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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) | |
8 | * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) | |
9 | * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net) | |
10 | * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) | |
11 | */ | |
4fc268d2 | 12 | |
4fc268d2 | 13 | #include <linux/capability.h> |
1da177e4 LT |
14 | #include <linux/module.h> |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/types.h> | |
19 | #include <linux/socket.h> | |
20 | #include <linux/in.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
1da177e4 LT |
22 | #include <linux/kernel.h> |
23 | #include <linux/sched.h> | |
24 | #include <linux/spinlock.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/sockios.h> | |
28 | #include <linux/net.h> | |
29 | #include <linux/stat.h> | |
457c4cbc | 30 | #include <net/net_namespace.h> |
1da177e4 LT |
31 | #include <net/ax25.h> |
32 | #include <linux/inet.h> | |
33 | #include <linux/netdevice.h> | |
34 | #include <linux/if_arp.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <net/sock.h> | |
37 | #include <asm/system.h> | |
38 | #include <asm/uaccess.h> | |
39 | #include <linux/fcntl.h> | |
40 | #include <linux/termios.h> | |
41 | #include <linux/mm.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/notifier.h> | |
44 | #include <net/rose.h> | |
45 | #include <linux/proc_fs.h> | |
46 | #include <linux/seq_file.h> | |
c752f073 | 47 | #include <net/tcp_states.h> |
1da177e4 LT |
48 | #include <net/ip.h> |
49 | #include <net/arp.h> | |
50 | ||
51 | static int rose_ndevs = 10; | |
52 | ||
53 | int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; | |
54 | int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; | |
55 | int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; | |
56 | int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; | |
57 | int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; | |
58 | int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; | |
59 | int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; | |
60 | int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; | |
61 | int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; | |
62 | int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; | |
63 | ||
64 | static HLIST_HEAD(rose_list); | |
65 | static DEFINE_SPINLOCK(rose_list_lock); | |
66 | ||
5708e868 | 67 | static const struct proto_ops rose_proto_ops; |
1da177e4 LT |
68 | |
69 | ax25_address rose_callsign; | |
70 | ||
b1d21ca8 RB |
71 | /* |
72 | * ROSE network devices are virtual network devices encapsulating ROSE | |
73 | * frames into AX.25 which will be sent through an AX.25 device, so form a | |
74 | * special "super class" of normal net devices; split their locks off into a | |
75 | * separate class since they always nest. | |
76 | */ | |
77 | static struct lock_class_key rose_netdev_xmit_lock_key; | |
cf508b12 | 78 | static struct lock_class_key rose_netdev_addr_lock_key; |
b1d21ca8 | 79 | |
e8a0464c DM |
80 | static void rose_set_lockdep_one(struct net_device *dev, |
81 | struct netdev_queue *txq, | |
82 | void *_unused) | |
c773e847 DM |
83 | { |
84 | lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); | |
85 | } | |
86 | ||
87 | static void rose_set_lockdep_key(struct net_device *dev) | |
88 | { | |
cf508b12 | 89 | lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); |
e8a0464c | 90 | netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); |
c773e847 DM |
91 | } |
92 | ||
1da177e4 LT |
93 | /* |
94 | * Convert a ROSE address into text. | |
95 | */ | |
dcf777f6 | 96 | char *rose2asc(char *buf, const rose_address *addr) |
1da177e4 | 97 | { |
1da177e4 LT |
98 | if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && |
99 | addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && | |
100 | addr->rose_addr[4] == 0x00) { | |
dcf777f6 | 101 | strcpy(buf, "*"); |
1da177e4 | 102 | } else { |
dcf777f6 | 103 | sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, |
1da177e4 LT |
104 | addr->rose_addr[1] & 0xFF, |
105 | addr->rose_addr[2] & 0xFF, | |
106 | addr->rose_addr[3] & 0xFF, | |
107 | addr->rose_addr[4] & 0xFF); | |
108 | } | |
109 | ||
dcf777f6 | 110 | return buf; |
1da177e4 LT |
111 | } |
112 | ||
113 | /* | |
114 | * Compare two ROSE addresses, 0 == equal. | |
115 | */ | |
116 | int rosecmp(rose_address *addr1, rose_address *addr2) | |
117 | { | |
118 | int i; | |
119 | ||
120 | for (i = 0; i < 5; i++) | |
121 | if (addr1->rose_addr[i] != addr2->rose_addr[i]) | |
122 | return 1; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | /* | |
128 | * Compare two ROSE addresses for only mask digits, 0 == equal. | |
129 | */ | |
130 | int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) | |
131 | { | |
95b7d924 | 132 | unsigned int i, j; |
1da177e4 LT |
133 | |
134 | if (mask > 10) | |
135 | return 1; | |
136 | ||
137 | for (i = 0; i < mask; i++) { | |
138 | j = i / 2; | |
139 | ||
140 | if ((i % 2) != 0) { | |
141 | if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) | |
142 | return 1; | |
143 | } else { | |
144 | if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) | |
145 | return 1; | |
146 | } | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | /* | |
153 | * Socket removal during an interrupt is now safe. | |
154 | */ | |
155 | static void rose_remove_socket(struct sock *sk) | |
156 | { | |
157 | spin_lock_bh(&rose_list_lock); | |
158 | sk_del_node_init(sk); | |
159 | spin_unlock_bh(&rose_list_lock); | |
160 | } | |
161 | ||
162 | /* | |
163 | * Kill all bound sockets on a broken link layer connection to a | |
164 | * particular neighbour. | |
165 | */ | |
166 | void rose_kill_by_neigh(struct rose_neigh *neigh) | |
167 | { | |
168 | struct sock *s; | |
169 | struct hlist_node *node; | |
170 | ||
171 | spin_lock_bh(&rose_list_lock); | |
172 | sk_for_each(s, node, &rose_list) { | |
173 | struct rose_sock *rose = rose_sk(s); | |
174 | ||
175 | if (rose->neighbour == neigh) { | |
176 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
177 | rose->neighbour->use--; | |
178 | rose->neighbour = NULL; | |
179 | } | |
180 | } | |
181 | spin_unlock_bh(&rose_list_lock); | |
182 | } | |
183 | ||
184 | /* | |
185 | * Kill all bound sockets on a dropped device. | |
186 | */ | |
187 | static void rose_kill_by_device(struct net_device *dev) | |
188 | { | |
189 | struct sock *s; | |
190 | struct hlist_node *node; | |
191 | ||
192 | spin_lock_bh(&rose_list_lock); | |
193 | sk_for_each(s, node, &rose_list) { | |
194 | struct rose_sock *rose = rose_sk(s); | |
195 | ||
196 | if (rose->device == dev) { | |
197 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
198 | rose->neighbour->use--; | |
199 | rose->device = NULL; | |
200 | } | |
201 | } | |
202 | spin_unlock_bh(&rose_list_lock); | |
