Viewing file:  sysctl_net_ax25.c (4.98 KB) -rw-r--r--
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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);
}
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