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 Troms� 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/irias_object.h> 33 34#define NET_IRDA 412 /* Random number */ 35enum { DISCOVERY=1, DEVNAME, DEBUG, FAST_POLL, DISCOVERY_SLOTS, 36 DISCOVERY_TIMEOUT, SLOT_TIMEOUT, MAX_BAUD_RATE, MIN_TX_TURN_TIME, 37 MAX_TX_DATA_SIZE, MAX_TX_WINDOW, MAX_NOREPLY_TIME, WARN_NOREPLY_TIME, 38 LAP_KEEPALIVE_TIME }; 39 40extern int sysctl_discovery; 41extern int sysctl_discovery_slots; 42extern int sysctl_discovery_timeout; 43extern int sysctl_slot_timeout; 44extern int sysctl_fast_poll_increase; 45extern char sysctl_devname[]; 46extern int sysctl_max_baud_rate; 47extern int sysctl_min_tx_turn_time; 48extern int sysctl_max_tx_data_size; 49extern int sysctl_max_tx_window; 50extern int sysctl_max_noreply_time; 51extern int sysctl_warn_noreply_time; 52extern int sysctl_lap_keepalive_time; 53 54/* this is needed for the proc_dointvec_minmax - Jean II */ 55static int max_discovery_slots = 16; /* ??? */ 56static int min_discovery_slots = 1; 57/* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices 58 * seems to require it. (from Dag's comment) */ 59static int max_slot_timeout = 160; 60static int min_slot_timeout = 20; 61static int max_max_baud_rate = 16000000; /* See qos.c - IrLAP spec */ 62static int min_max_baud_rate = 2400; 63static int max_min_tx_turn_time = 10000; /* See qos.c - IrLAP spec */ 64static int min_min_tx_turn_time; 65static int max_max_tx_data_size = 2048; /* See qos.c - IrLAP spec */ 66static int min_max_tx_data_size = 64; 67static int max_max_tx_window = 7; /* See qos.c - IrLAP spec */ 68static int min_max_tx_window = 1; 69static int max_max_noreply_time = 40; /* See qos.c - IrLAP spec */ 70static int min_max_noreply_time = 3; 71static int max_warn_noreply_time = 3; /* 3s == standard */ 72static int min_warn_noreply_time = 1; /* 1s == min WD_TIMER */ 73static int max_lap_keepalive_time = 10000; /* 10s */ 74static int min_lap_keepalive_time = 100; /* 100us */ 75/* For other sysctl, I've no idea of the range. Maybe Dag could help 76 * us on that - Jean II */ 77 78static int do_devname(ctl_table *table, int write, struct file *filp, 79 void __user *buffer, size_t *lenp, loff_t *ppos) 80{ 81 int ret; 82 83 ret = proc_dostring(table, write, filp, buffer, lenp, ppos); 84 if (ret == 0 && write) { 85 struct ias_value *val; 86 87 val = irias_new_string_value(sysctl_devname); 88 if (val) 89 irias_object_change_attribute("Device", "DeviceName", val); 90 } 91 return ret; 92} 93 94/* One file */ 95static ctl_table irda_table[] = { 96 { 97 .ctl_name = DISCOVERY, 98 .procname = "discovery", 99 .data = &sysctl_discovery, 100 .maxlen = sizeof(int), 101 .mode = 0644, 102 .proc_handler = &proc_dointvec 103 }, 104 { 105 .ctl_name = DEVNAME, 106 .procname = "devname", 107 .data = sysctl_devname, 108 .maxlen = 65, 109 .mode = 0644, 110 .proc_handler = &do_devname, 111 .strategy = &sysctl_string 112 }, 113#ifdef CONFIG_IRDA_DEBUG 114 { 115 .ctl_name = DEBUG, 116 .procname = "debug", 117 .data = &irda_debug, 118 .maxlen = sizeof(int), 119 .mode = 0644, 120 .proc_handler = &proc_dointvec 121 }, 122#endif 123#ifdef CONFIG_IRDA_FAST_RR 124 { 125 .ctl_name = FAST_POLL, 126 .procname = "fast_poll_increase", 127 .data = &sysctl_fast_poll_increase, 128 .maxlen = sizeof(int), 129 .mode = 0644, 130 .proc_handler = &proc_dointvec 131 }, 132#endif 133 { 134 .ctl_name = DISCOVERY_SLOTS, 135 .procname = "discovery_slots", 136 .data = &sysctl_discovery_slots, 137 .maxlen = sizeof(int), 138 .mode = 0644, 139 .proc_handler = &proc_dointvec_minmax, 140 .strategy = &sysctl_intvec, 141 .extra1 = &min_discovery_slots, 