blob: e98fcfbe6007919d6c114708cde848a649bb2e4e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 */
Randy Dunlap4fc268d2006-01-11 12:17:47 -080012
Randy Dunlap4fc268d2006-01-11 12:17:47 -080013#include <linux/capability.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090021#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/kernel.h>
23#include <linux/sched.h>
24#include <linux/spinlock.h>
25#include <linux/timer.h>
26#include <linux/string.h>
27#include <linux/sockios.h>
28#include <linux/net.h>
29#include <linux/stat.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020030#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <net/ax25.h>
32#include <linux/inet.h>
33#include <linux/netdevice.h>
34#include <linux/if_arp.h>
35#include <linux/skbuff.h>
36#include <net/sock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#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>
Arnaldo Carvalho de Meloc752f072005-08-09 20:08:28 -070046#include <net/tcp_states.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <net/ip.h>
48#include <net/arp.h>
49
50static int rose_ndevs = 10;
51
52int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
53int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
54int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
55int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
56int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
57int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
58int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
59int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
60int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
61int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
62
63static HLIST_HEAD(rose_list);
64static DEFINE_SPINLOCK(rose_list_lock);
65
Alexey Dobriyan5708e862009-09-14 12:23:23 +000066static const struct proto_ops rose_proto_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
68ax25_address rose_callsign;
69
70/*
Ralf Baechleb1d21ca2006-07-12 13:25:56 -070071 * 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 */
76static struct lock_class_key rose_netdev_xmit_lock_key;
David S. Millercf508b12008-07-22 14:16:42 -070077static struct lock_class_key rose_netdev_addr_lock_key;
Ralf Baechleb1d21ca2006-07-12 13:25:56 -070078
David S. Millere8a04642008-07-17 00:34:19 -070079static void rose_set_lockdep_one(struct net_device *dev,
80 struct netdev_queue *txq,
81 void *_unused)
David S. Millerc773e842008-07-08 23:13:53 -070082{
83 lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
84}
85
86static void rose_set_lockdep_key(struct net_device *dev)
87{
David S. Millercf508b12008-07-22 14:16:42 -070088 lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
David S. Millere8a04642008-07-17 00:34:19 -070089 netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
David S. Millerc773e842008-07-08 23:13:53 -070090}
91
Ralf Baechleb1d21ca2006-07-12 13:25:56 -070092/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 * Convert a ROSE address into text.
94 */
Ralf Baechledcf777f2009-07-26 19:11:14 -070095char *rose2asc(char *buf, const rose_address *addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096{
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 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) {
Ralf Baechledcf777f2009-07-26 19:11:14 -0700100 strcpy(buf, "*");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 } else {
Ralf Baechledcf777f2009-07-26 19:11:14 -0700102 sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 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
Ralf Baechledcf777f2009-07-26 19:11:14 -0700109 return buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110}
111
112/*
113 * Compare two ROSE addresses, 0 == equal.
114 */
115int 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 */
129int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
130{
Eric Dumazet95b7d922008-01-15 03:30:35 -0800131 unsigned int i, j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
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 */
154static 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 */
165void rose_kill_by_neigh(struct rose_neigh *neigh)
166{
167 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
169 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800170 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 struct rose_sock *rose = rose_sk(s);
172
173 if (rose->neighbour == neigh) {
174 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
175 rose->neighbour->use--;
176 rose->neighbour = NULL;
177 }
178 }
179 spin_unlock_bh(&rose_list_lock);
180}
181
182/*
183 * Kill all bound sockets on a dropped device.
184 */
185static void rose_kill_by_device(struct net_device *dev)
186{
187 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
189 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800190 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 struct rose_sock *rose = rose_sk(s);
192
193 if (rose->device == dev) {
194 rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
195 rose->neighbour->use--;
196 rose->device = NULL;
197 }
198 }
199 spin_unlock_bh(&rose_list_lock);
200}
201
202/*
203 * Handle device status changes.
204 */
Jiri Pirko351638e2013-05-28 01:30:21 +0000205static int rose_device_event(struct notifier_block *this,
206 unsigned long event, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207{
Jiri Pirko351638e2013-05-28 01:30:21 +0000208 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
YOSHIFUJI Hideaki721499e2008-07-19 22:34:43 -0700210 if (!net_eq(dev_net(dev), &init_net))
Eric W. Biedermane9dc8652007-09-12 13:02:17 +0200211 return NOTIFY_DONE;
212
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 if (event != NETDEV_DOWN)
214 return NOTIFY_DONE;
215
216 switch (dev->type) {
217 case ARPHRD_ROSE:
218 rose_kill_by_device(dev);
219 break;
220 case ARPHRD_AX25:
221 rose_link_device_down(dev);
222 rose_rt_device_down(dev);
223 break;
224 }
225
226 return NOTIFY_DONE;
227}
228
229/*
230 * Add a socket to the bound sockets list.
231 */
232static void rose_insert_socket(struct sock *sk)
233{
234
235 spin_lock_bh(&rose_list_lock);
236 sk_add_node(sk, &rose_list);
237 spin_unlock_bh(&rose_list_lock);
238}
239
240/*
241 * Find a socket that wants to accept the Call Request we just
242 * received.
243 */
244static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
245{
246 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800249 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 struct rose_sock *rose = rose_sk(s);
251
252 if (!rosecmp(&rose->source_addr, addr) &&
253 !ax25cmp(&rose->source_call, call) &&
254 !rose->source_ndigis && s->sk_state == TCP_LISTEN)
255 goto found;
256 }
257
Sasha Levinb67bfe02013-02-27 17:06:00 -0800258 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 struct rose_sock *rose = rose_sk(s);
260
261 if (!rosecmp(&rose->source_addr, addr) &&
262 !ax25cmp(&rose->source_call, &null_ax25_address) &&
263 s->sk_state == TCP_LISTEN)
264 goto found;
265 }
266 s = NULL;
267found:
268 spin_unlock_bh(&rose_list_lock);
269 return s;
270}
271
272/*
273 * Find a connected ROSE socket given my LCI and device.
274 */
275struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
276{
277 struct sock *s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279 spin_lock_bh(&rose_list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800280 sk_for_each(s, &rose_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 struct rose_sock *rose = rose_sk(s);
282
283 if (rose->lci == lci && rose->neighbour == neigh)
284 goto found;
285 }
286 s = NULL;
287found:
288 spin_unlock_bh(&rose_list_lock);
289 return s;
290}
291
292/*
293 * Find a unique LCI for a given device.
