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>
  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 int         sysctl_compression = 0;
  47 extern char sysctl_devname[];
  48 extern int  sysctl_max_baud_rate;
  49 extern int  sysctl_min_tx_turn_time;
  50 extern int  sysctl_max_tx_data_size;
  51 extern int  sysctl_max_tx_window;
  52 extern int  sysctl_max_noreply_time;
  53 extern int  sysctl_warn_noreply_time;
  54 extern int  sysctl_lap_keepalive_time;
  55
  56 #ifdef CONFIG_IRDA_DEBUG
  57 extern unsigned int irda_debug;
  58 #endif
  59
  60 /* this is needed for the proc_dointvec_minmax - Jean II */
  61 static int max_discovery_slots = 16;            /* ??? */
  62 static int min_discovery_slots = 1;
  63 /* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
  64  * seems to require it. (from Dag's comment) */
  65 static int max_slot_timeout = 160;
  66 static int min_slot_timeout = 20;
  67 static int max_max_baud_rate = 16000000;        /* See qos.c - IrLAP spec */
  68 static int min_max_baud_rate = 2400;
  69 static int max_min_tx_turn_time = 10000;        /* See qos.c - IrLAP spec */
  70 static int min_min_tx_turn_time;
  71 static int max_max_tx_data_size = 2048;         /* See qos.c - IrLAP spec */
  72 static int min_max_tx_data_size = 64;
  73 static int max_max_tx_window = 7;               /* See qos.c - IrLAP spec */
  74 static int min_max_tx_window = 1;
  75 static int max_max_noreply_time = 40;           /* See qos.c - IrLAP spec */
  76 static int min_max_noreply_time = 3;
  77 static int max_warn_noreply_time = 3;           /* 3s == standard */
  78 static int min_warn_noreply_time = 1;           /* 1s == min WD_TIMER */
  79 static int max_lap_keepalive_time = 10000;      /* 10s */
  80 static int min_lap_keepalive_time = 100;        /* 100us */
  81 /* For other sysctl, I've no idea of the range. Maybe Dag could help
  82  * us on that - Jean II */
  83
  84 static int do_devname(ctl_table *table, int write, struct file *filp,
  85                       void *buffer, size_t *lenp)
  86 {
  87         int ret;
  88
  89         ret = proc_dostring(table, write, filp, buffer, lenp);
  90         if (ret == 0 && write) {
  91                 struct ias_value *val;
  92
  93                 val = irias_new_string_value(sysctl_devname);
  94                 if (val)
  95                         irias_object_change_attribute("Device", "DeviceName", val);
  96         }
  97         return ret;
  98 }
  99
 100 /* One file */
 101 static ctl_table irda_table[] = {
 102         {
 103                 .ctl_name       = DISCOVERY,
 104                 .procname       = "discovery",
 105                 .data           = &sysctl_discovery,
 106                 .maxlen         = sizeof(int),
 107                 .mode           = 0644,
 108                 .proc_handler   = &proc_dointvec
 109         },
 110         {
 111                 .ctl_name       = DEVNAME,
 112                 .procname       = "devname",
 113                 .data           = sysctl_devname,
 114                 .maxlen         = 65,
 115                 .mode           = 0644,
 116                 .proc_handler   = &do_devname,
 117                 .strategy       = &sysctl_string
 118         },
 119 #ifdef CONFIG_IRDA_DEBUG
 120         {
 121                 .ctl_name       = DEBUG,
 122                 .procname       = "debug",
 123                 .data           = &irda_debug,
 124                 .maxlen         = sizeof(int),
 125                 .mode           = 0644,
 126                 .proc_handler   = &proc_dointvec
 127         },
 128 #endif
 129 #ifdef CONFIG_IRDA_FAST_RR
 130         {
 131                 .ctl_name       = FAST_POLL,
 132                 .procname       = "fast_poll_increase",
 133                 .data           = &sysctl_fast_poll_increase,
 134                 .maxlen         = sizeof(int),
 135                 .mode           = 0644,
 136                 .proc_handler   = &proc_dointvec
 137         },
 138 #endif
 139         {
 140                 .ctl_name       = DISCOVERY_SLOTS,
 141                 .procname       = "discovery_slots",
 142                 .data           = &sysctl_discovery_slots,
 143                 .maxlen         = sizeof(int),
 144                 .mode           = 0644,
 145                 .proc_handler   = &proc_dointvec_minmax,
 146                 .strategy       = &sysctl_intvec,
 147                 .extra1         = &min_discovery_slots,
 148                 .extra2         = &max_discovery_slots
 149         },
 150         {
 151                 .ctl_name       = DISCOVERY_TIMEOUT,
 152                 .procname       = "discovery_timeout",
 153                 .data           = &sysctl_discovery_timeout,
 154                 .maxlen         = sizeof(int),
 155                 .mode           = 0644,
 156                 .proc_handler   = &proc_dointvec
 157         },
 158         {
 159                 .ctl_name       = SLOT_TIMEOUT,
 160                 .procname       = "slot_timeout",
 161                 .data           = &sysctl_slot_timeout,
 162                 .maxlen         = sizeof(int),
 163                 .mode           = 0644,
 164                 .proc_handler   = &proc_dointvec_minmax,
