Commit | Line | Data |
---|---|---|
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> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/sched.h> | |
23 | #include <linux/spinlock.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/sockios.h> | |
27 | #include <linux/net.h> | |
28 | #include <linux/stat.h> | |
457c4cbc | 29 | #include <net/net_namespace.h> |
1da177e4 LT |
30 | #include <net/ax25.h> |
31 | #include <linux/inet.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/if_arp.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <net/sock.h> | |
36 | #include <asm/system.h> | |
37 | #include <asm/uaccess.h> | |
38 | #include <linux/fcntl.h> | |
39 | #include <linux/termios.h> | |
40 | #include <linux/mm.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/notifier.h> | |
43 | #include <net/rose.h> | |
44 | #include <linux/proc_fs.h> | |
45 | #include <linux/seq_file.h> | |
c752f073 | 46 | #include <net/tcp_states.h> |
1da177e4 LT |
47 | #include <net/ip.h> |
48 | #include <net/arp.h> | |
49 | ||
50 | static int rose_ndevs = 10; | |
51 | ||
52 | int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0; | |
53 | int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1; | |
54 | int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2; | |
55 | int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3; | |
56 | int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE; | |
57 | int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB; | |
58 | int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING; | |
59 | int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT; | |
60 | int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC; | |
61 | int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE; | |
62 | ||
63 | static HLIST_HEAD(rose_list); | |
64 | static DEFINE_SPINLOCK(rose_list_lock); | |
65 | ||
5708e868 | 66 | static const struct proto_ops rose_proto_ops; |
1da177e4 LT |
67 | |
68 | ax25_address rose_callsign; | |
69 | ||
b1d21ca8 RB |
70 | /* |
71 | * ROSE network devices are virtual network devices encapsulating ROSE | |
72 | * frames into AX.25 which will be sent through an AX.25 device, so form a | |
73 | * special "super class" of normal net devices; split their locks off into a | |
74 | * separate class since they always nest. | |
75 | */ | |
76 | static struct lock_class_key rose_netdev_xmit_lock_key; | |
cf508b12 | 77 | static struct lock_class_key rose_netdev_addr_lock_key; |
b1d21ca8 | 78 | |
e8a0464c DM |
79 | static void rose_set_lockdep_one(struct net_device *dev, |
80 | struct netdev_queue *txq, | |
81 | void *_unused) | |
c773e847 DM |
82 | { |
83 | lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key); | |
84 | } | |
85 | ||
86 | static void rose_set_lockdep_key(struct net_device *dev) | |
87 | { | |
cf508b12 | 88 | lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key); |
e8a0464c | 89 | netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL); |
c773e847 DM |
90 | } |
91 | ||
1da177e4 LT |
92 | /* |
93 | * Convert a ROSE address into text. | |
94 | */ | |
dcf777f6 | 95 | char *rose2asc(char *buf, const rose_address *addr) |
1da177e4 | 96 | { |
1da177e4 LT |
97 | if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && |
98 | addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && | |
99 | addr->rose_addr[4] == 0x00) { | |
dcf777f6 | 100 | strcpy(buf, "*"); |
1da177e4 | 101 | } else { |
dcf777f6 | 102 | sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, |
1da177e4 LT |
103 | addr->rose_addr[1] & 0xFF, |
104 | addr->rose_addr[2] & 0xFF, | |
105 | addr->rose_addr[3] & 0xFF, | |
106 | addr->rose_addr[4] & 0xFF); | |
107 | } | |
108 | ||
dcf777f6 | 109 | return buf; |
1da177e4 LT |
110 | } |
111 | ||
112 | /* | |
113 | * Compare two ROSE addresses, 0 == equal. | |
114 | */ | |
115 | int rosecmp(rose_address *addr1, rose_address *addr2) | |
116 | { | |
117 | int i; | |
118 | ||
119 | for (i = 0; i < 5; i++) | |
120 | if (addr1->rose_addr[i] != addr2->rose_addr[i]) | |
121 | return 1; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | /* | |
127 | * Compare two ROSE addresses for only mask digits, 0 == equal. | |
128 | */ | |
129 | int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) | |
130 | { | |
95b7d924 | 131 | unsigned int i, j; |
1da177e4 LT |
132 | |
133 | if (mask > 10) | |
134 | return 1; | |
135 | ||
136 | for (i = 0; i < mask; i++) { | |
137 | j = i / 2; | |
138 | ||
139 | if ((i % 2) != 0) { | |
140 | if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) | |
141 | return 1; | |
142 | } else { | |
143 | if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) | |
144 | return 1; | |
145 | } | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Socket removal during an interrupt is now safe. | |
153 | */ | |
154 | static void rose_remove_socket(struct sock *sk) | |
155 | { | |
156 | spin_lock_bh(&rose_list_lock); | |
157 | sk_del_node_init(sk); | |
158 | spin_unlock_bh(&rose_list_lock); | |
159 | } | |
160 | ||
161 | /* | |
162 | * Kill all bound sockets on a broken link layer connection to a | |
163 | * particular neighbour. | |
164 | */ | |
165 | void rose_kill_by_neigh(struct rose_neigh *neigh) | |
166 | { | |
167 | struct sock *s; | |
168 | struct hlist_node *node; | |
169 | ||
170 | spin_lock_bh(&rose_list_lock); | |
171 | sk_for_each(s, node, &rose_list) { | |
172 | struct rose_sock *rose = rose_sk(s); | |
173 | ||
174 | if (rose->neighbour == neigh) { | |
175 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
176 | rose->neighbour->use--; | |
177 | rose->neighbour = NULL; | |
178 | } | |
179 | } | |
180 | spin_unlock_bh(&rose_list_lock); | |
181 | } | |
182 | ||
183 | /* | |
184 | * Kill all bound sockets on a dropped device. | |
185 | */ | |
186 | static void rose_kill_by_device(struct net_device *dev) | |
187 | { | |
188 | struct sock *s; | |
189 | struct hlist_node *node; | |
190 | ||
191 | spin_lock_bh(&rose_list_lock); | |
192 | sk_for_each(s, node, &rose_list) { | |
193 | struct rose_sock *rose = rose_sk(s); | |
194 | ||
195 | if (rose->device == dev) { | |
196 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
197 | rose->neighbour->use--; | |
198 | rose->device = NULL; | |
199 | } | |
200 | } | |
201 | spin_unlock_bh(&rose_list_lock); | |
202 | } | |
203 | ||
204 | /* | |
205 | * Handle device status changes. | |
206 | */ | |
207 | static int rose_device_event(struct notifier_block *this, unsigned long event, | |
208 | void *ptr) | |
209 | { | |
210 | struct net_device *dev = (struct net_device *)ptr; | |
211 | ||
