[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 ([email protected])
 */
#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);
}
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 ([email protected])
	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
	34	static ctl_table ax25_dir_table[] = {
	35	{
	36	.ctl_name = NET_AX25,
	37	.procname = "ax25",
	38	.mode = 0555,
	39	},
	40	{ .ctl_name = 0 }
	41	};
	42
	43	static ctl_table ax25_root_table[] = {
	44	{
	45	.ctl_name = CTL_NET,
	46	.procname = "net",
	47	.mode = 0555,
	48	.child = ax25_dir_table
	49	},
	50	{ .ctl_name = 0 }
	51	};
	52
	53	static const ctl_table ax25_param_table[] = {
	54	{
	55	.ctl_name = NET_AX25_IP_DEFAULT_MODE,
	56	.procname = "ip_default_mode",
	57	.maxlen = sizeof(int),
	58	.mode = 0644,
	59	.proc_handler = &proc_dointvec_minmax,
	60	.strategy = &sysctl_intvec,
	61	.extra1 = &min_ipdefmode,
	62	.extra2 = &max_ipdefmode
	63	},
	64	{
	65	.ctl_name = NET_AX25_DEFAULT_MODE,
	66	.procname = "ax25_default_mode",
	67	.maxlen = sizeof(int),
	68	.mode = 0644,
	69	.proc_handler = &proc_dointvec_minmax,
	70	.strategy = &sysctl_intvec,
	71	.extra1 = &min_axdefmode,
	72	.extra2 = &max_axdefmode
	73	},
	74	{
	75	.ctl_name = NET_AX25_BACKOFF_TYPE,
	76	.procname = "backoff_type",
	77	.maxlen = sizeof(int),
	78	.mode = 0644,
	79	.proc_handler = &proc_dointvec_minmax,
	80	.strategy = &sysctl_intvec,
	81	.extra1 = &min_backoff,
	82	.extra2 = &max_backoff
	83	},
	84	{
	85	.ctl_name = NET_AX25_CONNECT_MODE,
	86	.procname = "connect_mode",
	87	.maxlen = sizeof(int),
	88	.mode = 0644,
	89	.proc_handler = &proc_dointvec_minmax,
	90	.strategy = &sysctl_intvec,
	91	.extra1 = &min_conmode,
92	.extra2 = &max_conmode
93	},
94	{
95	.ctl_name = NET_AX25_STANDARD_WINDOW,
96	.procname = "standard_window_size",
97	.maxlen = sizeof(int),
98	.mode = 0644,
99	.proc_handler = &proc_dointvec_minmax,
100	.strategy = &sysctl_intvec,
101	.extra1 = &min_window,
102	.extra2 = &max_window
103	},
104	{
105	.ctl_name = NET_AX25_EXTENDED_WINDOW,
106	.procname = "extended_window_size",
107	.maxlen = sizeof(int),
108	.mode = 0644,
109	.proc_handler = &proc_dointvec_minmax,
110	.strategy = &sysctl_intvec,
111	.extra1 = &min_ewindow,
112	.extra2 = &max_ewindow
113	},
114	{
115	.ctl_name = NET_AX25_T1_TIMEOUT,
116	.procname = "t1_timeout",
117	.maxlen = sizeof(int),
118	.mode = 0644,
119	.proc_handler = &proc_dointvec_minmax,
120	.strategy = &sysctl_intvec,
121	.extra1 = &min_t1,
122	.extra2 = &max_t1
123	},
124	{
125	.ctl_name = NET_AX25_T2_TIMEOUT,
126	.procname = "t2_timeout",
127	.maxlen = sizeof(int),
128	.mode = 0644,
129	.proc_handler = &proc_dointvec_minmax,
130	.strategy = &sysctl_intvec,
131	.extra1 = &min_t2,
132	.extra2 = &max_t2
133	},
134	{
135	.ctl_name = NET_AX25_T3_TIMEOUT,
136	.procname = "t3_timeout",
137	.maxlen = sizeof(int),
138	.mode = 0644,
139	.proc_handler = &proc_dointvec_minmax,
140	.strategy = &sysctl_intvec,
141	.extra1 = &min_t3,
142	.extra2 = &max_t3
143	},
144	{
145	.ctl_name = NET_AX25_IDLE_TIMEOUT,
146	.procname = "idle_timeout",
147	.maxlen = sizeof(int),
148	.mode = 0644,