294 */
295unsigned int rose_new_lci(struct rose_neigh *neigh)
296{
297 int lci;
298
299 if (neigh->dce_mode) {
300 for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
301 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
302 return lci;
303 } else {
304 for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
305 if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
306 return lci;
307 }
308
309 return 0;
310}
311
312/*
313 * Deferred destroy.
314 */
315void rose_destroy_socket(struct sock *);
316
317/*
318 * Handler for deferred kills.
319 */
320static void rose_destroy_timer(unsigned long data)
321{
322 rose_destroy_socket((struct sock *)data);
323}
324
325/*
326 * This is called from user mode and the timers. Thus it protects itself
327 * against interrupt users but doesn't worry about being called during
328 * work. Once it is removed from the queue no interrupt or bottom half
329 * will touch it and we are (fairly 8-) ) safe.
330 */
331void rose_destroy_socket(struct sock *sk)
332{
333 struct sk_buff *skb;
334
335 rose_remove_socket(sk);
336 rose_stop_heartbeat(sk);
337 rose_stop_idletimer(sk);
338 rose_stop_timer(sk);
339
340 rose_clear_queues(sk); /* Flush the queues */
341
342 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
343 if (skb->sk != sk) { /* A pending connection */
344 /* Queue the unaccepted socket for death */
345 sock_set_flag(skb->sk, SOCK_DEAD);
346 rose_start_heartbeat(skb->sk);
347 rose_sk(skb->sk)->state = ROSE_STATE_0;
348 }
349
350 kfree_skb(skb);
351 }
352
Eric Dumazetc5640392009-06-16 10:12:03 +0000353 if (sk_has_allocations(sk)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 /* Defer: outstanding buffers */
Pavel Emelyanovb24b8a22008-01-23 21:20:07 -0800355 setup_timer(&sk->sk_timer, rose_destroy_timer,
356 (unsigned long)sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 sk->sk_timer.expires = jiffies + 10 * HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 add_timer(&sk->sk_timer);
359 } else
360 sock_put(sk);
361}
362
363/*
364 * Handling for system calls applied via the various interfaces to a
365 * ROSE socket object.
366 */
367
368static int rose_setsockopt(struct socket *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700369 char __user *optval, unsigned int optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370{
371 struct sock *sk = sock->sk;
372 struct rose_sock *rose = rose_sk(sk);
373 int opt;
374
375 if (level != SOL_ROSE)
376 return -ENOPROTOOPT;
377
378 if (optlen < sizeof(int))
379 return -EINVAL;
380
381 if (get_user(opt, (int __user *)optval))
382 return -EFAULT;
383
384 switch (optname) {
385 case ROSE_DEFER:
386 rose->defer = opt ? 1 : 0;
387 return 0;
388
389 case ROSE_T1:
390 if (opt < 1)
391 return -EINVAL;
392 rose->t1 = opt * HZ;
393 return 0;
394
395 case ROSE_T2:
396 if (opt < 1)
397 return -EINVAL;
398 rose->t2 = opt * HZ;
399 return 0;
400
401 case ROSE_T3:
402 if (opt < 1)
403 return -EINVAL;
404 rose->t3 = opt * HZ;
405 return 0;
406
407 case ROSE_HOLDBACK:
408 if (opt < 1)
409 return -EINVAL;
410 rose->hb = opt * HZ;
411 return 0;
412
413 case ROSE_IDLE:
414 if (opt < 0)
415 return -EINVAL;
416 rose->idle = opt * 60 * HZ;
417 return 0;
418
419 case ROSE_QBITINCL:
420 rose->qbitincl = opt ? 1 : 0;
421 return 0;
422
423 default:
424 return -ENOPROTOOPT;
425 }
426}
427
428static int rose_getsockopt(struct socket *sock, int level, int optname,
429 char __user *optval, int __user *optlen)
430{
431 struct sock *sk = sock->sk;
432 struct rose_sock *rose = rose_sk(sk);
433 int val = 0;
434 int len;
435
436 if (level != SOL_ROSE)
437 return -ENOPROTOOPT;
438
439 if (get_user(len, optlen))
440 return -EFAULT;
441
442 if (len < 0)
443 return -EINVAL;
444
445 switch (optname) {
446 case ROSE_DEFER:
447 val = rose->defer;
448 break;
449
450 case ROSE_T1:
451 val = rose->t1 / HZ;
452 break;
453
454 case ROSE_T2:
455 val = rose->t2 / HZ;
456 break;
457
458 case ROSE_T3:
459 val = rose->t3 / HZ;
460 break;
461
462 case ROSE_HOLDBACK:
463 val = rose->hb / HZ;
464 break;
465
466 case ROSE_IDLE:
467 val = rose->idle / (60 * HZ);
468 break;
469
470 case ROSE_QBITINCL:
471 val = rose->qbitincl;
472 break;
473
474 default:
475 return -ENOPROTOOPT;
476 }
477
478 len = min_t(unsigned int, len, sizeof(int));
479
480 if (put_user(len, optlen))
481 return -EFAULT;
482
483 return copy_to_user(optval, &val, len) ? -EFAULT : 0;
484}
485
486static int rose_listen(struct socket *sock, int backlog)
487{
488 struct sock *sk = sock->sk;
489
490 if (sk->sk_state != TCP_LISTEN) {
491 struct rose_sock *rose = rose_sk(sk);
492
493 rose->dest_ndigis = 0;
494 memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
495 memset(&rose->dest_call, 0, AX25_ADDR_LEN);
496 memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
497 sk->sk_max_ack_backlog = backlog;
498 sk->sk_state = TCP_LISTEN;
499 return 0;
500 }
501
502 return -EOPNOTSUPP;
503}
504
505static struct proto rose_proto = {
506 .name = "ROSE",
507 .owner = THIS_MODULE,
508 .obj_size = sizeof(struct rose_sock),
509};
510
Eric Paris3f378b62009-11-05 22:18:14 -0800511static int rose_create(struct net *net, struct socket *sock, int protocol,
512 int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513{
514 struct sock *sk;
515 struct rose_sock *rose;
516
Octavian Purdila09ad9bc2009-11-25 15:14:13 -0800517 if (!net_eq(net, &init_net))
Eric W. Biederman1b8d7ae2007-10-08 23:24:22 -0700518 return -EAFNOSUPPORT;
519
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 if (sock->type != SOCK_SEQPACKET || protocol != 0)
521 return -ESOCKTNOSUPPORT;
522
Pavel Emelyanov6257ff22007-11-01 00:39:31 -0700523 sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
524 if (sk == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 return -ENOMEM;
526
527 rose = rose_sk(sk);
528
529 sock_init_data(sock, sk);
530
531 skb_queue_head_init(&rose->ack_queue);
532#ifdef M_BIT
533 skb_queue_head_init(&rose->frag_queue);
534 rose->fraglen = 0;
535#endif
536
537 sock->ops = &rose_proto_ops;
538 sk->sk_protocol = protocol;
539
540 init_timer(&rose->timer);
541 init_timer(&rose->idletimer);
542
Ralf Baechle82e84242006-05-03 23:28:20 -0700543 rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
544 rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
545 rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
546 rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
547 rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
549 rose->state = ROSE_STATE_0;
550
551 return 0;
552}
553