203 | } | |
204 | ||
205 | /* | |
206 | * Handle device status changes. | |
207 | */ | |
208 | static int rose_device_event(struct notifier_block *this, unsigned long event, | |
209 | void *ptr) | |
210 | { | |
211 | struct net_device *dev = (struct net_device *)ptr; | |
212 | ||
721499e8 | 213 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
214 | return NOTIFY_DONE; |
215 | ||
1da177e4 LT |
216 | if (event != NETDEV_DOWN) |
217 | return NOTIFY_DONE; | |
218 | ||
219 | switch (dev->type) { | |
220 | case ARPHRD_ROSE: | |
221 | rose_kill_by_device(dev); | |
222 | break; | |
223 | case ARPHRD_AX25: | |
224 | rose_link_device_down(dev); | |
225 | rose_rt_device_down(dev); | |
226 | break; | |
227 | } | |
228 | ||
229 | return NOTIFY_DONE; | |
230 | } | |
231 | ||
232 | /* | |
233 | * Add a socket to the bound sockets list. | |
234 | */ | |
235 | static void rose_insert_socket(struct sock *sk) | |
236 | { | |
237 | ||
238 | spin_lock_bh(&rose_list_lock); | |
239 | sk_add_node(sk, &rose_list); | |
240 | spin_unlock_bh(&rose_list_lock); | |
241 | } | |
242 | ||
243 | /* | |
244 | * Find a socket that wants to accept the Call Request we just | |
245 | * received. | |
246 | */ | |
247 | static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) | |
248 | { | |
249 | struct sock *s; | |
250 | struct hlist_node *node; | |
251 | ||
252 | spin_lock_bh(&rose_list_lock); | |
253 | sk_for_each(s, node, &rose_list) { | |
254 | struct rose_sock *rose = rose_sk(s); | |
255 | ||
256 | if (!rosecmp(&rose->source_addr, addr) && | |
257 | !ax25cmp(&rose->source_call, call) && | |
258 | !rose->source_ndigis && s->sk_state == TCP_LISTEN) | |
259 | goto found; | |
260 | } | |
261 | ||
262 | sk_for_each(s, node, &rose_list) { | |
263 | struct rose_sock *rose = rose_sk(s); | |
264 | ||
265 | if (!rosecmp(&rose->source_addr, addr) && | |
266 | !ax25cmp(&rose->source_call, &null_ax25_address) && | |
267 | s->sk_state == TCP_LISTEN) | |
268 | goto found; | |
269 | } | |
270 | s = NULL; | |
271 | found: | |
272 | spin_unlock_bh(&rose_list_lock); | |
273 | return s; | |
274 | } | |
275 | ||
276 | /* | |
277 | * Find a connected ROSE socket given my LCI and device. | |
278 | */ | |
279 | struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) | |
280 | { | |
281 | struct sock *s; | |
282 | struct hlist_node *node; | |
283 | ||
284 | spin_lock_bh(&rose_list_lock); | |
285 | sk_for_each(s, node, &rose_list) { | |
286 | struct rose_sock *rose = rose_sk(s); | |
287 | ||
288 | if (rose->lci == lci && rose->neighbour == neigh) | |
289 | goto found; | |
290 | } | |
291 | s = NULL; | |
292 | found: | |
293 | spin_unlock_bh(&rose_list_lock); | |
294 | return s; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Find a unique LCI for a given device. | |
299 | */ | |
300 | unsigned int rose_new_lci(struct rose_neigh *neigh) | |
301 | { | |
302 | int lci; | |
303 | ||
304 | if (neigh->dce_mode) { | |
305 | for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) | |
306 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
307 | return lci; | |
308 | } else { | |
309 | for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) | |
310 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
311 | return lci; | |
312 | } | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | /* | |
318 | * Deferred destroy. | |
319 | */ | |
320 | void rose_destroy_socket(struct sock *); | |
321 | ||
322 | /* | |
323 | * Handler for deferred kills. | |
324 | */ | |
325 | static void rose_destroy_timer(unsigned long data) | |
326 | { | |
327 | rose_destroy_socket((struct sock *)data); | |
328 | } | |
329 | ||
330 | /* | |
331 | * This is called from user mode and the timers. Thus it protects itself | |
332 | * against interrupt users but doesn't worry about being called during | |
333 | * work. Once it is removed from the queue no interrupt or bottom half | |
334 | * will touch it and we are (fairly 8-) ) safe. | |
335 | */ | |
336 | void rose_destroy_socket(struct sock *sk) | |
337 | { | |
338 | struct sk_buff *skb; | |
339 | ||
340 | rose_remove_socket(sk); | |
341 | rose_stop_heartbeat(sk); | |
342 | rose_stop_idletimer(sk); | |
343 | rose_stop_timer(sk); | |
344 | ||
345 | rose_clear_queues(sk); /* Flush the queues */ | |
346 | ||
347 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { | |
348 | if (skb->sk != sk) { /* A pending connection */ | |
349 | /* Queue the unaccepted socket for death */ | |
350 | sock_set_flag(skb->sk, SOCK_DEAD); | |
351 | rose_start_heartbeat(skb->sk); | |
352 | rose_sk(skb->sk)->state = ROSE_STATE_0; | |
353 | } | |
354 | ||
355 | kfree_skb(skb); | |
356 | } | |
357 | ||
c564039f | 358 | if (sk_has_allocations(sk)) { |
1da177e4 | 359 | /* Defer: outstanding buffers */ |
b24b8a24 PE |
360 | setup_timer(&sk->sk_timer, rose_destroy_timer, |
361 | (unsigned long)sk); | |
1da177e4 | 362 | sk->sk_timer.expires = jiffies + 10 * HZ; |
1da177e4 LT |
363 | add_timer(&sk->sk_timer); |
364 | } else | |
365 | sock_put(sk); | |
366 | } | |
367 | ||
368 | /* | |
369 | * Handling for system calls applied via the various interfaces to a | |
370 | * ROSE socket object. | |
371 | */ | |
372 | ||
373 | static int rose_setsockopt(struct socket *sock, int level, int optname, | |
b7058842 | 374 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
375 | { |
376 | struct sock *sk = sock->sk; | |
377 | struct rose_sock *rose = rose_sk(sk); | |
378 | int opt; | |
379 | ||
380 | if (level != SOL_ROSE) | |
381 | return -ENOPROTOOPT; | |
382 | ||
383 | if (optlen < sizeof(int)) | |
384 | return -EINVAL; | |
385 | ||
386 | if (get_user(opt, (int __user *)optval)) | |
387 | return -EFAULT; | |
388 | ||
389 | switch (optname) { | |
390 | case ROSE_DEFER: | |
391 | rose->defer = opt ? 1 : 0; | |
392 | return 0; | |
393 | ||
394 | case ROSE_T1: | |
395 | if (opt < 1) | |
396 | return -EINVAL; | |
397 | rose->t1 = opt * HZ; | |
398 | return 0; | |
399 | ||
400 | case ROSE_T2: | |
401 | if (opt < 1) | |
402 | return -EINVAL; | |
403 | rose->t2 = opt * HZ; | |
404 | return 0; | |
405 | ||
406 | case ROSE_T3: | |
407 | if (opt < 1) | |
408 | return -EINVAL; | |
409 | rose->t3 = opt * HZ; | |
410 | return 0; | |
411 | ||
412 | case ROSE_HOLDBACK: | |
413 | if (opt < 1) | |
414 | return -EINVAL; | |
415 | rose->hb = opt * HZ; | |
416 | return 0; | |
417 | ||
418 | case ROSE_IDLE: | |
419 | if (opt < 0) | |
420 | return -EINVAL; | |
421 | rose->idle = opt * 60 * HZ; | |
422 | return 0; | |
423 | ||
424 | case ROSE_QBITINCL: | |
425 | rose->qbitincl = opt ? 1 : 0; | |
426 | return 0; | |
427 | ||
428 | default: | |
429 | return -ENOPROTOOPT; | |
430 | } | |
431 | } | |
432 | ||
433 | static int rose_getsockopt(struct socket *sock, int level, int optname, | |
434 | char __user *optval, int __user *optlen) | |
