summaryrefslogtreecommitdiffstats
path: root/net/x25/x25_proc.c
blob: 7d55e50c936f9a2fe11daeba85ece6099815b858 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/*
 *	X.25 Packet Layer release 002
 *
 *	This is ALPHA test software. This code may break your machine,
 *	randomly fail to work with new releases, misbehave and/or generally
 *	screw up. It might even work.
 *
 *	This code REQUIRES 2.4 with seq_file support
 *
 *	This module:
 *		This module 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.
 *
 *	History
 *	2002/10/06	Arnaldo Carvalho de Melo  seq_file support
 */

#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/x25.h>

#ifdef CONFIG_PROC_FS
static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
{
	struct list_head *route_entry;
	struct x25_route *rt = NULL;

	list_for_each(route_entry, &x25_route_list) {
		rt = list_entry(route_entry, struct x25_route, node);
		if (!pos--)
			goto found;
	}
	rt = NULL;
found:
	return rt;
}

static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
{
	loff_t l = *pos;

	read_lock_bh(&x25_route_list_lock);
	return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN;
}

static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct x25_route *rt;

	++*pos;
	if (v == SEQ_START_TOKEN) {
		rt = NULL;
		if (!list_empty(&x25_route_list))
			rt = list_entry(x25_route_list.next,
					struct x25_route, node);
		goto out;
	}
	rt = v;
	if (rt->node.next != &x25_route_list)
		rt = list_entry(rt->node.next, struct x25_route, node);
	else
		rt = NULL;
out:
	return rt;
}

static void x25_seq_route_stop(struct seq_file *seq, void *v)
{
	read_unlock_bh(&x25_route_list_lock);
}

static int x25_seq_route_show(struct seq_file *seq, void *v)
{
	struct x25_route *rt;

	if (v == SEQ_START_TOKEN) {
		seq_puts(seq, "Address          Digits  Device\n");
		goto out;
	}

	rt = v;
	seq_printf(seq, "%-15s  %-6d  %-5s\n",
		   rt->address.x25_addr, rt->sigdigits,
		   rt->dev ? rt->dev->name : "???");
out:
	return 0;
}

static __inline__ struct sock *x25_get_socket_idx(loff_t pos)
{
	struct sock *s;
	struct hlist_node *node;

	sk_for_each(s, node, &x25_list)
		if (!pos--)
			goto found;
	s = NULL;
found:
	return s;
}

static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos)
{
	loff_t l = *pos;

	read_lock_bh(&x25_list_lock);
	return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN;
}

static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct sock *s;

	++*pos;
	if (v == SEQ_START_TOKEN) {
		s = sk_head(&x25_list);
		goto out;
	}
	s = sk_next(v);
out:
	return s;
}

static void x25_seq_socket_stop(struct seq_file *seq, void *v)
{
	read_unlock_bh(&x25_list_lock);
}

static int x25_seq_socket_show(struct seq_file *seq, void *v)
{
	struct sock *s;
	struct x25_sock *x25;
	struct net_device *dev;
	const char *devname;

	if (v == SEQ_START_TOKEN) {
		seq_printf(seq, "dest_addr  src_addr   dev   lci st vs vr "
				"va   t  t2 t21 t22 t23 Snd-Q Rcv-Q inode\n");
		goto out;
	}

	s = v;
	x25 = x25_sk(s);

	if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL)
		devname = "???";
	else
		devname = x25->neighbour->dev->name;

	seq_printf(seq, "%-10s %-10s %-5s %3.3X  %d  %d  %d  %d %3lu %3lu "
			"%3lu %3lu %3lu %5d %5d %ld\n",
		   !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr,
		   !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr,
		   devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr,
		   x25->va, x25_display_timer(s) / HZ, x25->t2  / HZ,
		   x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ,
		   atomic_read(&s->sk_wmem_alloc),
		   atomic_read(&s->sk_rmem_alloc),
		   s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
out:
	return 0;
}

static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
{
	struct x25_forward *f;
	struct list_head *entry;

	list_for_each(entry, &x25_forward_list) {
		f = list_entry(entry, struct x25_forward, node);
		if (!pos--)
			goto found;
	}

	f = NULL;
found:
	return f;
}

static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
{
	loff_t l = *pos;

	read_lock_bh(&x25_forward_list_lock);
	return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;
}

static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct x25_forward *f;