554static struct sock *rose_make_new(struct sock *osk)
555{
556 struct sock *sk;
557 struct rose_sock *rose, *orose;
558
559 if (osk->sk_type != SOCK_SEQPACKET)
560 return NULL;
561
YOSHIFUJI Hideaki3b1e0a62008-03-26 02:26:21 +0900562 sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
Pavel Emelyanov6257ff22007-11-01 00:39:31 -0700563 if (sk == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 return NULL;
565
566 rose = rose_sk(sk);
567
568 sock_init_data(NULL, sk);
569
570 skb_queue_head_init(&rose->ack_queue);
571#ifdef M_BIT
572 skb_queue_head_init(&rose->frag_queue);
573 rose->fraglen = 0;
574#endif
575
576 sk->sk_type = osk->sk_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 sk->sk_priority = osk->sk_priority;
578 sk->sk_protocol = osk->sk_protocol;
579 sk->sk_rcvbuf = osk->sk_rcvbuf;
580 sk->sk_sndbuf = osk->sk_sndbuf;
581 sk->sk_state = TCP_ESTABLISHED;
Ralf Baechle53b924b2005-08-23 10:11:30 -0700582 sock_copy_flags(sk, osk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
584 init_timer(&rose->timer);
585 init_timer(&rose->idletimer);
586
587 orose = rose_sk(osk);
588 rose->t1 = orose->t1;
589 rose->t2 = orose->t2;
590 rose->t3 = orose->t3;
591 rose->hb = orose->hb;
592 rose->idle = orose->idle;
593 rose->defer = orose->defer;
594 rose->device = orose->device;
595 rose->qbitincl = orose->qbitincl;
596
597 return sk;
598}
599
600static int rose_release(struct socket *sock)
601{
602 struct sock *sk = sock->sk;
603 struct rose_sock *rose;
604
605 if (sk == NULL) return 0;
606
Jarek Poplawski49652912008-04-01 23:56:17 -0700607 sock_hold(sk);
608 sock_orphan(sk);
609 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 rose = rose_sk(sk);
611
612 switch (rose->state) {
613 case ROSE_STATE_0:
Jarek Poplawski49652912008-04-01 23:56:17 -0700614 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 rose_disconnect(sk, 0, -1, -1);
Jarek Poplawski49652912008-04-01 23:56:17 -0700616 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 rose_destroy_socket(sk);
618 break;
619
620 case ROSE_STATE_2:
621 rose->neighbour->use--;
Jarek Poplawski49652912008-04-01 23:56:17 -0700622 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 rose_disconnect(sk, 0, -1, -1);
Jarek Poplawski49652912008-04-01 23:56:17 -0700624 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 rose_destroy_socket(sk);
626 break;
627
628 case ROSE_STATE_1:
629 case ROSE_STATE_3:
630 case ROSE_STATE_4:
631 case ROSE_STATE_5:
632 rose_clear_queues(sk);
633 rose_stop_idletimer(sk);
634 rose_write_internal(sk, ROSE_CLEAR_REQUEST);
635 rose_start_t3timer(sk);
636 rose->state = ROSE_STATE_2;
637 sk->sk_state = TCP_CLOSE;
638 sk->sk_shutdown |= SEND_SHUTDOWN;
639 sk->sk_state_change(sk);
640 sock_set_flag(sk, SOCK_DEAD);
641 sock_set_flag(sk, SOCK_DESTROY);
642 break;
643
644 default:
645 break;
646 }
647
648 sock->sk = NULL;
Jarek Poplawski49652912008-04-01 23:56:17 -0700649 release_sock(sk);
650 sock_put(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
652 return 0;
653}
654
655static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
656{
657 struct sock *sk = sock->sk;
658 struct rose_sock *rose = rose_sk(sk);
659 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
660 struct net_device *dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700661 ax25_address *source;
662 ax25_uid_assoc *user;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 int n;
664
665 if (!sock_flag(sk, SOCK_ZAPPED))
666 return -EINVAL;
667
668 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
669 return -EINVAL;
670
671 if (addr->srose_family != AF_ROSE)
672 return -EINVAL;
673
674 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
675 return -EINVAL;
676
David S. Miller9828e6e2010-09-20 15:40:35 -0700677 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 return -EINVAL;
679
Ralf Baechle8849b722011-04-14 00:20:07 -0700680 if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 return -EADDRNOTAVAIL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682
683 source = &addr->srose_call;
684
David Howellsc2a2b8d2008-11-14 10:39:08 +1100685 user = ax25_findbyuid(current_euid());
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700686 if (user) {
687 rose->source_call = user->call;
688 ax25_uid_put(user);
689 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
691 return -EACCES;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700692 rose->source_call = *source;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 }
694
695 rose->source_addr = addr->srose_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 rose->device = dev;
697 rose->source_ndigis = addr->srose_ndigis;
698
699 if (addr_len == sizeof(struct full_sockaddr_rose)) {
700 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
701 for (n = 0 ; n < addr->srose_ndigis ; n++)
702 rose->source_digis[n] = full_addr->srose_digis[n];
703 } else {
704 if (rose->source_ndigis == 1) {
705 rose->source_digis[0] = addr->srose_digi;
706 }
707 }
708
709 rose_insert_socket(sk);
710
711 sock_reset_flag(sk, SOCK_ZAPPED);
Ralf Baechle8849b722011-04-14 00:20:07 -0700712
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 return 0;
714}
715
716static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
717{
718 struct sock *sk = sock->sk;
719 struct rose_sock *rose = rose_sk(sk);
720 struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
721 unsigned char cause, diagnostic;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 struct net_device *dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700723 ax25_uid_assoc *user;
Ralf Baechle2536b942007-03-12 15:53:33 -0700724 int n, err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
726 if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
727 return -EINVAL;
728
729 if (addr->srose_family != AF_ROSE)
730 return -EINVAL;
731
732 if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
733 return -EINVAL;
734
David S. Miller9828e6e2010-09-20 15:40:35 -0700735 if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 return -EINVAL;
737
738 /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
739 if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
740 return -EINVAL;
741
Ralf Baechle2536b942007-03-12 15:53:33 -0700742 lock_sock(sk);
743
744 if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
745 /* Connect completed during a ERESTARTSYS event */
746 sock->state = SS_CONNECTED;
747 goto out_release;
748 }
749
750 if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
751 sock->state = SS_UNCONNECTED;
