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> | |
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 | ||
66 | static struct proto_ops rose_proto_ops; | |
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 | */ | |
95 | const char *rose2asc(const rose_address *addr) | |
96 | { | |
97 | static char buffer[11]; | |
98 | ||
99 | if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 && | |
100 | addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 && | |
101 | addr->rose_addr[4] == 0x00) { | |
102 | strcpy(buffer, "*"); | |
103 | } else { | |
104 | sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF, | |
105 | addr->rose_addr[1] & 0xFF, | |
106 | addr->rose_addr[2] & 0xFF, | |
107 | addr->rose_addr[3] & 0xFF, | |
108 | addr->rose_addr[4] & 0xFF); | |
109 | } | |
110 | ||
111 | return buffer; | |
112 | } | |
113 | ||
114 | /* | |
115 | * Compare two ROSE addresses, 0 == equal. | |
116 | */ | |
117 | int rosecmp(rose_address *addr1, rose_address *addr2) | |
118 | { | |
119 | int i; | |
120 | ||
121 | for (i = 0; i < 5; i++) | |
122 | if (addr1->rose_addr[i] != addr2->rose_addr[i]) | |
123 | return 1; | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | /* | |
129 | * Compare two ROSE addresses for only mask digits, 0 == equal. | |
130 | */ | |
131 | int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask) | |
132 | { | |
95b7d924 | 133 | unsigned int i, j; |
1da177e4 LT |
134 | |
135 | if (mask > 10) | |
136 | return 1; | |
137 | ||
138 | for (i = 0; i < mask; i++) { | |
139 | j = i / 2; | |
140 | ||
141 | if ((i % 2) != 0) { | |
142 | if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F)) | |
143 | return 1; | |
144 | } else { | |
145 | if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0)) | |
146 | return 1; | |
147 | } | |
148 | } | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | /* | |
154 | * Socket removal during an interrupt is now safe. | |
155 | */ | |
156 | static void rose_remove_socket(struct sock *sk) | |
157 | { | |
158 | spin_lock_bh(&rose_list_lock); | |
159 | sk_del_node_init(sk); | |
160 | spin_unlock_bh(&rose_list_lock); | |
161 | } | |
162 | ||
163 | /* | |
164 | * Kill all bound sockets on a broken link layer connection to a | |
165 | * particular neighbour. | |
166 | */ | |
167 | void rose_kill_by_neigh(struct rose_neigh *neigh) | |
168 | { | |
169 | struct sock *s; | |
170 | struct hlist_node *node; | |
171 | ||
172 | spin_lock_bh(&rose_list_lock); | |
173 | sk_for_each(s, node, &rose_list) { | |
174 | struct rose_sock *rose = rose_sk(s); | |
175 | ||
176 | if (rose->neighbour == neigh) { | |
177 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
178 | rose->neighbour->use--; | |
179 | rose->neighbour = NULL; | |
180 | } | |
181 | } | |
182 | spin_unlock_bh(&rose_list_lock); | |
183 | } | |
184 | ||
185 | /* | |
186 | * Kill all bound sockets on a dropped device. | |
187 | */ | |
188 | static void rose_kill_by_device(struct net_device *dev) | |
189 | { | |
190 | struct sock *s; | |
191 | struct hlist_node *node; | |
192 | ||
193 | spin_lock_bh(&rose_list_lock); | |
194 | sk_for_each(s, node, &rose_list) { | |
195 | struct rose_sock *rose = rose_sk(s); | |
196 | ||
197 | if (rose->device == dev) { | |
198 | rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); | |
199 | rose->neighbour->use--; | |
200 | rose->device = NULL; | |
201 | } | |
202 | } | |
203 | spin_unlock_bh(&rose_list_lock); | |
204 | } | |
205 | ||
206 | /* | |
207 | * Handle device status changes. | |
208 | */ | |
209 | static int rose_device_event(struct notifier_block *this, unsigned long event, | |
210 | void *ptr) | |
211 | { | |
212 | struct net_device *dev = (struct net_device *)ptr; | |
213 | ||
721499e8 | 214 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
215 | return NOTIFY_DONE; |
216 | ||
1da177e4 LT |
217 | if (event != NETDEV_DOWN) |
218 | return NOTIFY_DONE; | |
219 | ||
220 | switch (dev->type) { | |
221 | case ARPHRD_ROSE: | |
222 | rose_kill_by_device(dev); | |
223 | break; | |
224 | case ARPHRD_AX25: | |
225 | rose_link_device_down(dev); | |
226 | rose_rt_device_down(dev); | |
227 | break; | |
228 | } | |
229 | ||
230 | return NOTIFY_DONE; | |
231 | } | |
232 | ||
233 | /* | |
234 | * Add a socket to the bound sockets list. | |
235 | */ | |
236 | static void rose_insert_socket(struct sock *sk) | |
237 | { | |
238 | ||
239 | spin_lock_bh(&rose_list_lock); | |
240 | sk_add_node(sk, &rose_list); | |
241 | spin_unlock_bh(&rose_list_lock); | |
242 | } | |
243 | ||
244 | /* | |
245 | * Find a socket that wants to accept the Call Request we just | |
246 | * received. | |
247 | */ | |
248 | static struct sock *rose_find_listener(rose_address *addr, ax25_address *call) | |
249 | { | |
250 | struct sock *s; | |
251 | struct hlist_node *node; | |
252 | ||
253 | spin_lock_bh(&rose_list_lock); | |
254 | sk_for_each(s, node, &rose_list) { | |
255 | struct rose_sock *rose = rose_sk(s); | |
256 | ||
257 | if (!rosecmp(&rose->source_addr, addr) && | |
258 | !ax25cmp(&rose->source_call, call) && | |
259 | !rose->source_ndigis && s->sk_state == TCP_LISTEN) | |
260 | goto found; | |
261 | } | |
262 | ||
263 | sk_for_each(s, node, &rose_list) { | |
264 | struct rose_sock *rose = rose_sk(s); | |
265 | ||
266 | if (!rosecmp(&rose->source_addr, addr) && | |
267 | !ax25cmp(&rose->source_call, &null_ax25_address) && | |
268 | s->sk_state == TCP_LISTEN) | |
269 | goto found; | |
270 | } | |
271 | s = NULL; | |
272 | found: | |
273 | spin_unlock_bh(&rose_list_lock); | |
274 | return s; | |
275 | } | |
276 | ||
277 | /* | |
278 | * Find a connected ROSE socket given my LCI and device. | |
279 | */ | |
280 | struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh) | |
281 | { | |
282 | struct sock *s; | |
283 | struct hlist_node *node; | |
284 | ||
285 | spin_lock_bh(&rose_list_lock); | |
286 | sk_for_each(s, node, &rose_list) { | |
287 | struct rose_sock *rose = rose_sk(s); | |
288 | ||
289 | if (rose->lci == lci && rose->neighbour == neigh) | |
290 | goto found; | |
291 | } | |
292 | s = NULL; | |
293 | found: | |
294 | spin_unlock_bh(&rose_list_lock); | |
295 | return s; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Find a unique LCI for a given device. | |
300 | */ | |
301 | unsigned int rose_new_lci(struct rose_neigh *neigh) | |
302 | { | |
303 | int lci; | |
304 | ||
305 | if (neigh->dce_mode) { | |
306 | for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++) | |