435 | { | |
436 | struct sock *sk = sock->sk; | |
437 | struct rose_sock *rose = rose_sk(sk); | |
438 | int val = 0; | |
439 | int len; | |
440 | ||
441 | if (level != SOL_ROSE) | |
442 | return -ENOPROTOOPT; | |
443 | ||
444 | if (get_user(len, optlen)) | |
445 | return -EFAULT; | |
446 | ||
447 | if (len < 0) | |
448 | return -EINVAL; | |
449 | ||
450 | switch (optname) { | |
451 | case ROSE_DEFER: | |
452 | val = rose->defer; | |
453 | break; | |
454 | ||
455 | case ROSE_T1: | |
456 | val = rose->t1 / HZ; | |
457 | break; | |
458 | ||
459 | case ROSE_T2: | |
460 | val = rose->t2 / HZ; | |
461 | break; | |
462 | ||
463 | case ROSE_T3: | |
464 | val = rose->t3 / HZ; | |
465 | break; | |
466 | ||
467 | case ROSE_HOLDBACK: | |
468 | val = rose->hb / HZ; | |
469 | break; | |
470 | ||
471 | case ROSE_IDLE: | |
472 | val = rose->idle / (60 * HZ); | |
473 | break; | |
474 | ||
475 | case ROSE_QBITINCL: | |
476 | val = rose->qbitincl; | |
477 | break; | |
478 | ||
479 | default: | |
480 | return -ENOPROTOOPT; | |
481 | } | |
482 | ||
483 | len = min_t(unsigned int, len, sizeof(int)); | |
484 | ||
485 | if (put_user(len, optlen)) | |
486 | return -EFAULT; | |
487 | ||
488 | return copy_to_user(optval, &val, len) ? -EFAULT : 0; | |
489 | } | |
490 | ||
491 | static int rose_listen(struct socket *sock, int backlog) | |
492 | { | |
493 | struct sock *sk = sock->sk; | |
494 | ||
495 | if (sk->sk_state != TCP_LISTEN) { | |
496 | struct rose_sock *rose = rose_sk(sk); | |
497 | ||
498 | rose->dest_ndigis = 0; | |
499 | memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); | |
500 | memset(&rose->dest_call, 0, AX25_ADDR_LEN); | |
501 | memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); | |
502 | sk->sk_max_ack_backlog = backlog; | |
503 | sk->sk_state = TCP_LISTEN; | |
504 | return 0; | |
505 | } | |
506 | ||
507 | return -EOPNOTSUPP; | |
508 | } | |
509 | ||
510 | static struct proto rose_proto = { | |
511 | .name = "ROSE", | |
512 | .owner = THIS_MODULE, | |
513 | .obj_size = sizeof(struct rose_sock), | |
514 | }; | |
515 | ||
3f378b68 EP |
516 | static int rose_create(struct net *net, struct socket *sock, int protocol, |
517 | int kern) | |
1da177e4 LT |
518 | { |
519 | struct sock *sk; | |
520 | struct rose_sock *rose; | |
521 | ||
09ad9bc7 | 522 | if (!net_eq(net, &init_net)) |
1b8d7ae4 EB |
523 | return -EAFNOSUPPORT; |
524 | ||
1da177e4 LT |
525 | if (sock->type != SOCK_SEQPACKET || protocol != 0) |
526 | return -ESOCKTNOSUPPORT; | |
527 | ||
6257ff21 PE |
528 | sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto); |
529 | if (sk == NULL) | |
1da177e4 LT |
530 | return -ENOMEM; |
531 | ||
532 | rose = rose_sk(sk); | |
533 | ||
534 | sock_init_data(sock, sk); | |
535 | ||
536 | skb_queue_head_init(&rose->ack_queue); | |
537 | #ifdef M_BIT | |
538 | skb_queue_head_init(&rose->frag_queue); | |
539 | rose->fraglen = 0; | |
540 | #endif | |
541 | ||
542 | sock->ops = &rose_proto_ops; | |
543 | sk->sk_protocol = protocol; | |
544 | ||
545 | init_timer(&rose->timer); | |
546 | init_timer(&rose->idletimer); | |
547 | ||
82e84249 RB |
548 | rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); |
549 | rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); | |
550 | rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); | |
551 | rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); | |
552 | rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); | |
1da177e4 LT |
553 | |
554 | rose->state = ROSE_STATE_0; | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static struct sock *rose_make_new(struct sock *osk) | |
560 | { | |
561 | struct sock *sk; | |
562 | struct rose_sock *rose, *orose; | |
563 | ||
564 | if (osk->sk_type != SOCK_SEQPACKET) | |
565 | return NULL; | |
566 | ||
3b1e0a65 | 567 | sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto); |
6257ff21 | 568 | if (sk == NULL) |
1da177e4 LT |
569 | return NULL; |
570 | ||
571 | rose = rose_sk(sk); | |
572 | ||
573 | sock_init_data(NULL, sk); | |
574 | ||
575 | skb_queue_head_init(&rose->ack_queue); | |
576 | #ifdef M_BIT | |
577 | skb_queue_head_init(&rose->frag_queue); | |
578 | rose->fraglen = 0; | |
579 | #endif | |
580 | ||
581 | sk->sk_type = osk->sk_type; | |
1da177e4 LT |
582 | sk->sk_priority = osk->sk_priority; |
583 | sk->sk_protocol = osk->sk_protocol; | |
584 | sk->sk_rcvbuf = osk->sk_rcvbuf; | |
585 | sk->sk_sndbuf = osk->sk_sndbuf; | |
586 | sk->sk_state = TCP_ESTABLISHED; | |
53b924b3 | 587 | sock_copy_flags(sk, osk); |
1da177e4 LT |
588 | |
589 | init_timer(&rose->timer); | |
590 | init_timer(&rose->idletimer); | |
591 | ||
592 | orose = rose_sk(osk); | |
593 | rose->t1 = orose->t1; | |
594 | rose->t2 = orose->t2; | |
595 | rose->t3 = orose->t3; | |
596 | rose->hb = orose->hb; | |
597 | rose->idle = orose->idle; | |
598 | rose->defer = orose->defer; | |
599 | rose->device = orose->device; | |
600 | rose->qbitincl = orose->qbitincl; | |
601 | ||
602 | return sk; | |
603 | } | |
604 | ||
605 | static int rose_release(struct socket *sock) | |
606 | { | |
607 | struct sock *sk = sock->sk; | |
608 | struct rose_sock *rose; | |
609 | ||
610 | if (sk == NULL) return 0; | |
611 | ||
4965291a JP |
612 | sock_hold(sk); |
613 | sock_orphan(sk); | |
614 | lock_sock(sk); | |
1da177e4 LT |
615 | rose = rose_sk(sk); |
616 | ||
617 | switch (rose->state) { | |
618 | case ROSE_STATE_0: | |
4965291a | 619 | release_sock(sk); |
1da177e4 | 620 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 621 | lock_sock(sk); |
1da177e4 LT |
622 | rose_destroy_socket(sk); |
623 | break; | |
624 | ||
625 | case ROSE_STATE_2: | |
626 | rose->neighbour->use--; | |
4965291a | 627 | release_sock(sk); |
1da177e4 | 628 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 629 | lock_sock(sk); |
1da177e4 LT |
630 | rose_destroy_socket(sk); |
631 | break; | |
632 | ||
633 | case ROSE_STATE_1: | |
634 | case ROSE_STATE_3: | |
635 | case ROSE_STATE_4: | |
636 | case ROSE_STATE_5: | |
637 | rose_clear_queues(sk); | |
638 | rose_stop_idletimer(sk); | |
639 | rose_write_internal(sk, ROSE_CLEAR_REQUEST); | |
640 | rose_start_t3timer(sk); | |
641 | rose->state = ROSE_STATE_2; | |
642 | sk->sk_state = TCP_CLOSE; | |
643 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
644 | sk->sk_state_change(sk); | |
645 | sock_set_flag(sk, SOCK_DEAD); | |
646 | sock_set_flag(sk, SOCK_DESTROY); | |
647 | break; | |
648 | ||
649 | default: | |
650 | break; | |
651 | } | |
652 | ||
653 | sock->sk = NULL; | |
4965291a JP |
654 | release_sock(sk); |
655 | sock_put(sk); | |
1da177e4 LT |
656 | |
657 | return 0; | |
658 | } | |
659 | ||
660 | static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
661 | { | |
662 | struct sock *sk = sock->sk; | |
663 | struct rose_sock *rose = rose_sk(sk); | |
664 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