752 err = -ECONNREFUSED;
753 goto out_release;
754 }
755
756 if (sk->sk_state == TCP_ESTABLISHED) {
757 /* No reconnect on a seqpacket socket */
758 err = -EISCONN;
759 goto out_release;
760 }
761
762 sk->sk_state = TCP_CLOSE;
763 sock->state = SS_UNCONNECTED;
764
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
Bernard Pidouxfe2c8022008-06-17 17:08:32 -0700766 &diagnostic, 0);
Bernard Pidoux43837b12008-04-19 18:41:51 -0700767 if (!rose->neighbour) {
768 err = -ENETUNREACH;
769 goto out_release;
770 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
772 rose->lci = rose_new_lci(rose->neighbour);
Ralf Baechle2536b942007-03-12 15:53:33 -0700773 if (!rose->lci) {
774 err = -ENETUNREACH;
775 goto out_release;
776 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777
778 if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
779 sock_reset_flag(sk, SOCK_ZAPPED);
780
Ralf Baechle2536b942007-03-12 15:53:33 -0700781 if ((dev = rose_dev_first()) == NULL) {
782 err = -ENETUNREACH;
783 goto out_release;
784 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785
David Howellsc2a2b8d2008-11-14 10:39:08 +1100786 user = ax25_findbyuid(current_euid());
Ralf Baechle2536b942007-03-12 15:53:33 -0700787 if (!user) {
788 err = -EINVAL;
789 goto out_release;
790 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791
792 memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700793 rose->source_call = user->call;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 rose->device = dev;
Ralf Baechle01d7dd02005-08-23 10:11:45 -0700795 ax25_uid_put(user);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796
797 rose_insert_socket(sk); /* Finish the bind */
798 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 rose->dest_addr = addr->srose_addr;
800 rose->dest_call = addr->srose_call;
801 rose->rand = ((long)rose & 0xFFFF) + rose->lci;
802 rose->dest_ndigis = addr->srose_ndigis;
803
804 if (addr_len == sizeof(struct full_sockaddr_rose)) {
805 struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
806 for (n = 0 ; n < addr->srose_ndigis ; n++)
807 rose->dest_digis[n] = full_addr->srose_digis[n];
808 } else {
809 if (rose->dest_ndigis == 1) {
810 rose->dest_digis[0] = addr->srose_digi;
811 }
812 }
813
814 /* Move to connecting socket, start sending Connect Requests */
815 sock->state = SS_CONNECTING;
816 sk->sk_state = TCP_SYN_SENT;
817
818 rose->state = ROSE_STATE_1;
819
820 rose->neighbour->use++;
821
822 rose_write_internal(sk, ROSE_CALL_REQUEST);
823 rose_start_heartbeat(sk);
824 rose_start_t1timer(sk);
825
826 /* Now the loop */
Ralf Baechle2536b942007-03-12 15:53:33 -0700827 if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
828 err = -EINPROGRESS;
829 goto out_release;
830 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831
832 /*
833 * A Connect Ack with Choke or timeout or failed routing will go to
834 * closed.
835 */
836 if (sk->sk_state == TCP_SYN_SENT) {
Ralf Baechle75606dc2007-04-20 16:06:45 -0700837 DEFINE_WAIT(wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 for (;;) {
Eric Dumazetaa395142010-04-20 13:03:51 +0000840 prepare_to_wait(sk_sleep(sk), &wait,
YOSHIFUJI Hideaki6140efb2007-07-19 10:44:40 +0900841 TASK_INTERRUPTIBLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842 if (sk->sk_state != TCP_SYN_SENT)
843 break;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700844 if (!signal_pending(current)) {
845 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 schedule();
Ralf Baechle2536b942007-03-12 15:53:33 -0700847 lock_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 continue;
849 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700850 err = -ERESTARTSYS;
851 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 }
Eric Dumazetaa395142010-04-20 13:03:51 +0000853 finish_wait(sk_sleep(sk), &wait);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700854
855 if (err)
856 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 }
858
859 if (sk->sk_state != TCP_ESTABLISHED) {
860 sock->state = SS_UNCONNECTED;
Ralf Baechle2536b942007-03-12 15:53:33 -0700861 err = sock_error(sk); /* Always set at this point */
862 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 }
864
865 sock->state = SS_CONNECTED;
866
Ralf Baechle2536b942007-03-12 15:53:33 -0700867out_release:
868 release_sock(sk);
869
870 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871}
872
873static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
874{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 struct sk_buff *skb;
876 struct sock *newsk;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700877 DEFINE_WAIT(wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878 struct sock *sk;
879 int err = 0;
880
881 if ((sk = sock->sk) == NULL)
882 return -EINVAL;
883
884 lock_sock(sk);
885 if (sk->sk_type != SOCK_SEQPACKET) {
886 err = -EOPNOTSUPP;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700887 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 }
889
890 if (sk->sk_state != TCP_LISTEN) {
891 err = -EINVAL;
Ralf Baechle75606dc2007-04-20 16:06:45 -0700892 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 }
894
895 /*
896 * The write queue this time is holding sockets ready to use
897 * hooked into the SABM we saved
898 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 for (;;) {
Eric Dumazetaa395142010-04-20 13:03:51 +0000900 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 skb = skb_dequeue(&sk->sk_receive_queue);
903 if (skb)
904 break;
905
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 if (flags & O_NONBLOCK) {
Ralf Baechle75606dc2007-04-20 16:06:45 -0700907 err = -EWOULDBLOCK;
908 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700910 if (!signal_pending(current)) {
911 release_sock(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 schedule();
913 lock_sock(sk);
914 continue;
915 }
Ralf Baechle75606dc2007-04-20 16:06:45 -0700916 err = -ERESTARTSYS;
917 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 }
Eric Dumazetaa395142010-04-20 13:03:51 +0000919 finish_wait(sk_sleep(sk), &wait);
Ralf Baechle75606dc2007-04-20 16:06:45 -0700920 if (err)
921 goto out_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
923 newsk = skb->sk;
David S. Miller44ccff12008-06-17 02:39:21 -0700924 sock_graft(newsk, newsock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926 /* Now attach up the new socket */
927 skb->sk = NULL;
928 kfree_skb(skb);
929 sk->sk_ack_backlog--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