307 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
308 | return lci; | |
309 | } else { | |
310 | for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--) | |
311 | if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL) | |
312 | return lci; | |
313 | } | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | /* | |
319 | * Deferred destroy. | |
320 | */ | |
321 | void rose_destroy_socket(struct sock *); | |
322 | ||
323 | /* | |
324 | * Handler for deferred kills. | |
325 | */ | |
326 | static void rose_destroy_timer(unsigned long data) | |
327 | { | |
328 | rose_destroy_socket((struct sock *)data); | |
329 | } | |
330 | ||
331 | /* | |
332 | * This is called from user mode and the timers. Thus it protects itself | |
333 | * against interrupt users but doesn't worry about being called during | |
334 | * work. Once it is removed from the queue no interrupt or bottom half | |
335 | * will touch it and we are (fairly 8-) ) safe. | |
336 | */ | |
337 | void rose_destroy_socket(struct sock *sk) | |
338 | { | |
339 | struct sk_buff *skb; | |
340 | ||
341 | rose_remove_socket(sk); | |
342 | rose_stop_heartbeat(sk); | |
343 | rose_stop_idletimer(sk); | |
344 | rose_stop_timer(sk); | |
345 | ||
346 | rose_clear_queues(sk); /* Flush the queues */ | |
347 | ||
348 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { | |
349 | if (skb->sk != sk) { /* A pending connection */ | |
350 | /* Queue the unaccepted socket for death */ | |
351 | sock_set_flag(skb->sk, SOCK_DEAD); | |
352 | rose_start_heartbeat(skb->sk); | |
353 | rose_sk(skb->sk)->state = ROSE_STATE_0; | |
354 | } | |
355 | ||
356 | kfree_skb(skb); | |
357 | } | |
358 | ||
359 | if (atomic_read(&sk->sk_wmem_alloc) || | |
360 | atomic_read(&sk->sk_rmem_alloc)) { | |
361 | /* Defer: outstanding buffers */ | |
b24b8a24 PE |
362 | setup_timer(&sk->sk_timer, rose_destroy_timer, |
363 | (unsigned long)sk); | |
1da177e4 | 364 | sk->sk_timer.expires = jiffies + 10 * HZ; |
1da177e4 LT |
365 | add_timer(&sk->sk_timer); |
366 | } else | |
367 | sock_put(sk); | |
368 | } | |
369 | ||
370 | /* | |
371 | * Handling for system calls applied via the various interfaces to a | |
372 | * ROSE socket object. | |
373 | */ | |
374 | ||
375 | static int rose_setsockopt(struct socket *sock, int level, int optname, | |
376 | char __user *optval, int optlen) | |
377 | { | |
378 | struct sock *sk = sock->sk; | |
379 | struct rose_sock *rose = rose_sk(sk); | |
380 | int opt; | |
381 | ||
382 | if (level != SOL_ROSE) | |
383 | return -ENOPROTOOPT; | |
384 | ||
385 | if (optlen < sizeof(int)) | |
386 | return -EINVAL; | |
387 | ||
388 | if (get_user(opt, (int __user *)optval)) | |
389 | return -EFAULT; | |
390 | ||
391 | switch (optname) { | |
392 | case ROSE_DEFER: | |
393 | rose->defer = opt ? 1 : 0; | |
394 | return 0; | |
395 | ||
396 | case ROSE_T1: | |
397 | if (opt < 1) | |
398 | return -EINVAL; | |
399 | rose->t1 = opt * HZ; | |
400 | return 0; | |
401 | ||
402 | case ROSE_T2: | |
403 | if (opt < 1) | |
404 | return -EINVAL; | |
405 | rose->t2 = opt * HZ; | |
406 | return 0; | |
407 | ||
408 | case ROSE_T3: | |
409 | if (opt < 1) | |
410 | return -EINVAL; | |
411 | rose->t3 = opt * HZ; | |
412 | return 0; | |
413 | ||
414 | case ROSE_HOLDBACK: | |
415 | if (opt < 1) | |
416 | return -EINVAL; | |
417 | rose->hb = opt * HZ; | |
418 | return 0; | |
419 | ||
420 | case ROSE_IDLE: | |
421 | if (opt < 0) | |
422 | return -EINVAL; | |
423 | rose->idle = opt * 60 * HZ; | |
424 | return 0; | |
425 | ||
426 | case ROSE_QBITINCL: | |
427 | rose->qbitincl = opt ? 1 : 0; | |
428 | return 0; | |
429 | ||
430 | default: | |
431 | return -ENOPROTOOPT; | |
432 | } | |
433 | } | |
434 | ||
435 | static int rose_getsockopt(struct socket *sock, int level, int optname, | |
436 | char __user *optval, int __user *optlen) | |
437 | { | |
438 | struct sock *sk = sock->sk; | |
439 | struct rose_sock *rose = rose_sk(sk); | |
440 | int val = 0; | |
441 | int len; | |
442 | ||
443 | if (level != SOL_ROSE) | |
444 | return -ENOPROTOOPT; | |
445 | ||
446 | if (get_user(len, optlen)) | |
447 | return -EFAULT; | |
448 | ||
449 | if (len < 0) | |
450 | return -EINVAL; | |
451 | ||
452 | switch (optname) { | |
453 | case ROSE_DEFER: | |
454 | val = rose->defer; | |
455 | break; | |
456 | ||
457 | case ROSE_T1: | |
458 | val = rose->t1 / HZ; | |
459 | break; | |
460 | ||
461 | case ROSE_T2: | |
462 | val = rose->t2 / HZ; | |
463 | break; | |
464 | ||
465 | case ROSE_T3: | |
466 | val = rose->t3 / HZ; | |
467 | break; | |
468 | ||
469 | case ROSE_HOLDBACK: | |
470 | val = rose->hb / HZ; | |
471 | break; | |
472 | ||
473 | case ROSE_IDLE: | |
474 | val = rose->idle / (60 * HZ); | |
475 | break; | |
476 | ||
477 | case ROSE_QBITINCL: | |
478 | val = rose->qbitincl; | |
479 | break; | |
480 | ||
481 | default: | |
482 | return -ENOPROTOOPT; | |
483 | } | |
484 | ||
485 | len = min_t(unsigned int, len, sizeof(int)); | |
486 | ||
487 | if (put_user(len, optlen)) | |
488 | return -EFAULT; | |
489 | ||
490 | return copy_to_user(optval, &val, len) ? -EFAULT : 0; | |
491 | } | |
492 | ||
493 | static int rose_listen(struct socket *sock, int backlog) | |
494 | { | |
495 | struct sock *sk = sock->sk; | |
496 | ||
497 | if (sk->sk_state != TCP_LISTEN) { | |
498 | struct rose_sock *rose = rose_sk(sk); | |
499 | ||
500 | rose->dest_ndigis = 0; | |
501 | memset(&rose->dest_addr, 0, ROSE_ADDR_LEN); | |
502 | memset(&rose->dest_call, 0, AX25_ADDR_LEN); | |
503 | memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS); | |
504 | sk->sk_max_ack_backlog = backlog; | |
505 | sk->sk_state = TCP_LISTEN; | |
506 | return 0; | |
507 | } | |
508 | ||
509 | return -EOPNOTSUPP; | |
510 | } | |
511 | ||
512 | static struct proto rose_proto = { | |
513 | .name = "ROSE", | |
514 | .owner = THIS_MODULE, | |
515 | .obj_size = sizeof(struct rose_sock), | |
516 | }; | |
517 | ||
1b8d7ae4 | 518 | static int rose_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
519 | { |
520 | struct sock *sk; | |
521 | struct rose_sock *rose; | |
522 | ||
1b8d7ae4 EB |
523 | if (net != &init_net) |
524 | return -EAFNOSUPPORT; | |
525 | ||
1da177e4 LT |
526 | if (sock->type != SOCK_SEQPACKET || protocol != 0) |
527 | return -ESOCKTNOSUPPORT; | |
528 | ||
6257ff21 PE |
529 | sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto); |
530 | if (sk == NULL) | |
1da177e4 LT |
531 | return -ENOMEM; |
532 | ||
533 | rose = rose_sk(sk); | |
534 | ||
535 | sock_init_data(sock, sk); | |
536 | ||
