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Linux/net/irda/irsysctl.c

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  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 unsigned int sysctl_min_tx_turn_time;
 44 extern unsigned int sysctl_max_tx_data_size;
 45 extern unsigned 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,
 77                       void __user *buffer, size_t *lenp, loff_t *ppos)
 78 {
 79         int ret;
 80 
 81         ret = proc_dostring(table, write, 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,
 94                     void __user *buffer, size_t *lenp, loff_t *ppos)
 95 {
 96        int ret;
 97 
 98        ret = proc_dointvec(table, write, 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                 .procname       = "discovery",
117                 .data           = &sysctl_discovery,
118                 .maxlen         = sizeof(int),
119                 .mode           = 0644,
120                 .proc_handler   = do_discovery,
121         },
122         {
123                 .procname       = "devname",
124                 .data           = sysctl_devname,
125                 .maxlen         = 65,
126                 .mode           = 0644,
127                 .proc_handler   = do_devname,
128         },
129 #ifdef CONFIG_IRDA_DEBUG
130         {
131                 .procname       = "debug",
132                 .data           = &irda_debug,
133                 .maxlen         = sizeof(int),
134                 .mode           = 0644,
135                 .proc_handler   = proc_dointvec
136         },
137 #endif
138 #ifdef CONFIG_IRDA_FAST_RR
139         {
140                 .procname       = "fast_poll_increase",
141                 .data           = &sysctl_fast_poll_increase,
142                 .maxlen         = sizeof(int),
143                 .mode           = 0644,
144                 .proc_handler   = proc_dointvec
145         },
146 #endif
147         {
148                 .procname       = "discovery_slots",
149                 .data           = &sysctl_discovery_slots,
150                 .maxlen         = sizeof(int),
151                 .mode           = 0644,
152                 .proc_handler   = proc_dointvec_minmax,
153                 .extra1         = &min_discovery_slots,
154                 .extra2         = &max_discovery_slots
155         },
156         {
157                 .procname       = "discovery_timeout",
158                 .data           = &sysctl_discovery_timeout,
159                 .maxlen         = sizeof(int),
160                 .mode           = 0644,
161                 .proc_handler   = proc_dointvec
162         },
163         {
164                 .procname       = "slot_timeout",
165                 .data           = &sysctl_slot_timeout,
166                 .maxlen         = sizeof(int),
167                 .mode           = 0644,
168                 .proc_handler   = proc_dointvec_minmax,
169                 .extra1         = &min_slot_timeout,
170                 .extra2         = &max_slot_timeout
171         },
172         {
173                 .procname       = "max_baud_rate",
174                 .data           = &sysctl_max_baud_rate,
175                 .maxlen         = sizeof(int),
176                 .mode           = 0644,
177                 .proc_handler   = proc_dointvec_minmax,
178                 .extra1         = &min_max_baud_rate,
179                 .extra2         = &max_max_baud_rate
180         },
181         {
182                 .procname       = "min_tx_turn_time",
183                 .data           = &sysctl_min_tx_turn_time,
184                 .maxlen         = sizeof(int),
185                 .mode           = 0644,
186                 .proc_handler   = proc_dointvec_minmax,
187                 .extra1         = &min_min_tx_turn_time,
188                 .extra2         = &max_min_tx_turn_time
189         },
190         {
191                 .procname       = "max_tx_data_size",
192                 .data           = &sysctl_max_tx_data_size,
193                 .maxlen         = sizeof(int),
194                 .mode           = 0644,
195                 .proc_handler   = proc_dointvec_minmax,
196                 .extra1         = &min_max_tx_data_size,
197                 .extra2         = &max_max_tx_data_size
198         },
199         {
200                 .procname       = "max_tx_window",
201                 .data           = &sysctl_max_tx_window,
202                 .maxlen         = sizeof(int),
203                 .mode           = 0644,
204                 .proc_handler   = proc_dointvec_minmax,
205                 .extra1         = &min_max_tx_window,
206                 .extra2         = &max_max_tx_window
207         },
208         {
209                 .procname       = "max_noreply_time",
210                 .data           = &sysctl_max_noreply_time,
211                 .maxlen         = sizeof(int),
212                 .mode           = 0644,
213                 .proc_handler   = proc_dointvec_minmax,
214                 .extra1         = &min_max_noreply_time,
215                 .extra2         = &max_max_noreply_time
216         },
217         {
218                 .procname       = "warn_noreply_time",
219                 .data           = &sysctl_warn_noreply_time,
220                 .maxlen         = sizeof(int),
221                 .mode           = 0644,
222                 .proc_handler   = proc_dointvec_minmax,
223                 .extra1         = &min_warn_noreply_time,
224                 .extra2         = &max_warn_noreply_time
225         },
226         {
227                 .procname       = "lap_keepalive_time",
228                 .data           = &sysctl_lap_keepalive_time,
229                 .maxlen         = sizeof(int),
230                 .mode           = 0644,
231                 .proc_handler   = proc_dointvec_minmax,
232                 .extra1         = &min_lap_keepalive_time,
233                 .extra2         = &max_lap_keepalive_time
234         },
235         { }
236 };
237 
238 static struct ctl_table_header *irda_table_header;
239 
240 /*
241  * Function irda_sysctl_register (void)
242  *
243  *    Register our sysctl interface
244  *
245  */
246 int __init irda_sysctl_register(void)
247 {
248         irda_table_header = register_net_sysctl(&init_net, "net/irda", irda_table);
249         if (!irda_table_header)
250                 return -ENOMEM;
251 
252         return 0;
253 }
254 
255 /*
256  * Function irda_sysctl_unregister (void)
257  *
258  *    Unregister our sysctl interface
259  *
260  */
261 void irda_sysctl_unregister(void)
262 {
263         unregister_net_sysctl_table(irda_table_header);
264 }
265 
266 
267 
268 

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