Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * 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.

 *

 * Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)

 */

#include <linux/mm.h>

#include <linux/sysctl.h>

#include <linux/spinlock.h>

#include <net/ax25.h>

static int min_ipdefmode[1],            max_ipdefmode[] = {1};

static int min_axdefmode[1],            max_axdefmode[] = {1};

static int min_backoff[1],              max_backoff[] = {2};

static int min_conmode[1],              max_conmode[] = {2};

static int min_window[] = {1},          max_window[] = {7};

static int min_ewindow[] = {1},         max_ewindow[] = {63};

static int min_t1[] = {1},              max_t1[] = {30000};

static int min_t2[] = {1},              max_t2[] = {20000};

static int min_t3[1],                   max_t3[] = {3600000};

static int min_idle[1],                 max_idle[] = {65535000};

static int min_n2[] = {1},              max_n2[] = {31};

static int min_paclen[] = {1},          max_paclen[] = {512};

static int min_proto[1],                max_proto[] = { AX25_PROTO_MAX };

static int min_ds_timeout[1],           max_ds_timeout[] = {65535000};

static struct ctl_table_header *ax25_table_header;

static ctl_table *ax25_table;

static int ax25_table_size;

static ctl_table ax25_dir_table[] = {

        {

                .ctl_name       = NET_AX25,

                .procname       = "ax25",

                .mode           = 0555,

        },

        { .ctl_name = 0 }

};

static ctl_table ax25_root_table[] = {

        {

                .ctl_name       = CTL_NET,

                .procname       = "net",

                .mode           = 0555,

                .child          = ax25_dir_table

        },

        { .ctl_name = 0 }

};

static const ctl_table ax25_param_table[] = {

        {

                .ctl_name       = NET_AX25_IP_DEFAULT_MODE,

                .procname       = "ip_default_mode",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_ipdefmode,

                .extra2         = &max_ipdefmode

        },

        {

                .ctl_name       = NET_AX25_DEFAULT_MODE,

                .procname       = "ax25_default_mode",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_axdefmode,

                .extra2         = &max_axdefmode

        },

        {

                .ctl_name       = NET_AX25_BACKOFF_TYPE,

                .procname       = "backoff_type",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_backoff,

                .extra2         = &max_backoff

        },

        {

                .ctl_name       = NET_AX25_CONNECT_MODE,

                .procname       = "connect_mode",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_conmode,

                .extra2         = &max_conmode

        },

        {

                .ctl_name       = NET_AX25_STANDARD_WINDOW,

                .procname       = "standard_window_size",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_window,

                .extra2         = &max_window

        },

        {

                .ctl_name       = NET_AX25_EXTENDED_WINDOW,

                .procname       = "extended_window_size",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_ewindow,

                .extra2         = &max_ewindow

        },

        {

                .ctl_name       = NET_AX25_T1_TIMEOUT,

                .procname       = "t1_timeout",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_t1,

                .extra2         = &max_t1

        },

        {

                .ctl_name       = NET_AX25_T2_TIMEOUT,

                .procname       = "t2_timeout",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_t2,

                .extra2         = &max_t2

        },

        {

                .ctl_name       = NET_AX25_T3_TIMEOUT,

                .procname       = "t3_timeout",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_t3,

                .extra2         = &max_t3

        },

        {

                .ctl_name       = NET_AX25_IDLE_TIMEOUT,

                .procname       = "idle_timeout",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_idle,

                .extra2         = &max_idle

        },

        {

                .ctl_name       = NET_AX25_N2,

                .procname       = "maximum_retry_count",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_n2,

                .extra2         = &max_n2

        },

        {

                .ctl_name       = NET_AX25_PACLEN,

                .procname       = "maximum_packet_length",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_paclen,

                .extra2         = &max_paclen

        },

        {

                .ctl_name       = NET_AX25_PROTOCOL,

                .procname       = "protocol",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_proto,

                .extra2         = &max_proto

        },

        {

                .ctl_name       = NET_AX25_DAMA_SLAVE_TIMEOUT,

                .procname       = "dama_slave_timeout",

                .maxlen         = sizeof(int),

                .mode           = 0644,

                .proc_handler   = &proc_dointvec_minmax,

                .strategy       = &sysctl_intvec,

                .extra1         = &min_ds_timeout,

                .extra2         = &max_ds_timeout

        },

        { .ctl_name = 0 }        /* that's all, folks! */

};

void ax25_register_sysctl(void)

{

        ax25_dev *ax25_dev;

        int n, k;

        spin_lock_bh(&ax25_dev_lock);

        for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)

                ax25_table_size += sizeof(ctl_table);

        if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {

                spin_unlock_bh(&ax25_dev_lock);

                return;

        }

        for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {

                struct ctl_table *child = kmemdup(ax25_param_table,

                                                  sizeof(ax25_param_table),

                                                  GFP_ATOMIC);

                if (!child) {

                        while (n--)

                                kfree(ax25_table[n].child);

                        kfree(ax25_table);

                        spin_unlock_bh(&ax25_dev_lock);

                        return;

                }

                ax25_table[n].child = ax25_dev->systable = child;

                ax25_table[n].ctl_name     = n + 1;

                ax25_table[n].procname     = ax25_dev->dev->name;

                ax25_table[n].mode         = 0555;

#ifndef CONFIG_AX25_DAMA_SLAVE

                /*

                 * We do not wish to have a representation of this parameter

                 * in /proc/sys/ when configured *not* to include the

                 * AX.25 DAMA slave code, do we?

                 */

                child[AX25_VALUES_DS_TIMEOUT].procname = NULL;

#endif

                child[AX25_MAX_VALUES].ctl_name = 0;     /* just in case... */

                for (k = 0; k < AX25_MAX_VALUES; k++)

                        child[k].data = &ax25_dev->values[k];

                n++;

        }

        spin_unlock_bh(&ax25_dev_lock);

        ax25_dir_table[0].child = ax25_table;

        ax25_table_header = register_sysctl_table(ax25_root_table);

}

void ax25_unregister_sysctl(void)

{

        ctl_table *p;

        unregister_sysctl_table(ax25_table_header);

        ax25_dir_table[0].child = NULL;

        for (p = ax25_table; p->ctl_name; p++)

                kfree(p->child);

        kfree(ax25_table);

}