537 | skb_queue_head_init(&rose->ack_queue); | |
538 | #ifdef M_BIT | |
539 | skb_queue_head_init(&rose->frag_queue); | |
540 | rose->fraglen = 0; | |
541 | #endif | |
542 | ||
543 | sock->ops = &rose_proto_ops; | |
544 | sk->sk_protocol = protocol; | |
545 | ||
546 | init_timer(&rose->timer); | |
547 | init_timer(&rose->idletimer); | |
548 | ||
82e84249 RB |
549 | rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout); |
550 | rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout); | |
551 | rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout); | |
552 | rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout); | |
553 | rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout); | |
1da177e4 LT |
554 | |
555 | rose->state = ROSE_STATE_0; | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
560 | static struct sock *rose_make_new(struct sock *osk) | |
561 | { | |
562 | struct sock *sk; | |
563 | struct rose_sock *rose, *orose; | |
564 | ||
565 | if (osk->sk_type != SOCK_SEQPACKET) | |
566 | return NULL; | |
567 | ||
3b1e0a65 | 568 | sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto); |
6257ff21 | 569 | if (sk == NULL) |
1da177e4 LT |
570 | return NULL; |
571 | ||
572 | rose = rose_sk(sk); | |
573 | ||
574 | sock_init_data(NULL, sk); | |
575 | ||
576 | skb_queue_head_init(&rose->ack_queue); | |
577 | #ifdef M_BIT | |
578 | skb_queue_head_init(&rose->frag_queue); | |
579 | rose->fraglen = 0; | |
580 | #endif | |
581 | ||
582 | sk->sk_type = osk->sk_type; | |
1da177e4 LT |
583 | sk->sk_priority = osk->sk_priority; |
584 | sk->sk_protocol = osk->sk_protocol; | |
585 | sk->sk_rcvbuf = osk->sk_rcvbuf; | |
586 | sk->sk_sndbuf = osk->sk_sndbuf; | |
587 | sk->sk_state = TCP_ESTABLISHED; | |
53b924b3 | 588 | sock_copy_flags(sk, osk); |
1da177e4 LT |
589 | |
590 | init_timer(&rose->timer); | |
591 | init_timer(&rose->idletimer); | |
592 | ||
593 | orose = rose_sk(osk); | |
594 | rose->t1 = orose->t1; | |
595 | rose->t2 = orose->t2; | |
596 | rose->t3 = orose->t3; | |
597 | rose->hb = orose->hb; | |
598 | rose->idle = orose->idle; | |
599 | rose->defer = orose->defer; | |
600 | rose->device = orose->device; | |
601 | rose->qbitincl = orose->qbitincl; | |
602 | ||
603 | return sk; | |
604 | } | |
605 | ||
606 | static int rose_release(struct socket *sock) | |
607 | { | |
608 | struct sock *sk = sock->sk; | |
609 | struct rose_sock *rose; | |
610 | ||
611 | if (sk == NULL) return 0; | |
612 | ||
4965291a JP |
613 | sock_hold(sk); |
614 | sock_orphan(sk); | |
615 | lock_sock(sk); | |
1da177e4 LT |
616 | rose = rose_sk(sk); |
617 | ||
618 | switch (rose->state) { | |
619 | case ROSE_STATE_0: | |
4965291a | 620 | release_sock(sk); |
1da177e4 | 621 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 622 | lock_sock(sk); |
1da177e4 LT |
623 | rose_destroy_socket(sk); |
624 | break; | |
625 | ||
626 | case ROSE_STATE_2: | |
627 | rose->neighbour->use--; | |
4965291a | 628 | release_sock(sk); |
1da177e4 | 629 | rose_disconnect(sk, 0, -1, -1); |
4965291a | 630 | lock_sock(sk); |
1da177e4 LT |
631 | rose_destroy_socket(sk); |
632 | break; | |
633 | ||
634 | case ROSE_STATE_1: | |
635 | case ROSE_STATE_3: | |
636 | case ROSE_STATE_4: | |
637 | case ROSE_STATE_5: | |
638 | rose_clear_queues(sk); | |
639 | rose_stop_idletimer(sk); | |
640 | rose_write_internal(sk, ROSE_CLEAR_REQUEST); | |
641 | rose_start_t3timer(sk); | |
642 | rose->state = ROSE_STATE_2; | |
643 | sk->sk_state = TCP_CLOSE; | |
644 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
645 | sk->sk_state_change(sk); | |
646 | sock_set_flag(sk, SOCK_DEAD); | |
647 | sock_set_flag(sk, SOCK_DESTROY); | |
648 | break; | |
649 | ||
650 | default: | |
651 | break; | |
652 | } | |
653 | ||
654 | sock->sk = NULL; | |
4965291a JP |
655 | release_sock(sk); |
656 | sock_put(sk); | |
1da177e4 LT |
657 | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
662 | { | |
663 | struct sock *sk = sock->sk; | |
664 | struct rose_sock *rose = rose_sk(sk); | |
665 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
666 | struct net_device *dev; | |
01d7dd0e RB |
667 | ax25_address *source; |
668 | ax25_uid_assoc *user; | |
1da177e4 LT |
669 | int n; |
670 | ||
671 | if (!sock_flag(sk, SOCK_ZAPPED)) | |
672 | return -EINVAL; | |
673 | ||
674 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
675 | return -EINVAL; | |
676 | ||
677 | if (addr->srose_family != AF_ROSE) | |
678 | return -EINVAL; | |
679 | ||
680 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
681 | return -EINVAL; | |
682 | ||
683 | if (addr->srose_ndigis > ROSE_MAX_DIGIS) | |
684 | return -EINVAL; | |
685 | ||
686 | if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) { | |
687 | SOCK_DEBUG(sk, "ROSE: bind failed: invalid address\n"); | |
688 | return -EADDRNOTAVAIL; | |
689 | } | |
690 | ||
691 | source = &addr->srose_call; | |
692 | ||
c2a2b8d3 | 693 | user = ax25_findbyuid(current_euid()); |
01d7dd0e RB |
694 | if (user) { |
695 | rose->source_call = user->call; | |
696 | ax25_uid_put(user); | |
697 | } else { | |
1da177e4 LT |
698 | if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) |
699 | return -EACCES; | |
01d7dd0e | 700 | rose->source_call = *source; |
1da177e4 LT |
701 | } |
702 | ||
703 | rose->source_addr = addr->srose_addr; | |
1da177e4 LT |
704 | rose->device = dev; |
705 | rose->source_ndigis = addr->srose_ndigis; | |
706 | ||
707 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
708 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
709 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
710 | rose->source_digis[n] = full_addr->srose_digis[n]; | |
711 | } else { | |
712 | if (rose->source_ndigis == 1) { | |
713 | rose->source_digis[0] = addr->srose_digi; | |
714 | } | |
715 | } | |
716 | ||
717 | rose_insert_socket(sk); | |
718 | ||
719 | sock_reset_flag(sk, SOCK_ZAPPED); | |
720 | SOCK_DEBUG(sk, "ROSE: socket is bound\n"); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) | |
725 | { | |
726 | struct sock *sk = sock->sk; | |
727 | struct rose_sock *rose = rose_sk(sk); | |
728 | struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr; | |
729 | unsigned char cause, diagnostic; | |
1da177e4 | 730 | struct net_device *dev; |
01d7dd0e | 731 | ax25_uid_assoc *user; |
2536b94a | 732 | int n, err = 0; |
1da177e4 LT |
733 | |
734 | if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose)) | |
735 | return -EINVAL; | |
736 | ||
737 | if (addr->srose_family != AF_ROSE) | |
