
145                 .ctl_name       = NET_IRDA_FAST_POLL,
146                 .procname       = "fast_poll_increase",
147                 .data           = &sysctl_fast_poll_increase,
148                 .maxlen         = sizeof(int),
149                 .mode           = 0644,
150                 .proc_handler   = proc_dointvec
151         },
152 #endif
153         {
154                 .ctl_name       = NET_IRDA_DISCOVERY_SLOTS,
155                 .procname       = "discovery_slots",
156                 .data           = &sysctl_discovery_slots,
157                 .maxlen         = sizeof(int),
158                 .mode           = 0644,
159                 .proc_handler   = proc_dointvec_minmax,
160                 .strategy       = sysctl_intvec,
161                 .extra1         = &min_discovery_slots,
162                 .extra2         = &max_discovery_slots
163         },
164         {
165                 .ctl_name       = NET_IRDA_DISCOVERY_TIMEOUT,
166                 .procname       = "discovery_timeout",
167                 .data           = &sysctl_discovery_timeout,
168                 .maxlen         = sizeof(int),
169                 .mode           = 0644,
170                 .proc_handler   = proc_dointvec
171         },
172         {
173                 .ctl_name       = NET_IRDA_SLOT_TIMEOUT,
174                 .procname       = "slot_timeout",
175                 .data           = &sysctl_slot_timeout,
176                 .maxlen         = sizeof(int),
177                 .mode           = 0644,
178                 .proc_handler   = proc_dointvec_minmax,
179                 .strategy       = sysctl_intvec,
180                 .extra1         = &min_slot_timeout,
181                 .extra2         = &max_slot_timeout
182         },
183         {
184                 .ctl_name       = NET_IRDA_MAX_BAUD_RATE,
185                 .procname       = "max_baud_rate",
186                 .data           = &sysctl_max_baud_rate,
187                 .maxlen         = sizeof(int),
188                 .mode           = 0644,
189                 .proc_handler   = proc_dointvec_minmax,
190                 .strategy       = sysctl_intvec,
191                 .extra1         = &min_max_baud_rate,
192                 .extra2         = &max_max_baud_rate
193         },
194         {
195                 .ctl_name       = NET_IRDA_MIN_TX_TURN_TIME,
196                 .procname       = "min_tx_turn_time",
197                 .data           = &sysctl_min_tx_turn_time,
198                 .maxlen         = sizeof(int),
199                 .mode           = 0644,
200                 .proc_handler   = proc_dointvec_minmax,
201                 .strategy       = sysctl_intvec,
202                 .extra1         = &min_min_tx_turn_time,
203                 .extra2         = &max_min_tx_turn_time
204         },
205         {
206                 .ctl_name       = NET_IRDA_MAX_TX_DATA_SIZE,
207                 .procname       = "max_tx_data_size",
208                 .data           = &sysctl_max_tx_data_size,
209                 .maxlen         = sizeof(int),
210                 .mode           = 0644,
211                 .proc_handler   = proc_dointvec_minmax,
212                 .strategy       = sysctl_intvec,
213                 .extra1         = &min_max_tx_data_size,
214                 .extra2         = &max_max_tx_data_size
215         },
216         {
217                 .ctl_name       = NET_IRDA_MAX_TX_WINDOW,
218                 .procname       = "max_tx_window",
219                 .data           = &sysctl_max_tx_window,
220                 .maxlen         = sizeof(int),
221                 .mode           = 0644,
222                 .proc_handler   = proc_dointvec_minmax,
223                 .strategy       = sysctl_intvec,
224                 .extra1         = &min_max_tx_window,
225                 .extra2         = &max_max_tx_window
226         },
227         {
228                 .ctl_name       = NET_IRDA_MAX_NOREPLY_TIME,
229                 .procname       = "max_noreply_time",
230                 .data           = &sysctl_max_noreply_time,
231                 .maxlen         = sizeof(int),
232                 .mode           = 0644,
233                 .proc_handler   = proc_dointvec_minmax,
234                 .strategy       = sysctl_intvec,
235                 .extra1         = &min_max_noreply_time,
236                 .extra2         = &max_max_noreply_time
237         },
238         {
239                 .ctl_name       = NET_IRDA_WARN_NOREPLY_TIME,
240                 .procname       = "warn_noreply_time",
241                 .data           = &sysctl_warn_noreply_time,
242                 .maxlen         = sizeof(int),
243                 .mode           = 0644,
244                 .proc_handler   = proc_dointvec_minmax,
245                 .strategy       = sysctl_intvec,
246                 .extra1         = &min_warn_noreply_time,
247                 .extra2         = &max_warn_noreply_time
248         },
249         {
250                 .ctl_name       = NET_IRDA_LAP_KEEPALIVE_TIME,
251                 .procname       = "lap_keepalive_time",
252                 .data           = &sysctl_lap_keepalive_time,
253                 .maxlen         = sizeof(int),
254                 .mode           = 0644,
255                 .proc_handler   = proc_dointvec_minmax,
256                 .strategy       = sysctl_intvec,
257                 .extra1         = &min_lap_keepalive_time,
258                 .extra2         = &max_lap_keepalive_time
259         },
260         { .ctl_name = 0 }
261 };
262
263 static struct ctl_path irda_path[] = {
264         { .procname = "net", .ctl_name = CTL_NET, },
265         { .procname = "irda", .ctl_name = NET_IRDA, },
266         { }
267 };
268
269 static struct ctl_table_header *irda_table_header;
270
271 /*
272  * Function irda_sysctl_register (void)
273  *
274  *    Register our sysctl interface
275  *
276  */
277 int __init irda_sysctl_register(void)
278 {
279         irda_table_header = register_sysctl_paths(irda_path, irda_table);
280         if (!irda_table_header)
281                 return -ENOMEM;
282
283         return 0;
284 }
285
286 /*
287  * Function irda_sysctl_unregister (void)
288  *
289  *    Unregister our sysctl interface
290  *
291  */
292 void irda_sysctl_unregister(void)
293 {
294         unregister_sysctl_table(irda_table_header);
295 }
296
297
298