 165                 .strategy       = &sysctl_intvec,
 166                 .extra1         = &min_slot_timeout,
 167                 .extra2         = &max_slot_timeout
 168         },
 169         {
 170                 .ctl_name       = MAX_BAUD_RATE,
 171                 .procname       = "max_baud_rate",
 172                 .data           = &sysctl_max_baud_rate,
 173                 .maxlen         = sizeof(int),
 174                 .mode           = 0644,
 175                 .proc_handler   = &proc_dointvec_minmax,
 176                 .strategy       = &sysctl_intvec,
 177                 .extra1         = &min_max_baud_rate,
 178                 .extra2         = &max_max_baud_rate
 179         },
 180         {
 181                 .ctl_name       = MIN_TX_TURN_TIME,
 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                 .strategy       = &sysctl_intvec,
 188                 .extra1         = &min_min_tx_turn_time,
 189                 .extra2         = &max_min_tx_turn_time
 190         },
 191         {
 192                 .ctl_name       = MAX_TX_DATA_SIZE,
 193                 .procname       = "max_tx_data_size",
 194                 .data           = &sysctl_max_tx_data_size,
 195                 .maxlen         = sizeof(int),
 196                 .mode           = 0644,
 197                 .proc_handler   = &proc_dointvec_minmax,
 198                 .strategy       = &sysctl_intvec,
 199                 .extra1         = &min_max_tx_data_size,
 200                 .extra2         = &max_max_tx_data_size
 201         },
 202         {
 203                 .ctl_name       = MAX_TX_WINDOW,
 204                 .procname       = "max_tx_window",
 205                 .data           = &sysctl_max_tx_window,
 206                 .maxlen         = sizeof(int),
 207                 .mode           = 0644,
 208                 .proc_handler   = &proc_dointvec_minmax,
 209                 .strategy       = &sysctl_intvec,
 210                 .extra1         = &min_max_tx_window,
 211                 .extra2         = &max_max_tx_window
 212         },
 213         {
 214                 .ctl_name       = MAX_NOREPLY_TIME,
 215                 .procname       = "max_noreply_time",
 216                 .data           = &sysctl_max_noreply_time,
 217                 .maxlen         = sizeof(int),
 218                 .mode           = 0644,
 219                 .proc_handler   = &proc_dointvec_minmax,
 220                 .strategy       = &sysctl_intvec,
 221                 .extra1         = &min_max_noreply_time,
 222                 .extra2         = &max_max_noreply_time
 223         },
 224         {
 225                 .ctl_name       = WARN_NOREPLY_TIME,
 226                 .procname       = "warn_noreply_time",
 227                 .data           = &sysctl_warn_noreply_time,
 228                 .maxlen         = sizeof(int),
 229                 .mode           = 0644,
 230                 .proc_handler   = &proc_dointvec_minmax,
 231                 .strategy       = &sysctl_intvec,
 232                 .extra1         = &min_warn_noreply_time,
 233                 .extra2         = &max_warn_noreply_time
 234         },
 235         {
 236                 .ctl_name       = LAP_KEEPALIVE_TIME,
 237                 .procname       = "lap_keepalive_time",
 238                 .data           = &sysctl_lap_keepalive_time,
 239                 .maxlen         = sizeof(int),
 240                 .mode           = 0644,
 241                 .proc_handler   = &proc_dointvec_minmax,
 242                 .strategy       = &sysctl_intvec,
 243                 .extra1         = &min_lap_keepalive_time,
 244                 .extra2         = &max_lap_keepalive_time
 245         },
 246         { .ctl_name = 0 }
 247 };
 248
 249 /* One directory */
 250 static ctl_table irda_net_table[] = {
 251         {
 252                 .ctl_name       = NET_IRDA,
 253                 .procname       = "irda",
 254                 .maxlen         = 0,
 255                 .mode           = 0555,
 256                 .child          = irda_table
 257         },
 258         { .ctl_name = 0 }
 259 };
 260
 261 /* The parent directory */
 262 static ctl_table irda_root_table[] = {
 263         {
 264                 .ctl_name       = CTL_NET,
 265                 .procname       = "net",
 266                 .maxlen         = 0,
 267                 .mode           = 0555,
 268                 .child          = irda_net_table
 269         },
 270         { .ctl_name = 0 }
 271 };
 272
 273 static struct ctl_table_header *irda_table_header;
 274
 275 /*
 276  * Function irda_sysctl_register (void)
 277  *
 278  *    Register our sysctl interface
 279  *
 280  */
 281 int __init irda_sysctl_register(void)
 282 {
 283         irda_table_header = register_sysctl_table(irda_root_table, 0);
 284         if (!irda_table_header)
 285                 return -ENOMEM;
 286
 287         return 0;
 288 }
 289
 290 /*
 291  * Function irda_sysctl_unregister (void)
 292  *
 293  *    Unregister our sysctl interface
 294  *
 295  */
 296 void __exit irda_sysctl_unregister(void)
 297 {
 298         unregister_sysctl_table(irda_table_header);
 299 }
 300
 301
 302