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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> | |
457c4cbc | 23 | #include <net/net_namespace.h> |
1da177e4 LT |
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) | |
6bf1574e | 44 | __acquires(x25_route_list_lock) |
1da177e4 LT |
45 | { |
46 | loff_t l = *pos; | |
47 | ||
48 | read_lock_bh(&x25_route_list_lock); | |
49 | return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN; | |
50 | } | |
51 | ||
52 | static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) | |
53 | { | |
54 | struct x25_route *rt; | |
55 | ||
56 | ++*pos; | |
57 | if (v == SEQ_START_TOKEN) { | |
58 | rt = NULL; | |
59 | if (!list_empty(&x25_route_list)) | |
60 | rt = list_entry(x25_route_list.next, | |
61 | struct x25_route, node); | |
62 | goto out; | |
63 | } | |
64 | rt = v; | |
65 | if (rt->node.next != &x25_route_list) | |
66 | rt = list_entry(rt->node.next, struct x25_route, node); | |
f8e1d201 | 67 | else |
1da177e4 LT |
68 | rt = NULL; |
69 | out: | |
70 | return rt; | |
71 | } | |
72 | ||
73 | static void x25_seq_route_stop(struct seq_file *seq, void *v) | |
6bf1574e | 74 | __releases(x25_route_list_lock) |
1da177e4 LT |
75 | { |
76 | read_unlock_bh(&x25_route_list_lock); | |
77 | } | |
78 | ||
79 | static int x25_seq_route_show(struct seq_file *seq, void *v) | |
80 | { | |
81 | struct x25_route *rt; | |
82 | ||
83 | if (v == SEQ_START_TOKEN) { | |
84 | seq_puts(seq, "Address Digits Device\n"); | |
85 | goto out; | |
86 | } | |
87 | ||
88 | rt = v; | |
89 | seq_printf(seq, "%-15s %-6d %-5s\n", | |
90 | rt->address.x25_addr, rt->sigdigits, | |
91 | rt->dev ? rt->dev->name : "???"); | |
92 | out: | |
93 | return 0; | |
f8e1d201 | 94 | } |
1da177e4 | 95 | |
1da177e4 | 96 | static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) |
6bf1574e | 97 | __acquires(x25_list_lock) |
1da177e4 | 98 | { |
1da177e4 | 99 | read_lock_bh(&x25_list_lock); |
32d2e3a1 | 100 | return seq_hlist_start_head(&x25_list, *pos); |
1da177e4 LT |
101 | } |
102 | ||
103 | static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) | |
104 | { | |
32d2e3a1 | 105 | return seq_hlist_next(v, &x25_list, pos); |
1da177e4 LT |
106 | } |
107 | ||
108 | static void x25_seq_socket_stop(struct seq_file *seq, void *v) | |
6bf1574e | 109 | __releases(x25_list_lock) |
1da177e4 LT |
110 | { |
111 | read_unlock_bh(&x25_list_lock); | |
112 | } | |
113 | ||
114 | static int x25_seq_socket_show(struct seq_file *seq, void *v) | |
115 | { | |
116 | struct sock *s; | |
117 | struct x25_sock *x25; | |
118 | struct net_device *dev; | |
119 | const char *devname; | |
120 | ||
121 | if (v == SEQ_START_TOKEN) { | |
122 | seq_printf(seq, "dest_addr src_addr dev lci st vs vr " | |
123 | "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); | |
124 | goto out; | |
125 | } | |
126 | ||
32d2e3a1 | 127 | s = sk_entry(v); |
1da177e4 LT |
128 | x25 = x25_sk(s); |
129 | ||
130 | if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) | |
131 | devname = "???"; | |
132 | else | |
133 | devname = x25->neighbour->dev->name; | |
134 | ||
135 | seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " | |
136 | "%3lu %3lu %3lu %5d %5d %ld\n", | |
137 | !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, | |
