[deliverable/linux.git] / net / ax25 / sysctl_net_ax25.c

/*
 * 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 struct ctl_path ax25_path[] = {
	{ .procname = "net", .ctl_name = CTL_NET, },
	{ .procname = "ax25", .ctl_name = NET_AX25, },
	{ }
};
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_table_header = register_sysctl_paths(ax25_path, ax25_table);
}

void ax25_unregister_sysctl(void)
{
	ctl_table *p;
	unregister_sysctl_table(ax25_table_header);

	for (p = ax25_table; p->ctl_name; p++)
		kfree(p->child);
	kfree(ax25_table);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License as published by
	4	* the Free Software Foundation; either version 2 of the License, or
	5	* (at your option) any later version.
	6	*
	7	* Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
	8	*/
1da177e4 LT	9	#include <linux/mm.h>
	10	#include <linux/sysctl.h>
	11	#include <linux/spinlock.h>
	12	#include <net/ax25.h>
	13
	14	static int min_ipdefmode[1], max_ipdefmode[] = {1};
	15	static int min_axdefmode[1], max_axdefmode[] = {1};
	16	static int min_backoff[1], max_backoff[] = {2};
	17	static int min_conmode[1], max_conmode[] = {2};
	18	static int min_window[] = {1}, max_window[] = {7};
	19	static int min_ewindow[] = {1}, max_ewindow[] = {63};
e1fdb5b3 RB	20	static int min_t1[] = {1}, max_t1[] = {30000};
	21	static int min_t2[] = {1}, max_t2[] = {20000};
	22	static int min_t3[1], max_t3[] = {3600000};
	23	static int min_idle[1], max_idle[] = {65535000};
1da177e4 LT	24	static int min_n2[] = {1}, max_n2[] = {31};
1da177e4 LT	25	static int min_paclen[] = {1}, max_paclen[] = {512};
c7c694d1	26	static int min_proto[1], max_proto[] = { AX25_PROTO_MAX };
e1fdb5b3	27	static int min_ds_timeout[1], max_ds_timeout[] = {65535000};
1da177e4 LT	28
	29	static struct ctl_table_header *ax25_table_header;
	30
	31	static ctl_table *ax25_table;
	32	static int ax25_table_size;
	33
c6995bdf PE	34	static struct ctl_path ax25_path[] = {
	35	{ .procname = "net", .ctl_name = CTL_NET, },
	36	{ .procname = "ax25", .ctl_name = NET_AX25, },
	37	{ }
1da177e4	38	};
1da177e4 LT	39	static const ctl_table ax25_param_table[] = {
	40	{
	41	.ctl_name = NET_AX25_IP_DEFAULT_MODE,
	42	.procname = "ip_default_mode",
	43	.maxlen = sizeof(int),
	44	.mode = 0644,
	45	.proc_handler = &proc_dointvec_minmax,
	46	.strategy = &sysctl_intvec,
	47	.extra1 = &min_ipdefmode,
	48	.extra2 = &max_ipdefmode
	49	},
	50	{
	51	.ctl_name = NET_AX25_DEFAULT_MODE,
	52	.procname = "ax25_default_mode",
	53	.maxlen = sizeof(int),
	54	.mode = 0644,
	55	.proc_handler = &proc_dointvec_minmax,
	56	.strategy = &sysctl_intvec,
	57	.extra1 = &min_axdefmode,
	58	.extra2 = &max_axdefmode
	59	},
	60	{
	61	.ctl_name = NET_AX25_BACKOFF_TYPE,
	62	.procname = "backoff_type",
	63	.maxlen = sizeof(int),
	64	.mode = 0644,
	65	.proc_handler = &proc_dointvec_minmax,
	66	.strategy = &sysctl_intvec,
	67	.extra1 = &min_backoff,
	68	.extra2 = &max_backoff
	69	},
	70	{
	71	.ctl_name = NET_AX25_CONNECT_MODE,
	72	.procname = "connect_mode",
	73	.maxlen = sizeof(int),
	74	.mode = 0644,
	75	.proc_handler = &proc_dointvec_minmax,
	76	.strategy = &sysctl_intvec,
	77	.extra1 = &min_conmode,
	78	.extra2 = &max_conmode
	79	},
	80	{
	81	.ctl_name = NET_AX25_STANDARD_WINDOW,
	82	.procname = "standard_window_size",
	83	.maxlen = sizeof(int),
	84	.mode = 0644,
	85	.proc_handler = &proc_dointvec_minmax,
	86	.strategy = &sysctl_intvec,
	87	.extra1 = &min_window,
	88	.extra2 = &max_window
	89	},
	90	{
	91	.ctl_name = NET_AX25_EXTENDED_WINDOW,
	92	.procname = "extended_window_size",
	93	.maxlen = sizeof(int),
	94	.mode = 0644,
	95	.proc_handler = &proc_dointvec_minmax,
	96	.strategy = &sysctl_intvec,
	97	.extra1 = &min_ewindow,
	98	.extra2 = &max_ewindow
	99	},
	100	{
	101	.ctl_name = NET_AX25_T1_TIMEOUT,