721499e8 | 212 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
213 | return NOTIFY_DONE; |
214 | ||
1da177e4 LT |
215 | if (event != NETDEV_DOWN) |
216 | return NOTIFY_DONE; | |
217 | ||
218 | switch (dev->type) { | |
219 | case ARPHRD_ROSE: | |
220 | rose_kill_by_device(dev); | |
221 | break; | |
222 | case ARPHRD_AX25: | |
223 | rose_link_device_down(dev); | |
224 | rose_rt_device_down(dev); | |
225 | break; | |
226 | } | |
227 | ||
228 | return NOTIFY_DONE; | |
229 | } | |
230 | ||
231 | /* | |
232 | * Add a socket to the bound sockets list. | |
233 | */ | |
234 | static void rose_insert_socket(struct sock *sk) | |
235 | { | |
236 | ||
237 | spin_lock_bh(&rose_list_lock); | |
238 | sk_add_node(sk, &rose_list); | |
239 | spin_unlock_bh(&rose_list_lock); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Find a socket that wants to accept the Call Request we just | |
244 | * received. | |
245 | */ | |
246 | static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) | |
247 | { | |
248 | struct sock *s; | |
249 | struct hlist_node *node; | |
250 | ||
251 | spin_lock_bh(&rose_list_lock); | |
252 | sk_for_each(s, node, &rose_list) { | |
253 | struct rose_sock *rose = rose_sk(s); | |
254 | ||
255 | if (!rosecmp(&rose->source_addr, addr) && | |
256 | !ax25cmp(&rose->source_call, call) && | |
257 | !rose->source_ndigis && s->sk_state == TCP_LISTEN) | |
258 | goto found; | |
259 | } | |
260 | ||
261 | sk_for_each(s, node, &rose_list) { | |
262 | struct rose_sock *rose = rose_sk(s); | |
263 | ||
264 | if (!rosecmp(&rose->source_addr, addr) && | |
265 | !ax25cmp(&rose->source_call, &null_ax25_address) && | |
266 | s->sk_state == TCP_LISTEN) | |
267 | goto found; | |
268 | } | |
269 | s = NULL; | |
270 | found: | |
271 | spin_unlock_bh(&rose_list_lock); | |
272 | return s; | |
273 | } | |
274 | ||
275 | /* | |
276 | * Find a connected ROSE socket given my LCI and device. | |
277 | */ | |
278 | struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) | |
279 | { | |
280 | struct sock *s; | |
281 | struct hlist_node *node; | |
282 | ||
283 | spin_lock_bh(&rose_list_lock); | |
284 | sk_for_each(s, node, &rose_list) { | |
285 | struct rose_sock *rose = rose_sk(s); | |
286 | ||
287 | if (rose->lci == lci && rose->neighbour == neigh) | |
288 | goto found; | |
289 | } | |
290 | s = NULL; | |
291 | found: | |
292 | spin_unlock_bh(&rose_list_lock); | |
293 | return s; | |
294 | } | |
295 | ||
296 | /* | |
297 | * Find a unique LCI for a given device. | |
298 | */ | |
299 | unsigned int rose_new_lci(struct rose_neigh *neigh) | |
300 | { | |
301 | int lci; | |
302 | ||
303 | if (neigh->dce_mode) { | |
304 | for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) | |
305 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
306 | return lci; | |
307 | } else { | |
308 | for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) | |
309 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
310 | return lci; | |
311 | } | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | /* | |
317 | * Deferred destroy. | |
318 | */ | |
319 | void rose_destroy_socket(struct sock *); | |
320 | ||
321 | /* | |
322 | * Handler for deferred kills. | |
323 | */ | |
324 | static void rose_destroy_timer(unsigned long data) | |
325 | { | |
326 | rose_destroy_socket((struct sock *)data); | |
327 | } | |
328 | ||
329 | /* | |
330 | * This is called from user mode and the timers. Thus it protects itself | |
331 | * against interrupt users but doesn't worry about being called during | |
332 | * work. Once it is removed from the queue no interrupt or bottom half | |
333 | * will touch it and we are (fairly 8-) ) safe. | |
334 | */ | |
335 | void rose_destroy_socket(struct sock *sk) | |
336 | { | |
337 | struct sk_buff *skb; | |
338 | ||
339 | rose_remove_socket(sk); | |
340 | rose_stop_heartbeat(sk); | |
341 | rose_stop_idletimer(sk); | |
342 | rose_stop_timer(sk); | |
343 | ||
344 | rose_clear_queues(sk); /* Flush the queues */ | |
345 | ||
346 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { | |
347 | if (skb->sk != sk) { /* A pending connection */ | |
348 | /* Queue the unaccepted socket for death */ | |
349 | sock_set_flag(skb->sk, SOCK_DEAD); | |
350 | rose_start_heartbeat(skb->sk); | |
351 | rose_sk(skb->sk)->state = ROSE_STATE_0; | |
352 | } | |
353 | ||
354 | kfree_skb(skb); | |
355 | } | |
356 | ||
c564039f | 357 | if (sk_has_allocations(sk)) { |
1da177e4 | 358 | /* Defer: outstanding buffers */ |
b24b8a24 PE |
359 | setup_timer(&sk->sk_timer, rose_destroy_timer, |
360 | (unsigned long)sk); | |
1da177e4 | 361 | sk->sk_timer.expires = jiffies + 10 * HZ; |
1da177e4 LT |
362 | add_timer(&sk->sk_timer); |
363 | } else | |
364 | sock_put(sk); | |
365 | } | |
366 | ||
367 | /* | |
368 | * Handling for system calls applied via the various interfaces to a | |
369 | * ROSE socket object. | |
370 | */ | |
371 | ||
372 | static int rose_setsockopt(struct socket *sock, int level, int optname, | |
b7058842 | 373 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
374 | { |
375 | struct sock *sk = sock->sk; | |
376 | struct rose_sock *rose = rose_sk(sk); | |
377 | int opt; | |
378 | ||
379 | if (level != SOL_ROSE) | |
380 | return -ENOPROTOOPT; | |
381 | ||
382 | if (optlen < sizeof(int)) | |
383 | return -EINVAL; | |
384 | ||
385 | if (get_user(opt, (int __user *)optval)) | |
386 | return -EFAULT; | |
387 | ||
388 | switch (optname) { | |
389 | case ROSE_DEFER: | |
390 | rose->defer = opt ? 1 : 0; | |
391 | return 0; | |
392 | ||
393 | case ROSE_T1: | |
394 | if (opt < 1) | |
395 | return -EINVAL; | |
396 | rose->t1 = opt * HZ; | |
397 | return 0; | |
398 | ||
399 | case ROSE_T2: | |
400 | if (opt < 1) | |
401 | return -EINVAL; | |
402 | rose->t2 = opt * HZ; | |
403 | return 0; | |
404 | ||
405 | case ROSE_T3: | |
406 | if (opt < 1) | |
407 | return -EINVAL; | |
408 | rose->t3 = opt * HZ; | |
409 | return 0; | |
410 | ||
411 | case ROSE_HOLDBACK: | |
412 | if (opt < 1) | |
413 | return -EINVAL; | |
414 | rose->hb = opt * HZ; | |
415 | return 0; | |
416 | ||
417 | case ROSE_IDLE: | |
418 | if (opt < 0) | |
419 | return -EINVAL; | |
420 | rose->idle = opt * 60 * HZ; | |
421 | return 0; | |
422 | ||
423 | case ROSE_QBITINCL: | |
424 | rose->qbitincl = opt ? 1 : 0; | |
425 | return 0; | |
426 | ||
427 | default: | |
428 | return -ENOPROTOOPT; | |
429 | } | |
430 | } | |
431 | ||
432 | static int rose_getsockopt(struct socket *sock, int level, int optname, | |
433 | char __user *optval, int __user *optlen) | |
434 | { | |
435 | struct sock *sk = sock->sk; | |
436 | struct rose_sock *rose = rose_sk(sk); | |
