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sysctl_net_ax25.c
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sysctl_net_ax25.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Copyright (C) 1996 Mike Shaver ([email protected])
*/
#include <linux/mm.h>
#include <linux/slab.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 };
#ifdef CONFIG_AX25_DAMA_SLAVE
static int min_ds_timeout[1], max_ds_timeout[] = {65535000};
#endif
static const struct ctl_table ax25_param_table[] = {
{
.procname = "ip_default_mode",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_ipdefmode,
.extra2 = &max_ipdefmode
},
{
.procname = "ax25_default_mode",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_axdefmode,
.extra2 = &max_axdefmode
},
{
.procname = "backoff_type",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_backoff,
.extra2 = &max_backoff
},
{
.procname = "connect_mode",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_conmode,
.extra2 = &max_conmode
},
{
.procname = "standard_window_size",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_window,
.extra2 = &max_window
},
{
.procname = "extended_window_size",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_ewindow,
.extra2 = &max_ewindow
},
{
.procname = "t1_timeout",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_t1,
.extra2 = &max_t1
},
{
.procname = "t2_timeout",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_t2,
.extra2 = &max_t2
},
{
.procname = "t3_timeout",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_t3,
.extra2 = &max_t3
},
{
.procname = "idle_timeout",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_idle,
.extra2 = &max_idle
},
{
.procname = "maximum_retry_count",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_n2,
.extra2 = &max_n2
},
{
.procname = "maximum_packet_length",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_paclen,
.extra2 = &max_paclen
},
{
.procname = "protocol",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_proto,
.extra2 = &max_proto
},
#ifdef CONFIG_AX25_DAMA_SLAVE
{
.procname = "dama_slave_timeout",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &min_ds_timeout,
.extra2 = &max_ds_timeout
},
#endif
};
int ax25_register_dev_sysctl(ax25_dev *ax25_dev)
{
char path[sizeof("net/ax25/") + IFNAMSIZ];
int k;
struct ctl_table *table;
table = kmemdup(ax25_param_table, sizeof(ax25_param_table), GFP_KERNEL);
if (!table)
return -ENOMEM;
BUILD_BUG_ON(ARRAY_SIZE(ax25_param_table) != AX25_MAX_VALUES);
for (k = 0; k < AX25_MAX_VALUES; k++)
table[k].data = &ax25_dev->values[k];
snprintf(path, sizeof(path), "net/ax25/%s", ax25_dev->dev->name);
ax25_dev->sysheader = register_net_sysctl_sz(&init_net, path, table,
ARRAY_SIZE(ax25_param_table));
if (!ax25_dev->sysheader) {
kfree(table);
return -ENOMEM;
}
return 0;
}
void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev)
{
struct ctl_table_header *header = ax25_dev->sysheader;
const struct ctl_table *table;
if (header) {
ax25_dev->sysheader = NULL;
table = header->ctl_table_arg;
unregister_net_sysctl_table(header);
kfree(table);
}
}