665 | struct net_device *dev; | |
01d7dd0e RB |
666 | ax25_address *source; |
667 | ax25_uid_assoc *user; | |
1da177e4 LT |
668 | int n; |
669 | ||
670 | if (!sock_flag(sk, SOCK_ZAPPED)) | |
671 | return -EINVAL; | |
672 | ||
673 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
674 | return -EINVAL; | |
675 | ||
676 | if (addr->srose_family != AF_ROSE) | |
677 | return -EINVAL; | |
678 | ||
679 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
680 | return -EINVAL; | |
681 | ||
9828e6e6 | 682 | if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) |
1da177e4 LT |
683 | return -EINVAL; |
684 | ||
685 | if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) { | |
686 | SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n"); | |
687 | return -EADDRNOTAVAIL; | |
688 | } | |
689 | ||
690 | source = &addr->srose_call; | |
691 | ||
c2a2b8d3 | 692 | user = ax25_findbyuid(current_euid()); |
01d7dd0e RB |
693 | if (user) { |
694 | rose->source_call = user->call; | |
695 | ax25_uid_put(user); | |
696 | } else { | |
1da177e4 LT |
697 | if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) |
698 | return -EACCES; | |
01d7dd0e | 699 | rose->source_call = *source; |
1da177e4 LT |
700 | } |
701 | ||
702 | rose->source_addr = addr->srose_addr; | |
1da177e4 LT |
703 | rose->device = dev; |
704 | rose->source_ndigis = addr->srose_ndigis; | |
705 | ||
706 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
707 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
708 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
709 | rose->source_digis[n] = full_addr->srose_digis[n]; | |
710 | } else { | |
711 | if (rose->source_ndigis == 1) { | |
712 | rose->source_digis[0] = addr->srose_digi; | |
713 | } | |
714 | } | |
715 | ||
716 | rose_insert_socket(sk); | |
717 | ||
718 | sock_reset_flag(sk, SOCK_ZAPPED); | |
719 | SOCK_DEBUG(sk, "ROSE: socket is bound\n"); | |
720 | return 0; | |
721 | } | |
722 | ||
723 | static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) | |
724 | { | |
725 | struct sock *sk = sock->sk; | |
726 | struct rose_sock *rose = rose_sk(sk); | |
727 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
728 | unsigned char cause, diagnostic; | |
1da177e4 | 729 | struct net_device *dev; |
01d7dd0e | 730 | ax25_uid_assoc *user; |
2536b94a | 731 | int n, err = 0; |
1da177e4 LT |
732 | |
733 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
734 | return -EINVAL; | |
735 | ||
736 | if (addr->srose_family != AF_ROSE) | |
737 | return -EINVAL; | |
738 | ||
739 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
740 | return -EINVAL; | |
741 | ||
9828e6e6 | 742 | if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS) |
1da177e4 LT |
743 | return -EINVAL; |
744 | ||
745 | /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ | |
746 | if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) | |
747 | return -EINVAL; | |
748 | ||
2536b94a RB |
749 | lock_sock(sk); |
750 | ||
751 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
752 | /* Connect completed during a ERESTARTSYS event */ | |
753 | sock->state = SS_CONNECTED; | |
754 | goto out_release; | |
755 | } | |
756 | ||
757 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
758 | sock->state = SS_UNCONNECTED; | |
759 | err = -ECONNREFUSED; | |
760 | goto out_release; | |
761 | } | |
762 | ||
763 | if (sk->sk_state == TCP_ESTABLISHED) { | |
764 | /* No reconnect on a seqpacket socket */ | |
765 | err = -EISCONN; | |
766 | goto out_release; | |
767 | } | |
768 | ||
769 | sk->sk_state = TCP_CLOSE; | |
770 | sock->state = SS_UNCONNECTED; | |
771 | ||
1da177e4 | 772 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, |
fe2c802a | 773 | &diagnostic, 0); |
43837b1e BP |
774 | if (!rose->neighbour) { |
775 | err = -ENETUNREACH; | |
776 | goto out_release; | |
777 | } | |
1da177e4 LT |
778 | |
779 | rose->lci = rose_new_lci(rose->neighbour); | |
2536b94a RB |
780 | if (!rose->lci) { |
781 | err = -ENETUNREACH; | |
782 | goto out_release; | |
783 | } | |
1da177e4 LT |
784 | |
785 | if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ | |
786 | sock_reset_flag(sk, SOCK_ZAPPED); | |
787 | ||
2536b94a RB |
788 | if ((dev = rose_dev_first()) == NULL) { |
789 | err = -ENETUNREACH; | |
790 | goto out_release; | |
791 | } | |
1da177e4 | 792 | |
c2a2b8d3 | 793 | user = ax25_findbyuid(current_euid()); |
2536b94a RB |
794 | if (!user) { |
795 | err = -EINVAL; | |
796 | goto out_release; | |
797 | } | |
1da177e4 LT |
798 | |
799 | memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); | |
01d7dd0e | 800 | rose->source_call = user->call; |
1da177e4 | 801 | rose->device = dev; |
01d7dd0e | 802 | ax25_uid_put(user); |
1da177e4 LT |
803 | |
804 | rose_insert_socket(sk); /* Finish the bind */ | |
805 | } | |
1da177e4 LT |
806 | rose->dest_addr = addr->srose_addr; |
807 | rose->dest_call = addr->srose_call; | |
808 | rose->rand = ((long)rose & 0xFFFF) + rose->lci; | |
809 | rose->dest_ndigis = addr->srose_ndigis; | |
810 | ||
811 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
812 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
813 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
814 | rose->dest_digis[n] = full_addr->srose_digis[n]; | |
815 | } else { | |
816 | if (rose->dest_ndigis == 1) { | |
817 | rose->dest_digis[0] = addr->srose_digi; | |
818 | } | |
819 | } | |
820 | ||
821 | /* Move to connecting socket, start sending Connect Requests */ | |
822 | sock->state = SS_CONNECTING; | |
823 | sk->sk_state = TCP_SYN_SENT; | |
824 | ||
825 | rose->state = ROSE_STATE_1; | |
826 | ||
827 | rose->neighbour->use++; | |
828 | ||
829 | rose_write_internal(sk, ROSE_CALL_REQUEST); | |
830 | rose_start_heartbeat(sk); | |
831 | rose_start_t1timer(sk); | |
832 | ||
833 | /* Now the loop */ | |
2536b94a RB |
834 | if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { |
835 | err = -EINPROGRESS; | |
836 | goto out_release; | |
837 | } | |
1da177e4 LT |
838 | |
839 | /* | |
840 | * A Connect Ack with Choke or timeout or failed routing will go to | |
841 | * closed. | |
842 | */ | |
843 | if (sk->sk_state == TCP_SYN_SENT) { | |
75606dc6 | 844 | DEFINE_WAIT(wait); |
1da177e4 | 845 | |
1da177e4 | 846 | for (;;) { |
aa395145 | 847 | prepare_to_wait(sk_sleep(sk), &wait, |
6140efb5 | 848 | TASK_INTERRUPTIBLE); |
1da177e4 LT |
849 | if (sk->sk_state != TCP_SYN_SENT) |
850 | break; | |
75606dc6 RB |
851 | if (!signal_pending(current)) { |
852 | release_sock(sk); | |
1da177e4 | 853 | schedule(); |
2536b94a | 854 | lock_sock(sk); |
1da177e4 LT |
855 | continue; |
856 | } | |
75606dc6 RB |
857 | err = -ERESTARTSYS; |
858 | break; | |
1da177e4 | 859 | } |
aa395145 | 860 | finish_wait(sk_sleep(sk), &wait); |
75606dc6 RB |
861 | |
862 | if (err) | |
863 | goto out_release; | |
1da177e4 LT |