437 | int val = 0; | |
438 | int len; | |
439 | ||
440 | if (level != SOL_ROSE) | |
441 | return -ENOPROTOOPT; | |
442 | ||
443 | if (get_user(len, optlen)) | |
444 | return -EFAULT; | |
445 | ||
446 | if (len < 0) | |
447 | return -EINVAL; | |
448 | ||
449 | switch (optname) { | |
450 | case ROSE_DEFER: | |
451 | val = rose->defer; | |
452 | break; | |
453 | ||
454 | case ROSE_T1: | |
455 | val = rose->t1 / HZ; | |
456 | break; | |
457 | ||
458 | case ROSE_T2: | |
459 | val = rose->t2 / HZ; | |
460 | break; | |
461 | ||
462 | case ROSE_T3: | |
463 | val = rose->t3 / HZ; | |
464 | break; | |
465 | ||
466 | case ROSE_HOLDBACK: | |
467 | val = rose->hb / HZ; | |
468 | break; | |
469 | ||
470 | case ROSE_IDLE: | |
471 | val = rose->idle / (60 * HZ); | |
472 | break; | |
473 | ||
474 | case ROSE_QBITINCL: | |
475 | val = rose->qbitincl; | |
476 | break; | |
477 | ||
478 | default: | |
479 | return -ENOPROTOOPT; | |
480 | } | |
481 | ||
482 | len = min_t(unsigned int, len, sizeof(int)); | |
483 | ||
484 | if (put_user(len, optlen)) | |
485 | return -EFAULT; | |
486 | ||
487 | return copy_to_user(optval, &val, len) ? -EFAULT : 0; | |
488 | } | |
489 | ||
490 | static int rose_listen(struct socket *sock, int backlog) | |
491 | { | |
492 | struct sock *sk = sock->sk; | |
493 | ||
494 | if (sk->sk_state != TCP_LISTEN) { | |
495 | struct rose_sock *rose = rose_sk(sk); | |
496 | ||
497 | rose->dest_ndigis = 0; | |
498 | memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); | |
499 | memset(&rose->dest_call, 0, AX25_ADDR_LEN); | |
500 | memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); | |
501 | sk->sk_max_ack_backlog = backlog; | |
502 | sk->sk_state = TCP_LISTEN; | |
503 | return 0; | |
504 | } | |
505 | ||
506 | return -EOPNOTSUPP; | |
507 | } | |
508 | ||
509 | static struct proto rose_proto = { | |
510 | .name = "ROSE", | |
511 | .owner = THIS_MODULE, | |
512 | .obj_size = sizeof(struct rose_sock), | |
513 | }; | |
514 | ||
3f378b68 EP |
515 | static int rose_create(struct net *net, struct socket *sock, int protocol, |
516 | int kern) | |
1da177e4 LT |
517 | { |
518 | struct sock *sk; | |
519 | struct rose_sock *rose; | |
520 | ||
1b8d7ae4 EB |
521 | if (net != &init_net) |
522 | return -EAFNOSUPPORT; | |
523 | ||
1da177e4 LT |
524 | if (sock->type != SOCK_SEQPACKET || protocol != 0) |
525 | return -ESOCKTNOSUPPORT; | |
526 | ||
6257ff21 PE |
527 | sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto); |
528 | if (sk == NULL) | |
1da177e4 LT |
529 | return -ENOMEM; |
530 | ||
531 | rose = rose_sk(sk); | |
532 | ||
533 | sock_init_data(sock, sk); | |
534 | ||
535 | skb_queue_head_init(&rose->ack_queue); | |
536 | #ifdef M_BIT | |
537 | skb_queue_head_init(&rose->frag_queue); | |
538 | rose->fraglen = 0; | |
539 | #endif | |
540 | ||
541 | sock->ops = &rose_proto_ops; | |
542 | sk->sk_protocol = protocol; | |
543 | ||
544 | init_timer(&rose->timer); | |
545 | init_timer(&rose->idletimer); | |
546 | ||
82e84249 RB |
547 | rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); |
548 | rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); | |
549 | rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); | |
550 | rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); | |
551 | rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); | |
1da177e4 LT |
552 | |
553 | rose->state = ROSE_STATE_0; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | static struct sock *rose_make_new(struct sock *osk) | |
559 | { | |
560 | struct sock *sk; | |
561 | struct rose_sock *rose, *orose; | |
562 | ||
563 | if (osk->sk_type != SOCK_SEQPACKET) | |
564 | return NULL; | |
565 | ||
3b1e0a65 | 566 | sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto); |
6257ff21 | 567 | if (sk == NULL) |
1da177e4 LT |
568 | return NULL; |
569 | ||
570 | rose = rose_sk(sk); | |
571 | ||
572 | sock_init_data(NULL, sk); | |
573 | ||
574 | skb_queue_head_init(&rose->ack_queue); | |
575 | #ifdef M_BIT | |
576 | skb_queue_head_init(&rose->frag_queue); | |
577 | rose->fraglen = 0; | |
578 | #endif | |
579 | ||
580 | sk->sk_type = osk->sk_type; | |
1da177e4 LT |
581 | sk->sk_priority = osk->sk_priority; |
582 | sk->sk_protocol = osk->sk_protocol; | |
583 | sk->sk_rcvbuf = osk->sk_rcvbuf; | |
584 | sk->sk_sndbuf = osk->sk_sndbuf; | |
585 | sk->sk_state = TCP_ESTABLISHED; | |
53b924b3 | 586 | sock_copy_flags(sk, osk); |
1da177e4 LT |
587 | |
588 | init_timer(&rose->timer); | |
589 | init_timer(&rose->idletimer); | |
590 | ||
591 | orose = rose_sk(osk); | |
592 | rose->t1 = orose->t1; | |
593 | rose->t2 = orose->t2; | |
594 | rose->t3 = orose->t3; | |
595 | rose->hb = orose->hb; | |
596 | rose->idle = orose->idle; | |
597 | rose->defer = orose->defer; | |
598 | rose->device = orose->device; | |
599 | rose->qbitincl = orose->qbitincl; | |
600 | ||
601 | return sk; | |
602 | } | |
603 | ||
604 | static int rose_release(struct socket *sock) | |
605 | { | |
606 | struct sock *sk = sock->sk; | |
607 | struct rose_sock *rose; | |
608 | ||
609 | if (sk == NULL) return 0; | |
610 | ||
4965291a JP |
611 | sock_hold(sk); |
612 | sock_orphan(sk); | |
613 | lock_sock(sk); | |
1da177e4 LT |
614 | rose = rose_sk(sk); |
615 | ||
616 | switch (rose->state) { | |
617 | case ROSE_STATE_0: | |
4965291a | 618 | release_sock(sk); |
1da177e4 | 619 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 620 | lock_sock(sk); |
1da177e4 LT |
621 | rose_destroy_socket(sk); |
622 | break; | |
623 | ||
624 | case ROSE_STATE_2: | |
625 | rose->neighbour->use--; | |
4965291a | 626 | release_sock(sk); |
1da177e4 | 627 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 628 | lock_sock(sk); |
1da177e4 LT |
629 | rose_destroy_socket(sk); |
630 | break; | |
631 | ||
632 | case ROSE_STATE_1: | |
633 | case ROSE_STATE_3: | |
634 | case ROSE_STATE_4: | |
635 | case ROSE_STATE_5: | |
636 | rose_clear_queues(sk); | |
637 | rose_stop_idletimer(sk); | |
638 | rose_write_internal(sk, ROSE_CLEAR_REQUEST); | |
639 | rose_start_t3timer(sk); | |
640 | rose->state = ROSE_STATE_2; | |
641 | sk->sk_state = TCP_CLOSE; | |
642 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
643 | sk->sk_state_change(sk); | |
644 | sock_set_flag(sk, SOCK_DEAD); | |
645 | sock_set_flag(sk, SOCK_DESTROY); | |
646 | break; | |
647 | ||
648 | default: | |
649 | break; | |
650 | } | |
651 | ||
652 | sock->sk = NULL; | |
4965291a JP |
653 | release_sock(sk); |
654 | sock_put(sk); | |
1da177e4 LT |
655 | |
656 | return 0; | |
657 | } | |
658 | ||
659 | static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
660 | { | |