	++*pos;
	if (v == SEQ_START_TOKEN) {
		f = NULL;
		if (!list_empty(&x25_forward_list))
			f = list_entry(x25_forward_list.next,
					struct x25_forward, node);
		goto out;
	}
	f = v;
	if (f->node.next != &x25_forward_list)
		f = list_entry(f->node.next, struct x25_forward, node);
	else
		f = NULL;
out:
	return f;

}

static void x25_seq_forward_stop(struct seq_file *seq, void *v)
{
	read_unlock_bh(&x25_forward_list_lock);
}

static int x25_seq_forward_show(struct seq_file *seq, void *v)
{
	struct x25_forward *f;

	if (v == SEQ_START_TOKEN) {
		seq_printf(seq, "lci dev1       dev2\n");
		goto out;
	}

	f = v;

	seq_printf(seq, "%d %-10s %-10s\n",
			f->lci, f->dev1->name, f->dev2->name);

out:
	return 0;
}

static const struct seq_operations x25_seq_route_ops = {
	.start  = x25_seq_route_start,
	.next   = x25_seq_route_next,
	.stop   = x25_seq_route_stop,
	.show   = x25_seq_route_show,
};

static const struct seq_operations x25_seq_socket_ops = {
	.start  = x25_seq_socket_start,
	.next   = x25_seq_socket_next,
	.stop   = x25_seq_socket_stop,
	.show   = x25_seq_socket_show,
};

static const struct seq_operations x25_seq_forward_ops = {
	.start  = x25_seq_forward_start,
	.next   = x25_seq_forward_next,
	.stop   = x25_seq_forward_stop,
	.show   = x25_seq_forward_show,
};

static int x25_seq_socket_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &x25_seq_socket_ops);
}

static int x25_seq_route_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &x25_seq_route_ops);
}

static int x25_seq_forward_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &x25_seq_forward_ops);
}

static const struct file_operations x25_seq_socket_fops = {
	.owner		= THIS_MODULE,
	.open		= x25_seq_socket_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static const struct file_operations x25_seq_route_fops = {
	.owner		= THIS_MODULE,
	.open		= x25_seq_route_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static struct file_operations x25_seq_forward_fops = {
	.owner		= THIS_MODULE,
	.open		= x25_seq_forward_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static struct proc_dir_entry *x25_proc_dir;

int __init x25_proc_init(void)
{
	struct proc_dir_entry *p;
	int rc = -ENOMEM;

	x25_proc_dir = proc_mkdir("x25", init_net.proc_net);
	if (!x25_proc_dir)
		goto out;

	p = create_proc_entry("route", S_IRUGO, x25_proc_dir);
	if (!p)
		goto out_route;
	p->proc_fops = &x25_seq_route_fops;

	p = create_proc_entry("socket", S_IRUGO, x25_proc_dir);
	if (!p)
		goto out_socket;
	p->proc_fops = &x25_seq_socket_fops;

	p = create_proc_entry("forward", S_IRUGO, x25_proc_dir);
	if (!p)
		goto out_forward;
	p->proc_fops = &x25_seq_forward_fops;
	rc = 0;

out:
	return rc;
out_forward:
	remove_proc_entry("socket", x25_proc_dir);
out_socket:
	remove_proc_entry("route", x25_proc_dir);
out_route:
	remove_proc_entry("x25", init_net.proc_net);
	goto out;
}

void __exit x25_proc_exit(void)
{
	remove_proc_entry("forward", x25_proc_dir);
	remove_proc_entry("route", x25_proc_dir);
	remove_proc_entry("socket", x25_proc_dir);
	remove_proc_entry("x25", init_net.proc_net);
}

#else /* CONFIG_PROC_FS */

int __init x25_proc_init(void)
{
	return 0;
}

void __exit x25_proc_exit(void)
{
}
#endif /* CONFIG_PROC_FS */
OpenPOWER on IntegriCloud