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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 | |
f8e1d201 | 6 | * screw up. It might even work. |
1da177e4 LT |
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 | ||
1da177e4 LT |
20 | #include <linux/init.h> |
21 | #include <linux/proc_fs.h> | |
22 | #include <linux/seq_file.h> | |
23 | #include <net/sock.h> | |
24 | #include <net/x25.h> | |
25 | ||
26 | #ifdef CONFIG_PROC_FS | |
27 | static __inline__ struct x25_route *x25_get_route_idx(loff_t pos) | |
28 | { | |
29 | struct list_head *route_entry; | |
30 | struct x25_route *rt = NULL; | |
31 | ||
32 | list_for_each(route_entry, &x25_route_list) { | |
33 | rt = list_entry(route_entry, struct x25_route, node); | |
34 | if (!pos--) | |
35 | goto found; | |
36 | } | |
37 | rt = NULL; | |
38 | found: | |
39 | return rt; | |
40 | } | |
41 | ||
42 | static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) | |
43 | { | |
44 | loff_t l = *pos; | |
45 | ||
46 | read_lock_bh(&x25_route_list_lock); | |
47 | return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN; | |
48 | } | |
49 | ||
50 | static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
51 | { | |
52 | struct x25_route *rt; | |
53 | ||
54 | ++*pos; | |
55 | if (v == SEQ_START_TOKEN) { | |
56 | rt = NULL; | |
57 | if (!list_empty(&x25_route_list)) | |
58 | rt = list_entry(x25_route_list.next, | |
59 | struct x25_route, node); | |
60 | goto out; | |
61 | } | |
62 | rt = v; | |
63 | if (rt->node.next != &x25_route_list) | |
64 | rt = list_entry(rt->node.next, struct x25_route, node); | |
f8e1d201 | 65 | else |
1da177e4 LT |
66 | rt = NULL; |
67 | out: | |
68 | return rt; | |
69 | } | |
70 | ||
71 | static void x25_seq_route_stop(struct seq_file *seq, void *v) | |
72 | { | |
73 | read_unlock_bh(&x25_route_list_lock); | |
74 | } | |
75 | ||
76 | static int x25_seq_route_show(struct seq_file *seq, void *v) | |
77 | { | |
78 | struct x25_route *rt; | |
79 | ||
80 | if (v == SEQ_START_TOKEN) { | |
81 | seq_puts(seq, "Address Digits Device\n"); | |
82 | goto out; | |
83 | } | |
84 | ||
85 | rt = v; | |
86 | seq_printf(seq, "%-15s %-6d %-5s\n", | |
87 | rt->address.x25_addr, rt->sigdigits, | |
88 | rt->dev ? rt->dev->name : "???"); | |
89 | out: | |
90 | return 0; | |
f8e1d201 | 91 | } |
1da177e4 LT |
92 | |
93 | static __inline__ struct sock *x25_get_socket_idx(loff_t pos) | |
94 | { | |
95 | struct sock *s; | |
96 | struct hlist_node *node; | |
97 | ||
98 | sk_for_each(s, node, &x25_list) | |
99 | if (!pos--) | |
100 | goto found; | |
101 | s = NULL; | |
102 | found: | |
103 | return s; | |
104 | } | |
105 | ||
106 | static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) | |
107 | { | |
108 | loff_t l = *pos; | |
109 | ||
110 | read_lock_bh(&x25_list_lock); | |
111 | return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN; | |
112 | } | |
113 | ||
114 | static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
115 | { | |
116 | struct sock *s; | |
117 | ||
118 | ++*pos; | |
119 | if (v == SEQ_START_TOKEN) { | |
120 | s = sk_head(&x25_list); | |
121 | goto out; | |
122 | } | |
123 | s = sk_next(v); | |
124 | out: | |
125 | return s; | |
126 | } | |
127 | ||
128 | static void x25_seq_socket_stop(struct seq_file *seq, void *v) | |
129 | { | |
130 | read_unlock_bh(&x25_list_lock); | |
131 | } | |
132 | ||
133 | static int x25_seq_socket_show(struct seq_file *seq, void *v) | |
134 | { | |
135 | struct sock *s; | |
136 | struct x25_sock *x25; | |