	102	.procname = "t1_timeout",
103	.maxlen = sizeof(int),
104	.mode = 0644,
105	.proc_handler = &proc_dointvec_minmax,
106	.strategy = &sysctl_intvec,
107	.extra1 = &min_t1,
108	.extra2 = &max_t1
109	},
110	{
111	.ctl_name = NET_AX25_T2_TIMEOUT,
112	.procname = "t2_timeout",
113	.maxlen = sizeof(int),
114	.mode = 0644,
115	.proc_handler = &proc_dointvec_minmax,
116	.strategy = &sysctl_intvec,
117	.extra1 = &min_t2,
118	.extra2 = &max_t2
119	},
120	{
121	.ctl_name = NET_AX25_T3_TIMEOUT,
122	.procname = "t3_timeout",
123	.maxlen = sizeof(int),
124	.mode = 0644,
125	.proc_handler = &proc_dointvec_minmax,
126	.strategy = &sysctl_intvec,
127	.extra1 = &min_t3,
128	.extra2 = &max_t3
129	},
130	{
131	.ctl_name = NET_AX25_IDLE_TIMEOUT,
132	.procname = "idle_timeout",
133	.maxlen = sizeof(int),
134	.mode = 0644,
135	.proc_handler = &proc_dointvec_minmax,
136	.strategy = &sysctl_intvec,
137	.extra1 = &min_idle,
138	.extra2 = &max_idle
139	},
140	{
141	.ctl_name = NET_AX25_N2,
142	.procname = "maximum_retry_count",
143	.maxlen = sizeof(int),
144	.mode = 0644,
145	.proc_handler = &proc_dointvec_minmax,
146	.strategy = &sysctl_intvec,
147	.extra1 = &min_n2,
148	.extra2 = &max_n2
149	},
150	{
151	.ctl_name = NET_AX25_PACLEN,
152	.procname = "maximum_packet_length",
153	.maxlen = sizeof(int),
154	.mode = 0644,
155	.proc_handler = &proc_dointvec_minmax,
156	.strategy = &sysctl_intvec,
157	.extra1 = &min_paclen,
158	.extra2 = &max_paclen
159	},
160	{
161	.ctl_name = NET_AX25_PROTOCOL,
162	.procname = "protocol",
163	.maxlen = sizeof(int),
164	.mode = 0644,
165	.proc_handler = &proc_dointvec_minmax,
166	.strategy = &sysctl_intvec,
167	.extra1 = &min_proto,
168	.extra2 = &max_proto
169	},
170	{
171	.ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT,
172	.procname = "dama_slave_timeout",
173	.maxlen = sizeof(int),
174	.mode = 0644,
175	.proc_handler = &proc_dointvec_minmax,
176	.strategy = &sysctl_intvec,
177	.extra1 = &min_ds_timeout,
178	.extra2 = &max_ds_timeout
179	},
180	{ .ctl_name = 0 } /* that's all, folks! */
181	};
182
183	void ax25_register_sysctl(void)
184	{
185	ax25_dev *ax25_dev;
186	int n, k;
187
188	spin_lock_bh(&ax25_dev_lock);
189	for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
190	ax25_table_size += sizeof(ctl_table);
191
0da974f4	192	if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {
1da177e4 LT	193	spin_unlock_bh(&ax25_dev_lock);
	194	return;
	195	}
	196
1da177e4	197	for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {
0459d70a ACM	198	struct ctl_table *child = kmemdup(ax25_param_table,
	199	sizeof(ax25_param_table),
	200	GFP_ATOMIC);
1da177e4 LT	201	if (!child) {
	202	while (n--)
	203	kfree(ax25_table[n].child);
	204	kfree(ax25_table);
	205	spin_unlock_bh(&ax25_dev_lock);
	206	return;
	207	}
1da177e4 LT	208	ax25_table[n].child = ax25_dev->systable = child;
	209	ax25_table[n].ctl_name = n + 1;
	210	ax25_table[n].procname = ax25_dev->dev->name;
	211	ax25_table[n].mode = 0555;
	212
	213	#ifndef CONFIG_AX25_DAMA_SLAVE
	214	/*
	215	* We do not wish to have a representation of this parameter
	216	* in /proc/sys/ when configured not to include the
	217	* AX.25 DAMA slave code, do we?
	218	*/
	219
	220	child[AX25_VALUES_DS_TIMEOUT].procname = NULL;
	221	#endif
	222
	223	child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */
	224
	225	for (k = 0; k < AX25_MAX_VALUES; k++)
	226	child[k].data = &ax25_dev->values[k];
	227
	228	n++;
	229	}
	230	spin_unlock_bh(&ax25_dev_lock);
	231
c6995bdf	232	ax25_table_header = register_sysctl_paths(ax25_path, ax25_table);
1da177e4 LT	233	}
	234
	235	void ax25_unregister_sysctl(void)
	236	{
	237	ctl_table *p;
	238	unregister_sysctl_table(ax25_table_header);
	239
1da177e4 LT	240	for (p = ax25_table; p->ctl_name; p++)
	241	kfree(p->child);
	242	kfree(ax25_table);
	243	}