738 | return -EINVAL; | |
739 | ||
740 | if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1) | |
741 | return -EINVAL; | |
742 | ||
743 | if (addr->srose_ndigis > ROSE_MAX_DIGIS) | |
744 | return -EINVAL; | |
745 | ||
746 | /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */ | |
747 | if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS) | |
748 | return -EINVAL; | |
749 | ||
2536b94a RB |
750 | lock_sock(sk); |
751 | ||
752 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
753 | /* Connect completed during a ERESTARTSYS event */ | |
754 | sock->state = SS_CONNECTED; | |
755 | goto out_release; | |
756 | } | |
757 | ||
758 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
759 | sock->state = SS_UNCONNECTED; | |
760 | err = -ECONNREFUSED; | |
761 | goto out_release; | |
762 | } | |
763 | ||
764 | if (sk->sk_state == TCP_ESTABLISHED) { | |
765 | /* No reconnect on a seqpacket socket */ | |
766 | err = -EISCONN; | |
767 | goto out_release; | |
768 | } | |
769 | ||
770 | sk->sk_state = TCP_CLOSE; | |
771 | sock->state = SS_UNCONNECTED; | |
772 | ||
1da177e4 | 773 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, |
fe2c802a | 774 | &diagnostic, 0); |
43837b1e BP |
775 | if (!rose->neighbour) { |
776 | err = -ENETUNREACH; | |
777 | goto out_release; | |
778 | } | |
1da177e4 LT |
779 | |
780 | rose->lci = rose_new_lci(rose->neighbour); | |
2536b94a RB |
781 | if (!rose->lci) { |
782 | err = -ENETUNREACH; | |
783 | goto out_release; | |
784 | } | |
1da177e4 LT |
785 | |
786 | if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */ | |
787 | sock_reset_flag(sk, SOCK_ZAPPED); | |
788 | ||
2536b94a RB |
789 | if ((dev = rose_dev_first()) == NULL) { |
790 | err = -ENETUNREACH; | |
791 | goto out_release; | |
792 | } | |
1da177e4 | 793 | |
c2a2b8d3 | 794 | user = ax25_findbyuid(current_euid()); |
2536b94a RB |
795 | if (!user) { |
796 | err = -EINVAL; | |
797 | goto out_release; | |
798 | } | |
1da177e4 LT |
799 | |
800 | memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN); | |
01d7dd0e | 801 | rose->source_call = user->call; |
1da177e4 | 802 | rose->device = dev; |
01d7dd0e | 803 | ax25_uid_put(user); |
1da177e4 LT |
804 | |
805 | rose_insert_socket(sk); /* Finish the bind */ | |
806 | } | |
d85838c5 | 807 | rose_try_next_neigh: |
1da177e4 LT |
808 | rose->dest_addr = addr->srose_addr; |
809 | rose->dest_call = addr->srose_call; | |
810 | rose->rand = ((long)rose & 0xFFFF) + rose->lci; | |
811 | rose->dest_ndigis = addr->srose_ndigis; | |
812 | ||
813 | if (addr_len == sizeof(struct full_sockaddr_rose)) { | |
814 | struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr; | |
815 | for (n = 0 ; n < addr->srose_ndigis ; n++) | |
816 | rose->dest_digis[n] = full_addr->srose_digis[n]; | |
817 | } else { | |
818 | if (rose->dest_ndigis == 1) { | |
819 | rose->dest_digis[0] = addr->srose_digi; | |
820 | } | |
821 | } | |
822 | ||
823 | /* Move to connecting socket, start sending Connect Requests */ | |
824 | sock->state = SS_CONNECTING; | |
825 | sk->sk_state = TCP_SYN_SENT; | |
826 | ||
827 | rose->state = ROSE_STATE_1; | |
828 | ||
829 | rose->neighbour->use++; | |
830 | ||
831 | rose_write_internal(sk, ROSE_CALL_REQUEST); | |
832 | rose_start_heartbeat(sk); | |
833 | rose_start_t1timer(sk); | |
834 | ||
835 | /* Now the loop */ | |
2536b94a RB |
836 | if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) { |
837 | err = -EINPROGRESS; | |
838 | goto out_release; | |
839 | } | |
1da177e4 LT |
840 | |
841 | /* | |
842 | * A Connect Ack with Choke or timeout or failed routing will go to | |
843 | * closed. | |
844 | */ | |
845 | if (sk->sk_state == TCP_SYN_SENT) { | |
75606dc6 | 846 | DEFINE_WAIT(wait); |
1da177e4 | 847 | |
1da177e4 | 848 | for (;;) { |
75606dc6 | 849 | prepare_to_wait(sk->sk_sleep, &wait, |
6140efb5 | 850 | TASK_INTERRUPTIBLE); |
1da177e4 LT |
851 | if (sk->sk_state != TCP_SYN_SENT) |
852 | break; | |
75606dc6 RB |
853 | if (!signal_pending(current)) { |
854 | release_sock(sk); | |
1da177e4 | 855 | schedule(); |
2536b94a | 856 | lock_sock(sk); |
1da177e4 LT |
857 | continue; |
858 | } | |
75606dc6 RB |
859 | err = -ERESTARTSYS; |
860 | break; | |
1da177e4 | 861 | } |
75606dc6 RB |
862 | finish_wait(sk->sk_sleep, &wait); |
863 | ||
864 | if (err) | |
865 | goto out_release; | |
1da177e4 LT |
866 | } |
867 | ||
868 | if (sk->sk_state != TCP_ESTABLISHED) { | |
d85838c5 | 869 | /* Try next neighbour */ |
fe2c802a | 870 | rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic, 0); |
d85838c5 RB |
871 | if (rose->neighbour) |
872 | goto rose_try_next_neigh; | |
2536b94a RB |
873 | |
874 | /* No more neighbours */ | |
1da177e4 | 875 | sock->state = SS_UNCONNECTED; |
2536b94a RB |
876 | err = sock_error(sk); /* Always set at this point */ |
877 | goto out_release; | |
1da177e4 LT |
878 | } |
879 | ||
880 | sock->state = SS_CONNECTED; | |
881 | ||
2536b94a RB |
882 | out_release: |
883 | release_sock(sk); | |
884 | ||
885 | return err; | |
1da177e4 LT |
886 | } |
887 | ||
888 | static int rose_accept(struct socket *sock, struct socket *newsock, int flags) | |
889 | { | |
1da177e4 LT |
890 | struct sk_buff *skb; |
891 | struct sock *newsk; | |
75606dc6 | 892 | DEFINE_WAIT(wait); |
1da177e4 LT |
893 | struct sock *sk; |
894 | int err = 0; | |
895 | ||
896 | if ((sk = sock->sk) == NULL) | |
897 | return -EINVAL; | |
898 | ||
899 | lock_sock(sk); | |
900 | if (sk->sk_type != SOCK_SEQPACKET) { | |
901 | err = -EOPNOTSUPP; | |
75606dc6 | 902 | goto out_release; |
1da177e4 LT |
903 | } |
904 | ||
905 | if (sk->sk_state != TCP_LISTEN) { | |
906 | err = -EINVAL; | |
75606dc6 | 907 | goto out_release; |
1da177e4 LT |
908 | } |
909 | ||
910 | /* | |
911 | * The write queue this time is holding sockets ready to use | |
912 | * hooked into the SABM we saved | |
913 | */ | |
1da177e4 | 914 | for (;;) { |
75606dc6 RB |
915 | prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE); |
916 | ||
1da177e4 LT |
917 | skb = skb_dequeue(&sk->sk_receive_queue); |
918 | if (skb) | |
919 | break; | |
920 | ||
1da177e4 | 921 | if (flags & O_NONBLOCK) { |
75606dc6 RB |
922 | err = -EWOULDBLOCK; |
923 | break; | |
1da177e4 | 924 | } |
75606dc6 RB |
925 | if (!signal_pending(current)) { |
926 | release_sock(sk); | |
1da177e4 LT |
927 | schedule(); |
928 | lock_sock(sk); | |
929 | continue; | |
930 | } | |
75606dc6 RB |
931 | err = -ERESTARTSYS; |
932 | break; | |
1da177e4 | 933 | } |
75606dc6 RB |
934 | finish_wait(sk->sk_sleep, &wait); |