661 | struct sock *sk = sock->sk; | |
662 | struct rose_sock *rose = rose_sk(sk); | |
663 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
664 | struct net_device *dev; | |
01d7dd0e RB |
665 | ax25_address *source; |
666 | ax25_uid_assoc *user; | |
1da177e4 LT |
667 | int n; |
668 | ||
669 | if (!sock_flag(sk, SOCK_ZAPPED)) | |
670 | return -EINVAL; | |
671 | ||
672 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
673 | return -EINVAL; | |
674 | ||
675 | if (addr->srose_family != AF_ROSE) | |
676 | return -EINVAL; | |
677 | ||
678 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
679 | return -EINVAL; | |
680 | ||
681 | if (addr->srose_ndigis > ROSE_MAX_DIGIS) | |
682 | return -EINVAL; | |
683 | ||
684 | if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) { | |
685 | SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n"); | |
686 | return -EADDRNOTAVAIL; | |
687 | } | |
688 | ||
689 | source = &addr->srose_call; | |
690 | ||
c2a2b8d3 | 691 | user = ax25_findbyuid(current_euid()); |
01d7dd0e RB |
692 | if (user) { |
693 | rose->source_call = user->call; | |
694 | ax25_uid_put(user); | |
695 | } else { | |
1da177e4 LT |
696 | if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) |
697 | return -EACCES; | |
01d7dd0e | 698 | rose->source_call = *source; |
1da177e4 LT |
699 | } |
700 | ||
701 | rose->source_addr = addr->srose_addr; | |
1da177e4 LT |
702 | rose->device = dev; |
703 | rose->source_ndigis = addr->srose_ndigis; | |
704 | ||
705 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
706 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
707 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
708 | rose->source_digis[n] = full_addr->srose_digis[n]; | |
709 | } else { | |
710 | if (rose->source_ndigis == 1) { | |
711 | rose->source_digis[0] = addr->srose_digi; | |
712 | } | |
713 | } | |
714 | ||
715 | rose_insert_socket(sk); | |
716 | ||
717 | sock_reset_flag(sk, SOCK_ZAPPED); | |
718 | SOCK_DEBUG(sk, "ROSE: socket is bound\n"); | |
719 | return 0; | |
720 | } | |
721 | ||
722 | static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) | |
723 | { | |
724 | struct sock *sk = sock->sk; | |
725 | struct rose_sock *rose = rose_sk(sk); | |
726 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
727 | unsigned char cause, diagnostic; | |
1da177e4 | 728 | struct net_device *dev; |
01d7dd0e | 729 | ax25_uid_assoc *user; |
2536b94a | 730 | int n, err = 0; |
1da177e4 LT |
731 | |
732 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
733 | return -EINVAL; | |
734 | ||
735 | if (addr->srose_family != AF_ROSE) | |
736 | return -EINVAL; | |
737 | ||
738 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
739 | return -EINVAL; | |
740 | ||
741 | if (addr->srose_ndigis > ROSE_MAX_DIGIS) | |
742 | return -EINVAL; | |
743 | ||
744 | /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ | |
745 | if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) | |
746 | return -EINVAL; | |
747 | ||
2536b94a RB |
748 | lock_sock(sk); |
749 | ||
750 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
751 | /* Connect completed during a ERESTARTSYS event */ | |
752 | sock->state = SS_CONNECTED; | |
753 | goto out_release; | |
754 | } | |
755 | ||
756 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
757 | sock->state = SS_UNCONNECTED; | |
758 | err = -ECONNREFUSED; | |
759 | goto out_release; | |
760 | } | |
761 | ||
762 | if (sk->sk_state == TCP_ESTABLISHED) { | |
763 | /* No reconnect on a seqpacket socket */ | |
764 | err = -EISCONN; | |
765 | goto out_release; | |
766 | } | |
767 | ||
768 | sk->sk_state = TCP_CLOSE; | |
769 | sock->state = SS_UNCONNECTED; | |
770 | ||
1da177e4 | 771 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, |
fe2c802a | 772 | &diagnostic, 0); |
43837b1e BP |
773 | if (!rose->neighbour) { |
774 | err = -ENETUNREACH; | |
775 | goto out_release; | |
776 | } | |
1da177e4 LT |
777 | |
778 | rose->lci = rose_new_lci(rose->neighbour); | |
2536b94a RB |
779 | if (!rose->lci) { |
780 | err = -ENETUNREACH; | |
781 | goto out_release; | |
782 | } | |
1da177e4 LT |
783 | |
784 | if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ | |
785 | sock_reset_flag(sk, SOCK_ZAPPED); | |
786 | ||
2536b94a RB |
787 | if ((dev = rose_dev_first()) == NULL) { |
788 | err = -ENETUNREACH; | |
789 | goto out_release; | |
790 | } | |
1da177e4 | 791 | |
c2a2b8d3 | 792 | user = ax25_findbyuid(current_euid()); |
2536b94a RB |
793 | if (!user) { |
794 | err = -EINVAL; | |
795 | goto out_release; | |
796 | } | |
1da177e4 LT |
797 | |
798 | memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); | |
01d7dd0e | 799 | rose->source_call = user->call; |
1da177e4 | 800 | rose->device = dev; |
01d7dd0e | 801 | ax25_uid_put(user); |
1da177e4 LT |
802 | |
803 | rose_insert_socket(sk); /* Finish the bind */ | |
804 | } | |
d85838c5 | 805 | rose_try_next_neigh: |
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 (;;) { |
75606dc6 | 847 | prepare_to_wait(sk->sk_sleep, &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 | } |
75606dc6 RB |
860 | finish_wait(sk->sk_sleep, &wait); |
861 | ||
862 | if (err) | |
863 | goto out_release; | |
1da177e4 LT |
864 | } |
865 | ||
866 | if (sk->sk_state != TCP_ESTABLISHED) { | |
d85838c5 | 867 | /* Try next neighbour */ |
fe2c802a | 868 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic, 0); |
d85838c5 RB |
869 | if (rose->neighbour) |
870 | goto rose_try_next_neigh; | |
2536b94a RB |
871 | |
872 | /* No more neighbours */ | |
1da177e4 | 873 | sock->state = SS_UNCONNECTED; |
2536b94a RB |
874 | err = sock_error(sk); /* Always set at this point */ |
875 | goto out_release; | |
1da177e4 LT |
876 | } |
877 | ||
878 | sock->state = SS_CONNECTED; | |
879 | ||
2536b94a RB |
880 | out_release: |
881 | release_sock(sk); | |
882 | ||
883 | return err; | |
1da177e4 LT |
884 | } |
885 | ||
886 | static int rose_accept(struct socket *sock, struct socket *newsock, int flags) | |
887 | { | |
1da177e4 LT |
888 | struct sk_buff *skb; |
889 | struct sock *newsk; | |
75606dc6 | 890 | DEFINE_WAIT(wait); |
1da177e4 LT |
891 | struct sock *sk; |
892 | int err = 0; | |
893 | ||
894 | if ((sk = sock->sk) == NULL) | |
895 | return -EINVAL; | |
896 | ||
897 | lock_sock(sk); | |
898 | if (sk->sk_type != SOCK_SEQPACKET) { | |
899 | err = -EOPNOTSUPP; | |
75606dc6 | 900 | goto out_release; |
1da177e4 LT |
901 | } |
902 | ||
903 | if (sk->sk_state != TCP_LISTEN) { | |
904 | err = -EINVAL; | |
75606dc6 | 905 | goto out_release; |
1da177e4 LT |
906 | } |
907 | ||
908 | /* | |
909 | * The write queue this time is holding sockets ready to use | |
