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/* -*- linux-c -*-

 * sysctl_net_ax25.c: sysctl interface to net AX.25 subsystem.

 *

 * Begun April 1, 1996, Mike Shaver.

 * Added /proc/sys/net/ax25 directory entry (empty =) ). [MS]

 */

#include <linux/config.h>

#include <linux/mm.h>

#include <linux/sysctl.h>

#include <net/ax25.h>

static int min_ipdefmode[] = {0},        max_ipdefmode[] = {1};

static int min_axdefmode[] = {0},        max_axdefmode[] = {1};

static int min_backoff[] = {0},          max_backoff[] = {2};

static int min_conmode[] = {0},          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[] = {30 * HZ};

static int min_t2[] = {1},              max_t2[] = {20 * HZ};

static int min_t3[] = {0},               max_t3[] = {3600 * HZ};

static int min_idle[] = {0},             max_idle[] = {65535 * HZ};

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

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

static int min_proto[] = {0},            max_proto[] = {3};

static int min_ds_timeout[] = {0},       max_ds_timeout[] = {65535 * HZ};

static struct ctl_table_header *ax25_table_header;

static ctl_table *ax25_table;

static int ax25_table_size;

static ctl_table ax25_dir_table[] = {

        {NET_AX25, "ax25", NULL, 0, 0555, NULL},

        {0}

};

static ctl_table ax25_root_table[] = {

        {CTL_NET, "net", NULL, 0, 0555, ax25_dir_table},

        {0}

};

static const ctl_table ax25_param_table[] = {

        {NET_AX25_IP_DEFAULT_MODE, "ip_default_mode",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_ipdefmode, &max_ipdefmode},

        {NET_AX25_DEFAULT_MODE, "ax25_default_mode",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_axdefmode, &max_axdefmode},

        {NET_AX25_BACKOFF_TYPE, "backoff_type",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_backoff, &max_backoff},

        {NET_AX25_CONNECT_MODE, "connect_mode",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_conmode, &max_conmode},

        {NET_AX25_STANDARD_WINDOW, "standard_window_size",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_window, &max_window},

        {NET_AX25_EXTENDED_WINDOW, "extended_window_size",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_ewindow, &max_ewindow},

        {NET_AX25_T1_TIMEOUT, "t1_timeout",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_t1, &max_t1},

        {NET_AX25_T2_TIMEOUT, "t2_timeout",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_t2, &max_t2},

        {NET_AX25_T3_TIMEOUT, "t3_timeout",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_t3, &max_t3},

        {NET_AX25_IDLE_TIMEOUT, "idle_timeout",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_idle, &max_idle},

        {NET_AX25_N2, "maximum_retry_count",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_n2, &max_n2},

        {NET_AX25_PACLEN, "maximum_packet_length",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_paclen, &max_paclen},

        {NET_AX25_PROTOCOL, "protocol",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_proto, &max_proto},

        {NET_AX25_DAMA_SLAVE_TIMEOUT, "dama_slave_timeout",

         NULL, sizeof(int), 0644, NULL,

         &proc_dointvec_minmax, &sysctl_intvec, NULL,

         &min_ds_timeout, &max_ds_timeout},

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

};

void ax25_register_sysctl(void)

{

        ax25_dev *ax25_dev;

        int n, k;

        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 = kmalloc(ax25_table_size, GFP_ATOMIC)) == NULL)

                return;

        memset(ax25_table, 0x00, ax25_table_size);

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

                ctl_table *child = kmalloc(sizeof(ax25_param_table), GFP_ATOMIC);

                if (!child) {

                        while (n--)

                                kfree(ax25_table[n].child);

                        kfree(ax25_table);

                        return;

                }

                memcpy(child, ax25_param_table, sizeof(ax25_param_table));

                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++;

        }

        ax25_dir_table[0].child = ax25_table;

        ax25_table_header = register_sysctl_table(ax25_root_table, 1);

}

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);

}