935 | if (err) | |
936 | goto out_release; | |
1da177e4 LT |
937 | |
938 | newsk = skb->sk; | |
44ccff1f | 939 | sock_graft(newsk, newsock); |
1da177e4 LT |
940 | |
941 | /* Now attach up the new socket */ | |
942 | skb->sk = NULL; | |
943 | kfree_skb(skb); | |
944 | sk->sk_ack_backlog--; | |
1da177e4 | 945 | |
75606dc6 | 946 | out_release: |
1da177e4 LT |
947 | release_sock(sk); |
948 | ||
949 | return err; | |
950 | } | |
951 | ||
952 | static int rose_getname(struct socket *sock, struct sockaddr *uaddr, | |
953 | int *uaddr_len, int peer) | |
954 | { | |
955 | struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr; | |
956 | struct sock *sk = sock->sk; | |
957 | struct rose_sock *rose = rose_sk(sk); | |
958 | int n; | |
959 | ||
960 | if (peer != 0) { | |
961 | if (sk->sk_state != TCP_ESTABLISHED) | |
962 | return -ENOTCONN; | |
963 | srose->srose_family = AF_ROSE; | |
964 | srose->srose_addr = rose->dest_addr; | |
965 | srose->srose_call = rose->dest_call; | |
966 | srose->srose_ndigis = rose->dest_ndigis; | |
967 | for (n = 0; n < rose->dest_ndigis; n++) | |
968 | srose->srose_digis[n] = rose->dest_digis[n]; | |
969 | } else { | |
970 | srose->srose_family = AF_ROSE; | |
971 | srose->srose_addr = rose->source_addr; | |
972 | srose->srose_call = rose->source_call; | |
973 | srose->srose_ndigis = rose->source_ndigis; | |
974 | for (n = 0; n < rose->source_ndigis; n++) | |
975 | srose->srose_digis[n] = rose->source_digis[n]; | |
976 | } | |
977 | ||
978 | *uaddr_len = sizeof(struct full_sockaddr_rose); | |
979 | return 0; | |
980 | } | |
981 | ||
982 | int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci) | |
983 | { | |
984 | struct sock *sk; | |
985 | struct sock *make; | |
986 | struct rose_sock *make_rose; | |
987 | struct rose_facilities_struct facilities; | |
988 | int n, len; | |
989 | ||
990 | skb->sk = NULL; /* Initially we don't know who it's for */ | |
991 | ||
992 | /* | |
993 | * skb->data points to the rose frame start | |
994 | */ | |
995 | memset(&facilities, 0x00, sizeof(struct rose_facilities_struct)); | |
996 | ||
95b7d924 ED |
997 | len = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1; |
998 | len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1; | |
1da177e4 LT |
999 | if (!rose_parse_facilities(skb->data + len + 4, &facilities)) { |
1000 | rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76); | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | sk = rose_find_listener(&facilities.source_addr, &facilities.source_call); | |
1005 | ||
1006 | /* | |
1007 | * We can't accept the Call Request. | |
1008 | */ | |
1009 | if (sk == NULL || sk_acceptq_is_full(sk) || | |
1010 | (make = rose_make_new(sk)) == NULL) { | |
1011 | rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120); | |
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | skb->sk = make; | |
1016 | make->sk_state = TCP_ESTABLISHED; | |
1017 | make_rose = rose_sk(make); | |
1018 | ||
1019 | make_rose->lci = lci; | |
1020 | make_rose->dest_addr = facilities.dest_addr; | |
1021 | make_rose->dest_call = facilities.dest_call; | |
1022 | make_rose->dest_ndigis = facilities.dest_ndigis; | |
1023 | for (n = 0 ; n < facilities.dest_ndigis ; n++) | |
1024 | make_rose->dest_digis[n] = facilities.dest_digis[n]; | |
1025 | make_rose->source_addr = facilities.source_addr; | |
1026 | make_rose->source_call = facilities.source_call; | |
1027 | make_rose->source_ndigis = facilities.source_ndigis; | |
1028 | for (n = 0 ; n < facilities.source_ndigis ; n++) | |
1029 | make_rose->source_digis[n]= facilities.source_digis[n]; | |
1030 | make_rose->neighbour = neigh; | |
1031 | make_rose->device = dev; | |
1032 | make_rose->facilities = facilities; | |
1033 | ||
1034 | make_rose->neighbour->use++; | |
1035 | ||
1036 | if (rose_sk(sk)->defer) { | |
1037 | make_rose->state = ROSE_STATE_5; | |
1038 | } else { | |
1039 | rose_write_internal(make, ROSE_CALL_ACCEPTED); | |
1040 | make_rose->state = ROSE_STATE_3; | |
1041 | rose_start_idletimer(make); | |
1042 | } | |
1043 | ||
1044 | make_rose->condition = 0x00; | |
1045 | make_rose->vs = 0; | |
1046 | make_rose->va = 0; | |
1047 | make_rose->vr = 0; | |
1048 | make_rose->vl = 0; | |
1049 | sk->sk_ack_backlog++; | |
1050 | ||
1051 | rose_insert_socket(make); | |
1052 | ||
1053 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1054 | ||
1055 | rose_start_heartbeat(make); | |
1056 | ||
1057 | if (!sock_flag(sk, SOCK_DEAD)) | |
1058 | sk->sk_data_ready(sk, skb->len); | |
1059 | ||
1060 | return 1; | |
1061 | } | |
1062 | ||
1063 | static int rose_sendmsg(struct kiocb *iocb, struct socket *sock, | |
1064 | struct msghdr *msg, size_t len) | |
1065 | { | |
1066 | struct sock *sk = sock->sk; | |
1067 | struct rose_sock *rose = rose_sk(sk); | |
1068 | struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name; | |
1069 | int err; | |
1070 | struct full_sockaddr_rose srose; | |
1071 | struct sk_buff *skb; | |
1072 | unsigned char *asmptr; | |
1073 | int n, size, qbit = 0; | |
1074 | ||
244f46ae BP |
1075 | /* ROSE empty frame has no meaning : don't send */ |
1076 | if (len == 0) | |
1077 | return 0; | |
1078 | ||
1da177e4 LT |
1079 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) |
1080 | return -EINVAL; | |
1081 | ||
1082 | if (sock_flag(sk, SOCK_ZAPPED)) | |
1083 | return -EADDRNOTAVAIL; | |
1084 | ||
1085 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1086 | send_sig(SIGPIPE, current, 0); | |
1087 | return -EPIPE; | |
1088 | } | |
1089 | ||
1090 | if (rose->neighbour == NULL || rose->device == NULL) | |
1091 | return -ENETUNREACH; | |
1092 | ||
1093 | if (usrose != NULL) { | |
1094 | if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose)) | |
1095 | return -EINVAL; | |
1096 | memset(&srose, 0, sizeof(struct full_sockaddr_rose)); | |
1097 | memcpy(&srose, usrose, msg->msg_namelen); | |
1098 | if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 || | |
1099 | ax25cmp(&rose->dest_call, &srose.srose_call) != 0) | |
1100 | return -EISCONN; | |
1101 | if (srose.srose_ndigis != rose->dest_ndigis) | |
1102 | return -EISCONN; | |
1103 | if (srose.srose_ndigis == rose->dest_ndigis) { | |
1104 | for (n = 0 ; n < srose.srose_ndigis ; n++) | |
1105 | if (ax25cmp(&rose->dest_digis[n], | |
1106 | &srose.srose_digis[n])) | |
1107 | return -EISCONN; | |
1108 | } | |
1109 | if (srose.srose_family != AF_ROSE) | |
1110 | return -EINVAL; | |
1111 | } else { | |