137 | struct net_device *dev; | |
138 | const char *devname; | |
139 | ||
140 | if (v == SEQ_START_TOKEN) { | |
141 | seq_printf(seq, "dest_addr src_addr dev lci st vs vr " | |
142 | "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); | |
143 | goto out; | |
144 | } | |
145 | ||
146 | s = v; | |
147 | x25 = x25_sk(s); | |
148 | ||
149 | if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) | |
150 | devname = "???"; | |
151 | else | |
152 | devname = x25->neighbour->dev->name; | |
153 | ||
154 | seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " | |
155 | "%3lu %3lu %3lu %5d %5d %ld\n", | |
156 | !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, | |
157 | !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, | |
158 | devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, | |
159 | x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, | |
160 | x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, | |
161 | atomic_read(&s->sk_wmem_alloc), | |
162 | atomic_read(&s->sk_rmem_alloc), | |
163 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); | |
164 | out: | |
165 | return 0; | |
f8e1d201 | 166 | } |
1da177e4 | 167 | |
c9c2e9dc AH |
168 | static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos) |
169 | { | |
170 | struct x25_forward *f; | |
171 | struct list_head *entry; | |
172 | ||
173 | list_for_each(entry, &x25_forward_list) { | |
174 | f = list_entry(entry, struct x25_forward, node); | |
175 | if (!pos--) | |
176 | goto found; | |
177 | } | |
178 | ||
179 | f = NULL; | |
180 | found: | |
181 | return f; | |
182 | } | |
183 | ||
184 | static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) | |
185 | { | |
186 | loff_t l = *pos; | |
187 | ||
188 | read_lock_bh(&x25_forward_list_lock); | |
189 | return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN; | |
190 | } | |
191 | ||
192 | static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) | |
193 | { | |
194 | struct x25_forward *f; | |
195 | ||
196 | ++*pos; | |
197 | if (v == SEQ_START_TOKEN) { | |
198 | f = NULL; | |
199 | if (!list_empty(&x25_forward_list)) | |
200 | f = list_entry(x25_forward_list.next, | |
201 | struct x25_forward, node); | |
202 | goto out; | |
203 | } | |
204 | f = v; | |
205 | if (f->node.next != &x25_forward_list) | |
206 | f = list_entry(f->node.next, struct x25_forward, node); | |
207 | else | |
208 | f = NULL; | |
209 | out: | |
210 | return f; | |
211 | ||
212 | } | |
213 | ||
214 | static void x25_seq_forward_stop(struct seq_file *seq, void *v) | |
215 | { | |
216 | read_unlock_bh(&x25_forward_list_lock); | |
217 | } | |
218 | ||
219 | static int x25_seq_forward_show(struct seq_file *seq, void *v) | |
220 | { | |
221 | struct x25_forward *f; | |
222 | ||
223 | if (v == SEQ_START_TOKEN) { | |
224 | seq_printf(seq, "lci dev1 dev2\n"); | |
225 | goto out; | |
226 | } | |
227 | ||
228 | f = v; | |
229 | ||
230 | seq_printf(seq, "%d %-10s %-10s\n", | |
231 | f->lci, f->dev1->name, f->dev2->name); | |
232 | ||
233 | out: | |
234 | return 0; | |
235 | } | |
236 | ||
56b3d975 | 237 | static const struct seq_operations x25_seq_route_ops = { |
1da177e4 LT |
238 | .start = x25_seq_route_start, |
239 | .next = x25_seq_route_next, | |
240 | .stop = x25_seq_route_stop, | |
241 | .show = x25_seq_route_show, | |
242 | }; | |
243 | ||
56b3d975 | 244 | static const struct seq_operations x25_seq_socket_ops = { |
1da177e4 LT |
245 | .start = x25_seq_socket_start, |