910 | * hooked into the SABM we saved | |
911 | */ | |
1da177e4 | 912 | for (;;) { |
75606dc6 RB |
913 | prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE); |
914 | ||
1da177e4 LT |
915 | skb = skb_dequeue(&sk->sk_receive_queue); |
916 | if (skb) | |
917 | break; | |
918 | ||
1da177e4 | 919 | if (flags & O_NONBLOCK) { |
75606dc6 RB |
920 | err = -EWOULDBLOCK; |
921 | break; | |
1da177e4 | 922 | } |
75606dc6 RB |
923 | if (!signal_pending(current)) { |
924 | release_sock(sk); | |
1da177e4 LT |
925 | schedule(); |
926 | lock_sock(sk); | |
927 | continue; | |
928 | } | |
75606dc6 RB |
929 | err = -ERESTARTSYS; |
930 | break; | |
1da177e4 | 931 | } |
75606dc6 RB |
932 | finish_wait(sk->sk_sleep, &wait); |
933 | if (err) | |
934 | goto out_release; | |
1da177e4 LT |
935 | |
936 | newsk = skb->sk; | |
44ccff1f | 937 | sock_graft(newsk, newsock); |
1da177e4 LT |
938 | |
939 | /* Now attach up the new socket */ | |
940 | skb->sk = NULL; | |
941 | kfree_skb(skb); | |
942 | sk->sk_ack_backlog--; | |
1da177e4 | 943 | |
75606dc6 | 944 | out_release: |
1da177e4 LT |
945 | release_sock(sk); |
946 | ||
947 | return err; | |
948 | } | |
949 | ||
950 | static int rose_getname(struct socket *sock, struct sockaddr *uaddr, | |
951 | int *uaddr_len, int peer) | |
952 | { | |
953 | struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; | |
954 | struct sock *sk = sock->sk; | |
955 | struct rose_sock *rose = rose_sk(sk); | |
956 | int n; | |
957 | ||
17ac2e9c | 958 | memset(srose, 0, sizeof(*srose)); |
1da177e4 LT |
959 | if (peer != 0) { |
960 | if (sk->sk_state != TCP_ESTABLISHED) | |
961 | return -ENOTCONN; | |
962 | srose->srose_family = AF_ROSE; | |
963 | srose->srose_addr = rose->dest_addr; | |
964 | srose->srose_call = rose->dest_call; | |
965 | srose->srose_ndigis = rose->dest_ndigis; | |
966 | for (n = 0; n < rose->dest_ndigis; n++) | |
967 | srose->srose_digis[n] = rose->dest_digis[n]; | |
968 | } else { | |
969 | srose->srose_family = AF_ROSE; | |
970 | srose->srose_addr = rose->source_addr; | |
971 | srose->srose_call = rose->source_call; | |
972 | srose->srose_ndigis = rose->source_ndigis; | |
973 | for (n = 0; n < rose->source_ndigis; n++) | |
974 | srose->srose_digis[n] = rose->source_digis[n]; | |
975 | } | |
976 | ||
977 | *uaddr_len = sizeof(struct full_sockaddr_rose); | |
978 | return 0; | |
979 | } | |
980 | ||
981 | int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) | |
982 | { | |
983 | struct sock *sk; | |
984 | struct sock *make; | |
985 | struct rose_sock *make_rose; | |
986 | struct rose_facilities_struct facilities; | |
987 | int n, len; | |
988 | ||
989 | skb->sk = NULL; /* Initially we don't know who it's for */ | |
990 | ||
991 | /* | |
992 | * skb->data points to the rose frame start | |
993 | */ | |
994 | memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); | |
995 | ||
95b7d924 ED |
996 | len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1; |
997 | len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1; | |
1da177e4 LT |
998 | if (!rose_parse_facilities(skb->data + len + 4, &facilities)) { |
999 | rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); | |
1004 | ||
1005 | /* | |
1006 | * We can't accept the Call Request. | |
1007 | */ | |
1008 | if (sk == NULL || sk_acceptq_is_full(sk) || | |
1009 | (make = rose_make_new(sk)) == NULL) { | |
1010 | rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | skb->sk = make; | |
1015 | make->sk_state = TCP_ESTABLISHED; | |
1016 | make_rose = rose_sk(make); | |
1017 | ||
1018 | make_rose->lci = lci; | |
1019 | make_rose->dest_addr = facilities.dest_addr; | |
1020 | make_rose->dest_call = facilities.dest_call; | |
1021 | make_rose->dest_ndigis = facilities.dest_ndigis; | |
1022 | for (n = 0 ; n < facilities.dest_ndigis ; n++) | |
1023 | make_rose->dest_digis[n] = facilities.dest_digis[n]; | |
1024 | make_rose->source_addr = facilities.source_addr; | |
1025 | make_rose->source_call = facilities.source_call; | |
1026 | make_rose->source_ndigis = facilities.source_ndigis; | |
1027 | for (n = 0 ; n < facilities.source_ndigis ; n++) | |
1028 | make_rose->source_digis[n]= facilities.source_digis[n]; | |
1029 | make_rose->neighbour = neigh; | |
1030 | make_rose->device = dev; | |
1031 | make_rose->facilities = facilities; | |
1032 | ||
1033 | make_rose->neighbour->use++; | |
1034 | ||
1035 | if (rose_sk(sk)->defer) { | |
1036 | make_rose->state = ROSE_STATE_5; | |
1037 | } else { | |
1038 | rose_write_internal(make, ROSE_CALL_ACCEPTED); | |
1039 | make_rose->state = ROSE_STATE_3; | |
1040 | rose_start_idletimer(make); | |
1041 | } | |
1042 | ||
1043 | make_rose->condition = 0x00; | |
1044 | make_rose->vs = 0; | |
1045 | make_rose->va = 0; | |
1046 | make_rose->vr = 0; | |
1047 | make_rose->vl = 0; | |
1048 | sk->sk_ack_backlog++; | |
1049 | ||
1050 | rose_insert_socket(make); | |
1051 | ||
1052 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1053 | ||
1054 | rose_start_heartbeat(make); | |
1055 | ||
1056 | if (!sock_flag(sk, SOCK_DEAD)) | |
1057 | sk->sk_data_ready(sk, skb->len); | |
1058 | ||
1059 | return 1; | |
1060 | } | |
1061 | ||
1062 | static int rose_sendmsg(struct kiocb *iocb, struct socket *sock, | |
1063 | struct msghdr *msg, size_t len) | |
1064 | { | |
1065 | struct sock *sk = sock->sk; | |
1066 | struct rose_sock *rose = rose_sk(sk); | |
1067 | struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name; | |
1068 | int err; | |
1069 | struct full_sockaddr_rose srose; | |
1070 | struct sk_buff *skb; | |
1071 | unsigned char *asmptr; | |
1072 | int n, size, qbit = 0; | |
1073 | ||
1074 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) | |
1075 | return -EINVAL; | |
1076 | ||
1077 | if (sock_flag(sk, SOCK_ZAPPED)) | |
1078 | return -EADDRNOTAVAIL; | |
1079 | ||
1080 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1081 | send_sig(SIGPIPE, current, 0); | |
1082 | return -EPIPE; | |
1083 | } | |
1084 | ||
1085 | if (rose->neighbour == NULL || rose->device == NULL) | |
1086 | return -ENETUNREACH; | |
1087 | ||
1088 | if (usrose != NULL) { | |
1089 | if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) | |
1090 | return -EINVAL; | |
1091 | memset(&srose, 0, sizeof(struct full_sockaddr_rose)); | |
1092 | memcpy(&srose, usrose, msg->msg_namelen); | |
1093 | if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || | |
1094 | ax25cmp(&rose->dest_call, &srose.srose_call) != 0) | |
1095 | return -EISCONN; | |
1096 | if (srose.srose_ndigis != rose->dest_ndigis) | |
1097 | return -EISCONN; | |
1098 | if (srose.srose_ndigis == rose->dest_ndigis) { | |