1112 | if (sk->sk_state != TCP_ESTABLISHED) | |
1113 | return -ENOTCONN; | |
1114 | ||
1115 | srose.srose_family = AF_ROSE; | |
1116 | srose.srose_addr = rose->dest_addr; | |
1117 | srose.srose_call = rose->dest_call; | |
1118 | srose.srose_ndigis = rose->dest_ndigis; | |
1119 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1120 | srose.srose_digis[n] = rose->dest_digis[n]; | |
1121 | } | |
1122 | ||
1123 | SOCK_DEBUG(sk, "ROSE: sendto: Addresses built.\n"); | |
1124 | ||
1125 | /* Build a packet */ | |
1126 | SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n"); | |
1127 | size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; | |
1128 | ||
1129 | if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL) | |
1130 | return err; | |
1131 | ||
1132 | skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN); | |
1133 | ||
1134 | /* | |
1135 | * Put the data on the end | |
1136 | */ | |
1137 | SOCK_DEBUG(sk, "ROSE: Appending user data\n"); | |
1138 | ||
eeeb0374 ACM |
1139 | skb_reset_transport_header(skb); |
1140 | skb_put(skb, len); | |
1da177e4 | 1141 | |
eeeb0374 | 1142 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); |
1da177e4 LT |
1143 | if (err) { |
1144 | kfree_skb(skb); | |
1145 | return err; | |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * If the Q BIT Include socket option is in force, the first | |
1150 | * byte of the user data is the logical value of the Q Bit. | |
1151 | */ | |
1152 | if (rose->qbitincl) { | |
1153 | qbit = skb->data[0]; | |
1154 | skb_pull(skb, 1); | |
1155 | } | |
1156 | ||
1157 | /* | |
1158 | * Push down the ROSE header | |
1159 | */ | |
1160 | asmptr = skb_push(skb, ROSE_MIN_LEN); | |
1161 | ||
1162 | SOCK_DEBUG(sk, "ROSE: Building Network Header.\n"); | |
1163 | ||
1164 | /* Build a ROSE Network header */ | |
1165 | asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI; | |
1166 | asmptr[1] = (rose->lci >> 0) & 0xFF; | |
1167 | asmptr[2] = ROSE_DATA; | |
1168 | ||
1169 | if (qbit) | |
1170 | asmptr[0] |= ROSE_Q_BIT; | |
1171 | ||
1172 | SOCK_DEBUG(sk, "ROSE: Built header.\n"); | |
1173 | ||
1174 | SOCK_DEBUG(sk, "ROSE: Transmitting buffer\n"); | |
1175 | ||
1176 | if (sk->sk_state != TCP_ESTABLISHED) { | |
1177 | kfree_skb(skb); | |
1178 | return -ENOTCONN; | |
1179 | } | |
1180 | ||
1181 | #ifdef M_BIT | |
1182 | #define ROSE_PACLEN (256-ROSE_MIN_LEN) | |
1183 | if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) { | |
1184 | unsigned char header[ROSE_MIN_LEN]; | |
1185 | struct sk_buff *skbn; | |
1186 | int frontlen; | |
1187 | int lg; | |
1188 | ||
1189 | /* Save a copy of the Header */ | |
d626f62b | 1190 | skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN); |
1da177e4 LT |
1191 | skb_pull(skb, ROSE_MIN_LEN); |
1192 | ||
1193 | frontlen = skb_headroom(skb); | |
1194 | ||
1195 | while (skb->len > 0) { | |
1196 | if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) { | |
1197 | kfree_skb(skb); | |
1198 | return err; | |
1199 | } | |
1200 | ||
1201 | skbn->sk = sk; | |
1202 | skbn->free = 1; | |
1203 | skbn->arp = 1; | |
1204 | ||
1205 | skb_reserve(skbn, frontlen); | |
1206 | ||
1207 | lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN; | |
1208 | ||
1209 | /* Copy the user data */ | |
d626f62b | 1210 | skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg); |
1da177e4 LT |
1211 | skb_pull(skb, lg); |
1212 | ||
1213 | /* Duplicate the Header */ | |
1214 | skb_push(skbn, ROSE_MIN_LEN); | |
27d7ff46 | 1215 | skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN); |
1da177e4 LT |
1216 | |
1217 | if (skb->len > 0) | |
1218 | skbn->data[2] |= M_BIT; | |
1219 | ||
1220 | skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */ | |
1221 | } | |
1222 | ||
1223 | skb->free = 1; | |
1224 | kfree_skb(skb); | |
1225 | } else { | |
1226 | skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */ | |
1227 | } | |
1228 | #else | |
1229 | skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */ | |
1230 | #endif | |
1231 | ||
1232 | rose_kick(sk); | |
1233 | ||
1234 | return len; | |
1235 | } | |
1236 | ||
1237 | ||
1238 | static int rose_recvmsg(struct kiocb *iocb, struct socket *sock, | |
1239 | struct msghdr *msg, size_t size, int flags) | |
1240 | { | |
1241 | struct sock *sk = sock->sk; | |
1242 | struct rose_sock *rose = rose_sk(sk); | |
1243 | struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name; | |
1244 | size_t copied; | |
1245 | unsigned char *asmptr; | |
1246 | struct sk_buff *skb; | |
1247 | int n, er, qbit; | |
1248 | ||
1249 | /* | |
1250 | * This works for seqpacket too. The receiver has ordered the queue for | |
1251 | * us! We do one quick check first though | |
1252 | */ | |
1253 | if (sk->sk_state != TCP_ESTABLISHED) | |
1254 | return -ENOTCONN; | |
1255 | ||
1256 | /* Now we can treat all alike */ | |
1257 | if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL) | |
1258 | return er; | |
1259 | ||
1260 | qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT; | |
1261 | ||
1262 | skb_pull(skb, ROSE_MIN_LEN); | |
1263 | ||
1264 | if (rose->qbitincl) { | |
1265 | asmptr = skb_push(skb, 1); | |
1266 | *asmptr = qbit; | |
1267 | } | |
1268 | ||
badff6d0 | 1269 | skb_reset_transport_header(skb); |
1da177e4 LT |
1270 | copied = skb->len; |
1271 | ||
244f46ae BP |
1272 | /* ROSE empty frame has no meaning : ignore it */ |
1273 | if (copied == 0) { | |
1274 | skb_free_datagram(sk, skb); | |
1275 | return copied; | |
1276 | } | |
1277 | ||
1da177e4 LT |
1278 | if (copied > size) { |
1279 | copied = size; | |
1280 | msg->msg_flags |= MSG_TRUNC; | |
1281 | } | |
1282 | ||
1283 | skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
1284 | ||
1285 | if (srose != NULL) { | |
1286 | srose->srose_family = AF_ROSE; | |
1287 | srose->srose_addr = rose->dest_addr; | |
1288 | srose->srose_call = rose->dest_call; | |
1289 | srose->srose_ndigis = rose->dest_ndigis; | |
1290 | if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) { | |
1291 | struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name; | |
1292 | for (n = 0 ; n < rose->dest_ndigis ; n++) | |
1293 | full_srose->srose_digis[n] = rose->dest_digis[n]; | |
1294 | msg->msg_namelen = sizeof(struct full_sockaddr_rose); | |
1295 | } else { | |
1296 | if (rose->dest_ndigis >= 1) { | |
1297 | srose->srose_ndigis = 1; | |
1298 | srose->srose_digi = rose->dest_digis[0]; | |
1299 | } | |
1300 | msg->msg_namelen = sizeof(struct sockaddr_rose); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | skb_free_datagram(sk, skb); | |