142 .extra2 = &max_discovery_slots 143 }, 144 { 145 .ctl_name = DISCOVERY_TIMEOUT, 146 .procname = "discovery_timeout", 147 .data = &sysctl_discovery_timeout, 148 .maxlen = sizeof(int), 149 .mode = 0644, 150 .proc_handler = &proc_dointvec 151 }, 152 { 153 .ctl_name = SLOT_TIMEOUT, 154 .procname = "slot_timeout", 155 .data = &sysctl_slot_timeout, 156 .maxlen = sizeof(int), 157 .mode = 0644, 158 .proc_handler = &proc_dointvec_minmax, 159 .strategy = &sysctl_intvec, 160 .extra1 = &min_slot_timeout, 161 .extra2 = &max_slot_timeout 162 }, 163 { 164 .ctl_name = MAX_BAUD_RATE, 165 .procname = "max_baud_rate", 166 .data = &sysctl_max_baud_rate, 167 .maxlen = sizeof(int), 168 .mode = 0644, 169 .proc_handler = &proc_dointvec_minmax, 170 .strategy = &sysctl_intvec, 171 .extra1 = &min_max_baud_rate, 172 .extra2 = &max_max_baud_rate 173 }, 174 { 175 .ctl_name = MIN_TX_TURN_TIME, 176 .procname = "min_tx_turn_time", 177 .data = &sysctl_min_tx_turn_time, 178 .maxlen = sizeof(int), 179 .mode = 0644, 180 .proc_handler = &proc_dointvec_minmax, 181 .strategy = &sysctl_intvec, 182 .extra1 = &min_min_tx_turn_time, 183 .extra2 = &max_min_tx_turn_time 184 }, 185 { 186 .ctl_name = MAX_TX_DATA_SIZE, 187 .procname = "max_tx_data_size", 188 .data = &sysctl_max_tx_data_size, 189 .maxlen = sizeof(int), 190 .mode = 0644, 191 .proc_handler = &proc_dointvec_minmax, 192 .strategy = &sysctl_intvec, 193 .extra1 = &min_max_tx_data_size, 194 .extra2 = &max_max_tx_data_size 195 }, 196 { 197 .ctl_name = MAX_TX_WINDOW, 198 .procname = "max_tx_window", 199 .data = &sysctl_max_tx_window, 200 .maxlen = sizeof(int), 201 .mode = 0644, 202 .proc_handler = &proc_dointvec_minmax, 203 .strategy = &sysctl_intvec, 204 .extra1 = &min_max_tx_window, 205 .extra2 = &max_max_tx_window 206 }, 207 { 208 .ctl_name = MAX_NOREPLY_TIME, 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 .strategy = &sysctl_intvec, 215 .extra1 = &min_max_noreply_time, 216 .extra2 = &max_max_noreply_time 217 }, 218 { 219 .ctl_name = WARN_NOREPLY_TIME, 220 .procname = "warn_noreply_time", 221 .data = &sysctl_warn_noreply_time, 222 .maxlen = sizeof(int), 223 .mode = 0644, 224 .proc_handler = &proc_dointvec_minmax, 225 .strategy = &sysctl_intvec, 226 .extra1 = &min_warn_noreply_time, 227 .extra2 = &max_warn_noreply_time 228 }, 229 { 230 .ctl_name = LAP_KEEPALIVE_TIME, 231 .procname = "lap_keepalive_time", 232 .data = &sysctl_lap_keepalive_time, 233 .maxlen = sizeof(int), 234 .mode = 0644, 235 .proc_handler = &proc_dointvec_minmax, 236 .strategy = &sysctl_intvec, 237 .extra1 = &min_lap_keepalive_time, 238 .extra2 = &max_lap_keepalive_time 239 }, 240 { .ctl_name = 0 } 241}; 242 243/* One directory */ 244static ctl_table irda_net_table[] = { 245 { 246 .ctl_name = NET_IRDA, 247 .procname = "irda", 248 .maxlen = 0, 249 .mode = 0555, 250 .child = irda_table 251 }, 252 { .ctl_name = 0 } 253}; 254 255/* The parent directory */ 256static ctl_table irda_root_table[] = { 257 { 258 .ctl_name = CTL_NET, 259 .procname = "net", 260 .maxlen = 0, 261 .mode = 0555, 262 .child = irda_net_table 263 }, 264 { .ctl_name = 0 } 265}; 266 267static struct ctl_table_header *irda_table_header; 268 269/* 270 * Function irda_sysctl_register (void) 271 * 272 * Register our sysctl interface 273 * 274 */ 275int __init irda_sysctl_register(void) 276{ 277 irda_table_header = register_sysctl_table(irda_root_table); 278 if (!irda_table_header) 279 return -ENOMEM; 280 281 return 0; 282} 283 284/* 285 * Function irda_sysctl_unregister (void) 286 * 287 * Unregister our sysctl interface 288 * 289 */ 290void __exit irda_sysctl_unregister(void) 291{ 292 unregister_sysctl_table(irda_table_header); 293} 294