864 | } |
865 | ||
866 | if (sk->sk_state != TCP_ESTABLISHED) { | |
867 | sock->state = SS_UNCONNECTED; | |
2536b94a RB |
868 | err = sock_error(sk); /* Always set at this point */ |
869 | goto out_release; | |
1da177e4 LT |
870 | } |
871 | ||
872 | sock->state = SS_CONNECTED; | |
873 | ||
2536b94a RB |
874 | out_release: |
875 | release_sock(sk); | |
876 | ||
877 | return err; | |
1da177e4 LT |
878 | } |
879 | ||
880 | static int rose_accept(struct socket *sock, struct socket *newsock, int flags) | |
881 | { | |
1da177e4 LT |
882 | struct sk_buff *skb; |
883 | struct sock *newsk; | |
75606dc6 | 884 | DEFINE_WAIT(wait); |
1da177e4 LT |
885 | struct sock *sk; |
886 | int err = 0; | |
887 | ||
888 | if ((sk = sock->sk) == NULL) | |
889 | return -EINVAL; | |
890 | ||
891 | lock_sock(sk); | |
892 | if (sk->sk_type != SOCK_SEQPACKET) { | |
893 | err = -EOPNOTSUPP; | |
75606dc6 | 894 | goto out_release; |
1da177e4 LT |
895 | } |
896 | ||
897 | if (sk->sk_state != TCP_LISTEN) { | |
898 | err = -EINVAL; | |
75606dc6 | 899 | goto out_release; |
1da177e4 LT |
900 | } |
901 | ||
902 | /* | |
903 | * The write queue this time is holding sockets ready to use | |
904 | * hooked into the SABM we saved | |
905 | */ | |
1da177e4 | 906 | for (;;) { |
aa395145 | 907 | prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
75606dc6 | 908 | |
1da177e4 LT |
909 | skb = skb_dequeue(&sk->sk_receive_queue); |
910 | if (skb) | |
911 | break; | |
912 | ||
1da177e4 | 913 | if (flags & O_NONBLOCK) { |
75606dc6 RB |
914 | err = -EWOULDBLOCK; |
915 | break; | |
1da177e4 | 916 | } |
75606dc6 RB |
917 | if (!signal_pending(current)) { |
918 | release_sock(sk); | |
1da177e4 LT |
919 | schedule(); |
920 | lock_sock(sk); | |
921 | continue; | |
922 | } | |
75606dc6 RB |
923 | err = -ERESTARTSYS; |
924 | break; | |
1da177e4 | 925 | } |
aa395145 | 926 | finish_wait(sk_sleep(sk), &wait); |
75606dc6 RB |
927 | if (err) |
928 | goto out_release; | |
1da177e4 LT |
929 | |
930 | newsk = skb->sk; | |
44ccff1f | 931 | sock_graft(newsk, newsock); |
1da177e4 LT |
932 | |
933 | /* Now attach up the new socket */ | |
934 | skb->sk = NULL; | |
935 | kfree_skb(skb); | |
936 | sk->sk_ack_backlog--; | |
1da177e4 | 937 | |
75606dc6 | 938 | out_release: |
1da177e4 LT |
939 | release_sock(sk); |
940 | ||
941 | return err; | |
942 | } | |
943 | ||
944 | static int rose_getname(struct socket *sock, struct sockaddr *uaddr, | |
945 | int *uaddr_len, int peer) | |
946 | { | |
947 | struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; | |
948 | struct sock *sk = sock->sk; | |
949 | struct rose_sock *rose = rose_sk(sk); | |
950 | int n; | |
951 | ||
17ac2e9c | 952 | memset(srose, 0, sizeof(*srose)); |
1da177e4 LT |
953 | if (peer != 0) { |
954 | if (sk->sk_state != TCP_ESTABLISHED) | |
955 | return -ENOTCONN; | |
956 | srose->srose_family = AF_ROSE; | |
957 | srose->srose_addr = rose->dest_addr; | |
958 | srose->srose_call = rose->dest_call; | |
959 | srose->srose_ndigis = rose->dest_ndigis; | |
960 | for (n = 0; n < rose->dest_ndigis; n++) | |
961 | srose->srose_digis[n] = rose->dest_digis[n]; | |
962 | } else { | |
963 | srose->srose_family = AF_ROSE; | |
964 | srose->srose_addr = rose->source_addr; | |
965 | srose->srose_call = rose->source_call; | |
966 | srose->srose_ndigis = rose->source_ndigis; | |
967 | for (n = 0; n < rose->source_ndigis; n++) | |
968 | srose->srose_digis[n] = rose->source_digis[n]; | |
969 | } | |
970 | ||
971 | *uaddr_len = sizeof(struct full_sockaddr_rose); | |
972 | return 0; | |
973 | } | |
974 | ||
975 | int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) | |
976 | { | |
977 | struct sock *sk; | |
978 | struct sock *make; | |
979 | struct rose_sock *make_rose; | |
980 | struct rose_facilities_struct facilities; | |
981 | int n, len; | |
982 | ||
983 | skb->sk = NULL; /* Initially we don't know who it's for */ | |
984 | ||
985 | /* | |
986 | * skb->data points to the rose frame start | |
987 | */ | |
988 | memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); | |
989 | ||
95b7d924 ED |
990 | len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1; |
991 | len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1; | |
1da177e4 LT |
992 | if (!rose_parse_facilities(skb->data + len + 4, &facilities)) { |
993 | rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); | |
994 | return 0; | |
995 | } | |
996 | ||
997 | sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); | |
998 | ||
999 | /* | |
1000 | * We can't accept the Call Request. | |
1001 | */ | |
1002 | if (sk == NULL || sk_acceptq_is_full(sk) || | |
1003 | (make = rose_make_new(sk)) == NULL) { | |
1004 | rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | skb->sk = make; | |
1009 | make->sk_state = TCP_ESTABLISHED; | |
1010 | make_rose = rose_sk(make); | |
1011 | ||
1012 | make_rose->lci = lci; | |
1013 | make_rose->dest_addr = facilities.dest_addr; | |
1014 | make_rose->dest_call = facilities.dest_call; | |
1015 | make_rose->dest_ndigis = facilities.dest_ndigis; | |
1016 | for (n = 0 ; n < facilities.dest_ndigis ; n++) | |
1017 | make_rose->dest_digis[n] = facilities.dest_digis[n]; | |
1018 | make_rose->source_addr = facilities.source_addr; | |
1019 | make_rose->source_call = facilities.source_call; | |
1020 | make_rose->source_ndigis = facilities.source_ndigis; | |
1021 | for (n = 0 ; n < facilities.source_ndigis ; n++) | |
1022 | make_rose->source_digis[n]= facilities.source_digis[n]; | |
1023 | make_rose->neighbour = neigh; | |
1024 | make_rose->device = dev; | |
1025 | make_rose->facilities = facilities; | |
1026 | ||
1027 | make_rose->neighbour->use++; | |
1028 | ||
1029 | if (rose_sk(sk)->defer) { | |
1030 | make_rose->state = ROSE_STATE_5; | |
1031 | } else { | |
1032 | rose_write_internal(make, ROSE_CALL_ACCEPTED); | |
1033 | make_rose->state = ROSE_STATE_3; | |
1034 | rose_start_idletimer(make); | |
1035 | } | |
1036 | ||
1037 | make_rose->condition = 0x00; | |
1038 | make_rose->vs = 0; | |
1039 | make_rose->va = 0; | |
1040 | make_rose->vr = 0; | |
1041 | make_rose->vl = 0; | |
1042 | sk->sk_ack_backlog++; | |
1043 | ||
1044 | rose_insert_socket(make); | |
1045 | ||
1046 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1047 | ||
1048 | rose_start_heartbeat(make); | |
1049 | ||
1050 | if (!sock_flag(sk, SOCK_DEAD)) | |
1051 | sk->sk_data_ready(sk, skb->len); | |
1052 | ||
1053 | return 1; | |
1054 | } | |
1055 | ||
1056 | static int rose_sendmsg(struct kiocb *iocb, struct socket *sock, | |
1057 | struct msghdr *msg, size_t len) | |
1058 | { | |
1059 | struct sock *sk = sock->sk; | |
1060 | struct rose_sock *rose = rose_sk(sk); | |
1061 | struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name; | |
1062 | int err; | |
1063 | struct full_sockaddr_rose srose; | |
1064 | struct sk_buff *skb; | |
