[linux-2.6-block.git] / net / irda / irsysctl.c

/*********************************************************************
 *
 * 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);
}
Commit	Line	Data
1da177e4	1	/*********************************************************************
6819bc2e	2	*
1da177e4 LT	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>
6819bc2e	11	*
1da177e4 LT	12	* Copyright (c) 1997, 1999 Dag Brattli, All Rights Reserved.
1da177e4 LT	13	* Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
6819bc2e YH	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
1da177e4	18	* the License, or (at your option) any later version.
6819bc2e	19	*
96de0e25	20	* Neither Dag Brattli nor University of Tromsø admit liability nor
6819bc2e	21	* provide warranty for any of this software. This material is
1da177e4	22	* provided "AS-IS" and at no charge.
6819bc2e	23	*
1da177e4 LT	24	********************************************************************/
1da177e4 LT	25
1da177e4 LT	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 */
91cde6f7 RB	32	#include <net/irda/irlmp.h>
91cde6f7 RB	33	#include <net/irda/timer.h>
1da177e4 LT	34	#include <net/irda/irias_object.h>
1da177e4 LT	35
1da177e4 LT	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;
9566042e AK	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;
1da177e4 LT	46	extern int sysctl_max_noreply_time;
	47	extern int sysctl_warn_noreply_time;
	48	extern int sysctl_lap_keepalive_time;
	49
91cde6f7 RB	50	extern struct irlmp_cb *irlmp;
91cde6f7 RB	51
1da177e4 LT	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
fe2c6338	76	static int do_devname(struct ctl_table *table, int write,
1da177e4 LT	77	void __user buffer, size_t lenp, loff_t *ppos)
	78	{
	79	int ret;
	80
8d65af78	81	ret = proc_dostring(table, write, buffer, lenp, ppos);
1da177e4 LT	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
91cde6f7	92
fe2c6338	93	static int do_discovery(struct ctl_table *table, int write,
91cde6f7 RB	94	void __user buffer, size_t lenp, loff_t *ppos)
	95	{
	96	int ret;
	97
8d65af78	98	ret = proc_dointvec(table, write, buffer, lenp, ppos);
91cde6f7 RB	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
1da177e4	113	/* One file */
fe2c6338	114	static struct ctl_table irda_table[] = {
1da177e4	115	{
1da177e4 LT	116	.procname = "discovery",
	117	.data = &sysctl_discovery,
	118	.maxlen = sizeof(int),
	119	.mode = 0644,
6d9f239a	120	.proc_handler = do_discovery,
1da177e4 LT	121	},
1da177e4 LT	122	{
1da177e4 LT	123	.procname = "devname",
	124	.data = sysctl_devname,
	125	.maxlen = 65,
	126	.mode = 0644,
6d9f239a	127	.proc_handler = do_devname,
1da177e4	128	},
1da177e4	129	#ifdef CONFIG_IRDA_FAST_RR
6819bc2e	130	{
1da177e4 LT	131	.procname = "fast_poll_increase",
	132	.data = &sysctl_fast_poll_increase,
	133	.maxlen = sizeof(int),
	134	.mode = 0644,
6d9f239a	135	.proc_handler = proc_dointvec
1da177e4 LT	136	},
	137	#endif
	138	{
1da177e4 LT	139	.procname = "discovery_slots",
	140	.data = &sysctl_discovery_slots,
	141	.maxlen = sizeof(int),
	142	.mode = 0644,
6d9f239a	143	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	144	.extra1 = &min_discovery_slots,
	145	.extra2 = &max_discovery_slots
	146	},
	147	{
1da177e4 LT	148	.procname = "discovery_timeout",
	149	.data = &sysctl_discovery_timeout,
	150	.maxlen = sizeof(int),
	151	.mode = 0644,
6d9f239a	152	.proc_handler = proc_dointvec
1da177e4 LT	153	},
1da177e4 LT	154	{
1da177e4 LT	155	.procname = "slot_timeout",
	156	.data = &sysctl_slot_timeout,
	157	.maxlen = sizeof(int),
	158	.mode = 0644,
6d9f239a	159	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	160	.extra1 = &min_slot_timeout,
	161	.extra2 = &max_slot_timeout
	162	},
	163	{
1da177e4 LT	164	.procname = "max_baud_rate",
	165	.data = &sysctl_max_baud_rate,
	166	.maxlen = sizeof(int),
	167	.mode = 0644,
6d9f239a	168	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	169	.extra1 = &min_max_baud_rate,
	170	.extra2 = &max_max_baud_rate
	171	},
	172	{
1da177e4 LT	173	.procname = "min_tx_turn_time",
	174	.data = &sysctl_min_tx_turn_time,
	175	.maxlen = sizeof(int),
	176	.mode = 0644,
6d9f239a	177	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	178	.extra1 = &min_min_tx_turn_time,
	179	.extra2 = &max_min_tx_turn_time
	180	},
	181	{
1da177e4 LT	182	.procname = "max_tx_data_size",
	183	.data = &sysctl_max_tx_data_size,
	184	.maxlen = sizeof(int),
	185	.mode = 0644,
6d9f239a	186	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	187	.extra1 = &min_max_tx_data_size,
	188	.extra2 = &max_max_tx_data_size
	189	},
	190	{
1da177e4 LT	191	.procname = "max_tx_window",
	192	.data = &sysctl_max_tx_window,
	193	.maxlen = sizeof(int),
	194	.mode = 0644,
6d9f239a	195	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	196	.extra1 = &min_max_tx_window,
	197	.extra2 = &max_max_tx_window
	198	},
	199	{
1da177e4 LT	200	.procname = "max_noreply_time",
	201	.data = &sysctl_max_noreply_time,
	202	.maxlen = sizeof(int),
	203	.mode = 0644,
6d9f239a	204	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	205	.extra1 = &min_max_noreply_time,
	206	.extra2 = &max_max_noreply_time
	207	},
	208	{
1da177e4 LT	209	.procname = "warn_noreply_time",
	210	.data = &sysctl_warn_noreply_time,
	211	.maxlen = sizeof(int),
	212	.mode = 0644,
6d9f239a	213	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	214	.extra1 = &min_warn_noreply_time,
	215	.extra2 = &max_warn_noreply_time
	216	},
	217	{
1da177e4 LT	218	.procname = "lap_keepalive_time",
	219	.data = &sysctl_lap_keepalive_time,
	220	.maxlen = sizeof(int),
	221	.mode = 0644,
6d9f239a	222	.proc_handler = proc_dointvec_minmax,
1da177e4 LT	223	.extra1 = &min_lap_keepalive_time,
	224	.extra2 = &max_lap_keepalive_time
	225	},
f8572d8f	226	{ }
1da177e4 LT	227	};
1da177e4 LT	228
1da177e4 LT	229	static struct ctl_table_header *irda_table_header;
	230
	231	/*
	232	* Function irda_sysctl_register (void)
	233	*
	234	* Register our sysctl interface
	235	*
	236	*/
	237	int __init irda_sysctl_register(void)
	238	{
ec8f23ce	239	irda_table_header = register_net_sysctl(&init_net, "net/irda", irda_table);
1da177e4 LT	240	if (!irda_table_header)
	241	return -ENOMEM;
	242
	243	return 0;
	244	}
	245
	246	/*
	247	* Function irda_sysctl_unregister (void)
	248	*
	249	* Unregister our sysctl interface
	250	*
	251	*/
75a69ac6	252	void irda_sysctl_unregister(void)
1da177e4	253	{
5dd3df10	254	unregister_net_sysctl_table(irda_table_header);
1da177e4 LT	255	}
	256
	257
	258