1305 | ||
1306 | return copied; | |
1307 | } | |
1308 | ||
1309 | ||
1310 | static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1311 | { | |
1312 | struct sock *sk = sock->sk; | |
1313 | struct rose_sock *rose = rose_sk(sk); | |
1314 | void __user *argp = (void __user *)arg; | |
1315 | ||
1316 | switch (cmd) { | |
1317 | case TIOCOUTQ: { | |
1318 | long amount; | |
1319 | amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc); | |
1320 | if (amount < 0) | |
1321 | amount = 0; | |
20b7d10a | 1322 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | case TIOCINQ: { | |
1326 | struct sk_buff *skb; | |
1327 | long amount = 0L; | |
1328 | /* These two are safe on a single CPU system as only user tasks fiddle here */ | |
1329 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) | |
1330 | amount = skb->len; | |
20b7d10a | 1331 | return put_user(amount, (unsigned int __user *) argp); |
1da177e4 LT |
1332 | } |
1333 | ||
1334 | case SIOCGSTAMP: | |
20b7d10a | 1335 | return sock_get_timestamp(sk, (struct timeval __user *) argp); |
1da177e4 | 1336 | |
ae40eb1e ED |
1337 | case SIOCGSTAMPNS: |
1338 | return sock_get_timestampns(sk, (struct timespec __user *) argp); | |
1339 | ||
1da177e4 LT |
1340 | case SIOCGIFADDR: |
1341 | case SIOCSIFADDR: | |
1342 | case SIOCGIFDSTADDR: | |
1343 | case SIOCSIFDSTADDR: | |
1344 | case SIOCGIFBRDADDR: | |
1345 | case SIOCSIFBRDADDR: | |
1346 | case SIOCGIFNETMASK: | |
1347 | case SIOCSIFNETMASK: | |
1348 | case SIOCGIFMETRIC: | |
1349 | case SIOCSIFMETRIC: | |
1350 | return -EINVAL; | |
1351 | ||
1352 | case SIOCADDRT: | |
1353 | case SIOCDELRT: | |
1354 | case SIOCRSCLRRT: | |
1355 | if (!capable(CAP_NET_ADMIN)) | |
1356 | return -EPERM; | |
1357 | return rose_rt_ioctl(cmd, argp); | |
1358 | ||
1359 | case SIOCRSGCAUSE: { | |
1360 | struct rose_cause_struct rose_cause; | |
1361 | rose_cause.cause = rose->cause; | |
1362 | rose_cause.diagnostic = rose->diagnostic; | |
1363 | return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0; | |
1364 | } | |
1365 | ||
1366 | case SIOCRSSCAUSE: { | |
1367 | struct rose_cause_struct rose_cause; | |
1368 | if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct))) | |
1369 | return -EFAULT; | |
1370 | rose->cause = rose_cause.cause; | |
1371 | rose->diagnostic = rose_cause.diagnostic; | |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | case SIOCRSSL2CALL: | |
1376 | if (!capable(CAP_NET_ADMIN)) return -EPERM; | |
1377 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1378 | ax25_listen_release(&rose_callsign, NULL); | |
1379 | if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address))) | |
1380 | return -EFAULT; | |
1381 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
81dcd169 RB |
1382 | return ax25_listen_register(&rose_callsign, NULL); |
1383 | ||
1da177e4 LT |
1384 | return 0; |
1385 | ||
1386 | case SIOCRSGL2CALL: | |
1387 | return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0; | |
1388 | ||
1389 | case SIOCRSACCEPT: | |
1390 | if (rose->state == ROSE_STATE_5) { | |
1391 | rose_write_internal(sk, ROSE_CALL_ACCEPTED); | |
1392 | rose_start_idletimer(sk); | |
1393 | rose->condition = 0x00; | |
1394 | rose->vs = 0; | |
1395 | rose->va = 0; | |
1396 | rose->vr = 0; | |
1397 | rose->vl = 0; | |
1398 | rose->state = ROSE_STATE_3; | |
1399 | } | |
1400 | return 0; | |
1401 | ||
1402 | default: | |
b5e5fa5e | 1403 | return -ENOIOCTLCMD; |
1da177e4 LT |
1404 | } |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | #ifdef CONFIG_PROC_FS | |
1410 | static void *rose_info_start(struct seq_file *seq, loff_t *pos) | |
95b7d924 | 1411 | __acquires(rose_list_lock) |
1da177e4 LT |
1412 | { |
1413 | int i; | |
1414 | struct sock *s; | |
1415 | struct hlist_node *node; | |
1416 | ||
1417 | spin_lock_bh(&rose_list_lock); | |
1418 | if (*pos == 0) | |
1419 | return SEQ_START_TOKEN; | |
3dcf7c5e | 1420 | |
1da177e4 LT |
1421 | i = 1; |
1422 | sk_for_each(s, node, &rose_list) { | |
1423 | if (i == *pos) | |
1424 | return s; | |
1425 | ++i; | |
1426 | } | |
1427 | return NULL; | |
1428 | } | |
1429 | ||
1430 | static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos) | |
1431 | { | |
1432 | ++*pos; | |
1433 | ||
3dcf7c5e | 1434 | return (v == SEQ_START_TOKEN) ? sk_head(&rose_list) |
1da177e4 LT |
1435 | : sk_next((struct sock *)v); |
1436 | } | |
3dcf7c5e | 1437 | |
1da177e4 | 1438 | static void rose_info_stop(struct seq_file *seq, void *v) |
95b7d924 | 1439 | __releases(rose_list_lock) |
1da177e4 LT |
1440 | { |
1441 | spin_unlock_bh(&rose_list_lock); | |
1442 | } | |
1443 | ||
1444 | static int rose_info_show(struct seq_file *seq, void *v) | |
1445 | { | |
f75268cd RB |
1446 | char buf[11]; |
1447 | ||
1da177e4 | 1448 | if (v == SEQ_START_TOKEN) |
3dcf7c5e | 1449 | seq_puts(seq, |
1da177e4 LT |
1450 | "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"); |
1451 | ||
1452 | else { | |
1453 | struct sock *s = v; | |
1454 | struct rose_sock *rose = rose_sk(s); | |
1455 | const char *devname, *callsign; | |
1456 | const struct net_device *dev = rose->device; | |
1457 | ||
1458 | if (!dev) | |
1459 | devname = "???"; | |
1460 | else | |
1461 | devname = dev->name; | |
3dcf7c5e | 1462 | |
1da177e4 LT |
1463 | seq_printf(seq, "%-10s %-9s ", |
1464 | rose2asc(&rose->dest_addr), | |
f75268cd | 1465 | ax2asc(buf, &rose->dest_call)); |
1da177e4 LT |
1466 | |
1467 | if (ax25cmp(&rose->source_call, &null_ax25_address) == 0) | |
1468 | callsign = "??????-?"; | |
1469 | else | |
f75268cd | 1470 | callsign = ax2asc(buf, &rose->source_call); |
1da177e4 LT |
1471 | |
1472 | seq_printf(seq, | |
1473 | "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n", | |
1474 | rose2asc(&rose->source_addr), | |
1475 | callsign, | |
1476 | devname, | |
1477 | rose->lci & 0x0FFF, | |
1478 | (rose->neighbour) ? rose->neighbour->number : 0, | |
1479 | rose->state, | |
1480 | rose->vs, | |
1481 | rose->vr, | |
1482 | rose->va, | |
1483 | ax25_display_timer(&rose->timer) / HZ, | |
1484 | rose->t1 / HZ, | |
1485 | rose->t2 / HZ, | |
1486 | rose->t3 / HZ, | |
1487 | rose->hb / HZ, | |
1488 | ax25_display_timer(&rose->idletimer) / (60 * HZ), | |
1489 | rose->idle / (60 * HZ), | |
1490 | atomic_read(&s->sk_wmem_alloc), | |
1491 | atomic_read(&s->sk_rmem_alloc), | |
1492 | s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); | |
1493 | } | |
1494 | ||
1495 | return 0; | |
1496 | } | |
1497 | ||