1099 | for (n = 0 ; n < srose.srose_ndigis ; n++) | |
1100 | if (ax25cmp(&rose->dest_digis[n], | |
1101 | &srose.srose_digis[n])) | |
1102 | return -EISCONN; | |
1103 | } | |
1104 | if (srose.srose_family != AF_ROSE) | |
1105 | return -EINVAL; | |
1106 | } else { | |
1107 | if (sk->sk_state != TCP_ESTABLISHED) | |
1108 | return -ENOTCONN; | |
1109 | ||
1110 | srose.srose_family = AF_ROSE; | |
1111 | srose.srose_addr = rose->dest_addr; | |
1112 | srose.srose_call = rose->dest_call; | |
1113 | srose.srose_ndigis = rose->dest_ndigis; | |
1114 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1115 | srose.srose_digis[n] = rose->dest_digis[n]; | |
1116 | } | |
1117 | ||
1118 | SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n"); | |
1119 | ||
1120 | /* Build a packet */ | |
1121 | SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n"); | |
83e0bbcb AC |
1122 | /* Sanity check the packet size */ |
1123 | if (len > 65535) | |
1124 | return -EMSGSIZE; | |
1125 | ||
1da177e4 LT |
1126 | size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; |
1127 | ||
1128 | if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) | |
1129 | return err; | |
1130 | ||
1131 | skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); | |
1132 | ||
1133 | /* | |
1134 | * Put the data on the end | |
1135 | */ | |
1136 | SOCK_DEBUG(sk, "ROSE: Appending user data\n"); | |
1137 | ||
eeeb0374 ACM |
1138 | skb_reset_transport_header(skb); |
1139 | skb_put(skb, len); | |
1da177e4 | 1140 | |
eeeb0374 | 1141 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); |
1da177e4 LT |
1142 | if (err) { |
1143 | kfree_skb(skb); | |
1144 | return err; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * If the Q BIT Include socket option is in force, the first | |
1149 | * byte of the user data is the logical value of the Q Bit. | |
1150 | */ | |
1151 | if (rose->qbitincl) { | |
1152 | qbit = skb->data[0]; | |
1153 | skb_pull(skb, 1); | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Push down the ROSE header | |
1158 | */ | |
1159 | asmptr = skb_push(skb, ROSE_MIN_LEN); | |
1160 | ||
1161 | SOCK_DEBUG(sk, "ROSE: Building Network Header.\n"); | |
1162 | ||
1163 | /* Build a ROSE Network header */ | |
1164 | asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; | |
1165 | asmptr[1] = (rose->lci >> 0) & 0xFF; | |
1166 | asmptr[2] = ROSE_DATA; | |
1167 | ||
1168 | if (qbit) | |
1169 | asmptr[0] |= ROSE_Q_BIT; | |
1170 | ||
1171 | SOCK_DEBUG(sk, "ROSE: Built header.\n"); | |
1172 | ||
1173 | SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n"); | |
1174 | ||
1175 | if (sk->sk_state != TCP_ESTABLISHED) { | |
1176 | kfree_skb(skb); | |
1177 | return -ENOTCONN; | |
1178 | } | |
1179 | ||
1180 | #ifdef M_BIT | |
1181 | #define ROSE_PACLEN (256-ROSE_MIN_LEN) | |
1182 | if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { | |
1183 | unsigned char header[ROSE_MIN_LEN]; | |
1184 | struct sk_buff *skbn; | |
1185 | int frontlen; | |
1186 | int lg; | |
1187 | ||
1188 | /* Save a copy of the Header */ | |
d626f62b | 1189 | skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); |
1da177e4 LT |
1190 | skb_pull(skb, ROSE_MIN_LEN); |
1191 | ||
1192 | frontlen = skb_headroom(skb); | |
1193 | ||
1194 | while (skb->len > 0) { | |
1195 | if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { | |
1196 | kfree_skb(skb); | |
1197 | return err; | |
1198 | } | |
1199 | ||
1200 | skbn->sk = sk; | |
1201 | skbn->free = 1; | |
1202 | skbn->arp = 1; | |
1203 | ||
1204 | skb_reserve(skbn, frontlen); | |
1205 | ||
1206 | lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; | |
1207 | ||
1208 | /* Copy the user data */ | |
d626f62b | 1209 | skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); |
1da177e4 LT |
1210 | skb_pull(skb, lg); |
1211 | ||
1212 | /* Duplicate the Header */ | |
1213 | skb_push(skbn, ROSE_MIN_LEN); | |
27d7ff46 | 1214 | skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); |
1da177e4 LT |
1215 | |
1216 | if (skb->len > 0) | |
1217 | skbn->data[2] |= M_BIT; | |
1218 | ||
1219 | skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ | |
1220 | } | |
1221 | ||
1222 | skb->free = 1; | |
1223 | kfree_skb(skb); | |
1224 | } else { | |
1225 | skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ | |
1226 | } | |
1227 | #else | |
1228 | skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ | |
1229 | #endif | |
1230 | ||
1231 | rose_kick(sk); | |
1232 | ||
1233 | return len; | |
1234 | } | |
1235 | ||
1236 | ||
1237 | static int rose_recvmsg(struct kiocb *iocb, struct socket *sock, | |
1238 | struct msghdr *msg, size_t size, int flags) | |
1239 | { | |
1240 | struct sock *sk = sock->sk; | |
1241 | struct rose_sock *rose = rose_sk(sk); | |
1242 | struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name; | |
1243 | size_t copied; | |
1244 | unsigned char *asmptr; | |
1245 | struct sk_buff *skb; | |
1246 | int n, er, qbit; | |
1247 | ||
1248 | /* | |
1249 | * This works for seqpacket too. The receiver has ordered the queue for | |
1250 | * us! We do one quick check first though | |
1251 | */ | |
1252 | if (sk->sk_state != TCP_ESTABLISHED) | |
1253 | return -ENOTCONN; | |
1254 | ||
1255 | /* Now we can treat all alike */ | |
1256 | if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) | |
1257 | return er; | |
1258 | ||
1259 | qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; | |
1260 | ||
1261 | skb_pull(skb, ROSE_MIN_LEN); | |
1262 | ||
1263 | if (rose->qbitincl) { | |
1264 | asmptr = skb_push(skb, 1); | |
1265 | *asmptr = qbit; | |
1266 | } | |
1267 | ||
badff6d0 | 1268 | skb_reset_transport_header(skb); |
1da177e4 LT |
1269 | copied = skb->len; |
1270 | ||
1271 | if (copied > size) { | |
1272 | copied = size; | |
1273 | msg->msg_flags |= MSG_TRUNC; | |
1274 | } | |
1275 | ||
1276 | skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
1277 | ||
1278 | if (srose != NULL) { | |
1279 | srose->srose_family = AF_ROSE; | |
1280 | srose->srose_addr = rose->dest_addr; | |
1281 | srose->srose_call = rose->dest_call; | |
1282 | srose->srose_ndigis = rose->dest_ndigis; | |
1283 | if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) { | |
1284 | struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name; | |
1285 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1286 | full_srose->srose_digis[n] = rose->dest_digis[n]; | |
1287 | msg->msg_namelen = sizeof(struct full_sockaddr_rose); | |
1288 | } else { | |
1289 | if (rose->dest_ndigis >= 1) { | |
1290 | srose->srose_ndigis = 1; | |
1291 | srose->srose_digi = rose->dest_digis[0]; | |
