aboutsummaryrefslogtreecommitdiff
path: root/net/x25/x25_proc.c
blob: 3bddcbdf2e4060840a915e6a84f97c1a4cb98f61 (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
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	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
 *
 *	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 <linux/export.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/x25.h>

#ifdef CONFIG_PROC_FS

static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
	__acquires(x25_route_list_lock)
{
	read_lock_bh(&x25_route_list_lock);
	return seq_list_start_head(&x25_route_list, *pos);
}

static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
{
	return seq_list_next(v, &x25_route_list, pos);
}

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

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

	if (v == &x25_route_list) {
		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 void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos)
	__acquires(x25_list_lock)
{
	read_lock_bh(&x25_list_lock);
	return seq_hlist_start_head(&x25_list, *pos);
}

static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
{
	return seq_hlist_next(v, &x25_list, pos);
}

static void x25_seq_socket_stop(struct seq_file *seq, void *v)
	__releases(x25_list_lock)
{
	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 = sk_entry(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,
		   sk_wmem_alloc_get(s),
		   sk_rmem_alloc_get(s),
		   s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
out:
	return 0;
}

static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
	__acquires(x25_forward_list_lock)
{
	read_lock_bh(&x25_forward_list_lock);
	return seq_list_start_head(&x25_forward_list, *pos);
}

static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
{
	return seq_list_next(v, &x25_forward_list, pos);
}

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

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

	if (v == &x25_forward_list) {
		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,
};

int __init x25_proc_init(void)
{
	if (!proc_mkdir("x25", init_net.proc_net))
		return -ENOMEM;

	if (!proc_create_seq("x25/route", 0444, init_net.proc_net,
			 &x25_seq_route_ops))
		goto out;

	if (!proc_create_seq("x25/socket", 0444, init_net.proc_net,
			 &x25_seq_socket_ops))
		goto out;

	if (!proc_create_seq("x25/forward", 0444, init_net.proc_net,
			 &x25_seq_forward_ops))
		goto out;
	return 0;

out:
	remove_proc_subtree("x25", init_net.proc_net);
	return -ENOMEM;
}

void __exit x25_proc_exit(void)
{
	remove_proc_subtree("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 */