56b3d975 | 1498 | static const struct seq_operations rose_info_seqops = { |
1da177e4 LT |
1499 | .start = rose_info_start, |
1500 | .next = rose_info_next, | |
1501 | .stop = rose_info_stop, | |
1502 | .show = rose_info_show, | |
1503 | }; | |
1504 | ||
1505 | static int rose_info_open(struct inode *inode, struct file *file) | |
1506 | { | |
1507 | return seq_open(file, &rose_info_seqops); | |
1508 | } | |
1509 | ||
da7071d7 | 1510 | static const struct file_operations rose_info_fops = { |
1da177e4 LT |
1511 | .owner = THIS_MODULE, |
1512 | .open = rose_info_open, | |
1513 | .read = seq_read, | |
1514 | .llseek = seq_lseek, | |
1515 | .release = seq_release, | |
1516 | }; | |
1517 | #endif /* CONFIG_PROC_FS */ | |
1518 | ||
1519 | static struct net_proto_family rose_family_ops = { | |
1520 | .family = PF_ROSE, | |
1521 | .create = rose_create, | |
1522 | .owner = THIS_MODULE, | |
1523 | }; | |
1524 | ||
1525 | static struct proto_ops rose_proto_ops = { | |
1526 | .family = PF_ROSE, | |
1527 | .owner = THIS_MODULE, | |
1528 | .release = rose_release, | |
1529 | .bind = rose_bind, | |
1530 | .connect = rose_connect, | |
1531 | .socketpair = sock_no_socketpair, | |
1532 | .accept = rose_accept, | |
1533 | .getname = rose_getname, | |
1534 | .poll = datagram_poll, | |
1535 | .ioctl = rose_ioctl, | |
1536 | .listen = rose_listen, | |
1537 | .shutdown = sock_no_shutdown, | |
1538 | .setsockopt = rose_setsockopt, | |
1539 | .getsockopt = rose_getsockopt, | |
1540 | .sendmsg = rose_sendmsg, | |
1541 | .recvmsg = rose_recvmsg, | |
1542 | .mmap = sock_no_mmap, | |
1543 | .sendpage = sock_no_sendpage, | |
1544 | }; | |
1545 | ||
1546 | static struct notifier_block rose_dev_notifier = { | |
1547 | .notifier_call = rose_device_event, | |
1548 | }; | |
1549 | ||
1550 | static struct net_device **dev_rose; | |
1551 | ||
8d5cf596 RB |
1552 | static struct ax25_protocol rose_pid = { |
1553 | .pid = AX25_P_ROSE, | |
1554 | .func = rose_route_frame | |
1555 | }; | |
1556 | ||
a4282717 RB |
1557 | static struct ax25_linkfail rose_linkfail_notifier = { |
1558 | .func = rose_link_failed | |
1559 | }; | |
1560 | ||
1da177e4 LT |
1561 | static int __init rose_proto_init(void) |
1562 | { | |
1563 | int i; | |
a83cd2cc | 1564 | int rc; |
1da177e4 | 1565 | |
a83cd2cc AD |
1566 | if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) { |
1567 | printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n"); | |
1568 | rc = -EINVAL; | |
1569 | goto out; | |
1570 | } | |
1571 | ||
1572 | rc = proto_register(&rose_proto, 0); | |
1da177e4 LT |
1573 | if (rc != 0) |
1574 | goto out; | |
1575 | ||
1576 | rose_callsign = null_ax25_address; | |
1577 | ||
1b30dd35 | 1578 | dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); |
1da177e4 LT |
1579 | if (dev_rose == NULL) { |
1580 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); | |
a83cd2cc AD |
1581 | rc = -ENOMEM; |
1582 | goto out_proto_unregister; | |
1da177e4 LT |
1583 | } |
1584 | ||
1da177e4 LT |
1585 | for (i = 0; i < rose_ndevs; i++) { |
1586 | struct net_device *dev; | |
1587 | char name[IFNAMSIZ]; | |
1588 | ||
1589 | sprintf(name, "rose%d", i); | |
d289d120 | 1590 | dev = alloc_netdev(0, name, rose_setup); |
1da177e4 LT |
1591 | if (!dev) { |
1592 | printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n"); | |
70ff3b66 | 1593 | rc = -ENOMEM; |
1da177e4 LT |
1594 | goto fail; |
1595 | } | |
70ff3b66 AD |
1596 | rc = register_netdev(dev); |
1597 | if (rc) { | |
520d1b83 | 1598 | printk(KERN_ERR "ROSE: netdevice registration failed\n"); |
1da177e4 LT |
1599 | free_netdev(dev); |
1600 | goto fail; | |
1601 | } | |
c773e847 | 1602 | rose_set_lockdep_key(dev); |
1da177e4 LT |
1603 | dev_rose[i] = dev; |
1604 | } | |
1605 | ||
1606 | sock_register(&rose_family_ops); | |
1607 | register_netdevice_notifier(&rose_dev_notifier); | |
1da177e4 | 1608 | |
8d5cf596 | 1609 | ax25_register_pid(&rose_pid); |
a4282717 | 1610 | ax25_linkfail_register(&rose_linkfail_notifier); |
1da177e4 LT |
1611 | |
1612 | #ifdef CONFIG_SYSCTL | |
1613 | rose_register_sysctl(); | |
1614 | #endif | |
1615 | rose_loopback_init(); | |
1616 | ||
1617 | rose_add_loopback_neigh(); | |
1618 | ||
457c4cbc EB |
1619 | proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops); |
1620 | proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops); | |
1621 | proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops); | |
1622 | proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops); | |
1da177e4 LT |
1623 | out: |
1624 | return rc; | |
1625 | fail: | |
1626 | while (--i >= 0) { | |
1627 | unregister_netdev(dev_rose[i]); | |
1628 | free_netdev(dev_rose[i]); | |
1629 | } | |
1630 | kfree(dev_rose); | |
a83cd2cc | 1631 | out_proto_unregister: |
1da177e4 | 1632 | proto_unregister(&rose_proto); |
70ff3b66 | 1633 | goto out; |
1da177e4 LT |
1634 | } |
1635 | module_init(rose_proto_init); | |
1636 | ||
1637 | module_param(rose_ndevs, int, 0); | |
1638 | MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices"); | |
1639 | ||
1640 | MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>"); | |
1641 | MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol"); | |
1642 | MODULE_LICENSE("GPL"); | |
1643 | MODULE_ALIAS_NETPROTO(PF_ROSE); | |
1644 | ||
1645 | static void __exit rose_exit(void) | |
1646 | { | |
1647 | int i; | |
1648 | ||
457c4cbc EB |
1649 | proc_net_remove(&init_net, "rose"); |
1650 | proc_net_remove(&init_net, "rose_neigh"); | |
1651 | proc_net_remove(&init_net, "rose_nodes"); | |
1652 | proc_net_remove(&init_net, "rose_routes"); | |
1da177e4 LT |
1653 | rose_loopback_clear(); |
1654 | ||
1655 | rose_rt_free(); | |
1656 | ||
1657 | ax25_protocol_release(AX25_P_ROSE); | |
a4282717 | 1658 | ax25_linkfail_release(&rose_linkfail_notifier); |
1da177e4 LT |
1659 | |
1660 | if (ax25cmp(&rose_callsign, &null_ax25_address) != 0) | |
1661 | ax25_listen_release(&rose_callsign, NULL); | |
1662 | ||
1663 | #ifdef CONFIG_SYSCTL | |
1664 | rose_unregister_sysctl(); | |
1665 | #endif | |
1666 | unregister_netdevice_notifier(&rose_dev_notifier); | |
1667 | ||
1668 | sock_unregister(PF_ROSE); | |
1669 | ||
1670 | for (i = 0; i < rose_ndevs; i++) { | |
1671 | struct net_device *dev = dev_rose[i]; | |
1672 | ||
1673 | if (dev) { | |
1674 | unregister_netdev(dev); | |
1675 | free_netdev(dev); | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | kfree(dev_rose); | |
1680 | proto_unregister(&rose_proto); | |
1681 | } | |
1682 | ||
1683 | module_exit(rose_exit); |