1292 | } | |
1293 | msg->msg_namelen = sizeof(struct sockaddr_rose); | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | skb_free_datagram(sk, skb); | |
1298 | ||
1299 | return copied; | |
1300 | } | |
1301 | ||
1302 | ||
1303 | static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1304 | { | |
1305 | struct sock *sk = sock->sk; | |
1306 | struct rose_sock *rose = rose_sk(sk); | |
1307 | void __user *argp = (void __user *)arg; | |
1308 | ||
1309 | switch (cmd) { | |
1310 | case TIOCOUTQ: { | |
1311 | long amount; | |
31e6d363 ED |
1312 | |
1313 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); | |
1da177e4 LT |
1314 | if (amount < 0) |
1315 | amount = 0; | |
20b7d10a | 1316 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1317 | } |
1318 | ||
1319 | case TIOCINQ: { | |
1320 | struct sk_buff *skb; | |
1321 | long amount = 0L; | |
1322 | /* These two are safe on a single CPU system as only user tasks fiddle here */ | |
1323 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) | |
1324 | amount = skb->len; | |
20b7d10a | 1325 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1326 | } |
1327 | ||
1328 | case SIOCGSTAMP: | |
20b7d10a | 1329 | return sock_get_timestamp(sk, (struct timeval __user *) argp); |
1da177e4 | 1330 | |
ae40eb1e ED |
1331 | case SIOCGSTAMPNS: |
1332 | return sock_get_timestampns(sk, (struct timespec __user *) argp); | |
1333 | ||
1da177e4 LT |
1334 | case SIOCGIFADDR: |
1335 | case SIOCSIFADDR: | |
1336 | case SIOCGIFDSTADDR: | |
1337 | case SIOCSIFDSTADDR: | |
1338 | case SIOCGIFBRDADDR: | |
1339 | case SIOCSIFBRDADDR: | |
1340 | case SIOCGIFNETMASK: | |
1341 | case SIOCSIFNETMASK: | |
1342 | case SIOCGIFMETRIC: | |
1343 | case SIOCSIFMETRIC: | |
1344 | return -EINVAL; | |
1345 | ||
1346 | case SIOCADDRT: | |
1347 | case SIOCDELRT: | |
1348 | case SIOCRSCLRRT: | |
1349 | if (!capable(CAP_NET_ADMIN)) | |
1350 | return -EPERM; | |
1351 | return rose_rt_ioctl(cmd, argp); | |
1352 | ||
1353 | case SIOCRSGCAUSE: { | |
1354 | struct rose_cause_struct rose_cause; | |
1355 | rose_cause.cause = rose->cause; | |
1356 | rose_cause.diagnostic = rose->diagnostic; | |
1357 | return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; | |
1358 | } | |
1359 | ||
1360 | case SIOCRSSCAUSE: { | |
1361 | struct rose_cause_struct rose_cause; | |
1362 | if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) | |
1363 | return -EFAULT; | |
1364 | rose->cause = rose_cause.cause; | |
1365 | rose->diagnostic = rose_cause.diagnostic; | |
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | case SIOCRSSL2CALL: | |
1370 | if (!capable(CAP_NET_ADMIN)) return -EPERM; | |
1371 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1372 | ax25_listen_release(&rose_callsign, NULL); | |
1373 | if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) | |
1374 | return -EFAULT; | |
1375 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
81dcd169 RB |
1376 | return ax25_listen_register(&rose_callsign, NULL); |
1377 | ||
1da177e4 LT |
1378 | return 0; |
1379 | ||
1380 | case SIOCRSGL2CALL: | |
1381 | return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; | |
1382 | ||
1383 | case SIOCRSACCEPT: | |
1384 | if (rose->state == ROSE_STATE_5) { | |
1385 | rose_write_internal(sk, ROSE_CALL_ACCEPTED); | |
1386 | rose_start_idletimer(sk); | |
1387 | rose->condition = 0x00; | |
1388 | rose->vs = 0; | |
1389 | rose->va = 0; | |
1390 | rose->vr = 0; | |
1391 | rose->vl = 0; | |
1392 | rose->state = ROSE_STATE_3; | |
1393 | } | |
1394 | return 0; | |
1395 | ||
1396 | default: | |
b5e5fa5e | 1397 | return -ENOIOCTLCMD; |
1da177e4 LT |
1398 | } |
1399 | ||
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | #ifdef CONFIG_PROC_FS | |
1404 | static void *rose_info_start(struct seq_file *seq, loff_t *pos) | |
95b7d924 | 1405 | __acquires(rose_list_lock) |
1da177e4 LT |
1406 | { |
1407 | int i; | |
1408 | struct sock *s; | |
1409 | struct hlist_node *node; | |
1410 | ||
1411 | spin_lock_bh(&rose_list_lock); | |
1412 | if (*pos == 0) | |
1413 | return SEQ_START_TOKEN; | |
3dcf7c5e | 1414 | |
1da177e4 LT |
1415 | i = 1; |
1416 | sk_for_each(s, node, &rose_list) { | |
1417 | if (i == *pos) | |
1418 | return s; | |
1419 | ++i; | |
1420 | } | |
1421 | return NULL; | |
1422 | } | |
1423 | ||
1424 | static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) | |
1425 | { | |
1426 | ++*pos; | |
1427 | ||
3dcf7c5e | 1428 | return (v == SEQ_START_TOKEN) ? sk_head(&rose_list) |
1da177e4 LT |
1429 | : sk_next((struct sock *)v); |
1430 | } | |
3dcf7c5e | 1431 | |
1da177e4 | 1432 | static void rose_info_stop(struct seq_file *seq, void *v) |
95b7d924 | 1433 | __releases(rose_list_lock) |
1da177e4 LT |
1434 | { |
1435 | spin_unlock_bh(&rose_list_lock); | |
1436 | } | |
1437 | ||
1438 | static int rose_info_show(struct seq_file *seq, void *v) | |
1439 | { | |
dcf777f6 | 1440 | char buf[11], rsbuf[11]; |
f75268cd | 1441 | |
1da177e4 | 1442 | if (v == SEQ_START_TOKEN) |
3dcf7c5e | 1443 | seq_puts(seq, |
1da177e4 LT |
1444 | "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"); |
1445 | ||
1446 | else { | |
1447 | struct sock *s = v; | |
1448 | struct rose_sock *rose = rose_sk(s); | |
1449 | const char *devname, *callsign; | |
1450 | const struct net_device *dev = rose->device; | |
1451 | ||
1452 | if (!dev) | |
1453 | devname = "???"; | |
1454 | else | |
1455 | devname = dev->name; | |
3dcf7c5e | 1456 | |
1da177e4 | 1457 | seq_printf(seq, "%-10s %-9s ", |
dcf777f6 RB |
1458 | rose2asc(rsbuf, &rose->dest_addr), |
1459 | ax2asc(buf, &rose->dest_call)); | |
1da177e4 LT |
1460 | |
1461 | if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) | |
1462 | callsign = "??????-?"; | |
1463 | else | |
f75268cd | 1464 | callsign = ax2asc(buf, &rose->source_call); |
1da177e4 LT |
1465 | |
1466 | seq_printf(seq, | |
1467 | "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", | |
dcf777f6 | 1468 | rose2asc(rsbuf, &rose->source_addr), |
1da177e4 LT |
1469 | callsign, |
1470 | devname, | |
1471 | rose->lci & 0x0FFF, | |
1472 | (rose->neighbour) ? rose->neighbour->number : 0, | |
1473 | rose->state, | |
1474 | rose->vs, | |
1475 | rose->vr, | |
1476 | rose->va, | |
1477 | ax25_display_timer(&rose->timer) / HZ, | |
1478 | rose->t1 / HZ, | |
1479 | rose->t2 / HZ, | |
1480 | rose->t3 / HZ, | |
1481 | rose->hb / HZ, | |
1482 | ax25_display_timer(&rose->idletimer) / (60 * HZ), | |
1483 | rose->idle / (60 * HZ), | |
31e6d363 ED |
1484 | sk_wmem_alloc_get(s), |
1485 | sk_rmem_alloc_get(s), | |
1da177e4 LT |
1486 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); |
