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irsysctl.c
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irsysctl.c
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/*********************************************************************
*
* Filename: irsysctl.c
* Version: 1.0
* Description: Sysctl interface for IrDA
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Sun May 24 22:12:06 1998
* Modified at: Fri Jun 4 02:50:15 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
* Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* Neither Dag Brattli nor University of Tromsø admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charge.
*
********************************************************************/
#include <linux/mm.h>
#include <linux/ctype.h>
#include <linux/sysctl.h>
#include <linux/init.h>
#include <net/irda/irda.h> /* irda_debug */
#include <net/irda/irlmp.h>
#include <net/irda/timer.h>
#include <net/irda/irias_object.h>
extern int sysctl_discovery;
extern int sysctl_discovery_slots;
extern int sysctl_discovery_timeout;
extern int sysctl_slot_timeout;
extern int sysctl_fast_poll_increase;
extern char sysctl_devname[];
extern int sysctl_max_baud_rate;
extern unsigned int sysctl_min_tx_turn_time;
extern unsigned int sysctl_max_tx_data_size;
extern unsigned int sysctl_max_tx_window;
extern int sysctl_max_noreply_time;
extern int sysctl_warn_noreply_time;
extern int sysctl_lap_keepalive_time;
extern struct irlmp_cb *irlmp;
/* this is needed for the proc_dointvec_minmax - Jean II */
static int max_discovery_slots = 16; /* ??? */
static int min_discovery_slots = 1;
/* IrLAP 6.13.2 says 25ms to 10+70ms - allow higher since some devices
* seems to require it. (from Dag's comment) */
static int max_slot_timeout = 160;
static int min_slot_timeout = 20;
static int max_max_baud_rate = 16000000; /* See qos.c - IrLAP spec */
static int min_max_baud_rate = 2400;
static int max_min_tx_turn_time = 10000; /* See qos.c - IrLAP spec */
static int min_min_tx_turn_time;
static int max_max_tx_data_size = 2048; /* See qos.c - IrLAP spec */
static int min_max_tx_data_size = 64;
static int max_max_tx_window = 7; /* See qos.c - IrLAP spec */
static int min_max_tx_window = 1;
static int max_max_noreply_time = 40; /* See qos.c - IrLAP spec */
static int min_max_noreply_time = 3;
static int max_warn_noreply_time = 3; /* 3s == standard */
static int min_warn_noreply_time = 1; /* 1s == min WD_TIMER */
static int max_lap_keepalive_time = 10000; /* 10s */
static int min_lap_keepalive_time = 100; /* 100us */
/* For other sysctl, I've no idea of the range. Maybe Dag could help
* us on that - Jean II */
static int do_devname(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
ret = proc_dostring(table, write, buffer, lenp, ppos);
if (ret == 0 && write) {
struct ias_value *val;
val = irias_new_string_value(sysctl_devname);
if (val)
irias_object_change_attribute("Device", "DeviceName", val);
}
return ret;
}
static int do_discovery(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
ret = proc_dointvec(table, write, buffer, lenp, ppos);
if (ret)
return ret;
if (irlmp == NULL)
return -ENODEV;
if (sysctl_discovery)
irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout*HZ);
else
del_timer_sync(&irlmp->discovery_timer);
return ret;
}
/* One file */
static struct ctl_table irda_table[] = {
{
.procname = "discovery",
.data = &sysctl_discovery,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = do_discovery,
},
{
.procname = "devname",
.data = sysctl_devname,
.maxlen = 65,
.mode = 0644,
.proc_handler = do_devname,
},
#ifdef CONFIG_IRDA_FAST_RR
{
.procname = "fast_poll_increase",
.data = &sysctl_fast_poll_increase,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
#endif
{
.procname = "discovery_slots",
.data = &sysctl_discovery_slots,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_discovery_slots,
.extra2 = &max_discovery_slots
},
{
.procname = "discovery_timeout",
.data = &sysctl_discovery_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "slot_timeout",
.data = &sysctl_slot_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_slot_timeout,
.extra2 = &max_slot_timeout
},
{
.procname = "max_baud_rate",
.data = &sysctl_max_baud_rate,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_baud_rate,
.extra2 = &max_max_baud_rate
},
{
.procname = "min_tx_turn_time",
.data = &sysctl_min_tx_turn_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_min_tx_turn_time,
.extra2 = &max_min_tx_turn_time
},
{
.procname = "max_tx_data_size",
.data = &sysctl_max_tx_data_size,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_tx_data_size,
.extra2 = &max_max_tx_data_size
},
{
.procname = "max_tx_window",
.data = &sysctl_max_tx_window,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_tx_window,
.extra2 = &max_max_tx_window
},
{
.procname = "max_noreply_time",
.data = &sysctl_max_noreply_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_max_noreply_time,
.extra2 = &max_max_noreply_time
},
{
.procname = "warn_noreply_time",
.data = &sysctl_warn_noreply_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_warn_noreply_time,
.extra2 = &max_warn_noreply_time
},
{
.procname = "lap_keepalive_time",
.data = &sysctl_lap_keepalive_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_lap_keepalive_time,
.extra2 = &max_lap_keepalive_time
},
{ }
};
static struct ctl_table_header *irda_table_header;
/*
* Function irda_sysctl_register (void)
*
* Register our sysctl interface
*
*/
int __init irda_sysctl_register(void)
{
irda_table_header = register_net_sysctl(&init_net, "net/irda", irda_table);
if (!irda_table_header)
return -ENOMEM;
return 0;
}
/*
* Function irda_sysctl_unregister (void)
*
* Unregister our sysctl interface
*
*/
void irda_sysctl_unregister(void)
{
unregister_net_sysctl_table(irda_table_header);
}