138 | !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, | |
139 | devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, | |
140 | x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, | |
141 | x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, | |
31e6d363 ED |
142 | sk_wmem_alloc_get(s), |
143 | sk_rmem_alloc_get(s), | |
1da177e4 LT |
144 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); |
145 | out: | |
146 | return 0; | |
f8e1d201 | 147 | } |
1da177e4 | 148 | |
c9c2e9dc AH |
149 | static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos) |
150 | { | |
151 | struct x25_forward *f; | |
152 | struct list_head *entry; | |
153 | ||
154 | list_for_each(entry, &x25_forward_list) { | |
155 | f = list_entry(entry, struct x25_forward, node); | |
156 | if (!pos--) | |
157 | goto found; | |
158 | } | |
159 | ||
160 | f = NULL; | |
161 | found: | |
162 | return f; | |
163 | } | |
164 | ||
165 | static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) | |
6bf1574e | 166 | __acquires(x25_forward_list_lock) |
c9c2e9dc AH |
167 | { |
168 | loff_t l = *pos; | |
169 | ||
170 | read_lock_bh(&x25_forward_list_lock); | |
171 | return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN; | |
172 | } | |
173 | ||
174 | static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) | |
175 | { | |
176 | struct x25_forward *f; | |
177 | ||
178 | ++*pos; | |
179 | if (v == SEQ_START_TOKEN) { | |
180 | f = NULL; | |
181 | if (!list_empty(&x25_forward_list)) | |
182 | f = list_entry(x25_forward_list.next, | |
183 | struct x25_forward, node); | |
184 | goto out; | |
185 | } | |
186 | f = v; | |
187 | if (f->node.next != &x25_forward_list) | |
188 | f = list_entry(f->node.next, struct x25_forward, node); | |
189 | else | |
190 | f = NULL; | |
191 | out: | |
192 | return f; | |
193 | ||
194 | } | |
195 | ||
196 | static void x25_seq_forward_stop(struct seq_file *seq, void *v) | |
6bf1574e | 197 | __releases(x25_forward_list_lock) |
c9c2e9dc AH |
198 | { |
199 | read_unlock_bh(&x25_forward_list_lock); | |
200 | } | |
201 | ||
202 | static int x25_seq_forward_show(struct seq_file *seq, void *v) | |
203 | { | |
204 | struct x25_forward *f; | |
205 | ||
206 | if (v == SEQ_START_TOKEN) { | |
207 | seq_printf(seq, "lci dev1 dev2\n"); | |
208 | goto out; | |
209 | } | |
210 | ||
211 | f = v; | |
212 | ||
213 | seq_printf(seq, "%d %-10s %-10s\n", | |
214 | f->lci, f->dev1->name, f->dev2->name); | |
215 | ||
216 | out: | |
217 | return 0; | |
218 | } | |
219 | ||
56b3d975 | 220 | static const struct seq_operations x25_seq_route_ops = { |
1da177e4 LT |
221 | .start = x25_seq_route_start, |
222 | .next = x25_seq_route_next, | |
223 | .stop = x25_seq_route_stop, | |
224 | .show = x25_seq_route_show, | |
225 | }; | |
226 | ||
56b3d975 | 227 | static const struct seq_operations x25_seq_socket_ops = { |
1da177e4 LT |
228 | .start = x25_seq_socket_start, |
229 | .next = x25_seq_socket_next, | |
230 | .stop = x25_seq_socket_stop, | |
231 | .show = x25_seq_socket_show, | |
232 | }; | |
233 | ||
56b3d975 | 234 | static const struct seq_operations x25_seq_forward_ops = { |
c9c2e9dc AH |
235 | .start = x25_seq_forward_start, |
236 | .next = x25_seq_forward_next, | |
237 | .stop = x25_seq_forward_stop, | |