1065 | unsigned char *asmptr; | |
1066 | int n, size, qbit = 0; | |
1067 | ||
1068 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | if (sock_flag(sk, SOCK_ZAPPED)) | |
1072 | return -EADDRNOTAVAIL; | |
1073 | ||
1074 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1075 | send_sig(SIGPIPE, current, 0); | |
1076 | return -EPIPE; | |
1077 | } | |
1078 | ||
1079 | if (rose->neighbour == NULL || rose->device == NULL) | |
1080 | return -ENETUNREACH; | |
1081 | ||
1082 | if (usrose != NULL) { | |
1083 | if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) | |
1084 | return -EINVAL; | |
1085 | memset(&srose, 0, sizeof(struct full_sockaddr_rose)); | |
1086 | memcpy(&srose, usrose, msg->msg_namelen); | |
1087 | if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || | |
1088 | ax25cmp(&rose->dest_call, &srose.srose_call) != 0) | |
1089 | return -EISCONN; | |
1090 | if (srose.srose_ndigis != rose->dest_ndigis) | |
1091 | return -EISCONN; | |
1092 | if (srose.srose_ndigis == rose->dest_ndigis) { | |
1093 | for (n = 0 ; n < srose.srose_ndigis ; n++) | |
1094 | if (ax25cmp(&rose->dest_digis[n], | |
1095 | &srose.srose_digis[n])) | |
1096 | return -EISCONN; | |
1097 | } | |
1098 | if (srose.srose_family != AF_ROSE) | |
1099 | return -EINVAL; | |
1100 | } else { | |
1101 | if (sk->sk_state != TCP_ESTABLISHED) | |
1102 | return -ENOTCONN; | |
1103 | ||
1104 | srose.srose_family = AF_ROSE; | |
1105 | srose.srose_addr = rose->dest_addr; | |
1106 | srose.srose_call = rose->dest_call; | |
1107 | srose.srose_ndigis = rose->dest_ndigis; | |
1108 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1109 | srose.srose_digis[n] = rose->dest_digis[n]; | |
1110 | } | |
1111 | ||
1112 | SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n"); | |
1113 | ||
1114 | /* Build a packet */ | |
1115 | SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n"); | |
83e0bbcb AC |
1116 | /* Sanity check the packet size */ |
1117 | if (len > 65535) | |
1118 | return -EMSGSIZE; | |
1119 | ||
1da177e4 LT |
1120 | size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; |
1121 | ||
1122 | if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) | |
1123 | return err; | |
1124 | ||
1125 | skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); | |
1126 | ||
1127 | /* | |
1128 | * Put the data on the end | |
1129 | */ | |
1130 | SOCK_DEBUG(sk, "ROSE: Appending user data\n"); | |
1131 | ||
eeeb0374 ACM |
1132 | skb_reset_transport_header(skb); |
1133 | skb_put(skb, len); | |
1da177e4 | 1134 | |
eeeb0374 | 1135 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); |
1da177e4 LT |
1136 | if (err) { |
1137 | kfree_skb(skb); | |
1138 | return err; | |
1139 | } | |
1140 | ||
1141 | /* | |
1142 | * If the Q BIT Include socket option is in force, the first | |
1143 | * byte of the user data is the logical value of the Q Bit. | |
1144 | */ | |
1145 | if (rose->qbitincl) { | |
1146 | qbit = skb->data[0]; | |
1147 | skb_pull(skb, 1); | |
1148 | } | |
1149 | ||
1150 | /* | |
1151 | * Push down the ROSE header | |
1152 | */ | |
1153 | asmptr = skb_push(skb, ROSE_MIN_LEN); | |
1154 | ||
1155 | SOCK_DEBUG(sk, "ROSE: Building Network Header.\n"); | |
1156 | ||
1157 | /* Build a ROSE Network header */ | |
1158 | asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; | |
1159 | asmptr[1] = (rose->lci >> 0) & 0xFF; | |
1160 | asmptr[2] = ROSE_DATA; | |
1161 | ||
1162 | if (qbit) | |
1163 | asmptr[0] |= ROSE_Q_BIT; | |
1164 | ||
1165 | SOCK_DEBUG(sk, "ROSE: Built header.\n"); | |
1166 | ||
1167 | SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n"); | |
1168 | ||
1169 | if (sk->sk_state != TCP_ESTABLISHED) { | |
1170 | kfree_skb(skb); | |
1171 | return -ENOTCONN; | |
1172 | } | |
1173 | ||
1174 | #ifdef M_BIT | |
1175 | #define ROSE_PACLEN (256-ROSE_MIN_LEN) | |
1176 | if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { | |
1177 | unsigned char header[ROSE_MIN_LEN]; | |
1178 | struct sk_buff *skbn; | |
1179 | int frontlen; | |
1180 | int lg; | |
1181 | ||
1182 | /* Save a copy of the Header */ | |
d626f62b | 1183 | skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); |
1da177e4 LT |
1184 | skb_pull(skb, ROSE_MIN_LEN); |
1185 | ||
1186 | frontlen = skb_headroom(skb); | |
1187 | ||
1188 | while (skb->len > 0) { | |
1189 | if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { | |
1190 | kfree_skb(skb); | |
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | skbn->sk = sk; | |
1195 | skbn->free = 1; | |
1196 | skbn->arp = 1; | |
1197 | ||
1198 | skb_reserve(skbn, frontlen); | |
1199 | ||
1200 | lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; | |
1201 | ||
1202 | /* Copy the user data */ | |
d626f62b | 1203 | skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); |
1da177e4 LT |
1204 | skb_pull(skb, lg); |
1205 | ||
1206 | /* Duplicate the Header */ | |
1207 | skb_push(skbn, ROSE_MIN_LEN); | |
27d7ff46 | 1208 | skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); |
1da177e4 LT |
1209 | |
1210 | if (skb->len > 0) | |
1211 | skbn->data[2] |= M_BIT; | |
1212 | ||
1213 | skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ | |
1214 | } | |
1215 | ||
1216 | skb->free = 1; | |
1217 | kfree_skb(skb); | |
1218 | } else { | |
1219 | skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ | |
1220 | } | |
1221 | #else | |
1222 | skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ | |
1223 | #endif | |
1224 | ||
1225 | rose_kick(sk); | |
1226 | ||
1227 | return len; | |
1228 | } | |
1229 | ||
1230 | ||
1231 | static int rose_recvmsg(struct kiocb *iocb, struct socket *sock, | |
1232 | struct msghdr *msg, size_t size, int flags) | |
1233 | { | |
1234 | struct sock *sk = sock->sk; | |
1235 | struct rose_sock *rose = rose_sk(sk); | |
1236 | struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name; | |
1237 | size_t copied; | |
1238 | unsigned char *asmptr; | |
1239 | struct sk_buff *skb; | |
1240 | int n, er, qbit; | |
1241 | ||
1242 | /* | |
1243 | * This works for seqpacket too. The receiver has ordered the queue for | |
1244 | * us! We do one quick check first though | |
1245 | */ | |
1246 | if (sk->sk_state != TCP_ESTABLISHED) | |
1247 | return -ENOTCONN; | |
1248 | ||
1249 | /* Now we can treat all alike */ | |
1250 | if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) | |
1251 | return er; | |
1252 | ||
1253 | qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; | |
1254 | ||
1255 | skb_pull(skb, ROSE_MIN_LEN); | |
1256 | ||
1257 | if (rose->qbitincl) { | |
1258 | asmptr = skb_push(skb, 1); | |
1259 | *asmptr = qbit; | |
1260 | } | |
1261 | ||
badff6d0 | 1262 | skb_reset_transport_header(skb); |
1da177e4 LT |
1263 | copied = skb->len; |
1264 | ||
1265 | if (copied > size) { | |
1266 | copied = size; | |
1267 | msg->msg_flags |= MSG_TRUNC; | |
1268 | } | |
1269 | ||
