Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * X.25 Packet Layer release 002 | |
3 | * | |
4 | * This is ALPHA test software. This code may break your machine, | |
5 | * randomly fail to work with new releases, misbehave and/or generally | |
6 | * screw up. It might even work. | |
7 | * | |
8 | * This code REQUIRES 2.4 with seq_file support | |
9 | * | |
10 | * This module: | |
11 | * This module is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * History | |
17 | * 2002/10/06 Arnaldo Carvalho de Melo seq_file support | |
18 | */ | |
19 | ||
20 | #include <linux/config.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/proc_fs.h> | |
23 | #include <linux/seq_file.h> | |
24 | #include <net/sock.h> | |
25 | #include <net/x25.h> | |
26 | ||
27 | #ifdef CONFIG_PROC_FS | |
28 | static __inline__ struct x25_route *x25_get_route_idx(loff_t pos) | |
29 | { | |
30 | struct list_head *route_entry; | |
31 | struct x25_route *rt = NULL; | |
32 | ||
33 | list_for_each(route_entry, &x25_route_list) { | |
34 | rt = list_entry(route_entry, struct x25_route, node); | |
35 | if (!pos--) | |
36 | goto found; | |
37 | } | |
38 | rt = NULL; | |
39 | found: | |
40 | return rt; | |
41 | } | |
42 | ||
43 | static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) | |
44 | { | |
45 | loff_t l = *pos; | |
46 | ||
47 | read_lock_bh(&x25_route_list_lock); | |
48 | return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN; | |
49 | } | |
50 | ||
51 | static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
52 | { | |
53 | struct x25_route *rt; | |
54 | ||
55 | ++*pos; | |
56 | if (v == SEQ_START_TOKEN) { | |
57 | rt = NULL; | |
58 | if (!list_empty(&x25_route_list)) | |
59 | rt = list_entry(x25_route_list.next, | |
60 | struct x25_route, node); | |
61 | goto out; | |
62 | } | |
63 | rt = v; | |
64 | if (rt->node.next != &x25_route_list) | |
65 | rt = list_entry(rt->node.next, struct x25_route, node); | |
66 | else | |
67 | rt = NULL; | |
68 | out: | |
69 | return rt; | |
70 | } | |
71 | ||
72 | static void x25_seq_route_stop(struct seq_file *seq, void *v) | |
73 | { | |
74 | read_unlock_bh(&x25_route_list_lock); | |
75 | } | |
76 | ||
77 | static int x25_seq_route_show(struct seq_file *seq, void *v) | |
78 | { | |
79 | struct x25_route *rt; | |
80 | ||
81 | if (v == SEQ_START_TOKEN) { | |
82 | seq_puts(seq, "Address Digits Device\n"); | |
83 | goto out; | |
84 | } | |
85 | ||
86 | rt = v; | |
87 | seq_printf(seq, "%-15s %-6d %-5s\n", | |
88 | rt->address.x25_addr, rt->sigdigits, | |
89 | rt->dev ? rt->dev->name : "???"); | |
90 | out: | |
91 | return 0; | |
92 | } | |
93 | ||
94 | static __inline__ struct sock *x25_get_socket_idx(loff_t pos) | |
95 | { | |
96 | struct sock *s; | |
97 | struct hlist_node *node; | |
98 | ||
99 | sk_for_each(s, node, &x25_list) | |
100 | if (!pos--) | |
101 | goto found; | |
102 | s = NULL; | |
103 | found: | |
104 | return s; | |
105 | } | |
106 | ||
107 | static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
108 | { | |
109 | loff_t l = *pos; | |
110 | ||
111 | read_lock_bh(&x25_list_lock); | |
112 | return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN; | |
113 | } | |
114 | ||
115 | static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
116 | { | |
117 | struct sock *s; | |
118 | ||
119 | ++*pos; | |
120 | if (v == SEQ_START_TOKEN) { | |
121 | s = sk_head(&x25_list); | |
122 | goto out; | |
123 | } | |
124 | s = sk_next(v); | |
125 | out: | |
126 | return s; | |
127 | } | |
128 | ||
129 | static void x25_seq_socket_stop(struct seq_file *seq, void *v) | |
130 | { | |
131 | read_unlock_bh(&x25_list_lock); | |
132 | } | |
133 | ||
134 | static int x25_seq_socket_show(struct seq_file *seq, void *v) | |
135 | { | |
136 | struct sock *s; | |
137 | struct x25_sock *x25; | |