Ralf Baechle75606dc2007-04-20 16:06:45 -0700931out_release:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 release_sock(sk);
933
934 return err;
935}
936
937static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
938 int *uaddr_len, int peer)
939{
940 struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
941 struct sock *sk = sock->sk;
942 struct rose_sock *rose = rose_sk(sk);
943 int n;
944
Eric Dumazet17ac2e92009-08-06 03:34:06 +0000945 memset(srose, 0, sizeof(*srose));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 if (peer != 0) {
947 if (sk->sk_state != TCP_ESTABLISHED)
948 return -ENOTCONN;
949 srose->srose_family = AF_ROSE;
950 srose->srose_addr = rose->dest_addr;
951 srose->srose_call = rose->dest_call;
952 srose->srose_ndigis = rose->dest_ndigis;
953 for (n = 0; n < rose->dest_ndigis; n++)
954 srose->srose_digis[n] = rose->dest_digis[n];
955 } else {
956 srose->srose_family = AF_ROSE;
957 srose->srose_addr = rose->source_addr;
958 srose->srose_call = rose->source_call;
959 srose->srose_ndigis = rose->source_ndigis;
960 for (n = 0; n < rose->source_ndigis; n++)
961 srose->srose_digis[n] = rose->source_digis[n];
962 }
963
964 *uaddr_len = sizeof(struct full_sockaddr_rose);
965 return 0;
966}
967
968int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
969{
970 struct sock *sk;
971 struct sock *make;
972 struct rose_sock *make_rose;
973 struct rose_facilities_struct facilities;
Ben Hutchingse0bccd32011-03-20 06:48:05 +0000974 int n;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975
976 skb->sk = NULL; /* Initially we don't know who it's for */
977
978 /*
979 * skb->data points to the rose frame start
980 */
981 memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
982
Ben Hutchingse0bccd32011-03-20 06:48:05 +0000983 if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
984 skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
985 &facilities)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
987 return 0;
988 }
989
990 sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
991
992 /*
993 * We can't accept the Call Request.
994 */
995 if (sk == NULL || sk_acceptq_is_full(sk) ||
996 (make = rose_make_new(sk)) == NULL) {
997 rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
998 return 0;
999 }
1000
1001 skb->sk = make;
1002 make->sk_state = TCP_ESTABLISHED;
1003 make_rose = rose_sk(make);
1004
1005 make_rose->lci = lci;
1006 make_rose->dest_addr = facilities.dest_addr;
1007 make_rose->dest_call = facilities.dest_call;
1008 make_rose->dest_ndigis = facilities.dest_ndigis;
1009 for (n = 0 ; n < facilities.dest_ndigis ; n++)
1010 make_rose->dest_digis[n] = facilities.dest_digis[n];
1011 make_rose->source_addr = facilities.source_addr;
1012 make_rose->source_call = facilities.source_call;
1013 make_rose->source_ndigis = facilities.source_ndigis;
1014 for (n = 0 ; n < facilities.source_ndigis ; n++)
1015 make_rose->source_digis[n]= facilities.source_digis[n];
1016 make_rose->neighbour = neigh;
1017 make_rose->device = dev;
1018 make_rose->facilities = facilities;
1019
1020 make_rose->neighbour->use++;
1021
1022 if (rose_sk(sk)->defer) {
1023 make_rose->state = ROSE_STATE_5;
1024 } else {
1025 rose_write_internal(make, ROSE_CALL_ACCEPTED);
1026 make_rose->state = ROSE_STATE_3;
1027 rose_start_idletimer(make);
1028 }
1029
1030 make_rose->condition = 0x00;
1031 make_rose->vs = 0;
1032 make_rose->va = 0;
1033 make_rose->vr = 0;
1034 make_rose->vl = 0;
1035 sk->sk_ack_backlog++;
1036
1037 rose_insert_socket(make);
1038
1039 skb_queue_head(&sk->sk_receive_queue, skb);
1040
1041 rose_start_heartbeat(make);
1042
1043 if (!sock_flag(sk, SOCK_DEAD))
1044 sk->sk_data_ready(sk, skb->len);
1045
1046 return 1;
1047}
1048
1049static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
1050 struct msghdr *msg, size_t len)
1051{
1052 struct sock *sk = sock->sk;
1053 struct rose_sock *rose = rose_sk(sk);
1054 struct sockaddr_rose *usrose = (struct sockaddr_rose *)msg->msg_name;
1055 int err;
1056 struct full_sockaddr_rose srose;
1057 struct sk_buff *skb;
1058 unsigned char *asmptr;
1059 int n, size, qbit = 0;
1060
1061 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
1062 return -EINVAL;
1063
1064 if (sock_flag(sk, SOCK_ZAPPED))
1065 return -EADDRNOTAVAIL;
1066
1067 if (sk->sk_shutdown & SEND_SHUTDOWN) {
1068 send_sig(SIGPIPE, current, 0);
1069 return -EPIPE;
1070 }
1071
1072 if (rose->neighbour == NULL || rose->device == NULL)
1073 return -ENETUNREACH;
1074
1075 if (usrose != NULL) {
1076 if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
1077 return -EINVAL;
1078 memset(&srose, 0, sizeof(struct full_sockaddr_rose));
1079 memcpy(&srose, usrose, msg->msg_namelen);
1080 if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
1081 ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
1082 return -EISCONN;
1083 if (srose.srose_ndigis != rose->dest_ndigis)
1084 return -EISCONN;
1085 if (srose.srose_ndigis == rose->dest_ndigis) {
1086 for (n = 0 ; n < srose.srose_ndigis ; n++)
1087 if (ax25cmp(&rose->dest_digis[n],
1088 &srose.srose_digis[n]))
1089 return -EISCONN;
1090 }
1091 if (srose.srose_family != AF_ROSE)
1092 return -EINVAL;
1093 } else {
1094 if (sk->sk_state != TCP_ESTABLISHED)
1095 return -ENOTCONN;
1096
1097 srose.srose_family = AF_ROSE;
1098 srose.srose_addr = rose->dest_addr;
1099 srose.srose_call = rose->dest_call;
1100 srose.srose_ndigis = rose->dest_ndigis;
1101 for (n = 0 ; n < rose->dest_ndigis ; n++)
1102 srose.srose_digis[n] = rose->dest_digis[n];
1103 }
1104
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 /* Build a packet */
Alan Cox83e0bbc2009-03-27 00:28:21 -07001106 /* Sanity check the packet size */
1107 if (len > 65535)
1108 return -EMSGSIZE;
1109
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
1111
1112 if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
1113 return err;
1114
1115 skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
1116
1117 /*
1118 * Put the data on the end
1119 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120
Arnaldo Carvalho de Meloeeeb0372007-03-14 21:04:34 -03001121 skb_reset_transport_header(skb);
1122 skb_put(skb, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
Arnaldo Carvalho de Meloeeeb0372007-03-14 21:04:34 -03001124 err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125 if (err) {
1126 kfree_skb(skb);
1127 return err;
1128 }
1129
1130 /*
1131 * If the Q BIT Include socket option is in force, the first
1132 * byte of the user data is the logical value of the Q Bit.