1270 | skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
1271 | ||
1272 | if (srose != NULL) { | |
1273 | srose->srose_family = AF_ROSE; | |
1274 | srose->srose_addr = rose->dest_addr; | |
1275 | srose->srose_call = rose->dest_call; | |
1276 | srose->srose_ndigis = rose->dest_ndigis; | |
1277 | if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) { | |
1278 | struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name; | |
1279 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1280 | full_srose->srose_digis[n] = rose->dest_digis[n]; | |
1281 | msg->msg_namelen = sizeof(struct full_sockaddr_rose); | |
1282 | } else { | |
1283 | if (rose->dest_ndigis >= 1) { | |
1284 | srose->srose_ndigis = 1; | |
1285 | srose->srose_digi = rose->dest_digis[0]; | |
1286 | } | |
1287 | msg->msg_namelen = sizeof(struct sockaddr_rose); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | skb_free_datagram(sk, skb); | |
1292 | ||
1293 | return copied; | |
1294 | } | |
1295 | ||
1296 | ||
1297 | static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1298 | { | |
1299 | struct sock *sk = sock->sk; | |
1300 | struct rose_sock *rose = rose_sk(sk); | |
1301 | void __user *argp = (void __user *)arg; | |
1302 | ||
1303 | switch (cmd) { | |
1304 | case TIOCOUTQ: { | |
1305 | long amount; | |
31e6d363 ED |
1306 | |
1307 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); | |
1da177e4 LT |
1308 | if (amount < 0) |
1309 | amount = 0; | |
20b7d10a | 1310 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1311 | } |
1312 | ||
1313 | case TIOCINQ: { | |
1314 | struct sk_buff *skb; | |
1315 | long amount = 0L; | |
1316 | /* These two are safe on a single CPU system as only user tasks fiddle here */ | |
1317 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) | |
1318 | amount = skb->len; | |
20b7d10a | 1319 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1320 | } |
1321 | ||
1322 | case SIOCGSTAMP: | |
20b7d10a | 1323 | return sock_get_timestamp(sk, (struct timeval __user *) argp); |
1da177e4 | 1324 | |
ae40eb1e ED |
1325 | case SIOCGSTAMPNS: |
1326 | return sock_get_timestampns(sk, (struct timespec __user *) argp); | |
1327 | ||
1da177e4 LT |
1328 | case SIOCGIFADDR: |
1329 | case SIOCSIFADDR: | |
1330 | case SIOCGIFDSTADDR: | |
1331 | case SIOCSIFDSTADDR: | |
1332 | case SIOCGIFBRDADDR: | |
1333 | case SIOCSIFBRDADDR: | |
1334 | case SIOCGIFNETMASK: | |
1335 | case SIOCSIFNETMASK: | |
1336 | case SIOCGIFMETRIC: | |
1337 | case SIOCSIFMETRIC: | |
1338 | return -EINVAL; | |
1339 | ||
1340 | case SIOCADDRT: | |
1341 | case SIOCDELRT: | |
1342 | case SIOCRSCLRRT: | |
1343 | if (!capable(CAP_NET_ADMIN)) | |
1344 | return -EPERM; | |
1345 | return rose_rt_ioctl(cmd, argp); | |
1346 | ||
1347 | case SIOCRSGCAUSE: { | |
1348 | struct rose_cause_struct rose_cause; | |
1349 | rose_cause.cause = rose->cause; | |
1350 | rose_cause.diagnostic = rose->diagnostic; | |
1351 | return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; | |
1352 | } | |
1353 | ||
1354 | case SIOCRSSCAUSE: { | |
1355 | struct rose_cause_struct rose_cause; | |
1356 | if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) | |
1357 | return -EFAULT; | |
1358 | rose->cause = rose_cause.cause; | |
1359 | rose->diagnostic = rose_cause.diagnostic; | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | case SIOCRSSL2CALL: | |
1364 | if (!capable(CAP_NET_ADMIN)) return -EPERM; | |
1365 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1366 | ax25_listen_release(&rose_callsign, NULL); | |
1367 | if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) | |
1368 | return -EFAULT; | |
1369 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
81dcd169 RB |
1370 | return ax25_listen_register(&rose_callsign, NULL); |
1371 | ||
1da177e4 LT |
1372 | return 0; |
1373 | ||
1374 | case SIOCRSGL2CALL: | |
1375 | return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; | |
1376 | ||
1377 | case SIOCRSACCEPT: | |
1378 | if (rose->state == ROSE_STATE_5) { | |
1379 | rose_write_internal(sk, ROSE_CALL_ACCEPTED); | |
1380 | rose_start_idletimer(sk); | |
1381 | rose->condition = 0x00; | |
1382 | rose->vs = 0; | |
1383 | rose->va = 0; | |
1384 | rose->vr = 0; | |
1385 | rose->vl = 0; | |
1386 | rose->state = ROSE_STATE_3; | |
1387 | } | |
1388 | return 0; | |
1389 | ||
1390 | default: | |
b5e5fa5e | 1391 | return -ENOIOCTLCMD; |
1da177e4 LT |
1392 | } |
1393 | ||
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | #ifdef CONFIG_PROC_FS | |
1398 | static void *rose_info_start(struct seq_file *seq, loff_t *pos) | |
95b7d924 | 1399 | __acquires(rose_list_lock) |
1da177e4 | 1400 | { |
1da177e4 | 1401 | spin_lock_bh(&rose_list_lock); |
b999748a | 1402 | return seq_hlist_start_head(&rose_list, *pos); |
1da177e4 LT |
1403 | } |
1404 | ||
1405 | static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) | |
1406 | { | |
b999748a | 1407 | return seq_hlist_next(v, &rose_list, pos); |
1da177e4 | 1408 | } |
3dcf7c5e | 1409 | |
1da177e4 | 1410 | static void rose_info_stop(struct seq_file *seq, void *v) |
95b7d924 | 1411 | __releases(rose_list_lock) |
1da177e4 LT |
1412 | { |
1413 | spin_unlock_bh(&rose_list_lock); | |
1414 | } | |
1415 | ||
1416 | static int rose_info_show(struct seq_file *seq, void *v) | |
1417 | { | |
dcf777f6 | 1418 | char buf[11], rsbuf[11]; |
f75268cd | 1419 | |
1da177e4 | 1420 | if (v == SEQ_START_TOKEN) |
3dcf7c5e | 1421 | seq_puts(seq, |
1da177e4 LT |
1422 | "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n"); |
1423 | ||
1424 | else { | |
b999748a | 1425 | struct sock *s = sk_entry(v); |
1da177e4 LT |
1426 | struct rose_sock *rose = rose_sk(s); |
1427 | const char *devname, *callsign; | |
1428 | const struct net_device *dev = rose->device; | |
1429 | ||
1430 | if (!dev) | |
1431 | devname = "???"; | |
1432 | else | |
1433 | devname = dev->name; | |
3dcf7c5e | 1434 | |
1da177e4 | 1435 | seq_printf(seq, "%-10s %-9s ", |
dcf777f6 RB |
1436 | rose2asc(rsbuf, &rose->dest_addr), |
1437 | ax2asc(buf, &rose->dest_call)); | |
1da177e4 LT |
1438 | |
1439 | if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) | |
1440 | callsign = "??????-?"; | |
1441 | else | |
f75268cd | 1442 | callsign = ax2asc(buf, &rose->source_call); |
1da177e4 LT |
1443 | |
1444 | seq_printf(seq, | |
1445 | "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", | |
dcf777f6 | 1446 | rose2asc(rsbuf, &rose->source_addr), |
1da177e4 LT |
1447 | callsign, |
1448 | devname, | |
1449 | rose->lci & 0x0FFF, | |
1450 | (rose->neighbour) ? rose->neighbour->number : 0, | |
1451 | rose->state, | |
1452 | rose->vs, | |
1453 | rose->vr, | |
1454 | rose->va, | |
1455 | ax25_display_timer(&rose->timer) / HZ, | |
1456 | rose->t1 / HZ, | |
1457 | rose->t2 / HZ, | |
1458 | rose->t3 / HZ, | |
1459 | rose->hb / HZ, | |
1460 | ax25_display_timer(&rose->idletimer) / (60 * HZ), | |