246 | .next = x25_seq_socket_next, | |
247 | .stop = x25_seq_socket_stop, | |
248 | .show = x25_seq_socket_show, | |
249 | }; | |
250 | ||
56b3d975 | 251 | static const struct seq_operations x25_seq_forward_ops = { |
c9c2e9dc AH |
252 | .start = x25_seq_forward_start, |
253 | .next = x25_seq_forward_next, | |
254 | .stop = x25_seq_forward_stop, | |
255 | .show = x25_seq_forward_show, | |
256 | }; | |
257 | ||
1da177e4 LT |
258 | static int x25_seq_socket_open(struct inode *inode, struct file *file) |
259 | { | |
260 | return seq_open(file, &x25_seq_socket_ops); | |
261 | } | |
262 | ||
263 | static int x25_seq_route_open(struct inode *inode, struct file *file) | |
264 | { | |
265 | return seq_open(file, &x25_seq_route_ops); | |
266 | } | |
267 | ||
c9c2e9dc AH |
268 | static int x25_seq_forward_open(struct inode *inode, struct file *file) |
269 | { | |
270 | return seq_open(file, &x25_seq_forward_ops); | |
271 | } | |
272 | ||
da7071d7 | 273 | static const struct file_operations x25_seq_socket_fops = { |
1da177e4 LT |
274 | .owner = THIS_MODULE, |
275 | .open = x25_seq_socket_open, | |
276 | .read = seq_read, | |
277 | .llseek = seq_lseek, | |
278 | .release = seq_release, | |
279 | }; | |
280 | ||
da7071d7 | 281 | static const struct file_operations x25_seq_route_fops = { |
1da177e4 LT |
282 | .owner = THIS_MODULE, |
283 | .open = x25_seq_route_open, | |
284 | .read = seq_read, | |
285 | .llseek = seq_lseek, | |
286 | .release = seq_release, | |
287 | }; | |
288 | ||
c9c2e9dc AH |
289 | static struct file_operations x25_seq_forward_fops = { |
290 | .owner = THIS_MODULE, | |
291 | .open = x25_seq_forward_open, | |
292 | .read = seq_read, | |
293 | .llseek = seq_lseek, | |
294 | .release = seq_release, | |
295 | }; | |
296 | ||
1da177e4 LT |
297 | static struct proc_dir_entry *x25_proc_dir; |
298 | ||
299 | int __init x25_proc_init(void) | |
300 | { | |
301 | struct proc_dir_entry *p; | |
302 | int rc = -ENOMEM; | |
303 | ||
304 | x25_proc_dir = proc_mkdir("x25", proc_net); | |
305 | if (!x25_proc_dir) | |
306 | goto out; | |
307 | ||
308 | p = create_proc_entry("route", S_IRUGO, x25_proc_dir); | |
309 | if (!p) | |
310 | goto out_route; | |
311 | p->proc_fops = &x25_seq_route_fops; | |
312 | ||
313 | p = create_proc_entry("socket", S_IRUGO, x25_proc_dir); | |
314 | if (!p) | |
315 | goto out_socket; | |
316 | p->proc_fops = &x25_seq_socket_fops; | |
c9c2e9dc AH |
317 | |
318 | p = create_proc_entry("forward", S_IRUGO, x25_proc_dir); | |
319 | if (!p) | |
320 | goto out_forward; | |
321 | p->proc_fops = &x25_seq_forward_fops; | |
1da177e4 | 322 | rc = 0; |
c9c2e9dc | 323 | |
1da177e4 LT |
324 | out: |
325 | return rc; | |
c9c2e9dc AH |
326 | out_forward: |
327 | remove_proc_entry("socket", x25_proc_dir); | |
1da177e4 LT |
328 | out_socket: |
329 | remove_proc_entry("route", x25_proc_dir); | |
330 | out_route: | |
331 | remove_proc_entry("x25", proc_net); | |
332 | goto out; | |
333 | } | |
334 | ||
335 | void __exit x25_proc_exit(void) | |
336 | { | |
c9c2e9dc | 337 | remove_proc_entry("forward", x25_proc_dir); |
1da177e4 LT |
338 | remove_proc_entry("route", x25_proc_dir); |
339 | remove_proc_entry("socket", x25_proc_dir); | |
340 | remove_proc_entry("x25", proc_net); | |
341 | } | |
342 | ||
343 | #else /* CONFIG_PROC_FS */ | |
344 | ||
345 | int __init x25_proc_init(void) | |
346 | { | |
347 | return 0; | |
348 | } | |
349 | ||
350 | void __exit x25_proc_exit(void) | |
351 | { | |
352 | } | |
353 | #endif /* CONFIG_PROC_FS */ |