1487 | } | |
1488 | ||
1489 | return 0; | |
1490 | } | |
1491 | ||
56b3d975 | 1492 | static const struct seq_operations rose_info_seqops = { |
1da177e4 LT |
1493 | .start = rose_info_start, |
1494 | .next = rose_info_next, | |
1495 | .stop = rose_info_stop, | |
1496 | .show = rose_info_show, | |
1497 | }; | |
1498 | ||
1499 | static int rose_info_open(struct inode *inode, struct file *file) | |
1500 | { | |
1501 | return seq_open(file, &rose_info_seqops); | |
1502 | } | |
1503 | ||
da7071d7 | 1504 | static const struct file_operations rose_info_fops = { |
1da177e4 LT |
1505 | .owner = THIS_MODULE, |
1506 | .open = rose_info_open, | |
1507 | .read = seq_read, | |
1508 | .llseek = seq_lseek, | |
1509 | .release = seq_release, | |
1510 | }; | |
1511 | #endif /* CONFIG_PROC_FS */ | |
1512 | ||
ec1b4cf7 | 1513 | static const struct net_proto_family rose_family_ops = { |
1da177e4 LT |
1514 | .family = PF_ROSE, |
1515 | .create = rose_create, | |
1516 | .owner = THIS_MODULE, | |
1517 | }; | |
1518 | ||
5708e868 | 1519 | static const struct proto_ops rose_proto_ops = { |
1da177e4 LT |
1520 | .family = PF_ROSE, |
1521 | .owner = THIS_MODULE, | |
1522 | .release = rose_release, | |
1523 | .bind = rose_bind, | |
1524 | .connect = rose_connect, | |
1525 | .socketpair = sock_no_socketpair, | |
1526 | .accept = rose_accept, | |
1527 | .getname = rose_getname, | |
1528 | .poll = datagram_poll, | |
1529 | .ioctl = rose_ioctl, | |
1530 | .listen = rose_listen, | |
1531 | .shutdown = sock_no_shutdown, | |
1532 | .setsockopt = rose_setsockopt, | |
1533 | .getsockopt = rose_getsockopt, | |
1534 | .sendmsg = rose_sendmsg, | |
1535 | .recvmsg = rose_recvmsg, | |
1536 | .mmap = sock_no_mmap, | |
1537 | .sendpage = sock_no_sendpage, | |
1538 | }; | |
1539 | ||
1540 | static struct notifier_block rose_dev_notifier = { | |
1541 | .notifier_call = rose_device_event, | |
1542 | }; | |
1543 | ||
1544 | static struct net_device **dev_rose; | |
1545 | ||
8d5cf596 RB |
1546 | static struct ax25_protocol rose_pid = { |
1547 | .pid = AX25_P_ROSE, | |
1548 | .func = rose_route_frame | |
1549 | }; | |
1550 | ||
a4282717 RB |
1551 | static struct ax25_linkfail rose_linkfail_notifier = { |
1552 | .func = rose_link_failed | |
1553 | }; | |
1554 | ||
1da177e4 LT |
1555 | static int __init rose_proto_init(void) |
1556 | { | |
1557 | int i; | |
a83cd2cc | 1558 | int rc; |
1da177e4 | 1559 | |
a83cd2cc AD |
1560 | if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { |
1561 | printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); | |
1562 | rc = -EINVAL; | |
1563 | goto out; | |
1564 | } | |
1565 | ||
1566 | rc = proto_register(&rose_proto, 0); | |
1da177e4 LT |
1567 | if (rc != 0) |
1568 | goto out; | |
1569 | ||
1570 | rose_callsign = null_ax25_address; | |
1571 | ||
1b30dd35 | 1572 | dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); |
1da177e4 LT |
1573 | if (dev_rose == NULL) { |
1574 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); | |
a83cd2cc AD |
1575 | rc = -ENOMEM; |
1576 | goto out_proto_unregister; | |
1da177e4 LT |
1577 | } |
1578 | ||
1da177e4 LT |
1579 | for (i = 0; i < rose_ndevs; i++) { |
1580 | struct net_device *dev; | |
1581 | char name[IFNAMSIZ]; | |
1582 | ||
1583 | sprintf(name, "rose%d", i); | |
d289d120 | 1584 | dev = alloc_netdev(0, name, rose_setup); |
1da177e4 LT |
1585 | if (!dev) { |
1586 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); | |
70ff3b66 | 1587 | rc = -ENOMEM; |
1da177e4 LT |
1588 | goto fail; |
1589 | } | |
70ff3b66 AD |
1590 | rc = register_netdev(dev); |
1591 | if (rc) { | |
520d1b83 | 1592 | printk(KERN_ERR "ROSE: netdevice registration failed\n"); |
1da177e4 LT |
1593 | free_netdev(dev); |
1594 | goto fail; | |
1595 | } | |
c773e847 | 1596 | rose_set_lockdep_key(dev); |
1da177e4 LT |
1597 | dev_rose[i] = dev; |
1598 | } | |
1599 | ||
1600 | sock_register(&rose_family_ops); | |
1601 | register_netdevice_notifier(&rose_dev_notifier); | |
1da177e4 | 1602 | |
8d5cf596 | 1603 | ax25_register_pid(&rose_pid); |
a4282717 | 1604 | ax25_linkfail_register(&rose_linkfail_notifier); |
1da177e4 LT |
1605 | |
1606 | #ifdef CONFIG_SYSCTL | |
1607 | rose_register_sysctl(); | |
1608 | #endif | |
1609 | rose_loopback_init(); | |
1610 | ||
1611 | rose_add_loopback_neigh(); | |
1612 | ||
457c4cbc EB |
1613 | proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops); |
1614 | proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops); | |
1615 | proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops); | |
1616 | proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops); | |
1da177e4 LT |
1617 | out: |
1618 | return rc; | |
1619 | fail: | |
1620 | while (--i >= 0) { | |
1621 | unregister_netdev(dev_rose[i]); | |
1622 | free_netdev(dev_rose[i]); | |
1623 | } | |
1624 | kfree(dev_rose); | |
a83cd2cc | 1625 | out_proto_unregister: |
1da177e4 | 1626 | proto_unregister(&rose_proto); |
70ff3b66 | 1627 | goto out; |
1da177e4 LT |
1628 | } |
1629 | module_init(rose_proto_init); | |
1630 | ||
1631 | module_param(rose_ndevs, int, 0); | |
1632 | MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); | |
1633 | ||
1634 | MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); | |
1635 | MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); | |
1636 | MODULE_LICENSE("GPL"); | |
1637 | MODULE_ALIAS_NETPROTO(PF_ROSE); | |
1638 | ||
1639 | static void __exit rose_exit(void) | |
1640 | { | |
1641 | int i; | |
1642 | ||
457c4cbc EB |
1643 | proc_net_remove(&init_net, "rose"); |
1644 | proc_net_remove(&init_net, "rose_neigh"); | |
1645 | proc_net_remove(&init_net, "rose_nodes"); | |
1646 | proc_net_remove(&init_net, "rose_routes"); | |
1da177e4 LT |
1647 | rose_loopback_clear(); |
1648 | ||
1649 | rose_rt_free(); | |
1650 | ||
1651 | ax25_protocol_release(AX25_P_ROSE); | |
a4282717 | 1652 | ax25_linkfail_release(&rose_linkfail_notifier); |
1da177e4 LT |
1653 | |
1654 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1655 | ax25_listen_release(&rose_callsign, NULL); | |
1656 | ||
1657 | #ifdef CONFIG_SYSCTL | |
1658 | rose_unregister_sysctl(); | |
1659 | #endif | |
1660 | unregister_netdevice_notifier(&rose_dev_notifier); | |
1661 | ||
1662 | sock_unregister(PF_ROSE); | |
1663 | ||
1664 | for (i = 0; i < rose_ndevs; i++) { | |
1665 | struct net_device *dev = dev_rose[i]; | |
1666 | ||
1667 | if (dev) { | |
1668 | unregister_netdev(dev); | |
1669 | free_netdev(dev); | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | kfree(dev_rose); | |
1674 | proto_unregister(&rose_proto); | |
1675 | } | |
1676 | ||
1677 | module_exit(rose_exit); |