1133 */
1134 if (rose->qbitincl) {
1135 qbit = skb->data[0];
1136 skb_pull(skb, 1);
1137 }
1138
1139 /*
1140 * Push down the ROSE header
1141 */
1142 asmptr = skb_push(skb, ROSE_MIN_LEN);
1143
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 /* Build a ROSE Network header */
1145 asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
1146 asmptr[1] = (rose->lci >> 0) & 0xFF;
1147 asmptr[2] = ROSE_DATA;
1148
1149 if (qbit)
1150 asmptr[0] |= ROSE_Q_BIT;
1151
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 if (sk->sk_state != TCP_ESTABLISHED) {
1153 kfree_skb(skb);
1154 return -ENOTCONN;
1155 }
1156
1157#ifdef M_BIT
1158#define ROSE_PACLEN (256-ROSE_MIN_LEN)
1159 if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
1160 unsigned char header[ROSE_MIN_LEN];
1161 struct sk_buff *skbn;
1162 int frontlen;
1163 int lg;
1164
1165 /* Save a copy of the Header */
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -03001166 skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167 skb_pull(skb, ROSE_MIN_LEN);
1168
1169 frontlen = skb_headroom(skb);
1170
1171 while (skb->len > 0) {
1172 if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
1173 kfree_skb(skb);
1174 return err;
1175 }
1176
1177 skbn->sk = sk;
1178 skbn->free = 1;
1179 skbn->arp = 1;
1180
1181 skb_reserve(skbn, frontlen);
1182
1183 lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
1184
1185 /* Copy the user data */
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -03001186 skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 skb_pull(skb, lg);
1188
1189 /* Duplicate the Header */
1190 skb_push(skbn, ROSE_MIN_LEN);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001191 skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192
1193 if (skb->len > 0)
1194 skbn->data[2] |= M_BIT;
1195
1196 skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
1197 }
1198
1199 skb->free = 1;
1200 kfree_skb(skb);
1201 } else {
1202 skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
1203 }
1204#else
1205 skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
1206#endif
1207
1208 rose_kick(sk);
1209
1210 return len;
1211}
1212
1213
1214static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
1215 struct msghdr *msg, size_t size, int flags)
1216{
1217 struct sock *sk = sock->sk;
1218 struct rose_sock *rose = rose_sk(sk);
1219 struct sockaddr_rose *srose = (struct sockaddr_rose *)msg->msg_name;
1220 size_t copied;
1221 unsigned char *asmptr;
1222 struct sk_buff *skb;
1223 int n, er, qbit;
1224
1225 /*
1226 * This works for seqpacket too. The receiver has ordered the queue for
1227 * us! We do one quick check first though
1228 */
1229 if (sk->sk_state != TCP_ESTABLISHED)
1230 return -ENOTCONN;
1231
1232 /* Now we can treat all alike */
1233 if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
1234 return er;
1235
1236 qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
1237
1238 skb_pull(skb, ROSE_MIN_LEN);
1239
1240 if (rose->qbitincl) {
1241 asmptr = skb_push(skb, 1);
1242 *asmptr = qbit;
1243 }
1244
Arnaldo Carvalho de Melobadff6d2007-03-13 13:06:52 -03001245 skb_reset_transport_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 copied = skb->len;
1247
1248 if (copied > size) {
1249 copied = size;
1250 msg->msg_flags |= MSG_TRUNC;
1251 }
1252
1253 skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
1254
1255 if (srose != NULL) {
Mathias Krause4a184232013-04-07 01:51:59 +00001256 memset(srose, 0, msg->msg_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 srose->srose_family = AF_ROSE;
1258 srose->srose_addr = rose->dest_addr;
1259 srose->srose_call = rose->dest_call;
1260 srose->srose_ndigis = rose->dest_ndigis;
1261 if (msg->msg_namelen >= sizeof(struct full_sockaddr_rose)) {
1262 struct full_sockaddr_rose *full_srose = (struct full_sockaddr_rose *)msg->msg_name;
1263 for (n = 0 ; n < rose->dest_ndigis ; n++)
1264 full_srose->srose_digis[n] = rose->dest_digis[n];
1265 msg->msg_namelen = sizeof(struct full_sockaddr_rose);
1266 } else {
1267 if (rose->dest_ndigis >= 1) {
1268 srose->srose_ndigis = 1;
1269 srose->srose_digi = rose->dest_digis[0];
1270 }
1271 msg->msg_namelen = sizeof(struct sockaddr_rose);
1272 }
1273 }
1274
1275 skb_free_datagram(sk, skb);
1276
1277 return copied;
1278}
1279
1280
1281static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1282{
1283 struct sock *sk = sock->sk;
1284 struct rose_sock *rose = rose_sk(sk);
1285 void __user *argp = (void __user *)arg;
1286
1287 switch (cmd) {
1288 case TIOCOUTQ: {
1289 long amount;
Eric Dumazet31e6d362009-06-17 19:05:41 -07001290
1291 amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 if (amount < 0)
1293 amount = 0;
Ralf Baechle20b7d102005-09-12 14:24:55 -07001294 return put_user(amount, (unsigned int __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 }
1296
1297 case TIOCINQ: {
1298 struct sk_buff *skb;
1299 long amount = 0L;
1300 /* These two are safe on a single CPU system as only user tasks fiddle here */
1301 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
1302 amount = skb->len;
Ralf Baechle20b7d102005-09-12 14:24:55 -07001303 return put_user(amount, (unsigned int __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304 }
1305
1306 case SIOCGSTAMP:
Ralf Baechle20b7d102005-09-12 14:24:55 -07001307 return sock_get_timestamp(sk, (struct timeval __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308
Eric Dumazetae40eb12007-03-18 17:33:16 -07001309 case SIOCGSTAMPNS:
1310 return sock_get_timestampns(sk, (struct timespec __user *) argp);
1311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312 case SIOCGIFADDR:
1313 case SIOCSIFADDR:
1314 case SIOCGIFDSTADDR:
1315 case SIOCSIFDSTADDR:
1316 case SIOCGIFBRDADDR:
1317 case SIOCSIFBRDADDR:
1318 case SIOCGIFNETMASK:
1319 case SIOCSIFNETMASK:
1320 case SIOCGIFMETRIC:
1321 case SIOCSIFMETRIC:
1322 return -EINVAL;
1323
1324 case SIOCADDRT:
1325 case SIOCDELRT:
1326 case SIOCRSCLRRT:
1327 if (!capable(CAP_NET_ADMIN))
1328 return -EPERM;
1329 return rose_rt_ioctl(cmd, argp);
1330
1331 case SIOCRSGCAUSE: {
1332 struct rose_cause_struct rose_cause;
1333 rose_cause.cause = rose->cause;
1334 rose_cause.diagnostic = rose->diagnostic;
1335 return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
1336 }
1337
1338 case SIOCRSSCAUSE: {
1339 struct rose_cause_struct rose_cause;
1340 if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
1341 return -EFAULT;
1342 rose->cause = rose_cause.cause;
1343 rose->diagnostic = rose_cause.diagnostic;
1344 return 0;
1345 }
1346
1347 case SIOCRSSL2CALL:
1348 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1349 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1350 ax25_listen_release(&rose_callsign, NULL);
1351 if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
1352 return -EFAULT;
1353 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
Ralf Baechle81dcd162006-12-14 15:50:34 -08001354 return ax25_listen_register(&rose_callsign, NULL);
1355
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 return 0;
1357
1358 case SIOCRSGL2CALL:
1359 return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
1360
1361 case SIOCRSACCEPT:
1362 if (rose->state == ROSE_STATE_5) {
1363 rose_write_internal(sk, ROSE_CALL_ACCEPTED);
1364 rose_start_idletimer(sk);
1365 rose->condition = 0x00;
1366 rose->vs = 0;
1367 rose->va = 0;
1368 rose->vr = 0;
1369 rose->vl = 0;
1370 rose->state = ROSE_STATE_3;
1371 }
1372 return 0;
1373
1374 default:
Christoph Hellwigb5e5fa52006-01-03 14:18:33 -08001375 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 }
1377
1378 return 0;
1379}
1380
1381#ifdef CONFIG_PROC_FS
1382static void *rose_info_start(struct seq_file *seq, loff_t *pos)
Eric Dumazet95b7d922008-01-15 03:30:35 -08001383 __acquires(rose_list_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 spin_lock_bh(&rose_list_lock);
Li Zefanb9997482010-02-08 23:19:17 +00001386 return seq_hlist_start_head(&rose_list, *pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387}
1388
1389static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
1390{
Li Zefanb9997482010-02-08 23:19:17 +00001391 return seq_hlist_next(v, &rose_list, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392}
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001393
Linus Torvalds1da177e2005-04-16 15:20:36 -07001394static void rose_info_stop(struct seq_file *seq, void *v)
Eric Dumazet95b7d922008-01-15 03:30:35 -08001395 __releases(rose_list_lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396{
1397 spin_unlock_bh(&rose_list_lock);
1398}
1399
1400static int rose_info_show(struct seq_file *seq, void *v)
1401{
Ralf Baechledcf777f2009-07-26 19:11:14 -07001402 char buf[11], rsbuf[11];
Ralf Baechlef75268c2005-09-06 15:49:39 -07001403
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404 if (v == SEQ_START_TOKEN)
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001405 seq_puts(seq,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 "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");
1407
1408 else {
Li Zefanb9997482010-02-08 23:19:17 +00001409 struct sock *s = sk_entry(v);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410 struct rose_sock *rose = rose_sk(s);
1411 const char *devname, *callsign;
1412 const struct net_device *dev = rose->device;
1413
1414 if (!dev)
1415 devname = "???";
1416 else
1417 devname = dev->name;
YOSHIFUJI Hideaki3dcf7c52007-02-09 23:25:12 +09001418
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419 seq_printf(seq, "%-10s %-9s ",
Ralf Baechledcf777f2009-07-26 19:11:14 -07001420 rose2asc(rsbuf, &rose->dest_addr),
1421 ax2asc(buf, &rose->dest_call));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422
1423 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
1424 callsign = "??????-?";
1425 else
Ralf Baechlef75268c2005-09-06 15:49:39 -07001426 callsign = ax2asc(buf, &rose->source_call);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427
1428 seq_printf(seq,
1429 "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
Ralf Baechledcf777f2009-07-26 19:11:14 -07001430 rose2asc(rsbuf, &rose->source_addr),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 callsign,
1432 devname,
1433 rose->lci & 0x0FFF,
1434 (rose->neighbour) ? rose->neighbour->number : 0,
1435 rose->state,
1436 rose->vs,
1437 rose->vr,
1438 rose->va,
1439 ax25_display_timer(&rose->timer) / HZ,
1440 rose->t1 / HZ,
1441 rose->t2 / HZ,
1442 rose->t3 / HZ,
1443 rose->hb / HZ,
1444 ax25_display_timer(&rose->idletimer) / (60 * HZ),
1445 rose->idle / (60 * HZ),
Eric Dumazet31e6d362009-06-17 19:05:41 -07001446 sk_wmem_alloc_get(s),
1447 sk_rmem_alloc_get(s),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
1449 }
1450
1451 return 0;
1452}
1453
Philippe De Muyter56b3d972007-07-10 23:07:31 -07001454static const struct seq_operations rose_info_seqops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 .start = rose_info_start,
1456 .next = rose_info_next,
1457 .stop = rose_info_stop,
1458 .show = rose_info_show,
1459};
1460
1461static int rose_info_open(struct inode *inode, struct file *file)
1462{
1463 return seq_open(file, &rose_info_seqops);
1464}
1465
Arjan van de Venda7071d2007-02-12 00:55:36 -08001466static const struct file_operations rose_info_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467 .owner = THIS_MODULE,
1468 .open = rose_info_open,
1469 .read = seq_read,
1470 .llseek = seq_lseek,
1471 .release = seq_release,
1472};
1473#endif /* CONFIG_PROC_FS */
1474
Stephen Hemmingerec1b4cf2009-10-05 05:58:39 +00001475static const struct net_proto_family rose_family_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476 .family = PF_ROSE,
1477 .create = rose_create,