149	.proc_handler = &proc_dointvec_minmax,
150	.strategy = &sysctl_intvec,
151	.extra1 = &min_idle,
152	.extra2 = &max_idle
153	},
154	{
155	.ctl_name = NET_AX25_N2,
156	.procname = "maximum_retry_count",
157	.maxlen = sizeof(int),
158	.mode = 0644,
159	.proc_handler = &proc_dointvec_minmax,
160	.strategy = &sysctl_intvec,
161	.extra1 = &min_n2,
162	.extra2 = &max_n2
163	},
164	{
165	.ctl_name = NET_AX25_PACLEN,
166	.procname = "maximum_packet_length",
167	.maxlen = sizeof(int),
168	.mode = 0644,
169	.proc_handler = &proc_dointvec_minmax,
170	.strategy = &sysctl_intvec,
171	.extra1 = &min_paclen,
172	.extra2 = &max_paclen
173	},
174	{
175	.ctl_name = NET_AX25_PROTOCOL,
176	.procname = "protocol",
177	.maxlen = sizeof(int),
178	.mode = 0644,
179	.proc_handler = &proc_dointvec_minmax,
180	.strategy = &sysctl_intvec,
181	.extra1 = &min_proto,
182	.extra2 = &max_proto
183	},
184	{
185	.ctl_name = NET_AX25_DAMA_SLAVE_TIMEOUT,
186	.procname = "dama_slave_timeout",
187	.maxlen = sizeof(int),
188	.mode = 0644,
189	.proc_handler = &proc_dointvec_minmax,
190	.strategy = &sysctl_intvec,
191	.extra1 = &min_ds_timeout,
192	.extra2 = &max_ds_timeout
193	},
194	{ .ctl_name = 0 } /* that's all, folks! */
195	};
196
197	void ax25_register_sysctl(void)
198	{
199	ax25_dev *ax25_dev;
200	int n, k;
201
202	spin_lock_bh(&ax25_dev_lock);
203	for (ax25_table_size = sizeof(ctl_table), ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next)
204	ax25_table_size += sizeof(ctl_table);
205
0da974f4	206	if ((ax25_table = kzalloc(ax25_table_size, GFP_ATOMIC)) == NULL) {
1da177e4 LT	207	spin_unlock_bh(&ax25_dev_lock);
	208	return;
	209	}
	210
1da177e4	211	for (n = 0, ax25_dev = ax25_dev_list; ax25_dev != NULL; ax25_dev = ax25_dev->next) {
0459d70a ACM	212	struct ctl_table *child = kmemdup(ax25_param_table,
	213	sizeof(ax25_param_table),
	214	GFP_ATOMIC);
1da177e4 LT	215	if (!child) {
	216	while (n--)
	217	kfree(ax25_table[n].child);
	218	kfree(ax25_table);
	219	spin_unlock_bh(&ax25_dev_lock);
	220	return;
	221	}
1da177e4 LT	222	ax25_table[n].child = ax25_dev->systable = child;
	223	ax25_table[n].ctl_name = n + 1;
	224	ax25_table[n].procname = ax25_dev->dev->name;
	225	ax25_table[n].mode = 0555;
	226
	227	#ifndef CONFIG_AX25_DAMA_SLAVE
	228	/*
	229	* We do not wish to have a representation of this parameter
	230	* in /proc/sys/ when configured not to include the
	231	* AX.25 DAMA slave code, do we?
	232	*/
	233
	234	child[AX25_VALUES_DS_TIMEOUT].procname = NULL;
	235	#endif
	236
	237	child[AX25_MAX_VALUES].ctl_name = 0; /* just in case... */
	238
	239	for (k = 0; k < AX25_MAX_VALUES; k++)
	240	child[k].data = &ax25_dev->values[k];
	241
	242	n++;
	243	}
	244	spin_unlock_bh(&ax25_dev_lock);
	245
	246	ax25_dir_table[0].child = ax25_table;
	247
0b4d4147	248	ax25_table_header = register_sysctl_table(ax25_root_table);
1da177e4 LT	249	}
	250
	251	void ax25_unregister_sysctl(void)
	252	{
	253	ctl_table *p;
	254	unregister_sysctl_table(ax25_table_header);
	255
	256	ax25_dir_table[0].child = NULL;
	257	for (p = ax25_table; p->ctl_name; p++)
	258	kfree(p->child);
	259	kfree(ax25_table);
	260	}