1461 | rose->idle / (60 * HZ), | |
31e6d363 ED |
1462 | sk_wmem_alloc_get(s), |
1463 | sk_rmem_alloc_get(s), | |
1da177e4 LT |
1464 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); |
1465 | } | |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | ||
56b3d975 | 1470 | static const struct seq_operations rose_info_seqops = { |
1da177e4 LT |
1471 | .start = rose_info_start, |
1472 | .next = rose_info_next, | |
1473 | .stop = rose_info_stop, | |
1474 | .show = rose_info_show, | |
1475 | }; | |
1476 | ||
1477 | static int rose_info_open(struct inode *inode, struct file *file) | |
1478 | { | |
1479 | return seq_open(file, &rose_info_seqops); | |
1480 | } | |
1481 | ||
da7071d7 | 1482 | static const struct file_operations rose_info_fops = { |
1da177e4 LT |
1483 | .owner = THIS_MODULE, |
1484 | .open = rose_info_open, | |
1485 | .read = seq_read, | |
1486 | .llseek = seq_lseek, | |
1487 | .release = seq_release, | |
1488 | }; | |
1489 | #endif /* CONFIG_PROC_FS */ | |
1490 | ||
ec1b4cf7 | 1491 | static const struct net_proto_family rose_family_ops = { |
1da177e4 LT |
1492 | .family = PF_ROSE, |
1493 | .create = rose_create, | |
1494 | .owner = THIS_MODULE, | |
1495 | }; | |
1496 | ||
5708e868 | 1497 | static const struct proto_ops rose_proto_ops = { |
1da177e4 LT |
1498 | .family = PF_ROSE, |
1499 | .owner = THIS_MODULE, | |
1500 | .release = rose_release, | |
1501 | .bind = rose_bind, | |
1502 | .connect = rose_connect, | |
1503 | .socketpair = sock_no_socketpair, | |
1504 | .accept = rose_accept, | |
1505 | .getname = rose_getname, | |
1506 | .poll = datagram_poll, | |
1507 | .ioctl = rose_ioctl, | |
1508 | .listen = rose_listen, | |
1509 | .shutdown = sock_no_shutdown, | |
1510 | .setsockopt = rose_setsockopt, | |
1511 | .getsockopt = rose_getsockopt, | |
1512 | .sendmsg = rose_sendmsg, | |
1513 | .recvmsg = rose_recvmsg, | |
1514 | .mmap = sock_no_mmap, | |
1515 | .sendpage = sock_no_sendpage, | |
1516 | }; | |
1517 | ||
1518 | static struct notifier_block rose_dev_notifier = { | |
1519 | .notifier_call = rose_device_event, | |
1520 | }; | |
1521 | ||
1522 | static struct net_device **dev_rose; | |
1523 | ||
8d5cf596 RB |
1524 | static struct ax25_protocol rose_pid = { |
1525 | .pid = AX25_P_ROSE, | |
1526 | .func = rose_route_frame | |
1527 | }; | |
1528 | ||
a4282717 RB |
1529 | static struct ax25_linkfail rose_linkfail_notifier = { |
1530 | .func = rose_link_failed | |
1531 | }; | |
1532 | ||
1da177e4 LT |
1533 | static int __init rose_proto_init(void) |
1534 | { | |
1535 | int i; | |
a83cd2cc | 1536 | int rc; |
1da177e4 | 1537 | |
a83cd2cc AD |
1538 | if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { |
1539 | printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); | |
1540 | rc = -EINVAL; | |
1541 | goto out; | |
1542 | } | |
1543 | ||
1544 | rc = proto_register(&rose_proto, 0); | |
1da177e4 LT |
1545 | if (rc != 0) |
1546 | goto out; | |
1547 | ||
1548 | rose_callsign = null_ax25_address; | |
1549 | ||
1b30dd35 | 1550 | dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); |
1da177e4 LT |
1551 | if (dev_rose == NULL) { |
1552 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); | |
a83cd2cc AD |
1553 | rc = -ENOMEM; |
1554 | goto out_proto_unregister; | |
1da177e4 LT |
1555 | } |
1556 | ||
1da177e4 LT |
1557 | for (i = 0; i < rose_ndevs; i++) { |
1558 | struct net_device *dev; | |
1559 | char name[IFNAMSIZ]; | |
1560 | ||
1561 | sprintf(name, "rose%d", i); | |
d289d120 | 1562 | dev = alloc_netdev(0, name, rose_setup); |
1da177e4 LT |
1563 | if (!dev) { |
1564 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); | |
70ff3b66 | 1565 | rc = -ENOMEM; |
1da177e4 LT |
1566 | goto fail; |
1567 | } | |
70ff3b66 AD |
1568 | rc = register_netdev(dev); |
1569 | if (rc) { | |
520d1b83 | 1570 | printk(KERN_ERR "ROSE: netdevice registration failed\n"); |
1da177e4 LT |
1571 | free_netdev(dev); |
1572 | goto fail; | |
1573 | } | |
c773e847 | 1574 | rose_set_lockdep_key(dev); |
1da177e4 LT |
1575 | dev_rose[i] = dev; |
1576 | } | |
1577 | ||
1578 | sock_register(&rose_family_ops); | |
1579 | register_netdevice_notifier(&rose_dev_notifier); | |
1da177e4 | 1580 | |
8d5cf596 | 1581 | ax25_register_pid(&rose_pid); |
a4282717 | 1582 | ax25_linkfail_register(&rose_linkfail_notifier); |
1da177e4 LT |
1583 | |
1584 | #ifdef CONFIG_SYSCTL | |
1585 | rose_register_sysctl(); | |
1586 | #endif | |
1587 | rose_loopback_init(); | |
1588 | ||
1589 | rose_add_loopback_neigh(); | |
1590 | ||
457c4cbc EB |
1591 | proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops); |
1592 | proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops); | |
1593 | proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops); | |
1594 | proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops); | |
1da177e4 LT |
1595 | out: |
1596 | return rc; | |
1597 | fail: | |
1598 | while (--i >= 0) { | |
1599 | unregister_netdev(dev_rose[i]); | |
1600 | free_netdev(dev_rose[i]); | |
1601 | } | |
1602 | kfree(dev_rose); | |
a83cd2cc | 1603 | out_proto_unregister: |
1da177e4 | 1604 | proto_unregister(&rose_proto); |
70ff3b66 | 1605 | goto out; |
1da177e4 LT |
1606 | } |
1607 | module_init(rose_proto_init); | |
1608 | ||
1609 | module_param(rose_ndevs, int, 0); | |
1610 | MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); | |
1611 | ||
1612 | MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); | |
1613 | MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); | |
1614 | MODULE_LICENSE("GPL"); | |
1615 | MODULE_ALIAS_NETPROTO(PF_ROSE); | |
1616 | ||
1617 | static void __exit rose_exit(void) | |
1618 | { | |
1619 | int i; | |
1620 | ||
457c4cbc EB |
1621 | proc_net_remove(&init_net, "rose"); |
1622 | proc_net_remove(&init_net, "rose_neigh"); | |
1623 | proc_net_remove(&init_net, "rose_nodes"); | |
1624 | proc_net_remove(&init_net, "rose_routes"); | |
1da177e4 LT |
1625 | rose_loopback_clear(); |
1626 | ||
1627 | rose_rt_free(); | |
1628 | ||
1629 | ax25_protocol_release(AX25_P_ROSE); | |
a4282717 | 1630 | ax25_linkfail_release(&rose_linkfail_notifier); |
1da177e4 LT |
1631 | |
1632 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1633 | ax25_listen_release(&rose_callsign, NULL); | |
1634 | ||
1635 | #ifdef CONFIG_SYSCTL | |
1636 | rose_unregister_sysctl(); | |
1637 | #endif | |
1638 | unregister_netdevice_notifier(&rose_dev_notifier); | |
1639 | ||
1640 | sock_unregister(PF_ROSE); | |
1641 | ||
1642 | for (i = 0; i < rose_ndevs; i++) { | |
1643 | struct net_device *dev = dev_rose[i]; | |
1644 | ||
1645 | if (dev) { | |
1646 | unregister_netdev(dev); | |
1647 | free_netdev(dev); | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | kfree(dev_rose); | |
1652 | proto_unregister(&rose_proto); | |
1653 | } | |
1654 | ||
1655 | module_exit(rose_exit); |