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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/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 int  sysctl_min_tx_turn_time;

extern int  sysctl_max_tx_data_size;

extern int  sysctl_max_tx_window;

extern int  sysctl_max_noreply_time;

extern int  sysctl_warn_noreply_time;

extern int  sysctl_lap_keepalive_time;

/* 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(ctl_table *table, int write, struct file *filp,

                      void __user *buffer, size_t *lenp, loff_t *ppos)

{

        int ret;

        ret = proc_dostring(table, write, filp, 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;

}

/* One file */

static ctl_table irda_table[] = {

        {

                .ctl_name       = NET_IRDA_DISCOVERY,

                .procname       = "discovery",

                .data           = &sysctl_discovery,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec

        },

        {

                .ctl_name       = NET_IRDA_DEVNAME,

                .procname       = "devname",

                .data           = sysctl_devname,

                .maxlen         = 65,

                .mode           = 0644,

                .proc_handler   = &do_devname,

                .strategy       = &sysctl_string

        },

#ifdef CONFIG_IRDA_DEBUG

        {

                .ctl_name       = NET_IRDA_DEBUG,

                .procname       = "debug",

                .data           = &irda_debug,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec

        },

#endif

#ifdef CONFIG_IRDA_FAST_RR

        {

                .ctl_name       = NET_IRDA_FAST_POLL,

                .procname       = "fast_poll_increase",

                .data           = &sysctl_fast_poll_increase,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec

        },

#endif

        {

                .ctl_name       = NET_IRDA_DISCOVERY_SLOTS,

                .procname       = "discovery_slots",

                .data           = &sysctl_discovery_slots,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_discovery_slots,

                .extra2         = &max_discovery_slots

        },

        {

                .ctl_name       = NET_IRDA_DISCOVERY_TIMEOUT,

                .procname       = "discovery_timeout",

                .data           = &sysctl_discovery_timeout,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec

        },

        {

                .ctl_name       = NET_IRDA_SLOT_TIMEOUT,

                .procname       = "slot_timeout",

                .data           = &sysctl_slot_timeout,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_slot_timeout,

                .extra2         = &max_slot_timeout

        },

        {

                .ctl_name       = NET_IRDA_MAX_BAUD_RATE,

                .procname       = "max_baud_rate",

                .data           = &sysctl_max_baud_rate,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_max_baud_rate,

                .extra2         = &max_max_baud_rate

        },

        {

                .ctl_name       = NET_IRDA_MIN_TX_TURN_TIME,

                .procname       = "min_tx_turn_time",

                .data           = &sysctl_min_tx_turn_time,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_min_tx_turn_time,

                .extra2         = &max_min_tx_turn_time

        },

        {

                .ctl_name       = NET_IRDA_MAX_TX_DATA_SIZE,

                .procname       = "max_tx_data_size",

                .data           = &sysctl_max_tx_data_size,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_max_tx_data_size,

                .extra2         = &max_max_tx_data_size

        },

        {

                .ctl_name       = NET_IRDA_MAX_TX_WINDOW,

                .procname       = "max_tx_window",

                .data           = &sysctl_max_tx_window,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_max_tx_window,

                .extra2         = &max_max_tx_window

        },

        {

                .ctl_name       = NET_IRDA_MAX_NOREPLY_TIME,

                .procname       = "max_noreply_time",

                .data           = &sysctl_max_noreply_time,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_max_noreply_time,

                .extra2         = &max_max_noreply_time

        },

        {

                .ctl_name       = NET_IRDA_WARN_NOREPLY_TIME,

                .procname       = "warn_noreply_time",

                .data           = &sysctl_warn_noreply_time,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_warn_noreply_time,

                .extra2         = &max_warn_noreply_time

        },

        {

                .ctl_name       = NET_IRDA_LAP_KEEPALIVE_TIME,

                .procname       = "lap_keepalive_time",

                .data           = &sysctl_lap_keepalive_time,

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_lap_keepalive_time,

                .extra2         = &max_lap_keepalive_time

        },

        { .ctl_name = 0 }

};

/* One directory */

static ctl_table irda_net_table[] = {

        {

                .ctl_name       = NET_IRDA,

                .procname       = "irda",

                .maxlen         = 0,

                .mode           = 0555,

                .child          = irda_table

        },

        { .ctl_name = 0 }

};

/* The parent directory */

static ctl_table irda_root_table[] = {

        {

                .ctl_name       = CTL_NET,

                .procname       = "net",

                .maxlen         = 0,

                .mode           = 0555,

                .child          = irda_net_table

        },

        { .ctl_name = 0 }

};

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_sysctl_table(irda_root_table);

        if (!irda_table_header)

                return -ENOMEM;

        return 0;

}

/*

 * Function irda_sysctl_unregister (void)

 *

 *    Unregister our sysctl interface

 *

 */

void irda_sysctl_unregister(void)

{

        unregister_sysctl_table(irda_table_header);

}