138 | struct net_device *dev; | |
139 | const char *devname; | |
140 | ||
141 | if (v == SEQ_START_TOKEN) { | |
142 | seq_printf(seq, "dest_addr src_addr dev lci st vs vr " | |
143 | "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); | |
144 | goto out; | |
145 | } | |
146 | ||
147 | s = v; | |
148 | x25 = x25_sk(s); | |
149 | ||
150 | if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) | |
151 | devname = "???"; | |
152 | else | |
153 | devname = x25->neighbour->dev->name; | |
154 | ||
155 | seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " | |
156 | "%3lu %3lu %3lu %5d %5d %ld\n", | |
157 | !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, | |
158 | !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, | |
159 | devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, | |
160 | x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, | |
161 | x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, | |
162 | atomic_read(&s->sk_wmem_alloc), | |
163 | atomic_read(&s->sk_rmem_alloc), | |
164 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); | |
165 | out: | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static struct seq_operations x25_seq_route_ops = { | |
170 | .start = x25_seq_route_start, | |
171 | .next = x25_seq_route_next, | |
172 | .stop = x25_seq_route_stop, | |
173 | .show = x25_seq_route_show, | |
174 | }; | |
175 | ||
176 | static struct seq_operations x25_seq_socket_ops = { | |
177 | .start = x25_seq_socket_start, | |
178 | .next = x25_seq_socket_next, | |
179 | .stop = x25_seq_socket_stop, | |
180 | .show = x25_seq_socket_show, | |
181 | }; | |
182 | ||
183 | static int x25_seq_socket_open(struct inode *inode, struct file *file) | |
184 | { | |
185 | return seq_open(file, &x25_seq_socket_ops); | |
186 | } | |
187 | ||
188 | static int x25_seq_route_open(struct inode *inode, struct file *file) | |
189 | { | |
190 | return seq_open(file, &x25_seq_route_ops); | |
191 | } | |
192 | ||
193 | static struct file_operations x25_seq_socket_fops = { | |
194 | .owner = THIS_MODULE, | |
195 | .open = x25_seq_socket_open, | |
196 | .read = seq_read, | |
197 | .llseek = seq_lseek, | |
198 | .release = seq_release, | |
199 | }; | |
200 | ||
201 | static struct file_operations x25_seq_route_fops = { | |
202 | .owner = THIS_MODULE, | |
203 | .open = x25_seq_route_open, | |
204 | .read = seq_read, | |
205 | .llseek = seq_lseek, | |
206 | .release = seq_release, | |
207 | }; | |
208 | ||
209 | static struct proc_dir_entry *x25_proc_dir; | |
210 | ||
211 | int __init x25_proc_init(void) | |
212 | { | |
213 | struct proc_dir_entry *p; | |
214 | int rc = -ENOMEM; | |
215 | ||
216 | x25_proc_dir = proc_mkdir("x25", proc_net); | |
217 | if (!x25_proc_dir) | |
218 | goto out; | |
219 | ||
220 | p = create_proc_entry("route", S_IRUGO, x25_proc_dir); | |
221 | if (!p) | |
222 | goto out_route; | |
223 | p->proc_fops = &x25_seq_route_fops; | |
224 | ||
225 | p = create_proc_entry("socket", S_IRUGO, x25_proc_dir); | |
226 | if (!p) | |
227 | goto out_socket; | |
228 | p->proc_fops = &x25_seq_socket_fops; | |
229 | rc = 0; | |
230 | out: | |
231 | return rc; | |
232 | out_socket: | |
233 | remove_proc_entry("route", x25_proc_dir); | |
234 | out_route: | |
235 | remove_proc_entry("x25", proc_net); | |
236 | goto out; | |
237 | } | |
238 | ||
239 | void __exit x25_proc_exit(void) | |
240 | { | |
241 | remove_proc_entry("route", x25_proc_dir); | |
242 | remove_proc_entry("socket", x25_proc_dir); | |
243 | remove_proc_entry("x25", proc_net); | |
244 | } | |
245 | ||
246 | #else /* CONFIG_PROC_FS */ | |
247 | ||
248 | int __init x25_proc_init(void) | |
249 | { | |
250 | return 0; | |
251 | } | |
252 | ||
253 | void __exit x25_proc_exit(void) | |
254 | { | |
255 | } | |
256 | #endif /* CONFIG_PROC_FS */ |