238 | .show = x25_seq_forward_show, | |
239 | }; | |
240 | ||
1da177e4 LT |
241 | static int x25_seq_socket_open(struct inode *inode, struct file *file) |
242 | { | |
243 | return seq_open(file, &x25_seq_socket_ops); | |
244 | } | |
245 | ||
246 | static int x25_seq_route_open(struct inode *inode, struct file *file) | |
247 | { | |
248 | return seq_open(file, &x25_seq_route_ops); | |
249 | } | |
250 | ||
c9c2e9dc AH |
251 | static int x25_seq_forward_open(struct inode *inode, struct file *file) |
252 | { | |
253 | return seq_open(file, &x25_seq_forward_ops); | |
254 | } | |
255 | ||
da7071d7 | 256 | static const struct file_operations x25_seq_socket_fops = { |
1da177e4 LT |
257 | .owner = THIS_MODULE, |
258 | .open = x25_seq_socket_open, | |
259 | .read = seq_read, | |
260 | .llseek = seq_lseek, | |
261 | .release = seq_release, | |
262 | }; | |
263 | ||
da7071d7 | 264 | static const struct file_operations x25_seq_route_fops = { |
1da177e4 LT |
265 | .owner = THIS_MODULE, |
266 | .open = x25_seq_route_open, | |
267 | .read = seq_read, | |
268 | .llseek = seq_lseek, | |
269 | .release = seq_release, | |
270 | }; | |
271 | ||
a1f6f5a7 | 272 | static const struct file_operations x25_seq_forward_fops = { |
c9c2e9dc AH |
273 | .owner = THIS_MODULE, |
274 | .open = x25_seq_forward_open, | |
275 | .read = seq_read, | |
276 | .llseek = seq_lseek, | |
277 | .release = seq_release, | |
278 | }; | |
279 | ||
1da177e4 LT |
280 | static struct proc_dir_entry *x25_proc_dir; |
281 | ||
282 | int __init x25_proc_init(void) | |
283 | { | |
284 | struct proc_dir_entry *p; | |
285 | int rc = -ENOMEM; | |
286 | ||
457c4cbc | 287 | x25_proc_dir = proc_mkdir("x25", init_net.proc_net); |
1da177e4 LT |
288 | if (!x25_proc_dir) |
289 | goto out; | |
290 | ||
2335f8ec | 291 | p = proc_create("route", S_IRUGO, x25_proc_dir, &x25_seq_route_fops); |
1da177e4 LT |
292 | if (!p) |
293 | goto out_route; | |
1da177e4 | 294 | |
2335f8ec | 295 | p = proc_create("socket", S_IRUGO, x25_proc_dir, &x25_seq_socket_fops); |
1da177e4 LT |
296 | if (!p) |
297 | goto out_socket; | |
c9c2e9dc | 298 | |
2335f8ec WC |
299 | p = proc_create("forward", S_IRUGO, x25_proc_dir, |
300 | &x25_seq_forward_fops); | |
c9c2e9dc AH |
301 | if (!p) |
302 | goto out_forward; | |
1da177e4 | 303 | rc = 0; |
c9c2e9dc | 304 | |
1da177e4 LT |
305 | out: |
306 | return rc; | |
c9c2e9dc AH |
307 | out_forward: |
308 | remove_proc_entry("socket", x25_proc_dir); | |
1da177e4 LT |
309 | out_socket: |
310 | remove_proc_entry("route", x25_proc_dir); | |
311 | out_route: | |
457c4cbc | 312 | remove_proc_entry("x25", init_net.proc_net); |
1da177e4 LT |
313 | goto out; |
314 | } | |
315 | ||
316 | void __exit x25_proc_exit(void) | |
317 | { | |
c9c2e9dc | 318 | remove_proc_entry("forward", x25_proc_dir); |
1da177e4 LT |
319 | remove_proc_entry("route", x25_proc_dir); |
320 | remove_proc_entry("socket", x25_proc_dir); | |
457c4cbc | 321 | remove_proc_entry("x25", init_net.proc_net); |
1da177e4 LT |
322 | } |
323 | ||
324 | #else /* CONFIG_PROC_FS */ | |
325 | ||
326 | int __init x25_proc_init(void) | |
327 | { | |
328 | return 0; | |
329 | } | |
330 | ||
331 | void __exit x25_proc_exit(void) | |
332 | { | |
333 | } | |
334 | #endif /* CONFIG_PROC_FS */ |