1478 .owner = THIS_MODULE,
1479};
1480
Alexey Dobriyan5708e862009-09-14 12:23:23 +00001481static const struct proto_ops rose_proto_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482 .family = PF_ROSE,
1483 .owner = THIS_MODULE,
1484 .release = rose_release,
1485 .bind = rose_bind,
1486 .connect = rose_connect,
1487 .socketpair = sock_no_socketpair,
1488 .accept = rose_accept,
1489 .getname = rose_getname,
1490 .poll = datagram_poll,
1491 .ioctl = rose_ioctl,
1492 .listen = rose_listen,
1493 .shutdown = sock_no_shutdown,
1494 .setsockopt = rose_setsockopt,
1495 .getsockopt = rose_getsockopt,
1496 .sendmsg = rose_sendmsg,
1497 .recvmsg = rose_recvmsg,
1498 .mmap = sock_no_mmap,
1499 .sendpage = sock_no_sendpage,
1500};
1501
1502static struct notifier_block rose_dev_notifier = {
1503 .notifier_call = rose_device_event,
1504};
1505
1506static struct net_device **dev_rose;
1507
Ralf Baechle8d5cf592006-12-14 15:50:01 -08001508static struct ax25_protocol rose_pid = {
1509 .pid = AX25_P_ROSE,
1510 .func = rose_route_frame
1511};
1512
Ralf Baechlea4282712006-12-14 15:51:23 -08001513static struct ax25_linkfail rose_linkfail_notifier = {
1514 .func = rose_link_failed
1515};
1516
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517static int __init rose_proto_init(void)
1518{
1519 int i;
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001520 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001522 if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
1523 printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
1524 rc = -EINVAL;
1525 goto out;
1526 }
1527
1528 rc = proto_register(&rose_proto, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 if (rc != 0)
1530 goto out;
1531
1532 rose_callsign = null_ax25_address;
1533
Ralf Baechle1b30dd32006-07-09 12:14:22 -07001534 dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535 if (dev_rose == NULL) {
1536 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001537 rc = -ENOMEM;
1538 goto out_proto_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 }
1540
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541 for (i = 0; i < rose_ndevs; i++) {
1542 struct net_device *dev;
1543 char name[IFNAMSIZ];
1544
1545 sprintf(name, "rose%d", i);
Stephen Hemmingerd289d122009-01-09 13:01:05 +00001546 dev = alloc_netdev(0, name, rose_setup);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001547 if (!dev) {
1548 printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001549 rc = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001550 goto fail;
1551 }
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001552 rc = register_netdev(dev);
1553 if (rc) {
Alexey Dobriyan520d1b82005-09-27 15:45:15 -07001554 printk(KERN_ERR "ROSE: netdevice registration failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555 free_netdev(dev);
1556 goto fail;
1557 }
David S. Millerc773e842008-07-08 23:13:53 -07001558 rose_set_lockdep_key(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559 dev_rose[i] = dev;
1560 }
1561
1562 sock_register(&rose_family_ops);
1563 register_netdevice_notifier(&rose_dev_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564
Ralf Baechle8d5cf592006-12-14 15:50:01 -08001565 ax25_register_pid(&rose_pid);
Ralf Baechlea4282712006-12-14 15:51:23 -08001566 ax25_linkfail_register(&rose_linkfail_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567
1568#ifdef CONFIG_SYSCTL
1569 rose_register_sysctl();
1570#endif
1571 rose_loopback_init();
1572
1573 rose_add_loopback_neigh();
1574
Gao fengd4beaa62013-02-18 01:34:54 +00001575 proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops);
1576 proc_create("rose_neigh", S_IRUGO, init_net.proc_net,
1577 &rose_neigh_fops);
1578 proc_create("rose_nodes", S_IRUGO, init_net.proc_net,
1579 &rose_nodes_fops);
1580 proc_create("rose_routes", S_IRUGO, init_net.proc_net,
1581 &rose_routes_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582out:
1583 return rc;
1584fail:
1585 while (--i >= 0) {
1586 unregister_netdev(dev_rose[i]);
1587 free_netdev(dev_rose[i]);
1588 }
1589 kfree(dev_rose);
Alexey Dobriyana83cd2c2005-09-27 15:44:36 -07001590out_proto_unregister:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591 proto_unregister(&rose_proto);
Alexey Dobriyan70ff3b62005-09-27 15:43:46 -07001592 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593}
1594module_init(rose_proto_init);
1595
1596module_param(rose_ndevs, int, 0);
1597MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
1598
1599MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
1600MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
1601MODULE_LICENSE("GPL");
1602MODULE_ALIAS_NETPROTO(PF_ROSE);
1603
1604static void __exit rose_exit(void)
1605{
1606 int i;
1607
Gao fengece31ff2013-02-18 01:34:56 +00001608 remove_proc_entry("rose", init_net.proc_net);
1609 remove_proc_entry("rose_neigh", init_net.proc_net);
1610 remove_proc_entry("rose_nodes", init_net.proc_net);
1611 remove_proc_entry("rose_routes", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612 rose_loopback_clear();
1613
1614 rose_rt_free();
1615
1616 ax25_protocol_release(AX25_P_ROSE);
Ralf Baechlea4282712006-12-14 15:51:23 -08001617 ax25_linkfail_release(&rose_linkfail_notifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618
1619 if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
1620 ax25_listen_release(&rose_callsign, NULL);
1621
1622#ifdef CONFIG_SYSCTL
1623 rose_unregister_sysctl();
1624#endif
1625 unregister_netdevice_notifier(&rose_dev_notifier);
1626
1627 sock_unregister(PF_ROSE);
1628
1629 for (i = 0; i < rose_ndevs; i++) {
1630 struct net_device *dev = dev_rose[i];
1631
1632 if (dev) {
1633 unregister_netdev(dev);
1634 free_netdev(dev);
1635 }
1636 }
1637
1638 kfree(dev_rose);
1639 proto_unregister(&rose_proto);
1640}
1641
1642module_exit(rose_exit);